projects / binutils.git / blame
| Commit | Line | Data |
|---|---|---|
| 5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
| 3a71aa26 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
| fb34365b | 3 | 2009, 2010 Free Software Foundation, Inc. |
| 5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <[email protected]>, |
| 5 | based on elf32-ppc.c by Ian Lance Taylor. | |
| 32ca9640 | 6 | Largely rewritten by Alan Modra. |
| 5bd4f169 | 7 | |
| ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
| 5bd4f169 | 9 | |
| ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by | |
| cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
| ae9a127f | 13 | (at your option) any later version. |
| 5bd4f169 | 14 | |
| ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 18 | GNU General Public License for more details. | |
| 5bd4f169 | 19 | |
| 4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
| 21 | with this program; if not, write to the Free Software Foundation, Inc., | |
| 3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| 5bd4f169 | 23 | |
| cd123cb7 | 24 | |
| 4ce794b7 AM |
25 | /* The 64-bit PowerPC ELF ABI may be found at |
| 26 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
| 27 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
| 5bd4f169 | 28 | |
| 3db64b00 | 29 | #include "sysdep.h" |
| 183e98be | 30 | #include <stdarg.h> |
| 5bd4f169 | 31 | #include "bfd.h" |
| 5bd4f169 AM |
32 | #include "bfdlink.h" |
| 33 | #include "libbfd.h" | |
| 34 | #include "elf-bfd.h" | |
| 04c9666a | 35 | #include "elf/ppc64.h" |
| 5d1634d7 | 36 | #include "elf64-ppc.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 AM |
56 | static bfd_vma opd_entry_value |
| 57 | (asection *, bfd_vma, asection **, bfd_vma *); | |
| 5bd4f169 | 58 | |
| ad8e1ba5 AM |
59 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
| 60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
| 61 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
| 62 | #define TARGET_BIG_NAME "elf64-powerpc" | |
| 63 | #define ELF_ARCH bfd_arch_powerpc | |
| 64 | #define ELF_MACHINE_CODE EM_PPC64 | |
| 65 | #define ELF_MAXPAGESIZE 0x10000 | |
| 24718e3b | 66 | #define ELF_COMMONPAGESIZE 0x1000 |
| ad8e1ba5 AM |
67 | #define elf_info_to_howto ppc64_elf_info_to_howto |
| 68 | ||
| 69 | #define elf_backend_want_got_sym 0 | |
| 70 | #define elf_backend_want_plt_sym 0 | |
| 71 | #define elf_backend_plt_alignment 3 | |
| 72 | #define elf_backend_plt_not_loaded 1 | |
| ad8e1ba5 | 73 | #define elf_backend_got_header_size 8 |
| ad8e1ba5 AM |
74 | #define elf_backend_can_gc_sections 1 |
| 75 | #define elf_backend_can_refcount 1 | |
| 76 | #define elf_backend_rela_normal 1 | |
| 6bfdb61b | 77 | #define elf_backend_default_execstack 0 |
| ad8e1ba5 | 78 | |
| e717da7e | 79 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
| ad8e1ba5 | 80 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
| 157090f7 | 81 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
| ad8e1ba5 AM |
82 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
| 83 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
| 84 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
| 85 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
| 90e3cdf2 | 86 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
| ad8e1ba5 AM |
87 | |
| 88 | #define elf_backend_object_p ppc64_elf_object_p | |
| d37c89e5 AM |
89 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
| 90 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
| 183e98be | 91 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
| ad8e1ba5 AM |
92 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
| 93 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
| 555cd476 | 94 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
| 7d9616d7 | 95 | #define elf_backend_check_directives ppc64_elf_process_dot_syms |
| 97fed1c9 | 96 | #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup |
| 8387904d | 97 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
| ad8e1ba5 | 98 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
| 74f0fb50 | 99 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
| 64d03ab5 | 100 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
| ad8e1ba5 AM |
101 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
| 102 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
| 103 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
| 104 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
| 105 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
| 106 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
| 74541ad4 | 107 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
| 60124e18 | 108 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
| ad8e1ba5 AM |
109 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
| 110 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
| 111 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
| 112 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
| 754021d0 | 113 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
| 29ef7005 | 114 | #define elf_backend_special_sections ppc64_elf_special_sections |
| e054468f | 115 | #define elf_backend_post_process_headers _bfd_elf_set_osabi |
| ad8e1ba5 | 116 | |
| 5bd4f169 AM |
117 | /* The name of the dynamic interpreter. This is put in the .interp |
| 118 | section. */ | |
| 119 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
| 120 | ||
| 121 | /* The size in bytes of an entry in the procedure linkage table. */ | |
| 122 | #define PLT_ENTRY_SIZE 24 | |
| 123 | ||
| 124 | /* The initial size of the plt reserved for the dynamic linker. */ | |
| 5d1634d7 | 125 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
| 5bd4f169 AM |
126 | |
| 127 | /* TOC base pointers offset from start of TOC. */ | |
| 411e1bfb AM |
128 | #define TOC_BASE_OFF 0x8000 |
| 129 | ||
| 130 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
| 131 | #define TP_OFFSET 0x7000 | |
| 132 | #define DTP_OFFSET 0x8000 | |
| 5bd4f169 | 133 | |
| ad8e1ba5 AM |
134 | /* .plt call stub instructions. The normal stub is like this, but |
| 135 | sometimes the .plt entry crosses a 64k boundary and we need to | |
| ac2df442 | 136 | insert an addi to adjust r12. */ |
| ad8e1ba5 | 137 | #define PLT_CALL_STUB_SIZE (7*4) |
| 5d1634d7 AM |
138 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
| 139 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
| 140 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
| 5d1634d7 | 141 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ |
| ac2df442 | 142 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ |
| 5d1634d7 AM |
143 | /* ld %r11,xxx+16@l(%r12) */ |
| 144 | #define BCTR 0x4e800420 /* bctr */ | |
| 145 | ||
| 5d1634d7 | 146 | |
| ee4bf8d2 | 147 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
| ac2df442 | 148 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ |
| ad8e1ba5 AM |
149 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
| 150 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
| 151 | ||
| ac2df442 AM |
152 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
| 153 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
| 154 | ||
| ad8e1ba5 AM |
155 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ |
| 156 | ||
| ee4bf8d2 | 157 | /* glink call stub instructions. We enter with the index in R0. */ |
| ad8e1ba5 | 158 | #define GLINK_CALL_STUB_SIZE (16*4) |
| ee4bf8d2 AM |
159 | /* 0: */ |
| 160 | /* .quad plt0-1f */ | |
| 161 | /* __glink: */ | |
| 162 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
| 163 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
| 164 | /* 1: */ | |
| 165 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
| 166 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
| 167 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
| 168 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
| 169 | /* ld %11,0(%12) */ | |
| 170 | /* ld %2,8(%12) */ | |
| 171 | /* mtctr %11 */ | |
| 172 | /* ld %11,16(%12) */ | |
| 173 | /* bctr */ | |
| 5d1634d7 AM |
174 | |
| 175 | /* Pad with this. */ | |
| 176 | #define NOP 0x60000000 | |
| 177 | ||
| 721956f4 AM |
178 | /* Some other nops. */ |
| 179 | #define CROR_151515 0x4def7b82 | |
| 180 | #define CROR_313131 0x4ffffb82 | |
| 181 | ||
| cedb70c5 | 182 | /* .glink entries for the first 32k functions are two instructions. */ |
| 5d1634d7 AM |
183 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
| 184 | #define B_DOT 0x48000000 /* b . */ | |
| 185 | ||
| 186 | /* After that, we need two instructions to load the index, followed by | |
| 187 | a branch. */ | |
| 188 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
| 10ed1bba | 189 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
| 41bd81ab | 190 | |
| deb0e272 AM |
191 | /* Instructions used by the save and restore reg functions. */ |
| 192 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
| 193 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
| 194 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
| 195 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
| 82bd7b59 AM |
196 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
| 197 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
| deb0e272 AM |
198 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
| 199 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
| 200 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
| 201 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
| 82bd7b59 AM |
202 | #define BLR 0x4e800020 /* blr */ |
| 203 | ||
| 41bd81ab AM |
204 | /* Since .opd is an array of descriptors and each entry will end up |
| 205 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
| 206 | propagate .opd relocs; The dynamic linker should be taught to | |
| 1e2f5b6e | 207 | relocate .opd without reloc entries. */ |
| 41bd81ab AM |
208 | #ifndef NO_OPD_RELOCS |
| 209 | #define NO_OPD_RELOCS 0 | |
| 210 | #endif | |
| 5bd4f169 | 211 | \f |
| f5e87a1d | 212 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
| b34976b6 | 213 | |
| 5bd4f169 | 214 | /* Relocation HOWTO's. */ |
| 04c9666a | 215 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
| 5bd4f169 AM |
216 | |
| 217 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
| 218 | /* This reloc does nothing. */ | |
| 219 | HOWTO (R_PPC64_NONE, /* type */ | |
| 220 | 0, /* rightshift */ | |
| 411e1bfb AM |
221 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 222 | 32, /* bitsize */ | |
| b34976b6 | 223 | FALSE, /* pc_relative */ |
| 5bd4f169 | 224 | 0, /* bitpos */ |
| f5e87a1d | 225 | complain_overflow_dont, /* complain_on_overflow */ |
| 5bd4f169 AM |
226 | bfd_elf_generic_reloc, /* special_function */ |
| 227 | "R_PPC64_NONE", /* name */ | |
| b34976b6 | 228 | FALSE, /* partial_inplace */ |
| d006db6c | 229 | 0, /* src_mask */ |
| 5bd4f169 | 230 | 0, /* dst_mask */ |
| b34976b6 | 231 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
232 | |
| 233 | /* A standard 32 bit relocation. */ | |
| 234 | HOWTO (R_PPC64_ADDR32, /* type */ | |
| 235 | 0, /* rightshift */ | |
| 236 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 237 | 32, /* bitsize */ | |
| b34976b6 | 238 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
239 | 0, /* bitpos */ |
| 240 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 241 | bfd_elf_generic_reloc, /* special_function */ | |
| 242 | "R_PPC64_ADDR32", /* name */ | |
| b34976b6 | 243 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
244 | 0, /* src_mask */ |
| 245 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 246 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
247 | |
| 248 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
| 249 | FIXME: we don't check that, we just clear them. */ | |
| 250 | HOWTO (R_PPC64_ADDR24, /* type */ | |
| 251 | 0, /* rightshift */ | |
| 252 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 253 | 26, /* bitsize */ | |
| b34976b6 | 254 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
255 | 0, /* bitpos */ |
| 256 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 257 | bfd_elf_generic_reloc, /* special_function */ | |
| 258 | "R_PPC64_ADDR24", /* name */ | |
| b34976b6 | 259 | FALSE, /* partial_inplace */ |
| d006db6c | 260 | 0, /* src_mask */ |
| f5e87a1d | 261 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 262 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
263 | |
| 264 | /* A standard 16 bit relocation. */ | |
| 265 | HOWTO (R_PPC64_ADDR16, /* type */ | |
| 266 | 0, /* rightshift */ | |
| 267 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 268 | 16, /* bitsize */ | |
| b34976b6 | 269 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
270 | 0, /* bitpos */ |
| 271 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 272 | bfd_elf_generic_reloc, /* special_function */ | |
| 273 | "R_PPC64_ADDR16", /* name */ | |
| b34976b6 | 274 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
275 | 0, /* src_mask */ |
| 276 | 0xffff, /* dst_mask */ | |
| b34976b6 | 277 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
278 | |
| 279 | /* A 16 bit relocation without overflow. */ | |
| 280 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
| 281 | 0, /* rightshift */ | |
| 282 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 283 | 16, /* bitsize */ | |
| b34976b6 | 284 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
285 | 0, /* bitpos */ |
| 286 | complain_overflow_dont,/* complain_on_overflow */ | |
| 287 | bfd_elf_generic_reloc, /* special_function */ | |
| 288 | "R_PPC64_ADDR16_LO", /* name */ | |
| b34976b6 | 289 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
290 | 0, /* src_mask */ |
| 291 | 0xffff, /* dst_mask */ | |
| b34976b6 | 292 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
293 | |
| 294 | /* Bits 16-31 of an address. */ | |
| 295 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
| 296 | 16, /* rightshift */ | |
| 297 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 298 | 16, /* bitsize */ | |
| b34976b6 | 299 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
300 | 0, /* bitpos */ |
| 301 | complain_overflow_dont, /* complain_on_overflow */ | |
| 302 | bfd_elf_generic_reloc, /* special_function */ | |
| 303 | "R_PPC64_ADDR16_HI", /* name */ | |
| b34976b6 | 304 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
305 | 0, /* src_mask */ |
| 306 | 0xffff, /* dst_mask */ | |
| b34976b6 | 307 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
308 | |
| 309 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
| 310 | bits, treated as a signed number, is negative. */ | |
| 311 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
| 312 | 16, /* rightshift */ | |
| 313 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 314 | 16, /* bitsize */ | |
| b34976b6 | 315 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
316 | 0, /* bitpos */ |
| 317 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 318 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 319 | "R_PPC64_ADDR16_HA", /* name */ |
| b34976b6 | 320 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
321 | 0, /* src_mask */ |
| 322 | 0xffff, /* dst_mask */ | |
| b34976b6 | 323 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
324 | |
| 325 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
| 326 | FIXME: we don't check that, we just clear them. */ | |
| 327 | HOWTO (R_PPC64_ADDR14, /* type */ | |
| 328 | 0, /* rightshift */ | |
| 329 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 330 | 16, /* bitsize */ | |
| b34976b6 | 331 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
332 | 0, /* bitpos */ |
| 333 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 2441e016 | 334 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 335 | "R_PPC64_ADDR14", /* name */ |
| b34976b6 | 336 | FALSE, /* partial_inplace */ |
| d006db6c | 337 | 0, /* src_mask */ |
| f5e87a1d | 338 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 339 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
340 | |
| 341 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 342 | indicate that the branch is expected to be taken. The lower two | |
| 343 | bits must be zero. */ | |
| 344 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
| 345 | 0, /* rightshift */ | |
| 346 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 347 | 16, /* bitsize */ | |
| b34976b6 | 348 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
349 | 0, /* bitpos */ |
| 350 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 351 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 352 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
| b34976b6 | 353 | FALSE, /* partial_inplace */ |
| d006db6c | 354 | 0, /* src_mask */ |
| f5e87a1d | 355 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 356 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
357 | |
| 358 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 359 | indicate that the branch is not expected to be taken. The lower | |
| 360 | two bits must be zero. */ | |
| 361 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
| 362 | 0, /* rightshift */ | |
| 363 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 364 | 16, /* bitsize */ | |
| b34976b6 | 365 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
366 | 0, /* bitpos */ |
| 367 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 368 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 369 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
| b34976b6 | 370 | FALSE, /* partial_inplace */ |
| d006db6c | 371 | 0, /* src_mask */ |
| f5e87a1d | 372 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 373 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
374 | |
| 375 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
| 376 | HOWTO (R_PPC64_REL24, /* type */ | |
| 377 | 0, /* rightshift */ | |
| 378 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 379 | 26, /* bitsize */ | |
| b34976b6 | 380 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
381 | 0, /* bitpos */ |
| 382 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 383 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 384 | "R_PPC64_REL24", /* name */ |
| b34976b6 | 385 | FALSE, /* partial_inplace */ |
| d006db6c | 386 | 0, /* src_mask */ |
| f5e87a1d | 387 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 388 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
389 | |
| 390 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
| 391 | HOWTO (R_PPC64_REL14, /* type */ | |
| 392 | 0, /* rightshift */ | |
| 393 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 394 | 16, /* bitsize */ | |
| b34976b6 | 395 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
396 | 0, /* bitpos */ |
| 397 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 398 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 399 | "R_PPC64_REL14", /* name */ |
| b34976b6 | 400 | FALSE, /* partial_inplace */ |
| d006db6c | 401 | 0, /* src_mask */ |
| f5e87a1d | 402 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 403 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
404 | |
| 405 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 406 | the branch is expected to be taken. The lower two bits must be | |
| 407 | zero. */ | |
| 408 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
| 409 | 0, /* rightshift */ | |
| 410 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 411 | 16, /* bitsize */ | |
| b34976b6 | 412 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
413 | 0, /* bitpos */ |
| 414 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 415 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 416 | "R_PPC64_REL14_BRTAKEN", /* name */ |
| b34976b6 | 417 | FALSE, /* partial_inplace */ |
| d006db6c | 418 | 0, /* src_mask */ |
| f5e87a1d | 419 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 420 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
421 | |
| 422 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 423 | the branch is not expected to be taken. The lower two bits must | |
| 424 | be zero. */ | |
| 425 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
| 426 | 0, /* rightshift */ | |
| 427 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 428 | 16, /* bitsize */ | |
| b34976b6 | 429 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
430 | 0, /* bitpos */ |
| 431 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 432 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 433 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
| b34976b6 | 434 | FALSE, /* partial_inplace */ |
| d006db6c | 435 | 0, /* src_mask */ |
| f5e87a1d | 436 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 437 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
438 | |
| 439 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
| 440 | symbol. */ | |
| 441 | HOWTO (R_PPC64_GOT16, /* type */ | |
| 442 | 0, /* rightshift */ | |
| 443 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 444 | 16, /* bitsize */ | |
| b34976b6 | 445 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
446 | 0, /* bitpos */ |
| 447 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 448 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 449 | "R_PPC64_GOT16", /* name */ |
| b34976b6 | 450 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
451 | 0, /* src_mask */ |
| 452 | 0xffff, /* dst_mask */ | |
| b34976b6 | 453 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
454 | |
| 455 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
| 456 | the symbol. */ | |
| 457 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
| 458 | 0, /* rightshift */ | |
| 459 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 460 | 16, /* bitsize */ | |
| b34976b6 | 461 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
462 | 0, /* bitpos */ |
| 463 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 464 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 465 | "R_PPC64_GOT16_LO", /* name */ |
| b34976b6 | 466 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
467 | 0, /* src_mask */ |
| 468 | 0xffff, /* dst_mask */ | |
| b34976b6 | 469 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
470 | |
| 471 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
| 472 | the symbol. */ | |
| 473 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
| 474 | 16, /* rightshift */ | |
| 475 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 476 | 16, /* bitsize */ | |
| b34976b6 | 477 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
478 | 0, /* bitpos */ |
| 479 | complain_overflow_dont,/* complain_on_overflow */ | |
| 805fc799 | 480 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 481 | "R_PPC64_GOT16_HI", /* name */ |
| b34976b6 | 482 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
483 | 0, /* src_mask */ |
| 484 | 0xffff, /* dst_mask */ | |
| b34976b6 | 485 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
486 | |
| 487 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
| 488 | the symbol. */ | |
| 489 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
| 490 | 16, /* rightshift */ | |
| 491 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 492 | 16, /* bitsize */ | |
| b34976b6 | 493 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
494 | 0, /* bitpos */ |
| 495 | complain_overflow_dont,/* complain_on_overflow */ | |
| 805fc799 | 496 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 497 | "R_PPC64_GOT16_HA", /* name */ |
| b34976b6 | 498 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
499 | 0, /* src_mask */ |
| 500 | 0xffff, /* dst_mask */ | |
| b34976b6 | 501 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
502 | |
| 503 | /* This is used only by the dynamic linker. The symbol should exist | |
| 504 | both in the object being run and in some shared library. The | |
| 505 | dynamic linker copies the data addressed by the symbol from the | |
| 506 | shared library into the object, because the object being | |
| 507 | run has to have the data at some particular address. */ | |
| 508 | HOWTO (R_PPC64_COPY, /* type */ | |
| 509 | 0, /* rightshift */ | |
| f5e87a1d AM |
510 | 0, /* this one is variable size */ |
| 511 | 0, /* bitsize */ | |
| b34976b6 | 512 | FALSE, /* pc_relative */ |
| 5bd4f169 | 513 | 0, /* bitpos */ |
| f5e87a1d AM |
514 | complain_overflow_dont, /* complain_on_overflow */ |
| 515 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 5bd4f169 | 516 | "R_PPC64_COPY", /* name */ |
| b34976b6 | 517 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
518 | 0, /* src_mask */ |
| 519 | 0, /* dst_mask */ | |
| b34976b6 | 520 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
521 | |
| 522 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
| 523 | entries. */ | |
| 524 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
| 525 | 0, /* rightshift */ | |
| 526 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 527 | 64, /* bitsize */ | |
| b34976b6 | 528 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
529 | 0, /* bitpos */ |
| 530 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 531 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 532 | "R_PPC64_GLOB_DAT", /* name */ |
| b34976b6 | 533 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 534 | 0, /* src_mask */ |
| f5e87a1d | 535 | ONES (64), /* dst_mask */ |
| b34976b6 | 536 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
537 | |
| 538 | /* Created by the link editor. Marks a procedure linkage table | |
| 539 | entry for a symbol. */ | |
| 540 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
| 541 | 0, /* rightshift */ | |
| 542 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 543 | 0, /* bitsize */ | |
| b34976b6 | 544 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
545 | 0, /* bitpos */ |
| 546 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 547 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 548 | "R_PPC64_JMP_SLOT", /* name */ |
| b34976b6 | 549 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
550 | 0, /* src_mask */ |
| 551 | 0, /* dst_mask */ | |
| b34976b6 | 552 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
553 | |
| 554 | /* Used only by the dynamic linker. When the object is run, this | |
| 555 | doubleword64 is set to the load address of the object, plus the | |
| 556 | addend. */ | |
| 557 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
| 558 | 0, /* rightshift */ | |
| 559 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 560 | 64, /* bitsize */ | |
| b34976b6 | 561 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
562 | 0, /* bitpos */ |
| 563 | complain_overflow_dont, /* complain_on_overflow */ | |
| 564 | bfd_elf_generic_reloc, /* special_function */ | |
| 565 | "R_PPC64_RELATIVE", /* name */ | |
| b34976b6 | 566 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 567 | 0, /* src_mask */ |
| f5e87a1d | 568 | ONES (64), /* dst_mask */ |
| b34976b6 | 569 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
570 | |
| 571 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
| 572 | HOWTO (R_PPC64_UADDR32, /* type */ | |
| 573 | 0, /* rightshift */ | |
| 574 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 575 | 32, /* bitsize */ | |
| b34976b6 | 576 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
577 | 0, /* bitpos */ |
| 578 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 579 | bfd_elf_generic_reloc, /* special_function */ | |
| 580 | "R_PPC64_UADDR32", /* name */ | |
| b34976b6 | 581 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
582 | 0, /* src_mask */ |
| 583 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 584 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
585 | |
| 586 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
| 587 | HOWTO (R_PPC64_UADDR16, /* type */ | |
| 588 | 0, /* rightshift */ | |
| 589 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 590 | 16, /* bitsize */ | |
| b34976b6 | 591 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
592 | 0, /* bitpos */ |
| 593 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 594 | bfd_elf_generic_reloc, /* special_function */ | |
| 595 | "R_PPC64_UADDR16", /* name */ | |
| b34976b6 | 596 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
597 | 0, /* src_mask */ |
| 598 | 0xffff, /* dst_mask */ | |
| b34976b6 | 599 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
600 | |
| 601 | /* 32-bit PC relative. */ | |
| 602 | HOWTO (R_PPC64_REL32, /* type */ | |
| 603 | 0, /* rightshift */ | |
| 604 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 605 | 32, /* bitsize */ | |
| b34976b6 | 606 | TRUE, /* pc_relative */ |
| 5bd4f169 | 607 | 0, /* bitpos */ |
| cedb70c5 | 608 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
| 5bd4f169 AM |
609 | complain_overflow_signed, /* complain_on_overflow */ |
| 610 | bfd_elf_generic_reloc, /* special_function */ | |
| 611 | "R_PPC64_REL32", /* name */ | |
| b34976b6 | 612 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
613 | 0, /* src_mask */ |
| 614 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 615 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 616 | |
| 10ed1bba | 617 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
618 | HOWTO (R_PPC64_PLT32, /* type */ |
| 619 | 0, /* rightshift */ | |
| 620 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 621 | 32, /* bitsize */ | |
| b34976b6 | 622 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
623 | 0, /* bitpos */ |
| 624 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 625 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 626 | "R_PPC64_PLT32", /* name */ |
| b34976b6 | 627 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 628 | 0, /* src_mask */ |
| f5e87a1d | 629 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 630 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
631 | |
| 632 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
| 633 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
| 634 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
| 635 | 0, /* rightshift */ | |
| 636 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 637 | 32, /* bitsize */ | |
| b34976b6 | 638 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
639 | 0, /* bitpos */ |
| 640 | complain_overflow_signed, /* complain_on_overflow */ | |
| 641 | bfd_elf_generic_reloc, /* special_function */ | |
| 642 | "R_PPC64_PLTREL32", /* name */ | |
| b34976b6 | 643 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 644 | 0, /* src_mask */ |
| f5e87a1d | 645 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 646 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
647 | |
| 648 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
| 649 | the symbol. */ | |
| 650 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
| 651 | 0, /* rightshift */ | |
| 652 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 653 | 16, /* bitsize */ | |
| b34976b6 | 654 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
655 | 0, /* bitpos */ |
| 656 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 657 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 658 | "R_PPC64_PLT16_LO", /* name */ |
| b34976b6 | 659 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
660 | 0, /* src_mask */ |
| 661 | 0xffff, /* dst_mask */ | |
| b34976b6 | 662 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
663 | |
| 664 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
| 665 | the symbol. */ | |
| 666 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
| 667 | 16, /* rightshift */ | |
| 668 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 669 | 16, /* bitsize */ | |
| b34976b6 | 670 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
671 | 0, /* bitpos */ |
| 672 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 673 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 674 | "R_PPC64_PLT16_HI", /* name */ |
| b34976b6 | 675 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
676 | 0, /* src_mask */ |
| 677 | 0xffff, /* dst_mask */ | |
| b34976b6 | 678 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
679 | |
| 680 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
| 681 | the symbol. */ | |
| 682 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
| 683 | 16, /* rightshift */ | |
| 684 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 685 | 16, /* bitsize */ | |
| b34976b6 | 686 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
687 | 0, /* bitpos */ |
| 688 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 689 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 690 | "R_PPC64_PLT16_HA", /* name */ |
| b34976b6 | 691 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
692 | 0, /* src_mask */ |
| 693 | 0xffff, /* dst_mask */ | |
| b34976b6 | 694 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 695 | |
| c061c2d8 | 696 | /* 16-bit section relative relocation. */ |
| 5bd4f169 AM |
697 | HOWTO (R_PPC64_SECTOFF, /* type */ |
| 698 | 0, /* rightshift */ | |
| c061c2d8 AM |
699 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 700 | 16, /* bitsize */ | |
| b34976b6 | 701 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
702 | 0, /* bitpos */ |
| 703 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 704 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 705 | "R_PPC64_SECTOFF", /* name */ |
| b34976b6 | 706 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 707 | 0, /* src_mask */ |
| c061c2d8 | 708 | 0xffff, /* dst_mask */ |
| b34976b6 | 709 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 710 | |
| c061c2d8 | 711 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
| 5bd4f169 AM |
712 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
| 713 | 0, /* rightshift */ | |
| 714 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 715 | 16, /* bitsize */ | |
| b34976b6 | 716 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
717 | 0, /* bitpos */ |
| 718 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 719 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 720 | "R_PPC64_SECTOFF_LO", /* name */ |
| b34976b6 | 721 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
722 | 0, /* src_mask */ |
| 723 | 0xffff, /* dst_mask */ | |
| b34976b6 | 724 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
725 | |
| 726 | /* 16-bit upper half section relative relocation. */ | |
| 727 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
| 728 | 16, /* rightshift */ | |
| 729 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 730 | 16, /* bitsize */ | |
| b34976b6 | 731 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
732 | 0, /* bitpos */ |
| 733 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 734 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 735 | "R_PPC64_SECTOFF_HI", /* name */ |
| b34976b6 | 736 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
737 | 0, /* src_mask */ |
| 738 | 0xffff, /* dst_mask */ | |
| b34976b6 | 739 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
740 | |
| 741 | /* 16-bit upper half adjusted section relative relocation. */ | |
| 742 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
| 743 | 16, /* rightshift */ | |
| 744 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 745 | 16, /* bitsize */ | |
| b34976b6 | 746 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
747 | 0, /* bitpos */ |
| 748 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 749 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
| 5bd4f169 | 750 | "R_PPC64_SECTOFF_HA", /* name */ |
| b34976b6 | 751 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
752 | 0, /* src_mask */ |
| 753 | 0xffff, /* dst_mask */ | |
| b34976b6 | 754 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 755 | |
| 04c9666a AM |
756 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
| 757 | HOWTO (R_PPC64_REL30, /* type */ | |
| 5bd4f169 AM |
758 | 2, /* rightshift */ |
| 759 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 760 | 30, /* bitsize */ | |
| b34976b6 | 761 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
762 | 0, /* bitpos */ |
| 763 | complain_overflow_dont, /* complain_on_overflow */ | |
| 764 | bfd_elf_generic_reloc, /* special_function */ | |
| 04c9666a | 765 | "R_PPC64_REL30", /* name */ |
| b34976b6 | 766 | FALSE, /* partial_inplace */ |
| d006db6c | 767 | 0, /* src_mask */ |
| 5bd4f169 | 768 | 0xfffffffc, /* dst_mask */ |
| b34976b6 | 769 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
770 | |
| 771 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
| 772 | ||
| 773 | /* A standard 64-bit relocation. */ | |
| 774 | HOWTO (R_PPC64_ADDR64, /* type */ | |
| 775 | 0, /* rightshift */ | |
| 776 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 777 | 64, /* bitsize */ | |
| b34976b6 | 778 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
779 | 0, /* bitpos */ |
| 780 | complain_overflow_dont, /* complain_on_overflow */ | |
| 781 | bfd_elf_generic_reloc, /* special_function */ | |
| 782 | "R_PPC64_ADDR64", /* name */ | |
| b34976b6 | 783 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 784 | 0, /* src_mask */ |
| f5e87a1d | 785 | ONES (64), /* dst_mask */ |
| b34976b6 | 786 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
787 | |
| 788 | /* The bits 32-47 of an address. */ | |
| 789 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
| 790 | 32, /* rightshift */ | |
| 791 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 792 | 16, /* bitsize */ | |
| b34976b6 | 793 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
794 | 0, /* bitpos */ |
| 795 | complain_overflow_dont, /* complain_on_overflow */ | |
| 796 | bfd_elf_generic_reloc, /* special_function */ | |
| 797 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
| b34976b6 | 798 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
799 | 0, /* src_mask */ |
| 800 | 0xffff, /* dst_mask */ | |
| b34976b6 | 801 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
802 | |
| 803 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
| 804 | 16 bits, treated as a signed number, is negative. */ | |
| 805 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
| 806 | 32, /* rightshift */ | |
| 807 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 808 | 16, /* bitsize */ | |
| b34976b6 | 809 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
810 | 0, /* bitpos */ |
| 811 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 812 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 813 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
| b34976b6 | 814 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
815 | 0, /* src_mask */ |
| 816 | 0xffff, /* dst_mask */ | |
| b34976b6 | 817 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
818 | |
| 819 | /* The bits 48-63 of an address. */ | |
| 820 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
| 821 | 48, /* rightshift */ | |
| 822 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 823 | 16, /* bitsize */ | |
| b34976b6 | 824 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
825 | 0, /* bitpos */ |
| 826 | complain_overflow_dont, /* complain_on_overflow */ | |
| 827 | bfd_elf_generic_reloc, /* special_function */ | |
| 828 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
| b34976b6 | 829 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
830 | 0, /* src_mask */ |
| 831 | 0xffff, /* dst_mask */ | |
| b34976b6 | 832 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
833 | |
| 834 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
| 835 | 16 bits, treated as a signed number, is negative. */ | |
| 836 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
| 837 | 48, /* rightshift */ | |
| 838 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 839 | 16, /* bitsize */ | |
| b34976b6 | 840 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
841 | 0, /* bitpos */ |
| 842 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 843 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 844 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
| b34976b6 | 845 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
846 | 0, /* src_mask */ |
| 847 | 0xffff, /* dst_mask */ | |
| b34976b6 | 848 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
849 | |
| 850 | /* Like ADDR64, but may be unaligned. */ | |
| 851 | HOWTO (R_PPC64_UADDR64, /* type */ | |
| 852 | 0, /* rightshift */ | |
| 853 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 854 | 64, /* bitsize */ | |
| b34976b6 | 855 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
856 | 0, /* bitpos */ |
| 857 | complain_overflow_dont, /* complain_on_overflow */ | |
| 858 | bfd_elf_generic_reloc, /* special_function */ | |
| 859 | "R_PPC64_UADDR64", /* name */ | |
| b34976b6 | 860 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 861 | 0, /* src_mask */ |
| f5e87a1d | 862 | ONES (64), /* dst_mask */ |
| b34976b6 | 863 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
864 | |
| 865 | /* 64-bit relative relocation. */ | |
| 866 | HOWTO (R_PPC64_REL64, /* type */ | |
| 867 | 0, /* rightshift */ | |
| 868 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 869 | 64, /* bitsize */ | |
| b34976b6 | 870 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
871 | 0, /* bitpos */ |
| 872 | complain_overflow_dont, /* complain_on_overflow */ | |
| 873 | bfd_elf_generic_reloc, /* special_function */ | |
| 874 | "R_PPC64_REL64", /* name */ | |
| b34976b6 | 875 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 876 | 0, /* src_mask */ |
| f5e87a1d | 877 | ONES (64), /* dst_mask */ |
| b34976b6 | 878 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 879 | |
| cedb70c5 | 880 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
881 | HOWTO (R_PPC64_PLT64, /* type */ |
| 882 | 0, /* rightshift */ | |
| 883 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 884 | 64, /* bitsize */ | |
| b34976b6 | 885 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
886 | 0, /* bitpos */ |
| 887 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 888 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 889 | "R_PPC64_PLT64", /* name */ |
| b34976b6 | 890 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 891 | 0, /* src_mask */ |
| f5e87a1d | 892 | ONES (64), /* dst_mask */ |
| b34976b6 | 893 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
894 | |
| 895 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
| 896 | table. */ | |
| 897 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
| 898 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
| 899 | 0, /* rightshift */ | |
| 900 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 901 | 64, /* bitsize */ | |
| b34976b6 | 902 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
903 | 0, /* bitpos */ |
| 904 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 905 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 906 | "R_PPC64_PLTREL64", /* name */ |
| b34976b6 | 907 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 908 | 0, /* src_mask */ |
| f5e87a1d | 909 | ONES (64), /* dst_mask */ |
| b34976b6 | 910 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
911 | |
| 912 | /* 16 bit TOC-relative relocation. */ | |
| 913 | ||
| 914 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
| 915 | HOWTO (R_PPC64_TOC16, /* type */ | |
| 916 | 0, /* rightshift */ | |
| 917 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 918 | 16, /* bitsize */ | |
| b34976b6 | 919 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
920 | 0, /* bitpos */ |
| 921 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 922 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 923 | "R_PPC64_TOC16", /* name */ |
| b34976b6 | 924 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
925 | 0, /* src_mask */ |
| 926 | 0xffff, /* dst_mask */ | |
| b34976b6 | 927 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
928 | |
| 929 | /* 16 bit TOC-relative relocation without overflow. */ | |
| 930 | ||
| 931 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
| 932 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
| 933 | 0, /* rightshift */ | |
| 934 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 935 | 16, /* bitsize */ | |
| b34976b6 | 936 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
937 | 0, /* bitpos */ |
| 938 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 939 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 940 | "R_PPC64_TOC16_LO", /* name */ |
| b34976b6 | 941 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
942 | 0, /* src_mask */ |
| 943 | 0xffff, /* dst_mask */ | |
| b34976b6 | 944 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
945 | |
| 946 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
| 947 | ||
| 948 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
| 949 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
| 950 | 16, /* rightshift */ | |
| 951 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 952 | 16, /* bitsize */ | |
| b34976b6 | 953 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
954 | 0, /* bitpos */ |
| 955 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 956 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 957 | "R_PPC64_TOC16_HI", /* name */ |
| b34976b6 | 958 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
959 | 0, /* src_mask */ |
| 960 | 0xffff, /* dst_mask */ | |
| b34976b6 | 961 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
962 | |
| 963 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
| 964 | contents of the low 16 bits, treated as a signed number, is | |
| 965 | negative. */ | |
| 966 | ||
| 967 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
| 968 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
| 969 | 16, /* rightshift */ | |
| 970 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 971 | 16, /* bitsize */ | |
| b34976b6 | 972 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
973 | 0, /* bitpos */ |
| 974 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 975 | ppc64_elf_toc_ha_reloc, /* special_function */ |
| 5bd4f169 | 976 | "R_PPC64_TOC16_HA", /* name */ |
| b34976b6 | 977 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
978 | 0, /* src_mask */ |
| 979 | 0xffff, /* dst_mask */ | |
| b34976b6 | 980 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
981 | |
| 982 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
| 983 | ||
| 984 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
| 985 | HOWTO (R_PPC64_TOC, /* type */ | |
| 986 | 0, /* rightshift */ | |
| 987 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 988 | 64, /* bitsize */ | |
| b34976b6 | 989 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
990 | 0, /* bitpos */ |
| 991 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 992 | ppc64_elf_toc64_reloc, /* special_function */ |
| 5bd4f169 | 993 | "R_PPC64_TOC", /* name */ |
| b34976b6 | 994 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 995 | 0, /* src_mask */ |
| f5e87a1d | 996 | ONES (64), /* dst_mask */ |
| b34976b6 | 997 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
998 | |
| 999 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
| 1000 | value to relocate may (!) refer to a PLT entry which the link | |
| 1001 | editor (a) may replace with the symbol value. If the link editor | |
| 1002 | is unable to fully resolve the symbol, it may (b) create a PLT | |
| 1003 | entry and store the address to the new PLT entry in the GOT. | |
| 1004 | This permits lazy resolution of function symbols at run time. | |
| 1005 | The link editor may also skip all of this and just (c) emit a | |
| 1006 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
| 1007 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
| 1008 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
| 1009 | 0, /* rightshift */ | |
| 1010 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1011 | 16, /* bitsize */ | |
| b34976b6 | 1012 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1013 | 0, /* bitpos */ |
| 1014 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 1015 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb AM |
1016 | "R_PPC64_PLTGOT16", /* name */ |
| 1017 | FALSE, /* partial_inplace */ | |
| 1018 | 0, /* src_mask */ | |
| 1019 | 0xffff, /* dst_mask */ | |
| 1020 | FALSE), /* pcrel_offset */ | |
| 1021 | ||
| 1022 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
| 1023 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1024 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
| 1025 | 0, /* rightshift */ | |
| 1026 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1027 | 16, /* bitsize */ | |
| 1028 | FALSE, /* pc_relative */ | |
| 1029 | 0, /* bitpos */ | |
| 1030 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1031 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1032 | "R_PPC64_PLTGOT16_LO", /* name */ | |
| 1033 | FALSE, /* partial_inplace */ | |
| 1034 | 0, /* src_mask */ | |
| 1035 | 0xffff, /* dst_mask */ | |
| 1036 | FALSE), /* pcrel_offset */ | |
| 1037 | ||
| 1038 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
| 1039 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
| 1040 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
| 1041 | 16, /* rightshift */ | |
| 1042 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1043 | 16, /* bitsize */ | |
| 1044 | FALSE, /* pc_relative */ | |
| 1045 | 0, /* bitpos */ | |
| 1046 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1047 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1048 | "R_PPC64_PLTGOT16_HI", /* name */ | |
| 1049 | FALSE, /* partial_inplace */ | |
| 1050 | 0, /* src_mask */ | |
| 1051 | 0xffff, /* dst_mask */ | |
| 1052 | FALSE), /* pcrel_offset */ | |
| 1053 | ||
| 1054 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
| 1055 | 1 if the contents of the low 16 bits, treated as a signed number, | |
| 1056 | is negative. */ | |
| 1057 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
| 1058 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
| 1059 | 16, /* rightshift */ | |
| 1060 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1061 | 16, /* bitsize */ | |
| 1062 | FALSE, /* pc_relative */ | |
| 1063 | 0, /* bitpos */ | |
| 1064 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1065 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1066 | "R_PPC64_PLTGOT16_HA", /* name */ | |
| 1067 | FALSE, /* partial_inplace */ | |
| 1068 | 0, /* src_mask */ | |
| 1069 | 0xffff, /* dst_mask */ | |
| 1070 | FALSE), /* pcrel_offset */ | |
| 1071 | ||
| 1072 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
| 1073 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
| 1074 | 0, /* rightshift */ | |
| 1075 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1076 | 16, /* bitsize */ | |
| 1077 | FALSE, /* pc_relative */ | |
| 1078 | 0, /* bitpos */ | |
| 1079 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 1080 | bfd_elf_generic_reloc, /* special_function */ | |
| 1081 | "R_PPC64_ADDR16_DS", /* name */ | |
| 1082 | FALSE, /* partial_inplace */ | |
| 1083 | 0, /* src_mask */ | |
| 1084 | 0xfffc, /* dst_mask */ | |
| 1085 | FALSE), /* pcrel_offset */ | |
| 1086 | ||
| 1087 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
| 1088 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
| 1089 | 0, /* rightshift */ | |
| 1090 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1091 | 16, /* bitsize */ | |
| 1092 | FALSE, /* pc_relative */ | |
| 1093 | 0, /* bitpos */ | |
| 1094 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1095 | bfd_elf_generic_reloc, /* special_function */ | |
| 1096 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
| 1097 | FALSE, /* partial_inplace */ | |
| 1098 | 0, /* src_mask */ | |
| 1099 | 0xfffc, /* dst_mask */ | |
| 1100 | FALSE), /* pcrel_offset */ | |
| 1101 | ||
| 1102 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
| 1103 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
| 1104 | 0, /* rightshift */ | |
| 1105 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1106 | 16, /* bitsize */ | |
| 1107 | FALSE, /* pc_relative */ | |
| 1108 | 0, /* bitpos */ | |
| 1109 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1110 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1111 | "R_PPC64_GOT16_DS", /* name */ | |
| 1112 | FALSE, /* partial_inplace */ | |
| 1113 | 0, /* src_mask */ | |
| 1114 | 0xfffc, /* dst_mask */ | |
| 1115 | FALSE), /* pcrel_offset */ | |
| 1116 | ||
| 1117 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
| 1118 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
| 1119 | 0, /* rightshift */ | |
| 1120 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1121 | 16, /* bitsize */ | |
| 1122 | FALSE, /* pc_relative */ | |
| 1123 | 0, /* bitpos */ | |
| 1124 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1125 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1126 | "R_PPC64_GOT16_LO_DS", /* name */ | |
| 1127 | FALSE, /* partial_inplace */ | |
| 1128 | 0, /* src_mask */ | |
| 1129 | 0xfffc, /* dst_mask */ | |
| 1130 | FALSE), /* pcrel_offset */ | |
| 1131 | ||
| 1132 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
| 1133 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
| 1134 | 0, /* rightshift */ | |
| 1135 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1136 | 16, /* bitsize */ | |
| 1137 | FALSE, /* pc_relative */ | |
| 1138 | 0, /* bitpos */ | |
| 1139 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1140 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1141 | "R_PPC64_PLT16_LO_DS", /* name */ | |
| 1142 | FALSE, /* partial_inplace */ | |
| 1143 | 0, /* src_mask */ | |
| 1144 | 0xfffc, /* dst_mask */ | |
| 1145 | FALSE), /* pcrel_offset */ | |
| 1146 | ||
| 1147 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
| 1148 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
| 1149 | 0, /* rightshift */ | |
| 1150 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1151 | 16, /* bitsize */ | |
| 1152 | FALSE, /* pc_relative */ | |
| 1153 | 0, /* bitpos */ | |
| 1154 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 1155 | ppc64_elf_sectoff_reloc, /* special_function */ | |
| 1156 | "R_PPC64_SECTOFF_DS", /* name */ | |
| 1157 | FALSE, /* partial_inplace */ | |
| 1158 | 0, /* src_mask */ | |
| 1159 | 0xfffc, /* dst_mask */ | |
| 1160 | FALSE), /* pcrel_offset */ | |
| 1161 | ||
| 1162 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
| 1163 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
| 1164 | 0, /* rightshift */ | |
| 1165 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1166 | 16, /* bitsize */ | |
| 1167 | FALSE, /* pc_relative */ | |
| 1168 | 0, /* bitpos */ | |
| 1169 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1170 | ppc64_elf_sectoff_reloc, /* special_function */ | |
| 1171 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
| 1172 | FALSE, /* partial_inplace */ | |
| 1173 | 0, /* src_mask */ | |
| 1174 | 0xfffc, /* dst_mask */ | |
| 1175 | FALSE), /* pcrel_offset */ | |
| 1176 | ||
| 1177 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
| 1178 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
| 1179 | 0, /* rightshift */ | |
| 1180 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1181 | 16, /* bitsize */ | |
| 1182 | FALSE, /* pc_relative */ | |
| 1183 | 0, /* bitpos */ | |
| 1184 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1185 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1186 | "R_PPC64_TOC16_DS", /* name */ | |
| 1187 | FALSE, /* partial_inplace */ | |
| 1188 | 0, /* src_mask */ | |
| 1189 | 0xfffc, /* dst_mask */ | |
| 1190 | FALSE), /* pcrel_offset */ | |
| 1191 | ||
| 1192 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
| 1193 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
| 1194 | 0, /* rightshift */ | |
| 1195 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1196 | 16, /* bitsize */ | |
| 1197 | FALSE, /* pc_relative */ | |
| 1198 | 0, /* bitpos */ | |
| 1199 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1200 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1201 | "R_PPC64_TOC16_LO_DS", /* name */ | |
| 1202 | FALSE, /* partial_inplace */ | |
| 1203 | 0, /* src_mask */ | |
| 1204 | 0xfffc, /* dst_mask */ | |
| 1205 | FALSE), /* pcrel_offset */ | |
| 1206 | ||
| 1207 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
| 1208 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
| 6bfdb61b | 1209 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
| 411e1bfb AM |
1210 | 0, /* rightshift */ |
| 1211 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1212 | 16, /* bitsize */ | |
| 1213 | FALSE, /* pc_relative */ | |
| 1214 | 0, /* bitpos */ | |
| 1215 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1216 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1217 | "R_PPC64_PLTGOT16_DS", /* name */ | |
| 1218 | FALSE, /* partial_inplace */ | |
| 1219 | 0, /* src_mask */ | |
| 1220 | 0xfffc, /* dst_mask */ | |
| 1221 | FALSE), /* pcrel_offset */ | |
| 1222 | ||
