projects / binutils.git / blame
| Commit | Line | Data |
|---|---|---|
| 5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
| 4b95cf5c | 2 | Copyright (C) 1999-2014 Free Software Foundation, Inc. |
| 5bd4f169 AM |
3 | Written by Linus Nordberg, Swox AB <[email protected]>, |
| 4 | based on elf32-ppc.c by Ian Lance Taylor. | |
| 32ca9640 | 5 | Largely rewritten by Alan Modra. |
| 5bd4f169 | 6 | |
| ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
| 5bd4f169 | 8 | |
| ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by | |
| cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
| ae9a127f | 12 | (at your option) any later version. |
| 5bd4f169 | 13 | |
| ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 | GNU General Public License for more details. | |
| 5bd4f169 | 18 | |
| 4ce794b7 AM |
19 | You should have received a copy of the GNU General Public License along |
| 20 | with this program; if not, write to the Free Software Foundation, Inc., | |
| 3e110533 | 21 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| 5bd4f169 | 22 | |
| cd123cb7 | 23 | |
| 4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
| 25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
| 26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
| 5bd4f169 | 27 | |
| 3db64b00 | 28 | #include "sysdep.h" |
| 183e98be | 29 | #include <stdarg.h> |
| 5bd4f169 | 30 | #include "bfd.h" |
| 5bd4f169 AM |
31 | #include "bfdlink.h" |
| 32 | #include "libbfd.h" | |
| 33 | #include "elf-bfd.h" | |
| 04c9666a | 34 | #include "elf/ppc64.h" |
| 5d1634d7 | 35 | #include "elf64-ppc.h" |
| 58d180e8 | 36 | #include "dwarf2.h" |
| 5bd4f169 | 37 | |
| 805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
| 4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 2441e016 AM |
40 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
| 41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
| 805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
| 4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
| 4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
| 4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
| 4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
| 4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
| 4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
| 4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 2441e016 | 56 | static bfd_vma opd_entry_value |
| aef36ac1 | 57 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
| 5bd4f169 | 58 | |
| 6d00b590 | 59 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
| ad8e1ba5 | 60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
| 6d00b590 | 61 | #define TARGET_BIG_SYM powerpc_elf64_vec |
| ad8e1ba5 AM |
62 | #define TARGET_BIG_NAME "elf64-powerpc" |
| 63 | #define ELF_ARCH bfd_arch_powerpc | |
| ae95ffa6 | 64 | #define ELF_TARGET_ID PPC64_ELF_DATA |
| ad8e1ba5 AM |
65 | #define ELF_MACHINE_CODE EM_PPC64 |
| 66 | #define ELF_MAXPAGESIZE 0x10000 | |
| 24718e3b | 67 | #define ELF_COMMONPAGESIZE 0x1000 |
| ad8e1ba5 AM |
68 | #define elf_info_to_howto ppc64_elf_info_to_howto |
| 69 | ||
| 70 | #define elf_backend_want_got_sym 0 | |
| 71 | #define elf_backend_want_plt_sym 0 | |
| 72 | #define elf_backend_plt_alignment 3 | |
| 73 | #define elf_backend_plt_not_loaded 1 | |
| ad8e1ba5 | 74 | #define elf_backend_got_header_size 8 |
| ad8e1ba5 AM |
75 | #define elf_backend_can_gc_sections 1 |
| 76 | #define elf_backend_can_refcount 1 | |
| 77 | #define elf_backend_rela_normal 1 | |
| 6bfdb61b | 78 | #define elf_backend_default_execstack 0 |
| ad8e1ba5 | 79 | |
| e717da7e | 80 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
| ad8e1ba5 | 81 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
| aa374f67 | 82 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
| ee67d69a AM |
83 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
| 84 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
| ad8e1ba5 AM |
85 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
| 86 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
| 90e3cdf2 | 87 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
| aa374f67 | 88 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
| ad8e1ba5 AM |
89 | |
| 90 | #define elf_backend_object_p ppc64_elf_object_p | |
| d37c89e5 AM |
91 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
| 92 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
| 183e98be | 93 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
| ad8e1ba5 AM |
94 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
| 95 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
| 555cd476 | 96 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
| f6c7c3e8 | 97 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
| e5034e59 | 98 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
| 8387904d | 99 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
| ad8e1ba5 | 100 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
| 74f0fb50 | 101 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
| 64d03ab5 | 102 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
| ad8e1ba5 AM |
103 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
| 104 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
| 105 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
| 106 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
| 9f296da3 | 107 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
| ad8e1ba5 AM |
108 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
| 109 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
| a345bc8d | 110 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
| 74541ad4 | 111 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
| 60124e18 | 112 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
| ad8e1ba5 AM |
113 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
| 114 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
| 115 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
| 116 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
| 754021d0 | 117 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
| 29ef7005 | 118 | #define elf_backend_special_sections ppc64_elf_special_sections |
| 6911b7dc | 119 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
| ad8e1ba5 | 120 | |
| 5bd4f169 AM |
121 | /* The name of the dynamic interpreter. This is put in the .interp |
| 122 | section. */ | |
| 123 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
| 124 | ||
| 125 | /* The size in bytes of an entry in the procedure linkage table. */ | |
| b9e5796b | 126 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
| 5bd4f169 AM |
127 | |
| 128 | /* The initial size of the plt reserved for the dynamic linker. */ | |
| b9e5796b | 129 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
| 5bd4f169 | 130 | |
| a078d95a AM |
131 | /* Offsets to some stack save slots. */ |
| 132 | #define STK_LR 16 | |
| 133 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
| eb8d7fda | 134 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
| a078d95a AM |
135 | CR save slot. Used only by optimised __tls_get_addr call stub, |
| 136 | relying on __tls_get_addr_opt not saving CR.. */ | |
| 137 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
| 138 | ||
| 5bd4f169 | 139 | /* TOC base pointers offset from start of TOC. */ |
| 411e1bfb AM |
140 | #define TOC_BASE_OFF 0x8000 |
| 141 | ||
| 142 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
| 143 | #define TP_OFFSET 0x7000 | |
| 144 | #define DTP_OFFSET 0x8000 | |
| 5bd4f169 | 145 | |
| ad8e1ba5 AM |
146 | /* .plt call stub instructions. The normal stub is like this, but |
| 147 | sometimes the .plt entry crosses a 64k boundary and we need to | |
| 71a39c98 | 148 | insert an addi to adjust r11. */ |
| a078d95a | 149 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
| 71a39c98 AM |
150 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
| 151 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
| 152 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
| 153 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
| 154 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
| 5d1634d7 AM |
155 | #define BCTR 0x4e800420 /* bctr */ |
| 156 | ||
| 71a39c98 | 157 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
| ad8e1ba5 AM |
158 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
| 159 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
| 160 | ||
| 71a39c98 AM |
161 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ |
| 162 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
| 163 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
| 794e51c0 AM |
164 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ |
| 165 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
| 166 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
| 167 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
| 168 | ||
| 71a39c98 | 169 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
| ac2df442 AM |
170 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
| 171 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
| 172 | ||
| a078d95a | 173 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
| ad8e1ba5 | 174 | |
| 397998fc | 175 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
| a345bc8d AM |
176 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
| 177 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ | |
| 178 | ||
| ee4bf8d2 | 179 | /* glink call stub instructions. We enter with the index in R0. */ |
| ad8e1ba5 | 180 | #define GLINK_CALL_STUB_SIZE (16*4) |
| ee4bf8d2 AM |
181 | /* 0: */ |
| 182 | /* .quad plt0-1f */ | |
| 183 | /* __glink: */ | |
| 184 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
| 185 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
| 186 | /* 1: */ | |
| 187 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
| 71a39c98 | 188 | /* ld %2,(0b-1b)(%11) */ |
| ee4bf8d2 | 189 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
| 71a39c98 AM |
190 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
| 191 | /* ld %12,0(%11) */ | |
| 192 | /* ld %2,8(%11) */ | |
| 193 | /* mtctr %12 */ | |
| 194 | /* ld %11,16(%11) */ | |
| ee4bf8d2 | 195 | /* bctr */ |
| b9e5796b AM |
196 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
| 197 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
| 198 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
| 199 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
| 200 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
| 5d1634d7 AM |
201 | |
| 202 | /* Pad with this. */ | |
| 203 | #define NOP 0x60000000 | |
| 204 | ||
| 721956f4 AM |
205 | /* Some other nops. */ |
| 206 | #define CROR_151515 0x4def7b82 | |
| 207 | #define CROR_313131 0x4ffffb82 | |
| 208 | ||
| cedb70c5 | 209 | /* .glink entries for the first 32k functions are two instructions. */ |
| 5d1634d7 AM |
210 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
| 211 | #define B_DOT 0x48000000 /* b . */ | |
| 212 | ||
| 213 | /* After that, we need two instructions to load the index, followed by | |
| 214 | a branch. */ | |
| 215 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
| 10ed1bba | 216 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
| 41bd81ab | 217 | |
| deb0e272 AM |
218 | /* Instructions used by the save and restore reg functions. */ |
| 219 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
| 220 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
| 221 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
| 222 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
| 82bd7b59 AM |
223 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
| 224 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
| deb0e272 AM |
225 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
| 226 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
| 227 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
| 228 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
| 82bd7b59 AM |
229 | #define BLR 0x4e800020 /* blr */ |
| 230 | ||
| 41bd81ab AM |
231 | /* Since .opd is an array of descriptors and each entry will end up |
| 232 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
| 233 | propagate .opd relocs; The dynamic linker should be taught to | |
| 1e2f5b6e | 234 | relocate .opd without reloc entries. */ |
| 41bd81ab AM |
235 | #ifndef NO_OPD_RELOCS |
| 236 | #define NO_OPD_RELOCS 0 | |
| 237 | #endif | |
| 5bd4f169 | 238 | \f |
| f5e87a1d | 239 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
| b34976b6 | 240 | |
| 5bd4f169 | 241 | /* Relocation HOWTO's. */ |
| 04c9666a | 242 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
| 5bd4f169 AM |
243 | |
| 244 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
| 245 | /* This reloc does nothing. */ | |
| 246 | HOWTO (R_PPC64_NONE, /* type */ | |
| 247 | 0, /* rightshift */ | |
| 411e1bfb AM |
248 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 249 | 32, /* bitsize */ | |
| b34976b6 | 250 | FALSE, /* pc_relative */ |
| 5bd4f169 | 251 | 0, /* bitpos */ |
| f5e87a1d | 252 | complain_overflow_dont, /* complain_on_overflow */ |
| 5bd4f169 AM |
253 | bfd_elf_generic_reloc, /* special_function */ |
| 254 | "R_PPC64_NONE", /* name */ | |
| b34976b6 | 255 | FALSE, /* partial_inplace */ |
| d006db6c | 256 | 0, /* src_mask */ |
| 5bd4f169 | 257 | 0, /* dst_mask */ |
| b34976b6 | 258 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
259 | |
| 260 | /* A standard 32 bit relocation. */ | |
| 261 | HOWTO (R_PPC64_ADDR32, /* type */ | |
| 262 | 0, /* rightshift */ | |
| 263 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 264 | 32, /* bitsize */ | |
| b34976b6 | 265 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
266 | 0, /* bitpos */ |
| 267 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 268 | bfd_elf_generic_reloc, /* special_function */ | |
| 269 | "R_PPC64_ADDR32", /* name */ | |
| b34976b6 | 270 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
271 | 0, /* src_mask */ |
| 272 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 273 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
274 | |
| 275 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
| 276 | FIXME: we don't check that, we just clear them. */ | |
| 277 | HOWTO (R_PPC64_ADDR24, /* type */ | |
| 278 | 0, /* rightshift */ | |
| 279 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 280 | 26, /* bitsize */ | |
| b34976b6 | 281 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
282 | 0, /* bitpos */ |
| 283 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 284 | bfd_elf_generic_reloc, /* special_function */ | |
| 285 | "R_PPC64_ADDR24", /* name */ | |
| b34976b6 | 286 | FALSE, /* partial_inplace */ |
| d006db6c | 287 | 0, /* src_mask */ |
| f5e87a1d | 288 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 289 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
290 | |
| 291 | /* A standard 16 bit relocation. */ | |
| 292 | HOWTO (R_PPC64_ADDR16, /* type */ | |
| 293 | 0, /* rightshift */ | |
| 294 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 295 | 16, /* bitsize */ | |
| b34976b6 | 296 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
297 | 0, /* bitpos */ |
| 298 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 299 | bfd_elf_generic_reloc, /* special_function */ | |
| 300 | "R_PPC64_ADDR16", /* name */ | |
| b34976b6 | 301 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
302 | 0, /* src_mask */ |
| 303 | 0xffff, /* dst_mask */ | |
| b34976b6 | 304 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
305 | |
| 306 | /* A 16 bit relocation without overflow. */ | |
| 307 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
| 308 | 0, /* rightshift */ | |
| 309 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 310 | 16, /* bitsize */ | |
| b34976b6 | 311 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
312 | 0, /* bitpos */ |
| 313 | complain_overflow_dont,/* complain_on_overflow */ | |
| 314 | bfd_elf_generic_reloc, /* special_function */ | |
| 315 | "R_PPC64_ADDR16_LO", /* name */ | |
| b34976b6 | 316 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
317 | 0, /* src_mask */ |
| 318 | 0xffff, /* dst_mask */ | |
| b34976b6 | 319 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
320 | |
| 321 | /* Bits 16-31 of an address. */ | |
| 322 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
| 323 | 16, /* rightshift */ | |
| 324 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 325 | 16, /* bitsize */ | |
| b34976b6 | 326 | FALSE, /* pc_relative */ |
| 5bd4f169 | 327 | 0, /* bitpos */ |
| f9c6b907 | 328 | complain_overflow_signed, /* complain_on_overflow */ |
| 5bd4f169 AM |
329 | bfd_elf_generic_reloc, /* special_function */ |
| 330 | "R_PPC64_ADDR16_HI", /* name */ | |
| b34976b6 | 331 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
332 | 0, /* src_mask */ |
| 333 | 0xffff, /* dst_mask */ | |
| b34976b6 | 334 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
335 | |
| 336 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
| 337 | bits, treated as a signed number, is negative. */ | |
| 338 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
| 339 | 16, /* rightshift */ | |
| 340 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 341 | 16, /* bitsize */ | |
| b34976b6 | 342 | FALSE, /* pc_relative */ |
| 5bd4f169 | 343 | 0, /* bitpos */ |
| f9c6b907 | 344 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 345 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 346 | "R_PPC64_ADDR16_HA", /* name */ |
| b34976b6 | 347 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
348 | 0, /* src_mask */ |
| 349 | 0xffff, /* dst_mask */ | |
| b34976b6 | 350 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
351 | |
| 352 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
| 353 | FIXME: we don't check that, we just clear them. */ | |
| 354 | HOWTO (R_PPC64_ADDR14, /* type */ | |
| 355 | 0, /* rightshift */ | |
| 356 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 357 | 16, /* bitsize */ | |
| b34976b6 | 358 | FALSE, /* pc_relative */ |
| 5bd4f169 | 359 | 0, /* bitpos */ |
| b80eed39 | 360 | complain_overflow_signed, /* complain_on_overflow */ |
| 2441e016 | 361 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 362 | "R_PPC64_ADDR14", /* name */ |
| b34976b6 | 363 | FALSE, /* partial_inplace */ |
| d006db6c | 364 | 0, /* src_mask */ |
| f5e87a1d | 365 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 366 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
367 | |
| 368 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 369 | indicate that the branch is expected to be taken. The lower two | |
| 370 | bits must be zero. */ | |
| 371 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
| 372 | 0, /* rightshift */ | |
| 373 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 374 | 16, /* bitsize */ | |
| b34976b6 | 375 | FALSE, /* pc_relative */ |
| 5bd4f169 | 376 | 0, /* bitpos */ |
| b80eed39 | 377 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 378 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 379 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
| b34976b6 | 380 | FALSE, /* partial_inplace */ |
| d006db6c | 381 | 0, /* src_mask */ |
| f5e87a1d | 382 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 383 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
384 | |
| 385 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 386 | indicate that the branch is not expected to be taken. The lower | |
| 387 | two bits must be zero. */ | |
| 388 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
| 389 | 0, /* rightshift */ | |
| 390 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 391 | 16, /* bitsize */ | |
| b34976b6 | 392 | FALSE, /* pc_relative */ |
| 5bd4f169 | 393 | 0, /* bitpos */ |
| b80eed39 | 394 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 395 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 396 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
| b34976b6 | 397 | FALSE, /* partial_inplace */ |
| d006db6c | 398 | 0, /* src_mask */ |
| f5e87a1d | 399 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 400 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
401 | |
| 402 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
| 403 | HOWTO (R_PPC64_REL24, /* type */ | |
| 404 | 0, /* rightshift */ | |
| 405 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 406 | 26, /* bitsize */ | |
| b34976b6 | 407 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
408 | 0, /* bitpos */ |
| 409 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 410 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 411 | "R_PPC64_REL24", /* name */ |
| b34976b6 | 412 | FALSE, /* partial_inplace */ |
| d006db6c | 413 | 0, /* src_mask */ |
| f5e87a1d | 414 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 415 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
416 | |
| 417 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
| 418 | HOWTO (R_PPC64_REL14, /* type */ | |
| 419 | 0, /* rightshift */ | |
| 420 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 421 | 16, /* bitsize */ | |
| b34976b6 | 422 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
423 | 0, /* bitpos */ |
| 424 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 425 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 426 | "R_PPC64_REL14", /* name */ |
| b34976b6 | 427 | FALSE, /* partial_inplace */ |
| d006db6c | 428 | 0, /* src_mask */ |
| f5e87a1d | 429 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 430 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
431 | |
| 432 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 433 | the branch is expected to be taken. The lower two bits must be | |
| 434 | zero. */ | |
| 435 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
| 436 | 0, /* rightshift */ | |
| 437 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 438 | 16, /* bitsize */ | |
| b34976b6 | 439 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
440 | 0, /* bitpos */ |
| 441 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 442 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 443 | "R_PPC64_REL14_BRTAKEN", /* name */ |
| b34976b6 | 444 | FALSE, /* partial_inplace */ |
| d006db6c | 445 | 0, /* src_mask */ |
| f5e87a1d | 446 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 447 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
448 | |
| 449 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 450 | the branch is not expected to be taken. The lower two bits must | |
| 451 | be zero. */ | |
| 452 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
| 453 | 0, /* rightshift */ | |
| 454 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 455 | 16, /* bitsize */ | |
| b34976b6 | 456 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
457 | 0, /* bitpos */ |
| 458 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 459 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 460 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
| b34976b6 | 461 | FALSE, /* partial_inplace */ |
| d006db6c | 462 | 0, /* src_mask */ |
| f5e87a1d | 463 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 464 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
465 | |
| 466 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
| 467 | symbol. */ | |
| 468 | HOWTO (R_PPC64_GOT16, /* type */ | |
| 469 | 0, /* rightshift */ | |
| 470 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 471 | 16, /* bitsize */ | |
| b34976b6 | 472 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
473 | 0, /* bitpos */ |
| 474 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 475 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 476 | "R_PPC64_GOT16", /* name */ |
| b34976b6 | 477 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
478 | 0, /* src_mask */ |
| 479 | 0xffff, /* dst_mask */ | |
| b34976b6 | 480 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
481 | |
| 482 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
| 483 | the symbol. */ | |
| 484 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
| 485 | 0, /* rightshift */ | |
| 486 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 487 | 16, /* bitsize */ | |
| b34976b6 | 488 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
489 | 0, /* bitpos */ |
| 490 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 491 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 492 | "R_PPC64_GOT16_LO", /* name */ |
| b34976b6 | 493 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
494 | 0, /* src_mask */ |
| 495 | 0xffff, /* dst_mask */ | |
| b34976b6 | 496 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
497 | |
| 498 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
| 499 | the symbol. */ | |
| 500 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
| 501 | 16, /* rightshift */ | |
| 502 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 503 | 16, /* bitsize */ | |
| b34976b6 | 504 | FALSE, /* pc_relative */ |
| 5bd4f169 | 505 | 0, /* bitpos */ |
| f9c6b907 | 506 | complain_overflow_signed,/* complain_on_overflow */ |
| 805fc799 | 507 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 508 | "R_PPC64_GOT16_HI", /* name */ |
| b34976b6 | 509 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
510 | 0, /* src_mask */ |
| 511 | 0xffff, /* dst_mask */ | |
| b34976b6 | 512 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
513 | |
| 514 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
| 515 | the symbol. */ | |
| 516 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
| 517 | 16, /* rightshift */ | |
| 518 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 519 | 16, /* bitsize */ | |
| b34976b6 | 520 | FALSE, /* pc_relative */ |
| 5bd4f169 | 521 | 0, /* bitpos */ |
| f9c6b907 | 522 | complain_overflow_signed,/* complain_on_overflow */ |
| 805fc799 | 523 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 524 | "R_PPC64_GOT16_HA", /* name */ |
| b34976b6 | 525 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
526 | 0, /* src_mask */ |
| 527 | 0xffff, /* dst_mask */ | |
| b34976b6 | 528 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
529 | |
| 530 | /* This is used only by the dynamic linker. The symbol should exist | |
| 531 | both in the object being run and in some shared library. The | |
| 532 | dynamic linker copies the data addressed by the symbol from the | |
| 533 | shared library into the object, because the object being | |
| 534 | run has to have the data at some particular address. */ | |
| 535 | HOWTO (R_PPC64_COPY, /* type */ | |
| 536 | 0, /* rightshift */ | |
| f5e87a1d AM |
537 | 0, /* this one is variable size */ |
| 538 | 0, /* bitsize */ | |
| b34976b6 | 539 | FALSE, /* pc_relative */ |
| 5bd4f169 | 540 | 0, /* bitpos */ |
| f5e87a1d AM |
541 | complain_overflow_dont, /* complain_on_overflow */ |
| 542 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 5bd4f169 | 543 | "R_PPC64_COPY", /* name */ |
| b34976b6 | 544 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
545 | 0, /* src_mask */ |
| 546 | 0, /* dst_mask */ | |
| b34976b6 | 547 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
548 | |
| 549 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
| 550 | entries. */ | |
| 551 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
| 552 | 0, /* rightshift */ | |
| 553 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 554 | 64, /* bitsize */ | |
| b34976b6 | 555 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
556 | 0, /* bitpos */ |
| 557 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 558 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 559 | "R_PPC64_GLOB_DAT", /* name */ |
| b34976b6 | 560 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 561 | 0, /* src_mask */ |
| f5e87a1d | 562 | ONES (64), /* dst_mask */ |
| b34976b6 | 563 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
564 | |
| 565 | /* Created by the link editor. Marks a procedure linkage table | |
| 566 | entry for a symbol. */ | |
| 567 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
| 568 | 0, /* rightshift */ | |
| 569 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 570 | 0, /* bitsize */ | |
| b34976b6 | 571 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
572 | 0, /* bitpos */ |
| 573 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 574 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 575 | "R_PPC64_JMP_SLOT", /* name */ |
| b34976b6 | 576 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
577 | 0, /* src_mask */ |
| 578 | 0, /* dst_mask */ | |
| b34976b6 | 579 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
580 | |
| 581 | /* Used only by the dynamic linker. When the object is run, this | |
| 582 | doubleword64 is set to the load address of the object, plus the | |
| 583 | addend. */ | |
| 584 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
| 585 | 0, /* rightshift */ | |
| 586 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 587 | 64, /* bitsize */ | |
| b34976b6 | 588 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
589 | 0, /* bitpos */ |
| 590 | complain_overflow_dont, /* complain_on_overflow */ | |
| 591 | bfd_elf_generic_reloc, /* special_function */ | |
| 592 | "R_PPC64_RELATIVE", /* name */ | |
| b34976b6 | 593 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 594 | 0, /* src_mask */ |
| f5e87a1d | 595 | ONES (64), /* dst_mask */ |
| b34976b6 | 596 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
597 | |
| 598 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
| 599 | HOWTO (R_PPC64_UADDR32, /* type */ | |
| 600 | 0, /* rightshift */ | |
| 601 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 602 | 32, /* bitsize */ | |
| b34976b6 | 603 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
604 | 0, /* bitpos */ |
| 605 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 606 | bfd_elf_generic_reloc, /* special_function */ | |
| 607 | "R_PPC64_UADDR32", /* name */ | |
| b34976b6 | 608 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
609 | 0, /* src_mask */ |
| 610 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 611 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
612 | |
| 613 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
| 614 | HOWTO (R_PPC64_UADDR16, /* type */ | |
| 615 | 0, /* rightshift */ | |
| 616 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 617 | 16, /* bitsize */ | |
| b34976b6 | 618 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
619 | 0, /* bitpos */ |
| 620 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 621 | bfd_elf_generic_reloc, /* special_function */ | |
| 622 | "R_PPC64_UADDR16", /* name */ | |
| b34976b6 | 623 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
624 | 0, /* src_mask */ |
| 625 | 0xffff, /* dst_mask */ | |
| b34976b6 | 626 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
627 | |
| 628 | /* 32-bit PC relative. */ | |
| 629 | HOWTO (R_PPC64_REL32, /* type */ | |
| 630 | 0, /* rightshift */ | |
| 631 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 632 | 32, /* bitsize */ | |
| b34976b6 | 633 | TRUE, /* pc_relative */ |
| 5bd4f169 | 634 | 0, /* bitpos */ |
| 5bd4f169 AM |
635 | complain_overflow_signed, /* complain_on_overflow */ |
| 636 | bfd_elf_generic_reloc, /* special_function */ | |
| 637 | "R_PPC64_REL32", /* name */ | |
| b34976b6 | 638 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
639 | 0, /* src_mask */ |
| 640 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 641 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 642 | |
| 10ed1bba | 643 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
644 | HOWTO (R_PPC64_PLT32, /* type */ |
| 645 | 0, /* rightshift */ | |
| 646 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 647 | 32, /* bitsize */ | |
| b34976b6 | 648 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
649 | 0, /* bitpos */ |
| 650 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 651 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 652 | "R_PPC64_PLT32", /* name */ |
| b34976b6 | 653 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 654 | 0, /* src_mask */ |
| f5e87a1d | 655 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 656 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
657 | |
| 658 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
| 659 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
| 660 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
| 661 | 0, /* rightshift */ | |
| 662 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 663 | 32, /* bitsize */ | |
| b34976b6 | 664 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
665 | 0, /* bitpos */ |
| 666 | complain_overflow_signed, /* complain_on_overflow */ | |
| 667 | bfd_elf_generic_reloc, /* special_function */ | |
| 668 | "R_PPC64_PLTREL32", /* name */ | |
| b34976b6 | 669 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 670 | 0, /* src_mask */ |
| f5e87a1d | 671 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 672 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
673 | |
| 674 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
| 675 | the symbol. */ | |
| 676 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
| 677 | 0, /* rightshift */ | |
| 678 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 679 | 16, /* bitsize */ | |
| b34976b6 | 680 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
681 | 0, /* bitpos */ |
| 682 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 683 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 684 | "R_PPC64_PLT16_LO", /* name */ |
| b34976b6 | 685 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
686 | 0, /* src_mask */ |
| 687 | 0xffff, /* dst_mask */ | |
| b34976b6 | 688 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
689 | |
| 690 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
| 691 | the symbol. */ | |
| 692 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
| 693 | 16, /* rightshift */ | |
| 694 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 695 | 16, /* bitsize */ | |
| b34976b6 | 696 | FALSE, /* pc_relative */ |
| 5bd4f169 | 697 | 0, /* bitpos */ |
| f9c6b907 | 698 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 699 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 700 | "R_PPC64_PLT16_HI", /* name */ |
| b34976b6 | 701 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
702 | 0, /* src_mask */ |
| 703 | 0xffff, /* dst_mask */ | |
| b34976b6 | 704 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
705 | |
| 706 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
| 707 | the symbol. */ | |
| 708 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
| 709 | 16, /* rightshift */ | |
| 710 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 711 | 16, /* bitsize */ | |
| b34976b6 | 712 | FALSE, /* pc_relative */ |
| 5bd4f169 | 713 | 0, /* bitpos */ |
| f9c6b907 | 714 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 715 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 716 | "R_PPC64_PLT16_HA", /* name */ |
| b34976b6 | 717 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
718 | 0, /* src_mask */ |
| 719 | 0xffff, /* dst_mask */ | |
| b34976b6 | 720 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 721 | |
| c061c2d8 | 722 | /* 16-bit section relative relocation. */ |
| 5bd4f169 AM |
723 | HOWTO (R_PPC64_SECTOFF, /* type */ |
| 724 | 0, /* rightshift */ | |
| c061c2d8 AM |
725 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 726 | 16, /* bitsize */ | |
| b34976b6 | 727 | FALSE, /* pc_relative */ |
| 5bd4f169 | 728 | 0, /* bitpos */ |
| b80eed39 | 729 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 730 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 731 | "R_PPC64_SECTOFF", /* name */ |
| b34976b6 | 732 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 733 | 0, /* src_mask */ |
| c061c2d8 | 734 | 0xffff, /* dst_mask */ |
| b34976b6 | 735 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 736 | |
| c061c2d8 | 737 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
| 5bd4f169 AM |
738 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
| 739 | 0, /* rightshift */ | |
| 740 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 741 | 16, /* bitsize */ | |
| b34976b6 | 742 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
743 | 0, /* bitpos */ |
| 744 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 745 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 746 | "R_PPC64_SECTOFF_LO", /* name */ |
| b34976b6 | 747 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
748 | 0, /* src_mask */ |
| 749 | 0xffff, /* dst_mask */ | |
| b34976b6 | 750 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
751 | |
| 752 | /* 16-bit upper half section relative relocation. */ | |
| 753 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
| 754 | 16, /* rightshift */ | |
| 755 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 756 | 16, /* bitsize */ | |
| b34976b6 | 757 | FALSE, /* pc_relative */ |
| 5bd4f169 | 758 | 0, /* bitpos */ |
| f9c6b907 | 759 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 760 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 761 | "R_PPC64_SECTOFF_HI", /* name */ |
| b34976b6 | 762 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
763 | 0, /* src_mask */ |
| 764 | 0xffff, /* dst_mask */ | |
| b34976b6 | 765 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
766 | |
| 767 | /* 16-bit upper half adjusted section relative relocation. */ | |
| 768 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
| 769 | 16, /* rightshift */ | |
| 770 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 771 | 16, /* bitsize */ | |
| b34976b6 | 772 | FALSE, /* pc_relative */ |
| 5bd4f169 | 773 | 0, /* bitpos */ |
| f9c6b907 | 774 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 775 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
| 5bd4f169 | 776 | "R_PPC64_SECTOFF_HA", /* name */ |
| b34976b6 | 777 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
778 | 0, /* src_mask */ |
| 779 | 0xffff, /* dst_mask */ | |
| b34976b6 | 780 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 781 | |
| 04c9666a AM |
782 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
| 783 | HOWTO (R_PPC64_REL30, /* type */ | |
| 5bd4f169 AM |
784 | 2, /* rightshift */ |
| 785 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 786 | 30, /* bitsize */ | |
| b34976b6 | 787 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
788 | 0, /* bitpos */ |
| 789 | complain_overflow_dont, /* complain_on_overflow */ | |
| 790 | bfd_elf_generic_reloc, /* special_function */ | |
| 04c9666a | 791 | "R_PPC64_REL30", /* name */ |
| b34976b6 | 792 | FALSE, /* partial_inplace */ |
| d006db6c | 793 | 0, /* src_mask */ |
| 5bd4f169 | 794 | 0xfffffffc, /* dst_mask */ |
| b34976b6 | 795 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
796 | |
| 797 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
| 798 | ||
| 799 | /* A standard 64-bit relocation. */ | |
| 800 | HOWTO (R_PPC64_ADDR64, /* type */ | |
| 801 | 0, /* rightshift */ | |
| 802 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 803 | 64, /* bitsize */ | |
| b34976b6 | 804 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
805 | 0, /* bitpos */ |
| 806 | complain_overflow_dont, /* complain_on_overflow */ | |
| 807 | bfd_elf_generic_reloc, /* special_function */ | |
| 808 | "R_PPC64_ADDR64", /* name */ | |
| b34976b6 | 809 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 810 | 0, /* src_mask */ |
| f5e87a1d | 811 | ONES (64), /* dst_mask */ |
| b34976b6 | 812 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
813 | |
| 814 | /* The bits 32-47 of an address. */ | |
| 815 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
| 816 | 32, /* rightshift */ | |
| 817 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 818 | 16, /* bitsize */ | |
| b34976b6 | 819 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
820 | 0, /* bitpos */ |
| 821 | complain_overflow_dont, /* complain_on_overflow */ | |
| 822 | bfd_elf_generic_reloc, /* special_function */ | |
| 823 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
| b34976b6 | 824 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
825 | 0, /* src_mask */ |
| 826 | 0xffff, /* dst_mask */ | |
| b34976b6 | 827 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
828 | |
| 829 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
| 830 | 16 bits, treated as a signed number, is negative. */ | |
| 831 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
| 832 | 32, /* rightshift */ | |
| 833 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 834 | 16, /* bitsize */ | |
| b34976b6 | 835 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
836 | 0, /* bitpos */ |
| 837 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 838 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 839 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
| b34976b6 | 840 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
841 | 0, /* src_mask */ |
| 842 | 0xffff, /* dst_mask */ | |
| b34976b6 | 843 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
844 | |
| 845 | /* The bits 48-63 of an address. */ | |
| 846 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
| 847 | 48, /* rightshift */ | |
| 848 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 849 | 16, /* bitsize */ | |
| b34976b6 | 850 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
851 | 0, /* bitpos */ |
| 852 | complain_overflow_dont, /* complain_on_overflow */ | |
| 853 | bfd_elf_generic_reloc, /* special_function */ | |
| 854 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
| b34976b6 | 855 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
856 | 0, /* src_mask */ |
| 857 | 0xffff, /* dst_mask */ | |
| b34976b6 | 858 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
859 | |
| 860 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
| 861 | 16 bits, treated as a signed number, is negative. */ | |
| 862 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
| 863 | 48, /* rightshift */ | |
| 864 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 865 | 16, /* bitsize */ | |
| b34976b6 | 866 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
867 | 0, /* bitpos */ |
| 868 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 869 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 870 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
| b34976b6 | 871 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
872 | 0, /* src_mask */ |
| 873 | 0xffff, /* dst_mask */ | |
| b34976b6 | 874 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
875 | |
| 876 | /* Like ADDR64, but may be unaligned. */ | |
| 877 | HOWTO (R_PPC64_UADDR64, /* type */ | |
| 878 | 0, /* rightshift */ | |
| 879 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 880 | 64, /* bitsize */ | |
| b34976b6 | 881 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
882 | 0, /* bitpos */ |
| 883 | complain_overflow_dont, /* complain_on_overflow */ | |
| 884 | bfd_elf_generic_reloc, /* special_function */ | |
| 885 | "R_PPC64_UADDR64", /* name */ | |
| b34976b6 | 886 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 887 | 0, /* src_mask */ |
| f5e87a1d | 888 | ONES (64), /* dst_mask */ |
| b34976b6 | 889 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
890 | |
| 891 | /* 64-bit relative relocation. */ | |
| 892 | HOWTO (R_PPC64_REL64, /* type */ | |
| 893 | 0, /* rightshift */ | |
| 894 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 895 | 64, /* bitsize */ | |
| b34976b6 | 896 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
897 | 0, /* bitpos */ |
| 898 | complain_overflow_dont, /* complain_on_overflow */ | |
| 899 | bfd_elf_generic_reloc, /* special_function */ | |
| 900 | "R_PPC64_REL64", /* name */ | |
| b34976b6 | 901 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 902 | 0, /* src_mask */ |
| f5e87a1d | 903 | ONES (64), /* dst_mask */ |
| b34976b6 | 904 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 905 | |
| cedb70c5 | 906 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
907 | HOWTO (R_PPC64_PLT64, /* type */ |
| 908 | 0, /* rightshift */ | |
| 909 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 910 | 64, /* bitsize */ | |
| b34976b6 | 911 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
912 | 0, /* bitpos */ |
| 913 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 914 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 915 | "R_PPC64_PLT64", /* name */ |
| b34976b6 | 916 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 917 | 0, /* src_mask */ |
| f5e87a1d | 918 | ONES (64), /* dst_mask */ |
| b34976b6 | 919 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
920 | |
| 921 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
| 922 | table. */ | |
| 923 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
| 924 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
| 925 | 0, /* rightshift */ | |
| 926 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 927 | 64, /* bitsize */ | |
| b34976b6 | 928 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
929 | 0, /* bitpos */ |
| 930 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 931 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 932 | "R_PPC64_PLTREL64", /* name */ |
| b34976b6 | 933 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 934 | 0, /* src_mask */ |
| f5e87a1d | 935 | ONES (64), /* dst_mask */ |
| b34976b6 | 936 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
937 | |
| 938 | /* 16 bit TOC-relative relocation. */ | |
| 939 | ||
| 940 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
| 941 | HOWTO (R_PPC64_TOC16, /* type */ | |
| 942 | 0, /* rightshift */ | |
| 943 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 944 | 16, /* bitsize */ | |
| b34976b6 | 945 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
946 | 0, /* bitpos */ |
| 947 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 948 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 949 | "R_PPC64_TOC16", /* name */ |
| b34976b6 | 950 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
951 | 0, /* src_mask */ |
| 952 | 0xffff, /* dst_mask */ | |
| b34976b6 | 953 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
954 | |
| 955 | /* 16 bit TOC-relative relocation without overflow. */ | |
| 956 | ||
| 957 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
| 958 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
| 959 | 0, /* rightshift */ | |
| 960 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 961 | 16, /* bitsize */ | |
| b34976b6 | 962 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
963 | 0, /* bitpos */ |
| 964 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 965 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 966 | "R_PPC64_TOC16_LO", /* name */ |
| b34976b6 | 967 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
968 | 0, /* src_mask */ |
| 969 | 0xffff, /* dst_mask */ | |
| b34976b6 | 970 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
971 | |
| 972 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
| 973 | ||
| 974 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
| 975 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
| 976 | 16, /* rightshift */ | |
| 977 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 978 | 16, /* bitsize */ | |
| b34976b6 | 979 | FALSE, /* pc_relative */ |
| 5bd4f169 | 980 | 0, /* bitpos */ |
| f9c6b907 | 981 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 982 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 983 | "R_PPC64_TOC16_HI", /* name */ |
| b34976b6 | 984 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
985 | 0, /* src_mask */ |
| 986 | 0xffff, /* dst_mask */ | |
| b34976b6 | 987 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
988 | |
| 989 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
| 990 | contents of the low 16 bits, treated as a signed number, is | |
| 991 | negative. */ | |
| 992 | ||
| 993 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
| 994 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
| 995 | 16, /* rightshift */ | |
| 996 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 997 | 16, /* bitsize */ | |
| b34976b6 | 998 | FALSE, /* pc_relative */ |
| 5bd4f169 | 999 | 0, /* bitpos */ |
| f9c6b907 | 1000 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1001 | ppc64_elf_toc_ha_reloc, /* special_function */ |
| 5bd4f169 | 1002 | "R_PPC64_TOC16_HA", /* name */ |
| b34976b6 | 1003 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1004 | 0, /* src_mask */ |
| 1005 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1006 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1007 | |
| 1008 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
| 1009 | ||
| 1010 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
| 1011 | HOWTO (R_PPC64_TOC, /* type */ | |
| 1012 | 0, /* rightshift */ | |
| 1013 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1014 | 64, /* bitsize */ | |
| b34976b6 | 1015 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1016 | 0, /* bitpos */ |
| b80eed39 | 1017 | complain_overflow_dont, /* complain_on_overflow */ |
| 805fc799 | 1018 | ppc64_elf_toc64_reloc, /* special_function */ |
| 5bd4f169 | 1019 | "R_PPC64_TOC", /* name */ |
| b34976b6 | 1020 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 1021 | 0, /* src_mask */ |
| f5e87a1d | 1022 | ONES (64), /* dst_mask */ |
| b34976b6 | 1023 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1024 | |
| 1025 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
| 1026 | value to relocate may (!) refer to a PLT entry which the link | |
| 1027 | editor (a) may replace with the symbol value. If the link editor | |
| 1028 | is unable to fully resolve the symbol, it may (b) create a PLT | |
| 1029 | entry and store the address to the new PLT entry in the GOT. | |
| 1030 | This permits lazy resolution of function symbols at run time. | |
| 1031 | The link editor may also skip all of this and just (c) emit a | |
| 1032 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
| 1033 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
| 1034 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
| 1035 | 0, /* rightshift */ | |
| 1036 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1037 | 16, /* bitsize */ | |
| b34976b6 | 1038 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1039 | 0, /* bitpos */ |
| 1040 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 1041 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb AM |
1042 | "R_PPC64_PLTGOT16", /* name */ |
| 1043 | FALSE, /* partial_inplace */ | |
| 1044 | 0, /* src_mask */ | |
| 1045 | 0xffff, /* dst_mask */ | |
| 1046 | FALSE), /* pcrel_offset */ | |
| 1047 | ||
| 1048 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
| 1049 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1050 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
| 1051 | 0, /* rightshift */ | |
| 1052 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1053 | 16, /* bitsize */ | |
| 1054 | FALSE, /* pc_relative */ | |
| 1055 | 0, /* bitpos */ | |
| 1056 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1057 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1058 | "R_PPC64_PLTGOT16_LO", /* name */ | |
| 1059 | FALSE, /* partial_inplace */ | |
| 1060 | 0, /* src_mask */ | |
| 1061 | 0xffff, /* dst_mask */ | |
| 1062 | FALSE), /* pcrel_offset */ | |
| 1063 | ||
| 1064 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
| 1065 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
| 1066 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
| 1067 | 16, /* rightshift */ | |
| 1068 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1069 | 16, /* bitsize */ | |
| 1070 | FALSE, /* pc_relative */ | |
| 1071 | 0, /* bitpos */ | |
| f9c6b907 | 1072 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1073 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1074 | "R_PPC64_PLTGOT16_HI", /* name */ | |
| 1075 | FALSE, /* partial_inplace */ | |
| 1076 | 0, /* src_mask */ | |
| 1077 | 0xffff, /* dst_mask */ | |
| 1078 | FALSE), /* pcrel_offset */ | |
| 1079 | ||
| 1080 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
| 1081 | 1 if the contents of the low 16 bits, treated as a signed number, | |
| 1082 | is negative. */ | |
| 1083 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
| 1084 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
| 1085 | 16, /* rightshift */ | |
| 1086 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1087 | 16, /* bitsize */ | |
| 1088 | FALSE, /* pc_relative */ | |
| 1089 | 0, /* bitpos */ | |
| f9c6b907 | 1090 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1091 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1092 | "R_PPC64_PLTGOT16_HA", /* name */ | |
| 1093 | FALSE, /* partial_inplace */ | |
| 1094 | 0, /* src_mask */ | |
| 1095 | 0xffff, /* dst_mask */ | |
| 1096 | FALSE), /* pcrel_offset */ | |
| 1097 | ||
| 1098 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
| 1099 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
| 1100 | 0, /* rightshift */ | |
| 1101 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1102 | 16, /* bitsize */ | |
| 1103 | FALSE, /* pc_relative */ | |
| 1104 | 0, /* bitpos */ | |
| b80eed39 | 1105 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1106 | bfd_elf_generic_reloc, /* special_function */ |
| 1107 | "R_PPC64_ADDR16_DS", /* name */ | |
| 1108 | FALSE, /* partial_inplace */ | |
| 1109 | 0, /* src_mask */ | |
| 1110 | 0xfffc, /* dst_mask */ | |
| 1111 | FALSE), /* pcrel_offset */ | |
| 1112 | ||
| 1113 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
| 1114 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
| 1115 | 0, /* rightshift */ | |
| 1116 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1117 | 16, /* bitsize */ | |
| 1118 | FALSE, /* pc_relative */ | |
| 1119 | 0, /* bitpos */ | |
| 1120 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1121 | bfd_elf_generic_reloc, /* special_function */ | |
| 1122 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
| 1123 | FALSE, /* partial_inplace */ | |
| 1124 | 0, /* src_mask */ | |
| 1125 | 0xfffc, /* dst_mask */ | |
| 1126 | FALSE), /* pcrel_offset */ | |
| 1127 | ||
| 1128 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
| 1129 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
| 1130 | 0, /* rightshift */ | |
| 1131 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1132 | 16, /* bitsize */ | |
| 1133 | FALSE, /* pc_relative */ | |
| 1134 | 0, /* bitpos */ | |
| 1135 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1136 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1137 | "R_PPC64_GOT16_DS", /* name */ | |
| 1138 | FALSE, /* partial_inplace */ | |
| 1139 | 0, /* src_mask */ | |
| 1140 | 0xfffc, /* dst_mask */ | |
| 1141 | FALSE), /* pcrel_offset */ | |
| 1142 | ||
| 1143 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
| 1144 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
| 1145 | 0, /* rightshift */ | |
| 1146 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1147 | 16, /* bitsize */ | |
| 1148 | FALSE, /* pc_relative */ | |
| 1149 | 0, /* bitpos */ | |
| 1150 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1151 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1152 | "R_PPC64_GOT16_LO_DS", /* name */ | |
| 1153 | FALSE, /* partial_inplace */ | |
| 1154 | 0, /* src_mask */ | |
| 1155 | 0xfffc, /* dst_mask */ | |
| 1156 | FALSE), /* pcrel_offset */ | |
| 1157 | ||
| 1158 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
| 1159 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
| 1160 | 0, /* rightshift */ | |
| 1161 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1162 | 16, /* bitsize */ | |
| 1163 | FALSE, /* pc_relative */ | |
| 1164 | 0, /* bitpos */ | |
| 1165 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1166 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1167 | "R_PPC64_PLT16_LO_DS", /* name */ | |
| 1168 | FALSE, /* partial_inplace */ | |
| 1169 | 0, /* src_mask */ | |
| 1170 | 0xfffc, /* dst_mask */ | |
| 1171 | FALSE), /* pcrel_offset */ | |
| 1172 | ||
| 1173 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
| 1174 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
| 1175 | 0, /* rightshift */ | |
| 1176 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1177 | 16, /* bitsize */ | |
| 1178 | FALSE, /* pc_relative */ | |
| 1179 | 0, /* bitpos */ | |
| b80eed39 | 1180 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1181 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 1182 | "R_PPC64_SECTOFF_DS", /* name */ | |
| 1183 | FALSE, /* partial_inplace */ | |
| 1184 | 0, /* src_mask */ | |
| 1185 | 0xfffc, /* dst_mask */ | |
| 1186 | FALSE), /* pcrel_offset */ | |
| 1187 | ||
| 1188 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
| 1189 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
| 1190 | 0, /* rightshift */ | |
| 1191 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1192 | 16, /* bitsize */ | |
| 1193 | FALSE, /* pc_relative */ | |
| 1194 | 0, /* bitpos */ | |
| 1195 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1196 | ppc64_elf_sectoff_reloc, /* special_function */ | |
| 1197 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
| 1198 | FALSE, /* partial_inplace */ | |
| 1199 | 0, /* src_mask */ | |
| 1200 | 0xfffc, /* dst_mask */ | |
| 1201 | FALSE), /* pcrel_offset */ | |
| 1202 | ||
| 1203 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
| 1204 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
| 1205 | 0, /* rightshift */ | |
| 1206 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1207 | 16, /* bitsize */ | |
| 1208 | FALSE, /* pc_relative */ | |
| 1209 | 0, /* bitpos */ | |
| 1210 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1211 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1212 | "R_PPC64_TOC16_DS", /* name */ | |
| 1213 | FALSE, /* partial_inplace */ | |
| 1214 | 0, /* src_mask */ | |
| 1215 | 0xfffc, /* dst_mask */ | |
| 1216 | FALSE), /* pcrel_offset */ | |
| 1217 | ||
| 1218 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
| 1219 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
| 1220 | 0, /* rightshift */ | |
| 1221 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1222 | 16, /* bitsize */ | |
| 1223 | FALSE, /* pc_relative */ | |
| 1224 | 0, /* bitpos */ | |
| 1225 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1226 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1227 | "R_PPC64_TOC16_LO_DS", /* name */ | |
| 1228 | FALSE, /* partial_inplace */ | |
| 1229 | 0, /* src_mask */ | |
| 1230 | 0xfffc, /* dst_mask */ | |
| 1231 | FALSE), /* pcrel_offset */ | |
| 1232 | ||
| 1233 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
| 1234 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
| 6bfdb61b | 1235 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
| 411e1bfb AM |
1236 | 0, /* rightshift */ |
| 1237 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1238 | 16, /* bitsize */ | |
| 1239 | FALSE, /* pc_relative */ | |
| 1240 | 0, /* bitpos */ | |
| 1241 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1242 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1243 | "R_PPC64_PLTGOT16_DS", /* name */ | |
| 1244 | FALSE, /* partial_inplace */ | |
| 1245 | 0, /* src_mask */ | |
| 1246 | 0xfffc, /* dst_mask */ | |
| 1247 | FALSE), /* pcrel_offset */ | |
| 1248 | ||
| 1249 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
| 1250 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1251 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
| 1252 | 0, /* rightshift */ | |
| 1253 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1254 | 16, /* bitsize */ | |
| 1255 | FALSE, /* pc_relative */ | |
| 1256 | 0, /* bitpos */ | |
| 1257 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1258 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1259 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
| 1260 | FALSE, /* partial_inplace */ | |
| 1261 | 0, /* src_mask */ | |
| 1262 | 0xfffc, /* dst_mask */ | |
| 1263 | FALSE), /* pcrel_offset */ | |
| 1264 | ||
| 727fc41e | 1265 | /* Marker relocs for TLS. */ |
| 411e1bfb AM |
1266 | HOWTO (R_PPC64_TLS, |
| 1267 | 0, /* rightshift */ | |
| 1268 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1269 | 32, /* bitsize */ | |
| 1270 | FALSE, /* pc_relative */ | |
| 1271 | 0, /* bitpos */ | |
| 1272 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1273 | bfd_elf_generic_reloc, /* special_function */ | |
| 1274 | "R_PPC64_TLS", /* name */ | |
| 1275 | FALSE, /* partial_inplace */ | |
| 1276 | 0, /* src_mask */ | |
| 1277 | 0, /* dst_mask */ | |
| 1278 | FALSE), /* pcrel_offset */ | |
| 1279 | ||
| 727fc41e AM |
1280 | HOWTO (R_PPC64_TLSGD, |
| 1281 | 0, /* rightshift */ | |
| 1282 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1283 | 32, /* bitsize */ | |
| 1284 | FALSE, /* pc_relative */ | |
| 1285 | 0, /* bitpos */ | |
| 1286 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1287 | bfd_elf_generic_reloc, /* special_function */ | |
| 1288 | "R_PPC64_TLSGD", /* name */ | |
| 1289 | FALSE, /* partial_inplace */ | |
| 1290 | 0, /* src_mask */ | |
| 1291 | 0, /* dst_mask */ | |
| 1292 | FALSE), /* pcrel_offset */ | |
| 1293 | ||
| 1294 | HOWTO (R_PPC64_TLSLD, | |
| 1295 | 0, /* rightshift */ | |
| 1296 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1297 | 32, /* bitsize */ | |
| 1298 | FALSE, /* pc_relative */ | |
| 1299 | 0, /* bitpos */ | |
| 1300 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1301 | bfd_elf_generic_reloc, /* special_function */ | |
| 1302 | "R_PPC64_TLSLD", /* name */ | |
| 1303 | FALSE, /* partial_inplace */ | |
| 1304 | 0, /* src_mask */ | |
| 1305 | 0, /* dst_mask */ | |
| 1306 | FALSE), /* pcrel_offset */ | |
| 1307 | ||
| 3b421ab3 AM |
1308 | HOWTO (R_PPC64_TOCSAVE, |
| 1309 | 0, /* rightshift */ | |
| 1310 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1311 | 32, /* bitsize */ | |
| 1312 | FALSE, /* pc_relative */ | |
| 1313 | 0, /* bitpos */ | |
| 1314 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1315 | bfd_elf_generic_reloc, /* special_function */ | |
| 1316 | "R_PPC64_TOCSAVE", /* name */ | |
| 1317 | FALSE, /* partial_inplace */ | |
| 1318 | 0, /* src_mask */ | |
| 1319 | 0, /* dst_mask */ | |
| 1320 | FALSE), /* pcrel_offset */ | |
| 1321 | ||
| 411e1bfb AM |
1322 | /* Computes the load module index of the load module that contains the |
| 1323 | definition of its TLS sym. */ | |
| 1324 | HOWTO (R_PPC64_DTPMOD64, | |
| 1325 | 0, /* rightshift */ | |
| 1326 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1327 | 64, /* bitsize */ | |
| 1328 | FALSE, /* pc_relative */ | |
| 1329 | 0, /* bitpos */ | |
| 1330 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1331 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1332 | "R_PPC64_DTPMOD64", /* name */ | |
| 1333 | FALSE, /* partial_inplace */ | |
| 1334 | 0, /* src_mask */ | |
| 1335 | ONES (64), /* dst_mask */ | |
| 1336 | FALSE), /* pcrel_offset */ | |
| 1337 | ||
| 1338 | /* Computes a dtv-relative displacement, the difference between the value | |
| 1339 | of sym+add and the base address of the thread-local storage block that | |
| 1340 | contains the definition of sym, minus 0x8000. */ | |
| 1341 | HOWTO (R_PPC64_DTPREL64, | |
| 1342 | 0, /* rightshift */ | |
| 1343 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1344 | 64, /* bitsize */ | |
| 1345 | FALSE, /* pc_relative */ | |
| 1346 | 0, /* bitpos */ | |
| 1347 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1348 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1349 | "R_PPC64_DTPREL64", /* name */ | |
| 1350 | FALSE, /* partial_inplace */ | |
| 1351 | 0, /* src_mask */ | |
| 1352 | ONES (64), /* dst_mask */ | |
| 1353 | FALSE), /* pcrel_offset */ | |
| 1354 | ||
| 1355 | /* A 16 bit dtprel reloc. */ | |
| 1356 | HOWTO (R_PPC64_DTPREL16, | |
| 1357 | 0, /* rightshift */ | |
| 1358 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1359 | 16, /* bitsize */ | |
| 1360 | FALSE, /* pc_relative */ | |
| 1361 | 0, /* bitpos */ | |
| 1362 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1363 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1364 | "R_PPC64_DTPREL16", /* name */ | |
| 1365 | FALSE, /* partial_inplace */ | |
| 1366 | 0, /* src_mask */ | |
| 1367 | 0xffff, /* dst_mask */ | |
| 1368 | FALSE), /* pcrel_offset */ | |
| 1369 | ||
| 1370 | /* Like DTPREL16, but no overflow. */ | |
| 1371 | HOWTO (R_PPC64_DTPREL16_LO, | |
| 1372 | 0, /* rightshift */ | |
| 1373 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1374 | 16, /* bitsize */ | |
| 1375 | FALSE, /* pc_relative */ | |
| 1376 | 0, /* bitpos */ | |
| 1377 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1378 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1379 | "R_PPC64_DTPREL16_LO", /* name */ | |
| 1380 | FALSE, /* partial_inplace */ | |
| 1381 | 0, /* src_mask */ | |
| 1382 | 0xffff, /* dst_mask */ | |
| 1383 | FALSE), /* pcrel_offset */ | |
| 1384 | ||
| 1385 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
| 1386 | HOWTO (R_PPC64_DTPREL16_HI, | |
| 1387 | 16, /* rightshift */ | |
| 1388 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1389 | 16, /* bitsize */ | |
| 1390 | FALSE, /* pc_relative */ | |
| 1391 | 0, /* bitpos */ | |
| f9c6b907 | 1392 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1393 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1394 | "R_PPC64_DTPREL16_HI", /* name */ | |
| 1395 | FALSE, /* partial_inplace */ | |
| 1396 | 0, /* src_mask */ | |
| 1397 | 0xffff, /* dst_mask */ | |
| 1398 | FALSE), /* pcrel_offset */ | |
| 1399 | ||
| 1400 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
| 1401 | HOWTO (R_PPC64_DTPREL16_HA, | |
| 1402 | 16, /* rightshift */ | |
| 1403 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1404 | 16, /* bitsize */ | |
| 1405 | FALSE, /* pc_relative */ | |
| 1406 | 0, /* bitpos */ | |
| f9c6b907 | 1407 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1408 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1409 | "R_PPC64_DTPREL16_HA", /* name */ | |
| 1410 | FALSE, /* partial_inplace */ | |
| 1411 | 0, /* src_mask */ | |
| 1412 | 0xffff, /* dst_mask */ | |
| 1413 | FALSE), /* pcrel_offset */ | |
| 1414 | ||
| 1415 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
| 1416 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
| 1417 | 32, /* rightshift */ | |
| 1418 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1419 | 16, /* bitsize */ | |
| 1420 | FALSE, /* pc_relative */ | |
| 1421 | 0, /* bitpos */ | |
| 1422 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1423 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1424 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
| 1425 | FALSE, /* partial_inplace */ | |
| 1426 | 0, /* src_mask */ | |
| 1427 | 0xffff, /* dst_mask */ | |
| 1428 | FALSE), /* pcrel_offset */ | |
| 1429 | ||
| 1430 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1431 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
| 1432 | 32, /* rightshift */ | |
| 1433 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1434 | 16, /* bitsize */ | |
| 1435 | FALSE, /* pc_relative */ | |
| 1436 | 0, /* bitpos */ | |
| 1437 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1438 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1439 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
| 1440 | FALSE, /* partial_inplace */ | |
| 1441 | 0, /* src_mask */ | |
| 1442 | 0xffff, /* dst_mask */ | |
| 1443 | FALSE), /* pcrel_offset */ | |
| 1444 | ||
| 1445 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1446 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
| 1447 | 48, /* rightshift */ | |
| 1448 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1449 | 16, /* bitsize */ | |
| 1450 | FALSE, /* pc_relative */ | |
| 1451 | 0, /* bitpos */ | |
| 1452 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1453 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1454 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
| 1455 | FALSE, /* partial_inplace */ | |
| 1456 | 0, /* src_mask */ | |
| 1457 | 0xffff, /* dst_mask */ | |
| 1458 | FALSE), /* pcrel_offset */ | |
| 1459 | ||
| 1460 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1461 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
| 1462 | 48, /* rightshift */ | |
| 1463 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1464 | 16, /* bitsize */ | |
| 1465 | FALSE, /* pc_relative */ | |
| 1466 | 0, /* bitpos */ | |
| 1467 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1468 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1469 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
| 1470 | FALSE, /* partial_inplace */ | |
| 1471 | 0, /* src_mask */ | |
| 1472 | 0xffff, /* dst_mask */ | |
| 1473 | FALSE), /* pcrel_offset */ | |
| 1474 | ||
| 1475 | /* Like DTPREL16, but for insns with a DS field. */ | |
| 1476 | HOWTO (R_PPC64_DTPREL16_DS, | |
| 1477 | 0, /* rightshift */ | |
| 1478 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1479 | 16, /* bitsize */ | |
| 1480 | FALSE, /* pc_relative */ | |
| 1481 | 0, /* bitpos */ | |
| 1482 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1483 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1484 | "R_PPC64_DTPREL16_DS", /* name */ | |
| 1485 | FALSE, /* partial_inplace */ | |
| 1486 | 0, /* src_mask */ | |
| 1487 | 0xfffc, /* dst_mask */ | |
| 1488 | FALSE), /* pcrel_offset */ | |
| 1489 | ||
| 1490 | /* Like DTPREL16_DS, but no overflow. */ | |
| 1491 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
| 1492 | 0, /* rightshift */ | |
| 1493 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1494 | 16, /* bitsize */ | |
| 1495 | FALSE, /* pc_relative */ | |
| 1496 | 0, /* bitpos */ | |
| 1497 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1498 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1499 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
| 1500 | FALSE, /* partial_inplace */ | |
| 1501 | 0, /* src_mask */ | |
| 1502 | 0xfffc, /* dst_mask */ | |
| 1503 | FALSE), /* pcrel_offset */ | |
| 1504 | ||
| 1505 | /* Computes a tp-relative displacement, the difference between the value of | |
| 1506 | sym+add and the value of the thread pointer (r13). */ | |
| 1507 | HOWTO (R_PPC64_TPREL64, | |
| 1508 | 0, /* rightshift */ | |
| 1509 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1510 | 64, /* bitsize */ | |
| 1511 | FALSE, /* pc_relative */ | |
| 1512 | 0, /* bitpos */ | |
| 1513 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1514 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1515 | "R_PPC64_TPREL64", /* name */ | |
| 1516 | FALSE, /* partial_inplace */ | |
| 1517 | 0, /* src_mask */ | |
| 1518 | ONES (64), /* dst_mask */ | |
| 1519 | FALSE), /* pcrel_offset */ | |
| 1520 | ||
| 1521 | /* A 16 bit tprel reloc. */ | |
| 1522 | HOWTO (R_PPC64_TPREL16, | |
| 1523 | 0, /* rightshift */ | |
| 1524 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1525 | 16, /* bitsize */ | |
| 1526 | FALSE, /* pc_relative */ | |
| 1527 | 0, /* bitpos */ | |
| 1528 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1529 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1530 | "R_PPC64_TPREL16", /* name */ | |
| 1531 | FALSE, /* partial_inplace */ | |
| 1532 | 0, /* src_mask */ | |
| 1533 | 0xffff, /* dst_mask */ | |
| 1534 | FALSE), /* pcrel_offset */ | |
| 1535 | ||
| 1536 | /* Like TPREL16, but no overflow. */ | |
| 1537 | HOWTO (R_PPC64_TPREL16_LO, | |
| 1538 | 0, /* rightshift */ | |
| 1539 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1540 | 16, /* bitsize */ | |
| 1541 | FALSE, /* pc_relative */ | |
| 1542 | 0, /* bitpos */ | |
| 1543 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1544 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1545 | "R_PPC64_TPREL16_LO", /* name */ | |
| 1546 | FALSE, /* partial_inplace */ | |
| 1547 | 0, /* src_mask */ | |
| 1548 | 0xffff, /* dst_mask */ | |
| 1549 | FALSE), /* pcrel_offset */ | |
| 1550 | ||
| 1551 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
| 1552 | HOWTO (R_PPC64_TPREL16_HI, | |
| 1553 | 16, /* rightshift */ | |
| 1554 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1555 | 16, /* bitsize */ | |
| 1556 | FALSE, /* pc_relative */ | |
| 1557 | 0, /* bitpos */ | |
| f9c6b907 | 1558 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1559 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1560 | "R_PPC64_TPREL16_HI", /* name */ | |
| 1561 | FALSE, /* partial_inplace */ | |
| 1562 | 0, /* src_mask */ | |
| 1563 | 0xffff, /* dst_mask */ | |
| 1564 | FALSE), /* pcrel_offset */ | |
| 1565 | ||
| 1566 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
| 1567 | HOWTO (R_PPC64_TPREL16_HA, | |
| 1568 | 16, /* rightshift */ | |
| 1569 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1570 | 16, /* bitsize */ | |
| 1571 | FALSE, /* pc_relative */ | |
| 1572 | 0, /* bitpos */ | |
| f9c6b907 | 1573 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1574 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1575 | "R_PPC64_TPREL16_HA", /* name */ | |
| 1576 | FALSE, /* partial_inplace */ | |
| 1577 | 0, /* src_mask */ | |
| 1578 | 0xffff, /* dst_mask */ | |
| 1579 | FALSE), /* pcrel_offset */ | |
| 1580 | ||
| 1581 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
| 1582 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
| 1583 | 32, /* rightshift */ | |
| 1584 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1585 | 16, /* bitsize */ | |
| 1586 | FALSE, /* pc_relative */ | |
| 1587 | 0, /* bitpos */ | |
| 1588 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1589 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1590 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
| 1591 | FALSE, /* partial_inplace */ | |
| 1592 | 0, /* src_mask */ | |
| 1593 | 0xffff, /* dst_mask */ | |
| 1594 | FALSE), /* pcrel_offset */ | |
| 1595 | ||
| 1596 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1597 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
| 1598 | 32, /* rightshift */ | |
| 1599 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1600 | 16, /* bitsize */ | |
| 1601 | FALSE, /* pc_relative */ | |
| 1602 | 0, /* bitpos */ | |
| 1603 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1604 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1605 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
| 1606 | FALSE, /* partial_inplace */ | |
| 1607 | 0, /* src_mask */ | |
| 1608 | 0xffff, /* dst_mask */ | |
| 1609 | FALSE), /* pcrel_offset */ | |
| 1610 | ||
| 1611 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1612 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
| 1613 | 48, /* rightshift */ | |
| 1614 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1615 | 16, /* bitsize */ | |
| 1616 | FALSE, /* pc_relative */ | |
| 1617 | 0, /* bitpos */ | |
| 1618 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1619 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1620 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
| 1621 | FALSE, /* partial_inplace */ | |
| 1622 | 0, /* src_mask */ | |
| 1623 | 0xffff, /* dst_mask */ | |
| 1624 | FALSE), /* pcrel_offset */ | |
| 1625 | ||
| 1626 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1627 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
| 1628 | 48, /* rightshift */ | |
| 1629 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1630 | 16, /* bitsize */ | |
| 1631 | FALSE, /* pc_relative */ | |
| 1632 | 0, /* bitpos */ | |
| 1633 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1634 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1635 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
| 1636 | FALSE, /* partial_inplace */ | |
| 1637 | 0, /* src_mask */ | |
| 1638 | 0xffff, /* dst_mask */ | |
| 1639 | FALSE), /* pcrel_offset */ | |
| 1640 | ||
| 1641 | /* Like TPREL16, but for insns with a DS field. */ | |
| 1642 | HOWTO (R_PPC64_TPREL16_DS, | |
| 1643 | 0, /* rightshift */ | |
| 1644 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1645 | 16, /* bitsize */ | |
| 1646 | FALSE, /* pc_relative */ | |
| 1647 | 0, /* bitpos */ | |
| 1648 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1649 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1650 | "R_PPC64_TPREL16_DS", /* name */ | |
| 1651 | FALSE, /* partial_inplace */ | |
| 1652 | 0, /* src_mask */ | |
| 1653 | 0xfffc, /* dst_mask */ | |
| 1654 | FALSE), /* pcrel_offset */ | |
| 1655 | ||
| 1656 | /* Like TPREL16_DS, but no overflow. */ | |
| 1657 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
| 1658 | 0, /* rightshift */ | |
| 1659 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1660 | 16, /* bitsize */ | |
| 1661 | FALSE, /* pc_relative */ | |
| 1662 | 0, /* bitpos */ | |
| 1663 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1664 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1665 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
| 1666 | FALSE, /* partial_inplace */ | |
| 1667 | 0, /* src_mask */ | |
| 1668 | 0xfffc, /* dst_mask */ | |
| 1669 | FALSE), /* pcrel_offset */ | |
| 1670 | ||
| 1671 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
| 1672 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
| 1673 | to the first entry relative to the TOC base (r2). */ | |
| 1674 | HOWTO (R_PPC64_GOT_TLSGD16, | |
| 1675 | 0, /* rightshift */ | |
| 1676 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1677 | 16, /* bitsize */ | |
| 1678 | FALSE, /* pc_relative */ | |
| 1679 | 0, /* bitpos */ | |
| 1680 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1681 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1682 | "R_PPC64_GOT_TLSGD16", /* name */ | |
| b34976b6 | 1683 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1684 | 0, /* src_mask */ |
| 1685 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1686 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1687 | |
| 411e1bfb AM |
1688 | /* Like GOT_TLSGD16, but no overflow. */ |
| 1689 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
| 5bd4f169 AM |
1690 | 0, /* rightshift */ |
| 1691 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1692 | 16, /* bitsize */ | |
| b34976b6 | 1693 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1694 | 0, /* bitpos */ |
| 1695 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1696 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1697 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