| 1223 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
| 1224 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1225 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
| 1226 | 0, /* rightshift */ | |
| 1227 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1228 | 16, /* bitsize */ | |
| 1229 | FALSE, /* pc_relative */ | |
| 1230 | 0, /* bitpos */ | |
| 1231 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1232 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1233 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
| 1234 | FALSE, /* partial_inplace */ | |
| 1235 | 0, /* src_mask */ | |
| 1236 | 0xfffc, /* dst_mask */ | |
| 1237 | FALSE), /* pcrel_offset */ | |
| 1238 | ||
| 727fc41e | 1239 | /* Marker relocs for TLS. */ |
| 411e1bfb AM |
1240 | HOWTO (R_PPC64_TLS, |
| 1241 | 0, /* rightshift */ | |
| 1242 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1243 | 32, /* bitsize */ | |
| 1244 | FALSE, /* pc_relative */ | |
| 1245 | 0, /* bitpos */ | |
| 1246 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1247 | bfd_elf_generic_reloc, /* special_function */ | |
| 1248 | "R_PPC64_TLS", /* name */ | |
| 1249 | FALSE, /* partial_inplace */ | |
| 1250 | 0, /* src_mask */ | |
| 1251 | 0, /* dst_mask */ | |
| 1252 | FALSE), /* pcrel_offset */ | |
| 1253 | ||
| 727fc41e AM |
1254 | HOWTO (R_PPC64_TLSGD, |
| 1255 | 0, /* rightshift */ | |
| 1256 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1257 | 32, /* bitsize */ | |
| 1258 | FALSE, /* pc_relative */ | |
| 1259 | 0, /* bitpos */ | |
| 1260 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1261 | bfd_elf_generic_reloc, /* special_function */ | |
| 1262 | "R_PPC64_TLSGD", /* name */ | |
| 1263 | FALSE, /* partial_inplace */ | |
| 1264 | 0, /* src_mask */ | |
| 1265 | 0, /* dst_mask */ | |
| 1266 | FALSE), /* pcrel_offset */ | |
| 1267 | ||
| 1268 | HOWTO (R_PPC64_TLSLD, | |
| 1269 | 0, /* rightshift */ | |
| 1270 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1271 | 32, /* bitsize */ | |
| 1272 | FALSE, /* pc_relative */ | |
| 1273 | 0, /* bitpos */ | |
| 1274 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1275 | bfd_elf_generic_reloc, /* special_function */ | |
| 1276 | "R_PPC64_TLSLD", /* name */ | |
| 1277 | FALSE, /* partial_inplace */ | |
| 1278 | 0, /* src_mask */ | |
| 1279 | 0, /* dst_mask */ | |
| 1280 | FALSE), /* pcrel_offset */ | |
| 1281 | ||
| 411e1bfb AM |
1282 | /* Computes the load module index of the load module that contains the |
| 1283 | definition of its TLS sym. */ | |
| 1284 | HOWTO (R_PPC64_DTPMOD64, | |
| 1285 | 0, /* rightshift */ | |
| 1286 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1287 | 64, /* bitsize */ | |
| 1288 | FALSE, /* pc_relative */ | |
| 1289 | 0, /* bitpos */ | |
| 1290 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1291 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1292 | "R_PPC64_DTPMOD64", /* name */ | |
| 1293 | FALSE, /* partial_inplace */ | |
| 1294 | 0, /* src_mask */ | |
| 1295 | ONES (64), /* dst_mask */ | |
| 1296 | FALSE), /* pcrel_offset */ | |
| 1297 | ||
| 1298 | /* Computes a dtv-relative displacement, the difference between the value | |
| 1299 | of sym+add and the base address of the thread-local storage block that | |
| 1300 | contains the definition of sym, minus 0x8000. */ | |
| 1301 | HOWTO (R_PPC64_DTPREL64, | |
| 1302 | 0, /* rightshift */ | |
| 1303 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1304 | 64, /* bitsize */ | |
| 1305 | FALSE, /* pc_relative */ | |
| 1306 | 0, /* bitpos */ | |
| 1307 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1308 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1309 | "R_PPC64_DTPREL64", /* name */ | |
| 1310 | FALSE, /* partial_inplace */ | |
| 1311 | 0, /* src_mask */ | |
| 1312 | ONES (64), /* dst_mask */ | |
| 1313 | FALSE), /* pcrel_offset */ | |
| 1314 | ||
| 1315 | /* A 16 bit dtprel reloc. */ | |
| 1316 | HOWTO (R_PPC64_DTPREL16, | |
| 1317 | 0, /* rightshift */ | |
| 1318 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1319 | 16, /* bitsize */ | |
| 1320 | FALSE, /* pc_relative */ | |
| 1321 | 0, /* bitpos */ | |
| 1322 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1323 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1324 | "R_PPC64_DTPREL16", /* name */ | |
| 1325 | FALSE, /* partial_inplace */ | |
| 1326 | 0, /* src_mask */ | |
| 1327 | 0xffff, /* dst_mask */ | |
| 1328 | FALSE), /* pcrel_offset */ | |
| 1329 | ||
| 1330 | /* Like DTPREL16, but no overflow. */ | |
| 1331 | HOWTO (R_PPC64_DTPREL16_LO, | |
| 1332 | 0, /* rightshift */ | |
| 1333 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1334 | 16, /* bitsize */ | |
| 1335 | FALSE, /* pc_relative */ | |
| 1336 | 0, /* bitpos */ | |
| 1337 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1338 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1339 | "R_PPC64_DTPREL16_LO", /* name */ | |
| 1340 | FALSE, /* partial_inplace */ | |
| 1341 | 0, /* src_mask */ | |
| 1342 | 0xffff, /* dst_mask */ | |
| 1343 | FALSE), /* pcrel_offset */ | |
| 1344 | ||
| 1345 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
| 1346 | HOWTO (R_PPC64_DTPREL16_HI, | |
| 1347 | 16, /* rightshift */ | |
| 1348 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1349 | 16, /* bitsize */ | |
| 1350 | FALSE, /* pc_relative */ | |
| 1351 | 0, /* bitpos */ | |
| 1352 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1353 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1354 | "R_PPC64_DTPREL16_HI", /* name */ | |
| 1355 | FALSE, /* partial_inplace */ | |
| 1356 | 0, /* src_mask */ | |
| 1357 | 0xffff, /* dst_mask */ | |
| 1358 | FALSE), /* pcrel_offset */ | |
| 1359 | ||
| 1360 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
| 1361 | HOWTO (R_PPC64_DTPREL16_HA, | |
| 1362 | 16, /* rightshift */ | |
| 1363 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1364 | 16, /* bitsize */ | |
| 1365 | FALSE, /* pc_relative */ | |
| 1366 | 0, /* bitpos */ | |
| 1367 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1368 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1369 | "R_PPC64_DTPREL16_HA", /* name */ | |
| 1370 | FALSE, /* partial_inplace */ | |
| 1371 | 0, /* src_mask */ | |
| 1372 | 0xffff, /* dst_mask */ | |
| 1373 | FALSE), /* pcrel_offset */ | |
| 1374 | ||
| 1375 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
| 1376 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
| 1377 | 32, /* rightshift */ | |
| 1378 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1379 | 16, /* bitsize */ | |
| 1380 | FALSE, /* pc_relative */ | |
| 1381 | 0, /* bitpos */ | |
| 1382 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1383 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1384 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
| 1385 | FALSE, /* partial_inplace */ | |
| 1386 | 0, /* src_mask */ | |
| 1387 | 0xffff, /* dst_mask */ | |
| 1388 | FALSE), /* pcrel_offset */ | |
| 1389 | ||
| 1390 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1391 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
| 1392 | 32, /* rightshift */ | |
| 1393 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1394 | 16, /* bitsize */ | |
| 1395 | FALSE, /* pc_relative */ | |
| 1396 | 0, /* bitpos */ | |
| 1397 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1398 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1399 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
| 1400 | FALSE, /* partial_inplace */ | |
| 1401 | 0, /* src_mask */ | |
| 1402 | 0xffff, /* dst_mask */ | |
| 1403 | FALSE), /* pcrel_offset */ | |
| 1404 | ||
| 1405 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1406 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
| 1407 | 48, /* rightshift */ | |
| 1408 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1409 | 16, /* bitsize */ | |
| 1410 | FALSE, /* pc_relative */ | |
| 1411 | 0, /* bitpos */ | |
| 1412 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1413 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1414 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
| 1415 | FALSE, /* partial_inplace */ | |
| 1416 | 0, /* src_mask */ | |
| 1417 | 0xffff, /* dst_mask */ | |
| 1418 | FALSE), /* pcrel_offset */ | |
| 1419 | ||
| 1420 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1421 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
| 1422 | 48, /* rightshift */ | |
| 1423 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1424 | 16, /* bitsize */ | |
| 1425 | FALSE, /* pc_relative */ | |
| 1426 | 0, /* bitpos */ | |
| 1427 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1428 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1429 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
| 1430 | FALSE, /* partial_inplace */ | |
| 1431 | 0, /* src_mask */ | |
| 1432 | 0xffff, /* dst_mask */ | |
| 1433 | FALSE), /* pcrel_offset */ | |
| 1434 | ||
| 1435 | /* Like DTPREL16, but for insns with a DS field. */ | |
| 1436 | HOWTO (R_PPC64_DTPREL16_DS, | |
| 1437 | 0, /* rightshift */ | |
| 1438 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1439 | 16, /* bitsize */ | |
| 1440 | FALSE, /* pc_relative */ | |
| 1441 | 0, /* bitpos */ | |
| 1442 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1443 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1444 | "R_PPC64_DTPREL16_DS", /* name */ | |
| 1445 | FALSE, /* partial_inplace */ | |
| 1446 | 0, /* src_mask */ | |
| 1447 | 0xfffc, /* dst_mask */ | |
| 1448 | FALSE), /* pcrel_offset */ | |
| 1449 | ||
| 1450 | /* Like DTPREL16_DS, but no overflow. */ | |
| 1451 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
| 1452 | 0, /* rightshift */ | |
| 1453 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1454 | 16, /* bitsize */ | |
| 1455 | FALSE, /* pc_relative */ | |
| 1456 | 0, /* bitpos */ | |
| 1457 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1458 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1459 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
| 1460 | FALSE, /* partial_inplace */ | |
| 1461 | 0, /* src_mask */ | |
| 1462 | 0xfffc, /* dst_mask */ | |
| 1463 | FALSE), /* pcrel_offset */ | |
| 1464 | ||
| 1465 | /* Computes a tp-relative displacement, the difference between the value of | |
| 1466 | sym+add and the value of the thread pointer (r13). */ | |
| 1467 | HOWTO (R_PPC64_TPREL64, | |
| 1468 | 0, /* rightshift */ | |
| 1469 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1470 | 64, /* bitsize */ | |
| 1471 | FALSE, /* pc_relative */ | |
| 1472 | 0, /* bitpos */ | |
| 1473 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1474 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1475 | "R_PPC64_TPREL64", /* name */ | |
| 1476 | FALSE, /* partial_inplace */ | |
| 1477 | 0, /* src_mask */ | |
| 1478 | ONES (64), /* dst_mask */ | |
| 1479 | FALSE), /* pcrel_offset */ | |
| 1480 | ||
| 1481 | /* A 16 bit tprel reloc. */ | |
| 1482 | HOWTO (R_PPC64_TPREL16, | |
| 1483 | 0, /* rightshift */ | |
| 1484 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1485 | 16, /* bitsize */ | |
| 1486 | FALSE, /* pc_relative */ | |
| 1487 | 0, /* bitpos */ | |
| 1488 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1489 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1490 | "R_PPC64_TPREL16", /* name */ | |
| 1491 | FALSE, /* partial_inplace */ | |
| 1492 | 0, /* src_mask */ | |
| 1493 | 0xffff, /* dst_mask */ | |
| 1494 | FALSE), /* pcrel_offset */ | |
| 1495 | ||
| 1496 | /* Like TPREL16, but no overflow. */ | |
| 1497 | HOWTO (R_PPC64_TPREL16_LO, | |
| 1498 | 0, /* rightshift */ | |
| 1499 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1500 | 16, /* bitsize */ | |
| 1501 | FALSE, /* pc_relative */ | |
| 1502 | 0, /* bitpos */ | |
| 1503 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1504 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1505 | "R_PPC64_TPREL16_LO", /* name */ | |
| 1506 | FALSE, /* partial_inplace */ | |
| 1507 | 0, /* src_mask */ | |
| 1508 | 0xffff, /* dst_mask */ | |
| 1509 | FALSE), /* pcrel_offset */ | |
| 1510 | ||
| 1511 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
| 1512 | HOWTO (R_PPC64_TPREL16_HI, | |
| 1513 | 16, /* rightshift */ | |
| 1514 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1515 | 16, /* bitsize */ | |
| 1516 | FALSE, /* pc_relative */ | |
| 1517 | 0, /* bitpos */ | |
| 1518 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1519 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1520 | "R_PPC64_TPREL16_HI", /* name */ | |
| 1521 | FALSE, /* partial_inplace */ | |
| 1522 | 0, /* src_mask */ | |
| 1523 | 0xffff, /* dst_mask */ | |
| 1524 | FALSE), /* pcrel_offset */ | |
| 1525 | ||
| 1526 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
| 1527 | HOWTO (R_PPC64_TPREL16_HA, | |
| 1528 | 16, /* rightshift */ | |
| 1529 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1530 | 16, /* bitsize */ | |
| 1531 | FALSE, /* pc_relative */ | |
| 1532 | 0, /* bitpos */ | |
| 1533 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1534 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1535 | "R_PPC64_TPREL16_HA", /* name */ | |
| 1536 | FALSE, /* partial_inplace */ | |
| 1537 | 0, /* src_mask */ | |
| 1538 | 0xffff, /* dst_mask */ | |
| 1539 | FALSE), /* pcrel_offset */ | |
| 1540 | ||
| 1541 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
| 1542 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
| 1543 | 32, /* rightshift */ | |
| 1544 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1545 | 16, /* bitsize */ | |
| 1546 | FALSE, /* pc_relative */ | |
| 1547 | 0, /* bitpos */ | |
| 1548 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1549 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1550 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
| 1551 | FALSE, /* partial_inplace */ | |
| 1552 | 0, /* src_mask */ | |
| 1553 | 0xffff, /* dst_mask */ | |
| 1554 | FALSE), /* pcrel_offset */ | |
| 1555 | ||
| 1556 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1557 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
| 1558 | 32, /* rightshift */ | |
| 1559 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1560 | 16, /* bitsize */ | |
| 1561 | FALSE, /* pc_relative */ | |
| 1562 | 0, /* bitpos */ | |
| 1563 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1564 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1565 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
| 1566 | FALSE, /* partial_inplace */ | |
| 1567 | 0, /* src_mask */ | |
| 1568 | 0xffff, /* dst_mask */ | |
| 1569 | FALSE), /* pcrel_offset */ | |
| 1570 | ||
| 1571 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1572 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
| 1573 | 48, /* rightshift */ | |
| 1574 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1575 | 16, /* bitsize */ | |
| 1576 | FALSE, /* pc_relative */ | |
| 1577 | 0, /* bitpos */ | |
| 1578 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1579 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1580 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
| 1581 | FALSE, /* partial_inplace */ | |
| 1582 | 0, /* src_mask */ | |
| 1583 | 0xffff, /* dst_mask */ | |
| 1584 | FALSE), /* pcrel_offset */ | |
| 1585 | ||
| 1586 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1587 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
| 1588 | 48, /* rightshift */ | |
| 1589 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1590 | 16, /* bitsize */ | |
| 1591 | FALSE, /* pc_relative */ | |
| 1592 | 0, /* bitpos */ | |
| 1593 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1594 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1595 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
| 1596 | FALSE, /* partial_inplace */ | |
| 1597 | 0, /* src_mask */ | |
| 1598 | 0xffff, /* dst_mask */ | |
| 1599 | FALSE), /* pcrel_offset */ | |
| 1600 | ||
| 1601 | /* Like TPREL16, but for insns with a DS field. */ | |
| 1602 | HOWTO (R_PPC64_TPREL16_DS, | |
| 1603 | 0, /* rightshift */ | |
| 1604 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1605 | 16, /* bitsize */ | |
| 1606 | FALSE, /* pc_relative */ | |
| 1607 | 0, /* bitpos */ | |
| 1608 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1609 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1610 | "R_PPC64_TPREL16_DS", /* name */ | |
| 1611 | FALSE, /* partial_inplace */ | |
| 1612 | 0, /* src_mask */ | |
| 1613 | 0xfffc, /* dst_mask */ | |
| 1614 | FALSE), /* pcrel_offset */ | |
| 1615 | ||
| 1616 | /* Like TPREL16_DS, but no overflow. */ | |
| 1617 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
| 1618 | 0, /* rightshift */ | |
| 1619 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1620 | 16, /* bitsize */ | |
| 1621 | FALSE, /* pc_relative */ | |
| 1622 | 0, /* bitpos */ | |
| 1623 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1624 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1625 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
| 1626 | FALSE, /* partial_inplace */ | |
| 1627 | 0, /* src_mask */ | |
| 1628 | 0xfffc, /* dst_mask */ | |
| 1629 | FALSE), /* pcrel_offset */ | |
| 1630 | ||
| 1631 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
| 1632 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
| 1633 | to the first entry relative to the TOC base (r2). */ | |
| 1634 | HOWTO (R_PPC64_GOT_TLSGD16, | |
| 1635 | 0, /* rightshift */ | |
| 1636 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1637 | 16, /* bitsize */ | |
| 1638 | FALSE, /* pc_relative */ | |
| 1639 | 0, /* bitpos */ | |
| 1640 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1641 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1642 | "R_PPC64_GOT_TLSGD16", /* name */ | |
| b34976b6 | 1643 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1644 | 0, /* src_mask */ |
| 1645 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1646 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1647 | |
| 411e1bfb AM |
1648 | /* Like GOT_TLSGD16, but no overflow. */ |
| 1649 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
| 5bd4f169 AM |
1650 | 0, /* rightshift */ |
| 1651 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1652 | 16, /* bitsize */ | |
| b34976b6 | 1653 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1654 | 0, /* bitpos */ |
| 1655 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1656 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1657 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
| b34976b6 | 1658 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1659 | 0, /* src_mask */ |
| 1660 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1661 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1662 | |
| 411e1bfb AM |
1663 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
| 1664 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
| 5bd4f169 AM |
1665 | 16, /* rightshift */ |
| 1666 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1667 | 16, /* bitsize */ | |
| b34976b6 | 1668 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1669 | 0, /* bitpos */ |
| 1670 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1671 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1672 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
| b34976b6 | 1673 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1674 | 0, /* src_mask */ |
| 1675 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1676 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1677 | |
| 411e1bfb AM |
1678 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
| 1679 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
| 5bd4f169 AM |
1680 | 16, /* rightshift */ |
| 1681 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1682 | 16, /* bitsize */ | |
| b34976b6 | 1683 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1684 | 0, /* bitpos */ |
| 411e1bfb | 1685 | complain_overflow_dont, /* complain_on_overflow */ |
| 805fc799 | 1686 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1687 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
| b34976b6 | 1688 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1689 | 0, /* src_mask */ |
| 1690 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1691 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1692 | |
| 411e1bfb AM |
1693 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
| 1694 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
| 1695 | first entry relative to the TOC base (r2). */ | |
| 1696 | HOWTO (R_PPC64_GOT_TLSLD16, | |
| 5bd4f169 AM |
1697 | 0, /* rightshift */ |
| 1698 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1699 | 16, /* bitsize */ | |
| b34976b6 | 1700 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1701 | 0, /* bitpos */ |
| 411e1bfb AM |
1702 | complain_overflow_signed, /* complain_on_overflow */ |
| 1703 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1704 | "R_PPC64_GOT_TLSLD16", /* name */ | |
| b34976b6 | 1705 | FALSE, /* partial_inplace */ |
| d006db6c | 1706 | 0, /* src_mask */ |
| 411e1bfb | 1707 | 0xffff, /* dst_mask */ |
| b34976b6 | 1708 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1709 | |
| 411e1bfb AM |
1710 | /* Like GOT_TLSLD16, but no overflow. */ |
| 1711 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
| 5bd4f169 AM |
1712 | 0, /* rightshift */ |
| 1713 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1714 | 16, /* bitsize */ | |
| b34976b6 | 1715 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1716 | 0, /* bitpos */ |
| 411e1bfb AM |
1717 | complain_overflow_dont, /* complain_on_overflow */ |
| 1718 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1719 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
| b34976b6 | 1720 | FALSE, /* partial_inplace */ |
| d006db6c | 1721 | 0, /* src_mask */ |
| 411e1bfb | 1722 | 0xffff, /* dst_mask */ |
| b34976b6 | 1723 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1724 | |
| 411e1bfb AM |
1725 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
| 1726 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
| 1727 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1728 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1729 | 16, /* bitsize */ | |
| b34976b6 | 1730 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1731 | 0, /* bitpos */ |
| 411e1bfb | 1732 | complain_overflow_dont, /* complain_on_overflow */ |
| 805fc799 | 1733 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1734 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
| b34976b6 | 1735 | FALSE, /* partial_inplace */ |
| d006db6c | 1736 | 0, /* src_mask */ |
| 411e1bfb | 1737 | 0xffff, /* dst_mask */ |
| b34976b6 | 1738 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1739 | |
| 411e1bfb AM |
1740 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
| 1741 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
| 1742 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1743 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1744 | 16, /* bitsize */ | |
| b34976b6 | 1745 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1746 | 0, /* bitpos */ |
| 1747 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1748 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1749 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
| b34976b6 | 1750 | FALSE, /* partial_inplace */ |
| d006db6c | 1751 | 0, /* src_mask */ |
| 411e1bfb | 1752 | 0xffff, /* dst_mask */ |
| b34976b6 | 1753 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1754 | |
| 411e1bfb AM |
1755 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
| 1756 | the offset to the entry relative to the TOC base (r2). */ | |
| 1757 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
| 5bd4f169 AM |
1758 | 0, /* rightshift */ |
| 1759 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1760 | 16, /* bitsize */ | |
| b34976b6 | 1761 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1762 | 0, /* bitpos */ |
| 411e1bfb | 1763 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1764 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1765 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
| b34976b6 | 1766 | FALSE, /* partial_inplace */ |
| d006db6c | 1767 | 0, /* src_mask */ |
| 5bd4f169 | 1768 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1769 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1770 | |
| 411e1bfb AM |
1771 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
| 1772 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
| 5bd4f169 | 1773 | 0, /* rightshift */ |
| c061c2d8 AM |
1774 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1775 | 16, /* bitsize */ | |
| b34976b6 | 1776 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1777 | 0, /* bitpos */ |
| 411e1bfb AM |
1778 | complain_overflow_dont, /* complain_on_overflow */ |
| 1779 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1780 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
| b34976b6 | 1781 | FALSE, /* partial_inplace */ |
| d006db6c | 1782 | 0, /* src_mask */ |
| c061c2d8 | 1783 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1784 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1785 | |
| 411e1bfb AM |
1786 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1787 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
| 1788 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1789 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1790 | 16, /* bitsize */ | |
| b34976b6 | 1791 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1792 | 0, /* bitpos */ |
| 1793 | complain_overflow_dont, /* complain_on_overflow */ | |
| 411e1bfb AM |
1794 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1795 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
| b34976b6 | 1796 | FALSE, /* partial_inplace */ |
| d006db6c | 1797 | 0, /* src_mask */ |
| 411e1bfb | 1798 | 0xffff, /* dst_mask */ |
| b34976b6 | 1799 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1800 | |
| 411e1bfb AM |
1801 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
| 1802 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
| 1803 | 16, /* rightshift */ | |
| 1804 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1805 | 16, /* bitsize */ | |
| 1806 | FALSE, /* pc_relative */ | |
| 1807 | 0, /* bitpos */ | |
| 1808 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1809 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1810 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
| 1811 | FALSE, /* partial_inplace */ | |
| 1812 | 0, /* src_mask */ | |
| 1813 | 0xffff, /* dst_mask */ | |
| 1814 | FALSE), /* pcrel_offset */ | |
| 1815 | ||
| 1816 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
| 1817 | offset to the entry relative to the TOC base (r2). */ | |
| 1818 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
| 5bd4f169 AM |
1819 | 0, /* rightshift */ |
| 1820 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1821 | 16, /* bitsize */ | |
| b34976b6 | 1822 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1823 | 0, /* bitpos */ |
| 1824 | complain_overflow_signed, /* complain_on_overflow */ | |
| 411e1bfb AM |
1825 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1826 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
| b34976b6 | 1827 | FALSE, /* partial_inplace */ |
| d006db6c | 1828 | 0, /* src_mask */ |
| ad8e1ba5 | 1829 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1830 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1831 | |
| 411e1bfb AM |
1832 | /* Like GOT_TPREL16_DS, but no overflow. */ |
| 1833 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
| 5bd4f169 AM |
1834 | 0, /* rightshift */ |
| 1835 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1836 | 16, /* bitsize */ | |
| b34976b6 | 1837 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1838 | 0, /* bitpos */ |
| 1839 | complain_overflow_dont, /* complain_on_overflow */ | |
| 411e1bfb AM |
1840 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1841 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
| b34976b6 | 1842 | FALSE, /* partial_inplace */ |
| d006db6c | 1843 | 0, /* src_mask */ |
| ad8e1ba5 | 1844 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1845 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1846 | |
| 411e1bfb AM |
1847 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1848 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
| 1849 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1850 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1851 | 16, /* bitsize */ | |
| b34976b6 | 1852 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1853 | 0, /* bitpos */ |
| 411e1bfb | 1854 | complain_overflow_dont, /* complain_on_overflow */ |
| 805fc799 | 1855 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1856 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
| b34976b6 | 1857 | FALSE, /* partial_inplace */ |
| d006db6c | 1858 | 0, /* src_mask */ |
| 411e1bfb | 1859 | 0xffff, /* dst_mask */ |
| b34976b6 | 1860 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1861 | |
| 411e1bfb AM |
1862 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
| 1863 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
| 1864 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1865 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1866 | 16, /* bitsize */ | |
| b34976b6 | 1867 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1868 | 0, /* bitpos */ |
| 1869 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1870 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1871 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
| b34976b6 | 1872 | FALSE, /* partial_inplace */ |
| d006db6c | 1873 | 0, /* src_mask */ |
| 411e1bfb | 1874 | 0xffff, /* dst_mask */ |
| b34976b6 | 1875 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1876 | |
| 25f23106 AM |
1877 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
| 1878 | 0, /* rightshift */ | |
| 1879 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1880 | 0, /* bitsize */ | |
| 1881 | FALSE, /* pc_relative */ | |
| 1882 | 0, /* bitpos */ | |
| 1883 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1884 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1885 | "R_PPC64_JMP_IREL", /* name */ | |
| 1886 | FALSE, /* partial_inplace */ | |
| 1887 | 0, /* src_mask */ | |
| 1888 | 0, /* dst_mask */ | |
| 1889 | FALSE), /* pcrel_offset */ | |
| 1890 | ||
| e054468f AM |
1891 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
| 1892 | 0, /* rightshift */ | |
| 1893 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1894 | 64, /* bitsize */ | |
| 1895 | FALSE, /* pc_relative */ | |
| 1896 | 0, /* bitpos */ | |
| 1897 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1898 | bfd_elf_generic_reloc, /* special_function */ | |
| 1899 | "R_PPC64_IRELATIVE", /* name */ | |
| 1900 | FALSE, /* partial_inplace */ | |
| 1901 | 0, /* src_mask */ | |
| 1902 | ONES (64), /* dst_mask */ | |
| 1903 | FALSE), /* pcrel_offset */ | |
| 1904 | ||
| 25f23106 AM |
1905 | /* A 16 bit relative relocation. */ |
| 1906 | HOWTO (R_PPC64_REL16, /* type */ | |
| 1907 | 0, /* rightshift */ | |
| 1908 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1909 | 16, /* bitsize */ | |
| 1910 | TRUE, /* pc_relative */ | |
| 1911 | 0, /* bitpos */ | |
| 1912 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 1913 | bfd_elf_generic_reloc, /* special_function */ | |
| 1914 | "R_PPC64_REL16", /* name */ | |
| 1915 | FALSE, /* partial_inplace */ | |
| 1916 | 0, /* src_mask */ | |
| 1917 | 0xffff, /* dst_mask */ | |
| 1918 | TRUE), /* pcrel_offset */ | |
| 1919 | ||
| 1920 | /* A 16 bit relative relocation without overflow. */ | |
| 1921 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
| 1922 | 0, /* rightshift */ | |
| 1923 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1924 | 16, /* bitsize */ | |
| 1925 | TRUE, /* pc_relative */ | |
| 1926 | 0, /* bitpos */ | |
| 1927 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1928 | bfd_elf_generic_reloc, /* special_function */ | |
| 1929 | "R_PPC64_REL16_LO", /* name */ | |
| 1930 | FALSE, /* partial_inplace */ | |
| 1931 | 0, /* src_mask */ | |
| 1932 | 0xffff, /* dst_mask */ | |
| 1933 | TRUE), /* pcrel_offset */ | |
| 1934 | ||
| 1935 | /* The high order 16 bits of a relative address. */ | |
| 1936 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
| 1937 | 16, /* rightshift */ | |
| 1938 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1939 | 16, /* bitsize */ | |
| 1940 | TRUE, /* pc_relative */ | |
| 1941 | 0, /* bitpos */ | |
| 1942 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1943 | bfd_elf_generic_reloc, /* special_function */ | |
| 1944 | "R_PPC64_REL16_HI", /* name */ | |
| 1945 | FALSE, /* partial_inplace */ | |
| 1946 | 0, /* src_mask */ | |
| 1947 | 0xffff, /* dst_mask */ | |
| 1948 | TRUE), /* pcrel_offset */ | |
| 1949 | ||
| 1950 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
| 1951 | the low 16 bits, treated as a signed number, is negative. */ | |
| 1952 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
| 1953 | 16, /* rightshift */ | |
| 1954 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1955 | 16, /* bitsize */ | |
| 1956 | TRUE, /* pc_relative */ | |
| 1957 | 0, /* bitpos */ | |
| 1958 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1959 | ppc64_elf_ha_reloc, /* special_function */ | |
| 1960 | "R_PPC64_REL16_HA", /* name */ | |
| 1961 | FALSE, /* partial_inplace */ | |
| 1962 | 0, /* src_mask */ | |
| 1963 | 0xffff, /* dst_mask */ | |
| 1964 | TRUE), /* pcrel_offset */ | |
| 1965 | ||
| 5bd4f169 AM |
1966 | /* GNU extension to record C++ vtable hierarchy. */ |
| 1967 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
| 1968 | 0, /* rightshift */ | |
| 1969 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1970 | 0, /* bitsize */ | |
| b34976b6 | 1971 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1972 | 0, /* bitpos */ |
| 1973 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1974 | NULL, /* special_function */ | |
| 1975 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
| b34976b6 | 1976 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1977 | 0, /* src_mask */ |
| 1978 | 0, /* dst_mask */ | |
| b34976b6 | 1979 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1980 | |
| 1981 | /* GNU extension to record C++ vtable member usage. */ | |
| 1982 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
| 1983 | 0, /* rightshift */ | |
| 1984 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1985 | 0, /* bitsize */ | |
| b34976b6 | 1986 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1987 | 0, /* bitpos */ |
| 1988 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1989 | NULL, /* special_function */ | |
| 1990 | "R_PPC64_GNU_VTENTRY", /* name */ | |
| b34976b6 | 1991 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1992 | 0, /* src_mask */ |
| 1993 | 0, /* dst_mask */ | |
| b34976b6 | 1994 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1995 | }; |
| 1996 | ||
| 1997 | \f | |
| 1998 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
| 1999 | be done. */ | |
| 2000 | ||
| 2001 | static void | |
| 4ce794b7 | 2002 | ppc_howto_init (void) |
| 5bd4f169 AM |
2003 | { |
| 2004 | unsigned int i, type; | |
| 2005 | ||
| 2006 | for (i = 0; | |
| 2007 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
| 2008 | i++) | |
| 2009 | { | |
| 2010 | type = ppc64_elf_howto_raw[i].type; | |
| 2011 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
| 2012 | / sizeof (ppc64_elf_howto_table[0]))); | |
| 2013 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
| 2014 | } | |
| 2015 | } | |
| 2016 | ||
| 2017 | static reloc_howto_type * | |
| 4ce794b7 AM |
2018 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 2019 | bfd_reloc_code_real_type code) | |
| 5bd4f169 | 2020 | { |
| 411e1bfb | 2021 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
| 5bd4f169 AM |
2022 | |
| 2023 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
| 2024 | /* Initialize howto table if needed. */ | |
| 2025 | ppc_howto_init (); | |
| 2026 | ||
| 4ce794b7 | 2027 | switch (code) |
| 5bd4f169 AM |
2028 | { |
| 2029 | default: | |
| 4ce794b7 | 2030 | return NULL; |
| 5bd4f169 | 2031 | |
| 411e1bfb AM |
2032 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
| 2033 | break; | |
| 2034 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
| 2035 | break; | |
| 2036 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
| 2037 | break; | |
| 2038 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
| 2039 | break; | |
| 2040 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
| 2041 | break; | |
| 2042 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
| 2043 | break; | |
| 2044 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
| 5bd4f169 | 2045 | break; |
| 411e1bfb | 2046 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
| 5bd4f169 | 2047 | break; |
| 411e1bfb | 2048 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
| 5bd4f169 | 2049 | break; |
| 411e1bfb | 2050 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
| 5bd4f169 | 2051 | break; |
| 411e1bfb | 2052 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
| 5bd4f169 | 2053 | break; |
| 411e1bfb | 2054 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
| 5bd4f169 | 2055 | break; |
| 411e1bfb | 2056 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
| 5bd4f169 | 2057 | break; |
| 411e1bfb | 2058 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
| 5bd4f169 | 2059 | break; |
| 411e1bfb | 2060 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
| 5bd4f169 | 2061 | break; |
| 411e1bfb | 2062 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
| 5bd4f169 | 2063 | break; |
| 411e1bfb | 2064 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
| 5bd4f169 | 2065 | break; |
| 411e1bfb | 2066 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
| 5bd4f169 | 2067 | break; |
| 411e1bfb | 2068 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
| 5bd4f169 | 2069 | break; |
| 411e1bfb | 2070 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
| 5bd4f169 | 2071 | break; |
| 411e1bfb | 2072 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
| 5bd4f169 | 2073 | break; |
| 411e1bfb | 2074 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
| 5bd4f169 | 2075 | break; |
| 411e1bfb | 2076 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
| 5bd4f169 | 2077 | break; |
| 411e1bfb | 2078 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
| 5bd4f169 | 2079 | break; |
| 411e1bfb | 2080 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
| 5bd4f169 | 2081 | break; |
| 411e1bfb | 2082 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
| 5bd4f169 | 2083 | break; |
| 411e1bfb | 2084 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
| 5bd4f169 | 2085 | break; |
| 411e1bfb | 2086 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
| 5bd4f169 | 2087 | break; |
| 411e1bfb | 2088 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
| 5bd4f169 | 2089 | break; |
| 411e1bfb | 2090 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
| 5bd4f169 | 2091 | break; |
| 411e1bfb | 2092 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2093 | break; |
| 411e1bfb | 2094 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2095 | break; |
| 411e1bfb | 2096 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
| 5bd4f169 | 2097 | break; |
| 411e1bfb | 2098 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
| 5bd4f169 | 2099 | break; |
| 411e1bfb | 2100 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
| 5bd4f169 | 2101 | break; |
| 411e1bfb | 2102 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
| 5bd4f169 | 2103 | break; |
| 411e1bfb | 2104 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
| 5bd4f169 | 2105 | break; |
| 411e1bfb | 2106 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
| 5bd4f169 | 2107 | break; |
| 411e1bfb | 2108 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
| 5bd4f169 | 2109 | break; |
| 411e1bfb | 2110 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
| 5bd4f169 | 2111 | break; |
| 411e1bfb | 2112 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
| 5bd4f169 | 2113 | break; |
| 411e1bfb | 2114 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
| 5bd4f169 | 2115 | break; |
| 411e1bfb | 2116 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
| 5bd4f169 | 2117 | break; |
| 411e1bfb | 2118 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
| 5bd4f169 | 2119 | break; |
| 411e1bfb | 2120 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
| 5bd4f169 | 2121 | break; |
| 411e1bfb | 2122 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
| 5bd4f169 | 2123 | break; |
| 411e1bfb | 2124 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
| 5bd4f169 | 2125 | break; |
| 411e1bfb | 2126 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
| 5bd4f169 | 2127 | break; |
| 411e1bfb | 2128 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
| 5bd4f169 | 2129 | break; |
| 411e1bfb | 2130 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
| 5bd4f169 | 2131 | break; |
| 411e1bfb | 2132 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
| 5bd4f169 | 2133 | break; |
| 411e1bfb | 2134 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
| 5bd4f169 | 2135 | break; |
| 411e1bfb | 2136 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
| 5bd4f169 | 2137 | break; |
| 411e1bfb | 2138 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
| 5bd4f169 | 2139 | break; |
| 411e1bfb | 2140 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
| 5bd4f169 | 2141 | break; |
| 411e1bfb | 2142 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
| 5bd4f169 | 2143 | break; |
| 411e1bfb | 2144 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
| 5bd4f169 | 2145 | break; |
| 411e1bfb | 2146 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
| 5bd4f169 | 2147 | break; |
| 411e1bfb | 2148 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
| 5bd4f169 | 2149 | break; |
| 411e1bfb | 2150 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
| 5bd4f169 | 2151 | break; |
| 727fc41e AM |
2152 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
| 2153 | break; | |
| 2154 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
| 2155 | break; | |
| 411e1bfb | 2156 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
| 5bd4f169 | 2157 | break; |
| 411e1bfb | 2158 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
| 5bd4f169 | 2159 | break; |
| 411e1bfb | 2160 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
| 5bd4f169 | 2161 | break; |
| 411e1bfb | 2162 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
| 5bd4f169 | 2163 | break; |
| 411e1bfb | 2164 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
| 5bd4f169 | 2165 | break; |
| 411e1bfb | 2166 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
| 5bd4f169 | 2167 | break; |
| 411e1bfb AM |
2168 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
| 2169 | break; | |
| 2170 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
| 2171 | break; | |
| 2172 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
| 2173 | break; | |
| 2174 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
| 2175 | break; | |
| 2176 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
| 2177 | break; | |
| 2178 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
| 2179 | break; | |
| 2180 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
| 2181 | break; | |
| 2182 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
| 2183 | break; | |
| 2184 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
| 2185 | break; | |
| 2186 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
| 2187 | break; | |
| 2188 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
| 2189 | break; | |
| 2190 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
| 2191 | break; | |
| 2192 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
| 2193 | break; | |
| 2194 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
| 2195 | break; | |
| 2196 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
| 2197 | break; | |
| 2198 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
| 2199 | break; | |
| 2200 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
| 2201 | break; | |
| 2202 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
| 2203 | break; | |
| 2204 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
| 2205 | break; | |
| 2206 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
| 2207 | break; | |
| 2208 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
| 2209 | break; | |
| 2210 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
| 2211 | break; | |
| 2212 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
| 2213 | break; | |
| 2214 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
| 2215 | break; | |
| 2216 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
| 2217 | break; | |
| 2218 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
| 2219 | break; | |
| 2220 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
| 2221 | break; | |
| 2222 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
| 2223 | break; | |
| 2224 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
| 2225 | break; | |
| 2226 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
| 2227 | break; | |
| 2228 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
| 2229 | break; | |
| 2230 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
| 2231 | break; | |
| 2232 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
| 2233 | break; | |
| 25f23106 AM |
2234 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
| 2235 | break; | |
| 2236 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
| 2237 | break; | |
| 2238 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
| 2239 | break; | |
| 2240 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
| 2241 | break; | |
| 411e1bfb AM |
2242 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
| 2243 | break; | |
| 2244 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
| 5bd4f169 AM |
2245 | break; |
| 2246 | } | |
| 2247 | ||
| 4ce794b7 | 2248 | return ppc64_elf_howto_table[r]; |
| 5bd4f169 AM |
2249 | }; |
| 2250 | ||
| 157090f7 AM |
2251 | static reloc_howto_type * |
| 2252 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
| 2253 | const char *r_name) | |
| 2254 | { | |
| 2255 | unsigned int i; | |
| 2256 | ||
| 2257 | for (i = 0; | |
| 2258 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
| 2259 | i++) | |
| 2260 | if (ppc64_elf_howto_raw[i].name != NULL | |
| 2261 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
| 2262 | return &ppc64_elf_howto_raw[i]; | |
| 2263 | ||
| 2264 | return NULL; | |
| 2265 | } | |
| 2266 | ||
| 5bd4f169 AM |
2267 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
| 2268 | ||
| 2269 | static void | |
| 4ce794b7 AM |
2270 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
| 2271 | Elf_Internal_Rela *dst) | |
| 5bd4f169 | 2272 | { |
| 65f38f15 AM |
2273 | unsigned int type; |
| 2274 | ||
| ef60b7ff | 2275 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 2276 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
2277 | ppc_howto_init (); |
| 2278 | ||
| 65f38f15 | 2279 | type = ELF64_R_TYPE (dst->r_info); |
| d0fb9a8d JJ |
2280 | if (type >= (sizeof (ppc64_elf_howto_table) |
| 2281 | / sizeof (ppc64_elf_howto_table[0]))) | |
| 2282 | { | |
| 2283 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
| 3ec2b351 NC |
2284 | abfd, (int) type); |
| 2285 | type = R_PPC64_NONE; | |
| d0fb9a8d | 2286 | } |
| 65f38f15 | 2287 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
| 5bd4f169 AM |
2288 | } |
| 2289 | ||
| 04c9666a | 2290 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
| 5bd4f169 AM |
2291 | |
| 2292 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2293 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2294 | void *data, asection *input_section, | |
| 2295 | bfd *output_bfd, char **error_message) | |
| 5bd4f169 | 2296 | { |
| 805fc799 AM |
2297 | /* If this is a relocatable link (output_bfd test tells us), just |
| 2298 | call the generic function. Any adjustment will be done at final | |
| 2299 | link time. */ | |
| 2300 | if (output_bfd != NULL) | |
| cedb70c5 | 2301 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2302 | input_section, output_bfd, error_message); |
| 2303 | ||
| 2304 | /* Adjust the addend for sign extension of the low 16 bits. | |
| 2305 | We won't actually be using the low 16 bits, so trashing them | |
| 2306 | doesn't matter. */ | |
| 2307 | reloc_entry->addend += 0x8000; | |
| 2308 | return bfd_reloc_continue; | |
| 2309 | } | |
| 5bd4f169 | 2310 | |
| 2441e016 AM |
2311 | static bfd_reloc_status_type |
| 2312 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
| 2313 | void *data, asection *input_section, | |
| 2314 | bfd *output_bfd, char **error_message) | |
| 2315 | { | |
| 2316 | if (output_bfd != NULL) | |
| 2317 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
| 2318 | input_section, output_bfd, error_message); | |
| 2319 | ||
| 699733f6 AM |
2320 | if (strcmp (symbol->section->name, ".opd") == 0 |
| 2321 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
| 2441e016 AM |
2322 | { |
| 2323 | bfd_vma dest = opd_entry_value (symbol->section, | |
| 2324 | symbol->value + reloc_entry->addend, | |
| 2325 | NULL, NULL); | |
| 2326 | if (dest != (bfd_vma) -1) | |
| 2327 | reloc_entry->addend = dest - (symbol->value | |
| 2328 | + symbol->section->output_section->vma | |
| 2329 | + symbol->section->output_offset); | |
| 2330 | } | |
| 2331 | return bfd_reloc_continue; | |
| 2332 | } | |
| 2333 | ||
| 805fc799 | 2334 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2335 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2336 | void *data, asection *input_section, | |
| 2337 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2338 | { |
| 2339 | long insn; | |
| 04c9666a | 2340 | enum elf_ppc64_reloc_type r_type; |
| 805fc799 AM |
2341 | bfd_size_type octets; |
| 2342 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
| b34976b6 | 2343 | bfd_boolean is_power4 = FALSE; |
| 805fc799 AM |
2344 | |
| 2345 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2346 | call the generic function. Any adjustment will be done at final | |
| 2347 | link time. */ | |
| 5bd4f169 | 2348 | if (output_bfd != NULL) |
| cedb70c5 | 2349 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2350 | input_section, output_bfd, error_message); |
| 2351 | ||
| 2352 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2353 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
| 2354 | insn &= ~(0x01 << 21); | |
| 4ce794b7 | 2355 | r_type = reloc_entry->howto->type; |
| 805fc799 AM |
2356 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
| 2357 | || r_type == R_PPC64_REL14_BRTAKEN) | |
| cedb70c5 | 2358 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 805fc799 AM |
2359 | |
| 2360 | if (is_power4) | |
| 5bd4f169 | 2361 | { |
| 805fc799 AM |
2362 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 2363 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 2364 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 2365 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 2366 | insn |= 0x02 << 21; | |
| 2367 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 2368 | insn |= 0x08 << 21; | |
| 2369 | else | |
| 2441e016 | 2370 | goto out; |
| 5bd4f169 | 2371 | } |
| 805fc799 AM |
2372 | else |
| 2373 | { | |
| 2374 | bfd_vma target = 0; | |
| 2375 | bfd_vma from; | |
| 5bd4f169 | 2376 | |
| 805fc799 AM |
2377 | if (!bfd_is_com_section (symbol->section)) |
| 2378 | target = symbol->value; | |
| 2379 | target += symbol->section->output_section->vma; | |
| 2380 | target += symbol->section->output_offset; | |
| 2381 | target += reloc_entry->addend; | |
| 5bd4f169 | 2382 | |
| 805fc799 AM |
2383 | from = (reloc_entry->address |
| 2384 | + input_section->output_offset | |
| 2385 | + input_section->output_section->vma); | |
| 5bd4f169 | 2386 | |
| 805fc799 AM |
2387 | /* Invert 'y' bit if not the default. */ |
| 2388 | if ((bfd_signed_vma) (target - from) < 0) | |
| 2389 | insn ^= 0x01 << 21; | |
| 2390 | } | |
| 4ce794b7 | 2391 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
| 2441e016 AM |
2392 | out: |
| 2393 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
| 2394 | input_section, output_bfd, error_message); | |
| 805fc799 | 2395 | } |
| 5bd4f169 | 2396 | |
| 805fc799 | 2397 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2398 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2399 | void *data, asection *input_section, | |
| 2400 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2401 | { |
| 2402 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2403 | call the generic function. Any adjustment will be done at final | |
| 2404 | link time. */ | |
| 2405 | if (output_bfd != NULL) | |
| cedb70c5 | 2406 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 | 2407 | input_section, output_bfd, error_message); |
| 5bd4f169 | 2408 | |
| 805fc799 AM |
2409 | /* Subtract the symbol section base address. */ |
| 2410 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 5bd4f169 AM |
2411 | return bfd_reloc_continue; |
| 2412 | } | |
| 2413 | ||
| 805fc799 | 2414 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2415 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2416 | void *data, asection *input_section, | |
| 2417 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2418 | { |
| 2419 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2420 | call the generic function. Any adjustment will be done at final | |
| 2421 | link time. */ | |
| 2422 | if (output_bfd != NULL) | |
| cedb70c5 | 2423 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2424 | input_section, output_bfd, error_message); |
| 2425 | ||
| 2426 | /* Subtract the symbol section base address. */ | |
| 2427 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 2428 | ||
| 2429 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2430 | reloc_entry->addend += 0x8000; | |
| 2431 | return bfd_reloc_continue; | |
| 2432 | } | |
| 2433 | ||
| 2434 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2435 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2436 | void *data, asection *input_section, | |
| 2437 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2438 | { |
| 2439 | bfd_vma TOCstart; | |
| 2440 | ||
| 2441 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2442 | call the generic function. Any adjustment will be done at final | |
| 2443 | link time. */ | |
| 2444 | if (output_bfd != NULL) | |
| cedb70c5 | 2445 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2446 | input_section, output_bfd, error_message); |
| 2447 | ||
| 2448 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2449 | if (TOCstart == 0) | |
| 2450 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
| 2451 | ||
| 2452 | /* Subtract the TOC base address. */ | |
| 2453 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2454 | return bfd_reloc_continue; | |
| 2455 | } | |
| 2456 | ||
| 2457 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2458 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2459 | void *data, asection *input_section, | |
| 2460 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2461 | { |
| 2462 | bfd_vma TOCstart; | |
| 2463 | ||
| 2464 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2465 | call the generic function. Any adjustment will be done at final | |
| 2466 | link time. */ | |
| 2467 | if (output_bfd != NULL) | |
| cedb70c5 | 2468 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2469 | input_section, output_bfd, error_message); |
| 2470 | ||
| 2471 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2472 | if (TOCstart == 0) | |
| 2473 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
| 2474 | ||
| 2475 | /* Subtract the TOC base address. */ | |
| 2476 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2477 | ||
| 2478 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2479 | reloc_entry->addend += 0x8000; | |
| 2480 | return bfd_reloc_continue; | |
| 2481 | } | |
| 2482 | ||
| 2483 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2484 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2485 | void *data, asection *input_section, | |
| 2486 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2487 | { |
| 2488 | bfd_vma TOCstart; | |
| 2489 | bfd_size_type octets; | |
| 2490 | ||
| 2491 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2492 | call the generic function. Any adjustment will be done at final | |
| 2493 | link time. */ | |
| 2494 | if (output_bfd != NULL) | |
| cedb70c5 | 2495 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2496 | input_section, output_bfd, error_message); |
| 2497 | ||
| 2498 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2499 | if (TOCstart == 0) | |
| 2500 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
| 2501 | ||
| 2502 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2503 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