| b34976b6 | 1698 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1699 | 0, /* src_mask */ |
| 1700 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1701 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1702 | |
| 411e1bfb AM |
1703 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
| 1704 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
| 5bd4f169 AM |
1705 | 16, /* rightshift */ |
| 1706 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1707 | 16, /* bitsize */ | |
| b34976b6 | 1708 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1709 | 0, /* bitpos */ |
| f9c6b907 | 1710 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1711 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1712 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
| b34976b6 | 1713 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1714 | 0, /* src_mask */ |
| 1715 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1716 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1717 | |
| 411e1bfb AM |
1718 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
| 1719 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
| 5bd4f169 AM |
1720 | 16, /* rightshift */ |
| 1721 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1722 | 16, /* bitsize */ | |
| b34976b6 | 1723 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1724 | 0, /* bitpos */ |
| f9c6b907 | 1725 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1726 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1727 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
| b34976b6 | 1728 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1729 | 0, /* src_mask */ |
| 1730 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1731 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1732 | |
| 411e1bfb AM |
1733 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
| 1734 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
| 1735 | first entry relative to the TOC base (r2). */ | |
| 1736 | HOWTO (R_PPC64_GOT_TLSLD16, | |
| 5bd4f169 AM |
1737 | 0, /* rightshift */ |
| 1738 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1739 | 16, /* bitsize */ | |
| b34976b6 | 1740 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1741 | 0, /* bitpos */ |
| 411e1bfb AM |
1742 | complain_overflow_signed, /* complain_on_overflow */ |
| 1743 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1744 | "R_PPC64_GOT_TLSLD16", /* name */ | |
| b34976b6 | 1745 | FALSE, /* partial_inplace */ |
| d006db6c | 1746 | 0, /* src_mask */ |
| 411e1bfb | 1747 | 0xffff, /* dst_mask */ |
| b34976b6 | 1748 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1749 | |
| 411e1bfb AM |
1750 | /* Like GOT_TLSLD16, but no overflow. */ |
| 1751 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
| 5bd4f169 AM |
1752 | 0, /* rightshift */ |
| 1753 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1754 | 16, /* bitsize */ | |
| b34976b6 | 1755 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1756 | 0, /* bitpos */ |
| 411e1bfb AM |
1757 | complain_overflow_dont, /* complain_on_overflow */ |
| 1758 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1759 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
| b34976b6 | 1760 | FALSE, /* partial_inplace */ |
| d006db6c | 1761 | 0, /* src_mask */ |
| 411e1bfb | 1762 | 0xffff, /* dst_mask */ |
| b34976b6 | 1763 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1764 | |
| 411e1bfb AM |
1765 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
| 1766 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
| 1767 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1768 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1769 | 16, /* bitsize */ | |
| b34976b6 | 1770 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1771 | 0, /* bitpos */ |
| f9c6b907 | 1772 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1773 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1774 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
| b34976b6 | 1775 | FALSE, /* partial_inplace */ |
| d006db6c | 1776 | 0, /* src_mask */ |
| 411e1bfb | 1777 | 0xffff, /* dst_mask */ |
| b34976b6 | 1778 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1779 | |
| 411e1bfb AM |
1780 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
| 1781 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
| 1782 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1783 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1784 | 16, /* bitsize */ | |
| b34976b6 | 1785 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1786 | 0, /* bitpos */ |
| f9c6b907 | 1787 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1788 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1789 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
| b34976b6 | 1790 | FALSE, /* partial_inplace */ |
| d006db6c | 1791 | 0, /* src_mask */ |
| 411e1bfb | 1792 | 0xffff, /* dst_mask */ |
| b34976b6 | 1793 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1794 | |
| 411e1bfb AM |
1795 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
| 1796 | the offset to the entry relative to the TOC base (r2). */ | |
| 1797 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
| 5bd4f169 AM |
1798 | 0, /* rightshift */ |
| 1799 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1800 | 16, /* bitsize */ | |
| b34976b6 | 1801 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1802 | 0, /* bitpos */ |
| 411e1bfb | 1803 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1804 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1805 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
| b34976b6 | 1806 | FALSE, /* partial_inplace */ |
| d006db6c | 1807 | 0, /* src_mask */ |
| 5bd4f169 | 1808 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1809 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1810 | |
| 411e1bfb AM |
1811 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
| 1812 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
| 5bd4f169 | 1813 | 0, /* rightshift */ |
| c061c2d8 AM |
1814 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1815 | 16, /* bitsize */ | |
| b34976b6 | 1816 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1817 | 0, /* bitpos */ |
| 411e1bfb AM |
1818 | complain_overflow_dont, /* complain_on_overflow */ |
| 1819 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1820 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
| b34976b6 | 1821 | FALSE, /* partial_inplace */ |
| d006db6c | 1822 | 0, /* src_mask */ |
| c061c2d8 | 1823 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1824 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1825 | |
| 411e1bfb AM |
1826 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1827 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
| 1828 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1829 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1830 | 16, /* bitsize */ | |
| b34976b6 | 1831 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1832 | 0, /* bitpos */ |
| f9c6b907 | 1833 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1834 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1835 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
| b34976b6 | 1836 | FALSE, /* partial_inplace */ |
| d006db6c | 1837 | 0, /* src_mask */ |
| 411e1bfb | 1838 | 0xffff, /* dst_mask */ |
| b34976b6 | 1839 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1840 | |
| 411e1bfb AM |
1841 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
| 1842 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
| 1843 | 16, /* rightshift */ | |
| 1844 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1845 | 16, /* bitsize */ | |
| 1846 | FALSE, /* pc_relative */ | |
| 1847 | 0, /* bitpos */ | |
| f9c6b907 | 1848 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1849 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1850 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
| 1851 | FALSE, /* partial_inplace */ | |
| 1852 | 0, /* src_mask */ | |
| 1853 | 0xffff, /* dst_mask */ | |
| 1854 | FALSE), /* pcrel_offset */ | |
| 1855 | ||
| 1856 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
| 1857 | offset to the entry relative to the TOC base (r2). */ | |
| 1858 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
| 5bd4f169 AM |
1859 | 0, /* rightshift */ |
| 1860 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1861 | 16, /* bitsize */ | |
| b34976b6 | 1862 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1863 | 0, /* bitpos */ |
| 1864 | complain_overflow_signed, /* complain_on_overflow */ | |
| 411e1bfb AM |
1865 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1866 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
| b34976b6 | 1867 | FALSE, /* partial_inplace */ |
| d006db6c | 1868 | 0, /* src_mask */ |
| ad8e1ba5 | 1869 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1870 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1871 | |
| 411e1bfb AM |
1872 | /* Like GOT_TPREL16_DS, but no overflow. */ |
| 1873 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
| 5bd4f169 AM |
1874 | 0, /* rightshift */ |
| 1875 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1876 | 16, /* bitsize */ | |
| b34976b6 | 1877 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1878 | 0, /* bitpos */ |
| 1879 | complain_overflow_dont, /* complain_on_overflow */ | |
| 411e1bfb AM |
1880 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1881 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
| b34976b6 | 1882 | FALSE, /* partial_inplace */ |
| d006db6c | 1883 | 0, /* src_mask */ |
| ad8e1ba5 | 1884 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1885 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1886 | |
| 411e1bfb AM |
1887 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1888 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
| 1889 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1890 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1891 | 16, /* bitsize */ | |
| b34976b6 | 1892 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1893 | 0, /* bitpos */ |
| f9c6b907 | 1894 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1895 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1896 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
| b34976b6 | 1897 | FALSE, /* partial_inplace */ |
| d006db6c | 1898 | 0, /* src_mask */ |
| 411e1bfb | 1899 | 0xffff, /* dst_mask */ |
| b34976b6 | 1900 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1901 | |
| 411e1bfb AM |
1902 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
| 1903 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
| 1904 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1905 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1906 | 16, /* bitsize */ | |
| b34976b6 | 1907 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1908 | 0, /* bitpos */ |
| f9c6b907 | 1909 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1910 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1911 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
| b34976b6 | 1912 | FALSE, /* partial_inplace */ |
| d006db6c | 1913 | 0, /* src_mask */ |
| 411e1bfb | 1914 | 0xffff, /* dst_mask */ |
| b34976b6 | 1915 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1916 | |
| 25f23106 AM |
1917 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
| 1918 | 0, /* rightshift */ | |
| 1919 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1920 | 0, /* bitsize */ | |
| 1921 | FALSE, /* pc_relative */ | |
| 1922 | 0, /* bitpos */ | |
| 1923 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1924 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1925 | "R_PPC64_JMP_IREL", /* name */ | |
| 1926 | FALSE, /* partial_inplace */ | |
| 1927 | 0, /* src_mask */ | |
| 1928 | 0, /* dst_mask */ | |
| 1929 | FALSE), /* pcrel_offset */ | |
| 1930 | ||
| e054468f AM |
1931 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
| 1932 | 0, /* rightshift */ | |
| 1933 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1934 | 64, /* bitsize */ | |
| 1935 | FALSE, /* pc_relative */ | |
| 1936 | 0, /* bitpos */ | |
| 1937 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1938 | bfd_elf_generic_reloc, /* special_function */ | |
| 1939 | "R_PPC64_IRELATIVE", /* name */ | |
| 1940 | FALSE, /* partial_inplace */ | |
| 1941 | 0, /* src_mask */ | |
| 1942 | ONES (64), /* dst_mask */ | |
| 1943 | FALSE), /* pcrel_offset */ | |
| 1944 | ||
| 25f23106 AM |
1945 | /* A 16 bit relative relocation. */ |
| 1946 | HOWTO (R_PPC64_REL16, /* type */ | |
| 1947 | 0, /* rightshift */ | |
| 1948 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1949 | 16, /* bitsize */ | |
| 1950 | TRUE, /* pc_relative */ | |
| 1951 | 0, /* bitpos */ | |
| b80eed39 | 1952 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
1953 | bfd_elf_generic_reloc, /* special_function */ |
| 1954 | "R_PPC64_REL16", /* name */ | |
| 1955 | FALSE, /* partial_inplace */ | |
| 1956 | 0, /* src_mask */ | |
| 1957 | 0xffff, /* dst_mask */ | |
| 1958 | TRUE), /* pcrel_offset */ | |
| 1959 | ||
| 1960 | /* A 16 bit relative relocation without overflow. */ | |
| 1961 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
| 1962 | 0, /* rightshift */ | |
| 1963 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1964 | 16, /* bitsize */ | |
| 1965 | TRUE, /* pc_relative */ | |
| 1966 | 0, /* bitpos */ | |
| 1967 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1968 | bfd_elf_generic_reloc, /* special_function */ | |
| 1969 | "R_PPC64_REL16_LO", /* name */ | |
| 1970 | FALSE, /* partial_inplace */ | |
| 1971 | 0, /* src_mask */ | |
| 1972 | 0xffff, /* dst_mask */ | |
| 1973 | TRUE), /* pcrel_offset */ | |
| 1974 | ||
| 1975 | /* The high order 16 bits of a relative address. */ | |
| 1976 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
| 1977 | 16, /* rightshift */ | |
| 1978 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1979 | 16, /* bitsize */ | |
| 1980 | TRUE, /* pc_relative */ | |
| 1981 | 0, /* bitpos */ | |
| f9c6b907 | 1982 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
1983 | bfd_elf_generic_reloc, /* special_function */ |
| 1984 | "R_PPC64_REL16_HI", /* name */ | |
| 1985 | FALSE, /* partial_inplace */ | |
| 1986 | 0, /* src_mask */ | |
| 1987 | 0xffff, /* dst_mask */ | |
| 1988 | TRUE), /* pcrel_offset */ | |
| 1989 | ||
| 1990 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
| 1991 | the low 16 bits, treated as a signed number, is negative. */ | |
| 1992 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
| 1993 | 16, /* rightshift */ | |
| 1994 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1995 | 16, /* bitsize */ | |
| 1996 | TRUE, /* pc_relative */ | |
| 1997 | 0, /* bitpos */ | |
| f9c6b907 | 1998 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
1999 | ppc64_elf_ha_reloc, /* special_function */ |
| 2000 | "R_PPC64_REL16_HA", /* name */ | |
| 2001 | FALSE, /* partial_inplace */ | |
| 2002 | 0, /* src_mask */ | |
| 2003 | 0xffff, /* dst_mask */ | |
| 2004 | TRUE), /* pcrel_offset */ | |
| 2005 | ||
| f9c6b907 AM |
2006 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
| 2007 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
| 2008 | 16, /* rightshift */ | |
| 2009 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2010 | 16, /* bitsize */ | |
| 2011 | FALSE, /* pc_relative */ | |
| 2012 | 0, /* bitpos */ | |
| 2013 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2014 | bfd_elf_generic_reloc, /* special_function */ | |
| 2015 | "R_PPC64_ADDR16_HIGH", /* name */ | |
| 2016 | FALSE, /* partial_inplace */ | |
| 2017 | 0, /* src_mask */ | |
| 2018 | 0xffff, /* dst_mask */ | |
| 2019 | FALSE), /* pcrel_offset */ | |
| 2020 | ||
| 2021 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
| 2022 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
| 2023 | 16, /* rightshift */ | |
| 2024 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2025 | 16, /* bitsize */ | |
| 2026 | FALSE, /* pc_relative */ | |
| 2027 | 0, /* bitpos */ | |
| 2028 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2029 | ppc64_elf_ha_reloc, /* special_function */ | |
| 2030 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
| 2031 | FALSE, /* partial_inplace */ | |
| 2032 | 0, /* src_mask */ | |
| 2033 | 0xffff, /* dst_mask */ | |
| 2034 | FALSE), /* pcrel_offset */ | |
| 2035 | ||
| 2036 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
| 2037 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
| 2038 | 16, /* rightshift */ | |
| 2039 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2040 | 16, /* bitsize */ | |
| 2041 | FALSE, /* pc_relative */ | |
| 2042 | 0, /* bitpos */ | |
| 2043 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2044 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2045 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
| 2046 | FALSE, /* partial_inplace */ | |
| 2047 | 0, /* src_mask */ | |
| 2048 | 0xffff, /* dst_mask */ | |
| 2049 | FALSE), /* pcrel_offset */ | |
| 2050 | ||
| 2051 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
| 2052 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
| 2053 | 16, /* rightshift */ | |
| 2054 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2055 | 16, /* bitsize */ | |
| 2056 | FALSE, /* pc_relative */ | |
| 2057 | 0, /* bitpos */ | |
| 2058 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2059 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2060 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
| 2061 | FALSE, /* partial_inplace */ | |
| 2062 | 0, /* src_mask */ | |
| 2063 | 0xffff, /* dst_mask */ | |
| 2064 | FALSE), /* pcrel_offset */ | |
| 2065 | ||
| 2066 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
| 2067 | HOWTO (R_PPC64_TPREL16_HIGH, | |
| 2068 | 16, /* rightshift */ | |
| 2069 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2070 | 16, /* bitsize */ | |
| 2071 | FALSE, /* pc_relative */ | |
| 2072 | 0, /* bitpos */ | |
| 2073 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2074 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2075 | "R_PPC64_TPREL16_HIGH", /* name */ | |
| 2076 | FALSE, /* partial_inplace */ | |
| 2077 | 0, /* src_mask */ | |
| 2078 | 0xffff, /* dst_mask */ | |
| 2079 | FALSE), /* pcrel_offset */ | |
| 2080 | ||
| 2081 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
| 2082 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
| 2083 | 16, /* rightshift */ | |
| 2084 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2085 | 16, /* bitsize */ | |
| 2086 | FALSE, /* pc_relative */ | |
| 2087 | 0, /* bitpos */ | |
| 2088 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2089 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2090 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
| 2091 | FALSE, /* partial_inplace */ | |
| 2092 | 0, /* src_mask */ | |
| 2093 | 0xffff, /* dst_mask */ | |
| 2094 | FALSE), /* pcrel_offset */ | |
| 2095 | ||
| 45965137 AM |
2096 | /* Like ADDR64, but use local entry point of function. */ |
| 2097 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
| 2098 | 0, /* rightshift */ | |
| 2099 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 2100 | 64, /* bitsize */ | |
| 2101 | FALSE, /* pc_relative */ | |
| 2102 | 0, /* bitpos */ | |
| 2103 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2104 | bfd_elf_generic_reloc, /* special_function */ | |
| 2105 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
| 2106 | FALSE, /* partial_inplace */ | |
| 2107 | 0, /* src_mask */ | |
| 2108 | ONES (64), /* dst_mask */ | |
| 2109 | FALSE), /* pcrel_offset */ | |
| 2110 | ||
| 5bd4f169 AM |
2111 | /* GNU extension to record C++ vtable hierarchy. */ |
| 2112 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
| 2113 | 0, /* rightshift */ | |
| 2114 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2115 | 0, /* bitsize */ | |
| b34976b6 | 2116 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
2117 | 0, /* bitpos */ |
| 2118 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2119 | NULL, /* special_function */ | |
| 2120 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
| b34976b6 | 2121 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
2122 | 0, /* src_mask */ |
| 2123 | 0, /* dst_mask */ | |
| b34976b6 | 2124 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
2125 | |
| 2126 | /* GNU extension to record C++ vtable member usage. */ | |
| 2127 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
| 2128 | 0, /* rightshift */ | |
| 2129 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2130 | 0, /* bitsize */ | |
| b34976b6 | 2131 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
2132 | 0, /* bitpos */ |
| 2133 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2134 | NULL, /* special_function */ | |
| 2135 | "R_PPC64_GNU_VTENTRY", /* name */ | |
| b34976b6 | 2136 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
2137 | 0, /* src_mask */ |
| 2138 | 0, /* dst_mask */ | |
| b34976b6 | 2139 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
2140 | }; |
| 2141 | ||
| 2142 | \f | |
| 2143 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
| 2144 | be done. */ | |
| 2145 | ||
| 2146 | static void | |
| 4ce794b7 | 2147 | ppc_howto_init (void) |
| 5bd4f169 AM |
2148 | { |
| 2149 | unsigned int i, type; | |
| 2150 | ||
| 2151 | for (i = 0; | |
| 2152 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
| 2153 | i++) | |
| 2154 | { | |
| 2155 | type = ppc64_elf_howto_raw[i].type; | |
| 2156 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
| 2157 | / sizeof (ppc64_elf_howto_table[0]))); | |
| 2158 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
| 2159 | } | |
| 2160 | } | |
| 2161 | ||
| 2162 | static reloc_howto_type * | |
| 4ce794b7 AM |
2163 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 2164 | bfd_reloc_code_real_type code) | |
| 5bd4f169 | 2165 | { |
| 411e1bfb | 2166 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
| 5bd4f169 AM |
2167 | |
| 2168 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
| 2169 | /* Initialize howto table if needed. */ | |
| 2170 | ppc_howto_init (); | |
| 2171 | ||
| 4ce794b7 | 2172 | switch (code) |
| 5bd4f169 AM |
2173 | { |
| 2174 | default: | |
| 4ce794b7 | 2175 | return NULL; |
| 5bd4f169 | 2176 | |
| 411e1bfb AM |
2177 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
| 2178 | break; | |
| 2179 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
| 2180 | break; | |
| 2181 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
| 2182 | break; | |
| 2183 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
| 2184 | break; | |
| 2185 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
| 2186 | break; | |
| 2187 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
| 2188 | break; | |
| f9c6b907 AM |
2189 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
| 2190 | break; | |
| 411e1bfb | 2191 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
| 5bd4f169 | 2192 | break; |
| f9c6b907 AM |
2193 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
| 2194 | break; | |
| 411e1bfb | 2195 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
| 5bd4f169 | 2196 | break; |
| 411e1bfb | 2197 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
| 5bd4f169 | 2198 | break; |
| 411e1bfb | 2199 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
| 5bd4f169 | 2200 | break; |
| 411e1bfb | 2201 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
| 5bd4f169 | 2202 | break; |
| 411e1bfb | 2203 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
| 5bd4f169 | 2204 | break; |
| 411e1bfb | 2205 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
| 5bd4f169 | 2206 | break; |
| 411e1bfb | 2207 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
| 5bd4f169 | 2208 | break; |
| 411e1bfb | 2209 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
| 5bd4f169 | 2210 | break; |
| 411e1bfb | 2211 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
| 5bd4f169 | 2212 | break; |
| 411e1bfb | 2213 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
| 5bd4f169 | 2214 | break; |
| 411e1bfb | 2215 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
| 5bd4f169 | 2216 | break; |
| 411e1bfb | 2217 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
| 5bd4f169 | 2218 | break; |
| 411e1bfb | 2219 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
| 5bd4f169 | 2220 | break; |
| 411e1bfb | 2221 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
| 5bd4f169 | 2222 | break; |
| 411e1bfb | 2223 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
| 5bd4f169 | 2224 | break; |
| 411e1bfb | 2225 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
| 5bd4f169 | 2226 | break; |
| 411e1bfb | 2227 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
| 5bd4f169 | 2228 | break; |
| 411e1bfb | 2229 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
| 5bd4f169 | 2230 | break; |
| 411e1bfb | 2231 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
| 5bd4f169 | 2232 | break; |
| 411e1bfb | 2233 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
| 5bd4f169 | 2234 | break; |
| 411e1bfb | 2235 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
| 5bd4f169 | 2236 | break; |
| 411e1bfb | 2237 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
| 5bd4f169 | 2238 | break; |
| 411e1bfb | 2239 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
| 5bd4f169 | 2240 | break; |
| 411e1bfb | 2241 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2242 | break; |
| 411e1bfb | 2243 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2244 | break; |
| 411e1bfb | 2245 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
| 5bd4f169 | 2246 | break; |
| 411e1bfb | 2247 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
| 5bd4f169 | 2248 | break; |
| 411e1bfb | 2249 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
| 5bd4f169 | 2250 | break; |
| 411e1bfb | 2251 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
| 5bd4f169 | 2252 | break; |
| 411e1bfb | 2253 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
| 5bd4f169 | 2254 | break; |
| 411e1bfb | 2255 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
| 5bd4f169 | 2256 | break; |
| 411e1bfb | 2257 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
| 5bd4f169 | 2258 | break; |
| 411e1bfb | 2259 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
| 5bd4f169 | 2260 | break; |
| 411e1bfb | 2261 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
| 5bd4f169 | 2262 | break; |
| 411e1bfb | 2263 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
| 5bd4f169 | 2264 | break; |
| 411e1bfb | 2265 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
| 5bd4f169 | 2266 | break; |
| 411e1bfb | 2267 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
| 5bd4f169 | 2268 | break; |
| 411e1bfb | 2269 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
| 5bd4f169 | 2270 | break; |
| 411e1bfb | 2271 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
| 5bd4f169 | 2272 | break; |
| 411e1bfb | 2273 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
| 5bd4f169 | 2274 | break; |
| 411e1bfb | 2275 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
| 5bd4f169 | 2276 | break; |
| 411e1bfb | 2277 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
| 5bd4f169 | 2278 | break; |
| 411e1bfb | 2279 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
| 5bd4f169 | 2280 | break; |
| 411e1bfb | 2281 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
| 5bd4f169 | 2282 | break; |
| 411e1bfb | 2283 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
| 5bd4f169 | 2284 | break; |
| 411e1bfb | 2285 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
| 5bd4f169 | 2286 | break; |
| 411e1bfb | 2287 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
| 5bd4f169 | 2288 | break; |
| 411e1bfb | 2289 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
| 5bd4f169 | 2290 | break; |
| 411e1bfb | 2291 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
| 5bd4f169 | 2292 | break; |
| 411e1bfb | 2293 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
| 5bd4f169 | 2294 | break; |
| 411e1bfb | 2295 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
| 5bd4f169 | 2296 | break; |
| 411e1bfb | 2297 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
| 5bd4f169 | 2298 | break; |
| 411e1bfb | 2299 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
| 5bd4f169 | 2300 | break; |
| 727fc41e AM |
2301 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
| 2302 | break; | |
| 2303 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
| 2304 | break; | |
| 411e1bfb | 2305 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
| 5bd4f169 | 2306 | break; |
| 411e1bfb | 2307 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
| 5bd4f169 | 2308 | break; |
| 411e1bfb | 2309 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
| 5bd4f169 | 2310 | break; |
| 411e1bfb | 2311 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
| 5bd4f169 | 2312 | break; |
| f9c6b907 AM |
2313 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
| 2314 | break; | |
| 411e1bfb | 2315 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
| 5bd4f169 | 2316 | break; |
| f9c6b907 AM |
2317 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
| 2318 | break; | |
| 411e1bfb | 2319 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
| 5bd4f169 | 2320 | break; |
| 411e1bfb AM |
2321 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
| 2322 | break; | |
| 2323 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
| 2324 | break; | |
| 2325 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
| 2326 | break; | |
| f9c6b907 AM |
2327 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
| 2328 | break; | |
| 411e1bfb AM |
2329 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
| 2330 | break; | |
| f9c6b907 AM |
2331 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
| 2332 | break; | |
| 411e1bfb AM |
2333 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
| 2334 | break; | |
| 2335 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
| 2336 | break; | |
| 2337 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
| 2338 | break; | |
| 2339 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
| 2340 | break; | |
| 2341 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
| 2342 | break; | |
| 2343 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
| 2344 | break; | |
| 2345 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
| 2346 | break; | |
| 2347 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
| 2348 | break; | |
| 2349 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
| 2350 | break; | |
| 2351 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
| 2352 | break; | |
| 2353 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
| 2354 | break; | |
| 2355 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
| 2356 | break; | |
| 2357 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
| 2358 | break; | |
| 2359 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
| 2360 | break; | |
| 2361 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
| 2362 | break; | |
| 2363 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
| 2364 | break; | |
| 2365 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
| 2366 | break; | |
| 2367 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
| 2368 | break; | |
| 2369 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
| 2370 | break; | |
| 2371 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
| 2372 | break; | |
| 2373 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
| 2374 | break; | |
| 2375 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
| 2376 | break; | |
| 2377 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
| 2378 | break; | |
| 2379 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
| 2380 | break; | |
| 2381 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
| 2382 | break; | |
| 2383 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
| 2384 | break; | |
| 2385 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
| 2386 | break; | |
| 2387 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
| 2388 | break; | |
| 2389 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
| 2390 | break; | |
| 25f23106 AM |
2391 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
| 2392 | break; | |
| 2393 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
| 2394 | break; | |
| 2395 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
| 2396 | break; | |
| 2397 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
| 2398 | break; | |
| 45965137 AM |
2399 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
| 2400 | break; | |
| 411e1bfb AM |
2401 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
| 2402 | break; | |
| 2403 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
| 5bd4f169 AM |
2404 | break; |
| 2405 | } | |
| 2406 | ||
| 4ce794b7 | 2407 | return ppc64_elf_howto_table[r]; |
| 5bd4f169 AM |
2408 | }; |
| 2409 | ||
| 157090f7 AM |
2410 | static reloc_howto_type * |
| 2411 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
| 2412 | const char *r_name) | |
| 2413 | { | |
| 2414 | unsigned int i; | |
| 2415 | ||
| 2416 | for (i = 0; | |
| 2417 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
| 2418 | i++) | |
| 2419 | if (ppc64_elf_howto_raw[i].name != NULL | |
| 2420 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
| 2421 | return &ppc64_elf_howto_raw[i]; | |
| 2422 | ||
| 2423 | return NULL; | |
| 2424 | } | |
| 2425 | ||
| 5bd4f169 AM |
2426 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
| 2427 | ||
| 2428 | static void | |
| 4ce794b7 AM |
2429 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
| 2430 | Elf_Internal_Rela *dst) | |
| 5bd4f169 | 2431 | { |
| 65f38f15 AM |
2432 | unsigned int type; |
| 2433 | ||
| ef60b7ff | 2434 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 2435 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
2436 | ppc_howto_init (); |
| 2437 | ||
| 65f38f15 | 2438 | type = ELF64_R_TYPE (dst->r_info); |
| d0fb9a8d JJ |
2439 | if (type >= (sizeof (ppc64_elf_howto_table) |
| 2440 | / sizeof (ppc64_elf_howto_table[0]))) | |
| 2441 | { | |
| 2442 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
| 3ec2b351 NC |
2443 | abfd, (int) type); |
| 2444 | type = R_PPC64_NONE; | |
| d0fb9a8d | 2445 | } |
| 65f38f15 | 2446 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
| 5bd4f169 AM |
2447 | } |
| 2448 | ||
| 04c9666a | 2449 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
| 5bd4f169 AM |
2450 | |
| 2451 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2452 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2453 | void *data, asection *input_section, | |
| 2454 | bfd *output_bfd, char **error_message) | |
| 5bd4f169 | 2455 | { |
| 805fc799 AM |
2456 | /* If this is a relocatable link (output_bfd test tells us), just |
| 2457 | call the generic function. Any adjustment will be done at final | |
| 2458 | link time. */ | |
| 2459 | if (output_bfd != NULL) | |
| cedb70c5 | 2460 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2461 | input_section, output_bfd, error_message); |
| 2462 | ||
| 2463 | /* Adjust the addend for sign extension of the low 16 bits. | |
| 2464 | We won't actually be using the low 16 bits, so trashing them | |
| 2465 | doesn't matter. */ | |
| 2466 | reloc_entry->addend += 0x8000; | |
| 2467 | return bfd_reloc_continue; | |
| 2468 | } | |
| 5bd4f169 | 2469 | |
| 2441e016 AM |
2470 | static bfd_reloc_status_type |
| 2471 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
| 2472 | void *data, asection *input_section, | |
| 2473 | bfd *output_bfd, char **error_message) | |
| 2474 | { | |
| 2475 | if (output_bfd != NULL) | |
| 2476 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
| 2477 | input_section, output_bfd, error_message); | |
| 2478 | ||
| 699733f6 AM |
2479 | if (strcmp (symbol->section->name, ".opd") == 0 |
| 2480 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
| 2441e016 AM |
2481 | { |
| 2482 | bfd_vma dest = opd_entry_value (symbol->section, | |
| 2483 | symbol->value + reloc_entry->addend, | |
| aef36ac1 | 2484 | NULL, NULL, FALSE); |
| 2441e016 AM |
2485 | if (dest != (bfd_vma) -1) |
| 2486 | reloc_entry->addend = dest - (symbol->value | |
| 2487 | + symbol->section->output_section->vma | |
| 2488 | + symbol->section->output_offset); | |
| 2489 | } | |
| 2490 | return bfd_reloc_continue; | |
| 2491 | } | |
| 2492 | ||
| 805fc799 | 2493 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2494 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2495 | void *data, asection *input_section, | |
| 2496 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2497 | { |
| 2498 | long insn; | |
| 04c9666a | 2499 | enum elf_ppc64_reloc_type r_type; |
| 805fc799 | 2500 | bfd_size_type octets; |
| 794e51c0 AM |
2501 | /* Assume 'at' branch hints. */ |
| 2502 | bfd_boolean is_isa_v2 = TRUE; | |
| 805fc799 AM |
2503 | |
| 2504 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2505 | call the generic function. Any adjustment will be done at final | |
| 2506 | link time. */ | |
| 5bd4f169 | 2507 | if (output_bfd != NULL) |
| cedb70c5 | 2508 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2509 | input_section, output_bfd, error_message); |
| 2510 | ||
| 2511 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2512 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
| 2513 | insn &= ~(0x01 << 21); | |
| 4ce794b7 | 2514 | r_type = reloc_entry->howto->type; |
| 805fc799 AM |
2515 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
| 2516 | || r_type == R_PPC64_REL14_BRTAKEN) | |
| cedb70c5 | 2517 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 805fc799 | 2518 | |
| 794e51c0 | 2519 | if (is_isa_v2) |
| 5bd4f169 | 2520 | { |
| 805fc799 AM |
2521 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 2522 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 2523 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 2524 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 2525 | insn |= 0x02 << 21; | |
| 2526 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 2527 | insn |= 0x08 << 21; | |
| 2528 | else | |
| 2441e016 | 2529 | goto out; |
| 5bd4f169 | 2530 | } |
| 805fc799 AM |
2531 | else |
| 2532 | { | |
| 2533 | bfd_vma target = 0; | |
| 2534 | bfd_vma from; | |
| 5bd4f169 | 2535 | |
| 805fc799 AM |
2536 | if (!bfd_is_com_section (symbol->section)) |
| 2537 | target = symbol->value; | |
| 2538 | target += symbol->section->output_section->vma; | |
| 2539 | target += symbol->section->output_offset; | |
| 2540 | target += reloc_entry->addend; | |
| 5bd4f169 | 2541 | |
| 805fc799 AM |
2542 | from = (reloc_entry->address |
| 2543 | + input_section->output_offset | |
| 2544 | + input_section->output_section->vma); | |
| 5bd4f169 | 2545 | |
| 805fc799 AM |
2546 | /* Invert 'y' bit if not the default. */ |
| 2547 | if ((bfd_signed_vma) (target - from) < 0) | |
| 2548 | insn ^= 0x01 << 21; | |
| 2549 | } | |
| 4ce794b7 | 2550 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
| 2441e016 AM |
2551 | out: |
| 2552 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
| 2553 | input_section, output_bfd, error_message); | |
| 805fc799 | 2554 | } |
| 5bd4f169 | 2555 | |
| 805fc799 | 2556 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2557 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2558 | void *data, asection *input_section, | |
| 2559 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2560 | { |
| 2561 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2562 | call the generic function. Any adjustment will be done at final | |
| 2563 | link time. */ | |
| 2564 | if (output_bfd != NULL) | |
| cedb70c5 | 2565 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 | 2566 | input_section, output_bfd, error_message); |
| 5bd4f169 | 2567 | |
| 805fc799 AM |
2568 | /* Subtract the symbol section base address. */ |
| 2569 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 5bd4f169 AM |
2570 | return bfd_reloc_continue; |
| 2571 | } | |
| 2572 | ||
| 805fc799 | 2573 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2574 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2575 | void *data, asection *input_section, | |
| 2576 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2577 | { |
| 2578 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2579 | call the generic function. Any adjustment will be done at final | |
| 2580 | link time. */ | |
| 2581 | if (output_bfd != NULL) | |
| cedb70c5 | 2582 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2583 | input_section, output_bfd, error_message); |
| 2584 | ||
| 2585 | /* Subtract the symbol section base address. */ | |
| 2586 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 2587 | ||
| 2588 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2589 | reloc_entry->addend += 0x8000; | |
| 2590 | return bfd_reloc_continue; | |
| 2591 | } | |
| 2592 | ||
| 2593 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2594 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2595 | void *data, asection *input_section, | |
| 2596 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2597 | { |
| 2598 | bfd_vma TOCstart; | |
| 2599 | ||
| 2600 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2601 | call the generic function. Any adjustment will be done at final | |
| 2602 | link time. */ | |
| 2603 | if (output_bfd != NULL) | |
| cedb70c5 | 2604 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2605 | input_section, output_bfd, error_message); |
| 2606 | ||
| 2607 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2608 | if (TOCstart == 0) | |
| 1c865ab2 | 2609 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2610 | |
| 2611 | /* Subtract the TOC base address. */ | |
| 2612 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2613 | return bfd_reloc_continue; | |
| 2614 | } | |
| 2615 | ||
| 2616 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2617 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2618 | void *data, asection *input_section, | |
| 2619 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2620 | { |
| 2621 | bfd_vma TOCstart; | |
| 2622 | ||
| 2623 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2624 | call the generic function. Any adjustment will be done at final | |
| 2625 | link time. */ | |
| 2626 | if (output_bfd != NULL) | |
| cedb70c5 | 2627 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2628 | input_section, output_bfd, error_message); |
| 2629 | ||
| 2630 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2631 | if (TOCstart == 0) | |
| 1c865ab2 | 2632 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2633 | |
| 2634 | /* Subtract the TOC base address. */ | |
| 2635 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2636 | ||
| 2637 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2638 | reloc_entry->addend += 0x8000; | |
| 2639 | return bfd_reloc_continue; | |
| 2640 | } | |
| 2641 | ||
| 2642 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2643 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2644 | void *data, asection *input_section, | |
| 2645 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2646 | { |
| 2647 | bfd_vma TOCstart; | |
| 2648 | bfd_size_type octets; | |
| 2649 | ||
| 2650 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2651 | call the generic function. Any adjustment will be done at final | |
| 2652 | link time. */ | |
| 2653 | if (output_bfd != NULL) | |
| cedb70c5 | 2654 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2655 | input_section, output_bfd, error_message); |
| 2656 | ||
| 2657 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2658 | if (TOCstart == 0) | |
| 1c865ab2 | 2659 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2660 | |
| 2661 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2662 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
| 2663 | return bfd_reloc_ok; | |
| 2664 | } | |
| 2665 | ||
| 2666 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2667 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2668 | void *data, asection *input_section, | |
| 2669 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2670 | { |
| 2671 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2672 | call the generic function. Any adjustment will be done at final | |
| 2673 | link time. */ | |
| 2674 | if (output_bfd != NULL) | |
| cedb70c5 | 2675 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2676 | input_section, output_bfd, error_message); |
| 2677 | ||
| 2678 | if (error_message != NULL) | |
| 2679 | { | |
| 2680 | static char buf[60]; | |
| 2681 | sprintf (buf, "generic linker can't handle %s", | |
| 2682 | reloc_entry->howto->name); | |
| 2683 | *error_message = buf; | |
| 2684 | } | |
| 2685 | return bfd_reloc_dangerous; | |
| 2686 | } | |
| 2687 | ||
| 927be08e AM |
2688 | /* Track GOT entries needed for a given symbol. We might need more |
| 2689 | than one got entry per symbol. */ | |
| 2690 | struct got_entry | |
| 2691 | { | |
| 2692 | struct got_entry *next; | |
| 2693 | ||
| 2694 | /* The symbol addend that we'll be placing in the GOT. */ | |
| 2695 | bfd_vma addend; | |
| 2696 | ||
| 2697 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
| 2698 | symbol referenced from different input files. This is to support | |
| 2699 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
| 2700 | from one input file to another. After partitioning into TOC groups | |
| 2701 | we merge entries within the group. | |
| 2702 | ||
| 2703 | Point to the BFD owning this GOT entry. */ | |
| 2704 | bfd *owner; | |
| 2705 | ||
| 2706 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
| 2707 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
| f961d9dd | 2708 | unsigned char tls_type; |
| 927be08e AM |
2709 | |
| 2710 | /* Non-zero if got.ent points to real entry. */ | |
| f961d9dd | 2711 | unsigned char is_indirect; |
| 927be08e AM |
2712 | |
| 2713 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
| 2714 | union | |
| 2715 | { | |
| 2716 | bfd_signed_vma refcount; | |
| 2717 | bfd_vma offset; | |
| 2718 | struct got_entry *ent; | |
| 2719 | } got; | |
| 2720 | }; | |
| 2721 | ||
| 2722 | /* The same for PLT. */ | |
| 2723 | struct plt_entry | |
| 2724 | { | |
| 2725 | struct plt_entry *next; | |
| 2726 | ||
| 2727 | bfd_vma addend; | |
| 2728 | ||
| 2729 | union | |
| 2730 | { | |
| 2731 | bfd_signed_vma refcount; | |
| 2732 | bfd_vma offset; | |
| 2733 | } plt; | |
| 2734 | }; | |
| 2735 | ||
| e717da7e AM |
2736 | struct ppc64_elf_obj_tdata |
| 2737 | { | |
| 2738 | struct elf_obj_tdata elf; | |
| 2739 | ||
| 2740 | /* Shortcuts to dynamic linker sections. */ | |
| 2741 | asection *got; | |
| 2742 | asection *relgot; | |
| 2743 | ||
| b3fac117 AM |
2744 | /* Used during garbage collection. We attach global symbols defined |
| 2745 | on removed .opd entries to this section so that the sym is removed. */ | |
| 2746 | asection *deleted_section; | |
| 81688140 | 2747 | |
| 927be08e | 2748 | /* TLS local dynamic got entry handling. Support for multiple GOT |
| e717da7e | 2749 | sections means we potentially need one of these for each input bfd. */ |
| 927be08e | 2750 | struct got_entry tlsld_got; |
| 8860955f | 2751 | |
| 729eabd5 AM |
2752 | union { |
| 2753 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
| 2754 | Elf_Internal_Rela *relocs; | |
| 2755 | ||
| 2756 | /* Section contents. */ | |
| 2757 | bfd_byte *contents; | |
| 2758 | } opd; | |
| d77c8a4b AM |
2759 | |
| 2760 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
| 2761 | the reloc to be in the range -32768 to 32767. */ | |
| 98528052 AM |
2762 | unsigned int has_small_toc_reloc : 1; |
| 2763 | ||
| 560c8763 AM |
2764 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
| 2765 | instruction not one we handle. */ | |
| 2766 | unsigned int unexpected_toc_insn : 1; | |
| e717da7e AM |
2767 | }; |
| 2768 | ||
| 2769 | #define ppc64_elf_tdata(bfd) \ | |
| 2770 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
| 2771 | ||
| 2772 | #define ppc64_tlsld_got(bfd) \ | |
| 2773 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
| 2774 | ||
| 0c8d6e5c AM |
2775 | #define is_ppc64_elf(bfd) \ |
| 2776 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
| 4dfe6ac6 | 2777 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
| 0c8d6e5c | 2778 | |
| e717da7e AM |
2779 | /* Override the generic function because we store some extras. */ |
| 2780 | ||
| 2781 | static bfd_boolean | |
| 2782 | ppc64_elf_mkobject (bfd *abfd) | |
| 2783 | { | |
| 0ffa91dd | 2784 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
| 4dfe6ac6 | 2785 | PPC64_ELF_DATA); |
| e717da7e AM |
2786 | } |
| 2787 | ||
| feee612b AM |
2788 | /* Fix bad default arch selected for a 64 bit input bfd when the |
| 2789 | default is 32 bit. */ | |
| 2790 | ||
| b34976b6 | 2791 | static bfd_boolean |
| 4ce794b7 | 2792 | ppc64_elf_object_p (bfd *abfd) |
| feee612b AM |
2793 | { |
| 2794 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
| 2795 | { | |
| 2796 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
| 2797 | ||
| 2798 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
| 2799 | { | |
| 2800 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
| 2801 | abfd->arch_info = abfd->arch_info->next; | |
| 2802 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
| 2803 | } | |
| 2804 | } | |
| b34976b6 | 2805 | return TRUE; |
| feee612b AM |
2806 | } |
| 2807 | ||
| d37c89e5 AM |
2808 | /* Support for core dump NOTE sections. */ |
| 2809 | ||
| 2810 | static bfd_boolean | |
| 2811 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
| 2812 | { | |
| eea6121a | 2813 | size_t offset, size; |
| d37c89e5 AM |
2814 | |
| 2815 | if (note->descsz != 504) | |
| 2816 | return FALSE; | |
| 2817 | ||
| 2818 | /* pr_cursig */ | |
| 228e534f | 2819 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
| d37c89e5 AM |
2820 | |
| 2821 | /* pr_pid */ | |
| 228e534f | 2822 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
| d37c89e5 AM |
2823 | |
| 2824 | /* pr_reg */ | |
| 2825 | offset = 112; | |
| eea6121a | 2826 | size = 384; |
| d37c89e5 AM |
2827 | |
| 2828 | /* Make a ".reg/999" section. */ | |
| 2829 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
| eea6121a | 2830 | size, note->descpos + offset); |
| d37c89e5 AM |
2831 | } |
| 2832 | ||
| 2833 | static bfd_boolean | |
| 2834 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
| 2835 | { | |
| 2836 | if (note->descsz != 136) | |
| 2837 | return FALSE; | |
| 2838 | ||
| 228e534f | 2839 | elf_tdata (abfd)->core->pid |
| bc989cdc | 2840 | = bfd_get_32 (abfd, note->descdata + 24); |
| 228e534f | 2841 | elf_tdata (abfd)->core->program |
| d37c89e5 | 2842 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
| 228e534f | 2843 | elf_tdata (abfd)->core->command |
| d37c89e5 AM |
2844 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
| 2845 | ||
| 2846 | return TRUE; | |
| 2847 | } | |
| 2848 | ||
| 183e98be AM |
2849 | static char * |
| 2850 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
| 2851 | ...) | |
| 2852 | { | |
| 2853 | switch (note_type) | |
| 2854 | { | |
| 2855 | default: | |
| 2856 | return NULL; | |
| 2857 | ||
| 2858 | case NT_PRPSINFO: | |
| 2859 | { | |
| 2860 | char data[136]; | |
| 2861 | va_list ap; | |
| 2862 | ||
| 2863 | va_start (ap, note_type); | |
| 75cd47ed | 2864 | memset (data, 0, sizeof (data)); |
| 183e98be AM |
2865 | strncpy (data + 40, va_arg (ap, const char *), 16); |
| 2866 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
| 2867 | va_end (ap); | |
| 2868 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2869 | "CORE", note_type, data, sizeof (data)); | |
| 2870 | } | |
| 2871 | ||
| 2872 | case NT_PRSTATUS: | |
| 2873 | { | |
| 2874 | char data[504]; | |
| 2875 | va_list ap; | |
| 2876 | long pid; | |
| 2877 | int cursig; | |
| 2878 | const void *greg; | |
| 2879 | ||
| 2880 | va_start (ap, note_type); | |
| 2881 | memset (data, 0, 112); | |
| 2882 | pid = va_arg (ap, long); | |
| 2883 | bfd_put_32 (abfd, pid, data + 32); | |
| 2884 | cursig = va_arg (ap, int); | |
| 2885 | bfd_put_16 (abfd, cursig, data + 12); | |
| 2886 | greg = va_arg (ap, const void *); | |
| 2887 | memcpy (data + 112, greg, 384); | |
| 2888 | memset (data + 496, 0, 8); | |
| 2889 | va_end (ap); | |
| 2890 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2891 | "CORE", note_type, data, sizeof (data)); | |
| 2892 | } | |
| 2893 | } | |
| 2894 | } | |
| 2895 | ||
| 5d35169e AM |
2896 | /* Add extra PPC sections. */ |
| 2897 | ||
| b35d266b | 2898 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
| 7f4d3958 | 2899 | { |
| 0112cd26 NC |
2900 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
| 2901 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2902 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2903 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2904 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2905 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2906 | { NULL, 0, 0, 0, 0 } | |
| 5d35169e AM |
2907 | }; |
| 2908 | ||
| 7c8fe5c4 AM |
2909 | enum _ppc64_sec_type { |
| 2910 | sec_normal = 0, | |
| 2911 | sec_opd = 1, | |
| 2912 | sec_toc = 2 | |
| 2913 | }; | |
| 2914 | ||
| f0abc2a1 AM |
2915 | struct _ppc64_elf_section_data |
| 2916 | { | |
| 2917 | struct bfd_elf_section_data elf; | |
| 411e1bfb | 2918 | |
| f0abc2a1 AM |
2919 | union |
| 2920 | { | |
| 74f0fb50 AM |
2921 | /* An array with one entry for each opd function descriptor. */ |
| 2922 | struct _opd_sec_data | |
| 2923 | { | |
| 2924 | /* Points to the function code section for local opd entries. */ | |
| 2925 | asection **func_sec; | |
| 2926 | ||
| 2927 | /* After editing .opd, adjust references to opd local syms. */ | |
| 2928 | long *adjust; | |
| 2929 | } opd; | |
| 7c8fe5c4 | 2930 | |
| 3a71aa26 AM |
2931 | /* An array for toc sections, indexed by offset/8. */ |
| 2932 | struct _toc_sec_data | |
| 2933 | { | |
| 2934 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
| 2935 | unsigned *symndx; | |
| 2936 | ||
| 2937 | /* And the relocation addend. */ | |
| 2938 | bfd_vma *add; | |
| 2939 | } toc; | |
| 7c8fe5c4 AM |
2940 | } u; |
| 2941 | ||
| 2942 | enum _ppc64_sec_type sec_type:2; | |
| 411e1bfb | 2943 | |
| 7c8fe5c4 AM |
2944 | /* Flag set when small branches are detected. Used to |
| 2945 | select suitable defaults for the stub group size. */ | |
| 2946 | unsigned int has_14bit_branch:1; | |
| f0abc2a1 AM |
2947 | }; |
| 2948 | ||
| 2949 | #define ppc64_elf_section_data(sec) \ | |
| 411e1bfb | 2950 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
| f0abc2a1 AM |
2951 | |
| 2952 | static bfd_boolean | |
| 4ce794b7 | 2953 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
| f0abc2a1 | 2954 | { |
| f592407e AM |
2955 | if (!sec->used_by_bfd) |
| 2956 | { | |
| 2957 | struct _ppc64_elf_section_data *sdata; | |
| 2958 | bfd_size_type amt = sizeof (*sdata); | |
| f0abc2a1 | 2959 | |
| f592407e AM |
2960 | sdata = bfd_zalloc (abfd, amt); |
| 2961 | if (sdata == NULL) | |
| 2962 | return FALSE; | |
| 2963 | sec->used_by_bfd = sdata; | |
| 2964 | } | |
| f0abc2a1 AM |
2965 | |
| 2966 | return _bfd_elf_new_section_hook (abfd, sec); | |
| 2967 | } | |
| 4025353c | 2968 | |
| 74f0fb50 | 2969 | static struct _opd_sec_data * |
| 4025353c AM |
2970 | get_opd_info (asection * sec) |
| 2971 | { | |
| 2972 | if (sec != NULL | |
| 2973 | && ppc64_elf_section_data (sec) != NULL | |
| 7c8fe5c4 | 2974 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
| 74f0fb50 | 2975 | return &ppc64_elf_section_data (sec)->u.opd; |
| 4025353c AM |
2976 | return NULL; |
| 2977 | } | |
| ee67d69a AM |
2978 | |
| 2979 | static inline int | |
| 2980 | abiversion (bfd *abfd) | |
| 2981 | { | |
| 2982 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
| 2983 | } | |
| 2984 | ||
| 2985 | static inline void | |
| 2986 | set_abiversion (bfd *abfd, int ver) | |
| 2987 | { | |
| 2988 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
| 2989 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
| 2990 | } | |
| 90e3cdf2 JJ |
2991 | \f |
| 2992 | /* Parameters for the qsort hook. */ | |
| 90e3cdf2 JJ |
2993 | static bfd_boolean synthetic_relocatable; |
| 2994 | ||
| 699733f6 | 2995 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
| 90e3cdf2 JJ |
2996 | |
| 2997 | static int | |
| 2998 | compare_symbols (const void *ap, const void *bp) | |
| 2999 | { | |
| 3000 | const asymbol *a = * (const asymbol **) ap; | |
| 3001 | const asymbol *b = * (const asymbol **) bp; | |
| 3002 | ||
| 699733f6 AM |
3003 | /* Section symbols first. */ |
| 3004 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
| 90e3cdf2 | 3005 | return -1; |
| 699733f6 | 3006 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
| 90e3cdf2 JJ |
3007 | return 1; |
| 3008 | ||
| 699733f6 | 3009 | /* then .opd symbols. */ |
| ffcfec52 AM |
3010 | if (strcmp (a->section->name, ".opd") == 0 |
| 3011 | && strcmp (b->section->name, ".opd") != 0) | |
| 90e3cdf2 | 3012 | return -1; |
| ffcfec52 AM |
3013 | if (strcmp (a->section->name, ".opd") != 0 |
| 3014 | && strcmp (b->section->name, ".opd") == 0) | |
| 90e3cdf2 JJ |
3015 | return 1; |
| 3016 | ||
| 699733f6 | 3017 | /* then other code symbols. */ |
| 90e3cdf2 JJ |
3018 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
| 3019 | == (SEC_CODE | SEC_ALLOC) | |
| 3020 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3021 | != (SEC_CODE | SEC_ALLOC)) | |
| 3022 | return -1; | |
| 3023 | ||
| 3024 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3025 | != (SEC_CODE | SEC_ALLOC) | |
| 3026 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3027 | == (SEC_CODE | SEC_ALLOC)) | |
| 3028 | return 1; | |
| 3029 | ||
| 3030 | if (synthetic_relocatable) | |
| 3031 | { | |
| 3032 | if (a->section->id < b->section->id) | |
| 3033 | return -1; | |
| 3034 | ||
| 3035 | if (a->section->id > b->section->id) | |
| 3036 | return 1; | |
| 3037 | } | |
| 3038 | ||
| 3039 | if (a->value + a->section->vma < b->value + b->section->vma) | |
| 3040 | return -1; | |
| 3041 | ||
| 3042 | if (a->value + a->section->vma > b->value + b->section->vma) | |
| 3043 | return 1; | |
| 3044 | ||
| 4d35a0aa AM |
3045 | /* For syms with the same value, prefer strong dynamic global function |
| 3046 | syms over other syms. */ | |
| 3047 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
| 3048 | return -1; | |
| 3049 | ||
| 3050 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
| 3051 | return 1; | |
| 3052 | ||
| 3053 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
| 3054 | return -1; | |
| 3055 | ||
| 3056 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
| 3057 | return 1; | |
| 3058 | ||
| 3059 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
| 3060 | return -1; | |
| 3061 | ||
| 3062 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
| 3063 | return 1; | |
| 3064 | ||
| 3065 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
| 3066 | return -1; | |
| 3067 | ||
| 3068 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
| 3069 | return 1; | |
| 3070 | ||
| 90e3cdf2 JJ |
3071 | return 0; |
| 3072 | } | |
| 3073 | ||
| 699733f6 | 3074 | /* Search SYMS for a symbol of the given VALUE. */ |
| 90e3cdf2 | 3075 | |
| 699733f6 AM |
3076 | static asymbol * |
| 3077 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
| 90e3cdf2 | 3078 | { |
| 699733f6 | 3079 | long mid; |
| 90e3cdf2 | 3080 | |
| 699733f6 AM |
3081 | if (id == -1) |
| 3082 | { | |
| 3083 | while (lo < hi) | |
| 3084 | { | |
| 3085 | mid = (lo + hi) >> 1; | |
| 3086 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
| 3087 | lo = mid + 1; | |
| 3088 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
| 3089 | hi = mid; | |
| 3090 | else | |
| 3091 | return syms[mid]; | |
| 3092 | } | |
| 3093 | } | |
| 3094 | else | |
| 3095 | { | |
| 3096 | while (lo < hi) | |
| 3097 | { | |
| 3098 | mid = (lo + hi) >> 1; | |
| 3099 | if (syms[mid]->section->id < id) | |
| 3100 | lo = mid + 1; | |
| 3101 | else if (syms[mid]->section->id > id) | |
| 3102 | hi = mid; | |
| 3103 | else if (syms[mid]->value < value) | |
| 3104 | lo = mid + 1; | |
| 3105 | else if (syms[mid]->value > value) | |
| 3106 | hi = mid; | |
| 3107 | else | |
| 3108 | return syms[mid]; | |
| 3109 | } | |
| 3110 | } | |
| 3111 | return NULL; | |
| 90e3cdf2 JJ |
3112 | } |
| 3113 | ||
| 468392fb AM |
3114 | static bfd_boolean |
| 3115 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
| 3116 | { | |
| 3117 | bfd_vma vma = *(bfd_vma *) ptr; | |
| 3118 | return ((section->flags & SEC_ALLOC) != 0 | |
| 3119 | && section->vma <= vma | |
| 3120 | && vma < section->vma + section->size); | |
| 3121 | } | |
| 3122 | ||
| 699733f6 | 3123 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
| 468392fb | 3124 | entry syms. Also generate @plt symbols for the glink branch table. */ |
| 90e3cdf2 JJ |
3125 | |
| 3126 | static long | |
| a7535cf3 AM |
3127 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
| 3128 | long static_count, asymbol **static_syms, | |
| 3129 | long dyn_count, asymbol **dyn_syms, | |
| c9727e01 | 3130 | asymbol **ret) |
| 90e3cdf2 JJ |
3131 | { |
| 3132 | asymbol *s; | |
| 699733f6 AM |
3133 | long i; |
| 3134 | long count; | |
| 90e3cdf2 | 3135 | char *names; |
| a7535cf3 | 3136 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
| ee67d69a | 3137 | asection *opd = NULL; |
| 90e3cdf2 | 3138 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
| a7535cf3 | 3139 | asymbol **syms; |
| ee67d69a | 3140 | int abi = abiversion (abfd); |
| 90e3cdf2 JJ |
3141 | |
| 3142 | *ret = NULL; | |
| 3143 | ||
| ee67d69a AM |
3144 | if (abi < 2) |
| 3145 | { | |
| 3146 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
| 3147 | if (opd == NULL && abi == 1) | |
| 3148 | return 0; | |
| 3149 | } | |
| 90e3cdf2 | 3150 | |
| a7535cf3 | 3151 | symcount = static_count; |
| c9727e01 | 3152 | if (!relocatable) |
| a7535cf3 | 3153 | symcount += dyn_count; |
| 90e3cdf2 | 3154 | if (symcount == 0) |
| c9727e01 | 3155 | return 0; |
| 90e3cdf2 | 3156 | |
| a7535cf3 AM |
3157 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
| 3158 | if (syms == NULL) | |
| 7356fed5 | 3159 | return -1; |
| a7535cf3 AM |
3160 | |
| 3161 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
| 3162 | { | |
| 3163 | /* Use both symbol tables. */ | |
| 3164 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
| 3165 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
| 3166 | } | |
| 3167 | else if (!relocatable && static_count == 0) | |
| 3168 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
| 3169 | else | |
| 3170 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
| 3171 | ||
| 90e3cdf2 | 3172 | synthetic_relocatable = relocatable; |
| 595da8c5 | 3173 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
| 90e3cdf2 | 3174 | |
| c9727e01 AM |
3175 | if (!relocatable && symcount > 1) |
| 3176 | { | |
| 3177 | long j; | |
| 3178 | /* Trim duplicate syms, since we may have merged the normal and | |
| 3179 | dynamic symbols. Actually, we only care about syms that have | |
| 3b36f7e6 | 3180 | different values, so trim any with the same value. */ |
| c9727e01 AM |
3181 | for (i = 1, j = 1; i < symcount; ++i) |
| 3182 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
| 3183 | != syms[i]->value + syms[i]->section->vma) | |
| 3184 | syms[j++] = syms[i]; | |
| 3185 | symcount = j; | |
| 3186 | } | |
| 3187 | ||
| 699733f6 | 3188 | i = 0; |
| ffcfec52 | 3189 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
| 699733f6 AM |
3190 | ++i; |
| 3191 | codesecsym = i; | |
| 90e3cdf2 | 3192 | |
| 699733f6 AM |
3193 | for (; i < symcount; ++i) |
| 3194 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3195 | != (SEC_CODE | SEC_ALLOC)) | |
| 3196 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 3197 | break; | |
| 3198 | codesecsymend = i; | |
| 90e3cdf2 | 3199 | |
| 699733f6 AM |
3200 | for (; i < symcount; ++i) |
| 3201 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 3202 | break; | |
| 3203 | secsymend = i; | |
| 90e3cdf2 | 3204 | |
| 699733f6 | 3205 | for (; i < symcount; ++i) |
| ffcfec52 | 3206 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
| 699733f6 AM |
3207 | break; |
| 3208 | opdsymend = i; | |
| 90e3cdf2 | 3209 | |
| 699733f6 AM |
3210 | for (; i < symcount; ++i) |
| 3211 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3212 | != (SEC_CODE | SEC_ALLOC)) | |
| 3213 | break; | |
| 3214 | symcount = i; | |
| 3215 | ||
| c9727e01 | 3216 | count = 0; |
| 90e3cdf2 | 3217 | |
| 699733f6 | 3218 | if (relocatable) |
| 90e3cdf2 | 3219 | { |
| 699733f6 AM |
3220 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| 3221 | arelent *r; | |
| 3222 | size_t size; | |
| 3223 | long relcount; | |
| 90e3cdf2 | 3224 | |
| 468392fb AM |
3225 | if (opdsymend == secsymend) |
| 3226 | goto done; | |
| 3227 | ||
| 699733f6 | 3228 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
| 90e3cdf2 | 3229 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
| 7356fed5 | 3230 | if (relcount == 0) |
| c9727e01 | 3231 | goto done; |
| 90e3cdf2 | 3232 | |
| 7356fed5 AM |
3233 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
| 3234 | { | |
| 3235 | count = -1; | |
| 3236 | goto done; | |
| 3237 | } | |
| 3238 | ||
| 699733f6 | 3239 | size = 0; |
| 595da8c5 | 3240 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 699733f6 AM |
3241 | { |
| 3242 | asymbol *sym; | |
| 90e3cdf2 | 3243 | |
| 595da8c5 | 3244 | while (r < opd->relocation + relcount |
| 699733f6 AM |
3245 | && r->address < syms[i]->value + opd->vma) |
| 3246 | ++r; | |
| 90e3cdf2 | 3247 | |
| 595da8c5 | 3248 | if (r == opd->relocation + relcount) |
| 699733f6 | 3249 | break; |
| 90e3cdf2 | 3250 | |
| 699733f6 AM |
3251 | if (r->address != syms[i]->value + opd->vma) |
| 3252 | continue; | |
| 90e3cdf2 | 3253 | |
| 699733f6 AM |
3254 | if (r->howto->type != R_PPC64_ADDR64) |
| 3255 | continue; | |
| 90e3cdf2 | 3256 | |
| 699733f6 AM |
3257 | sym = *r->sym_ptr_ptr; |
| 3258 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 3259 | sym->section->id, sym->value + r->addend)) | |
| 3260 | { | |
| 3261 | ++count; | |
| 3262 | size += sizeof (asymbol); | |
| 3263 | size += strlen (syms[i]->name) + 2; | |
| 3264 | } | |
| 3265 | } | |
| 90e3cdf2 | 3266 | |
| 699733f6 AM |
3267 | s = *ret = bfd_malloc (size); |
| 3268 | if (s == NULL) | |
| 3269 | { | |
| 7356fed5 | 3270 | count = -1; |
| c9727e01 | 3271 | goto done; |
| 699733f6 | 3272 | } |
| 90e3cdf2 | 3273 | |
| 699733f6 | 3274 | names = (char *) (s + count); |
| 90e3cdf2 | 3275 | |
| 595da8c5 | 3276 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 90e3cdf2 | 3277 | { |
| 699733f6 | 3278 | asymbol *sym; |
| 90e3cdf2 | 3279 | |
| 595da8c5 | 3280 | while (r < opd->relocation + relcount |
| 699733f6 AM |
3281 | && r->address < syms[i]->value + opd->vma) |
| 3282 | ++r; | |
| 90e3cdf2 | 3283 | |
| 595da8c5 | 3284 | if (r == opd->relocation + relcount) |
| 699733f6 AM |
3285 | break; |
| 3286 | ||
| 3287 | if (r->address != syms[i]->value + opd->vma) | |
| 3288 | continue; | |
| 3289 | ||
| 3290 | if (r->howto->type != R_PPC64_ADDR64) | |
| 3291 | continue; | |
| 90e3cdf2 | 3292 | |
| 699733f6 AM |
3293 | sym = *r->sym_ptr_ptr; |
| 3294 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 3295 | sym->section->id, sym->value + r->addend)) | |
| 3296 | { | |
| 3297 | size_t len; | |
| 3298 | ||
| 3299 | *s = *syms[i]; | |
| 6ba2a415 | 3300 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3301 | s->section = sym->section; |
| 3302 | s->value = sym->value + r->addend; | |
| 3303 | s->name = names; | |
| 3304 | *names++ = '.'; | |
| 3305 | len = strlen (syms[i]->name); | |
| 3306 | memcpy (names, syms[i]->name, len + 1); | |
| 3307 | names += len + 1; | |
| 6f610d07 UW |
3308 | /* Have udata.p point back to the original symbol this |
| 3309 | synthetic symbol was derived from. */ | |
| 3310 | s->udata.p = syms[i]; | |
| 699733f6 AM |
3311 | s++; |
| 3312 | } | |
| 3313 | } | |
| 3314 | } | |
| 3315 | else | |
| 90e3cdf2 | 3316 | { |
| 468392fb | 3317 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| ee67d69a | 3318 | bfd_byte *contents = NULL; |
| 699733f6 | 3319 | size_t size; |
| 468392fb AM |
3320 | long plt_count = 0; |
| 3321 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
| 3322 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
| 3323 | arelent *p; | |
| 90e3cdf2 | 3324 | |
| ee67d69a | 3325 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
| 699733f6 | 3326 | { |
| ee67d69a | 3327 | free_contents_and_exit: |
| 699733f6 | 3328 | if (contents) |
| ee67d69a | 3329 | free (contents); |
| 7356fed5 | 3330 | count = -1; |
| c9727e01 | 3331 | goto done; |
| 699733f6 | 3332 | } |
| 90e3cdf2 | 3333 | |
| 699733f6 AM |
3334 | size = 0; |
| 3335 | for (i = secsymend; i < opdsymend; ++i) | |
| 3336 | { | |
| 3337 | bfd_vma ent; | |
| 90e3cdf2 | 3338 | |
| 5ef11c02 AM |
3339 | /* Ignore bogus symbols. */ |
| 3340 | if (syms[i]->value > opd->size - 8) | |
| 3341 | continue; | |
| 3342 | ||
| 699733f6 AM |
3343 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3344 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 3345 | { | |
| 3346 | ++count; | |
| 3347 | size += sizeof (asymbol); | |
| 3348 | size += strlen (syms[i]->name) + 2; | |
| 3349 | } | |
| 3350 | } | |
| 90e3cdf2 | 3351 | |
| 468392fb | 3352 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
| 066ee829 AM |
3353 | if (dyn_count != 0 |
| 3354 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
| 468392fb AM |
3355 | { |
| 3356 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
| 3357 | size_t extdynsize; | |
| 3358 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
| 3359 | ||
| 3360 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
| 3361 | goto free_contents_and_exit; | |
| 3362 | ||
| 3363 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
| 3364 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
| 3365 | ||
| 3366 | extdyn = dynbuf; | |
| 3367 | extdynend = extdyn + dynamic->size; | |
| 3368 | for (; extdyn < extdynend; extdyn += extdynsize) | |
| 3369 | { | |
| 3370 | Elf_Internal_Dyn dyn; | |
| 3371 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
| 3372 | ||
| 3373 | if (dyn.d_tag == DT_NULL) | |
| 3374 | break; | |
| 3375 | ||
| 3376 | if (dyn.d_tag == DT_PPC64_GLINK) | |
| 3377 | { | |
| b9e5796b AM |
3378 | /* The first glink stub starts at offset 32; see |
| 3379 | comment in ppc64_elf_finish_dynamic_sections. */ | |
| 3380 | glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4; | |
| 468392fb AM |
3381 | /* The .glink section usually does not survive the final |
| 3382 | link; search for the section (usually .text) where the | |
| 3383 | glink stubs now reside. */ | |
| 3384 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
| 3385 | &glink_vma); | |
| 3386 | break; | |
| 3387 | } | |
| 3388 | } | |
| 3389 | ||
| 3390 | free (dynbuf); | |
| 3391 | } | |
| 3392 | ||
| 3393 | if (glink != NULL) | |
| 3394 | { | |
| 3395 | /* Determine __glink trampoline by reading the relative branch | |
| 3396 | from the first glink stub. */ | |
| 3397 | bfd_byte buf[4]; | |
| b9e5796b AM |
3398 | unsigned int off = 0; |
| 3399 | ||
| 3400 | while (bfd_get_section_contents (abfd, glink, buf, | |
| 3401 | glink_vma + off - glink->vma, 4)) | |
| 468392fb AM |
3402 | { |
| 3403 | unsigned int insn = bfd_get_32 (abfd, buf); | |
| 3404 | insn ^= B_DOT; | |
| 3405 | if ((insn & ~0x3fffffc) == 0) | |
| b9e5796b AM |
3406 | { |
| 3407 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
| 3408 | break; | |
| 3409 | } | |
| 3410 | off += 4; | |
| 3411 | if (off > 4) | |
| 3412 | break; | |
| 468392fb AM |
3413 | } |
| 3414 | ||
| 3415 | if (resolv_vma) | |
| 3416 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
| 468392fb | 3417 | |
| 066ee829 AM |
3418 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
| 3419 | if (relplt != NULL) | |
| 3420 | { | |
| 3421 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
| 3422 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
| 3423 | goto free_contents_and_exit; | |
| 68ffbac6 | 3424 | |
| 066ee829 AM |
3425 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
| 3426 | size += plt_count * sizeof (asymbol); | |
| 468392fb | 3427 | |
| 066ee829 AM |
3428 | p = relplt->relocation; |
| 3429 | for (i = 0; i < plt_count; i++, p++) | |
| e054468f AM |
3430 | { |
| 3431 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
| 3432 | if (p->addend != 0) | |
| 3433 | size += sizeof ("+0x") - 1 + 16; | |
| 3434 | } | |
| 066ee829 | 3435 | } |
| 468392fb AM |
3436 | } |
| 3437 | ||
| 699733f6 AM |
3438 | s = *ret = bfd_malloc (size); |
| 3439 | if (s == NULL) | |
| 7356fed5 | 3440 | goto free_contents_and_exit; |
| 90e3cdf2 | 3441 | |
| 468392fb | 3442 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
| 90e3cdf2 | 3443 | |
| 699733f6 | 3444 | for (i = secsymend; i < opdsymend; ++i) |
| 90e3cdf2 | 3445 | { |
| 699733f6 | 3446 | bfd_vma ent; |
| 90e3cdf2 | 3447 | |
| 5ef11c02 AM |
3448 | if (syms[i]->value > opd->size - 8) |
| 3449 | continue; | |
| 3450 | ||
| 699733f6 AM |
3451 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3452 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 90e3cdf2 | 3453 | { |
| c9727e01 | 3454 | long lo, hi; |
| 699733f6 | 3455 | size_t len; |
| c9727e01 | 3456 | asection *sec = abfd->sections; |
| 90e3cdf2 | 3457 | |
| 699733f6 AM |
3458 | *s = *syms[i]; |
| 3459 | lo = codesecsym; | |
| 3460 | hi = codesecsymend; | |
| 3461 | while (lo < hi) | |
| 3462 | { | |
| c9727e01 | 3463 | long mid = (lo + hi) >> 1; |
| 699733f6 AM |
3464 | if (syms[mid]->section->vma < ent) |
| 3465 | lo = mid + 1; | |
| 3466 | else if (syms[mid]->section->vma > ent) | |
| 3467 | hi = mid; | |
| 3468 | else | |
| c9727e01 AM |
3469 | { |
| 3470 | sec = syms[mid]->section; | |
| 3471 | break; | |
| 3472 | } | |
| 699733f6 AM |
3473 | } |
| 3474 | ||
| c9727e01 | 3475 | if (lo >= hi && lo > codesecsym) |
| 699733f6 | 3476 | sec = syms[lo - 1]->section; |
| 699733f6 AM |
3477 | |
| 3478 | for (; sec != NULL; sec = sec->next) | |
| 3479 | { | |
| 3480 | if (sec->vma > ent) | |
| 3481 | break; | |
| 63524580 JK |
3482 | /* SEC_LOAD may not be set if SEC is from a separate debug |
| 3483 | info file. */ | |
| 3484 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 699733f6 AM |
3485 | break; |
| 3486 | if ((sec->flags & SEC_CODE) != 0) | |
| 3487 | s->section = sec; | |
| 3488 | } | |
| 6ba2a415 | 3489 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3490 | s->value = ent - s->section->vma; |
| 3491 | s->name = names; | |
| 3492 | *names++ = '.'; | |
| 3493 | len = strlen (syms[i]->name); | |
| 3494 | memcpy (names, syms[i]->name, len + 1); | |
| 3495 | names += len + 1; | |
| 6f610d07 UW |
3496 | /* Have udata.p point back to the original symbol this |
| 3497 | synthetic symbol was derived from. */ | |
| 3498 | s->udata.p = syms[i]; | |
| 699733f6 | 3499 | s++; |
| 90e3cdf2 | 3500 | } |
| 90e3cdf2 | 3501 | } |
| 699733f6 | 3502 | free (contents); |
| 468392fb AM |
3503 | |
| 3504 | if (glink != NULL && relplt != NULL) | |
| 3505 | { | |
| 3506 | if (resolv_vma) | |
| 3507 | { | |
| 3508 | /* Add a symbol for the main glink trampoline. */ | |
| 86a4952b | 3509 | memset (s, 0, sizeof *s); |
| 468392fb | 3510 | s->the_bfd = abfd; |
| 6ba2a415 | 3511 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
| 468392fb AM |
3512 | s->section = glink; |
| 3513 | s->value = resolv_vma - glink->vma; | |
| 3514 | s->name = names; | |
| 3515 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
| 3516 | names += sizeof ("__glink_PLTresolve"); | |
| 3517 | s++; | |
| 3518 | count++; | |
| 3519 | } | |
| 3520 | ||
| 3521 | /* FIXME: It would be very much nicer to put sym@plt on the | |
| 3522 | stub rather than on the glink branch table entry. The | |
| 3523 | objdump disassembler would then use a sensible symbol | |
| 3524 | name on plt calls. The difficulty in doing so is | |
| 3525 | a) finding the stubs, and, | |
| 3526 | b) matching stubs against plt entries, and, | |
| 3527 | c) there can be multiple stubs for a given plt entry. | |
| 3528 | ||
| 3529 | Solving (a) could be done by code scanning, but older | |
| 3530 | ppc64 binaries used different stubs to current code. | |
| 3531 | (b) is the tricky one since you need to known the toc | |
| 3532 | pointer for at least one function that uses a pic stub to | |
| 3533 | be able to calculate the plt address referenced. | |
| 3534 | (c) means gdb would need to set multiple breakpoints (or | |
| 3535 | find the glink branch itself) when setting breakpoints | |
| 3536 | for pending shared library loads. */ | |
| 3537 | p = relplt->relocation; | |
| 3538 | for (i = 0; i < plt_count; i++, p++) | |
| 3539 | { | |
| 3540 | size_t len; | |
| 3541 | ||
| 3542 | *s = **p->sym_ptr_ptr; | |
| 3543 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
| 3544 | we are defining a symbol, ensure one of them is set. */ | |
| 3545 | if ((s->flags & BSF_LOCAL) == 0) | |
| 3546 | s->flags |= BSF_GLOBAL; | |
| 6ba2a415 | 3547 | s->flags |= BSF_SYNTHETIC; |
| 468392fb AM |
3548 | s->section = glink; |
| 3549 | s->value = glink_vma - glink->vma; | |
| 3550 | s->name = names; | |
| 3551 | s->udata.p = NULL; | |
| 3552 | len = strlen ((*p->sym_ptr_ptr)->name); | |
| 3553 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
| 3554 | names += len; | |
| e054468f AM |
3555 | if (p->addend != 0) |
| 3556 | { | |
| 3557 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
| 3558 | names += sizeof ("+0x") - 1; | |
| 3559 | bfd_sprintf_vma (abfd, names, p->addend); | |
| 3560 | names += strlen (names); | |
| 3561 | } | |
| 468392fb AM |
3562 | memcpy (names, "@plt", sizeof ("@plt")); |
| 3563 | names += sizeof ("@plt"); | |
| 3564 | s++; | |
| b9e5796b AM |
3565 | if (abi < 2) |
| 3566 | { | |
| 3567 | glink_vma += 8; | |
| 3568 | if (i >= 0x8000) | |
| 3569 | glink_vma += 4; | |
| 3570 | } | |
| 3571 | else | |
| 468392fb AM |
3572 | glink_vma += 4; |
| 3573 | } | |
| 3574 | count += plt_count; | |
| 3575 | } | |
| 90e3cdf2 JJ |
3576 | } |
| 3577 | ||
| c9727e01 | 3578 | done: |
| a7535cf3 | 3579 | free (syms); |
| 90e3cdf2 JJ |
3580 | return count; |
| 3581 | } | |
| 5bd4f169 | 3582 | \f |
| 65f38f15 AM |
3583 | /* The following functions are specific to the ELF linker, while |
| 3584 | functions above are used generally. Those named ppc64_elf_* are | |
| 3585 | called by the main ELF linker code. They appear in this file more | |
| 3586 | or less in the order in which they are called. eg. | |
| 3587 | ppc64_elf_check_relocs is called early in the link process, | |
| 3588 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
| e86ce104 AM |
3589 | called. |
| 3590 | ||
| 3591 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
| 3592 | functions have both a function code symbol and a function descriptor | |
| 3593 | symbol. A call to foo in a relocatable object file looks like: | |
| 3594 | ||
| 3595 | . .text | |
| 3596 | . x: | |
| 3597 | . bl .foo | |
| 3598 | . nop | |
| 3599 | ||
| 3600 | The function definition in another object file might be: | |
| 3601 | ||
| 3602 | . .section .opd | |
| 3603 | . foo: .quad .foo | |
| 3604 | . .quad .TOC.@tocbase | |
| 3605 | . .quad 0 | |
| 3606 | . | |
| 3607 | . .text | |
| 3608 | . .foo: blr | |
| 3609 | ||
| 3610 | When the linker resolves the call during a static link, the branch | |
| 3611 | unsurprisingly just goes to .foo and the .opd information is unused. | |
| 3612 | If the function definition is in a shared library, things are a little | |
| 3613 | different: The call goes via a plt call stub, the opd information gets | |
| 3614 | copied to the plt, and the linker patches the nop. | |
| 3615 | ||
| 3616 | . x: | |
| 3617 | . bl .foo_stub | |
| 3618 | . ld 2,40(1) | |
| 3619 | . | |
| 3620 | . | |
| 3621 | . .foo_stub: | |
| 71a39c98 AM |
3622 | . std 2,40(1) # in practice, the call stub |
| 3623 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
| 3624 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
| 3625 | . ld 12,0(11) | |
| 3626 | . ld 2,8(11) | |
| 3627 | . mtctr 12 | |
| 3628 | . ld 11,16(11) | |
| e86ce104 AM |
3629 | . bctr |
| 3630 | . | |
| 3631 | . .section .plt | |
| 3632 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
| 3633 | ||
| 3634 | The "reloc ()" notation is supposed to indicate that the linker emits | |
| 3635 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
| 3636 | copying. | |
| 3637 | ||
| 3638 | What are the difficulties here? Well, firstly, the relocations | |
| 3639 | examined by the linker in check_relocs are against the function code | |
| 3640 | sym .foo, while the dynamic relocation in the plt is emitted against | |
| 3641 | the function descriptor symbol, foo. Somewhere along the line, we need | |
| 3642 | to carefully copy dynamic link information from one symbol to the other. | |
| 3643 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
| 3644 | symbol as is normal for most other backends. We need foo dynamic | |
| 3645 | instead, at least for an application final link. However, when | |
| 3646 | creating a shared library containing foo, we need to have both symbols | |
| 3647 | dynamic so that references to .foo are satisfied during the early | |
| 3648 | stages of linking. Otherwise the linker might decide to pull in a | |
| 8387904d AM |
3649 | definition from some other object, eg. a static library. |
| 3650 | ||
| 3651 | Update: As of August 2004, we support a new convention. Function | |
| 3652 | calls may use the function descriptor symbol, ie. "bl foo". This | |
| 3653 | behaves exactly as "bl .foo". */ | |
| 65f38f15 | 3654 | |
| 1d483afe | 3655 | /* Of those relocs that might be copied as dynamic relocs, this function |
| 58ac9f71 AM |
3656 | selects those that must be copied when linking a shared library, |
| 3657 | even when the symbol is local. */ | |
| 65f38f15 | 3658 | |
| 1d483afe AM |
3659 | static int |
| 3660 | must_be_dyn_reloc (struct bfd_link_info *info, | |
| 3661 | enum elf_ppc64_reloc_type r_type) | |
| 3662 | { | |
| 3663 | switch (r_type) | |
| 3664 | { | |
| 3665 | default: | |
| 3666 | return 1; | |
| 3667 | ||
| 3668 | case R_PPC64_REL32: | |
| 3669 | case R_PPC64_REL64: | |
| 3670 | case R_PPC64_REL30: | |
| 3671 | return 0; | |
| 3672 | ||
| 3673 | case R_PPC64_TPREL16: | |
| 3674 | case R_PPC64_TPREL16_LO: | |
| 3675 | case R_PPC64_TPREL16_HI: | |
| 3676 | case R_PPC64_TPREL16_HA: | |
| 3677 | case R_PPC64_TPREL16_DS: | |
| 3678 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
3679 | case R_PPC64_TPREL16_HIGH: |
| 3680 | case R_PPC64_TPREL16_HIGHA: | |
| 1d483afe AM |
3681 | case R_PPC64_TPREL16_HIGHER: |
| 3682 | case R_PPC64_TPREL16_HIGHERA: | |
| 3683 | case R_PPC64_TPREL16_HIGHEST: | |
| 3684 | case R_PPC64_TPREL16_HIGHESTA: | |
| 3685 | case R_PPC64_TPREL64: | |
| 3686 | return !info->executable; | |
| 3687 | } | |
| 3688 | } | |
| 65f38f15 | 3689 | |
| f4656909 AM |
3690 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
| 3691 | copying dynamic variables from a shared lib into an app's dynbss | |
| 3692 | section, and instead use a dynamic relocation to point into the | |
| 5d35169e AM |
3693 | shared lib. With code that gcc generates, it's vital that this be |
| 3694 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
| 3695 | the address of a function descriptor, which resides in the .opd | |
| 3696 | section. gcc uses the descriptor directly rather than going via the | |
| 3697 | GOT as some other ABI's do, which means that initialized function | |
| 3698 | pointers must reference the descriptor. Thus, a function pointer | |
| 3699 | initialized to the address of a function in a shared library will | |
| 3700 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
| 4cc11e76 | 3701 | redefines the function descriptor symbol to point to the copy. This |
| 5d35169e AM |
3702 | presents a problem as a plt entry for that function is also |
| 3703 | initialized from the function descriptor symbol and the copy reloc | |
| 3704 | may not be initialized first. */ | |
| a23b6845 | 3705 | #define ELIMINATE_COPY_RELOCS 1 |
| f4656909 | 3706 | |
| 721956f4 | 3707 | /* Section name for stubs is the associated section name plus this |
| 29942be8 NC |
3708 | string. */ |
| 3709 | #define STUB_SUFFIX ".stub" | |
| 721956f4 AM |
3710 | |
| 3711 | /* Linker stubs. | |
| 3712 | ppc_stub_long_branch: | |
| 3713 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
| 3714 | destination, but a 24 bit branch in a stub section will reach. | |
| 3715 | . b dest | |
| 3716 | ||
| 3717 | ppc_stub_plt_branch: | |
| 3718 | Similar to the above, but a 24 bit branch in the stub section won't | |
| 3719 | reach its destination. | |
| 71a39c98 AM |
3720 | . addis %r11,%r2,xxx@toc@ha |
| 3721 | . ld %r12,xxx@toc@l(%r11) | |
| 3722 | . mtctr %r12 | |
| 721956f4 AM |
3723 | . bctr |
| 3724 | ||
| 3725 | ppc_stub_plt_call: | |
| 2c66dc6c AM |
3726 | Used to call a function in a shared library. If it so happens that |
| 3727 | the plt entry referenced crosses a 64k boundary, then an extra | |
| 71a39c98 | 3728 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
| 721956f4 | 3729 | . std %r2,40(%r1) |
| 71a39c98 AM |
3730 | . addis %r11,%r2,xxx@toc@ha |
| 3731 | . ld %r12,xxx+0@toc@l(%r11) | |
| 3732 | . mtctr %r12 | |
| 3733 | . ld %r2,xxx+8@toc@l(%r11) | |
| 3734 | . ld %r11,xxx+16@toc@l(%r11) | |
| 721956f4 | 3735 | . bctr |
| ad8e1ba5 AM |
3736 | |
| 3737 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
| 3738 | code to adjust the value and save r2 to support multiple toc sections. | |
| 3739 | A ppc_stub_long_branch with an r2 offset looks like: | |
| 3740 | . std %r2,40(%r1) | |
| 3741 | . addis %r2,%r2,off@ha | |
| 3742 | . addi %r2,%r2,off@l | |
| 3743 | . b dest | |
| 3744 | ||
| 3745 | A ppc_stub_plt_branch with an r2 offset looks like: | |
| 3746 | . std %r2,40(%r1) | |
| 71a39c98 AM |
3747 | . addis %r11,%r2,xxx@toc@ha |
| 3748 | . ld %r12,xxx@toc@l(%r11) | |
| ad8e1ba5 AM |
3749 | . addis %r2,%r2,off@ha |
| 3750 | . addi %r2,%r2,off@l | |
| 71a39c98 | 3751 | . mtctr %r12 |
| ad8e1ba5 | 3752 | . bctr |
| ac2df442 AM |
3753 | |
| 3754 | In cases where the "addis" instruction would add zero, the "addis" is | |
| 3755 | omitted and following instructions modified slightly in some cases. | |
| 721956f4 AM |
3756 | */ |
| 3757 | ||
| 3758 | enum ppc_stub_type { | |
| 3759 | ppc_stub_none, | |
| 3760 | ppc_stub_long_branch, | |
| ad8e1ba5 | 3761 | ppc_stub_long_branch_r2off, |
| 721956f4 | 3762 | ppc_stub_plt_branch, |
| ad8e1ba5 | 3763 | ppc_stub_plt_branch_r2off, |
| 794e51c0 AM |
3764 | ppc_stub_plt_call, |
| 3765 | ppc_stub_plt_call_r2save | |
| 721956f4 AM |
3766 | }; |
| 3767 | ||
| 3768 | struct ppc_stub_hash_entry { | |
| 3769 | ||
| 3770 | /* Base hash table entry structure. */ | |
| 3771 | struct bfd_hash_entry root; | |
| 3772 | ||
| ad8e1ba5 AM |
3773 | enum ppc_stub_type stub_type; |
| 3774 | ||
| 721956f4 AM |
3775 | /* The stub section. */ |
| 3776 | asection *stub_sec; | |
| 3777 | ||
| 3778 | /* Offset within stub_sec of the beginning of this stub. */ | |
| 3779 | bfd_vma stub_offset; | |
| 3780 | ||
| 3781 | /* Given the symbol's value and its section we can determine its final | |
| 3782 | value when building the stubs (so the stub knows where to jump. */ | |
| 3783 | bfd_vma target_value; | |
| 3784 | asection *target_section; | |
| 3785 | ||
| 721956f4 AM |
3786 | /* The symbol table entry, if any, that this was derived from. */ |
| 3787 | struct ppc_link_hash_entry *h; | |
| e054468f | 3788 | struct plt_entry *plt_ent; |
| 721956f4 AM |
3789 | |
| 3790 | /* Where this stub is being called from, or, in the case of combined | |
| 3791 | stub sections, the first input section in the group. */ | |
| 3792 | asection *id_sec; | |
| 6911b7dc AM |
3793 | |
| 3794 | /* Symbol st_other. */ | |
| 3795 | unsigned char other; | |
| 721956f4 AM |
3796 | }; |
| 3797 | ||
| 3798 | struct ppc_branch_hash_entry { | |
| 3799 | ||
| 3800 | /* Base hash table entry structure. */ | |
| 3801 | struct bfd_hash_entry root; | |
| 3802 | ||
| c456f082 | 3803 | /* Offset within branch lookup table. */ |
| 721956f4 AM |
3804 | unsigned int offset; |
| 3805 | ||
| 3806 | /* Generation marker. */ | |
| 3807 | unsigned int iter; | |
| 3808 | }; | |
| 65f38f15 | 3809 | |
| 19e08130 AM |
3810 | /* Used to track dynamic relocations for local symbols. */ |
| 3811 | struct ppc_dyn_relocs | |
| 3812 | { | |
| 3813 | struct ppc_dyn_relocs *next; | |
| 3814 | ||
| 3815 | /* The input section of the reloc. */ | |
| 3816 | asection *sec; | |
| 3817 | ||
| 3818 | /* Total number of relocs copied for the input section. */ | |
| 3819 | unsigned int count : 31; | |
| 3820 | ||
| 3821 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
| 3822 | unsigned int ifunc : 1; | |
| 3823 | }; | |
| 3824 | ||
| 65f38f15 AM |
3825 | struct ppc_link_hash_entry |
| 3826 | { | |
| 3827 | struct elf_link_hash_entry elf; | |
| 3828 | ||
| b3fac117 AM |
3829 | union { |
| 3830 | /* A pointer to the most recently used stub hash entry against this | |
| 3831 | symbol. */ | |
| 3832 | struct ppc_stub_hash_entry *stub_cache; | |
| 3833 | ||
| 3834 | /* A pointer to the next symbol starting with a '.' */ | |
| 3835 | struct ppc_link_hash_entry *next_dot_sym; | |
| 3836 | } u; | |
| 721956f4 | 3837 | |
| 65f38f15 | 3838 | /* Track dynamic relocs copied for this symbol. */ |
| 6061a67d | 3839 | struct elf_dyn_relocs *dyn_relocs; |
| e86ce104 | 3840 | |
| 721956f4 | 3841 | /* Link between function code and descriptor symbols. */ |
| 34814b9f | 3842 | struct ppc_link_hash_entry *oh; |
| 721956f4 | 3843 | |
| e86ce104 AM |
3844 | /* Flag function code and descriptor symbols. */ |
| 3845 | unsigned int is_func:1; | |
| 3846 | unsigned int is_func_descriptor:1; | |
| 908b32fc | 3847 | unsigned int fake:1; |
| 411e1bfb | 3848 | |
| c5614fa4 AM |
3849 | /* Whether global opd/toc sym has been adjusted or not. |
| 3850 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
| 3851 | should be set for all globals defined in any opd/toc section. */ | |
| 754021d0 AM |
3852 | unsigned int adjust_done:1; |
| 3853 | ||
| 99877b66 AM |
3854 | /* Set if we twiddled this symbol to weak at some stage. */ |
| 3855 | unsigned int was_undefined:1; | |
| 3856 | ||
| 411e1bfb | 3857 | /* Contexts in which symbol is used in the GOT (or TOC). |
| e7b938ca AM |
3858 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
| 3859 | corresponding relocs are encountered during check_relocs. | |
| 3860 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
| 3861 | indicate the corresponding GOT entry type is not needed. | |
| 3862 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
| 3863 | a TPREL one. We use a separate flag rather than setting TPREL | |
| 3864 | just for convenience in distinguishing the two cases. */ | |
| 3865 | #define TLS_GD 1 /* GD reloc. */ | |
| 3866 | #define TLS_LD 2 /* LD reloc. */ | |
| 3867 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
| 3868 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
| 3869 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
| 3870 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
| 3871 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
| e054468f | 3872 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
| f961d9dd | 3873 | unsigned char tls_mask; |
| 65f38f15 AM |
3874 | }; |
| 3875 | ||
| 3876 | /* ppc64 ELF linker hash table. */ | |
| 3877 | ||
| 3878 | struct ppc_link_hash_table | |
| 3879 | { | |
| 3880 | struct elf_link_hash_table elf; | |
| 3881 | ||
| 721956f4 AM |
3882 | /* The stub hash table. */ |
| 3883 | struct bfd_hash_table stub_hash_table; | |
| 3884 | ||
| 3885 | /* Another hash table for plt_branch stubs. */ | |
| 3886 | struct bfd_hash_table branch_hash_table; | |
| 3887 | ||
| 3b421ab3 AM |
3888 | /* Hash table for function prologue tocsave. */ |
| 3889 | htab_t tocsave_htab; | |
| 3890 | ||
| e7d1c40c AM |
3891 | /* Various options and other info passed from the linker. */ |
| 3892 | struct ppc64_elf_params *params; | |
| 721956f4 AM |
3893 | |
| 3894 | /* Array to keep track of which stub sections have been created, and | |
| 3895 | information on stub grouping. */ | |
| 3896 | struct map_stub { | |
| 3897 | /* This is the section to which stubs in the group will be attached. */ | |
| 3898 | asection *link_sec; | |
| 3899 | /* The stub section. */ | |
| 3900 | asection *stub_sec; | |
| ad8e1ba5 AM |
3901 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
| 3902 | bfd_vma toc_off; | |
| 721956f4 AM |
3903 | } *stub_group; |
| 3904 | ||
| ad8e1ba5 AM |
3905 | /* Temp used when calculating TOC pointers. */ |
| 3906 | bfd_vma toc_curr; | |
| bf102f86 AM |
3907 | bfd *toc_bfd; |
| 3908 | asection *toc_first_sec; | |
| ad8e1ba5 | 3909 | |
| 8f3bab57 AM |
3910 | /* Highest input section id. */ |
| 3911 | int top_id; | |
| 3912 | ||
| 734b6cf9 AM |
3913 | /* Highest output section index. */ |
| 3914 | int top_index; | |
| 3915 | ||
| b3fac117 AM |
3916 | /* Used when adding symbols. */ |
| 3917 | struct ppc_link_hash_entry *dot_syms; | |
| 3918 | ||
| 734b6cf9 AM |
3919 | /* List of input sections for each output section. */ |
| 3920 | asection **input_list; | |
| 721956f4 | 3921 | |
| 33e44f2e | 3922 | /* Shortcuts to get to dynamic linker sections. */ |
| 4ce794b7 AM |
3923 | asection *dynbss; |
| 3924 | asection *relbss; | |
| 3925 | asection *glink; | |
| 82bd7b59 | 3926 | asection *sfpr; |
| 4ce794b7 AM |
3927 | asection *brlt; |
| 3928 | asection *relbrlt; | |
| 58d180e8 | 3929 | asection *glink_eh_frame; |
| ec338859 | 3930 | |
| 8387904d AM |
3931 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
| 3932 | struct ppc_link_hash_entry *tls_get_addr; | |
| 3933 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
| 411e1bfb | 3934 | |
| 927be08e AM |
3935 | /* The size of reliplt used by got entry relocs. */ |
| 3936 | bfd_size_type got_reli_size; | |
| 3937 | ||
| 9b5ecbd0 | 3938 | /* Statistics. */ |
| 794e51c0 | 3939 | unsigned long stub_count[ppc_stub_plt_call_r2save]; |
| 9b5ecbd0 | 3940 | |
| ee75fd95 AM |
3941 | /* Number of stubs against global syms. */ |
| 3942 | unsigned long stub_globals; | |
| 3943 | ||
| ee67d69a AM |
3944 | /* Set if we're linking code with function descriptors. */ |
| 3945 | unsigned int opd_abi:1; | |
| 3946 | ||
| 4c52953f | 3947 | /* Support for multiple toc sections. */ |
| 33c0ec9d | 3948 | unsigned int do_multi_toc:1; |
| 4c52953f | 3949 | unsigned int multi_toc_needed:1; |
| 927be08e | 3950 | unsigned int second_toc_pass:1; |
| 67f0cbdb | 3951 | unsigned int do_toc_opt:1; |
| 4c52953f | 3952 | |
| 5d1634d7 | 3953 | /* Set on error. */ |
| 99877b66 | 3954 | unsigned int stub_error:1; |
| 721956f4 | 3955 | |
| f6c7c3e8 | 3956 | /* Temp used by ppc64_elf_before_check_relocs. */ |
| 99877b66 | 3957 | unsigned int twiddled_syms:1; |
| 721956f4 AM |
3958 | |
| 3959 | /* Incremented every time we size stubs. */ | |
| 3960 | unsigned int stub_iteration; | |
| 5d1634d7 | 3961 | |
| 87d72d41 AM |
3962 | /* Small local sym cache. */ |
| 3963 | struct sym_cache sym_cache; | |
| 65f38f15 AM |
3964 | }; |
| 3965 | ||
| 4c52953f AM |
3966 | /* Rename some of the generic section flags to better document how they |
| 3967 | are used here. */ | |
| b0dddeec AM |
3968 | |
| 3969 | /* Nonzero if this section has TLS related relocations. */ | |
| 3970 | #define has_tls_reloc sec_flg0 | |
| 3971 | ||
| 3972 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
| 3973 | #define has_tls_get_addr_call sec_flg1 | |
| 3974 | ||
| 3975 | /* Nonzero if this section has any toc or got relocs. */ | |
| 3976 | #define has_toc_reloc sec_flg2 | |
| 3977 | ||
| 3978 | /* Nonzero if this section has a call to another section that uses | |
| 3979 | the toc or got. */ | |
| d77c8a4b | 3980 | #define makes_toc_func_call sec_flg3 |
| b0dddeec AM |
3981 | |
| 3982 | /* Recursion protection when determining above flag. */ | |
| d77c8a4b | 3983 | #define call_check_in_progress sec_flg4 |
| 70cc837d | 3984 | #define call_check_done sec_flg5 |
| 4c52953f | 3985 | |
| 65f38f15 AM |
3986 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
| 3987 | ||
| 3988 | #define ppc_hash_table(p) \ | |
| 4dfe6ac6 NC |
3989 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
| 3990 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
| 65f38f15 | 3991 | |
| 721956f4 AM |
3992 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
| 3993 | ((struct ppc_stub_hash_entry *) \ | |
| 3994 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 3995 | ||
| 3996 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
| 3997 | ((struct ppc_branch_hash_entry *) \ | |
| 3998 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 3999 | ||
| 4000 | /* Create an entry in the stub hash table. */ | |
| 4001 | ||
| 4002 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4003 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
| 4004 | struct bfd_hash_table *table, | |
| 4005 | const char *string) | |
| 721956f4 AM |
4006 | { |
| 4007 | /* Allocate the structure if it has not already been allocated by a | |
| 4008 | subclass. */ | |
| 4009 | if (entry == NULL) | |
| 4010 | { | |
| 4011 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
| 4012 | if (entry == NULL) | |
| 4013 | return entry; | |
| 4014 | } | |
| 4015 | ||
| 4016 | /* Call the allocation method of the superclass. */ | |
| 4017 | entry = bfd_hash_newfunc (entry, table, string); | |
| 4018 | if (entry != NULL) | |
| 4019 | { | |
| 4020 | struct ppc_stub_hash_entry *eh; | |
| 4021 | ||
| 4022 | /* Initialize the local fields. */ | |
| 4023 | eh = (struct ppc_stub_hash_entry *) entry; | |
| ad8e1ba5 | 4024 | eh->stub_type = ppc_stub_none; |
| 721956f4 AM |
4025 | eh->stub_sec = NULL; |
| 4026 | eh->stub_offset = 0; | |
| 4027 | eh->target_value = 0; | |
| 4028 | eh->target_section = NULL; | |
| 721956f4 | 4029 | eh->h = NULL; |
| 6911b7dc | 4030 | eh->plt_ent = NULL; |
| 721956f4 | 4031 | eh->id_sec = NULL; |
| 6911b7dc | 4032 | eh->other = 0; |
| 721956f4 AM |
4033 | } |
| 4034 | ||
| 4035 | return entry; | |
| 4036 | } | |
| 4037 | ||
| 4038 | /* Create an entry in the branch hash table. */ | |
| 4039 | ||
| 4040 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4041 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
| 4042 | struct bfd_hash_table *table, | |
| 4043 | const char *string) | |
| 721956f4 AM |
4044 | { |
| 4045 | /* Allocate the structure if it has not already been allocated by a | |
| 4046 | subclass. */ | |
| 4047 | if (entry == NULL) | |
| 4048 | { | |
| 4049 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
| 4050 | if (entry == NULL) | |
| 4051 | return entry; | |
| 4052 | } | |
| 4053 | ||
| 4054 | /* Call the allocation method of the superclass. */ | |
| 4055 | entry = bfd_hash_newfunc (entry, table, string); | |
| 4056 | if (entry != NULL) | |
| 4057 | { | |
| 4058 | struct ppc_branch_hash_entry *eh; | |
| 4059 | ||
| 4060 | /* Initialize the local fields. */ | |
| 4061 | eh = (struct ppc_branch_hash_entry *) entry; | |
| 4062 | eh->offset = 0; | |
| 4063 | eh->iter = 0; | |
| 4064 | } | |
| 4065 | ||
| 4066 | return entry; | |
| 4067 | } | |
| 4068 | ||
| 65f38f15 AM |
4069 | /* Create an entry in a ppc64 ELF linker hash table. */ |
| 4070 | ||
| 4071 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4072 | link_hash_newfunc (struct bfd_hash_entry *entry, |
| 4073 | struct bfd_hash_table *table, | |
| 4074 | const char *string) | |
| 65f38f15 AM |
4075 | { |
| 4076 | /* Allocate the structure if it has not already been allocated by a | |
| 4077 | subclass. */ | |
| 4078 | if (entry == NULL) | |
| 4079 | { | |
| 4080 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
| 4081 | if (entry == NULL) | |
| 4082 | return entry; | |
| 4083 | } | |
| 4084 | ||
| 4085 | /* Call the allocation method of the superclass. */ | |
| 4086 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
| 4087 | if (entry != NULL) | |
| 4088 | { | |
| 4089 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
| 4090 | ||
| b3fac117 | 4091 | memset (&eh->u.stub_cache, 0, |
| 908b32fc | 4092 | (sizeof (struct ppc_link_hash_entry) |
| b3fac117 AM |
4093 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
| 4094 | ||
| 4095 | /* When making function calls, old ABI code references function entry | |
| 4096 | points (dot symbols), while new ABI code references the function | |
| 4097 | descriptor symbol. We need to make any combination of reference and | |
| 4098 | definition work together, without breaking archive linking. | |
| 4099 | ||
| 4100 | For a defined function "foo" and an undefined call to "bar": | |
| 4101 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
| 4102 | "bar" too). | |
| 4103 | A new object defines "foo" and references "bar". | |
| 4104 | ||
| 4105 | A new object thus has no problem with its undefined symbols being | |
| 4106 | satisfied by definitions in an old object. On the other hand, the | |
| 4107 | old object won't have ".bar" satisfied by a new object. | |
| 4108 | ||
| 4109 | Keep a list of newly added dot-symbols. */ | |
| 4110 | ||
| 4111 | if (string[0] == '.') | |
| 4112 | { | |
| 4113 | struct ppc_link_hash_table *htab; | |
| 4114 | ||
| 4115 | htab = (struct ppc_link_hash_table *) table; | |
| 4116 | eh->u.next_dot_sym = htab->dot_syms; | |
| 4117 | htab->dot_syms = eh; | |
| 4118 | } | |
| 65f38f15 AM |
4119 | } |
| 4120 | ||
| 4121 | return entry; | |
| 4122 | } | |
| 4123 | ||
| 3b421ab3 AM |
4124 | struct tocsave_entry { |
| 4125 | asection *sec; | |
| 4126 | bfd_vma offset; | |
| 4127 | }; | |
| 4128 | ||
| 4129 | static hashval_t | |
| 4130 | tocsave_htab_hash (const void *p) | |
| 4131 | { | |
| 4132 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
| 4133 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
| 4134 | } | |
| 4135 | ||
| 4136 | static int | |
| 4137 | tocsave_htab_eq (const void *p1, const void *p2) | |
| 4138 | { | |
| 4139 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
| 4140 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
| 4141 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
| 4142 | } | |
| 4143 | ||
| 68faa637 AM |
4144 | /* Destroy a ppc64 ELF linker hash table. */ |
| 4145 | ||
| 4146 | static void | |
| d495ab0d | 4147 | ppc64_elf_link_hash_table_free (bfd *obfd) |
| 68faa637 | 4148 | { |
| d495ab0d | 4149 | struct ppc_link_hash_table *htab; |
| 68faa637 | 4150 | |
| d495ab0d | 4151 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
| 68faa637 AM |
4152 | if (htab->tocsave_htab) |
| 4153 | htab_delete (htab->tocsave_htab); | |
| d495ab0d AM |
4154 | bfd_hash_table_free (&htab->branch_hash_table); |
| 4155 | bfd_hash_table_free (&htab->stub_hash_table); | |
| 4156 | _bfd_elf_link_hash_table_free (obfd); | |
| 68faa637 AM |
4157 | } |
| 4158 | ||
| 65f38f15 AM |
4159 | /* Create a ppc64 ELF linker hash table. */ |
| 4160 | ||
| 4161 | static struct bfd_link_hash_table * | |
| 4ce794b7 | 4162 | ppc64_elf_link_hash_table_create (bfd *abfd) |
| 65f38f15 AM |
4163 | { |
| 4164 | struct ppc_link_hash_table *htab; | |
| 4165 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
| 4166 | ||
| 4ce794b7 | 4167 | htab = bfd_zmalloc (amt); |
| 65f38f15 AM |
4168 | if (htab == NULL) |
| 4169 | return NULL; | |
| 4170 | ||
| 66eb6687 | 4171 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
| 4dfe6ac6 NC |
4172 | sizeof (struct ppc_link_hash_entry), |
| 4173 | PPC64_ELF_DATA)) | |
| 65f38f15 | 4174 | { |
| e2d34d7d | 4175 | free (htab); |
| 65f38f15 AM |
4176 | return NULL; |
| 4177 | } | |
| 4178 | ||
| 721956f4 | 4179 | /* Init the stub hash table too. */ |
| 66eb6687 AM |
4180 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
| 4181 | sizeof (struct ppc_stub_hash_entry))) | |
| 2915c55b | 4182 | { |
| d495ab0d | 4183 | _bfd_elf_link_hash_table_free (abfd); |
| 2915c55b JK |
4184 | return NULL; |
| 4185 | } | |
| 721956f4 AM |
4186 | |
| 4187 | /* And the branch hash table. */ | |
| 66eb6687 AM |
4188 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
| 4189 | sizeof (struct ppc_branch_hash_entry))) | |
| 2915c55b JK |
4190 | { |
| 4191 | bfd_hash_table_free (&htab->stub_hash_table); | |
| d495ab0d | 4192 | _bfd_elf_link_hash_table_free (abfd); |
| 2915c55b JK |
4193 | return NULL; |
| 4194 | } | |
| 721956f4 | 4195 | |
| 3b421ab3 AM |
4196 | htab->tocsave_htab = htab_try_create (1024, |
| 4197 | tocsave_htab_hash, | |
| 4198 | tocsave_htab_eq, | |
| 4199 | NULL); | |
| 4200 | if (htab->tocsave_htab == NULL) | |
| 2915c55b | 4201 | { |
| d495ab0d | 4202 | ppc64_elf_link_hash_table_free (abfd); |
| 2915c55b JK |
4203 | return NULL; |
| 4204 | } | |
| d495ab0d | 4205 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
| 3b421ab3 | 4206 | |
| 3254fd24 AM |
4207 | /* Initializing two fields of the union is just cosmetic. We really |
| 4208 | only care about glist, but when compiled on a 32-bit host the | |
| 4209 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
| 4210 | debugger inspection of these fields look nicer. */ | |
| a6aa5195 AM |
4211 | htab->elf.init_got_refcount.refcount = 0; |
| 4212 | htab->elf.init_got_refcount.glist = NULL; | |
| 4213 | htab->elf.init_plt_refcount.refcount = 0; | |
| 4214 | htab->elf.init_plt_refcount.glist = NULL; | |
| 4215 | htab->elf.init_got_offset.offset = 0; | |
| 4216 | htab->elf.init_got_offset.glist = NULL; | |
| 4217 | htab->elf.init_plt_offset.offset = 0; | |
| 4218 | htab->elf.init_plt_offset.glist = NULL; | |
| 3254fd24 | 4219 | |
| 65f38f15 AM |
4220 | return &htab->elf.root; |
| 4221 | } | |
| 4222 | ||
| bfeb4a28 AM |
4223 | /* Create sections for linker generated code. */ |
| 4224 | ||
| 4225 | static bfd_boolean | |
| 4226 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
| 4227 | { | |
| 4228 | struct ppc_link_hash_table *htab; | |
| 4229 | flagword flags; | |
| 4230 | ||
| 4231 | htab = ppc_hash_table (info); | |
| 4232 | ||
| 4233 | /* Create .sfpr for code to save and restore fp regs. */ | |
| 4234 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
| 4235 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4236 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
| 4237 | flags); | |
| 4238 | if (htab->sfpr == NULL | |
| 4239 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
| 4240 | return FALSE; | |
| 4241 | ||
| 4242 | /* Create .glink for lazy dynamic linking support. */ | |
| 4243 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
| 4244 | flags); | |
| 4245 | if (htab->glink == NULL | |
| 4246 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
| 4247 | return FALSE; | |
| 4248 | ||
| 4249 | if (!info->no_ld_generated_unwind_info) | |
| 4250 | { | |
| 4251 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
| 4252 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4253 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
| 4254 | ".eh_frame", | |
| 4255 | flags); | |
| 4256 | if (htab->glink_eh_frame == NULL | |
| 4257 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
| 4258 | return FALSE; | |
| 4259 | } | |
| 4260 | ||
| 4261 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
| 33e44f2e AM |
4262 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
| 4263 | if (htab->elf.iplt == NULL | |
| 4264 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
| bfeb4a28 AM |
4265 | return FALSE; |
| 4266 | ||
| 4267 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
| 4268 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 33e44f2e AM |
4269 | htab->elf.irelplt |
| 4270 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
| 4271 | if (htab->elf.irelplt == NULL | |
| 4272 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
| bfeb4a28 AM |
4273 | return FALSE; |
| 4274 | ||
| 4275 | /* Create branch lookup table for plt_branch stubs. */ | |
| 4276 | flags = (SEC_ALLOC | SEC_LOAD | |
| 4277 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4278 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
| 4279 | flags); | |
| 4280 | if (htab->brlt == NULL | |
| 4281 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
| 4282 | return FALSE; | |
| 4283 | ||
| 4284 | if (!info->shared) | |
| 4285 | return TRUE; | |
| 4286 | ||
| 4287 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
| 4288 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4289 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
| 4290 | ".rela.branch_lt", | |
| 4291 | flags); | |
| 4292 | if (htab->relbrlt == NULL | |
| 4293 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
| 4294 | return FALSE; | |
| 4295 | ||
| 4296 | return TRUE; | |
| 4297 | } | |
| 4298 | ||
| e717da7e AM |
4299 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
| 4300 | ||
| bfeb4a28 | 4301 | bfd_boolean |
| e7d1c40c AM |
4302 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
| 4303 | struct ppc64_elf_params *params) | |
| e717da7e AM |
4304 | { |
| 4305 | struct ppc_link_hash_table *htab; | |
| 4306 | ||
| e7d1c40c | 4307 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
| e717da7e AM |
4308 | |
| 4309 | /* Always hook our dynamic sections into the first bfd, which is the | |
| 4310 | linker created stub bfd. This ensures that the GOT header is at | |
| 4311 | the start of the output TOC section. */ | |
| 4312 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 | 4313 | if (htab == NULL) |
| bfeb4a28 | 4314 | return FALSE; |
| e7d1c40c AM |
4315 | htab->elf.dynobj = params->stub_bfd; |
| 4316 | htab->params = params; | |
| bfeb4a28 AM |
4317 | |
| 4318 | if (info->relocatable) | |
| 4319 | return TRUE; | |
| 4320 | ||
| 4321 | return create_linkage_sections (htab->elf.dynobj, info); | |
| e717da7e AM |
4322 | } |
| 4323 | ||
| 721956f4 AM |
4324 | /* Build a name for an entry in the stub hash table. */ |
| 4325 | ||
| 4326 | static char * | |
| 4ce794b7 AM |
4327 | ppc_stub_name (const asection *input_section, |
| 4328 | const asection *sym_sec, | |
| 4329 | const struct ppc_link_hash_entry *h, | |
| 4330 | const Elf_Internal_Rela *rel) | |
| 721956f4 AM |
4331 | { |
| 4332 | char *stub_name; | |
| bcaa2f82 | 4333 | ssize_t len; |
| 721956f4 AM |
4334 | |
| 4335 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
| 4336 | offsets from a sym as a branch target? In fact, we could | |
| 4337 | probably assume the addend is always zero. */ | |
| 4338 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
| 4339 | ||
| 4340 | if (h) | |
| 4341 | { | |
| 4342 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
| 4343 | stub_name = bfd_malloc (len); | |
| 46de2a7c AM |
4344 | if (stub_name == NULL) |
| 4345 | return stub_name; | |
| 4346 | ||
| bcaa2f82 AM |
4347 | len = sprintf (stub_name, "%08x.%s+%x", |
| 4348 | input_section->id & 0xffffffff, | |
| 4349 | h->elf.root.root.string, | |
| 4350 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 AM |
4351 | } |
| 4352 | else | |
| 4353 | { | |
| ad8e1ba5 | 4354 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
| 721956f4 | 4355 | stub_name = bfd_malloc (len); |
| 46de2a7c AM |
4356 | if (stub_name == NULL) |
| 4357 | return stub_name; | |
| 4358 | ||
| bcaa2f82 AM |
4359 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
| 4360 | input_section->id & 0xffffffff, | |
| 4361 | sym_sec->id & 0xffffffff, | |
| 4362 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
| 4363 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 | 4364 | } |
| bcaa2f82 | 4365 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
| ee75fd95 | 4366 | stub_name[len - 2] = 0; |
| 721956f4 AM |
4367 | return stub_name; |
| 4368 | } | |
| 4369 | ||
| 4370 | /* Look up an entry in the stub hash. Stub entries are cached because | |
| 4371 | creating the stub name takes a bit of time. */ | |
| 4372 | ||
| 4373 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
4374 | ppc_get_stub_entry (const asection *input_section, |
| 4375 | const asection *sym_sec, | |
| 039b3fef | 4376 | struct ppc_link_hash_entry *h, |
| 4ce794b7 AM |
4377 | const Elf_Internal_Rela *rel, |
| 4378 | struct ppc_link_hash_table *htab) | |
| 721956f4 AM |
4379 | { |
| 4380 | struct ppc_stub_hash_entry *stub_entry; | |
| 721956f4 AM |
4381 | const asection *id_sec; |
| 4382 | ||
| 4383 | /* If this input section is part of a group of sections sharing one | |
| 4384 | stub section, then use the id of the first section in the group. | |
| 4385 | Stub names need to include a section id, as there may well be | |
| 4386 | more than one stub used to reach say, printf, and we need to | |
| 4387 | distinguish between them. */ | |
| 4388 | id_sec = htab->stub_group[input_section->id].link_sec; | |
| 4389 | ||
| b3fac117 AM |
4390 | if (h != NULL && h->u.stub_cache != NULL |
| 4391 | && h->u.stub_cache->h == h | |
| 4392 | && h->u.stub_cache->id_sec == id_sec) | |
| 721956f4 | 4393 | { |
| b3fac117 | 4394 | stub_entry = h->u.stub_cache; |
| 721956f4 AM |
4395 | } |
| 4396 | else | |
| 4397 | { | |
| 4398 | char *stub_name; | |
| 4399 | ||
| 4400 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
| 4401 | if (stub_name == NULL) | |
| 4402 | return NULL; | |
| 4403 | ||
| 4404 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 4405 | stub_name, FALSE, FALSE); |
| 721956f4 | 4406 | if (h != NULL) |
| b3fac117 | 4407 | h->u.stub_cache = stub_entry; |
| 721956f4 AM |
4408 | |
| 4409 | free (stub_name); | |
| 4410 | } | |
| 4411 | ||
| 4412 | return stub_entry; | |
| 4413 | } | |
| 4414 | ||
| 4415 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
| 4416 | stub entry are initialised. */ | |
| 4417 | ||
| 4418 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
4419 | ppc_add_stub (const char *stub_name, |
| 4420 | asection *section, | |
| 25f53a85 | 4421 | struct bfd_link_info *info) |
| 721956f4 | 4422 | { |
| 25f53a85 | 4423 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 721956f4 AM |
4424 | asection *link_sec; |
| 4425 | asection *stub_sec; | |
| 4426 | struct ppc_stub_hash_entry *stub_entry; | |
| 4427 | ||
| 4428 | link_sec = htab->stub_group[section->id].link_sec; | |
| 4429 | stub_sec = htab->stub_group[section->id].stub_sec; | |
| 4430 | if (stub_sec == NULL) | |
| 4431 | { | |
| 4432 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
| 4433 | if (stub_sec == NULL) | |
| 4434 | { | |
| d4c88bbb | 4435 | size_t namelen; |
| 721956f4 AM |
4436 | bfd_size_type len; |
| 4437 | char *s_name; | |
| 4438 | ||
| d4c88bbb AM |
4439 | namelen = strlen (link_sec->name); |
| 4440 | len = namelen + sizeof (STUB_SUFFIX); | |
| e7d1c40c | 4441 | s_name = bfd_alloc (htab->params->stub_bfd, len); |
| 721956f4 AM |
4442 | if (s_name == NULL) |
| 4443 | return NULL; | |
| 4444 | ||
| d4c88bbb AM |
4445 | memcpy (s_name, link_sec->name, namelen); |
| 4446 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
| e7d1c40c | 4447 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); |
| 721956f4 AM |
4448 | if (stub_sec == NULL) |
| 4449 | return NULL; | |
| 4450 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
| 4451 | } | |
| 4452 | htab->stub_group[section->id].stub_sec = stub_sec; | |
| 4453 | } | |
| 4454 | ||
| 4455 | /* Enter this entry into the linker stub hash table. */ | |
| 4456 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
| b34976b6 | 4457 | TRUE, FALSE); |
| 721956f4 AM |
4458 | if (stub_entry == NULL) |
| 4459 | { | |
| 8de848d8 | 4460 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
| 25f53a85 | 4461 | section->owner, stub_name); |
| 721956f4 AM |
4462 | return NULL; |
| 4463 | } | |
| 4464 | ||
| 4465 | stub_entry->stub_sec = stub_sec; | |
| 4466 | stub_entry->stub_offset = 0; | |
| 4467 | stub_entry->id_sec = link_sec; | |
| 4468 | return stub_entry; | |
| 4469 | } | |
| 4470 | ||
| e717da7e AM |
4471 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
| 4472 | not already done. */ | |
| 65f38f15 | 4473 | |
| b34976b6 | 4474 | static bfd_boolean |
| e717da7e | 4475 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 65f38f15 | 4476 | { |
| e717da7e AM |
4477 | asection *got, *relgot; |
| 4478 | flagword flags; | |
| 4479 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 65f38f15 | 4480 | |
| 0c8d6e5c | 4481 | if (!is_ppc64_elf (abfd)) |
| 0ffa91dd | 4482 | return FALSE; |
| 4dfe6ac6 NC |
4483 | if (htab == NULL) |
| 4484 | return FALSE; | |
| 0ffa91dd | 4485 | |
| 33e44f2e AM |
4486 | if (!htab->elf.sgot |
| 4487 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
| 4488 | return FALSE; | |
| e717da7e AM |
4489 | |
| 4490 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
| 4491 | | SEC_LINKER_CREATED); | |
| 4492 | ||
| c456f082 | 4493 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
| e717da7e | 4494 | if (!got |
| e717da7e AM |
4495 | || !bfd_set_section_alignment (abfd, got, 3)) |
| 4496 | return FALSE; | |
| 65f38f15 | 4497 | |
| c456f082 AM |
4498 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
| 4499 | flags | SEC_READONLY); | |
| e717da7e | 4500 | if (!relgot |
| e717da7e | 4501 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
| b34976b6 | 4502 | return FALSE; |
| e717da7e AM |
4503 | |
| 4504 | ppc64_elf_tdata (abfd)->got = got; | |
| 4505 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
| b34976b6 | 4506 | return TRUE; |
| 65f38f15 | 4507 | } |
| 5bd4f169 | 4508 | |
| 82bd7b59 | 4509 | /* Create the dynamic sections, and set up shortcuts. */ |
| 5bd4f169 | 4510 | |
| b34976b6 | 4511 | static bfd_boolean |
| 4ce794b7 | 4512 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
| 5bd4f169 | 4513 | { |
| 65f38f15 | 4514 | struct ppc_link_hash_table *htab; |
| 5bd4f169 | 4515 | |
| 65f38f15 | 4516 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
| b34976b6 | 4517 | return FALSE; |
| 65f38f15 | 4518 | |
| e717da7e | 4519 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
4520 | if (htab == NULL) |
| 4521 | return FALSE; | |
| 4522 | ||
| 3d4d4302 | 4523 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
| 65f38f15 | 4524 | if (!info->shared) |
| 3d4d4302 | 4525 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
| 65f38f15 | 4526 | |
| 33e44f2e | 4527 | if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss |
| 4ce794b7 | 4528 | || (!info->shared && !htab->relbss)) |
| 65f38f15 AM |
4529 | abort (); |
| 4530 | ||
| b34976b6 | 4531 | return TRUE; |
| 5bd4f169 AM |
4532 | } |
| 4533 | ||
| b31867b6 AM |
4534 | /* Follow indirect and warning symbol links. */ |
| 4535 | ||
| 4536 | static inline struct bfd_link_hash_entry * | |
| 4537 | follow_link (struct bfd_link_hash_entry *h) | |
| 4538 | { | |
| 4539 | while (h->type == bfd_link_hash_indirect | |
| 4540 | || h->type == bfd_link_hash_warning) | |
| 4541 | h = h->u.i.link; | |
| 4542 | return h; | |
| 4543 | } | |
| 4544 | ||
| 4545 | static inline struct elf_link_hash_entry * | |
| 4546 | elf_follow_link (struct elf_link_hash_entry *h) | |
| 4547 | { | |
| 4548 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
| 4549 | } | |
| 4550 | ||
| 4551 | static inline struct ppc_link_hash_entry * | |
| 4552 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
| 4553 | { | |
| 4554 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
| 4555 | } | |
| 4556 | ||
| 40d16e0b AM |
4557 | /* Merge PLT info on FROM with that on TO. */ |
| 4558 | ||
| 4559 | static void | |
| 4560 | move_plt_plist (struct ppc_link_hash_entry *from, | |
| 4561 | struct ppc_link_hash_entry *to) | |
| 4562 | { | |
| 4563 | if (from->elf.plt.plist != NULL) | |
| 4564 | { | |
| 4565 | if (to->elf.plt.plist != NULL) | |
| 4566 | { | |
| 4567 | struct plt_entry **entp; | |
| 4568 | struct plt_entry *ent; | |
| 4569 | ||
| 4570 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
| 4571 | { | |
| 4572 | struct plt_entry *dent; | |
| 4573 | ||
| 4574 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
| 4575 | if (dent->addend == ent->addend) | |
| 4576 | { | |
| 4577 | dent->plt.refcount += ent->plt.refcount; | |
| 4578 | *entp = ent->next; | |
| 4579 | break; | |
| 4580 | } | |
| 4581 | if (dent == NULL) | |
| 4582 | entp = &ent->next; | |
| 4583 | } | |
| 4584 | *entp = to->elf.plt.plist; | |
| 4585 | } | |
| 4586 | ||
| 4587 | to->elf.plt.plist = from->elf.plt.plist; | |
| 4588 | from->elf.plt.plist = NULL; | |
| 4589 | } | |
| 4590 | } | |
| 4591 | ||
| 65f38f15 AM |
4592 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 4593 | ||
| 4594 | static void | |
| fcfa13d2 AM |
4595 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 4596 | struct elf_link_hash_entry *dir, | |
| 4597 | struct elf_link_hash_entry *ind) | |
| 65f38f15 AM |
4598 | { |
| 4599 | struct ppc_link_hash_entry *edir, *eind; | |
| 4600 | ||
| 4601 | edir = (struct ppc_link_hash_entry *) dir; | |
| 4602 | eind = (struct ppc_link_hash_entry *) ind; | |
| 4603 | ||
| c79d6685 AM |
4604 | edir->is_func |= eind->is_func; |
| 4605 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
| 4606 | edir->tls_mask |= eind->tls_mask; | |
| 4607 | if (eind->oh != NULL) | |
| 4608 | edir->oh = ppc_follow_link (eind->oh); | |
| 4609 | ||
| 4610 | /* If called to transfer flags for a weakdef during processing | |
| 4611 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
| 4612 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
| 4613 | if (!(ELIMINATE_COPY_RELOCS | |
| 4614 | && eind->elf.root.type != bfd_link_hash_indirect | |
| 4615 | && edir->elf.dynamic_adjusted)) | |
| 4616 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
| 4617 | ||
| 4618 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
| 4619 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
| 4620 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
| 4621 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
| a345bc8d | 4622 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; |
| c79d6685 | 4623 | |
| 411e1bfb | 4624 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
| bbd7ec4a | 4625 | if (eind->dyn_relocs != NULL) |
| 65f38f15 | 4626 | { |
| bbd7ec4a AM |
4627 | if (edir->dyn_relocs != NULL) |
| 4628 | { | |
| 6061a67d AM |
4629 | struct elf_dyn_relocs **pp; |
| 4630 | struct elf_dyn_relocs *p; | |
| bbd7ec4a | 4631 | |
| fcfa13d2 | 4632 | /* Add reloc counts against the indirect sym to the direct sym |
| bbd7ec4a AM |
4633 | list. Merge any entries against the same section. */ |
| 4634 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
| 4635 | { | |
| 6061a67d | 4636 | struct elf_dyn_relocs *q; |
| bbd7ec4a AM |
4637 | |
| 4638 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
| 4639 | if (q->sec == p->sec) | |
| 4640 | { | |
| 4641 | q->pc_count += p->pc_count; | |
| 4642 | q->count += p->count; | |
| 4643 | *pp = p->next; | |
| 4644 | break; | |
| 4645 | } | |
| 4646 | if (q == NULL) | |
| 4647 | pp = &p->next; | |
| 4648 | } | |
| 4649 | *pp = edir->dyn_relocs; | |
| 4650 | } | |
| 4651 | ||
| 65f38f15 AM |
4652 | edir->dyn_relocs = eind->dyn_relocs; |
| 4653 | eind->dyn_relocs = NULL; | |
| 4654 | } | |
| 65f38f15 | 4655 | |
| 68ba6d40 AM |
4656 | /* If we were called to copy over info for a weak sym, that's all. |
| 4657 | You might think dyn_relocs need not be copied over; After all, | |
| 4658 | both syms will be dynamic or both non-dynamic so we're just | |
| 68ffbac6 | 4659 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
| 68ba6d40 AM |
4660 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
| 4661 | dyn_relocs in read-only sections, and it does so on what is the | |
| 4662 | DIR sym here. */ | |
| 4663 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
| 4664 | return; | |
| 4665 | ||
| 81848ca0 AM |
4666 | /* Copy over got entries that we may have already seen to the |
| 4667 | symbol which just became indirect. */ | |
| 411e1bfb AM |
4668 | if (eind->elf.got.glist != NULL) |
| 4669 | { | |
| 4670 | if (edir->elf.got.glist != NULL) | |
| 4671 | { | |
| 4672 | struct got_entry **entp; | |
| 4673 | struct got_entry *ent; | |
| 4674 | ||
| 4675 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
| 4676 | { | |
| 4677 | struct got_entry *dent; | |
| 4678 | ||
| 4679 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
| 4680 | if (dent->addend == ent->addend | |
| e717da7e | 4681 | && dent->owner == ent->owner |
| 411e1bfb AM |
4682 | && dent->tls_type == ent->tls_type) |
| 4683 | { | |
| 4684 | dent->got.refcount += ent->got.refcount; | |
| 4685 | *entp = ent->next; | |
| 4686 | break; | |
| 4687 | } | |
| 4688 | if (dent == NULL) | |
| 4689 | entp = &ent->next; | |
| 4690 | } | |
| 4691 | *entp = edir->elf.got.glist; | |
| 4692 | } | |
| 4693 | ||
| 4694 | edir->elf.got.glist = eind->elf.got.glist; | |
| 4695 | eind->elf.got.glist = NULL; | |
| 4696 | } | |
| 4697 | ||
| 4698 | /* And plt entries. */ | |
| 40d16e0b | 4699 | move_plt_plist (eind, edir); |
| 411e1bfb | 4700 | |
| fcfa13d2 | 4701 | if (eind->elf.dynindx != -1) |
| 411e1bfb | 4702 | { |
| fcfa13d2 AM |
4703 | if (edir->elf.dynindx != -1) |
| 4704 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 4705 | edir->elf.dynstr_index); | |
| 411e1bfb AM |
4706 | edir->elf.dynindx = eind->elf.dynindx; |
| 4707 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
| 4708 | eind->elf.dynindx = -1; | |
| 4709 | eind->elf.dynstr_index = 0; | |
| 4710 | } | |
| 411e1bfb AM |
4711 | } |
| 4712 | ||
| 8387904d AM |
4713 | /* Find the function descriptor hash entry from the given function code |
| 4714 | hash entry FH. Link the entries via their OH fields. */ | |
| 4715 | ||
| 4716 | static struct ppc_link_hash_entry * | |
| b31867b6 | 4717 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
| 8387904d AM |
4718 | { |
| 4719 | struct ppc_link_hash_entry *fdh = fh->oh; | |
| 4720 | ||
| 4721 | if (fdh == NULL) | |
| 4722 | { | |
| 4723 | const char *fd_name = fh->elf.root.root.string + 1; | |
| 4724 | ||
| 4725 | fdh = (struct ppc_link_hash_entry *) | |
| 4726 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
| b31867b6 AM |
4727 | if (fdh == NULL) |
| 4728 | return fdh; | |
| 4729 | ||
| 4730 | fdh->is_func_descriptor = 1; | |
| 4731 | fdh->oh = fh; | |
| 4732 | fh->is_func = 1; | |
| 4733 | fh->oh = fdh; | |
| 8387904d AM |
4734 | } |
| 4735 | ||
| b31867b6 | 4736 | return ppc_follow_link (fdh); |
| 8387904d AM |
4737 | } |
| 4738 | ||
| bb700d78 AM |
4739 | /* Make a fake function descriptor sym for the code sym FH. */ |
| 4740 | ||
| 4741 | static struct ppc_link_hash_entry * | |
| 4742 | make_fdh (struct bfd_link_info *info, | |
| 908b32fc | 4743 | struct ppc_link_hash_entry *fh) |
| bb700d78 AM |
4744 | { |
| 4745 | bfd *abfd; | |
| 4746 | asymbol *newsym; | |
| 4747 | struct bfd_link_hash_entry *bh; | |
| 4748 | struct ppc_link_hash_entry *fdh; | |
| 4749 | ||
| 4750 | abfd = fh->elf.root.u.undef.abfd; | |
| 4751 | newsym = bfd_make_empty_symbol (abfd); | |
| 4752 | newsym->name = fh->elf.root.root.string + 1; | |
| 4753 | newsym->section = bfd_und_section_ptr; | |
| 4754 | newsym->value = 0; | |
| 908b32fc | 4755 | newsym->flags = BSF_WEAK; |
| bb700d78 AM |
4756 | |
| 4757 | bh = NULL; | |
| 4758 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
| 4759 | newsym->flags, newsym->section, | |
| 4760 | newsym->value, NULL, FALSE, FALSE, | |
| 4761 | &bh)) | |
| 4762 | return NULL; | |
| 4763 | ||
| 4764 | fdh = (struct ppc_link_hash_entry *) bh; | |
| 4765 | fdh->elf.non_elf = 0; | |
| 908b32fc AM |
4766 | fdh->fake = 1; |
| 4767 | fdh->is_func_descriptor = 1; | |
| 4768 | fdh->oh = fh; | |
| 4769 | fh->is_func = 1; | |
| 4770 | fh->oh = fdh; | |
| bb700d78 AM |
4771 | return fdh; |
| 4772 | } | |
| 4773 | ||
| 8387904d AM |
4774 | /* Fix function descriptor symbols defined in .opd sections to be |
| 4775 | function type. */ | |
| 555cd476 AM |
4776 | |
| 4777 | static bfd_boolean | |
| c16153ae | 4778 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
| e054468f | 4779 | struct bfd_link_info *info, |
| 555cd476 | 4780 | Elf_Internal_Sym *isym, |
| 6911b7dc | 4781 | const char **name, |
| 555cd476 AM |
4782 | flagword *flags ATTRIBUTE_UNUSED, |
| 4783 | asection **sec, | |
| 4784 | bfd_vma *value ATTRIBUTE_UNUSED) | |
| 4785 | { | |
| f64b2e8d NC |
4786 | if ((ibfd->flags & DYNAMIC) == 0 |
| 4787 | && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
| 4788 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
| 4789 | ||
| e054468f | 4790 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
| c16153ae L |
4791 | { |
| 4792 | if ((ibfd->flags & DYNAMIC) == 0) | |
| f64b2e8d | 4793 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
| c16153ae | 4794 | } |
| e054468f AM |
4795 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) |
| 4796 | ; | |
| 4797 | else if (*sec != NULL | |
| 70cc837d | 4798 | && strcmp ((*sec)->name, ".opd") == 0) |
| 555cd476 | 4799 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
| 433817dd | 4800 | |
| 6911b7dc AM |
4801 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
| 4802 | { | |
| 4803 | if (abiversion (ibfd) == 0) | |
| 4804 | set_abiversion (ibfd, 2); | |
| 4805 | else if (abiversion (ibfd) == 1) | |
| 4806 | { | |
| 4807 | info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other" | |
| 4808 | " for ABI version 1\n"), name); | |
| 4809 | bfd_set_error (bfd_error_bad_value); | |
| 4810 | return FALSE; | |
| 4811 | } | |
| 4812 | } | |
| 4813 | ||
| 555cd476 AM |
4814 | return TRUE; |
| 4815 | } | |
| 4816 | ||
| 6911b7dc AM |
4817 | /* Merge non-visibility st_other attributes: local entry point. */ |
| 4818 | ||
| 4819 | static void | |
| 4820 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
| 4821 | const Elf_Internal_Sym *isym, | |
| 4822 | bfd_boolean definition, | |
| 4823 | bfd_boolean dynamic) | |
| 4824 | { | |
| 4825 | if (definition && !dynamic) | |
| 4826 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) | |
| 4827 | | ELF_ST_VISIBILITY (h->other)); | |
| 4828 | } | |
| 4829 | ||
| 8387904d | 4830 | /* This function makes an old ABI object reference to ".bar" cause the |
| 908b32fc AM |
4831 | inclusion of a new ABI object archive that defines "bar". |
| 4832 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
| 4833 | table that might be satisfied by the archive symbols. */ | |
| 8387904d AM |
4834 | |
| 4835 | static struct elf_link_hash_entry * | |
| 4836 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
| 4837 | struct bfd_link_info *info, | |
| 4838 | const char *name) | |
| 4839 | { | |
| 4840 | struct elf_link_hash_entry *h; | |
| 4841 | char *dot_name; | |
| 4842 | size_t len; | |
| 4843 | ||
| 4844 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
| 908b32fc AM |
4845 | if (h != NULL |
| 4846 | /* Don't return this sym if it is a fake function descriptor | |
| 4847 | created by add_symbol_adjust. */ | |
| 4848 | && !(h->root.type == bfd_link_hash_undefweak | |
| 4849 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
| 8387904d AM |
4850 | return h; |
| 4851 | ||
| 4852 | if (name[0] == '.') | |
| 4853 | return h; | |
| 4854 | ||
| 4855 | len = strlen (name); | |
| 4856 | dot_name = bfd_alloc (abfd, len + 2); | |
| 4857 | if (dot_name == NULL) | |
| 4858 | return (struct elf_link_hash_entry *) 0 - 1; | |
| 4859 | dot_name[0] = '.'; | |
| 4860 | memcpy (dot_name + 1, name, len + 1); | |
| 4861 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
| 4862 | bfd_release (abfd, dot_name); | |
| 4863 | return h; | |
| 4864 | } | |
| 4865 | ||
| 4866 | /* This function satisfies all old ABI object references to ".bar" if a | |
| 99877b66 AM |
4867 | new ABI object defines "bar". Well, at least, undefined dot symbols |
| 4868 | are made weak. This stops later archive searches from including an | |
| 4869 | object if we already have a function descriptor definition. It also | |
| 35b0ce59 AM |
4870 | prevents the linker complaining about undefined symbols. |
| 4871 | We also check and correct mismatched symbol visibility here. The | |
| 4872 | most restrictive visibility of the function descriptor and the | |
| 4873 | function entry symbol is used. */ | |
| 8387904d AM |
4874 | |
| 4875 | static bfd_boolean | |
| b3fac117 | 4876 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
| 8387904d | 4877 | { |
| 8387904d AM |
4878 | struct ppc_link_hash_table *htab; |
| 4879 | struct ppc_link_hash_entry *fdh; | |
| 4880 | ||
| b3fac117 | 4881 | if (eh->elf.root.type == bfd_link_hash_indirect) |
| 8387904d AM |
4882 | return TRUE; |
| 4883 | ||
| b3fac117 AM |
4884 | if (eh->elf.root.type == bfd_link_hash_warning) |
| 4885 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
| 8387904d | 4886 | |
| b3fac117 AM |
4887 | if (eh->elf.root.root.string[0] != '.') |
| 4888 | abort (); | |
| 8387904d | 4889 | |
| b3fac117 | 4890 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
4891 | if (htab == NULL) |
| 4892 | return FALSE; | |
| 4893 | ||
| b31867b6 AM |
4894 | fdh = lookup_fdh (eh, htab); |
| 4895 | if (fdh == NULL) | |
| 4896 | { | |
| 4897 | if (!info->relocatable | |
| 4898 | && (eh->elf.root.type == bfd_link_hash_undefined | |
| 4899 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
| 4900 | && eh->elf.ref_regular) | |
| 4901 | { | |
| 4902 | /* Make an undefweak function descriptor sym, which is enough to | |
| 4903 | pull in an --as-needed shared lib, but won't cause link | |
| 4904 | errors. Archives are handled elsewhere. */ | |
| 4905 | fdh = make_fdh (info, eh); | |
| 4906 | if (fdh == NULL) | |
| 4907 | return FALSE; | |
| 4908 | fdh->elf.ref_regular = 1; | |
| 4909 | } | |
| bb700d78 | 4910 | } |
| b31867b6 | 4911 | else |
| 8387904d | 4912 | { |
| 35b0ce59 AM |
4913 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
| 4914 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
| 4915 | if (entry_vis < descr_vis) | |
| 4916 | fdh->elf.other += entry_vis - descr_vis; | |
| 4917 | else if (entry_vis > descr_vis) | |
| 4918 | eh->elf.other += descr_vis - entry_vis; | |
| 4919 | ||
| e87d886e AM |
4920 | if ((fdh->elf.root.type == bfd_link_hash_defined |
| 4921 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 4922 | && eh->elf.root.type == bfd_link_hash_undefined) | |
| 35b0ce59 AM |
4923 | { |
| 4924 | eh->elf.root.type = bfd_link_hash_undefweak; | |
| 4925 | eh->was_undefined = 1; | |
| 4926 | htab->twiddled_syms = 1; | |
| 4927 | } | |
| 8387904d | 4928 | } |
| 99877b66 | 4929 | |
| 8387904d AM |
4930 | return TRUE; |
| 4931 | } | |
| 4932 | ||
| f6c7c3e8 AM |
4933 | /* Set up opd section info and abiversion for IBFD, and process list |
| 4934 | of dot-symbols we made in link_hash_newfunc. */ | |
| b3fac117 | 4935 | |
| 8387904d | 4936 | static bfd_boolean |
| f6c7c3e8 | 4937 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
| 8387904d | 4938 | { |
| 99877b66 | 4939 | struct ppc_link_hash_table *htab; |
| b3fac117 | 4940 | struct ppc_link_hash_entry **p, *eh; |
| 433817dd | 4941 | |
| 0c8d6e5c | 4942 | if (!is_ppc64_elf (info->output_bfd)) |
| 35b0ce59 | 4943 | return TRUE; |
| 4dfe6ac6 NC |
4944 | htab = ppc_hash_table (info); |
| 4945 | if (htab == NULL) | |
| 4946 | return FALSE; | |
| 35b0ce59 | 4947 | |
| 0c8d6e5c | 4948 | if (is_ppc64_elf (ibfd)) |
| b3fac117 | 4949 | { |
| f6c7c3e8 AM |
4950 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
| 4951 | ||
| 4952 | if (opd != NULL && opd->size != 0) | |
| 4953 | { | |
| 4954 | if (abiversion (ibfd) == 0) | |
| 4955 | set_abiversion (ibfd, 1); | |
| 4956 | else if (abiversion (ibfd) == 2) | |
| 4957 | { | |
| 4958 | info->callbacks->einfo (_("%P: %B .opd not allowed in ABI" | |
| 4959 | " version %d\n"), | |
| 4960 | ibfd, abiversion (ibfd)); | |
| 4961 | bfd_set_error (bfd_error_bad_value); | |
| 4962 | return FALSE; | |
| 4963 | } | |
| 4964 | ||
| 4965 | if ((ibfd->flags & DYNAMIC) == 0 | |
| 4966 | && (opd->flags & SEC_RELOC) != 0 | |
| 4967 | && opd->reloc_count != 0 | |
| 4968 | && !bfd_is_abs_section (opd->output_section)) | |
| 4969 | { | |
| 4970 | /* Garbage collection needs some extra help with .opd sections. | |
| 4971 | We don't want to necessarily keep everything referenced by | |
| 4972 | relocs in .opd, as that would keep all functions. Instead, | |
| 4973 | if we reference an .opd symbol (a function descriptor), we | |
| 4974 | want to keep the function code symbol's section. This is | |
| 4975 | easy for global symbols, but for local syms we need to keep | |
| 4976 | information about the associated function section. */ | |
| 4977 | bfd_size_type amt; | |
| 4978 | asection **opd_sym_map; | |
| 4979 | ||
| 4980 | amt = opd->size * sizeof (*opd_sym_map) / 8; | |
| 4981 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
| 4982 | if (opd_sym_map == NULL) | |
| 4983 | return FALSE; | |
| 4984 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
| 4985 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); | |
| 4986 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
| 4987 | } | |
| 4988 | } | |
| 4989 | ||
| 4990 | /* For input files without an explicit abiversion in e_flags | |
| 4991 | we should have flagged any with symbol st_other bits set | |
| 4992 | as ELFv1 and above flagged those with .opd as ELFv2. | |
| 4993 | Set the output abiversion if not yet set, and for any input | |
| 4994 | still ambiguous, take its abiversion from the output. | |
| 4995 | Differences in ABI are reported later. */ | |
| 4996 | if (abiversion (info->output_bfd) == 0) | |
| 4997 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
| 4998 | else if (abiversion (ibfd) == 0) | |
| 4999 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
| 5000 | ||
| b3fac117 AM |
5001 | p = &htab->dot_syms; |
| 5002 | while ((eh = *p) != NULL) | |
| 5003 | { | |
| 5004 | *p = NULL; | |
| 1c865ab2 AM |
5005 | if (&eh->elf == htab->elf.hgot) |
| 5006 | ; | |
| 5007 | else if (htab->elf.hgot == NULL | |
| 5008 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
| 5009 | htab->elf.hgot = &eh->elf; | |
| 5010 | else if (!add_symbol_adjust (eh, info)) | |
| b3fac117 AM |
5011 | return FALSE; |
| 5012 | p = &eh->u.next_dot_sym; | |
| 5013 | } | |
| 5014 | } | |
| 5015 | ||
| 5016 | /* Clear the list for non-ppc64 input files. */ | |
| 5017 | p = &htab->dot_syms; | |
| 5018 | while ((eh = *p) != NULL) | |
| 5019 | { | |
| 5020 | *p = NULL; | |
| 5021 | p = &eh->u.next_dot_sym; | |
| 5022 | } | |
| 99877b66 AM |
5023 | |
| 5024 | /* We need to fix the undefs list for any syms we have twiddled to | |
| 5025 | undef_weak. */ | |
| 5026 | if (htab->twiddled_syms) | |
| 5027 | { | |
| 77cfaee6 | 5028 | bfd_link_repair_undef_list (&htab->elf.root); |
| 99877b66 AM |
5029 | htab->twiddled_syms = 0; |
| 5030 | } | |
| b3fac117 | 5031 | return TRUE; |
| 8387904d AM |
5032 | } |
| 5033 | ||
| 97fed1c9 JJ |
5034 | /* Undo hash table changes when an --as-needed input file is determined |
| 5035 | not to be needed. */ | |
| 5036 | ||
| 5037 | static bfd_boolean | |
| e5034e59 AM |
5038 | ppc64_elf_notice_as_needed (bfd *ibfd, |
| 5039 | struct bfd_link_info *info, | |
| 5040 | enum notice_asneeded_action act) | |
| 97fed1c9 | 5041 | { |
| e5034e59 AM |
5042 | if (act == notice_not_needed) |
| 5043 | { | |
| 5044 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 4dfe6ac6 | 5045 | |
| e5034e59 AM |
5046 | if (htab == NULL) |
| 5047 | return FALSE; | |
| 4dfe6ac6 | 5048 | |
| e5034e59 AM |
5049 | htab->dot_syms = NULL; |
| 5050 | } | |
| 5051 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
| 97fed1c9 JJ |
5052 | } |
| 5053 | ||
| aa374f67 AM |
5054 | /* If --just-symbols against a final linked binary, then assume we need |
| 5055 | toc adjusting stubs when calling functions defined there. */ | |
| 5056 | ||
| 5057 | static void | |
| 5058 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
| 5059 | { | |
| 5060 | if ((sec->flags & SEC_CODE) != 0 | |
| 5061 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
| 5062 | && is_ppc64_elf (sec->owner)) | |
| 5063 | { | |
| 2c3f079f AM |
5064 | if (abiversion (sec->owner) >= 2 |
| 5065 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
| aa374f67 AM |
5066 | sec->has_toc_reloc = 1; |
| 5067 | } | |
| 5068 | _bfd_elf_link_just_syms (sec, info); | |
| 5069 | } | |
| 5070 | ||
| e054468f | 5071 | static struct plt_entry ** |
| 4ce794b7 AM |
5072 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
| 5073 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
| 411e1bfb AM |
5074 | { |
| 5075 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
| e054468f | 5076 | struct plt_entry **local_plt; |
| f961d9dd | 5077 | unsigned char *local_got_tls_masks; |
| 411e1bfb AM |
5078 | |
| 5079 | if (local_got_ents == NULL) | |
| 5080 | { | |
| 5081 | bfd_size_type size = symtab_hdr->sh_info; | |
| 5082 | ||
| e054468f AM |
5083 | size *= (sizeof (*local_got_ents) |
| 5084 | + sizeof (*local_plt) | |
| 5085 | + sizeof (*local_got_tls_masks)); | |
| 4ce794b7 | 5086 | local_got_ents = bfd_zalloc (abfd, size); |
| 411e1bfb | 5087 | if (local_got_ents == NULL) |
| e054468f | 5088 | return NULL; |
| 411e1bfb AM |
5089 | elf_local_got_ents (abfd) = local_got_ents; |
| 5090 | } | |
| 5091 | ||
| e054468f | 5092 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
| 411e1bfb AM |
5093 | { |
| 5094 | struct got_entry *ent; | |
| 5095 | ||
| 5096 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
| e717da7e AM |
5097 | if (ent->addend == r_addend |
| 5098 | && ent->owner == abfd | |
| 5099 | && ent->tls_type == tls_type) | |
| 411e1bfb AM |
5100 | break; |
| 5101 | if (ent == NULL) | |
| 5102 | { | |
| 5103 | bfd_size_type amt = sizeof (*ent); | |
| 4ce794b7 | 5104 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
5105 | if (ent == NULL) |
| 5106 | return FALSE; | |
| 5107 | ent->next = local_got_ents[r_symndx]; | |
| 5108 | ent->addend = r_addend; | |
| e717da7e | 5109 | ent->owner = abfd; |
| 411e1bfb | 5110 | ent->tls_type = tls_type; |
| 927be08e | 5111 | ent->is_indirect = FALSE; |
| 411e1bfb AM |
5112 | ent->got.refcount = 0; |
| 5113 | local_got_ents[r_symndx] = ent; | |
| 5114 | } | |
| 5115 | ent->got.refcount += 1; | |
| 5116 | } | |
| 5117 | ||
| e054468f | 5118 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
| f961d9dd | 5119 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
| e7b938ca | 5120 | local_got_tls_masks[r_symndx] |= tls_type; |
| e054468f AM |
5121 | |
| 5122 | return local_plt + r_symndx; | |
| 65f38f15 AM |
5123 | } |
| 5124 | ||
| 411e1bfb | 5125 | static bfd_boolean |
| e054468f | 5126 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
| 1e2f5b6e | 5127 | { |
| 411e1bfb | 5128 | struct plt_entry *ent; |
| 1e2f5b6e | 5129 | |
| e054468f | 5130 | for (ent = *plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
5131 | if (ent->addend == addend) |
| 5132 | break; | |
| 5133 | if (ent == NULL) | |
| 1e2f5b6e | 5134 | { |
| 411e1bfb | 5135 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 5136 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
5137 | if (ent == NULL) |
| 5138 | return FALSE; | |
| e054468f | 5139 | ent->next = *plist; |
| 411e1bfb AM |
5140 | ent->addend = addend; |
| 5141 | ent->plt.refcount = 0; | |
| e054468f | 5142 | *plist = ent; |
| 1e2f5b6e | 5143 | } |
| 411e1bfb | 5144 | ent->plt.refcount += 1; |
| b34976b6 | 5145 | return TRUE; |
| 1e2f5b6e AM |
5146 | } |
| 5147 | ||
| e054468f AM |
5148 | static bfd_boolean |
| 5149 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
| 5150 | { | |
| 5151 | return (r_type == R_PPC64_REL24 | |
| 5152 | || r_type == R_PPC64_REL14 | |
| 5153 | || r_type == R_PPC64_REL14_BRTAKEN | |
| 5154 | || r_type == R_PPC64_REL14_BRNTAKEN | |
| 5155 | || r_type == R_PPC64_ADDR24 | |
| 5156 | || r_type == R_PPC64_ADDR14 | |
| 5157 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
| 5158 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
| 5159 | } | |
| 5160 | ||
| 5bd4f169 | 5161 | /* Look through the relocs for a section during the first phase, and |
| 65f38f15 | 5162 | calculate needed space in the global offset table, procedure |
| 5d1634d7 | 5163 | linkage table, and dynamic reloc sections. */ |
| 5bd4f169 | 5164 | |
| b34976b6 | 5165 | static bfd_boolean |
| 4ce794b7 AM |
5166 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 5167 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 5168 | { |
| 65f38f15 | 5169 | struct ppc_link_hash_table *htab; |
| 5bd4f169 | 5170 | Elf_Internal_Shdr *symtab_hdr; |
| c7e2358a | 5171 | struct elf_link_hash_entry **sym_hashes; |
| 5bd4f169 AM |
5172 | const Elf_Internal_Rela *rel; |
| 5173 | const Elf_Internal_Rela *rel_end; | |
| 5bd4f169 | 5174 | asection *sreloc; |
| 1e2f5b6e | 5175 | asection **opd_sym_map; |
| 3a71aa26 | 5176 | struct elf_link_hash_entry *tga, *dottga; |
| 5bd4f169 | 5177 | |
| 1049f94e | 5178 | if (info->relocatable) |
| b34976b6 | 5179 | return TRUE; |
| 5bd4f169 | 5180 | |
| 680a3378 AM |
5181 | /* Don't do anything special with non-loaded, non-alloced sections. |
| 5182 | In particular, any relocs in such sections should not affect GOT | |
| 5183 | and PLT reference counting (ie. we don't allow them to create GOT | |
| 5184 | or PLT entries), there's no possibility or desire to optimize TLS | |
| 5185 | relocs, and there's not much point in propagating relocs to shared | |
| 5186 | libs that the dynamic linker won't relocate. */ | |
| 5187 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 5188 | return TRUE; | |
| 5189 | ||
| 0c8d6e5c | 5190 | BFD_ASSERT (is_ppc64_elf (abfd)); |
| 0ffa91dd | 5191 | |
| 65f38f15 | 5192 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
5193 | if (htab == NULL) |
| 5194 | return FALSE; | |
| 5195 | ||
| 3a71aa26 AM |
5196 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
| 5197 | FALSE, FALSE, TRUE); | |
| 5198 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 5199 | FALSE, FALSE, TRUE); | |
| 0ffa91dd | 5200 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 | 5201 | sym_hashes = elf_sym_hashes (abfd); |
| 5bd4f169 | 5202 | sreloc = NULL; |
| 1e2f5b6e | 5203 | opd_sym_map = NULL; |
| f6c7c3e8 AM |
5204 | if (ppc64_elf_section_data (sec) != NULL |
| 5205 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) | |
| 5206 | opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec; | |
| 5bd4f169 AM |
5207 | |
| 5208 | rel_end = relocs + sec->reloc_count; | |
| 5209 | for (rel = relocs; rel < rel_end; rel++) | |
| 5210 | { | |
| 5211 | unsigned long r_symndx; | |
| 5212 | struct elf_link_hash_entry *h; | |
| 04c9666a | 5213 | enum elf_ppc64_reloc_type r_type; |
| 727fc41e | 5214 | int tls_type; |
| 7c8fe5c4 | 5215 | struct _ppc64_elf_section_data *ppc64_sec; |
| e054468f | 5216 | struct plt_entry **ifunc; |
| 5bd4f169 AM |
5217 | |
| 5218 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 5219 | if (r_symndx < symtab_hdr->sh_info) | |
| 5220 | h = NULL; | |
| 5221 | else | |
| 973a3492 L |
5222 | { |
| 5223 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 5224 | h = elf_follow_link (h); |
| 81fbe831 AM |
5225 | |
| 5226 | /* PR15323, ref flags aren't set for references in the same | |
| 5227 | object. */ | |
| 5228 | h->root.non_ir_ref = 1; | |
| 1c865ab2 AM |
5229 | |
| 5230 | if (h == htab->elf.hgot) | |
| 5231 | sec->has_toc_reloc = 1; | |
| 973a3492 | 5232 | } |
| 5bd4f169 | 5233 | |
| 727fc41e | 5234 | tls_type = 0; |
| e054468f | 5235 | ifunc = NULL; |
| 25f23106 AM |
5236 | if (h != NULL) |
| 5237 | { | |
| 5238 | if (h->type == STT_GNU_IFUNC) | |
| 5239 | { | |
| 5240 | h->needs_plt = 1; | |
| 5241 | ifunc = &h->plt.plist; | |
| 5242 | } | |
| 5243 | } | |
| 5244 | else | |
| 5245 | { | |
| 5246 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 5247 | abfd, r_symndx); | |
| 5248 | if (isym == NULL) | |
| 5249 | return FALSE; | |
| 5250 | ||
| 5251 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
| 5252 | { | |
| 5253 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5254 | rel->r_addend, PLT_IFUNC); | |
| 5255 | if (ifunc == NULL) | |
| 5256 | return FALSE; | |
| 5257 | } | |
| 5258 | } | |
| 4ce794b7 | 5259 | r_type = ELF64_R_TYPE (rel->r_info); |
| e054468f AM |
5260 | if (is_branch_reloc (r_type)) |
| 5261 | { | |
| 5262 | if (h != NULL && (h == tga || h == dottga)) | |
| 5263 | { | |
| 5264 | if (rel != relocs | |
| 5265 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
| 5266 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
| 5267 | /* We have a new-style __tls_get_addr call with a marker | |
| 5268 | reloc. */ | |
| 5269 | ; | |
| 5270 | else | |
| 5271 | /* Mark this section as having an old-style call. */ | |
| 5272 | sec->has_tls_get_addr_call = 1; | |
| 5273 | } | |
| 727fc41e | 5274 | |
| e054468f | 5275 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
| e054468f AM |
5276 | if (ifunc != NULL |
| 5277 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
| 5278 | return FALSE; | |
| 5279 | } | |
| 727fc41e | 5280 | |
| a33d1f77 | 5281 | switch (r_type) |
| 5bd4f169 | 5282 | { |
| 727fc41e AM |
5283 | case R_PPC64_TLSGD: |
| 5284 | case R_PPC64_TLSLD: | |
| 5285 | /* These special tls relocs tie a call to __tls_get_addr with | |
| 5286 | its parameter symbol. */ | |
| 5287 | break; | |
| 5288 | ||
| 411e1bfb AM |
5289 | case R_PPC64_GOT_TLSLD16: |
| 5290 | case R_PPC64_GOT_TLSLD16_LO: | |
| 5291 | case R_PPC64_GOT_TLSLD16_HI: | |
| 5292 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 5293 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5294 | goto dogottls; |
| 5295 | ||
| 5296 | case R_PPC64_GOT_TLSGD16: | |
| 5297 | case R_PPC64_GOT_TLSGD16_LO: | |
| 5298 | case R_PPC64_GOT_TLSGD16_HI: | |
| 5299 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 5300 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
5301 | goto dogottls; |
| 5302 | ||
| 5303 | case R_PPC64_GOT_TPREL16_DS: | |
| 5304 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 5305 | case R_PPC64_GOT_TPREL16_HI: | |
| 5306 | case R_PPC64_GOT_TPREL16_HA: | |
| 1d483afe | 5307 | if (!info->executable) |
| 411e1bfb AM |
5308 | info->flags |= DF_STATIC_TLS; |
| 5309 | tls_type = TLS_TLS | TLS_TPREL; | |
| 5310 | goto dogottls; | |
| 5311 | ||
| 5312 | case R_PPC64_GOT_DTPREL16_DS: | |
| 5313 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 5314 | case R_PPC64_GOT_DTPREL16_HI: | |
| 5315 | case R_PPC64_GOT_DTPREL16_HA: | |
| 5316 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 5317 | dogottls: | |
| 5318 | sec->has_tls_reloc = 1; | |
| 5319 | /* Fall thru */ | |
| 5320 | ||
| 5bd4f169 | 5321 | case R_PPC64_GOT16: |
| 5bd4f169 | 5322 | case R_PPC64_GOT16_DS: |
| 65f38f15 AM |
5323 | case R_PPC64_GOT16_HA: |
| 5324 | case R_PPC64_GOT16_HI: | |
| 5325 | case R_PPC64_GOT16_LO: | |
| 5bd4f169 | 5326 | case R_PPC64_GOT16_LO_DS: |
| 65f38f15 | 5327 | /* This symbol requires a global offset table entry. */ |
| 4c52953f | 5328 | sec->has_toc_reloc = 1; |
| 33c0ec9d AM |
5329 | if (r_type == R_PPC64_GOT_TLSLD16 |
| 5330 | || r_type == R_PPC64_GOT_TLSGD16 | |
| 5331 | || r_type == R_PPC64_GOT_TPREL16_DS | |
| 5332 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
| 5333 | || r_type == R_PPC64_GOT16 | |
| 5334 | || r_type == R_PPC64_GOT16_DS) | |
| 5335 | { | |
| 5336 | htab->do_multi_toc = 1; | |
| d77c8a4b | 5337 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
| 33c0ec9d AM |
5338 | } |
| 5339 | ||
| e717da7e AM |
5340 | if (ppc64_elf_tdata (abfd)->got == NULL |
| 5341 | && !create_got_section (abfd, info)) | |
| b34976b6 | 5342 | return FALSE; |
| 5bd4f169 AM |
5343 | |
| 5344 | if (h != NULL) | |
| 5345 | { | |
| 411e1bfb AM |
5346 | struct ppc_link_hash_entry *eh; |
| 5347 | struct got_entry *ent; | |
| 65f38f15 | 5348 | |
| 411e1bfb AM |
5349 | eh = (struct ppc_link_hash_entry *) h; |
| 5350 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
| 5351 | if (ent->addend == rel->r_addend | |
| e717da7e | 5352 | && ent->owner == abfd |
| 411e1bfb AM |
5353 | && ent->tls_type == tls_type) |
| 5354 | break; | |
| 5355 | if (ent == NULL) | |
| 5bd4f169 | 5356 | { |
| 411e1bfb | 5357 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 5358 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb | 5359 | if (ent == NULL) |
| b34976b6 | 5360 | return FALSE; |
| 411e1bfb AM |
5361 | ent->next = eh->elf.got.glist; |
| 5362 | ent->addend = rel->r_addend; | |
| e717da7e | 5363 | ent->owner = abfd; |
| 411e1bfb | 5364 | ent->tls_type = tls_type; |
| 927be08e | 5365 | ent->is_indirect = FALSE; |
| 411e1bfb AM |
5366 | ent->got.refcount = 0; |
| 5367 | eh->elf.got.glist = ent; | |
| 5bd4f169 | 5368 | } |
| 411e1bfb | 5369 | ent->got.refcount += 1; |
| e7b938ca | 5370 | eh->tls_mask |= tls_type; |
| 5bd4f169 | 5371 | } |
| 411e1bfb AM |
5372 | else |
| 5373 | /* This is a global offset table entry for a local symbol. */ | |
| 5374 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5375 | rel->r_addend, tls_type)) | |
| 5376 | return FALSE; | |
| a345bc8d AM |
5377 | |
| 5378 | /* We may also need a plt entry if the symbol turns out to be | |
| 5379 | an ifunc. */ | |
| f6c7c3e8 | 5380 | if (h != NULL && !info->shared && abiversion (abfd) != 1) |
| a345bc8d AM |
5381 | { |
| 5382 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
| 5383 | return FALSE; | |
| 5384 | } | |
| 5bd4f169 AM |
5385 | break; |
| 5386 | ||
| 5bd4f169 | 5387 | case R_PPC64_PLT16_HA: |
| 65f38f15 AM |
5388 | case R_PPC64_PLT16_HI: |
| 5389 | case R_PPC64_PLT16_LO: | |
| 5390 | case R_PPC64_PLT32: | |
| 5391 | case R_PPC64_PLT64: | |
| 5bd4f169 | 5392 | /* This symbol requires a procedure linkage table entry. We |
| 3fad3c7c AM |
5393 | actually build the entry in adjust_dynamic_symbol, |
| 5394 | because this might be a case of linking PIC code without | |
| 5395 | linking in any dynamic objects, in which case we don't | |
| 5396 | need to generate a procedure linkage table after all. */ | |
| 5bd4f169 AM |
5397 | if (h == NULL) |
| 5398 | { | |
| 5399 | /* It does not make sense to have a procedure linkage | |
| 3fad3c7c | 5400 | table entry for a local symbol. */ |
| 5bd4f169 | 5401 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 5402 | return FALSE; |
| 5bd4f169 | 5403 | } |
| 411e1bfb | 5404 | else |
| e054468f AM |
5405 | { |
| 5406 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
| 5407 | return FALSE; | |
| 5408 | h->needs_plt = 1; | |
| 5409 | if (h->root.root.string[0] == '.' | |
| 5410 | && h->root.root.string[1] != '\0') | |
| 5411 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 5412 | } | |
| 5bd4f169 AM |
5413 | break; |
| 5414 | ||
| 5415 | /* The following relocations don't need to propagate the | |
| 5416 | relocation if linking a shared object since they are | |
| 5417 | section relative. */ | |
| 5418 | case R_PPC64_SECTOFF: | |
| 5419 | case R_PPC64_SECTOFF_LO: | |
| 5420 | case R_PPC64_SECTOFF_HI: | |
| 5421 | case R_PPC64_SECTOFF_HA: | |
| 5422 | case R_PPC64_SECTOFF_DS: | |
| 5423 | case R_PPC64_SECTOFF_LO_DS: | |
| 411e1bfb AM |
5424 | case R_PPC64_DTPREL16: |
| 5425 | case R_PPC64_DTPREL16_LO: | |
| 5426 | case R_PPC64_DTPREL16_HI: | |
| 5427 | case R_PPC64_DTPREL16_HA: | |
| 5428 | case R_PPC64_DTPREL16_DS: | |
| 5429 | case R_PPC64_DTPREL16_LO_DS: | |
| f9c6b907 AM |
5430 | case R_PPC64_DTPREL16_HIGH: |
| 5431 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb AM |
5432 | case R_PPC64_DTPREL16_HIGHER: |
| 5433 | case R_PPC64_DTPREL16_HIGHERA: | |
| 5434 | case R_PPC64_DTPREL16_HIGHEST: | |
| 5435 | case R_PPC64_DTPREL16_HIGHESTA: | |
| 5bd4f169 AM |
5436 | break; |
| 5437 | ||
| ad8e1ba5 | 5438 | /* Nor do these. */ |
| 25f23106 AM |
5439 | case R_PPC64_REL16: |
| 5440 | case R_PPC64_REL16_LO: | |
| 5441 | case R_PPC64_REL16_HI: | |
| 5442 | case R_PPC64_REL16_HA: | |
| 5443 | break; | |
| 5444 | ||
| 45965137 AM |
5445 | /* Not supported as a dynamic relocation. */ |
| 5446 | case R_PPC64_ADDR64_LOCAL: | |
| 5447 | if (info->shared) | |
| 5448 | { | |
| 5449 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
| 5450 | ppc_howto_init (); | |
| 5451 | info->callbacks->einfo (_("%P: %H: %s reloc unsupported " | |
| 5452 | "in shared libraries and PIEs.\n"), | |
| 5453 | abfd, sec, rel->r_offset, | |
| 5454 | ppc64_elf_howto_table[r_type]->name); | |
| 5455 | bfd_set_error (bfd_error_bad_value); | |
| 5456 | return FALSE; | |
| 5457 | } | |
| 5458 | break; | |
| 5459 | ||
| ad8e1ba5 | 5460 | case R_PPC64_TOC16: |
| 33c0ec9d AM |
5461 | case R_PPC64_TOC16_DS: |
| 5462 | htab->do_multi_toc = 1; | |
| d77c8a4b | 5463 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
| ad8e1ba5 AM |
5464 | case R_PPC64_TOC16_LO: |
| 5465 | case R_PPC64_TOC16_HI: | |
| 5466 | case R_PPC64_TOC16_HA: | |
| ad8e1ba5 | 5467 | case R_PPC64_TOC16_LO_DS: |
| 4c52953f | 5468 | sec->has_toc_reloc = 1; |
| ad8e1ba5 AM |
5469 | break; |
| 5470 | ||
| 5bd4f169 AM |
5471 | /* This relocation describes the C++ object vtable hierarchy. |
| 5472 | Reconstruct it for later use during GC. */ | |
| 5473 | case R_PPC64_GNU_VTINHERIT: | |
| c152c796 | 5474 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| b34976b6 | 5475 | return FALSE; |
| 5bd4f169 AM |
5476 | break; |