| 2504 | return bfd_reloc_ok; | |
| 2505 | } | |
| 2506 | ||
| 2507 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2508 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2509 | void *data, asection *input_section, | |
| 2510 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2511 | { |
| 2512 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2513 | call the generic function. Any adjustment will be done at final | |
| 2514 | link time. */ | |
| 2515 | if (output_bfd != NULL) | |
| cedb70c5 | 2516 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2517 | input_section, output_bfd, error_message); |
| 2518 | ||
| 2519 | if (error_message != NULL) | |
| 2520 | { | |
| 2521 | static char buf[60]; | |
| 2522 | sprintf (buf, "generic linker can't handle %s", | |
| 2523 | reloc_entry->howto->name); | |
| 2524 | *error_message = buf; | |
| 2525 | } | |
| 2526 | return bfd_reloc_dangerous; | |
| 2527 | } | |
| 2528 | ||
| e717da7e AM |
2529 | struct ppc64_elf_obj_tdata |
| 2530 | { | |
| 2531 | struct elf_obj_tdata elf; | |
| 2532 | ||
| 2533 | /* Shortcuts to dynamic linker sections. */ | |
| 2534 | asection *got; | |
| 2535 | asection *relgot; | |
| 2536 | ||
| b3fac117 AM |
2537 | /* Used during garbage collection. We attach global symbols defined |
| 2538 | on removed .opd entries to this section so that the sym is removed. */ | |
| 2539 | asection *deleted_section; | |
| 81688140 | 2540 | |
| e717da7e AM |
2541 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
| 2542 | sections means we potentially need one of these for each input bfd. */ | |
| 2543 | union { | |
| 2544 | bfd_signed_vma refcount; | |
| 2545 | bfd_vma offset; | |
| 2546 | } tlsld_got; | |
| 8860955f AM |
2547 | |
| 2548 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
| 2549 | Elf_Internal_Rela *opd_relocs; | |
| e717da7e AM |
2550 | }; |
| 2551 | ||
| 2552 | #define ppc64_elf_tdata(bfd) \ | |
| 2553 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
| 2554 | ||
| 2555 | #define ppc64_tlsld_got(bfd) \ | |
| 2556 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
| 2557 | ||
| 0c8d6e5c AM |
2558 | #define is_ppc64_elf(bfd) \ |
| 2559 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
| 2560 | && elf_object_id (bfd) == PPC64_ELF_TDATA) | |
| 2561 | ||
| e717da7e AM |
2562 | /* Override the generic function because we store some extras. */ |
| 2563 | ||
| 2564 | static bfd_boolean | |
| 2565 | ppc64_elf_mkobject (bfd *abfd) | |
| 2566 | { | |
| 0ffa91dd NC |
2567 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
| 2568 | PPC64_ELF_TDATA); | |
| e717da7e AM |
2569 | } |
| 2570 | ||
| feee612b AM |
2571 | /* Fix bad default arch selected for a 64 bit input bfd when the |
| 2572 | default is 32 bit. */ | |
| 2573 | ||
| b34976b6 | 2574 | static bfd_boolean |
| 4ce794b7 | 2575 | ppc64_elf_object_p (bfd *abfd) |
| feee612b AM |
2576 | { |
| 2577 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
| 2578 | { | |
| 2579 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
| 2580 | ||
| 2581 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
| 2582 | { | |
| 2583 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
| 2584 | abfd->arch_info = abfd->arch_info->next; | |
| 2585 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
| 2586 | } | |
| 2587 | } | |
| b34976b6 | 2588 | return TRUE; |
| feee612b AM |
2589 | } |
| 2590 | ||
| d37c89e5 AM |
2591 | /* Support for core dump NOTE sections. */ |
| 2592 | ||
| 2593 | static bfd_boolean | |
| 2594 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
| 2595 | { | |
| eea6121a | 2596 | size_t offset, size; |
| d37c89e5 AM |
2597 | |
| 2598 | if (note->descsz != 504) | |
| 2599 | return FALSE; | |
| 2600 | ||
| 2601 | /* pr_cursig */ | |
| 2602 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
| 2603 | ||
| 2604 | /* pr_pid */ | |
| 2605 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
| 2606 | ||
| 2607 | /* pr_reg */ | |
| 2608 | offset = 112; | |
| eea6121a | 2609 | size = 384; |
| d37c89e5 AM |
2610 | |
| 2611 | /* Make a ".reg/999" section. */ | |
| 2612 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
| eea6121a | 2613 | size, note->descpos + offset); |
| d37c89e5 AM |
2614 | } |
| 2615 | ||
| 2616 | static bfd_boolean | |
| 2617 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
| 2618 | { | |
| 2619 | if (note->descsz != 136) | |
| 2620 | return FALSE; | |
| 2621 | ||
| 2622 | elf_tdata (abfd)->core_program | |
| 2623 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
| 2624 | elf_tdata (abfd)->core_command | |
| 2625 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
| 2626 | ||
| 2627 | return TRUE; | |
| 2628 | } | |
| 2629 | ||
| 183e98be AM |
2630 | static char * |
| 2631 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
| 2632 | ...) | |
| 2633 | { | |
| 2634 | switch (note_type) | |
| 2635 | { | |
| 2636 | default: | |
| 2637 | return NULL; | |
| 2638 | ||
| 2639 | case NT_PRPSINFO: | |
| 2640 | { | |
| 2641 | char data[136]; | |
| 2642 | va_list ap; | |
| 2643 | ||
| 2644 | va_start (ap, note_type); | |
| 2645 | memset (data, 0, 40); | |
| 2646 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
| 2647 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
| 2648 | va_end (ap); | |
| 2649 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2650 | "CORE", note_type, data, sizeof (data)); | |
| 2651 | } | |
| 2652 | ||
| 2653 | case NT_PRSTATUS: | |
| 2654 | { | |
| 2655 | char data[504]; | |
| 2656 | va_list ap; | |
| 2657 | long pid; | |
| 2658 | int cursig; | |
| 2659 | const void *greg; | |
| 2660 | ||
| 2661 | va_start (ap, note_type); | |
| 2662 | memset (data, 0, 112); | |
| 2663 | pid = va_arg (ap, long); | |
| 2664 | bfd_put_32 (abfd, pid, data + 32); | |
| 2665 | cursig = va_arg (ap, int); | |
| 2666 | bfd_put_16 (abfd, cursig, data + 12); | |
| 2667 | greg = va_arg (ap, const void *); | |
| 2668 | memcpy (data + 112, greg, 384); | |
| 2669 | memset (data + 496, 0, 8); | |
| 2670 | va_end (ap); | |
| 2671 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2672 | "CORE", note_type, data, sizeof (data)); | |
| 2673 | } | |
| 2674 | } | |
| 2675 | } | |
| 2676 | ||
| 5bd4f169 AM |
2677 | /* Merge backend specific data from an object file to the output |
| 2678 | object file when linking. */ | |
| 2f6d9989 | 2679 | |
| b34976b6 | 2680 | static bfd_boolean |
| 4ce794b7 | 2681 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 5bd4f169 | 2682 | { |
| 5bd4f169 AM |
2683 | /* Check if we have the same endianess. */ |
| 2684 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
| 87e226ce | 2685 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
| 5bd4f169 AM |
2686 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
| 2687 | { | |
| 2688 | const char *msg; | |
| 2689 | ||
| 2690 | if (bfd_big_endian (ibfd)) | |
| d003868e | 2691 | msg = _("%B: compiled for a big endian system " |
| 4ce794b7 | 2692 | "and target is little endian"); |
| 5bd4f169 | 2693 | else |
| d003868e | 2694 | msg = _("%B: compiled for a little endian system " |
| 4ce794b7 | 2695 | "and target is big endian"); |
| 5bd4f169 | 2696 | |
| d003868e | 2697 | (*_bfd_error_handler) (msg, ibfd); |
| 5bd4f169 AM |
2698 | |
| 2699 | bfd_set_error (bfd_error_wrong_format); | |
| b34976b6 | 2700 | return FALSE; |
| 5bd4f169 AM |
2701 | } |
| 2702 | ||
| b34976b6 | 2703 | return TRUE; |
| 5bd4f169 | 2704 | } |
| f0abc2a1 | 2705 | |
| 5d35169e AM |
2706 | /* Add extra PPC sections. */ |
| 2707 | ||
| b35d266b | 2708 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
| 7f4d3958 | 2709 | { |
| 0112cd26 NC |
2710 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
| 2711 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2712 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2713 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2714 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2715 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2716 | { NULL, 0, 0, 0, 0 } | |
| 5d35169e AM |
2717 | }; |
| 2718 | ||
| 7c8fe5c4 AM |
2719 | enum _ppc64_sec_type { |
| 2720 | sec_normal = 0, | |
| 2721 | sec_opd = 1, | |
| 2722 | sec_toc = 2 | |
| 2723 | }; | |
| 2724 | ||
| f0abc2a1 AM |
2725 | struct _ppc64_elf_section_data |
| 2726 | { | |
| 2727 | struct bfd_elf_section_data elf; | |
| 411e1bfb | 2728 | |
| f0abc2a1 AM |
2729 | union |
| 2730 | { | |
| 74f0fb50 AM |
2731 | /* An array with one entry for each opd function descriptor. */ |
| 2732 | struct _opd_sec_data | |
| 2733 | { | |
| 2734 | /* Points to the function code section for local opd entries. */ | |
| 2735 | asection **func_sec; | |
| 2736 | ||
| 2737 | /* After editing .opd, adjust references to opd local syms. */ | |
| 2738 | long *adjust; | |
| 2739 | } opd; | |
| 7c8fe5c4 | 2740 | |
| 3a71aa26 AM |
2741 | /* An array for toc sections, indexed by offset/8. */ |
| 2742 | struct _toc_sec_data | |
| 2743 | { | |
| 2744 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
| 2745 | unsigned *symndx; | |
| 2746 | ||
| 2747 | /* And the relocation addend. */ | |
| 2748 | bfd_vma *add; | |
| 2749 | } toc; | |
| 7c8fe5c4 AM |
2750 | } u; |
| 2751 | ||
| 2752 | enum _ppc64_sec_type sec_type:2; | |
| 411e1bfb | 2753 | |
| 7c8fe5c4 AM |
2754 | /* Flag set when small branches are detected. Used to |
| 2755 | select suitable defaults for the stub group size. */ | |
| 2756 | unsigned int has_14bit_branch:1; | |
| f0abc2a1 AM |
2757 | }; |
| 2758 | ||
| 2759 | #define ppc64_elf_section_data(sec) \ | |
| 411e1bfb | 2760 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
| f0abc2a1 AM |
2761 | |
| 2762 | static bfd_boolean | |
| 4ce794b7 | 2763 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
| f0abc2a1 | 2764 | { |
| f592407e AM |
2765 | if (!sec->used_by_bfd) |
| 2766 | { | |
| 2767 | struct _ppc64_elf_section_data *sdata; | |
| 2768 | bfd_size_type amt = sizeof (*sdata); | |
| f0abc2a1 | 2769 | |
| f592407e AM |
2770 | sdata = bfd_zalloc (abfd, amt); |
| 2771 | if (sdata == NULL) | |
| 2772 | return FALSE; | |
| 2773 | sec->used_by_bfd = sdata; | |
| 2774 | } | |
| f0abc2a1 AM |
2775 | |
| 2776 | return _bfd_elf_new_section_hook (abfd, sec); | |
| 2777 | } | |
| 4025353c | 2778 | |
| 74f0fb50 | 2779 | static struct _opd_sec_data * |
| 4025353c AM |
2780 | get_opd_info (asection * sec) |
| 2781 | { | |
| 2782 | if (sec != NULL | |
| 2783 | && ppc64_elf_section_data (sec) != NULL | |
| 7c8fe5c4 | 2784 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
| 74f0fb50 | 2785 | return &ppc64_elf_section_data (sec)->u.opd; |
| 4025353c AM |
2786 | return NULL; |
| 2787 | } | |
| 90e3cdf2 JJ |
2788 | \f |
| 2789 | /* Parameters for the qsort hook. */ | |
| 90e3cdf2 JJ |
2790 | static bfd_boolean synthetic_relocatable; |
| 2791 | ||
| 699733f6 | 2792 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
| 90e3cdf2 JJ |
2793 | |
| 2794 | static int | |
| 2795 | compare_symbols (const void *ap, const void *bp) | |
| 2796 | { | |
| 2797 | const asymbol *a = * (const asymbol **) ap; | |
| 2798 | const asymbol *b = * (const asymbol **) bp; | |
| 2799 | ||
| 699733f6 AM |
2800 | /* Section symbols first. */ |
| 2801 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
| 90e3cdf2 | 2802 | return -1; |
| 699733f6 | 2803 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
| 90e3cdf2 JJ |
2804 | return 1; |
| 2805 | ||
| 699733f6 | 2806 | /* then .opd symbols. */ |
| ffcfec52 AM |
2807 | if (strcmp (a->section->name, ".opd") == 0 |
| 2808 | && strcmp (b->section->name, ".opd") != 0) | |
| 90e3cdf2 | 2809 | return -1; |
| ffcfec52 AM |
2810 | if (strcmp (a->section->name, ".opd") != 0 |
| 2811 | && strcmp (b->section->name, ".opd") == 0) | |
| 90e3cdf2 JJ |
2812 | return 1; |
| 2813 | ||
| 699733f6 | 2814 | /* then other code symbols. */ |
| 90e3cdf2 JJ |
2815 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
| 2816 | == (SEC_CODE | SEC_ALLOC) | |
| 2817 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2818 | != (SEC_CODE | SEC_ALLOC)) | |
| 2819 | return -1; | |
| 2820 | ||
| 2821 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2822 | != (SEC_CODE | SEC_ALLOC) | |
| 2823 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2824 | == (SEC_CODE | SEC_ALLOC)) | |
| 2825 | return 1; | |
| 2826 | ||
| 2827 | if (synthetic_relocatable) | |
| 2828 | { | |
| 2829 | if (a->section->id < b->section->id) | |
| 2830 | return -1; | |
| 2831 | ||
| 2832 | if (a->section->id > b->section->id) | |
| 2833 | return 1; | |
| 2834 | } | |
| 2835 | ||
| 2836 | if (a->value + a->section->vma < b->value + b->section->vma) | |
| 2837 | return -1; | |
| 2838 | ||
| 2839 | if (a->value + a->section->vma > b->value + b->section->vma) | |
| 2840 | return 1; | |
| 2841 | ||
| 4d35a0aa AM |
2842 | /* For syms with the same value, prefer strong dynamic global function |
| 2843 | syms over other syms. */ | |
| 2844 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
| 2845 | return -1; | |
| 2846 | ||
| 2847 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
| 2848 | return 1; | |
| 2849 | ||
| 2850 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
| 2851 | return -1; | |
| 2852 | ||
| 2853 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
| 2854 | return 1; | |
| 2855 | ||
| 2856 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
| 2857 | return -1; | |
| 2858 | ||
| 2859 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
| 2860 | return 1; | |
| 2861 | ||
| 2862 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
| 2863 | return -1; | |
| 2864 | ||
| 2865 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
| 2866 | return 1; | |
| 2867 | ||
| 90e3cdf2 JJ |
2868 | return 0; |
| 2869 | } | |
| 2870 | ||
| 699733f6 | 2871 | /* Search SYMS for a symbol of the given VALUE. */ |
| 90e3cdf2 | 2872 | |
| 699733f6 AM |
2873 | static asymbol * |
| 2874 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
| 90e3cdf2 | 2875 | { |
| 699733f6 | 2876 | long mid; |
| 90e3cdf2 | 2877 | |
| 699733f6 AM |
2878 | if (id == -1) |
| 2879 | { | |
| 2880 | while (lo < hi) | |
| 2881 | { | |
| 2882 | mid = (lo + hi) >> 1; | |
| 2883 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
| 2884 | lo = mid + 1; | |
| 2885 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
| 2886 | hi = mid; | |
| 2887 | else | |
| 2888 | return syms[mid]; | |
| 2889 | } | |
| 2890 | } | |
| 2891 | else | |
| 2892 | { | |
| 2893 | while (lo < hi) | |
| 2894 | { | |
| 2895 | mid = (lo + hi) >> 1; | |
| 2896 | if (syms[mid]->section->id < id) | |
| 2897 | lo = mid + 1; | |
| 2898 | else if (syms[mid]->section->id > id) | |
| 2899 | hi = mid; | |
| 2900 | else if (syms[mid]->value < value) | |
| 2901 | lo = mid + 1; | |
| 2902 | else if (syms[mid]->value > value) | |
| 2903 | hi = mid; | |
| 2904 | else | |
| 2905 | return syms[mid]; | |
| 2906 | } | |
| 2907 | } | |
| 2908 | return NULL; | |
| 90e3cdf2 JJ |
2909 | } |
| 2910 | ||
| 468392fb AM |
2911 | static bfd_boolean |
| 2912 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
| 2913 | { | |
| 2914 | bfd_vma vma = *(bfd_vma *) ptr; | |
| 2915 | return ((section->flags & SEC_ALLOC) != 0 | |
| 2916 | && section->vma <= vma | |
| 2917 | && vma < section->vma + section->size); | |
| 2918 | } | |
| 2919 | ||
| 699733f6 | 2920 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
| 468392fb | 2921 | entry syms. Also generate @plt symbols for the glink branch table. */ |
| 90e3cdf2 JJ |
2922 | |
| 2923 | static long | |
| a7535cf3 AM |
2924 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
| 2925 | long static_count, asymbol **static_syms, | |
| 2926 | long dyn_count, asymbol **dyn_syms, | |
| c9727e01 | 2927 | asymbol **ret) |
| 90e3cdf2 JJ |
2928 | { |
| 2929 | asymbol *s; | |
| 699733f6 AM |
2930 | long i; |
| 2931 | long count; | |
| 90e3cdf2 | 2932 | char *names; |
| a7535cf3 | 2933 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
| 699733f6 | 2934 | asection *opd; |
| 90e3cdf2 | 2935 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
| a7535cf3 | 2936 | asymbol **syms; |
| 90e3cdf2 JJ |
2937 | |
| 2938 | *ret = NULL; | |
| 2939 | ||
| 2940 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
| 2941 | if (opd == NULL) | |
| 2942 | return 0; | |
| 2943 | ||
| a7535cf3 | 2944 | symcount = static_count; |
| c9727e01 | 2945 | if (!relocatable) |
| a7535cf3 | 2946 | symcount += dyn_count; |
| 90e3cdf2 | 2947 | if (symcount == 0) |
| c9727e01 | 2948 | return 0; |
| 90e3cdf2 | 2949 | |
| a7535cf3 AM |
2950 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
| 2951 | if (syms == NULL) | |
| 7356fed5 | 2952 | return -1; |
| a7535cf3 AM |
2953 | |
| 2954 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
| 2955 | { | |
| 2956 | /* Use both symbol tables. */ | |
| 2957 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
| 2958 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
| 2959 | } | |
| 2960 | else if (!relocatable && static_count == 0) | |
| 2961 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
| 2962 | else | |
| 2963 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
| 2964 | ||
| 90e3cdf2 | 2965 | synthetic_relocatable = relocatable; |
| 595da8c5 | 2966 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
| 90e3cdf2 | 2967 | |
| c9727e01 AM |
2968 | if (!relocatable && symcount > 1) |
| 2969 | { | |
| 2970 | long j; | |
| 2971 | /* Trim duplicate syms, since we may have merged the normal and | |
| 2972 | dynamic symbols. Actually, we only care about syms that have | |
| 3b36f7e6 | 2973 | different values, so trim any with the same value. */ |
| c9727e01 AM |
2974 | for (i = 1, j = 1; i < symcount; ++i) |
| 2975 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
| 2976 | != syms[i]->value + syms[i]->section->vma) | |
| 2977 | syms[j++] = syms[i]; | |
| 2978 | symcount = j; | |
| 2979 | } | |
| 2980 | ||
| 699733f6 | 2981 | i = 0; |
| ffcfec52 | 2982 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
| 699733f6 AM |
2983 | ++i; |
| 2984 | codesecsym = i; | |
| 90e3cdf2 | 2985 | |
| 699733f6 AM |
2986 | for (; i < symcount; ++i) |
| 2987 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2988 | != (SEC_CODE | SEC_ALLOC)) | |
| 2989 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 2990 | break; | |
| 2991 | codesecsymend = i; | |
| 90e3cdf2 | 2992 | |
| 699733f6 AM |
2993 | for (; i < symcount; ++i) |
| 2994 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 2995 | break; | |
| 2996 | secsymend = i; | |
| 90e3cdf2 | 2997 | |
| 699733f6 | 2998 | for (; i < symcount; ++i) |
| ffcfec52 | 2999 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
| 699733f6 AM |
3000 | break; |
| 3001 | opdsymend = i; | |
| 90e3cdf2 | 3002 | |
| 699733f6 AM |
3003 | for (; i < symcount; ++i) |
| 3004 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3005 | != (SEC_CODE | SEC_ALLOC)) | |
| 3006 | break; | |
| 3007 | symcount = i; | |
| 3008 | ||
| c9727e01 | 3009 | count = 0; |
| 90e3cdf2 | 3010 | |
| 699733f6 | 3011 | if (relocatable) |
| 90e3cdf2 | 3012 | { |
| 699733f6 AM |
3013 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| 3014 | arelent *r; | |
| 3015 | size_t size; | |
| 3016 | long relcount; | |
| 90e3cdf2 | 3017 | |
| 468392fb AM |
3018 | if (opdsymend == secsymend) |
| 3019 | goto done; | |
| 3020 | ||
| 699733f6 | 3021 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
| 90e3cdf2 | 3022 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
| 7356fed5 | 3023 | if (relcount == 0) |
| c9727e01 | 3024 | goto done; |
| 90e3cdf2 | 3025 | |
| 7356fed5 AM |
3026 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
| 3027 | { | |
| 3028 | count = -1; | |
| 3029 | goto done; | |
| 3030 | } | |
| 3031 | ||
| 699733f6 | 3032 | size = 0; |
| 595da8c5 | 3033 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 699733f6 AM |
3034 | { |
| 3035 | asymbol *sym; | |
| 90e3cdf2 | 3036 | |
| 595da8c5 | 3037 | while (r < opd->relocation + relcount |
| 699733f6 AM |
3038 | && r->address < syms[i]->value + opd->vma) |
| 3039 | ++r; | |
| 90e3cdf2 | 3040 | |
| 595da8c5 | 3041 | if (r == opd->relocation + relcount) |
| 699733f6 | 3042 | break; |
| 90e3cdf2 | 3043 | |
| 699733f6 AM |
3044 | if (r->address != syms[i]->value + opd->vma) |
| 3045 | continue; | |
| 90e3cdf2 | 3046 | |
| 699733f6 AM |
3047 | if (r->howto->type != R_PPC64_ADDR64) |
| 3048 | continue; | |
| 90e3cdf2 | 3049 | |
| 699733f6 AM |
3050 | sym = *r->sym_ptr_ptr; |
| 3051 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 3052 | sym->section->id, sym->value + r->addend)) | |
| 3053 | { | |
| 3054 | ++count; | |
| 3055 | size += sizeof (asymbol); | |
| 3056 | size += strlen (syms[i]->name) + 2; | |
| 3057 | } | |
| 3058 | } | |
| 90e3cdf2 | 3059 | |
| 699733f6 AM |
3060 | s = *ret = bfd_malloc (size); |
| 3061 | if (s == NULL) | |
| 3062 | { | |
| 7356fed5 | 3063 | count = -1; |
| c9727e01 | 3064 | goto done; |
| 699733f6 | 3065 | } |
| 90e3cdf2 | 3066 | |
| 699733f6 | 3067 | names = (char *) (s + count); |
| 90e3cdf2 | 3068 | |
| 595da8c5 | 3069 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 90e3cdf2 | 3070 | { |
| 699733f6 | 3071 | asymbol *sym; |
| 90e3cdf2 | 3072 | |
| 595da8c5 | 3073 | while (r < opd->relocation + relcount |
| 699733f6 AM |
3074 | && r->address < syms[i]->value + opd->vma) |
| 3075 | ++r; | |
| 90e3cdf2 | 3076 | |
| 595da8c5 | 3077 | if (r == opd->relocation + relcount) |
| 699733f6 AM |
3078 | break; |
| 3079 | ||
| 3080 | if (r->address != syms[i]->value + opd->vma) | |
| 3081 | continue; | |
| 3082 | ||
| 3083 | if (r->howto->type != R_PPC64_ADDR64) | |
| 3084 | continue; | |
| 90e3cdf2 | 3085 | |
| 699733f6 AM |
3086 | sym = *r->sym_ptr_ptr; |
| 3087 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 3088 | sym->section->id, sym->value + r->addend)) | |
| 3089 | { | |
| 3090 | size_t len; | |
| 3091 | ||
| 3092 | *s = *syms[i]; | |
| 6ba2a415 | 3093 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3094 | s->section = sym->section; |
| 3095 | s->value = sym->value + r->addend; | |
| 3096 | s->name = names; | |
| 3097 | *names++ = '.'; | |
| 3098 | len = strlen (syms[i]->name); | |
| 3099 | memcpy (names, syms[i]->name, len + 1); | |
| 3100 | names += len + 1; | |
| 6f610d07 UW |
3101 | /* Have udata.p point back to the original symbol this |
| 3102 | synthetic symbol was derived from. */ | |
| 3103 | s->udata.p = syms[i]; | |
| 699733f6 AM |
3104 | s++; |
| 3105 | } | |
| 3106 | } | |
| 3107 | } | |
| 3108 | else | |
| 90e3cdf2 | 3109 | { |
| 468392fb | 3110 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| 699733f6 AM |
3111 | bfd_byte *contents; |
| 3112 | size_t size; | |
| 468392fb AM |
3113 | long plt_count = 0; |
| 3114 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
| 3115 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
| 3116 | arelent *p; | |
| 90e3cdf2 | 3117 | |
| 699733f6 AM |
3118 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
| 3119 | { | |
| 3120 | if (contents) | |
| c9727e01 AM |
3121 | { |
| 3122 | free_contents_and_exit: | |
| 3123 | free (contents); | |
| 3124 | } | |
| 7356fed5 | 3125 | count = -1; |
| c9727e01 | 3126 | goto done; |
| 699733f6 | 3127 | } |
| 90e3cdf2 | 3128 | |
| 699733f6 AM |
3129 | size = 0; |
| 3130 | for (i = secsymend; i < opdsymend; ++i) | |
| 3131 | { | |
| 3132 | bfd_vma ent; | |
| 90e3cdf2 | 3133 | |
| 5ef11c02 AM |
3134 | /* Ignore bogus symbols. */ |
| 3135 | if (syms[i]->value > opd->size - 8) | |
| 3136 | continue; | |
| 3137 | ||
| 699733f6 AM |
3138 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3139 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 3140 | { | |
| 3141 | ++count; | |
| 3142 | size += sizeof (asymbol); | |
| 3143 | size += strlen (syms[i]->name) + 2; | |
| 3144 | } | |
| 3145 | } | |
| 90e3cdf2 | 3146 | |
| 468392fb | 3147 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
| 066ee829 AM |
3148 | if (dyn_count != 0 |
| 3149 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
| 468392fb AM |
3150 | { |
| 3151 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
| 3152 | size_t extdynsize; | |
| 3153 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
| 3154 | ||
| 3155 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
| 3156 | goto free_contents_and_exit; | |
| 3157 | ||
| 3158 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
| 3159 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
| 3160 | ||
| 3161 | extdyn = dynbuf; | |
| 3162 | extdynend = extdyn + dynamic->size; | |
| 3163 | for (; extdyn < extdynend; extdyn += extdynsize) | |
| 3164 | { | |
| 3165 | Elf_Internal_Dyn dyn; | |
| 3166 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
| 3167 | ||
| 3168 | if (dyn.d_tag == DT_NULL) | |
| 3169 | break; | |
| 3170 | ||
| 3171 | if (dyn.d_tag == DT_PPC64_GLINK) | |
| 3172 | { | |
| 3173 | /* The first glink stub starts at offset 32; see comment in | |
| 3174 | ppc64_elf_finish_dynamic_sections. */ | |
| 3175 | glink_vma = dyn.d_un.d_val + 32; | |
| 3176 | /* The .glink section usually does not survive the final | |
| 3177 | link; search for the section (usually .text) where the | |
| 3178 | glink stubs now reside. */ | |
| 3179 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
| 3180 | &glink_vma); | |
| 3181 | break; | |
| 3182 | } | |
| 3183 | } | |
| 3184 | ||
| 3185 | free (dynbuf); | |
| 3186 | } | |
| 3187 | ||
| 3188 | if (glink != NULL) | |
| 3189 | { | |
| 3190 | /* Determine __glink trampoline by reading the relative branch | |
| 3191 | from the first glink stub. */ | |
| 3192 | bfd_byte buf[4]; | |
| 3193 | if (bfd_get_section_contents (abfd, glink, buf, | |
| 3194 | glink_vma + 4 - glink->vma, 4)) | |
| 3195 | { | |
| 3196 | unsigned int insn = bfd_get_32 (abfd, buf); | |
| 3197 | insn ^= B_DOT; | |
| 3198 | if ((insn & ~0x3fffffc) == 0) | |
| 3199 | resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000; | |
| 3200 | } | |
| 3201 | ||
| 3202 | if (resolv_vma) | |
| 3203 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
| 468392fb | 3204 | |
| 066ee829 AM |
3205 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
| 3206 | if (relplt != NULL) | |
| 3207 | { | |
| 3208 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
| 3209 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
| 3210 | goto free_contents_and_exit; | |
| 468392fb | 3211 | |
| 066ee829 AM |
3212 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
| 3213 | size += plt_count * sizeof (asymbol); | |
| 468392fb | 3214 | |
| 066ee829 AM |
3215 | p = relplt->relocation; |
| 3216 | for (i = 0; i < plt_count; i++, p++) | |
| e054468f AM |
3217 | { |
| 3218 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
| 3219 | if (p->addend != 0) | |
| 3220 | size += sizeof ("+0x") - 1 + 16; | |
| 3221 | } | |
| 066ee829 | 3222 | } |
| 468392fb AM |
3223 | } |
| 3224 | ||
| 699733f6 AM |
3225 | s = *ret = bfd_malloc (size); |
| 3226 | if (s == NULL) | |
| 7356fed5 | 3227 | goto free_contents_and_exit; |
| 90e3cdf2 | 3228 | |
| 468392fb | 3229 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
| 90e3cdf2 | 3230 | |
| 699733f6 | 3231 | for (i = secsymend; i < opdsymend; ++i) |
| 90e3cdf2 | 3232 | { |
| 699733f6 | 3233 | bfd_vma ent; |
| 90e3cdf2 | 3234 | |
| 5ef11c02 AM |
3235 | if (syms[i]->value > opd->size - 8) |
| 3236 | continue; | |
| 3237 | ||
| 699733f6 AM |
3238 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3239 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 90e3cdf2 | 3240 | { |
| c9727e01 | 3241 | long lo, hi; |
| 699733f6 | 3242 | size_t len; |
| c9727e01 | 3243 | asection *sec = abfd->sections; |
| 90e3cdf2 | 3244 | |
| 699733f6 AM |
3245 | *s = *syms[i]; |
| 3246 | lo = codesecsym; | |
| 3247 | hi = codesecsymend; | |
| 3248 | while (lo < hi) | |
| 3249 | { | |
| c9727e01 | 3250 | long mid = (lo + hi) >> 1; |
| 699733f6 AM |
3251 | if (syms[mid]->section->vma < ent) |
| 3252 | lo = mid + 1; | |
| 3253 | else if (syms[mid]->section->vma > ent) | |
| 3254 | hi = mid; | |
| 3255 | else | |
| c9727e01 AM |
3256 | { |
| 3257 | sec = syms[mid]->section; | |
| 3258 | break; | |
| 3259 | } | |
| 699733f6 AM |
3260 | } |
| 3261 | ||
| c9727e01 | 3262 | if (lo >= hi && lo > codesecsym) |
| 699733f6 | 3263 | sec = syms[lo - 1]->section; |
| 699733f6 AM |
3264 | |
| 3265 | for (; sec != NULL; sec = sec->next) | |
| 3266 | { | |
| 3267 | if (sec->vma > ent) | |
| 3268 | break; | |
| 3269 | if ((sec->flags & SEC_ALLOC) == 0 | |
| 3270 | || (sec->flags & SEC_LOAD) == 0) | |
| 3271 | break; | |
| 3272 | if ((sec->flags & SEC_CODE) != 0) | |
| 3273 | s->section = sec; | |
| 3274 | } | |
| 6ba2a415 | 3275 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3276 | s->value = ent - s->section->vma; |
| 3277 | s->name = names; | |
| 3278 | *names++ = '.'; | |
| 3279 | len = strlen (syms[i]->name); | |
| 3280 | memcpy (names, syms[i]->name, len + 1); | |
| 3281 | names += len + 1; | |
| 6f610d07 UW |
3282 | /* Have udata.p point back to the original symbol this |
| 3283 | synthetic symbol was derived from. */ | |
| 3284 | s->udata.p = syms[i]; | |
| 699733f6 | 3285 | s++; |
| 90e3cdf2 | 3286 | } |
| 90e3cdf2 | 3287 | } |
| 699733f6 | 3288 | free (contents); |
| 468392fb AM |
3289 | |
| 3290 | if (glink != NULL && relplt != NULL) | |
| 3291 | { | |
| 3292 | if (resolv_vma) | |
| 3293 | { | |
| 3294 | /* Add a symbol for the main glink trampoline. */ | |
| 86a4952b | 3295 | memset (s, 0, sizeof *s); |
| 468392fb | 3296 | s->the_bfd = abfd; |
| 6ba2a415 | 3297 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
| 468392fb AM |
3298 | s->section = glink; |
| 3299 | s->value = resolv_vma - glink->vma; | |
| 3300 | s->name = names; | |
| 3301 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
| 3302 | names += sizeof ("__glink_PLTresolve"); | |
| 3303 | s++; | |
| 3304 | count++; | |
| 3305 | } | |
| 3306 | ||
| 3307 | /* FIXME: It would be very much nicer to put sym@plt on the | |
| 3308 | stub rather than on the glink branch table entry. The | |
| 3309 | objdump disassembler would then use a sensible symbol | |
| 3310 | name on plt calls. The difficulty in doing so is | |
| 3311 | a) finding the stubs, and, | |
| 3312 | b) matching stubs against plt entries, and, | |
| 3313 | c) there can be multiple stubs for a given plt entry. | |
| 3314 | ||
| 3315 | Solving (a) could be done by code scanning, but older | |
| 3316 | ppc64 binaries used different stubs to current code. | |
| 3317 | (b) is the tricky one since you need to known the toc | |
| 3318 | pointer for at least one function that uses a pic stub to | |
| 3319 | be able to calculate the plt address referenced. | |
| 3320 | (c) means gdb would need to set multiple breakpoints (or | |
| 3321 | find the glink branch itself) when setting breakpoints | |
| 3322 | for pending shared library loads. */ | |
| 3323 | p = relplt->relocation; | |
| 3324 | for (i = 0; i < plt_count; i++, p++) | |
| 3325 | { | |
| 3326 | size_t len; | |
| 3327 | ||
| 3328 | *s = **p->sym_ptr_ptr; | |
| 3329 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
| 3330 | we are defining a symbol, ensure one of them is set. */ | |
| 3331 | if ((s->flags & BSF_LOCAL) == 0) | |
| 3332 | s->flags |= BSF_GLOBAL; | |
| 6ba2a415 | 3333 | s->flags |= BSF_SYNTHETIC; |
| 468392fb AM |
3334 | s->section = glink; |
| 3335 | s->value = glink_vma - glink->vma; | |
| 3336 | s->name = names; | |
| 3337 | s->udata.p = NULL; | |
| 3338 | len = strlen ((*p->sym_ptr_ptr)->name); | |
| 3339 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
| 3340 | names += len; | |
| e054468f AM |
3341 | if (p->addend != 0) |
| 3342 | { | |
| 3343 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
| 3344 | names += sizeof ("+0x") - 1; | |
| 3345 | bfd_sprintf_vma (abfd, names, p->addend); | |
| 3346 | names += strlen (names); | |
| 3347 | } | |
| 468392fb AM |
3348 | memcpy (names, "@plt", sizeof ("@plt")); |
| 3349 | names += sizeof ("@plt"); | |
| 3350 | s++; | |
| 3351 | glink_vma += 8; | |
| 3352 | if (i >= 0x8000) | |
| 3353 | glink_vma += 4; | |
| 3354 | } | |
| 3355 | count += plt_count; | |
| 3356 | } | |
| 90e3cdf2 JJ |
3357 | } |
| 3358 | ||
| c9727e01 | 3359 | done: |
| a7535cf3 | 3360 | free (syms); |
| 90e3cdf2 JJ |
3361 | return count; |
| 3362 | } | |
| 5bd4f169 | 3363 | \f |
| 65f38f15 AM |
3364 | /* The following functions are specific to the ELF linker, while |
| 3365 | functions above are used generally. Those named ppc64_elf_* are | |
| 3366 | called by the main ELF linker code. They appear in this file more | |
| 3367 | or less in the order in which they are called. eg. | |
| 3368 | ppc64_elf_check_relocs is called early in the link process, | |
| 3369 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
| e86ce104 AM |
3370 | called. |
| 3371 | ||
| 3372 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
| 3373 | functions have both a function code symbol and a function descriptor | |
| 3374 | symbol. A call to foo in a relocatable object file looks like: | |
| 3375 | ||
| 3376 | . .text | |
| 3377 | . x: | |
| 3378 | . bl .foo | |
| 3379 | . nop | |
| 3380 | ||
| 3381 | The function definition in another object file might be: | |
| 3382 | ||
| 3383 | . .section .opd | |
| 3384 | . foo: .quad .foo | |
| 3385 | . .quad .TOC.@tocbase | |
| 3386 | . .quad 0 | |
| 3387 | . | |
| 3388 | . .text | |
| 3389 | . .foo: blr | |
| 3390 | ||
| 3391 | When the linker resolves the call during a static link, the branch | |
| 3392 | unsurprisingly just goes to .foo and the .opd information is unused. | |
| 3393 | If the function definition is in a shared library, things are a little | |
| 3394 | different: The call goes via a plt call stub, the opd information gets | |
| 3395 | copied to the plt, and the linker patches the nop. | |
| 3396 | ||
| 3397 | . x: | |
| 3398 | . bl .foo_stub | |
| 3399 | . ld 2,40(1) | |
| 3400 | . | |
| 3401 | . | |
| 3402 | . .foo_stub: | |
| 3403 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
| 411e1bfb | 3404 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
| e86ce104 AM |
3405 | . std 2,40(1) # this is the general idea |
| 3406 | . ld 11,0(12) | |
| 3407 | . ld 2,8(12) | |
| 3408 | . mtctr 11 | |
| 3409 | . ld 11,16(12) | |
| 3410 | . bctr | |
| 3411 | . | |
| 3412 | . .section .plt | |
| 3413 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
| 3414 | ||
| 3415 | The "reloc ()" notation is supposed to indicate that the linker emits | |
| 3416 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
| 3417 | copying. | |
| 3418 | ||
| 3419 | What are the difficulties here? Well, firstly, the relocations | |
| 3420 | examined by the linker in check_relocs are against the function code | |
| 3421 | sym .foo, while the dynamic relocation in the plt is emitted against | |
| 3422 | the function descriptor symbol, foo. Somewhere along the line, we need | |
| 3423 | to carefully copy dynamic link information from one symbol to the other. | |
| 3424 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
| 3425 | symbol as is normal for most other backends. We need foo dynamic | |
| 3426 | instead, at least for an application final link. However, when | |
| 3427 | creating a shared library containing foo, we need to have both symbols | |
| 3428 | dynamic so that references to .foo are satisfied during the early | |
| 3429 | stages of linking. Otherwise the linker might decide to pull in a | |
| 8387904d AM |
3430 | definition from some other object, eg. a static library. |
| 3431 | ||
| 3432 | Update: As of August 2004, we support a new convention. Function | |
| 3433 | calls may use the function descriptor symbol, ie. "bl foo". This | |
| 3434 | behaves exactly as "bl .foo". */ | |
| 65f38f15 AM |
3435 | |
| 3436 | /* The linker needs to keep track of the number of relocs that it | |
| 3437 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
| 3438 | This is so that it can later discard them if they are found to be | |
| 3439 | unnecessary. We store the information in a field extending the | |
| 3440 | regular ELF linker hash table. */ | |
| 3441 | ||
| 3442 | struct ppc_dyn_relocs | |
| 3443 | { | |
| 3444 | struct ppc_dyn_relocs *next; | |
| 3445 | ||
| 3446 | /* The input section of the reloc. */ | |
| 3447 | asection *sec; | |
| 3448 | ||
| 3449 | /* Total number of relocs copied for the input section. */ | |
| 3450 | bfd_size_type count; | |
| 3451 | ||
| 3452 | /* Number of pc-relative relocs copied for the input section. */ | |
| 3453 | bfd_size_type pc_count; | |
| 3454 | }; | |
| 3455 | ||
| 411e1bfb AM |
3456 | /* Track GOT entries needed for a given symbol. We might need more |
| 3457 | than one got entry per symbol. */ | |
| 3458 | struct got_entry | |
| 3459 | { | |
| 3460 | struct got_entry *next; | |
| 3461 | ||
| e7b938ca | 3462 | /* The symbol addend that we'll be placing in the GOT. */ |
| 411e1bfb AM |
3463 | bfd_vma addend; |
| 3464 | ||
| e717da7e AM |
3465 | /* Unlike other ELF targets, we use separate GOT entries for the same |
| 3466 | symbol referenced from different input files. This is to support | |
| 3467 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
| 102890f0 AM |
3468 | from one input file to another. FIXME: After group_sections we |
| 3469 | ought to merge entries within the group. | |
| e717da7e AM |
3470 | |
| 3471 | Point to the BFD owning this GOT entry. */ | |
| 3472 | bfd *owner; | |
| 3473 | ||
| 3474 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
| 3475 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
| 3476 | char tls_type; | |
| 3477 | ||
| e7b938ca | 3478 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
| 411e1bfb AM |
3479 | union |
| 3480 | { | |
| 3481 | bfd_signed_vma refcount; | |
| 3482 | bfd_vma offset; | |
| 3483 | } got; | |
| 411e1bfb AM |
3484 | }; |
| 3485 | ||
| 3486 | /* The same for PLT. */ | |
| 3487 | struct plt_entry | |
| 3488 | { | |
| 3489 | struct plt_entry *next; | |
| 3490 | ||
| 3491 | bfd_vma addend; | |
| 3492 | ||
| 3493 | union | |
| 3494 | { | |
| 3495 | bfd_signed_vma refcount; | |
| 3496 | bfd_vma offset; | |
| 3497 | } plt; | |
| 3498 | }; | |
| 3499 | ||
| 1d483afe | 3500 | /* Of those relocs that might be copied as dynamic relocs, this function |
| 58ac9f71 AM |
3501 | selects those that must be copied when linking a shared library, |
| 3502 | even when the symbol is local. */ | |
| 65f38f15 | 3503 | |
| 1d483afe AM |
3504 | static int |
| 3505 | must_be_dyn_reloc (struct bfd_link_info *info, | |
| 3506 | enum elf_ppc64_reloc_type r_type) | |
| 3507 | { | |
| 3508 | switch (r_type) | |
| 3509 | { | |
| 3510 | default: | |
| 3511 | return 1; | |
| 3512 | ||
| 3513 | case R_PPC64_REL32: | |
| 3514 | case R_PPC64_REL64: | |
| 3515 | case R_PPC64_REL30: | |
| 3516 | return 0; | |
| 3517 | ||
| 3518 | case R_PPC64_TPREL16: | |
| 3519 | case R_PPC64_TPREL16_LO: | |
| 3520 | case R_PPC64_TPREL16_HI: | |
| 3521 | case R_PPC64_TPREL16_HA: | |
| 3522 | case R_PPC64_TPREL16_DS: | |
| 3523 | case R_PPC64_TPREL16_LO_DS: | |
| 3524 | case R_PPC64_TPREL16_HIGHER: | |
| 3525 | case R_PPC64_TPREL16_HIGHERA: | |
| 3526 | case R_PPC64_TPREL16_HIGHEST: | |
| 3527 | case R_PPC64_TPREL16_HIGHESTA: | |
| 3528 | case R_PPC64_TPREL64: | |
| 3529 | return !info->executable; | |
| 3530 | } | |
| 3531 | } | |
| 65f38f15 | 3532 | |
| f4656909 AM |
3533 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
| 3534 | copying dynamic variables from a shared lib into an app's dynbss | |
| 3535 | section, and instead use a dynamic relocation to point into the | |
| 5d35169e AM |
3536 | shared lib. With code that gcc generates, it's vital that this be |
| 3537 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
| 3538 | the address of a function descriptor, which resides in the .opd | |
| 3539 | section. gcc uses the descriptor directly rather than going via the | |
| 3540 | GOT as some other ABI's do, which means that initialized function | |
| 3541 | pointers must reference the descriptor. Thus, a function pointer | |
| 3542 | initialized to the address of a function in a shared library will | |
| 3543 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
| 4cc11e76 | 3544 | redefines the function descriptor symbol to point to the copy. This |
| 5d35169e AM |
3545 | presents a problem as a plt entry for that function is also |
| 3546 | initialized from the function descriptor symbol and the copy reloc | |
| 3547 | may not be initialized first. */ | |
| a23b6845 | 3548 | #define ELIMINATE_COPY_RELOCS 1 |
| f4656909 | 3549 | |
| 721956f4 AM |
3550 | /* Section name for stubs is the associated section name plus this |
| 3551 | string. */ | |
| 3552 | #define STUB_SUFFIX ".stub" | |
| 3553 | ||
| 3554 | /* Linker stubs. | |
| 3555 | ppc_stub_long_branch: | |
| 3556 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
| 3557 | destination, but a 24 bit branch in a stub section will reach. | |
| 3558 | . b dest | |
| 3559 | ||
| 3560 | ppc_stub_plt_branch: | |
| 3561 | Similar to the above, but a 24 bit branch in the stub section won't | |
| 3562 | reach its destination. | |
| 87e226ce AM |
3563 | . addis %r12,%r2,xxx@toc@ha |
| 3564 | . ld %r11,xxx@toc@l(%r12) | |
| 721956f4 AM |
3565 | . mtctr %r11 |
| 3566 | . bctr | |
| 3567 | ||
| 3568 | ppc_stub_plt_call: | |
| 2c66dc6c AM |
3569 | Used to call a function in a shared library. If it so happens that |
| 3570 | the plt entry referenced crosses a 64k boundary, then an extra | |
| ac2df442 | 3571 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
| 87e226ce | 3572 | . addis %r12,%r2,xxx@toc@ha |
| 721956f4 | 3573 | . std %r2,40(%r1) |
| 87e226ce | 3574 | . ld %r11,xxx+0@toc@l(%r12) |
| 721956f4 | 3575 | . mtctr %r11 |
| ac2df442 | 3576 | . ld %r2,xxx+8@toc@l(%r12) |
| 87e226ce | 3577 | . ld %r11,xxx+16@toc@l(%r12) |
| 721956f4 | 3578 | . bctr |
| ad8e1ba5 AM |
3579 | |
| 3580 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
| 3581 | code to adjust the value and save r2 to support multiple toc sections. | |
| 3582 | A ppc_stub_long_branch with an r2 offset looks like: | |
| 3583 | . std %r2,40(%r1) | |
| 3584 | . addis %r2,%r2,off@ha | |
| 3585 | . addi %r2,%r2,off@l | |
| 3586 | . b dest | |
| 3587 | ||
| 3588 | A ppc_stub_plt_branch with an r2 offset looks like: | |
| 3589 | . std %r2,40(%r1) | |
| 3590 | . addis %r12,%r2,xxx@toc@ha | |
| 3591 | . ld %r11,xxx@toc@l(%r12) | |
| 3592 | . addis %r2,%r2,off@ha | |
| 3593 | . addi %r2,%r2,off@l | |
| 3594 | . mtctr %r11 | |
| 3595 | . bctr | |
| ac2df442 AM |
3596 | |
| 3597 | In cases where the "addis" instruction would add zero, the "addis" is | |
| 3598 | omitted and following instructions modified slightly in some cases. | |
| 721956f4 AM |
3599 | */ |
| 3600 | ||
| 3601 | enum ppc_stub_type { | |
| 3602 | ppc_stub_none, | |
| 3603 | ppc_stub_long_branch, | |
| ad8e1ba5 | 3604 | ppc_stub_long_branch_r2off, |
| 721956f4 | 3605 | ppc_stub_plt_branch, |
| ad8e1ba5 | 3606 | ppc_stub_plt_branch_r2off, |
| 721956f4 AM |
3607 | ppc_stub_plt_call |
| 3608 | }; | |
| 3609 | ||
| 3610 | struct ppc_stub_hash_entry { | |
| 3611 | ||
| 3612 | /* Base hash table entry structure. */ | |
| 3613 | struct bfd_hash_entry root; | |
| 3614 | ||
| ad8e1ba5 AM |
3615 | enum ppc_stub_type stub_type; |
| 3616 | ||
| 721956f4 AM |
3617 | /* The stub section. */ |
| 3618 | asection *stub_sec; | |
| 3619 | ||
| 3620 | /* Offset within stub_sec of the beginning of this stub. */ | |
| 3621 | bfd_vma stub_offset; | |
| 3622 | ||
| 3623 | /* Given the symbol's value and its section we can determine its final | |
| 3624 | value when building the stubs (so the stub knows where to jump. */ | |
| 3625 | bfd_vma target_value; | |
| 3626 | asection *target_section; | |
| 3627 | ||
| 721956f4 AM |
3628 | /* The symbol table entry, if any, that this was derived from. */ |
| 3629 | struct ppc_link_hash_entry *h; | |
| e054468f | 3630 | struct plt_entry *plt_ent; |
| 721956f4 | 3631 | |
| 411e1bfb AM |
3632 | /* And the reloc addend that this was derived from. */ |
| 3633 | bfd_vma addend; | |
| 3634 | ||
| 721956f4 AM |
3635 | /* Where this stub is being called from, or, in the case of combined |
| 3636 | stub sections, the first input section in the group. */ | |
| 3637 | asection *id_sec; | |
| 3638 | }; | |
| 3639 | ||
| 3640 | struct ppc_branch_hash_entry { | |
| 3641 | ||
| 3642 | /* Base hash table entry structure. */ | |
| 3643 | struct bfd_hash_entry root; | |
| 3644 | ||
| c456f082 | 3645 | /* Offset within branch lookup table. */ |
| 721956f4 AM |
3646 | unsigned int offset; |
| 3647 | ||
| 3648 | /* Generation marker. */ | |
| 3649 | unsigned int iter; | |
| 3650 | }; | |
| 65f38f15 AM |
3651 | |
| 3652 | struct ppc_link_hash_entry | |
| 3653 | { | |
| 3654 | struct elf_link_hash_entry elf; | |
| 3655 | ||
| b3fac117 AM |
3656 | union { |
| 3657 | /* A pointer to the most recently used stub hash entry against this | |
| 3658 | symbol. */ | |
| 3659 | struct ppc_stub_hash_entry *stub_cache; | |
| 3660 | ||
| 3661 | /* A pointer to the next symbol starting with a '.' */ | |
| 3662 | struct ppc_link_hash_entry *next_dot_sym; | |
| 3663 | } u; | |
| 721956f4 | 3664 | |
| 65f38f15 AM |
3665 | /* Track dynamic relocs copied for this symbol. */ |
| 3666 | struct ppc_dyn_relocs *dyn_relocs; | |
| e86ce104 | 3667 | |
| 721956f4 | 3668 | /* Link between function code and descriptor symbols. */ |
| 34814b9f | 3669 | struct ppc_link_hash_entry *oh; |
| 721956f4 | 3670 | |
| e86ce104 AM |
3671 | /* Flag function code and descriptor symbols. */ |
| 3672 | unsigned int is_func:1; | |
| 3673 | unsigned int is_func_descriptor:1; | |
| 908b32fc | 3674 | unsigned int fake:1; |
| 411e1bfb | 3675 | |
| c5614fa4 AM |
3676 | /* Whether global opd/toc sym has been adjusted or not. |
| 3677 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
| 3678 | should be set for all globals defined in any opd/toc section. */ | |
| 754021d0 AM |
3679 | unsigned int adjust_done:1; |
| 3680 | ||
| 99877b66 AM |
3681 | /* Set if we twiddled this symbol to weak at some stage. */ |
| 3682 | unsigned int was_undefined:1; | |
| 3683 | ||
| 411e1bfb | 3684 | /* Contexts in which symbol is used in the GOT (or TOC). |
| e7b938ca AM |
3685 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
| 3686 | corresponding relocs are encountered during check_relocs. | |
| 3687 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
| 3688 | indicate the corresponding GOT entry type is not needed. | |
| 3689 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
| 3690 | a TPREL one. We use a separate flag rather than setting TPREL | |
| 3691 | just for convenience in distinguishing the two cases. */ | |
| 3692 | #define TLS_GD 1 /* GD reloc. */ | |
| 3693 | #define TLS_LD 2 /* LD reloc. */ | |
| 3694 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
| 3695 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
| 3696 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
| 3697 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
| 3698 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
| e054468f | 3699 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
| e7b938ca | 3700 | char tls_mask; |
| 65f38f15 AM |
3701 | }; |
| 3702 | ||
| 3703 | /* ppc64 ELF linker hash table. */ | |
| 3704 | ||
| 3705 | struct ppc_link_hash_table | |
| 3706 | { | |
| 3707 | struct elf_link_hash_table elf; | |
| 3708 | ||
| 721956f4 AM |
3709 | /* The stub hash table. */ |
| 3710 | struct bfd_hash_table stub_hash_table; | |
| 3711 | ||
| 3712 | /* Another hash table for plt_branch stubs. */ | |
| 3713 | struct bfd_hash_table branch_hash_table; | |
| 3714 | ||
| 3715 | /* Linker stub bfd. */ | |
| 3716 | bfd *stub_bfd; | |
| 3717 | ||
| 3718 | /* Linker call-backs. */ | |
| 4ce794b7 AM |
3719 | asection * (*add_stub_section) (const char *, asection *); |
| 3720 | void (*layout_sections_again) (void); | |
| 721956f4 AM |
3721 | |
| 3722 | /* Array to keep track of which stub sections have been created, and | |
| 3723 | information on stub grouping. */ | |
| 3724 | struct map_stub { | |
| 3725 | /* This is the section to which stubs in the group will be attached. */ | |
| 3726 | asection *link_sec; | |
| 3727 | /* The stub section. */ | |
| 3728 | asection *stub_sec; | |
| ad8e1ba5 AM |
3729 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
| 3730 | bfd_vma toc_off; | |
| 721956f4 AM |
3731 | } *stub_group; |
| 3732 | ||
| ad8e1ba5 AM |
3733 | /* Temp used when calculating TOC pointers. */ |
| 3734 | bfd_vma toc_curr; | |
| bf102f86 AM |
3735 | bfd *toc_bfd; |
| 3736 | asection *toc_first_sec; | |
| ad8e1ba5 | 3737 | |
| 8f3bab57 AM |
3738 | /* Highest input section id. */ |
| 3739 | int top_id; | |
| 3740 | ||
| 734b6cf9 AM |
3741 | /* Highest output section index. */ |
| 3742 | int top_index; | |
| 3743 | ||
| b3fac117 AM |
3744 | /* Used when adding symbols. */ |
| 3745 | struct ppc_link_hash_entry *dot_syms; | |
| 3746 | ||
| 734b6cf9 AM |
3747 | /* List of input sections for each output section. */ |
| 3748 | asection **input_list; | |
| 721956f4 | 3749 | |
| 65f38f15 | 3750 | /* Short-cuts to get to dynamic linker sections. */ |
| 4ce794b7 | 3751 | asection *got; |
| 4ce794b7 AM |
3752 | asection *plt; |
| 3753 | asection *relplt; | |
| e054468f AM |
3754 | asection *iplt; |
| 3755 | asection *reliplt; | |
| 4ce794b7 AM |
3756 | asection *dynbss; |
| 3757 | asection *relbss; | |
| 3758 | asection *glink; | |
| 82bd7b59 | 3759 | asection *sfpr; |
| 4ce794b7 AM |
3760 | asection *brlt; |
| 3761 | asection *relbrlt; | |
| ec338859 | 3762 | |
| 8387904d AM |
3763 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
| 3764 | struct ppc_link_hash_entry *tls_get_addr; | |
| 3765 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
| 411e1bfb | 3766 | |
| 9b5ecbd0 AM |
3767 | /* Statistics. */ |
| 3768 | unsigned long stub_count[ppc_stub_plt_call]; | |
| 3769 | ||
| ee75fd95 AM |
3770 | /* Number of stubs against global syms. */ |
| 3771 | unsigned long stub_globals; | |
| 3772 | ||
| ad8e1ba5 | 3773 | /* Set if we should emit symbols for stubs. */ |
| 99877b66 | 3774 | unsigned int emit_stub_syms:1; |
| ad8e1ba5 | 3775 | |
| a7f2871e AM |
3776 | /* Set if __tls_get_addr optimization should not be done. */ |
| 3777 | unsigned int no_tls_get_addr_opt:1; | |
| 3778 | ||
| 4c52953f AM |
3779 | /* Support for multiple toc sections. */ |
| 3780 | unsigned int no_multi_toc:1; | |
| 3781 | unsigned int multi_toc_needed:1; | |
| 3782 | ||
| 5d1634d7 | 3783 | /* Set on error. */ |
| 99877b66 | 3784 | unsigned int stub_error:1; |
| 721956f4 | 3785 | |
| 7d9616d7 | 3786 | /* Temp used by ppc64_elf_process_dot_syms. */ |
| 99877b66 | 3787 | unsigned int twiddled_syms:1; |
| 721956f4 AM |
3788 | |
| 3789 | /* Incremented every time we size stubs. */ | |
| 3790 | unsigned int stub_iteration; | |
| 5d1634d7 | 3791 | |
| 87d72d41 AM |
3792 | /* Small local sym cache. */ |
| 3793 | struct sym_cache sym_cache; | |
| 65f38f15 AM |
3794 | }; |
| 3795 | ||
| 4c52953f AM |
3796 | /* Rename some of the generic section flags to better document how they |
| 3797 | are used here. */ | |
| 3798 | #define has_toc_reloc has_gp_reloc | |
| 3799 | #define makes_toc_func_call need_finalize_relax | |
| 3800 | #define call_check_in_progress reloc_done | |
| 3801 | ||
| 65f38f15 AM |
3802 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
| 3803 | ||
| 3804 | #define ppc_hash_table(p) \ | |
| 3805 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
| 3806 | ||
| 721956f4 AM |
3807 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
| 3808 | ((struct ppc_stub_hash_entry *) \ | |
| 3809 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 3810 | ||
| 3811 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
| 3812 | ((struct ppc_branch_hash_entry *) \ | |
| 3813 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 3814 | ||
| 3815 | /* Create an entry in the stub hash table. */ | |
| 3816 | ||
| 3817 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
3818 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
| 3819 | struct bfd_hash_table *table, | |
| 3820 | const char *string) | |
| 721956f4 AM |
3821 | { |
| 3822 | /* Allocate the structure if it has not already been allocated by a | |
| 3823 | subclass. */ | |
| 3824 | if (entry == NULL) | |
| 3825 | { | |
| 3826 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
| 3827 | if (entry == NULL) | |
| 3828 | return entry; | |
| 3829 | } | |
| 3830 | ||
| 3831 | /* Call the allocation method of the superclass. */ | |
| 3832 | entry = bfd_hash_newfunc (entry, table, string); | |
| 3833 | if (entry != NULL) | |
| 3834 | { | |
| 3835 | struct ppc_stub_hash_entry *eh; | |
| 3836 | ||
| 3837 | /* Initialize the local fields. */ | |
| 3838 | eh = (struct ppc_stub_hash_entry *) entry; | |
| ad8e1ba5 | 3839 | eh->stub_type = ppc_stub_none; |
| 721956f4 AM |
3840 | eh->stub_sec = NULL; |
| 3841 | eh->stub_offset = 0; | |
| 3842 | eh->target_value = 0; | |
| 3843 | eh->target_section = NULL; | |
| 721956f4 AM |
3844 | eh->h = NULL; |
| 3845 | eh->id_sec = NULL; | |
| 3846 | } | |
| 3847 | ||
| 3848 | return entry; | |
| 3849 | } | |
| 3850 | ||
| 3851 | /* Create an entry in the branch hash table. */ | |
| 3852 | ||
| 3853 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
3854 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
| 3855 | struct bfd_hash_table *table, | |
| 3856 | const char *string) | |
| 721956f4 AM |
3857 | { |
| 3858 | /* Allocate the structure if it has not already been allocated by a | |
| 3859 | subclass. */ | |
| 3860 | if (entry == NULL) | |
| 3861 | { | |
| 3862 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
| 3863 | if (entry == NULL) | |
| 3864 | return entry; | |
| 3865 | } | |
| 3866 | ||
| 3867 | /* Call the allocation method of the superclass. */ | |
| 3868 | entry = bfd_hash_newfunc (entry, table, string); | |
| 3869 | if (entry != NULL) | |
| 3870 | { | |
| 3871 | struct ppc_branch_hash_entry *eh; | |
| 3872 | ||
| 3873 | /* Initialize the local fields. */ | |
| 3874 | eh = (struct ppc_branch_hash_entry *) entry; | |
| 3875 | eh->offset = 0; | |
| 3876 | eh->iter = 0; | |
| 3877 | } | |
| 3878 | ||
| 3879 | return entry; | |
| 3880 | } | |
| 3881 | ||
| 65f38f15 AM |
3882 | /* Create an entry in a ppc64 ELF linker hash table. */ |
| 3883 | ||
| 3884 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
3885 | link_hash_newfunc (struct bfd_hash_entry *entry, |
| 3886 | struct bfd_hash_table *table, | |
| 3887 | const char *string) | |
| 65f38f15 AM |
3888 | { |
| 3889 | /* Allocate the structure if it has not already been allocated by a | |
| 3890 | subclass. */ | |
| 3891 | if (entry == NULL) | |
| 3892 | { | |
| 3893 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
| 3894 | if (entry == NULL) | |
| 3895 | return entry; | |
| 3896 | } | |
| 3897 | ||
| 3898 | /* Call the allocation method of the superclass. */ | |
| 3899 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
| 3900 | if (entry != NULL) | |
| 3901 | { | |
| 3902 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
| 3903 | ||
| b3fac117 | 3904 | memset (&eh->u.stub_cache, 0, |
| 908b32fc | 3905 | (sizeof (struct ppc_link_hash_entry) |
| b3fac117 AM |
3906 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
| 3907 | ||
| 3908 | /* When making function calls, old ABI code references function entry | |
| 3909 | points (dot symbols), while new ABI code references the function | |
| 3910 | descriptor symbol. We need to make any combination of reference and | |
| 3911 | definition work together, without breaking archive linking. | |
| 3912 | ||
| 3913 | For a defined function "foo" and an undefined call to "bar": | |
| 3914 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
| 3915 | "bar" too). | |
| 3916 | A new object defines "foo" and references "bar". | |
| 3917 | ||
| 3918 | A new object thus has no problem with its undefined symbols being | |
| 3919 | satisfied by definitions in an old object. On the other hand, the | |
| 3920 | old object won't have ".bar" satisfied by a new object. | |
| 3921 | ||
| 3922 | Keep a list of newly added dot-symbols. */ | |
| 3923 | ||
| 3924 | if (string[0] == '.') | |
| 3925 | { | |
| 3926 | struct ppc_link_hash_table *htab; | |
| 3927 | ||
| 3928 | htab = (struct ppc_link_hash_table *) table; | |
| 3929 | eh->u.next_dot_sym = htab->dot_syms; | |
| 3930 | htab->dot_syms = eh; | |
| 3931 | } | |
| 65f38f15 AM |
3932 | } |
| 3933 | ||
| 3934 | return entry; | |
| 3935 | } | |
| 3936 | ||
| 3937 | /* Create a ppc64 ELF linker hash table. */ | |
| 3938 | ||
| 3939 | static struct bfd_link_hash_table * | |
| 4ce794b7 | 3940 | ppc64_elf_link_hash_table_create (bfd *abfd) |
| 65f38f15 AM |
3941 | { |
| 3942 | struct ppc_link_hash_table *htab; | |
| 3943 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
| 3944 | ||
| 4ce794b7 | 3945 | htab = bfd_zmalloc (amt); |
| 65f38f15 AM |
3946 | if (htab == NULL) |
| 3947 | return NULL; | |
| 3948 | ||
| 66eb6687 AM |
3949 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
| 3950 | sizeof (struct ppc_link_hash_entry))) | |
| 65f38f15 | 3951 | { |
| e2d34d7d | 3952 | free (htab); |
| 65f38f15 AM |
3953 | return NULL; |
| 3954 | } | |
| 3955 | ||
| 721956f4 | 3956 | /* Init the stub hash table too. */ |