| 5477 | ||
| 5478 | /* This relocation describes which C++ vtable entries are actually | |
| 5479 | used. Record for later use during GC. */ | |
| 5480 | case R_PPC64_GNU_VTENTRY: | |
| d17e0c6e JB |
5481 | BFD_ASSERT (h != NULL); |
| 5482 | if (h != NULL | |
| 5483 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
| b34976b6 | 5484 | return FALSE; |
| 5bd4f169 AM |
5485 | break; |
| 5486 | ||
| 721956f4 AM |
5487 | case R_PPC64_REL14: |
| 5488 | case R_PPC64_REL14_BRTAKEN: | |
| 5489 | case R_PPC64_REL14_BRNTAKEN: | |
| 220c76dd AM |
5490 | { |
| 5491 | asection *dest = NULL; | |
| 5492 | ||
| 5493 | /* Heuristic: If jumping outside our section, chances are | |
| 5494 | we are going to need a stub. */ | |
| 5495 | if (h != NULL) | |
| 5496 | { | |
| 5497 | /* If the sym is weak it may be overridden later, so | |
| 5498 | don't assume we know where a weak sym lives. */ | |
| 5499 | if (h->root.type == bfd_link_hash_defined) | |
| 5500 | dest = h->root.u.def.section; | |
| 5501 | } | |
| 5502 | else | |
| 87d72d41 AM |
5503 | { |
| 5504 | Elf_Internal_Sym *isym; | |
| 5505 | ||
| 5506 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 5507 | abfd, r_symndx); | |
| 5508 | if (isym == NULL) | |
| 5509 | return FALSE; | |
| 5510 | ||
| 5511 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5512 | } | |
| 5513 | ||
| 220c76dd | 5514 | if (dest != sec) |
| 7c8fe5c4 | 5515 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
| 220c76dd | 5516 | } |
| 721956f4 AM |
5517 | /* Fall through. */ |
| 5518 | ||
| 5d1634d7 | 5519 | case R_PPC64_REL24: |
| e054468f | 5520 | if (h != NULL && ifunc == NULL) |
| 5d1634d7 AM |
5521 | { |
| 5522 | /* We may need a .plt entry if the function this reloc | |
| 5523 | refers to is in a shared lib. */ | |
| e054468f | 5524 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
| 411e1bfb | 5525 | return FALSE; |
| e054468f AM |
5526 | h->needs_plt = 1; |
| 5527 | if (h->root.root.string[0] == '.' | |
| 5528 | && h->root.root.string[1] != '\0') | |
| 5529 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 3a71aa26 | 5530 | if (h == tga || h == dottga) |
| 411e1bfb | 5531 | sec->has_tls_reloc = 1; |
| 411e1bfb AM |
5532 | } |
| 5533 | break; | |
| 5534 | ||
| 5535 | case R_PPC64_TPREL64: | |
| 5536 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
| 1d483afe | 5537 | if (!info->executable) |
| 411e1bfb AM |
5538 | info->flags |= DF_STATIC_TLS; |
| 5539 | goto dotlstoc; | |
| 5540 | ||
| 5541 | case R_PPC64_DTPMOD64: | |
| 5542 | if (rel + 1 < rel_end | |
| 5543 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 5544 | && rel[1].r_offset == rel->r_offset + 8) | |
| 951fd09b | 5545 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
| 411e1bfb | 5546 | else |
| 951fd09b | 5547 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5548 | goto dotlstoc; |
| 5549 | ||
| 5550 | case R_PPC64_DTPREL64: | |
| 5551 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
| 5552 | if (rel != relocs | |
| 5553 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
| 5554 | && rel[-1].r_offset == rel->r_offset - 8) | |
| 5555 | /* This is the second reloc of a dtpmod, dtprel pair. | |
| 5556 | Don't mark with TLS_DTPREL. */ | |
| 5557 | goto dodyn; | |
| 5558 | ||
| 5559 | dotlstoc: | |
| 5560 | sec->has_tls_reloc = 1; | |
| 5561 | if (h != NULL) | |
| 5562 | { | |
| 5563 | struct ppc_link_hash_entry *eh; | |
| 5564 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 5565 | eh->tls_mask |= tls_type; |
| 411e1bfb AM |
5566 | } |
| 5567 | else | |
| 5568 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5569 | rel->r_addend, tls_type)) | |
| 5570 | return FALSE; | |
| 5571 | ||
| 7c8fe5c4 AM |
5572 | ppc64_sec = ppc64_elf_section_data (sec); |
| 5573 | if (ppc64_sec->sec_type != sec_toc) | |
| 411e1bfb | 5574 | { |
| 3a71aa26 AM |
5575 | bfd_size_type amt; |
| 5576 | ||
| e7b938ca | 5577 | /* One extra to simplify get_tls_mask. */ |
| 3a71aa26 AM |
5578 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
| 5579 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
| 5580 | if (ppc64_sec->u.toc.symndx == NULL) | |
| 5581 | return FALSE; | |
| 5582 | amt = sec->size * sizeof (bfd_vma) / 8; | |
| 5583 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
| 5584 | if (ppc64_sec->u.toc.add == NULL) | |
| 411e1bfb | 5585 | return FALSE; |
| 7c8fe5c4 AM |
5586 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
| 5587 | ppc64_sec->sec_type = sec_toc; | |
| 411e1bfb AM |
5588 | } |
| 5589 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
| 3a71aa26 AM |
5590 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
| 5591 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
| 951fd09b AM |
5592 | |
| 5593 | /* Mark the second slot of a GD or LD entry. | |
| 5594 | -1 to indicate GD and -2 to indicate LD. */ | |
| 5595 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
| 3a71aa26 | 5596 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
| 951fd09b | 5597 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
| 3a71aa26 | 5598 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
| 411e1bfb AM |
5599 | goto dodyn; |
| 5600 | ||
| 5601 | case R_PPC64_TPREL16: | |
| 5602 | case R_PPC64_TPREL16_LO: | |
| 5603 | case R_PPC64_TPREL16_HI: | |
| 5604 | case R_PPC64_TPREL16_HA: | |
| 5605 | case R_PPC64_TPREL16_DS: | |
| 5606 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
5607 | case R_PPC64_TPREL16_HIGH: |
| 5608 | case R_PPC64_TPREL16_HIGHA: | |
| 411e1bfb AM |
5609 | case R_PPC64_TPREL16_HIGHER: |
| 5610 | case R_PPC64_TPREL16_HIGHERA: | |
| 5611 | case R_PPC64_TPREL16_HIGHEST: | |
| 5612 | case R_PPC64_TPREL16_HIGHESTA: | |
| 5613 | if (info->shared) | |
| 5614 | { | |
| 1d483afe AM |
5615 | if (!info->executable) |
| 5616 | info->flags |= DF_STATIC_TLS; | |
| 411e1bfb | 5617 | goto dodyn; |
| 5d1634d7 AM |
5618 | } |
| 5619 | break; | |
| 5620 | ||
| e86ce104 | 5621 | case R_PPC64_ADDR64: |
| 1e2f5b6e | 5622 | if (opd_sym_map != NULL |
| 1e2f5b6e | 5623 | && rel + 1 < rel_end |
| 4ce794b7 | 5624 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
| 1e2f5b6e | 5625 | { |
| 8387904d AM |
5626 | if (h != NULL) |
| 5627 | { | |
| 5628 | if (h->root.root.string[0] == '.' | |
| 5629 | && h->root.root.string[1] != 0 | |
| b31867b6 | 5630 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
| 8387904d AM |
5631 | ; |
| 5632 | else | |
| 5633 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 5634 | } | |
| 5635 | else | |
| 5636 | { | |
| 5637 | asection *s; | |
| 87d72d41 | 5638 | Elf_Internal_Sym *isym; |
| 1e2f5b6e | 5639 | |
| 87d72d41 AM |
5640 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5641 | abfd, r_symndx); | |
| 5642 | if (isym == NULL) | |
| 8387904d | 5643 | return FALSE; |
| 87d72d41 AM |
5644 | |
| 5645 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5646 | if (s != NULL && s != sec) | |
| 3f764659 | 5647 | opd_sym_map[rel->r_offset / 8] = s; |
| 8387904d | 5648 | } |
| 1e2f5b6e | 5649 | } |
| e86ce104 AM |
5650 | /* Fall through. */ |
| 5651 | ||
| 65f38f15 AM |
5652 | case R_PPC64_ADDR16: |
| 5653 | case R_PPC64_ADDR16_DS: | |
| 5654 | case R_PPC64_ADDR16_HA: | |
| 5655 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
5656 | case R_PPC64_ADDR16_HIGH: |
| 5657 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
5658 | case R_PPC64_ADDR16_HIGHER: |
| 5659 | case R_PPC64_ADDR16_HIGHERA: | |
| 5660 | case R_PPC64_ADDR16_HIGHEST: | |
| 5661 | case R_PPC64_ADDR16_HIGHESTA: | |
| 5662 | case R_PPC64_ADDR16_LO: | |
| 5663 | case R_PPC64_ADDR16_LO_DS: | |
| f6c7c3e8 | 5664 | if (h != NULL && !info->shared && abiversion (abfd) != 1 |
| a345bc8d AM |
5665 | && rel->r_addend == 0) |
| 5666 | { | |
| 5667 | /* We may need a .plt entry if this reloc refers to a | |
| 5668 | function in a shared lib. */ | |
| 5669 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
| 5670 | return FALSE; | |
| 5671 | h->pointer_equality_needed = 1; | |
| 5672 | } | |
| 5673 | /* Fall through. */ | |
| 5674 | ||
| 5675 | case R_PPC64_REL30: | |
| 5676 | case R_PPC64_REL32: | |
| 5677 | case R_PPC64_REL64: | |
| 5678 | case R_PPC64_ADDR14: | |
| 5679 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 5680 | case R_PPC64_ADDR14_BRTAKEN: | |
| 65f38f15 | 5681 | case R_PPC64_ADDR24: |
| 65f38f15 | 5682 | case R_PPC64_ADDR32: |
| 65f38f15 AM |
5683 | case R_PPC64_UADDR16: |
| 5684 | case R_PPC64_UADDR32: | |
| 5685 | case R_PPC64_UADDR64: | |
| 5bd4f169 | 5686 | case R_PPC64_TOC: |
| 81848ca0 AM |
5687 | if (h != NULL && !info->shared) |
| 5688 | /* We may need a copy reloc. */ | |
| f5385ebf | 5689 | h->non_got_ref = 1; |
| 81848ca0 | 5690 | |
| 41bd81ab | 5691 | /* Don't propagate .opd relocs. */ |
| 1e2f5b6e | 5692 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
| e86ce104 | 5693 | break; |
| e86ce104 | 5694 | |
| 65f38f15 AM |
5695 | /* If we are creating a shared library, and this is a reloc |
| 5696 | against a global symbol, or a non PC relative reloc | |
| 5697 | against a local symbol, then we need to copy the reloc | |
| 5698 | into the shared library. However, if we are linking with | |
| 5699 | -Bsymbolic, we do not need to copy a reloc against a | |
| 5700 | global symbol which is defined in an object we are | |
| 5701 | including in the link (i.e., DEF_REGULAR is set). At | |
| 5702 | this point we have not seen all the input files, so it is | |
| 5703 | possible that DEF_REGULAR is not set now but will be set | |
| 5704 | later (it is never cleared). In case of a weak definition, | |
| 5705 | DEF_REGULAR may be cleared later by a strong definition in | |
| 5706 | a shared library. We account for that possibility below by | |
| f4656909 | 5707 | storing information in the dyn_relocs field of the hash |
| 65f38f15 AM |
5708 | table entry. A similar situation occurs when creating |
| 5709 | shared libraries and symbol visibility changes render the | |
| 5710 | symbol local. | |
| 5711 | ||
| 5712 | If on the other hand, we are creating an executable, we | |
| 5713 | may need to keep relocations for symbols satisfied by a | |
| 5714 | dynamic library if we manage to avoid copy relocs for the | |
| 5715 | symbol. */ | |
| 411e1bfb | 5716 | dodyn: |
| 65f38f15 | 5717 | if ((info->shared |
| 1d483afe | 5718 | && (must_be_dyn_reloc (info, r_type) |
| 65f38f15 | 5719 | || (h != NULL |
| 198f1157 | 5720 | && (!SYMBOLIC_BIND (info, h) |
| 65f38f15 | 5721 | || h->root.type == bfd_link_hash_defweak |
| f5385ebf | 5722 | || !h->def_regular)))) |
| f4656909 AM |
5723 | || (ELIMINATE_COPY_RELOCS |
| 5724 | && !info->shared | |
| 65f38f15 AM |
5725 | && h != NULL |
| 5726 | && (h->root.type == bfd_link_hash_defweak | |
| 25f23106 AM |
5727 | || !h->def_regular)) |
| 5728 | || (!info->shared | |
| 5729 | && ifunc != NULL)) | |
| 5bd4f169 | 5730 | { |
| 65f38f15 AM |
5731 | /* We must copy these reloc types into the output file. |
| 5732 | Create a reloc section in dynobj and make room for | |
| 5733 | this reloc. */ | |
| 5bd4f169 AM |
5734 | if (sreloc == NULL) |
| 5735 | { | |
| 83bac4b0 NC |
5736 | sreloc = _bfd_elf_make_dynamic_reloc_section |
| 5737 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
| 65f38f15 | 5738 | |
| 5bd4f169 | 5739 | if (sreloc == NULL) |
| 83bac4b0 | 5740 | return FALSE; |
| 5bd4f169 AM |
5741 | } |
| 5742 | ||
| 65f38f15 AM |
5743 | /* If this is a global symbol, we count the number of |
| 5744 | relocations we need for this symbol. */ | |
| 5745 | if (h != NULL) | |
| 5746 | { | |
| 19e08130 AM |
5747 | struct elf_dyn_relocs *p; |
| 5748 | struct elf_dyn_relocs **head; | |
| 5749 | ||
| ec338859 | 5750 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
| 19e08130 AM |
5751 | p = *head; |
| 5752 | if (p == NULL || p->sec != sec) | |
| 5753 | { | |
| 5754 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
| 5755 | if (p == NULL) | |
| 5756 | return FALSE; | |
| 5757 | p->next = *head; | |
| 5758 | *head = p; | |
| 5759 | p->sec = sec; | |
| 5760 | p->count = 0; | |
| 5761 | p->pc_count = 0; | |
| 5762 | } | |
| 5763 | p->count += 1; | |
| 5764 | if (!must_be_dyn_reloc (info, r_type)) | |
| 5765 | p->pc_count += 1; | |
| 65f38f15 AM |
5766 | } |
| 5767 | else | |
| 5768 | { | |
| ec338859 AM |
5769 | /* Track dynamic relocs needed for local syms too. |
| 5770 | We really need local syms available to do this | |
| 5771 | easily. Oh well. */ | |
| 19e08130 AM |
5772 | struct ppc_dyn_relocs *p; |
| 5773 | struct ppc_dyn_relocs **head; | |
| 5774 | bfd_boolean is_ifunc; | |
| ec338859 | 5775 | asection *s; |
| 6edfbbad | 5776 | void *vpp; |
| 87d72d41 | 5777 | Elf_Internal_Sym *isym; |
| 6edfbbad | 5778 | |
| 87d72d41 AM |
5779 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5780 | abfd, r_symndx); | |
| 5781 | if (isym == NULL) | |
| b34976b6 | 5782 | return FALSE; |
| ec338859 | 5783 | |
| 87d72d41 AM |
5784 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 5785 | if (s == NULL) | |
| 5786 | s = sec; | |
| 5787 | ||
| 6edfbbad | 5788 | vpp = &elf_section_data (s)->local_dynrel; |
| 19e08130 AM |
5789 | head = (struct ppc_dyn_relocs **) vpp; |
| 5790 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
| 5791 | p = *head; | |
| 5792 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
| 5793 | p = p->next; | |
| 5794 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
| 5795 | { | |
| 5796 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
| 5797 | if (p == NULL) | |
| 5798 | return FALSE; | |
| 5799 | p->next = *head; | |
| 5800 | *head = p; | |
| 5801 | p->sec = sec; | |
| 5802 | p->ifunc = is_ifunc; | |
| 5803 | p->count = 0; | |
| 5804 | } | |
| 5805 | p->count += 1; | |
| ec338859 | 5806 | } |
| 65f38f15 | 5807 | } |
| 5bd4f169 | 5808 | break; |
| 65f38f15 AM |
5809 | |
| 5810 | default: | |
| 96e0dda4 | 5811 | break; |
| 5bd4f169 AM |
5812 | } |
| 5813 | } | |
| 5814 | ||
| b34976b6 | 5815 | return TRUE; |
| 5bd4f169 AM |
5816 | } |
| 5817 | ||
| ee67d69a AM |
5818 | /* Merge backend specific data from an object file to the output |
| 5819 | object file when linking. */ | |
| 5820 | ||
| 5821 | static bfd_boolean | |
| 5822 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
| 5823 | { | |
| 5824 | unsigned long iflags, oflags; | |
| 5825 | ||
| 5826 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
| 5827 | return TRUE; | |
| 5828 | ||
| 5829 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
| 5830 | return TRUE; | |
| 5831 | ||
| 5832 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
| 5833 | return FALSE; | |
| 5834 | ||
| 5835 | iflags = elf_elfheader (ibfd)->e_flags; | |
| 5836 | oflags = elf_elfheader (obfd)->e_flags; | |
| 5837 | ||
| f6c7c3e8 | 5838 | if (iflags & ~EF_PPC64_ABI) |
| ee67d69a AM |
5839 | { |
| 5840 | (*_bfd_error_handler) | |
| 5841 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); | |
| 5842 | bfd_set_error (bfd_error_bad_value); | |
| 5843 | return FALSE; | |
| 5844 | } | |
| f6c7c3e8 | 5845 | else if (iflags != oflags && iflags != 0) |
| ee67d69a AM |
5846 | { |
| 5847 | (*_bfd_error_handler) | |
| 5848 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), | |
| 5849 | ibfd, iflags, oflags); | |
| 5850 | bfd_set_error (bfd_error_bad_value); | |
| 5851 | return FALSE; | |
| 5852 | } | |
| 5853 | ||
| 5854 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
| 5855 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
| 5856 | ||
| 5857 | return TRUE; | |
| 5858 | } | |
| 5859 | ||
| 5860 | static bfd_boolean | |
| 5861 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
| 5862 | { | |
| 5863 | /* Print normal ELF private data. */ | |
| 5864 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
| 5865 | ||
| 5866 | if (elf_elfheader (abfd)->e_flags != 0) | |
| 5867 | { | |
| 5868 | FILE *file = ptr; | |
| 5869 | ||
| 5870 | /* xgettext:c-format */ | |
| 5871 | fprintf (file, _("private flags = 0x%lx:"), | |
| 5872 | elf_elfheader (abfd)->e_flags); | |
| 5873 | ||
| 5874 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
| 5875 | fprintf (file, _(" [abiv%ld]"), | |
| 5876 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
| 5877 | fputc ('\n', file); | |
| 5878 | } | |
| 5879 | ||
| 5880 | return TRUE; | |
| 5881 | } | |
| 5882 | ||
| 8387904d AM |
5883 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
| 5884 | of the code entry point, and its section. */ | |
| 5885 | ||
| 5886 | static bfd_vma | |
| 5887 | opd_entry_value (asection *opd_sec, | |
| 5888 | bfd_vma offset, | |
| 5889 | asection **code_sec, | |
| aef36ac1 AM |
5890 | bfd_vma *code_off, |
| 5891 | bfd_boolean in_code_sec) | |
| 8387904d AM |
5892 | { |
| 5893 | bfd *opd_bfd = opd_sec->owner; | |
| 8860955f | 5894 | Elf_Internal_Rela *relocs; |
| 8387904d | 5895 | Elf_Internal_Rela *lo, *hi, *look; |
| 645ea6a9 | 5896 | bfd_vma val; |
| 8387904d | 5897 | |
| 9f296da3 AM |
5898 | /* No relocs implies we are linking a --just-symbols object, or looking |
| 5899 | at a final linked executable with addr2line or somesuch. */ | |
| 4b85d634 AM |
5900 | if (opd_sec->reloc_count == 0) |
| 5901 | { | |
| 729eabd5 | 5902 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
| 3b36f7e6 | 5903 | |
| 729eabd5 AM |
5904 | if (contents == NULL) |
| 5905 | { | |
| 5906 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
| 5907 | return (bfd_vma) -1; | |
| 5908 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
| 5909 | } | |
| ee1e4ede | 5910 | |
| 729eabd5 | 5911 | val = bfd_get_64 (opd_bfd, contents + offset); |
| aef36ac1 AM |
5912 | if (code_sec != NULL) |
| 5913 | { | |
| 5914 | asection *sec, *likely = NULL; | |
| ee1e4ede | 5915 | |
| aef36ac1 | 5916 | if (in_code_sec) |
| 4b85d634 | 5917 | { |
| aef36ac1 AM |
5918 | sec = *code_sec; |
| 5919 | if (sec->vma <= val | |
| 5920 | && val < sec->vma + sec->size) | |
| 5921 | likely = sec; | |
| 5922 | else | |
| 5923 | val = -1; | |
| 5924 | } | |
| 5925 | else | |
| 5926 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
| 5927 | if (sec->vma <= val | |
| 5928 | && (sec->flags & SEC_LOAD) != 0 | |
| 5929 | && (sec->flags & SEC_ALLOC) != 0) | |
| 5930 | likely = sec; | |
| 5931 | if (likely != NULL) | |
| 5932 | { | |
| 5933 | *code_sec = likely; | |
| 5934 | if (code_off != NULL) | |
| 5935 | *code_off = val - likely->vma; | |
| 4b85d634 AM |
5936 | } |
| 5937 | } | |
| aef36ac1 | 5938 | return val; |
| 4b85d634 AM |
5939 | } |
| 5940 | ||
| 0c8d6e5c | 5941 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
| 0ffa91dd | 5942 | |
| 729eabd5 | 5943 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
| 8860955f AM |
5944 | if (relocs == NULL) |
| 5945 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
| 645ea6a9 | 5946 | |
| 8387904d | 5947 | /* Go find the opd reloc at the sym address. */ |
| 8860955f | 5948 | lo = relocs; |
| 8387904d AM |
5949 | BFD_ASSERT (lo != NULL); |
| 5950 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
| 645ea6a9 | 5951 | val = (bfd_vma) -1; |
| 8387904d AM |
5952 | while (lo < hi) |
| 5953 | { | |
| 5954 | look = lo + (hi - lo) / 2; | |
| 5955 | if (look->r_offset < offset) | |
| 5956 | lo = look + 1; | |
| 5957 | else if (look->r_offset > offset) | |
| 5958 | hi = look; | |
| 5959 | else | |
| 5960 | { | |
| 0ffa91dd NC |
5961 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
| 5962 | ||
| 8387904d AM |
5963 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
| 5964 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
| 5965 | { | |
| 5966 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
| 8387904d AM |
5967 | asection *sec; |
| 5968 | ||
| 62599110 AM |
5969 | if (symndx < symtab_hdr->sh_info |
| 5970 | || elf_sym_hashes (opd_bfd) == NULL) | |
| 8387904d AM |
5971 | { |
| 5972 | Elf_Internal_Sym *sym; | |
| 5973 | ||
| 5974 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 5975 | if (sym == NULL) | |
| 5976 | { | |
| 62599110 AM |
5977 | size_t symcnt = symtab_hdr->sh_info; |
| 5978 | if (elf_sym_hashes (opd_bfd) == NULL) | |
| 5979 | symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize; | |
| 5980 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt, | |
| 8387904d AM |
5981 | 0, NULL, NULL, NULL); |
| 5982 | if (sym == NULL) | |
| 645ea6a9 | 5983 | break; |
| 8387904d AM |
5984 | symtab_hdr->contents = (bfd_byte *) sym; |
| 5985 | } | |
| 5986 | ||
| 5987 | sym += symndx; | |
| 5988 | val = sym->st_value; | |
| cb33740c | 5989 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
| 8387904d AM |
5990 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
| 5991 | } | |
| 5992 | else | |
| 5993 | { | |
| 5994 | struct elf_link_hash_entry **sym_hashes; | |
| 5995 | struct elf_link_hash_entry *rh; | |
| 5996 | ||
| 5997 | sym_hashes = elf_sym_hashes (opd_bfd); | |
| 5998 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
| 128205bb AM |
5999 | if (rh != NULL) |
| 6000 | { | |
| 6001 | rh = elf_follow_link (rh); | |
| 6002 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
| 6003 | || rh->root.type == bfd_link_hash_defweak); | |
| 6004 | val = rh->root.u.def.value; | |
| 6005 | sec = rh->root.u.def.section; | |
| 6006 | } | |
| 6007 | else | |
| 6008 | { | |
| 6009 | /* Handle the odd case where we can be called | |
| 6010 | during bfd_elf_link_add_symbols before the | |
| 6011 | symbol hashes have been fully populated. */ | |
| 6012 | Elf_Internal_Sym *sym; | |
| 6013 | ||
| 6014 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1, | |
| 6015 | symndx, NULL, NULL, NULL); | |
| 6016 | if (sym == NULL) | |
| 6017 | break; | |
| 6018 | ||
| 6019 | val = sym->st_value; | |
| 6020 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
| 6021 | free (sym); | |
| 6022 | } | |
| 8387904d AM |
6023 | } |
| 6024 | val += look->r_addend; | |
| 6025 | if (code_off != NULL) | |
| 6026 | *code_off = val; | |
| 6027 | if (code_sec != NULL) | |
| aef36ac1 AM |
6028 | { |
| 6029 | if (in_code_sec && *code_sec != sec) | |
| 6030 | return -1; | |
| 6031 | else | |
| 6032 | *code_sec = sec; | |
| 6033 | } | |
| 8387904d AM |
6034 | if (sec != NULL && sec->output_section != NULL) |
| 6035 | val += sec->output_section->vma + sec->output_offset; | |
| 8387904d AM |
6036 | } |
| 6037 | break; | |
| 6038 | } | |
| 6039 | } | |
| 645ea6a9 | 6040 | |
| 645ea6a9 | 6041 | return val; |
| 8387904d AM |
6042 | } |
| 6043 | ||
| aef36ac1 AM |
6044 | /* If the ELF symbol SYM might be a function in SEC, return the |
| 6045 | function size and set *CODE_OFF to the function's entry point, | |
| 6046 | otherwise return zero. */ | |
| 9f296da3 | 6047 | |
| aef36ac1 AM |
6048 | static bfd_size_type |
| 6049 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
| 6050 | bfd_vma *code_off) | |
| 9f296da3 | 6051 | { |
| aef36ac1 AM |
6052 | bfd_size_type size; |
| 6053 | ||
| 6054 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
| 6055 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
| 6056 | return 0; | |
| 6057 | ||
| 6058 | size = 0; | |
| 6059 | if (!(sym->flags & BSF_SYNTHETIC)) | |
| 6060 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
| 6061 | ||
| 6062 | if (strcmp (sym->section->name, ".opd") == 0) | |
| 9f296da3 | 6063 | { |
| aef36ac1 AM |
6064 | if (opd_entry_value (sym->section, sym->value, |
| 6065 | &sec, code_off, TRUE) == (bfd_vma) -1) | |
| 6066 | return 0; | |
| 6067 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
| 6068 | symbol. This size has nothing to do with the code size of the | |
| 6069 | function, which is what we're supposed to return, but the | |
| 6070 | code size isn't available without looking up the dot-sym. | |
| 6071 | However, doing that would be a waste of time particularly | |
| 6072 | since elf_find_function will look at the dot-sym anyway. | |
| 6073 | Now, elf_find_function will keep the largest size of any | |
| 6074 | function sym found at the code address of interest, so return | |
| 6075 | 1 here to avoid it incorrectly caching a larger function size | |
| 6076 | for a small function. This does mean we return the wrong | |
| 6077 | size for a new-ABI function of size 24, but all that does is | |
| 6078 | disable caching for such functions. */ | |
| 6079 | if (size == 24) | |
| 6080 | size = 1; | |
| 9f296da3 | 6081 | } |
| aef36ac1 AM |
6082 | else |
| 6083 | { | |
| 6084 | if (sym->section != sec) | |
| 6085 | return 0; | |
| 6086 | *code_off = sym->value; | |
| 6087 | } | |
| 6088 | if (size == 0) | |
| 6089 | size = 1; | |
| 6090 | return size; | |
| 9f296da3 AM |
6091 | } |
| 6092 | ||
| 854b41e7 AM |
6093 | /* Return true if symbol is defined in a regular object file. */ |
| 6094 | ||
| 6095 | static bfd_boolean | |
| 6096 | is_static_defined (struct elf_link_hash_entry *h) | |
| 6097 | { | |
| 6098 | return ((h->root.type == bfd_link_hash_defined | |
| 6099 | || h->root.type == bfd_link_hash_defweak) | |
| 6100 | && h->root.u.def.section != NULL | |
| 6101 | && h->root.u.def.section->output_section != NULL); | |
| 6102 | } | |
| 6103 | ||
| b31867b6 AM |
6104 | /* If FDH is a function descriptor symbol, return the associated code |
| 6105 | entry symbol if it is defined. Return NULL otherwise. */ | |
| 6106 | ||
| 6107 | static struct ppc_link_hash_entry * | |
| 6108 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
| 6109 | { | |
| 6110 | if (fdh->is_func_descriptor) | |
| 6111 | { | |
| 6112 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
| 6113 | if (fh->elf.root.type == bfd_link_hash_defined | |
| 6114 | || fh->elf.root.type == bfd_link_hash_defweak) | |
| 6115 | return fh; | |
| 6116 | } | |
| 6117 | return NULL; | |
| 6118 | } | |
| 6119 | ||
| 6120 | /* If FH is a function code entry symbol, return the associated | |
| 6121 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
| 6122 | ||
| 6123 | static struct ppc_link_hash_entry * | |
| 6124 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
| 6125 | { | |
| 6126 | if (fh->oh != NULL | |
| 6127 | && fh->oh->is_func_descriptor) | |
| 6128 | { | |
| 6129 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
| 6130 | if (fdh->elf.root.type == bfd_link_hash_defined | |
| 6131 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 6132 | return fdh; | |
| 6133 | } | |
| 6134 | return NULL; | |
| 6135 | } | |
| 6136 | ||
| 74f0fb50 AM |
6137 | /* Mark all our entry sym sections, both opd and code section. */ |
| 6138 | ||
| 6139 | static void | |
| 6140 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
| 6141 | { | |
| 6142 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 6143 | struct bfd_sym_chain *sym; | |
| 6144 | ||
| 4dfe6ac6 NC |
6145 | if (htab == NULL) |
| 6146 | return; | |
| 6147 | ||
| 74f0fb50 AM |
6148 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
| 6149 | { | |
| b31867b6 | 6150 | struct ppc_link_hash_entry *eh, *fh; |
| 74f0fb50 AM |
6151 | asection *sec; |
| 6152 | ||
| 6153 | eh = (struct ppc_link_hash_entry *) | |
| b31867b6 | 6154 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
| 74f0fb50 AM |
6155 | if (eh == NULL) |
| 6156 | continue; | |
| 6157 | if (eh->elf.root.type != bfd_link_hash_defined | |
| 6158 | && eh->elf.root.type != bfd_link_hash_defweak) | |
| 6159 | continue; | |
| 6160 | ||
| b31867b6 AM |
6161 | fh = defined_code_entry (eh); |
| 6162 | if (fh != NULL) | |
| 74f0fb50 | 6163 | { |
| b31867b6 | 6164 | sec = fh->elf.root.u.def.section; |
| 74f0fb50 AM |
6165 | sec->flags |= SEC_KEEP; |
| 6166 | } | |
| 6167 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
| 6168 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6169 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6170 | &sec, NULL, FALSE) != (bfd_vma) -1) |
| 74f0fb50 AM |
6171 | sec->flags |= SEC_KEEP; |
| 6172 | ||
| 6173 | sec = eh->elf.root.u.def.section; | |
| 6174 | sec->flags |= SEC_KEEP; | |
| 6175 | } | |
| 6176 | } | |
| 6177 | ||
| 64d03ab5 AM |
6178 | /* Mark sections containing dynamically referenced symbols. When |
| 6179 | building shared libraries, we must assume that any visible symbol is | |
| 6180 | referenced. */ | |
| 6181 | ||
| 6182 | static bfd_boolean | |
| 6183 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
| 6184 | { | |
| 6185 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
| 6186 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
| b31867b6 | 6187 | struct ppc_link_hash_entry *fdh; |
| b407645f | 6188 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
| 64d03ab5 | 6189 | |
| 64d03ab5 | 6190 | /* Dynamic linking info is on the func descriptor sym. */ |
| b31867b6 AM |
6191 | fdh = defined_func_desc (eh); |
| 6192 | if (fdh != NULL) | |
| 6193 | eh = fdh; | |
| 64d03ab5 AM |
6194 | |
| 6195 | if ((eh->elf.root.type == bfd_link_hash_defined | |
| 6196 | || eh->elf.root.type == bfd_link_hash_defweak) | |
| 6197 | && (eh->elf.ref_dynamic | |
| b407645f | 6198 | || (eh->elf.def_regular |
| 64d03ab5 | 6199 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
| 4c58e0d8 | 6200 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
| b407645f AM |
6201 | && (!info->executable |
| 6202 | || info->export_dynamic | |
| 6203 | || (eh->elf.dynamic | |
| 6204 | && d != NULL | |
| 6205 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
| 4c58e0d8 AM |
6206 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL |
| 6207 | || !bfd_hide_sym_by_version (info->version_info, | |
| 6208 | eh->elf.root.root.string))))) | |
| 64d03ab5 AM |
6209 | { |
| 6210 | asection *code_sec; | |
| b31867b6 | 6211 | struct ppc_link_hash_entry *fh; |
| 64d03ab5 AM |
6212 | |
| 6213 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
| 6214 | ||
| 6215 | /* Function descriptor syms cause the associated | |
| 6216 | function code sym section to be marked. */ | |
| b31867b6 AM |
6217 | fh = defined_code_entry (eh); |
| 6218 | if (fh != NULL) | |
| 6219 | { | |
| 6220 | code_sec = fh->elf.root.u.def.section; | |
| 6221 | code_sec->flags |= SEC_KEEP; | |
| 6222 | } | |
| 64d03ab5 AM |
6223 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 6224 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6225 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6226 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
| 64d03ab5 AM |
6227 | code_sec->flags |= SEC_KEEP; |
| 6228 | } | |
| 6229 | ||
| 6230 | return TRUE; | |
| 6231 | } | |
| 6232 | ||
| 5bd4f169 AM |
6233 | /* Return the section that should be marked against GC for a given |
| 6234 | relocation. */ | |
| 6235 | ||
| 6236 | static asection * | |
| 4ce794b7 | 6237 | ppc64_elf_gc_mark_hook (asection *sec, |
| fb34365b | 6238 | struct bfd_link_info *info, |
| 4ce794b7 AM |
6239 | Elf_Internal_Rela *rel, |
| 6240 | struct elf_link_hash_entry *h, | |
| 6241 | Elf_Internal_Sym *sym) | |
| 5bd4f169 | 6242 | { |
| ccfa59ea AM |
6243 | asection *rsec; |
| 6244 | ||
| ccfa59ea AM |
6245 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
| 6246 | function sections, as all functions are referenced in .opd. */ | |
| 6247 | rsec = NULL; | |
| 6248 | if (get_opd_info (sec) != NULL) | |
| 6249 | return rsec; | |
| 1e2f5b6e | 6250 | |
| 5bd4f169 AM |
6251 | if (h != NULL) |
| 6252 | { | |
| 04c9666a | 6253 | enum elf_ppc64_reloc_type r_type; |
| b31867b6 | 6254 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
| a33d1f77 | 6255 | |
| 4ce794b7 | 6256 | r_type = ELF64_R_TYPE (rel->r_info); |
| a33d1f77 | 6257 | switch (r_type) |
| 5bd4f169 AM |
6258 | { |
| 6259 | case R_PPC64_GNU_VTINHERIT: | |
| 6260 | case R_PPC64_GNU_VTENTRY: | |
| 6261 | break; | |
| 6262 | ||
| 6263 | default: | |
| 6264 | switch (h->root.type) | |
| 6265 | { | |
| 6266 | case bfd_link_hash_defined: | |
| 6267 | case bfd_link_hash_defweak: | |
| ccfa59ea | 6268 | eh = (struct ppc_link_hash_entry *) h; |
| b31867b6 AM |
6269 | fdh = defined_func_desc (eh); |
| 6270 | if (fdh != NULL) | |
| 6271 | eh = fdh; | |
| 1e2f5b6e AM |
6272 | |
| 6273 | /* Function descriptor syms cause the associated | |
| 6274 | function code sym section to be marked. */ | |
| b31867b6 AM |
6275 | fh = defined_code_entry (eh); |
| 6276 | if (fh != NULL) | |
| ccfa59ea AM |
6277 | { |
| 6278 | /* They also mark their opd section. */ | |
| 74f0fb50 | 6279 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 6280 | |
| b31867b6 | 6281 | rsec = fh->elf.root.u.def.section; |
| ccfa59ea | 6282 | } |
| 8387904d AM |
6283 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 6284 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6285 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6286 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
| 74f0fb50 | 6287 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 6288 | else |
| 1e2f5b6e AM |
6289 | rsec = h->root.u.def.section; |
| 6290 | break; | |
| 5bd4f169 AM |
6291 | |
| 6292 | case bfd_link_hash_common: | |
| 1e2f5b6e AM |
6293 | rsec = h->root.u.c.p->section; |
| 6294 | break; | |
| 5bd4f169 AM |
6295 | |
| 6296 | default: | |
| fb34365b | 6297 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 5bd4f169 AM |
6298 | } |
| 6299 | } | |
| 6300 | } | |
| 6301 | else | |
| 6302 | { | |
| 74f0fb50 | 6303 | struct _opd_sec_data *opd; |
| 1e2f5b6e AM |
6304 | |
| 6305 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
| 74f0fb50 AM |
6306 | opd = get_opd_info (rsec); |
| 6307 | if (opd != NULL && opd->func_sec != NULL) | |
| ccfa59ea | 6308 | { |
| 74f0fb50 | 6309 | rsec->gc_mark = 1; |
| ccfa59ea | 6310 | |
| 74f0fb50 | 6311 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
| ccfa59ea | 6312 | } |
| 5bd4f169 AM |
6313 | } |
| 6314 | ||
| 1e2f5b6e | 6315 | return rsec; |
| 5bd4f169 AM |
6316 | } |
| 6317 | ||
| 65f38f15 AM |
6318 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
| 6319 | section being removed. */ | |
| 5bd4f169 | 6320 | |
| b34976b6 | 6321 | static bfd_boolean |
| 4ce794b7 AM |
6322 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
| 6323 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 6324 | { |
| 411e1bfb | 6325 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
6326 | Elf_Internal_Shdr *symtab_hdr; |
| 6327 | struct elf_link_hash_entry **sym_hashes; | |
| 411e1bfb | 6328 | struct got_entry **local_got_ents; |
| 5bd4f169 | 6329 | const Elf_Internal_Rela *rel, *relend; |
| 5bd4f169 | 6330 | |
| 7dda2462 TG |
6331 | if (info->relocatable) |
| 6332 | return TRUE; | |
| 6333 | ||
| 680a3378 AM |
6334 | if ((sec->flags & SEC_ALLOC) == 0) |
| 6335 | return TRUE; | |
| 6336 | ||
| ec338859 AM |
6337 | elf_section_data (sec)->local_dynrel = NULL; |
| 6338 | ||
| 411e1bfb | 6339 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
6340 | if (htab == NULL) |
| 6341 | return FALSE; | |
| 6342 | ||
| 0ffa91dd | 6343 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 | 6344 | sym_hashes = elf_sym_hashes (abfd); |
| 411e1bfb | 6345 | local_got_ents = elf_local_got_ents (abfd); |
| 5bd4f169 AM |
6346 | |
| 6347 | relend = relocs + sec->reloc_count; | |
| 6348 | for (rel = relocs; rel < relend; rel++) | |
| a33d1f77 AM |
6349 | { |
| 6350 | unsigned long r_symndx; | |
| 04c9666a | 6351 | enum elf_ppc64_reloc_type r_type; |
| 58ac9f71 | 6352 | struct elf_link_hash_entry *h = NULL; |
| f961d9dd | 6353 | unsigned char tls_type = 0; |
| 5bd4f169 | 6354 | |
| a33d1f77 | 6355 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 4ce794b7 | 6356 | r_type = ELF64_R_TYPE (rel->r_info); |
| 58ac9f71 AM |
6357 | if (r_symndx >= symtab_hdr->sh_info) |
| 6358 | { | |
| 6359 | struct ppc_link_hash_entry *eh; | |
| 6061a67d AM |
6360 | struct elf_dyn_relocs **pp; |
| 6361 | struct elf_dyn_relocs *p; | |
| 58ac9f71 AM |
6362 | |
| 6363 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 6364 | h = elf_follow_link (h); |
| 58ac9f71 AM |
6365 | eh = (struct ppc_link_hash_entry *) h; |
| 6366 | ||
| 6367 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
| 6368 | if (p->sec == sec) | |
| 6369 | { | |
| 6370 | /* Everything must go for SEC. */ | |
| 6371 | *pp = p->next; | |
| 6372 | break; | |
| 6373 | } | |
| 6374 | } | |
| 6375 | ||
| e054468f AM |
6376 | if (is_branch_reloc (r_type)) |
| 6377 | { | |
| 6378 | struct plt_entry **ifunc = NULL; | |
| 6379 | if (h != NULL) | |
| 6380 | { | |
| 6381 | if (h->type == STT_GNU_IFUNC) | |
| 6382 | ifunc = &h->plt.plist; | |
| 6383 | } | |
| 6384 | else if (local_got_ents != NULL) | |
| 6385 | { | |
| 6386 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 6387 | (local_got_ents + symtab_hdr->sh_info); | |
| f961d9dd | 6388 | unsigned char *local_got_tls_masks = (unsigned char *) |
| e054468f AM |
6389 | (local_plt + symtab_hdr->sh_info); |
| 6390 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
| 6391 | ifunc = local_plt + r_symndx; | |
| 6392 | } | |
| 6393 | if (ifunc != NULL) | |
| 6394 | { | |
| 6395 | struct plt_entry *ent; | |
| 6396 | ||
| 6397 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
| 6398 | if (ent->addend == rel->r_addend) | |
| 6399 | break; | |
| 6400 | if (ent == NULL) | |
| 6401 | abort (); | |
| 6402 | if (ent->plt.refcount > 0) | |
| 6403 | ent->plt.refcount -= 1; | |
| 6404 | continue; | |
| 6405 | } | |
| 6406 | } | |
| 6407 | ||
| a33d1f77 AM |
6408 | switch (r_type) |
| 6409 | { | |
| 411e1bfb AM |
6410 | case R_PPC64_GOT_TLSLD16: |
| 6411 | case R_PPC64_GOT_TLSLD16_LO: | |
| 6412 | case R_PPC64_GOT_TLSLD16_HI: | |
| 6413 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 6414 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
6415 | goto dogot; |
| 6416 | ||
| 6417 | case R_PPC64_GOT_TLSGD16: | |
| 6418 | case R_PPC64_GOT_TLSGD16_LO: | |
| 6419 | case R_PPC64_GOT_TLSGD16_HI: | |
| 6420 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 6421 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
6422 | goto dogot; |
| 6423 | ||
| 6424 | case R_PPC64_GOT_TPREL16_DS: | |
| 6425 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 6426 | case R_PPC64_GOT_TPREL16_HI: | |
| 6427 | case R_PPC64_GOT_TPREL16_HA: | |
| 6428 | tls_type = TLS_TLS | TLS_TPREL; | |
| 6429 | goto dogot; | |
| 6430 | ||
| 6431 | case R_PPC64_GOT_DTPREL16_DS: | |
| 6432 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 6433 | case R_PPC64_GOT_DTPREL16_HI: | |
| 6434 | case R_PPC64_GOT_DTPREL16_HA: | |
| 6435 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 6436 | goto dogot; | |
| 6437 | ||
| a33d1f77 AM |
6438 | case R_PPC64_GOT16: |
| 6439 | case R_PPC64_GOT16_DS: | |
| 6440 | case R_PPC64_GOT16_HA: | |
| 6441 | case R_PPC64_GOT16_HI: | |
| 6442 | case R_PPC64_GOT16_LO: | |
| 6443 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb AM |
6444 | dogot: |
| 6445 | { | |
| 6446 | struct got_entry *ent; | |
| 6447 | ||
| 58ac9f71 AM |
6448 | if (h != NULL) |
| 6449 | ent = h->got.glist; | |
| 411e1bfb AM |
6450 | else |
| 6451 | ent = local_got_ents[r_symndx]; | |
| 6452 | ||
| 6453 | for (; ent != NULL; ent = ent->next) | |
| 6454 | if (ent->addend == rel->r_addend | |
| e717da7e | 6455 | && ent->owner == abfd |
| 411e1bfb AM |
6456 | && ent->tls_type == tls_type) |
| 6457 | break; | |
| 6458 | if (ent == NULL) | |
| 6459 | abort (); | |
| 6460 | if (ent->got.refcount > 0) | |
| 6461 | ent->got.refcount -= 1; | |
| 6462 | } | |
| a33d1f77 | 6463 | break; |
| 65f38f15 | 6464 | |
| a33d1f77 AM |
6465 | case R_PPC64_PLT16_HA: |
| 6466 | case R_PPC64_PLT16_HI: | |
| 6467 | case R_PPC64_PLT16_LO: | |
| 6468 | case R_PPC64_PLT32: | |
| 6469 | case R_PPC64_PLT64: | |
| 721956f4 AM |
6470 | case R_PPC64_REL14: |
| 6471 | case R_PPC64_REL14_BRNTAKEN: | |
| 6472 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 | 6473 | case R_PPC64_REL24: |
| 58ac9f71 | 6474 | if (h != NULL) |
| 5d1634d7 | 6475 | { |
| 411e1bfb AM |
6476 | struct plt_entry *ent; |
| 6477 | ||
| 411e1bfb AM |
6478 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
| 6479 | if (ent->addend == rel->r_addend) | |
| 6480 | break; | |
| 7c6c1722 | 6481 | if (ent != NULL && ent->plt.refcount > 0) |
| 411e1bfb | 6482 | ent->plt.refcount -= 1; |
| 5d1634d7 | 6483 | } |
| e86ce104 | 6484 | break; |
| 5d1634d7 | 6485 | |
| a33d1f77 AM |
6486 | default: |
| 6487 | break; | |
| 6488 | } | |
| 6489 | } | |
| b34976b6 | 6490 | return TRUE; |
| 5bd4f169 AM |
6491 | } |
| 6492 | ||
| deb0e272 AM |
6493 | /* The maximum size of .sfpr. */ |
| 6494 | #define SFPR_MAX (218*4) | |
| 6495 | ||
| 6496 | struct sfpr_def_parms | |
| 6497 | { | |
| 699733f6 AM |
6498 | const char name[12]; |
| 6499 | unsigned char lo, hi; | |
| deb0e272 AM |
6500 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
| 6501 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
| 6502 | }; | |
| 6503 | ||
| 6504 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
| 6505 | ||
| 4dfe6ac6 | 6506 | static bfd_boolean |
| deb0e272 AM |
6507 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
| 6508 | { | |
| 6509 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 6510 | unsigned int i; | |
| 6511 | size_t len = strlen (parm->name); | |
| 6512 | bfd_boolean writing = FALSE; | |
| 699733f6 | 6513 | char sym[16]; |
| deb0e272 | 6514 | |
| 4dfe6ac6 NC |
6515 | if (htab == NULL) |
| 6516 | return FALSE; | |
| 6517 | ||
| deb0e272 AM |
6518 | memcpy (sym, parm->name, len); |
| 6519 | sym[len + 2] = 0; | |
| 6520 | ||
| 6521 | for (i = parm->lo; i <= parm->hi; i++) | |
| 6522 | { | |
| 6523 | struct elf_link_hash_entry *h; | |
| 6524 | ||
| 6525 | sym[len + 0] = i / 10 + '0'; | |
| 6526 | sym[len + 1] = i % 10 + '0'; | |
| 6527 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
| 6528 | if (h != NULL | |
| f5385ebf | 6529 | && !h->def_regular) |
| deb0e272 AM |
6530 | { |
| 6531 | h->root.type = bfd_link_hash_defined; | |
| 6532 | h->root.u.def.section = htab->sfpr; | |
| 6533 | h->root.u.def.value = htab->sfpr->size; | |
| 6534 | h->type = STT_FUNC; | |
| f5385ebf | 6535 | h->def_regular = 1; |
| deb0e272 AM |
6536 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
| 6537 | writing = TRUE; | |
| 6538 | if (htab->sfpr->contents == NULL) | |
| 6539 | { | |
| 6540 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
| 6541 | if (htab->sfpr->contents == NULL) | |
| 6542 | return FALSE; | |
| 6543 | } | |
| 6544 | } | |
| 6545 | if (writing) | |
| 6546 | { | |
| 6547 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
| 6548 | if (i != parm->hi) | |
| 6549 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
| 6550 | else | |
| 6551 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
| 6552 | htab->sfpr->size = p - htab->sfpr->contents; | |
| 6553 | } | |
| 6554 | } | |
| 6555 | ||
| 6556 | return TRUE; | |
| 6557 | } | |
| 6558 | ||
| 6559 | static bfd_byte * | |
| 6560 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 6561 | { | |
| 6562 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6563 | return p + 4; | |
| 6564 | } | |
| 6565 | ||
| 6566 | static bfd_byte * | |
| 6567 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6568 | { | |
| 6569 | p = savegpr0 (abfd, p, r); | |
| a078d95a | 6570 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
| deb0e272 AM |
6571 | p = p + 4; |
| 6572 | bfd_put_32 (abfd, BLR, p); | |
| 6573 | return p + 4; | |
| 6574 | } | |
| 6575 | ||
| 6576 | static bfd_byte * | |
| 6577 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 6578 | { | |
| 6579 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6580 | return p + 4; | |
| 6581 | } | |
| 6582 | ||
| 6583 | static bfd_byte * | |
| 6584 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6585 | { | |
| a078d95a | 6586 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
| deb0e272 AM |
6587 | p = p + 4; |
| 6588 | p = restgpr0 (abfd, p, r); | |
| 6589 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 6590 | p = p + 4; | |
| 6591 | if (r == 29) | |
| 6592 | { | |
| 6593 | p = restgpr0 (abfd, p, 30); | |
| 6594 | p = restgpr0 (abfd, p, 31); | |
| 6595 | } | |
| 6596 | bfd_put_32 (abfd, BLR, p); | |
| 6597 | return p + 4; | |
| 6598 | } | |
| 6599 | ||
| 6600 | static bfd_byte * | |
| 6601 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 6602 | { | |
| 6603 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6604 | return p + 4; | |
| 6605 | } | |
| 6606 | ||
| 6607 | static bfd_byte * | |
| 6608 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6609 | { | |
| 6610 | p = savegpr1 (abfd, p, r); | |
| 6611 | bfd_put_32 (abfd, BLR, p); | |
| 6612 | return p + 4; | |
| 6613 | } | |
| 6614 | ||
| 6615 | static bfd_byte * | |
| 6616 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 6617 | { | |
| 6618 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6619 | return p + 4; | |
| 6620 | } | |
| 6621 | ||
| 6622 | static bfd_byte * | |
| 6623 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6624 | { | |
| 6625 | p = restgpr1 (abfd, p, r); | |
| 6626 | bfd_put_32 (abfd, BLR, p); | |
| 6627 | return p + 4; | |
| 6628 | } | |
| 6629 | ||
| 6630 | static bfd_byte * | |
| 6631 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
| 6632 | { | |
| 6633 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6634 | return p + 4; | |
| 6635 | } | |
| 6636 | ||
| 6637 | static bfd_byte * | |
| 6638 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6639 | { | |
| 6640 | p = savefpr (abfd, p, r); | |
| a078d95a | 6641 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
| deb0e272 AM |
6642 | p = p + 4; |
| 6643 | bfd_put_32 (abfd, BLR, p); | |
| 6644 | return p + 4; | |
| 6645 | } | |
| 6646 | ||
| 6647 | static bfd_byte * | |
| 6648 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
| 6649 | { | |
| 6650 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6651 | return p + 4; | |
| 6652 | } | |
| 6653 | ||
| 6654 | static bfd_byte * | |
| 6655 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6656 | { | |
| a078d95a | 6657 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
| deb0e272 AM |
6658 | p = p + 4; |
| 6659 | p = restfpr (abfd, p, r); | |
| 6660 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 6661 | p = p + 4; | |
| 6662 | if (r == 29) | |
| 6663 | { | |
| 6664 | p = restfpr (abfd, p, 30); | |
| 6665 | p = restfpr (abfd, p, 31); | |
| 6666 | } | |
| 6667 | bfd_put_32 (abfd, BLR, p); | |
| 6668 | return p + 4; | |
| 6669 | } | |
| 6670 | ||
| 6671 | static bfd_byte * | |
| 6672 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6673 | { | |
| 6674 | p = savefpr (abfd, p, r); | |
| 6675 | bfd_put_32 (abfd, BLR, p); | |
| 6676 | return p + 4; | |
| 6677 | } | |
| 6678 | ||
| 6679 | static bfd_byte * | |
| 6680 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6681 | { | |
| 6682 | p = restfpr (abfd, p, r); | |
| 6683 | bfd_put_32 (abfd, BLR, p); | |
| 6684 | return p + 4; | |
| 6685 | } | |
| 6686 | ||
| 6687 | static bfd_byte * | |
| 6688 | savevr (bfd *abfd, bfd_byte *p, int r) | |
| 6689 | { | |
| 6690 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 6691 | p = p + 4; | |
| 6692 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
| 6693 | return p + 4; | |
| 6694 | } | |
| 6695 | ||
| 6696 | static bfd_byte * | |
| 6697 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6698 | { | |
| 6699 | p = savevr (abfd, p, r); | |
| 6700 | bfd_put_32 (abfd, BLR, p); | |
| 6701 | return p + 4; | |
| 6702 | } | |
| 6703 | ||
| 6704 | static bfd_byte * | |
| 6705 | restvr (bfd *abfd, bfd_byte *p, int r) | |
| 6706 | { | |
| 6707 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 6708 | p = p + 4; | |
| 6709 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
| 6710 | return p + 4; | |
| 6711 | } | |
| 6712 | ||
| 6713 | static bfd_byte * | |
| 6714 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6715 | { | |
| 6716 | p = restvr (abfd, p, r); | |
| 6717 | bfd_put_32 (abfd, BLR, p); | |
| 6718 | return p + 4; | |
| 6719 | } | |
| 6720 | ||
| e86ce104 AM |
6721 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
| 6722 | information on function code symbol entries to their corresponding | |
| 6723 | function descriptor symbol entries. */ | |
| deb0e272 | 6724 | |
| b34976b6 | 6725 | static bfd_boolean |
| 4ce794b7 | 6726 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 6727 | { |
| e86ce104 | 6728 | struct bfd_link_info *info; |
| 65f38f15 | 6729 | struct ppc_link_hash_table *htab; |
| 411e1bfb | 6730 | struct plt_entry *ent; |
| 50bc7936 AM |
6731 | struct ppc_link_hash_entry *fh; |
| 6732 | struct ppc_link_hash_entry *fdh; | |
| 6733 | bfd_boolean force_local; | |
| 5bd4f169 | 6734 | |
| 50bc7936 AM |
6735 | fh = (struct ppc_link_hash_entry *) h; |
| 6736 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
| b34976b6 | 6737 | return TRUE; |
| e86ce104 | 6738 | |
| 4ce794b7 | 6739 | info = inf; |
| 65f38f15 | 6740 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
6741 | if (htab == NULL) |
| 6742 | return FALSE; | |
| 5bd4f169 | 6743 | |
| c09bdfe5 AM |
6744 | /* Resolve undefined references to dot-symbols as the value |
| 6745 | in the function descriptor, if we have one in a regular object. | |
| 6746 | This is to satisfy cases like ".quad .foo". Calls to functions | |
| 6747 | in dynamic objects are handled elsewhere. */ | |
| 6748 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
| 6749 | && fh->was_undefined | |
| b31867b6 AM |
6750 | && (fdh = defined_func_desc (fh)) != NULL |
| 6751 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
| 6752 | && opd_entry_value (fdh->elf.root.u.def.section, | |
| 6753 | fdh->elf.root.u.def.value, | |
| c09bdfe5 | 6754 | &fh->elf.root.u.def.section, |
| aef36ac1 | 6755 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
| c09bdfe5 | 6756 | { |
| b31867b6 | 6757 | fh->elf.root.type = fdh->elf.root.type; |
| f5385ebf | 6758 | fh->elf.forced_local = 1; |
| b31867b6 AM |
6759 | fh->elf.def_regular = fdh->elf.def_regular; |
| 6760 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
| c09bdfe5 AM |
6761 | } |
| 6762 | ||
| e86ce104 AM |
6763 | /* If this is a function code symbol, transfer dynamic linking |
| 6764 | information to the function descriptor symbol. */ | |
| 50bc7936 | 6765 | if (!fh->is_func) |
| b34976b6 | 6766 | return TRUE; |
| e86ce104 | 6767 | |
| 50bc7936 | 6768 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
6769 | if (ent->plt.refcount > 0) |
| 6770 | break; | |
| 50bc7936 AM |
6771 | if (ent == NULL |
| 6772 | || fh->elf.root.root.string[0] != '.' | |
| 6773 | || fh->elf.root.root.string[1] == '\0') | |
| 6774 | return TRUE; | |
| 5bd4f169 | 6775 | |
| 50bc7936 AM |
6776 | /* Find the corresponding function descriptor symbol. Create it |
| 6777 | as undefined if necessary. */ | |
| 5bd4f169 | 6778 | |
| b31867b6 | 6779 | fdh = lookup_fdh (fh, htab); |
| 50bc7936 | 6780 | if (fdh == NULL |
| df131623 | 6781 | && !info->executable |
| 50bc7936 AM |
6782 | && (fh->elf.root.type == bfd_link_hash_undefined |
| 6783 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
| 6784 | { | |
| 908b32fc | 6785 | fdh = make_fdh (info, fh); |
| bb700d78 AM |
6786 | if (fdh == NULL) |
| 6787 | return FALSE; | |
| 50bc7936 | 6788 | } |
| 648cca2c | 6789 | |
| 908b32fc | 6790 | /* Fake function descriptors are made undefweak. If the function |
| 433817dd AM |
6791 | code symbol is strong undefined, make the fake sym the same. |
| 6792 | If the function code symbol is defined, then force the fake | |
| 6793 | descriptor local; We can't support overriding of symbols in a | |
| 6794 | shared library on a fake descriptor. */ | |
| 908b32fc AM |
6795 | |
| 6796 | if (fdh != NULL | |
| 6797 | && fdh->fake | |
| 433817dd | 6798 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
| 908b32fc | 6799 | { |
| 433817dd AM |
6800 | if (fh->elf.root.type == bfd_link_hash_undefined) |
| 6801 | { | |
| 6802 | fdh->elf.root.type = bfd_link_hash_undefined; | |
| 6803 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
| 6804 | } | |
| 6805 | else if (fh->elf.root.type == bfd_link_hash_defined | |
| 6806 | || fh->elf.root.type == bfd_link_hash_defweak) | |
| 6807 | { | |
| 6808 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
| 6809 | } | |
| 908b32fc AM |
6810 | } |
| 6811 | ||
| 50bc7936 | 6812 | if (fdh != NULL |
| f5385ebf | 6813 | && !fdh->elf.forced_local |
| df131623 | 6814 | && (!info->executable |
| f5385ebf AM |
6815 | || fdh->elf.def_dynamic |
| 6816 | || fdh->elf.ref_dynamic | |
| 50bc7936 AM |
6817 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
| 6818 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
| 6819 | { | |
| 6820 | if (fdh->elf.dynindx == -1) | |
| c152c796 | 6821 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
| 50bc7936 | 6822 | return FALSE; |
| f5385ebf AM |
6823 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
| 6824 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
| 6825 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
| 6826 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
| 50bc7936 | 6827 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
| e86ce104 | 6828 | { |
| 40d16e0b | 6829 | move_plt_plist (fh, fdh); |
| f5385ebf | 6830 | fdh->elf.needs_plt = 1; |
| e86ce104 | 6831 | } |
| 50bc7936 | 6832 | fdh->is_func_descriptor = 1; |
| 34814b9f AM |
6833 | fdh->oh = fh; |
| 6834 | fh->oh = fdh; | |
| e86ce104 AM |
6835 | } |
| 6836 | ||
| 50bc7936 AM |
6837 | /* Now that the info is on the function descriptor, clear the |
| 6838 | function code sym info. Any function code syms for which we | |
| 6839 | don't have a definition in a regular file, we force local. | |
| 6840 | This prevents a shared library from exporting syms that have | |
| 6841 | been imported from another library. Function code syms that | |
| 6842 | are really in the library we must leave global to prevent the | |
| 6843 | linker dragging in a definition from a static library. */ | |
| 93f3fa99 AM |
6844 | force_local = (!fh->elf.def_regular |
| 6845 | || fdh == NULL | |
| 6846 | || !fdh->elf.def_regular | |
| 6847 | || fdh->elf.forced_local); | |
| 50bc7936 AM |
6848 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| 6849 | ||
| b34976b6 | 6850 | return TRUE; |
| e86ce104 | 6851 | } |
| 40b8271b | 6852 | |
| e86ce104 | 6853 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
| 82bd7b59 AM |
6854 | this hook to a) provide some gcc support functions, and b) transfer |
| 6855 | dynamic linking information gathered so far on function code symbol | |
| 6856 | entries, to their corresponding function descriptor symbol entries. */ | |
| deb0e272 | 6857 | |
| b34976b6 | 6858 | static bfd_boolean |
| 4ce794b7 AM |
6859 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
| 6860 | struct bfd_link_info *info) | |
| e86ce104 AM |
6861 | { |
| 6862 | struct ppc_link_hash_table *htab; | |
| 82bd7b59 | 6863 | unsigned int i; |
| 27fc25a1 | 6864 | static const struct sfpr_def_parms funcs[] = |
| deb0e272 AM |
6865 | { |
| 6866 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
| 6867 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
| 6868 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
| 6869 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
| 6870 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
| 6871 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
| 6872 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
| 6873 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
| 6874 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
| 6875 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
| 6876 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
| 6877 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
| 6878 | }; | |
| e86ce104 AM |
6879 | |
| 6880 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
6881 | if (htab == NULL) |
| 6882 | return FALSE; | |
| 6883 | ||
| 5295321c AM |
6884 | if (!info->relocatable |
| 6885 | && htab->elf.hgot != NULL) | |
| dba6fa9b AM |
6886 | { |
| 6887 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
| 6888 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
| 6889 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
| 6890 | htab->elf.hgot->type = STT_OBJECT; | |
| 6891 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
| 6892 | htab->elf.hgot->root.u.def.value = 0; | |
| 6893 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
| 6894 | htab->elf.hgot->def_regular = 1; | |
| 6895 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | |
| 6896 | | STV_HIDDEN); | |
| 6897 | } | |
| c66bb0ee | 6898 | |
| 82bd7b59 AM |
6899 | if (htab->sfpr == NULL) |
| 6900 | /* We don't have any relocs. */ | |
| b34976b6 | 6901 | return TRUE; |
| 82bd7b59 | 6902 | |
| deb0e272 AM |
6903 | /* Provide any missing _save* and _rest* functions. */ |
| 6904 | htab->sfpr->size = 0; | |
| 7d4c687d | 6905 | if (htab->params->save_restore_funcs) |
| 27fc25a1 AM |
6906 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) |
| 6907 | if (!sfpr_define (info, &funcs[i])) | |
| 6908 | return FALSE; | |
| 82bd7b59 | 6909 | |
| 4ce794b7 | 6910 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
| 805fc799 | 6911 | |
| eea6121a | 6912 | if (htab->sfpr->size == 0) |
| 8423293d | 6913 | htab->sfpr->flags |= SEC_EXCLUDE; |
| 82bd7b59 | 6914 | |
| b34976b6 | 6915 | return TRUE; |
| e86ce104 AM |
6916 | } |
| 6917 | ||
| a345bc8d AM |
6918 | /* Return true if we have dynamic relocs that apply to read-only sections. */ |
| 6919 | ||
| 6920 | static bfd_boolean | |
| 6921 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
| 6922 | { | |
| 6923 | struct ppc_link_hash_entry *eh; | |
| 6924 | struct elf_dyn_relocs *p; | |
| 6925 | ||
| 6926 | eh = (struct ppc_link_hash_entry *) h; | |
| 6927 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 6928 | { | |
| 6929 | asection *s = p->sec->output_section; | |
| 6930 | ||
| 6931 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 6932 | return TRUE; | |
| 6933 | } | |
| 6934 | return FALSE; | |
| 6935 | } | |
| 6936 | ||
| e86ce104 AM |
6937 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 6938 | regular object. The current definition is in some section of the | |
| 6939 | dynamic object, but we're not including those sections. We have to | |
| 6940 | change the definition to something the rest of the link can | |
| 6941 | understand. */ | |
| 6942 | ||
| b34976b6 | 6943 | static bfd_boolean |
| 4ce794b7 AM |
6944 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 6945 | struct elf_link_hash_entry *h) | |
| e86ce104 AM |
6946 | { |
| 6947 | struct ppc_link_hash_table *htab; | |
| e86ce104 | 6948 | asection *s; |
| e86ce104 AM |
6949 | |
| 6950 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
6951 | if (htab == NULL) |
| 6952 | return FALSE; | |
| e86ce104 AM |
6953 | |
| 6954 | /* Deal with function syms. */ | |
| 6955 | if (h->type == STT_FUNC | |
| e054468f | 6956 | || h->type == STT_GNU_IFUNC |
| f5385ebf | 6957 | || h->needs_plt) |
| e86ce104 AM |
6958 | { |
| 6959 | /* Clear procedure linkage table information for any symbol that | |
| 6960 | won't need a .plt entry. */ | |
| 411e1bfb AM |
6961 | struct plt_entry *ent; |
| 6962 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
| 6963 | if (ent->plt.refcount > 0) | |
| 6964 | break; | |
| 8387904d | 6965 | if (ent == NULL |
| e054468f AM |
6966 | || (h->type != STT_GNU_IFUNC |
| 6967 | && (SYMBOL_CALLS_LOCAL (info, h) | |
| 6968 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
| 6969 | && h->root.type == bfd_link_hash_undefweak)))) | |
| 40b8271b | 6970 | { |
| 411e1bfb | 6971 | h->plt.plist = NULL; |
| f5385ebf | 6972 | h->needs_plt = 0; |
| 40b8271b | 6973 | } |
| a345bc8d AM |
6974 | else if (abiversion (info->output_bfd) == 2) |
| 6975 | { | |
| 6976 | /* After adjust_dynamic_symbol, non_got_ref set in the | |
| 6977 | non-shared case means that we have allocated space in | |
| 6978 | .dynbss for the symbol and thus dyn_relocs for this | |
| 6979 | symbol should be discarded. | |
| 6980 | If we get here we know we are making a PLT entry for this | |
| 6981 | symbol, and in an executable we'd normally resolve | |
| 6982 | relocations against this symbol to the PLT entry. Allow | |
| 6983 | dynamic relocs if the reference is weak, and the dynamic | |
| 6984 | relocs will not cause text relocation. */ | |
| 6985 | if (!h->ref_regular_nonweak | |
| 6986 | && h->non_got_ref | |
| 6987 | && h->type != STT_GNU_IFUNC | |
| 6988 | && !readonly_dynrelocs (h)) | |
| 6989 | h->non_got_ref = 0; | |
| 6990 | ||
| 6991 | /* If making a plt entry, then we don't need copy relocs. */ | |
| 6992 | return TRUE; | |
| 6993 | } | |
| 5bd4f169 | 6994 | } |
| bbd7ec4a | 6995 | else |
| 411e1bfb | 6996 | h->plt.plist = NULL; |
| 5bd4f169 AM |
6997 | |
| 6998 | /* If this is a weak symbol, and there is a real definition, the | |
| 6999 | processor independent code will have arranged for us to see the | |
| 7000 | real definition first, and we can just use the same value. */ | |
| f6e332e6 | 7001 | if (h->u.weakdef != NULL) |
| 5bd4f169 | 7002 | { |
| f6e332e6 AM |
7003 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 7004 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
| 7005 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
| 7006 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
| a23b6845 | 7007 | if (ELIMINATE_COPY_RELOCS) |
| f6e332e6 | 7008 | h->non_got_ref = h->u.weakdef->non_got_ref; |
| b34976b6 | 7009 | return TRUE; |
| 5bd4f169 AM |
7010 | } |
| 7011 | ||
| 5bd4f169 AM |
7012 | /* If we are creating a shared library, we must presume that the |
| 7013 | only references to the symbol are via the global offset table. | |
| 7014 | For such cases we need not do anything here; the relocations will | |
| 7015 | be handled correctly by relocate_section. */ | |
| 7016 | if (info->shared) | |
| b34976b6 | 7017 | return TRUE; |
| 5bd4f169 | 7018 | |
| 65f38f15 AM |
7019 | /* If there are no references to this symbol that do not use the |
| 7020 | GOT, we don't need to generate a copy reloc. */ | |
| f5385ebf | 7021 | if (!h->non_got_ref) |
| b34976b6 | 7022 | return TRUE; |
| 65f38f15 | 7023 | |
| b186458a JJ |
7024 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
| 7025 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
| 7026 | return TRUE; | |
| 7027 | ||
| a345bc8d AM |
7028 | /* If we didn't find any dynamic relocs in read-only sections, then |
| 7029 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
| 7030 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
| 65f38f15 | 7031 | { |
| a345bc8d AM |
7032 | h->non_got_ref = 0; |
| 7033 | return TRUE; | |
| 65f38f15 AM |
7034 | } |
| 7035 | ||
| 5d35169e | 7036 | if (h->plt.plist != NULL) |
| 97b639ba AM |
7037 | { |
| 7038 | /* We should never get here, but unfortunately there are versions | |
| 7039 | of gcc out there that improperly (for this ABI) put initialized | |
| 7040 | function pointers, vtable refs and suchlike in read-only | |
| 7041 | sections. Allow them to proceed, but warn that this might | |
| 7042 | break at runtime. */ | |
| 25f53a85 | 7043 | info->callbacks->einfo |
| bc30df16 | 7044 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
| 25f53a85 | 7045 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
| 97b639ba AM |
7046 | h->root.root.string); |
| 7047 | } | |
| 5d35169e AM |
7048 | |
| 7049 | /* This is a reference to a symbol defined by a dynamic object which | |
| 7050 | is not a function. */ | |
| 7051 | ||
| 5bd4f169 AM |
7052 | /* We must allocate the symbol in our .dynbss section, which will |
| 7053 | become part of the .bss section of the executable. There will be | |
| 7054 | an entry for this symbol in the .dynsym section. The dynamic | |
| 7055 | object will contain position independent code, so all references | |
| 7056 | from the dynamic object to this symbol will go through the global | |
| 7057 | offset table. The dynamic linker will use the .dynsym entry to | |
| 7058 | determine the address it must put in the global offset table, so | |
| 7059 | both the dynamic object and the regular object will refer to the | |
| 7060 | same memory location for the variable. */ | |
| 5bd4f169 | 7061 | |
| 04c9666a AM |
7062 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
| 7063 | to copy the initial value out of the dynamic object and into the | |
| 5bd4f169 AM |
7064 | runtime process image. We need to remember the offset into the |
| 7065 | .rela.bss section we are going to use. */ | |
| 1d7e9d18 | 7066 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
| 5bd4f169 | 7067 | { |
| eea6121a | 7068 | htab->relbss->size += sizeof (Elf64_External_Rela); |
| f5385ebf | 7069 | h->needs_copy = 1; |
| 5bd4f169 AM |
7070 | } |
| 7071 | ||
| 4ce794b7 | 7072 | s = htab->dynbss; |
| 5bd4f169 | 7073 | |
| 027297b7 | 7074 | return _bfd_elf_adjust_dynamic_copy (h, s); |
| 5bd4f169 AM |
7075 | } |
| 7076 | ||
| e86ce104 AM |
7077 | /* If given a function descriptor symbol, hide both the function code |
| 7078 | sym and the descriptor. */ | |
| 7079 | static void | |
| 4ce794b7 AM |
7080 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
| 7081 | struct elf_link_hash_entry *h, | |
| 7082 | bfd_boolean force_local) | |
| e86ce104 | 7083 | { |
| 34814b9f | 7084 | struct ppc_link_hash_entry *eh; |
| e86ce104 AM |
7085 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
| 7086 | ||
| 34814b9f AM |
7087 | eh = (struct ppc_link_hash_entry *) h; |
| 7088 | if (eh->is_func_descriptor) | |
| e86ce104 | 7089 | { |
| 34814b9f | 7090 | struct ppc_link_hash_entry *fh = eh->oh; |
| e86ce104 | 7091 | |
| 721956f4 | 7092 | if (fh == NULL) |
| d1329ca3 AM |
7093 | { |
| 7094 | const char *p, *q; | |
| 7095 | struct ppc_link_hash_table *htab; | |
| 7096 | char save; | |
| 7097 | ||
| 7098 | /* We aren't supposed to use alloca in BFD because on | |
| 7099 | systems which do not have alloca the version in libiberty | |
| 7100 | calls xmalloc, which might cause the program to crash | |
| 7101 | when it runs out of memory. This function doesn't have a | |
| 7102 | return status, so there's no way to gracefully return an | |
| 7103 | error. So cheat. We know that string[-1] can be safely | |
| 34814b9f AM |
7104 | accessed; It's either a string in an ELF string table, |
| 7105 | or allocated in an objalloc structure. */ | |
| d1329ca3 | 7106 | |
| 34814b9f | 7107 | p = eh->elf.root.root.string - 1; |
| d1329ca3 AM |
7108 | save = *p; |
| 7109 | *(char *) p = '.'; | |
| 7110 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
7111 | if (htab == NULL) |
| 7112 | return; | |
| 7113 | ||
| 34814b9f AM |
7114 | fh = (struct ppc_link_hash_entry *) |
| 7115 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
| d1329ca3 AM |
7116 | *(char *) p = save; |
| 7117 | ||
| 7118 | /* Unfortunately, if it so happens that the string we were | |
| 7119 | looking for was allocated immediately before this string, | |
| 7120 | then we overwrote the string terminator. That's the only | |
| 7121 | reason the lookup should fail. */ | |
| 7122 | if (fh == NULL) | |
| 7123 | { | |
| 34814b9f AM |
7124 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
| 7125 | while (q >= eh->elf.root.root.string && *q == *p) | |
| d1329ca3 | 7126 | --q, --p; |
| 34814b9f AM |
7127 | if (q < eh->elf.root.root.string && *p == '.') |
| 7128 | fh = (struct ppc_link_hash_entry *) | |
| 7129 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
| d1329ca3 AM |
7130 | } |
| 7131 | if (fh != NULL) | |
| 7132 | { | |
| 34814b9f AM |
7133 | eh->oh = fh; |
| 7134 | fh->oh = eh; | |
| d1329ca3 AM |
7135 | } |
| 7136 | } | |
| e86ce104 | 7137 | if (fh != NULL) |
| 34814b9f | 7138 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| e86ce104 AM |
7139 | } |
| 7140 | } | |
| 7141 | ||
| 411e1bfb | 7142 | static bfd_boolean |
| 8843416a AM |
7143 | get_sym_h (struct elf_link_hash_entry **hp, |
| 7144 | Elf_Internal_Sym **symp, | |
| 7145 | asection **symsecp, | |
| f961d9dd | 7146 | unsigned char **tls_maskp, |
| 8843416a AM |
7147 | Elf_Internal_Sym **locsymsp, |
| 7148 | unsigned long r_symndx, | |
| 7149 | bfd *ibfd) | |
| 411e1bfb | 7150 | { |
| 0ffa91dd | 7151 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
| 411e1bfb AM |
7152 | |
| 7153 | if (r_symndx >= symtab_hdr->sh_info) | |
| 7154 | { | |
| 7155 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
| 7156 | struct elf_link_hash_entry *h; | |
| 7157 | ||
| 7158 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 7159 | h = elf_follow_link (h); |
| 411e1bfb AM |
7160 | |
| 7161 | if (hp != NULL) | |
| 7162 | *hp = h; | |
| 7163 | ||
| 7164 | if (symp != NULL) | |
| 7165 | *symp = NULL; | |
| 7166 | ||
| 7167 | if (symsecp != NULL) | |
| 7168 | { | |
| 7169 | asection *symsec = NULL; | |
| 7170 | if (h->root.type == bfd_link_hash_defined | |
| 7171 | || h->root.type == bfd_link_hash_defweak) | |
| 7172 | symsec = h->root.u.def.section; | |
| 7173 | *symsecp = symsec; | |
| 7174 | } | |
| 7175 | ||
| e7b938ca | 7176 | if (tls_maskp != NULL) |
| 411e1bfb AM |
7177 | { |
| 7178 | struct ppc_link_hash_entry *eh; | |
| 7179 | ||
| 7180 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 7181 | *tls_maskp = &eh->tls_mask; |
| 411e1bfb AM |
7182 | } |
| 7183 | } | |
| 7184 | else | |
| 7185 | { | |
| 7186 | Elf_Internal_Sym *sym; | |
| 7187 | Elf_Internal_Sym *locsyms = *locsymsp; | |
| 7188 | ||
| 7189 | if (locsyms == NULL) | |
| 7190 | { | |
| 7191 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 7192 | if (locsyms == NULL) | |
| 7193 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
| 7194 | symtab_hdr->sh_info, | |
| 7195 | 0, NULL, NULL, NULL); | |
| 7196 | if (locsyms == NULL) | |
| 7197 | return FALSE; | |
| 7198 | *locsymsp = locsyms; | |
| 7199 | } | |
| 7200 | sym = locsyms + r_symndx; | |
| 7201 | ||
| 7202 | if (hp != NULL) | |
| 7203 | *hp = NULL; | |
| 7204 | ||
| 7205 | if (symp != NULL) | |
| 7206 | *symp = sym; | |
| 7207 | ||
| 7208 | if (symsecp != NULL) | |
| cb33740c | 7209 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
| 411e1bfb | 7210 | |
| e7b938ca | 7211 | if (tls_maskp != NULL) |
| 411e1bfb AM |
7212 | { |
| 7213 | struct got_entry **lgot_ents; | |
| f961d9dd | 7214 | unsigned char *tls_mask; |
| 411e1bfb | 7215 | |
| e7b938ca | 7216 | tls_mask = NULL; |
| 411e1bfb AM |
7217 | lgot_ents = elf_local_got_ents (ibfd); |
| 7218 | if (lgot_ents != NULL) | |
| 7219 | { | |
| e054468f AM |
7220 | struct plt_entry **local_plt = (struct plt_entry **) |
| 7221 | (lgot_ents + symtab_hdr->sh_info); | |
| f961d9dd | 7222 | unsigned char *lgot_masks = (unsigned char *) |
| e054468f | 7223 | (local_plt + symtab_hdr->sh_info); |
| e7b938ca | 7224 | tls_mask = &lgot_masks[r_symndx]; |
| 411e1bfb | 7225 | } |
| e7b938ca | 7226 | *tls_maskp = tls_mask; |
| 411e1bfb AM |
7227 | } |
| 7228 | } | |
| 7229 | return TRUE; | |
| 7230 | } | |
| 7231 | ||
| e7b938ca | 7232 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
| 951fd09b | 7233 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
| ad8e1ba5 | 7234 | type suitable for optimization, and 1 otherwise. */ |
| 951fd09b AM |
7235 | |
| 7236 | static int | |
| f961d9dd | 7237 | get_tls_mask (unsigned char **tls_maskp, |
| 3a71aa26 AM |
7238 | unsigned long *toc_symndx, |
| 7239 | bfd_vma *toc_addend, | |
| 0d4792f7 | 7240 | Elf_Internal_Sym **locsymsp, |
| 3a71aa26 AM |
7241 | const Elf_Internal_Rela *rel, |
| 7242 | bfd *ibfd) | |
| 411e1bfb AM |
7243 | { |
| 7244 | unsigned long r_symndx; | |
| 0d4792f7 | 7245 | int next_r; |
| 411e1bfb AM |
7246 | struct elf_link_hash_entry *h; |
| 7247 | Elf_Internal_Sym *sym; | |
| 7248 | asection *sec; | |
| 7249 | bfd_vma off; | |
| 7250 | ||
| 7251 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| e7b938ca | 7252 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
| 951fd09b | 7253 | return 0; |
| 411e1bfb | 7254 | |
| e7b938ca | 7255 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
| 411e1bfb | 7256 | || sec == NULL |
| 6bee8834 | 7257 | || ppc64_elf_section_data (sec) == NULL |
| 7c8fe5c4 | 7258 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
| 951fd09b | 7259 | return 1; |
| 411e1bfb AM |
7260 | |
| 7261 | /* Look inside a TOC section too. */ | |
| 7262 | if (h != NULL) | |
| 7263 | { | |
| 7264 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
| 7265 | off = h->root.u.def.value; | |
| 7266 | } | |
| 7267 | else | |
| 7268 | off = sym->st_value; | |
| 7269 | off += rel->r_addend; | |
| 7270 | BFD_ASSERT (off % 8 == 0); | |
| 3a71aa26 AM |
7271 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
| 7272 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
| 0d4792f7 AM |
7273 | if (toc_symndx != NULL) |
| 7274 | *toc_symndx = r_symndx; | |
| 3a71aa26 AM |
7275 | if (toc_addend != NULL) |
| 7276 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
| 7277 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
| 7278 | return 0; | |
| 854b41e7 | 7279 | if ((h == NULL || is_static_defined (h)) |
| 0d4792f7 AM |
7280 | && (next_r == -1 || next_r == -2)) |
| 7281 | return 1 - next_r; | |
| 951fd09b | 7282 | return 1; |
| 411e1bfb AM |
7283 | } |
| 7284 | ||
| 3b421ab3 AM |
7285 | /* Find (or create) an entry in the tocsave hash table. */ |
| 7286 | ||
| 7287 | static struct tocsave_entry * | |
| 7288 | tocsave_find (struct ppc_link_hash_table *htab, | |
| 7289 | enum insert_option insert, | |
| 7290 | Elf_Internal_Sym **local_syms, | |
| 7291 | const Elf_Internal_Rela *irela, | |
| 7292 | bfd *ibfd) | |
| 7293 | { | |
| 7294 | unsigned long r_indx; | |
| 7295 | struct elf_link_hash_entry *h; | |
| 7296 | Elf_Internal_Sym *sym; | |
| 7297 | struct tocsave_entry ent, *p; | |
| 7298 | hashval_t hash; | |
| 7299 | struct tocsave_entry **slot; | |
| 7300 | ||
| 7301 | r_indx = ELF64_R_SYM (irela->r_info); | |
| 7302 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
| 7303 | return NULL; | |
| 7304 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
| 7305 | { | |
| 7306 | (*_bfd_error_handler) | |
| 7307 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
| 7308 | return NULL; | |
| 7309 | } | |
| 7310 | ||
| 7311 | if (h != NULL) | |
| 7312 | ent.offset = h->root.u.def.value; | |
| 7313 | else | |
| 7314 | ent.offset = sym->st_value; | |
| 7315 | ent.offset += irela->r_addend; | |
| 7316 | ||
| 7317 | hash = tocsave_htab_hash (&ent); | |
| 7318 | slot = ((struct tocsave_entry **) | |
| 7319 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
| 7320 | if (slot == NULL) | |
| 7321 | return NULL; | |
| 7322 | ||
| 7323 | if (*slot == NULL) | |
| 7324 | { | |
| 7325 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
| 7326 | if (p == NULL) | |
| 7327 | return NULL; | |
| 7328 | *p = ent; | |
| 7329 | *slot = p; | |
| 7330 | } | |
| 7331 | return *slot; | |
| 7332 | } | |
| 7333 | ||
| 754021d0 | 7334 | /* Adjust all global syms defined in opd sections. In gcc generated |
| 8387904d | 7335 | code for the old ABI, these will already have been done. */ |
| 754021d0 AM |
7336 | |
| 7337 | static bfd_boolean | |
| 7338 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 7339 | { | |
| 7340 | struct ppc_link_hash_entry *eh; | |
| 7341 | asection *sym_sec; | |
| 74f0fb50 | 7342 | struct _opd_sec_data *opd; |
| 754021d0 AM |
7343 | |
| 7344 | if (h->root.type == bfd_link_hash_indirect) | |
| 7345 | return TRUE; | |
| 7346 | ||
| 754021d0 AM |
7347 | if (h->root.type != bfd_link_hash_defined |
| 7348 | && h->root.type != bfd_link_hash_defweak) | |
| 7349 | return TRUE; | |
| 7350 | ||
| 7351 | eh = (struct ppc_link_hash_entry *) h; | |
| 7352 | if (eh->adjust_done) | |
| 7353 | return TRUE; | |
| 7354 | ||
| 7355 | sym_sec = eh->elf.root.u.def.section; | |
| 74f0fb50 AM |
7356 | opd = get_opd_info (sym_sec); |
| 7357 | if (opd != NULL && opd->adjust != NULL) | |
| 754021d0 | 7358 | { |
| 74f0fb50 | 7359 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
| 4025353c AM |
7360 | if (adjust == -1) |
| 7361 | { | |
| 7362 | /* This entry has been deleted. */ | |
| b3fac117 | 7363 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
| 81688140 AM |
7364 | if (dsec == NULL) |
| 7365 | { | |
| 7366 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
| dbaa2011 | 7367 | if (discarded_section (dsec)) |
| 81688140 | 7368 | { |
| b3fac117 | 7369 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
| 81688140 AM |
7370 | break; |
| 7371 | } | |
| 7372 | } | |
| 4025353c | 7373 | eh->elf.root.u.def.value = 0; |
| 81688140 | 7374 | eh->elf.root.u.def.section = dsec; |
| 4025353c AM |
7375 | } |
| 7376 | else | |
| 7377 | eh->elf.root.u.def.value += adjust; | |
| 754021d0 AM |
7378 | eh->adjust_done = 1; |
| 7379 | } | |
| 7380 | return TRUE; | |
| 7381 | } | |
| 7382 | ||
| 8c1d1bb8 | 7383 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
| 19e08130 | 7384 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
| 8c1d1bb8 AM |
7385 | have already been determined. */ |
| 7386 | ||
| 7387 | static bfd_boolean | |
| 7388 | dec_dynrel_count (bfd_vma r_info, | |
| 7389 | asection *sec, | |
| 7390 | struct bfd_link_info *info, | |
| 7391 | Elf_Internal_Sym **local_syms, | |
| 7392 | struct elf_link_hash_entry *h, | |
| 19e08130 | 7393 | Elf_Internal_Sym *sym) |
| 8c1d1bb8 AM |
7394 | { |
| 7395 | enum elf_ppc64_reloc_type r_type; | |
| 19e08130 | 7396 | asection *sym_sec = NULL; |
| 8c1d1bb8 AM |
7397 | |
| 7398 | /* Can this reloc be dynamic? This switch, and later tests here | |
| 7399 | should be kept in sync with the code in check_relocs. */ | |
| 7400 | r_type = ELF64_R_TYPE (r_info); | |
| 7401 | switch (r_type) | |
| 7402 | { | |
| 7403 | default: | |
| 7404 | return TRUE; | |
| 7405 | ||
| 7406 | case R_PPC64_TPREL16: | |
| 7407 | case R_PPC64_TPREL16_LO: | |
| 7408 | case R_PPC64_TPREL16_HI: | |
| 7409 | case R_PPC64_TPREL16_HA: | |
| 7410 | case R_PPC64_TPREL16_DS: | |
| 7411 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
7412 | case R_PPC64_TPREL16_HIGH: |
| 7413 | case R_PPC64_TPREL16_HIGHA: | |
| 8c1d1bb8 AM |
7414 | case R_PPC64_TPREL16_HIGHER: |
| 7415 | case R_PPC64_TPREL16_HIGHERA: | |
| 7416 | case R_PPC64_TPREL16_HIGHEST: | |
| 7417 | case R_PPC64_TPREL16_HIGHESTA: | |
| 7418 | if (!info->shared) | |
| 7419 | return TRUE; | |
| 7420 | ||
| 7421 | case R_PPC64_TPREL64: | |
| 7422 | case R_PPC64_DTPMOD64: | |
| 7423 | case R_PPC64_DTPREL64: | |
| 7424 | case R_PPC64_ADDR64: | |
| 7425 | case R_PPC64_REL30: | |
| 7426 | case R_PPC64_REL32: | |
| 7427 | case R_PPC64_REL64: | |
| 7428 | case R_PPC64_ADDR14: | |
| 7429 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 7430 | case R_PPC64_ADDR14_BRTAKEN: | |
| 7431 | case R_PPC64_ADDR16: | |
| 7432 | case R_PPC64_ADDR16_DS: | |
| 7433 | case R_PPC64_ADDR16_HA: | |
| 7434 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
7435 | case R_PPC64_ADDR16_HIGH: |
| 7436 | case R_PPC64_ADDR16_HIGHA: | |
| 8c1d1bb8 AM |
7437 | case R_PPC64_ADDR16_HIGHER: |
| 7438 | case R_PPC64_ADDR16_HIGHERA: | |
| 7439 | case R_PPC64_ADDR16_HIGHEST: | |
| 7440 | case R_PPC64_ADDR16_HIGHESTA: | |
| 7441 | case R_PPC64_ADDR16_LO: | |
| 7442 | case R_PPC64_ADDR16_LO_DS: | |
| 7443 | case R_PPC64_ADDR24: | |
| 7444 | case R_PPC64_ADDR32: | |
| 7445 | case R_PPC64_UADDR16: | |
| 7446 | case R_PPC64_UADDR32: | |
| 7447 | case R_PPC64_UADDR64: | |
| 7448 | case R_PPC64_TOC: | |
| 7449 | break; | |
| 7450 | } | |
| 7451 | ||
| 7452 | if (local_syms != NULL) | |
| 7453 | { | |
| 7454 | unsigned long r_symndx; | |
| 8c1d1bb8 AM |
7455 | bfd *ibfd = sec->owner; |
| 7456 | ||
| 7457 | r_symndx = ELF64_R_SYM (r_info); | |
| 7458 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
| 7459 | return FALSE; | |
| 7460 | } | |
| 7461 | ||
| 7462 | if ((info->shared | |
| 1d483afe | 7463 | && (must_be_dyn_reloc (info, r_type) |
| 8c1d1bb8 | 7464 | || (h != NULL |
| 198f1157 | 7465 | && (!SYMBOLIC_BIND (info, h) |
| 8c1d1bb8 AM |
7466 | || h->root.type == bfd_link_hash_defweak |
| 7467 | || !h->def_regular)))) | |
| 7468 | || (ELIMINATE_COPY_RELOCS | |
| 7469 | && !info->shared | |
| 7470 | && h != NULL | |
| 7471 | && (h->root.type == bfd_link_hash_defweak | |
| 7472 | || !h->def_regular))) | |
| 7473 | ; | |
| 7474 | else | |
| 7475 | return TRUE; | |
| 7476 | ||
| 7477 | if (h != NULL) | |
| 6edfbbad | 7478 | { |
| 19e08130 AM |
7479 | struct elf_dyn_relocs *p; |
| 7480 | struct elf_dyn_relocs **pp; | |
| 7481 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
| 7482 | ||
| 7483 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
| 7484 | with local syms for a given section. Also, symbol flags are | |
| 7485 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
| 7486 | report a dynreloc miscount. */ | |
| 7487 | if (*pp == NULL && info->gc_sections) | |
| 7488 | return TRUE; | |
| 7489 | ||
| 7490 | while ((p = *pp) != NULL) | |
| 60124e18 | 7491 | { |
| 19e08130 AM |
7492 | if (p->sec == sec) |
| 7493 | { | |
| 7494 | if (!must_be_dyn_reloc (info, r_type)) | |
| 7495 | p->pc_count -= 1; | |
| 7496 | p->count -= 1; | |
| 7497 | if (p->count == 0) | |
| 7498 | *pp = p->next; | |
| 7499 | return TRUE; | |
| 7500 | } | |
| 7501 | pp = &p->next; | |
| 60124e18 | 7502 | } |
| 6edfbbad | 7503 | } |
| 19e08130 AM |
7504 | else |
| 7505 | { | |
| 7506 | struct ppc_dyn_relocs *p; | |
| 7507 | struct ppc_dyn_relocs **pp; | |
| 7508 | void *vpp; | |
| 7509 | bfd_boolean is_ifunc; | |
| 8c1d1bb8 | 7510 | |
| 19e08130 AM |
7511 | if (local_syms == NULL) |
| 7512 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
| 7513 | if (sym_sec == NULL) | |
| 7514 | sym_sec = sec; | |
| c57da1a7 | 7515 | |
| 19e08130 AM |
7516 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
| 7517 | pp = (struct ppc_dyn_relocs **) vpp; | |
| 7518 | ||
| 7519 | if (*pp == NULL && info->gc_sections) | |
| 7520 | return TRUE; | |
| 7521 | ||
| 7522 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
| 7523 | while ((p = *pp) != NULL) | |
| 8c1d1bb8 | 7524 | { |
| 19e08130 AM |
7525 | if (p->sec == sec && p->ifunc == is_ifunc) |
| 7526 | { | |
| 7527 | p->count -= 1; | |
| 7528 | if (p->count == 0) | |
| 7529 | *pp = p->next; | |
| 7530 | return TRUE; | |
| 7531 | } | |
| 7532 | pp = &p->next; | |
| 8c1d1bb8 | 7533 | } |
| 8c1d1bb8 AM |
7534 | } |
| 7535 | ||
| 8de848d8 | 7536 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
| 25f53a85 | 7537 | sec->owner, sec); |
| 8c1d1bb8 AM |
7538 | bfd_set_error (bfd_error_bad_value); |
| 7539 | return FALSE; | |
| 7540 | } | |
| 7541 | ||
| 754021d0 AM |
7542 | /* Remove unused Official Procedure Descriptor entries. Currently we |
| 7543 | only remove those associated with functions in discarded link-once | |
| 7544 | sections, or weakly defined functions that have been overridden. It | |
| 7545 | would be possible to remove many more entries for statically linked | |
| 7546 | applications. */ | |
| 7547 | ||
| b34976b6 | 7548 | bfd_boolean |
| e7d1c40c | 7549 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
| 1e2f5b6e AM |
7550 | { |
| 7551 | bfd *ibfd; | |
| 754021d0 | 7552 | bfd_boolean some_edited = FALSE; |
| 3f764659 | 7553 | asection *need_pad = NULL; |
| e7d1c40c AM |
7554 | struct ppc_link_hash_table *htab; |
| 7555 | ||
| 7556 | htab = ppc_hash_table (info); | |
| 7557 | if (htab == NULL) | |
| 7558 | return FALSE; | |
| 1e2f5b6e | 7559 | |
| c72f2fb2 | 7560 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 1e2f5b6e AM |
7561 | { |
| 7562 | asection *sec; | |
| 7563 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 7564 | Elf_Internal_Shdr *symtab_hdr; | |
| 6cdc0ccc | 7565 | Elf_Internal_Sym *local_syms; |
| 1e2f5b6e | 7566 | bfd_vma offset; |
| 74f0fb50 | 7567 | struct _opd_sec_data *opd; |
| 3f764659 JJ |
7568 | bfd_boolean need_edit, add_aux_fields; |
| 7569 | bfd_size_type cnt_16b = 0; | |
| 1e2f5b6e | 7570 | |
| 854b41e7 AM |
7571 | if (!is_ppc64_elf (ibfd)) |
| 7572 | continue; | |
| 7573 | ||
| 1e2f5b6e | 7574 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
| 46de2a7c | 7575 | if (sec == NULL || sec->size == 0) |
| 1e2f5b6e AM |
7576 | continue; |
| 7577 | ||
| dbaa2011 | 7578 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
| 4b85d634 AM |
7579 | continue; |
| 7580 | ||
| 1e2f5b6e AM |
7581 | if (sec->output_section == bfd_abs_section_ptr) |
| 7582 | continue; | |
| 7583 | ||
| 7584 | /* Look through the section relocs. */ | |
| 7585 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
| 7586 | continue; | |
| 7587 | ||
| 6cdc0ccc | 7588 | local_syms = NULL; |
| 0ffa91dd | 7589 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 1e2f5b6e AM |
7590 | |
| 7591 | /* Read the relocations. */ | |
| 4ce794b7 | 7592 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
| 45d6a902 | 7593 | info->keep_memory); |
| 1e2f5b6e | 7594 | if (relstart == NULL) |
| b34976b6 | 7595 | return FALSE; |
| 1e2f5b6e AM |
7596 | |
| 7597 | /* First run through the relocs to check they are sane, and to | |
| 7598 | determine whether we need to edit this opd section. */ | |
| b34976b6 | 7599 | need_edit = FALSE; |
| 3f764659 | 7600 | need_pad = sec; |
| 1e2f5b6e AM |
7601 | offset = 0; |
| 7602 | relend = relstart + sec->reloc_count; | |
| 50bc7936 | 7603 | for (rel = relstart; rel < relend; ) |
| 1e2f5b6e | 7604 | { |
| 04c9666a | 7605 | enum elf_ppc64_reloc_type r_type; |
| 1e2f5b6e AM |
7606 | unsigned long r_symndx; |
| 7607 | asection *sym_sec; | |
| 7608 | struct elf_link_hash_entry *h; | |
| 7609 | Elf_Internal_Sym *sym; | |
| 7610 | ||
| 3f764659 | 7611 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
| 1e2f5b6e AM |
7612 | only interested in the reloc pointing to a function entry |
| 7613 | point. */ | |
| 50bc7936 AM |
7614 | if (rel->r_offset != offset |
| 7615 | || rel + 1 >= relend | |
| 7616 | || (rel + 1)->r_offset != offset + 8) | |
| 1e2f5b6e AM |
7617 | { |
| 7618 | /* If someone messes with .opd alignment then after a | |
| 7619 | "ld -r" we might have padding in the middle of .opd. | |
| 7620 | Also, there's nothing to prevent someone putting | |
| 7621 | something silly in .opd with the assembler. No .opd | |
| b34976b6 | 7622 | optimization for them! */ |
| 3f764659 | 7623 | broken_opd: |
| 1e2f5b6e | 7624 | (*_bfd_error_handler) |
| d003868e | 7625 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
| b34976b6 | 7626 | need_edit = FALSE; |
| 1e2f5b6e AM |
7627 | break; |
| 7628 | } | |
| 7629 | ||
| 50bc7936 AM |
7630 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
| 7631 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
| 7632 | { | |
| 7633 | (*_bfd_error_handler) | |
| d003868e AM |
7634 | (_("%B: unexpected reloc type %u in .opd section"), |
| 7635 | ibfd, r_type); | |
| 50bc7936 AM |
7636 | need_edit = FALSE; |
| 7637 | break; | |
| 7638 | } | |
| 7639 | ||
| 1e2f5b6e | 7640 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 411e1bfb AM |
7641 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 7642 | r_symndx, ibfd)) | |
| 50bc7936 | 7643 | goto error_ret; |
| 1e2f5b6e AM |
7644 | |
| 7645 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
| 7646 | { | |
| 411e1bfb AM |
7647 | const char *sym_name; |
| 7648 | if (h != NULL) | |
| 7649 | sym_name = h->root.root.string; | |
| 7650 | else | |
| 26c61ae5 L |
7651 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
| 7652 | sym_sec); | |
| 411e1bfb | 7653 | |
| 1e2f5b6e | 7654 | (*_bfd_error_handler) |
| d003868e AM |
7655 | (_("%B: undefined sym `%s' in .opd section"), |
| 7656 | ibfd, sym_name); | |
| b34976b6 | 7657 | need_edit = FALSE; |
| 1e2f5b6e AM |
7658 | break; |
| 7659 | } | |
| 7660 | ||
| 51020317 AM |
7661 | /* opd entries are always for functions defined in the |
| 7662 | current input bfd. If the symbol isn't defined in the | |
| 7663 | input bfd, then we won't be using the function in this | |
| 7664 | bfd; It must be defined in a linkonce section in another | |
| 7665 | bfd, or is weak. It's also possible that we are | |
| 7666 | discarding the function due to a linker script /DISCARD/, | |
| 7667 | which we test for via the output_section. */ | |
| 7668 | if (sym_sec->owner != ibfd | |
| 7669 | || sym_sec->output_section == bfd_abs_section_ptr) | |
| b34976b6 | 7670 | need_edit = TRUE; |
| 1e2f5b6e | 7671 | |
| 50bc7936 | 7672 | rel += 2; |
| 3f764659 JJ |
7673 | if (rel == relend |
| 7674 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
| 7675 | { | |
| 7676 | if (sec->size == offset + 24) | |
| 7677 | { | |
| 7678 | need_pad = NULL; | |
| 7679 | break; | |
| 7680 | } | |
| 7681 | if (rel == relend && sec->size == offset + 16) | |
| 7682 | { | |
| 7683 | cnt_16b++; | |
| 7684 | break; | |
| 7685 | } | |
| 7686 | goto broken_opd; | |
| 7687 | } | |
| 7688 | ||
| 7689 | if (rel->r_offset == offset + 24) | |
| 7690 | offset += 24; | |
| 7691 | else if (rel->r_offset != offset + 16) | |
| 7692 | goto broken_opd; | |
| 7693 | else if (rel + 1 < relend | |
| 7694 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
| 7695 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
| 7696 | { | |
| 7697 | offset += 16; | |
| 7698 | cnt_16b++; | |
| 7699 | } | |
| 7700 | else if (rel + 2 < relend | |
| 7701 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
| 7702 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
| 7703 | { | |
| 7704 | offset += 24; | |
| 7705 | rel += 1; | |
| 7706 | } | |
| 7707 | else | |
| 7708 | goto broken_opd; | |
| 1e2f5b6e AM |
7709 | } |
| 7710 | ||
| e7d1c40c | 7711 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
| 3f764659 JJ |
7712 | |
| 7713 | if (need_edit || add_aux_fields) | |
| 1e2f5b6e AM |
7714 | { |
| 7715 | Elf_Internal_Rela *write_rel; | |
| d4730f92 | 7716 | Elf_Internal_Shdr *rel_hdr; |
| 1e2f5b6e | 7717 | bfd_byte *rptr, *wptr; |
| 983bddc8 | 7718 | bfd_byte *new_contents; |
| b34976b6 | 7719 | bfd_boolean skip; |
| 3f764659 | 7720 | long opd_ent_size; |
| 74f0fb50 AM |
7721 | bfd_size_type amt; |
| 7722 | ||
| 983bddc8 | 7723 | new_contents = NULL; |
| 74f0fb50 AM |
7724 | amt = sec->size * sizeof (long) / 8; |
| 7725 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
| 33c0ec9d | 7726 | opd->adjust = bfd_zalloc (sec->owner, amt); |
| 74f0fb50 AM |
7727 | if (opd->adjust == NULL) |
| 7728 | return FALSE; | |
| 7729 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
| 1e2f5b6e AM |
7730 | |
| 7731 | /* This seems a waste of time as input .opd sections are all | |
| 7732 | zeros as generated by gcc, but I suppose there's no reason | |
| 7733 | this will always be so. We might start putting something in | |
| 7734 | the third word of .opd entries. */ | |
| 7735 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
| 7736 | { | |
| eea6121a AM |
7737 | bfd_byte *loc; |
| 7738 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
| 6cdc0ccc | 7739 | { |
| eea6121a AM |
7740 | if (loc != NULL) |
| 7741 | free (loc); | |
| 50bc7936 | 7742 | error_ret: |
| 6cdc0ccc AM |
7743 | if (local_syms != NULL |
| 7744 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 7745 | free (local_syms); | |
| 6cdc0ccc AM |
7746 | if (elf_section_data (sec)->relocs != relstart) |
| 7747 | free (relstart); | |
| b34976b6 | 7748 | return FALSE; |
| 6cdc0ccc | 7749 | } |
| 1e2f5b6e AM |
7750 | sec->contents = loc; |
| 7751 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 7752 | } | |
| 7753 | ||
| 7754 | elf_section_data (sec)->relocs = relstart; | |
| 7755 | ||
| 3f764659 | 7756 | new_contents = sec->contents; |
| 3f764659 JJ |
7757 | if (add_aux_fields) |
| 7758 | { | |
| 7759 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
| 7760 | if (new_contents == NULL) | |
| 7761 | return FALSE; | |
| 7762 | need_pad = FALSE; | |
| 3f764659 | 7763 | } |
| b4f4e59f AM |
7764 | wptr = new_contents; |
| 7765 | rptr = sec->contents; | |
| 3f764659 | 7766 | |
| 1e2f5b6e | 7767 | write_rel = relstart; |
| b34976b6 | 7768 | skip = FALSE; |
| 1e2f5b6e | 7769 | offset = 0; |
| 3f764659 | 7770 | opd_ent_size = 0; |
| 1e2f5b6e AM |
7771 | for (rel = relstart; rel < relend; rel++) |
| 7772 | { | |
| 50bc7936 AM |
7773 | unsigned long r_symndx; |
| 7774 | asection *sym_sec; | |
| 7775 | struct elf_link_hash_entry *h; | |
| 7776 | Elf_Internal_Sym *sym; | |
| 7777 | ||
| 7778 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7779 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| d37c89e5 | 7780 | r_symndx, ibfd)) |
| 50bc7936 AM |
7781 | goto error_ret; |
| 7782 | ||
| 1e2f5b6e AM |
7783 | if (rel->r_offset == offset) |
| 7784 | { | |
| 50bc7936 | 7785 | struct ppc_link_hash_entry *fdh = NULL; |
| 3f764659 JJ |
7786 | |
| 7787 | /* See if the .opd entry is full 24 byte or | |
| 7788 | 16 byte (with fd_aux entry overlapped with next | |
| 7789 | fd_func). */ | |
| 7790 | opd_ent_size = 24; | |
| 7791 | if ((rel + 2 == relend && sec->size == offset + 16) | |
| 7792 | || (rel + 3 < relend | |
| 7793 | && rel[2].r_offset == offset + 16 | |
| 7794 | && rel[3].r_offset == offset + 24 | |
| 7795 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
| 7796 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
| 7797 | opd_ent_size = 16; | |
| 7798 | ||
| 4025353c AM |
7799 | if (h != NULL |
| 7800 | && h->root.root.string[0] == '.') | |
| c4f68ce3 | 7801 | { |
| e7d1c40c | 7802 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab); |
| c4f68ce3 AM |
7803 | if (fdh != NULL |
| 7804 | && fdh->elf.root.type != bfd_link_hash_defined | |
| 7805 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
| 7806 | fdh = NULL; | |
| 7807 | } | |
| 1e2f5b6e | 7808 | |
| 51020317 AM |
7809 | skip = (sym_sec->owner != ibfd |
| 7810 | || sym_sec->output_section == bfd_abs_section_ptr); | |
| a4aa0fb7 AM |
7811 | if (skip) |
| 7812 | { | |
| 4025353c | 7813 | if (fdh != NULL && sym_sec->owner == ibfd) |
| a4aa0fb7 AM |
7814 | { |
| 7815 | /* Arrange for the function descriptor sym | |
| 7816 | to be dropped. */ | |
| d6fe2dc1 AM |
7817 | fdh->elf.root.u.def.value = 0; |
| 7818 | fdh->elf.root.u.def.section = sym_sec; | |
| a4aa0fb7 | 7819 | } |
| 74f0fb50 | 7820 | opd->adjust[rel->r_offset / 8] = -1; |
| a4aa0fb7 AM |
7821 | } |
| 7822 | else | |
| 1e2f5b6e AM |
7823 | { |
| 7824 | /* We'll be keeping this opd entry. */ | |
| 7825 | ||
| 4025353c | 7826 | if (fdh != NULL) |
| 1e2f5b6e | 7827 | { |
| 754021d0 AM |
7828 | /* Redefine the function descriptor symbol to |
| 7829 | this location in the opd section. It is | |
| 7830 | necessary to update the value here rather | |
| 7831 | than using an array of adjustments as we do | |
| 7832 | for local symbols, because various places | |
| 7833 | in the generic ELF code use the value | |
| 7834 | stored in u.def.value. */ | |
| 3f764659 | 7835 | fdh->elf.root.u.def.value = wptr - new_contents; |
| 754021d0 | 7836 | fdh->adjust_done = 1; |
| 1e2f5b6e | 7837 | } |
| 754021d0 AM |
7838 | |
| 7839 | /* Local syms are a bit tricky. We could | |
| 7840 | tweak them as they can be cached, but | |
| 7841 | we'd need to look through the local syms | |
| 7842 | for the function descriptor sym which we | |
| 7843 | don't have at the moment. So keep an | |
| 7844 | array of adjustments. */ | |
| 74f0fb50 | 7845 | opd->adjust[rel->r_offset / 8] |
| 3f764659 | 7846 | = (wptr - new_contents) - (rptr - sec->contents); |
| 1e2f5b6e AM |
7847 | |
| 7848 | if (wptr != rptr) | |
| 3f764659 JJ |
7849 | memcpy (wptr, rptr, opd_ent_size); |
| 7850 | wptr += opd_ent_size; | |
| 7851 | if (add_aux_fields && opd_ent_size == 16) | |
| 7852 | { | |
| 7853 | memset (wptr, '\0', 8); | |
| 7854 | wptr += 8; | |
| 7855 | } | |
| 1e2f5b6e | 7856 | } |
| 3f764659 JJ |
7857 | rptr += opd_ent_size; |
| 7858 | offset += opd_ent_size; | |
| 1e2f5b6e AM |
7859 | } |
| 7860 | ||
| 50bc7936 AM |
7861 | if (skip) |
| 7862 | { | |
| 60124e18 AM |
7863 | if (!NO_OPD_RELOCS |
| 7864 | && !info->relocatable | |
| 18d944df | 7865 | && !dec_dynrel_count (rel->r_info, sec, info, |
| 19e08130 | 7866 | NULL, h, sym)) |
| 8c1d1bb8 | 7867 | goto error_ret; |
| 50bc7936 AM |
7868 | } |
| 7869 | else | |
| 1e2f5b6e | 7870 | { |
| 50bc7936 AM |
7871 | /* We need to adjust any reloc offsets to point to the |
| 7872 | new opd entries. While we're at it, we may as well | |
| 7873 | remove redundant relocs. */ | |
| 74f0fb50 | 7874 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
| 1e2f5b6e AM |
7875 | if (write_rel != rel) |
| 7876 | memcpy (write_rel, rel, sizeof (*rel)); | |
| 7877 | ++write_rel; | |
| 7878 | } | |
| 7879 | } | |
| 7880 | ||
| 3f764659 | 7881 | sec->size = wptr - new_contents; |
| 1e2f5b6e | 7882 | sec->reloc_count = write_rel - relstart; |
| 3f764659 JJ |
7883 | if (add_aux_fields) |
| 7884 | { | |
| 7885 | free (sec->contents); | |
| 7886 | sec->contents = new_contents; | |
| 7887 | } | |
| 7888 | ||
| 05bf9422 | 7889 | /* Fudge the header size too, as this is used later in |
| cdcf6e38 | 7890 | elf_bfd_final_link if we are emitting relocs. */ |
| d4730f92 BS |
7891 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
| 7892 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
| 754021d0 | 7893 | some_edited = TRUE; |
| 1e2f5b6e | 7894 | } |
| 6cdc0ccc | 7895 | else if (elf_section_data (sec)->relocs != relstart) |
| 1e2f5b6e | 7896 | free (relstart); |
| 6cdc0ccc | 7897 | |
| 411e1bfb AM |
7898 | if (local_syms != NULL |
| 7899 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 7900 | { | |
| 7901 | if (!info->keep_memory) | |
| 7902 | free (local_syms); | |
| 7903 | else | |
| 7904 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 7905 | } | |
| 7906 | } | |
| 7907 | ||
| 754021d0 AM |
7908 | if (some_edited) |
| 7909 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
| 7910 | ||
| 3f764659 JJ |
7911 | /* If we are doing a final link and the last .opd entry is just 16 byte |
| 7912 | long, add a 8 byte padding after it. */ | |
| 7913 | if (need_pad != NULL && !info->relocatable) | |
| 7914 | { | |
| 7915 | bfd_byte *p; | |
| 7916 | ||
| 7917 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
| 7918 | { | |
| 7919 | BFD_ASSERT (need_pad->size > 0); | |
| 7920 | ||
| 7921 | p = bfd_malloc (need_pad->size + 8); | |
| 7922 | if (p == NULL) | |
| 7923 | return FALSE; | |
| 699733f6 | 7924 | |
| 3f764659 JJ |
7925 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
| 7926 | p, 0, need_pad->size)) | |
| 7927 | return FALSE; | |
| 7928 | ||
| 7929 | need_pad->contents = p; | |
| 7930 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 7931 | } | |
| 7932 | else | |
| 7933 | { | |
| 7934 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
| 7935 | if (p == NULL) | |
| 7936 | return FALSE; | |
| 7937 | ||
| 7938 | need_pad->contents = p; | |
| 7939 | } | |
| 7940 | ||
| 7941 | memset (need_pad->contents + need_pad->size, 0, 8); | |
| 7942 | need_pad->size += 8; | |
| 7943 | } | |
| 7944 | ||
| 411e1bfb AM |
7945 | return TRUE; |
| 7946 | } | |
| 7947 | ||
| e1918d23 | 7948 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
| 411e1bfb | 7949 | |
| e1918d23 | 7950 | asection * |
| e7d1c40c | 7951 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
| 411e1bfb | 7952 | { |
| 411e1bfb AM |
7953 | struct ppc_link_hash_table *htab; |
| 7954 | ||
| 411e1bfb | 7955 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
7956 | if (htab == NULL) |
| 7957 | return NULL; | |
| 7958 | ||
| ee67d69a AM |
7959 | if (abiversion (info->output_bfd) == 1) |
| 7960 | htab->opd_abi = 1; | |
| 7961 | ||
| e7d1c40c | 7962 | if (htab->params->no_multi_toc) |
| 33c0ec9d AM |
7963 | htab->do_multi_toc = 0; |
| 7964 | else if (!htab->do_multi_toc) | |
| e7d1c40c | 7965 | htab->params->no_multi_toc = 1; |
| 33c0ec9d | 7966 | |
| 3a71aa26 AM |
7967 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
| 7968 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 7969 | FALSE, FALSE, TRUE)); | |
| a7f2871e AM |
7970 | /* Move dynamic linking info to the function descriptor sym. */ |
| 7971 | if (htab->tls_get_addr != NULL) | |
| 7972 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
| 3a71aa26 AM |
7973 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
| 7974 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
| 7975 | FALSE, FALSE, TRUE)); | |
| e7d1c40c | 7976 | if (!htab->params->no_tls_get_addr_opt) |
| a7f2871e AM |
7977 | { |
| 7978 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
| 7979 | ||
| 7980 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
| 7981 | FALSE, FALSE, TRUE); | |
| 7982 | if (opt != NULL) | |
| 7983 | func_desc_adjust (opt, info); | |
| 7984 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
| 7985 | FALSE, FALSE, TRUE); | |
| 7986 | if (opt_fd != NULL | |
| 7987 | && (opt_fd->root.type == bfd_link_hash_defined | |
| 7988 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
| 7989 | { | |
| 7990 | /* If glibc supports an optimized __tls_get_addr call stub, | |
| 7991 | signalled by the presence of __tls_get_addr_opt, and we'll | |
| 7992 | be calling __tls_get_addr via a plt call stub, then | |
| 7993 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
| 7994 | tga_fd = &htab->tls_get_addr_fd->elf; | |
| 7995 | if (htab->elf.dynamic_sections_created | |
| 7996 | && tga_fd != NULL | |
| 7997 | && (tga_fd->type == STT_FUNC | |
| 7998 | || tga_fd->needs_plt) | |
| 7999 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
| 8000 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
| 8001 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
| 8002 | { | |
| 8003 | struct plt_entry *ent; | |
| 8004 | ||
| 8005 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
| 8006 | if (ent->plt.refcount > 0) | |
| 8007 | break; | |
| 8008 | if (ent != NULL) | |
| 8009 | { | |
| 8010 | tga_fd->root.type = bfd_link_hash_indirect; | |
| 8011 | tga_fd->root.u.i.link = &opt_fd->root; | |
| 8012 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
| 8013 | if (opt_fd->dynindx != -1) | |
| 8014 | { | |
| 8015 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
| 8016 | opt_fd->dynindx = -1; | |
| 8017 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 8018 | opt_fd->dynstr_index); | |
| 8019 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
| 854b41e7 | 8020 | return NULL; |
| a7f2871e AM |
8021 | } |
| 8022 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
| 8023 | tga = &htab->tls_get_addr->elf; | |
| 8024 | if (opt != NULL && tga != NULL) | |
| 8025 | { | |
| 8026 | tga->root.type = bfd_link_hash_indirect; | |
| 8027 | tga->root.u.i.link = &opt->root; | |
| 8028 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
| 8029 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
| 8030 | tga->forced_local); | |
| 8031 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
| 8032 | } | |
| 8033 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
| 8034 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
| 8035 | if (htab->tls_get_addr != NULL) | |
| 8036 | { | |
| 8037 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
| 8038 | htab->tls_get_addr->is_func = 1; | |
| 8039 | } | |
| 8040 | } | |
| 8041 | } | |
| 8042 | } | |
| 8043 | else | |
| e7d1c40c | 8044 | htab->params->no_tls_get_addr_opt = TRUE; |
| a7f2871e | 8045 | } |
| 33c0ec9d | 8046 | return _bfd_elf_tls_setup (info->output_bfd, info); |
| 3a71aa26 | 8047 | } |
| 8387904d | 8048 | |
| 3a71aa26 AM |
8049 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
| 8050 | HASH1 or HASH2. */ | |
| 8387904d | 8051 | |
| 3a71aa26 AM |
8052 | static bfd_boolean |
| 8053 | branch_reloc_hash_match (const bfd *ibfd, | |
| 8054 | const Elf_Internal_Rela *rel, | |
| 8055 | const struct ppc_link_hash_entry *hash1, | |
| 8056 | const struct ppc_link_hash_entry *hash2) | |
| 8057 | { | |
| 8058 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 8059 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
| 8060 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8061 | ||
| e054468f | 8062 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
| 8387904d | 8063 | { |
| 3a71aa26 AM |
8064 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
| 8065 | struct elf_link_hash_entry *h; | |
| 8387904d | 8066 | |
| 3a71aa26 | 8067 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| b31867b6 | 8068 | h = elf_follow_link (h); |
| 3a71aa26 AM |
8069 | if (h == &hash1->elf || h == &hash2->elf) |
| 8070 | return TRUE; | |
| a48ebf4d | 8071 | } |
| 3a71aa26 | 8072 | return FALSE; |
| 951fd09b | 8073 | } |
| 411e1bfb | 8074 | |
| 951fd09b AM |
8075 | /* Run through all the TLS relocs looking for optimization |
| 8076 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
| 8077 | a preliminary section layout so that we know the TLS segment | |
| 8078 | offsets. We can't optimize earlier because some optimizations need | |
| 8079 | to know the tp offset, and we need to optimize before allocating | |
| 8080 | dynamic relocations. */ | |
| 8081 | ||
| 8082 | bfd_boolean | |
| 33c0ec9d | 8083 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
| 951fd09b AM |
8084 | { |
| 8085 | bfd *ibfd; | |
| 8086 | asection *sec; | |
| 8087 | struct ppc_link_hash_table *htab; | |
| 663a1470 | 8088 | unsigned char *toc_ref; |
| 102890f0 | 8089 | int pass; |
| 951fd09b | 8090 | |
| 1d483afe | 8091 | if (info->relocatable || !info->executable) |
| 411e1bfb AM |
8092 | return TRUE; |
| 8093 | ||
| 951fd09b | 8094 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
8095 | if (htab == NULL) |
| 8096 | return FALSE; | |
| 8097 | ||
| 663a1470 AM |
8098 | /* Make two passes over the relocs. On the first pass, mark toc |
| 8099 | entries involved with tls relocs, and check that tls relocs | |
| 8100 | involved in setting up a tls_get_addr call are indeed followed by | |
| 8101 | such a call. If they are not, we can't do any tls optimization. | |
| 8102 | On the second pass twiddle tls_mask flags to notify | |
| 8103 | relocate_section that optimization can be done, and adjust got | |
| 8104 | and plt refcounts. */ | |
| 8105 | toc_ref = NULL; | |
| 8106 | for (pass = 0; pass < 2; ++pass) | |
| c72f2fb2 | 8107 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 663a1470 AM |
8108 | { |
| 8109 | Elf_Internal_Sym *locsyms = NULL; | |
| 8110 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
| 8111 | ||
| 102890f0 AM |
8112 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
| 8113 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
| 8114 | { | |
| 8115 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 663a1470 | 8116 | bfd_boolean found_tls_get_addr_arg = 0; |
| 411e1bfb | 8117 | |
| 102890f0 AM |
8118 | /* Read the relocations. */ |
| 8119 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 8120 | info->keep_memory); | |
| 8121 | if (relstart == NULL) | |
| 2915c55b JK |
8122 | { |
| 8123 | free (toc_ref); | |
| 8124 | return FALSE; | |
| 8125 | } | |
| 411e1bfb | 8126 | |
| 102890f0 AM |
8127 | relend = relstart + sec->reloc_count; |
| 8128 | for (rel = relstart; rel < relend; rel++) | |
| 8129 | { | |
| 8130 | enum elf_ppc64_reloc_type r_type; | |
| 8131 | unsigned long r_symndx; | |
| 8132 | struct elf_link_hash_entry *h; | |
| 8133 | Elf_Internal_Sym *sym; | |
| 8134 | asection *sym_sec; | |
| f961d9dd AM |
8135 | unsigned char *tls_mask; |
| 8136 | unsigned char tls_set, tls_clear, tls_type = 0; | |
| 102890f0 AM |
8137 | bfd_vma value; |
| 8138 | bfd_boolean ok_tprel, is_local; | |
| 8139 | long toc_ref_index = 0; | |
| 8140 | int expecting_tls_get_addr = 0; | |
| 663a1470 | 8141 | bfd_boolean ret = FALSE; |
| 411e1bfb | 8142 | |
| 102890f0 AM |
8143 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 8144 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
| 8145 | r_symndx, ibfd)) | |
| 8146 | { | |
| 8147 | err_free_rel: | |
| 8148 | if (elf_section_data (sec)->relocs != relstart) | |
| 8149 | free (relstart); | |
| 8150 | if (toc_ref != NULL) | |
| 8151 | free (toc_ref); | |
| 8152 | if (locsyms != NULL | |
| 0ffa91dd | 8153 | && (elf_symtab_hdr (ibfd).contents |
| 102890f0 AM |
8154 | != (unsigned char *) locsyms)) |
| 8155 | free (locsyms); | |
| 663a1470 | 8156 | return ret; |
| 102890f0 | 8157 | } |
| 411e1bfb | 8158 | |
| 102890f0 AM |
8159 | if (h != NULL) |
| 8160 | { | |
| 766bc656 AM |
8161 | if (h->root.type == bfd_link_hash_defined |
| 8162 | || h->root.type == bfd_link_hash_defweak) | |
| 8163 | value = h->root.u.def.value; | |
| 8164 | else if (h->root.type == bfd_link_hash_undefweak) | |
| 8165 | value = 0; | |
| 8166 | else | |
| 663a1470 AM |
8167 | { |
| 8168 | found_tls_get_addr_arg = 0; | |
| 8169 | continue; | |
| 8170 | } | |
| 102890f0 AM |
8171 | } |
| 8172 | else | |
| 8173 | /* Symbols referenced by TLS relocs must be of type | |
| 8174 | STT_TLS. So no need for .opd local sym adjust. */ | |
| 8175 | value = sym->st_value; | |
| 8176 | ||
| 8177 | ok_tprel = FALSE; | |
| 8178 | is_local = FALSE; | |
| 8179 | if (h == NULL | |
| 8180 | || !h->def_dynamic) | |
| 8181 | { | |
| 8182 | is_local = TRUE; | |
| 766bc656 AM |
8183 | if (h != NULL |
| 8184 | && h->root.type == bfd_link_hash_undefweak) | |
| 8185 | ok_tprel = TRUE; | |
| 8186 | else | |
| 8187 | { | |
| 8188 | value += sym_sec->output_offset; | |
| 8189 | value += sym_sec->output_section->vma; | |
| 8190 | value -= htab->elf.tls_sec->vma; | |
| 8191 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
| 8192 | < (bfd_vma) 1 << 32); | |
| 8193 | } | |
| 102890f0 | 8194 | } |
| 951fd09b | 8195 | |
| 102890f0 | 8196 | r_type = ELF64_R_TYPE (rel->r_info); |
| 663a1470 AM |
8197 | /* If this section has old-style __tls_get_addr calls |
| 8198 | without marker relocs, then check that each | |
| 8199 | __tls_get_addr call reloc is preceded by a reloc | |
| 8200 | that conceivably belongs to the __tls_get_addr arg | |
| 8201 | setup insn. If we don't find matching arg setup | |
| 8202 | relocs, don't do any tls optimization. */ | |
| 8203 | if (pass == 0 | |
| 8204 | && sec->has_tls_get_addr_call | |
| 8205 | && h != NULL | |
| 8206 | && (h == &htab->tls_get_addr->elf | |
| 8207 | || h == &htab->tls_get_addr_fd->elf) | |
| 8208 | && !found_tls_get_addr_arg | |
| 8209 | && is_branch_reloc (r_type)) | |
| 8210 | { | |
| 25f53a85 | 8211 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
| 663a1470 AM |
8212 | "TLS optimization disabled\n"), |
| 8213 | ibfd, sec, rel->r_offset); | |
| 8214 | ret = TRUE; | |
| 8215 | goto err_free_rel; | |
| 8216 | } | |
| 8217 | ||
| 8218 | found_tls_get_addr_arg = 0; | |
| 102890f0 AM |
8219 | switch (r_type) |
| 8220 | { | |
| 8221 | case R_PPC64_GOT_TLSLD16: | |
| 8222 | case R_PPC64_GOT_TLSLD16_LO: | |
| 8223 | expecting_tls_get_addr = 1; | |
| 663a1470 | 8224 | found_tls_get_addr_arg = 1; |
| 102890f0 AM |
8225 | /* Fall thru */ |
| 8226 | ||
| 8227 | case R_PPC64_GOT_TLSLD16_HI: | |
| 8228 | case R_PPC64_GOT_TLSLD16_HA: | |
| 8229 | /* These relocs should never be against a symbol | |
| 8230 | defined in a shared lib. Leave them alone if | |
| 8231 | that turns out to be the case. */ | |
| 8232 | if (!is_local) | |
| 8233 | continue; | |
| 411e1bfb | 8234 | |
| 102890f0 | 8235 | /* LD -> LE */ |
| 411e1bfb | 8236 | tls_set = 0; |
| 102890f0 AM |
8237 | tls_clear = TLS_LD; |
| 8238 | tls_type = TLS_TLS | TLS_LD; | |
| 8239 | break; | |
| 411e1bfb | 8240 | |
| 102890f0 AM |
8241 | case R_PPC64_GOT_TLSGD16: |
| 8242 | case R_PPC64_GOT_TLSGD16_LO: | |
| 8243 | expecting_tls_get_addr = 1; | |
| 663a1470 | 8244 | found_tls_get_addr_arg = 1; |
| 102890f0 AM |
8245 | /* Fall thru */ |
| 8246 | ||
| 8247 | case R_PPC64_GOT_TLSGD16_HI: | |
| 8248 | case R_PPC64_GOT_TLSGD16_HA: | |
| 8249 | if (ok_tprel) | |
| 8250 | /* GD -> LE */ | |
| 411e1bfb | 8251 | tls_set = 0; |
| 102890f0 AM |
8252 | else |
| 8253 | /* GD -> IE */ | |
| 8254 | tls_set = TLS_TLS | TLS_TPRELGD; | |
| 8255 | tls_clear = TLS_GD; | |
| 8256 | tls_type = TLS_TLS | TLS_GD; | |
| 8257 | break; | |
| 8258 | ||
| 8259 | case R_PPC64_GOT_TPREL16_DS: | |
| 8260 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 8261 | case R_PPC64_GOT_TPREL16_HI: | |
| 8262 | case R_PPC64_GOT_TPREL16_HA: | |
| 8263 | if (ok_tprel) | |
| 8264 | { | |
| 8265 | /* IE -> LE */ | |
| 8266 | tls_set = 0; | |
| 8267 | tls_clear = TLS_TPREL; | |
| 8268 | tls_type = TLS_TLS | TLS_TPREL; | |
| 8269 | break; | |
| 8270 | } | |
| 411e1bfb AM |
8271 | continue; |
| 8272 | ||
| 727fc41e AM |
8273 | case R_PPC64_TLSGD: |
| 8274 | case R_PPC64_TLSLD: | |
| 663a1470 AM |
8275 | found_tls_get_addr_arg = 1; |
| 8276 | /* Fall thru */ | |
| 8277 | ||
| 8278 | case R_PPC64_TLS: | |
| 8279 | case R_PPC64_TOC16: | |
| 8280 | case R_PPC64_TOC16_LO: | |
| 102890f0 AM |
8281 | if (sym_sec == NULL || sym_sec != toc) |
| 8282 | continue; | |
| 8283 | ||
| 8284 | /* Mark this toc entry as referenced by a TLS | |
| 8285 | code sequence. We can do that now in the | |
| 8286 | case of R_PPC64_TLS, and after checking for | |
| 8287 | tls_get_addr for the TOC16 relocs. */ | |
| 8288 | if (toc_ref == NULL) | |
| 663a1470 AM |
8289 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
| 8290 | if (toc_ref == NULL) | |
| 8291 | goto err_free_rel; | |
| 8292 | ||
| 102890f0 AM |
8293 | if (h != NULL) |
| 8294 | value = h->root.u.def.value; | |
| 8295 | else | |
| 8296 | value = sym->st_value; | |
| 8297 | value += rel->r_addend; | |
| 8298 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
| 663a1470 | 8299 | toc_ref_index = (value + toc->output_offset) / 8; |
| 727fc41e AM |
8300 | if (r_type == R_PPC64_TLS |
| 8301 | || r_type == R_PPC64_TLSGD | |
| 8302 | || r_type == R_PPC64_TLSLD) | |
| 102890f0 AM |
8303 | { |
| 8304 | toc_ref[toc_ref_index] = 1; | |
| 8305 | continue; | |
| 8306 | } | |
| 8307 | ||
| 8308 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
| 8309 | continue; | |
| 8310 | ||
| 8311 | tls_set = 0; | |
| 8312 | tls_clear = 0; | |
| 8313 | expecting_tls_get_addr = 2; | |
| 8314 | break; | |
| 8315 | ||
| 8316 | case R_PPC64_TPREL64: | |
| 8317 | if (pass == 0 | |
| 8318 | || sec != toc | |
| 8319 | || toc_ref == NULL | |
| 663a1470 | 8320 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
| 102890f0 AM |
8321 | continue; |
| 8322 | if (ok_tprel) | |
| 8323 | { | |
| 8324 | /* IE -> LE */ | |
| 8325 | tls_set = TLS_EXPLICIT; | |
| 8326 | tls_clear = TLS_TPREL; | |
| 8327 | break; | |
| 8328 | } | |
| 8329 | continue; | |
| 8330 | ||
| 8331 | case R_PPC64_DTPMOD64: | |
| 8332 | if (pass == 0 | |
| 8333 | || sec != toc | |
| 8334 | || toc_ref == NULL | |
| 663a1470 | 8335 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
| 102890f0 AM |
8336 | continue; |
| 8337 | if (rel + 1 < relend | |
| 8338 | && (rel[1].r_info | |
| 8339 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
| 8340 | && rel[1].r_offset == rel->r_offset + 8) | |
| 8341 | { | |
| 8342 | if (ok_tprel) | |
| 8343 | /* GD -> LE */ | |
| 8344 | tls_set = TLS_EXPLICIT | TLS_GD; | |
| 8345 | else | |
| 8346 | /* GD -> IE */ | |
| 8347 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
| 8348 | tls_clear = TLS_GD; | |
| 8349 | } | |
| 8350 | else | |
| 8351 | { | |
| 8352 | if (!is_local) | |
| 8353 | continue; | |
| 8354 | ||
| 8355 | /* LD -> LE */ | |
| 8356 | tls_set = TLS_EXPLICIT; | |
| 8357 | tls_clear = TLS_LD; | |
| 8358 | } | |
| 8359 | break; | |
| 8360 | ||
| 8361 | default: | |
| 8362 | continue; | |
| 8363 | } | |
| 8364 | ||
| 8365 | if (pass == 0) | |
| 8366 | { | |
| 727fc41e AM |
8367 | if (!expecting_tls_get_addr |
| 8368 | || !sec->has_tls_get_addr_call) | |
| 102890f0 AM |
8369 | continue; |
| 8370 | ||
| 3a71aa26 AM |
8371 | if (rel + 1 < relend |
| 8372 | && branch_reloc_hash_match (ibfd, rel + 1, | |
| 8373 | htab->tls_get_addr, | |
| 8374 | htab->tls_get_addr_fd)) | |
| 102890f0 | 8375 | { |
| 3a71aa26 | 8376 | if (expecting_tls_get_addr == 2) |
| 102890f0 | 8377 | { |
| 3a71aa26 | 8378 | /* Check for toc tls entries. */ |
| f961d9dd | 8379 | unsigned char *toc_tls; |
| 3a71aa26 AM |
8380 | int retval; |
| 8381 | ||
| 8382 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
| 8383 | &locsyms, | |
| 8384 | rel, ibfd); | |
| 8385 | if (retval == 0) | |
| 8386 | goto err_free_rel; | |
| 663a1470 AM |
8387 | if (toc_tls != NULL) |
| 8388 | { | |
| 8389 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
| 8390 | found_tls_get_addr_arg = 1; | |
| 8391 | if (retval > 1) | |
| 8392 | toc_ref[toc_ref_index] = 1; | |
| 8393 | } | |
| 102890f0 | 8394 | } |
| 3a71aa26 | 8395 | continue; |
| 102890f0 AM |
8396 | } |
| 8397 | ||
| 8398 | if (expecting_tls_get_addr != 1) | |
| 8399 | continue; | |
| 8400 | ||
| 8401 | /* Uh oh, we didn't find the expected call. We | |
| 8402 | could just mark this symbol to exclude it | |
| 8403 | from tls optimization but it's safer to skip | |
| 663a1470 | 8404 | the entire optimization. */ |
| 25f53a85 | 8405 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
| 663a1470 AM |
8406 | "TLS optimization disabled\n"), |
| 8407 | ibfd, sec, rel->r_offset); | |
| 8408 | ret = TRUE; | |
| 8409 | goto err_free_rel; | |
| 102890f0 AM |
8410 | } |
| 8411 | ||
| 85f7a9cb | 8412 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
| 102890f0 AM |
8413 | { |
| 8414 | struct plt_entry *ent; | |
| 8415 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
| 8416 | ent != NULL; | |
| 8417 | ent = ent->next) | |
| 8418 | if (ent->addend == 0) | |
| 411e1bfb | 8419 | { |
| 102890f0 | 8420 | if (ent->plt.refcount > 0) |
| 30038c59 | 8421 | { |
| 102890f0 AM |
8422 | ent->plt.refcount -= 1; |
| 8423 | expecting_tls_get_addr = 0; | |
| 30038c59 | 8424 | } |
| 102890f0 | 8425 | break; |
| 411e1bfb | 8426 | } |
| 102890f0 | 8427 | } |
| 411e1bfb | 8428 | |
| 85f7a9cb | 8429 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
| 102890f0 AM |
8430 | { |
| 8431 | struct plt_entry *ent; | |
| 8432 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
| 8433 | ent != NULL; | |
| 8434 | ent = ent->next) | |
| 8435 | if (ent->addend == 0) | |
| 411e1bfb | 8436 | { |
| 102890f0 AM |
8437 | if (ent->plt.refcount > 0) |
| 8438 | ent->plt.refcount -= 1; | |
| 8439 | break; | |
| 411e1bfb | 8440 | } |
| 102890f0 | 8441 | } |
| 411e1bfb | 8442 | |
| 102890f0 | 8443 | if (tls_clear == 0) |
| 30038c59 AM |
8444 | continue; |
| 8445 | ||
| 102890f0 AM |
8446 | if ((tls_set & TLS_EXPLICIT) == 0) |
| 8447 | { | |
| 8448 | struct got_entry *ent; | |
| 411e1bfb | 8449 | |
| 102890f0 AM |
8450 | /* Adjust got entry for this reloc. */ |
| 8451 | if (h != NULL) | |
| 8452 | ent = h->got.glist; | |
| 8453 | else | |
| 8454 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
| 411e1bfb | 8455 | |
| 102890f0 AM |
8456 | for (; ent != NULL; ent = ent->next) |
| 8457 | if (ent->addend == rel->r_addend | |
| 8458 | && ent->owner == ibfd | |
| 8459 | && ent->tls_type == tls_type) | |
| 8460 | break; | |
| 8461 | if (ent == NULL) | |
| 8462 | abort (); | |
| 411e1bfb | 8463 | |
| 102890f0 AM |
8464 | if (tls_set == 0) |
| 8465 | { | |
| 8466 | /* We managed to get rid of a got entry. */ | |
| 8467 | if (ent->got.refcount > 0) | |
| 8468 | ent->got.refcount -= 1; | |
| 8469 | } | |
| 8470 | } | |
| 8471 | else | |
| 8472 | { | |
| 8473 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
| 8474 | we'll lose one or two dyn relocs. */ | |
| 8475 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
| 19e08130 | 8476 | NULL, h, sym)) |
| 102890f0 | 8477 | return FALSE; |
| 411e1bfb | 8478 | |
| 102890f0 AM |
8479 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
| 8480 | { | |
| 8481 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
| 19e08130 | 8482 | NULL, h, sym)) |
| 102890f0 AM |
8483 | return FALSE; |
| 8484 | } | |
| 8485 | } | |
| 411e1bfb | 8486 | |
| 102890f0 AM |
8487 | *tls_mask |= tls_set; |
| 8488 | *tls_mask &= ~tls_clear; | |
| 8489 | } | |
| 8c1d1bb8 | 8490 | |
| 102890f0 AM |
8491 | if (elf_section_data (sec)->relocs != relstart) |
| 8492 | free (relstart); | |
| 8493 | } | |
| 411e1bfb | 8494 | |
| 663a1470 AM |
8495 | if (locsyms != NULL |
| 8496 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
| 8497 | { | |
| 8498 | if (!info->keep_memory) | |
| 8499 | free (locsyms); | |
| 8500 | else | |
| 8501 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
| 8502 | } | |
| 8503 | } | |
| 411e1bfb | 8504 | |
| 663a1470 AM |
8505 | if (toc_ref != NULL) |
| 8506 | free (toc_ref); | |
| b34976b6 | 8507 | return TRUE; |
| 1e2f5b6e | 8508 | } |
| b34976b6 | 8509 | |
| c5614fa4 AM |
8510 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
| 8511 | the values of any global symbols in a toc section that has been | |
| 8512 | edited. Globals in toc sections should be a rarity, so this function | |
| 8513 | sets a flag if any are found in toc sections other than the one just | |
| 8514 | edited, so that futher hash table traversals can be avoided. */ | |
| 8515 | ||
| 8516 | struct adjust_toc_info | |
| 8517 | { | |
| 8518 | asection *toc; | |
| 8519 | unsigned long *skip; | |
| 8520 | bfd_boolean global_toc_syms; | |
| 8521 | }; | |
| 8522 | ||
| ba761f19 AM |
8523 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
| 8524 | ||
| c5614fa4 AM |
8525 | static bfd_boolean |
| 8526 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
| 8527 | { | |
| 8528 | struct ppc_link_hash_entry *eh; | |
| 8529 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
| 854b41e7 | 8530 | unsigned long i; |
| c5614fa4 | 8531 | |
| c5614fa4 AM |
8532 | if (h->root.type != bfd_link_hash_defined |
| 8533 | && h->root.type != bfd_link_hash_defweak) | |
| 8534 | return TRUE; | |
| 8535 | ||
| 8536 | eh = (struct ppc_link_hash_entry *) h; | |
| 8537 | if (eh->adjust_done) | |
| 8538 | return TRUE; | |
| 8539 | ||
| 8540 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
| 8541 | { | |
| 854b41e7 AM |
8542 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
| 8543 | i = toc_inf->toc->rawsize >> 3; | |
| c5614fa4 | 8544 | else |
| 854b41e7 AM |
8545 | i = eh->elf.root.u.def.value >> 3; |
| 8546 | ||
| ba761f19 | 8547 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
| c5614fa4 AM |
8548 | { |
| 8549 | (*_bfd_error_handler) | |
| 854b41e7 AM |
8550 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
| 8551 | do | |
| 8552 | ++i; | |
| ba761f19 | 8553 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
| 854b41e7 | 8554 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
| c5614fa4 | 8555 | } |
| 854b41e7 AM |
8556 | |
| 8557 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
| c5614fa4 AM |
8558 | eh->adjust_done = 1; |
| 8559 | } | |
| 8560 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
| 8561 | toc_inf->global_toc_syms = TRUE; | |
| 8562 | ||
| 8563 | return TRUE; | |
| 8564 | } | |
| 8565 | ||
| 560c8763 AM |
8566 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
| 8567 | ||
| 8568 | static bfd_boolean | |
| 8569 | ok_lo_toc_insn (unsigned int insn) | |
| 8570 | { | |
| 8571 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
| 8572 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
| 8573 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
| 8574 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
| 8575 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
| 8576 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
| 8577 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
| 8578 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
| 8579 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
| 8580 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
| 8581 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
| 8582 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
| 8583 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
| 8584 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
| 8585 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
| 8586 | && (insn & 3) != 1) | |
| 8587 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
| 8588 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
| 8589 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
| 8590 | } | |
| 8591 | ||
| c5614fa4 AM |
8592 | /* Examine all relocs referencing .toc sections in order to remove |
| 8593 | unused .toc entries. */ | |
| 8594 | ||
| 8595 | bfd_boolean | |
| 33c0ec9d | 8596 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
| c5614fa4 AM |
8597 | { |
| 8598 | bfd *ibfd; | |
| 8599 | struct adjust_toc_info toc_inf; | |
| 67f0cbdb | 8600 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| c5614fa4 | 8601 | |
| 67f0cbdb | 8602 | htab->do_toc_opt = 1; |
| c5614fa4 | 8603 | toc_inf.global_toc_syms = TRUE; |
| c72f2fb2 | 8604 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| c5614fa4 AM |
8605 | { |
| 8606 | asection *toc, *sec; | |
| 8607 | Elf_Internal_Shdr *symtab_hdr; | |
| 8608 | Elf_Internal_Sym *local_syms; | |
| 425b145b | 8609 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
| c5614fa4 AM |
8610 | unsigned long *skip, *drop; |
| 8611 | unsigned char *used; | |
| 8612 | unsigned char *keep, last, some_unused; | |
| 8613 | ||
| 854b41e7 AM |
8614 | if (!is_ppc64_elf (ibfd)) |
| 8615 | continue; | |
| 8616 | ||
| c5614fa4 AM |
8617 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
| 8618 | if (toc == NULL | |
| 92b7a70f | 8619 | || toc->size == 0 |
| dbaa2011 AM |
8620 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
| 8621 | || discarded_section (toc)) | |
| c5614fa4 AM |
8622 | continue; |
| 8623 | ||
| 425b145b | 8624 | toc_relocs = NULL; |
| c5614fa4 | 8625 | local_syms = NULL; |
| 0ffa91dd | 8626 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| c5614fa4 AM |
8627 | |
| 8628 | /* Look at sections dropped from the final link. */ | |
| 8629 | skip = NULL; | |
| 8630 | relstart = NULL; | |
| 8631 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
| 8632 | { | |
| 8633 | if (sec->reloc_count == 0 | |
| dbaa2011 | 8634 | || !discarded_section (sec) |
| c5614fa4 AM |
8635 | || get_opd_info (sec) |
| 8636 | || (sec->flags & SEC_ALLOC) == 0 | |
| 8637 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 8638 | continue; | |
| 8639 | ||
| 8640 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
| 8641 | if (relstart == NULL) | |
| 8642 | goto error_ret; | |
| 8643 | ||
| 8644 | /* Run through the relocs to see which toc entries might be | |
| 8645 | unused. */ | |
| 8646 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 8647 | { | |
| 8648 | enum elf_ppc64_reloc_type r_type; | |
| 8649 | unsigned long r_symndx; | |
| 8650 | asection *sym_sec; | |
| 8651 | struct elf_link_hash_entry *h; | |
| 8652 | Elf_Internal_Sym *sym; | |
| 8653 | bfd_vma val; | |
| 8654 | ||
| 8655 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 8656 | switch (r_type) | |
| 8657 | { | |
| 8658 | default: | |
| 8659 | continue; | |
| 8660 | ||
| 8661 | case R_PPC64_TOC16: | |
| 8662 | case R_PPC64_TOC16_LO: | |
| 8663 | case R_PPC64_TOC16_HI: | |
| 8664 | case R_PPC64_TOC16_HA: | |
| 8665 | case R_PPC64_TOC16_DS: | |
| 8666 | case R_PPC64_TOC16_LO_DS: | |
| 8667 | break; | |
| 8668 | } | |
| 8669 | ||
| 8670 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8671 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8672 | r_symndx, ibfd)) | |
| 8673 | goto error_ret; | |
| 8674 | ||
| 8675 | if (sym_sec != toc) | |
| 8676 | continue; | |
| 8677 | ||
| 8678 | if (h != NULL) | |
| 8679 | val = h->root.u.def.value; | |
| 8680 | else | |
| 8681 | val = sym->st_value; | |
| 8682 | val += rel->r_addend; | |
| 8683 | ||
| 8684 | if (val >= toc->size) | |
| 8685 | continue; | |
| 8686 | ||
| 8687 | /* Anything in the toc ought to be aligned to 8 bytes. | |
| 8688 | If not, don't mark as unused. */ | |
| 8689 | if (val & 7) | |
| 8690 | continue; | |
| 8691 | ||
| 8692 | if (skip == NULL) | |
| 8693 | { | |
| 854b41e7 | 8694 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
| c5614fa4 AM |
8695 | if (skip == NULL) |
| 8696 | goto error_ret; | |
| 8697 | } | |
| 8698 | ||
| ba761f19 | 8699 | skip[val >> 3] = ref_from_discarded; |
| c5614fa4 AM |
8700 | } |
| 8701 | ||
| 8702 | if (elf_section_data (sec)->relocs != relstart) | |
| 8703 | free (relstart); | |
| 8704 | } | |
| 8705 | ||
| ba761f19 AM |
8706 | /* For largetoc loads of address constants, we can convert |
| 8707 | . addis rx,2,addr@got@ha | |
| 8708 | . ld ry,addr@got@l(rx) | |
| 8709 | to | |
| 8710 | . addis rx,2,addr@toc@ha | |
| 8711 | . addi ry,rx,addr@toc@l | |
| 8712 | when addr is within 2G of the toc pointer. This then means | |
| 8713 | that the word storing "addr" in the toc is no longer needed. */ | |
| 68ffbac6 | 8714 | |
| ba761f19 AM |
8715 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
| 8716 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
| 8717 | && toc->reloc_count != 0) | |
| 8718 | { | |
| 8719 | /* Read toc relocs. */ | |
| 425b145b AM |
8720 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
| 8721 | info->keep_memory); | |
| 8722 | if (toc_relocs == NULL) | |
| ba761f19 AM |
8723 | goto error_ret; |
| 8724 | ||
| 425b145b | 8725 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
| ba761f19 AM |
8726 | { |
| 8727 | enum elf_ppc64_reloc_type r_type; | |
| 8728 | unsigned long r_symndx; | |
| 8729 | asection *sym_sec; | |
| 8730 | struct elf_link_hash_entry *h; | |
| 8731 | Elf_Internal_Sym *sym; | |
| 8732 | bfd_vma val, addr; | |
| 8733 | ||
| 8734 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 8735 | if (r_type != R_PPC64_ADDR64) | |
| 8736 | continue; | |
| 8737 | ||
| 8738 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8739 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8740 | r_symndx, ibfd)) | |
| 8741 | goto error_ret; | |
| 8742 | ||
| 425b145b | 8743 | if (sym_sec == NULL |
| dbaa2011 | 8744 | || discarded_section (sym_sec)) |
| 425b145b AM |
8745 | continue; |
| 8746 | ||
| afe397ea | 8747 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
| ba761f19 AM |
8748 | continue; |
| 8749 | ||
| 8750 | if (h != NULL) | |
| bddc25c9 AM |
8751 | { |
| 8752 | if (h->type == STT_GNU_IFUNC) | |
| 8753 | continue; | |
| 8754 | val = h->root.u.def.value; | |
| 8755 | } | |
| ba761f19 | 8756 | else |
| bddc25c9 AM |
8757 | { |
| 8758 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 8759 | continue; | |
| 8760 | val = sym->st_value; | |
| 8761 | } | |
| ba761f19 AM |
8762 | val += rel->r_addend; |
| 8763 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
| 8764 | ||
| 8765 | /* We don't yet know the exact toc pointer value, but we | |
| 8766 | know it will be somewhere in the toc section. Don't | |
| 8767 | optimize if the difference from any possible toc | |
| 8768 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
| 8769 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
| 8770 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
| 8771 | continue; | |
| 8772 | ||
| 8773 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
| 8774 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
| 8775 | continue; | |
| 8776 | ||
| 8777 | if (skip == NULL) | |
| 8778 | { | |
| 8779 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
| 8780 | if (skip == NULL) | |
| 8781 | goto error_ret; | |
| 8782 | } | |
| 8783 | ||
| 8784 | skip[rel->r_offset >> 3] | |
| 425b145b | 8785 | |= can_optimize | ((rel - toc_relocs) << 2); |
| ba761f19 | 8786 | } |
| ba761f19 AM |
8787 | } |
| 8788 | ||
| c5614fa4 AM |
8789 | if (skip == NULL) |
| 8790 | continue; | |
| 8791 | ||
| 8792 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
| 8793 | if (used == NULL) | |
| 8794 | { | |
| 8795 | error_ret: | |
| 8796 | if (local_syms != NULL | |
| 8797 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 8798 | free (local_syms); | |
| 8799 | if (sec != NULL | |
| 8800 | && relstart != NULL | |
| 8801 | && elf_section_data (sec)->relocs != relstart) | |
| 8802 | free (relstart); | |
| 425b145b AM |
8803 | if (toc_relocs != NULL |
| 8804 | && elf_section_data (toc)->relocs != toc_relocs) | |
| 8805 | free (toc_relocs); | |
| c5614fa4 AM |
8806 | if (skip != NULL) |
| 8807 | free (skip); | |
| 8808 | return FALSE; | |
| 8809 | } | |
| 8810 | ||
| 30038c59 AM |
8811 | /* Now check all kept sections that might reference the toc. |
| 8812 | Check the toc itself last. */ | |
| 8813 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
| 8814 | : ibfd->sections); | |
| c5614fa4 | 8815 | sec != NULL; |
| c5614fa4 | 8816 | sec = (sec == toc ? NULL |
| c5614fa4 | 8817 | : sec->next == NULL ? toc |
| 30038c59 | 8818 | : sec->next == toc && toc->next ? toc->next |
| c5614fa4 AM |
8819 | : sec->next)) |
| 8820 | { | |
| 8821 | int repeat; | |
| 8822 | ||
| 8823 | if (sec->reloc_count == 0 | |
| dbaa2011 | 8824 | || discarded_section (sec) |
| c5614fa4 AM |
8825 | || get_opd_info (sec) |
| 8826 | || (sec->flags & SEC_ALLOC) == 0 | |
| 8827 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 8828 | continue; | |
| 8829 | ||
| 854b41e7 AM |
8830 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
| 8831 | info->keep_memory); | |
| c5614fa4 | 8832 | if (relstart == NULL) |
| 2915c55b JK |
8833 | { |
| 8834 | free (used); | |
| 8835 | goto error_ret; | |
| 8836 | } | |
| c5614fa4 AM |
8837 | |
| 8838 | /* Mark toc entries referenced as used. */ | |
| c5614fa4 | 8839 | do |
| d4f1ee75 AM |
8840 | { |
| 8841 | repeat = 0; | |
| 8842 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 8843 | { | |
| 8844 | enum elf_ppc64_reloc_type r_type; | |
| 8845 | unsigned long r_symndx; | |
| 8846 | asection *sym_sec; | |
| 8847 | struct elf_link_hash_entry *h; | |
| 8848 | Elf_Internal_Sym *sym; | |
| 8849 | bfd_vma val; | |
| 8850 | enum {no_check, check_lo, check_ha} insn_check; | |
| 98528052 | 8851 | |
| d4f1ee75 AM |
8852 | r_type = ELF64_R_TYPE (rel->r_info); |
| 8853 | switch (r_type) | |
| 8854 | { | |
| 8855 | default: | |
| 8856 | insn_check = no_check; | |
| 8857 | break; | |
| 98528052 | 8858 | |
| d4f1ee75 AM |
8859 | case R_PPC64_GOT_TLSLD16_HA: |
| 8860 | case R_PPC64_GOT_TLSGD16_HA: | |
| 8861 | case R_PPC64_GOT_TPREL16_HA: | |
| 8862 | case R_PPC64_GOT_DTPREL16_HA: | |
| 8863 | case R_PPC64_GOT16_HA: | |
| 8864 | case R_PPC64_TOC16_HA: | |
| 8865 | insn_check = check_ha; | |
| 8866 | break; | |
| 98528052 | 8867 | |
| d4f1ee75 AM |
8868 | case R_PPC64_GOT_TLSLD16_LO: |
| 8869 | case R_PPC64_GOT_TLSGD16_LO: | |
| 8870 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 8871 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 8872 | case R_PPC64_GOT16_LO: | |
| 8873 | case R_PPC64_GOT16_LO_DS: | |
| 8874 | case R_PPC64_TOC16_LO: | |
| 8875 | case R_PPC64_TOC16_LO_DS: | |
| 8876 | insn_check = check_lo; | |
| 8877 | break; | |
| 8878 | } | |
| 560c8763 | 8879 | |
| d4f1ee75 AM |
8880 | if (insn_check != no_check) |
| 8881 | { | |
| 8882 | bfd_vma off = rel->r_offset & ~3; | |
| 8883 | unsigned char buf[4]; | |
| 8884 | unsigned int insn; | |
| c5614fa4 | 8885 | |
| d4f1ee75 AM |
8886 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
| 8887 | { | |
| 8888 | free (used); | |
| 8889 | goto error_ret; | |
| 8890 | } | |
| 8891 | insn = bfd_get_32 (ibfd, buf); | |
| 8892 | if (insn_check == check_lo | |
| 8893 | ? !ok_lo_toc_insn (insn) | |
| 8894 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
| 8895 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
| 8896 | { | |
| 8897 | char str[12]; | |
| 8898 | ||
| 8899 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
| 8900 | sprintf (str, "%#08x", insn); | |
| 8901 | info->callbacks->einfo | |
| 8902 | (_("%P: %H: toc optimization is not supported for" | |
| 8903 | " %s instruction.\n"), | |
| 8904 | ibfd, sec, rel->r_offset & ~3, str); | |
| 8905 | } | |
| 8906 | } | |
| c5614fa4 | 8907 | |
| d4f1ee75 AM |
8908 | switch (r_type) |
| 8909 | { | |
| 8910 | case R_PPC64_TOC16: | |
| 8911 | case R_PPC64_TOC16_LO: | |
| 8912 | case R_PPC64_TOC16_HI: | |
| 8913 | case R_PPC64_TOC16_HA: | |
| 8914 | case R_PPC64_TOC16_DS: | |
| 8915 | case R_PPC64_TOC16_LO_DS: | |
| 8916 | /* In case we're taking addresses of toc entries. */ | |
| 8917 | case R_PPC64_ADDR64: | |
| 8918 | break; | |
| c5614fa4 | 8919 | |
| d4f1ee75 AM |
8920 | default: |
| 8921 | continue; | |
| 8922 | } | |
| c5614fa4 | 8923 | |
| d4f1ee75 AM |
8924 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 8925 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8926 | r_symndx, ibfd)) | |
| 8927 | { | |
| 8928 | free (used); | |
| 8929 | goto error_ret; | |
| 8930 | } | |
| c5614fa4 | 8931 | |
| d4f1ee75 AM |
8932 | if (sym_sec != toc) |
| 8933 | continue; | |
| c5614fa4 | 8934 | |
| d4f1ee75 AM |
8935 | if (h != NULL) |
| 8936 | val = h->root.u.def.value; | |
| 8937 | else | |
| 8938 | val = sym->st_value; | |
| 8939 | val += rel->r_addend; | |
| ba761f19 | 8940 | |
| d4f1ee75 AM |
8941 | if (val >= toc->size) |
| 8942 | continue; | |
| ba761f19 | 8943 | |
| d4f1ee75 AM |
8944 | if ((skip[val >> 3] & can_optimize) != 0) |
| 8945 | { | |
| 8946 | bfd_vma off; | |
| 8947 | unsigned char opc; | |
| 8948 | ||
| 8949 | switch (r_type) | |
| 8950 | { | |
| 8951 | case R_PPC64_TOC16_HA: | |
| ba761f19 | 8952 | break; |
| ba761f19 | 8953 | |
| d4f1ee75 AM |
8954 | case R_PPC64_TOC16_LO_DS: |
| 8955 | off = rel->r_offset; | |
| 8956 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
| 8957 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
| 8958 | off, 1)) | |
| 8959 | { | |
| 8960 | free (used); | |
| 8961 | goto error_ret; | |
| 8962 | } | |
| 8963 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
| 8964 | break; | |
| 8965 | /* Fall thru */ | |
| ba761f19 | 8966 | |
| d4f1ee75 AM |
8967 | default: |
| 8968 | /* Wrong sort of reloc, or not a ld. We may | |
| 8969 | as well clear ref_from_discarded too. */ | |
| 8970 | skip[val >> 3] = 0; | |
| 8971 | } | |
| 8972 | } | |
| 8973 | ||
| 8974 | if (sec != toc) | |
| 8975 | used[val >> 3] = 1; | |
| 8976 | /* For the toc section, we only mark as used if this | |
| 8977 | entry itself isn't unused. */ | |
| 8978 | else if ((used[rel->r_offset >> 3] | |
| 8979 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
| 8980 | && !used[val >> 3]) | |
| 8981 | { | |
| 8982 | /* Do all the relocs again, to catch reference | |
| 8983 | chains. */ | |
| 8984 | repeat = 1; | |
| 8985 | used[val >> 3] = 1; | |
| 8986 | } | |
| 8987 | } | |
| 8988 | } | |
| c5614fa4 | 8989 | while (repeat); |
| 854b41e7 AM |
8990 | |
| 8991 | if (elf_section_data (sec)->relocs != relstart) | |
| 8992 | free (relstart); | |
| c5614fa4 AM |
8993 | } |
| 8994 | ||
| 8995 | /* Merge the used and skip arrays. Assume that TOC | |
| 8996 | doublewords not appearing as either used or unused belong | |
| 8997 | to to an entry more than one doubleword in size. */ | |
| 8998 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
| 8999 | drop < skip + (toc->size + 7) / 8; | |
| 9000 | ++drop, ++keep) | |
| 9001 | { | |
| 9002 | if (*keep) | |
| 9003 | { | |
| ba761f19 AM |
9004 | *drop &= ~ref_from_discarded; |
| 9005 | if ((*drop & can_optimize) != 0) | |
| 9006 | some_unused = 1; | |
| c5614fa4 AM |
9007 | last = 0; |
| 9008 | } | |
| b140b010 | 9009 | else if ((*drop & ref_from_discarded) != 0) |
| c5614fa4 AM |
9010 | { |
| 9011 | some_unused = 1; | |
| ba761f19 | 9012 | last = ref_from_discarded; |
| c5614fa4 AM |
9013 | } |
| 9014 | else | |
| 9015 | *drop = last; | |
| 9016 | } | |
| 9017 | ||
| 9018 | free (used); | |
| 9019 | ||
| 9020 | if (some_unused) | |
| 9021 | { | |
| 9022 | bfd_byte *contents, *src; | |
| 9023 | unsigned long off; | |
| d62b3684 | 9024 | Elf_Internal_Sym *sym; |
| ba761f19 | 9025 | bfd_boolean local_toc_syms = FALSE; |
| c5614fa4 AM |
9026 | |
| 9027 | /* Shuffle the toc contents, and at the same time convert the | |
| 9028 | skip array from booleans into offsets. */ | |
| 9029 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
| 9030 | goto error_ret; | |
| 9031 | ||
| 9032 | elf_section_data (toc)->this_hdr.contents = contents; | |
| 9033 | ||
| 9034 | for (src = contents, off = 0, drop = skip; | |
| 9035 | src < contents + toc->size; | |
| 9036 | src += 8, ++drop) | |
| 9037 | { | |
| ba761f19 AM |
9038 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
| 9039 | off += 8; | |
| c5614fa4 AM |
9040 | else if (off != 0) |
| 9041 | { | |
| 9042 | *drop = off; | |
| 9043 | memcpy (src - off, src, 8); | |
| 9044 | } | |
| 9045 | } | |
| 854b41e7 | 9046 | *drop = off; |
| c5614fa4 AM |
9047 | toc->rawsize = toc->size; |
| 9048 | toc->size = src - contents - off; | |
| 9049 | ||
| ba761f19 AM |
9050 | /* Adjust addends for relocs against the toc section sym, |
| 9051 | and optimize any accesses we can. */ | |
| c5614fa4 AM |
9052 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
| 9053 | { | |
| 9054 | if (sec->reloc_count == 0 | |
| dbaa2011 | 9055 | || discarded_section (sec)) |
| c5614fa4 AM |
9056 | continue; |
| 9057 | ||
| 9058 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 854b41e7 | 9059 | info->keep_memory); |
| c5614fa4 AM |
9060 | if (relstart == NULL) |
| 9061 | goto error_ret; | |
| 9062 | ||
| 9063 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 9064 | { | |
| 9065 | enum elf_ppc64_reloc_type r_type; | |
| 9066 | unsigned long r_symndx; | |
| 9067 | asection *sym_sec; | |
| 9068 | struct elf_link_hash_entry *h; | |
| 854b41e7 | 9069 | bfd_vma val; |
| c5614fa4 AM |
9070 | |
| 9071 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 9072 | switch (r_type) | |
| 9073 | { | |
| 9074 | default: | |
| 9075 | continue; | |
| 9076 | ||
| 9077 | case R_PPC64_TOC16: | |
| 9078 | case R_PPC64_TOC16_LO: | |
| 9079 | case R_PPC64_TOC16_HI: | |
| 9080 | case R_PPC64_TOC16_HA: | |
| 9081 | case R_PPC64_TOC16_DS: | |
| 9082 | case R_PPC64_TOC16_LO_DS: | |
| 9083 | case R_PPC64_ADDR64: | |
| 9084 | break; | |
| 9085 | } | |
| 9086 | ||
| 9087 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 9088 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 9089 | r_symndx, ibfd)) | |
| 9090 | goto error_ret; | |
| 9091 | ||
| ba761f19 | 9092 | if (sym_sec != toc) |
| c5614fa4 AM |
9093 | continue; |
| 9094 | ||
| ba761f19 AM |
9095 | if (h != NULL) |
| 9096 | val = h->root.u.def.value; | |
| 9097 | else | |
| 9098 | { | |
| 9099 | val = sym->st_value; | |
| 9100 | if (val != 0) | |
| 9101 | local_toc_syms = TRUE; | |
| 9102 | } | |
| 9103 | ||
| 9104 | val += rel->r_addend; | |
| 854b41e7 AM |
9105 | |
| 9106 | if (val > toc->rawsize) | |
| 9107 | val = toc->rawsize; | |
| ba761f19 AM |
9108 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
| 9109 | continue; | |
| 9110 | else if ((skip[val >> 3] & can_optimize) != 0) | |
| 9111 | { | |
| 9112 | Elf_Internal_Rela *tocrel | |
| 425b145b | 9113 | = toc_relocs + (skip[val >> 3] >> 2); |
| ba761f19 AM |
9114 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
| 9115 | ||
| 9116 | switch (r_type) | |
| 9117 | { | |
| 9118 | case R_PPC64_TOC16_HA: | |
| 9119 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
| 9120 | break; | |
| 9121 | ||
| 9122 | case R_PPC64_TOC16_LO_DS: | |
| 9123 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
| 9124 | break; | |
| 9125 | ||
| 9126 | default: | |
| 28942f62 AM |
9127 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 9128 | ppc_howto_init (); | |
| b140b010 | 9129 | info->callbacks->einfo |
| bc30df16 | 9130 | (_("%P: %H: %s references " |
| b140b010 AM |
9131 | "optimized away TOC entry\n"), |
| 9132 | ibfd, sec, rel->r_offset, | |
| 9133 | ppc64_elf_howto_table[r_type]->name); | |
| 9134 | bfd_set_error (bfd_error_bad_value); | |
| 9135 | goto error_ret; | |
| ba761f19 AM |
9136 | } |
| 9137 | rel->r_addend = tocrel->r_addend; | |
| 9138 | elf_section_data (sec)->relocs = relstart; | |
| 9139 | continue; | |
| 9140 | } | |
| 9141 | ||
| 9142 | if (h != NULL || sym->st_value != 0) | |
| 9143 | continue; | |
| 854b41e7 AM |
9144 | |
| 9145 | rel->r_addend -= skip[val >> 3]; | |
| 9146 | elf_section_data (sec)->relocs = relstart; | |
| c5614fa4 | 9147 | } |
| 854b41e7 AM |
9148 | |
| 9149 | if (elf_section_data (sec)->relocs != relstart) | |
| 9150 | free (relstart); | |
| c5614fa4 AM |
9151 | } |
| 9152 | ||
| 9153 | /* We shouldn't have local or global symbols defined in the TOC, | |
| 9154 | but handle them anyway. */ | |
| df22d223 AM |
9155 | if (local_syms != NULL) |
| 9156 | for (sym = local_syms; | |
| 9157 | sym < local_syms + symtab_hdr->sh_info; | |
| 9158 | ++sym) | |
| 9159 | if (sym->st_value != 0 | |
| 9160 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
| 9161 | { | |
| 9162 | unsigned long i; | |
| 854b41e7 | 9163 | |
| df22d223 AM |
9164 | if (sym->st_value > toc->rawsize) |
| 9165 | i = toc->rawsize >> 3; | |
| 9166 | else | |
| 9167 | i = sym->st_value >> 3; | |
| 854b41e7 | 9168 | |
| df22d223 AM |
9169 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
| 9170 | { | |
| 9171 | if (local_toc_syms) | |
| 9172 | (*_bfd_error_handler) | |
| 9173 | (_("%s defined on removed toc entry"), | |
| 9174 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
| 9175 | do | |
| 9176 | ++i; | |
| 9177 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
| 9178 | sym->st_value = (bfd_vma) i << 3; | |
| 9179 | } | |
| d62b3684 | 9180 | |
| df22d223 AM |
9181 | sym->st_value -= skip[i]; |
| 9182 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 9183 | } | |
| c5614fa4 | 9184 | |
| 854b41e7 | 9185 | /* Adjust any global syms defined in this toc input section. */ |
| c5614fa4 AM |
9186 | if (toc_inf.global_toc_syms) |
| 9187 | { | |
| 9188 | toc_inf.toc = toc; | |
| 9189 | toc_inf.skip = skip; | |
| 9190 | toc_inf.global_toc_syms = FALSE; | |
| 9191 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
| 9192 | &toc_inf); | |
| 9193 | } | |
| 854b41e7 AM |
9194 | |
| 9195 | if (toc->reloc_count != 0) | |
| 9196 | { | |
| d4730f92 | 9197 | Elf_Internal_Shdr *rel_hdr; |
| 854b41e7 AM |
9198 | Elf_Internal_Rela *wrel; |
| 9199 | bfd_size_type sz; | |
| 9200 | ||
| 854b41e7 | 9201 | /* Remove unused toc relocs, and adjust those we keep. */ |
| 28be611c AM |
9202 | if (toc_relocs == NULL) |
| 9203 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
| 9204 | info->keep_memory); | |
| 9205 | if (toc_relocs == NULL) | |
| 9206 | goto error_ret; | |
| 9207 | ||
| 425b145b AM |
9208 | wrel = toc_relocs; |
| 9209 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
| ba761f19 AM |
9210 | if ((skip[rel->r_offset >> 3] |
| 9211 | & (ref_from_discarded | can_optimize)) == 0) | |
| 854b41e7 AM |
9212 | { |
| 9213 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
| 9214 | wrel->r_info = rel->r_info; | |
| 9215 | wrel->r_addend = rel->r_addend; | |
| 9216 | ++wrel; | |
| 9217 | } | |
| 9218 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
| 9219 | &local_syms, NULL, NULL)) | |
| 9220 | goto error_ret; | |
| 9221 | ||
| 425b145b AM |
9222 | elf_section_data (toc)->relocs = toc_relocs; |
| 9223 | toc->reloc_count = wrel - toc_relocs; | |
| d4730f92 BS |
9224 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
| 9225 | sz = rel_hdr->sh_entsize; | |
| 9226 | rel_hdr->sh_size = toc->reloc_count * sz; | |
| 854b41e7 | 9227 | } |
| c5614fa4 | 9228 | } |
| 28be611c AM |
9229 | else if (toc_relocs != NULL |
| 9230 | && elf_section_data (toc)->relocs != toc_relocs) | |
| 425b145b | 9231 | free (toc_relocs); |
| c5614fa4 AM |
9232 | |
| 9233 | if (local_syms != NULL | |
| 9234 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 9235 | { | |
| 9236 | if (!info->keep_memory) | |
| 9237 | free (local_syms); | |
| 9238 | else | |
| 9239 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 9240 | } | |
| 9241 | free (skip); | |
| 9242 | } | |
| 9243 | ||
| 9244 | return TRUE; | |
| 9245 | } | |
| 9246 | ||
| 1bbe0902 AM |
9247 | /* Return true iff input section I references the TOC using |
| 9248 | instructions limited to +/-32k offsets. */ | |
| 9249 | ||
| 9250 | bfd_boolean | |
| 9251 | ppc64_elf_has_small_toc_reloc (asection *i) | |
| 9252 | { | |
| 9253 | return (is_ppc64_elf (i->owner) | |
| 9254 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
| 9255 | } | |
| 9256 | ||
| 927be08e AM |
9257 | /* Allocate space for one GOT entry. */ |
| 9258 | ||
| 9259 | static void | |
| 9260 | allocate_got (struct elf_link_hash_entry *h, | |
| 9261 | struct bfd_link_info *info, | |
| 9262 | struct got_entry *gent) | |
| 9263 | { | |
| 9264 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 9265 | bfd_boolean dyn; | |
| 9266 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
| 9267 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
| 9268 | ? 16 : 8); | |
| 9269 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
| 9270 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
| 9271 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
| 9272 | ||
| 9273 | gent->got.offset = got->size; | |
| 9274 | got->size += entsize; | |
| 9275 | ||
| 9276 | dyn = htab->elf.dynamic_sections_created; | |
| 19e08130 | 9277 | if (h->type == STT_GNU_IFUNC) |
| 927be08e | 9278 | { |
| 33e44f2e | 9279 | htab->elf.irelplt->size += rentsize; |
| 19e08130 | 9280 | htab->got_reli_size += rentsize; |
| 927be08e | 9281 | } |
| 19e08130 AM |
9282 | else if ((info->shared |
| 9283 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
| 9284 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
| 9285 | || h->root.type != bfd_link_hash_undefweak)) | |
| 927be08e | 9286 | { |
| 19e08130 | 9287 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
| 927be08e | 9288 | relgot->size += rentsize; |
| 927be08e AM |
9289 | } |
| 9290 | } | |
| 9291 | ||
| 7865406b AM |
9292 | /* This function merges got entries in the same toc group. */ |
| 9293 | ||
| 9294 | static void | |
| 9295 | merge_got_entries (struct got_entry **pent) | |
| 9296 | { | |
| 9297 | struct got_entry *ent, *ent2; | |
| 9298 | ||
| 9299 | for (ent = *pent; ent != NULL; ent = ent->next) | |
| 9300 | if (!ent->is_indirect) | |
| 9301 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
| 9302 | if (!ent2->is_indirect | |
| 9303 | && ent2->addend == ent->addend | |
| 9304 | && ent2->tls_type == ent->tls_type | |
| 9305 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
| 9306 | { | |
| 9307 | ent2->is_indirect = TRUE; | |
| 9308 | ent2->got.ent = ent; | |
| 9309 | } | |
| 9310 | } | |
| 9311 | ||
| 65f38f15 AM |
9312 | /* Allocate space in .plt, .got and associated reloc sections for |
| 9313 | dynamic relocs. */ | |
| 5bd4f169 | 9314 | |
| b34976b6 | 9315 | static bfd_boolean |
| 4ce794b7 | 9316 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 9317 | { |
| 65f38f15 AM |
9318 | struct bfd_link_info *info; |
| 9319 | struct ppc_link_hash_table *htab; | |
| 5bd4f169 | 9320 | asection *s; |
| 65f38f15 | 9321 | struct ppc_link_hash_entry *eh; |
| 6061a67d | 9322 | struct elf_dyn_relocs *p; |
| 0b8bcf0d | 9323 | struct got_entry **pgent, *gent; |
| 5bd4f169 | 9324 | |
| e92d460e | 9325 | if (h->root.type == bfd_link_hash_indirect) |
| b34976b6 | 9326 | return TRUE; |
| 5bd4f169 | 9327 | |
| 65f38f15 AM |
9328 | info = (struct bfd_link_info *) inf; |
| 9329 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
9330 | if (htab == NULL) |
| 9331 | return FALSE; | |
| 5bd4f169 | 9332 | |
| e054468f AM |
9333 | if ((htab->elf.dynamic_sections_created |
| 9334 | && h->dynindx != -1 | |
| 9335 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
| 9336 | || h->type == STT_GNU_IFUNC) | |
| 5bd4f169 | 9337 | { |
| 411e1bfb AM |
9338 | struct plt_entry *pent; |
| 9339 | bfd_boolean doneone = FALSE; | |
| 9340 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 9341 | if (pent->plt.refcount > 0) | |
| 9342 | { | |
| 25f23106 AM |
9343 | if (!htab->elf.dynamic_sections_created |
| 9344 | || h->dynindx == -1) | |
| e054468f | 9345 | { |
| 33e44f2e | 9346 | s = htab->elf.iplt; |
| e054468f | 9347 | pent->plt.offset = s->size; |
| b9e5796b | 9348 | s->size += PLT_ENTRY_SIZE (htab); |
| 33e44f2e | 9349 | s = htab->elf.irelplt; |
| e054468f AM |
9350 | } |
| 9351 | else | |
| 9352 | { | |
| 9353 | /* If this is the first .plt entry, make room for the special | |
| 9354 | first entry. */ | |
| 33e44f2e | 9355 | s = htab->elf.splt; |
| e054468f | 9356 | if (s->size == 0) |
| b9e5796b | 9357 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); |
| e054468f AM |
9358 | |
| 9359 | pent->plt.offset = s->size; | |
| 9360 | ||
| 9361 | /* Make room for this entry. */ | |
| b9e5796b | 9362 | s->size += PLT_ENTRY_SIZE (htab); |
| e054468f AM |
9363 | |
| 9364 | /* Make room for the .glink code. */ | |
| 9365 | s = htab->glink; | |
| 9366 | if (s->size == 0) | |
| 9367 | s->size += GLINK_CALL_STUB_SIZE; | |
| b9e5796b AM |
9368 | if (htab->opd_abi) |
| 9369 | { | |
| 9370 | /* We need bigger stubs past index 32767. */ | |
| 9371 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
| 9372 | s->size += 4; | |
| 9373 | s->size += 2*4; | |
| 9374 | } | |
| 9375 | else | |
| e054468f | 9376 | s->size += 4; |
| e054468f AM |
9377 | |
| 9378 | /* We also need to make an entry in the .rela.plt section. */ | |
| 33e44f2e | 9379 | s = htab->elf.srelplt; |
| e054468f | 9380 | } |
| eea6121a | 9381 | s->size += sizeof (Elf64_External_Rela); |
| 411e1bfb AM |
9382 | doneone = TRUE; |
| 9383 | } | |
| 9384 | else | |
| 9385 | pent->plt.offset = (bfd_vma) -1; | |
| 9386 | if (!doneone) | |
| 65f38f15 | 9387 | { |
| 411e1bfb | 9388 | h->plt.plist = NULL; |
| f5385ebf | 9389 | h->needs_plt = 0; |
| 65f38f15 AM |
9390 | } |
| 9391 | } | |
| 9392 | else | |
| 9393 | { | |
| 411e1bfb | 9394 | h->plt.plist = NULL; |
| f5385ebf | 9395 | h->needs_plt = 0; |
| 65f38f15 AM |
9396 | } |
| 9397 | ||
| 951fd09b AM |
9398 | eh = (struct ppc_link_hash_entry *) h; |
| 9399 | /* Run through the TLS GD got entries first if we're changing them | |
| 9400 | to TPREL. */ | |
| e7b938ca | 9401 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
| 951fd09b AM |
9402 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 9403 | if (gent->got.refcount > 0 | |
| 9404 | && (gent->tls_type & TLS_GD) != 0) | |
| 9405 | { | |
| 9406 | /* This was a GD entry that has been converted to TPREL. If | |
| 9407 | there happens to be a TPREL entry we can use that one. */ | |
| 9408 | struct got_entry *ent; | |
| 9409 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
| 9410 | if (ent->got.refcount > 0 | |
| 9411 | && (ent->tls_type & TLS_TPREL) != 0 | |
| e717da7e AM |
9412 | && ent->addend == gent->addend |
| 9413 | && ent->owner == gent->owner) | |
| 951fd09b AM |
9414 | { |
| 9415 | gent->got.refcount = 0; | |
| 9416 | break; | |
| 9417 | } | |
| 9418 | ||
| 9419 | /* If not, then we'll be using our own TPREL entry. */ | |
| 9420 | if (gent->got.refcount != 0) | |
| 9421 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
| 9422 | } | |
| 9423 | ||
| 7865406b AM |
9424 | /* Remove any list entry that won't generate a word in the GOT before |
| 9425 | we call merge_got_entries. Otherwise we risk merging to empty | |
| 9426 | entries. */ | |
| 0b8bcf0d AM |
9427 | pgent = &h->got.glist; |
| 9428 | while ((gent = *pgent) != NULL) | |
| 411e1bfb | 9429 | if (gent->got.refcount > 0) |
| 7865406b AM |
9430 | { |
| 9431 | if ((gent->tls_type & TLS_LD) != 0 | |
| 9432 | && !h->def_dynamic) | |
| 9433 | { | |
| 9434 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
| 9435 | *pgent = gent->next; | |
| 9436 | } | |
| 9437 | else | |
| 9438 | pgent = &gent->next; | |
| 9439 | } | |
| 9440 | else | |
| 9441 | *pgent = gent->next; | |
| 9442 | ||
| 9443 | if (!htab->do_multi_toc) | |
| 9444 | merge_got_entries (&h->got.glist); | |
| 9445 | ||
| 9446 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
| 9447 | if (!gent->is_indirect) | |
| 411e1bfb AM |
9448 | { |
| 9449 | /* Make sure this symbol is output as a dynamic symbol. | |
| 951fd09b AM |
9450 | Undefined weak syms won't yet be marked as dynamic, |
| 9451 | nor will all TLS symbols. */ | |
| 411e1bfb | 9452 | if (h->dynindx == -1 |
| b099ab9f | 9453 | && !h->forced_local |
| 25f23106 | 9454 | && h->type != STT_GNU_IFUNC |
| b099ab9f | 9455 | && htab->elf.dynamic_sections_created) |
| 411e1bfb | 9456 | { |
| c152c796 | 9457 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 411e1bfb AM |
9458 | return FALSE; |
| 9459 | } | |
| 65f38f15 | 9460 | |
| 0c8d6e5c | 9461 | if (!is_ppc64_elf (gent->owner)) |
| 927be08e | 9462 | abort (); |
| 0ffa91dd | 9463 | |
| 927be08e | 9464 | allocate_got (h, info, gent); |
| 411e1bfb | 9465 | } |
| 65f38f15 | 9466 | |
| b099ab9f | 9467 | if (eh->dyn_relocs == NULL |
| 25f23106 | 9468 | || (!htab->elf.dynamic_sections_created |
| 14b5f73f | 9469 | && h->type != STT_GNU_IFUNC)) |
| b34976b6 | 9470 | return TRUE; |
| 65f38f15 AM |
9471 | |
| 9472 | /* In the shared -Bsymbolic case, discard space allocated for | |
| 9473 | dynamic pc-relative relocs against symbols which turn out to be | |
| 9474 | defined in regular objects. For the normal shared case, discard | |
| 9475 | space for relocs that have become local due to symbol visibility | |
| 9476 | changes. */ | |
| 9477 | ||
| 9478 | if (info->shared) | |
| 9479 | { | |
| 9c7a29a3 | 9480 | /* Relocs that use pc_count are those that appear on a call insn, |
| 1d483afe | 9481 | or certain REL relocs (see must_be_dyn_reloc) that can be |
| 9c7a29a3 AM |
9482 | generated via assembly. We want calls to protected symbols to |
| 9483 | resolve directly to the function rather than going via the plt. | |
| 9484 | If people want function pointer comparisons to work as expected | |
| 9485 | then they should avoid writing weird assembly. */ | |
| 09695f56 | 9486 | if (SYMBOL_CALLS_LOCAL (info, h)) |
| 65f38f15 | 9487 | { |
| 6061a67d | 9488 | struct elf_dyn_relocs **pp; |
| 65f38f15 AM |
9489 | |
| 9490 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
| 5bd4f169 | 9491 | { |
| 65f38f15 AM |
9492 | p->count -= p->pc_count; |
| 9493 | p->pc_count = 0; | |
| 9494 | if (p->count == 0) | |