| 66eb6687 AM |
3957 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
| 3958 | sizeof (struct ppc_stub_hash_entry))) | |
| 721956f4 AM |
3959 | return NULL; |
| 3960 | ||
| 3961 | /* And the branch hash table. */ | |
| 66eb6687 AM |
3962 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
| 3963 | sizeof (struct ppc_branch_hash_entry))) | |
| 721956f4 AM |
3964 | return NULL; |
| 3965 | ||
| 3254fd24 AM |
3966 | /* Initializing two fields of the union is just cosmetic. We really |
| 3967 | only care about glist, but when compiled on a 32-bit host the | |
| 3968 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
| 3969 | debugger inspection of these fields look nicer. */ | |
| a6aa5195 AM |
3970 | htab->elf.init_got_refcount.refcount = 0; |
| 3971 | htab->elf.init_got_refcount.glist = NULL; | |
| 3972 | htab->elf.init_plt_refcount.refcount = 0; | |
| 3973 | htab->elf.init_plt_refcount.glist = NULL; | |
| 3974 | htab->elf.init_got_offset.offset = 0; | |
| 3975 | htab->elf.init_got_offset.glist = NULL; | |
| 3976 | htab->elf.init_plt_offset.offset = 0; | |
| 3977 | htab->elf.init_plt_offset.glist = NULL; | |
| 3254fd24 | 3978 | |
| 65f38f15 AM |
3979 | return &htab->elf.root; |
| 3980 | } | |
| 3981 | ||
| 721956f4 AM |
3982 | /* Free the derived linker hash table. */ |
| 3983 | ||
| 3984 | static void | |
| 4ce794b7 | 3985 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
| 721956f4 AM |
3986 | { |
| 3987 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
| 3988 | ||
| 3989 | bfd_hash_table_free (&ret->stub_hash_table); | |
| 3990 | bfd_hash_table_free (&ret->branch_hash_table); | |
| 3991 | _bfd_generic_link_hash_table_free (hash); | |
| 3992 | } | |
| 3993 | ||
| e717da7e AM |
3994 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
| 3995 | ||
| 3996 | void | |
| 3997 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
| 3998 | { | |
| 3999 | struct ppc_link_hash_table *htab; | |
| 4000 | ||
| 4001 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
| 4002 | ||
| 4003 | /* Always hook our dynamic sections into the first bfd, which is the | |
| 4004 | linker created stub bfd. This ensures that the GOT header is at | |
| 4005 | the start of the output TOC section. */ | |
| 4006 | htab = ppc_hash_table (info); | |
| 4007 | htab->stub_bfd = abfd; | |
| 4008 | htab->elf.dynobj = abfd; | |
| 4009 | } | |
| 4010 | ||
| 721956f4 AM |
4011 | /* Build a name for an entry in the stub hash table. */ |
| 4012 | ||
| 4013 | static char * | |
| 4ce794b7 AM |
4014 | ppc_stub_name (const asection *input_section, |
| 4015 | const asection *sym_sec, | |
| 4016 | const struct ppc_link_hash_entry *h, | |
| 4017 | const Elf_Internal_Rela *rel) | |
| 721956f4 AM |
4018 | { |
| 4019 | char *stub_name; | |
| 4020 | bfd_size_type len; | |
| 4021 | ||
| 4022 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
| 4023 | offsets from a sym as a branch target? In fact, we could | |
| 4024 | probably assume the addend is always zero. */ | |
| 4025 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
| 4026 | ||
| 4027 | if (h) | |
| 4028 | { | |
| 4029 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
| 4030 | stub_name = bfd_malloc (len); | |
| 46de2a7c AM |
4031 | if (stub_name == NULL) |
| 4032 | return stub_name; | |
| 4033 | ||
| 4034 | sprintf (stub_name, "%08x.%s+%x", | |
| 4035 | input_section->id & 0xffffffff, | |
| 4036 | h->elf.root.root.string, | |
| 4037 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 AM |
4038 | } |
| 4039 | else | |
| 4040 | { | |
| ad8e1ba5 | 4041 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
| 721956f4 | 4042 | stub_name = bfd_malloc (len); |
| 46de2a7c AM |
4043 | if (stub_name == NULL) |
| 4044 | return stub_name; | |
| 4045 | ||
| 4046 | sprintf (stub_name, "%08x.%x:%x+%x", | |
| 4047 | input_section->id & 0xffffffff, | |
| 4048 | sym_sec->id & 0xffffffff, | |
| 4049 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
| 4050 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 | 4051 | } |
| ee75fd95 AM |
4052 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
| 4053 | stub_name[len - 2] = 0; | |
| 721956f4 AM |
4054 | return stub_name; |
| 4055 | } | |
| 4056 | ||
| 4057 | /* Look up an entry in the stub hash. Stub entries are cached because | |
| 4058 | creating the stub name takes a bit of time. */ | |
| 4059 | ||
| 4060 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
4061 | ppc_get_stub_entry (const asection *input_section, |
| 4062 | const asection *sym_sec, | |
| 039b3fef | 4063 | struct ppc_link_hash_entry *h, |
| 4ce794b7 AM |
4064 | const Elf_Internal_Rela *rel, |
| 4065 | struct ppc_link_hash_table *htab) | |
| 721956f4 AM |
4066 | { |
| 4067 | struct ppc_stub_hash_entry *stub_entry; | |
| 721956f4 AM |
4068 | const asection *id_sec; |
| 4069 | ||
| 4070 | /* If this input section is part of a group of sections sharing one | |
| 4071 | stub section, then use the id of the first section in the group. | |
| 4072 | Stub names need to include a section id, as there may well be | |
| 4073 | more than one stub used to reach say, printf, and we need to | |
| 4074 | distinguish between them. */ | |
| 4075 | id_sec = htab->stub_group[input_section->id].link_sec; | |
| 4076 | ||
| b3fac117 AM |
4077 | if (h != NULL && h->u.stub_cache != NULL |
| 4078 | && h->u.stub_cache->h == h | |
| 4079 | && h->u.stub_cache->id_sec == id_sec) | |
| 721956f4 | 4080 | { |
| b3fac117 | 4081 | stub_entry = h->u.stub_cache; |
| 721956f4 AM |
4082 | } |
| 4083 | else | |
| 4084 | { | |
| 4085 | char *stub_name; | |
| 4086 | ||
| 4087 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
| 4088 | if (stub_name == NULL) | |
| 4089 | return NULL; | |
| 4090 | ||
| 4091 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 4092 | stub_name, FALSE, FALSE); |
| 721956f4 | 4093 | if (h != NULL) |
| b3fac117 | 4094 | h->u.stub_cache = stub_entry; |
| 721956f4 AM |
4095 | |
| 4096 | free (stub_name); | |
| 4097 | } | |
| 4098 | ||
| 4099 | return stub_entry; | |
| 4100 | } | |
| 4101 | ||
| 4102 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
| 4103 | stub entry are initialised. */ | |
| 4104 | ||
| 4105 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
4106 | ppc_add_stub (const char *stub_name, |
| 4107 | asection *section, | |
| 4108 | struct ppc_link_hash_table *htab) | |
| 721956f4 AM |
4109 | { |
| 4110 | asection *link_sec; | |
| 4111 | asection *stub_sec; | |
| 4112 | struct ppc_stub_hash_entry *stub_entry; | |
| 4113 | ||
| 4114 | link_sec = htab->stub_group[section->id].link_sec; | |
| 4115 | stub_sec = htab->stub_group[section->id].stub_sec; | |
| 4116 | if (stub_sec == NULL) | |
| 4117 | { | |
| 4118 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
| 4119 | if (stub_sec == NULL) | |
| 4120 | { | |
| d4c88bbb | 4121 | size_t namelen; |
| 721956f4 AM |
4122 | bfd_size_type len; |
| 4123 | char *s_name; | |
| 4124 | ||
| d4c88bbb AM |
4125 | namelen = strlen (link_sec->name); |
| 4126 | len = namelen + sizeof (STUB_SUFFIX); | |
| 721956f4 AM |
4127 | s_name = bfd_alloc (htab->stub_bfd, len); |
| 4128 | if (s_name == NULL) | |
| 4129 | return NULL; | |
| 4130 | ||
| d4c88bbb AM |
4131 | memcpy (s_name, link_sec->name, namelen); |
| 4132 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
| 721956f4 AM |
4133 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
| 4134 | if (stub_sec == NULL) | |
| 4135 | return NULL; | |
| 4136 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
| 4137 | } | |
| 4138 | htab->stub_group[section->id].stub_sec = stub_sec; | |
| 4139 | } | |
| 4140 | ||
| 4141 | /* Enter this entry into the linker stub hash table. */ | |
| 4142 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
| b34976b6 | 4143 | TRUE, FALSE); |
| 721956f4 AM |
4144 | if (stub_entry == NULL) |
| 4145 | { | |
| d003868e AM |
4146 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
| 4147 | section->owner, stub_name); | |
| 721956f4 AM |
4148 | return NULL; |
| 4149 | } | |
| 4150 | ||
| 4151 | stub_entry->stub_sec = stub_sec; | |
| 4152 | stub_entry->stub_offset = 0; | |
| 4153 | stub_entry->id_sec = link_sec; | |
| 4154 | return stub_entry; | |
| 4155 | } | |
| 4156 | ||
| 82bd7b59 AM |
4157 | /* Create sections for linker generated code. */ |
| 4158 | ||
| b34976b6 | 4159 | static bfd_boolean |
| 4ce794b7 | 4160 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
| 82bd7b59 AM |
4161 | { |
| 4162 | struct ppc_link_hash_table *htab; | |
| 4163 | flagword flags; | |
| 4164 | ||
| 4165 | htab = ppc_hash_table (info); | |
| 4166 | ||
| 4167 | /* Create .sfpr for code to save and restore fp regs. */ | |
| 4168 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
| 4169 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 3496cb2a L |
4170 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
| 4171 | flags); | |
| 82bd7b59 | 4172 | if (htab->sfpr == NULL |
| 82bd7b59 | 4173 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
| b34976b6 | 4174 | return FALSE; |
| 82bd7b59 | 4175 | |
| 721956f4 | 4176 | /* Create .glink for lazy dynamic linking support. */ |
| 3496cb2a L |
4177 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
| 4178 | flags); | |
| 4ce794b7 | 4179 | if (htab->glink == NULL |
| ee4bf8d2 | 4180 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
| b34976b6 | 4181 | return FALSE; |
| 82bd7b59 | 4182 | |
| e054468f AM |
4183 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
| 4184 | htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); | |
| 4185 | if (htab->iplt == NULL | |
| 4186 | || ! bfd_set_section_alignment (dynobj, htab->iplt, 3)) | |
| 4187 | return FALSE; | |
| 4188 | ||
| 4189 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
| 4190 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4191 | htab->reliplt = bfd_make_section_anyway_with_flags (dynobj, | |
| 4192 | ".rela.iplt", | |
| 4193 | flags); | |
| 4194 | if (htab->reliplt == NULL | |
| 4195 | || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3)) | |
| 4196 | return FALSE; | |
| 4197 | ||
| c456f082 | 4198 | /* Create branch lookup table for plt_branch stubs. */ |
| e4e0193e AM |
4199 | flags = (SEC_ALLOC | SEC_LOAD |
| 4200 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4201 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
| 4202 | flags); | |
| 4ce794b7 | 4203 | if (htab->brlt == NULL |
| 4ce794b7 | 4204 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
| b34976b6 | 4205 | return FALSE; |
| 721956f4 | 4206 | |
| e4e0193e | 4207 | if (!info->shared) |
| c456f082 AM |
4208 | return TRUE; |
| 4209 | ||
| e4e0193e AM |
4210 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
| 4211 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4212 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
| 4213 | ".rela.branch_lt", | |
| 4214 | flags); | |
| e054468f | 4215 | if (htab->relbrlt == NULL |
| c456f082 AM |
4216 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
| 4217 | return FALSE; | |
| 4218 | ||
| b34976b6 | 4219 | return TRUE; |
| 82bd7b59 AM |
4220 | } |
| 4221 | ||
| e717da7e AM |
4222 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
| 4223 | not already done. */ | |
| 65f38f15 | 4224 | |
| b34976b6 | 4225 | static bfd_boolean |
| e717da7e | 4226 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 65f38f15 | 4227 | { |
| e717da7e AM |
4228 | asection *got, *relgot; |
| 4229 | flagword flags; | |
| 4230 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 65f38f15 | 4231 | |
| 0c8d6e5c | 4232 | if (!is_ppc64_elf (abfd)) |
| 0ffa91dd NC |
4233 | return FALSE; |
| 4234 | ||
| 4ce794b7 | 4235 | if (!htab->got) |
| e717da7e AM |
4236 | { |
| 4237 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
| 4238 | return FALSE; | |
| 4239 | ||
| 4240 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
| 4241 | if (!htab->got) | |
| 4242 | abort (); | |
| 4243 | } | |
| 4244 | ||
| 4245 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
| 4246 | | SEC_LINKER_CREATED); | |
| 4247 | ||
| c456f082 | 4248 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
| e717da7e | 4249 | if (!got |
| e717da7e AM |
4250 | || !bfd_set_section_alignment (abfd, got, 3)) |
| 4251 | return FALSE; | |
| 65f38f15 | 4252 | |
| c456f082 AM |
4253 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
| 4254 | flags | SEC_READONLY); | |
| e717da7e | 4255 | if (!relgot |
| e717da7e | 4256 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
| b34976b6 | 4257 | return FALSE; |
| e717da7e AM |
4258 | |
| 4259 | ppc64_elf_tdata (abfd)->got = got; | |
| 4260 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
| b34976b6 | 4261 | return TRUE; |
| 65f38f15 | 4262 | } |
| 5bd4f169 | 4263 | |
| 82bd7b59 | 4264 | /* Create the dynamic sections, and set up shortcuts. */ |
| 5bd4f169 | 4265 | |
| b34976b6 | 4266 | static bfd_boolean |
| 4ce794b7 | 4267 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
| 5bd4f169 | 4268 | { |
| 65f38f15 | 4269 | struct ppc_link_hash_table *htab; |
| 5bd4f169 | 4270 | |
| 65f38f15 | 4271 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
| b34976b6 | 4272 | return FALSE; |
| 65f38f15 | 4273 | |
| e717da7e AM |
4274 | htab = ppc_hash_table (info); |
| 4275 | if (!htab->got) | |
| 4276 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
| 4ce794b7 AM |
4277 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
| 4278 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
| 4279 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
| 65f38f15 | 4280 | if (!info->shared) |
| 4ce794b7 | 4281 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
| 65f38f15 | 4282 | |
| e717da7e | 4283 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
| 4ce794b7 | 4284 | || (!info->shared && !htab->relbss)) |
| 65f38f15 AM |
4285 | abort (); |
| 4286 | ||
| b34976b6 | 4287 | return TRUE; |
| 5bd4f169 AM |
4288 | } |
| 4289 | ||
| b31867b6 AM |
4290 | /* Follow indirect and warning symbol links. */ |
| 4291 | ||
| 4292 | static inline struct bfd_link_hash_entry * | |
| 4293 | follow_link (struct bfd_link_hash_entry *h) | |
| 4294 | { | |
| 4295 | while (h->type == bfd_link_hash_indirect | |
| 4296 | || h->type == bfd_link_hash_warning) | |
| 4297 | h = h->u.i.link; | |
| 4298 | return h; | |
| 4299 | } | |
| 4300 | ||
| 4301 | static inline struct elf_link_hash_entry * | |
| 4302 | elf_follow_link (struct elf_link_hash_entry *h) | |
| 4303 | { | |
| 4304 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
| 4305 | } | |
| 4306 | ||
| 4307 | static inline struct ppc_link_hash_entry * | |
| 4308 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
| 4309 | { | |
| 4310 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
| 4311 | } | |
| 4312 | ||
| 40d16e0b AM |
4313 | /* Merge PLT info on FROM with that on TO. */ |
| 4314 | ||
| 4315 | static void | |
| 4316 | move_plt_plist (struct ppc_link_hash_entry *from, | |
| 4317 | struct ppc_link_hash_entry *to) | |
| 4318 | { | |
| 4319 | if (from->elf.plt.plist != NULL) | |
| 4320 | { | |
| 4321 | if (to->elf.plt.plist != NULL) | |
| 4322 | { | |
| 4323 | struct plt_entry **entp; | |
| 4324 | struct plt_entry *ent; | |
| 4325 | ||
| 4326 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
| 4327 | { | |
| 4328 | struct plt_entry *dent; | |
| 4329 | ||
| 4330 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
| 4331 | if (dent->addend == ent->addend) | |
| 4332 | { | |
| 4333 | dent->plt.refcount += ent->plt.refcount; | |
| 4334 | *entp = ent->next; | |
| 4335 | break; | |
| 4336 | } | |
| 4337 | if (dent == NULL) | |
| 4338 | entp = &ent->next; | |
| 4339 | } | |
| 4340 | *entp = to->elf.plt.plist; | |
| 4341 | } | |
| 4342 | ||
| 4343 | to->elf.plt.plist = from->elf.plt.plist; | |
| 4344 | from->elf.plt.plist = NULL; | |
| 4345 | } | |
| 4346 | } | |
| 4347 | ||
| 65f38f15 AM |
4348 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 4349 | ||
| 4350 | static void | |
| fcfa13d2 AM |
4351 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 4352 | struct elf_link_hash_entry *dir, | |
| 4353 | struct elf_link_hash_entry *ind) | |
| 65f38f15 AM |
4354 | { |
| 4355 | struct ppc_link_hash_entry *edir, *eind; | |
| 4356 | ||
| 4357 | edir = (struct ppc_link_hash_entry *) dir; | |
| 4358 | eind = (struct ppc_link_hash_entry *) ind; | |
| 4359 | ||
| 411e1bfb | 4360 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
| bbd7ec4a | 4361 | if (eind->dyn_relocs != NULL) |
| 65f38f15 | 4362 | { |
| bbd7ec4a AM |
4363 | if (edir->dyn_relocs != NULL) |
| 4364 | { | |
| 4365 | struct ppc_dyn_relocs **pp; | |
| 4366 | struct ppc_dyn_relocs *p; | |
| 4367 | ||
| fcfa13d2 | 4368 | /* Add reloc counts against the indirect sym to the direct sym |
| bbd7ec4a AM |
4369 | list. Merge any entries against the same section. */ |
| 4370 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
| 4371 | { | |
| 4372 | struct ppc_dyn_relocs *q; | |
| 4373 | ||
| 4374 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
| 4375 | if (q->sec == p->sec) | |
| 4376 | { | |
| 4377 | q->pc_count += p->pc_count; | |
| 4378 | q->count += p->count; | |
| 4379 | *pp = p->next; | |
| 4380 | break; | |
| 4381 | } | |
| 4382 | if (q == NULL) | |
| 4383 | pp = &p->next; | |
| 4384 | } | |
| 4385 | *pp = edir->dyn_relocs; | |
| 4386 | } | |
| 4387 | ||
| 65f38f15 AM |
4388 | edir->dyn_relocs = eind->dyn_relocs; |
| 4389 | eind->dyn_relocs = NULL; | |
| 4390 | } | |
| 65f38f15 | 4391 | |
| 6349e628 AM |
4392 | edir->is_func |= eind->is_func; |
| 4393 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
| 58ac9f71 | 4394 | edir->tls_mask |= eind->tls_mask; |
| b31867b6 AM |
4395 | if (eind->oh != NULL) |
| 4396 | edir->oh = ppc_follow_link (eind->oh); | |
| 6349e628 | 4397 | |
| 81848ca0 | 4398 | /* If called to transfer flags for a weakdef during processing |
| f5385ebf | 4399 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
| 81848ca0 | 4400 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
| f5385ebf AM |
4401 | if (!(ELIMINATE_COPY_RELOCS |
| 4402 | && eind->elf.root.type != bfd_link_hash_indirect | |
| 4403 | && edir->elf.dynamic_adjusted)) | |
| 4404 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
| 81848ca0 | 4405 | |
| f5385ebf AM |
4406 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
| 4407 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
| 4408 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
| 4409 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
| 6349e628 AM |
4410 | |
| 4411 | /* If we were called to copy over info for a weak sym, that's all. */ | |
| 4412 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
| 4413 | return; | |
| 4414 | ||
| 81848ca0 AM |
4415 | /* Copy over got entries that we may have already seen to the |
| 4416 | symbol which just became indirect. */ | |
| 411e1bfb AM |
4417 | if (eind->elf.got.glist != NULL) |
| 4418 | { | |
| 4419 | if (edir->elf.got.glist != NULL) | |
| 4420 | { | |
| 4421 | struct got_entry **entp; | |
| 4422 | struct got_entry *ent; | |
| 4423 | ||
| 4424 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
| 4425 | { | |
| 4426 | struct got_entry *dent; | |
| 4427 | ||
| 4428 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
| 4429 | if (dent->addend == ent->addend | |
| e717da7e | 4430 | && dent->owner == ent->owner |
| 411e1bfb AM |
4431 | && dent->tls_type == ent->tls_type) |
| 4432 | { | |
| 4433 | dent->got.refcount += ent->got.refcount; | |
| 4434 | *entp = ent->next; | |
| 4435 | break; | |
| 4436 | } | |
| 4437 | if (dent == NULL) | |
| 4438 | entp = &ent->next; | |
| 4439 | } | |
| 4440 | *entp = edir->elf.got.glist; | |
| 4441 | } | |
| 4442 | ||
| 4443 | edir->elf.got.glist = eind->elf.got.glist; | |
| 4444 | eind->elf.got.glist = NULL; | |
| 4445 | } | |
| 4446 | ||
| 4447 | /* And plt entries. */ | |
| 40d16e0b | 4448 | move_plt_plist (eind, edir); |
| 411e1bfb | 4449 | |
| fcfa13d2 | 4450 | if (eind->elf.dynindx != -1) |
| 411e1bfb | 4451 | { |
| fcfa13d2 AM |
4452 | if (edir->elf.dynindx != -1) |
| 4453 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 4454 | edir->elf.dynstr_index); | |
| 411e1bfb AM |
4455 | edir->elf.dynindx = eind->elf.dynindx; |
| 4456 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
| 4457 | eind->elf.dynindx = -1; | |
| 4458 | eind->elf.dynstr_index = 0; | |
| 4459 | } | |
| 411e1bfb AM |
4460 | } |
| 4461 | ||
| 8387904d AM |
4462 | /* Find the function descriptor hash entry from the given function code |
| 4463 | hash entry FH. Link the entries via their OH fields. */ | |
| 4464 | ||
| 4465 | static struct ppc_link_hash_entry * | |
| b31867b6 | 4466 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
| 8387904d AM |
4467 | { |
| 4468 | struct ppc_link_hash_entry *fdh = fh->oh; | |
| 4469 | ||
| 4470 | if (fdh == NULL) | |
| 4471 | { | |
| 4472 | const char *fd_name = fh->elf.root.root.string + 1; | |
| 4473 | ||
| 4474 | fdh = (struct ppc_link_hash_entry *) | |
| 4475 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
| b31867b6 AM |
4476 | if (fdh == NULL) |
| 4477 | return fdh; | |
| 4478 | ||
| 4479 | fdh->is_func_descriptor = 1; | |
| 4480 | fdh->oh = fh; | |
| 4481 | fh->is_func = 1; | |
| 4482 | fh->oh = fdh; | |
| 8387904d AM |
4483 | } |
| 4484 | ||
| b31867b6 | 4485 | return ppc_follow_link (fdh); |
| 8387904d AM |
4486 | } |
| 4487 | ||
| bb700d78 AM |
4488 | /* Make a fake function descriptor sym for the code sym FH. */ |
| 4489 | ||
| 4490 | static struct ppc_link_hash_entry * | |
| 4491 | make_fdh (struct bfd_link_info *info, | |
| 908b32fc | 4492 | struct ppc_link_hash_entry *fh) |
| bb700d78 AM |
4493 | { |
| 4494 | bfd *abfd; | |
| 4495 | asymbol *newsym; | |
| 4496 | struct bfd_link_hash_entry *bh; | |
| 4497 | struct ppc_link_hash_entry *fdh; | |
| 4498 | ||
| 4499 | abfd = fh->elf.root.u.undef.abfd; | |
| 4500 | newsym = bfd_make_empty_symbol (abfd); | |
| 4501 | newsym->name = fh->elf.root.root.string + 1; | |
| 4502 | newsym->section = bfd_und_section_ptr; | |
| 4503 | newsym->value = 0; | |
| 908b32fc | 4504 | newsym->flags = BSF_WEAK; |
| bb700d78 AM |
4505 | |
| 4506 | bh = NULL; | |
| 4507 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
| 4508 | newsym->flags, newsym->section, | |
| 4509 | newsym->value, NULL, FALSE, FALSE, | |
| 4510 | &bh)) | |
| 4511 | return NULL; | |
| 4512 | ||
| 4513 | fdh = (struct ppc_link_hash_entry *) bh; | |
| 4514 | fdh->elf.non_elf = 0; | |
| 908b32fc AM |
4515 | fdh->fake = 1; |
| 4516 | fdh->is_func_descriptor = 1; | |
| 4517 | fdh->oh = fh; | |
| 4518 | fh->is_func = 1; | |
| 4519 | fh->oh = fdh; | |
| bb700d78 AM |
4520 | return fdh; |
| 4521 | } | |
| 4522 | ||
| 8387904d AM |
4523 | /* Fix function descriptor symbols defined in .opd sections to be |
| 4524 | function type. */ | |
| 555cd476 AM |
4525 | |
| 4526 | static bfd_boolean | |
| b3fac117 | 4527 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
| e054468f | 4528 | struct bfd_link_info *info, |
| 555cd476 | 4529 | Elf_Internal_Sym *isym, |
| b3fac117 | 4530 | const char **name ATTRIBUTE_UNUSED, |
| 555cd476 AM |
4531 | flagword *flags ATTRIBUTE_UNUSED, |
| 4532 | asection **sec, | |
| 4533 | bfd_vma *value ATTRIBUTE_UNUSED) | |
| 4534 | { | |
| e054468f AM |
4535 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
| 4536 | elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE; | |
| 4537 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) | |
| 4538 | ; | |
| 4539 | else if (*sec != NULL | |
| 4540 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
| 555cd476 | 4541 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
| 433817dd | 4542 | |
| 555cd476 AM |
4543 | return TRUE; |
| 4544 | } | |
| 4545 | ||
| 8387904d | 4546 | /* This function makes an old ABI object reference to ".bar" cause the |
| 908b32fc AM |
4547 | inclusion of a new ABI object archive that defines "bar". |
| 4548 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
| 4549 | table that might be satisfied by the archive symbols. */ | |
| 8387904d AM |
4550 | |
| 4551 | static struct elf_link_hash_entry * | |
| 4552 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
| 4553 | struct bfd_link_info *info, | |
| 4554 | const char *name) | |
| 4555 | { | |
| 4556 | struct elf_link_hash_entry *h; | |
| 4557 | char *dot_name; | |
| 4558 | size_t len; | |
| 4559 | ||
| 4560 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
| 908b32fc AM |
4561 | if (h != NULL |
| 4562 | /* Don't return this sym if it is a fake function descriptor | |
| 4563 | created by add_symbol_adjust. */ | |
| 4564 | && !(h->root.type == bfd_link_hash_undefweak | |
| 4565 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
| 8387904d AM |
4566 | return h; |
| 4567 | ||
| 4568 | if (name[0] == '.') | |
| 4569 | return h; | |
| 4570 | ||
| 4571 | len = strlen (name); | |
| 4572 | dot_name = bfd_alloc (abfd, len + 2); | |
| 4573 | if (dot_name == NULL) | |
| 4574 | return (struct elf_link_hash_entry *) 0 - 1; | |
| 4575 | dot_name[0] = '.'; | |
| 4576 | memcpy (dot_name + 1, name, len + 1); | |
| 4577 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
| 4578 | bfd_release (abfd, dot_name); | |
| 4579 | return h; | |
| 4580 | } | |
| 4581 | ||
| 4582 | /* This function satisfies all old ABI object references to ".bar" if a | |
| 99877b66 AM |
4583 | new ABI object defines "bar". Well, at least, undefined dot symbols |
| 4584 | are made weak. This stops later archive searches from including an | |
| 4585 | object if we already have a function descriptor definition. It also | |
| 35b0ce59 AM |
4586 | prevents the linker complaining about undefined symbols. |
| 4587 | We also check and correct mismatched symbol visibility here. The | |
| 4588 | most restrictive visibility of the function descriptor and the | |
| 4589 | function entry symbol is used. */ | |
| 8387904d AM |
4590 | |
| 4591 | static bfd_boolean | |
| b3fac117 | 4592 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
| 8387904d | 4593 | { |
| 8387904d AM |
4594 | struct ppc_link_hash_table *htab; |
| 4595 | struct ppc_link_hash_entry *fdh; | |
| 4596 | ||
| b3fac117 | 4597 | if (eh->elf.root.type == bfd_link_hash_indirect) |
| 8387904d AM |
4598 | return TRUE; |
| 4599 | ||
| b3fac117 AM |
4600 | if (eh->elf.root.type == bfd_link_hash_warning) |
| 4601 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
| 8387904d | 4602 | |
| b3fac117 AM |
4603 | if (eh->elf.root.root.string[0] != '.') |
| 4604 | abort (); | |
| 8387904d | 4605 | |
| b3fac117 | 4606 | htab = ppc_hash_table (info); |
| b31867b6 AM |
4607 | fdh = lookup_fdh (eh, htab); |
| 4608 | if (fdh == NULL) | |
| 4609 | { | |
| 4610 | if (!info->relocatable | |
| 4611 | && (eh->elf.root.type == bfd_link_hash_undefined | |
| 4612 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
| 4613 | && eh->elf.ref_regular) | |
| 4614 | { | |
| 4615 | /* Make an undefweak function descriptor sym, which is enough to | |
| 4616 | pull in an --as-needed shared lib, but won't cause link | |
| 4617 | errors. Archives are handled elsewhere. */ | |
| 4618 | fdh = make_fdh (info, eh); | |
| 4619 | if (fdh == NULL) | |
| 4620 | return FALSE; | |
| 4621 | fdh->elf.ref_regular = 1; | |
| 4622 | } | |
| bb700d78 | 4623 | } |
| b31867b6 | 4624 | else |
| 8387904d | 4625 | { |
| 35b0ce59 AM |
4626 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
| 4627 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
| 4628 | if (entry_vis < descr_vis) | |
| 4629 | fdh->elf.other += entry_vis - descr_vis; | |
| 4630 | else if (entry_vis > descr_vis) | |
| 4631 | eh->elf.other += descr_vis - entry_vis; | |
| 4632 | ||
| e87d886e AM |
4633 | if ((fdh->elf.root.type == bfd_link_hash_defined |
| 4634 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 4635 | && eh->elf.root.type == bfd_link_hash_undefined) | |
| 35b0ce59 AM |
4636 | { |
| 4637 | eh->elf.root.type = bfd_link_hash_undefweak; | |
| 4638 | eh->was_undefined = 1; | |
| 4639 | htab->twiddled_syms = 1; | |
| 4640 | } | |
| 8387904d | 4641 | } |
| 99877b66 | 4642 | |
| 8387904d AM |
4643 | return TRUE; |
| 4644 | } | |
| 4645 | ||
| b3fac117 AM |
4646 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
| 4647 | ||
| 8387904d | 4648 | static bfd_boolean |
| 7d9616d7 | 4649 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
| 8387904d | 4650 | { |
| 99877b66 | 4651 | struct ppc_link_hash_table *htab; |
| b3fac117 | 4652 | struct ppc_link_hash_entry **p, *eh; |
| 433817dd | 4653 | |
| 99877b66 | 4654 | htab = ppc_hash_table (info); |
| 0c8d6e5c | 4655 | if (!is_ppc64_elf (info->output_bfd)) |
| 35b0ce59 AM |
4656 | return TRUE; |
| 4657 | ||
| 0c8d6e5c | 4658 | if (is_ppc64_elf (ibfd)) |
| b3fac117 AM |
4659 | { |
| 4660 | p = &htab->dot_syms; | |
| 4661 | while ((eh = *p) != NULL) | |
| 4662 | { | |
| 4663 | *p = NULL; | |
| 4664 | if (!add_symbol_adjust (eh, info)) | |
| 4665 | return FALSE; | |
| 4666 | p = &eh->u.next_dot_sym; | |
| 4667 | } | |
| 4668 | } | |
| 4669 | ||
| 4670 | /* Clear the list for non-ppc64 input files. */ | |
| 4671 | p = &htab->dot_syms; | |
| 4672 | while ((eh = *p) != NULL) | |
| 4673 | { | |
| 4674 | *p = NULL; | |
| 4675 | p = &eh->u.next_dot_sym; | |
| 4676 | } | |
| 99877b66 AM |
4677 | |
| 4678 | /* We need to fix the undefs list for any syms we have twiddled to | |
| 4679 | undef_weak. */ | |
| 4680 | if (htab->twiddled_syms) | |
| 4681 | { | |
| 77cfaee6 | 4682 | bfd_link_repair_undef_list (&htab->elf.root); |
| 99877b66 AM |
4683 | htab->twiddled_syms = 0; |
| 4684 | } | |
| b3fac117 | 4685 | return TRUE; |
| 8387904d AM |
4686 | } |
| 4687 | ||
| 97fed1c9 JJ |
4688 | /* Undo hash table changes when an --as-needed input file is determined |
| 4689 | not to be needed. */ | |
| 4690 | ||
| 4691 | static bfd_boolean | |
| 4692 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
| 4693 | struct bfd_link_info *info) | |
| 4694 | { | |
| 4695 | ppc_hash_table (info)->dot_syms = NULL; | |
| 4696 | return TRUE; | |
| 4697 | } | |
| 4698 | ||
| e054468f | 4699 | static struct plt_entry ** |
| 4ce794b7 AM |
4700 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
| 4701 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
| 411e1bfb AM |
4702 | { |
| 4703 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
| e054468f | 4704 | struct plt_entry **local_plt; |
| e7b938ca | 4705 | char *local_got_tls_masks; |
| 411e1bfb AM |
4706 | |
| 4707 | if (local_got_ents == NULL) | |
| 4708 | { | |
| 4709 | bfd_size_type size = symtab_hdr->sh_info; | |
| 4710 | ||
| e054468f AM |
4711 | size *= (sizeof (*local_got_ents) |
| 4712 | + sizeof (*local_plt) | |
| 4713 | + sizeof (*local_got_tls_masks)); | |
| 4ce794b7 | 4714 | local_got_ents = bfd_zalloc (abfd, size); |
| 411e1bfb | 4715 | if (local_got_ents == NULL) |
| e054468f | 4716 | return NULL; |
| 411e1bfb AM |
4717 | elf_local_got_ents (abfd) = local_got_ents; |
| 4718 | } | |
| 4719 | ||
| e054468f | 4720 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
| 411e1bfb AM |
4721 | { |
| 4722 | struct got_entry *ent; | |
| 4723 | ||
| 4724 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
| e717da7e AM |
4725 | if (ent->addend == r_addend |
| 4726 | && ent->owner == abfd | |
| 4727 | && ent->tls_type == tls_type) | |
| 411e1bfb AM |
4728 | break; |
| 4729 | if (ent == NULL) | |
| 4730 | { | |
| 4731 | bfd_size_type amt = sizeof (*ent); | |
| 4ce794b7 | 4732 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
4733 | if (ent == NULL) |
| 4734 | return FALSE; | |
| 4735 | ent->next = local_got_ents[r_symndx]; | |
| 4736 | ent->addend = r_addend; | |
| e717da7e | 4737 | ent->owner = abfd; |
| 411e1bfb AM |
4738 | ent->tls_type = tls_type; |
| 4739 | ent->got.refcount = 0; | |
| 4740 | local_got_ents[r_symndx] = ent; | |
| 4741 | } | |
| 4742 | ent->got.refcount += 1; | |
| 4743 | } | |
| 4744 | ||
| e054468f AM |
4745 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
| 4746 | local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
| e7b938ca | 4747 | local_got_tls_masks[r_symndx] |= tls_type; |
| e054468f AM |
4748 | |
| 4749 | return local_plt + r_symndx; | |
| 65f38f15 AM |
4750 | } |
| 4751 | ||
| 411e1bfb | 4752 | static bfd_boolean |
| e054468f | 4753 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
| 1e2f5b6e | 4754 | { |
| 411e1bfb | 4755 | struct plt_entry *ent; |
| 1e2f5b6e | 4756 | |
| e054468f | 4757 | for (ent = *plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
4758 | if (ent->addend == addend) |
| 4759 | break; | |
| 4760 | if (ent == NULL) | |
| 1e2f5b6e | 4761 | { |
| 411e1bfb | 4762 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 4763 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
4764 | if (ent == NULL) |
| 4765 | return FALSE; | |
| e054468f | 4766 | ent->next = *plist; |
| 411e1bfb AM |
4767 | ent->addend = addend; |
| 4768 | ent->plt.refcount = 0; | |
| e054468f | 4769 | *plist = ent; |
| 1e2f5b6e | 4770 | } |
| 411e1bfb | 4771 | ent->plt.refcount += 1; |
| b34976b6 | 4772 | return TRUE; |
| 1e2f5b6e AM |
4773 | } |
| 4774 | ||
| e054468f AM |
4775 | static bfd_boolean |
| 4776 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
| 4777 | { | |
| 4778 | return (r_type == R_PPC64_REL24 | |
| 4779 | || r_type == R_PPC64_REL14 | |
| 4780 | || r_type == R_PPC64_REL14_BRTAKEN | |
| 4781 | || r_type == R_PPC64_REL14_BRNTAKEN | |
| 4782 | || r_type == R_PPC64_ADDR24 | |
| 4783 | || r_type == R_PPC64_ADDR14 | |
| 4784 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
| 4785 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
| 4786 | } | |
| 4787 | ||
| 5bd4f169 | 4788 | /* Look through the relocs for a section during the first phase, and |
| 65f38f15 | 4789 | calculate needed space in the global offset table, procedure |
| 5d1634d7 | 4790 | linkage table, and dynamic reloc sections. */ |
| 5bd4f169 | 4791 | |
| b34976b6 | 4792 | static bfd_boolean |
| 4ce794b7 AM |
4793 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 4794 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 4795 | { |
| 65f38f15 | 4796 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
4797 | Elf_Internal_Shdr *symtab_hdr; |
| 4798 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
| 4799 | const Elf_Internal_Rela *rel; | |
| 4800 | const Elf_Internal_Rela *rel_end; | |
| 5bd4f169 | 4801 | asection *sreloc; |
| 1e2f5b6e | 4802 | asection **opd_sym_map; |
| 3a71aa26 | 4803 | struct elf_link_hash_entry *tga, *dottga; |
| 5bd4f169 | 4804 | |
| 1049f94e | 4805 | if (info->relocatable) |
| b34976b6 | 4806 | return TRUE; |
| 5bd4f169 | 4807 | |
| 680a3378 AM |
4808 | /* Don't do anything special with non-loaded, non-alloced sections. |
| 4809 | In particular, any relocs in such sections should not affect GOT | |
| 4810 | and PLT reference counting (ie. we don't allow them to create GOT | |
| 4811 | or PLT entries), there's no possibility or desire to optimize TLS | |
| 4812 | relocs, and there's not much point in propagating relocs to shared | |
| 4813 | libs that the dynamic linker won't relocate. */ | |
| 4814 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 4815 | return TRUE; | |
| 4816 | ||
| 0c8d6e5c | 4817 | BFD_ASSERT (is_ppc64_elf (abfd)); |
| 0ffa91dd | 4818 | |
| 65f38f15 | 4819 | htab = ppc_hash_table (info); |
| 3a71aa26 AM |
4820 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
| 4821 | FALSE, FALSE, TRUE); | |
| 4822 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 4823 | FALSE, FALSE, TRUE); | |
| 0ffa91dd | 4824 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 AM |
4825 | |
| 4826 | sym_hashes = elf_sym_hashes (abfd); | |
| 4827 | sym_hashes_end = (sym_hashes | |
| 1e2f5b6e AM |
4828 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
| 4829 | - symtab_hdr->sh_info); | |
| 5bd4f169 AM |
4830 | |
| 4831 | sreloc = NULL; | |
| 1e2f5b6e AM |
4832 | opd_sym_map = NULL; |
| 4833 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
| 4834 | { | |
| 4835 | /* Garbage collection needs some extra help with .opd sections. | |
| 4836 | We don't want to necessarily keep everything referenced by | |
| 4837 | relocs in .opd, as that would keep all functions. Instead, | |
| 4838 | if we reference an .opd symbol (a function descriptor), we | |
| 4839 | want to keep the function code symbol's section. This is | |
| 4840 | easy for global symbols, but for local syms we need to keep | |
| 74f0fb50 | 4841 | information about the associated function section. */ |
| 1e2f5b6e AM |
4842 | bfd_size_type amt; |
| 4843 | ||
| 74f0fb50 | 4844 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
| 4ce794b7 | 4845 | opd_sym_map = bfd_zalloc (abfd, amt); |
| 1e2f5b6e | 4846 | if (opd_sym_map == NULL) |
| b34976b6 | 4847 | return FALSE; |
| 74f0fb50 | 4848 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
| 7c8fe5c4 AM |
4849 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
| 4850 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
| 1e2f5b6e | 4851 | } |
| 5bd4f169 | 4852 | |
| 82bd7b59 AM |
4853 | if (htab->sfpr == NULL |
| 4854 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
| b34976b6 | 4855 | return FALSE; |
| 82bd7b59 | 4856 | |
| 5bd4f169 AM |
4857 | rel_end = relocs + sec->reloc_count; |
| 4858 | for (rel = relocs; rel < rel_end; rel++) | |
| 4859 | { | |
| 4860 | unsigned long r_symndx; | |
| 4861 | struct elf_link_hash_entry *h; | |
| 04c9666a | 4862 | enum elf_ppc64_reloc_type r_type; |
| 727fc41e | 4863 | int tls_type; |
| 7c8fe5c4 | 4864 | struct _ppc64_elf_section_data *ppc64_sec; |
| e054468f | 4865 | struct plt_entry **ifunc; |
| 5bd4f169 AM |
4866 | |
| 4867 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 4868 | if (r_symndx < symtab_hdr->sh_info) | |
| 4869 | h = NULL; | |
| 4870 | else | |
| 973a3492 L |
4871 | { |
| 4872 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 4873 | h = elf_follow_link (h); |
| 973a3492 | 4874 | } |
| 5bd4f169 | 4875 | |
| 727fc41e | 4876 | tls_type = 0; |
| e054468f | 4877 | ifunc = NULL; |
| 25f23106 AM |
4878 | if (h != NULL) |
| 4879 | { | |
| 4880 | if (h->type == STT_GNU_IFUNC) | |
| 4881 | { | |
| 4882 | h->needs_plt = 1; | |
| 4883 | ifunc = &h->plt.plist; | |
| 4884 | } | |
| 4885 | } | |
| 4886 | else | |
| 4887 | { | |
| 4888 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 4889 | abfd, r_symndx); | |
| 4890 | if (isym == NULL) | |
| 4891 | return FALSE; | |
| 4892 | ||
| 4893 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
| 4894 | { | |
| 4895 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 4896 | rel->r_addend, PLT_IFUNC); | |
| 4897 | if (ifunc == NULL) | |
| 4898 | return FALSE; | |
| 4899 | } | |
| 4900 | } | |
| 4ce794b7 | 4901 | r_type = ELF64_R_TYPE (rel->r_info); |
| e054468f AM |
4902 | if (is_branch_reloc (r_type)) |
| 4903 | { | |
| 4904 | if (h != NULL && (h == tga || h == dottga)) | |
| 4905 | { | |
| 4906 | if (rel != relocs | |
| 4907 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
| 4908 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
| 4909 | /* We have a new-style __tls_get_addr call with a marker | |
| 4910 | reloc. */ | |
| 4911 | ; | |
| 4912 | else | |
| 4913 | /* Mark this section as having an old-style call. */ | |
| 4914 | sec->has_tls_get_addr_call = 1; | |
| 4915 | } | |
| 727fc41e | 4916 | |
| e054468f | 4917 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
| e054468f AM |
4918 | if (ifunc != NULL |
| 4919 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
| 4920 | return FALSE; | |
| 4921 | } | |
| 727fc41e | 4922 | |
| a33d1f77 | 4923 | switch (r_type) |
| 5bd4f169 | 4924 | { |
| 727fc41e AM |
4925 | case R_PPC64_TLSGD: |
| 4926 | case R_PPC64_TLSLD: | |
| 4927 | /* These special tls relocs tie a call to __tls_get_addr with | |
| 4928 | its parameter symbol. */ | |
| 4929 | break; | |
| 4930 | ||
| 411e1bfb AM |
4931 | case R_PPC64_GOT_TLSLD16: |
| 4932 | case R_PPC64_GOT_TLSLD16_LO: | |
| 4933 | case R_PPC64_GOT_TLSLD16_HI: | |
| 4934 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 4935 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
4936 | goto dogottls; |
| 4937 | ||
| 4938 | case R_PPC64_GOT_TLSGD16: | |
| 4939 | case R_PPC64_GOT_TLSGD16_LO: | |
| 4940 | case R_PPC64_GOT_TLSGD16_HI: | |
| 4941 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 4942 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
4943 | goto dogottls; |
| 4944 | ||
| 4945 | case R_PPC64_GOT_TPREL16_DS: | |
| 4946 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 4947 | case R_PPC64_GOT_TPREL16_HI: | |
| 4948 | case R_PPC64_GOT_TPREL16_HA: | |
| 1d483afe | 4949 | if (!info->executable) |
| 411e1bfb AM |
4950 | info->flags |= DF_STATIC_TLS; |
| 4951 | tls_type = TLS_TLS | TLS_TPREL; | |
| 4952 | goto dogottls; | |
| 4953 | ||
| 4954 | case R_PPC64_GOT_DTPREL16_DS: | |
| 4955 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 4956 | case R_PPC64_GOT_DTPREL16_HI: | |
| 4957 | case R_PPC64_GOT_DTPREL16_HA: | |
| 4958 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 4959 | dogottls: | |
| 4960 | sec->has_tls_reloc = 1; | |
| 4961 | /* Fall thru */ | |
| 4962 | ||
| 5bd4f169 | 4963 | case R_PPC64_GOT16: |
| 5bd4f169 | 4964 | case R_PPC64_GOT16_DS: |
| 65f38f15 AM |
4965 | case R_PPC64_GOT16_HA: |
| 4966 | case R_PPC64_GOT16_HI: | |
| 4967 | case R_PPC64_GOT16_LO: | |
| 5bd4f169 | 4968 | case R_PPC64_GOT16_LO_DS: |
| 65f38f15 | 4969 | /* This symbol requires a global offset table entry. */ |
| 4c52953f | 4970 | sec->has_toc_reloc = 1; |
| e717da7e AM |
4971 | if (ppc64_elf_tdata (abfd)->got == NULL |
| 4972 | && !create_got_section (abfd, info)) | |
| b34976b6 | 4973 | return FALSE; |
| 5bd4f169 AM |
4974 | |
| 4975 | if (h != NULL) | |
| 4976 | { | |
| 411e1bfb AM |
4977 | struct ppc_link_hash_entry *eh; |
| 4978 | struct got_entry *ent; | |
| 65f38f15 | 4979 | |
| 411e1bfb AM |
4980 | eh = (struct ppc_link_hash_entry *) h; |
| 4981 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
| 4982 | if (ent->addend == rel->r_addend | |
| e717da7e | 4983 | && ent->owner == abfd |
| 411e1bfb AM |
4984 | && ent->tls_type == tls_type) |
| 4985 | break; | |
| 4986 | if (ent == NULL) | |
| 5bd4f169 | 4987 | { |
| 411e1bfb | 4988 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 4989 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb | 4990 | if (ent == NULL) |
| b34976b6 | 4991 | return FALSE; |
| 411e1bfb AM |
4992 | ent->next = eh->elf.got.glist; |
| 4993 | ent->addend = rel->r_addend; | |
| e717da7e | 4994 | ent->owner = abfd; |
| 411e1bfb AM |
4995 | ent->tls_type = tls_type; |
| 4996 | ent->got.refcount = 0; | |
| 4997 | eh->elf.got.glist = ent; | |
| 5bd4f169 | 4998 | } |
| 411e1bfb | 4999 | ent->got.refcount += 1; |
| e7b938ca | 5000 | eh->tls_mask |= tls_type; |
| 5bd4f169 | 5001 | } |
| 411e1bfb AM |
5002 | else |
| 5003 | /* This is a global offset table entry for a local symbol. */ | |
| 5004 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5005 | rel->r_addend, tls_type)) | |
| 5006 | return FALSE; | |
| 5bd4f169 AM |
5007 | break; |
| 5008 | ||
| 5bd4f169 | 5009 | case R_PPC64_PLT16_HA: |
| 65f38f15 AM |
5010 | case R_PPC64_PLT16_HI: |
| 5011 | case R_PPC64_PLT16_LO: | |
| 5012 | case R_PPC64_PLT32: | |
| 5013 | case R_PPC64_PLT64: | |
| 5bd4f169 | 5014 | /* This symbol requires a procedure linkage table entry. We |
| 3fad3c7c AM |
5015 | actually build the entry in adjust_dynamic_symbol, |
| 5016 | because this might be a case of linking PIC code without | |
| 5017 | linking in any dynamic objects, in which case we don't | |
| 5018 | need to generate a procedure linkage table after all. */ | |
| 5bd4f169 AM |
5019 | if (h == NULL) |
| 5020 | { | |
| 5021 | /* It does not make sense to have a procedure linkage | |
| 3fad3c7c | 5022 | table entry for a local symbol. */ |
| 5bd4f169 | 5023 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 5024 | return FALSE; |
| 5bd4f169 | 5025 | } |
| 411e1bfb | 5026 | else |
| e054468f AM |
5027 | { |
| 5028 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
| 5029 | return FALSE; | |
| 5030 | h->needs_plt = 1; | |
| 5031 | if (h->root.root.string[0] == '.' | |
| 5032 | && h->root.root.string[1] != '\0') | |
| 5033 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 5034 | } | |
| 5bd4f169 AM |
5035 | break; |
| 5036 | ||
| 5037 | /* The following relocations don't need to propagate the | |
| 5038 | relocation if linking a shared object since they are | |
| 5039 | section relative. */ | |
| 5040 | case R_PPC64_SECTOFF: | |
| 5041 | case R_PPC64_SECTOFF_LO: | |
| 5042 | case R_PPC64_SECTOFF_HI: | |
| 5043 | case R_PPC64_SECTOFF_HA: | |
| 5044 | case R_PPC64_SECTOFF_DS: | |
| 5045 | case R_PPC64_SECTOFF_LO_DS: | |
| 411e1bfb AM |
5046 | case R_PPC64_DTPREL16: |
| 5047 | case R_PPC64_DTPREL16_LO: | |
| 5048 | case R_PPC64_DTPREL16_HI: | |
| 5049 | case R_PPC64_DTPREL16_HA: | |
| 5050 | case R_PPC64_DTPREL16_DS: | |
| 5051 | case R_PPC64_DTPREL16_LO_DS: | |
| 5052 | case R_PPC64_DTPREL16_HIGHER: | |
| 5053 | case R_PPC64_DTPREL16_HIGHERA: | |
| 5054 | case R_PPC64_DTPREL16_HIGHEST: | |
| 5055 | case R_PPC64_DTPREL16_HIGHESTA: | |
| 5bd4f169 AM |
5056 | break; |
| 5057 | ||
| ad8e1ba5 | 5058 | /* Nor do these. */ |
| 25f23106 AM |
5059 | case R_PPC64_REL16: |
| 5060 | case R_PPC64_REL16_LO: | |
| 5061 | case R_PPC64_REL16_HI: | |
| 5062 | case R_PPC64_REL16_HA: | |
| 5063 | break; | |
| 5064 | ||
| ad8e1ba5 AM |
5065 | case R_PPC64_TOC16: |
| 5066 | case R_PPC64_TOC16_LO: | |
| 5067 | case R_PPC64_TOC16_HI: | |
| 5068 | case R_PPC64_TOC16_HA: | |
| 5069 | case R_PPC64_TOC16_DS: | |
| 5070 | case R_PPC64_TOC16_LO_DS: | |
| 4c52953f | 5071 | sec->has_toc_reloc = 1; |
| ad8e1ba5 AM |
5072 | break; |
| 5073 | ||
| 5bd4f169 AM |
5074 | /* This relocation describes the C++ object vtable hierarchy. |
| 5075 | Reconstruct it for later use during GC. */ | |
| 5076 | case R_PPC64_GNU_VTINHERIT: | |
| c152c796 | 5077 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| b34976b6 | 5078 | return FALSE; |
| 5bd4f169 AM |
5079 | break; |
| 5080 | ||
| 5081 | /* This relocation describes which C++ vtable entries are actually | |
| 5082 | used. Record for later use during GC. */ | |
| 5083 | case R_PPC64_GNU_VTENTRY: | |
| d17e0c6e JB |
5084 | BFD_ASSERT (h != NULL); |
| 5085 | if (h != NULL | |
| 5086 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
| b34976b6 | 5087 | return FALSE; |
| 5bd4f169 AM |
5088 | break; |
| 5089 | ||
| 721956f4 AM |
5090 | case R_PPC64_REL14: |
| 5091 | case R_PPC64_REL14_BRTAKEN: | |
| 5092 | case R_PPC64_REL14_BRNTAKEN: | |
| 220c76dd AM |
5093 | { |
| 5094 | asection *dest = NULL; | |
| 5095 | ||
| 5096 | /* Heuristic: If jumping outside our section, chances are | |
| 5097 | we are going to need a stub. */ | |
| 5098 | if (h != NULL) | |
| 5099 | { | |
| 5100 | /* If the sym is weak it may be overridden later, so | |
| 5101 | don't assume we know where a weak sym lives. */ | |
| 5102 | if (h->root.type == bfd_link_hash_defined) | |
| 5103 | dest = h->root.u.def.section; | |
| 5104 | } | |
| 5105 | else | |
| 87d72d41 AM |
5106 | { |
| 5107 | Elf_Internal_Sym *isym; | |
| 5108 | ||
| 5109 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 5110 | abfd, r_symndx); | |
| 5111 | if (isym == NULL) | |
| 5112 | return FALSE; | |
| 5113 | ||
| 5114 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5115 | } | |
| 5116 | ||
| 220c76dd | 5117 | if (dest != sec) |
| 7c8fe5c4 | 5118 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
| 220c76dd | 5119 | } |
| 721956f4 AM |
5120 | /* Fall through. */ |
| 5121 | ||
| 5d1634d7 | 5122 | case R_PPC64_REL24: |
| e054468f | 5123 | if (h != NULL && ifunc == NULL) |
| 5d1634d7 AM |
5124 | { |
| 5125 | /* We may need a .plt entry if the function this reloc | |
| 5126 | refers to is in a shared lib. */ | |
| e054468f | 5127 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
| 411e1bfb | 5128 | return FALSE; |
| e054468f AM |
5129 | h->needs_plt = 1; |
| 5130 | if (h->root.root.string[0] == '.' | |
| 5131 | && h->root.root.string[1] != '\0') | |
| 5132 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 3a71aa26 | 5133 | if (h == tga || h == dottga) |
| 411e1bfb | 5134 | sec->has_tls_reloc = 1; |
| 411e1bfb AM |
5135 | } |
| 5136 | break; | |
| 5137 | ||
| 5138 | case R_PPC64_TPREL64: | |
| 5139 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
| 1d483afe | 5140 | if (!info->executable) |
| 411e1bfb AM |
5141 | info->flags |= DF_STATIC_TLS; |
| 5142 | goto dotlstoc; | |
| 5143 | ||
| 5144 | case R_PPC64_DTPMOD64: | |
| 5145 | if (rel + 1 < rel_end | |
| 5146 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 5147 | && rel[1].r_offset == rel->r_offset + 8) | |
| 951fd09b | 5148 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
| 411e1bfb | 5149 | else |
| 951fd09b | 5150 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5151 | goto dotlstoc; |
| 5152 | ||
| 5153 | case R_PPC64_DTPREL64: | |
| 5154 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
| 5155 | if (rel != relocs | |
| 5156 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
| 5157 | && rel[-1].r_offset == rel->r_offset - 8) | |
| 5158 | /* This is the second reloc of a dtpmod, dtprel pair. | |
| 5159 | Don't mark with TLS_DTPREL. */ | |
| 5160 | goto dodyn; | |
| 5161 | ||
| 5162 | dotlstoc: | |
| 5163 | sec->has_tls_reloc = 1; | |
| 5164 | if (h != NULL) | |
| 5165 | { | |
| 5166 | struct ppc_link_hash_entry *eh; | |
| 5167 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 5168 | eh->tls_mask |= tls_type; |
| 411e1bfb AM |
5169 | } |
| 5170 | else | |
| 5171 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5172 | rel->r_addend, tls_type)) | |
| 5173 | return FALSE; | |
| 5174 | ||
| 7c8fe5c4 AM |
5175 | ppc64_sec = ppc64_elf_section_data (sec); |
| 5176 | if (ppc64_sec->sec_type != sec_toc) | |
| 411e1bfb | 5177 | { |
| 3a71aa26 AM |
5178 | bfd_size_type amt; |
| 5179 | ||
| e7b938ca | 5180 | /* One extra to simplify get_tls_mask. */ |
| 3a71aa26 AM |
5181 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
| 5182 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
| 5183 | if (ppc64_sec->u.toc.symndx == NULL) | |
| 5184 | return FALSE; | |
| 5185 | amt = sec->size * sizeof (bfd_vma) / 8; | |
| 5186 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
| 5187 | if (ppc64_sec->u.toc.add == NULL) | |
| 411e1bfb | 5188 | return FALSE; |
| 7c8fe5c4 AM |
5189 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
| 5190 | ppc64_sec->sec_type = sec_toc; | |
| 411e1bfb AM |
5191 | } |
| 5192 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
| 3a71aa26 AM |
5193 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
| 5194 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
| 951fd09b AM |
5195 | |
| 5196 | /* Mark the second slot of a GD or LD entry. | |
| 5197 | -1 to indicate GD and -2 to indicate LD. */ | |
| 5198 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
| 3a71aa26 | 5199 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
| 951fd09b | 5200 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
| 3a71aa26 | 5201 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
| 411e1bfb AM |
5202 | goto dodyn; |
| 5203 | ||
| 5204 | case R_PPC64_TPREL16: | |
| 5205 | case R_PPC64_TPREL16_LO: | |
| 5206 | case R_PPC64_TPREL16_HI: | |
| 5207 | case R_PPC64_TPREL16_HA: | |
| 5208 | case R_PPC64_TPREL16_DS: | |
| 5209 | case R_PPC64_TPREL16_LO_DS: | |
| 5210 | case R_PPC64_TPREL16_HIGHER: | |
| 5211 | case R_PPC64_TPREL16_HIGHERA: | |
| 5212 | case R_PPC64_TPREL16_HIGHEST: | |
| 5213 | case R_PPC64_TPREL16_HIGHESTA: | |
| 5214 | if (info->shared) | |
| 5215 | { | |
| 1d483afe AM |
5216 | if (!info->executable) |
| 5217 | info->flags |= DF_STATIC_TLS; | |
| 411e1bfb | 5218 | goto dodyn; |
| 5d1634d7 AM |
5219 | } |
| 5220 | break; | |
| 5221 | ||
| e86ce104 | 5222 | case R_PPC64_ADDR64: |
| 1e2f5b6e | 5223 | if (opd_sym_map != NULL |
| 1e2f5b6e | 5224 | && rel + 1 < rel_end |
| 4ce794b7 | 5225 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
| 1e2f5b6e | 5226 | { |
| 8387904d AM |
5227 | if (h != NULL) |
| 5228 | { | |
| 5229 | if (h->root.root.string[0] == '.' | |
| 5230 | && h->root.root.string[1] != 0 | |
| b31867b6 | 5231 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
| 8387904d AM |
5232 | ; |
| 5233 | else | |
| 5234 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 5235 | } | |
| 5236 | else | |
| 5237 | { | |
| 5238 | asection *s; | |
| 87d72d41 | 5239 | Elf_Internal_Sym *isym; |
| 1e2f5b6e | 5240 | |
| 87d72d41 AM |
5241 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5242 | abfd, r_symndx); | |
| 5243 | if (isym == NULL) | |
| 8387904d | 5244 | return FALSE; |
| 87d72d41 AM |
5245 | |
| 5246 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5247 | if (s != NULL && s != sec) | |
| 3f764659 | 5248 | opd_sym_map[rel->r_offset / 8] = s; |
| 8387904d | 5249 | } |
| 1e2f5b6e | 5250 | } |
| e86ce104 AM |
5251 | /* Fall through. */ |
| 5252 | ||
| 04c9666a | 5253 | case R_PPC64_REL30: |
| 5bd4f169 | 5254 | case R_PPC64_REL32: |
| 04c9666a | 5255 | case R_PPC64_REL64: |
| 65f38f15 AM |
5256 | case R_PPC64_ADDR14: |
| 5257 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 5258 | case R_PPC64_ADDR14_BRTAKEN: | |
| 5259 | case R_PPC64_ADDR16: | |
| 5260 | case R_PPC64_ADDR16_DS: | |
| 5261 | case R_PPC64_ADDR16_HA: | |
| 5262 | case R_PPC64_ADDR16_HI: | |
| 5263 | case R_PPC64_ADDR16_HIGHER: | |
| 5264 | case R_PPC64_ADDR16_HIGHERA: | |
| 5265 | case R_PPC64_ADDR16_HIGHEST: | |
| 5266 | case R_PPC64_ADDR16_HIGHESTA: | |
| 5267 | case R_PPC64_ADDR16_LO: | |
| 5268 | case R_PPC64_ADDR16_LO_DS: | |
| 5269 | case R_PPC64_ADDR24: | |
| 65f38f15 | 5270 | case R_PPC64_ADDR32: |
| 65f38f15 AM |
5271 | case R_PPC64_UADDR16: |
| 5272 | case R_PPC64_UADDR32: | |
| 5273 | case R_PPC64_UADDR64: | |
| 5bd4f169 | 5274 | case R_PPC64_TOC: |
| 81848ca0 AM |
5275 | if (h != NULL && !info->shared) |
| 5276 | /* We may need a copy reloc. */ | |
| f5385ebf | 5277 | h->non_got_ref = 1; |
| 81848ca0 | 5278 | |
| 41bd81ab | 5279 | /* Don't propagate .opd relocs. */ |
| 1e2f5b6e | 5280 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
| e86ce104 | 5281 | break; |
| e86ce104 | 5282 | |
| 65f38f15 AM |
5283 | /* If we are creating a shared library, and this is a reloc |
| 5284 | against a global symbol, or a non PC relative reloc | |
| 5285 | against a local symbol, then we need to copy the reloc | |
| 5286 | into the shared library. However, if we are linking with | |
| 5287 | -Bsymbolic, we do not need to copy a reloc against a | |
| 5288 | global symbol which is defined in an object we are | |
| 5289 | including in the link (i.e., DEF_REGULAR is set). At | |
| 5290 | this point we have not seen all the input files, so it is | |
| 5291 | possible that DEF_REGULAR is not set now but will be set | |
| 5292 | later (it is never cleared). In case of a weak definition, | |
| 5293 | DEF_REGULAR may be cleared later by a strong definition in | |
| 5294 | a shared library. We account for that possibility below by | |
| f4656909 | 5295 | storing information in the dyn_relocs field of the hash |
| 65f38f15 AM |
5296 | table entry. A similar situation occurs when creating |
| 5297 | shared libraries and symbol visibility changes render the | |
| 5298 | symbol local. | |
| 5299 | ||
| 5300 | If on the other hand, we are creating an executable, we | |
| 5301 | may need to keep relocations for symbols satisfied by a | |
| 5302 | dynamic library if we manage to avoid copy relocs for the | |
| 5303 | symbol. */ | |
| 411e1bfb | 5304 | dodyn: |
| 65f38f15 | 5305 | if ((info->shared |
| 1d483afe | 5306 | && (must_be_dyn_reloc (info, r_type) |
| 65f38f15 AM |
5307 | || (h != NULL |
| 5308 | && (! info->symbolic | |
| 5309 | || h->root.type == bfd_link_hash_defweak | |
| f5385ebf | 5310 | || !h->def_regular)))) |
| f4656909 AM |
5311 | || (ELIMINATE_COPY_RELOCS |
| 5312 | && !info->shared | |
| 65f38f15 AM |
5313 | && h != NULL |
| 5314 | && (h->root.type == bfd_link_hash_defweak | |
| 25f23106 AM |
5315 | || !h->def_regular)) |
| 5316 | || (!info->shared | |
| 5317 | && ifunc != NULL)) | |
| 5bd4f169 | 5318 | { |
| ec338859 AM |
5319 | struct ppc_dyn_relocs *p; |
| 5320 | struct ppc_dyn_relocs **head; | |
| 5321 | ||
| 65f38f15 AM |
5322 | /* We must copy these reloc types into the output file. |
| 5323 | Create a reloc section in dynobj and make room for | |
| 5324 | this reloc. */ | |
| 5bd4f169 AM |
5325 | if (sreloc == NULL) |
| 5326 | { | |
| 83bac4b0 NC |
5327 | sreloc = _bfd_elf_make_dynamic_reloc_section |
| 5328 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
| 65f38f15 | 5329 | |
| 5bd4f169 | 5330 | if (sreloc == NULL) |
| 83bac4b0 | 5331 | return FALSE; |
| 5bd4f169 AM |
5332 | } |
| 5333 | ||
| 65f38f15 AM |
5334 | /* If this is a global symbol, we count the number of |
| 5335 | relocations we need for this symbol. */ | |
| 5336 | if (h != NULL) | |
| 5337 | { | |
| ec338859 | 5338 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
| 65f38f15 AM |
5339 | } |
| 5340 | else | |
| 5341 | { | |
| ec338859 AM |
5342 | /* Track dynamic relocs needed for local syms too. |
| 5343 | We really need local syms available to do this | |
| 5344 | easily. Oh well. */ | |
| ec338859 | 5345 | asection *s; |
| 6edfbbad | 5346 | void *vpp; |
| 87d72d41 | 5347 | Elf_Internal_Sym *isym; |
| 6edfbbad | 5348 | |
| 87d72d41 AM |
5349 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5350 | abfd, r_symndx); | |
| 5351 | if (isym == NULL) | |
| b34976b6 | 5352 | return FALSE; |
| ec338859 | 5353 | |
| 87d72d41 AM |
5354 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 5355 | if (s == NULL) | |
| 5356 | s = sec; | |
| 5357 | ||
| 6edfbbad DJ |
5358 | vpp = &elf_section_data (s)->local_dynrel; |
| 5359 | head = (struct ppc_dyn_relocs **) vpp; | |
| 65f38f15 | 5360 | } |
| ec338859 AM |
5361 | |
| 5362 | p = *head; | |
| 5363 | if (p == NULL || p->sec != sec) | |
| 5364 | { | |
| 4ce794b7 | 5365 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
| ec338859 | 5366 | if (p == NULL) |
| b34976b6 | 5367 | return FALSE; |
| ec338859 AM |
5368 | p->next = *head; |
| 5369 | *head = p; | |
| 5370 | p->sec = sec; | |
| 5371 | p->count = 0; | |
| 5372 | p->pc_count = 0; | |
| 5373 | } | |
| 5374 | ||
| 5375 | p->count += 1; | |
| 1d483afe | 5376 | if (!must_be_dyn_reloc (info, r_type)) |
| ec338859 | 5377 | p->pc_count += 1; |
| 65f38f15 | 5378 | } |
| 5bd4f169 | 5379 | break; |
| 65f38f15 AM |
5380 | |
| 5381 | default: | |
| 96e0dda4 | 5382 | break; |
| 5bd4f169 AM |
5383 | } |
| 5384 | } | |
| 5385 | ||
| b34976b6 | 5386 | return TRUE; |
| 5bd4f169 AM |
5387 | } |
| 5388 | ||
| 8387904d AM |
5389 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
| 5390 | of the code entry point, and its section. */ | |
| 5391 | ||
| 5392 | static bfd_vma | |
| 5393 | opd_entry_value (asection *opd_sec, | |
| 5394 | bfd_vma offset, | |
| 5395 | asection **code_sec, | |
| 5396 | bfd_vma *code_off) | |
| 5397 | { | |
| 5398 | bfd *opd_bfd = opd_sec->owner; | |
| 8860955f | 5399 | Elf_Internal_Rela *relocs; |
| 8387904d | 5400 | Elf_Internal_Rela *lo, *hi, *look; |
| 645ea6a9 | 5401 | bfd_vma val; |
| 8387904d | 5402 | |
| 4b85d634 AM |
5403 | /* No relocs implies we are linking a --just-symbols object. */ |
| 5404 | if (opd_sec->reloc_count == 0) | |
| 5405 | { | |
| 4b85d634 AM |
5406 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) |
| 5407 | return (bfd_vma) -1; | |
| 3b36f7e6 | 5408 | |
| 4b85d634 AM |
5409 | if (code_sec != NULL) |
| 5410 | { | |
| 5411 | asection *sec, *likely = NULL; | |
| 5412 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
| 5413 | if (sec->vma <= val | |
| 5414 | && (sec->flags & SEC_LOAD) != 0 | |
| 5415 | && (sec->flags & SEC_ALLOC) != 0) | |
| 5416 | likely = sec; | |
| 5417 | if (likely != NULL) | |
| 5418 | { | |
| 5419 | *code_sec = likely; | |
| 5420 | if (code_off != NULL) | |
| 5421 | *code_off = val - likely->vma; | |
| 5422 | } | |
| 5423 | } | |
| 5424 | return val; | |
| 5425 | } | |
| 5426 | ||
| 0c8d6e5c | 5427 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
| 0ffa91dd | 5428 | |
| 8860955f AM |
5429 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
| 5430 | if (relocs == NULL) | |
| 5431 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
| 645ea6a9 | 5432 | |
| 8387904d | 5433 | /* Go find the opd reloc at the sym address. */ |
| 8860955f | 5434 | lo = relocs; |
| 8387904d AM |
5435 | BFD_ASSERT (lo != NULL); |
| 5436 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
| 645ea6a9 | 5437 | val = (bfd_vma) -1; |
| 8387904d AM |
5438 | while (lo < hi) |
| 5439 | { | |
| 5440 | look = lo + (hi - lo) / 2; | |
| 5441 | if (look->r_offset < offset) | |
| 5442 | lo = look + 1; | |
| 5443 | else if (look->r_offset > offset) | |
| 5444 | hi = look; | |
| 5445 | else | |
| 5446 | { | |
| 0ffa91dd NC |
5447 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
| 5448 | ||
| 8387904d AM |
5449 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
| 5450 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
| 5451 | { | |
| 5452 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
| 8387904d AM |
5453 | asection *sec; |
| 5454 | ||
| 5455 | if (symndx < symtab_hdr->sh_info) | |
| 5456 | { | |
| 5457 | Elf_Internal_Sym *sym; | |
| 5458 | ||
| 5459 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 5460 | if (sym == NULL) | |
| 5461 | { | |
| 5462 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
| 5463 | symtab_hdr->sh_info, | |
| 5464 | 0, NULL, NULL, NULL); | |
| 5465 | if (sym == NULL) | |
| 645ea6a9 | 5466 | break; |
| 8387904d AM |
5467 | symtab_hdr->contents = (bfd_byte *) sym; |
| 5468 | } | |
| 5469 | ||
| 5470 | sym += symndx; | |
| 5471 | val = sym->st_value; | |
| cb33740c | 5472 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
| 8387904d AM |
5473 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
| 5474 | } | |
| 5475 | else | |
| 5476 | { | |
| 5477 | struct elf_link_hash_entry **sym_hashes; | |
| 5478 | struct elf_link_hash_entry *rh; | |
| 5479 | ||
| 5480 | sym_hashes = elf_sym_hashes (opd_bfd); | |
| 5481 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 5482 | rh = elf_follow_link (rh); |
| 8387904d AM |
5483 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined |
| 5484 | || rh->root.type == bfd_link_hash_defweak); | |
| 5485 | val = rh->root.u.def.value; | |
| 5486 | sec = rh->root.u.def.section; | |
| 5487 | } | |
| 5488 | val += look->r_addend; | |
| 5489 | if (code_off != NULL) | |
| 5490 | *code_off = val; | |
| 5491 | if (code_sec != NULL) | |
| 5492 | *code_sec = sec; | |
| 5493 | if (sec != NULL && sec->output_section != NULL) | |
| 5494 | val += sec->output_section->vma + sec->output_offset; | |
| 8387904d AM |
5495 | } |
| 5496 | break; | |
| 5497 | } | |
| 5498 | } | |
| 645ea6a9 | 5499 | |
| 645ea6a9 | 5500 | return val; |
| 8387904d AM |
5501 | } |
| 5502 | ||
| b31867b6 AM |
5503 | /* If FDH is a function descriptor symbol, return the associated code |
| 5504 | entry symbol if it is defined. Return NULL otherwise. */ | |
| 5505 | ||
| 5506 | static struct ppc_link_hash_entry * | |
| 5507 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
| 5508 | { | |
| 5509 | if (fdh->is_func_descriptor) | |
| 5510 | { | |
| 5511 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
| 5512 | if (fh->elf.root.type == bfd_link_hash_defined | |
| 5513 | || fh->elf.root.type == bfd_link_hash_defweak) | |
| 5514 | return fh; | |
| 5515 | } | |
| 5516 | return NULL; | |
| 5517 | } | |
| 5518 | ||
| 5519 | /* If FH is a function code entry symbol, return the associated | |
| 5520 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
| 5521 | ||
| 5522 | static struct ppc_link_hash_entry * | |
| 5523 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
| 5524 | { | |
| 5525 | if (fh->oh != NULL | |
| 5526 | && fh->oh->is_func_descriptor) | |
| 5527 | { | |
| 5528 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
| 5529 | if (fdh->elf.root.type == bfd_link_hash_defined | |
| 5530 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 5531 | return fdh; | |
| 5532 | } | |
| 5533 | return NULL; | |
| 5534 | } | |
| 5535 | ||
| 74f0fb50 AM |
5536 | /* Mark all our entry sym sections, both opd and code section. */ |
| 5537 | ||
| 5538 | static void | |
| 5539 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
| 5540 | { | |
| 5541 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 5542 | struct bfd_sym_chain *sym; | |
| 5543 | ||
| 5544 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) | |
| 5545 | { | |
| b31867b6 | 5546 | struct ppc_link_hash_entry *eh, *fh; |
| 74f0fb50 AM |
5547 | asection *sec; |
| 5548 | ||
| 5549 | eh = (struct ppc_link_hash_entry *) | |
| b31867b6 | 5550 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
| 74f0fb50 AM |
5551 | if (eh == NULL) |
| 5552 | continue; | |
| 5553 | if (eh->elf.root.type != bfd_link_hash_defined | |
| 5554 | && eh->elf.root.type != bfd_link_hash_defweak) | |
| 5555 | continue; | |
| 5556 | ||
| b31867b6 AM |
5557 | fh = defined_code_entry (eh); |
| 5558 | if (fh != NULL) | |
| 74f0fb50 | 5559 | { |
| b31867b6 | 5560 | sec = fh->elf.root.u.def.section; |
| 74f0fb50 AM |
5561 | sec->flags |= SEC_KEEP; |
| 5562 | } | |
| 5563 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
| 5564 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 5565 | eh->elf.root.u.def.value, | |
| 5566 | &sec, NULL) != (bfd_vma) -1) | |
| 5567 | sec->flags |= SEC_KEEP; | |
| 5568 | ||
| 5569 | sec = eh->elf.root.u.def.section; | |
| 5570 | sec->flags |= SEC_KEEP; | |
| 5571 | } | |
| 5572 | } | |
| 5573 | ||
| 64d03ab5 AM |
5574 | /* Mark sections containing dynamically referenced symbols. When |
| 5575 | building shared libraries, we must assume that any visible symbol is | |
| 5576 | referenced. */ | |
| 5577 | ||
| 5578 | static bfd_boolean | |
| 5579 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
| 5580 | { | |
| 5581 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
| 5582 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
| b31867b6 | 5583 | struct ppc_link_hash_entry *fdh; |
| 64d03ab5 AM |
5584 | |
| 5585 | if (eh->elf.root.type == bfd_link_hash_warning) | |
| 5586 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
| 5587 | ||
| 5588 | /* Dynamic linking info is on the func descriptor sym. */ | |
| b31867b6 AM |
5589 | fdh = defined_func_desc (eh); |
| 5590 | if (fdh != NULL) | |
| 5591 | eh = fdh; | |
| 64d03ab5 AM |
5592 | |
| 5593 | if ((eh->elf.root.type == bfd_link_hash_defined | |
| 5594 | || eh->elf.root.type == bfd_link_hash_defweak) | |
| 5595 | && (eh->elf.ref_dynamic | |
| 5596 | || (!info->executable | |
| 5597 | && eh->elf.def_regular | |
| 5598 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
| 5599 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
| 5600 | { | |
| 5601 | asection *code_sec; | |
| b31867b6 | 5602 | struct ppc_link_hash_entry *fh; |
| 64d03ab5 AM |
5603 | |
| 5604 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
| 5605 | ||
| 5606 | /* Function descriptor syms cause the associated | |
| 5607 | function code sym section to be marked. */ | |
| b31867b6 AM |
5608 | fh = defined_code_entry (eh); |
| 5609 | if (fh != NULL) | |
| 5610 | { | |
| 5611 | code_sec = fh->elf.root.u.def.section; | |
| 5612 | code_sec->flags |= SEC_KEEP; | |
| 5613 | } | |
| 64d03ab5 AM |
5614 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 5615 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 5616 | eh->elf.root.u.def.value, | |
| 5617 | &code_sec, NULL) != (bfd_vma) -1) | |
| 5618 | code_sec->flags |= SEC_KEEP; | |
| 5619 | } | |
| 5620 | ||
| 5621 | return TRUE; | |
| 5622 | } | |
| 5623 | ||
| 5bd4f169 AM |
5624 | /* Return the section that should be marked against GC for a given |
| 5625 | relocation. */ | |
| 5626 | ||
| 5627 | static asection * | |
| 4ce794b7 | 5628 | ppc64_elf_gc_mark_hook (asection *sec, |
| fb34365b | 5629 | struct bfd_link_info *info, |
| 4ce794b7 AM |
5630 | Elf_Internal_Rela *rel, |
| 5631 | struct elf_link_hash_entry *h, | |
| 5632 | Elf_Internal_Sym *sym) | |
| 5bd4f169 | 5633 | { |
| ccfa59ea AM |
5634 | asection *rsec; |
| 5635 | ||
| ccfa59ea AM |
5636 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
| 5637 | function sections, as all functions are referenced in .opd. */ | |
| 5638 | rsec = NULL; | |
| 5639 | if (get_opd_info (sec) != NULL) | |
| 5640 | return rsec; | |
| 1e2f5b6e | 5641 | |
| 5bd4f169 AM |
5642 | if (h != NULL) |
| 5643 | { | |
| 04c9666a | 5644 | enum elf_ppc64_reloc_type r_type; |
| b31867b6 | 5645 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
| a33d1f77 | 5646 | |
| 4ce794b7 | 5647 | r_type = ELF64_R_TYPE (rel->r_info); |
| a33d1f77 | 5648 | switch (r_type) |
| 5bd4f169 AM |
5649 | { |
| 5650 | case R_PPC64_GNU_VTINHERIT: | |
| 5651 | case R_PPC64_GNU_VTENTRY: | |
| 5652 | break; | |
| 5653 | ||
| 5654 | default: | |
| 5655 | switch (h->root.type) | |
| 5656 | { | |
| 5657 | case bfd_link_hash_defined: | |
| 5658 | case bfd_link_hash_defweak: | |
| ccfa59ea | 5659 | eh = (struct ppc_link_hash_entry *) h; |
| b31867b6 AM |
5660 | fdh = defined_func_desc (eh); |
| 5661 | if (fdh != NULL) | |
| 5662 | eh = fdh; | |
| 1e2f5b6e AM |
5663 | |
| 5664 | /* Function descriptor syms cause the associated | |
| 5665 | function code sym section to be marked. */ | |
| b31867b6 AM |
5666 | fh = defined_code_entry (eh); |
| 5667 | if (fh != NULL) | |
| ccfa59ea AM |
5668 | { |
| 5669 | /* They also mark their opd section. */ | |
| 74f0fb50 | 5670 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 5671 | |
| b31867b6 | 5672 | rsec = fh->elf.root.u.def.section; |
| ccfa59ea | 5673 | } |
| 8387904d AM |
5674 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 5675 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 5676 | eh->elf.root.u.def.value, | |
| 5677 | &rsec, NULL) != (bfd_vma) -1) | |
| 74f0fb50 | 5678 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 5679 | else |
| 1e2f5b6e AM |
5680 | rsec = h->root.u.def.section; |
| 5681 | break; | |
| 5bd4f169 AM |
5682 | |
| 5683 | case bfd_link_hash_common: | |
| 1e2f5b6e AM |
5684 | rsec = h->root.u.c.p->section; |
| 5685 | break; | |
| 5bd4f169 AM |
5686 | |
| 5687 | default: | |
| fb34365b | 5688 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 5bd4f169 AM |
5689 | } |
| 5690 | } | |
| 5691 | } | |
| 5692 | else | |
| 5693 | { | |
| 74f0fb50 | 5694 | struct _opd_sec_data *opd; |
| 1e2f5b6e AM |
5695 | |
| 5696 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
| 74f0fb50 AM |
5697 | opd = get_opd_info (rsec); |
| 5698 | if (opd != NULL && opd->func_sec != NULL) | |
| ccfa59ea | 5699 | { |
| 74f0fb50 | 5700 | rsec->gc_mark = 1; |
| ccfa59ea | 5701 | |
| 74f0fb50 | 5702 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
| ccfa59ea | 5703 | } |
| 5bd4f169 AM |
5704 | } |
| 5705 | ||
| 1e2f5b6e | 5706 | return rsec; |
| 5bd4f169 AM |
5707 | } |
| 5708 | ||
| 65f38f15 AM |
5709 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
| 5710 | section being removed. */ | |
| 5bd4f169 | 5711 | |
| b34976b6 | 5712 | static bfd_boolean |
| 4ce794b7 AM |
5713 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
| 5714 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 5715 | { |
| 411e1bfb | 5716 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
5717 | Elf_Internal_Shdr *symtab_hdr; |
| 5718 | struct elf_link_hash_entry **sym_hashes; | |
| 411e1bfb | 5719 | struct got_entry **local_got_ents; |
| 5bd4f169 | 5720 | const Elf_Internal_Rela *rel, *relend; |
| 5bd4f169 | 5721 | |
| 7dda2462 TG |
5722 | if (info->relocatable) |
| 5723 | return TRUE; | |
| 5724 | ||
| 680a3378 AM |
5725 | if ((sec->flags & SEC_ALLOC) == 0) |
| 5726 | return TRUE; | |
| 5727 | ||
| ec338859 AM |
5728 | elf_section_data (sec)->local_dynrel = NULL; |
| 5729 | ||
| 411e1bfb | 5730 | htab = ppc_hash_table (info); |
| 0ffa91dd | 5731 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 | 5732 | sym_hashes = elf_sym_hashes (abfd); |
| 411e1bfb | 5733 | local_got_ents = elf_local_got_ents (abfd); |
| 5bd4f169 AM |
5734 | |
| 5735 | relend = relocs + sec->reloc_count; | |
| 5736 | for (rel = relocs; rel < relend; rel++) | |
| a33d1f77 AM |
5737 | { |
| 5738 | unsigned long r_symndx; | |
| 04c9666a | 5739 | enum elf_ppc64_reloc_type r_type; |
| 58ac9f71 | 5740 | struct elf_link_hash_entry *h = NULL; |
| 411e1bfb | 5741 | char tls_type = 0; |
| 5bd4f169 | 5742 | |
| a33d1f77 | 5743 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 4ce794b7 | 5744 | r_type = ELF64_R_TYPE (rel->r_info); |
| 58ac9f71 AM |
5745 | if (r_symndx >= symtab_hdr->sh_info) |
| 5746 | { | |
| 5747 | struct ppc_link_hash_entry *eh; | |
| 5748 | struct ppc_dyn_relocs **pp; | |
| 5749 | struct ppc_dyn_relocs *p; | |
| 5750 | ||
| 5751 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 5752 | h = elf_follow_link (h); |
| 58ac9f71 AM |
5753 | eh = (struct ppc_link_hash_entry *) h; |
| 5754 | ||
| 5755 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
| 5756 | if (p->sec == sec) | |
| 5757 | { | |
| 5758 | /* Everything must go for SEC. */ | |
| 5759 | *pp = p->next; | |
| 5760 | break; | |
| 5761 | } | |
| 5762 | } | |
| 5763 | ||
| e054468f AM |
5764 | if (is_branch_reloc (r_type)) |
| 5765 | { | |
| 5766 | struct plt_entry **ifunc = NULL; | |
| 5767 | if (h != NULL) | |
| 5768 | { | |
| 5769 | if (h->type == STT_GNU_IFUNC) | |
| 5770 | ifunc = &h->plt.plist; | |
| 5771 | } | |
| 5772 | else if (local_got_ents != NULL) | |
| 5773 | { | |
| 5774 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 5775 | (local_got_ents + symtab_hdr->sh_info); | |
| 5776 | char *local_got_tls_masks = (char *) | |
| 5777 | (local_plt + symtab_hdr->sh_info); | |
| 5778 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
| 5779 | ifunc = local_plt + r_symndx; | |
| 5780 | } | |
| 5781 | if (ifunc != NULL) | |
| 5782 | { | |
| 5783 | struct plt_entry *ent; | |
| 5784 | ||
| 5785 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
| 5786 | if (ent->addend == rel->r_addend) | |
| 5787 | break; | |
| 5788 | if (ent == NULL) | |
| 5789 | abort (); | |
| 5790 | if (ent->plt.refcount > 0) | |
| 5791 | ent->plt.refcount -= 1; | |
| 5792 | continue; | |
| 5793 | } | |
| 5794 | } | |
| 5795 | ||
| a33d1f77 AM |
5796 | switch (r_type) |
| 5797 | { | |
| 411e1bfb AM |
5798 | case R_PPC64_GOT_TLSLD16: |
| 5799 | case R_PPC64_GOT_TLSLD16_LO: | |
| 5800 | case R_PPC64_GOT_TLSLD16_HI: | |
| 5801 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 5802 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5803 | goto dogot; |
| 5804 | ||
| 5805 | case R_PPC64_GOT_TLSGD16: | |
| 5806 | case R_PPC64_GOT_TLSGD16_LO: | |
| 5807 | case R_PPC64_GOT_TLSGD16_HI: | |
| 5808 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 5809 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
5810 | goto dogot; |
| 5811 | ||
| 5812 | case R_PPC64_GOT_TPREL16_DS: | |
| 5813 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 5814 | case R_PPC64_GOT_TPREL16_HI: | |
| 5815 | case R_PPC64_GOT_TPREL16_HA: | |
| 5816 | tls_type = TLS_TLS | TLS_TPREL; | |
| 5817 | goto dogot; | |
| 5818 | ||
| 5819 | case R_PPC64_GOT_DTPREL16_DS: | |
| 5820 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 5821 | case R_PPC64_GOT_DTPREL16_HI: | |
| 5822 | case R_PPC64_GOT_DTPREL16_HA: | |
| 5823 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 5824 | goto dogot; | |
| 5825 | ||
| a33d1f77 AM |
5826 | case R_PPC64_GOT16: |
| 5827 | case R_PPC64_GOT16_DS: | |
| 5828 | case R_PPC64_GOT16_HA: | |
| 5829 | case R_PPC64_GOT16_HI: | |
| 5830 | case R_PPC64_GOT16_LO: | |
| 5831 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb AM |
5832 | dogot: |
| 5833 | { | |
| 5834 | struct got_entry *ent; | |
| 5835 | ||
| 58ac9f71 AM |
5836 | if (h != NULL) |
| 5837 | ent = h->got.glist; | |
| 411e1bfb AM |
5838 | else |
| 5839 | ent = local_got_ents[r_symndx]; | |
| 5840 | ||
| 5841 | for (; ent != NULL; ent = ent->next) | |
| 5842 | if (ent->addend == rel->r_addend | |
| e717da7e | 5843 | && ent->owner == abfd |
| 411e1bfb AM |
5844 | && ent->tls_type == tls_type) |
| 5845 | break; | |
| 5846 | if (ent == NULL) | |
| 5847 | abort (); | |
| 5848 | if (ent->got.refcount > 0) | |
| 5849 | ent->got.refcount -= 1; | |
| 5850 | } | |
| a33d1f77 | 5851 | break; |
| 65f38f15 | 5852 | |
| a33d1f77 AM |
5853 | case R_PPC64_PLT16_HA: |
| 5854 | case R_PPC64_PLT16_HI: | |
| 5855 | case R_PPC64_PLT16_LO: | |
| 5856 | case R_PPC64_PLT32: | |
| 5857 | case R_PPC64_PLT64: | |
| 721956f4 AM |
5858 | case R_PPC64_REL14: |
| 5859 | case R_PPC64_REL14_BRNTAKEN: | |
| 5860 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 | 5861 | case R_PPC64_REL24: |
| 58ac9f71 | 5862 | if (h != NULL) |
| 5d1634d7 | 5863 | { |
| 411e1bfb AM |
5864 | struct plt_entry *ent; |
| 5865 | ||
| 411e1bfb AM |
5866 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
| 5867 | if (ent->addend == rel->r_addend) | |
| 5868 | break; | |
| 7c6c1722 | 5869 | if (ent != NULL && ent->plt.refcount > 0) |
| 411e1bfb | 5870 | ent->plt.refcount -= 1; |
| 5d1634d7 | 5871 | } |
| e86ce104 | 5872 | break; |
| 5d1634d7 | 5873 | |
| a33d1f77 AM |
5874 | default: |
| 5875 | break; | |
| 5876 | } | |
| 5877 | } | |
| b34976b6 | 5878 | return TRUE; |
| 5bd4f169 AM |
5879 | } |
| 5880 | ||
| deb0e272 AM |
5881 | /* The maximum size of .sfpr. */ |
| 5882 | #define SFPR_MAX (218*4) | |
| 5883 | ||
| 5884 | struct sfpr_def_parms | |
| 5885 | { | |
| 699733f6 AM |
5886 | const char name[12]; |
| 5887 | unsigned char lo, hi; | |
| deb0e272 AM |
5888 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
| 5889 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
| 5890 | }; | |
| 5891 | ||
| 5892 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
| 5893 | ||
| 5894 | static unsigned int | |
| 5895 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
| 5896 | { | |
| 5897 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 5898 | unsigned int i; | |
| 5899 | size_t len = strlen (parm->name); | |
| 5900 | bfd_boolean writing = FALSE; | |
| 699733f6 | 5901 | char sym[16]; |
| deb0e272 AM |
5902 | |
| 5903 | memcpy (sym, parm->name, len); | |
| 5904 | sym[len + 2] = 0; | |
| 5905 | ||
| 5906 | for (i = parm->lo; i <= parm->hi; i++) | |
| 5907 | { | |
| 5908 | struct elf_link_hash_entry *h; | |
| 5909 | ||
| 5910 | sym[len + 0] = i / 10 + '0'; | |
| 5911 | sym[len + 1] = i % 10 + '0'; | |
| 5912 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
| 5913 | if (h != NULL | |
| f5385ebf | 5914 | && !h->def_regular) |
| deb0e272 AM |
5915 | { |
| 5916 | h->root.type = bfd_link_hash_defined; | |
| 5917 | h->root.u.def.section = htab->sfpr; | |
| 5918 | h->root.u.def.value = htab->sfpr->size; | |
| 5919 | h->type = STT_FUNC; | |
| f5385ebf | 5920 | h->def_regular = 1; |
| deb0e272 AM |
5921 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
| 5922 | writing = TRUE; | |
| 5923 | if (htab->sfpr->contents == NULL) | |
| 5924 | { | |
| 5925 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
| 5926 | if (htab->sfpr->contents == NULL) | |
| 5927 | return FALSE; | |
| 5928 | } | |
| 5929 | } | |
| 5930 | if (writing) | |
| 5931 | { | |
| 5932 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
| 5933 | if (i != parm->hi) | |
| 5934 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
| 5935 | else | |
| 5936 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
| 5937 | htab->sfpr->size = p - htab->sfpr->contents; | |
| 5938 | } | |
| 5939 | } | |
| 5940 | ||
| 5941 | return TRUE; | |
| 5942 | } | |
| 5943 | ||
| 5944 | static bfd_byte * | |
| 5945 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 5946 | { | |
| 5947 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 5948 | return p + 4; | |
| 5949 | } | |
| 5950 | ||
| 5951 | static bfd_byte * | |
| 5952 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5953 | { | |
| 5954 | p = savegpr0 (abfd, p, r); | |
| 5955 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
| 5956 | p = p + 4; | |
| 5957 | bfd_put_32 (abfd, BLR, p); | |
| 5958 | return p + 4; | |
| 5959 | } | |
| 5960 | ||
| 5961 | static bfd_byte * | |
| 5962 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 5963 | { | |
| 5964 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 5965 | return p + 4; | |
| 5966 | } | |
| 5967 | ||
| 5968 | static bfd_byte * | |
| 5969 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5970 | { | |
| 5971 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
| 5972 | p = p + 4; | |
| 5973 | p = restgpr0 (abfd, p, r); | |
| 5974 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 5975 | p = p + 4; | |
| 5976 | if (r == 29) | |
| 5977 | { | |
| 5978 | p = restgpr0 (abfd, p, 30); | |
| 5979 | p = restgpr0 (abfd, p, 31); | |
| 5980 | } | |
| 5981 | bfd_put_32 (abfd, BLR, p); | |
| 5982 | return p + 4; | |
| 5983 | } | |
| 5984 | ||
| 5985 | static bfd_byte * | |
| 5986 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 5987 | { | |
| 5988 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 5989 | return p + 4; | |
| 5990 | } | |
| 5991 | ||
| 5992 | static bfd_byte * | |
| 5993 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5994 | { | |
| 5995 | p = savegpr1 (abfd, p, r); | |
| 5996 | bfd_put_32 (abfd, BLR, p); | |
| 5997 | return p + 4; | |
| 5998 | } | |
| 5999 | ||
| 6000 | static bfd_byte * | |
| 6001 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 6002 | { | |
| 6003 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6004 | return p + 4; | |
| 6005 | } | |
| 6006 | ||
| 6007 | static bfd_byte * | |
| 6008 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6009 | { | |
| 6010 | p = restgpr1 (abfd, p, r); | |
| 6011 | bfd_put_32 (abfd, BLR, p); | |
| 6012 | return p + 4; | |
| 6013 | } | |
| 6014 | ||
| 6015 | static bfd_byte * | |
| 6016 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
| 6017 | { | |
| 6018 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6019 | return p + 4; | |
| 6020 | } | |
| 6021 | ||
| 6022 | static bfd_byte * | |
| 6023 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6024 | { | |
| 6025 | p = savefpr (abfd, p, r); | |
| 6026 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
| 6027 | p = p + 4; | |
| 6028 | bfd_put_32 (abfd, BLR, p); | |
| 6029 | return p + 4; | |
| 6030 | } | |
| 6031 | ||
| 6032 | static bfd_byte * | |
| 6033 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
| 6034 | { | |
| 6035 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6036 | return p + 4; | |
| 6037 | } | |
| 6038 | ||
| 6039 | static bfd_byte * | |
| 6040 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6041 | { | |
| 6042 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
| 6043 | p = p + 4; | |
| 6044 | p = restfpr (abfd, p, r); | |
| 6045 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 6046 | p = p + 4; | |
| 6047 | if (r == 29) | |
| 6048 | { | |
| 6049 | p = restfpr (abfd, p, 30); | |
| 6050 | p = restfpr (abfd, p, 31); | |
| 6051 | } | |
| 6052 | bfd_put_32 (abfd, BLR, p); | |
| 6053 | return p + 4; | |
| 6054 | } | |
| 6055 | ||
| 6056 | static bfd_byte * | |
| 6057 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6058 | { | |
| 6059 | p = savefpr (abfd, p, r); | |
| 6060 | bfd_put_32 (abfd, BLR, p); | |
| 6061 | return p + 4; | |
| 6062 | } | |
| 6063 | ||
| 6064 | static bfd_byte * | |
| 6065 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6066 | { | |
| 6067 | p = restfpr (abfd, p, r); | |
| 6068 | bfd_put_32 (abfd, BLR, p); | |
| 6069 | return p + 4; | |
| 6070 | } | |
| 6071 | ||
| 6072 | static bfd_byte * | |
| 6073 | savevr (bfd *abfd, bfd_byte *p, int r) | |
| 6074 | { | |
| 6075 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 6076 | p = p + 4; | |
| 6077 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
| 6078 | return p + 4; | |
| 6079 | } | |
| 6080 | ||
| 6081 | static bfd_byte * | |
| 6082 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6083 | { | |
| 6084 | p = savevr (abfd, p, r); | |
| 6085 | bfd_put_32 (abfd, BLR, p); | |
| 6086 | return p + 4; | |
| 6087 | } | |
| 6088 | ||
| 6089 | static bfd_byte * | |
| 6090 | restvr (bfd *abfd, bfd_byte *p, int r) | |
| 6091 | { | |
| 6092 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 6093 | p = p + 4; | |
| 6094 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
| 6095 | return p + 4; | |
| 6096 | } | |
| 6097 | ||
| 6098 | static bfd_byte * | |
| 6099 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6100 | { | |
| 6101 | p = restvr (abfd, p, r); | |
| 6102 | bfd_put_32 (abfd, BLR, p); | |
| 6103 | return p + 4; | |
| 6104 | } | |
| 6105 | ||
| e86ce104 AM |
6106 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
| 6107 | information on function code symbol entries to their corresponding | |
| 6108 | function descriptor symbol entries. */ | |
| deb0e272 | 6109 | |
| b34976b6 | 6110 | static bfd_boolean |
| 4ce794b7 | 6111 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 6112 | { |
| e86ce104 | 6113 | struct bfd_link_info *info; |
| 65f38f15 | 6114 | struct ppc_link_hash_table *htab; |
| 411e1bfb | 6115 | struct plt_entry *ent; |
| 50bc7936 AM |
6116 | struct ppc_link_hash_entry *fh; |
| 6117 | struct ppc_link_hash_entry *fdh; | |
| 6118 | bfd_boolean force_local; | |
| 5bd4f169 | 6119 | |
| 50bc7936 AM |
6120 | fh = (struct ppc_link_hash_entry *) h; |
| 6121 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
| b34976b6 | 6122 | return TRUE; |
| e86ce104 | 6123 | |
| 50bc7936 AM |
6124 | if (fh->elf.root.type == bfd_link_hash_warning) |
| 6125 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
| e92d460e | 6126 | |
| 4ce794b7 | 6127 | info = inf; |
| 65f38f15 | 6128 | htab = ppc_hash_table (info); |
| 5bd4f169 | 6129 | |
| c09bdfe5 AM |
6130 | /* Resolve undefined references to dot-symbols as the value |
| 6131 | in the function descriptor, if we have one in a regular object. | |
| 6132 | This is to satisfy cases like ".quad .foo". Calls to functions | |
| 6133 | in dynamic objects are handled elsewhere. */ | |
| 6134 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
| 6135 | && fh->was_undefined | |
| b31867b6 AM |
6136 | && (fdh = defined_func_desc (fh)) != NULL |
| 6137 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
| 6138 | && opd_entry_value (fdh->elf.root.u.def.section, | |
| 6139 | fdh->elf.root.u.def.value, | |
| c09bdfe5 AM |
6140 | &fh->elf.root.u.def.section, |
| 6141 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
| 6142 | { | |
| b31867b6 | 6143 | fh->elf.root.type = fdh->elf.root.type; |
| f5385ebf | 6144 | fh->elf.forced_local = 1; |
| b31867b6 AM |
6145 | fh->elf.def_regular = fdh->elf.def_regular; |
| 6146 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
| c09bdfe5 AM |
6147 | } |
| 6148 | ||
| e86ce104 AM |
6149 | /* If this is a function code symbol, transfer dynamic linking |
| 6150 | information to the function descriptor symbol. */ | |
| 50bc7936 | 6151 | if (!fh->is_func) |
| b34976b6 | 6152 | return TRUE; |
| e86ce104 | 6153 | |
| 50bc7936 | 6154 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
6155 | if (ent->plt.refcount > 0) |
| 6156 | break; | |
| 50bc7936 AM |
6157 | if (ent == NULL |
| 6158 | || fh->elf.root.root.string[0] != '.' | |
| 6159 | || fh->elf.root.root.string[1] == '\0') | |
| 6160 | return TRUE; | |
| 5bd4f169 | 6161 | |
| 50bc7936 AM |
6162 | /* Find the corresponding function descriptor symbol. Create it |
| 6163 | as undefined if necessary. */ | |
| 5bd4f169 | 6164 | |
| b31867b6 | 6165 | fdh = lookup_fdh (fh, htab); |
| 50bc7936 | 6166 | if (fdh == NULL |
| df131623 | 6167 | && !info->executable |
| 50bc7936 AM |
6168 | && (fh->elf.root.type == bfd_link_hash_undefined |
| 6169 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
| 6170 | { | |
| 908b32fc | 6171 | fdh = make_fdh (info, fh); |
| bb700d78 AM |
6172 | if (fdh == NULL) |
| 6173 | return FALSE; | |
| 50bc7936 | 6174 | } |
| 648cca2c | 6175 | |
| 908b32fc | 6176 | /* Fake function descriptors are made undefweak. If the function |
| 433817dd AM |
6177 | code symbol is strong undefined, make the fake sym the same. |
| 6178 | If the function code symbol is defined, then force the fake | |
| 6179 | descriptor local; We can't support overriding of symbols in a | |
| 6180 | shared library on a fake descriptor. */ | |
| 908b32fc AM |
6181 | |
| 6182 | if (fdh != NULL | |
| 6183 | && fdh->fake | |
| 433817dd | 6184 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
| 908b32fc | 6185 | { |
| 433817dd AM |
6186 | if (fh->elf.root.type == bfd_link_hash_undefined) |
| 6187 | { | |
| 6188 | fdh->elf.root.type = bfd_link_hash_undefined; | |
| 6189 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
| 6190 | } | |
| 6191 | else if (fh->elf.root.type == bfd_link_hash_defined | |
| 6192 | || fh->elf.root.type == bfd_link_hash_defweak) | |
| 6193 | { | |
| 6194 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
| 6195 | } | |
| 908b32fc AM |
6196 | } |
| 6197 | ||
| 50bc7936 | 6198 | if (fdh != NULL |
| f5385ebf | 6199 | && !fdh->elf.forced_local |
| df131623 | 6200 | && (!info->executable |
| f5385ebf AM |
6201 | || fdh->elf.def_dynamic |
| 6202 | || fdh->elf.ref_dynamic | |
| 50bc7936 AM |
6203 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
| 6204 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
| 6205 | { | |
| 6206 | if (fdh->elf.dynindx == -1) | |
| c152c796 | 6207 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
| 50bc7936 | 6208 | return FALSE; |
| f5385ebf AM |
6209 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
| 6210 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
| 6211 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
| 6212 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
| 50bc7936 | 6213 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
| e86ce104 | 6214 | { |
| 40d16e0b | 6215 | move_plt_plist (fh, fdh); |
| f5385ebf | 6216 | fdh->elf.needs_plt = 1; |
| e86ce104 | 6217 | } |
| 50bc7936 | 6218 | fdh->is_func_descriptor = 1; |
| 34814b9f AM |
6219 | fdh->oh = fh; |
| 6220 | fh->oh = fdh; | |
| e86ce104 AM |
6221 | } |
| 6222 | ||
| 50bc7936 AM |
6223 | /* Now that the info is on the function descriptor, clear the |
| 6224 | function code sym info. Any function code syms for which we | |
| 6225 | don't have a definition in a regular file, we force local. | |
| 6226 | This prevents a shared library from exporting syms that have | |
| 6227 | been imported from another library. Function code syms that | |
| 6228 | are really in the library we must leave global to prevent the | |
| 6229 | linker dragging in a definition from a static library. */ | |
| 93f3fa99 AM |
6230 | force_local = (!fh->elf.def_regular |
| 6231 | || fdh == NULL | |
| 6232 | || !fdh->elf.def_regular | |
| 6233 | || fdh->elf.forced_local); | |
| 50bc7936 AM |
6234 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| 6235 | ||
| b34976b6 | 6236 | return TRUE; |
| e86ce104 | 6237 | } |
| 40b8271b | 6238 | |
| e86ce104 | 6239 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
| 82bd7b59 AM |
6240 | this hook to a) provide some gcc support functions, and b) transfer |
| 6241 | dynamic linking information gathered so far on function code symbol | |
| 6242 | entries, to their corresponding function descriptor symbol entries. */ | |
| deb0e272 | 6243 | |
| b34976b6 | 6244 | static bfd_boolean |
| 4ce794b7 AM |
6245 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
| 6246 | struct bfd_link_info *info) | |
| e86ce104 AM |
6247 | { |
| 6248 | struct ppc_link_hash_table *htab; | |
| 82bd7b59 | 6249 | unsigned int i; |
| deb0e272 AM |
6250 | const struct sfpr_def_parms funcs[] = |
| 6251 | { | |
| 6252 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
| 6253 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
| 6254 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
| 6255 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
| 6256 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
| 6257 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
| 6258 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
| 6259 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
| 6260 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
| 6261 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
| 6262 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
| 6263 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
| 6264 | }; | |
| e86ce104 AM |
6265 | |
| 6266 | htab = ppc_hash_table (info); | |
| 82bd7b59 AM |
6267 | if (htab->sfpr == NULL) |
| 6268 | /* We don't have any relocs. */ | |
| b34976b6 | 6269 | return TRUE; |
| 82bd7b59 | 6270 | |
| deb0e272 AM |
6271 | /* Provide any missing _save* and _rest* functions. */ |
| 6272 | htab->sfpr->size = 0; | |
| 6273 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
| 6274 | if (!sfpr_define (info, &funcs[i])) | |
| 6275 | return FALSE; | |
| 82bd7b59 | 6276 | |
| 4ce794b7 | 6277 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
| 805fc799 | 6278 | |
| eea6121a | 6279 | if (htab->sfpr->size == 0) |
| 8423293d | 6280 | htab->sfpr->flags |= SEC_EXCLUDE; |
| 82bd7b59 | 6281 | |
| b34976b6 | 6282 | return TRUE; |
| e86ce104 AM |
6283 | } |
| 6284 | ||
| 6285 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
| 6286 | regular object. The current definition is in some section of the | |
| 6287 | dynamic object, but we're not including those sections. We have to | |
| 6288 | change the definition to something the rest of the link can | |
| 6289 | understand. */ | |
| 6290 | ||
| b34976b6 | 6291 | static bfd_boolean |
| 4ce794b7 AM |
6292 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 6293 | struct elf_link_hash_entry *h) | |
| e86ce104 AM |
6294 | { |
| 6295 | struct ppc_link_hash_table *htab; | |
| e86ce104 | 6296 | asection *s; |
| e86ce104 AM |
6297 | |
| 6298 | htab = ppc_hash_table (info); | |
| 6299 | ||
| 6300 | /* Deal with function syms. */ | |
| 6301 | if (h->type == STT_FUNC | |
| e054468f | 6302 | || h->type == STT_GNU_IFUNC |
| f5385ebf | 6303 | || h->needs_plt) |
| e86ce104 AM |
6304 | { |
| 6305 | /* Clear procedure linkage table information for any symbol that | |
| 6306 | won't need a .plt entry. */ | |
| 411e1bfb AM |
6307 | struct plt_entry *ent; |
| 6308 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
| 6309 | if (ent->plt.refcount > 0) | |
| 6310 | break; | |
| 8387904d | 6311 | if (ent == NULL |
| e054468f AM |
6312 | || (h->type != STT_GNU_IFUNC |
| 6313 | && (SYMBOL_CALLS_LOCAL (info, h) | |
| 6314 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
| 6315 | && h->root.type == bfd_link_hash_undefweak)))) | |
| 40b8271b | 6316 | { |
| 411e1bfb | 6317 | h->plt.plist = NULL; |
| f5385ebf | 6318 | h->needs_plt = 0; |
| 40b8271b | 6319 | } |
| 5bd4f169 | 6320 | } |
| bbd7ec4a | 6321 | else |
| 411e1bfb | 6322 | h->plt.plist = NULL; |
| 5bd4f169 AM |
6323 | |
| 6324 | /* If this is a weak symbol, and there is a real definition, the | |
| 6325 | processor independent code will have arranged for us to see the | |
| 6326 | real definition first, and we can just use the same value. */ | |
| f6e332e6 | 6327 | if (h->u.weakdef != NULL) |
| 5bd4f169 | 6328 | { |
| f6e332e6 AM |
6329 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 6330 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
| 6331 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
| 6332 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
| a23b6845 | 6333 | if (ELIMINATE_COPY_RELOCS) |
| f6e332e6 | 6334 | h->non_got_ref = h->u.weakdef->non_got_ref; |
| b34976b6 | 6335 | return TRUE; |
| 5bd4f169 AM |
6336 | } |
| 6337 | ||
| 5bd4f169 AM |
6338 | /* If we are creating a shared library, we must presume that the |
| 6339 | only references to the symbol are via the global offset table. | |
| 6340 | For such cases we need not do anything here; the relocations will | |
| 6341 | be handled correctly by relocate_section. */ | |
| 6342 | if (info->shared) | |
| b34976b6 | 6343 | return TRUE; |
| 5bd4f169 | 6344 | |
| 65f38f15 AM |
6345 | /* If there are no references to this symbol that do not use the |
| 6346 | GOT, we don't need to generate a copy reloc. */ | |
| f5385ebf | 6347 | if (!h->non_got_ref) |
| b34976b6 | 6348 | return TRUE; |
| 65f38f15 | 6349 | |
| b186458a JJ |
6350 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
| 6351 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
| 6352 | return TRUE; | |
| 6353 | ||
| f4656909 | 6354 | if (ELIMINATE_COPY_RELOCS) |
| 65f38f15 | 6355 | { |
| f4656909 AM |
6356 | struct ppc_link_hash_entry * eh; |
| 6357 | struct ppc_dyn_relocs *p; | |
| 65f38f15 | 6358 | |
| f4656909 AM |
6359 | eh = (struct ppc_link_hash_entry *) h; |
| 6360 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 6361 | { | |
| 6362 | s = p->sec->output_section; | |
| 6363 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 6364 | break; | |
| 6365 | } | |
| 6366 | ||
| 6367 | /* If we didn't find any dynamic relocs in read-only sections, then | |
| 6368 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
| 6369 | if (p == NULL) | |
| 6370 | { | |
| f5385ebf | 6371 | h->non_got_ref = 0; |
| f4656909 AM |
6372 | return TRUE; |
| 6373 | } | |
| 65f38f15 AM |
6374 | } |
| 6375 | ||
| 5d35169e | 6376 | if (h->plt.plist != NULL) |
| 97b639ba AM |
6377 | { |
| 6378 | /* We should never get here, but unfortunately there are versions | |
| 6379 | of gcc out there that improperly (for this ABI) put initialized | |
| 6380 | function pointers, vtable refs and suchlike in read-only | |
| 6381 | sections. Allow them to proceed, but warn that this might | |
| 6382 | break at runtime. */ | |
| 6383 | (*_bfd_error_handler) | |
| 6384 | (_("copy reloc against `%s' requires lazy plt linking; " | |
| 6385 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
| 6386 | h->root.root.string); | |
| 6387 | } | |
| 5d35169e AM |
6388 | |
| 6389 | /* This is a reference to a symbol defined by a dynamic object which | |
| 6390 | is not a function. */ | |
| 6391 | ||
| 909272ee AM |
6392 | if (h->size == 0) |
| 6393 | { | |
| 6394 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
| 6395 | h->root.root.string); | |
| 6396 | return TRUE; | |
| 6397 | } | |
| 6398 | ||
| 5bd4f169 AM |
6399 | /* We must allocate the symbol in our .dynbss section, which will |
| 6400 | become part of the .bss section of the executable. There will be | |
| 6401 | an entry for this symbol in the .dynsym section. The dynamic | |
| 6402 | object will contain position independent code, so all references | |
| 6403 | from the dynamic object to this symbol will go through the global | |
| 6404 | offset table. The dynamic linker will use the .dynsym entry to | |
| 6405 | determine the address it must put in the global offset table, so | |
| 6406 | both the dynamic object and the regular object will refer to the | |
| 6407 | same memory location for the variable. */ | |
| 5bd4f169 | 6408 | |
| 04c9666a AM |
6409 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
| 6410 | to copy the initial value out of the dynamic object and into the | |
| 5bd4f169 AM |
6411 | runtime process image. We need to remember the offset into the |
| 6412 | .rela.bss section we are going to use. */ | |
| 6413 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
| 6414 | { | |
| eea6121a | 6415 | htab->relbss->size += sizeof (Elf64_External_Rela); |
| f5385ebf | 6416 | h->needs_copy = 1; |
| 5bd4f169 AM |
6417 | } |
| 6418 | ||
| 4ce794b7 | 6419 | s = htab->dynbss; |
| 5bd4f169 | 6420 | |
| 027297b7 | 6421 | return _bfd_elf_adjust_dynamic_copy (h, s); |
| 5bd4f169 AM |
6422 | } |
| 6423 | ||
| e86ce104 AM |
6424 | /* If given a function descriptor symbol, hide both the function code |
| 6425 | sym and the descriptor. */ | |
| 6426 | static void | |
| 4ce794b7 AM |
6427 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
| 6428 | struct elf_link_hash_entry *h, | |
| 6429 | bfd_boolean force_local) | |
| e86ce104 | 6430 | { |
| 34814b9f | 6431 | struct ppc_link_hash_entry *eh; |
| e86ce104 AM |
6432 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
| 6433 | ||
| 34814b9f AM |
6434 | eh = (struct ppc_link_hash_entry *) h; |
| 6435 | if (eh->is_func_descriptor) | |
| e86ce104 | 6436 | { |
| 34814b9f | 6437 | struct ppc_link_hash_entry *fh = eh->oh; |
| e86ce104 | 6438 | |
| 721956f4 | 6439 | if (fh == NULL) |
| d1329ca3 AM |
6440 | { |
| 6441 | const char *p, *q; | |
| 6442 | struct ppc_link_hash_table *htab; | |
| 6443 | char save; | |
| 6444 | ||
| 6445 | /* We aren't supposed to use alloca in BFD because on | |
| 6446 | systems which do not have alloca the version in libiberty | |
| 6447 | calls xmalloc, which might cause the program to crash | |
| 6448 | when it runs out of memory. This function doesn't have a | |
| 6449 | return status, so there's no way to gracefully return an | |
| 6450 | error. So cheat. We know that string[-1] can be safely | |
| 34814b9f AM |
6451 | accessed; It's either a string in an ELF string table, |
| 6452 | or allocated in an objalloc structure. */ | |
| d1329ca3 | 6453 | |
| 34814b9f | 6454 | p = eh->elf.root.root.string - 1; |
| d1329ca3 AM |
6455 | save = *p; |
| 6456 | *(char *) p = '.'; | |
| 6457 | htab = ppc_hash_table (info); | |
| 34814b9f AM |
6458 | fh = (struct ppc_link_hash_entry *) |
| 6459 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
| d1329ca3 AM |
6460 | *(char *) p = save; |
| 6461 | ||
| 6462 | /* Unfortunately, if it so happens that the string we were | |
| 6463 | looking for was allocated immediately before this string, | |
| 6464 | then we overwrote the string terminator. That's the only | |
| 6465 | reason the lookup should fail. */ | |
| 6466 | if (fh == NULL) | |
| 6467 | { | |
| 34814b9f AM |
6468 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
| 6469 | while (q >= eh->elf.root.root.string && *q == *p) | |
| d1329ca3 | 6470 | --q, --p; |
| 34814b9f AM |
6471 | if (q < eh->elf.root.root.string && *p == '.') |
| 6472 | fh = (struct ppc_link_hash_entry *) | |
| 6473 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
| d1329ca3 AM |
6474 | } |
| 6475 | if (fh != NULL) | |
| 6476 | { | |
| 34814b9f AM |
6477 | eh->oh = fh; |
| 6478 | fh->oh = eh; | |
| d1329ca3 AM |
6479 | } |
| 6480 | } | |
| e86ce104 | 6481 | if (fh != NULL) |
| 34814b9f | 6482 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| e86ce104 AM |
6483 | } |
| 6484 | } | |
| 6485 | ||
| 411e1bfb | 6486 | static bfd_boolean |
| 8843416a AM |
6487 | get_sym_h (struct elf_link_hash_entry **hp, |
| 6488 | Elf_Internal_Sym **symp, | |
| 6489 | asection **symsecp, | |
| 6490 | char **tls_maskp, | |
| 6491 | Elf_Internal_Sym **locsymsp, | |
| 6492 | unsigned long r_symndx, | |
| 6493 | bfd *ibfd) | |
| 411e1bfb | 6494 | { |
| 0ffa91dd | 6495 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
| 411e1bfb AM |
6496 | |
| 6497 | if (r_symndx >= symtab_hdr->sh_info) | |
| 6498 | { | |
| 6499 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
| 6500 | struct elf_link_hash_entry *h; | |
| 6501 | ||
| 6502 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 6503 | h = elf_follow_link (h); |
| 411e1bfb AM |
6504 | |
| 6505 | if (hp != NULL) | |
| 6506 | *hp = h; | |
| 6507 | ||
| 6508 | if (symp != NULL) | |
| 6509 | *symp = NULL; | |
| 6510 | ||
| 6511 | if (symsecp != NULL) | |
| 6512 | { | |
| 6513 | asection *symsec = NULL; | |
| 6514 | if (h->root.type == bfd_link_hash_defined | |
| 6515 | || h->root.type == bfd_link_hash_defweak) | |
| 6516 | symsec = h->root.u.def.section; | |
| 6517 | *symsecp = symsec; | |
| 6518 | } | |
| 6519 | ||
| e7b938ca | 6520 | if (tls_maskp != NULL) |
| 411e1bfb AM |
6521 | { |
| 6522 | struct ppc_link_hash_entry *eh; | |
| 6523 | ||
| 6524 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 6525 | *tls_maskp = &eh->tls_mask; |
| 411e1bfb AM |
6526 | } |
| 6527 | } | |
| 6528 | else | |
| 6529 | { | |
| 6530 | Elf_Internal_Sym *sym; | |
| 6531 | Elf_Internal_Sym *locsyms = *locsymsp; | |
| 6532 | ||
| 6533 | if (locsyms == NULL) | |
| 6534 | { | |
| 6535 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 6536 | if (locsyms == NULL) | |
| 6537 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
| 6538 | symtab_hdr->sh_info, | |
| 6539 | 0, NULL, NULL, NULL); | |
| 6540 | if (locsyms == NULL) | |
| 6541 | return FALSE; | |
| 6542 | *locsymsp = locsyms; | |
| 6543 | } | |
| 6544 | sym = locsyms + r_symndx; | |
| 6545 | ||
| 6546 | if (hp != NULL) | |
| 6547 | *hp = NULL; | |
| 6548 | ||
| 6549 | if (symp != NULL) | |
| 6550 | *symp = sym; | |
| 6551 | ||
| 6552 | if (symsecp != NULL) | |
| cb33740c | 6553 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
| 411e1bfb | 6554 | |
| e7b938ca | 6555 | if (tls_maskp != NULL) |
| 411e1bfb AM |
6556 | { |
| 6557 | struct got_entry **lgot_ents; | |
| e7b938ca | 6558 | char *tls_mask; |
| 411e1bfb | 6559 | |
| e7b938ca | 6560 | tls_mask = NULL; |
| 411e1bfb AM |
6561 | lgot_ents = elf_local_got_ents (ibfd); |
| 6562 | if (lgot_ents != NULL) | |
| 6563 | { | |
| e054468f AM |
6564 | struct plt_entry **local_plt = (struct plt_entry **) |
| 6565 | (lgot_ents + symtab_hdr->sh_info); | |
| 6566 | char *lgot_masks = (char *) | |
| 6567 | (local_plt + symtab_hdr->sh_info); | |
| e7b938ca | 6568 | tls_mask = &lgot_masks[r_symndx]; |
| 411e1bfb | 6569 | } |
| e7b938ca | 6570 | *tls_maskp = tls_mask; |
| 411e1bfb AM |
6571 | } |
| 6572 | } | |
| 6573 | return TRUE; | |
| 6574 | } | |
| 6575 | ||
| e7b938ca | 6576 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
| 951fd09b | 6577 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
| ad8e1ba5 | 6578 | type suitable for optimization, and 1 otherwise. */ |
| 951fd09b AM |
6579 | |
| 6580 | static int | |
| 3a71aa26 AM |
6581 | get_tls_mask (char **tls_maskp, |
| 6582 | unsigned long *toc_symndx, | |
| 6583 | bfd_vma *toc_addend, | |
| 0d4792f7 | 6584 | Elf_Internal_Sym **locsymsp, |
| 3a71aa26 AM |
6585 | const Elf_Internal_Rela *rel, |
| 6586 | bfd *ibfd) | |
| 411e1bfb AM |
6587 | { |
| 6588 | unsigned long r_symndx; | |
| 0d4792f7 | 6589 | int next_r; |
| 411e1bfb AM |
6590 | struct elf_link_hash_entry *h; |
| 6591 | Elf_Internal_Sym *sym; | |
| 6592 | asection *sec; | |
| 6593 | bfd_vma off; | |
| 6594 | ||
| 6595 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| e7b938ca | 6596 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
| 951fd09b | 6597 | return 0; |
| 411e1bfb | 6598 | |
| e7b938ca | 6599 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
| 411e1bfb | 6600 | || sec == NULL |
| 7c8fe5c4 | 6601 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
| 951fd09b | 6602 | return 1; |
| 411e1bfb AM |
6603 | |
| 6604 | /* Look inside a TOC section too. */ | |
| 6605 | if (h != NULL) | |
| 6606 | { | |
| 6607 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
| 6608 | off = h->root.u.def.value; | |
| 6609 | } | |
| 6610 | else | |
| 6611 | off = sym->st_value; | |
| 6612 | off += rel->r_addend; | |
| 6613 | BFD_ASSERT (off % 8 == 0); | |
| 3a71aa26 AM |
6614 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
| 6615 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
| 0d4792f7 AM |
6616 | if (toc_symndx != NULL) |
| 6617 | *toc_symndx = r_symndx; | |
| 3a71aa26 AM |
6618 | if (toc_addend != NULL) |
| 6619 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
| 6620 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
| 6621 | return 0; | |
| 0d4792f7 AM |
6622 | if ((h == NULL |
| 6623 | || ((h->root.type == bfd_link_hash_defined | |
| 6624 | || h->root.type == bfd_link_hash_defweak) | |
| f5385ebf | 6625 | && !h->def_dynamic)) |
| 0d4792f7 AM |
6626 | && (next_r == -1 || next_r == -2)) |
| 6627 | return 1 - next_r; | |
| 951fd09b | 6628 | return 1; |
| 411e1bfb AM |
6629 | } |
| 6630 | ||
| 754021d0 | 6631 | /* Adjust all global syms defined in opd sections. In gcc generated |
| 8387904d | 6632 | code for the old ABI, these will already have been done. */ |
| 754021d0 AM |
6633 | |
| 6634 | static bfd_boolean | |
| 6635 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 6636 | { | |
| 6637 | struct ppc_link_hash_entry *eh; | |
| 6638 | asection *sym_sec; | |
| 74f0fb50 | 6639 | struct _opd_sec_data *opd; |
| 754021d0 AM |
6640 | |
| 6641 | if (h->root.type == bfd_link_hash_indirect) | |
| 6642 | return TRUE; | |
| 6643 | ||
| 6644 | if (h->root.type == bfd_link_hash_warning) | |
| 6645 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 6646 | ||
| 6647 | if (h->root.type != bfd_link_hash_defined | |
| 6648 | && h->root.type != bfd_link_hash_defweak) | |
| 6649 | return TRUE; | |
| 6650 | ||
| 6651 | eh = (struct ppc_link_hash_entry *) h; | |
| 6652 | if (eh->adjust_done) | |
| 6653 | return TRUE; | |
| 6654 | ||
| 6655 | sym_sec = eh->elf.root.u.def.section; | |
| 74f0fb50 AM |
6656 | opd = get_opd_info (sym_sec); |
| 6657 | if (opd != NULL && opd->adjust != NULL) | |
| 754021d0 | 6658 | { |
| 74f0fb50 | 6659 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
| 4025353c AM |
6660 | if (adjust == -1) |
| 6661 | { | |
| 6662 | /* This entry has been deleted. */ | |
| b3fac117 | 6663 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
| 81688140 AM |
6664 | if (dsec == NULL) |
| 6665 | { | |
| 6666 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
| 6667 | if (elf_discarded_section (dsec)) | |
| 6668 | { | |
| b3fac117 | 6669 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
| 81688140 AM |
6670 | break; |
| 6671 | } | |
| 6672 | } | |
| 4025353c | 6673 | eh->elf.root.u.def.value = 0; |
| 81688140 | 6674 | eh->elf.root.u.def.section = dsec; |
| 4025353c AM |
6675 | } |
| 6676 | else | |
| 6677 | eh->elf.root.u.def.value += adjust; | |
| 754021d0 AM |
6678 | eh->adjust_done = 1; |
| 6679 | } | |
| 6680 | return TRUE; | |
| 6681 | } | |
| 6682 | ||
| 8c1d1bb8 AM |
6683 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
| 6684 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
| 6685 | have already been determined. */ | |
| 6686 | ||
| 6687 | static bfd_boolean | |
| 6688 | dec_dynrel_count (bfd_vma r_info, | |
| 6689 | asection *sec, | |
| 6690 | struct bfd_link_info *info, | |
| 6691 | Elf_Internal_Sym **local_syms, | |
| 6692 | struct elf_link_hash_entry *h, | |
| 6693 | asection *sym_sec) | |
| 6694 | { | |
| 6695 | enum elf_ppc64_reloc_type r_type; | |
| 6696 | struct ppc_dyn_relocs *p; | |
| 6697 | struct ppc_dyn_relocs **pp; | |
| 6698 | ||
| 6699 | /* Can this reloc be dynamic? This switch, and later tests here | |
| 6700 | should be kept in sync with the code in check_relocs. */ | |
| 6701 | r_type = ELF64_R_TYPE (r_info); | |
| 6702 | switch (r_type) | |
| 6703 | { | |
| 6704 | default: | |
| 6705 | return TRUE; | |
| 6706 | ||
| 6707 | case R_PPC64_TPREL16: | |
| 6708 | case R_PPC64_TPREL16_LO: | |
| 6709 | case R_PPC64_TPREL16_HI: | |
| 6710 | case R_PPC64_TPREL16_HA: | |
| 6711 | case R_PPC64_TPREL16_DS: | |
| 6712 | case R_PPC64_TPREL16_LO_DS: | |
| 6713 | case R_PPC64_TPREL16_HIGHER: | |
| 6714 | case R_PPC64_TPREL16_HIGHERA: | |
| 6715 | case R_PPC64_TPREL16_HIGHEST: | |
| 6716 | case R_PPC64_TPREL16_HIGHESTA: | |
| 6717 | if (!info->shared) | |
| 6718 | return TRUE; | |
| 6719 | ||
| 6720 | case R_PPC64_TPREL64: | |
| 6721 | case R_PPC64_DTPMOD64: | |
| 6722 | case R_PPC64_DTPREL64: | |
| 6723 | case R_PPC64_ADDR64: | |
| 6724 | case R_PPC64_REL30: | |
| 6725 | case R_PPC64_REL32: | |
| 6726 | case R_PPC64_REL64: | |
| 6727 | case R_PPC64_ADDR14: | |
| 6728 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 6729 | case R_PPC64_ADDR14_BRTAKEN: | |
| 6730 | case R_PPC64_ADDR16: | |
| 6731 | case R_PPC64_ADDR16_DS: | |
| 6732 | case R_PPC64_ADDR16_HA: | |
| 6733 | case R_PPC64_ADDR16_HI: | |
| 6734 | case R_PPC64_ADDR16_HIGHER: | |
| 6735 | case R_PPC64_ADDR16_HIGHERA: | |
| 6736 | case R_PPC64_ADDR16_HIGHEST: | |
| 6737 | case R_PPC64_ADDR16_HIGHESTA: | |
| 6738 | case R_PPC64_ADDR16_LO: | |
| 6739 | case R_PPC64_ADDR16_LO_DS: | |
| 6740 | case R_PPC64_ADDR24: | |
| 6741 | case R_PPC64_ADDR32: | |
| 6742 | case R_PPC64_UADDR16: | |
| 6743 | case R_PPC64_UADDR32: | |
| 6744 | case R_PPC64_UADDR64: | |
| 6745 | case R_PPC64_TOC: | |
| 6746 | break; | |
| 6747 | } | |
| 6748 | ||
| 6749 | if (local_syms != NULL) | |
| 6750 | { | |
| 6751 | unsigned long r_symndx; | |
| 6752 | Elf_Internal_Sym *sym; | |
| 6753 | bfd *ibfd = sec->owner; | |
| 6754 | ||
| 6755 | r_symndx = ELF64_R_SYM (r_info); | |
| 6756 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
| 6757 | return FALSE; | |
| 6758 | } | |
| 6759 | ||
| 6760 | if ((info->shared | |
| 1d483afe | 6761 | && (must_be_dyn_reloc (info, r_type) |
| 8c1d1bb8 AM |
6762 | || (h != NULL |
| 6763 | && (!info->symbolic | |
| 6764 | || h->root.type == bfd_link_hash_defweak | |
| 6765 | || !h->def_regular)))) | |
| 6766 | || (ELIMINATE_COPY_RELOCS | |
| 6767 | && !info->shared | |
| 6768 | && h != NULL | |
| 6769 | && (h->root.type == bfd_link_hash_defweak | |
| 6770 | || !h->def_regular))) | |
| 6771 | ; | |
| 6772 | else | |
| 6773 | return TRUE; | |
| 6774 | ||
| 6775 | if (h != NULL) | |
| 6776 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
| 8c1d1bb8 | 6777 | else |
| 6edfbbad | 6778 | { |
| 60124e18 AM |
6779 | if (sym_sec != NULL) |
| 6780 | { | |
| 6781 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
| 6782 | pp = (struct ppc_dyn_relocs **) vpp; | |
| 6783 | } | |
| 6784 | else | |
| 6785 | { | |
| 6786 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
| 6787 | pp = (struct ppc_dyn_relocs **) vpp; | |
| 6788 | } | |
| 6789 | ||
| 6790 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
| 6791 | with local syms for a given section. Don't report a dynreloc | |
| 6792 | miscount. */ | |
| 6793 | if (*pp == NULL) | |
| 6794 | return TRUE; | |
| 6edfbbad | 6795 | } |
| 8c1d1bb8 AM |
6796 | |
| 6797 | while ((p = *pp) != NULL) | |
| 6798 | { | |
| 6799 | if (p->sec == sec) | |
| 6800 | { | |
| 1d483afe | 6801 | if (!must_be_dyn_reloc (info, r_type)) |
| 8c1d1bb8 AM |
6802 | p->pc_count -= 1; |
| 6803 | p->count -= 1; | |
| 6804 | if (p->count == 0) | |
| 6805 | *pp = p->next; | |
| 6806 | return TRUE; | |
| 6807 | } | |
| 6808 | pp = &p->next; | |
| 6809 | } | |
| 6810 | ||
| 6811 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
| 6812 | sec->owner, sec); | |