| 9495 | *pp = p->next; | |
| 9496 | else | |
| 9497 | pp = &p->next; | |
| 5bd4f169 | 9498 | } |
| 65f38f15 | 9499 | } |
| 4e795f50 AM |
9500 | |
| 9501 | /* Also discard relocs on undefined weak syms with non-default | |
| 9502 | visibility. */ | |
| cab87ef9 AM |
9503 | if (eh->dyn_relocs != NULL |
| 9504 | && h->root.type == bfd_link_hash_undefweak) | |
| dfbb6ac9 AM |
9505 | { |
| 9506 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
| 9507 | eh->dyn_relocs = NULL; | |
| 9508 | ||
| 9509 | /* Make sure this symbol is output as a dynamic symbol. | |
| 9510 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 9511 | else if (h->dynindx == -1 | |
| 9512 | && !h->forced_local) | |
| 9513 | { | |
| 9514 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
| 9515 | return FALSE; | |
| 9516 | } | |
| 9517 | } | |
| 65f38f15 | 9518 | } |
| 25f23106 AM |
9519 | else if (h->type == STT_GNU_IFUNC) |
| 9520 | { | |
| 9521 | if (!h->non_got_ref) | |
| 9522 | eh->dyn_relocs = NULL; | |
| 9523 | } | |
| f4656909 | 9524 | else if (ELIMINATE_COPY_RELOCS) |
| 65f38f15 AM |
9525 | { |
| 9526 | /* For the non-shared case, discard space for relocs against | |
| 9527 | symbols which turn out to need copy relocs or are not | |
| 9528 | dynamic. */ | |
| 9529 | ||
| f5385ebf | 9530 | if (!h->non_got_ref |
| f5385ebf | 9531 | && !h->def_regular) |
| 65f38f15 AM |
9532 | { |
| 9533 | /* Make sure this symbol is output as a dynamic symbol. | |
| 9534 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 9535 | if (h->dynindx == -1 | |
| f5385ebf | 9536 | && !h->forced_local) |
| 65f38f15 | 9537 | { |
| c152c796 | 9538 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| b34976b6 | 9539 | return FALSE; |
| 65f38f15 AM |
9540 | } |
| 9541 | ||
| 9542 | /* If that succeeded, we know we'll be keeping all the | |
| 9543 | relocs. */ | |
| 9544 | if (h->dynindx != -1) | |
| 9545 | goto keep; | |
| 9546 | } | |
| 9547 | ||
| 9548 | eh->dyn_relocs = NULL; | |
| 9549 | ||
| ec338859 | 9550 | keep: ; |
| 65f38f15 AM |
9551 | } |
| 9552 | ||
| 9553 | /* Finally, allocate space. */ | |
| 9554 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 9555 | { | |
| 9556 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
| 19e08130 | 9557 | if (eh->elf.type == STT_GNU_IFUNC) |
| 33e44f2e | 9558 | sreloc = htab->elf.irelplt; |
| eea6121a | 9559 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
| 65f38f15 AM |
9560 | } |
| 9561 | ||
| b34976b6 | 9562 | return TRUE; |
| 65f38f15 AM |
9563 | } |
| 9564 | ||
| a345bc8d AM |
9565 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
| 9566 | to set up space for global entry stubs. These are put in glink, | |
| 9567 | after the branch table. */ | |
| 65f38f15 | 9568 | |
| b34976b6 | 9569 | static bfd_boolean |
| a345bc8d | 9570 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
| 65f38f15 | 9571 | { |
| a345bc8d AM |
9572 | struct bfd_link_info *info; |
| 9573 | struct ppc_link_hash_table *htab; | |
| 9574 | struct plt_entry *pent; | |
| 9575 | asection *s; | |
| 65f38f15 | 9576 | |
| a345bc8d AM |
9577 | if (h->root.type == bfd_link_hash_indirect) |
| 9578 | return TRUE; | |
| 65f38f15 | 9579 | |
| a345bc8d AM |
9580 | if (!h->pointer_equality_needed) |
| 9581 | return TRUE; | |
| 65f38f15 | 9582 | |
| a345bc8d AM |
9583 | if (h->def_regular) |
| 9584 | return TRUE; | |
| 65f38f15 | 9585 | |
| a345bc8d AM |
9586 | info = inf; |
| 9587 | htab = ppc_hash_table (info); | |
| 9588 | if (htab == NULL) | |
| 9589 | return FALSE; | |
| 9590 | ||
| 9591 | s = htab->glink; | |
| 9592 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 9593 | if (pent->plt.offset != (bfd_vma) -1 | |
| 9594 | && pent->addend == 0) | |
| 9595 | { | |
| afe397ea AM |
9596 | /* For ELFv2, if this symbol is not defined in a regular file |
| 9597 | and we are not generating a shared library or pie, then we | |
| 9598 | need to define the symbol in the executable on a call stub. | |
| 9599 | This is to avoid text relocations. */ | |
| a345bc8d | 9600 | s->size = (s->size + 15) & -16; |
| afe397ea AM |
9601 | h->root.u.def.section = s; |
| 9602 | h->root.u.def.value = s->size; | |
| a345bc8d AM |
9603 | s->size += 16; |
| 9604 | break; | |
| 9605 | } | |
| 9606 | return TRUE; | |
| 9607 | } | |
| 9608 | ||
| 9609 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
| 9610 | read-only sections. */ | |
| 9611 | ||
| 9612 | static bfd_boolean | |
| 9613 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) | |
| 9614 | { | |
| 9615 | if (h->root.type == bfd_link_hash_indirect) | |
| 9616 | return TRUE; | |
| 9617 | ||
| 9618 | if (readonly_dynrelocs (h)) | |
| 9619 | { | |
| 9620 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
| 9621 | ||
| 9622 | /* Not an error, just cut short the traversal. */ | |
| 9623 | return FALSE; | |
| 65f38f15 | 9624 | } |
| b34976b6 | 9625 | return TRUE; |
| 65f38f15 AM |
9626 | } |
| 9627 | ||
| 9628 | /* Set the sizes of the dynamic sections. */ | |
| 9629 | ||
| b34976b6 | 9630 | static bfd_boolean |
| ee67d69a | 9631 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
| 4ce794b7 | 9632 | struct bfd_link_info *info) |
| 65f38f15 AM |
9633 | { |
| 9634 | struct ppc_link_hash_table *htab; | |
| 9635 | bfd *dynobj; | |
| 9636 | asection *s; | |
| b34976b6 | 9637 | bfd_boolean relocs; |
| 65f38f15 | 9638 | bfd *ibfd; |
| 7865406b | 9639 | struct got_entry *first_tlsld; |
| 65f38f15 AM |
9640 | |
| 9641 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
9642 | if (htab == NULL) |
| 9643 | return FALSE; | |
| 9644 | ||
| 65f38f15 AM |
9645 | dynobj = htab->elf.dynobj; |
| 9646 | if (dynobj == NULL) | |
| 9647 | abort (); | |
| 9648 | ||
| 9649 | if (htab->elf.dynamic_sections_created) | |
| 9650 | { | |
| 9651 | /* Set the contents of the .interp section to the interpreter. */ | |
| 36af4a4e | 9652 | if (info->executable) |
| 65f38f15 | 9653 | { |
| 3d4d4302 | 9654 | s = bfd_get_linker_section (dynobj, ".interp"); |
| 65f38f15 AM |
9655 | if (s == NULL) |
| 9656 | abort (); | |
| eea6121a | 9657 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 65f38f15 AM |
9658 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 9659 | } | |
| 9660 | } | |
| 9661 | ||
| 9662 | /* Set up .got offsets for local syms, and space for local dynamic | |
| 9663 | relocs. */ | |
| c72f2fb2 | 9664 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 65f38f15 | 9665 | { |
| 411e1bfb AM |
9666 | struct got_entry **lgot_ents; |
| 9667 | struct got_entry **end_lgot_ents; | |
| e054468f AM |
9668 | struct plt_entry **local_plt; |
| 9669 | struct plt_entry **end_local_plt; | |
| f961d9dd | 9670 | unsigned char *lgot_masks; |
| 65f38f15 AM |
9671 | bfd_size_type locsymcount; |
| 9672 | Elf_Internal_Shdr *symtab_hdr; | |
| 65f38f15 | 9673 | |
| 0c8d6e5c | 9674 | if (!is_ppc64_elf (ibfd)) |
| 65f38f15 AM |
9675 | continue; |
| 9676 | ||
| 9677 | for (s = ibfd->sections; s != NULL; s = s->next) | |
| 9678 | { | |
| 19e08130 | 9679 | struct ppc_dyn_relocs *p; |
| 65f38f15 | 9680 | |
| 6edfbbad | 9681 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
| 65f38f15 | 9682 | { |
| ec338859 AM |
9683 | if (!bfd_is_abs_section (p->sec) |
| 9684 | && bfd_is_abs_section (p->sec->output_section)) | |
| 9685 | { | |
| 9686 | /* Input section has been discarded, either because | |
| 9687 | it is a copy of a linkonce section or due to | |
| 9688 | linker script /DISCARD/, so we'll be discarding | |
| 9689 | the relocs too. */ | |
| 9690 | } | |
| 248866a8 | 9691 | else if (p->count != 0) |
| ec338859 | 9692 | { |
| 19e08130 AM |
9693 | asection *srel = elf_section_data (p->sec)->sreloc; |
| 9694 | if (p->ifunc) | |
| 33e44f2e | 9695 | srel = htab->elf.irelplt; |
| eea6121a | 9696 | srel->size += p->count * sizeof (Elf64_External_Rela); |
| 248866a8 AM |
9697 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 9698 | info->flags |= DF_TEXTREL; | |
| ec338859 | 9699 | } |
| 65f38f15 AM |
9700 | } |
| 9701 | } | |
| 9702 | ||
| 411e1bfb AM |
9703 | lgot_ents = elf_local_got_ents (ibfd); |
| 9704 | if (!lgot_ents) | |
| 65f38f15 AM |
9705 | continue; |
| 9706 | ||
| 0ffa91dd | 9707 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 65f38f15 | 9708 | locsymcount = symtab_hdr->sh_info; |
| 411e1bfb | 9709 | end_lgot_ents = lgot_ents + locsymcount; |
| e054468f AM |
9710 | local_plt = (struct plt_entry **) end_lgot_ents; |
| 9711 | end_local_plt = local_plt + locsymcount; | |
| f961d9dd | 9712 | lgot_masks = (unsigned char *) end_local_plt; |
| e717da7e | 9713 | s = ppc64_elf_tdata (ibfd)->got; |
| e7b938ca | 9714 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
| 65f38f15 | 9715 | { |
| 0b8bcf0d | 9716 | struct got_entry **pent, *ent; |
| 411e1bfb | 9717 | |
| 0b8bcf0d AM |
9718 | pent = lgot_ents; |
| 9719 | while ((ent = *pent) != NULL) | |
| 411e1bfb AM |
9720 | if (ent->got.refcount > 0) |
| 9721 | { | |
| e7b938ca | 9722 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
| 411e1bfb | 9723 | { |
| 927be08e | 9724 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
| 0b8bcf0d | 9725 | *pent = ent->next; |
| 411e1bfb AM |
9726 | } |
| 9727 | else | |
| 9728 | { | |
| 19e08130 AM |
9729 | unsigned int ent_size = 8; |
| 9730 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
| 9731 | ||
| eea6121a | 9732 | ent->got.offset = s->size; |
| e7b938ca | 9733 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
| 927be08e | 9734 | { |
| 19e08130 AM |
9735 | ent_size *= 2; |
| 9736 | rel_size *= 2; | |
| 9737 | } | |
| 9738 | s->size += ent_size; | |
| 9739 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
| 9740 | { | |
| 33e44f2e | 9741 | htab->elf.irelplt->size += rel_size; |
| 19e08130 AM |
9742 | htab->got_reli_size += rel_size; |
| 9743 | } | |
| 9744 | else if (info->shared) | |
| 9745 | { | |
| 9746 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 9747 | srel->size += rel_size; | |
| 927be08e | 9748 | } |
| 0b8bcf0d | 9749 | pent = &ent->next; |
| 411e1bfb AM |
9750 | } |
| 9751 | } | |
| 9752 | else | |
| 0b8bcf0d | 9753 | *pent = ent->next; |
| 65f38f15 | 9754 | } |
| e054468f AM |
9755 | |
| 9756 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
| 9757 | for (; local_plt < end_local_plt; ++local_plt) | |
| 9758 | { | |
| 9759 | struct plt_entry *ent; | |
| 9760 | ||
| 9761 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
| 9762 | if (ent->plt.refcount > 0) | |
| 9763 | { | |
| 33e44f2e | 9764 | s = htab->elf.iplt; |
| e054468f | 9765 | ent->plt.offset = s->size; |
| b9e5796b | 9766 | s->size += PLT_ENTRY_SIZE (htab); |
| e054468f | 9767 | |
| 33e44f2e | 9768 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); |
| e054468f AM |
9769 | } |
| 9770 | else | |
| 9771 | ent->plt.offset = (bfd_vma) -1; | |
| 9772 | } | |
| 65f38f15 AM |
9773 | } |
| 9774 | ||
| 9775 | /* Allocate global sym .plt and .got entries, and space for global | |
| 9776 | sym dynamic relocs. */ | |
| 4ce794b7 | 9777 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
| a345bc8d AM |
9778 | /* Stash the end of glink branch table. */ |
| 9779 | if (htab->glink != NULL) | |
| 9780 | htab->glink->rawsize = htab->glink->size; | |
| 9781 | ||
| 9782 | if (!htab->opd_abi && !info->shared) | |
| 9783 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); | |
| 65f38f15 | 9784 | |
| 7865406b | 9785 | first_tlsld = NULL; |
| c72f2fb2 | 9786 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 102890f0 | 9787 | { |
| 7865406b AM |
9788 | struct got_entry *ent; |
| 9789 | ||
| 0c8d6e5c | 9790 | if (!is_ppc64_elf (ibfd)) |
| 102890f0 AM |
9791 | continue; |
| 9792 | ||
| 7865406b AM |
9793 | ent = ppc64_tlsld_got (ibfd); |
| 9794 | if (ent->got.refcount > 0) | |
| 102890f0 | 9795 | { |
| 7865406b | 9796 | if (!htab->do_multi_toc && first_tlsld != NULL) |
| 102890f0 | 9797 | { |
| 7865406b AM |
9798 | ent->is_indirect = TRUE; |
| 9799 | ent->got.ent = first_tlsld; | |
| 9800 | } | |
| 9801 | else | |
| 9802 | { | |
| 9803 | if (first_tlsld == NULL) | |
| 9804 | first_tlsld = ent; | |
| 9805 | s = ppc64_elf_tdata (ibfd)->got; | |
| 9806 | ent->got.offset = s->size; | |
| 9807 | ent->owner = ibfd; | |
| 9808 | s->size += 16; | |
| 9809 | if (info->shared) | |
| 9810 | { | |
| 9811 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 9812 | srel->size += sizeof (Elf64_External_Rela); | |
| 9813 | } | |
| 102890f0 AM |
9814 | } |
| 9815 | } | |
| 9816 | else | |
| 7865406b | 9817 | ent->got.offset = (bfd_vma) -1; |
| 102890f0 AM |
9818 | } |
| 9819 | ||
| 65f38f15 AM |
9820 | /* We now have determined the sizes of the various dynamic sections. |
| 9821 | Allocate memory for them. */ | |
| b34976b6 | 9822 | relocs = FALSE; |
| 65f38f15 AM |
9823 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 9824 | { | |
| 9825 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
| 9826 | continue; | |
| 9827 | ||
| 4ce794b7 | 9828 | if (s == htab->brlt || s == htab->relbrlt) |
| 721956f4 AM |
9829 | /* These haven't been allocated yet; don't strip. */ |
| 9830 | continue; | |
| 33e44f2e AM |
9831 | else if (s == htab->elf.sgot |
| 9832 | || s == htab->elf.splt | |
| 9833 | || s == htab->elf.iplt | |
| c456f082 AM |
9834 | || s == htab->glink |
| 9835 | || s == htab->dynbss) | |
| 65f38f15 AM |
9836 | { |
| 9837 | /* Strip this section if we don't need it; see the | |
| 9838 | comment below. */ | |
| 5bd4f169 | 9839 | } |
| 58d180e8 AM |
9840 | else if (s == htab->glink_eh_frame) |
| 9841 | { | |
| 9842 | if (!bfd_is_abs_section (s->output_section)) | |
| 9843 | /* Not sized yet. */ | |
| 9844 | continue; | |
| 9845 | } | |
| 70cc837d | 9846 | else if (CONST_STRNEQ (s->name, ".rela")) |
| 5bd4f169 | 9847 | { |
| c456f082 | 9848 | if (s->size != 0) |
| 5bd4f169 | 9849 | { |
| 33e44f2e | 9850 | if (s != htab->elf.srelplt) |
| b34976b6 | 9851 | relocs = TRUE; |
| 5bd4f169 AM |
9852 | |
| 9853 | /* We use the reloc_count field as a counter if we need | |
| 9854 | to copy relocs into the output file. */ | |
| 9855 | s->reloc_count = 0; | |
| 9856 | } | |
| 9857 | } | |
| 65f38f15 | 9858 | else |
| 5bd4f169 AM |
9859 | { |
| 9860 | /* It's not one of our sections, so don't allocate space. */ | |
| 9861 | continue; | |
| 9862 | } | |
| 9863 | ||
| eea6121a | 9864 | if (s->size == 0) |
| 5bd4f169 | 9865 | { |
| c456f082 AM |
9866 | /* If we don't need this section, strip it from the |
| 9867 | output file. This is mostly to handle .rela.bss and | |
| 9868 | .rela.plt. We must create both sections in | |
| 9869 | create_dynamic_sections, because they must be created | |
| 9870 | before the linker maps input sections to output | |
| 9871 | sections. The linker does that before | |
| 9872 | adjust_dynamic_symbol is called, and it is that | |
| 9873 | function which decides whether anything needs to go | |
| 9874 | into these sections. */ | |
| 8423293d | 9875 | s->flags |= SEC_EXCLUDE; |
| 5bd4f169 AM |
9876 | continue; |
| 9877 | } | |
| 9878 | ||
| c456f082 | 9879 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 5f333394 AM |
9880 | continue; |
| 9881 | ||
| 65f38f15 AM |
9882 | /* Allocate memory for the section contents. We use bfd_zalloc |
| 9883 | here in case unused entries are not reclaimed before the | |
| 9884 | section's contents are written out. This should not happen, | |
| 411e1bfb AM |
9885 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
| 9886 | sections instead of garbage. | |
| 9887 | We also rely on the section contents being zero when writing | |
| 9888 | the GOT. */ | |
| eea6121a | 9889 | s->contents = bfd_zalloc (dynobj, s->size); |
| 65f38f15 | 9890 | if (s->contents == NULL) |
| b34976b6 | 9891 | return FALSE; |
| 5bd4f169 AM |
9892 | } |
| 9893 | ||
| c72f2fb2 | 9894 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| e717da7e | 9895 | { |
| 0c8d6e5c | 9896 | if (!is_ppc64_elf (ibfd)) |
| 7b53ace3 AM |
9897 | continue; |
| 9898 | ||
| e717da7e | 9899 | s = ppc64_elf_tdata (ibfd)->got; |
| 33e44f2e | 9900 | if (s != NULL && s != htab->elf.sgot) |
| e717da7e | 9901 | { |
| eea6121a | 9902 | if (s->size == 0) |
| 8423293d | 9903 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
9904 | else |
| 9905 | { | |
| eea6121a | 9906 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
9907 | if (s->contents == NULL) |
| 9908 | return FALSE; | |
| 9909 | } | |
| 9910 | } | |
| 9911 | s = ppc64_elf_tdata (ibfd)->relgot; | |
| 9912 | if (s != NULL) | |
| 9913 | { | |
| eea6121a | 9914 | if (s->size == 0) |
| 8423293d | 9915 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
9916 | else |
| 9917 | { | |
| eea6121a | 9918 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
9919 | if (s->contents == NULL) |
| 9920 | return FALSE; | |
| 9921 | relocs = TRUE; | |
| 9922 | s->reloc_count = 0; | |
| 9923 | } | |
| 9924 | } | |
| 9925 | } | |
| 9926 | ||
| e86ce104 | 9927 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 | 9928 | { |
| e8910a83 AM |
9929 | bfd_boolean tls_opt; |
| 9930 | ||
| 5bd4f169 AM |
9931 | /* Add some entries to the .dynamic section. We fill in the |
| 9932 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
| 9933 | must add the entries now so that we get the correct size for | |
| 9934 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
| 9935 | dynamic linker and used by the debugger. */ | |
| dc810e39 | 9936 | #define add_dynamic_entry(TAG, VAL) \ |
| 5a580b3a | 9937 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| dc810e39 | 9938 | |
| 36af4a4e | 9939 | if (info->executable) |
| 5bd4f169 | 9940 | { |
| dc810e39 | 9941 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| b34976b6 | 9942 | return FALSE; |
| 5bd4f169 AM |
9943 | } |
| 9944 | ||
| 33e44f2e | 9945 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
| 5bd4f169 | 9946 | { |
| dc810e39 AM |
9947 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 9948 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
| 9949 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
| 5d1634d7 AM |
9950 | || !add_dynamic_entry (DT_JMPREL, 0) |
| 9951 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
| b34976b6 | 9952 | return FALSE; |
| 5bd4f169 AM |
9953 | } |
| 9954 | ||
| ee67d69a | 9955 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
| 19397422 AM |
9956 | { |
| 9957 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
| 9958 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
| b34976b6 | 9959 | return FALSE; |
| 19397422 AM |
9960 | } |
| 9961 | ||
| e7d1c40c | 9962 | tls_opt = (!htab->params->no_tls_get_addr_opt |
| e8910a83 AM |
9963 | && htab->tls_get_addr_fd != NULL |
| 9964 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
| 9965 | if (tls_opt || !htab->opd_abi) | |
| 9966 | { | |
| 9967 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
| 9968 | return FALSE; | |
| 9969 | } | |
| a7f2871e | 9970 | |
| 5bd4f169 AM |
9971 | if (relocs) |
| 9972 | { | |
| dc810e39 AM |
9973 | if (!add_dynamic_entry (DT_RELA, 0) |
| 9974 | || !add_dynamic_entry (DT_RELASZ, 0) | |
| 9975 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
| b34976b6 | 9976 | return FALSE; |
| 5bd4f169 | 9977 | |
| 65f38f15 AM |
9978 | /* If any dynamic relocs apply to a read-only section, |
| 9979 | then we need a DT_TEXTREL entry. */ | |
| 248866a8 | 9980 | if ((info->flags & DF_TEXTREL) == 0) |
| a345bc8d | 9981 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
| 5bd4f169 | 9982 | |
| 65f38f15 | 9983 | if ((info->flags & DF_TEXTREL) != 0) |
| 5bd4f169 | 9984 | { |
| 65f38f15 | 9985 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| b34976b6 | 9986 | return FALSE; |
| 5bd4f169 | 9987 | } |
| 5bd4f169 | 9988 | } |
| 5bd4f169 | 9989 | } |
| 65f38f15 | 9990 | #undef add_dynamic_entry |
| 5bd4f169 | 9991 | |
| b34976b6 | 9992 | return TRUE; |
| 5bd4f169 AM |
9993 | } |
| 9994 | ||
| a345bc8d AM |
9995 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
| 9996 | ||
| 9997 | static bfd_boolean | |
| 9998 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
| 9999 | { | |
| 10000 | if (h->plt.plist != NULL | |
| 10001 | && !h->def_regular | |
| 10002 | && !h->pointer_equality_needed) | |
| 10003 | return FALSE; | |
| 10004 | ||
| 10005 | return _bfd_elf_hash_symbol (h); | |
| 10006 | } | |
| 10007 | ||
| 721956f4 | 10008 | /* Determine the type of stub needed, if any, for a call. */ |
| 5bd4f169 | 10009 | |
| 4ce794b7 AM |
10010 | static inline enum ppc_stub_type |
| 10011 | ppc_type_of_stub (asection *input_sec, | |
| 10012 | const Elf_Internal_Rela *rel, | |
| 10013 | struct ppc_link_hash_entry **hash, | |
| e054468f | 10014 | struct plt_entry **plt_ent, |
| 6911b7dc AM |
10015 | bfd_vma destination, |
| 10016 | unsigned long local_off) | |
| 5bd4f169 | 10017 | { |
| 721956f4 AM |
10018 | struct ppc_link_hash_entry *h = *hash; |
| 10019 | bfd_vma location; | |
| 10020 | bfd_vma branch_offset; | |
| 10021 | bfd_vma max_branch_offset; | |
| 4ce794b7 | 10022 | enum elf_ppc64_reloc_type r_type; |
| 5bd4f169 | 10023 | |
| 721956f4 AM |
10024 | if (h != NULL) |
| 10025 | { | |
| e054468f | 10026 | struct plt_entry *ent; |
| 7fe2b9a6 | 10027 | struct ppc_link_hash_entry *fdh = h; |
| b31867b6 AM |
10028 | if (h->oh != NULL |
| 10029 | && h->oh->is_func_descriptor) | |
| 7b8f6675 AM |
10030 | { |
| 10031 | fdh = ppc_follow_link (h->oh); | |
| 10032 | *hash = fdh; | |
| 10033 | } | |
| 8387904d | 10034 | |
| e054468f AM |
10035 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 10036 | if (ent->addend == rel->r_addend | |
| 10037 | && ent->plt.offset != (bfd_vma) -1) | |
| 10038 | { | |
| e054468f AM |
10039 | *plt_ent = ent; |
| 10040 | return ppc_stub_plt_call; | |
| 10041 | } | |
| 5bd4f169 | 10042 | |
| 7fe2b9a6 AM |
10043 | /* Here, we know we don't have a plt entry. If we don't have a |
| 10044 | either a defined function descriptor or a defined entry symbol | |
| 10045 | in a regular object file, then it is pointless trying to make | |
| 10046 | any other type of stub. */ | |
| 854b41e7 AM |
10047 | if (!is_static_defined (&fdh->elf) |
| 10048 | && !is_static_defined (&h->elf)) | |
| 721956f4 | 10049 | return ppc_stub_none; |
| 5d1634d7 | 10050 | } |
| e054468f AM |
10051 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
| 10052 | { | |
| 10053 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
| 10054 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 10055 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
| 10056 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
| 10057 | ||
| 10058 | if (local_plt[r_symndx] != NULL) | |
| 10059 | { | |
| 10060 | struct plt_entry *ent; | |
| 10061 | ||
| 10062 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
| 10063 | if (ent->addend == rel->r_addend | |
| 10064 | && ent->plt.offset != (bfd_vma) -1) | |
| 10065 | { | |
| 10066 | *plt_ent = ent; | |
| 10067 | return ppc_stub_plt_call; | |
| 10068 | } | |
| 10069 | } | |
| 10070 | } | |
| 5d1634d7 | 10071 | |
| 721956f4 AM |
10072 | /* Determine where the call point is. */ |
| 10073 | location = (input_sec->output_offset | |
| 10074 | + input_sec->output_section->vma | |
| 10075 | + rel->r_offset); | |
| 5d1634d7 | 10076 | |
| 721956f4 AM |
10077 | branch_offset = destination - location; |
| 10078 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 5d1634d7 | 10079 | |
| 721956f4 AM |
10080 | /* Determine if a long branch stub is needed. */ |
| 10081 | max_branch_offset = 1 << 25; | |
| 4ce794b7 | 10082 | if (r_type != R_PPC64_REL24) |
| 721956f4 | 10083 | max_branch_offset = 1 << 15; |
| 5d1634d7 | 10084 | |
| 6911b7dc | 10085 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
| 721956f4 AM |
10086 | /* We need a stub. Figure out whether a long_branch or plt_branch |
| 10087 | is needed later. */ | |
| 10088 | return ppc_stub_long_branch; | |
| 5d1634d7 | 10089 | |
| 721956f4 | 10090 | return ppc_stub_none; |
| 5d1634d7 AM |
10091 | } |
| 10092 | ||
| 794e51c0 AM |
10093 | /* With power7 weakly ordered memory model, it is possible for ld.so |
| 10094 | to update a plt entry in one thread and have another thread see a | |
| 10095 | stale zero toc entry. To avoid this we need some sort of acquire | |
| 10096 | barrier in the call stub. One solution is to make the load of the | |
| 10097 | toc word seem to appear to depend on the load of the function entry | |
| 10098 | word. Another solution is to test for r2 being zero, and branch to | |
| 10099 | the appropriate glink entry if so. | |
| 10100 | ||
| 10101 | . fake dep barrier compare | |
| 71a39c98 AM |
10102 | . ld 12,xxx(2) ld 12,xxx(2) |
| 10103 | . mtctr 12 mtctr 12 | |
| 10104 | . xor 11,12,12 ld 2,xxx+8(2) | |
| 794e51c0 AM |
10105 | . add 2,2,11 cmpldi 2,0 |
| 10106 | . ld 2,xxx+8(2) bnectr+ | |
| 10107 | . bctr b <glink_entry> | |
| 10108 | ||
| 10109 | The solution involving the compare turns out to be faster, so | |
| 10110 | that's what we use unless the branch won't reach. */ | |
| 10111 | ||
| 10112 | #define ALWAYS_USE_FAKE_DEP 0 | |
| 10113 | #define ALWAYS_EMIT_R2SAVE 0 | |
| 5d1634d7 | 10114 | |
| 5d1634d7 AM |
10115 | #define PPC_LO(v) ((v) & 0xffff) |
| 10116 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
| 10117 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
| 10118 | ||
| 794e51c0 AM |
10119 | static inline unsigned int |
| 10120 | plt_stub_size (struct ppc_link_hash_table *htab, | |
| 10121 | struct ppc_stub_hash_entry *stub_entry, | |
| 10122 | bfd_vma off) | |
| 10123 | { | |
| b9e5796b AM |
10124 | unsigned size = 12; |
| 10125 | ||
| 10126 | if (ALWAYS_EMIT_R2SAVE | |
| 10127 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10128 | size += 4; | |
| 10129 | if (PPC_HA (off) != 0) | |
| 794e51c0 | 10130 | size += 4; |
| b9e5796b AM |
10131 | if (htab->opd_abi) |
| 10132 | { | |
| 10133 | size += 4; | |
| e7d1c40c | 10134 | if (htab->params->plt_static_chain) |
| b9e5796b | 10135 | size += 4; |
| e7d1c40c | 10136 | if (htab->params->plt_thread_safe) |
| b9e5796b | 10137 | size += 8; |
| e7d1c40c | 10138 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
| b9e5796b AM |
10139 | size += 4; |
| 10140 | } | |
| 794e51c0 AM |
10141 | if (stub_entry->h != NULL |
| 10142 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 10143 | || stub_entry->h == htab->tls_get_addr) | |
| e7d1c40c | 10144 | && !htab->params->no_tls_get_addr_opt) |
| 794e51c0 AM |
10145 | size += 13 * 4; |
| 10146 | return size; | |
| 10147 | } | |
| 10148 | ||
| 10149 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
| 10150 | then return the padding needed to do so. */ | |
| 10151 | static inline unsigned int | |
| 10152 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
| 10153 | struct ppc_stub_hash_entry *stub_entry, | |
| 10154 | bfd_vma plt_off) | |
| 10155 | { | |
| e7d1c40c | 10156 | int stub_align = 1 << htab->params->plt_stub_align; |
| 794e51c0 AM |
10157 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
| 10158 | bfd_vma stub_off = stub_entry->stub_sec->size; | |
| 10159 | ||
| 10160 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
| 10161 | > (stub_size & -stub_align)) | |
| 10162 | return stub_align - (stub_off & (stub_align - 1)); | |
| 10163 | return 0; | |
| 10164 | } | |
| 10165 | ||
| 10166 | /* Build a .plt call stub. */ | |
| 10167 | ||
| 10168 | static inline bfd_byte * | |
| 10169 | build_plt_stub (struct ppc_link_hash_table *htab, | |
| 10170 | struct ppc_stub_hash_entry *stub_entry, | |
| 10171 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
| 10172 | { | |
| e7d1c40c | 10173 | bfd *obfd = htab->params->stub_bfd; |
| b9e5796b | 10174 | bfd_boolean plt_load_toc = htab->opd_abi; |
| e7d1c40c AM |
10175 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
| 10176 | bfd_boolean plt_thread_safe = htab->params->plt_thread_safe; | |
| 794e51c0 AM |
10177 | bfd_boolean use_fake_dep = plt_thread_safe; |
| 10178 | bfd_vma cmp_branch_off = 0; | |
| 10179 | ||
| 10180 | if (!ALWAYS_USE_FAKE_DEP | |
| b9e5796b | 10181 | && plt_load_toc |
| 794e51c0 AM |
10182 | && plt_thread_safe |
| 10183 | && !(stub_entry->h != NULL | |
| 10184 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 10185 | || stub_entry->h == htab->tls_get_addr) | |
| e7d1c40c | 10186 | && !htab->params->no_tls_get_addr_opt)) |
| 794e51c0 AM |
10187 | { |
| 10188 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
| b9e5796b AM |
10189 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
| 10190 | / PLT_ENTRY_SIZE (htab)); | |
| 794e51c0 AM |
10191 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; |
| 10192 | bfd_vma to, from; | |
| 10193 | ||
| 68d62958 AM |
10194 | if (pltindex > 32768) |
| 10195 | glinkoff += (pltindex - 32768) * 4; | |
| 794e51c0 AM |
10196 | to = (glinkoff |
| 10197 | + htab->glink->output_offset | |
| 10198 | + htab->glink->output_section->vma); | |
| 10199 | from = (p - stub_entry->stub_sec->contents | |
| 10200 | + 4 * (ALWAYS_EMIT_R2SAVE | |
| 10201 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10202 | + 4 * (PPC_HA (offset) != 0) | |
| 10203 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
| 10204 | != PPC_HA (offset)) | |
| 10205 | + 4 * (plt_static_chain != 0) | |
| 10206 | + 20 | |
| 10207 | + stub_entry->stub_sec->output_offset | |
| 10208 | + stub_entry->stub_sec->output_section->vma); | |
| 10209 | cmp_branch_off = to - from; | |
| 10210 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
| 10211 | } | |
| 10212 | ||
| ac2df442 AM |
10213 | if (PPC_HA (offset) != 0) |
| 10214 | { | |
| 176a0d42 AM |
10215 | if (r != NULL) |
| 10216 | { | |
| 794e51c0 AM |
10217 | if (ALWAYS_EMIT_R2SAVE |
| 10218 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10219 | r[0].r_offset += 4; | |
| 176a0d42 | 10220 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
| 3b421ab3 | 10221 | r[1].r_offset = r[0].r_offset + 4; |
| 176a0d42 AM |
10222 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
| 10223 | r[1].r_addend = r[0].r_addend; | |
| b9e5796b | 10224 | if (plt_load_toc) |
| 176a0d42 | 10225 | { |
| b9e5796b | 10226 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
| c7131b65 | 10227 | { |
| b9e5796b AM |
10228 | r[2].r_offset = r[1].r_offset + 4; |
| 10229 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
| 10230 | r[2].r_addend = r[0].r_addend; | |
| 10231 | } | |
| 10232 | else | |
| 10233 | { | |
| 10234 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
| 10235 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10236 | r[2].r_addend = r[0].r_addend + 8; | |
| 10237 | if (plt_static_chain) | |
| 10238 | { | |
| 10239 | r[3].r_offset = r[2].r_offset + 4; | |
| 10240 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10241 | r[3].r_addend = r[0].r_addend + 16; | |
| 10242 | } | |
| c7131b65 | 10243 | } |
| 176a0d42 AM |
10244 | } |
| 10245 | } | |
| 794e51c0 AM |
10246 | if (ALWAYS_EMIT_R2SAVE |
| 10247 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| a078d95a | 10248 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
| 397998fc AM |
10249 | if (plt_load_toc) |
| 10250 | { | |
| 10251 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
| 10252 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
| 10253 | } | |
| 10254 | else | |
| 10255 | { | |
| 10256 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
| 10257 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
| 10258 | } | |
| b9e5796b AM |
10259 | if (plt_load_toc |
| 10260 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
| ac2df442 | 10261 | { |
| 71a39c98 | 10262 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
| ac2df442 AM |
10263 | offset = 0; |
| 10264 | } | |
| 71a39c98 | 10265 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
| b9e5796b | 10266 | if (plt_load_toc) |
| 794e51c0 | 10267 | { |
| b9e5796b AM |
10268 | if (use_fake_dep) |
| 10269 | { | |
| 10270 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
| 10271 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
| 10272 | } | |
| 10273 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
| 10274 | if (plt_static_chain) | |
| 10275 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
| 794e51c0 | 10276 | } |
| ac2df442 AM |
10277 | } |
| 10278 | else | |
| 10279 | { | |
| 176a0d42 AM |
10280 | if (r != NULL) |
| 10281 | { | |
| 794e51c0 AM |
10282 | if (ALWAYS_EMIT_R2SAVE |
| 10283 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10284 | r[0].r_offset += 4; | |
| 176a0d42 | 10285 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
| b9e5796b | 10286 | if (plt_load_toc) |
| 176a0d42 | 10287 | { |
| b9e5796b | 10288 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
| c7131b65 | 10289 | { |
| b9e5796b AM |
10290 | r[1].r_offset = r[0].r_offset + 4; |
| 10291 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
| 10292 | r[1].r_addend = r[0].r_addend; | |
| 10293 | } | |
| 10294 | else | |
| 10295 | { | |
| 10296 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
| 10297 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10298 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
| 10299 | if (plt_static_chain) | |
| 10300 | { | |
| 10301 | r[2].r_offset = r[1].r_offset + 4; | |
| 10302 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10303 | r[2].r_addend = r[0].r_addend + 8; | |
| 10304 | } | |
| c7131b65 | 10305 | } |
| 176a0d42 AM |
10306 | } |
| 10307 | } | |
| 794e51c0 AM |
10308 | if (ALWAYS_EMIT_R2SAVE |
| 10309 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| a078d95a | 10310 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
| 71a39c98 | 10311 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
| b9e5796b AM |
10312 | if (plt_load_toc |
| 10313 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
| ac2df442 AM |
10314 | { |
| 10315 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
| 10316 | offset = 0; | |
| 10317 | } | |
| 71a39c98 | 10318 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
| b9e5796b | 10319 | if (plt_load_toc) |
| 794e51c0 | 10320 | { |
| b9e5796b AM |
10321 | if (use_fake_dep) |
| 10322 | { | |
| 10323 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
| 10324 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
| 10325 | } | |
| 10326 | if (plt_static_chain) | |
| 10327 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
| 10328 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
| 794e51c0 | 10329 | } |
| ac2df442 | 10330 | } |
| b9e5796b | 10331 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
| 794e51c0 AM |
10332 | { |
| 10333 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
| 10334 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
| 22aa0c7e | 10335 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
| 794e51c0 AM |
10336 | } |
| 10337 | else | |
| 10338 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
| 5d1634d7 AM |
10339 | return p; |
| 10340 | } | |
| 10341 | ||
| a7f2871e AM |
10342 | /* Build a special .plt call stub for __tls_get_addr. */ |
| 10343 | ||
| 10344 | #define LD_R11_0R3 0xe9630000 | |
| 10345 | #define LD_R12_0R3 0xe9830000 | |
| 10346 | #define MR_R0_R3 0x7c601b78 | |
| 10347 | #define CMPDI_R11_0 0x2c2b0000 | |
| 10348 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
| 10349 | #define BEQLR 0x4d820020 | |
| 10350 | #define MR_R3_R0 0x7c030378 | |
| a7f2871e AM |
10351 | #define STD_R11_0R1 0xf9610000 |
| 10352 | #define BCTRL 0x4e800421 | |
| 10353 | #define LD_R11_0R1 0xe9610000 | |
| a7f2871e AM |
10354 | #define MTLR_R11 0x7d6803a6 |
| 10355 | ||
| 10356 | static inline bfd_byte * | |
| 794e51c0 AM |
10357 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
| 10358 | struct ppc_stub_hash_entry *stub_entry, | |
| 10359 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
| a7f2871e | 10360 | { |
| e7d1c40c | 10361 | bfd *obfd = htab->params->stub_bfd; |
| 794e51c0 | 10362 | |
| a7f2871e AM |
10363 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
| 10364 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
| 10365 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
| 10366 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
| 10367 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
| 10368 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
| 10369 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
| 10370 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
| a078d95a | 10371 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
| a7f2871e AM |
10372 | |
| 10373 | if (r != NULL) | |
| 10374 | r[0].r_offset += 9 * 4; | |
| 794e51c0 | 10375 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
| a7f2871e AM |
10376 | bfd_put_32 (obfd, BCTRL, p - 4); |
| 10377 | ||
| a078d95a AM |
10378 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
| 10379 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; | |
| a7f2871e AM |
10380 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
| 10381 | bfd_put_32 (obfd, BLR, p), p += 4; | |
| 10382 | ||
| 10383 | return p; | |
| 10384 | } | |
| 10385 | ||
| 176a0d42 AM |
10386 | static Elf_Internal_Rela * |
| 10387 | get_relocs (asection *sec, int count) | |
| 10388 | { | |
| 10389 | Elf_Internal_Rela *relocs; | |
| 10390 | struct bfd_elf_section_data *elfsec_data; | |
| 10391 | ||
| 10392 | elfsec_data = elf_section_data (sec); | |
| 10393 | relocs = elfsec_data->relocs; | |
| 10394 | if (relocs == NULL) | |
| 10395 | { | |
| 10396 | bfd_size_type relsize; | |
| 10397 | relsize = sec->reloc_count * sizeof (*relocs); | |
| 10398 | relocs = bfd_alloc (sec->owner, relsize); | |
| 10399 | if (relocs == NULL) | |
| 10400 | return NULL; | |
| 10401 | elfsec_data->relocs = relocs; | |
| d4730f92 BS |
10402 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
| 10403 | sizeof (Elf_Internal_Shdr)); | |
| 10404 | if (elfsec_data->rela.hdr == NULL) | |
| 10405 | return NULL; | |
| 10406 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
| 10407 | * sizeof (Elf64_External_Rela)); | |
| 10408 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
| 176a0d42 AM |
10409 | sec->reloc_count = 0; |
| 10410 | } | |
| 10411 | relocs += sec->reloc_count; | |
| 10412 | sec->reloc_count += count; | |
| 10413 | return relocs; | |
| 10414 | } | |
| 10415 | ||
| aa374f67 | 10416 | static bfd_vma |
| 25f53a85 | 10417 | get_r2off (struct bfd_link_info *info, |
| aa374f67 AM |
10418 | struct ppc_stub_hash_entry *stub_entry) |
| 10419 | { | |
| 25f53a85 | 10420 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| aa374f67 AM |
10421 | bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off; |
| 10422 | ||
| 10423 | if (r2off == 0) | |
| 10424 | { | |
| 10425 | /* Support linking -R objects. Get the toc pointer from the | |
| 10426 | opd entry. */ | |
| 10427 | char buf[8]; | |
| b9e5796b AM |
10428 | if (!htab->opd_abi) |
| 10429 | return r2off; | |
| aa374f67 AM |
10430 | asection *opd = stub_entry->h->elf.root.u.def.section; |
| 10431 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
| 10432 | ||
| 10433 | if (strcmp (opd->name, ".opd") != 0 | |
| 10434 | || opd->reloc_count != 0) | |
| 10435 | { | |
| bc30df16 | 10436 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
| 25f53a85 | 10437 | stub_entry->h->elf.root.root.string); |
| aa374f67 AM |
10438 | bfd_set_error (bfd_error_bad_value); |
| 10439 | return 0; | |
| 10440 | } | |
| 10441 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
| 10442 | return 0; | |
| 10443 | r2off = bfd_get_64 (opd->owner, buf); | |
| 25f53a85 | 10444 | r2off -= elf_gp (info->output_bfd); |
| aa374f67 AM |
10445 | } |
| 10446 | r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off; | |
| 10447 | return r2off; | |
| 10448 | } | |
| 10449 | ||
| b34976b6 | 10450 | static bfd_boolean |
| 4ce794b7 | 10451 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 5d1634d7 | 10452 | { |
| 721956f4 AM |
10453 | struct ppc_stub_hash_entry *stub_entry; |
| 10454 | struct ppc_branch_hash_entry *br_entry; | |
| 5d1634d7 AM |
10455 | struct bfd_link_info *info; |
| 10456 | struct ppc_link_hash_table *htab; | |
| 721956f4 AM |
10457 | bfd_byte *loc; |
| 10458 | bfd_byte *p; | |
| ee75fd95 | 10459 | bfd_vma dest, off; |
| 721956f4 | 10460 | int size; |
| 176a0d42 | 10461 | Elf_Internal_Rela *r; |
| e054468f | 10462 | asection *plt; |
| 5d1634d7 | 10463 | |
| 721956f4 AM |
10464 | /* Massage our args to the form they really have. */ |
| 10465 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 4ce794b7 | 10466 | info = in_arg; |
| 5d1634d7 | 10467 | |
| 5d1634d7 | 10468 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
10469 | if (htab == NULL) |
| 10470 | return FALSE; | |
| 5d1634d7 | 10471 | |
| 721956f4 | 10472 | /* Make a note of the offset within the stubs for this entry. */ |
| eea6121a | 10473 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
| 97b639ba | 10474 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
| 721956f4 | 10475 | |
| 4ce794b7 | 10476 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
| 721956f4 | 10477 | switch (stub_entry->stub_type) |
| 5d1634d7 | 10478 | { |
| 721956f4 | 10479 | case ppc_stub_long_branch: |
| ad8e1ba5 | 10480 | case ppc_stub_long_branch_r2off: |
| 721956f4 | 10481 | /* Branches are relative. This is where we are going to. */ |
| 6911b7dc AM |
10482 | dest = (stub_entry->target_value |
| 10483 | + stub_entry->target_section->output_offset | |
| 10484 | + stub_entry->target_section->output_section->vma); | |
| 10485 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
| 10486 | off = dest; | |
| 5d1634d7 | 10487 | |
| 721956f4 AM |
10488 | /* And this is where we are coming from. */ |
| 10489 | off -= (stub_entry->stub_offset | |
| 97b639ba AM |
10490 | + stub_entry->stub_sec->output_offset |
| 10491 | + stub_entry->stub_sec->output_section->vma); | |
| e86ce104 | 10492 | |
| ac2df442 AM |
10493 | size = 4; |
| 10494 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| ad8e1ba5 | 10495 | { |
| 25f53a85 | 10496 | bfd_vma r2off = get_r2off (info, stub_entry); |
| ad8e1ba5 | 10497 | |
| aa374f67 AM |
10498 | if (r2off == 0) |
| 10499 | { | |
| 10500 | htab->stub_error = TRUE; | |
| 10501 | return FALSE; | |
| 10502 | } | |
| e7d1c40c | 10503 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
| ad8e1ba5 | 10504 | loc += 4; |
| ac2df442 AM |
10505 | size = 12; |
| 10506 | if (PPC_HA (r2off) != 0) | |
| 10507 | { | |
| 10508 | size = 16; | |
| e7d1c40c AM |
10509 | bfd_put_32 (htab->params->stub_bfd, |
| 10510 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| ac2df442 AM |
10511 | loc += 4; |
| 10512 | } | |
| e7d1c40c | 10513 | bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
| ad8e1ba5 | 10514 | loc += 4; |
| ac2df442 | 10515 | off -= size - 4; |
| ad8e1ba5 | 10516 | } |
| e7d1c40c | 10517 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
| ad8e1ba5 | 10518 | |
| 5c3dead3 AM |
10519 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
| 10520 | { | |
| bc30df16 AM |
10521 | info->callbacks->einfo |
| 10522 | (_("%P: long branch stub `%s' offset overflow\n"), | |
| 10523 | stub_entry->root.string); | |
| 5c3dead3 AM |
10524 | htab->stub_error = TRUE; |
| 10525 | return FALSE; | |
| 10526 | } | |
| ee75fd95 AM |
10527 | |
| 10528 | if (info->emitrelocations) | |
| 10529 | { | |
| 176a0d42 AM |
10530 | r = get_relocs (stub_entry->stub_sec, 1); |
| 10531 | if (r == NULL) | |
| 10532 | return FALSE; | |
| ee75fd95 AM |
10533 | r->r_offset = loc - stub_entry->stub_sec->contents; |
| 10534 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
| 10535 | r->r_addend = dest; | |
| 10536 | if (stub_entry->h != NULL) | |
| 10537 | { | |
| 10538 | struct elf_link_hash_entry **hashes; | |
| 10539 | unsigned long symndx; | |
| 10540 | struct ppc_link_hash_entry *h; | |
| 10541 | ||
| e7d1c40c | 10542 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
| ee75fd95 AM |
10543 | if (hashes == NULL) |
| 10544 | { | |
| 10545 | bfd_size_type hsize; | |
| 10546 | ||
| 10547 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
| e7d1c40c | 10548 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
| ee75fd95 AM |
10549 | if (hashes == NULL) |
| 10550 | return FALSE; | |
| e7d1c40c | 10551 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
| ee75fd95 AM |
10552 | htab->stub_globals = 1; |
| 10553 | } | |
| 10554 | symndx = htab->stub_globals++; | |
| 10555 | h = stub_entry->h; | |
| 10556 | hashes[symndx] = &h->elf; | |
| 10557 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
| 10558 | if (h->oh != NULL && h->oh->is_func) | |
| b31867b6 | 10559 | h = ppc_follow_link (h->oh); |
| ee75fd95 AM |
10560 | if (h->elf.root.u.def.section != stub_entry->target_section) |
| 10561 | /* H is an opd symbol. The addend must be zero. */ | |
| 10562 | r->r_addend = 0; | |
| 10563 | else | |
| 10564 | { | |
| 10565 | off = (h->elf.root.u.def.value | |
| 10566 | + h->elf.root.u.def.section->output_offset | |
| 10567 | + h->elf.root.u.def.section->output_section->vma); | |
| 10568 | r->r_addend -= off; | |
| 10569 | } | |
| 10570 | } | |
| 10571 | } | |
| 721956f4 | 10572 | break; |
| e86ce104 | 10573 | |
| 721956f4 | 10574 | case ppc_stub_plt_branch: |
| ad8e1ba5 | 10575 | case ppc_stub_plt_branch_r2off: |
| 721956f4 AM |
10576 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
| 10577 | stub_entry->root.string + 9, | |
| b34976b6 | 10578 | FALSE, FALSE); |
| 721956f4 AM |
10579 | if (br_entry == NULL) |
| 10580 | { | |
| 8de848d8 | 10581 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
| 25f53a85 | 10582 | stub_entry->root.string); |
| b34976b6 AM |
10583 | htab->stub_error = TRUE; |
| 10584 | return FALSE; | |
| 721956f4 AM |
10585 | } |
| 10586 | ||
| 176a0d42 AM |
10587 | dest = (stub_entry->target_value |
| 10588 | + stub_entry->target_section->output_offset | |
| 10589 | + stub_entry->target_section->output_section->vma); | |
| 6911b7dc AM |
10590 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| 10591 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
| 721956f4 | 10592 | |
| 176a0d42 | 10593 | bfd_put_64 (htab->brlt->owner, dest, |
| 4ce794b7 | 10594 | htab->brlt->contents + br_entry->offset); |
| 721956f4 | 10595 | |
| f94498ff | 10596 | if (br_entry->iter == htab->stub_iteration) |
| 721956f4 | 10597 | { |
| f94498ff | 10598 | br_entry->iter = 0; |
| 84f5d08e | 10599 | |
| f94498ff | 10600 | if (htab->relbrlt != NULL) |
| 84f5d08e | 10601 | { |
| f94498ff AM |
10602 | /* Create a reloc for the branch lookup table entry. */ |
| 10603 | Elf_Internal_Rela rela; | |
| 10604 | bfd_byte *rl; | |
| 10605 | ||
| 10606 | rela.r_offset = (br_entry->offset | |
| 10607 | + htab->brlt->output_offset | |
| 10608 | + htab->brlt->output_section->vma); | |
| 10609 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 10610 | rela.r_addend = dest; |
| f94498ff AM |
10611 | |
| 10612 | rl = htab->relbrlt->contents; | |
| 10613 | rl += (htab->relbrlt->reloc_count++ | |
| 10614 | * sizeof (Elf64_External_Rela)); | |
| 10615 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
| 10616 | } | |
| 10617 | else if (info->emitrelocations) | |
| 10618 | { | |
| 176a0d42 AM |
10619 | r = get_relocs (htab->brlt, 1); |
| 10620 | if (r == NULL) | |
| 10621 | return FALSE; | |
| 10622 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
| 10623 | normal reloc processing. Symbols and offsets are not | |
| 10624 | translated from input file to output file form, so | |
| 10625 | set up the offset per the output file. */ | |
| f94498ff AM |
10626 | r->r_offset = (br_entry->offset |
| 10627 | + htab->brlt->output_offset | |
| 10628 | + htab->brlt->output_section->vma); | |
| 10629 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 10630 | r->r_addend = dest; |
| 84f5d08e | 10631 | } |
| 84f5d08e | 10632 | } |
| 721956f4 | 10633 | |
| 176a0d42 AM |
10634 | dest = (br_entry->offset |
| 10635 | + htab->brlt->output_offset | |
| 10636 | + htab->brlt->output_section->vma); | |
| 10637 | ||
| 10638 | off = (dest | |
| 4ce794b7 | 10639 | - elf_gp (htab->brlt->output_section->owner) |
| ad8e1ba5 | 10640 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 10641 | |
| ad8e1ba5 | 10642 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 5d1634d7 | 10643 | { |
| 25f53a85 | 10644 | info->callbacks->einfo |
| bc30df16 | 10645 | (_("%P: linkage table error against `%T'\n"), |
| 721956f4 | 10646 | stub_entry->root.string); |
| 5d1634d7 | 10647 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
10648 | htab->stub_error = TRUE; |
| 10649 | return FALSE; | |
| 5d1634d7 | 10650 | } |
| 41bd81ab | 10651 | |
| 176a0d42 AM |
10652 | if (info->emitrelocations) |
| 10653 | { | |
| 10654 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
| 10655 | if (r == NULL) | |
| 10656 | return FALSE; | |
| 10657 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
| 7cfbafbc AM |
10658 | if (bfd_big_endian (info->output_bfd)) |
| 10659 | r[0].r_offset += 2; | |
| 00f412ee | 10660 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
| 176a0d42 AM |
10661 | r[0].r_offset += 4; |
| 10662 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10663 | r[0].r_addend = dest; | |
| 10664 | if (PPC_HA (off) != 0) | |
| 10665 | { | |
| 10666 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
| 10667 | r[1].r_offset = r[0].r_offset + 4; | |
| 10668 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10669 | r[1].r_addend = r[0].r_addend; | |
| 10670 | } | |
| 10671 | } | |
| 10672 | ||
| 00f412ee | 10673 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| ad8e1ba5 | 10674 | { |
| 176a0d42 | 10675 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
10676 | { |
| 10677 | size = 16; | |
| e7d1c40c | 10678 | bfd_put_32 (htab->params->stub_bfd, |
| 397998fc | 10679 | ADDIS_R12_R2 | PPC_HA (off), loc); |
| ac2df442 | 10680 | loc += 4; |
| e7d1c40c | 10681 | bfd_put_32 (htab->params->stub_bfd, |
| 397998fc | 10682 | LD_R12_0R12 | PPC_LO (off), loc); |
| ac2df442 AM |
10683 | } |
| 10684 | else | |
| 10685 | { | |
| 10686 | size = 12; | |
| e7d1c40c AM |
10687 | bfd_put_32 (htab->params->stub_bfd, |
| 10688 | LD_R12_0R2 | PPC_LO (off), loc); | |
| ac2df442 | 10689 | } |
| ad8e1ba5 AM |
10690 | } |
| 10691 | else | |
| 10692 | { | |
| 25f53a85 | 10693 | bfd_vma r2off = get_r2off (info, stub_entry); |
| aa374f67 | 10694 | |
| 00f412ee | 10695 | if (r2off == 0 && htab->opd_abi) |
| aa374f67 AM |
10696 | { |
| 10697 | htab->stub_error = TRUE; | |
| 10698 | return FALSE; | |
| 10699 | } | |
| ad8e1ba5 | 10700 | |
| e7d1c40c | 10701 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
| ad8e1ba5 | 10702 | loc += 4; |
| 00f412ee | 10703 | size = 16; |
| 176a0d42 | 10704 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
10705 | { |
| 10706 | size += 4; | |
| e7d1c40c | 10707 | bfd_put_32 (htab->params->stub_bfd, |
| 397998fc | 10708 | ADDIS_R12_R2 | PPC_HA (off), loc); |
| ac2df442 | 10709 | loc += 4; |
| e7d1c40c | 10710 | bfd_put_32 (htab->params->stub_bfd, |
| 397998fc | 10711 | LD_R12_0R12 | PPC_LO (off), loc); |
| ac2df442 AM |
10712 | } |
| 10713 | else | |
| e7d1c40c | 10714 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
| ac2df442 AM |
10715 | |
| 10716 | if (PPC_HA (r2off) != 0) | |
| 10717 | { | |
| 10718 | size += 4; | |
| 00f412ee | 10719 | loc += 4; |
| e7d1c40c AM |
10720 | bfd_put_32 (htab->params->stub_bfd, |
| 10721 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| 00f412ee AM |
10722 | } |
| 10723 | if (PPC_LO (r2off) != 0) | |
| 10724 | { | |
| 10725 | size += 4; | |
| ac2df442 | 10726 | loc += 4; |
| e7d1c40c AM |
10727 | bfd_put_32 (htab->params->stub_bfd, |
| 10728 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
| ac2df442 | 10729 | } |
| ad8e1ba5 AM |
10730 | } |
| 10731 | loc += 4; | |
| e7d1c40c | 10732 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc); |
| ad8e1ba5 | 10733 | loc += 4; |
| e7d1c40c | 10734 | bfd_put_32 (htab->params->stub_bfd, BCTR, loc); |
| 721956f4 | 10735 | break; |
| 5d1634d7 | 10736 | |
| 721956f4 | 10737 | case ppc_stub_plt_call: |
| 794e51c0 | 10738 | case ppc_stub_plt_call_r2save: |
| e054468f | 10739 | if (stub_entry->h != NULL |
| b31867b6 AM |
10740 | && stub_entry->h->is_func_descriptor |
| 10741 | && stub_entry->h->oh != NULL) | |
| c862ae31 | 10742 | { |
| b31867b6 AM |
10743 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
| 10744 | ||
| 10745 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
| 10746 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
| 10747 | FIXME: We used to define the symbol on one of the call | |
| 10748 | stubs instead, which is why we test symbol section id | |
| 10749 | against htab->top_id in various places. Likely all | |
| 10750 | these checks could now disappear. */ | |
| 10751 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
| 10752 | fh->elf.root.type = bfd_link_hash_undefweak; | |
| 9507a174 AM |
10753 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
| 10754 | fh->was_undefined = 0; | |
| c862ae31 AM |
10755 | } |
| 10756 | ||
| 721956f4 | 10757 | /* Now build the stub. */ |
| e054468f | 10758 | dest = stub_entry->plt_ent->plt.offset & ~1; |
| 176a0d42 | 10759 | if (dest >= (bfd_vma) -2) |
| 721956f4 AM |
10760 | abort (); |
| 10761 | ||
| 33e44f2e | 10762 | plt = htab->elf.splt; |
| 25f23106 AM |
10763 | if (!htab->elf.dynamic_sections_created |
| 10764 | || stub_entry->h == NULL | |
| 10765 | || stub_entry->h->elf.dynindx == -1) | |
| 33e44f2e | 10766 | plt = htab->elf.iplt; |
| e054468f AM |
10767 | |
| 10768 | dest += plt->output_offset + plt->output_section->vma; | |
| 10769 | ||
| 10770 | if (stub_entry->h == NULL | |
| 10771 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
| 10772 | { | |
| 10773 | Elf_Internal_Rela rela; | |
| 10774 | bfd_byte *rl; | |
| 10775 | ||
| 10776 | rela.r_offset = dest; | |
| ee67d69a AM |
10777 | if (htab->opd_abi) |
| 10778 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
| 10779 | else | |
| 10780 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| e054468f AM |
10781 | rela.r_addend = (stub_entry->target_value |
| 10782 | + stub_entry->target_section->output_offset | |
| 10783 | + stub_entry->target_section->output_section->vma); | |
| 10784 | ||
| 33e44f2e AM |
10785 | rl = (htab->elf.irelplt->contents |
| 10786 | + (htab->elf.irelplt->reloc_count++ | |
| 25f23106 AM |
10787 | * sizeof (Elf64_External_Rela))); |
| 10788 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
| e054468f AM |
10789 | stub_entry->plt_ent->plt.offset |= 1; |
| 10790 | } | |
| 176a0d42 AM |
10791 | |
| 10792 | off = (dest | |
| e054468f | 10793 | - elf_gp (plt->output_section->owner) |
| 176a0d42 | 10794 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 10795 | |
| ad8e1ba5 | 10796 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 721956f4 | 10797 | { |
| 25f53a85 | 10798 | info->callbacks->einfo |
| bc30df16 | 10799 | (_("%P: linkage table error against `%T'\n"), |
| e054468f AM |
10800 | stub_entry->h != NULL |
| 10801 | ? stub_entry->h->elf.root.root.string | |
| 10802 | : "<local sym>"); | |
| 721956f4 | 10803 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
10804 | htab->stub_error = TRUE; |
| 10805 | return FALSE; | |
| 721956f4 AM |
10806 | } |
| 10807 | ||
| e7d1c40c | 10808 | if (htab->params->plt_stub_align != 0) |
| 794e51c0 AM |
10809 | { |
| 10810 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
| 10811 | ||
| 10812 | stub_entry->stub_sec->size += pad; | |
| 10813 | stub_entry->stub_offset = stub_entry->stub_sec->size; | |
| 10814 | loc += pad; | |
| 10815 | } | |
| 10816 | ||
| 176a0d42 AM |
10817 | r = NULL; |
| 10818 | if (info->emitrelocations) | |
| 10819 | { | |
| 10820 | r = get_relocs (stub_entry->stub_sec, | |
| 3ba720c7 AM |
10821 | ((PPC_HA (off) != 0) |
| 10822 | + (htab->opd_abi | |
| e7d1c40c | 10823 | ? 2 + (htab->params->plt_static_chain |
| 3ba720c7 AM |
10824 | && PPC_HA (off + 16) == PPC_HA (off)) |
| 10825 | : 1))); | |
| 176a0d42 AM |
10826 | if (r == NULL) |
| 10827 | return FALSE; | |
| 10828 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
| 7cfbafbc AM |
10829 | if (bfd_big_endian (info->output_bfd)) |
| 10830 | r[0].r_offset += 2; | |
| 176a0d42 AM |
10831 | r[0].r_addend = dest; |
| 10832 | } | |
| a7f2871e AM |
10833 | if (stub_entry->h != NULL |
| 10834 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 10835 | || stub_entry->h == htab->tls_get_addr) | |
| e7d1c40c | 10836 | && !htab->params->no_tls_get_addr_opt) |
| 794e51c0 | 10837 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
| a7f2871e | 10838 | else |
| 794e51c0 | 10839 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
| 721956f4 AM |
10840 | size = p - loc; |
| 10841 | break; | |
| 10842 | ||
| 10843 | default: | |
| 10844 | BFD_FAIL (); | |
| b34976b6 | 10845 | return FALSE; |
| 721956f4 AM |
10846 | } |
| 10847 | ||
| eea6121a | 10848 | stub_entry->stub_sec->size += size; |
| 97b639ba | 10849 | |
| e7d1c40c | 10850 | if (htab->params->emit_stub_syms) |
| 97b639ba AM |
10851 | { |
| 10852 | struct elf_link_hash_entry *h; | |
| ee75fd95 AM |
10853 | size_t len1, len2; |
| 10854 | char *name; | |
| 10855 | const char *const stub_str[] = { "long_branch", | |
| 10856 | "long_branch_r2off", | |
| 10857 | "plt_branch", | |
| 10858 | "plt_branch_r2off", | |
| 794e51c0 | 10859 | "plt_call", |
| ee75fd95 AM |
10860 | "plt_call" }; |
| 10861 | ||
| 10862 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
| 10863 | len2 = strlen (stub_entry->root.string); | |
| 10864 | name = bfd_malloc (len1 + len2 + 2); | |
| 10865 | if (name == NULL) | |
| 10866 | return FALSE; | |
| 10867 | memcpy (name, stub_entry->root.string, 9); | |
| 10868 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
| 10869 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
| 10870 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
| 97b639ba AM |
10871 | if (h == NULL) |
| 10872 | return FALSE; | |
| 10873 | if (h->root.type == bfd_link_hash_new) | |
| 10874 | { | |
| 10875 | h->root.type = bfd_link_hash_defined; | |
| 10876 | h->root.u.def.section = stub_entry->stub_sec; | |
| 10877 | h->root.u.def.value = stub_entry->stub_offset; | |
| f5385ebf AM |
10878 | h->ref_regular = 1; |
| 10879 | h->def_regular = 1; | |
| 10880 | h->ref_regular_nonweak = 1; | |
| 10881 | h->forced_local = 1; | |
| 10882 | h->non_elf = 0; | |
| 97b639ba AM |
10883 | } |
| 10884 | } | |
| 10885 | ||
| b34976b6 | 10886 | return TRUE; |
| 721956f4 AM |
10887 | } |
| 10888 | ||
| 10889 | /* As above, but don't actually build the stub. Just bump offset so | |
| 10890 | we know stub section sizes, and select plt_branch stubs where | |
| 10891 | long_branch stubs won't do. */ | |
| 10892 | ||
| b34976b6 | 10893 | static bfd_boolean |
| 4ce794b7 | 10894 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 721956f4 AM |
10895 | { |
| 10896 | struct ppc_stub_hash_entry *stub_entry; | |
| 63bc6f6c | 10897 | struct bfd_link_info *info; |
| 721956f4 AM |
10898 | struct ppc_link_hash_table *htab; |
| 10899 | bfd_vma off; | |
| 10900 | int size; | |
| 10901 | ||
| 10902 | /* Massage our args to the form they really have. */ | |
| 10903 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 63bc6f6c AM |
10904 | info = in_arg; |
| 10905 | ||
| 10906 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
10907 | if (htab == NULL) |
| 10908 | return FALSE; | |
| 721956f4 | 10909 | |
| 794e51c0 AM |
10910 | if (stub_entry->stub_type == ppc_stub_plt_call |
| 10911 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 721956f4 | 10912 | { |
| e054468f AM |
10913 | asection *plt; |
| 10914 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
| 58ac9f71 | 10915 | if (off >= (bfd_vma) -2) |
| 411e1bfb | 10916 | abort (); |
| 33e44f2e | 10917 | plt = htab->elf.splt; |
| 25f23106 AM |
10918 | if (!htab->elf.dynamic_sections_created |
| 10919 | || stub_entry->h == NULL | |
| 10920 | || stub_entry->h->elf.dynindx == -1) | |
| 33e44f2e | 10921 | plt = htab->elf.iplt; |
| e054468f AM |
10922 | off += (plt->output_offset |
| 10923 | + plt->output_section->vma | |
| 10924 | - elf_gp (plt->output_section->owner) | |
| ad8e1ba5 | 10925 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 10926 | |
| 794e51c0 | 10927 | size = plt_stub_size (htab, stub_entry, off); |
| e7d1c40c | 10928 | if (htab->params->plt_stub_align) |
| 794e51c0 | 10929 | size += plt_stub_pad (htab, stub_entry, off); |
| 176a0d42 AM |
10930 | if (info->emitrelocations) |
| 10931 | { | |
| 10932 | stub_entry->stub_sec->reloc_count | |
| b9e5796b AM |
10933 | += ((PPC_HA (off) != 0) |
| 10934 | + (htab->opd_abi | |
| e7d1c40c | 10935 | ? 2 + (htab->params->plt_static_chain |
| b9e5796b AM |
10936 | && PPC_HA (off + 16) == PPC_HA (off)) |
| 10937 | : 1)); | |
| 176a0d42 AM |
10938 | stub_entry->stub_sec->flags |= SEC_RELOC; |
| 10939 | } | |
| 721956f4 AM |
10940 | } |
| 10941 | else | |
| 10942 | { | |
| ad8e1ba5 AM |
10943 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
| 10944 | variants. */ | |
| ac2df442 | 10945 | bfd_vma r2off = 0; |
| 6911b7dc | 10946 | bfd_vma local_off = 0; |
| ac2df442 | 10947 | |
| 721956f4 AM |
10948 | off = (stub_entry->target_value |
| 10949 | + stub_entry->target_section->output_offset | |
| 10950 | + stub_entry->target_section->output_section->vma); | |
| eea6121a | 10951 | off -= (stub_entry->stub_sec->size |
| 721956f4 AM |
10952 | + stub_entry->stub_sec->output_offset |
| 10953 | + stub_entry->stub_sec->output_section->vma); | |
| 10954 | ||
| ad8e1ba5 AM |
10955 | /* Reset the stub type from the plt variant in case we now |
| 10956 | can reach with a shorter stub. */ | |
| 10957 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
| 10958 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
| 10959 | ||
| 10960 | size = 4; | |
| 10961 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| 10962 | { | |
| 25f53a85 | 10963 | r2off = get_r2off (info, stub_entry); |
| b9e5796b | 10964 | if (r2off == 0 && htab->opd_abi) |
| aa374f67 AM |
10965 | { |
| 10966 | htab->stub_error = TRUE; | |
| 10967 | return FALSE; | |
| 10968 | } | |
| ac2df442 AM |
10969 | size = 12; |
| 10970 | if (PPC_HA (r2off) != 0) | |
| 10971 | size = 16; | |
| 10972 | off -= size - 4; | |
| ad8e1ba5 AM |
10973 | } |
| 10974 | ||
| 6911b7dc AM |
10975 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
| 10976 | ||
| b9e5796b AM |
10977 | /* If the branch offset if too big, use a ppc_stub_plt_branch. |
| 10978 | Do the same for -R objects without function descriptors. */ | |
| 10979 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
| 10980 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
| 10981 | && r2off == 0)) | |
| 721956f4 AM |
10982 | { |
| 10983 | struct ppc_branch_hash_entry *br_entry; | |
| 10984 | ||
| 10985 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
| 10986 | stub_entry->root.string + 9, | |
| b34976b6 | 10987 | TRUE, FALSE); |
| 721956f4 AM |
10988 | if (br_entry == NULL) |
| 10989 | { | |
| 8de848d8 | 10990 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
| 25f53a85 | 10991 | stub_entry->root.string); |
| b34976b6 AM |
10992 | htab->stub_error = TRUE; |
| 10993 | return FALSE; | |
| 721956f4 AM |
10994 | } |
| 10995 | ||
| 10996 | if (br_entry->iter != htab->stub_iteration) | |
| 10997 | { | |
| 10998 | br_entry->iter = htab->stub_iteration; | |
| eea6121a AM |
10999 | br_entry->offset = htab->brlt->size; |
| 11000 | htab->brlt->size += 8; | |
| 63bc6f6c | 11001 | |
| ee75fd95 | 11002 | if (htab->relbrlt != NULL) |
| eea6121a | 11003 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
| 84f5d08e AM |
11004 | else if (info->emitrelocations) |
| 11005 | { | |
| 11006 | htab->brlt->reloc_count += 1; | |
| 11007 | htab->brlt->flags |= SEC_RELOC; | |
| 11008 | } | |
| 721956f4 | 11009 | } |
| ad8e1ba5 AM |
11010 | |
| 11011 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
| ac2df442 AM |
11012 | off = (br_entry->offset |
| 11013 | + htab->brlt->output_offset | |
| 11014 | + htab->brlt->output_section->vma | |
| 11015 | - elf_gp (htab->brlt->output_section->owner) | |
| 11016 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
| 11017 | ||
| 176a0d42 AM |
11018 | if (info->emitrelocations) |
| 11019 | { | |
| 11020 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
| 11021 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
| 11022 | } | |
| 11023 | ||
| 00f412ee | 11024 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| ac2df442 AM |
11025 | { |
| 11026 | size = 12; | |
| 176a0d42 | 11027 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
11028 | size = 16; |
| 11029 | } | |
| 11030 | else | |
| 11031 | { | |
| 00f412ee | 11032 | size = 16; |
| 176a0d42 | 11033 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
11034 | size += 4; |
| 11035 | ||
| 11036 | if (PPC_HA (r2off) != 0) | |
| 11037 | size += 4; | |
| 00f412ee AM |
11038 | if (PPC_LO (r2off) != 0) |
| 11039 | size += 4; | |
| ac2df442 | 11040 | } |
| 721956f4 | 11041 | } |
| 84f5d08e AM |
11042 | else if (info->emitrelocations) |
| 11043 | { | |
| 11044 | stub_entry->stub_sec->reloc_count += 1; | |
| 11045 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
| 11046 | } | |
| 721956f4 AM |
11047 | } |
| 11048 | ||
| eea6121a | 11049 | stub_entry->stub_sec->size += size; |
| b34976b6 | 11050 | return TRUE; |
| 721956f4 AM |
11051 | } |
| 11052 | ||
| 11053 | /* Set up various things so that we can make a list of input sections | |
| 11054 | for each output section included in the link. Returns -1 on error, | |
| cedb70c5 | 11055 | 0 when no stubs will be needed, and 1 on success. */ |
| 721956f4 AM |
11056 | |
| 11057 | int | |
| e7d1c40c | 11058 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
| 721956f4 AM |
11059 | { |
| 11060 | bfd *input_bfd; | |
| 734b6cf9 | 11061 | int top_id, top_index, id; |
| 721956f4 | 11062 | asection *section; |
| 734b6cf9 | 11063 | asection **input_list; |
| 721956f4 AM |
11064 | bfd_size_type amt; |
| 11065 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11066 | ||
| 4dfe6ac6 NC |
11067 | if (htab == NULL) |
| 11068 | return -1; | |
| 4c52953f | 11069 | |
| 1e2f5b6e | 11070 | /* Find the top input section id. */ |
| 3d6f9012 | 11071 | for (input_bfd = info->input_bfds, top_id = 3; |
| 721956f4 | 11072 | input_bfd != NULL; |
| c72f2fb2 | 11073 | input_bfd = input_bfd->link.next) |
| 721956f4 | 11074 | { |
| 721956f4 AM |
11075 | for (section = input_bfd->sections; |
| 11076 | section != NULL; | |
| 11077 | section = section->next) | |
| 11078 | { | |
| 11079 | if (top_id < section->id) | |
| 11080 | top_id = section->id; | |
| 11081 | } | |
| 11082 | } | |
| 721956f4 | 11083 | |
| 8f3bab57 | 11084 | htab->top_id = top_id; |
| 721956f4 | 11085 | amt = sizeof (struct map_stub) * (top_id + 1); |
| 4ce794b7 | 11086 | htab->stub_group = bfd_zmalloc (amt); |
| 721956f4 AM |
11087 | if (htab->stub_group == NULL) |
| 11088 | return -1; | |
| 11089 | ||
| 3d6f9012 AM |
11090 | /* Set toc_off for com, und, abs and ind sections. */ |
| 11091 | for (id = 0; id < 3; id++) | |
| 11092 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
| 721956f4 | 11093 | |
| 734b6cf9 AM |
11094 | /* We can't use output_bfd->section_count here to find the top output |
| 11095 | section index as some sections may have been removed, and | |
| 8423293d | 11096 | strip_excluded_output_sections doesn't renumber the indices. */ |
| 927be08e | 11097 | for (section = info->output_bfd->sections, top_index = 0; |
| 734b6cf9 AM |
11098 | section != NULL; |
| 11099 | section = section->next) | |
| 11100 | { | |
| 11101 | if (top_index < section->index) | |
| 11102 | top_index = section->index; | |
| 11103 | } | |
| 11104 | ||
| 11105 | htab->top_index = top_index; | |
| 11106 | amt = sizeof (asection *) * (top_index + 1); | |
| 4ce794b7 | 11107 | input_list = bfd_zmalloc (amt); |
| 734b6cf9 AM |
11108 | htab->input_list = input_list; |
| 11109 | if (input_list == NULL) | |
| 11110 | return -1; | |
| 11111 | ||
| 721956f4 AM |
11112 | return 1; |
| 11113 | } | |
| 11114 | ||
| 927be08e AM |
11115 | /* Set up for first pass at multitoc partitioning. */ |
| 11116 | ||
| 11117 | void | |
| 11118 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
| 11119 | { | |
| 11120 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11121 | ||
| 1c865ab2 | 11122 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
| 927be08e AM |
11123 | htab->toc_bfd = NULL; |
| 11124 | htab->toc_first_sec = NULL; | |
| 11125 | } | |
| 11126 | ||
| e717da7e AM |
11127 | /* The linker repeatedly calls this function for each TOC input section |
| 11128 | and linker generated GOT section. Group input bfds such that the toc | |
| 927be08e | 11129 | within a group is less than 64k in size. */ |
| ad8e1ba5 | 11130 | |
| 927be08e | 11131 | bfd_boolean |
| 4ce794b7 | 11132 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
| ad8e1ba5 AM |
11133 | { |
| 11134 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| d77c8a4b | 11135 | bfd_vma addr, off, limit; |
| ad8e1ba5 | 11136 | |
| 4dfe6ac6 NC |
11137 | if (htab == NULL) |
| 11138 | return FALSE; | |
| 11139 | ||
| 927be08e | 11140 | if (!htab->second_toc_pass) |
| 4c52953f | 11141 | { |
| 927be08e | 11142 | /* Keep track of the first .toc or .got section for this input bfd. */ |
| a4fd3de5 AM |
11143 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
| 11144 | ||
| 11145 | if (new_bfd) | |
| bf102f86 AM |
11146 | { |
| 11147 | htab->toc_bfd = isec->owner; | |
| 11148 | htab->toc_first_sec = isec; | |
| 11149 | } | |
| 927be08e | 11150 | |
| bf102f86 AM |
11151 | addr = isec->output_offset + isec->output_section->vma; |
| 11152 | off = addr - htab->toc_curr; | |
| d77c8a4b AM |
11153 | limit = 0x80008000; |
| 11154 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
| 11155 | limit = 0x10000; | |
| 11156 | if (off + isec->size > limit) | |
| bf102f86 AM |
11157 | { |
| 11158 | addr = (htab->toc_first_sec->output_offset | |
| 11159 | + htab->toc_first_sec->output_section->vma); | |
| 11160 | htab->toc_curr = addr; | |
| 11161 | } | |
| 99877b66 | 11162 | |
| 927be08e AM |
11163 | /* toc_curr is the base address of this toc group. Set elf_gp |
| 11164 | for the input section to be the offset relative to the | |
| 11165 | output toc base plus 0x8000. Making the input elf_gp an | |
| 11166 | offset allows us to move the toc as a whole without | |
| 11167 | recalculating input elf_gp. */ | |
| 11168 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
| 11169 | off += TOC_BASE_OFF; | |
| 11170 | ||
| 11171 | /* Die if someone uses a linker script that doesn't keep input | |
| 11172 | file .toc and .got together. */ | |
| a4fd3de5 AM |
11173 | if (new_bfd |
| 11174 | && elf_gp (isec->owner) != 0 | |
| 927be08e AM |
11175 | && elf_gp (isec->owner) != off) |
| 11176 | return FALSE; | |
| 11177 | ||
| 11178 | elf_gp (isec->owner) = off; | |
| 11179 | return TRUE; | |
| 4c52953f | 11180 | } |
| 927be08e AM |
11181 | |
| 11182 | /* During the second pass toc_first_sec points to the start of | |
| 11183 | a toc group, and toc_curr is used to track the old elf_gp. | |
| 11184 | We use toc_bfd to ensure we only look at each bfd once. */ | |
| 11185 | if (htab->toc_bfd == isec->owner) | |
| 11186 | return TRUE; | |
| 11187 | htab->toc_bfd = isec->owner; | |
| 11188 | ||
| 11189 | if (htab->toc_first_sec == NULL | |
| 11190 | || htab->toc_curr != elf_gp (isec->owner)) | |
| 11191 | { | |
| 11192 | htab->toc_curr = elf_gp (isec->owner); | |
| 11193 | htab->toc_first_sec = isec; | |
| 11194 | } | |
| 11195 | addr = (htab->toc_first_sec->output_offset | |
| 11196 | + htab->toc_first_sec->output_section->vma); | |
| 11197 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
| 11198 | elf_gp (isec->owner) = off; | |
| 11199 | ||
| 11200 | return TRUE; | |
| ad8e1ba5 AM |
11201 | } |
| 11202 | ||
| 927be08e AM |
11203 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
| 11204 | symbol H. */ | |
| 11205 | ||
| 11206 | static bfd_boolean | |
| 11207 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 11208 | { | |
| 11209 | if (h->root.type == bfd_link_hash_indirect) | |
| 11210 | return TRUE; | |
| 11211 | ||
| 927be08e AM |
11212 | merge_got_entries (&h->got.glist); |
| 11213 | ||
| 11214 | return TRUE; | |
| 11215 | } | |
| 11216 | ||
| 11217 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
| 11218 | symbol H. */ | |
| 11219 | ||
| 11220 | static bfd_boolean | |
| 11221 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
| 11222 | { | |
| 11223 | struct got_entry *gent; | |
| 11224 | ||
| 11225 | if (h->root.type == bfd_link_hash_indirect) | |
| 11226 | return TRUE; | |
| 11227 | ||
| 927be08e AM |
11228 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 11229 | if (!gent->is_indirect) | |
| 11230 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
| 11231 | return TRUE; | |
| 11232 | } | |
| 11233 | ||
| 11234 | /* Called on the first multitoc pass after the last call to | |
| 11235 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
| 11236 | entries. */ | |
| 11237 | ||
| 11238 | bfd_boolean | |
| 11239 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
| ad8e1ba5 AM |
11240 | { |
| 11241 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 927be08e AM |
11242 | struct bfd *ibfd, *ibfd2; |
| 11243 | bfd_boolean done_something; | |
| 11244 | ||
| 11245 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
| ad8e1ba5 | 11246 | |
| 7865406b AM |
11247 | if (!htab->do_multi_toc) |
| 11248 | return FALSE; | |
| 11249 | ||
| d0fae19d | 11250 | /* Merge global sym got entries within a toc group. */ |
| 927be08e AM |
11251 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
| 11252 | ||
| 11253 | /* And tlsld_got. */ | |
| c72f2fb2 | 11254 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11255 | { |
| 11256 | struct got_entry *ent, *ent2; | |
| 11257 | ||
| 11258 | if (!is_ppc64_elf (ibfd)) | |
| 11259 | continue; | |
| 11260 | ||
| 11261 | ent = ppc64_tlsld_got (ibfd); | |
| 11262 | if (!ent->is_indirect | |
| 11263 | && ent->got.offset != (bfd_vma) -1) | |
| 11264 | { | |
| c72f2fb2 | 11265 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
| 927be08e AM |
11266 | { |
| 11267 | if (!is_ppc64_elf (ibfd2)) | |
| 11268 | continue; | |
| 11269 | ||
| 11270 | ent2 = ppc64_tlsld_got (ibfd2); | |
| 11271 | if (!ent2->is_indirect | |
| 11272 | && ent2->got.offset != (bfd_vma) -1 | |
| 11273 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
| 11274 | { | |
| 11275 | ent2->is_indirect = TRUE; | |
| 11276 | ent2->got.ent = ent; | |
| 11277 | } | |
| 11278 | } | |
| 11279 | } | |
| 11280 | } | |
| 11281 | ||
| 11282 | /* Zap sizes of got sections. */ | |
| 33e44f2e AM |
11283 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
| 11284 | htab->elf.irelplt->size -= htab->got_reli_size; | |
| 927be08e AM |
11285 | htab->got_reli_size = 0; |
| 11286 | ||
| c72f2fb2 | 11287 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11288 | { |
| 11289 | asection *got, *relgot; | |
| 11290 | ||
| 11291 | if (!is_ppc64_elf (ibfd)) | |
| 11292 | continue; | |
| 11293 | ||
| 11294 | got = ppc64_elf_tdata (ibfd)->got; | |
| 11295 | if (got != NULL) | |
| 11296 | { | |
| 11297 | got->rawsize = got->size; | |
| 11298 | got->size = 0; | |
| 11299 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
| 11300 | relgot->rawsize = relgot->size; | |
| 11301 | relgot->size = 0; | |
| 11302 | } | |
| 11303 | } | |
| 11304 | ||
| 11305 | /* Now reallocate the got, local syms first. We don't need to | |
| 11306 | allocate section contents again since we never increase size. */ | |
| c72f2fb2 | 11307 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11308 | { |
| 11309 | struct got_entry **lgot_ents; | |
| 11310 | struct got_entry **end_lgot_ents; | |
| 11311 | struct plt_entry **local_plt; | |
| 11312 | struct plt_entry **end_local_plt; | |
| f961d9dd | 11313 | unsigned char *lgot_masks; |
| 927be08e AM |
11314 | bfd_size_type locsymcount; |
| 11315 | Elf_Internal_Shdr *symtab_hdr; | |
| 19e08130 | 11316 | asection *s; |
| 927be08e AM |
11317 | |
| 11318 | if (!is_ppc64_elf (ibfd)) | |
| 11319 | continue; | |
| 11320 | ||
| 11321 | lgot_ents = elf_local_got_ents (ibfd); | |
| 11322 | if (!lgot_ents) | |
| 11323 | continue; | |
| 11324 | ||
| 11325 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 11326 | locsymcount = symtab_hdr->sh_info; | |
| 11327 | end_lgot_ents = lgot_ents + locsymcount; | |
| 11328 | local_plt = (struct plt_entry **) end_lgot_ents; | |
| 11329 | end_local_plt = local_plt + locsymcount; | |
| f961d9dd | 11330 | lgot_masks = (unsigned char *) end_local_plt; |
| 927be08e | 11331 | s = ppc64_elf_tdata (ibfd)->got; |
| 927be08e AM |
11332 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
| 11333 | { | |
| 11334 | struct got_entry *ent; | |
| 11335 | ||
| 11336 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
| d0fae19d | 11337 | { |
| 19e08130 AM |
11338 | unsigned int ent_size = 8; |
| 11339 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
| 11340 | ||
| d0fae19d AM |
11341 | ent->got.offset = s->size; |
| 11342 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
| d0fae19d | 11343 | { |
| 19e08130 AM |
11344 | ent_size *= 2; |
| 11345 | rel_size *= 2; | |
| 11346 | } | |
| 11347 | s->size += ent_size; | |
| 11348 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
| 11349 | { | |
| 33e44f2e | 11350 | htab->elf.irelplt->size += rel_size; |
| 19e08130 AM |
11351 | htab->got_reli_size += rel_size; |
| 11352 | } | |
| 11353 | else if (info->shared) | |
| 11354 | { | |
| 11355 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 11356 | srel->size += rel_size; | |
| d0fae19d AM |
11357 | } |
| 11358 | } | |
| 927be08e AM |
11359 | } |
| 11360 | } | |
| 11361 | ||
| 11362 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
| 11363 | ||
| c72f2fb2 | 11364 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11365 | { |
| 11366 | struct got_entry *ent; | |
| 11367 | ||
| 11368 | if (!is_ppc64_elf (ibfd)) | |
| 11369 | continue; | |
| 11370 | ||
| 11371 | ent = ppc64_tlsld_got (ibfd); | |
| 11372 | if (!ent->is_indirect | |
| 11373 | && ent->got.offset != (bfd_vma) -1) | |
| 11374 | { | |
| 11375 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
| 11376 | ent->got.offset = s->size; | |
| 11377 | s->size += 16; | |
| 11378 | if (info->shared) | |
| 11379 | { | |
| 11380 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 11381 | srel->size += sizeof (Elf64_External_Rela); | |
| 11382 | } | |
| 11383 | } | |
| 11384 | } | |
| 11385 | ||
| 33e44f2e | 11386 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
| 927be08e | 11387 | if (!done_something) |
| c72f2fb2 | 11388 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11389 | { |
| 11390 | asection *got; | |
| 11391 | ||