| 6813 | bfd_set_error (bfd_error_bad_value); | |
| 6814 | return FALSE; | |
| 6815 | } | |
| 6816 | ||
| 754021d0 AM |
6817 | /* Remove unused Official Procedure Descriptor entries. Currently we |
| 6818 | only remove those associated with functions in discarded link-once | |
| 6819 | sections, or weakly defined functions that have been overridden. It | |
| 6820 | would be possible to remove many more entries for statically linked | |
| 6821 | applications. */ | |
| 6822 | ||
| b34976b6 | 6823 | bfd_boolean |
| 3f764659 JJ |
6824 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
| 6825 | bfd_boolean non_overlapping) | |
| 1e2f5b6e AM |
6826 | { |
| 6827 | bfd *ibfd; | |
| 754021d0 | 6828 | bfd_boolean some_edited = FALSE; |
| 3f764659 | 6829 | asection *need_pad = NULL; |
| 1e2f5b6e | 6830 | |
| 411e1bfb | 6831 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 1e2f5b6e AM |
6832 | { |
| 6833 | asection *sec; | |
| 6834 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 6835 | Elf_Internal_Shdr *symtab_hdr; | |
| 6cdc0ccc | 6836 | Elf_Internal_Sym *local_syms; |
| 1e2f5b6e AM |
6837 | struct elf_link_hash_entry **sym_hashes; |
| 6838 | bfd_vma offset; | |
| 74f0fb50 | 6839 | struct _opd_sec_data *opd; |
| 3f764659 JJ |
6840 | bfd_boolean need_edit, add_aux_fields; |
| 6841 | bfd_size_type cnt_16b = 0; | |
| 1e2f5b6e AM |
6842 | |
| 6843 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
| 46de2a7c | 6844 | if (sec == NULL || sec->size == 0) |
| 1e2f5b6e AM |
6845 | continue; |
| 6846 | ||
| 4b85d634 AM |
6847 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
| 6848 | continue; | |
| 6849 | ||
| 1e2f5b6e AM |
6850 | if (sec->output_section == bfd_abs_section_ptr) |
| 6851 | continue; | |
| 6852 | ||
| 6853 | /* Look through the section relocs. */ | |
| 6854 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
| 6855 | continue; | |
| 6856 | ||
| 6cdc0ccc | 6857 | local_syms = NULL; |
| 0ffa91dd | 6858 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 1e2f5b6e AM |
6859 | sym_hashes = elf_sym_hashes (ibfd); |
| 6860 | ||
| 6861 | /* Read the relocations. */ | |
| 4ce794b7 | 6862 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
| 45d6a902 | 6863 | info->keep_memory); |
| 1e2f5b6e | 6864 | if (relstart == NULL) |
| b34976b6 | 6865 | return FALSE; |
| 1e2f5b6e AM |
6866 | |
| 6867 | /* First run through the relocs to check they are sane, and to | |
| 6868 | determine whether we need to edit this opd section. */ | |
| b34976b6 | 6869 | need_edit = FALSE; |
| 3f764659 | 6870 | need_pad = sec; |
| 1e2f5b6e AM |
6871 | offset = 0; |
| 6872 | relend = relstart + sec->reloc_count; | |
| 50bc7936 | 6873 | for (rel = relstart; rel < relend; ) |
| 1e2f5b6e | 6874 | { |
| 04c9666a | 6875 | enum elf_ppc64_reloc_type r_type; |
| 1e2f5b6e AM |
6876 | unsigned long r_symndx; |
| 6877 | asection *sym_sec; | |
| 6878 | struct elf_link_hash_entry *h; | |
| 6879 | Elf_Internal_Sym *sym; | |
| 6880 | ||
| 3f764659 | 6881 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
| 1e2f5b6e AM |
6882 | only interested in the reloc pointing to a function entry |
| 6883 | point. */ | |
| 50bc7936 AM |
6884 | if (rel->r_offset != offset |
| 6885 | || rel + 1 >= relend | |
| 6886 | || (rel + 1)->r_offset != offset + 8) | |
| 1e2f5b6e AM |
6887 | { |
| 6888 | /* If someone messes with .opd alignment then after a | |
| 6889 | "ld -r" we might have padding in the middle of .opd. | |
| 6890 | Also, there's nothing to prevent someone putting | |
| 6891 | something silly in .opd with the assembler. No .opd | |
| b34976b6 | 6892 | optimization for them! */ |
| 3f764659 | 6893 | broken_opd: |
| 1e2f5b6e | 6894 | (*_bfd_error_handler) |
| d003868e | 6895 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
| b34976b6 | 6896 | need_edit = FALSE; |
| 1e2f5b6e AM |
6897 | break; |
| 6898 | } | |
| 6899 | ||
| 50bc7936 AM |
6900 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
| 6901 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
| 6902 | { | |
| 6903 | (*_bfd_error_handler) | |
| d003868e AM |
6904 | (_("%B: unexpected reloc type %u in .opd section"), |
| 6905 | ibfd, r_type); | |
| 50bc7936 AM |
6906 | need_edit = FALSE; |
| 6907 | break; | |
| 6908 | } | |
| 6909 | ||
| 1e2f5b6e | 6910 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 411e1bfb AM |
6911 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 6912 | r_symndx, ibfd)) | |
| 50bc7936 | 6913 | goto error_ret; |
| 1e2f5b6e AM |
6914 | |
| 6915 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
| 6916 | { | |
| 411e1bfb AM |
6917 | const char *sym_name; |
| 6918 | if (h != NULL) | |
| 6919 | sym_name = h->root.root.string; | |
| 6920 | else | |
| 26c61ae5 L |
6921 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
| 6922 | sym_sec); | |
| 411e1bfb | 6923 | |
| 1e2f5b6e | 6924 | (*_bfd_error_handler) |
| d003868e AM |
6925 | (_("%B: undefined sym `%s' in .opd section"), |
| 6926 | ibfd, sym_name); | |
| b34976b6 | 6927 | need_edit = FALSE; |
| 1e2f5b6e AM |
6928 | break; |
| 6929 | } | |
| 6930 | ||
| 51020317 AM |
6931 | /* opd entries are always for functions defined in the |
| 6932 | current input bfd. If the symbol isn't defined in the | |
| 6933 | input bfd, then we won't be using the function in this | |
| 6934 | bfd; It must be defined in a linkonce section in another | |
| 6935 | bfd, or is weak. It's also possible that we are | |
| 6936 | discarding the function due to a linker script /DISCARD/, | |
| 6937 | which we test for via the output_section. */ | |
| 6938 | if (sym_sec->owner != ibfd | |
| 6939 | || sym_sec->output_section == bfd_abs_section_ptr) | |
| b34976b6 | 6940 | need_edit = TRUE; |
| 1e2f5b6e | 6941 | |
| 50bc7936 | 6942 | rel += 2; |
| 3f764659 JJ |
6943 | if (rel == relend |
| 6944 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
| 6945 | { | |
| 6946 | if (sec->size == offset + 24) | |
| 6947 | { | |
| 6948 | need_pad = NULL; | |
| 6949 | break; | |
| 6950 | } | |
| 6951 | if (rel == relend && sec->size == offset + 16) | |
| 6952 | { | |
| 6953 | cnt_16b++; | |
| 6954 | break; | |
| 6955 | } | |
| 6956 | goto broken_opd; | |
| 6957 | } | |
| 6958 | ||
| 6959 | if (rel->r_offset == offset + 24) | |
| 6960 | offset += 24; | |
| 6961 | else if (rel->r_offset != offset + 16) | |
| 6962 | goto broken_opd; | |
| 6963 | else if (rel + 1 < relend | |
| 6964 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
| 6965 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
| 6966 | { | |
| 6967 | offset += 16; | |
| 6968 | cnt_16b++; | |
| 6969 | } | |
| 6970 | else if (rel + 2 < relend | |
| 6971 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
| 6972 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
| 6973 | { | |
| 6974 | offset += 24; | |
| 6975 | rel += 1; | |
| 6976 | } | |
| 6977 | else | |
| 6978 | goto broken_opd; | |
| 1e2f5b6e AM |
6979 | } |
| 6980 | ||
| 3f764659 JJ |
6981 | add_aux_fields = non_overlapping && cnt_16b > 0; |
| 6982 | ||
| 6983 | if (need_edit || add_aux_fields) | |
| 1e2f5b6e AM |
6984 | { |
| 6985 | Elf_Internal_Rela *write_rel; | |
| 6986 | bfd_byte *rptr, *wptr; | |
| 983bddc8 | 6987 | bfd_byte *new_contents; |
| b34976b6 | 6988 | bfd_boolean skip; |
| 3f764659 | 6989 | long opd_ent_size; |
| 74f0fb50 AM |
6990 | bfd_size_type amt; |
| 6991 | ||
| 983bddc8 | 6992 | new_contents = NULL; |
| 74f0fb50 AM |
6993 | amt = sec->size * sizeof (long) / 8; |
| 6994 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
| 6995 | opd->adjust = bfd_zalloc (obfd, amt); | |
| 6996 | if (opd->adjust == NULL) | |
| 6997 | return FALSE; | |
| 6998 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
| 1e2f5b6e AM |
6999 | |
| 7000 | /* This seems a waste of time as input .opd sections are all | |
| 7001 | zeros as generated by gcc, but I suppose there's no reason | |
| 7002 | this will always be so. We might start putting something in | |
| 7003 | the third word of .opd entries. */ | |
| 7004 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
| 7005 | { | |
| eea6121a AM |
7006 | bfd_byte *loc; |
| 7007 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
| 6cdc0ccc | 7008 | { |
| eea6121a AM |
7009 | if (loc != NULL) |
| 7010 | free (loc); | |
| 50bc7936 | 7011 | error_ret: |
| 6cdc0ccc AM |
7012 | if (local_syms != NULL |
| 7013 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 7014 | free (local_syms); | |
| 6cdc0ccc AM |
7015 | if (elf_section_data (sec)->relocs != relstart) |
| 7016 | free (relstart); | |
| b34976b6 | 7017 | return FALSE; |
| 6cdc0ccc | 7018 | } |
| 1e2f5b6e AM |
7019 | sec->contents = loc; |
| 7020 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 7021 | } | |
| 7022 | ||
| 7023 | elf_section_data (sec)->relocs = relstart; | |
| 7024 | ||
| 3f764659 | 7025 | new_contents = sec->contents; |
| 3f764659 JJ |
7026 | if (add_aux_fields) |
| 7027 | { | |
| 7028 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
| 7029 | if (new_contents == NULL) | |
| 7030 | return FALSE; | |
| 7031 | need_pad = FALSE; | |
| 3f764659 | 7032 | } |
| b4f4e59f AM |
7033 | wptr = new_contents; |
| 7034 | rptr = sec->contents; | |
| 3f764659 | 7035 | |
| 1e2f5b6e | 7036 | write_rel = relstart; |
| b34976b6 | 7037 | skip = FALSE; |
| 1e2f5b6e | 7038 | offset = 0; |
| 3f764659 | 7039 | opd_ent_size = 0; |
| 1e2f5b6e AM |
7040 | for (rel = relstart; rel < relend; rel++) |
| 7041 | { | |
| 50bc7936 AM |
7042 | unsigned long r_symndx; |
| 7043 | asection *sym_sec; | |
| 7044 | struct elf_link_hash_entry *h; | |
| 7045 | Elf_Internal_Sym *sym; | |
| 7046 | ||
| 7047 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7048 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| d37c89e5 | 7049 | r_symndx, ibfd)) |
| 50bc7936 AM |
7050 | goto error_ret; |
| 7051 | ||
| 1e2f5b6e AM |
7052 | if (rel->r_offset == offset) |
| 7053 | { | |
| 50bc7936 | 7054 | struct ppc_link_hash_entry *fdh = NULL; |
| 3f764659 JJ |
7055 | |
| 7056 | /* See if the .opd entry is full 24 byte or | |
| 7057 | 16 byte (with fd_aux entry overlapped with next | |
| 7058 | fd_func). */ | |
| 7059 | opd_ent_size = 24; | |
| 7060 | if ((rel + 2 == relend && sec->size == offset + 16) | |
| 7061 | || (rel + 3 < relend | |
| 7062 | && rel[2].r_offset == offset + 16 | |
| 7063 | && rel[3].r_offset == offset + 24 | |
| 7064 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
| 7065 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
| 7066 | opd_ent_size = 16; | |
| 7067 | ||
| 4025353c AM |
7068 | if (h != NULL |
| 7069 | && h->root.root.string[0] == '.') | |
| c4f68ce3 | 7070 | { |
| b31867b6 AM |
7071 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, |
| 7072 | ppc_hash_table (info)); | |
| c4f68ce3 AM |
7073 | if (fdh != NULL |
| 7074 | && fdh->elf.root.type != bfd_link_hash_defined | |
| 7075 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
| 7076 | fdh = NULL; | |
| 7077 | } | |
| 1e2f5b6e | 7078 | |
| 51020317 AM |
7079 | skip = (sym_sec->owner != ibfd |
| 7080 | || sym_sec->output_section == bfd_abs_section_ptr); | |
| a4aa0fb7 AM |
7081 | if (skip) |
| 7082 | { | |
| 4025353c | 7083 | if (fdh != NULL && sym_sec->owner == ibfd) |
| a4aa0fb7 AM |
7084 | { |
| 7085 | /* Arrange for the function descriptor sym | |
| 7086 | to be dropped. */ | |
| d6fe2dc1 AM |
7087 | fdh->elf.root.u.def.value = 0; |
| 7088 | fdh->elf.root.u.def.section = sym_sec; | |
| a4aa0fb7 | 7089 | } |
| 74f0fb50 | 7090 | opd->adjust[rel->r_offset / 8] = -1; |
| a4aa0fb7 AM |
7091 | } |
| 7092 | else | |
| 1e2f5b6e AM |
7093 | { |
| 7094 | /* We'll be keeping this opd entry. */ | |
| 7095 | ||
| 4025353c | 7096 | if (fdh != NULL) |
| 1e2f5b6e | 7097 | { |
| 754021d0 AM |
7098 | /* Redefine the function descriptor symbol to |
| 7099 | this location in the opd section. It is | |
| 7100 | necessary to update the value here rather | |
| 7101 | than using an array of adjustments as we do | |
| 7102 | for local symbols, because various places | |
| 7103 | in the generic ELF code use the value | |
| 7104 | stored in u.def.value. */ | |
| 3f764659 | 7105 | fdh->elf.root.u.def.value = wptr - new_contents; |
| 754021d0 | 7106 | fdh->adjust_done = 1; |
| 1e2f5b6e | 7107 | } |
| 754021d0 AM |
7108 | |
| 7109 | /* Local syms are a bit tricky. We could | |
| 7110 | tweak them as they can be cached, but | |
| 7111 | we'd need to look through the local syms | |
| 7112 | for the function descriptor sym which we | |
| 7113 | don't have at the moment. So keep an | |
| 7114 | array of adjustments. */ | |
| 74f0fb50 | 7115 | opd->adjust[rel->r_offset / 8] |
| 3f764659 | 7116 | = (wptr - new_contents) - (rptr - sec->contents); |
| 1e2f5b6e AM |
7117 | |
| 7118 | if (wptr != rptr) | |
| 3f764659 JJ |
7119 | memcpy (wptr, rptr, opd_ent_size); |
| 7120 | wptr += opd_ent_size; | |
| 7121 | if (add_aux_fields && opd_ent_size == 16) | |
| 7122 | { | |
| 7123 | memset (wptr, '\0', 8); | |
| 7124 | wptr += 8; | |
| 7125 | } | |
| 1e2f5b6e | 7126 | } |
| 3f764659 JJ |
7127 | rptr += opd_ent_size; |
| 7128 | offset += opd_ent_size; | |
| 1e2f5b6e AM |
7129 | } |
| 7130 | ||
| 50bc7936 AM |
7131 | if (skip) |
| 7132 | { | |
| 60124e18 AM |
7133 | if (!NO_OPD_RELOCS |
| 7134 | && !info->relocatable | |
| 18d944df AM |
7135 | && !dec_dynrel_count (rel->r_info, sec, info, |
| 7136 | NULL, h, sym_sec)) | |
| 8c1d1bb8 | 7137 | goto error_ret; |
| 50bc7936 AM |
7138 | } |
| 7139 | else | |
| 1e2f5b6e | 7140 | { |
| 50bc7936 AM |
7141 | /* We need to adjust any reloc offsets to point to the |
| 7142 | new opd entries. While we're at it, we may as well | |
| 7143 | remove redundant relocs. */ | |
| 74f0fb50 | 7144 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
| 1e2f5b6e AM |
7145 | if (write_rel != rel) |
| 7146 | memcpy (write_rel, rel, sizeof (*rel)); | |
| 7147 | ++write_rel; | |
| 7148 | } | |
| 7149 | } | |
| 7150 | ||
| 3f764659 | 7151 | sec->size = wptr - new_contents; |
| 1e2f5b6e | 7152 | sec->reloc_count = write_rel - relstart; |
| 3f764659 JJ |
7153 | if (add_aux_fields) |
| 7154 | { | |
| 7155 | free (sec->contents); | |
| 7156 | sec->contents = new_contents; | |
| 7157 | } | |
| 7158 | ||
| 05bf9422 | 7159 | /* Fudge the header size too, as this is used later in |
| cdcf6e38 AM |
7160 | elf_bfd_final_link if we are emitting relocs. */ |
| 7161 | elf_section_data (sec)->rel_hdr.sh_size | |
| 7162 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
| 7163 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
| 754021d0 | 7164 | some_edited = TRUE; |
| 1e2f5b6e | 7165 | } |
| 6cdc0ccc | 7166 | else if (elf_section_data (sec)->relocs != relstart) |
| 1e2f5b6e | 7167 | free (relstart); |
| 6cdc0ccc | 7168 | |
| 411e1bfb AM |
7169 | if (local_syms != NULL |
| 7170 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 7171 | { | |
| 7172 | if (!info->keep_memory) | |
| 7173 | free (local_syms); | |
| 7174 | else | |
| 7175 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 7176 | } | |
| 7177 | } | |
| 7178 | ||
| 754021d0 AM |
7179 | if (some_edited) |
| 7180 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
| 7181 | ||
| 3f764659 JJ |
7182 | /* If we are doing a final link and the last .opd entry is just 16 byte |
| 7183 | long, add a 8 byte padding after it. */ | |
| 7184 | if (need_pad != NULL && !info->relocatable) | |
| 7185 | { | |
| 7186 | bfd_byte *p; | |
| 7187 | ||
| 7188 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
| 7189 | { | |
| 7190 | BFD_ASSERT (need_pad->size > 0); | |
| 7191 | ||
| 7192 | p = bfd_malloc (need_pad->size + 8); | |
| 7193 | if (p == NULL) | |
| 7194 | return FALSE; | |
| 699733f6 | 7195 | |
| 3f764659 JJ |
7196 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
| 7197 | p, 0, need_pad->size)) | |
| 7198 | return FALSE; | |
| 7199 | ||
| 7200 | need_pad->contents = p; | |
| 7201 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 7202 | } | |
| 7203 | else | |
| 7204 | { | |
| 7205 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
| 7206 | if (p == NULL) | |
| 7207 | return FALSE; | |
| 7208 | ||
| 7209 | need_pad->contents = p; | |
| 7210 | } | |
| 7211 | ||
| 7212 | memset (need_pad->contents + need_pad->size, 0, 8); | |
| 7213 | need_pad->size += 8; | |
| 7214 | } | |
| 7215 | ||
| 411e1bfb AM |
7216 | return TRUE; |
| 7217 | } | |
| 7218 | ||
| e1918d23 | 7219 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
| 411e1bfb | 7220 | |
| e1918d23 | 7221 | asection * |
| a7f2871e AM |
7222 | ppc64_elf_tls_setup (bfd *obfd, |
| 7223 | struct bfd_link_info *info, | |
| 7224 | int no_tls_get_addr_opt) | |
| 411e1bfb | 7225 | { |
| 411e1bfb AM |
7226 | struct ppc_link_hash_table *htab; |
| 7227 | ||
| 411e1bfb | 7228 | htab = ppc_hash_table (info); |
| 3a71aa26 AM |
7229 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
| 7230 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 7231 | FALSE, FALSE, TRUE)); | |
| a7f2871e AM |
7232 | /* Move dynamic linking info to the function descriptor sym. */ |
| 7233 | if (htab->tls_get_addr != NULL) | |
| 7234 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
| 3a71aa26 AM |
7235 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
| 7236 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
| 7237 | FALSE, FALSE, TRUE)); | |
| a7f2871e AM |
7238 | if (!no_tls_get_addr_opt) |
| 7239 | { | |
| 7240 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
| 7241 | ||
| 7242 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
| 7243 | FALSE, FALSE, TRUE); | |
| 7244 | if (opt != NULL) | |
| 7245 | func_desc_adjust (opt, info); | |
| 7246 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
| 7247 | FALSE, FALSE, TRUE); | |
| 7248 | if (opt_fd != NULL | |
| 7249 | && (opt_fd->root.type == bfd_link_hash_defined | |
| 7250 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
| 7251 | { | |
| 7252 | /* If glibc supports an optimized __tls_get_addr call stub, | |
| 7253 | signalled by the presence of __tls_get_addr_opt, and we'll | |
| 7254 | be calling __tls_get_addr via a plt call stub, then | |
| 7255 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
| 7256 | tga_fd = &htab->tls_get_addr_fd->elf; | |
| 7257 | if (htab->elf.dynamic_sections_created | |
| 7258 | && tga_fd != NULL | |
| 7259 | && (tga_fd->type == STT_FUNC | |
| 7260 | || tga_fd->needs_plt) | |
| 7261 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
| 7262 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
| 7263 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
| 7264 | { | |
| 7265 | struct plt_entry *ent; | |
| 7266 | ||
| 7267 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
| 7268 | if (ent->plt.refcount > 0) | |
| 7269 | break; | |
| 7270 | if (ent != NULL) | |
| 7271 | { | |
| 7272 | tga_fd->root.type = bfd_link_hash_indirect; | |
| 7273 | tga_fd->root.u.i.link = &opt_fd->root; | |
| 7274 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
| 7275 | if (opt_fd->dynindx != -1) | |
| 7276 | { | |
| 7277 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
| 7278 | opt_fd->dynindx = -1; | |
| 7279 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 7280 | opt_fd->dynstr_index); | |
| 7281 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
| 7282 | return FALSE; | |
| 7283 | } | |
| 7284 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
| 7285 | tga = &htab->tls_get_addr->elf; | |
| 7286 | if (opt != NULL && tga != NULL) | |
| 7287 | { | |
| 7288 | tga->root.type = bfd_link_hash_indirect; | |
| 7289 | tga->root.u.i.link = &opt->root; | |
| 7290 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
| 7291 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
| 7292 | tga->forced_local); | |
| 7293 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
| 7294 | } | |
| 7295 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
| 7296 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
| 7297 | if (htab->tls_get_addr != NULL) | |
| 7298 | { | |
| 7299 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
| 7300 | htab->tls_get_addr->is_func = 1; | |
| 7301 | } | |
| 7302 | } | |
| 7303 | } | |
| 7304 | } | |
| 7305 | else | |
| 7306 | no_tls_get_addr_opt = TRUE; | |
| 7307 | } | |
| 7308 | htab->no_tls_get_addr_opt = no_tls_get_addr_opt; | |
| 3a71aa26 AM |
7309 | return _bfd_elf_tls_setup (obfd, info); |
| 7310 | } | |
| 8387904d | 7311 | |
| 3a71aa26 AM |
7312 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
| 7313 | HASH1 or HASH2. */ | |
| 8387904d | 7314 | |
| 3a71aa26 AM |
7315 | static bfd_boolean |
| 7316 | branch_reloc_hash_match (const bfd *ibfd, | |
| 7317 | const Elf_Internal_Rela *rel, | |
| 7318 | const struct ppc_link_hash_entry *hash1, | |
| 7319 | const struct ppc_link_hash_entry *hash2) | |
| 7320 | { | |
| 7321 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 7322 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
| 7323 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7324 | ||
| e054468f | 7325 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
| 8387904d | 7326 | { |
| 3a71aa26 AM |
7327 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
| 7328 | struct elf_link_hash_entry *h; | |
| 8387904d | 7329 | |
| 3a71aa26 | 7330 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| b31867b6 | 7331 | h = elf_follow_link (h); |
| 3a71aa26 AM |
7332 | if (h == &hash1->elf || h == &hash2->elf) |
| 7333 | return TRUE; | |
| a48ebf4d | 7334 | } |
| 3a71aa26 | 7335 | return FALSE; |
| 951fd09b | 7336 | } |
| 411e1bfb | 7337 | |
| 951fd09b AM |
7338 | /* Run through all the TLS relocs looking for optimization |
| 7339 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
| 7340 | a preliminary section layout so that we know the TLS segment | |
| 7341 | offsets. We can't optimize earlier because some optimizations need | |
| 7342 | to know the tp offset, and we need to optimize before allocating | |
| 7343 | dynamic relocations. */ | |
| 7344 | ||
| 7345 | bfd_boolean | |
| 4ce794b7 | 7346 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
| 951fd09b AM |
7347 | { |
| 7348 | bfd *ibfd; | |
| 7349 | asection *sec; | |
| 7350 | struct ppc_link_hash_table *htab; | |
| 102890f0 | 7351 | int pass; |
| 951fd09b | 7352 | |
| 1d483afe | 7353 | if (info->relocatable || !info->executable) |
| 411e1bfb AM |
7354 | return TRUE; |
| 7355 | ||
| 951fd09b | 7356 | htab = ppc_hash_table (info); |
| 411e1bfb AM |
7357 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 7358 | { | |
| 7359 | Elf_Internal_Sym *locsyms = NULL; | |
| 30038c59 AM |
7360 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
| 7361 | unsigned char *toc_ref = NULL; | |
| 411e1bfb | 7362 | |
| 102890f0 AM |
7363 | /* Look at all the sections for this file. Make two passes over |
| 7364 | the relocs. On the first pass, mark toc entries involved | |
| 7365 | with tls relocs, and check that tls relocs involved in | |
| 7366 | setting up a tls_get_addr call are indeed followed by such a | |
| 7367 | call. If they are not, exclude them from the optimizations | |
| 7368 | done on the second pass. */ | |
| 7369 | for (pass = 0; pass < 2; ++pass) | |
| 7370 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
| 7371 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
| 7372 | { | |
| 7373 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 411e1bfb | 7374 | |
| 102890f0 AM |
7375 | /* Read the relocations. */ |
| 7376 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 7377 | info->keep_memory); | |
| 7378 | if (relstart == NULL) | |
| 7379 | return FALSE; | |
| 411e1bfb | 7380 | |
| 102890f0 AM |
7381 | relend = relstart + sec->reloc_count; |
| 7382 | for (rel = relstart; rel < relend; rel++) | |
| 7383 | { | |
| 7384 | enum elf_ppc64_reloc_type r_type; | |
| 7385 | unsigned long r_symndx; | |
| 7386 | struct elf_link_hash_entry *h; | |
| 7387 | Elf_Internal_Sym *sym; | |
| 7388 | asection *sym_sec; | |
| 7389 | char *tls_mask; | |
| 7390 | char tls_set, tls_clear, tls_type = 0; | |
| 7391 | bfd_vma value; | |
| 7392 | bfd_boolean ok_tprel, is_local; | |
| 7393 | long toc_ref_index = 0; | |
| 7394 | int expecting_tls_get_addr = 0; | |
| 411e1bfb | 7395 | |
| 102890f0 AM |
7396 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 7397 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
| 7398 | r_symndx, ibfd)) | |
| 7399 | { | |
| 7400 | err_free_rel: | |
| 7401 | if (elf_section_data (sec)->relocs != relstart) | |
| 7402 | free (relstart); | |
| 7403 | if (toc_ref != NULL) | |
| 7404 | free (toc_ref); | |
| 7405 | if (locsyms != NULL | |
| 0ffa91dd | 7406 | && (elf_symtab_hdr (ibfd).contents |
| 102890f0 AM |
7407 | != (unsigned char *) locsyms)) |
| 7408 | free (locsyms); | |
| 7409 | return FALSE; | |
| 7410 | } | |
| 411e1bfb | 7411 | |
| 102890f0 AM |
7412 | if (h != NULL) |
| 7413 | { | |
| 766bc656 AM |
7414 | if (h->root.type == bfd_link_hash_defined |
| 7415 | || h->root.type == bfd_link_hash_defweak) | |
| 7416 | value = h->root.u.def.value; | |
| 7417 | else if (h->root.type == bfd_link_hash_undefweak) | |
| 7418 | value = 0; | |
| 7419 | else | |
| 102890f0 | 7420 | continue; |
| 102890f0 AM |
7421 | } |
| 7422 | else | |
| 7423 | /* Symbols referenced by TLS relocs must be of type | |
| 7424 | STT_TLS. So no need for .opd local sym adjust. */ | |
| 7425 | value = sym->st_value; | |
| 7426 | ||
| 7427 | ok_tprel = FALSE; | |
| 7428 | is_local = FALSE; | |
| 7429 | if (h == NULL | |
| 7430 | || !h->def_dynamic) | |
| 7431 | { | |
| 7432 | is_local = TRUE; | |
| 766bc656 AM |
7433 | if (h != NULL |
| 7434 | && h->root.type == bfd_link_hash_undefweak) | |
| 7435 | ok_tprel = TRUE; | |
| 7436 | else | |
| 7437 | { | |
| 7438 | value += sym_sec->output_offset; | |
| 7439 | value += sym_sec->output_section->vma; | |
| 7440 | value -= htab->elf.tls_sec->vma; | |
| 7441 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
| 7442 | < (bfd_vma) 1 << 32); | |
| 7443 | } | |
| 102890f0 | 7444 | } |
| 951fd09b | 7445 | |
| 102890f0 AM |
7446 | r_type = ELF64_R_TYPE (rel->r_info); |
| 7447 | switch (r_type) | |
| 7448 | { | |
| 7449 | case R_PPC64_GOT_TLSLD16: | |
| 7450 | case R_PPC64_GOT_TLSLD16_LO: | |
| 7451 | expecting_tls_get_addr = 1; | |
| 7452 | /* Fall thru */ | |
| 7453 | ||
| 7454 | case R_PPC64_GOT_TLSLD16_HI: | |
| 7455 | case R_PPC64_GOT_TLSLD16_HA: | |
| 7456 | /* These relocs should never be against a symbol | |
| 7457 | defined in a shared lib. Leave them alone if | |
| 7458 | that turns out to be the case. */ | |
| 7459 | if (!is_local) | |
| 7460 | continue; | |
| 411e1bfb | 7461 | |
| 102890f0 | 7462 | /* LD -> LE */ |
| 411e1bfb | 7463 | tls_set = 0; |
| 102890f0 AM |
7464 | tls_clear = TLS_LD; |
| 7465 | tls_type = TLS_TLS | TLS_LD; | |
| 7466 | break; | |
| 411e1bfb | 7467 | |
| 102890f0 AM |
7468 | case R_PPC64_GOT_TLSGD16: |
| 7469 | case R_PPC64_GOT_TLSGD16_LO: | |
| 7470 | expecting_tls_get_addr = 1; | |
| 7471 | /* Fall thru */ | |
| 7472 | ||
| 7473 | case R_PPC64_GOT_TLSGD16_HI: | |
| 7474 | case R_PPC64_GOT_TLSGD16_HA: | |
| 7475 | if (ok_tprel) | |
| 7476 | /* GD -> LE */ | |
| 411e1bfb | 7477 | tls_set = 0; |
| 102890f0 AM |
7478 | else |
| 7479 | /* GD -> IE */ | |
| 7480 | tls_set = TLS_TLS | TLS_TPRELGD; | |
| 7481 | tls_clear = TLS_GD; | |
| 7482 | tls_type = TLS_TLS | TLS_GD; | |
| 7483 | break; | |
| 7484 | ||
| 7485 | case R_PPC64_GOT_TPREL16_DS: | |
| 7486 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 7487 | case R_PPC64_GOT_TPREL16_HI: | |
| 7488 | case R_PPC64_GOT_TPREL16_HA: | |
| 7489 | if (ok_tprel) | |
| 7490 | { | |
| 7491 | /* IE -> LE */ | |
| 7492 | tls_set = 0; | |
| 7493 | tls_clear = TLS_TPREL; | |
| 7494 | tls_type = TLS_TLS | TLS_TPREL; | |
| 7495 | break; | |
| 7496 | } | |
| 411e1bfb AM |
7497 | continue; |
| 7498 | ||
| 102890f0 AM |
7499 | case R_PPC64_TOC16: |
| 7500 | case R_PPC64_TOC16_LO: | |
| 7501 | case R_PPC64_TLS: | |
| 727fc41e AM |
7502 | case R_PPC64_TLSGD: |
| 7503 | case R_PPC64_TLSLD: | |
| 102890f0 AM |
7504 | if (sym_sec == NULL || sym_sec != toc) |
| 7505 | continue; | |
| 7506 | ||
| 7507 | /* Mark this toc entry as referenced by a TLS | |
| 7508 | code sequence. We can do that now in the | |
| 7509 | case of R_PPC64_TLS, and after checking for | |
| 7510 | tls_get_addr for the TOC16 relocs. */ | |
| 7511 | if (toc_ref == NULL) | |
| 7512 | { | |
| 7513 | toc_ref = bfd_zmalloc (toc->size / 8); | |
| 7514 | if (toc_ref == NULL) | |
| 7515 | goto err_free_rel; | |
| 7516 | } | |
| 7517 | if (h != NULL) | |
| 7518 | value = h->root.u.def.value; | |
| 7519 | else | |
| 7520 | value = sym->st_value; | |
| 7521 | value += rel->r_addend; | |
| 7522 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
| 7523 | toc_ref_index = value / 8; | |
| 727fc41e AM |
7524 | if (r_type == R_PPC64_TLS |
| 7525 | || r_type == R_PPC64_TLSGD | |
| 7526 | || r_type == R_PPC64_TLSLD) | |
| 102890f0 AM |
7527 | { |
| 7528 | toc_ref[toc_ref_index] = 1; | |
| 7529 | continue; | |
| 7530 | } | |
| 7531 | ||
| 7532 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
| 7533 | continue; | |
| 7534 | ||
| 7535 | tls_set = 0; | |
| 7536 | tls_clear = 0; | |
| 7537 | expecting_tls_get_addr = 2; | |
| 7538 | break; | |
| 7539 | ||
| 7540 | case R_PPC64_TPREL64: | |
| 7541 | if (pass == 0 | |
| 7542 | || sec != toc | |
| 7543 | || toc_ref == NULL | |
| 7544 | || !toc_ref[rel->r_offset / 8]) | |
| 7545 | continue; | |
| 7546 | if (ok_tprel) | |
| 7547 | { | |
| 7548 | /* IE -> LE */ | |
| 7549 | tls_set = TLS_EXPLICIT; | |
| 7550 | tls_clear = TLS_TPREL; | |
| 7551 | break; | |
| 7552 | } | |
| 7553 | continue; | |
| 7554 | ||
| 7555 | case R_PPC64_DTPMOD64: | |
| 7556 | if (pass == 0 | |
| 7557 | || sec != toc | |
| 7558 | || toc_ref == NULL | |
| 7559 | || !toc_ref[rel->r_offset / 8]) | |
| 7560 | continue; | |
| 7561 | if (rel + 1 < relend | |
| 7562 | && (rel[1].r_info | |
| 7563 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
| 7564 | && rel[1].r_offset == rel->r_offset + 8) | |
| 7565 | { | |
| 7566 | if (ok_tprel) | |
| 7567 | /* GD -> LE */ | |
| 7568 | tls_set = TLS_EXPLICIT | TLS_GD; | |
| 7569 | else | |
| 7570 | /* GD -> IE */ | |
| 7571 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
| 7572 | tls_clear = TLS_GD; | |
| 7573 | } | |
| 7574 | else | |
| 7575 | { | |
| 7576 | if (!is_local) | |
| 7577 | continue; | |
| 7578 | ||
| 7579 | /* LD -> LE */ | |
| 7580 | tls_set = TLS_EXPLICIT; | |
| 7581 | tls_clear = TLS_LD; | |
| 7582 | } | |
| 7583 | break; | |
| 7584 | ||
| 7585 | default: | |
| 7586 | continue; | |
| 7587 | } | |
| 7588 | ||
| 7589 | if (pass == 0) | |
| 7590 | { | |
| 727fc41e AM |
7591 | if (!expecting_tls_get_addr |
| 7592 | || !sec->has_tls_get_addr_call) | |
| 102890f0 AM |
7593 | continue; |
| 7594 | ||
| 3a71aa26 AM |
7595 | if (rel + 1 < relend |
| 7596 | && branch_reloc_hash_match (ibfd, rel + 1, | |
| 7597 | htab->tls_get_addr, | |
| 7598 | htab->tls_get_addr_fd)) | |
| 102890f0 | 7599 | { |
| 3a71aa26 | 7600 | if (expecting_tls_get_addr == 2) |
| 102890f0 | 7601 | { |
| 3a71aa26 AM |
7602 | /* Check for toc tls entries. */ |
| 7603 | char *toc_tls; | |
| 7604 | int retval; | |
| 7605 | ||
| 7606 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
| 7607 | &locsyms, | |
| 7608 | rel, ibfd); | |
| 7609 | if (retval == 0) | |
| 7610 | goto err_free_rel; | |
| 7611 | if (retval > 1 && toc_tls != NULL) | |
| 7612 | toc_ref[toc_ref_index] = 1; | |
| 102890f0 | 7613 | } |
| 3a71aa26 | 7614 | continue; |
| 102890f0 AM |
7615 | } |
| 7616 | ||
| 7617 | if (expecting_tls_get_addr != 1) | |
| 7618 | continue; | |
| 7619 | ||
| 7620 | /* Uh oh, we didn't find the expected call. We | |
| 7621 | could just mark this symbol to exclude it | |
| 7622 | from tls optimization but it's safer to skip | |
| 7623 | the entire section. */ | |
| 7624 | sec->has_tls_reloc = 0; | |
| 7625 | break; | |
| 7626 | } | |
| 7627 | ||
| 85f7a9cb | 7628 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
| 102890f0 AM |
7629 | { |
| 7630 | struct plt_entry *ent; | |
| 7631 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
| 7632 | ent != NULL; | |
| 7633 | ent = ent->next) | |
| 7634 | if (ent->addend == 0) | |
| 411e1bfb | 7635 | { |
| 102890f0 | 7636 | if (ent->plt.refcount > 0) |
| 30038c59 | 7637 | { |
| 102890f0 AM |
7638 | ent->plt.refcount -= 1; |
| 7639 | expecting_tls_get_addr = 0; | |
| 30038c59 | 7640 | } |
| 102890f0 | 7641 | break; |
| 411e1bfb | 7642 | } |
| 102890f0 | 7643 | } |
| 411e1bfb | 7644 | |
| 85f7a9cb | 7645 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
| 102890f0 AM |
7646 | { |
| 7647 | struct plt_entry *ent; | |
| 7648 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
| 7649 | ent != NULL; | |
| 7650 | ent = ent->next) | |
| 7651 | if (ent->addend == 0) | |
| 411e1bfb | 7652 | { |
| 102890f0 AM |
7653 | if (ent->plt.refcount > 0) |
| 7654 | ent->plt.refcount -= 1; | |
| 7655 | break; | |
| 411e1bfb | 7656 | } |
| 102890f0 | 7657 | } |
| 411e1bfb | 7658 | |
| 102890f0 | 7659 | if (tls_clear == 0) |
| 30038c59 AM |
7660 | continue; |
| 7661 | ||
| 102890f0 AM |
7662 | if ((tls_set & TLS_EXPLICIT) == 0) |
| 7663 | { | |
| 7664 | struct got_entry *ent; | |
| 411e1bfb | 7665 | |
| 102890f0 AM |
7666 | /* Adjust got entry for this reloc. */ |
| 7667 | if (h != NULL) | |
| 7668 | ent = h->got.glist; | |
| 7669 | else | |
| 7670 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
| 411e1bfb | 7671 | |
| 102890f0 AM |
7672 | for (; ent != NULL; ent = ent->next) |
| 7673 | if (ent->addend == rel->r_addend | |
| 7674 | && ent->owner == ibfd | |
| 7675 | && ent->tls_type == tls_type) | |
| 7676 | break; | |
| 7677 | if (ent == NULL) | |
| 7678 | abort (); | |
| 411e1bfb | 7679 | |
| 102890f0 AM |
7680 | if (tls_set == 0) |
| 7681 | { | |
| 7682 | /* We managed to get rid of a got entry. */ | |
| 7683 | if (ent->got.refcount > 0) | |
| 7684 | ent->got.refcount -= 1; | |
| 7685 | } | |
| 7686 | } | |
| 7687 | else | |
| 7688 | { | |
| 7689 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
| 7690 | we'll lose one or two dyn relocs. */ | |
| 7691 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
| 7692 | NULL, h, sym_sec)) | |
| 7693 | return FALSE; | |
| 411e1bfb | 7694 | |
| 102890f0 AM |
7695 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
| 7696 | { | |
| 7697 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
| 7698 | NULL, h, sym_sec)) | |
| 7699 | return FALSE; | |
| 7700 | } | |
| 7701 | } | |
| 411e1bfb | 7702 | |
| 102890f0 AM |
7703 | *tls_mask |= tls_set; |
| 7704 | *tls_mask &= ~tls_clear; | |
| 7705 | } | |
| 8c1d1bb8 | 7706 | |
| 102890f0 AM |
7707 | if (elf_section_data (sec)->relocs != relstart) |
| 7708 | free (relstart); | |
| 7709 | } | |
| 411e1bfb | 7710 | |
| 727fc41e AM |
7711 | if (toc_ref != NULL) |
| 7712 | free (toc_ref); | |
| 411e1bfb | 7713 | |
| 727fc41e AM |
7714 | if (locsyms != NULL |
| 7715 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
| 7716 | { | |
| 7717 | if (!info->keep_memory) | |
| 7718 | free (locsyms); | |
| 7719 | else | |
| 7720 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
| 7721 | } | |
| 7722 | } | |
| b34976b6 | 7723 | return TRUE; |
| 1e2f5b6e | 7724 | } |
| b34976b6 | 7725 | |
| c5614fa4 AM |
7726 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
| 7727 | the values of any global symbols in a toc section that has been | |
| 7728 | edited. Globals in toc sections should be a rarity, so this function | |
| 7729 | sets a flag if any are found in toc sections other than the one just | |
| 7730 | edited, so that futher hash table traversals can be avoided. */ | |
| 7731 | ||
| 7732 | struct adjust_toc_info | |
| 7733 | { | |
| 7734 | asection *toc; | |
| 7735 | unsigned long *skip; | |
| 7736 | bfd_boolean global_toc_syms; | |
| 7737 | }; | |
| 7738 | ||
| 7739 | static bfd_boolean | |
| 7740 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
| 7741 | { | |
| 7742 | struct ppc_link_hash_entry *eh; | |
| 7743 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
| 7744 | ||
| 7745 | if (h->root.type == bfd_link_hash_indirect) | |
| 7746 | return TRUE; | |
| 7747 | ||
| 7748 | if (h->root.type == bfd_link_hash_warning) | |
| 7749 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 7750 | ||
| 7751 | if (h->root.type != bfd_link_hash_defined | |
| 7752 | && h->root.type != bfd_link_hash_defweak) | |
| 7753 | return TRUE; | |
| 7754 | ||
| 7755 | eh = (struct ppc_link_hash_entry *) h; | |
| 7756 | if (eh->adjust_done) | |
| 7757 | return TRUE; | |
| 7758 | ||
| 7759 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
| 7760 | { | |
| 7761 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
| 7762 | if (skip != (unsigned long) -1) | |
| 7763 | eh->elf.root.u.def.value -= skip; | |
| 7764 | else | |
| 7765 | { | |
| 7766 | (*_bfd_error_handler) | |
| 7767 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
| 7768 | eh->elf.root.u.def.section = &bfd_abs_section; | |
| 7769 | eh->elf.root.u.def.value = 0; | |
| 7770 | } | |
| 7771 | eh->adjust_done = 1; | |
| 7772 | } | |
| 7773 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
| 7774 | toc_inf->global_toc_syms = TRUE; | |
| 7775 | ||
| 7776 | return TRUE; | |
| 7777 | } | |
| 7778 | ||
| 7779 | /* Examine all relocs referencing .toc sections in order to remove | |
| 7780 | unused .toc entries. */ | |
| 7781 | ||
| 7782 | bfd_boolean | |
| 7783 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
| 7784 | { | |
| 7785 | bfd *ibfd; | |
| 7786 | struct adjust_toc_info toc_inf; | |
| 7787 | ||
| 7788 | toc_inf.global_toc_syms = TRUE; | |
| 7789 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 7790 | { | |
| 7791 | asection *toc, *sec; | |
| 7792 | Elf_Internal_Shdr *symtab_hdr; | |
| 7793 | Elf_Internal_Sym *local_syms; | |
| 7794 | struct elf_link_hash_entry **sym_hashes; | |
| 92b7a70f | 7795 | Elf_Internal_Rela *relstart, *rel; |
| c5614fa4 AM |
7796 | unsigned long *skip, *drop; |
| 7797 | unsigned char *used; | |
| 7798 | unsigned char *keep, last, some_unused; | |
| 7799 | ||
| 7800 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
| 7801 | if (toc == NULL | |
| 92b7a70f | 7802 | || toc->size == 0 |
| c5614fa4 AM |
7803 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
| 7804 | || elf_discarded_section (toc)) | |
| 7805 | continue; | |
| 7806 | ||
| 7807 | local_syms = NULL; | |
| 0ffa91dd | 7808 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| c5614fa4 AM |
7809 | sym_hashes = elf_sym_hashes (ibfd); |
| 7810 | ||
| 7811 | /* Look at sections dropped from the final link. */ | |
| 7812 | skip = NULL; | |
| 7813 | relstart = NULL; | |
| 7814 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
| 7815 | { | |
| 7816 | if (sec->reloc_count == 0 | |
| 7817 | || !elf_discarded_section (sec) | |
| 7818 | || get_opd_info (sec) | |
| 7819 | || (sec->flags & SEC_ALLOC) == 0 | |
| 7820 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 7821 | continue; | |
| 7822 | ||
| 7823 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
| 7824 | if (relstart == NULL) | |
| 7825 | goto error_ret; | |
| 7826 | ||
| 7827 | /* Run through the relocs to see which toc entries might be | |
| 7828 | unused. */ | |
| 7829 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 7830 | { | |
| 7831 | enum elf_ppc64_reloc_type r_type; | |
| 7832 | unsigned long r_symndx; | |
| 7833 | asection *sym_sec; | |
| 7834 | struct elf_link_hash_entry *h; | |
| 7835 | Elf_Internal_Sym *sym; | |
| 7836 | bfd_vma val; | |
| 7837 | ||
| 7838 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 7839 | switch (r_type) | |
| 7840 | { | |
| 7841 | default: | |
| 7842 | continue; | |
| 7843 | ||
| 7844 | case R_PPC64_TOC16: | |
| 7845 | case R_PPC64_TOC16_LO: | |
| 7846 | case R_PPC64_TOC16_HI: | |
| 7847 | case R_PPC64_TOC16_HA: | |
| 7848 | case R_PPC64_TOC16_DS: | |
| 7849 | case R_PPC64_TOC16_LO_DS: | |
| 7850 | break; | |
| 7851 | } | |
| 7852 | ||
| 7853 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7854 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 7855 | r_symndx, ibfd)) | |
| 7856 | goto error_ret; | |
| 7857 | ||
| 7858 | if (sym_sec != toc) | |
| 7859 | continue; | |
| 7860 | ||
| 7861 | if (h != NULL) | |
| 7862 | val = h->root.u.def.value; | |
| 7863 | else | |
| 7864 | val = sym->st_value; | |
| 7865 | val += rel->r_addend; | |
| 7866 | ||
| 7867 | if (val >= toc->size) | |
| 7868 | continue; | |
| 7869 | ||
| 7870 | /* Anything in the toc ought to be aligned to 8 bytes. | |
| 7871 | If not, don't mark as unused. */ | |
| 7872 | if (val & 7) | |
| 7873 | continue; | |
| 7874 | ||
| 7875 | if (skip == NULL) | |
| 7876 | { | |
| 7877 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
| 7878 | if (skip == NULL) | |
| 7879 | goto error_ret; | |
| 7880 | } | |
| 7881 | ||
| 7882 | skip[val >> 3] = 1; | |
| 7883 | } | |
| 7884 | ||
| 7885 | if (elf_section_data (sec)->relocs != relstart) | |
| 7886 | free (relstart); | |
| 7887 | } | |
| 7888 | ||
| 7889 | if (skip == NULL) | |
| 7890 | continue; | |
| 7891 | ||
| 7892 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
| 7893 | if (used == NULL) | |
| 7894 | { | |
| 7895 | error_ret: | |
| 7896 | if (local_syms != NULL | |
| 7897 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 7898 | free (local_syms); | |
| 7899 | if (sec != NULL | |
| 7900 | && relstart != NULL | |
| 7901 | && elf_section_data (sec)->relocs != relstart) | |
| 7902 | free (relstart); | |
| 7903 | if (skip != NULL) | |
| 7904 | free (skip); | |
| 7905 | return FALSE; | |
| 7906 | } | |
| 7907 | ||
| 30038c59 AM |
7908 | /* Now check all kept sections that might reference the toc. |
| 7909 | Check the toc itself last. */ | |
| 7910 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
| 7911 | : ibfd->sections); | |
| c5614fa4 | 7912 | sec != NULL; |
| c5614fa4 | 7913 | sec = (sec == toc ? NULL |
| c5614fa4 | 7914 | : sec->next == NULL ? toc |
| 30038c59 | 7915 | : sec->next == toc && toc->next ? toc->next |
| c5614fa4 AM |
7916 | : sec->next)) |
| 7917 | { | |
| 7918 | int repeat; | |
| 7919 | ||
| 7920 | if (sec->reloc_count == 0 | |
| 7921 | || elf_discarded_section (sec) | |
| 7922 | || get_opd_info (sec) | |
| 7923 | || (sec->flags & SEC_ALLOC) == 0 | |
| 7924 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 7925 | continue; | |
| 7926 | ||
| 7927 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
| 7928 | if (relstart == NULL) | |
| 7929 | goto error_ret; | |
| 7930 | ||
| 7931 | /* Mark toc entries referenced as used. */ | |
| 7932 | repeat = 0; | |
| 7933 | do | |
| 7934 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 7935 | { | |
| 7936 | enum elf_ppc64_reloc_type r_type; | |
| 7937 | unsigned long r_symndx; | |
| 7938 | asection *sym_sec; | |
| 7939 | struct elf_link_hash_entry *h; | |
| 7940 | Elf_Internal_Sym *sym; | |
| 7941 | bfd_vma val; | |
| 7942 | ||
| 7943 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 7944 | switch (r_type) | |
| 7945 | { | |
| 7946 | case R_PPC64_TOC16: | |
| 7947 | case R_PPC64_TOC16_LO: | |
| 7948 | case R_PPC64_TOC16_HI: | |
| 7949 | case R_PPC64_TOC16_HA: | |
| 7950 | case R_PPC64_TOC16_DS: | |
| 7951 | case R_PPC64_TOC16_LO_DS: | |
| 7952 | /* In case we're taking addresses of toc entries. */ | |
| 7953 | case R_PPC64_ADDR64: | |
| 7954 | break; | |
| 7955 | ||
| 7956 | default: | |
| 7957 | continue; | |
| 7958 | } | |
| 7959 | ||
| 7960 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7961 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 7962 | r_symndx, ibfd)) | |
| 7963 | { | |
| 7964 | free (used); | |
| 7965 | goto error_ret; | |
| 7966 | } | |
| 7967 | ||
| 7968 | if (sym_sec != toc) | |
| 7969 | continue; | |
| 7970 | ||
| 7971 | if (h != NULL) | |
| 7972 | val = h->root.u.def.value; | |
| 7973 | else | |
| 7974 | val = sym->st_value; | |
| 7975 | val += rel->r_addend; | |
| 7976 | ||
| 7977 | if (val >= toc->size) | |
| 7978 | continue; | |
| 7979 | ||
| 7980 | /* For the toc section, we only mark as used if | |
| 7981 | this entry itself isn't unused. */ | |
| 7982 | if (sec == toc | |
| 7983 | && !used[val >> 3] | |
| 7984 | && (used[rel->r_offset >> 3] | |
| 7985 | || !skip[rel->r_offset >> 3])) | |
| 7986 | /* Do all the relocs again, to catch reference | |
| 7987 | chains. */ | |
| 7988 | repeat = 1; | |
| 7989 | ||
| 7990 | used[val >> 3] = 1; | |
| 7991 | } | |
| 7992 | while (repeat); | |
| 7993 | } | |
| 7994 | ||
| 7995 | /* Merge the used and skip arrays. Assume that TOC | |
| 7996 | doublewords not appearing as either used or unused belong | |
| 7997 | to to an entry more than one doubleword in size. */ | |
| 7998 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
| 7999 | drop < skip + (toc->size + 7) / 8; | |
| 8000 | ++drop, ++keep) | |
| 8001 | { | |
| 8002 | if (*keep) | |
| 8003 | { | |
| 8004 | *drop = 0; | |
| 8005 | last = 0; | |
| 8006 | } | |
| 8007 | else if (*drop) | |
| 8008 | { | |
| 8009 | some_unused = 1; | |
| 8010 | last = 1; | |
| 8011 | } | |
| 8012 | else | |
| 8013 | *drop = last; | |
| 8014 | } | |
| 8015 | ||
| 8016 | free (used); | |
| 8017 | ||
| 8018 | if (some_unused) | |
| 8019 | { | |
| 8020 | bfd_byte *contents, *src; | |
| 8021 | unsigned long off; | |
| 8022 | ||
| 8023 | /* Shuffle the toc contents, and at the same time convert the | |
| 8024 | skip array from booleans into offsets. */ | |
| 8025 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
| 8026 | goto error_ret; | |
| 8027 | ||
| 8028 | elf_section_data (toc)->this_hdr.contents = contents; | |
| 8029 | ||
| 8030 | for (src = contents, off = 0, drop = skip; | |
| 8031 | src < contents + toc->size; | |
| 8032 | src += 8, ++drop) | |
| 8033 | { | |
| 8034 | if (*drop) | |
| 8035 | { | |
| 8036 | *drop = (unsigned long) -1; | |
| 8037 | off += 8; | |
| 8038 | } | |
| 8039 | else if (off != 0) | |
| 8040 | { | |
| 8041 | *drop = off; | |
| 8042 | memcpy (src - off, src, 8); | |
| 8043 | } | |
| 8044 | } | |
| 8045 | toc->rawsize = toc->size; | |
| 8046 | toc->size = src - contents - off; | |
| 8047 | ||
| 92b7a70f AM |
8048 | if (toc->reloc_count != 0) |
| 8049 | { | |
| 8050 | Elf_Internal_Rela *wrel; | |
| 8051 | bfd_size_type sz; | |
| c5614fa4 | 8052 | |
| 92b7a70f AM |
8053 | /* Read toc relocs. */ |
| 8054 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
| 8055 | TRUE); | |
| 8056 | if (relstart == NULL) | |
| 8057 | goto error_ret; | |
| 8058 | ||
| 8059 | /* Remove unused toc relocs, and adjust those we keep. */ | |
| 8060 | wrel = relstart; | |
| 8061 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
| 8062 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
| 8063 | { | |
| 8064 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
| 8065 | wrel->r_info = rel->r_info; | |
| 8066 | wrel->r_addend = rel->r_addend; | |
| 8067 | ++wrel; | |
| 8068 | } | |
| 8c1d1bb8 AM |
8069 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
| 8070 | &local_syms, NULL, NULL)) | |
| 8071 | goto error_ret; | |
| 35090471 | 8072 | |
| 92b7a70f AM |
8073 | toc->reloc_count = wrel - relstart; |
| 8074 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
| 8075 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
| 8076 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
| 8077 | } | |
| c5614fa4 AM |
8078 | |
| 8079 | /* Adjust addends for relocs against the toc section sym. */ | |
| 8080 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
| 8081 | { | |
| 8082 | if (sec->reloc_count == 0 | |
| 8083 | || elf_discarded_section (sec)) | |
| 8084 | continue; | |
| 8085 | ||
| 8086 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 8087 | TRUE); | |
| 8088 | if (relstart == NULL) | |
| 8089 | goto error_ret; | |
| 8090 | ||
| 8091 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 8092 | { | |
| 8093 | enum elf_ppc64_reloc_type r_type; | |
| 8094 | unsigned long r_symndx; | |
| 8095 | asection *sym_sec; | |
| 8096 | struct elf_link_hash_entry *h; | |
| 8097 | Elf_Internal_Sym *sym; | |
| 8098 | ||
| 8099 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 8100 | switch (r_type) | |
| 8101 | { | |
| 8102 | default: | |
| 8103 | continue; | |
| 8104 | ||
| 8105 | case R_PPC64_TOC16: | |
| 8106 | case R_PPC64_TOC16_LO: | |
| 8107 | case R_PPC64_TOC16_HI: | |
| 8108 | case R_PPC64_TOC16_HA: | |
| 8109 | case R_PPC64_TOC16_DS: | |
| 8110 | case R_PPC64_TOC16_LO_DS: | |
| 8111 | case R_PPC64_ADDR64: | |
| 8112 | break; | |
| 8113 | } | |
| 8114 | ||
| 8115 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8116 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8117 | r_symndx, ibfd)) | |
| 8118 | goto error_ret; | |
| 8119 | ||
| 8120 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
| 8121 | continue; | |
| 8122 | ||
| 8123 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
| 8124 | } | |
| 8125 | } | |
| 8126 | ||
| 8127 | /* We shouldn't have local or global symbols defined in the TOC, | |
| 8128 | but handle them anyway. */ | |
| 8129 | if (local_syms != NULL) | |
| 8130 | { | |
| 8131 | Elf_Internal_Sym *sym; | |
| 8132 | ||
| 8133 | for (sym = local_syms; | |
| 8134 | sym < local_syms + symtab_hdr->sh_info; | |
| 8135 | ++sym) | |
| cb33740c | 8136 | if (sym->st_value != 0 |
| c5614fa4 AM |
8137 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) |
| 8138 | { | |
| 8139 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
| 8140 | sym->st_value -= skip[sym->st_value >> 3]; | |
| 8141 | else | |
| 8142 | { | |
| 8143 | (*_bfd_error_handler) | |
| 8144 | (_("%s defined in removed toc entry"), | |
| 26c61ae5 L |
8145 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
| 8146 | NULL)); | |
| c5614fa4 AM |
8147 | sym->st_value = 0; |
| 8148 | sym->st_shndx = SHN_ABS; | |
| 8149 | } | |
| 8150 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 8151 | } | |
| 8152 | } | |
| 8153 | ||
| 8154 | /* Finally, adjust any global syms defined in the toc. */ | |
| 8155 | if (toc_inf.global_toc_syms) | |
| 8156 | { | |
| 8157 | toc_inf.toc = toc; | |
| 8158 | toc_inf.skip = skip; | |
| 8159 | toc_inf.global_toc_syms = FALSE; | |
| 8160 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
| 8161 | &toc_inf); | |
| 8162 | } | |
| 8163 | } | |
| 8164 | ||
| 8165 | if (local_syms != NULL | |
| 8166 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 8167 | { | |
| 8168 | if (!info->keep_memory) | |
| 8169 | free (local_syms); | |
| 8170 | else | |
| 8171 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 8172 | } | |
| 8173 | free (skip); | |
| 8174 | } | |
| 8175 | ||
| 8176 | return TRUE; | |
| 8177 | } | |
| 8178 | ||
| 65f38f15 AM |
8179 | /* Allocate space in .plt, .got and associated reloc sections for |
| 8180 | dynamic relocs. */ | |
| 5bd4f169 | 8181 | |
| b34976b6 | 8182 | static bfd_boolean |
| 4ce794b7 | 8183 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 8184 | { |
| 65f38f15 AM |
8185 | struct bfd_link_info *info; |
| 8186 | struct ppc_link_hash_table *htab; | |
| 5bd4f169 | 8187 | asection *s; |
| 65f38f15 AM |
8188 | struct ppc_link_hash_entry *eh; |
| 8189 | struct ppc_dyn_relocs *p; | |
| 411e1bfb | 8190 | struct got_entry *gent; |
| 5bd4f169 | 8191 | |
| e92d460e | 8192 | if (h->root.type == bfd_link_hash_indirect) |
| b34976b6 | 8193 | return TRUE; |
| 5bd4f169 | 8194 | |
| e92d460e AM |
8195 | if (h->root.type == bfd_link_hash_warning) |
| 8196 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 8197 | ||
| 65f38f15 AM |
8198 | info = (struct bfd_link_info *) inf; |
| 8199 | htab = ppc_hash_table (info); | |
| 5bd4f169 | 8200 | |
| e054468f AM |
8201 | if ((htab->elf.dynamic_sections_created |
| 8202 | && h->dynindx != -1 | |
| 8203 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
| 8204 | || h->type == STT_GNU_IFUNC) | |
| 5bd4f169 | 8205 | { |
| 411e1bfb AM |
8206 | struct plt_entry *pent; |
| 8207 | bfd_boolean doneone = FALSE; | |
| 8208 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 8209 | if (pent->plt.refcount > 0) | |
| 8210 | { | |
| 25f23106 AM |
8211 | if (!htab->elf.dynamic_sections_created |
| 8212 | || h->dynindx == -1) | |
| e054468f AM |
8213 | { |
| 8214 | s = htab->iplt; | |
| 8215 | pent->plt.offset = s->size; | |
| 8216 | s->size += PLT_ENTRY_SIZE; | |
| 8217 | s = htab->reliplt; | |
| 8218 | } | |
| 8219 | else | |
| 8220 | { | |
| 8221 | /* If this is the first .plt entry, make room for the special | |
| 8222 | first entry. */ | |
| 8223 | s = htab->plt; | |
| 8224 | if (s->size == 0) | |
| 8225 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
| 8226 | ||
| 8227 | pent->plt.offset = s->size; | |
| 8228 | ||
| 8229 | /* Make room for this entry. */ | |
| 8230 | s->size += PLT_ENTRY_SIZE; | |
| 8231 | ||
| 8232 | /* Make room for the .glink code. */ | |
| 8233 | s = htab->glink; | |
| 8234 | if (s->size == 0) | |
| 8235 | s->size += GLINK_CALL_STUB_SIZE; | |
| 8236 | /* We need bigger stubs past index 32767. */ | |
| 8237 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
| 8238 | s->size += 4; | |
| 8239 | s->size += 2*4; | |
| 8240 | ||
| 8241 | /* We also need to make an entry in the .rela.plt section. */ | |
| 8242 | s = htab->relplt; | |
| 8243 | } | |
| eea6121a | 8244 | s->size += sizeof (Elf64_External_Rela); |
| 411e1bfb AM |
8245 | doneone = TRUE; |
| 8246 | } | |
| 8247 | else | |
| 8248 | pent->plt.offset = (bfd_vma) -1; | |
| 8249 | if (!doneone) | |
| 65f38f15 | 8250 | { |
| 411e1bfb | 8251 | h->plt.plist = NULL; |
| f5385ebf | 8252 | h->needs_plt = 0; |
| 65f38f15 AM |
8253 | } |
| 8254 | } | |
| 8255 | else | |
| 8256 | { | |
| 411e1bfb | 8257 | h->plt.plist = NULL; |
| f5385ebf | 8258 | h->needs_plt = 0; |
| 65f38f15 AM |
8259 | } |
| 8260 | ||
| 951fd09b AM |
8261 | eh = (struct ppc_link_hash_entry *) h; |
| 8262 | /* Run through the TLS GD got entries first if we're changing them | |
| 8263 | to TPREL. */ | |
| e7b938ca | 8264 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
| 951fd09b AM |
8265 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 8266 | if (gent->got.refcount > 0 | |
| 8267 | && (gent->tls_type & TLS_GD) != 0) | |
| 8268 | { | |
| 8269 | /* This was a GD entry that has been converted to TPREL. If | |
| 8270 | there happens to be a TPREL entry we can use that one. */ | |
| 8271 | struct got_entry *ent; | |
| 8272 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
| 8273 | if (ent->got.refcount > 0 | |
| 8274 | && (ent->tls_type & TLS_TPREL) != 0 | |
| e717da7e AM |
8275 | && ent->addend == gent->addend |
| 8276 | && ent->owner == gent->owner) | |
| 951fd09b AM |
8277 | { |
| 8278 | gent->got.refcount = 0; | |
| 8279 | break; | |
| 8280 | } | |
| 8281 | ||
| 8282 | /* If not, then we'll be using our own TPREL entry. */ | |
| 8283 | if (gent->got.refcount != 0) | |
| 8284 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
| 8285 | } | |
| 8286 | ||
| 411e1bfb AM |
8287 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 8288 | if (gent->got.refcount > 0) | |
| 8289 | { | |
| 951fd09b | 8290 | bfd_boolean dyn; |
| 25f23106 | 8291 | asection *rsec; |
| 951fd09b | 8292 | |
| 411e1bfb | 8293 | /* Make sure this symbol is output as a dynamic symbol. |
| 951fd09b AM |
8294 | Undefined weak syms won't yet be marked as dynamic, |
| 8295 | nor will all TLS symbols. */ | |
| 411e1bfb | 8296 | if (h->dynindx == -1 |
| b099ab9f | 8297 | && !h->forced_local |
| 25f23106 | 8298 | && h->type != STT_GNU_IFUNC |
| b099ab9f | 8299 | && htab->elf.dynamic_sections_created) |
| 411e1bfb | 8300 | { |
| c152c796 | 8301 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 411e1bfb AM |
8302 | return FALSE; |
| 8303 | } | |
| 65f38f15 | 8304 | |
| d881513a | 8305 | if ((gent->tls_type & TLS_LD) != 0 |
| f5385ebf | 8306 | && !h->def_dynamic) |
| 411e1bfb | 8307 | { |
| 102890f0 AM |
8308 | ppc64_tlsld_got (gent->owner)->refcount += 1; |
| 8309 | gent->got.offset = (bfd_vma) -1; | |
| 951fd09b | 8310 | continue; |
| 411e1bfb | 8311 | } |
| 951fd09b | 8312 | |
| 0c8d6e5c | 8313 | if (!is_ppc64_elf (gent->owner)) |
| 0ffa91dd NC |
8314 | continue; |
| 8315 | ||
| e717da7e | 8316 | s = ppc64_elf_tdata (gent->owner)->got; |
| eea6121a AM |
8317 | gent->got.offset = s->size; |
| 8318 | s->size | |
| d881513a | 8319 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
| 951fd09b | 8320 | dyn = htab->elf.dynamic_sections_created; |
| 25f23106 | 8321 | rsec = NULL; |
| 4e795f50 AM |
8322 | if ((info->shared |
| 8323 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
| 8324 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
| 8325 | || h->root.type != bfd_link_hash_undefweak)) | |
| 25f23106 AM |
8326 | rsec = ppc64_elf_tdata (gent->owner)->relgot; |
| 8327 | else if (h->type == STT_GNU_IFUNC) | |
| 8328 | rsec = htab->reliplt; | |
| 8329 | if (rsec != NULL) | |
| 8330 | rsec->size += (gent->tls_type & eh->tls_mask & TLS_GD | |
| 8331 | ? 2 * sizeof (Elf64_External_Rela) | |
| 8332 | : sizeof (Elf64_External_Rela)); | |
| 411e1bfb AM |
8333 | } |
| 8334 | else | |
| 8335 | gent->got.offset = (bfd_vma) -1; | |
| 65f38f15 | 8336 | |
| b099ab9f | 8337 | if (eh->dyn_relocs == NULL |
| 25f23106 AM |
8338 | || (!htab->elf.dynamic_sections_created |
| 8339 | && h->type != STT_GNU_IFUNC)) | |
| b34976b6 | 8340 | return TRUE; |
| 65f38f15 AM |
8341 | |