| 11392 | if (!is_ppc64_elf (ibfd)) | |
| 11393 | continue; | |
| 11394 | ||
| 11395 | got = ppc64_elf_tdata (ibfd)->got; | |
| 11396 | if (got != NULL) | |
| 11397 | { | |
| 11398 | done_something = got->rawsize != got->size; | |
| 11399 | if (done_something) | |
| 11400 | break; | |
| 11401 | } | |
| 11402 | } | |
| 11403 | ||
| 11404 | if (done_something) | |
| e7d1c40c | 11405 | (*htab->params->layout_sections_again) (); |
| 927be08e AM |
11406 | |
| 11407 | /* Set up for second pass over toc sections to recalculate elf_gp | |
| 11408 | on input sections. */ | |
| 11409 | htab->toc_bfd = NULL; | |
| 11410 | htab->toc_first_sec = NULL; | |
| 11411 | htab->second_toc_pass = TRUE; | |
| 11412 | return done_something; | |
| 11413 | } | |
| 11414 | ||
| 11415 | /* Called after second pass of multitoc partitioning. */ | |
| 11416 | ||
| 11417 | void | |
| 11418 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
| 11419 | { | |
| 11420 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11421 | ||
| 11422 | /* After the second pass, toc_curr tracks the TOC offset used | |
| 11423 | for code sections below in ppc64_elf_next_input_section. */ | |
| 3d6f9012 | 11424 | htab->toc_curr = TOC_BASE_OFF; |
| ad8e1ba5 AM |
11425 | } |
| 11426 | ||
| 9b5ecbd0 AM |
11427 | /* No toc references were found in ISEC. If the code in ISEC makes no |
| 11428 | calls, then there's no need to use toc adjusting stubs when branching | |
| 11429 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
| 4c52953f AM |
11430 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
| 11431 | needed, and 2 if a cyclical call-graph was found but no other reason | |
| 11432 | for a stub was detected. If called from the top level, a return of | |
| 11433 | 2 means the same as a return of 0. */ | |
| 9b5ecbd0 AM |
11434 | |
| 11435 | static int | |
| 4ce794b7 | 11436 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
| 9b5ecbd0 | 11437 | { |
| 9b5ecbd0 | 11438 | int ret; |
| 70cc837d AM |
11439 | |
| 11440 | /* Mark this section as checked. */ | |
| 11441 | isec->call_check_done = 1; | |
| 9b5ecbd0 | 11442 | |
| 772119ce AM |
11443 | /* We know none of our code bearing sections will need toc stubs. */ |
| 11444 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
| 11445 | return 0; | |
| 11446 | ||
| eea6121a | 11447 | if (isec->size == 0) |
| 082c50f8 AM |
11448 | return 0; |
| 11449 | ||
| 4c52953f AM |
11450 | if (isec->output_section == NULL) |
| 11451 | return 0; | |
| 11452 | ||
| 4c52953f | 11453 | ret = 0; |
| 70cc837d | 11454 | if (isec->reloc_count != 0) |
| 9b5ecbd0 | 11455 | { |
| 70cc837d AM |
11456 | Elf_Internal_Rela *relstart, *rel; |
| 11457 | Elf_Internal_Sym *local_syms; | |
| 11458 | struct ppc_link_hash_table *htab; | |
| 2917689a | 11459 | |
| 70cc837d AM |
11460 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
| 11461 | info->keep_memory); | |
| 11462 | if (relstart == NULL) | |
| 11463 | return -1; | |
| 90aecf7a | 11464 | |
| 70cc837d AM |
11465 | /* Look for branches to outside of this section. */ |
| 11466 | local_syms = NULL; | |
| 11467 | htab = ppc_hash_table (info); | |
| 11468 | if (htab == NULL) | |
| 11469 | return -1; | |
| 4c52953f | 11470 | |
| 70cc837d | 11471 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
| 4c52953f | 11472 | { |
| 70cc837d AM |
11473 | enum elf_ppc64_reloc_type r_type; |
| 11474 | unsigned long r_symndx; | |
| 11475 | struct elf_link_hash_entry *h; | |
| 11476 | struct ppc_link_hash_entry *eh; | |
| 11477 | Elf_Internal_Sym *sym; | |
| 11478 | asection *sym_sec; | |
| 11479 | struct _opd_sec_data *opd; | |
| 11480 | bfd_vma sym_value; | |
| 11481 | bfd_vma dest; | |
| 11482 | ||
| 11483 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 11484 | if (r_type != R_PPC64_REL24 | |
| 11485 | && r_type != R_PPC64_REL14 | |
| 11486 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 11487 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 11488 | continue; | |
| 4c52953f | 11489 | |
| 70cc837d AM |
11490 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 11491 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
| 11492 | isec->owner)) | |
| 4c52953f | 11493 | { |
| 70cc837d AM |
11494 | ret = -1; |
| 11495 | break; | |
| 11496 | } | |
| 4c52953f | 11497 | |
| 70cc837d AM |
11498 | /* Calls to dynamic lib functions go through a plt call stub |
| 11499 | that uses r2. */ | |
| 11500 | eh = (struct ppc_link_hash_entry *) h; | |
| 11501 | if (eh != NULL | |
| 11502 | && (eh->elf.plt.plist != NULL | |
| 11503 | || (eh->oh != NULL | |
| 11504 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
| 11505 | { | |
| 11506 | ret = 1; | |
| 11507 | break; | |
| 4c52953f AM |
11508 | } |
| 11509 | ||
| 70cc837d AM |
11510 | if (sym_sec == NULL) |
| 11511 | /* Ignore other undefined symbols. */ | |
| 4c52953f | 11512 | continue; |
| 4c52953f | 11513 | |
| 70cc837d AM |
11514 | /* Assume branches to other sections not included in the |
| 11515 | link need stubs too, to cover -R and absolute syms. */ | |
| 11516 | if (sym_sec->output_section == NULL) | |
| 11517 | { | |
| 11518 | ret = 1; | |
| 11519 | break; | |
| 11520 | } | |
| 4c52953f | 11521 | |
| 70cc837d AM |
11522 | if (h == NULL) |
| 11523 | sym_value = sym->st_value; | |
| 11524 | else | |
| 11525 | { | |
| 11526 | if (h->root.type != bfd_link_hash_defined | |
| 11527 | && h->root.type != bfd_link_hash_defweak) | |
| 11528 | abort (); | |
| 11529 | sym_value = h->root.u.def.value; | |
| 11530 | } | |
| 11531 | sym_value += rel->r_addend; | |
| 4c52953f | 11532 | |
| 70cc837d AM |
11533 | /* If this branch reloc uses an opd sym, find the code section. */ |
| 11534 | opd = get_opd_info (sym_sec); | |
| 11535 | if (opd != NULL) | |
| 11536 | { | |
| 11537 | if (h == NULL && opd->adjust != NULL) | |
| 11538 | { | |
| 11539 | long adjust; | |
| 4c52953f | 11540 | |
| 70cc837d AM |
11541 | adjust = opd->adjust[sym->st_value / 8]; |
| 11542 | if (adjust == -1) | |
| 11543 | /* Assume deleted functions won't ever be called. */ | |
| 11544 | continue; | |
| 11545 | sym_value += adjust; | |
| 11546 | } | |
| 4c52953f | 11547 | |
| aef36ac1 AM |
11548 | dest = opd_entry_value (sym_sec, sym_value, |
| 11549 | &sym_sec, NULL, FALSE); | |
| 70cc837d AM |
11550 | if (dest == (bfd_vma) -1) |
| 11551 | continue; | |
| 11552 | } | |
| 11553 | else | |
| 11554 | dest = (sym_value | |
| 11555 | + sym_sec->output_offset | |
| 11556 | + sym_sec->output_section->vma); | |
| 4c52953f | 11557 | |
| 70cc837d AM |
11558 | /* Ignore branch to self. */ |
| 11559 | if (sym_sec == isec) | |
| 11560 | continue; | |
| 4c52953f | 11561 | |
| 70cc837d AM |
11562 | /* If the called function uses the toc, we need a stub. */ |
| 11563 | if (sym_sec->has_toc_reloc | |
| 11564 | || sym_sec->makes_toc_func_call) | |
| 4c52953f | 11565 | { |
| 70cc837d | 11566 | ret = 1; |
| 4c52953f AM |
11567 | break; |
| 11568 | } | |
| 70cc837d AM |
11569 | |
| 11570 | /* Assume any branch that needs a long branch stub might in fact | |
| 11571 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
| 11572 | else if (dest - (isec->output_offset | |
| 11573 | + isec->output_section->vma | |
| 6911b7dc AM |
11574 | + rel->r_offset) + (1 << 25) |
| 11575 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
| 11576 | ? h->other | |
| 11577 | : sym->st_other)) | |
| 4c52953f | 11578 | { |
| 70cc837d AM |
11579 | ret = 1; |
| 11580 | break; | |
| 11581 | } | |
| 11582 | ||
| 11583 | /* If calling back to a section in the process of being | |
| 11584 | tested, we can't say for sure that no toc adjusting stubs | |
| 11585 | are needed, so don't return zero. */ | |
| 11586 | else if (sym_sec->call_check_in_progress) | |
| 11587 | ret = 2; | |
| 11588 | ||
| 11589 | /* Branches to another section that itself doesn't have any TOC | |
| 11590 | references are OK. Recursively call ourselves to check. */ | |
| 11591 | else if (!sym_sec->call_check_done) | |
| 11592 | { | |
| 11593 | int recur; | |
| 11594 | ||
| 11595 | /* Mark current section as indeterminate, so that other | |
| 11596 | sections that call back to current won't be marked as | |
| 11597 | known. */ | |
| 11598 | isec->call_check_in_progress = 1; | |
| 11599 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
| 11600 | isec->call_check_in_progress = 0; | |
| 11601 | ||
| 4c52953f AM |
11602 | if (recur != 0) |
| 11603 | { | |
| 70cc837d AM |
11604 | ret = recur; |
| 11605 | if (recur != 2) | |
| 11606 | break; | |
| 4c52953f AM |
11607 | } |
| 11608 | } | |
| 4c52953f | 11609 | } |
| 70cc837d AM |
11610 | |
| 11611 | if (local_syms != NULL | |
| 11612 | && (elf_symtab_hdr (isec->owner).contents | |
| 11613 | != (unsigned char *) local_syms)) | |
| 11614 | free (local_syms); | |
| 11615 | if (elf_section_data (isec)->relocs != relstart) | |
| 11616 | free (relstart); | |
| 9b5ecbd0 AM |
11617 | } |
| 11618 | ||
| 70cc837d AM |
11619 | if ((ret & 1) == 0 |
| 11620 | && isec->map_head.s != NULL | |
| 11621 | && (strcmp (isec->output_section->name, ".init") == 0 | |
| 11622 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
| 11623 | { | |
| 11624 | if (isec->map_head.s->has_toc_reloc | |
| 11625 | || isec->map_head.s->makes_toc_func_call) | |
| 11626 | ret = 1; | |
| 11627 | else if (!isec->map_head.s->call_check_done) | |
| 11628 | { | |
| 11629 | int recur; | |
| 11630 | isec->call_check_in_progress = 1; | |
| 11631 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
| 11632 | isec->call_check_in_progress = 0; | |
| 11633 | if (recur != 0) | |
| 11634 | ret = recur; | |
| 11635 | } | |
| 11636 | } | |
| 11637 | ||
| 11638 | if (ret == 1) | |
| 11639 | isec->makes_toc_func_call = 1; | |
| 4c52953f | 11640 | |
| 9b5ecbd0 AM |
11641 | return ret; |
| 11642 | } | |
| 11643 | ||
| 721956f4 AM |
11644 | /* The linker repeatedly calls this function for each input section, |
| 11645 | in the order that input sections are linked into output sections. | |
| 11646 | Build lists of input sections to determine groupings between which | |
| 11647 | we may insert linker stubs. */ | |
| 11648 | ||
| 9b5ecbd0 | 11649 | bfd_boolean |
| 4ce794b7 | 11650 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
| 721956f4 AM |
11651 | { |
| 11652 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11653 | ||
| 4dfe6ac6 NC |
11654 | if (htab == NULL) |
| 11655 | return FALSE; | |
| 11656 | ||
| 734b6cf9 AM |
11657 | if ((isec->output_section->flags & SEC_CODE) != 0 |
| 11658 | && isec->output_section->index <= htab->top_index) | |
| 721956f4 | 11659 | { |
| 734b6cf9 | 11660 | asection **list = htab->input_list + isec->output_section->index; |
| 3d6f9012 | 11661 | /* Steal the link_sec pointer for our list. */ |
| 721956f4 | 11662 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
| 3d6f9012 AM |
11663 | /* This happens to make the list in reverse order, |
| 11664 | which is what we want. */ | |
| 734b6cf9 AM |
11665 | PREV_SEC (isec) = *list; |
| 11666 | *list = isec; | |
| 721956f4 | 11667 | } |
| ad8e1ba5 | 11668 | |
| 4c52953f | 11669 | if (htab->multi_toc_needed) |
| 9b5ecbd0 | 11670 | { |
| 8b974ba3 AM |
11671 | /* Analyse sections that aren't already flagged as needing a |
| 11672 | valid toc pointer. Exclude .fixup for the linux kernel. | |
| 11673 | .fixup contains branches, but only back to the function that | |
| 11674 | hit an exception. */ | |
| 11675 | if (!(isec->has_toc_reloc | |
| 11676 | || (isec->flags & SEC_CODE) == 0 | |
| 11677 | || strcmp (isec->name, ".fixup") == 0 | |
| 11678 | || isec->call_check_done)) | |
| 11679 | { | |
| 11680 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
| 6683a28d | 11681 | return FALSE; |
| 8b974ba3 AM |
11682 | } |
| 11683 | /* Make all sections use the TOC assigned for this object file. | |
| 11684 | This will be wrong for pasted sections; We fix that in | |
| 11685 | check_pasted_section(). */ | |
| 11686 | if (elf_gp (isec->owner) != 0) | |
| 11687 | htab->toc_curr = elf_gp (isec->owner); | |
| 11688 | } | |
| 11689 | ||
| ad8e1ba5 | 11690 | htab->stub_group[isec->id].toc_off = htab->toc_curr; |
| 9b5ecbd0 | 11691 | return TRUE; |
| 721956f4 AM |
11692 | } |
| 11693 | ||
| 70cc837d AM |
11694 | /* Check that all .init and .fini sections use the same toc, if they |
| 11695 | have toc relocs. */ | |
| 11696 | ||
| 11697 | static bfd_boolean | |
| 11698 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
| 11699 | { | |
| 11700 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
| 11701 | ||
| 11702 | if (o != NULL) | |
| 11703 | { | |
| 11704 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11705 | bfd_vma toc_off = 0; | |
| 11706 | asection *i; | |
| 11707 | ||
| 11708 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 11709 | if (i->has_toc_reloc) | |
| 11710 | { | |
| 11711 | if (toc_off == 0) | |
| 11712 | toc_off = htab->stub_group[i->id].toc_off; | |
| 11713 | else if (toc_off != htab->stub_group[i->id].toc_off) | |
| 11714 | return FALSE; | |
| 11715 | } | |
| 6683a28d AM |
11716 | |
| 11717 | if (toc_off == 0) | |
| 11718 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 11719 | if (i->makes_toc_func_call) | |
| 11720 | { | |
| 11721 | toc_off = htab->stub_group[i->id].toc_off; | |
| 11722 | break; | |
| 11723 | } | |
| 11724 | ||
| 70cc837d AM |
11725 | /* Make sure the whole pasted function uses the same toc offset. */ |
| 11726 | if (toc_off != 0) | |
| 11727 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 11728 | htab->stub_group[i->id].toc_off = toc_off; | |
| 11729 | } | |
| 11730 | return TRUE; | |
| 11731 | } | |
| 11732 | ||
| 11733 | bfd_boolean | |
| 11734 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
| 11735 | { | |
| 11736 | return (check_pasted_section (info, ".init") | |
| 11737 | & check_pasted_section (info, ".fini")); | |
| 11738 | } | |
| 11739 | ||
| 721956f4 AM |
11740 | /* See whether we can group stub sections together. Grouping stub |
| 11741 | sections may result in fewer stubs. More importantly, we need to | |
| 11742 | put all .init* and .fini* stubs at the beginning of the .init or | |
| 11743 | .fini output sections respectively, because glibc splits the | |
| 11744 | _init and _fini functions into multiple parts. Putting a stub in | |
| 11745 | the middle of a function is not a good idea. */ | |
| 11746 | ||
| 11747 | static void | |
| 4ce794b7 AM |
11748 | group_sections (struct ppc_link_hash_table *htab, |
| 11749 | bfd_size_type stub_group_size, | |
| 11750 | bfd_boolean stubs_always_before_branch) | |
| 721956f4 | 11751 | { |
| 7c8fe5c4 AM |
11752 | asection **list; |
| 11753 | bfd_size_type stub14_group_size; | |
| 11754 | bfd_boolean suppress_size_errors; | |
| 11755 | ||
| 11756 | suppress_size_errors = FALSE; | |
| 11757 | stub14_group_size = stub_group_size; | |
| 11758 | if (stub_group_size == 1) | |
| 11759 | { | |
| 11760 | /* Default values. */ | |
| 11761 | if (stubs_always_before_branch) | |
| 11762 | { | |
| 11763 | stub_group_size = 0x1e00000; | |
| 11764 | stub14_group_size = 0x7800; | |
| 11765 | } | |
| 11766 | else | |
| 11767 | { | |
| 11768 | stub_group_size = 0x1c00000; | |
| 11769 | stub14_group_size = 0x7000; | |
| 11770 | } | |
| 11771 | suppress_size_errors = TRUE; | |
| 11772 | } | |
| 11773 | ||
| 11774 | list = htab->input_list + htab->top_index; | |
| 734b6cf9 | 11775 | do |
| 721956f4 | 11776 | { |
| 734b6cf9 AM |
11777 | asection *tail = *list; |
| 11778 | while (tail != NULL) | |
| 721956f4 | 11779 | { |
| 734b6cf9 AM |
11780 | asection *curr; |
| 11781 | asection *prev; | |
| 11782 | bfd_size_type total; | |
| 11783 | bfd_boolean big_sec; | |
| 11784 | bfd_vma curr_toc; | |
| 11785 | ||
| 11786 | curr = tail; | |
| eea6121a | 11787 | total = tail->size; |
| 6bee8834 AM |
11788 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
| 11789 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
| 7c8fe5c4 AM |
11790 | ? stub14_group_size : stub_group_size); |
| 11791 | if (big_sec && !suppress_size_errors) | |
| 5c3dead3 AM |
11792 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
| 11793 | tail->owner, tail); | |
| 734b6cf9 AM |
11794 | curr_toc = htab->stub_group[tail->id].toc_off; |
| 11795 | ||
| 11796 | while ((prev = PREV_SEC (curr)) != NULL | |
| 11797 | && ((total += curr->output_offset - prev->output_offset) | |
| 6bee8834 AM |
11798 | < (ppc64_elf_section_data (prev) != NULL |
| 11799 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
| 7c8fe5c4 | 11800 | ? stub14_group_size : stub_group_size)) |
| ad8e1ba5 | 11801 | && htab->stub_group[prev->id].toc_off == curr_toc) |
| 734b6cf9 AM |
11802 | curr = prev; |
| 11803 | ||
| 11804 | /* OK, the size from the start of CURR to the end is less | |
| 11805 | than stub_group_size and thus can be handled by one stub | |
| 11806 | section. (or the tail section is itself larger than | |
| 11807 | stub_group_size, in which case we may be toast.) We | |
| 11808 | should really be keeping track of the total size of stubs | |
| 11809 | added here, as stubs contribute to the final output | |
| 11810 | section size. That's a little tricky, and this way will | |
| 11811 | only break if stubs added make the total size more than | |
| 11812 | 2^25, ie. for the default stub_group_size, if stubs total | |
| 11813 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
| 11814 | do | |
| 721956f4 AM |
11815 | { |
| 11816 | prev = PREV_SEC (tail); | |
| 734b6cf9 | 11817 | /* Set up this stub group. */ |
| 721956f4 AM |
11818 | htab->stub_group[tail->id].link_sec = curr; |
| 11819 | } | |
| 734b6cf9 AM |
11820 | while (tail != curr && (tail = prev) != NULL); |
| 11821 | ||
| 11822 | /* But wait, there's more! Input sections up to stub_group_size | |
| 11823 | bytes before the stub section can be handled by it too. | |
| 11824 | Don't do this if we have a really large section after the | |
| 11825 | stubs, as adding more stubs increases the chance that | |
| 11826 | branches may not reach into the stub section. */ | |
| 11827 | if (!stubs_always_before_branch && !big_sec) | |
| 11828 | { | |
| 11829 | total = 0; | |
| 11830 | while (prev != NULL | |
| 11831 | && ((total += tail->output_offset - prev->output_offset) | |
| 6bee8834 AM |
11832 | < (ppc64_elf_section_data (prev) != NULL |
| 11833 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
| 7c8fe5c4 | 11834 | ? stub14_group_size : stub_group_size)) |
| 734b6cf9 AM |
11835 | && htab->stub_group[prev->id].toc_off == curr_toc) |
| 11836 | { | |
| 11837 | tail = prev; | |
| 11838 | prev = PREV_SEC (tail); | |
| 11839 | htab->stub_group[tail->id].link_sec = curr; | |
| 11840 | } | |
| 11841 | } | |
| 11842 | tail = prev; | |
| 721956f4 AM |
11843 | } |
| 11844 | } | |
| 734b6cf9 AM |
11845 | while (list-- != htab->input_list); |
| 11846 | free (htab->input_list); | |
| 721956f4 AM |
11847 | #undef PREV_SEC |
| 11848 | } | |
| 11849 | ||
| 58d180e8 AM |
11850 | static const unsigned char glink_eh_frame_cie[] = |
| 11851 | { | |
| 11852 | 0, 0, 0, 16, /* length. */ | |
| 11853 | 0, 0, 0, 0, /* id. */ | |
| 11854 | 1, /* CIE version. */ | |
| 11855 | 'z', 'R', 0, /* Augmentation string. */ | |
| 11856 | 4, /* Code alignment. */ | |
| 11857 | 0x78, /* Data alignment. */ | |
| 11858 | 65, /* RA reg. */ | |
| 11859 | 1, /* Augmentation size. */ | |
| 11860 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
| 11861 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
| 11862 | }; | |
| 11863 | ||
| d969d15f AM |
11864 | /* Stripping output sections is normally done before dynamic section |
| 11865 | symbols have been allocated. This function is called later, and | |
| 11866 | handles cases like htab->brlt which is mapped to its own output | |
| 11867 | section. */ | |
| 11868 | ||
| 11869 | static void | |
| 11870 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
| 11871 | { | |
| 11872 | if (isec->size == 0 | |
| 11873 | && isec->output_section->size == 0 | |
| 53d8967a | 11874 | && !(isec->output_section->flags & SEC_KEEP) |
| d969d15f AM |
11875 | && !bfd_section_removed_from_list (info->output_bfd, |
| 11876 | isec->output_section) | |
| 11877 | && elf_section_data (isec->output_section)->dynindx == 0) | |
| 11878 | { | |
| 11879 | isec->output_section->flags |= SEC_EXCLUDE; | |
| 11880 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
| 11881 | info->output_bfd->section_count--; | |
| 11882 | } | |
| 11883 | } | |
| 11884 | ||
| 721956f4 AM |
11885 | /* Determine and set the size of the stub section for a final link. |
| 11886 | ||
| 11887 | The basic idea here is to examine all the relocations looking for | |
| 11888 | PC-relative calls to a target that is unreachable with a "bl" | |
| 11889 | instruction. */ | |
| 11890 | ||
| b34976b6 | 11891 | bfd_boolean |
| e7d1c40c | 11892 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
| 721956f4 AM |
11893 | { |
| 11894 | bfd_size_type stub_group_size; | |
| b34976b6 | 11895 | bfd_boolean stubs_always_before_branch; |
| 721956f4 AM |
11896 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 11897 | ||
| 4dfe6ac6 NC |
11898 | if (htab == NULL) |
| 11899 | return FALSE; | |
| 11900 | ||
| e7d1c40c AM |
11901 | if (htab->params->plt_thread_safe == -1 && !info->executable) |
| 11902 | htab->params->plt_thread_safe = 1; | |
| b9e5796b | 11903 | if (!htab->opd_abi) |
| e7d1c40c AM |
11904 | htab->params->plt_thread_safe = 0; |
| 11905 | else if (htab->params->plt_thread_safe == -1) | |
| 794e51c0 | 11906 | { |
| e2458743 | 11907 | static const char *const thread_starter[] = |
| 794e51c0 AM |
11908 | { |
| 11909 | "pthread_create", | |
| 11910 | /* libstdc++ */ | |
| 11911 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
| 11912 | /* librt */ | |
| 11913 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
| 11914 | "mq_notify", "create_timer", | |
| 11915 | /* libanl */ | |
| 11916 | "getaddrinfo_a", | |
| 11917 | /* libgomp */ | |
| 11918 | "GOMP_parallel_start", | |
| 11919 | "GOMP_parallel_loop_static_start", | |
| 11920 | "GOMP_parallel_loop_dynamic_start", | |
| 11921 | "GOMP_parallel_loop_guided_start", | |
| 11922 | "GOMP_parallel_loop_runtime_start", | |
| 68ffbac6 | 11923 | "GOMP_parallel_sections_start", |
| 794e51c0 AM |
11924 | }; |
| 11925 | unsigned i; | |
| 11926 | ||
| 11927 | for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++) | |
| 11928 | { | |
| 11929 | struct elf_link_hash_entry *h; | |
| 11930 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
| 11931 | FALSE, FALSE, TRUE); | |
| e7d1c40c AM |
11932 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
| 11933 | if (htab->params->plt_thread_safe) | |
| 794e51c0 AM |
11934 | break; |
| 11935 | } | |
| 11936 | } | |
| e7d1c40c AM |
11937 | stubs_always_before_branch = htab->params->group_size < 0; |
| 11938 | if (htab->params->group_size < 0) | |
| 11939 | stub_group_size = -htab->params->group_size; | |
| 721956f4 | 11940 | else |
| e7d1c40c | 11941 | stub_group_size = htab->params->group_size; |
| 721956f4 AM |
11942 | |
| 11943 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
| 11944 | ||
| 721956f4 AM |
11945 | while (1) |
| 11946 | { | |
| 11947 | bfd *input_bfd; | |
| 11948 | unsigned int bfd_indx; | |
| 11949 | asection *stub_sec; | |
| 721956f4 AM |
11950 | |
| 11951 | htab->stub_iteration += 1; | |
| 721956f4 AM |
11952 | |
| 11953 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
| 11954 | input_bfd != NULL; | |
| c72f2fb2 | 11955 | input_bfd = input_bfd->link.next, bfd_indx++) |
| 721956f4 AM |
11956 | { |
| 11957 | Elf_Internal_Shdr *symtab_hdr; | |
| 11958 | asection *section; | |
| 6cdc0ccc | 11959 | Elf_Internal_Sym *local_syms = NULL; |
| 721956f4 | 11960 | |
| 0c8d6e5c | 11961 | if (!is_ppc64_elf (input_bfd)) |
| 67f93c31 AM |
11962 | continue; |
| 11963 | ||
| 721956f4 | 11964 | /* We'll need the symbol table in a second. */ |
| 0ffa91dd | 11965 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 721956f4 AM |
11966 | if (symtab_hdr->sh_info == 0) |
| 11967 | continue; | |
| 11968 | ||
| 721956f4 AM |
11969 | /* Walk over each section attached to the input bfd. */ |
| 11970 | for (section = input_bfd->sections; | |
| 11971 | section != NULL; | |
| 11972 | section = section->next) | |
| 11973 | { | |
| 721956f4 | 11974 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
| 721956f4 AM |
11975 | |
| 11976 | /* If there aren't any relocs, then there's nothing more | |
| 11977 | to do. */ | |
| 11978 | if ((section->flags & SEC_RELOC) == 0 | |
| 12c0f757 AM |
11979 | || (section->flags & SEC_ALLOC) == 0 |
| 11980 | || (section->flags & SEC_LOAD) == 0 | |
| 11981 | || (section->flags & SEC_CODE) == 0 | |
| 721956f4 AM |
11982 | || section->reloc_count == 0) |
| 11983 | continue; | |
| 11984 | ||
| 11985 | /* If this section is a link-once section that will be | |
| 11986 | discarded, then don't create any stubs. */ | |
| 11987 | if (section->output_section == NULL | |
| 927be08e | 11988 | || section->output_section->owner != info->output_bfd) |
| 721956f4 AM |
11989 | continue; |
| 11990 | ||
| 1e2f5b6e AM |
11991 | /* Get the relocs. */ |
| 11992 | internal_relocs | |
| 4ce794b7 | 11993 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
| 45d6a902 | 11994 | info->keep_memory); |
| 721956f4 | 11995 | if (internal_relocs == NULL) |
| 1e2f5b6e | 11996 | goto error_ret_free_local; |
| 721956f4 AM |
11997 | |
| 11998 | /* Now examine each relocation. */ | |
| 11999 | irela = internal_relocs; | |
| 12000 | irelaend = irela + section->reloc_count; | |
| 12001 | for (; irela < irelaend; irela++) | |
| 12002 | { | |
| 4ce794b7 AM |
12003 | enum elf_ppc64_reloc_type r_type; |
| 12004 | unsigned int r_indx; | |
| 721956f4 AM |
12005 | enum ppc_stub_type stub_type; |
| 12006 | struct ppc_stub_hash_entry *stub_entry; | |
| 8387904d | 12007 | asection *sym_sec, *code_sec; |
| e054468f | 12008 | bfd_vma sym_value, code_value; |
| 721956f4 | 12009 | bfd_vma destination; |
| 6911b7dc | 12010 | unsigned long local_off; |
| 8843416a | 12011 | bfd_boolean ok_dest; |
| 721956f4 | 12012 | struct ppc_link_hash_entry *hash; |
| 8387904d | 12013 | struct ppc_link_hash_entry *fdh; |
| 411e1bfb AM |
12014 | struct elf_link_hash_entry *h; |
| 12015 | Elf_Internal_Sym *sym; | |
| 721956f4 AM |
12016 | char *stub_name; |
| 12017 | const asection *id_sec; | |
| 74f0fb50 | 12018 | struct _opd_sec_data *opd; |
| e054468f | 12019 | struct plt_entry *plt_ent; |
| 721956f4 AM |
12020 | |
| 12021 | r_type = ELF64_R_TYPE (irela->r_info); | |
| 12022 | r_indx = ELF64_R_SYM (irela->r_info); | |
| 12023 | ||
| 4ce794b7 | 12024 | if (r_type >= R_PPC64_max) |
| 721956f4 AM |
12025 | { |
| 12026 | bfd_set_error (bfd_error_bad_value); | |
| 6cdc0ccc | 12027 | goto error_ret_free_internal; |
| 721956f4 AM |
12028 | } |
| 12029 | ||
| 12030 | /* Only look for stubs on branch instructions. */ | |
| 4ce794b7 AM |
12031 | if (r_type != R_PPC64_REL24 |
| 12032 | && r_type != R_PPC64_REL14 | |
| 12033 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 12034 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 721956f4 AM |
12035 | continue; |
| 12036 | ||
| 12037 | /* Now determine the call target, its name, value, | |
| 12038 | section. */ | |
| 411e1bfb AM |
12039 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 12040 | r_indx, input_bfd)) | |
| 12041 | goto error_ret_free_internal; | |
| 12042 | hash = (struct ppc_link_hash_entry *) h; | |
| 12043 | ||
| 8843416a | 12044 | ok_dest = FALSE; |
| 8387904d | 12045 | fdh = NULL; |
| 7fe2b9a6 | 12046 | sym_value = 0; |
| 411e1bfb | 12047 | if (hash == NULL) |
| 721956f4 | 12048 | { |
| 411e1bfb | 12049 | sym_value = sym->st_value; |
| 8843416a | 12050 | ok_dest = TRUE; |
| 721956f4 | 12051 | } |
| 7fe2b9a6 AM |
12052 | else if (hash->elf.root.type == bfd_link_hash_defined |
| 12053 | || hash->elf.root.type == bfd_link_hash_defweak) | |
| 12054 | { | |
| 12055 | sym_value = hash->elf.root.u.def.value; | |
| 12056 | if (sym_sec->output_section != NULL) | |
| 12057 | ok_dest = TRUE; | |
| 12058 | } | |
| 12059 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
| 12060 | || hash->elf.root.type == bfd_link_hash_undefined) | |
| 721956f4 | 12061 | { |
| 99877b66 | 12062 | /* Recognise an old ABI func code entry sym, and |
| 7fe2b9a6 AM |
12063 | use the func descriptor sym instead if it is |
| 12064 | defined. */ | |
| ceb1f1ef | 12065 | if (hash->elf.root.root.string[0] == '.' |
| b31867b6 | 12066 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
| 8387904d | 12067 | { |
| 8387904d AM |
12068 | if (fdh->elf.root.type == bfd_link_hash_defined |
| 12069 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 12070 | { | |
| 12071 | sym_sec = fdh->elf.root.u.def.section; | |
| 12072 | sym_value = fdh->elf.root.u.def.value; | |
| 12073 | if (sym_sec->output_section != NULL) | |
| 12074 | ok_dest = TRUE; | |
| 12075 | } | |
| 99877b66 AM |
12076 | else |
| 12077 | fdh = NULL; | |
| 8387904d | 12078 | } |
| 7fe2b9a6 AM |
12079 | } |
| 12080 | else | |
| 12081 | { | |
| 12082 | bfd_set_error (bfd_error_bad_value); | |
| 12083 | goto error_ret_free_internal; | |
| 721956f4 AM |
12084 | } |
| 12085 | ||
| 8843416a | 12086 | destination = 0; |
| 6911b7dc | 12087 | local_off = 0; |
| 8843416a AM |
12088 | if (ok_dest) |
| 12089 | { | |
| 12090 | sym_value += irela->r_addend; | |
| 12091 | destination = (sym_value | |
| 12092 | + sym_sec->output_offset | |
| 12093 | + sym_sec->output_section->vma); | |
| 6911b7dc AM |
12094 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
| 12095 | ? hash->elf.other | |
| 12096 | : sym->st_other); | |
| 8843416a AM |
12097 | } |
| 12098 | ||
| 8387904d | 12099 | code_sec = sym_sec; |
| e054468f | 12100 | code_value = sym_value; |
| 74f0fb50 AM |
12101 | opd = get_opd_info (sym_sec); |
| 12102 | if (opd != NULL) | |
| 8387904d AM |
12103 | { |
| 12104 | bfd_vma dest; | |
| 12105 | ||
| 74f0fb50 | 12106 | if (hash == NULL && opd->adjust != NULL) |
| 8387904d | 12107 | { |
| 74f0fb50 | 12108 | long adjust = opd->adjust[sym_value / 8]; |
| 8387904d AM |
12109 | if (adjust == -1) |
| 12110 | continue; | |
| e054468f | 12111 | code_value += adjust; |
| 8387904d AM |
12112 | sym_value += adjust; |
| 12113 | } | |
| 12114 | dest = opd_entry_value (sym_sec, sym_value, | |
| aef36ac1 | 12115 | &code_sec, &code_value, FALSE); |
| 8387904d AM |
12116 | if (dest != (bfd_vma) -1) |
| 12117 | { | |
| 12118 | destination = dest; | |
| 12119 | if (fdh != NULL) | |
| 12120 | { | |
| 12121 | /* Fixup old ABI sym to point at code | |
| 12122 | entry. */ | |
| 99877b66 | 12123 | hash->elf.root.type = bfd_link_hash_defweak; |
| 8387904d | 12124 | hash->elf.root.u.def.section = code_sec; |
| e054468f | 12125 | hash->elf.root.u.def.value = code_value; |
| 8387904d AM |
12126 | } |
| 12127 | } | |
| 12128 | } | |
| 12129 | ||
| 721956f4 | 12130 | /* Determine what (if any) linker stub is needed. */ |
| e054468f | 12131 | plt_ent = NULL; |
| 721956f4 | 12132 | stub_type = ppc_type_of_stub (section, irela, &hash, |
| 6911b7dc AM |
12133 | &plt_ent, destination, |
| 12134 | local_off); | |
| ad8e1ba5 AM |
12135 | |
| 12136 | if (stub_type != ppc_stub_plt_call) | |
| 12137 | { | |
| 12138 | /* Check whether we need a TOC adjusting stub. | |
| 12139 | Since the linker pastes together pieces from | |
| 12140 | different object files when creating the | |
| 12141 | _init and _fini functions, it may be that a | |
| 12142 | call to what looks like a local sym is in | |
| 12143 | fact a call needing a TOC adjustment. */ | |
| 8387904d AM |
12144 | if (code_sec != NULL |
| 12145 | && code_sec->output_section != NULL | |
| 12146 | && (htab->stub_group[code_sec->id].toc_off | |
| 9b5ecbd0 | 12147 | != htab->stub_group[section->id].toc_off) |
| 4c52953f AM |
12148 | && (code_sec->has_toc_reloc |
| 12149 | || code_sec->makes_toc_func_call)) | |
| ad8e1ba5 AM |
12150 | stub_type = ppc_stub_long_branch_r2off; |
| 12151 | } | |
| 12152 | ||
| 721956f4 AM |
12153 | if (stub_type == ppc_stub_none) |
| 12154 | continue; | |
| 12155 | ||
| 411e1bfb AM |
12156 | /* __tls_get_addr calls might be eliminated. */ |
| 12157 | if (stub_type != ppc_stub_plt_call | |
| 12158 | && hash != NULL | |
| 8387904d AM |
12159 | && (hash == htab->tls_get_addr |
| 12160 | || hash == htab->tls_get_addr_fd) | |
| 411e1bfb AM |
12161 | && section->has_tls_reloc |
| 12162 | && irela != internal_relocs) | |
| 12163 | { | |
| 12164 | /* Get tls info. */ | |
| f961d9dd | 12165 | unsigned char *tls_mask; |
| 411e1bfb | 12166 | |
| 3a71aa26 | 12167 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
| 411e1bfb AM |
12168 | irela - 1, input_bfd)) |
| 12169 | goto error_ret_free_internal; | |
| e7b938ca | 12170 | if (*tls_mask != 0) |
| 411e1bfb AM |
12171 | continue; |
| 12172 | } | |
| 12173 | ||
| 3b421ab3 AM |
12174 | if (stub_type == ppc_stub_plt_call |
| 12175 | && irela + 1 < irelaend | |
| 12176 | && irela[1].r_offset == irela->r_offset + 4 | |
| 794e51c0 AM |
12177 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
| 12178 | { | |
| 12179 | if (!tocsave_find (htab, INSERT, | |
| 12180 | &local_syms, irela + 1, input_bfd)) | |
| 12181 | goto error_ret_free_internal; | |
| 12182 | } | |
| 12183 | else if (stub_type == ppc_stub_plt_call) | |
| 12184 | stub_type = ppc_stub_plt_call_r2save; | |
| 3b421ab3 | 12185 | |
| 721956f4 AM |
12186 | /* Support for grouping stub sections. */ |
| 12187 | id_sec = htab->stub_group[section->id].link_sec; | |
| 12188 | ||
| 12189 | /* Get the name of this stub. */ | |
| 12190 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
| 12191 | if (!stub_name) | |
| 12192 | goto error_ret_free_internal; | |
| 12193 | ||
| 12194 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 12195 | stub_name, FALSE, FALSE); |
| 721956f4 AM |
12196 | if (stub_entry != NULL) |
| 12197 | { | |
| 12198 | /* The proper stub has already been created. */ | |
| 12199 | free (stub_name); | |
| 794e51c0 AM |
12200 | if (stub_type == ppc_stub_plt_call_r2save) |
| 12201 | stub_entry->stub_type = stub_type; | |
| 721956f4 AM |
12202 | continue; |
| 12203 | } | |
| 12204 | ||
| 25f53a85 | 12205 | stub_entry = ppc_add_stub (stub_name, section, info); |
| 721956f4 AM |
12206 | if (stub_entry == NULL) |
| 12207 | { | |
| 12208 | free (stub_name); | |
| 6cdc0ccc AM |
12209 | error_ret_free_internal: |
| 12210 | if (elf_section_data (section)->relocs == NULL) | |
| 12211 | free (internal_relocs); | |
| 12212 | error_ret_free_local: | |
| 12213 | if (local_syms != NULL | |
| 12214 | && (symtab_hdr->contents | |
| 12215 | != (unsigned char *) local_syms)) | |
| 12216 | free (local_syms); | |
| b34976b6 | 12217 | return FALSE; |
| 721956f4 AM |
12218 | } |
| 12219 | ||
| ad8e1ba5 | 12220 | stub_entry->stub_type = stub_type; |
| 794e51c0 AM |
12221 | if (stub_type != ppc_stub_plt_call |
| 12222 | && stub_type != ppc_stub_plt_call_r2save) | |
| e054468f AM |
12223 | { |
| 12224 | stub_entry->target_value = code_value; | |
| 12225 | stub_entry->target_section = code_sec; | |
| 12226 | } | |
| 12227 | else | |
| 12228 | { | |
| 12229 | stub_entry->target_value = sym_value; | |
| 12230 | stub_entry->target_section = sym_sec; | |
| 12231 | } | |
| 721956f4 | 12232 | stub_entry->h = hash; |
| e054468f | 12233 | stub_entry->plt_ent = plt_ent; |
| 6911b7dc | 12234 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
| ee75fd95 AM |
12235 | |
| 12236 | if (stub_entry->h != NULL) | |
| 12237 | htab->stub_globals += 1; | |
| 721956f4 AM |
12238 | } |
| 12239 | ||
| 12240 | /* We're done with the internal relocs, free them. */ | |
| 6cdc0ccc | 12241 | if (elf_section_data (section)->relocs != internal_relocs) |
| 1e2f5b6e | 12242 | free (internal_relocs); |
| 721956f4 | 12243 | } |
| 6cdc0ccc AM |
12244 | |
| 12245 | if (local_syms != NULL | |
| 12246 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 12247 | { | |
| 12248 | if (!info->keep_memory) | |
| 12249 | free (local_syms); | |
| 12250 | else | |
| 12251 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 12252 | } | |
| 721956f4 AM |
12253 | } |
| 12254 | ||
| 5c3dead3 | 12255 | /* We may have added some stubs. Find out the new size of the |
| 721956f4 | 12256 | stub sections. */ |
| e7d1c40c | 12257 | for (stub_sec = htab->params->stub_bfd->sections; |
| 721956f4 AM |
12258 | stub_sec != NULL; |
| 12259 | stub_sec = stub_sec->next) | |
| e717da7e | 12260 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| ee75fd95 | 12261 | { |
| 5c3dead3 | 12262 | stub_sec->rawsize = stub_sec->size; |
| ee75fd95 AM |
12263 | stub_sec->size = 0; |
| 12264 | stub_sec->reloc_count = 0; | |
| 84f5d08e | 12265 | stub_sec->flags &= ~SEC_RELOC; |
| ee75fd95 | 12266 | } |
| eea6121a AM |
12267 | |
| 12268 | htab->brlt->size = 0; | |
| 84f5d08e AM |
12269 | htab->brlt->reloc_count = 0; |
| 12270 | htab->brlt->flags &= ~SEC_RELOC; | |
| ee75fd95 | 12271 | if (htab->relbrlt != NULL) |
| eea6121a | 12272 | htab->relbrlt->size = 0; |
| 721956f4 | 12273 | |
| 63bc6f6c | 12274 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
| 721956f4 | 12275 | |
| 176a0d42 AM |
12276 | if (info->emitrelocations |
| 12277 | && htab->glink != NULL && htab->glink->size != 0) | |
| 12278 | { | |
| 12279 | htab->glink->reloc_count = 1; | |
| 12280 | htab->glink->flags |= SEC_RELOC; | |
| 12281 | } | |
| 12282 | ||
| 58d180e8 AM |
12283 | if (htab->glink_eh_frame != NULL |
| 12284 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
| 9a2a56cc | 12285 | && htab->glink_eh_frame->output_section->size != 0) |
| 58d180e8 | 12286 | { |
| 4bbe044a | 12287 | size_t size = 0, align; |
| 58d180e8 | 12288 | |
| e7d1c40c | 12289 | for (stub_sec = htab->params->stub_bfd->sections; |
| 58d180e8 AM |
12290 | stub_sec != NULL; |
| 12291 | stub_sec = stub_sec->next) | |
| 12292 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 12293 | size += 20; | |
| 12294 | if (htab->glink != NULL && htab->glink->size != 0) | |
| 12295 | size += 24; | |
| 12296 | if (size != 0) | |
| 12297 | size += sizeof (glink_eh_frame_cie); | |
| 4bbe044a AM |
12298 | align = 1; |
| 12299 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
| 12300 | align -= 1; | |
| 12301 | size = (size + align) & ~align; | |
| 58d180e8 AM |
12302 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
| 12303 | htab->glink_eh_frame->size = size; | |
| 12304 | } | |
| 12305 | ||
| e7d1c40c AM |
12306 | if (htab->params->plt_stub_align != 0) |
| 12307 | for (stub_sec = htab->params->stub_bfd->sections; | |
| 794e51c0 AM |
12308 | stub_sec != NULL; |
| 12309 | stub_sec = stub_sec->next) | |
| 12310 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| e7d1c40c AM |
12311 | stub_sec->size = ((stub_sec->size |
| 12312 | + (1 << htab->params->plt_stub_align) - 1) | |
| 12313 | & (-1 << htab->params->plt_stub_align)); | |
| 794e51c0 | 12314 | |
| e7d1c40c | 12315 | for (stub_sec = htab->params->stub_bfd->sections; |
| 5c3dead3 AM |
12316 | stub_sec != NULL; |
| 12317 | stub_sec = stub_sec->next) | |
| 12318 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
| 12319 | && stub_sec->rawsize != stub_sec->size) | |
| 12320 | break; | |
| 12321 | ||
| 12322 | /* Exit from this loop when no stubs have been added, and no stubs | |
| 12323 | have changed size. */ | |
| 58d180e8 AM |
12324 | if (stub_sec == NULL |
| 12325 | && (htab->glink_eh_frame == NULL | |
| 12326 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
| 5c3dead3 AM |
12327 | break; |
| 12328 | ||
| 721956f4 | 12329 | /* Ask the linker to do its stuff. */ |
| e7d1c40c | 12330 | (*htab->params->layout_sections_again) (); |
| 721956f4 AM |
12331 | } |
| 12332 | ||
| d969d15f AM |
12333 | maybe_strip_output (info, htab->brlt); |
| 12334 | if (htab->glink_eh_frame != NULL) | |
| 12335 | maybe_strip_output (info, htab->glink_eh_frame); | |
| 721956f4 | 12336 | |
| b34976b6 | 12337 | return TRUE; |
| 721956f4 AM |
12338 | } |
| 12339 | ||
| 12340 | /* Called after we have determined section placement. If sections | |
| 805fc799 | 12341 | move, we'll be called again. Provide a value for TOCstart. */ |
| 721956f4 | 12342 | |
| 805fc799 | 12343 | bfd_vma |
| 1c865ab2 | 12344 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
| 721956f4 | 12345 | { |
| 805fc799 AM |
12346 | asection *s; |
| 12347 | bfd_vma TOCstart; | |
| 721956f4 | 12348 | |
| 805fc799 AM |
12349 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
| 12350 | order. The TOC starts where the first of these sections starts. */ | |
| 12351 | s = bfd_get_section_by_name (obfd, ".got"); | |
| e054468f | 12352 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12353 | s = bfd_get_section_by_name (obfd, ".toc"); |
| e054468f | 12354 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12355 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
| e054468f | 12356 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12357 | s = bfd_get_section_by_name (obfd, ".plt"); |
| e054468f | 12358 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 AM |
12359 | { |
| 12360 | /* This may happen for | |
| 12361 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
| 12362 | .toc directive | |
| 12363 | o bad linker script | |
| 12364 | o --gc-sections and empty TOC sections | |
| 12365 | ||
| 12366 | FIXME: Warn user? */ | |
| 12367 | ||
| 12368 | /* Look for a likely section. We probably won't even be | |
| 12369 | using TOCstart. */ | |
| 12370 | for (s = obfd->sections; s != NULL; s = s->next) | |
| e054468f AM |
12371 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
| 12372 | | SEC_EXCLUDE)) | |
| 805fc799 AM |
12373 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
| 12374 | break; | |
| 721956f4 | 12375 | if (s == NULL) |
| 805fc799 | 12376 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f | 12377 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
| 805fc799 AM |
12378 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
| 12379 | break; | |
| 721956f4 | 12380 | if (s == NULL) |
| 805fc799 | 12381 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f AM |
12382 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
| 12383 | == SEC_ALLOC) | |
| 805fc799 | 12384 | break; |
| 721956f4 | 12385 | if (s == NULL) |
| 805fc799 | 12386 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f | 12387 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
| 805fc799 AM |
12388 | break; |
| 12389 | } | |
| 721956f4 | 12390 | |
| 805fc799 AM |
12391 | TOCstart = 0; |
| 12392 | if (s != NULL) | |
| 12393 | TOCstart = s->output_section->vma + s->output_offset; | |
| 721956f4 | 12394 | |
| 1c865ab2 AM |
12395 | _bfd_set_gp_value (obfd, TOCstart); |
| 12396 | ||
| 12397 | if (info != NULL && s != NULL && is_ppc64_elf (obfd)) | |
| 12398 | { | |
| 12399 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 12400 | ||
| 12401 | if (htab != NULL | |
| 12402 | && htab->elf.hgot != NULL) | |
| 12403 | { | |
| 1c865ab2 AM |
12404 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF; |
| 12405 | htab->elf.hgot->root.u.def.section = s; | |
| 12406 | } | |
| 12407 | } | |
| 805fc799 | 12408 | return TOCstart; |
| 721956f4 AM |
12409 | } |
| 12410 | ||
| a345bc8d AM |
12411 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
| 12412 | write out any global entry stubs. */ | |
| 12413 | ||
| 12414 | static bfd_boolean | |
| 12415 | build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) | |
| 12416 | { | |
| 12417 | struct bfd_link_info *info; | |
| 12418 | struct ppc_link_hash_table *htab; | |
| 12419 | struct plt_entry *pent; | |
| 12420 | asection *s; | |
| 12421 | ||
| 12422 | if (h->root.type == bfd_link_hash_indirect) | |
| 12423 | return TRUE; | |
| 12424 | ||
| 12425 | if (!h->pointer_equality_needed) | |
| 12426 | return TRUE; | |
| 12427 | ||
| 12428 | if (h->def_regular) | |
| 12429 | return TRUE; | |
| 12430 | ||
| 12431 | info = inf; | |
| 12432 | htab = ppc_hash_table (info); | |
| 12433 | if (htab == NULL) | |
| 12434 | return FALSE; | |
| 12435 | ||
| 12436 | s = htab->glink; | |
| 12437 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 12438 | if (pent->plt.offset != (bfd_vma) -1 | |
| 12439 | && pent->addend == 0) | |
| 12440 | { | |
| 12441 | bfd_byte *p; | |
| 12442 | asection *plt; | |
| 12443 | bfd_vma off; | |
| 12444 | ||
| a345bc8d | 12445 | p = s->contents + h->root.u.def.value; |
| 33e44f2e | 12446 | plt = htab->elf.splt; |
| a345bc8d AM |
12447 | if (!htab->elf.dynamic_sections_created |
| 12448 | || h->dynindx == -1) | |
| 33e44f2e | 12449 | plt = htab->elf.iplt; |
| a345bc8d AM |
12450 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; |
| 12451 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; | |
| 12452 | ||
| 12453 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
| 12454 | { | |
| 12455 | info->callbacks->einfo | |
| 12456 | (_("%P: linkage table error against `%T'\n"), | |
| 12457 | h->root.root.string); | |
| 12458 | bfd_set_error (bfd_error_bad_value); | |
| 12459 | htab->stub_error = TRUE; | |
| 12460 | } | |
| 12461 | ||
| 12462 | if (PPC_HA (off) != 0) | |
| 12463 | { | |
| 12464 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
| 12465 | p += 4; | |
| 12466 | } | |
| 12467 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
| 12468 | p += 4; | |
| 12469 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
| 12470 | p += 4; | |
| 12471 | bfd_put_32 (s->owner, BCTR, p); | |
| 12472 | break; | |
| 12473 | } | |
| 12474 | return TRUE; | |
| 12475 | } | |
| 12476 | ||
| 721956f4 AM |
12477 | /* Build all the stubs associated with the current output file. |
| 12478 | The stubs are kept in a hash table attached to the main linker | |
| 12479 | hash table. This function is called via gldelf64ppc_finish. */ | |
| 12480 | ||
| b34976b6 | 12481 | bfd_boolean |
| e7d1c40c | 12482 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
| 4ce794b7 | 12483 | char **stats) |
| 5d1634d7 AM |
12484 | { |
| 12485 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 721956f4 | 12486 | asection *stub_sec; |
| 5d1634d7 | 12487 | bfd_byte *p; |
| e717da7e | 12488 | int stub_sec_count = 0; |
| 5d1634d7 | 12489 | |
| 4dfe6ac6 NC |
12490 | if (htab == NULL) |
| 12491 | return FALSE; | |
| 12492 | ||
| eea6121a | 12493 | /* Allocate memory to hold the linker stubs. */ |
| e7d1c40c | 12494 | for (stub_sec = htab->params->stub_bfd->sections; |
| 721956f4 AM |
12495 | stub_sec != NULL; |
| 12496 | stub_sec = stub_sec->next) | |
| eea6121a AM |
12497 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
| 12498 | && stub_sec->size != 0) | |
| e717da7e | 12499 | { |
| e7d1c40c | 12500 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
| eea6121a AM |
12501 | if (stub_sec->contents == NULL) |
| 12502 | return FALSE; | |
| 12503 | /* We want to check that built size is the same as calculated | |
| 12504 | size. rawsize is a convenient location to use. */ | |
| 12505 | stub_sec->rawsize = stub_sec->size; | |
| 12506 | stub_sec->size = 0; | |
| e717da7e | 12507 | } |
| 5d1634d7 | 12508 | |
| 23eb7e01 | 12509 | if (htab->glink != NULL && htab->glink->size != 0) |
| 5d1634d7 | 12510 | { |
| 9f951329 | 12511 | unsigned int indx; |
| ad8e1ba5 | 12512 | bfd_vma plt0; |
| 9f951329 | 12513 | |
| 721956f4 | 12514 | /* Build the .glink plt call stub. */ |
| e7d1c40c | 12515 | if (htab->params->emit_stub_syms) |
| 97b639ba AM |
12516 | { |
| 12517 | struct elf_link_hash_entry *h; | |
| 468392fb AM |
12518 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
| 12519 | TRUE, FALSE, FALSE); | |
| 97b639ba AM |
12520 | if (h == NULL) |
| 12521 | return FALSE; | |
| 12522 | if (h->root.type == bfd_link_hash_new) | |
| 12523 | { | |
| 12524 | h->root.type = bfd_link_hash_defined; | |
| 12525 | h->root.u.def.section = htab->glink; | |
| ee4bf8d2 | 12526 | h->root.u.def.value = 8; |
| f5385ebf AM |
12527 | h->ref_regular = 1; |
| 12528 | h->def_regular = 1; | |
| 12529 | h->ref_regular_nonweak = 1; | |
| 12530 | h->forced_local = 1; | |
| 12531 | h->non_elf = 0; | |
| 97b639ba AM |
12532 | } |
| 12533 | } | |
| 33e44f2e AM |
12534 | plt0 = (htab->elf.splt->output_section->vma |
| 12535 | + htab->elf.splt->output_offset | |
| 12536 | - 16); | |
| 176a0d42 AM |
12537 | if (info->emitrelocations) |
| 12538 | { | |
| 12539 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
| 12540 | if (r == NULL) | |
| 12541 | return FALSE; | |
| 12542 | r->r_offset = (htab->glink->output_offset | |
| 12543 | + htab->glink->output_section->vma); | |
| 12544 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
| 12545 | r->r_addend = plt0; | |
| 12546 | } | |
| 4ce794b7 | 12547 | p = htab->glink->contents; |
| 176a0d42 | 12548 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
| ee4bf8d2 AM |
12549 | bfd_put_64 (htab->glink->owner, plt0, p); |
| 12550 | p += 8; | |
| b9e5796b AM |
12551 | if (htab->opd_abi) |
| 12552 | { | |
| 12553 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
| 12554 | p += 4; | |
| 12555 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
| 12556 | p += 4; | |
| 12557 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
| 12558 | p += 4; | |
| 12559 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
| 12560 | p += 4; | |
| 12561 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
| 12562 | p += 4; | |
| 12563 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
| 12564 | p += 4; | |
| 12565 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
| 12566 | p += 4; | |
| 12567 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
| 12568 | p += 4; | |
| 12569 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
| 12570 | p += 4; | |
| 12571 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
| 12572 | p += 4; | |
| 12573 | } | |
| 12574 | else | |
| 12575 | { | |
| 12576 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
| 12577 | p += 4; | |
| 12578 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
| 12579 | p += 4; | |
| 12580 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
| 12581 | p += 4; | |
| 12582 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
| 12583 | p += 4; | |
| 12584 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
| 12585 | p += 4; | |
| 12586 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
| 12587 | p += 4; | |
| 12588 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
| 12589 | p += 4; | |
| 12590 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
| 12591 | p += 4; | |
| 12592 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
| 12593 | p += 4; | |
| 12594 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
| 12595 | p += 4; | |
| 12596 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
| 12597 | p += 4; | |
| 12598 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
| 12599 | p += 4; | |
| 12600 | } | |
| 4ce794b7 | 12601 | bfd_put_32 (htab->glink->owner, BCTR, p); |
| ad8e1ba5 | 12602 | p += 4; |
| ee4bf8d2 AM |
12603 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
| 12604 | { | |
| 12605 | bfd_put_32 (htab->glink->owner, NOP, p); | |
| 12606 | p += 4; | |
| 12607 | } | |
| ad8e1ba5 | 12608 | |
| 9f951329 AM |
12609 | /* Build the .glink lazy link call stubs. */ |
| 12610 | indx = 0; | |
| a345bc8d | 12611 | while (p < htab->glink->contents + htab->glink->rawsize) |
| 9f951329 | 12612 | { |
| b9e5796b | 12613 | if (htab->opd_abi) |
| 9f951329 | 12614 | { |
| b9e5796b AM |
12615 | if (indx < 0x8000) |
| 12616 | { | |
| 12617 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
| 12618 | p += 4; | |
| 12619 | } | |
| 12620 | else | |
| 12621 | { | |
| 12622 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
| 12623 | p += 4; | |
| 12624 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
| 12625 | p); | |
| 12626 | p += 4; | |
| 12627 | } | |
| 9f951329 | 12628 | } |
| 4ce794b7 | 12629 | bfd_put_32 (htab->glink->owner, |
| ee4bf8d2 | 12630 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
| a16d5acb | 12631 | indx++; |
| 9f951329 AM |
12632 | p += 4; |
| 12633 | } | |
| a345bc8d AM |
12634 | |
| 12635 | /* Build .glink global entry stubs. */ | |
| 12636 | if (htab->glink->size > htab->glink->rawsize) | |
| afe397ea | 12637 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info); |
| 5d1634d7 | 12638 | } |
| 5d1634d7 | 12639 | |
| eea6121a | 12640 | if (htab->brlt->size != 0) |
| 721956f4 | 12641 | { |
| 4ce794b7 | 12642 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
| eea6121a | 12643 | htab->brlt->size); |
| 4ce794b7 | 12644 | if (htab->brlt->contents == NULL) |
| b34976b6 | 12645 | return FALSE; |
| 721956f4 | 12646 | } |
| ee75fd95 | 12647 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
| 63bc6f6c AM |
12648 | { |
| 12649 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
| eea6121a | 12650 | htab->relbrlt->size); |
| 63bc6f6c AM |
12651 | if (htab->relbrlt->contents == NULL) |
| 12652 | return FALSE; | |
| 12653 | } | |
| 5d1634d7 | 12654 | |
| 58d180e8 AM |
12655 | if (htab->glink_eh_frame != NULL |
| 12656 | && htab->glink_eh_frame->size != 0) | |
| 12657 | { | |
| 12658 | bfd_vma val; | |
| 4bbe044a AM |
12659 | bfd_byte *last_fde; |
| 12660 | size_t last_fde_len, size, align, pad; | |
| 58d180e8 AM |
12661 | |
| 12662 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
| 12663 | if (p == NULL) | |
| 12664 | return FALSE; | |
| 12665 | htab->glink_eh_frame->contents = p; | |
| 4bbe044a | 12666 | last_fde = p; |
| 58d180e8 AM |
12667 | |
| 12668 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; | |
| 12669 | ||
| 12670 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
| 12671 | /* CIE length (rewrite in case little-endian). */ | |
| 4bbe044a AM |
12672 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; |
| 12673 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
| 58d180e8 AM |
12674 | p += sizeof (glink_eh_frame_cie); |
| 12675 | ||
| e7d1c40c | 12676 | for (stub_sec = htab->params->stub_bfd->sections; |
| 58d180e8 AM |
12677 | stub_sec != NULL; |
| 12678 | stub_sec = stub_sec->next) | |
| 12679 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 12680 | { | |
| 4bbe044a AM |
12681 | last_fde = p; |
| 12682 | last_fde_len = 16; | |
| 58d180e8 AM |
12683 | /* FDE length. */ |
| 12684 | bfd_put_32 (htab->elf.dynobj, 16, p); | |
| 12685 | p += 4; | |
| 12686 | /* CIE pointer. */ | |
| 12687 | val = p - htab->glink_eh_frame->contents; | |
| 12688 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12689 | p += 4; | |
| 12690 | /* Offset to stub section. */ | |
| 12691 | val = (stub_sec->output_section->vma | |
| 12692 | + stub_sec->output_offset); | |
| 12693 | val -= (htab->glink_eh_frame->output_section->vma | |
| 12694 | + htab->glink_eh_frame->output_offset); | |
| 12695 | val -= p - htab->glink_eh_frame->contents; | |
| 12696 | if (val + 0x80000000 > 0xffffffff) | |
| 12697 | { | |
| 12698 | info->callbacks->einfo | |
| 8de848d8 | 12699 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
| 58d180e8 AM |
12700 | stub_sec->name); |
| 12701 | return FALSE; | |
| 12702 | } | |
| 12703 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12704 | p += 4; | |
| 12705 | /* stub section size. */ | |
| 12706 | bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p); | |
| 12707 | p += 4; | |
| 12708 | /* Augmentation. */ | |
| 12709 | p += 1; | |
| 12710 | /* Pad. */ | |
| 12711 | p += 3; | |
| 12712 | } | |
| 12713 | if (htab->glink != NULL && htab->glink->size != 0) | |
| 12714 | { | |
| 4bbe044a AM |
12715 | last_fde = p; |
| 12716 | last_fde_len = 20; | |
| 58d180e8 AM |
12717 | /* FDE length. */ |
| 12718 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
| 12719 | p += 4; | |
| 12720 | /* CIE pointer. */ | |
| 12721 | val = p - htab->glink_eh_frame->contents; | |
| 12722 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12723 | p += 4; | |
| 12724 | /* Offset to .glink. */ | |
| 12725 | val = (htab->glink->output_section->vma | |
| 12726 | + htab->glink->output_offset | |
| 12727 | + 8); | |
| 12728 | val -= (htab->glink_eh_frame->output_section->vma | |
| 12729 | + htab->glink_eh_frame->output_offset); | |
| 12730 | val -= p - htab->glink_eh_frame->contents; | |
| 12731 | if (val + 0x80000000 > 0xffffffff) | |
| 12732 | { | |
| 12733 | info->callbacks->einfo | |
| 8de848d8 | 12734 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
| 58d180e8 AM |
12735 | htab->glink->name); |
| 12736 | return FALSE; | |
| 12737 | } | |
| 12738 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12739 | p += 4; | |
| 12740 | /* .glink size. */ | |
| a345bc8d | 12741 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); |
| 58d180e8 AM |
12742 | p += 4; |
| 12743 | /* Augmentation. */ | |
| 12744 | p += 1; | |
| 12745 | ||
| 12746 | *p++ = DW_CFA_advance_loc + 1; | |
| 12747 | *p++ = DW_CFA_register; | |
| 12748 | *p++ = 65; | |
| 12749 | *p++ = 12; | |
| 12750 | *p++ = DW_CFA_advance_loc + 4; | |
| 12751 | *p++ = DW_CFA_restore_extended; | |
| 12752 | *p++ = 65; | |
| 12753 | } | |
| 4bbe044a AM |
12754 | /* Subsume any padding into the last FDE if user .eh_frame |
| 12755 | sections are aligned more than glink_eh_frame. Otherwise any | |
| 12756 | zero padding will be seen as a terminator. */ | |
| 12757 | size = p - htab->glink_eh_frame->contents; | |
| 12758 | align = 1; | |
| 12759 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
| 12760 | align -= 1; | |
| 12761 | pad = ((size + align) & ~align) - size; | |
| 12762 | htab->glink_eh_frame->size = size + pad; | |
| 12763 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
| 58d180e8 AM |
12764 | } |
| 12765 | ||
| 721956f4 AM |
12766 | /* Build the stubs as directed by the stub hash table. */ |
| 12767 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
| 5d1634d7 | 12768 | |
| aa8a7074 AM |
12769 | if (htab->relbrlt != NULL) |
| 12770 | htab->relbrlt->reloc_count = 0; | |
| 12771 | ||
| e7d1c40c AM |
12772 | if (htab->params->plt_stub_align != 0) |
| 12773 | for (stub_sec = htab->params->stub_bfd->sections; | |
| 794e51c0 AM |
12774 | stub_sec != NULL; |
| 12775 | stub_sec = stub_sec->next) | |
| 12776 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| e7d1c40c AM |
12777 | stub_sec->size = ((stub_sec->size |
| 12778 | + (1 << htab->params->plt_stub_align) - 1) | |
| 12779 | & (-1 << htab->params->plt_stub_align)); | |
| 794e51c0 | 12780 | |
| e7d1c40c | 12781 | for (stub_sec = htab->params->stub_bfd->sections; |
| 721956f4 AM |
12782 | stub_sec != NULL; |
| 12783 | stub_sec = stub_sec->next) | |
| e717da7e AM |
12784 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| 12785 | { | |
| 12786 | stub_sec_count += 1; | |
| eea6121a | 12787 | if (stub_sec->rawsize != stub_sec->size) |
| e717da7e AM |
12788 | break; |
| 12789 | } | |
| 5d1634d7 | 12790 | |
| 721956f4 | 12791 | if (stub_sec != NULL |
| 58d180e8 AM |
12792 | || (htab->glink_eh_frame != NULL |
| 12793 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
| 5d1634d7 | 12794 | { |
| b34976b6 | 12795 | htab->stub_error = TRUE; |
| 8de848d8 | 12796 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
| 5d1634d7 | 12797 | } |
| 721956f4 | 12798 | |
| d2a300cf AM |
12799 | if (htab->stub_error) |
| 12800 | return FALSE; | |
| 12801 | ||
| 12802 | if (stats != NULL) | |
| 12803 | { | |
| 12804 | *stats = bfd_malloc (500); | |
| 12805 | if (*stats == NULL) | |
| 12806 | return FALSE; | |
| 12807 | ||
| ee75fd95 | 12808 | sprintf (*stats, _("linker stubs in %u group%s\n" |
| d2a300cf AM |
12809 | " branch %lu\n" |
| 12810 | " toc adjust %lu\n" | |
| 12811 | " long branch %lu\n" | |
| 12812 | " long toc adj %lu\n" | |
| 794e51c0 AM |
12813 | " plt call %lu\n" |
| 12814 | " plt call toc %lu"), | |
| e717da7e | 12815 | stub_sec_count, |
| ee75fd95 | 12816 | stub_sec_count == 1 ? "" : "s", |
| 4ce794b7 AM |
12817 | htab->stub_count[ppc_stub_long_branch - 1], |
| 12818 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
| 12819 | htab->stub_count[ppc_stub_plt_branch - 1], | |
| 12820 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
| 794e51c0 AM |
12821 | htab->stub_count[ppc_stub_plt_call - 1], |
| 12822 | htab->stub_count[ppc_stub_plt_call_r2save - 1]); | |
| d2a300cf AM |
12823 | } |
| 12824 | return TRUE; | |
| 5bd4f169 AM |
12825 | } |
| 12826 | ||
| 99877b66 AM |
12827 | /* This function undoes the changes made by add_symbol_adjust. */ |
| 12828 | ||
| 12829 | static bfd_boolean | |
| 12830 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 12831 | { | |
| 12832 | struct ppc_link_hash_entry *eh; | |
| 12833 | ||
| 12834 | if (h->root.type == bfd_link_hash_indirect) | |
| 12835 | return TRUE; | |
| 12836 | ||
| 99877b66 AM |
12837 | eh = (struct ppc_link_hash_entry *) h; |
| 12838 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
| 12839 | return TRUE; | |
| 12840 | ||
| 12841 | eh->elf.root.type = bfd_link_hash_undefined; | |
| 12842 | return TRUE; | |
| 12843 | } | |
| 12844 | ||
| 12845 | void | |
| 12846 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
| 12847 | { | |
| 12848 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
12849 | |
| 12850 | if (htab != NULL) | |
| 12851 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
| 99877b66 AM |
12852 | } |
| 12853 | ||
| 60124e18 AM |
12854 | /* What to do when ld finds relocations against symbols defined in |
| 12855 | discarded sections. */ | |
| 12856 | ||
| 12857 | static unsigned int | |
| 12858 | ppc64_elf_action_discarded (asection *sec) | |
| 12859 | { | |
| 12860 | if (strcmp (".opd", sec->name) == 0) | |
| 12861 | return 0; | |
| 12862 | ||
| 12863 | if (strcmp (".toc", sec->name) == 0) | |
| 12864 | return 0; | |
| 12865 | ||
| bce50a28 JJ |
12866 | if (strcmp (".toc1", sec->name) == 0) |
| 12867 | return 0; | |
| 12868 | ||
| 60124e18 AM |
12869 | return _bfd_elf_default_action_discarded (sec); |
| 12870 | } | |
| 12871 | ||
| 5bd4f169 AM |
12872 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
| 12873 | to handle the relocations for a section. | |
| 12874 | ||
| 12875 | The relocs are always passed as Rela structures; if the section | |
| 12876 | actually uses Rel structures, the r_addend field will always be | |
| 12877 | zero. | |
| 12878 | ||
| 12879 | This function is responsible for adjust the section contents as | |
| 12880 | necessary, and (if using Rela relocs and generating a | |
| 1049f94e | 12881 | relocatable output file) adjusting the reloc addend as |
| 5bd4f169 AM |
12882 | necessary. |
| 12883 | ||
| 12884 | This function does not have to worry about setting the reloc | |
| 12885 | address or the reloc symbol index. | |
| 12886 | ||
| 12887 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
| 12888 | ||
| 12889 | LOCAL_SECTIONS is an array giving the section in the input file | |
| 12890 | corresponding to the st_shndx field of each local symbol. | |
| 12891 | ||
| 12892 | The global hash table entry for the global symbols can be found | |
| 12893 | via elf_sym_hashes (input_bfd). | |
| 12894 | ||
| 1049f94e | 12895 | When generating relocatable output, this function must handle |
| 5bd4f169 AM |
12896 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 12897 | going to be the section symbol corresponding to the output | |
| 12898 | section, which means that the addend must be adjusted | |
| 12899 | accordingly. */ | |
| 12900 | ||
| b34976b6 | 12901 | static bfd_boolean |
| 4ce794b7 AM |
12902 | ppc64_elf_relocate_section (bfd *output_bfd, |
| 12903 | struct bfd_link_info *info, | |
| 12904 | bfd *input_bfd, | |
| 12905 | asection *input_section, | |
| 12906 | bfd_byte *contents, | |
| 12907 | Elf_Internal_Rela *relocs, | |
| 12908 | Elf_Internal_Sym *local_syms, | |
| 12909 | asection **local_sections) | |
| 5bd4f169 | 12910 | { |
| 65f38f15 | 12911 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
12912 | Elf_Internal_Shdr *symtab_hdr; |
| 12913 | struct elf_link_hash_entry **sym_hashes; | |
| 5bd4f169 AM |
12914 | Elf_Internal_Rela *rel; |
| 12915 | Elf_Internal_Rela *relend; | |
| 411e1bfb AM |
12916 | Elf_Internal_Rela outrel; |
| 12917 | bfd_byte *loc; | |
| 411e1bfb | 12918 | struct got_entry **local_got_ents; |
| 5bd4f169 | 12919 | bfd_vma TOCstart; |
| b34976b6 AM |
12920 | bfd_boolean ret = TRUE; |
| 12921 | bfd_boolean is_opd; | |
| 794e51c0 AM |
12922 | /* Assume 'at' branch hints. */ |
| 12923 | bfd_boolean is_isa_v2 = TRUE; | |
| 4fe5ca5b | 12924 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
| 5bd4f169 | 12925 | |
| 65f38f15 | 12926 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 12927 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
12928 | ppc_howto_init (); |
| 12929 | ||
| 65f38f15 | 12930 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
12931 | if (htab == NULL) |
| 12932 | return FALSE; | |
| ee75fd95 AM |
12933 | |
| 12934 | /* Don't relocate stub sections. */ | |
| e7d1c40c | 12935 | if (input_section->owner == htab->params->stub_bfd) |
| ee75fd95 AM |
12936 | return TRUE; |
| 12937 | ||
| 0c8d6e5c | 12938 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
| 0ffa91dd | 12939 | |
| 411e1bfb | 12940 | local_got_ents = elf_local_got_ents (input_bfd); |
| 5bd4f169 | 12941 | TOCstart = elf_gp (output_bfd); |
| 0ffa91dd | 12942 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 5bd4f169 | 12943 | sym_hashes = elf_sym_hashes (input_bfd); |
| 7c8fe5c4 | 12944 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
| 65f38f15 | 12945 | |
| 5bd4f169 AM |
12946 | rel = relocs; |
| 12947 | relend = relocs + input_section->reloc_count; | |
| 12948 | for (; rel < relend; rel++) | |
| 12949 | { | |
| 04c9666a | 12950 | enum elf_ppc64_reloc_type r_type; |
| 31c76678 | 12951 | bfd_vma addend; |
| 5bd4f169 AM |
12952 | bfd_reloc_status_type r; |
| 12953 | Elf_Internal_Sym *sym; | |
| 12954 | asection *sec; | |
| 039b3fef AM |
12955 | struct elf_link_hash_entry *h_elf; |
| 12956 | struct ppc_link_hash_entry *h; | |
| 12957 | struct ppc_link_hash_entry *fdh; | |
| 5bd4f169 | 12958 | const char *sym_name; |
| 0d4792f7 | 12959 | unsigned long r_symndx, toc_symndx; |
| 3a71aa26 | 12960 | bfd_vma toc_addend; |
| f961d9dd AM |
12961 | unsigned char tls_mask, tls_gd, tls_type; |
| 12962 | unsigned char sym_type; | |
| 5bd4f169 | 12963 | bfd_vma relocation; |
| b34976b6 AM |
12964 | bfd_boolean unresolved_reloc; |
| 12965 | bfd_boolean warned; | |
| bc30df16 | 12966 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
| 67f0cbdb | 12967 | unsigned int insn; |
| e11840f9 | 12968 | unsigned int mask; |
| 721956f4 AM |
12969 | struct ppc_stub_hash_entry *stub_entry; |
| 12970 | bfd_vma max_br_offset; | |
| 12971 | bfd_vma from; | |
| 31c76678 | 12972 | const Elf_Internal_Rela orig_rel = *rel; |
| b80eed39 AM |
12973 | reloc_howto_type *howto; |
| 12974 | struct reloc_howto_struct alt_howto; | |
| 5bd4f169 | 12975 | |
| 4ce794b7 | 12976 | r_type = ELF64_R_TYPE (rel->r_info); |
| 5bd4f169 | 12977 | r_symndx = ELF64_R_SYM (rel->r_info); |
| ee87f2da AM |
12978 | |
| 12979 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
| 12980 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
| 12981 | proper TOC base to use. */ | |
| 12982 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
| 12983 | && rel != relocs | |
| 12984 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
| 12985 | && is_opd) | |
| 12986 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
| 12987 | ||
| 4ce794b7 AM |
12988 | sym = NULL; |
| 12989 | sec = NULL; | |
| 039b3fef | 12990 | h_elf = NULL; |
| 4ce794b7 | 12991 | sym_name = NULL; |
| b34976b6 AM |
12992 | unresolved_reloc = FALSE; |
| 12993 | warned = FALSE; | |
| 65f38f15 | 12994 | |
| 0b13192e | 12995 | if (r_symndx < symtab_hdr->sh_info) |
| 5bd4f169 AM |
12996 | { |
| 12997 | /* It's a local symbol. */ | |
| 74f0fb50 | 12998 | struct _opd_sec_data *opd; |
| 4025353c | 12999 | |
| 5bd4f169 AM |
13000 | sym = local_syms + r_symndx; |
| 13001 | sec = local_sections[r_symndx]; | |
| 26c61ae5 | 13002 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
| 0d4792f7 | 13003 | sym_type = ELF64_ST_TYPE (sym->st_info); |
| 8517fae7 | 13004 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 74f0fb50 AM |
13005 | opd = get_opd_info (sec); |
| 13006 | if (opd != NULL && opd->adjust != NULL) | |
| 1e2f5b6e | 13007 | { |
| 74f0fb50 | 13008 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
| 4025353c AM |
13009 | if (adjust == -1) |
| 13010 | relocation = 0; | |
| 13011 | else | |
| 4cc603a5 AM |
13012 | { |
| 13013 | /* If this is a relocation against the opd section sym | |
| 13014 | and we have edited .opd, adjust the reloc addend so | |
| 13015 | that ld -r and ld --emit-relocs output is correct. | |
| 13016 | If it is a reloc against some other .opd symbol, | |
| 13017 | then the symbol value will be adjusted later. */ | |
| 13018 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
| 13019 | rel->r_addend += adjust; | |
| 13020 | else | |
| 13021 | relocation += adjust; | |
| 13022 | } | |
| 1e2f5b6e | 13023 | } |
| 5bd4f169 AM |
13024 | } |
| 13025 | else | |
| 13026 | { | |
| 62d887d4 L |
13027 | bfd_boolean ignored; |
| 13028 | ||
| b2a8e766 AM |
13029 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 13030 | r_symndx, symtab_hdr, sym_hashes, | |
| 039b3fef | 13031 | h_elf, sec, relocation, |
| 62d887d4 | 13032 | unresolved_reloc, warned, ignored); |
| 039b3fef AM |
13033 | sym_name = h_elf->root.root.string; |
| 13034 | sym_type = h_elf->type; | |
| b69fdb4e AM |
13035 | if (sec != NULL |
| 13036 | && sec->owner == output_bfd | |
| 13037 | && strcmp (sec->name, ".opd") == 0) | |
| 13038 | { | |
| 13039 | /* This is a symbol defined in a linker script. All | |
| 13040 | such are defined in output sections, even those | |
| 13041 | defined by simple assignment from a symbol defined in | |
| 13042 | an input section. Transfer the symbol to an | |
| 13043 | appropriate input .opd section, so that a branch to | |
| 13044 | this symbol will be mapped to the location specified | |
| 13045 | by the opd entry. */ | |
| 13046 | struct bfd_link_order *lo; | |
| 13047 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
| 13048 | if (lo->type == bfd_indirect_link_order) | |
| 13049 | { | |
| 13050 | asection *isec = lo->u.indirect.section; | |
| 13051 | if (h_elf->root.u.def.value >= isec->output_offset | |
| 13052 | && h_elf->root.u.def.value < (isec->output_offset | |
| 13053 | + isec->size)) | |
| 13054 | { | |
| 13055 | h_elf->root.u.def.value -= isec->output_offset; | |
| 13056 | h_elf->root.u.def.section = isec; | |
| 13057 | sec = isec; | |
| 13058 | break; | |
| 13059 | } | |
| 13060 | } | |
| 13061 | } | |
| 5bd4f169 | 13062 | } |
| 039b3fef | 13063 | h = (struct ppc_link_hash_entry *) h_elf; |
| 5bd4f169 | 13064 | |
| dbaa2011 | 13065 | if (sec != NULL && discarded_section (sec)) |
| e4067dbb | 13066 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
| 545fd46b MR |
13067 | rel, 1, relend, |
| 13068 | ppc64_elf_howto_table[r_type], 0, | |
| e4067dbb | 13069 | contents); |
| ab96bf03 AM |
13070 | |
| 13071 | if (info->relocatable) | |
| 13072 | continue; | |
| 13073 | ||
| f40da81b AM |
13074 | if (h != NULL && &h->elf == htab->elf.hgot) |
| 13075 | { | |
| 13076 | relocation = (TOCstart | |
| 13077 | + htab->stub_group[input_section->id].toc_off); | |
| 13078 | sec = bfd_abs_section_ptr; | |
| 13079 | unresolved_reloc = FALSE; | |
| 13080 | } | |
| 13081 | ||
| 951fd09b AM |
13082 | /* TLS optimizations. Replace instruction sequences and relocs |
| 13083 | based on information we collected in tls_optimize. We edit | |
| 13084 | RELOCS so that --emit-relocs will output something sensible | |
| 13085 | for the final instruction stream. */ | |
| 13086 | tls_mask = 0; | |
| 13087 | tls_gd = 0; | |
| 0d4792f7 | 13088 | toc_symndx = 0; |
| 727fc41e AM |
13089 | if (h != NULL) |
| 13090 | tls_mask = h->tls_mask; | |
| 13091 | else if (local_got_ents != NULL) | |
| 411e1bfb | 13092 | { |
| e054468f AM |
13093 | struct plt_entry **local_plt = (struct plt_entry **) |
| 13094 | (local_got_ents + symtab_hdr->sh_info); | |
| f961d9dd | 13095 | unsigned char *lgot_masks = (unsigned char *) |
| e054468f | 13096 | (local_plt + symtab_hdr->sh_info); |
| 727fc41e AM |
13097 | tls_mask = lgot_masks[r_symndx]; |
| 13098 | } | |
| 13099 | if (tls_mask == 0 | |
| 13100 | && (r_type == R_PPC64_TLS | |
| 13101 | || r_type == R_PPC64_TLSGD | |
| 13102 | || r_type == R_PPC64_TLSLD)) | |
| 13103 | { | |
| 13104 | /* Check for toc tls entries. */ | |
| f961d9dd | 13105 | unsigned char *toc_tls; |
| 0d4792f7 | 13106 | |
| 727fc41e AM |
13107 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 13108 | &local_syms, rel, input_bfd)) | |
| 13109 | return FALSE; | |
| 0d4792f7 | 13110 | |
| 727fc41e AM |
13111 | if (toc_tls) |
| 13112 | tls_mask = *toc_tls; | |
| 0d4792f7 AM |
13113 | } |
| 13114 | ||
| 13115 | /* Check that tls relocs are used with tls syms, and non-tls | |
| 13116 | relocs are used with non-tls syms. */ | |
| cf35638d | 13117 | if (r_symndx != STN_UNDEF |
| 0d4792f7 AM |
13118 | && r_type != R_PPC64_NONE |
| 13119 | && (h == NULL | |
| 039b3fef AM |
13120 | || h->elf.root.type == bfd_link_hash_defined |
| 13121 | || h->elf.root.type == bfd_link_hash_defweak) | |
| 1d483afe AM |
13122 | && (IS_PPC64_TLS_RELOC (r_type) |
| 13123 | != (sym_type == STT_TLS | |
| 13124 | || (sym_type == STT_SECTION | |
| 13125 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
| 0d4792f7 | 13126 | { |
| 727fc41e AM |
13127 | if (tls_mask != 0 |
| 13128 | && (r_type == R_PPC64_TLS | |
| 13129 | || r_type == R_PPC64_TLSGD | |
| 13130 | || r_type == R_PPC64_TLSLD)) | |
| 0d4792f7 AM |
13131 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
| 13132 | ; | |
| 13133 | else | |
| 25f53a85 | 13134 | info->callbacks->einfo |
| 1d483afe | 13135 | (!IS_PPC64_TLS_RELOC (r_type) |
| bc30df16 AM |
13136 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
| 13137 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
| 25f53a85 | 13138 | input_bfd, input_section, rel->r_offset, |
| 0d4792f7 AM |
13139 | ppc64_elf_howto_table[r_type]->name, |
| 13140 | sym_name); | |
| 411e1bfb AM |
13141 | } |
| 13142 | ||
| 13143 | /* Ensure reloc mapping code below stays sane. */ | |
| 13144 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
| 13145 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
| 13146 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
| 13147 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
| 13148 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
| 13149 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
| 13150 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
| 13151 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
| 13152 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
| 13153 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
| 13154 | abort (); | |
| 0d4792f7 | 13155 | |
| 411e1bfb AM |
13156 | switch (r_type) |
| 13157 | { | |
| 13158 | default: | |
| 411e1bfb AM |
13159 | break; |
| 13160 | ||
| ba761f19 AM |
13161 | case R_PPC64_LO_DS_OPT: |
| 13162 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
| 13163 | if ((insn & (0x3f << 26)) != 58u << 26) | |
| 13164 | abort (); | |
| 13165 | insn += (14u << 26) - (58u << 26); | |
| 13166 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
| 13167 | r_type = R_PPC64_TOC16_LO; | |
| 13168 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13169 | break; | |
| 13170 | ||
| 411e1bfb AM |
13171 | case R_PPC64_TOC16: |
| 13172 | case R_PPC64_TOC16_LO: | |
| 13173 | case R_PPC64_TOC16_DS: | |
| 13174 | case R_PPC64_TOC16_LO_DS: | |
| 411e1bfb AM |
13175 | { |
| 13176 | /* Check for toc tls entries. */ | |
| f961d9dd | 13177 | unsigned char *toc_tls; |
| 951fd09b | 13178 | int retval; |
| 411e1bfb | 13179 | |
| 3a71aa26 AM |
13180 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 13181 | &local_syms, rel, input_bfd); | |
| 951fd09b | 13182 | if (retval == 0) |
| 411e1bfb AM |
13183 | return FALSE; |
| 13184 | ||
| 13185 | if (toc_tls) | |
| 13186 | { | |
| 951fd09b | 13187 | tls_mask = *toc_tls; |
| 411e1bfb AM |
13188 | if (r_type == R_PPC64_TOC16_DS |
| 13189 | || r_type == R_PPC64_TOC16_LO_DS) | |
| 81407a69 AM |
13190 | { |
| 13191 | if (tls_mask != 0 | |
| 13192 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
| 13193 | goto toctprel; | |
| 13194 | } | |
| 411e1bfb | 13195 | else |
| 951fd09b AM |
13196 | { |
| 13197 | /* If we found a GD reloc pair, then we might be | |
| 13198 | doing a GD->IE transition. */ | |
| 13199 | if (retval == 2) | |
| 13200 | { | |
| 13201 | tls_gd = TLS_TPRELGD; | |
| 13202 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 13203 | goto tls_ldgd_opt; |
| 951fd09b AM |
13204 | } |
| 13205 | else if (retval == 3) | |
| 13206 | { | |
| 13207 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 102890f0 | 13208 | goto tls_ldgd_opt; |
| 951fd09b AM |
13209 | } |
| 13210 | } | |
| 411e1bfb AM |
13211 | } |
| 13212 | } | |
| 13213 | break; | |
| 13214 | ||
| 9d6ded02 AM |
13215 | case R_PPC64_GOT_TPREL16_HI: |
| 13216 | case R_PPC64_GOT_TPREL16_HA: | |
| 13217 | if (tls_mask != 0 | |
| 13218 | && (tls_mask & TLS_TPREL) == 0) | |
| 13219 | { | |
| 13220 | rel->r_offset -= d_offset; | |
| 13221 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
| 13222 | r_type = R_PPC64_NONE; | |
| 13223 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13224 | } | |
| 13225 | break; | |
| 13226 | ||
| 411e1bfb AM |
13227 | case R_PPC64_GOT_TPREL16_DS: |
| 13228 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 951fd09b AM |
13229 | if (tls_mask != 0 |
| 13230 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 13231 | { |
| 81407a69 | 13232 | toctprel: |
| 4fe5ca5b | 13233 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
| 411e1bfb AM |
13234 | insn &= 31 << 21; |
| 13235 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
| 4fe5ca5b | 13236 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
| 411e1bfb | 13237 | r_type = R_PPC64_TPREL16_HA; |
| 0d4792f7 AM |
13238 | if (toc_symndx != 0) |
| 13239 | { | |
| 13240 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 13241 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
13242 | /* We changed the symbol. Start over in order to |
| 13243 | get h, sym, sec etc. right. */ | |
| 13244 | rel--; | |
| 13245 | continue; | |
| 13246 | } | |
| 13247 | else | |
| 13248 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
13249 | } |
| 13250 | break; | |
| 13251 | ||
| 13252 | case R_PPC64_TLS: | |
| 951fd09b AM |
13253 | if (tls_mask != 0 |
| 13254 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 13255 | { |
| 411e1bfb | 13256 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
| 2d0f3896 AM |
13257 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
| 13258 | if (insn == 0) | |
| 411e1bfb | 13259 | abort (); |
| 411e1bfb | 13260 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
| 411e1bfb | 13261 | /* Was PPC64_TLS which sits on insn boundary, now |
| 4fe5ca5b GM |
13262 | PPC64_TPREL16_LO which is at low-order half-word. */ |
| 13263 | rel->r_offset += d_offset; | |
| 0d4792f7 AM |
13264 | r_type = R_PPC64_TPREL16_LO; |
| 13265 | if (toc_symndx != 0) | |
| 13266 | { | |
| 13267 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 13268 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
13269 | /* We changed the symbol. Start over in order to |
| 13270 | get h, sym, sec etc. right. */ | |
| 13271 | rel--; | |
| 13272 | continue; | |
| 13273 | } | |
| 13274 | else | |
| 13275 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
13276 | } |
| 13277 | break; | |
| 13278 | ||
| 411e1bfb AM |
13279 | case R_PPC64_GOT_TLSGD16_HI: |
| 13280 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b AM |
13281 | tls_gd = TLS_TPRELGD; |
| 13282 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 13283 | goto tls_gdld_hi; | |
| 13284 | break; | |
| 13285 | ||
| 411e1bfb AM |
13286 | case R_PPC64_GOT_TLSLD16_HI: |
| 13287 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 13288 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
| 411e1bfb | 13289 | { |
| 951fd09b AM |
13290 | tls_gdld_hi: |
| 13291 | if ((tls_mask & tls_gd) != 0) | |
| 13292 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 13293 | + R_PPC64_GOT_TPREL16_DS); | |
| 13294 | else | |
| 411e1bfb | 13295 | { |
| 4fe5ca5b | 13296 | rel->r_offset -= d_offset; |
| 727ac201 | 13297 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
| 951fd09b | 13298 | r_type = R_PPC64_NONE; |
| 411e1bfb | 13299 | } |
| 951fd09b | 13300 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb AM |
13301 | } |
| 13302 | break; | |
| 13303 | ||
| 951fd09b AM |
13304 | case R_PPC64_GOT_TLSGD16: |
| 13305 | case R_PPC64_GOT_TLSGD16_LO: | |
| 13306 | tls_gd = TLS_TPRELGD; | |
| 13307 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 13308 | goto tls_ldgd_opt; |
| 951fd09b | 13309 | break; |
| 411e1bfb | 13310 | |
| 951fd09b AM |
13311 | case R_PPC64_GOT_TLSLD16: |
| 13312 | case R_PPC64_GOT_TLSLD16_LO: | |
| 13313 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 13314 | { | |
| 3a71aa26 | 13315 | unsigned int insn1, insn2, insn3; |
| 102890f0 AM |
13316 | bfd_vma offset; |
| 13317 | ||
| 13318 | tls_ldgd_opt: | |
| 727fc41e AM |
13319 | offset = (bfd_vma) -1; |
| 13320 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
| 13321 | __tls_get_addr calls, we must trust that the call | |
| 13322 | stays with its arg setup insns, ie. that the next | |
| 13323 | reloc is the __tls_get_addr call associated with | |
| 13324 | the current reloc. Edit both insns. */ | |
| 13325 | if (input_section->has_tls_get_addr_call | |
| 13326 | && rel + 1 < relend | |
| 13327 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
| 13328 | htab->tls_get_addr, | |
| 13329 | htab->tls_get_addr_fd)) | |
| 13330 | offset = rel[1].r_offset; | |
| 102890f0 | 13331 | if ((tls_mask & tls_gd) != 0) |
| 411e1bfb | 13332 | { |
| 102890f0 | 13333 | /* IE */ |
| 3a71aa26 AM |
13334 | insn1 = bfd_get_32 (output_bfd, |
| 13335 | contents + rel->r_offset - d_offset); | |
| 102890f0 AM |
13336 | insn1 &= (1 << 26) - (1 << 2); |
| 13337 | insn1 |= 58 << 26; /* ld */ | |
| 13338 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 727fc41e | 13339 | if (offset != (bfd_vma) -1) |
| f58d5a2d | 13340 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 102890f0 AM |
13341 | if ((tls_mask & TLS_EXPLICIT) == 0) |
| 13342 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 13343 | + R_PPC64_GOT_TPREL16_DS); | |
| 411e1bfb | 13344 | else |
| 102890f0 AM |
13345 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
| 13346 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13347 | } | |
| 13348 | else | |
| 13349 | { | |
| 13350 | /* LE */ | |
| 13351 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
| 13352 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 13353 | if (tls_gd == 0) | |
| 951fd09b | 13354 | { |
| 102890f0 | 13355 | /* Was an LD reloc. */ |
| 1d483afe AM |
13356 | if (toc_symndx) |
| 13357 | sec = local_sections[toc_symndx]; | |
| 13358 | for (r_symndx = 0; | |
| 13359 | r_symndx < symtab_hdr->sh_info; | |
| 13360 | r_symndx++) | |
| 13361 | if (local_sections[r_symndx] == sec) | |
| 13362 | break; | |
| 13363 | if (r_symndx >= symtab_hdr->sh_info) | |
| cf35638d | 13364 | r_symndx = STN_UNDEF; |
| 102890f0 | 13365 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
| cf35638d | 13366 | if (r_symndx != STN_UNDEF) |
| 1d483afe AM |
13367 | rel->r_addend -= (local_syms[r_symndx].st_value |
| 13368 | + sec->output_offset | |
| 13369 | + sec->output_section->vma); | |
| 951fd09b | 13370 | } |
| 102890f0 | 13371 | else if (toc_symndx != 0) |
| 3a71aa26 AM |
13372 | { |
| 13373 | r_symndx = toc_symndx; | |
| 13374 | rel->r_addend = toc_addend; | |
| 13375 | } | |
| 102890f0 AM |
13376 | r_type = R_PPC64_TPREL16_HA; |
| 13377 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 727fc41e AM |
13378 | if (offset != (bfd_vma) -1) |
| 13379 | { | |
| 13380 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
| 13381 | R_PPC64_TPREL16_LO); | |
| 13382 | rel[1].r_offset = offset + d_offset; | |
| 13383 | rel[1].r_addend = rel->r_addend; | |
| 13384 | } | |
| 102890f0 | 13385 | } |
| 3a71aa26 AM |
13386 | bfd_put_32 (output_bfd, insn1, |
| 13387 | contents + rel->r_offset - d_offset); | |
| 727fc41e AM |
13388 | if (offset != (bfd_vma) -1) |
| 13389 | { | |
| 13390 | insn3 = bfd_get_32 (output_bfd, | |
| 13391 | contents + offset + 4); | |
| 13392 | if (insn3 == NOP | |
| 13393 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13394 | { | |
| 13395 | rel[1].r_offset += 4; | |
| 13396 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
| 13397 | insn2 = NOP; | |
| 13398 | } | |
| 13399 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
| 13400 | } | |
| 13401 | if ((tls_mask & tls_gd) == 0 | |
| 13402 | && (tls_gd == 0 || toc_symndx != 0)) | |
| 13403 | { | |
| 13404 | /* We changed the symbol. Start over in order | |
| 13405 | to get h, sym, sec etc. right. */ | |
| 13406 | rel--; | |
| 13407 | continue; | |
| 13408 | } | |
| 13409 | } | |
| 13410 | break; | |
| 13411 | ||
| 13412 | case R_PPC64_TLSGD: | |
| 13413 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 13414 | { | |
| 13415 | unsigned int insn2, insn3; | |
| 13416 | bfd_vma offset = rel->r_offset; | |
| 13417 | ||
| 13418 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 13419 | { | |
| 13420 | /* IE */ | |
| 13421 | r_type = R_PPC64_NONE; | |
| 13422 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 13423 | } | |
| 13424 | else | |
| 13425 | { | |
| 13426 | /* LE */ | |
| 13427 | if (toc_symndx != 0) | |
| 13428 | { | |
| 13429 | r_symndx = toc_symndx; | |
| 13430 | rel->r_addend = toc_addend; | |
| 13431 | } | |
| 13432 | r_type = R_PPC64_TPREL16_LO; | |
| 13433 | rel->r_offset = offset + d_offset; | |
| 13434 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 13435 | } | |
| 13436 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13437 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 13438 | BFD_ASSERT (offset == rel[1].r_offset); | |
| f58d5a2d | 13439 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 3a71aa26 AM |
13440 | insn3 = bfd_get_32 (output_bfd, |
| 13441 | contents + offset + 4); | |
| 102890f0 AM |
13442 | if (insn3 == NOP |
| 13443 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13444 | { | |
| 727fc41e | 13445 | rel->r_offset += 4; |
| 3a71aa26 AM |
13446 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
| 13447 | insn2 = NOP; | |
| 102890f0 | 13448 | } |
| 102890f0 | 13449 | bfd_put_32 (output_bfd, insn2, contents + offset); |
| 727fc41e | 13450 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
| 102890f0 | 13451 | { |
| 102890f0 AM |
13452 | rel--; |
| 13453 | continue; | |
| 411e1bfb | 13454 | } |
| 411e1bfb | 13455 | } |
| 411e1bfb AM |
13456 | break; |
| 13457 | ||
| 727fc41e AM |
13458 | case R_PPC64_TLSLD: |
| 13459 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 13460 | { | |
| 13461 | unsigned int insn2, insn3; | |
| 13462 | bfd_vma offset = rel->r_offset; | |
| 13463 | ||
| 13464 | if (toc_symndx) | |
| 13465 | sec = local_sections[toc_symndx]; | |
| 13466 | for (r_symndx = 0; | |
| 13467 | r_symndx < symtab_hdr->sh_info; | |
| 13468 | r_symndx++) | |
| 13469 | if (local_sections[r_symndx] == sec) | |
| 13470 | break; | |
| 13471 | if (r_symndx >= symtab_hdr->sh_info) | |
| cf35638d | 13472 | r_symndx = STN_UNDEF; |
| 727fc41e | 13473 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
| cf35638d | 13474 | if (r_symndx != STN_UNDEF) |
| 727fc41e AM |
13475 | rel->r_addend -= (local_syms[r_symndx].st_value |
| 13476 | + sec->output_offset | |
| 13477 | + sec->output_section->vma); | |
| 13478 | ||
| 13479 | r_type = R_PPC64_TPREL16_LO; | |
| 13480 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13481 | rel->r_offset = offset + d_offset; | |
| 13482 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 13483 | BFD_ASSERT (offset == rel[1].r_offset); | |
| f58d5a2d | 13484 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 727fc41e AM |
13485 | insn2 = 0x38630000; /* addi 3,3,0 */ |
| 13486 | insn3 = bfd_get_32 (output_bfd, | |
| 13487 | contents + offset + 4); | |
| 13488 | if (insn3 == NOP | |
| 13489 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13490 | { | |
| 13491 | rel->r_offset += 4; | |
| 13492 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
| 13493 | insn2 = NOP; | |
| 13494 | } | |
| 13495 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
| 13496 | rel--; | |
| 13497 | continue; | |
| 13498 | } | |
| 13499 | break; | |
| 13500 | ||
| 411e1bfb | 13501 | case R_PPC64_DTPMOD64: |
| 951fd09b AM |
13502 | if (rel + 1 < relend |
| 13503 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 13504 | && rel[1].r_offset == rel->r_offset + 8) | |
| 411e1bfb | 13505 | { |
| 951fd09b AM |
13506 | if ((tls_mask & TLS_GD) == 0) |
| 13507 | { | |
| 13508 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
| 13509 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 13510 | r_type = R_PPC64_TPREL64; | |
| 13511 | else | |
| 13512 | { | |
| 4ce794b7 | 13513 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 951fd09b AM |
13514 | r_type = R_PPC64_NONE; |
| 13515 | } | |
| 13516 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13517 | } | |
| 13518 | } | |
| 13519 | else | |
| 13520 | { | |
| 13521 | if ((tls_mask & TLS_LD) == 0) | |
| 411e1bfb | 13522 | { |
| 4ce794b7 | 13523 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 411e1bfb | 13524 | r_type = R_PPC64_NONE; |
| 951fd09b | 13525 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb | 13526 | } |
| 411e1bfb AM |
13527 | } |
| 13528 | break; | |
| 13529 | ||
| 13530 | case R_PPC64_TPREL64: | |
| 951fd09b | 13531 | if ((tls_mask & TLS_TPREL) == 0) |
| 411e1bfb AM |
13532 | { |
| 13533 | r_type = R_PPC64_NONE; | |
| 13534 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13535 | } | |
| 13536 | break; | |
| 52a82034 AM |
13537 | |
| 13538 | case R_PPC64_REL16_HA: | |
| 13539 | /* If we are generating a non-PIC executable, edit | |
| 13540 | . 0: addis 2,12,.TOC.-0b@ha | |
| 13541 | . addi 2,2,.TOC.-0b@l | |
| 13542 | used by ELFv2 global entry points to set up r2, to | |
| 13543 | . lis 2,.TOC.@ha | |
| 13544 | . addi 2,2,.TOC.@l | |
| 13545 | if .TOC. is in range. */ | |
| 13546 | if (!info->shared | |
| 13547 | && h != NULL && &h->elf == htab->elf.hgot | |
| 13548 | && rel + 1 < relend | |
| 13549 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
| 13550 | && rel[1].r_offset == rel->r_offset + 4 | |
| 13551 | && rel[1].r_addend == rel->r_addend + 4 | |
| 13552 | && relocation + 0x80008000 <= 0xffffffff) | |
| 13553 | { | |
| 13554 | unsigned int insn1, insn2; | |
| 13555 | bfd_vma offset = rel->r_offset - d_offset; | |
| 13556 | insn1 = bfd_get_32 (output_bfd, contents + offset); | |
| 13557 | insn2 = bfd_get_32 (output_bfd, contents + offset + 4); | |
| 13558 | if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */ | |
| 13559 | && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */) | |
| 13560 | { | |
| 13561 | r_type = R_PPC64_ADDR16_HA; | |
| 13562 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13563 | rel->r_addend -= d_offset; | |
| 13564 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
| 13565 | rel[1].r_addend -= d_offset + 4; | |
| 13566 | bfd_put_32 (output_bfd, 0x3c400000, contents + offset); | |
| 13567 | } | |
| 13568 | } | |
| 13569 | break; | |
| 411e1bfb AM |
13570 | } |
| 13571 | ||
| 13572 | /* Handle other relocations that tweak non-addend part of insn. */ | |
| 86c76c7b | 13573 | insn = 0; |
| b25116a9 AM |
13574 | max_br_offset = 1 << 25; |
| 13575 | addend = rel->r_addend; | |
| bc30df16 | 13576 | reloc_dest = DEST_NORMAL; |
| 65f38f15 | 13577 | switch (r_type) |
| 5bd4f169 AM |
13578 | { |
| 13579 | default: | |
| 65f38f15 | 13580 | break; |
| 5bd4f169 | 13581 | |
| 3b421ab3 AM |
13582 | case R_PPC64_TOCSAVE: |
| 13583 | if (relocation + addend == (rel->r_offset | |
| 13584 | + input_section->output_offset | |
| 13585 | + input_section->output_section->vma) | |
| 13586 | && tocsave_find (htab, NO_INSERT, | |
| 13587 | &local_syms, rel, input_bfd)) | |
| 13588 | { | |
| 13589 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
| 13590 | if (insn == NOP | |
| 13591 | || insn == CROR_151515 || insn == CROR_313131) | |
| a078d95a AM |
13592 | bfd_put_32 (input_bfd, |
| 13593 | STD_R2_0R1 + STK_TOC (htab), | |
| 3b421ab3 AM |
13594 | contents + rel->r_offset); |
| 13595 | } | |
| 13596 | break; | |
| 13597 | ||
| 65f38f15 AM |
13598 | /* Branch taken prediction relocations. */ |
| 13599 | case R_PPC64_ADDR14_BRTAKEN: | |
| 13600 | case R_PPC64_REL14_BRTAKEN: | |
| cedb70c5 KH |
13601 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 13602 | /* Fall thru. */ | |
| 65f38f15 | 13603 | |
| 86c76c7b | 13604 | /* Branch not taken prediction relocations. */ |
| 65f38f15 AM |
13605 | case R_PPC64_ADDR14_BRNTAKEN: |
| 13606 | case R_PPC64_REL14_BRNTAKEN: | |
| 411e1bfb AM |
13607 | insn |= bfd_get_32 (output_bfd, |
| 13608 | contents + rel->r_offset) & ~(0x01 << 21); | |
| b25116a9 | 13609 | /* Fall thru. */ |
| 86c76c7b | 13610 | |
| b25116a9 AM |
13611 | case R_PPC64_REL14: |
| 13612 | max_br_offset = 1 << 15; | |
| 13613 | /* Fall thru. */ | |
| 5bd4f169 | 13614 | |
| 65f38f15 | 13615 | case R_PPC64_REL24: |
| ad8e1ba5 AM |
13616 | /* Calls to functions with a different TOC, such as calls to |
| 13617 | shared objects, need to alter the TOC pointer. This is | |
| 13618 | done using a linkage stub. A REL24 branching to these | |
| 13619 | linkage stubs needs to be followed by a nop, as the nop | |
| 13620 | will be replaced with an instruction to restore the TOC | |
| 13621 | base pointer. */ | |
| 8387904d | 13622 | fdh = h; |
| b31867b6 AM |
13623 | if (h != NULL |
| 13624 | && h->oh != NULL | |
| 13625 | && h->oh->is_func_descriptor) | |
| 13626 | fdh = ppc_follow_link (h->oh); | |
| 31c76678 DK |
13627 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
| 13628 | htab); | |
| 6abec6bc | 13629 | if (stub_entry != NULL |
| ad8e1ba5 | 13630 | && (stub_entry->stub_type == ppc_stub_plt_call |
| 794e51c0 | 13631 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
| ad8e1ba5 AM |
13632 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
| 13633 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
| 41bd81ab | 13634 | { |
| b25116a9 | 13635 | bfd_boolean can_plt_call = FALSE; |
| 721956f4 | 13636 | |
| ba8ca3e7 AM |
13637 | /* All of these stubs will modify r2, so there must be a |
| 13638 | branch and link followed by a nop. The nop is | |
| 13639 | replaced by an insn to restore r2. */ | |
| eea6121a | 13640 | if (rel->r_offset + 8 <= input_section->size) |
| 41bd81ab | 13641 | { |
| ba8ca3e7 AM |
13642 | unsigned long br; |
| 13643 | ||
| 13644 | br = bfd_get_32 (input_bfd, | |
| 13645 | contents + rel->r_offset); | |
| 13646 | if ((br & 1) != 0) | |
| 41bd81ab | 13647 | { |
| ba8ca3e7 AM |
13648 | unsigned long nop; |
| 13649 | ||
| 13650 | nop = bfd_get_32 (input_bfd, | |
| 13651 | contents + rel->r_offset + 4); | |
| 13652 | if (nop == NOP | |
| 13653 | || nop == CROR_151515 || nop == CROR_313131) | |
| a7f2871e | 13654 | { |
| ba8ca3e7 AM |
13655 | if (h != NULL |
| 13656 | && (h == htab->tls_get_addr_fd | |
| 13657 | || h == htab->tls_get_addr) | |
| e7d1c40c | 13658 | && !htab->params->no_tls_get_addr_opt) |
| ba8ca3e7 AM |
13659 | { |
| 13660 | /* Special stub used, leave nop alone. */ | |
| 13661 | } | |
| 13662 | else | |
| a078d95a AM |
13663 | bfd_put_32 (input_bfd, |
| 13664 | LD_R2_0R1 + STK_TOC (htab), | |
| ba8ca3e7 AM |
13665 | contents + rel->r_offset + 4); |
| 13666 | can_plt_call = TRUE; | |
| a7f2871e | 13667 | } |
| 41bd81ab | 13668 | } |
| 5bd4f169 | 13669 | } |
| 721956f4 | 13670 | |
| ba8ca3e7 | 13671 | if (!can_plt_call && h != NULL) |
| 721956f4 | 13672 | { |
| ba8ca3e7 AM |
13673 | const char *name = h->elf.root.root.string; |
| 13674 | ||
| 13675 | if (*name == '.') | |
| 13676 | ++name; | |
| 13677 | ||
| 13678 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
| 13679 | && (name[17] == 0 || name[17] == '@')) | |
| 6ab189d5 | 13680 | { |
| ba8ca3e7 AM |
13681 | /* Allow crt1 branch to go via a toc adjusting |
| 13682 | stub. Other calls that never return could do | |
| 13683 | the same, if we could detect such. */ | |
| b25116a9 | 13684 | can_plt_call = TRUE; |
| 6ab189d5 | 13685 | } |
| ba8ca3e7 AM |
13686 | } |
| 13687 | ||
| 13688 | if (!can_plt_call) | |
| 13689 | { | |
| 13690 | /* g++ as of 20130507 emits self-calls without a | |
| 13691 | following nop. This is arguably wrong since we | |
| 13692 | have conflicting information. On the one hand a | |
| 13693 | global symbol and on the other a local call | |
| 13694 | sequence, but don't error for this special case. | |
| 13695 | It isn't possible to cheaply verify we have | |
| 13696 | exactly such a call. Allow all calls to the same | |
| 13697 | section. */ | |
| 13698 | asection *code_sec = sec; | |
| 13699 | ||
| 13700 | if (get_opd_info (sec) != NULL) | |
| ad8e1ba5 | 13701 | { |
| ba8ca3e7 AM |
13702 | bfd_vma off = (relocation + addend |
| 13703 | - sec->output_section->vma | |
| 13704 | - sec->output_offset); | |
| bc30df16 | 13705 | |
| ba8ca3e7 | 13706 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
| ad8e1ba5 | 13707 | } |
| ba8ca3e7 AM |
13708 | if (code_sec == input_section) |
| 13709 | can_plt_call = TRUE; | |
| 13710 | } | |
| 13711 | ||
| 13712 | if (!can_plt_call) | |
| 13713 | { | |
| 13714 | info->callbacks->einfo | |
| 13715 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
| 1a1fb627 | 13716 | "recompile with -fPIC\n"), |
| ba8ca3e7 AM |
13717 | input_bfd, input_section, rel->r_offset, sym_name); |
| 13718 | ||
| 13719 | bfd_set_error (bfd_error_bad_value); | |
| 13720 | ret = FALSE; | |
| 721956f4 AM |
13721 | } |
| 13722 | ||
| b25116a9 | 13723 | if (can_plt_call |
| 794e51c0 AM |
13724 | && (stub_entry->stub_type == ppc_stub_plt_call |
| 13725 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
| b25116a9 AM |
13726 | unresolved_reloc = FALSE; |
| 13727 | } | |
| 13728 | ||
| 6abec6bc AM |
13729 | if ((stub_entry == NULL |
| 13730 | || stub_entry->stub_type == ppc_stub_long_branch | |
| 13731 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
| 8387904d AM |
13732 | && get_opd_info (sec) != NULL) |
| 13733 | { | |
| 13734 | /* The branch destination is the value of the opd entry. */ | |
| 4cc603a5 AM |
13735 | bfd_vma off = (relocation + addend |
| 13736 | - sec->output_section->vma | |
| 13737 | - sec->output_offset); | |
| aef36ac1 | 13738 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
| 8387904d AM |
13739 | if (dest != (bfd_vma) -1) |
| 13740 | { | |
| 13741 | relocation = dest; | |
| 13742 | addend = 0; | |
| bc30df16 | 13743 | reloc_dest = DEST_OPD; |
| 8387904d AM |
13744 | } |
| 13745 | } | |
| 13746 | ||
| b25116a9 AM |
13747 | /* If the branch is out of reach we ought to have a long |
| 13748 | branch stub. */ | |
| 13749 | from = (rel->r_offset | |
| 13750 | + input_section->output_offset | |
| 13751 | + input_section->output_section->vma); | |
| 13752 | ||
| 6911b7dc AM |
13753 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
| 13754 | ? fdh->elf.other | |
| 13755 | : sym->st_other); | |
| 13756 | ||
| 6abec6bc AM |
13757 | if (stub_entry != NULL |
| 13758 | && (stub_entry->stub_type == ppc_stub_long_branch | |
| 13759 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
| 13760 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
| 13761 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
| 13762 | || (relocation + addend - from + max_br_offset | |
| 13763 | < 2 * max_br_offset))) | |
| 13764 | /* Don't use the stub if this branch is in range. */ | |
| 13765 | stub_entry = NULL; | |
| b25116a9 AM |
13766 | |
| 13767 | if (stub_entry != NULL) | |
| 13768 | { | |
| 13769 | /* Munge up the value and addend so that we call the stub | |
| 13770 | rather than the procedure directly. */ | |
| 13771 | relocation = (stub_entry->stub_offset | |
| 13772 | + stub_entry->stub_sec->output_offset | |
| 13773 | + stub_entry->stub_sec->output_section->vma); | |
| 13774 | addend = 0; | |
| bc30df16 | 13775 | reloc_dest = DEST_STUB; |
| 3b421ab3 | 13776 | |
| 794e51c0 AM |
13777 | if ((stub_entry->stub_type == ppc_stub_plt_call |
| 13778 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 13779 | && (ALWAYS_EMIT_R2SAVE | |
| 13780 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 3b421ab3 AM |
13781 | && rel + 1 < relend |
| 13782 | && rel[1].r_offset == rel->r_offset + 4 | |
| 13783 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
| 13784 | relocation += 4; | |
| b25116a9 AM |
13785 | } |
| 13786 | ||
| 13787 | if (insn != 0) | |
| 13788 | { | |
| 794e51c0 | 13789 | if (is_isa_v2) |
| 721956f4 | 13790 | { |
| b25116a9 AM |
13791 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 13792 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 13793 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 13794 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 13795 | insn |= 0x02 << 21; | |
| 13796 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 13797 | insn |= 0x08 << 21; | |
| 13798 | else | |
| 13799 | break; | |
| 13800 | } | |
| 13801 | else | |
| 13802 | { | |
| 13803 | /* Invert 'y' bit if not the default. */ | |
| 4cc603a5 | 13804 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
| b25116a9 | 13805 | insn ^= 0x01 << 21; |
| 721956f4 | 13806 | } |
| b25116a9 AM |
13807 | |
| 13808 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
| 5bd4f169 | 13809 | } |
| e86ce104 | 13810 | |
| 06da1e8e AM |
13811 | /* NOP out calls to undefined weak functions. |
| 13812 | We can thus call a weak function without first | |
| 13813 | checking whether the function is defined. */ | |
| b25116a9 | 13814 | else if (h != NULL |
| 039b3fef | 13815 | && h->elf.root.type == bfd_link_hash_undefweak |
| 766bc656 | 13816 | && h->elf.dynindx == -1 |
| b25116a9 AM |
13817 | && r_type == R_PPC64_REL24 |
| 13818 | && relocation == 0 | |
| 4cc603a5 | 13819 | && addend == 0) |
| e86ce104 | 13820 | { |
| 06da1e8e AM |
13821 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
| 13822 | continue; | |
| e86ce104 | 13823 | } |
| 65f38f15 AM |
13824 | break; |
| 13825 | } | |
| 5bd4f169 | 13826 | |
| 65f38f15 | 13827 | /* Set `addend'. */ |
| 411e1bfb | 13828 | tls_type = 0; |
| 65f38f15 AM |
13829 | switch (r_type) |
| 13830 | { | |
| 13831 | default: | |
| 25f53a85 | 13832 | info->callbacks->einfo |
| bc30df16 | 13833 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
| d003868e | 13834 | input_bfd, (int) r_type, sym_name); |
| 5bd4f169 | 13835 | |
| 65f38f15 | 13836 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 13837 | ret = FALSE; |
| 65f38f15 | 13838 | continue; |
| 5bd4f169 | 13839 | |
| 65f38f15 | 13840 | case R_PPC64_NONE: |
| 411e1bfb | 13841 | case R_PPC64_TLS: |
| 727fc41e AM |
13842 | case R_PPC64_TLSGD: |
| 13843 | case R_PPC64_TLSLD: | |
| 3b421ab3 | 13844 | case R_PPC64_TOCSAVE: |
| 04c9666a AM |
13845 | case R_PPC64_GNU_VTINHERIT: |
| 13846 | case R_PPC64_GNU_VTENTRY: | |
| 65f38f15 | 13847 | continue; |
| 5bd4f169 AM |
13848 | |
| 13849 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
| 13850 | address in the GOT as relocation value instead of the | |
| 411e1bfb | 13851 | symbol's value itself. Also, create a GOT entry for the |
| 5bd4f169 | 13852 | symbol and put the symbol value there. */ |
| 411e1bfb AM |
13853 | case R_PPC64_GOT_TLSGD16: |
| 13854 | case R_PPC64_GOT_TLSGD16_LO: | |
| 13855 | case R_PPC64_GOT_TLSGD16_HI: | |
| 13856 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 13857 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
13858 | goto dogot; |
| 13859 | ||
| 13860 | case R_PPC64_GOT_TLSLD16: | |
| 13861 | case R_PPC64_GOT_TLSLD16_LO: | |
| 13862 | case R_PPC64_GOT_TLSLD16_HI: | |
| 13863 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 13864 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
13865 | goto dogot; |
| 13866 | ||
| 13867 | case R_PPC64_GOT_TPREL16_DS: | |
| 13868 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 13869 | case R_PPC64_GOT_TPREL16_HI: | |
| 13870 | case R_PPC64_GOT_TPREL16_HA: | |
| 13871 | tls_type = TLS_TLS | TLS_TPREL; | |
| 13872 | goto dogot; | |
| 13873 | ||
| 13874 | case R_PPC64_GOT_DTPREL16_DS: | |
| 13875 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 13876 | case R_PPC64_GOT_DTPREL16_HI: | |
| 13877 | case R_PPC64_GOT_DTPREL16_HA: | |
| 13878 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 13879 | goto dogot; | |
| 13880 | ||
| 65f38f15 AM |
13881 | case R_PPC64_GOT16: |
| 13882 | case R_PPC64_GOT16_LO: | |
| 13883 | case R_PPC64_GOT16_HI: | |
| 13884 | case R_PPC64_GOT16_HA: | |
| 13885 | case R_PPC64_GOT16_DS: | |
| 13886 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb | 13887 | dogot: |
| 5bd4f169 AM |
13888 | { |
| 13889 | /* Relocation is to the entry for this symbol in the global | |
| 13890 | offset table. */ | |
| e717da7e | 13891 | asection *got; |
| d881513a | 13892 | bfd_vma *offp; |
| 5bd4f169 | 13893 | bfd_vma off; |
| d881513a | 13894 | unsigned long indx = 0; |
| 927be08e | 13895 | struct got_entry *ent; |
| 65f38f15 | 13896 | |
| d881513a AM |
13897 | if (tls_type == (TLS_TLS | TLS_LD) |
| 13898 | && (h == NULL | |
| f5385ebf | 13899 | || !h->elf.def_dynamic)) |
| 927be08e | 13900 | ent = ppc64_tlsld_got (input_bfd); |
| 411e1bfb | 13901 | else |
| 5bd4f169 | 13902 | { |
| 5bd4f169 | 13903 | |
| d881513a AM |
13904 | if (h != NULL) |
| 13905 | { | |
| 13906 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
| 039b3fef AM |
13907 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
| 13908 | &h->elf) | |
| d881513a | 13909 | || (info->shared |
| afe397ea | 13910 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
| d881513a AM |
13911 | /* This is actually a static link, or it is a |
| 13912 | -Bsymbolic link and the symbol is defined | |
| 13913 | locally, or the symbol was forced to be local | |
| 13914 | because of a version file. */ | |
| 13915 | ; | |
| 13916 | else | |
| 13917 | { | |
| 14acf4dc | 13918 | BFD_ASSERT (h->elf.dynindx != -1); |
| 039b3fef | 13919 | indx = h->elf.dynindx; |
| d881513a AM |
13920 | unresolved_reloc = FALSE; |
| 13921 | } | |
| 039b3fef | 13922 | ent = h->elf.got.glist; |
| d881513a | 13923 | } |
| 411e1bfb | 13924 | else |
| 5bd4f169 | 13925 | { |
| d881513a AM |
13926 | if (local_got_ents == NULL) |
| 13927 | abort (); | |
| 13928 | ent = local_got_ents[r_symndx]; | |
| 5bd4f169 | 13929 | } |
| d881513a AM |
13930 | |
| 13931 | for (; ent != NULL; ent = ent->next) | |
| 31c76678 | 13932 | if (ent->addend == orig_rel.r_addend |
| e717da7e | 13933 | && ent->owner == input_bfd |
| d881513a AM |
13934 | && ent->tls_type == tls_type) |
| 13935 | break; | |
| 5bd4f169 | 13936 | } |
| 411e1bfb | 13937 | |
| 927be08e AM |
13938 | if (ent == NULL) |
| 13939 | abort (); | |
| 13940 | if (ent->is_indirect) | |
| 13941 | ent = ent->got.ent; | |
| 13942 | offp = &ent->got.offset; | |
| 13943 | got = ppc64_elf_tdata (ent->owner)->got; | |
| e717da7e AM |
13944 | if (got == NULL) |
| 13945 | abort (); | |
| 13946 | ||
| 411e1bfb AM |
13947 | /* The offset must always be a multiple of 8. We use the |
| 13948 | least significant bit to record whether we have already | |
| 13949 | processed this entry. */ | |
| d881513a | 13950 | off = *offp; |
| 411e1bfb AM |
13951 | if ((off & 1) != 0) |
| 13952 | off &= ~1; | |
| 5bd4f169 AM |
13953 | else |
| 13954 | { | |
| 411e1bfb AM |
13955 | /* Generate relocs for the dynamic linker, except in |
| 13956 | the case of TLSLD where we'll use one entry per | |
| 13957 | module. */ | |
| 25f23106 AM |
13958 | asection *relgot; |
| 13959 | bfd_boolean ifunc; | |
| e717da7e | 13960 | |
| d881513a | 13961 | *offp = off | 1; |
| 25f23106 AM |
13962 | relgot = NULL; |
| 13963 | ifunc = (h != NULL | |
| 13964 | ? h->elf.type == STT_GNU_IFUNC | |
| 13965 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
| 19e08130 | 13966 | if (ifunc) |
| 33e44f2e | 13967 | relgot = htab->elf.irelplt; |
| 19e08130 AM |
13968 | else if ((info->shared || indx != 0) |
| 13969 | && (h == NULL | |
| 13970 | || (tls_type == (TLS_TLS | TLS_LD) | |
| 13971 | && !h->elf.def_dynamic) | |
| 13972 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
| 13973 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
| 13974 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
| 25f23106 | 13975 | if (relgot != NULL) |
| 5bd4f169 | 13976 | { |
| e717da7e AM |
13977 | outrel.r_offset = (got->output_section->vma |
| 13978 | + got->output_offset | |
| 411e1bfb | 13979 | + off); |
| 4cc603a5 | 13980 | outrel.r_addend = addend; |
| d881513a | 13981 | if (tls_type & (TLS_LD | TLS_GD)) |
| 5bd4f169 | 13982 | { |
| 411e1bfb | 13983 | outrel.r_addend = 0; |
| e515b051 | 13984 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
| d881513a AM |
13985 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 13986 | { | |
| e717da7e AM |
13987 | loc = relgot->contents; |
| 13988 | loc += (relgot->reloc_count++ | |
| d881513a AM |
13989 | * sizeof (Elf64_External_Rela)); |
| 13990 | bfd_elf64_swap_reloca_out (output_bfd, | |
| 13991 | &outrel, loc); | |
| e515b051 | 13992 | outrel.r_offset += 8; |
| 4cc603a5 | 13993 | outrel.r_addend = addend; |
| d881513a AM |
13994 | outrel.r_info |
| 13995 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
| d881513a | 13996 | } |
| 411e1bfb | 13997 | } |
| 951fd09b | 13998 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
| 411e1bfb | 13999 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
| 951fd09b | 14000 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
| 411e1bfb | 14001 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
| 25f23106 AM |
14002 | else if (indx != 0) |
| 14003 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
| 14004 | else | |
| 81407a69 | 14005 | { |
| 25f23106 AM |
14006 | if (ifunc) |
| 14007 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| 14008 | else | |
| 14009 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 81407a69 AM |
14010 | |
| 14011 | /* Write the .got section contents for the sake | |
| 14012 | of prelink. */ | |
| e717da7e | 14013 | loc = got->contents + off; |
| 23fbd6fa JJ |
14014 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
| 14015 | loc); | |
| 81407a69 | 14016 | } |
| 81407a69 AM |
14017 | |
| 14018 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
| e515b051 AM |
14019 | { |
| 14020 | outrel.r_addend += relocation; | |
| 14021 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
| e1918d23 | 14022 | outrel.r_addend -= htab->elf.tls_sec->vma; |
| e515b051 | 14023 | } |
| e717da7e AM |
14024 | loc = relgot->contents; |
| 14025 | loc += (relgot->reloc_count++ | |
| 411e1bfb AM |
14026 | * sizeof (Elf64_External_Rela)); |
| 14027 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
| 14028 | } | |
| 14029 | ||
| ad8e1ba5 | 14030 | /* Init the .got section contents here if we're not |
| 81407a69 | 14031 | emitting a reloc. */ |
| d881513a | 14032 | else |
| 411e1bfb | 14033 | { |
| 4cc603a5 | 14034 | relocation += addend; |
| 7b609f53 AM |
14035 | if (tls_type == (TLS_TLS | TLS_LD)) |
| 14036 | relocation = 1; | |
| 14037 | else if (tls_type != 0) | |
| 411e1bfb | 14038 | { |
| e1918d23 | 14039 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 7b609f53 | 14040 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
| 411e1bfb | 14041 | relocation += DTP_OFFSET - TP_OFFSET; |
| 5bd4f169 | 14042 | |
| 7b609f53 AM |
14043 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 14044 | { | |
| 14045 | bfd_put_64 (output_bfd, relocation, | |
| e717da7e | 14046 | got->contents + off + 8); |
| 7b609f53 AM |
14047 | relocation = 1; |
| 14048 | } | |
| 411e1bfb | 14049 | } |
| 7b609f53 | 14050 | |
| 411e1bfb | 14051 | bfd_put_64 (output_bfd, relocation, |
| e717da7e | 14052 | got->contents + off); |
| 5bd4f169 AM |
14053 | } |
| 14054 | } | |
| 14055 | ||
| 65f38f15 AM |
14056 | if (off >= (bfd_vma) -2) |
| 14057 | abort (); | |
| 14058 | ||
| bf102f86 AM |
14059 | relocation = got->output_section->vma + got->output_offset + off; |
| 14060 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
| 5bd4f169 | 14061 | } |
| 65f38f15 AM |
14062 | break; |
| 14063 | ||
| 14064 | case R_PPC64_PLT16_HA: | |
| 14065 | case R_PPC64_PLT16_HI: | |
| 14066 | case R_PPC64_PLT16_LO: | |
| 14067 | case R_PPC64_PLT32: | |
| 14068 | case R_PPC64_PLT64: | |
| 14069 | /* Relocation is to the entry for this symbol in the | |
| 14070 | procedure linkage table. */ | |
| 14071 | ||
| 14072 | /* Resolve a PLT reloc against a local symbol directly, | |
| 14073 | without using the procedure linkage table. */ | |
| 14074 | if (h == NULL) | |
| 14075 | break; | |
| 14076 | ||
| 411e1bfb AM |
14077 | /* It's possible that we didn't make a PLT entry for this |
| 14078 | symbol. This happens when statically linking PIC code, | |
| 14079 | or when using -Bsymbolic. Go find a match if there is a | |
| 14080 | PLT entry. */ | |
| 33e44f2e | 14081 | if (htab->elf.splt != NULL) |
| 65f38f15 | 14082 | { |
| 411e1bfb | 14083 | struct plt_entry *ent; |
| 039b3fef | 14084 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
| a345bc8d AM |
14085 | if (ent->plt.offset != (bfd_vma) -1 |
| 14086 | && ent->addend == orig_rel.r_addend) | |
| 411e1bfb | 14087 | { |
| 33e44f2e AM |
14088 | relocation = (htab->elf.splt->output_section->vma |
| 14089 | + htab->elf.splt->output_offset | |
| 411e1bfb AM |
14090 | + ent->plt.offset); |
| 14091 | unresolved_reloc = FALSE; | |
| a345bc8d | 14092 | break; |
| 411e1bfb | 14093 | } |
| 65f38f15 | 14094 | } |
| 65f38f15 | 14095 | break; |
| 5bd4f169 | 14096 | |
| 0b13192e AM |
14097 | case R_PPC64_TOC: |
| 14098 | /* Relocation value is TOC base. */ | |
| 14099 | relocation = TOCstart; | |
| cf35638d | 14100 | if (r_symndx == STN_UNDEF) |
| 0b13192e | 14101 | relocation += htab->stub_group[input_section->id].toc_off; |
| 8517fae7 AM |
14102 | else if (unresolved_reloc) |
| 14103 | ; | |
| 14104 | else if (sec != NULL && sec->id <= htab->top_id) | |
| 0b13192e AM |
14105 | relocation += htab->stub_group[sec->id].toc_off; |
| 14106 | else | |
| 14107 | unresolved_reloc = TRUE; | |
| ab96bf03 | 14108 | goto dodyn; |
| 0b13192e | 14109 | |
| 5bd4f169 AM |
14110 | /* TOC16 relocs. We want the offset relative to the TOC base, |
| 14111 | which is the address of the start of the TOC plus 0x8000. | |
| 14112 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
| 14113 | in this order. */ | |
| 65f38f15 AM |
14114 | case R_PPC64_TOC16: |
| 14115 | case R_PPC64_TOC16_LO: | |
| 14116 | case R_PPC64_TOC16_HI: | |
| 14117 | case R_PPC64_TOC16_DS: | |
| 14118 | case R_PPC64_TOC16_LO_DS: | |
| 14119 | case R_PPC64_TOC16_HA: | |
| ad8e1ba5 | 14120 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
| 5bd4f169 AM |
14121 | break; |
| 14122 | ||
| 14123 | /* Relocate against the beginning of the section. */ | |
| 65f38f15 AM |
14124 | case R_PPC64_SECTOFF: |
| 14125 | case R_PPC64_SECTOFF_LO: | |
| 14126 | case R_PPC64_SECTOFF_HI: | |
| 14127 | case R_PPC64_SECTOFF_DS: | |
| 14128 | case R_PPC64_SECTOFF_LO_DS: | |
| 14129 | case R_PPC64_SECTOFF_HA: | |
| 4ce794b7 | 14130 | if (sec != NULL) |
| 65f38f15 | 14131 | addend -= sec->output_section->vma; |
| 5bd4f169 AM |
14132 | break; |
| 14133 | ||
| 25f23106 AM |
14134 | case R_PPC64_REL16: |
| 14135 | case R_PPC64_REL16_LO: | |
| 14136 | case R_PPC64_REL16_HI: | |
| 14137 | case R_PPC64_REL16_HA: | |
| 14138 | break; | |
| 14139 | ||
| 721956f4 AM |
14140 | case R_PPC64_REL14: |
| 14141 | case R_PPC64_REL14_BRNTAKEN: | |
| 14142 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 AM |
14143 | case R_PPC64_REL24: |
| 14144 | break; | |
| 14145 | ||
| 411e1bfb AM |
14146 | case R_PPC64_TPREL16: |
| 14147 | case R_PPC64_TPREL16_LO: | |
| 14148 | case R_PPC64_TPREL16_HI: | |
| 14149 | case R_PPC64_TPREL16_HA: | |
| 14150 | case R_PPC64_TPREL16_DS: | |
| 14151 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
14152 | case R_PPC64_TPREL16_HIGH: |
| 14153 | case R_PPC64_TPREL16_HIGHA: | |
| 411e1bfb AM |
14154 | case R_PPC64_TPREL16_HIGHER: |
| 14155 | case R_PPC64_TPREL16_HIGHERA: | |
| 14156 | case R_PPC64_TPREL16_HIGHEST: | |
| 14157 | case R_PPC64_TPREL16_HIGHESTA: | |
| 766bc656 AM |
14158 | if (h != NULL |
| 14159 | && h->elf.root.type == bfd_link_hash_undefweak | |
| 14160 | && h->elf.dynindx == -1) | |
| 14161 | { | |
| 14162 | /* Make this relocation against an undefined weak symbol | |
| 14163 | resolve to zero. This is really just a tweak, since | |
| 14164 | code using weak externs ought to check that they are | |
| 14165 | defined before using them. */ | |
| 14166 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
| 14167 | ||
| 14168 | insn = bfd_get_32 (output_bfd, p); | |
| 14169 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
| 14170 | if (insn != 0) | |
| 14171 | bfd_put_32 (output_bfd, insn, p); | |
| 14172 | break; | |
| 14173 | } | |
| e1918d23 | 14174 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
| 411e1bfb AM |
14175 | if (info->shared) |
| 14176 | /* The TPREL16 relocs shouldn't really be used in shared | |
| 14177 | libs as they will result in DT_TEXTREL being set, but | |
| 14178 | support them anyway. */ | |
| 14179 | goto dodyn; | |
| 14180 | break; | |
| 14181 | ||
| 14182 | case R_PPC64_DTPREL16: | |
| 14183 | case R_PPC64_DTPREL16_LO: | |
| 14184 | case R_PPC64_DTPREL16_HI: | |
| 14185 | case R_PPC64_DTPREL16_HA: | |
| 14186 | case R_PPC64_DTPREL16_DS: | |
| 14187 | case R_PPC64_DTPREL16_LO_DS: | |
| f9c6b907 AM |
14188 | case R_PPC64_DTPREL16_HIGH: |
| 14189 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb AM |
14190 | case R_PPC64_DTPREL16_HIGHER: |
| 14191 | case R_PPC64_DTPREL16_HIGHERA: | |
| 14192 | case R_PPC64_DTPREL16_HIGHEST: | |
| 14193 | case R_PPC64_DTPREL16_HIGHESTA: | |
| e1918d23 | 14194 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 411e1bfb AM |
14195 | break; |
| 14196 | ||
| 45965137 AM |
14197 | case R_PPC64_ADDR64_LOCAL: |
| 14198 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
| 14199 | ? h->elf.other | |
| 14200 | : sym->st_other); | |
| 14201 | break; | |
| 14202 | ||
| e515b051 AM |
14203 | case R_PPC64_DTPMOD64: |
| 14204 | relocation = 1; | |
| 14205 | addend = 0; | |
| 14206 | goto dodyn; | |
| 14207 | ||
| 411e1bfb | 14208 | case R_PPC64_TPREL64: |
| e1918d23 | 14209 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
| 411e1bfb AM |
14210 | goto dodyn; |
| 14211 | ||
| 14212 | case R_PPC64_DTPREL64: | |
| e1918d23 | 14213 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 411e1bfb AM |
14214 | /* Fall thru */ |
| 14215 | ||
| 65f38f15 AM |
14216 | /* Relocations that may need to be propagated if this is a |
| 14217 | dynamic object. */ | |
| 04c9666a | 14218 | case R_PPC64_REL30: |
| 65f38f15 AM |
14219 | case R_PPC64_REL32: |
| 14220 | case R_PPC64_REL64: | |
| 14221 | case R_PPC64_ADDR14: | |
| 14222 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 14223 | case R_PPC64_ADDR14_BRTAKEN: | |
| 14224 | case R_PPC64_ADDR16: | |
| 14225 | case R_PPC64_ADDR16_DS: | |
| 14226 | case R_PPC64_ADDR16_HA: | |
| 14227 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
14228 | case R_PPC64_ADDR16_HIGH: |
| 14229 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
14230 | case R_PPC64_ADDR16_HIGHER: |
| 14231 | case R_PPC64_ADDR16_HIGHERA: | |
| 14232 | case R_PPC64_ADDR16_HIGHEST: | |
| 14233 | case R_PPC64_ADDR16_HIGHESTA: | |
| 14234 | case R_PPC64_ADDR16_LO: | |
| 14235 | case R_PPC64_ADDR16_LO_DS: | |
| 14236 | case R_PPC64_ADDR24: | |
| 65f38f15 AM |
14237 | case R_PPC64_ADDR32: |
| 14238 | case R_PPC64_ADDR64: | |
| 14239 | case R_PPC64_UADDR16: | |
| 14240 | case R_PPC64_UADDR32: | |
| 14241 | case R_PPC64_UADDR64: | |
| 411e1bfb | 14242 | dodyn: |
| 5d1634d7 | 14243 | if ((input_section->flags & SEC_ALLOC) == 0) |
| ec338859 AM |
14244 | break; |
| 14245 | ||
| 41bd81ab AM |
14246 | if (NO_OPD_RELOCS && is_opd) |
| 14247 | break; | |
| 14248 | ||
| 65f38f15 | 14249 | if ((info->shared |
| 4e795f50 | 14250 | && (h == NULL |
| 039b3fef AM |
14251 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
| 14252 | || h->elf.root.type != bfd_link_hash_undefweak) | |
| 1d483afe | 14253 | && (must_be_dyn_reloc (info, r_type) |
| 039b3fef | 14254 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
| f4656909 AM |
14255 | || (ELIMINATE_COPY_RELOCS |
| 14256 | && !info->shared | |
| 65f38f15 | 14257 | && h != NULL |
| 039b3fef | 14258 | && h->elf.dynindx != -1 |
| f5385ebf | 14259 | && !h->elf.non_got_ref |
| 25f23106 AM |
14260 | && !h->elf.def_regular) |
| 14261 | || (!info->shared | |
| 14262 | && (h != NULL | |
| 14263 | ? h->elf.type == STT_GNU_IFUNC | |
| 14264 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
| 65f38f15 | 14265 | { |
| b34976b6 | 14266 | bfd_boolean skip, relocate; |
| 65f38f15 | 14267 | asection *sreloc; |
| 1cf1f670 | 14268 | bfd_vma out_off; |
| 65f38f15 AM |
14269 | |
| 14270 | /* When generating a dynamic object, these relocations | |
| 14271 | are copied into the output file to be resolved at run | |
| 14272 | time. */ | |
| 14273 | ||
| b34976b6 AM |
14274 | skip = FALSE; |
| 14275 | relocate = FALSE; | |
| 65f38f15 | 14276 | |
| 1cf1f670 AM |
14277 | out_off = _bfd_elf_section_offset (output_bfd, info, |
| 14278 | input_section, rel->r_offset); | |
| 14279 | if (out_off == (bfd_vma) -1) | |
| b34976b6 | 14280 | skip = TRUE; |
| 1cf1f670 | 14281 | else if (out_off == (bfd_vma) -2) |
| b34976b6 | 14282 | skip = TRUE, relocate = TRUE; |
| 1cf1f670 AM |
14283 | out_off += (input_section->output_section->vma |
| 14284 | + input_section->output_offset); | |
| 14285 | outrel.r_offset = out_off; | |
| 411e1bfb | 14286 | outrel.r_addend = rel->r_addend; |
| 65f38f15 | 14287 | |
| 1cf1f670 AM |
14288 | /* Optimize unaligned reloc use. */ |
| 14289 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
| 14290 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
| 14291 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
| 14292 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
| 14293 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
| 14294 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
| 14295 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
| 14296 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
| 14297 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
| 14298 | ||
| 65f38f15 | 14299 | if (skip) |
| 0bb2d96a | 14300 | memset (&outrel, 0, sizeof outrel); |
| afe397ea | 14301 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
| 0b13192e AM |
14302 | && !is_opd |
| 14303 | && r_type != R_PPC64_TOC) | |
| 14acf4dc MR |
14304 | { |
| 14305 | BFD_ASSERT (h->elf.dynindx != -1); | |
| 14306 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
| 14307 | } | |
| 65f38f15 AM |
14308 | else |
| 14309 | { | |
| 41bd81ab AM |
14310 | /* This symbol is local, or marked to become local, |
| 14311 | or this is an opd section reloc which must point | |
| 14312 | at a local function. */ | |
| 65f38f15 | 14313 | outrel.r_addend += relocation; |
| e86ce104 | 14314 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
| 65f38f15 | 14315 | { |
| 3fad3c7c | 14316 | if (is_opd && h != NULL) |
| afbe61cf AM |
14317 | { |
| 14318 | /* Lie about opd entries. This case occurs | |
| 14319 | when building shared libraries and we | |
| 14320 | reference a function in another shared | |
| 3fad3c7c AM |
14321 | lib. The same thing happens for a weak |
| 14322 | definition in an application that's | |
| 14323 | overridden by a strong definition in a | |
| 14324 | shared lib. (I believe this is a generic | |
| 14325 | bug in binutils handling of weak syms.) | |
| 14326 | In these cases we won't use the opd | |
| 1e2f5b6e | 14327 | entry in this lib. */ |
| b34976b6 | 14328 | unresolved_reloc = FALSE; |
| afbe61cf | 14329 | } |
| 25f23106 AM |
14330 | if (!is_opd |
| 14331 | && r_type == R_PPC64_ADDR64 | |
| 14332 | && (h != NULL | |
| 14333 | ? h->elf.type == STT_GNU_IFUNC | |
| 14334 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
| 14335 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| 14336 | else | |
| 14337 | { | |
| 14338 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 81407a69 | 14339 | |
| 25f23106 AM |
14340 | /* We need to relocate .opd contents for ld.so. |
| 14341 | Prelink also wants simple and consistent rules | |
| 14342 | for relocs. This make all RELATIVE relocs have | |
| 14343 | *r_offset equal to r_addend. */ | |
| 14344 | relocate = TRUE; | |
| 14345 | } | |
| 65f38f15 AM |
14346 | } |
| 14347 | else | |
| 14348 | { | |
| 14349 | long indx = 0; | |
| 14350 | ||
| 25f23106 AM |
14351 | if (h != NULL |
| 14352 | ? h->elf.type == STT_GNU_IFUNC | |
| 14353 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 14354 | { | |
| 25f53a85 | 14355 | info->callbacks->einfo |
| bc30df16 AM |
14356 | (_("%P: %H: %s for indirect " |
| 14357 | "function `%T' unsupported\n"), | |
| 25f53a85 | 14358 | input_bfd, input_section, rel->r_offset, |
| 25f23106 AM |
14359 | ppc64_elf_howto_table[r_type]->name, |
| 14360 | sym_name); | |
| 14361 | ret = FALSE; | |
| 14362 | } | |
| cf35638d | 14363 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
| 65f38f15 AM |
14364 | ; |
| 14365 | else if (sec == NULL || sec->owner == NULL) | |
| 14366 | { | |
| 14367 | bfd_set_error (bfd_error_bad_value); | |
| b34976b6 | 14368 | return FALSE; |
| 65f38f15 AM |
14369 | } |
| 14370 | else | |
| 14371 | { | |
| 14372 | asection *osec; | |
| 14373 | ||
| 14374 | osec = sec->output_section; | |
| 14375 | indx = elf_section_data (osec)->dynindx; | |
| 14376 | ||
| 74541ad4 AM |
14377 | if (indx == 0) |
| 14378 | { | |
| 14379 | if ((osec->flags & SEC_READONLY) == 0 | |
| 14380 | && htab->elf.data_index_section != NULL) | |
| 14381 | osec = htab->elf.data_index_section; | |
| 14382 | else | |
| 14383 | osec = htab->elf.text_index_section; | |
| 14384 | indx = elf_section_data (osec)->dynindx; | |
| 14385 | } | |
| 14386 | BFD_ASSERT (indx != 0); | |
| 14387 | ||
| 65f38f15 AM |
14388 | /* We are turning this relocation into one |
| 14389 | against a section symbol, so subtract out | |
| 14390 | the output section's address but not the | |
| 14391 | offset of the input section in the output | |
| 14392 | section. */ | |
| 14393 | outrel.r_addend -= osec->vma; | |
| 14394 | } | |
| 14395 | ||
| 14396 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
| 14397 | } | |
| 14398 | } | |
| 14399 | ||
| 14400 | sreloc = elf_section_data (input_section)->sreloc; | |
| 19e08130 AM |
14401 | if (h != NULL |
| 14402 | ? h->elf.type == STT_GNU_IFUNC | |
| 14403 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 33e44f2e | 14404 | sreloc = htab->elf.irelplt; |
| 65f38f15 AM |
14405 | if (sreloc == NULL) |
| 14406 | abort (); | |
| 14407 | ||
| dfbb6ac9 AM |
14408 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
| 14409 | >= sreloc->size) | |
| 14410 | abort (); | |
| 947216bf AM |
14411 | loc = sreloc->contents; |
| 14412 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 AM |
14413 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
| 14414 | ||
| 14415 | /* If this reloc is against an external symbol, it will | |
| 14416 | be computed at runtime, so there's no need to do | |
| 81407a69 AM |
14417 | anything now. However, for the sake of prelink ensure |
| 14418 | that the section contents are a known value. */ | |
| 65f38f15 | 14419 | if (! relocate) |
| 81407a69 AM |
14420 | { |
| 14421 | unresolved_reloc = FALSE; | |
| 14422 | /* The value chosen here is quite arbitrary as ld.so | |
| 14423 | ignores section contents except for the special | |
| 14424 | case of .opd where the contents might be accessed | |
| 14425 | before relocation. Choose zero, as that won't | |
| 14426 | cause reloc overflow. */ | |
| 14427 | relocation = 0; | |
| 14428 | addend = 0; | |
| 14429 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
| 14430 | to improve backward compatibility with older | |
| 14431 | versions of ld. */ | |
| 14432 | if (r_type == R_PPC64_ADDR64) | |
| 14433 | addend = outrel.r_addend; | |
| 14434 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
| 4ce794b7 | 14435 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
| 000732f7 AM |
14436 | addend = (input_section->output_section->vma |
| 14437 | + input_section->output_offset | |
| 14438 | + rel->r_offset); | |
| 81407a69 | 14439 | } |
| 65f38f15 | 14440 | } |
| 5bd4f169 AM |
14441 | break; |
| 14442 | ||
| 65f38f15 AM |
14443 | case R_PPC64_COPY: |
| 14444 | case R_PPC64_GLOB_DAT: | |
| 14445 | case R_PPC64_JMP_SLOT: | |
| 25f23106 | 14446 | case R_PPC64_JMP_IREL: |
| 65f38f15 AM |
14447 | case R_PPC64_RELATIVE: |
| 14448 | /* We shouldn't ever see these dynamic relocs in relocatable | |
| 14449 | files. */ | |
| ae9a127f | 14450 | /* Fall through. */ |
| 65f38f15 AM |
14451 | |
| 14452 | case R_PPC64_PLTGOT16: | |
| 14453 | case R_PPC64_PLTGOT16_DS: | |
| 14454 | case R_PPC64_PLTGOT16_HA: | |
| 14455 | case R_PPC64_PLTGOT16_HI: | |
| 14456 | case R_PPC64_PLTGOT16_LO: | |
| 14457 | case R_PPC64_PLTGOT16_LO_DS: | |
| 14458 | case R_PPC64_PLTREL32: | |
| 14459 | case R_PPC64_PLTREL64: | |
| 14460 | /* These ones haven't been implemented yet. */ | |
| 14461 | ||
| 25f53a85 | 14462 | info->callbacks->einfo |
| bc30df16 | 14463 | (_("%P: %B: %s is not supported for `%T'\n"), |
| d003868e | 14464 | input_bfd, |
| 4ce794b7 | 14465 | ppc64_elf_howto_table[r_type]->name, sym_name); |
| 5bd4f169 AM |
14466 | |
| 14467 | bfd_set_error (bfd_error_invalid_operation); | |
| b34976b6 | 14468 | ret = FALSE; |
| 5bd4f169 | 14469 | continue; |
| 65f38f15 | 14470 | } |
| 5bd4f169 | 14471 | |
| 67f0cbdb AM |
14472 | /* Multi-instruction sequences that access the TOC can be |
| 14473 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
| 14474 | to nop; addi rb,r2,x; */ | |
| 14475 | switch (r_type) | |
| 14476 | { | |
| 14477 | default: | |
| 14478 | break; | |
| 14479 | ||
| 14480 | case R_PPC64_GOT_TLSLD16_HI: | |
| 14481 | case R_PPC64_GOT_TLSGD16_HI: | |
| 14482 | case R_PPC64_GOT_TPREL16_HI: | |
| 14483 | case R_PPC64_GOT_DTPREL16_HI: | |
| 14484 | case R_PPC64_GOT16_HI: | |
| 14485 | case R_PPC64_TOC16_HI: | |
| 14486 | /* These relocs would only be useful if building up an | |
| 14487 | offset to later add to r2, perhaps in an indexed | |
| 14488 | addressing mode instruction. Don't try to optimize. | |
| 14489 | Unfortunately, the possibility of someone building up an | |
| 14490 | offset like this or even with the HA relocs, means that | |
| 14491 | we need to check the high insn when optimizing the low | |
| 14492 | insn. */ | |
| 14493 | break; | |
| 14494 | ||
| 14495 | case R_PPC64_GOT_TLSLD16_HA: | |
| 14496 | case R_PPC64_GOT_TLSGD16_HA: | |
| 14497 | case R_PPC64_GOT_TPREL16_HA: | |
| 14498 | case R_PPC64_GOT_DTPREL16_HA: | |
| 14499 | case R_PPC64_GOT16_HA: | |
| 14500 | case R_PPC64_TOC16_HA: | |
| 98528052 | 14501 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
| 560c8763 | 14502 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
| 98528052 AM |
14503 | { |
| 14504 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
| 14505 | bfd_put_32 (input_bfd, NOP, p); | |
| 14506 | } | |
| 67f0cbdb AM |
14507 | break; |
| 14508 | ||
| 14509 | case R_PPC64_GOT_TLSLD16_LO: | |
| 14510 | case R_PPC64_GOT_TLSGD16_LO: | |
| 14511 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 14512 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 14513 | case R_PPC64_GOT16_LO: | |
| 14514 | case R_PPC64_GOT16_LO_DS: | |
| 14515 | case R_PPC64_TOC16_LO: | |
| 14516 | case R_PPC64_TOC16_LO_DS: | |
| 98528052 | 14517 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
| 560c8763 | 14518 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
| 67f0cbdb AM |
14519 | { |
| 14520 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
| 14521 | insn = bfd_get_32 (input_bfd, p); | |
| 560c8763 AM |
14522 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
| 14523 | { | |
| 14524 | /* Transform addic to addi when we change reg. */ | |
| 14525 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
| 14526 | insn |= (14u << 26) | (2 << 16); | |
| 14527 | } | |
| 14528 | else | |
| 67f0cbdb | 14529 | { |
| 98528052 AM |
14530 | insn &= ~(0x1f << 16); |
| 14531 | insn |= 2 << 16; | |
| 67f0cbdb | 14532 | } |
| 560c8763 | 14533 | bfd_put_32 (input_bfd, insn, p); |
| 67f0cbdb AM |
14534 | } |
| 14535 | break; | |
| 14536 | } | |
| 14537 | ||
| 65f38f15 | 14538 | /* Do any further special processing. */ |
| b80eed39 | 14539 | howto = ppc64_elf_howto_table[(int) r_type]; |
| 65f38f15 AM |
14540 | switch (r_type) |
| 14541 | { | |
| 14542 | default: | |
| 14543 | break; | |
| 14544 | ||
| 25f23106 | 14545 | case R_PPC64_REL16_HA: |
| f9c6b907 AM |
14546 | case R_PPC64_ADDR16_HA: |
| 14547 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
14548 | case R_PPC64_ADDR16_HIGHERA: |
| 14549 | case R_PPC64_ADDR16_HIGHESTA: | |
| 65f38f15 AM |
14550 | case R_PPC64_TOC16_HA: |
| 14551 | case R_PPC64_SECTOFF_HA: | |
| 411e1bfb | 14552 | case R_PPC64_TPREL16_HA: |
| f9c6b907 | 14553 | case R_PPC64_TPREL16_HIGHA: |
| 411e1bfb | 14554 | case R_PPC64_TPREL16_HIGHERA: |
| 411e1bfb | 14555 | case R_PPC64_TPREL16_HIGHESTA: |
| f9c6b907 AM |
14556 | case R_PPC64_DTPREL16_HA: |
| 14557 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb | 14558 | case R_PPC64_DTPREL16_HIGHERA: |
| 411e1bfb | 14559 | case R_PPC64_DTPREL16_HIGHESTA: |
| 65f38f15 AM |
14560 | /* It's just possible that this symbol is a weak symbol |
| 14561 | that's not actually defined anywhere. In that case, | |
| 14562 | 'sec' would be NULL, and we should leave the symbol | |
| 14563 | alone (it will be set to zero elsewhere in the link). */ | |
| 5c5f6e17 AM |
14564 | if (sec == NULL) |
| 14565 | break; | |
| 14566 | /* Fall thru */ | |
| 14567 | ||
| 14568 | case R_PPC64_GOT16_HA: | |
| 14569 | case R_PPC64_PLTGOT16_HA: | |
| 14570 | case R_PPC64_PLT16_HA: | |
| 14571 | case R_PPC64_GOT_TLSGD16_HA: | |
| 14572 | case R_PPC64_GOT_TLSLD16_HA: | |
| 14573 | case R_PPC64_GOT_TPREL16_HA: | |
| 14574 | case R_PPC64_GOT_DTPREL16_HA: | |
| 14575 | /* Add 0x10000 if sign bit in 0:15 is set. | |
| 14576 | Bits 0:15 are not used. */ | |
| 14577 | addend += 0x8000; | |
| 65f38f15 AM |
14578 | break; |
| 14579 | ||
| 14580 | case R_PPC64_ADDR16_DS: | |
| 14581 | case R_PPC64_ADDR16_LO_DS: | |
| 14582 | case R_PPC64_GOT16_DS: | |
| 14583 | case R_PPC64_GOT16_LO_DS: | |
| 14584 | case R_PPC64_PLT16_LO_DS: | |
| 14585 | case R_PPC64_SECTOFF_DS: | |
| 14586 | case R_PPC64_SECTOFF_LO_DS: | |
| 14587 | case R_PPC64_TOC16_DS: | |
| 14588 | case R_PPC64_TOC16_LO_DS: | |
| 14589 | case R_PPC64_PLTGOT16_DS: | |
| 14590 | case R_PPC64_PLTGOT16_LO_DS: | |
| 411e1bfb AM |
14591 | case R_PPC64_GOT_TPREL16_DS: |
| 14592 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 14593 | case R_PPC64_GOT_DTPREL16_DS: | |
| 14594 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 14595 | case R_PPC64_TPREL16_DS: | |
| 14596 | case R_PPC64_TPREL16_LO_DS: | |
| 14597 | case R_PPC64_DTPREL16_DS: | |
| 14598 | case R_PPC64_DTPREL16_LO_DS: | |
| adadcc0c AM |
14599 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
| 14600 | mask = 3; | |
| 14601 | /* If this reloc is against an lq insn, then the value must be | |
| 14602 | a multiple of 16. This is somewhat of a hack, but the | |
| 14603 | "correct" way to do this by defining _DQ forms of all the | |
| 14604 | _DS relocs bloats all reloc switches in this file. It | |
| 14605 | doesn't seem to make much sense to use any of these relocs | |
| 14606 | in data, so testing the insn should be safe. */ | |
| 494dac0c | 14607 | if ((insn & (0x3f << 26)) == (56u << 26)) |
| adadcc0c AM |
14608 | mask = 15; |
| 14609 | if (((relocation + addend) & mask) != 0) | |
| 65f38f15 | 14610 | { |
| 25f53a85 | 14611 | info->callbacks->einfo |
| 8de848d8 | 14612 | (_("%P: %H: error: %s not a multiple of %u\n"), |
| 25f53a85 | 14613 | input_bfd, input_section, rel->r_offset, |
| b80eed39 | 14614 | howto->name, |
| adadcc0c | 14615 | mask + 1); |
| 65f38f15 | 14616 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 14617 | ret = FALSE; |
| 65f38f15 AM |
14618 | continue; |
| 14619 | } | |
| 14620 | break; | |
| 5bd4f169 AM |
14621 | } |
| 14622 | ||
| 239e1f3a AM |
14623 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 14624 | because such sections are not SEC_ALLOC and thus ld.so will | |
| 14625 | not process them. */ | |
| 65f38f15 | 14626 | if (unresolved_reloc |
| 239e1f3a | 14627 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
| 1d5316ab AM |
14628 | && h->elf.def_dynamic) |
| 14629 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
| 14630 | rel->r_offset) != (bfd_vma) -1) | |
| 9c07fe7c | 14631 | { |
| 25f53a85 | 14632 | info->callbacks->einfo |
| bc30df16 | 14633 | (_("%P: %H: unresolvable %s against `%T'\n"), |
| 25f53a85 | 14634 | input_bfd, input_section, rel->r_offset, |
| b80eed39 | 14635 | howto->name, |
| 039b3fef | 14636 | h->elf.root.root.string); |
| b34976b6 | 14637 | ret = FALSE; |
| 9c07fe7c | 14638 | } |
| 5bd4f169 | 14639 | |
| b80eed39 AM |
14640 | /* 16-bit fields in insns mostly have signed values, but a |
| 14641 | few insns have 16-bit unsigned values. Really, we should | |
| 14642 | have different reloc types. */ | |
| 14643 | if (howto->complain_on_overflow != complain_overflow_dont | |
| 14644 | && howto->dst_mask == 0xffff | |
| 14645 | && (input_section->flags & SEC_CODE) != 0) | |
| 14646 | { | |
| 14647 | enum complain_overflow complain = complain_overflow_signed; | |
| 14648 | ||
| 14649 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
| a47622ac AM |
14650 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
| 14651 | complain = complain_overflow_bitfield; | |
| 14652 | else if (howto->rightshift == 0 | |
| 14653 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
| 14654 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
| 14655 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
| 14656 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
| 14657 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
| 14658 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
| b80eed39 AM |
14659 | complain = complain_overflow_unsigned; |
| 14660 | if (howto->complain_on_overflow != complain) | |
| 14661 | { | |
| 14662 | alt_howto = *howto; | |
| 14663 | alt_howto.complain_on_overflow = complain; | |
| 14664 | howto = &alt_howto; | |
| 14665 | } | |
| 14666 | } | |
| 14667 | ||
| 14668 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
| 14669 | rel->r_offset, relocation, addend); | |
| 5bd4f169 | 14670 | |
| ef60b7ff | 14671 | if (r != bfd_reloc_ok) |
| 5bd4f169 | 14672 | { |
| bc30df16 | 14673 | char *more_info = NULL; |
| b80eed39 | 14674 | const char *reloc_name = howto->name; |
| bc30df16 AM |
14675 | |
| 14676 | if (reloc_dest != DEST_NORMAL) | |
| 14677 | { | |
| 14678 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
| 14679 | if (more_info != NULL) | |
| 14680 | { | |
| 14681 | strcpy (more_info, reloc_name); | |
| 14682 | strcat (more_info, (reloc_dest == DEST_OPD | |
| 14683 | ? " (OPD)" : " (stub)")); | |
| 14684 | reloc_name = more_info; | |
| 14685 | } | |
| 14686 | } | |
| 14687 | ||
| cd27b276 | 14688 | if (r == bfd_reloc_overflow) |
| 5bd4f169 | 14689 | { |
| cd27b276 AM |
14690 | if (warned) |
| 14691 | continue; | |
| 14692 | if (h != NULL | |
| 039b3fef | 14693 | && h->elf.root.type == bfd_link_hash_undefweak |
| b80eed39 | 14694 | && howto->pc_relative) |
| 5bd4f169 AM |
14695 | { |
| 14696 | /* Assume this is a call protected by other code that | |
| 14697 | detects the symbol is undefined. If this is the case, | |
| 14698 | we can safely ignore the overflow. If not, the | |
| 14699 | program is hosed anyway, and a little warning isn't | |
| 14700 | going to help. */ | |
| 14701 | ||
| 14702 | continue; | |
| 14703 | } | |
| 14704 | ||
| ef60b7ff | 14705 | if (!((*info->callbacks->reloc_overflow) |
| bc30df16 AM |
14706 | (info, &h->elf.root, sym_name, |
| 14707 | reloc_name, orig_rel.r_addend, | |
| 14708 | input_bfd, input_section, rel->r_offset))) | |
| b34976b6 | 14709 | return FALSE; |
| ef60b7ff AM |
14710 | } |
| 14711 | else | |
| 14712 | { | |
| 25f53a85 | 14713 | info->callbacks->einfo |
| bc30df16 | 14714 | (_("%P: %H: %s against `%T': error %d\n"), |
| 25f53a85 | 14715 | input_bfd, input_section, rel->r_offset, |
| bc30df16 | 14716 | reloc_name, sym_name, (int) r); |
| b34976b6 | 14717 | ret = FALSE; |
| ef60b7ff | 14718 | } |
| bc30df16 AM |
14719 | if (more_info != NULL) |
| 14720 | free (more_info); | |
| 5bd4f169 | 14721 | } |
| 5bd4f169 AM |
14722 | } |
| 14723 | ||
| 645ea6a9 AM |
14724 | /* If we're emitting relocations, then shortly after this function |
| 14725 | returns, reloc offsets and addends for this section will be | |
| 14726 | adjusted. Worse, reloc symbol indices will be for the output | |
| 8860955f AM |
14727 | file rather than the input. Save a copy of the relocs for |
| 14728 | opd_entry_value. */ | |
| 4cc603a5 | 14729 | if (is_opd && (info->emitrelocations || info->relocatable)) |
| 8860955f AM |
14730 | { |
| 14731 | bfd_size_type amt; | |
| 14732 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
| 14733 | rel = bfd_alloc (input_bfd, amt); | |
| 729eabd5 AM |
14734 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
| 14735 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
| 8860955f AM |
14736 | if (rel == NULL) |
| 14737 | return FALSE; | |
| 14738 | memcpy (rel, relocs, amt); | |
| 14739 | } | |
| 5bd4f169 AM |
14740 | return ret; |
| 14741 | } | |
| 14742 | ||
| 754021d0 AM |
14743 | /* Adjust the value of any local symbols in opd sections. */ |
| 14744 | ||
| 6e0b88f1 | 14745 | static int |
| 754021d0 AM |
14746 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
| 14747 | const char *name ATTRIBUTE_UNUSED, | |
| 14748 | Elf_Internal_Sym *elfsym, | |
| 14749 | asection *input_sec, | |
| 14750 | struct elf_link_hash_entry *h) | |
| 14751 | { | |
| 74f0fb50 AM |
14752 | struct _opd_sec_data *opd; |
| 14753 | long adjust; | |
| 754021d0 AM |
14754 | bfd_vma value; |
| 14755 | ||
| 4025353c | 14756 | if (h != NULL) |
| 6e0b88f1 | 14757 | return 1; |
| 4025353c | 14758 | |
| 74f0fb50 AM |
14759 | opd = get_opd_info (input_sec); |
| 14760 | if (opd == NULL || opd->adjust == NULL) | |
| 6e0b88f1 | 14761 | return 1; |
| 754021d0 AM |
14762 | |
| 14763 | value = elfsym->st_value - input_sec->output_offset; | |
| 14764 | if (!info->relocatable) | |
| 14765 | value -= input_sec->output_section->vma; | |
| 14766 | ||
| 74f0fb50 | 14767 | adjust = opd->adjust[value / 8]; |
| 4025353c | 14768 | if (adjust == -1) |
| 6e0b88f1 AM |
14769 | return 2; |
| 14770 | ||
| 14771 | elfsym->st_value += adjust; | |
| 14772 | return 1; | |
| 754021d0 AM |
14773 | } |
| 14774 | ||
| 5bd4f169 AM |
14775 | /* Finish up dynamic symbol handling. We set the contents of various |
| 14776 | dynamic sections here. */ | |
| 14777 | ||
| b34976b6 | 14778 | static bfd_boolean |
| 4ce794b7 AM |
14779 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
| 14780 | struct bfd_link_info *info, | |
| 14781 | struct elf_link_hash_entry *h, | |
| ab6dce23 | 14782 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
| 5bd4f169 | 14783 | { |
| 65f38f15 | 14784 | struct ppc_link_hash_table *htab; |
| 8387904d AM |
14785 | struct plt_entry *ent; |
| 14786 | Elf_Internal_Rela rela; | |
| 14787 | bfd_byte *loc; | |
| 5bd4f169 | 14788 | |
| 65f38f15 | 14789 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
14790 | if (htab == NULL) |
| 14791 | return FALSE; | |
| 5bd4f169 | 14792 | |
| 8387904d AM |
14793 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
| 14794 | if (ent->plt.offset != (bfd_vma) -1) | |
| 14795 | { | |
| 14796 | /* This symbol has an entry in the procedure linkage | |
| 14797 | table. Set it up. */ | |
| e054468f AM |
14798 | if (!htab->elf.dynamic_sections_created |
| 14799 | || h->dynindx == -1) | |
| 14800 | { | |
| 14801 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
| 14802 | && h->def_regular | |
| 14803 | && (h->root.type == bfd_link_hash_defined | |
| 14804 | || h->root.type == bfd_link_hash_defweak)); | |
| 33e44f2e AM |
14805 | rela.r_offset = (htab->elf.iplt->output_section->vma |
| 14806 | + htab->elf.iplt->output_offset | |
| 25f23106 | 14807 | + ent->plt.offset); |
| ee67d69a AM |
14808 | if (htab->opd_abi) |
| 14809 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
| 14810 | else | |
| 14811 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| e054468f AM |
14812 | rela.r_addend = (h->root.u.def.value |
| 14813 | + h->root.u.def.section->output_offset | |
| 14814 | + h->root.u.def.section->output_section->vma | |
| 14815 | + ent->addend); | |
| 33e44f2e AM |
14816 | loc = (htab->elf.irelplt->contents |
| 14817 | + (htab->elf.irelplt->reloc_count++ | |
| 25f23106 | 14818 | * sizeof (Elf64_External_Rela))); |
| e054468f AM |
14819 | } |
| 14820 | else | |
| 14821 | { | |
| 33e44f2e AM |
14822 | rela.r_offset = (htab->elf.splt->output_section->vma |
| 14823 | + htab->elf.splt->output_offset | |
| 25f23106 | 14824 | + ent->plt.offset); |
| e054468f AM |
14825 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
| 14826 | rela.r_addend = ent->addend; | |
| 33e44f2e | 14827 | loc = (htab->elf.srelplt->contents |
| b9e5796b AM |
14828 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
| 14829 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
| e054468f | 14830 | } |
| 8387904d | 14831 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| a345bc8d AM |
14832 | |
| 14833 | if (!htab->opd_abi) | |
| 14834 | { | |
| 14835 | if (!h->def_regular) | |
| 14836 | { | |
| 14837 | /* Mark the symbol as undefined, rather than as | |
| 14838 | defined in glink. Leave the value if there were | |
| 14839 | any relocations where pointer equality matters | |
| 14840 | (this is a clue for the dynamic linker, to make | |
| 14841 | function pointer comparisons work between an | |
| 14842 | application and shared library), otherwise set it | |
| 14843 | to zero. */ | |
| 14844 | sym->st_shndx = SHN_UNDEF; | |
| 14845 | if (!h->pointer_equality_needed) | |
| 14846 | sym->st_value = 0; | |
| 14847 | else if (!h->ref_regular_nonweak) | |
| 14848 | { | |
| 14849 | /* This breaks function pointer comparisons, but | |
| 14850 | that is better than breaking tests for a NULL | |
| 14851 | function pointer. */ | |
| 14852 | sym->st_value = 0; | |
| 14853 | } | |
| 14854 | } | |
| 14855 | } | |
| 8387904d | 14856 | } |
| 5bd4f169 | 14857 | |
| f5385ebf | 14858 | if (h->needs_copy) |
| 5bd4f169 | 14859 | { |
| 65f38f15 | 14860 | /* This symbol needs a copy reloc. Set it up. */ |
| 5bd4f169 | 14861 | |
| 65f38f15 AM |
14862 | if (h->dynindx == -1 |
| 14863 | || (h->root.type != bfd_link_hash_defined | |
| 14864 | && h->root.type != bfd_link_hash_defweak) | |
| 4ce794b7 | 14865 | || htab->relbss == NULL) |
| 65f38f15 | 14866 | abort (); |
| 5bd4f169 AM |
14867 | |
| 14868 | rela.r_offset = (h->root.u.def.value | |
| 14869 | + h->root.u.def.section->output_section->vma | |
| 14870 | + h->root.u.def.section->output_offset); | |
| 14871 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
| 14872 | rela.r_addend = 0; | |
| 4ce794b7 AM |
14873 | loc = htab->relbss->contents; |
| 14874 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 | 14875 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| 5bd4f169 AM |
14876 | } |
| 14877 | ||
| b34976b6 | 14878 | return TRUE; |
| 5bd4f169 AM |
14879 | } |
| 14880 | ||
| 65f38f15 AM |
14881 | /* Used to decide how to sort relocs in an optimal manner for the |
| 14882 | dynamic linker, before writing them out. */ | |
| 14883 | ||
| 14884 | static enum elf_reloc_type_class | |
| 7e612e98 AM |
14885 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
| 14886 | const asection *rel_sec, | |
| 14887 | const Elf_Internal_Rela *rela) | |
| 65f38f15 | 14888 | { |
| 04c9666a | 14889 | enum elf_ppc64_reloc_type r_type; |
| 7e612e98 AM |
14890 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 14891 | ||
| 33e44f2e | 14892 | if (rel_sec == htab->elf.irelplt) |
| 7e612e98 | 14893 | return reloc_class_ifunc; |
| a33d1f77 | 14894 | |
| 4ce794b7 | 14895 | r_type = ELF64_R_TYPE (rela->r_info); |
| a33d1f77 | 14896 | switch (r_type) |
| 65f38f15 AM |
14897 | { |
| 14898 | case R_PPC64_RELATIVE: | |
| 14899 | return reloc_class_relative; | |
| 14900 | case R_PPC64_JMP_SLOT: | |
| 14901 | return reloc_class_plt; | |
| 14902 | case R_PPC64_COPY: | |
| 14903 | return reloc_class_copy; | |
| 14904 | default: | |
| 14905 | return reloc_class_normal; | |
| 14906 | } | |
| 14907 | } | |
| 14908 | ||
| 5bd4f169 AM |
14909 | /* Finish up the dynamic sections. */ |
| 14910 | ||
| b34976b6 | 14911 | static bfd_boolean |
| 4ce794b7 AM |
14912 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
| 14913 | struct bfd_link_info *info) | |
| 5bd4f169 | 14914 | { |
| 65f38f15 AM |
14915 | struct ppc_link_hash_table *htab; |
| 14916 | bfd *dynobj; | |
| 5bd4f169 | 14917 | asection *sdyn; |
| 5bd4f169 | 14918 | |
| 65f38f15 | 14919 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
14920 | if (htab == NULL) |
| 14921 | return FALSE; | |
| 14922 | ||
| 65f38f15 | 14923 | dynobj = htab->elf.dynobj; |
| 3d4d4302 | 14924 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
| 5bd4f169 | 14925 | |
| 65f38f15 | 14926 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 | 14927 | { |
| 5bd4f169 AM |
14928 | Elf64_External_Dyn *dyncon, *dynconend; |
| 14929 | ||
| 33e44f2e | 14930 | if (sdyn == NULL || htab->elf.sgot == NULL) |
| 65f38f15 | 14931 | abort (); |
| 5bd4f169 AM |
14932 | |
| 14933 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
| eea6121a | 14934 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
| 5bd4f169 AM |
14935 | for (; dyncon < dynconend; dyncon++) |
| 14936 | { | |
| 14937 | Elf_Internal_Dyn dyn; | |
| 19397422 | 14938 | asection *s; |
| 5bd4f169 AM |
14939 | |
| 14940 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
| 14941 | ||
| 14942 | switch (dyn.d_tag) | |
| 14943 | { | |
| 65f38f15 AM |
14944 | default: |
| 14945 | continue; | |
| 5bd4f169 | 14946 | |
| 5d1634d7 | 14947 | case DT_PPC64_GLINK: |
| 4ce794b7 | 14948 | s = htab->glink; |
| 6348e046 | 14949 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| ad8e1ba5 AM |
14950 | /* We stupidly defined DT_PPC64_GLINK to be the start |
| 14951 | of glink rather than the first entry point, which is | |
| 14952 | what ld.so needs, and now have a bigger stub to | |
| 14953 | support automatic multiple TOCs. */ | |
| b9e5796b | 14954 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4; |
| 5d1634d7 AM |
14955 | break; |
| 14956 | ||
| 19397422 AM |
14957 | case DT_PPC64_OPD: |
| 14958 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
14959 | if (s == NULL) |
| 14960 | continue; | |
| 14961 | dyn.d_un.d_ptr = s->vma; | |
| 19397422 AM |
14962 | break; |
| 14963 | ||
| e8910a83 AM |
14964 | case DT_PPC64_OPT: |
| 14965 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
| 14966 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
| 14967 | break; | |
| 14968 | ||
| 19397422 AM |
14969 | case DT_PPC64_OPDSZ: |
| 14970 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
14971 | if (s == NULL) |
| 14972 | continue; | |
| eea6121a | 14973 | dyn.d_un.d_val = s->size; |
| 19397422 AM |
14974 | break; |
| 14975 | ||
| 65f38f15 | 14976 | case DT_PLTGOT: |
| 33e44f2e | 14977 | s = htab->elf.splt; |
| 6348e046 | 14978 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 AM |
14979 | break; |
| 14980 | ||
| 14981 | case DT_JMPREL: | |
| 33e44f2e | 14982 | s = htab->elf.srelplt; |
| 6348e046 | 14983 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 | 14984 | break; |
| 5bd4f169 | 14985 | |
| 65f38f15 | 14986 | case DT_PLTRELSZ: |
| 33e44f2e | 14987 | dyn.d_un.d_val = htab->elf.srelplt->size; |
| 5d1634d7 AM |
14988 | break; |
| 14989 | ||
| 14990 | case DT_RELASZ: | |
| 14991 | /* Don't count procedure linkage table relocs in the | |
| 14992 | overall reloc count. */ | |
| 33e44f2e | 14993 | s = htab->elf.srelplt; |
| 6348e046 AM |
14994 | if (s == NULL) |
| 14995 | continue; | |
| eea6121a | 14996 | dyn.d_un.d_val -= s->size; |
| 6348e046 AM |
14997 | break; |
| 14998 | ||
| 14999 | case DT_RELA: | |
| 15000 | /* We may not be using the standard ELF linker script. | |
| 15001 | If .rela.plt is the first .rela section, we adjust | |
| 15002 | DT_RELA to not include it. */ | |
| 33e44f2e | 15003 | s = htab->elf.srelplt; |
| 6348e046 AM |
15004 | if (s == NULL) |
| 15005 | continue; | |
| 15006 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
| 15007 | continue; | |
| eea6121a | 15008 | dyn.d_un.d_ptr += s->size; |
| 65f38f15 | 15009 | break; |
| 5bd4f169 | 15010 | } |
| 5bd4f169 | 15011 | |
| 65f38f15 | 15012 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5bd4f169 | 15013 | } |
| 5bd4f169 AM |
15014 | } |
| 15015 | ||
| 33e44f2e | 15016 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0) |
| 5d1634d7 AM |
15017 | { |
| 15018 | /* Fill in the first entry in the global offset table. | |
| 15019 | We use it to hold the link-time TOCbase. */ | |
| 15020 | bfd_put_64 (output_bfd, | |
| 60ee0d4a | 15021 | elf_gp (output_bfd) + TOC_BASE_OFF, |
| 33e44f2e | 15022 | htab->elf.sgot->contents); |
| 5d1634d7 AM |
15023 | |
| 15024 | /* Set .got entry size. */ | |
| 33e44f2e | 15025 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
| 5d1634d7 AM |
15026 | } |
| 15027 | ||
| 33e44f2e | 15028 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
| 5d1634d7 AM |
15029 | { |
| 15030 | /* Set .plt entry size. */ | |
| 33e44f2e | 15031 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
| b9e5796b | 15032 | = PLT_ENTRY_SIZE (htab); |
| 5d1634d7 AM |
15033 | } |
| 15034 | ||
| 84f5d08e AM |
15035 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
| 15036 | brlt ourselves if emitrelocations. */ | |
| 15037 | if (htab->brlt != NULL | |
| 15038 | && htab->brlt->reloc_count != 0 | |
| 15039 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 15040 | htab->brlt, | |
| d4730f92 | 15041 | elf_section_data (htab->brlt)->rela.hdr, |
| 84f5d08e AM |
15042 | elf_section_data (htab->brlt)->relocs, |
| 15043 | NULL)) | |
| 15044 | return FALSE; | |
| 15045 | ||
| 176a0d42 AM |
15046 | if (htab->glink != NULL |
| 15047 | && htab->glink->reloc_count != 0 | |
| 15048 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 15049 | htab->glink, | |
| d4730f92 | 15050 | elf_section_data (htab->glink)->rela.hdr, |
| 176a0d42 AM |
15051 | elf_section_data (htab->glink)->relocs, |
| 15052 | NULL)) | |
| 15053 | return FALSE; | |
| 15054 | ||
| 58d180e8 AM |
15055 | |
| 15056 | if (htab->glink_eh_frame != NULL | |
| dbaa2011 | 15057 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME |
| 58d180e8 AM |
15058 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, |
| 15059 | htab->glink_eh_frame, | |
| 15060 | htab->glink_eh_frame->contents)) | |
| 15061 | return FALSE; | |
| 15062 | ||
| e717da7e | 15063 | /* We need to handle writing out multiple GOT sections ourselves, |
| 7b53ace3 AM |
15064 | since we didn't add them to DYNOBJ. We know dynobj is the first |
| 15065 | bfd. */ | |
| c72f2fb2 | 15066 | while ((dynobj = dynobj->link.next) != NULL) |
| e717da7e AM |
15067 | { |
| 15068 | asection *s; | |
| 7b53ace3 | 15069 | |
| 0c8d6e5c | 15070 | if (!is_ppc64_elf (dynobj)) |
| 7b53ace3 AM |
15071 | continue; |
| 15072 | ||
| e717da7e AM |
15073 | s = ppc64_elf_tdata (dynobj)->got; |
| 15074 | if (s != NULL | |
| eea6121a | 15075 | && s->size != 0 |
| e717da7e AM |
15076 | && s->output_section != bfd_abs_section_ptr |
| 15077 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 15078 | s->contents, s->output_offset, | |
| eea6121a | 15079 | s->size)) |
| e717da7e AM |
15080 | return FALSE; |
| 15081 | s = ppc64_elf_tdata (dynobj)->relgot; | |
| 15082 | if (s != NULL | |
| eea6121a | 15083 | && s->size != 0 |
| e717da7e AM |
15084 | && s->output_section != bfd_abs_section_ptr |
| 15085 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 15086 | s->contents, s->output_offset, | |
| eea6121a | 15087 | s->size)) |
| e717da7e AM |
15088 | return FALSE; |
| 15089 | } | |
| f6c52c13 | 15090 | |
| b34976b6 | 15091 | return TRUE; |
| 5bd4f169 AM |
15092 | } |
| 15093 | ||
| 5bd4f169 | 15094 | #include "elf64-target.h" |
| 7b8e7dad AM |
15095 | |
| 15096 | /* FreeBSD support */ | |
| 15097 | ||
| 15098 | #undef TARGET_LITTLE_SYM | |
| 15099 | #undef TARGET_LITTLE_NAME | |
| 15100 | ||
| 15101 | #undef TARGET_BIG_SYM | |
| 6d00b590 | 15102 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
| 7b8e7dad AM |
15103 | #undef TARGET_BIG_NAME |
| 15104 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
| 15105 | ||
| 15106 | #undef ELF_OSABI | |
| 15107 | #define ELF_OSABI ELFOSABI_FREEBSD | |
| 15108 | ||
| 15109 | #undef elf64_bed | |
| 15110 | #define elf64_bed elf64_powerpc_fbsd_bed | |
| 15111 | ||
| 15112 | #include "elf64-target.h" | |
| 15113 |