| 8342 | /* In the shared -Bsymbolic case, discard space allocated for | |
| 8343 | dynamic pc-relative relocs against symbols which turn out to be | |
| 8344 | defined in regular objects. For the normal shared case, discard | |
| 8345 | space for relocs that have become local due to symbol visibility | |
| 8346 | changes. */ | |
| 8347 | ||
| 8348 | if (info->shared) | |
| 8349 | { | |
| 9c7a29a3 | 8350 | /* Relocs that use pc_count are those that appear on a call insn, |
| 1d483afe | 8351 | or certain REL relocs (see must_be_dyn_reloc) that can be |
| 9c7a29a3 AM |
8352 | generated via assembly. We want calls to protected symbols to |
| 8353 | resolve directly to the function rather than going via the plt. | |
| 8354 | If people want function pointer comparisons to work as expected | |
| 8355 | then they should avoid writing weird assembly. */ | |
| 09695f56 | 8356 | if (SYMBOL_CALLS_LOCAL (info, h)) |
| 65f38f15 AM |
8357 | { |
| 8358 | struct ppc_dyn_relocs **pp; | |
| 8359 | ||
| 8360 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
| 5bd4f169 | 8361 | { |
| 65f38f15 AM |
8362 | p->count -= p->pc_count; |
| 8363 | p->pc_count = 0; | |
| 8364 | if (p->count == 0) | |
| 8365 | *pp = p->next; | |
| 8366 | else | |
| 8367 | pp = &p->next; | |
| 5bd4f169 | 8368 | } |
| 65f38f15 | 8369 | } |
| 4e795f50 AM |
8370 | |
| 8371 | /* Also discard relocs on undefined weak syms with non-default | |
| 8372 | visibility. */ | |
| cab87ef9 AM |
8373 | if (eh->dyn_relocs != NULL |
| 8374 | && h->root.type == bfd_link_hash_undefweak) | |
| dfbb6ac9 AM |
8375 | { |
| 8376 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
| 8377 | eh->dyn_relocs = NULL; | |
| 8378 | ||
| 8379 | /* Make sure this symbol is output as a dynamic symbol. | |
| 8380 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 8381 | else if (h->dynindx == -1 | |
| 8382 | && !h->forced_local) | |
| 8383 | { | |
| 8384 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
| 8385 | return FALSE; | |
| 8386 | } | |
| 8387 | } | |
| 65f38f15 | 8388 | } |
| 25f23106 AM |
8389 | else if (h->type == STT_GNU_IFUNC) |
| 8390 | { | |
| 8391 | if (!h->non_got_ref) | |
| 8392 | eh->dyn_relocs = NULL; | |
| 8393 | } | |
| f4656909 | 8394 | else if (ELIMINATE_COPY_RELOCS) |
| 65f38f15 AM |
8395 | { |
| 8396 | /* For the non-shared case, discard space for relocs against | |
| 8397 | symbols which turn out to need copy relocs or are not | |
| 8398 | dynamic. */ | |
| 8399 | ||
| f5385ebf | 8400 | if (!h->non_got_ref |
| f5385ebf | 8401 | && !h->def_regular) |
| 65f38f15 AM |
8402 | { |
| 8403 | /* Make sure this symbol is output as a dynamic symbol. | |
| 8404 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 8405 | if (h->dynindx == -1 | |
| f5385ebf | 8406 | && !h->forced_local) |
| 65f38f15 | 8407 | { |
| c152c796 | 8408 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| b34976b6 | 8409 | return FALSE; |
| 65f38f15 AM |
8410 | } |
| 8411 | ||
| 8412 | /* If that succeeded, we know we'll be keeping all the | |
| 8413 | relocs. */ | |
| 8414 | if (h->dynindx != -1) | |
| 8415 | goto keep; | |
| 8416 | } | |
| 8417 | ||
| 8418 | eh->dyn_relocs = NULL; | |
| 8419 | ||
| ec338859 | 8420 | keep: ; |
| 65f38f15 AM |
8421 | } |
| 8422 | ||
| 8423 | /* Finally, allocate space. */ | |
| 8424 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 8425 | { | |
| 8426 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
| 25f23106 AM |
8427 | if (!htab->elf.dynamic_sections_created) |
| 8428 | sreloc = htab->reliplt; | |
| eea6121a | 8429 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
| 65f38f15 AM |
8430 | } |
| 8431 | ||
| b34976b6 | 8432 | return TRUE; |
| 65f38f15 AM |
8433 | } |
| 8434 | ||
| 8435 | /* Find any dynamic relocs that apply to read-only sections. */ | |
| 8436 | ||
| b34976b6 | 8437 | static bfd_boolean |
| 4ce794b7 | 8438 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 65f38f15 AM |
8439 | { |
| 8440 | struct ppc_link_hash_entry *eh; | |
| 8441 | struct ppc_dyn_relocs *p; | |
| 8442 | ||
| e92d460e AM |
8443 | if (h->root.type == bfd_link_hash_warning) |
| 8444 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 8445 | ||
| 65f38f15 AM |
8446 | eh = (struct ppc_link_hash_entry *) h; |
| 8447 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 8448 | { | |
| 8449 | asection *s = p->sec->output_section; | |
| 8450 | ||
| 8451 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 8452 | { | |
| 4ce794b7 | 8453 | struct bfd_link_info *info = inf; |
| 65f38f15 AM |
8454 | |
| 8455 | info->flags |= DF_TEXTREL; | |
| 8456 | ||
| 8457 | /* Not an error, just cut short the traversal. */ | |
| b34976b6 | 8458 | return FALSE; |
| 65f38f15 AM |
8459 | } |
| 8460 | } | |
| b34976b6 | 8461 | return TRUE; |
| 65f38f15 AM |
8462 | } |
| 8463 | ||
| 8464 | /* Set the sizes of the dynamic sections. */ | |
| 8465 | ||
| b34976b6 | 8466 | static bfd_boolean |
| 4ce794b7 AM |
8467 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 8468 | struct bfd_link_info *info) | |
| 65f38f15 AM |
8469 | { |
| 8470 | struct ppc_link_hash_table *htab; | |
| 8471 | bfd *dynobj; | |
| 8472 | asection *s; | |
| b34976b6 | 8473 | bfd_boolean relocs; |
| 65f38f15 AM |
8474 | bfd *ibfd; |
| 8475 | ||
| 8476 | htab = ppc_hash_table (info); | |
| 8477 | dynobj = htab->elf.dynobj; | |
| 8478 | if (dynobj == NULL) | |
| 8479 | abort (); | |
| 8480 | ||
| 8481 | if (htab->elf.dynamic_sections_created) | |
| 8482 | { | |
| 8483 | /* Set the contents of the .interp section to the interpreter. */ | |
| 36af4a4e | 8484 | if (info->executable) |
| 65f38f15 AM |
8485 | { |
| 8486 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
| 8487 | if (s == NULL) | |
| 8488 | abort (); | |
| eea6121a | 8489 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 65f38f15 AM |
8490 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 8491 | } | |
| 8492 | } | |
| 8493 | ||
| 8494 | /* Set up .got offsets for local syms, and space for local dynamic | |
| 8495 | relocs. */ | |
| 8496 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 8497 | { | |
| 411e1bfb AM |
8498 | struct got_entry **lgot_ents; |
| 8499 | struct got_entry **end_lgot_ents; | |
| e054468f AM |
8500 | struct plt_entry **local_plt; |
| 8501 | struct plt_entry **end_local_plt; | |
| e7b938ca | 8502 | char *lgot_masks; |
| 65f38f15 AM |
8503 | bfd_size_type locsymcount; |
| 8504 | Elf_Internal_Shdr *symtab_hdr; | |
| 8505 | asection *srel; | |
| 8506 | ||
| 0c8d6e5c | 8507 | if (!is_ppc64_elf (ibfd)) |
| 65f38f15 AM |
8508 | continue; |
| 8509 | ||
| 8510 | for (s = ibfd->sections; s != NULL; s = s->next) | |
| 8511 | { | |
| ec338859 | 8512 | struct ppc_dyn_relocs *p; |
| 65f38f15 | 8513 | |
| 6edfbbad | 8514 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
| 65f38f15 | 8515 | { |
| ec338859 AM |
8516 | if (!bfd_is_abs_section (p->sec) |
| 8517 | && bfd_is_abs_section (p->sec->output_section)) | |
| 8518 | { | |
| 8519 | /* Input section has been discarded, either because | |
| 8520 | it is a copy of a linkonce section or due to | |
| 8521 | linker script /DISCARD/, so we'll be discarding | |
| 8522 | the relocs too. */ | |
| 8523 | } | |
| 248866a8 | 8524 | else if (p->count != 0) |
| ec338859 AM |
8525 | { |
| 8526 | srel = elf_section_data (p->sec)->sreloc; | |
| 25f23106 AM |
8527 | if (!htab->elf.dynamic_sections_created) |
| 8528 | srel = htab->reliplt; | |
| eea6121a | 8529 | srel->size += p->count * sizeof (Elf64_External_Rela); |
| 248866a8 AM |
8530 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 8531 | info->flags |= DF_TEXTREL; | |
| ec338859 | 8532 | } |
| 65f38f15 AM |
8533 | } |
| 8534 | } | |
| 8535 | ||
| 411e1bfb AM |
8536 | lgot_ents = elf_local_got_ents (ibfd); |
| 8537 | if (!lgot_ents) | |
| 65f38f15 AM |
8538 | continue; |
| 8539 | ||
| 0ffa91dd | 8540 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 65f38f15 | 8541 | locsymcount = symtab_hdr->sh_info; |
| 411e1bfb | 8542 | end_lgot_ents = lgot_ents + locsymcount; |
| e054468f AM |
8543 | local_plt = (struct plt_entry **) end_lgot_ents; |
| 8544 | end_local_plt = local_plt + locsymcount; | |
| 8545 | lgot_masks = (char *) end_local_plt; | |
| e717da7e AM |
8546 | s = ppc64_elf_tdata (ibfd)->got; |
| 8547 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
| e7b938ca | 8548 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
| 65f38f15 | 8549 | { |
| 411e1bfb AM |
8550 | struct got_entry *ent; |
| 8551 | ||
| 8552 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
| 8553 | if (ent->got.refcount > 0) | |
| 8554 | { | |
| e7b938ca | 8555 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
| 411e1bfb | 8556 | { |
| 102890f0 AM |
8557 | ppc64_tlsld_got (ibfd)->refcount += 1; |
| 8558 | ent->got.offset = (bfd_vma) -1; | |
| 411e1bfb AM |
8559 | } |
| 8560 | else | |
| 8561 | { | |
| 25f23106 | 8562 | unsigned int num = 1; |
| eea6121a | 8563 | ent->got.offset = s->size; |
| e7b938ca | 8564 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
| 25f23106 AM |
8565 | num = 2; |
| 8566 | s->size += num * 8; | |
| 8567 | if (info->shared) | |
| 8568 | srel->size += num * sizeof (Elf64_External_Rela); | |
| 8569 | else if ((*lgot_masks & PLT_IFUNC) != 0) | |
| 8570 | htab->reliplt->size += num * sizeof (Elf64_External_Rela); | |
| 411e1bfb AM |
8571 | } |
| 8572 | } | |
| 8573 | else | |
| 8574 | ent->got.offset = (bfd_vma) -1; | |
| 65f38f15 | 8575 | } |
| e054468f AM |
8576 | |
| 8577 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
| 8578 | for (; local_plt < end_local_plt; ++local_plt) | |
| 8579 | { | |
| 8580 | struct plt_entry *ent; | |
| 8581 | ||
| 8582 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
| 8583 | if (ent->plt.refcount > 0) | |
| 8584 | { | |
| 91d6fa6a | 8585 | s = htab->iplt; |
| e054468f AM |
8586 | ent->plt.offset = s->size; |
| 8587 | s->size += PLT_ENTRY_SIZE; | |
| 8588 | ||
| 25f23106 | 8589 | htab->reliplt->size += sizeof (Elf64_External_Rela); |
| e054468f AM |
8590 | } |
| 8591 | else | |
| 8592 | ent->plt.offset = (bfd_vma) -1; | |
| 8593 | } | |
| 65f38f15 AM |
8594 | } |
| 8595 | ||
| 8596 | /* Allocate global sym .plt and .got entries, and space for global | |
| 8597 | sym dynamic relocs. */ | |
| 4ce794b7 | 8598 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
| 65f38f15 | 8599 | |
| 102890f0 AM |
8600 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 8601 | { | |
| 0c8d6e5c | 8602 | if (!is_ppc64_elf (ibfd)) |
| 102890f0 AM |
8603 | continue; |
| 8604 | ||
| 8605 | if (ppc64_tlsld_got (ibfd)->refcount > 0) | |
| 8606 | { | |
| 8607 | s = ppc64_elf_tdata (ibfd)->got; | |
| 8608 | ppc64_tlsld_got (ibfd)->offset = s->size; | |
| 8609 | s->size += 16; | |
| 8610 | if (info->shared) | |
| 8611 | { | |
| 8612 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 8613 | srel->size += sizeof (Elf64_External_Rela); | |
| 8614 | } | |
| 8615 | } | |
| 8616 | else | |
| 8617 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
| 8618 | } | |
| 8619 | ||
| 65f38f15 AM |
8620 | /* We now have determined the sizes of the various dynamic sections. |
| 8621 | Allocate memory for them. */ | |
| b34976b6 | 8622 | relocs = FALSE; |
| 65f38f15 AM |
8623 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 8624 | { | |
| 8625 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
| 8626 | continue; | |
| 8627 | ||
| 4ce794b7 | 8628 | if (s == htab->brlt || s == htab->relbrlt) |
| 721956f4 AM |
8629 | /* These haven't been allocated yet; don't strip. */ |
| 8630 | continue; | |
| e717da7e AM |
8631 | else if (s == htab->got |
| 8632 | || s == htab->plt | |
| e054468f | 8633 | || s == htab->iplt |
| c456f082 AM |
8634 | || s == htab->glink |
| 8635 | || s == htab->dynbss) | |
| 65f38f15 AM |
8636 | { |
| 8637 | /* Strip this section if we don't need it; see the | |
| 8638 | comment below. */ | |
| 5bd4f169 | 8639 | } |
| 0112cd26 | 8640 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
| 5bd4f169 | 8641 | { |
| c456f082 | 8642 | if (s->size != 0) |
| 5bd4f169 | 8643 | { |
| 4ce794b7 | 8644 | if (s != htab->relplt) |
| b34976b6 | 8645 | relocs = TRUE; |
| 5bd4f169 AM |
8646 | |
| 8647 | /* We use the reloc_count field as a counter if we need | |
| 8648 | to copy relocs into the output file. */ | |
| 8649 | s->reloc_count = 0; | |
| 8650 | } | |
| 8651 | } | |
| 65f38f15 | 8652 | else |
| 5bd4f169 AM |
8653 | { |
| 8654 | /* It's not one of our sections, so don't allocate space. */ | |
| 8655 | continue; | |
| 8656 | } | |
| 8657 | ||
| eea6121a | 8658 | if (s->size == 0) |
| 5bd4f169 | 8659 | { |
| c456f082 AM |
8660 | /* If we don't need this section, strip it from the |
| 8661 | output file. This is mostly to handle .rela.bss and | |
| 8662 | .rela.plt. We must create both sections in | |
| 8663 | create_dynamic_sections, because they must be created | |
| 8664 | before the linker maps input sections to output | |
| 8665 | sections. The linker does that before | |
| 8666 | adjust_dynamic_symbol is called, and it is that | |
| 8667 | function which decides whether anything needs to go | |
| 8668 | into these sections. */ | |
| 8423293d | 8669 | s->flags |= SEC_EXCLUDE; |
| 5bd4f169 AM |
8670 | continue; |
| 8671 | } | |
| 8672 | ||
| c456f082 | 8673 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 5f333394 AM |
8674 | continue; |
| 8675 | ||
| 65f38f15 AM |
8676 | /* Allocate memory for the section contents. We use bfd_zalloc |
| 8677 | here in case unused entries are not reclaimed before the | |
| 8678 | section's contents are written out. This should not happen, | |
| 411e1bfb AM |
8679 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
| 8680 | sections instead of garbage. | |
| 8681 | We also rely on the section contents being zero when writing | |
| 8682 | the GOT. */ | |
| eea6121a | 8683 | s->contents = bfd_zalloc (dynobj, s->size); |
| 65f38f15 | 8684 | if (s->contents == NULL) |
| b34976b6 | 8685 | return FALSE; |
| 5bd4f169 AM |
8686 | } |
| 8687 | ||
| e717da7e AM |
8688 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 8689 | { | |
| 0c8d6e5c | 8690 | if (!is_ppc64_elf (ibfd)) |
| 7b53ace3 AM |
8691 | continue; |
| 8692 | ||
| e717da7e AM |
8693 | s = ppc64_elf_tdata (ibfd)->got; |
| 8694 | if (s != NULL && s != htab->got) | |
| 8695 | { | |
| eea6121a | 8696 | if (s->size == 0) |
| 8423293d | 8697 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
8698 | else |
| 8699 | { | |
| eea6121a | 8700 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
8701 | if (s->contents == NULL) |
| 8702 | return FALSE; | |
| 8703 | } | |
| 8704 | } | |
| 8705 | s = ppc64_elf_tdata (ibfd)->relgot; | |
| 8706 | if (s != NULL) | |
| 8707 | { | |
| eea6121a | 8708 | if (s->size == 0) |
| 8423293d | 8709 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
8710 | else |
| 8711 | { | |
| eea6121a | 8712 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
8713 | if (s->contents == NULL) |
| 8714 | return FALSE; | |
| 8715 | relocs = TRUE; | |
| 8716 | s->reloc_count = 0; | |
| 8717 | } | |
| 8718 | } | |
| 8719 | } | |
| 8720 | ||
| e86ce104 | 8721 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 AM |
8722 | { |
| 8723 | /* Add some entries to the .dynamic section. We fill in the | |
| 8724 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
| 8725 | must add the entries now so that we get the correct size for | |
| 8726 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
| 8727 | dynamic linker and used by the debugger. */ | |
| dc810e39 | 8728 | #define add_dynamic_entry(TAG, VAL) \ |
| 5a580b3a | 8729 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| dc810e39 | 8730 | |
| 36af4a4e | 8731 | if (info->executable) |
| 5bd4f169 | 8732 | { |
| dc810e39 | 8733 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| b34976b6 | 8734 | return FALSE; |
| 5bd4f169 AM |
8735 | } |
| 8736 | ||
| eea6121a | 8737 | if (htab->plt != NULL && htab->plt->size != 0) |
| 5bd4f169 | 8738 | { |
| dc810e39 AM |
8739 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 8740 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
| 8741 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
| 5d1634d7 AM |
8742 | || !add_dynamic_entry (DT_JMPREL, 0) |
| 8743 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
| b34976b6 | 8744 | return FALSE; |
| 5bd4f169 AM |
8745 | } |
| 8746 | ||
| 19397422 AM |
8747 | if (NO_OPD_RELOCS) |
| 8748 | { | |
| 8749 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
| 8750 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
| b34976b6 | 8751 | return FALSE; |
| 19397422 AM |
8752 | } |
| 8753 | ||
| a7f2871e AM |
8754 | if (!htab->no_tls_get_addr_opt |
| 8755 | && htab->tls_get_addr_fd != NULL | |
| 8756 | && htab->tls_get_addr_fd->elf.plt.plist != NULL | |
| 8757 | && !add_dynamic_entry (DT_PPC64_TLSOPT, 0)) | |
| 8758 | return FALSE; | |
| 8759 | ||
| 5bd4f169 AM |
8760 | if (relocs) |
| 8761 | { | |
| dc810e39 AM |
8762 | if (!add_dynamic_entry (DT_RELA, 0) |
| 8763 | || !add_dynamic_entry (DT_RELASZ, 0) | |
| 8764 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
| b34976b6 | 8765 | return FALSE; |
| 5bd4f169 | 8766 | |
| 65f38f15 AM |
8767 | /* If any dynamic relocs apply to a read-only section, |
| 8768 | then we need a DT_TEXTREL entry. */ | |
| 248866a8 | 8769 | if ((info->flags & DF_TEXTREL) == 0) |
| 4ce794b7 | 8770 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
| 5bd4f169 | 8771 | |
| 65f38f15 | 8772 | if ((info->flags & DF_TEXTREL) != 0) |
| 5bd4f169 | 8773 | { |
| 65f38f15 | 8774 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| b34976b6 | 8775 | return FALSE; |
| 5bd4f169 | 8776 | } |
| 5bd4f169 | 8777 | } |
| 5bd4f169 | 8778 | } |
| 65f38f15 | 8779 | #undef add_dynamic_entry |
| 5bd4f169 | 8780 | |
| b34976b6 | 8781 | return TRUE; |
| 5bd4f169 AM |
8782 | } |
| 8783 | ||
| 721956f4 | 8784 | /* Determine the type of stub needed, if any, for a call. */ |
| 5bd4f169 | 8785 | |
| 4ce794b7 AM |
8786 | static inline enum ppc_stub_type |
| 8787 | ppc_type_of_stub (asection *input_sec, | |
| 8788 | const Elf_Internal_Rela *rel, | |
| 8789 | struct ppc_link_hash_entry **hash, | |
| e054468f | 8790 | struct plt_entry **plt_ent, |
| 4ce794b7 | 8791 | bfd_vma destination) |
| 5bd4f169 | 8792 | { |
| 721956f4 AM |
8793 | struct ppc_link_hash_entry *h = *hash; |
| 8794 | bfd_vma location; | |
| 8795 | bfd_vma branch_offset; | |
| 8796 | bfd_vma max_branch_offset; | |
| 4ce794b7 | 8797 | enum elf_ppc64_reloc_type r_type; |
| 5bd4f169 | 8798 | |
| 721956f4 AM |
8799 | if (h != NULL) |
| 8800 | { | |
| e054468f | 8801 | struct plt_entry *ent; |
| 7fe2b9a6 | 8802 | struct ppc_link_hash_entry *fdh = h; |
| b31867b6 AM |
8803 | if (h->oh != NULL |
| 8804 | && h->oh->is_func_descriptor) | |
| 8805 | fdh = ppc_follow_link (h->oh); | |
| 8387904d | 8806 | |
| e054468f AM |
8807 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 8808 | if (ent->addend == rel->r_addend | |
| 8809 | && ent->plt.offset != (bfd_vma) -1) | |
| 8810 | { | |
| 8811 | *hash = fdh; | |
| 8812 | *plt_ent = ent; | |
| 8813 | return ppc_stub_plt_call; | |
| 8814 | } | |
| 5bd4f169 | 8815 | |
| 7fe2b9a6 AM |
8816 | /* Here, we know we don't have a plt entry. If we don't have a |
| 8817 | either a defined function descriptor or a defined entry symbol | |
| 8818 | in a regular object file, then it is pointless trying to make | |
| 8819 | any other type of stub. */ | |
| 8820 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
| 8821 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 8822 | && fdh->elf.root.u.def.section->output_section != NULL) | |
| 8823 | && !((h->elf.root.type == bfd_link_hash_defined | |
| 8824 | || h->elf.root.type == bfd_link_hash_defweak) | |
| 8825 | && h->elf.root.u.def.section->output_section != NULL)) | |
| 721956f4 | 8826 | return ppc_stub_none; |
| 5d1634d7 | 8827 | } |
| e054468f AM |
8828 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
| 8829 | { | |
| 8830 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
| 8831 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 8832 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
| 8833 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8834 | ||
| 8835 | if (local_plt[r_symndx] != NULL) | |
| 8836 | { | |
| 8837 | struct plt_entry *ent; | |
| 8838 | ||
| 8839 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
| 8840 | if (ent->addend == rel->r_addend | |
| 8841 | && ent->plt.offset != (bfd_vma) -1) | |
| 8842 | { | |
| 8843 | *plt_ent = ent; | |
| 8844 | return ppc_stub_plt_call; | |
| 8845 | } | |
| 8846 | } | |
| 8847 | } | |
| 5d1634d7 | 8848 | |
| 721956f4 AM |
8849 | /* Determine where the call point is. */ |
| 8850 | location = (input_sec->output_offset | |
| 8851 | + input_sec->output_section->vma | |
| 8852 | + rel->r_offset); | |
| 5d1634d7 | 8853 | |
| 721956f4 AM |
8854 | branch_offset = destination - location; |
| 8855 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 5d1634d7 | 8856 | |
| 721956f4 AM |
8857 | /* Determine if a long branch stub is needed. */ |
| 8858 | max_branch_offset = 1 << 25; | |
| 4ce794b7 | 8859 | if (r_type != R_PPC64_REL24) |
| 721956f4 | 8860 | max_branch_offset = 1 << 15; |
| 5d1634d7 | 8861 | |
| 721956f4 AM |
8862 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
| 8863 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
| 8864 | is needed later. */ | |
| 8865 | return ppc_stub_long_branch; | |
| 5d1634d7 | 8866 | |
| 721956f4 | 8867 | return ppc_stub_none; |
| 5d1634d7 AM |
8868 | } |
| 8869 | ||
| 8870 | /* Build a .plt call stub. */ | |
| 8871 | ||
| 4ce794b7 | 8872 | static inline bfd_byte * |
| 176a0d42 | 8873 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r) |
| 5d1634d7 AM |
8874 | { |
| 8875 | #define PPC_LO(v) ((v) & 0xffff) | |
| 8876 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
| 8877 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
| 8878 | ||
| ac2df442 AM |
8879 | if (PPC_HA (offset) != 0) |
| 8880 | { | |
| 176a0d42 AM |
8881 | if (r != NULL) |
| 8882 | { | |
| 8883 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
| 8884 | r[1].r_offset = r[0].r_offset + 8; | |
| 8885 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 8886 | r[1].r_addend = r[0].r_addend; | |
| 8887 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
| 8888 | { | |
| 8889 | r[2].r_offset = r[1].r_offset + 4; | |
| 8890 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
| 8891 | r[2].r_addend = r[0].r_addend; | |
| 8892 | } | |
| 8893 | else | |
| 8894 | { | |
| 8895 | r[2].r_offset = r[1].r_offset + 8; | |
| 8896 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 8897 | r[2].r_addend = r[0].r_addend + 8; | |
| 8898 | r[3].r_offset = r[2].r_offset + 4; | |
| 8899 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 8900 | r[3].r_addend = r[0].r_addend + 16; | |
| 8901 | } | |
| 8902 | } | |
| ac2df442 AM |
8903 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
| 8904 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
| 8905 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
| 8906 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
| 8907 | { | |
| 8908 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
| 8909 | offset = 0; | |
| 8910 | } | |
| 8911 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
| 8912 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; | |
| 8913 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
| 8914 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
| 8915 | } | |
| 8916 | else | |
| 8917 | { | |
| 176a0d42 AM |
8918 | if (r != NULL) |
| 8919 | { | |
| 8920 | r[0].r_offset += 4; | |
| 8921 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 8922 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
| 8923 | { | |
| 8924 | r[1].r_offset = r[0].r_offset + 4; | |
| 8925 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
| 8926 | r[1].r_addend = r[0].r_addend; | |
| 8927 | } | |
| 8928 | else | |
| 8929 | { | |
| 8930 | r[1].r_offset = r[0].r_offset + 8; | |
| 8931 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 8932 | r[1].r_addend = r[0].r_addend + 16; | |
| 8933 | r[2].r_offset = r[1].r_offset + 4; | |
| 8934 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 8935 | r[2].r_addend = r[0].r_addend + 8; | |
| 8936 | } | |
| 8937 | } | |
| ac2df442 AM |
8938 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
| 8939 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; | |
| 8940 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
| 8941 | { | |
| 8942 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
| 8943 | offset = 0; | |
| 8944 | } | |
| 8945 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
| 8946 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
| 8947 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
| 8948 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
| 8949 | } | |
| 5d1634d7 AM |
8950 | return p; |
| 8951 | } | |
| 8952 | ||
| a7f2871e AM |
8953 | /* Build a special .plt call stub for __tls_get_addr. */ |
| 8954 | ||
| 8955 | #define LD_R11_0R3 0xe9630000 | |
| 8956 | #define LD_R12_0R3 0xe9830000 | |
| 8957 | #define MR_R0_R3 0x7c601b78 | |
| 8958 | #define CMPDI_R11_0 0x2c2b0000 | |
| 8959 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
| 8960 | #define BEQLR 0x4d820020 | |
| 8961 | #define MR_R3_R0 0x7c030378 | |
| 8962 | #define MFLR_R11 0x7d6802a6 | |
| 8963 | #define STD_R11_0R1 0xf9610000 | |
| 8964 | #define BCTRL 0x4e800421 | |
| 8965 | #define LD_R11_0R1 0xe9610000 | |
| 8966 | #define LD_R2_0R1 0xe8410000 | |
| 8967 | #define MTLR_R11 0x7d6803a6 | |
| 8968 | ||
| 8969 | static inline bfd_byte * | |
| 8970 | build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset, | |
| 8971 | Elf_Internal_Rela *r) | |
| 8972 | { | |
| 8973 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; | |
| 8974 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
| 8975 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
| 8976 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
| 8977 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
| 8978 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
| 8979 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
| 8980 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
| 8981 | bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4; | |
| 8982 | ||
| 8983 | if (r != NULL) | |
| 8984 | r[0].r_offset += 9 * 4; | |
| 8985 | p = build_plt_stub (obfd, p, offset, r); | |
| 8986 | bfd_put_32 (obfd, BCTRL, p - 4); | |
| 8987 | ||
| 8988 | bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4; | |
| 8989 | bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4; | |
| 8990 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; | |
| 8991 | bfd_put_32 (obfd, BLR, p), p += 4; | |
| 8992 | ||
| 8993 | return p; | |
| 8994 | } | |
| 8995 | ||
| 176a0d42 AM |
8996 | static Elf_Internal_Rela * |
| 8997 | get_relocs (asection *sec, int count) | |
| 8998 | { | |
| 8999 | Elf_Internal_Rela *relocs; | |
| 9000 | struct bfd_elf_section_data *elfsec_data; | |
| 9001 | ||
| 9002 | elfsec_data = elf_section_data (sec); | |
| 9003 | relocs = elfsec_data->relocs; | |
| 9004 | if (relocs == NULL) | |
| 9005 | { | |
| 9006 | bfd_size_type relsize; | |
| 9007 | relsize = sec->reloc_count * sizeof (*relocs); | |
| 9008 | relocs = bfd_alloc (sec->owner, relsize); | |
| 9009 | if (relocs == NULL) | |
| 9010 | return NULL; | |
| 9011 | elfsec_data->relocs = relocs; | |
| 9012 | elfsec_data->rel_hdr.sh_size = (sec->reloc_count | |
| 9013 | * sizeof (Elf64_External_Rela)); | |
| 9014 | elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela); | |
| 9015 | sec->reloc_count = 0; | |
| 9016 | } | |
| 9017 | relocs += sec->reloc_count; | |
| 9018 | sec->reloc_count += count; | |
| 9019 | return relocs; | |
| 9020 | } | |
| 9021 | ||
| b34976b6 | 9022 | static bfd_boolean |
| 4ce794b7 | 9023 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 5d1634d7 | 9024 | { |
| 721956f4 AM |
9025 | struct ppc_stub_hash_entry *stub_entry; |
| 9026 | struct ppc_branch_hash_entry *br_entry; | |
| 5d1634d7 AM |
9027 | struct bfd_link_info *info; |
| 9028 | struct ppc_link_hash_table *htab; | |
| 721956f4 AM |
9029 | bfd_byte *loc; |
| 9030 | bfd_byte *p; | |
| ee75fd95 | 9031 | bfd_vma dest, off; |
| 721956f4 | 9032 | int size; |
| 176a0d42 | 9033 | Elf_Internal_Rela *r; |
| e054468f | 9034 | asection *plt; |
| 5d1634d7 | 9035 | |
| 721956f4 AM |
9036 | /* Massage our args to the form they really have. */ |
| 9037 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 4ce794b7 | 9038 | info = in_arg; |
| 5d1634d7 | 9039 | |
| 5d1634d7 AM |
9040 | htab = ppc_hash_table (info); |
| 9041 | ||
| 721956f4 | 9042 | /* Make a note of the offset within the stubs for this entry. */ |
| eea6121a | 9043 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
| 97b639ba | 9044 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
| 721956f4 | 9045 | |
| 4ce794b7 | 9046 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
| 721956f4 | 9047 | switch (stub_entry->stub_type) |
| 5d1634d7 | 9048 | { |
| 721956f4 | 9049 | case ppc_stub_long_branch: |
| ad8e1ba5 | 9050 | case ppc_stub_long_branch_r2off: |
| 721956f4 | 9051 | /* Branches are relative. This is where we are going to. */ |
| ee75fd95 AM |
9052 | off = dest = (stub_entry->target_value |
| 9053 | + stub_entry->target_section->output_offset | |
| 9054 | + stub_entry->target_section->output_section->vma); | |
| 5d1634d7 | 9055 | |
| 721956f4 AM |
9056 | /* And this is where we are coming from. */ |
| 9057 | off -= (stub_entry->stub_offset | |
| 97b639ba AM |
9058 | + stub_entry->stub_sec->output_offset |
| 9059 | + stub_entry->stub_sec->output_section->vma); | |
| e86ce104 | 9060 | |
| ac2df442 AM |
9061 | size = 4; |
| 9062 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| ad8e1ba5 AM |
9063 | { |
| 9064 | bfd_vma r2off; | |
| 9065 | ||
| 9066 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
| 9067 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
| 97b639ba | 9068 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
| ad8e1ba5 | 9069 | loc += 4; |
| ac2df442 AM |
9070 | size = 12; |
| 9071 | if (PPC_HA (r2off) != 0) | |
| 9072 | { | |
| 9073 | size = 16; | |
| 9074 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| 9075 | loc += 4; | |
| 9076 | } | |
| 97b639ba | 9077 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
| ad8e1ba5 | 9078 | loc += 4; |
| ac2df442 | 9079 | off -= size - 4; |
| ad8e1ba5 | 9080 | } |
| 97b639ba | 9081 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
| ad8e1ba5 | 9082 | |
| 5c3dead3 AM |
9083 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
| 9084 | { | |
| 9085 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
| 9086 | stub_entry->root.string); | |
| 9087 | htab->stub_error = TRUE; | |
| 9088 | return FALSE; | |
| 9089 | } | |
| ee75fd95 AM |
9090 | |
| 9091 | if (info->emitrelocations) | |
| 9092 | { | |
| 176a0d42 AM |
9093 | r = get_relocs (stub_entry->stub_sec, 1); |
| 9094 | if (r == NULL) | |
| 9095 | return FALSE; | |
| ee75fd95 AM |
9096 | r->r_offset = loc - stub_entry->stub_sec->contents; |
| 9097 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
| 9098 | r->r_addend = dest; | |
| 9099 | if (stub_entry->h != NULL) | |
| 9100 | { | |
| 9101 | struct elf_link_hash_entry **hashes; | |
| 9102 | unsigned long symndx; | |
| 9103 | struct ppc_link_hash_entry *h; | |
| 9104 | ||
| 9105 | hashes = elf_sym_hashes (htab->stub_bfd); | |
| 9106 | if (hashes == NULL) | |
| 9107 | { | |
| 9108 | bfd_size_type hsize; | |
| 9109 | ||
| 9110 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
| 9111 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
| 9112 | if (hashes == NULL) | |
| 9113 | return FALSE; | |
| 9114 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
| 9115 | htab->stub_globals = 1; | |
| 9116 | } | |
| 9117 | symndx = htab->stub_globals++; | |
| 9118 | h = stub_entry->h; | |
| 9119 | hashes[symndx] = &h->elf; | |
| 9120 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
| 9121 | if (h->oh != NULL && h->oh->is_func) | |
| b31867b6 | 9122 | h = ppc_follow_link (h->oh); |
| ee75fd95 AM |
9123 | if (h->elf.root.u.def.section != stub_entry->target_section) |
| 9124 | /* H is an opd symbol. The addend must be zero. */ | |
| 9125 | r->r_addend = 0; | |
| 9126 | else | |
| 9127 | { | |
| 9128 | off = (h->elf.root.u.def.value | |
| 9129 | + h->elf.root.u.def.section->output_offset | |
| 9130 | + h->elf.root.u.def.section->output_section->vma); | |
| 9131 | r->r_addend -= off; | |
| 9132 | } | |
| 9133 | } | |
| 9134 | } | |
| 721956f4 | 9135 | break; |
| e86ce104 | 9136 | |
| 721956f4 | 9137 | case ppc_stub_plt_branch: |
| ad8e1ba5 | 9138 | case ppc_stub_plt_branch_r2off: |
| 721956f4 AM |
9139 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
| 9140 | stub_entry->root.string + 9, | |
| b34976b6 | 9141 | FALSE, FALSE); |
| 721956f4 AM |
9142 | if (br_entry == NULL) |
| 9143 | { | |
| 9144 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
| 5c3dead3 | 9145 | stub_entry->root.string); |
| b34976b6 AM |
9146 | htab->stub_error = TRUE; |
| 9147 | return FALSE; | |
| 721956f4 AM |
9148 | } |
| 9149 | ||
| 176a0d42 AM |
9150 | dest = (stub_entry->target_value |
| 9151 | + stub_entry->target_section->output_offset | |
| 9152 | + stub_entry->target_section->output_section->vma); | |
| 721956f4 | 9153 | |
| 176a0d42 | 9154 | bfd_put_64 (htab->brlt->owner, dest, |
| 4ce794b7 | 9155 | htab->brlt->contents + br_entry->offset); |
| 721956f4 | 9156 | |
| f94498ff | 9157 | if (br_entry->iter == htab->stub_iteration) |
| 721956f4 | 9158 | { |
| f94498ff | 9159 | br_entry->iter = 0; |
| 84f5d08e | 9160 | |
| f94498ff | 9161 | if (htab->relbrlt != NULL) |
| 84f5d08e | 9162 | { |
| f94498ff AM |
9163 | /* Create a reloc for the branch lookup table entry. */ |
| 9164 | Elf_Internal_Rela rela; | |
| 9165 | bfd_byte *rl; | |
| 9166 | ||
| 9167 | rela.r_offset = (br_entry->offset | |
| 9168 | + htab->brlt->output_offset | |
| 9169 | + htab->brlt->output_section->vma); | |
| 9170 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 9171 | rela.r_addend = dest; |
| f94498ff AM |
9172 | |
| 9173 | rl = htab->relbrlt->contents; | |
| 9174 | rl += (htab->relbrlt->reloc_count++ | |
| 9175 | * sizeof (Elf64_External_Rela)); | |
| 9176 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
| 9177 | } | |
| 9178 | else if (info->emitrelocations) | |
| 9179 | { | |
| 176a0d42 AM |
9180 | r = get_relocs (htab->brlt, 1); |
| 9181 | if (r == NULL) | |
| 9182 | return FALSE; | |
| 9183 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
| 9184 | normal reloc processing. Symbols and offsets are not | |
| 9185 | translated from input file to output file form, so | |
| 9186 | set up the offset per the output file. */ | |
| f94498ff AM |
9187 | r->r_offset = (br_entry->offset |
| 9188 | + htab->brlt->output_offset | |
| 9189 | + htab->brlt->output_section->vma); | |
| 9190 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 9191 | r->r_addend = dest; |
| 84f5d08e | 9192 | } |
| 84f5d08e | 9193 | } |
| 721956f4 | 9194 | |
| 176a0d42 AM |
9195 | dest = (br_entry->offset |
| 9196 | + htab->brlt->output_offset | |
| 9197 | + htab->brlt->output_section->vma); | |
| 9198 | ||
| 9199 | off = (dest | |
| 4ce794b7 | 9200 | - elf_gp (htab->brlt->output_section->owner) |
| ad8e1ba5 | 9201 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 9202 | |
| ad8e1ba5 | 9203 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 5d1634d7 AM |
9204 | { |
| 9205 | (*_bfd_error_handler) | |
| e86ce104 | 9206 | (_("linkage table error against `%s'"), |
| 721956f4 | 9207 | stub_entry->root.string); |
| 5d1634d7 | 9208 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
9209 | htab->stub_error = TRUE; |
| 9210 | return FALSE; | |
| 5d1634d7 | 9211 | } |
| 41bd81ab | 9212 | |
| 176a0d42 AM |
9213 | if (info->emitrelocations) |
| 9214 | { | |
| 9215 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
| 9216 | if (r == NULL) | |
| 9217 | return FALSE; | |
| 9218 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
| 7cfbafbc AM |
9219 | if (bfd_big_endian (info->output_bfd)) |
| 9220 | r[0].r_offset += 2; | |
| 176a0d42 AM |
9221 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
| 9222 | r[0].r_offset += 4; | |
| 9223 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 9224 | r[0].r_addend = dest; | |
| 9225 | if (PPC_HA (off) != 0) | |
| 9226 | { | |
| 9227 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
| 9228 | r[1].r_offset = r[0].r_offset + 4; | |
| 9229 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 9230 | r[1].r_addend = r[0].r_addend; | |
| 9231 | } | |
| 9232 | } | |
| 9233 | ||
| ad8e1ba5 AM |
9234 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| 9235 | { | |
| 176a0d42 | 9236 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
9237 | { |
| 9238 | size = 16; | |
| 176a0d42 | 9239 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
| ac2df442 | 9240 | loc += 4; |
| 176a0d42 | 9241 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
| ac2df442 AM |
9242 | } |
| 9243 | else | |
| 9244 | { | |
| 9245 | size = 12; | |
| 176a0d42 | 9246 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
| ac2df442 | 9247 | } |
| ad8e1ba5 AM |
9248 | } |
| 9249 | else | |
| 9250 | { | |
| 9251 | bfd_vma r2off; | |
| 9252 | ||
| 9253 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
| 9254 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
| 97b639ba | 9255 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
| ad8e1ba5 | 9256 | loc += 4; |
| ac2df442 | 9257 | size = 20; |
| 176a0d42 | 9258 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
9259 | { |
| 9260 | size += 4; | |
| 176a0d42 | 9261 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
| ac2df442 | 9262 | loc += 4; |
| 176a0d42 | 9263 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
| ac2df442 AM |
9264 | loc += 4; |
| 9265 | } | |
| 9266 | else | |
| 9267 | { | |
| 176a0d42 | 9268 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
| ac2df442 AM |
9269 | loc += 4; |
| 9270 | } | |
| 9271 | ||
| 9272 | if (PPC_HA (r2off) != 0) | |
| 9273 | { | |
| 9274 | size += 4; | |
| 9275 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| 9276 | loc += 4; | |
| 9277 | } | |
| 97b639ba | 9278 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
| ad8e1ba5 AM |
9279 | } |
| 9280 | loc += 4; | |
| 97b639ba | 9281 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
| ad8e1ba5 | 9282 | loc += 4; |
| 97b639ba | 9283 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
| 721956f4 | 9284 | break; |
| 5d1634d7 | 9285 | |
| 721956f4 | 9286 | case ppc_stub_plt_call: |
| e054468f | 9287 | if (stub_entry->h != NULL |
| b31867b6 AM |
9288 | && stub_entry->h->is_func_descriptor |
| 9289 | && stub_entry->h->oh != NULL) | |
| c862ae31 | 9290 | { |
| b31867b6 AM |
9291 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
| 9292 | ||
| 9293 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
| 9294 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
| 9295 | FIXME: We used to define the symbol on one of the call | |
| 9296 | stubs instead, which is why we test symbol section id | |
| 9297 | against htab->top_id in various places. Likely all | |
| 9298 | these checks could now disappear. */ | |
| 9299 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
| 9300 | fh->elf.root.type = bfd_link_hash_undefweak; | |
| c862ae31 AM |
9301 | } |
| 9302 | ||
| 721956f4 | 9303 | /* Now build the stub. */ |
| e054468f | 9304 | dest = stub_entry->plt_ent->plt.offset & ~1; |
| 176a0d42 | 9305 | if (dest >= (bfd_vma) -2) |
| 721956f4 AM |
9306 | abort (); |
| 9307 | ||
| e054468f | 9308 | plt = htab->plt; |
| 25f23106 AM |
9309 | if (!htab->elf.dynamic_sections_created |
| 9310 | || stub_entry->h == NULL | |
| 9311 | || stub_entry->h->elf.dynindx == -1) | |
| e054468f AM |
9312 | plt = htab->iplt; |
| 9313 | ||
| 9314 | dest += plt->output_offset + plt->output_section->vma; | |
| 9315 | ||
| 9316 | if (stub_entry->h == NULL | |
| 9317 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
| 9318 | { | |
| 9319 | Elf_Internal_Rela rela; | |
| 9320 | bfd_byte *rl; | |
| 9321 | ||
| 9322 | rela.r_offset = dest; | |
| 25f23106 | 9323 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); |
| e054468f AM |
9324 | rela.r_addend = (stub_entry->target_value |
| 9325 | + stub_entry->target_section->output_offset | |
| 9326 | + stub_entry->target_section->output_section->vma); | |
| 9327 | ||
| 25f23106 AM |
9328 | rl = (htab->reliplt->contents |
| 9329 | + (htab->reliplt->reloc_count++ | |
| 9330 | * sizeof (Elf64_External_Rela))); | |
| 9331 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
| e054468f AM |
9332 | stub_entry->plt_ent->plt.offset |= 1; |
| 9333 | } | |
| 176a0d42 AM |
9334 | |
| 9335 | off = (dest | |
| e054468f | 9336 | - elf_gp (plt->output_section->owner) |
| 176a0d42 | 9337 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 9338 | |
| ad8e1ba5 | 9339 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 721956f4 AM |
9340 | { |
| 9341 | (*_bfd_error_handler) | |
| 9342 | (_("linkage table error against `%s'"), | |
| e054468f AM |
9343 | stub_entry->h != NULL |
| 9344 | ? stub_entry->h->elf.root.root.string | |
| 9345 | : "<local sym>"); | |
| 721956f4 | 9346 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
9347 | htab->stub_error = TRUE; |
| 9348 | return FALSE; | |
| 721956f4 AM |
9349 | } |
| 9350 | ||
| 176a0d42 AM |
9351 | r = NULL; |
| 9352 | if (info->emitrelocations) | |
| 9353 | { | |
| 9354 | r = get_relocs (stub_entry->stub_sec, | |
| 9355 | (2 + (PPC_HA (off) != 0) | |
| 9356 | + (PPC_HA (off + 16) == PPC_HA (off)))); | |
| 9357 | if (r == NULL) | |
| 9358 | return FALSE; | |
| 9359 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
| 7cfbafbc AM |
9360 | if (bfd_big_endian (info->output_bfd)) |
| 9361 | r[0].r_offset += 2; | |
| 176a0d42 AM |
9362 | r[0].r_addend = dest; |
| 9363 | } | |
| a7f2871e AM |
9364 | if (stub_entry->h != NULL |
| 9365 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 9366 | || stub_entry->h == htab->tls_get_addr) | |
| 9367 | && !htab->no_tls_get_addr_opt) | |
| 9368 | p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r); | |
| 9369 | else | |
| 9370 | p = build_plt_stub (htab->stub_bfd, loc, off, r); | |
| 721956f4 AM |
9371 | size = p - loc; |
| 9372 | break; | |
| 9373 | ||
| 9374 | default: | |
| 9375 | BFD_FAIL (); | |
| b34976b6 | 9376 | return FALSE; |
| 721956f4 AM |
9377 | } |
| 9378 | ||
| eea6121a | 9379 | stub_entry->stub_sec->size += size; |
| 97b639ba | 9380 | |
| ee75fd95 | 9381 | if (htab->emit_stub_syms) |
| 97b639ba AM |
9382 | { |
| 9383 | struct elf_link_hash_entry *h; | |
| ee75fd95 AM |
9384 | size_t len1, len2; |
| 9385 | char *name; | |
| 9386 | const char *const stub_str[] = { "long_branch", | |
| 9387 | "long_branch_r2off", | |
| 9388 | "plt_branch", | |
| 9389 | "plt_branch_r2off", | |
| 9390 | "plt_call" }; | |
| 9391 | ||
| 9392 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
| 9393 | len2 = strlen (stub_entry->root.string); | |
| 9394 | name = bfd_malloc (len1 + len2 + 2); | |
| 9395 | if (name == NULL) | |
| 9396 | return FALSE; | |
| 9397 | memcpy (name, stub_entry->root.string, 9); | |
| 9398 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
| 9399 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
| 9400 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
| 97b639ba AM |
9401 | if (h == NULL) |
| 9402 | return FALSE; | |
| 9403 | if (h->root.type == bfd_link_hash_new) | |
| 9404 | { | |
| 9405 | h->root.type = bfd_link_hash_defined; | |
| 9406 | h->root.u.def.section = stub_entry->stub_sec; | |
| 9407 | h->root.u.def.value = stub_entry->stub_offset; | |
| f5385ebf AM |
9408 | h->ref_regular = 1; |
| 9409 | h->def_regular = 1; | |
| 9410 | h->ref_regular_nonweak = 1; | |
| 9411 | h->forced_local = 1; | |
| 9412 | h->non_elf = 0; | |
| 97b639ba AM |
9413 | } |
| 9414 | } | |
| 9415 | ||
| b34976b6 | 9416 | return TRUE; |
| 721956f4 AM |
9417 | } |
| 9418 | ||
| 9419 | /* As above, but don't actually build the stub. Just bump offset so | |
| 9420 | we know stub section sizes, and select plt_branch stubs where | |
| 9421 | long_branch stubs won't do. */ | |
| 9422 | ||
| b34976b6 | 9423 | static bfd_boolean |
| 4ce794b7 | 9424 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 721956f4 AM |
9425 | { |
| 9426 | struct ppc_stub_hash_entry *stub_entry; | |
| 63bc6f6c | 9427 | struct bfd_link_info *info; |
| 721956f4 AM |
9428 | struct ppc_link_hash_table *htab; |
| 9429 | bfd_vma off; | |
| 9430 | int size; | |
| 9431 | ||
| 9432 | /* Massage our args to the form they really have. */ | |
| 9433 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 63bc6f6c AM |
9434 | info = in_arg; |
| 9435 | ||
| 9436 | htab = ppc_hash_table (info); | |
| 721956f4 AM |
9437 | |
| 9438 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
| 9439 | { | |
| e054468f AM |
9440 | asection *plt; |
| 9441 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
| 58ac9f71 | 9442 | if (off >= (bfd_vma) -2) |
| 411e1bfb | 9443 | abort (); |
| e054468f | 9444 | plt = htab->plt; |
| 25f23106 AM |
9445 | if (!htab->elf.dynamic_sections_created |
| 9446 | || stub_entry->h == NULL | |
| 9447 | || stub_entry->h->elf.dynindx == -1) | |
| e054468f AM |
9448 | plt = htab->iplt; |
| 9449 | off += (plt->output_offset | |
| 9450 | + plt->output_section->vma | |
| 9451 | - elf_gp (plt->output_section->owner) | |
| ad8e1ba5 | 9452 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 9453 | |
| ad8e1ba5 | 9454 | size = PLT_CALL_STUB_SIZE; |
| ac2df442 AM |
9455 | if (PPC_HA (off) == 0) |
| 9456 | size -= 4; | |
| 4ce794b7 | 9457 | if (PPC_HA (off + 16) != PPC_HA (off)) |
| 721956f4 | 9458 | size += 4; |
| a7f2871e AM |
9459 | if (stub_entry->h != NULL |
| 9460 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 9461 | || stub_entry->h == htab->tls_get_addr) | |
| 9462 | && !htab->no_tls_get_addr_opt) | |
| 9463 | size += 13 * 4; | |
| 176a0d42 AM |
9464 | if (info->emitrelocations) |
| 9465 | { | |
| 9466 | stub_entry->stub_sec->reloc_count | |
| 9467 | += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off)); | |
| 9468 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
| 9469 | } | |
| 721956f4 AM |
9470 | } |
| 9471 | else | |
| 9472 | { | |
| ad8e1ba5 AM |
9473 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
| 9474 | variants. */ | |
| ac2df442 AM |
9475 | bfd_vma r2off = 0; |
| 9476 | ||
| 721956f4 AM |
9477 | off = (stub_entry->target_value |
| 9478 | + stub_entry->target_section->output_offset | |
| 9479 | + stub_entry->target_section->output_section->vma); | |
| eea6121a | 9480 | off -= (stub_entry->stub_sec->size |
| 721956f4 AM |
9481 | + stub_entry->stub_sec->output_offset |
| 9482 | + stub_entry->stub_sec->output_section->vma); | |
| 9483 | ||
| ad8e1ba5 AM |
9484 | /* Reset the stub type from the plt variant in case we now |
| 9485 | can reach with a shorter stub. */ | |
| 9486 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
| 9487 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
| 9488 | ||
| 9489 | size = 4; | |
| 9490 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| 9491 | { | |
| ac2df442 AM |
9492 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off |
| 9493 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
| 9494 | size = 12; | |
| 9495 | if (PPC_HA (r2off) != 0) | |
| 9496 | size = 16; | |
| 9497 | off -= size - 4; | |
| ad8e1ba5 AM |
9498 | } |
| 9499 | ||
| 9500 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
| 721956f4 AM |
9501 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
| 9502 | { | |
| 9503 | struct ppc_branch_hash_entry *br_entry; | |
| 9504 | ||
| 9505 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
| 9506 | stub_entry->root.string + 9, | |
| b34976b6 | 9507 | TRUE, FALSE); |
| 721956f4 AM |
9508 | if (br_entry == NULL) |
| 9509 | { | |
| 9510 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
| 5c3dead3 | 9511 | stub_entry->root.string); |
| b34976b6 AM |
9512 | htab->stub_error = TRUE; |
| 9513 | return FALSE; | |
| 721956f4 AM |
9514 | } |
| 9515 | ||
| 9516 | if (br_entry->iter != htab->stub_iteration) | |
| 9517 | { | |
| 9518 | br_entry->iter = htab->stub_iteration; | |
| eea6121a AM |
9519 | br_entry->offset = htab->brlt->size; |
| 9520 | htab->brlt->size += 8; | |
| 63bc6f6c | 9521 | |
| ee75fd95 | 9522 | if (htab->relbrlt != NULL) |
| eea6121a | 9523 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
| 84f5d08e AM |
9524 | else if (info->emitrelocations) |
| 9525 | { | |
| 9526 | htab->brlt->reloc_count += 1; | |
| 9527 | htab->brlt->flags |= SEC_RELOC; | |
| 9528 | } | |
| 721956f4 | 9529 | } |
| ad8e1ba5 AM |
9530 | |
| 9531 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
| ac2df442 AM |
9532 | off = (br_entry->offset |
| 9533 | + htab->brlt->output_offset | |
| 9534 | + htab->brlt->output_section->vma | |
| 9535 | - elf_gp (htab->brlt->output_section->owner) | |
| 9536 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
| 9537 | ||
| 176a0d42 AM |
9538 | if (info->emitrelocations) |
| 9539 | { | |
| 9540 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
| 9541 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
| 9542 | } | |
| 9543 | ||
| ac2df442 AM |
9544 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| 9545 | { | |
| 9546 | size = 12; | |
| 176a0d42 | 9547 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
9548 | size = 16; |
| 9549 | } | |
| 9550 | else | |
| 9551 | { | |
| 9552 | size = 20; | |
| 176a0d42 | 9553 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
9554 | size += 4; |
| 9555 | ||
| 9556 | if (PPC_HA (r2off) != 0) | |
| 9557 | size += 4; | |
| 9558 | } | |
| 721956f4 | 9559 | } |
| 84f5d08e AM |
9560 | else if (info->emitrelocations) |
| 9561 | { | |
| 9562 | stub_entry->stub_sec->reloc_count += 1; | |
| 9563 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
| 9564 | } | |
| 721956f4 AM |
9565 | } |
| 9566 | ||
| eea6121a | 9567 | stub_entry->stub_sec->size += size; |
| b34976b6 | 9568 | return TRUE; |
| 721956f4 AM |
9569 | } |
| 9570 | ||
| 9571 | /* Set up various things so that we can make a list of input sections | |
| 9572 | for each output section included in the link. Returns -1 on error, | |
| cedb70c5 | 9573 | 0 when no stubs will be needed, and 1 on success. */ |
| 721956f4 AM |
9574 | |
| 9575 | int | |
| 4c52953f AM |
9576 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
| 9577 | struct bfd_link_info *info, | |
| 9578 | int no_multi_toc) | |
| 721956f4 AM |
9579 | { |
| 9580 | bfd *input_bfd; | |
| 734b6cf9 | 9581 | int top_id, top_index, id; |
| 721956f4 | 9582 | asection *section; |
| 734b6cf9 | 9583 | asection **input_list; |
| 721956f4 AM |
9584 | bfd_size_type amt; |
| 9585 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 9586 | ||
| 4c52953f AM |
9587 | htab->no_multi_toc = no_multi_toc; |
| 9588 | ||
| 4ce794b7 | 9589 | if (htab->brlt == NULL) |
| 721956f4 AM |
9590 | return 0; |
| 9591 | ||
| 1e2f5b6e | 9592 | /* Find the top input section id. */ |
| 3d6f9012 | 9593 | for (input_bfd = info->input_bfds, top_id = 3; |
| 721956f4 AM |
9594 | input_bfd != NULL; |
| 9595 | input_bfd = input_bfd->link_next) | |
| 9596 | { | |
| 721956f4 AM |
9597 | for (section = input_bfd->sections; |
| 9598 | section != NULL; | |
| 9599 | section = section->next) | |
| 9600 | { | |
| 9601 | if (top_id < section->id) | |
| 9602 | top_id = section->id; | |
| 9603 | } | |
| 9604 | } | |
| 721956f4 | 9605 | |
| 8f3bab57 | 9606 | htab->top_id = top_id; |
| 721956f4 | 9607 | amt = sizeof (struct map_stub) * (top_id + 1); |
| 4ce794b7 | 9608 | htab->stub_group = bfd_zmalloc (amt); |
| 721956f4 AM |
9609 | if (htab->stub_group == NULL) |
| 9610 | return -1; | |
| 9611 | ||
| 3d6f9012 AM |
9612 | /* Set toc_off for com, und, abs and ind sections. */ |
| 9613 | for (id = 0; id < 3; id++) | |
| 9614 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
| 721956f4 | 9615 | |
| 3d6f9012 | 9616 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
| bf102f86 AM |
9617 | htab->toc_bfd = NULL; |
| 9618 | htab->toc_first_sec = NULL; | |
| 734b6cf9 AM |
9619 | |
| 9620 | /* We can't use output_bfd->section_count here to find the top output | |
| 9621 | section index as some sections may have been removed, and | |
| 8423293d | 9622 | strip_excluded_output_sections doesn't renumber the indices. */ |
| 734b6cf9 AM |
9623 | for (section = output_bfd->sections, top_index = 0; |
| 9624 | section != NULL; | |
| 9625 | section = section->next) | |
| 9626 | { | |
| 9627 | if (top_index < section->index) | |
| 9628 | top_index = section->index; | |
| 9629 | } | |
| 9630 | ||
| 9631 | htab->top_index = top_index; | |
| 9632 | amt = sizeof (asection *) * (top_index + 1); | |
| 4ce794b7 | 9633 | input_list = bfd_zmalloc (amt); |
| 734b6cf9 AM |
9634 | htab->input_list = input_list; |
| 9635 | if (input_list == NULL) | |
| 9636 | return -1; | |
| 9637 | ||
| 721956f4 AM |
9638 | return 1; |
| 9639 | } | |
| 9640 | ||
| e717da7e AM |
9641 | /* The linker repeatedly calls this function for each TOC input section |
| 9642 | and linker generated GOT section. Group input bfds such that the toc | |
| 9643 | within a group is less than 64k in size. Will break with cute linker | |
| 9644 | scripts that play games with dot in the output toc section. */ | |
| ad8e1ba5 AM |
9645 | |
| 9646 | void | |
| 4ce794b7 | 9647 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
| ad8e1ba5 AM |
9648 | { |
| 9649 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 9650 | ||
| 4c52953f AM |
9651 | if (!htab->no_multi_toc) |
| 9652 | { | |
| bf102f86 | 9653 | bfd_vma addr, off; |
| 4c52953f | 9654 | |
| bf102f86 AM |
9655 | if (htab->toc_bfd != isec->owner) |
| 9656 | { | |
| 9657 | htab->toc_bfd = isec->owner; | |
| 9658 | htab->toc_first_sec = isec; | |
| 9659 | } | |
| 9660 | addr = isec->output_offset + isec->output_section->vma; | |
| 9661 | off = addr - htab->toc_curr; | |
| 4c52953f | 9662 | if (off + isec->size > 0x10000) |
| bf102f86 AM |
9663 | { |
| 9664 | addr = (htab->toc_first_sec->output_offset | |
| 9665 | + htab->toc_first_sec->output_section->vma); | |
| 9666 | htab->toc_curr = addr; | |
| 9667 | } | |
| 99877b66 | 9668 | |
| 4c52953f AM |
9669 | elf_gp (isec->owner) = (htab->toc_curr |
| 9670 | - elf_gp (isec->output_section->owner) | |
| 9671 | + TOC_BASE_OFF); | |
| 9672 | } | |
| ad8e1ba5 AM |
9673 | } |
| 9674 | ||
| 9675 | /* Called after the last call to the above function. */ | |
| 9676 | ||
| 9677 | void | |
| 4c52953f | 9678 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
| ad8e1ba5 AM |
9679 | { |
| 9680 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| ad8e1ba5 | 9681 | |
| 4c52953f AM |
9682 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
| 9683 | ||
| ad8e1ba5 AM |
9684 | /* toc_curr tracks the TOC offset used for code sections below in |
| 9685 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
| 3d6f9012 | 9686 | htab->toc_curr = TOC_BASE_OFF; |
| ad8e1ba5 AM |
9687 | } |
| 9688 | ||
| 9b5ecbd0 AM |
9689 | /* No toc references were found in ISEC. If the code in ISEC makes no |
| 9690 | calls, then there's no need to use toc adjusting stubs when branching | |
| 9691 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
| 4c52953f AM |
9692 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
| 9693 | needed, and 2 if a cyclical call-graph was found but no other reason | |
| 9694 | for a stub was detected. If called from the top level, a return of | |
| 9695 | 2 means the same as a return of 0. */ | |
| 9b5ecbd0 AM |
9696 | |
| 9697 | static int | |
| 4ce794b7 | 9698 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
| 9b5ecbd0 | 9699 | { |
| 4c52953f AM |
9700 | Elf_Internal_Rela *relstart, *rel; |
| 9701 | Elf_Internal_Sym *local_syms; | |
| 9b5ecbd0 | 9702 | int ret; |
| 4c52953f | 9703 | struct ppc_link_hash_table *htab; |
| 9b5ecbd0 | 9704 | |
| 772119ce AM |
9705 | /* We know none of our code bearing sections will need toc stubs. */ |
| 9706 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
| 9707 | return 0; | |
| 9708 | ||
| eea6121a | 9709 | if (isec->size == 0) |
| 082c50f8 AM |
9710 | return 0; |
| 9711 | ||
| 4c52953f AM |
9712 | if (isec->output_section == NULL) |
| 9713 | return 0; | |
| 9714 | ||
| 4c52953f AM |
9715 | if (isec->reloc_count == 0) |
| 9716 | return 0; | |
| 9717 | ||
| 9718 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
| 9719 | info->keep_memory); | |
| 9720 | if (relstart == NULL) | |
| 9721 | return -1; | |
| 9722 | ||
| 9723 | /* Look for branches to outside of this section. */ | |
| 9724 | local_syms = NULL; | |
| 9725 | ret = 0; | |
| 9726 | htab = ppc_hash_table (info); | |
| 9727 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
| 9b5ecbd0 | 9728 | { |
| 4c52953f AM |
9729 | enum elf_ppc64_reloc_type r_type; |
| 9730 | unsigned long r_symndx; | |
| 9731 | struct elf_link_hash_entry *h; | |
| 90aecf7a | 9732 | struct ppc_link_hash_entry *eh; |
| 4c52953f AM |
9733 | Elf_Internal_Sym *sym; |
| 9734 | asection *sym_sec; | |
| 74f0fb50 | 9735 | struct _opd_sec_data *opd; |
| 4c52953f AM |
9736 | bfd_vma sym_value; |
| 9737 | bfd_vma dest; | |
| 9738 | ||
| 9739 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 9740 | if (r_type != R_PPC64_REL24 | |
| 9741 | && r_type != R_PPC64_REL14 | |
| 9742 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 9743 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 9744 | continue; | |
| 9745 | ||
| 9746 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 9747 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
| 9748 | isec->owner)) | |
| 9b5ecbd0 | 9749 | { |
| 4c52953f AM |
9750 | ret = -1; |
| 9751 | break; | |
| 9b5ecbd0 | 9752 | } |
| 9b5ecbd0 | 9753 | |
| 2917689a | 9754 | /* Calls to dynamic lib functions go through a plt call stub |
| 90aecf7a AM |
9755 | that uses r2. */ |
| 9756 | eh = (struct ppc_link_hash_entry *) h; | |
| 9757 | if (eh != NULL | |
| 9758 | && (eh->elf.plt.plist != NULL | |
| 9759 | || (eh->oh != NULL | |
| b31867b6 | 9760 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) |
| 2917689a | 9761 | { |
| 90aecf7a AM |
9762 | ret = 1; |
| 9763 | break; | |
| 2917689a AM |
9764 | } |
| 9765 | ||
| 90aecf7a AM |
9766 | if (sym_sec == NULL) |
| 9767 | /* Ignore other undefined symbols. */ | |
| 9768 | continue; | |
| 9769 | ||
| 2917689a AM |
9770 | /* Assume branches to other sections not included in the link need |
| 9771 | stubs too, to cover -R and absolute syms. */ | |
| 4c52953f AM |
9772 | if (sym_sec->output_section == NULL) |
| 9773 | { | |
| 9774 | ret = 1; | |
| 9775 | break; | |
| 9776 | } | |
| 9777 | ||
| 9778 | if (h == NULL) | |
| 9779 | sym_value = sym->st_value; | |
| 9780 | else | |
| 9781 | { | |
| 9782 | if (h->root.type != bfd_link_hash_defined | |
| 9783 | && h->root.type != bfd_link_hash_defweak) | |
| 9784 | abort (); | |
| 9785 | sym_value = h->root.u.def.value; | |
| 9786 | } | |
| 9787 | sym_value += rel->r_addend; | |
| 9788 | ||
| 9789 | /* If this branch reloc uses an opd sym, find the code section. */ | |
| 74f0fb50 AM |
9790 | opd = get_opd_info (sym_sec); |
| 9791 | if (opd != NULL) | |
| 4c52953f | 9792 | { |
| 74f0fb50 | 9793 | if (h == NULL && opd->adjust != NULL) |
| 4c52953f AM |
9794 | { |
| 9795 | long adjust; | |
| 9796 | ||
| 74f0fb50 | 9797 | adjust = opd->adjust[sym->st_value / 8]; |
| 4c52953f AM |
9798 | if (adjust == -1) |
| 9799 | /* Assume deleted functions won't ever be called. */ | |
| 9800 | continue; | |
| 9801 | sym_value += adjust; | |
| 9802 | } | |
| 9803 | ||
| 9804 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
| 9805 | if (dest == (bfd_vma) -1) | |
| 9806 | continue; | |
| 9807 | } | |
| 9808 | else | |
| 9809 | dest = (sym_value | |
| 9810 | + sym_sec->output_offset | |
| 9811 | + sym_sec->output_section->vma); | |
| 9812 | ||
| 9813 | /* Ignore branch to self. */ | |
| 9814 | if (sym_sec == isec) | |
| 9815 | continue; | |
| 9816 | ||
| 9817 | /* If the called function uses the toc, we need a stub. */ | |
| 9818 | if (sym_sec->has_toc_reloc | |
| 9819 | || sym_sec->makes_toc_func_call) | |
| 9820 | { | |
| 9821 | ret = 1; | |
| 9822 | break; | |
| 9823 | } | |
| 9824 | ||
| 9825 | /* Assume any branch that needs a long branch stub might in fact | |
| 9826 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
| 9827 | else if (dest - (isec->output_offset | |
| 9828 | + isec->output_section->vma | |
| 9829 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
| 9b5ecbd0 AM |
9830 | { |
| 9831 | ret = 1; | |
| 9832 | break; | |
| 9833 | } | |
| 4c52953f AM |
9834 | |
| 9835 | /* If calling back to a section in the process of being tested, we | |
| 9836 | can't say for sure that no toc adjusting stubs are needed, so | |
| 9837 | don't return zero. */ | |
| 9838 | else if (sym_sec->call_check_in_progress) | |
| 9839 | ret = 2; | |
| 9840 | ||
| 9841 | /* Branches to another section that itself doesn't have any TOC | |
| 9842 | references are OK. Recursively call ourselves to check. */ | |
| 9843 | else if (sym_sec->id <= htab->top_id | |
| 9844 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
| 9845 | { | |
| 9846 | int recur; | |
| 9847 | ||
| 9848 | /* Mark current section as indeterminate, so that other | |
| 9849 | sections that call back to current won't be marked as | |
| 9850 | known. */ | |
| 9851 | isec->call_check_in_progress = 1; | |
| 9852 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
| 9853 | isec->call_check_in_progress = 0; | |
| 9854 | ||
| 9855 | if (recur < 0) | |
| 9856 | { | |
| 9857 | /* An error. Exit. */ | |
| 9858 | ret = -1; | |
| 9859 | break; | |
| 9860 | } | |
| 9861 | else if (recur <= 1) | |
| 9862 | { | |
| 9863 | /* Known result. Mark as checked and set section flag. */ | |
| 9864 | htab->stub_group[sym_sec->id].toc_off = 1; | |
| 9865 | if (recur != 0) | |
| 9866 | { | |
| 9867 | sym_sec->makes_toc_func_call = 1; | |
| 9868 | ret = 1; | |
| 9869 | break; | |
| 9870 | } | |
| 9871 | } | |
| 9872 | else | |
| 9873 | { | |
| 9874 | /* Unknown result. Continue checking. */ | |
| 9875 | ret = 2; | |
| 9876 | } | |
| 9877 | } | |
| 9b5ecbd0 AM |
9878 | } |
| 9879 | ||
| 4c52953f | 9880 | if (local_syms != NULL |
| 0ffa91dd | 9881 | && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms)) |
| 4c52953f AM |
9882 | free (local_syms); |
| 9883 | if (elf_section_data (isec)->relocs != relstart) | |
| 9884 | free (relstart); | |
| 9885 | ||
| 9b5ecbd0 AM |
9886 | return ret; |
| 9887 | } | |
| 9888 | ||
| 721956f4 AM |
9889 | /* The linker repeatedly calls this function for each input section, |
| 9890 | in the order that input sections are linked into output sections. | |
| 9891 | Build lists of input sections to determine groupings between which | |
| 9892 | we may insert linker stubs. */ | |
| 9893 | ||
| 9b5ecbd0 | 9894 | bfd_boolean |
| 4ce794b7 | 9895 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
| 721956f4 AM |
9896 | { |
| 9897 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 9898 | ||
| 734b6cf9 AM |
9899 | if ((isec->output_section->flags & SEC_CODE) != 0 |
| 9900 | && isec->output_section->index <= htab->top_index) | |
| 721956f4 | 9901 | { |
| 734b6cf9 | 9902 | asection **list = htab->input_list + isec->output_section->index; |
| 3d6f9012 | 9903 | /* Steal the link_sec pointer for our list. */ |
| 721956f4 | 9904 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
| 3d6f9012 AM |
9905 | /* This happens to make the list in reverse order, |
| 9906 | which is what we want. */ | |
| 734b6cf9 AM |
9907 | PREV_SEC (isec) = *list; |
| 9908 | *list = isec; | |
| 721956f4 | 9909 | } |
| ad8e1ba5 | 9910 | |
| 4c52953f | 9911 | if (htab->multi_toc_needed) |
| 9b5ecbd0 | 9912 | { |
| 4c52953f AM |
9913 | /* If a code section has a function that uses the TOC then we need |
| 9914 | to use the right TOC (obviously). Also, make sure that .opd gets | |
| 9915 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
| f94498ff AM |
9916 | can't find their function symbol (shouldn't ever happen now). |
| 9917 | Also specially treat .fixup for the linux kernel. .fixup | |
| 9918 | contains branches, but only back to the function that hit an | |
| 9919 | exception. */ | |
| 9920 | if (isec->has_toc_reloc | |
| 9921 | || (isec->flags & SEC_CODE) == 0 | |
| 9922 | || strcmp (isec->name, ".fixup") == 0) | |
| 4c52953f AM |
9923 | { |
| 9924 | if (elf_gp (isec->owner) != 0) | |
| 9925 | htab->toc_curr = elf_gp (isec->owner); | |
| 9926 | } | |
| 9927 | else if (htab->stub_group[isec->id].toc_off == 0) | |
| 9928 | { | |
| 9929 | int ret = toc_adjusting_stub_needed (info, isec); | |
| 9930 | if (ret < 0) | |
| 9931 | return FALSE; | |
| 9932 | else | |
| 9933 | isec->makes_toc_func_call = ret & 1; | |
| 9934 | } | |
| 9b5ecbd0 | 9935 | } |
| ad8e1ba5 AM |
9936 | |
| 9937 | /* Functions that don't use the TOC can belong in any TOC group. | |
| 9938 | Use the last TOC base. This happens to make _init and _fini | |
| 9939 | pasting work. */ | |
| 9940 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
| 9b5ecbd0 | 9941 | return TRUE; |
| 721956f4 AM |
9942 | } |
| 9943 | ||
| 9944 | /* See whether we can group stub sections together. Grouping stub | |
| 9945 | sections may result in fewer stubs. More importantly, we need to | |
| 9946 | put all .init* and .fini* stubs at the beginning of the .init or | |
| 9947 | .fini output sections respectively, because glibc splits the | |
| 9948 | _init and _fini functions into multiple parts. Putting a stub in | |
| 9949 | the middle of a function is not a good idea. */ | |
| 9950 | ||
| 9951 | static void | |
| 4ce794b7 AM |
9952 | group_sections (struct ppc_link_hash_table *htab, |
| 9953 | bfd_size_type stub_group_size, | |
| 9954 | bfd_boolean stubs_always_before_branch) | |
| 721956f4 | 9955 | { |
| 7c8fe5c4 AM |
9956 | asection **list; |
| 9957 | bfd_size_type stub14_group_size; | |
| 9958 | bfd_boolean suppress_size_errors; | |
| 9959 | ||
| 9960 | suppress_size_errors = FALSE; | |
| 9961 | stub14_group_size = stub_group_size; | |
| 9962 | if (stub_group_size == 1) | |
| 9963 | { | |
| 9964 | /* Default values. */ | |
| 9965 | if (stubs_always_before_branch) | |
| 9966 | { | |
| 9967 | stub_group_size = 0x1e00000; | |
| 9968 | stub14_group_size = 0x7800; | |
| 9969 | } | |
| 9970 | else | |
| 9971 | { | |
| 9972 | stub_group_size = 0x1c00000; | |
| 9973 | stub14_group_size = 0x7000; | |
| 9974 | } | |
| 9975 | suppress_size_errors = TRUE; | |
| 9976 | } | |
| 9977 | ||
| 9978 | list = htab->input_list + htab->top_index; | |
| 734b6cf9 | 9979 | do |
| 721956f4 | 9980 | { |
| 734b6cf9 AM |
9981 | asection *tail = *list; |
| 9982 | while (tail != NULL) | |
| 721956f4 | 9983 | { |
| 734b6cf9 AM |
9984 | asection *curr; |
| 9985 | asection *prev; | |
| 9986 | bfd_size_type total; | |
| 9987 | bfd_boolean big_sec; | |
| 9988 | bfd_vma curr_toc; | |
| 9989 | ||
| 9990 | curr = tail; | |
| eea6121a | 9991 | total = tail->size; |
| 7c8fe5c4 AM |
9992 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
| 9993 | ? stub14_group_size : stub_group_size); | |
| 9994 | if (big_sec && !suppress_size_errors) | |
| 5c3dead3 AM |
9995 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
| 9996 | tail->owner, tail); | |
| 734b6cf9 AM |
9997 | curr_toc = htab->stub_group[tail->id].toc_off; |
| 9998 | ||
| 9999 | while ((prev = PREV_SEC (curr)) != NULL | |
| 10000 | && ((total += curr->output_offset - prev->output_offset) | |
| 7c8fe5c4 AM |
10001 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
| 10002 | ? stub14_group_size : stub_group_size)) | |
| ad8e1ba5 | 10003 | && htab->stub_group[prev->id].toc_off == curr_toc) |
| 734b6cf9 AM |
10004 | curr = prev; |
| 10005 | ||
| 10006 | /* OK, the size from the start of CURR to the end is less | |
| 10007 | than stub_group_size and thus can be handled by one stub | |
| 10008 | section. (or the tail section is itself larger than | |
| 10009 | stub_group_size, in which case we may be toast.) We | |
| 10010 | should really be keeping track of the total size of stubs | |
| 10011 | added here, as stubs contribute to the final output | |
| 10012 | section size. That's a little tricky, and this way will | |
| 10013 | only break if stubs added make the total size more than | |
| 10014 | 2^25, ie. for the default stub_group_size, if stubs total | |
| 10015 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
| 10016 | do | |
| 721956f4 AM |
10017 | { |
| 10018 | prev = PREV_SEC (tail); | |
| 734b6cf9 | 10019 | /* Set up this stub group. */ |
| 721956f4 AM |
10020 | htab->stub_group[tail->id].link_sec = curr; |
| 10021 | } | |
| 734b6cf9 AM |
10022 | while (tail != curr && (tail = prev) != NULL); |
| 10023 | ||
| 10024 | /* But wait, there's more! Input sections up to stub_group_size | |
| 10025 | bytes before the stub section can be handled by it too. | |
| 10026 | Don't do this if we have a really large section after the | |
| 10027 | stubs, as adding more stubs increases the chance that | |
| 10028 | branches may not reach into the stub section. */ | |
| 10029 | if (!stubs_always_before_branch && !big_sec) | |
| 10030 | { | |
| 10031 | total = 0; | |
| 10032 | while (prev != NULL | |
| 10033 | && ((total += tail->output_offset - prev->output_offset) | |
| 7c8fe5c4 AM |
10034 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
| 10035 | ? stub14_group_size : stub_group_size)) | |
| 734b6cf9 AM |
10036 | && htab->stub_group[prev->id].toc_off == curr_toc) |
| 10037 | { | |
| 10038 | tail = prev; | |
| 10039 | prev = PREV_SEC (tail); | |
| 10040 | htab->stub_group[tail->id].link_sec = curr; | |
| 10041 | } | |
| 10042 | } | |
| 10043 | tail = prev; | |
| 721956f4 AM |
10044 | } |
| 10045 | } | |
| 734b6cf9 AM |
10046 | while (list-- != htab->input_list); |
| 10047 | free (htab->input_list); | |
| 721956f4 AM |
10048 | #undef PREV_SEC |
| 10049 | } | |
| 10050 | ||
| 721956f4 AM |
10051 | /* Determine and set the size of the stub section for a final link. |
| 10052 | ||
| 10053 | The basic idea here is to examine all the relocations looking for | |
| 10054 | PC-relative calls to a target that is unreachable with a "bl" | |
| 10055 | instruction. */ | |
| 10056 | ||
| b34976b6 | 10057 | bfd_boolean |
| 4ce794b7 | 10058 | ppc64_elf_size_stubs (bfd *output_bfd, |
| 4ce794b7 AM |
10059 | struct bfd_link_info *info, |
| 10060 | bfd_signed_vma group_size, | |
| 10061 | asection *(*add_stub_section) (const char *, asection *), | |
| 10062 | void (*layout_sections_again) (void)) | |
| 721956f4 AM |
10063 | { |
| 10064 | bfd_size_type stub_group_size; | |
| b34976b6 | 10065 | bfd_boolean stubs_always_before_branch; |
| 721956f4 AM |
10066 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 10067 | ||
| 10068 | /* Stash our params away. */ | |
| 721956f4 AM |
10069 | htab->add_stub_section = add_stub_section; |
| 10070 | htab->layout_sections_again = layout_sections_again; | |
| 10071 | stubs_always_before_branch = group_size < 0; | |
| 10072 | if (group_size < 0) | |
| 10073 | stub_group_size = -group_size; | |
| 10074 | else | |
| 10075 | stub_group_size = group_size; | |
| 721956f4 AM |
10076 | |
| 10077 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
| 10078 | ||
| 721956f4 AM |
10079 | while (1) |
| 10080 | { | |
| 10081 | bfd *input_bfd; | |
| 10082 | unsigned int bfd_indx; | |
| 10083 | asection *stub_sec; | |
| 721956f4 AM |
10084 | |
| 10085 | htab->stub_iteration += 1; | |
| 721956f4 AM |
10086 | |
| 10087 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
| 10088 | input_bfd != NULL; | |
| 10089 | input_bfd = input_bfd->link_next, bfd_indx++) | |
| 10090 | { | |
| 10091 | Elf_Internal_Shdr *symtab_hdr; | |
| 10092 | asection *section; | |
| 6cdc0ccc | 10093 | Elf_Internal_Sym *local_syms = NULL; |
| 721956f4 | 10094 | |
| 0c8d6e5c | 10095 | if (!is_ppc64_elf (input_bfd)) |
| 67f93c31 AM |
10096 | continue; |
| 10097 | ||
| 721956f4 | 10098 | /* We'll need the symbol table in a second. */ |
| 0ffa91dd | 10099 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 721956f4 AM |
10100 | if (symtab_hdr->sh_info == 0) |
| 10101 | continue; | |
| 10102 | ||
| 721956f4 AM |
10103 | /* Walk over each section attached to the input bfd. */ |
| 10104 | for (section = input_bfd->sections; | |
| 10105 | section != NULL; | |
| 10106 | section = section->next) | |
| 10107 | { | |
| 721956f4 | 10108 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
| 721956f4 AM |
10109 | |
| 10110 | /* If there aren't any relocs, then there's nothing more | |
| 10111 | to do. */ | |
| 10112 | if ((section->flags & SEC_RELOC) == 0 | |
| 12c0f757 AM |
10113 | || (section->flags & SEC_ALLOC) == 0 |
| 10114 | || (section->flags & SEC_LOAD) == 0 | |
| 10115 | || (section->flags & SEC_CODE) == 0 | |
| 721956f4 AM |
10116 | || section->reloc_count == 0) |
| 10117 | continue; | |
| 10118 | ||
| 10119 | /* If this section is a link-once section that will be | |
| 10120 | discarded, then don't create any stubs. */ | |
| 10121 | if (section->output_section == NULL | |
| 10122 | || section->output_section->owner != output_bfd) | |
| 10123 | continue; | |
| 10124 | ||
| 1e2f5b6e AM |
10125 | /* Get the relocs. */ |
| 10126 | internal_relocs | |
| 4ce794b7 | 10127 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
| 45d6a902 | 10128 | info->keep_memory); |
| 721956f4 | 10129 | if (internal_relocs == NULL) |
| 1e2f5b6e | 10130 | goto error_ret_free_local; |
| 721956f4 AM |
10131 | |
| 10132 | /* Now examine each relocation. */ | |
| 10133 | irela = internal_relocs; | |
| 10134 | irelaend = irela + section->reloc_count; | |
| 10135 | for (; irela < irelaend; irela++) | |
| 10136 | { | |
| 4ce794b7 AM |
10137 | enum elf_ppc64_reloc_type r_type; |
| 10138 | unsigned int r_indx; | |
| 721956f4 AM |
10139 | enum ppc_stub_type stub_type; |
| 10140 | struct ppc_stub_hash_entry *stub_entry; | |
| 8387904d | 10141 | asection *sym_sec, *code_sec; |
| e054468f | 10142 | bfd_vma sym_value, code_value; |
| 721956f4 | 10143 | bfd_vma destination; |
| 8843416a | 10144 | bfd_boolean ok_dest; |
| 721956f4 | 10145 | struct ppc_link_hash_entry *hash; |
| 8387904d | 10146 | struct ppc_link_hash_entry *fdh; |
| 411e1bfb AM |
10147 | struct elf_link_hash_entry *h; |
| 10148 | Elf_Internal_Sym *sym; | |
| 721956f4 AM |
10149 | char *stub_name; |
| 10150 | const asection *id_sec; | |
| 74f0fb50 | 10151 | struct _opd_sec_data *opd; |
| e054468f | 10152 | struct plt_entry *plt_ent; |
| 721956f4 AM |
10153 | |
| 10154 | r_type = ELF64_R_TYPE (irela->r_info); | |
| 10155 | r_indx = ELF64_R_SYM (irela->r_info); | |
| 10156 | ||
| 4ce794b7 | 10157 | if (r_type >= R_PPC64_max) |
| 721956f4 AM |
10158 | { |
| 10159 | bfd_set_error (bfd_error_bad_value); | |
| 6cdc0ccc | 10160 | goto error_ret_free_internal; |
| 721956f4 AM |
10161 | } |
| 10162 | ||
| 10163 | /* Only look for stubs on branch instructions. */ | |
| 4ce794b7 AM |
10164 | if (r_type != R_PPC64_REL24 |
| 10165 | && r_type != R_PPC64_REL14 | |
| 10166 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 10167 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 721956f4 AM |
10168 | continue; |
| 10169 | ||
| 10170 | /* Now determine the call target, its name, value, | |
| 10171 | section. */ | |
| 411e1bfb AM |
10172 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 10173 | r_indx, input_bfd)) | |
| 10174 | goto error_ret_free_internal; | |
| 10175 | hash = (struct ppc_link_hash_entry *) h; | |
| 10176 | ||
| 8843416a | 10177 | ok_dest = FALSE; |
| 8387904d | 10178 | fdh = NULL; |
| 7fe2b9a6 | 10179 | sym_value = 0; |
| 411e1bfb | 10180 | if (hash == NULL) |
| 721956f4 | 10181 | { |
| 411e1bfb | 10182 | sym_value = sym->st_value; |
| 8843416a | 10183 | ok_dest = TRUE; |
| 721956f4 | 10184 | } |
| 7fe2b9a6 AM |
10185 | else if (hash->elf.root.type == bfd_link_hash_defined |
| 10186 | || hash->elf.root.type == bfd_link_hash_defweak) | |
| 10187 | { | |
| 10188 | sym_value = hash->elf.root.u.def.value; | |
| 10189 | if (sym_sec->output_section != NULL) | |
| 10190 | ok_dest = TRUE; | |
| 10191 | } | |
| 10192 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
| 10193 | || hash->elf.root.type == bfd_link_hash_undefined) | |
| 721956f4 | 10194 | { |
| 99877b66 | 10195 | /* Recognise an old ABI func code entry sym, and |
| 7fe2b9a6 AM |
10196 | use the func descriptor sym instead if it is |
| 10197 | defined. */ | |
| ceb1f1ef | 10198 | if (hash->elf.root.root.string[0] == '.' |
| b31867b6 | 10199 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
| 8387904d | 10200 | { |
| 8387904d AM |
10201 | if (fdh->elf.root.type == bfd_link_hash_defined |
| 10202 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 10203 | { | |
| 10204 | sym_sec = fdh->elf.root.u.def.section; | |
| 10205 | sym_value = fdh->elf.root.u.def.value; | |
| 10206 | if (sym_sec->output_section != NULL) | |
| 10207 | ok_dest = TRUE; | |
| 10208 | } | |
| 99877b66 AM |
10209 | else |
| 10210 | fdh = NULL; | |
| 8387904d | 10211 | } |
| 7fe2b9a6 AM |
10212 | } |
| 10213 | else | |
| 10214 | { | |
| 10215 | bfd_set_error (bfd_error_bad_value); | |
| 10216 | goto error_ret_free_internal; | |
| 721956f4 AM |
10217 | } |
| 10218 | ||
| 8843416a AM |
10219 | destination = 0; |
| 10220 | if (ok_dest) | |
| 10221 | { | |
| 10222 | sym_value += irela->r_addend; | |
| 10223 | destination = (sym_value | |
| 10224 | + sym_sec->output_offset | |
| 10225 | + sym_sec->output_section->vma); | |
| 10226 | } | |
| 10227 | ||
| 8387904d | 10228 | code_sec = sym_sec; |
| e054468f | 10229 | code_value = sym_value; |
| 74f0fb50 AM |
10230 | opd = get_opd_info (sym_sec); |
| 10231 | if (opd != NULL) | |
| 8387904d AM |
10232 | { |
| 10233 | bfd_vma dest; | |
| 10234 | ||
| 74f0fb50 | 10235 | if (hash == NULL && opd->adjust != NULL) |
| 8387904d | 10236 | { |
| 74f0fb50 | 10237 | long adjust = opd->adjust[sym_value / 8]; |
| 8387904d AM |
10238 | if (adjust == -1) |
| 10239 | continue; | |
| e054468f | 10240 | code_value += adjust; |
| 8387904d AM |
10241 | sym_value += adjust; |
| 10242 | } | |
| 10243 | dest = opd_entry_value (sym_sec, sym_value, | |
| e054468f | 10244 | &code_sec, &code_value); |
| 8387904d AM |
10245 | if (dest != (bfd_vma) -1) |
| 10246 | { | |
| 10247 | destination = dest; | |
| 10248 | if (fdh != NULL) | |
| 10249 | { | |
| 10250 | /* Fixup old ABI sym to point at code | |
| 10251 | entry. */ | |
| 99877b66 | 10252 | hash->elf.root.type = bfd_link_hash_defweak; |
| 8387904d | 10253 | hash->elf.root.u.def.section = code_sec; |
| e054468f | 10254 | hash->elf.root.u.def.value = code_value; |
| 8387904d AM |
10255 | } |
| 10256 | } | |
| 10257 | } | |
| 10258 | ||
| 721956f4 | 10259 | /* Determine what (if any) linker stub is needed. */ |
| e054468f | 10260 | plt_ent = NULL; |
| 721956f4 | 10261 | stub_type = ppc_type_of_stub (section, irela, &hash, |
| e054468f | 10262 | &plt_ent, destination); |
| ad8e1ba5 AM |
10263 | |
| 10264 | if (stub_type != ppc_stub_plt_call) | |
| 10265 | { | |
| 10266 | /* Check whether we need a TOC adjusting stub. | |
| 10267 | Since the linker pastes together pieces from | |
| 10268 | different object files when creating the | |
| 10269 | _init and _fini functions, it may be that a | |
| 10270 | call to what looks like a local sym is in | |
| 10271 | fact a call needing a TOC adjustment. */ | |
| 8387904d AM |
10272 | if (code_sec != NULL |
| 10273 | && code_sec->output_section != NULL | |
| 10274 | && (htab->stub_group[code_sec->id].toc_off | |
| 9b5ecbd0 | 10275 | != htab->stub_group[section->id].toc_off) |
| 4c52953f AM |
10276 | && (code_sec->has_toc_reloc |
| 10277 | || code_sec->makes_toc_func_call)) | |
| ad8e1ba5 AM |
10278 | stub_type = ppc_stub_long_branch_r2off; |
| 10279 | } | |
| 10280 | ||
| 721956f4 AM |
10281 | if (stub_type == ppc_stub_none) |
| 10282 | continue; | |
| 10283 | ||
| 411e1bfb AM |
10284 | /* __tls_get_addr calls might be eliminated. */ |
| 10285 | if (stub_type != ppc_stub_plt_call | |
| 10286 | && hash != NULL | |
| 8387904d AM |
10287 | && (hash == htab->tls_get_addr |
| 10288 | || hash == htab->tls_get_addr_fd) | |
| 411e1bfb AM |
10289 | && section->has_tls_reloc |
| 10290 | && irela != internal_relocs) | |
| 10291 | { | |
| 10292 | /* Get tls info. */ | |
| e7b938ca | 10293 | char *tls_mask; |
| 411e1bfb | 10294 | |
| 3a71aa26 | 10295 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
| 411e1bfb AM |
10296 | irela - 1, input_bfd)) |
| 10297 | goto error_ret_free_internal; | |
| e7b938ca | 10298 | if (*tls_mask != 0) |
| 411e1bfb AM |
10299 | continue; |
| 10300 | } | |
| 10301 | ||
| 721956f4 AM |
10302 | /* Support for grouping stub sections. */ |
| 10303 | id_sec = htab->stub_group[section->id].link_sec; | |
| 10304 | ||
| 10305 | /* Get the name of this stub. */ | |
| 10306 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
| 10307 | if (!stub_name) | |
| 10308 | goto error_ret_free_internal; | |
| 10309 | ||
| 10310 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 10311 | stub_name, FALSE, FALSE); |
| 721956f4 AM |
10312 | if (stub_entry != NULL) |
| 10313 | { | |
| 10314 | /* The proper stub has already been created. */ | |
| 10315 | free (stub_name); | |
| 10316 | continue; | |
| 10317 | } | |
| 10318 | ||
| 10319 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
| 10320 | if (stub_entry == NULL) | |
| 10321 | { | |
| 10322 | free (stub_name); | |
| 6cdc0ccc AM |
10323 | error_ret_free_internal: |
| 10324 | if (elf_section_data (section)->relocs == NULL) | |
| 10325 | free (internal_relocs); | |
| 10326 | error_ret_free_local: | |
| 10327 | if (local_syms != NULL | |
| 10328 | && (symtab_hdr->contents | |
| 10329 | != (unsigned char *) local_syms)) | |
| 10330 | free (local_syms); | |
| b34976b6 | 10331 | return FALSE; |
| 721956f4 AM |
10332 | } |
| 10333 | ||
| ad8e1ba5 | 10334 | stub_entry->stub_type = stub_type; |
| e054468f AM |
10335 | if (stub_type != ppc_stub_plt_call) |
| 10336 | { | |
| 10337 | stub_entry->target_value = code_value; | |
| 10338 | stub_entry->target_section = code_sec; | |
| 10339 | } | |
| 10340 | else | |
| 10341 | { | |
| 10342 | stub_entry->target_value = sym_value; | |
| 10343 | stub_entry->target_section = sym_sec; | |
| 10344 | } | |
| 721956f4 | 10345 | stub_entry->h = hash; |
| e054468f | 10346 | stub_entry->plt_ent = plt_ent; |
| 411e1bfb | 10347 | stub_entry->addend = irela->r_addend; |
| ee75fd95 AM |
10348 | |
| 10349 | if (stub_entry->h != NULL) | |
| 10350 | htab->stub_globals += 1; | |
| 721956f4 AM |
10351 | } |
| 10352 | ||
| 10353 | /* We're done with the internal relocs, free them. */ | |
| 6cdc0ccc | 10354 | if (elf_section_data (section)->relocs != internal_relocs) |
| 1e2f5b6e | 10355 | free (internal_relocs); |
| 721956f4 | 10356 | } |
| 6cdc0ccc AM |
10357 | |
| 10358 | if (local_syms != NULL | |
| 10359 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 10360 | { | |
| 10361 | if (!info->keep_memory) | |
| 10362 | free (local_syms); | |
| 10363 | else | |
| 10364 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 10365 | } | |
| 721956f4 AM |
10366 | } |
| 10367 | ||
| 5c3dead3 | 10368 | /* We may have added some stubs. Find out the new size of the |
| 721956f4 AM |
10369 | stub sections. */ |
| 10370 | for (stub_sec = htab->stub_bfd->sections; | |
| 10371 | stub_sec != NULL; | |
| 10372 | stub_sec = stub_sec->next) | |
| e717da7e | 10373 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| ee75fd95 | 10374 | { |
| 5c3dead3 | 10375 | stub_sec->rawsize = stub_sec->size; |
| ee75fd95 AM |
10376 | stub_sec->size = 0; |
| 10377 | stub_sec->reloc_count = 0; | |
| 84f5d08e | 10378 | stub_sec->flags &= ~SEC_RELOC; |
| ee75fd95 | 10379 | } |
| eea6121a AM |
10380 | |
| 10381 | htab->brlt->size = 0; | |
| 84f5d08e AM |
10382 | htab->brlt->reloc_count = 0; |
| 10383 | htab->brlt->flags &= ~SEC_RELOC; | |
| ee75fd95 | 10384 | if (htab->relbrlt != NULL) |
| eea6121a | 10385 | htab->relbrlt->size = 0; |
| 721956f4 | 10386 | |
| 63bc6f6c | 10387 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
| 721956f4 | 10388 | |
| 176a0d42 AM |
10389 | if (info->emitrelocations |
| 10390 | && htab->glink != NULL && htab->glink->size != 0) | |
| 10391 | { | |
| 10392 | htab->glink->reloc_count = 1; | |
| 10393 | htab->glink->flags |= SEC_RELOC; | |
| 10394 | } | |
| 10395 | ||
| 5c3dead3 AM |
10396 | for (stub_sec = htab->stub_bfd->sections; |
| 10397 | stub_sec != NULL; | |
| 10398 | stub_sec = stub_sec->next) | |
| 10399 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
| 10400 | && stub_sec->rawsize != stub_sec->size) | |
| 10401 | break; | |
| 10402 | ||
| 10403 | /* Exit from this loop when no stubs have been added, and no stubs | |
| 10404 | have changed size. */ | |
| 10405 | if (stub_sec == NULL) | |
| 10406 | break; | |
| 10407 | ||
| 721956f4 AM |
10408 | /* Ask the linker to do its stuff. */ |
| 10409 | (*htab->layout_sections_again) (); | |
| 10410 | } | |
| 10411 | ||
| c456f082 | 10412 | /* It would be nice to strip htab->brlt from the output if the |
| afbe61cf AM |
10413 | section is empty, but it's too late. If we strip sections here, |
| 10414 | the dynamic symbol table is corrupted since the section symbol | |
| 10415 | for the stripped section isn't written. */ | |
| 721956f4 | 10416 | |
| b34976b6 | 10417 | return TRUE; |
| 721956f4 AM |
10418 | } |
| 10419 | ||
| 10420 | /* Called after we have determined section placement. If sections | |
| 805fc799 | 10421 | move, we'll be called again. Provide a value for TOCstart. */ |
| 721956f4 | 10422 | |
| 805fc799 | 10423 | bfd_vma |
| 4ce794b7 | 10424 | ppc64_elf_toc (bfd *obfd) |
| 721956f4 | 10425 | { |
| 805fc799 AM |
10426 | asection *s; |
| 10427 | bfd_vma TOCstart; | |
| 721956f4 | 10428 | |
| 805fc799 AM |
10429 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
| 10430 | order. The TOC starts where the first of these sections starts. */ | |
| 10431 | s = bfd_get_section_by_name (obfd, ".got"); | |
| e054468f | 10432 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 10433 | s = bfd_get_section_by_name (obfd, ".toc"); |
| e054468f | 10434 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 10435 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
| e054468f | 10436 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 10437 | s = bfd_get_section_by_name (obfd, ".plt"); |
| e054468f | 10438 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 AM |
10439 | { |
| 10440 | /* This may happen for | |
| 10441 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
| 10442 | .toc directive | |
| 10443 | o bad linker script | |
| 10444 | o --gc-sections and empty TOC sections | |
| 10445 | ||
| 10446 | FIXME: Warn user? */ | |
| 10447 | ||
| 10448 | /* Look for a likely section. We probably won't even be | |
| 10449 | using TOCstart. */ | |
| 10450 | for (s = obfd->sections; s != NULL; s = s->next) | |
| e054468f AM |
10451 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
| 10452 | | SEC_EXCLUDE)) | |
| 805fc799 AM |
10453 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
| 10454 | break; | |
| 721956f4 | 10455 | if (s == NULL) |
| 805fc799 | 10456 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f | 10457 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
| 805fc799 AM |
10458 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
| 10459 | break; | |
| 721956f4 | 10460 | if (s == NULL) |
| 805fc799 | 10461 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f AM |
10462 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
| 10463 | == SEC_ALLOC) | |
| 805fc799 | 10464 | break; |
| 721956f4 | 10465 | if (s == NULL) |
| 805fc799 | 10466 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f | 10467 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
| 805fc799 AM |
10468 | break; |
| 10469 | } | |
| 721956f4 | 10470 | |
| 805fc799 AM |
10471 | TOCstart = 0; |
| 10472 | if (s != NULL) | |
| 10473 | TOCstart = s->output_section->vma + s->output_offset; | |
| 721956f4 | 10474 | |
| 805fc799 | 10475 | return TOCstart; |
| 721956f4 AM |
10476 | } |
| 10477 | ||
| 10478 | /* Build all the stubs associated with the current output file. | |
| 10479 | The stubs are kept in a hash table attached to the main linker | |
| 10480 | hash table. This function is called via gldelf64ppc_finish. */ | |
| 10481 | ||
| b34976b6 | 10482 | bfd_boolean |
| 4ce794b7 AM |
10483 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
| 10484 | struct bfd_link_info *info, | |
| 10485 | char **stats) | |
| 5d1634d7 AM |
10486 | { |
| 10487 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 721956f4 | 10488 | asection *stub_sec; |
| 5d1634d7 | 10489 | bfd_byte *p; |
| e717da7e | 10490 | int stub_sec_count = 0; |
| 5d1634d7 | 10491 | |
| ad8e1ba5 | 10492 | htab->emit_stub_syms = emit_stub_syms; |
| eea6121a AM |
10493 | |
| 10494 | /* Allocate memory to hold the linker stubs. */ | |
| 721956f4 AM |
10495 | for (stub_sec = htab->stub_bfd->sections; |
| 10496 | stub_sec != NULL; | |
| 10497 | stub_sec = stub_sec->next) | |
| eea6121a AM |
10498 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
| 10499 | && stub_sec->size != 0) | |
| e717da7e | 10500 | { |
| eea6121a AM |
10501 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
| 10502 | if (stub_sec->contents == NULL) | |
| 10503 | return FALSE; | |
| 10504 | /* We want to check that built size is the same as calculated | |
| 10505 | size. rawsize is a convenient location to use. */ | |
| 10506 | stub_sec->rawsize = stub_sec->size; | |
| 10507 | stub_sec->size = 0; | |
| e717da7e | 10508 | } |
| 5d1634d7 | 10509 | |
| 23eb7e01 | 10510 | if (htab->glink != NULL && htab->glink->size != 0) |
| 5d1634d7 | 10511 | { |
| 9f951329 | 10512 | unsigned int indx; |
| ad8e1ba5 | 10513 | bfd_vma plt0; |
| 9f951329 | 10514 | |
| 721956f4 | 10515 | /* Build the .glink plt call stub. */ |
| 97b639ba AM |
10516 | if (htab->emit_stub_syms) |
| 10517 | { | |
| 10518 | struct elf_link_hash_entry *h; | |
| 468392fb AM |
10519 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
| 10520 | TRUE, FALSE, FALSE); | |
| 97b639ba AM |
10521 | if (h == NULL) |
| 10522 | return FALSE; | |
| 10523 | if (h->root.type == bfd_link_hash_new) | |
| 10524 | { | |
| 10525 | h->root.type = bfd_link_hash_defined; | |
| 10526 | h->root.u.def.section = htab->glink; | |
| ee4bf8d2 | 10527 | h->root.u.def.value = 8; |
| f5385ebf AM |
10528 | h->ref_regular = 1; |
| 10529 | h->def_regular = 1; | |
| 10530 | h->ref_regular_nonweak = 1; | |
| 10531 | h->forced_local = 1; | |
| 10532 | h->non_elf = 0; | |
| 97b639ba AM |
10533 | } |
| 10534 | } | |
| 176a0d42 AM |
10535 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
| 10536 | if (info->emitrelocations) | |
| 10537 | { | |
| 10538 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
| 10539 | if (r == NULL) | |
| 10540 | return FALSE; | |
| 10541 | r->r_offset = (htab->glink->output_offset | |
| 10542 | + htab->glink->output_section->vma); | |
| 10543 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
| 10544 | r->r_addend = plt0; | |
| 10545 | } | |
| 4ce794b7 | 10546 | p = htab->glink->contents; |
| 176a0d42 | 10547 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
| ee4bf8d2 AM |
10548 | bfd_put_64 (htab->glink->owner, plt0, p); |
| 10549 | p += 8; | |
| 10550 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
| ad8e1ba5 | 10551 | p += 4; |
| ee4bf8d2 | 10552 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
| ad8e1ba5 | 10553 | p += 4; |
| ee4bf8d2 | 10554 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
| ad8e1ba5 | 10555 | p += 4; |
| ee4bf8d2 | 10556 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
| ad8e1ba5 | 10557 | p += 4; |
| ee4bf8d2 | 10558 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
| ad8e1ba5 | 10559 | p += 4; |
| ee4bf8d2 | 10560 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
| ad8e1ba5 | 10561 | p += 4; |
| ee4bf8d2 | 10562 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
| ad8e1ba5 | 10563 | p += 4; |
| 4ce794b7 | 10564 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
| ad8e1ba5 | 10565 | p += 4; |
| 4ce794b7 | 10566 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
| ad8e1ba5 | 10567 | p += 4; |
| 4ce794b7 | 10568 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
| ad8e1ba5 | 10569 | p += 4; |
| 4ce794b7 | 10570 | bfd_put_32 (htab->glink->owner, BCTR, p); |
| ad8e1ba5 | 10571 | p += 4; |
| ee4bf8d2 AM |
10572 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
| 10573 | { | |
| 10574 | bfd_put_32 (htab->glink->owner, NOP, p); | |
| 10575 | p += 4; | |
| 10576 | } | |
| ad8e1ba5 | 10577 | |
| 9f951329 AM |
10578 | /* Build the .glink lazy link call stubs. */ |
| 10579 | indx = 0; | |
| eea6121a | 10580 | while (p < htab->glink->contents + htab->glink->size) |
| 9f951329 AM |
10581 | { |
| 10582 | if (indx < 0x8000) | |
| 10583 | { | |
| 4ce794b7 | 10584 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
| 9f951329 AM |
10585 | p += 4; |
| 10586 | } | |
| 10587 | else | |
| 10588 | { | |
| 4ce794b7 | 10589 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
| 9f951329 | 10590 | p += 4; |
| 4ce794b7 | 10591 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
| 9f951329 AM |
10592 | p += 4; |
| 10593 | } | |
| 4ce794b7 | 10594 | bfd_put_32 (htab->glink->owner, |
| ee4bf8d2 | 10595 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
| a16d5acb | 10596 | indx++; |
| 9f951329 AM |
10597 | p += 4; |
| 10598 | } | |
| eea6121a | 10599 | htab->glink->rawsize = p - htab->glink->contents; |
| 5d1634d7 | 10600 | } |
| 5d1634d7 | 10601 | |
| eea6121a | 10602 | if (htab->brlt->size != 0) |
| 721956f4 | 10603 | { |
| 4ce794b7 | 10604 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
| eea6121a | 10605 | htab->brlt->size); |
| 4ce794b7 | 10606 | if (htab->brlt->contents == NULL) |
| b34976b6 | 10607 | return FALSE; |
| 721956f4 | 10608 | } |
| ee75fd95 | 10609 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
| 63bc6f6c AM |
10610 | { |
| 10611 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
| eea6121a | 10612 | htab->relbrlt->size); |
| 63bc6f6c AM |
10613 | if (htab->relbrlt->contents == NULL) |
| 10614 | return FALSE; | |
| 10615 | } | |
| 5d1634d7 | 10616 | |
| 721956f4 AM |
10617 | /* Build the stubs as directed by the stub hash table. */ |
| 10618 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
| 5d1634d7 | 10619 | |
| aa8a7074 AM |
10620 | if (htab->relbrlt != NULL) |
| 10621 | htab->relbrlt->reloc_count = 0; | |
| 10622 | ||
| 721956f4 AM |
10623 | for (stub_sec = htab->stub_bfd->sections; |
| 10624 | stub_sec != NULL; | |
| 10625 | stub_sec = stub_sec->next) | |
| e717da7e AM |
10626 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| 10627 | { | |
| 10628 | stub_sec_count += 1; | |
| eea6121a | 10629 | if (stub_sec->rawsize != stub_sec->size) |
| e717da7e AM |
10630 | break; |
| 10631 | } | |
| 5d1634d7 | 10632 | |
| 721956f4 | 10633 | if (stub_sec != NULL |
| eea6121a | 10634 | || htab->glink->rawsize != htab->glink->size) |
| 5d1634d7 | 10635 | { |
| b34976b6 | 10636 | htab->stub_error = TRUE; |
| 721956f4 | 10637 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
| 5d1634d7 | 10638 | } |
| 721956f4 | 10639 | |
| d2a300cf AM |
10640 | if (htab->stub_error) |
| 10641 | return FALSE; | |
| 10642 | ||
| 10643 | if (stats != NULL) | |
| 10644 | { | |
| 10645 | *stats = bfd_malloc (500); | |
| 10646 | if (*stats == NULL) | |
| 10647 | return FALSE; | |
| 10648 | ||
| ee75fd95 | 10649 | sprintf (*stats, _("linker stubs in %u group%s\n" |
| d2a300cf AM |
10650 | " branch %lu\n" |
| 10651 | " toc adjust %lu\n" | |
| 10652 | " long branch %lu\n" | |
| 10653 | " long toc adj %lu\n" | |
| 10654 | " plt call %lu"), | |
| e717da7e | 10655 | stub_sec_count, |
| ee75fd95 | 10656 | stub_sec_count == 1 ? "" : "s", |
| 4ce794b7 AM |
10657 | htab->stub_count[ppc_stub_long_branch - 1], |
| 10658 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
| 10659 | htab->stub_count[ppc_stub_plt_branch - 1], | |
| 10660 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
| 10661 | htab->stub_count[ppc_stub_plt_call - 1]); | |
| d2a300cf AM |
10662 | } |
| 10663 | return TRUE; | |
| 5bd4f169 AM |
10664 | } |
| 10665 | ||
| 99877b66 AM |
10666 | /* This function undoes the changes made by add_symbol_adjust. */ |
| 10667 | ||
| 10668 | static bfd_boolean | |
| 10669 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 10670 | { | |
| 10671 | struct ppc_link_hash_entry *eh; | |
| 10672 | ||
| 10673 | if (h->root.type == bfd_link_hash_indirect) | |
| 10674 | return TRUE; | |
| 10675 | ||
| 10676 | if (h->root.type == bfd_link_hash_warning) | |
| 10677 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 10678 | ||
| 10679 | eh = (struct ppc_link_hash_entry *) h; | |
| 10680 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
| 10681 | return TRUE; | |
| 10682 | ||
| 10683 | eh->elf.root.type = bfd_link_hash_undefined; | |
| 10684 | return TRUE; | |
| 10685 | } | |
| 10686 | ||
| 10687 | void | |
| 10688 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
| 10689 | { | |
| 10690 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 10691 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
| 10692 | } | |
| 10693 | ||
| 60124e18 AM |
10694 | /* What to do when ld finds relocations against symbols defined in |
| 10695 | discarded sections. */ | |
| 10696 | ||
| 10697 | static unsigned int | |
| 10698 | ppc64_elf_action_discarded (asection *sec) | |
| 10699 | { | |
| 10700 | if (strcmp (".opd", sec->name) == 0) | |
| 10701 | return 0; | |
| 10702 | ||
| 10703 | if (strcmp (".toc", sec->name) == 0) | |
| 10704 | return 0; | |
| 10705 | ||
| bce50a28 JJ |
10706 | if (strcmp (".toc1", sec->name) == 0) |
| 10707 | return 0; | |
| 10708 | ||
| 60124e18 AM |
10709 | return _bfd_elf_default_action_discarded (sec); |
| 10710 | } | |
| 10711 | ||
| 5bd4f169 AM |
10712 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
| 10713 | to handle the relocations for a section. | |
| 10714 | ||
| 10715 | The relocs are always passed as Rela structures; if the section | |
| 10716 | actually uses Rel structures, the r_addend field will always be | |
| 10717 | zero. | |
| 10718 | ||
| 10719 | This function is responsible for adjust the section contents as | |
| 10720 | necessary, and (if using Rela relocs and generating a | |
| 1049f94e | 10721 | relocatable output file) adjusting the reloc addend as |
| 5bd4f169 AM |
10722 | necessary. |
| 10723 | ||
| 10724 | This function does not have to worry about setting the reloc | |
| 10725 | address or the reloc symbol index. | |
| 10726 | ||
| 10727 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
| 10728 | ||
| 10729 | LOCAL_SECTIONS is an array giving the section in the input file | |
| 10730 | corresponding to the st_shndx field of each local symbol. | |
| 10731 | ||
| 10732 | The global hash table entry for the global symbols can be found | |
| 10733 | via elf_sym_hashes (input_bfd). | |
| 10734 | ||
| 1049f94e | 10735 | When generating relocatable output, this function must handle |
| 5bd4f169 AM |
10736 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 10737 | going to be the section symbol corresponding to the output | |
| 10738 | section, which means that the addend must be adjusted | |
| 10739 | accordingly. */ | |
| 10740 | ||
| b34976b6 | 10741 | static bfd_boolean |
| 4ce794b7 AM |
10742 | ppc64_elf_relocate_section (bfd *output_bfd, |
| 10743 | struct bfd_link_info *info, | |
| 10744 | bfd *input_bfd, | |
| 10745 | asection *input_section, | |
| 10746 | bfd_byte *contents, | |
| 10747 | Elf_Internal_Rela *relocs, | |
| 10748 | Elf_Internal_Sym *local_syms, | |
| 10749 | asection **local_sections) | |
| 5bd4f169 | 10750 | { |
| 65f38f15 | 10751 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
10752 | Elf_Internal_Shdr *symtab_hdr; |
| 10753 | struct elf_link_hash_entry **sym_hashes; | |
| 5bd4f169 AM |
10754 | Elf_Internal_Rela *rel; |
| 10755 | Elf_Internal_Rela *relend; | |
| 411e1bfb AM |
10756 | Elf_Internal_Rela outrel; |
| 10757 | bfd_byte *loc; | |
| 411e1bfb | 10758 | struct got_entry **local_got_ents; |
| 5bd4f169 | 10759 | bfd_vma TOCstart; |
| b34976b6 AM |
10760 | bfd_boolean ret = TRUE; |
| 10761 | bfd_boolean is_opd; | |
| 96e0dda4 | 10762 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
| b34976b6 | 10763 | bfd_boolean is_power4 = FALSE; |
| 4fe5ca5b | 10764 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
| 5bd4f169 | 10765 | |
| 65f38f15 | 10766 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 10767 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
10768 | ppc_howto_init (); |
| 10769 | ||
| 65f38f15 | 10770 | htab = ppc_hash_table (info); |
| ee75fd95 AM |
10771 | |
| 10772 | /* Don't relocate stub sections. */ | |
| 10773 | if (input_section->owner == htab->stub_bfd) | |
| 10774 | return TRUE; | |
| 10775 | ||
| 0c8d6e5c | 10776 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
| 0ffa91dd | 10777 | |
| 411e1bfb | 10778 | local_got_ents = elf_local_got_ents (input_bfd); |
| 5bd4f169 | 10779 | TOCstart = elf_gp (output_bfd); |
| 0ffa91dd | 10780 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 5bd4f169 | 10781 | sym_hashes = elf_sym_hashes (input_bfd); |
| 7c8fe5c4 | 10782 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
| 65f38f15 | 10783 | |
| 5bd4f169 AM |
10784 | rel = relocs; |
| 10785 | relend = relocs + input_section->reloc_count; | |
| 10786 | for (; rel < relend; rel++) | |
| 10787 | { | |
| 04c9666a | 10788 | enum elf_ppc64_reloc_type r_type; |
| 4cc603a5 | 10789 | bfd_vma addend, orig_addend; |
| 5bd4f169 AM |
10790 | bfd_reloc_status_type r; |
| 10791 | Elf_Internal_Sym *sym; | |
| 10792 | asection *sec; | |
| 039b3fef AM |
10793 | struct elf_link_hash_entry *h_elf; |
| 10794 | struct ppc_link_hash_entry *h; | |
| 10795 | struct ppc_link_hash_entry *fdh; | |
| 5bd4f169 | 10796 | const char *sym_name; |
| 0d4792f7 | 10797 | unsigned long r_symndx, toc_symndx; |
| 3a71aa26 | 10798 | bfd_vma toc_addend; |
| 951fd09b | 10799 | char tls_mask, tls_gd, tls_type; |
| 0d4792f7 | 10800 | char sym_type; |
| 5bd4f169 | 10801 | bfd_vma relocation; |
| b34976b6 AM |
10802 | bfd_boolean unresolved_reloc; |
| 10803 | bfd_boolean warned; | |
| 50bc7936 | 10804 | unsigned long insn, mask; |
| 721956f4 AM |
10805 | struct ppc_stub_hash_entry *stub_entry; |
| 10806 | bfd_vma max_br_offset; | |
| 10807 | bfd_vma from; | |
| 5bd4f169 | 10808 | |
| 4ce794b7 | 10809 | r_type = ELF64_R_TYPE (rel->r_info); |
| 5bd4f169 | 10810 | r_symndx = ELF64_R_SYM (rel->r_info); |
| ee87f2da AM |
10811 | |
| 10812 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
| 10813 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
| 10814 | proper TOC base to use. */ | |
| 10815 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
| 10816 | && rel != relocs | |
| 10817 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
| 10818 | && is_opd) | |
| 10819 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
| 10820 | ||
| 4ce794b7 AM |
10821 | sym = NULL; |
| 10822 | sec = NULL; | |
| 039b3fef | 10823 | h_elf = NULL; |
| 4ce794b7 | 10824 | sym_name = NULL; |
| b34976b6 AM |
10825 | unresolved_reloc = FALSE; |
| 10826 | warned = FALSE; | |
| 4cc603a5 | 10827 | orig_addend = rel->r_addend; |
| 65f38f15 | 10828 | |
| 0b13192e | 10829 | if (r_symndx < symtab_hdr->sh_info) |
| 5bd4f169 AM |
10830 | { |
| 10831 | /* It's a local symbol. */ | |
| 74f0fb50 | 10832 | struct _opd_sec_data *opd; |
| 4025353c | 10833 | |
| 5bd4f169 AM |
10834 | sym = local_syms + r_symndx; |
| 10835 | sec = local_sections[r_symndx]; | |
| 26c61ae5 | 10836 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
| 0d4792f7 | 10837 | sym_type = ELF64_ST_TYPE (sym->st_info); |
| 8517fae7 | 10838 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 74f0fb50 AM |
10839 | opd = get_opd_info (sec); |
| 10840 | if (opd != NULL && opd->adjust != NULL) | |
| 1e2f5b6e | 10841 | { |
| 74f0fb50 | 10842 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
| 4025353c AM |
10843 | if (adjust == -1) |
| 10844 | relocation = 0; | |
| 10845 | else | |
| 4cc603a5 AM |
10846 | { |
| 10847 | /* If this is a relocation against the opd section sym | |
| 10848 | and we have edited .opd, adjust the reloc addend so | |
| 10849 | that ld -r and ld --emit-relocs output is correct. | |
| 10850 | If it is a reloc against some other .opd symbol, | |
| 10851 | then the symbol value will be adjusted later. */ | |
| 10852 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
| 10853 | rel->r_addend += adjust; | |
| 10854 | else | |
| 10855 | relocation += adjust; | |
| 10856 | } | |
| 1e2f5b6e | 10857 | } |
| 5bd4f169 AM |
10858 | } |
| 10859 | else | |
| 10860 | { | |
| b2a8e766 AM |
10861 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 10862 | r_symndx, symtab_hdr, sym_hashes, | |
| 039b3fef | 10863 | h_elf, sec, relocation, |
| b2a8e766 | 10864 | unresolved_reloc, warned); |
| 039b3fef AM |
10865 | sym_name = h_elf->root.root.string; |
| 10866 | sym_type = h_elf->type; | |
| 5bd4f169 | 10867 | } |
| 039b3fef | 10868 | h = (struct ppc_link_hash_entry *) h_elf; |
| 5bd4f169 | 10869 | |
| ab96bf03 AM |
10870 | if (sec != NULL && elf_discarded_section (sec)) |
| 10871 | { | |
| 10872 | /* For relocs against symbols from removed linkonce sections, | |
| 10873 | or sections discarded by a linker script, we just want the | |
| 10874 | section contents zeroed. Avoid any special processing. */ | |
| 10875 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
| 10876 | contents + rel->r_offset); | |
| 10877 | rel->r_info = 0; | |
| 10878 | rel->r_addend = 0; | |
| 10879 | continue; | |
| 10880 | } | |
| 10881 | ||
| 10882 | if (info->relocatable) | |
| 10883 | continue; | |
| 10884 | ||
| 951fd09b AM |
10885 | /* TLS optimizations. Replace instruction sequences and relocs |
| 10886 | based on information we collected in tls_optimize. We edit | |
| 10887 | RELOCS so that --emit-relocs will output something sensible | |
| 10888 | for the final instruction stream. */ | |
| 10889 | tls_mask = 0; | |
| 10890 | tls_gd = 0; | |
| 0d4792f7 | 10891 | toc_symndx = 0; |
| 727fc41e AM |
10892 | if (h != NULL) |
| 10893 | tls_mask = h->tls_mask; | |
| 10894 | else if (local_got_ents != NULL) | |
| 411e1bfb | 10895 | { |
| e054468f AM |
10896 | struct plt_entry **local_plt = (struct plt_entry **) |
| 10897 | (local_got_ents + symtab_hdr->sh_info); | |
| 10898 | char *lgot_masks = (char *) | |
| 10899 | (local_plt + symtab_hdr->sh_info); | |
| 727fc41e AM |
10900 | tls_mask = lgot_masks[r_symndx]; |
| 10901 | } | |
| 10902 | if (tls_mask == 0 | |
| 10903 | && (r_type == R_PPC64_TLS | |
| 10904 | || r_type == R_PPC64_TLSGD | |
| 10905 | || r_type == R_PPC64_TLSLD)) | |
| 10906 | { | |
| 10907 | /* Check for toc tls entries. */ | |
| 10908 | char *toc_tls; | |
| 0d4792f7 | 10909 | |
| 727fc41e AM |
10910 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 10911 | &local_syms, rel, input_bfd)) | |
| 10912 | return FALSE; | |
| 0d4792f7 | 10913 | |
| 727fc41e AM |
10914 | if (toc_tls) |
| 10915 | tls_mask = *toc_tls; | |
| 0d4792f7 AM |
10916 | } |
| 10917 | ||
| 10918 | /* Check that tls relocs are used with tls syms, and non-tls | |
| 10919 | relocs are used with non-tls syms. */ | |
| 10920 | if (r_symndx != 0 | |
| 10921 | && r_type != R_PPC64_NONE | |
| 10922 | && (h == NULL | |
| 039b3fef AM |
10923 | || h->elf.root.type == bfd_link_hash_defined |
| 10924 | || h->elf.root.type == bfd_link_hash_defweak) | |
| 1d483afe AM |
10925 | && (IS_PPC64_TLS_RELOC (r_type) |
| 10926 | != (sym_type == STT_TLS | |
| 10927 | || (sym_type == STT_SECTION | |
| 10928 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
| 0d4792f7 | 10929 | { |
| 727fc41e AM |
10930 | if (tls_mask != 0 |
| 10931 | && (r_type == R_PPC64_TLS | |
| 10932 | || r_type == R_PPC64_TLSGD | |
| 10933 | || r_type == R_PPC64_TLSLD)) | |
| 0d4792f7 AM |
10934 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
| 10935 | ; | |
| 10936 | else | |
| 10937 | (*_bfd_error_handler) | |
| 1d483afe | 10938 | (!IS_PPC64_TLS_RELOC (r_type) |
| d003868e AM |
10939 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
| 10940 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
| 10941 | input_bfd, | |
| 10942 | input_section, | |
| 0d4792f7 AM |
10943 | (long) rel->r_offset, |
| 10944 | ppc64_elf_howto_table[r_type]->name, | |
| 10945 | sym_name); | |
| 411e1bfb AM |
10946 | } |
| 10947 | ||
| 10948 | /* Ensure reloc mapping code below stays sane. */ | |
| 10949 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
| 10950 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
| 10951 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
| 10952 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
| 10953 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
| 10954 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
| 10955 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
| 10956 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
| 10957 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
| 10958 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
| 10959 | abort (); | |
| 0d4792f7 | 10960 | |
| 411e1bfb AM |
10961 | switch (r_type) |
| 10962 | { | |
| 10963 | default: | |
| 411e1bfb AM |
10964 | break; |
| 10965 | ||
| 10966 | case R_PPC64_TOC16: | |
| 10967 | case R_PPC64_TOC16_LO: | |
| 10968 | case R_PPC64_TOC16_DS: | |
| 10969 | case R_PPC64_TOC16_LO_DS: | |
| 411e1bfb AM |
10970 | { |
| 10971 | /* Check for toc tls entries. */ | |
| 10972 | char *toc_tls; | |
| 951fd09b | 10973 | int retval; |
| 411e1bfb | 10974 | |
| 3a71aa26 AM |
10975 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 10976 | &local_syms, rel, input_bfd); | |
| 951fd09b | 10977 | if (retval == 0) |
| 411e1bfb AM |
10978 | return FALSE; |
| 10979 | ||
| 10980 | if (toc_tls) | |
| 10981 | { | |
| 951fd09b | 10982 | tls_mask = *toc_tls; |
| 411e1bfb AM |
10983 | if (r_type == R_PPC64_TOC16_DS |
| 10984 | || r_type == R_PPC64_TOC16_LO_DS) | |
| 81407a69 AM |
10985 | { |
| 10986 | if (tls_mask != 0 | |
| 10987 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
| 10988 | goto toctprel; | |
| 10989 | } | |
| 411e1bfb | 10990 | else |
| 951fd09b AM |
10991 | { |
| 10992 | /* If we found a GD reloc pair, then we might be | |
| 10993 | doing a GD->IE transition. */ | |
| 10994 | if (retval == 2) | |
| 10995 | { | |
| 10996 | tls_gd = TLS_TPRELGD; | |
| 10997 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 10998 | goto tls_ldgd_opt; |
| 951fd09b AM |
10999 | } |
| 11000 | else if (retval == 3) | |
| 11001 | { | |
| 11002 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 102890f0 | 11003 | goto tls_ldgd_opt; |
| 951fd09b AM |
11004 | } |
| 11005 | } | |
| 411e1bfb AM |
11006 | } |
| 11007 | } | |
| 11008 | break; | |
| 11009 | ||
| 11010 | case R_PPC64_GOT_TPREL16_DS: | |
| 11011 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 951fd09b AM |
11012 | if (tls_mask != 0 |
| 11013 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 11014 | { |
| 81407a69 | 11015 | toctprel: |
| 4fe5ca5b | 11016 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
| 411e1bfb AM |
11017 | insn &= 31 << 21; |
| 11018 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
| 4fe5ca5b | 11019 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
| 411e1bfb | 11020 | r_type = R_PPC64_TPREL16_HA; |
| 0d4792f7 AM |
11021 | if (toc_symndx != 0) |
| 11022 | { | |
| 11023 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 11024 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
11025 | /* We changed the symbol. Start over in order to |
| 11026 | get h, sym, sec etc. right. */ | |
| 11027 | rel--; | |
| 11028 | continue; | |
| 11029 | } | |
| 11030 | else | |
| 11031 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
11032 | } |
| 11033 | break; | |
| 11034 | ||
| 11035 | case R_PPC64_TLS: | |
| 951fd09b AM |
11036 | if (tls_mask != 0 |
| 11037 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 11038 | { |
| 411e1bfb | 11039 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
| 2d0f3896 AM |
11040 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
| 11041 | if (insn == 0) | |
| 411e1bfb | 11042 | abort (); |
| 411e1bfb | 11043 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
| 411e1bfb | 11044 | /* Was PPC64_TLS which sits on insn boundary, now |
| 4fe5ca5b GM |
11045 | PPC64_TPREL16_LO which is at low-order half-word. */ |
| 11046 | rel->r_offset += d_offset; | |
| 0d4792f7 AM |
11047 | r_type = R_PPC64_TPREL16_LO; |
| 11048 | if (toc_symndx != 0) | |
| 11049 | { | |
| 11050 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 11051 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
11052 | /* We changed the symbol. Start over in order to |
| 11053 | get h, sym, sec etc. right. */ | |
| 11054 | rel--; | |
| 11055 | continue; | |
| 11056 | } | |
| 11057 | else | |
| 11058 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
11059 | } |
| 11060 | break; | |
| 11061 | ||
| 411e1bfb AM |
11062 | case R_PPC64_GOT_TLSGD16_HI: |
| 11063 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b AM |
11064 | tls_gd = TLS_TPRELGD; |
| 11065 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 11066 | goto tls_gdld_hi; | |
| 11067 | break; | |
| 11068 | ||
| 411e1bfb AM |
11069 | case R_PPC64_GOT_TLSLD16_HI: |
| 11070 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 11071 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
| 411e1bfb | 11072 | { |
| 951fd09b AM |
11073 | tls_gdld_hi: |
| 11074 | if ((tls_mask & tls_gd) != 0) | |
| 11075 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 11076 | + R_PPC64_GOT_TPREL16_DS); | |
| 11077 | else | |
| 411e1bfb | 11078 | { |
| 951fd09b | 11079 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
| 4fe5ca5b | 11080 | rel->r_offset -= d_offset; |
| 951fd09b | 11081 | r_type = R_PPC64_NONE; |
| 411e1bfb | 11082 | } |
| 951fd09b | 11083 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb AM |
11084 | } |
| 11085 | break; | |
| 11086 | ||
| 951fd09b AM |
11087 | case R_PPC64_GOT_TLSGD16: |
| 11088 | case R_PPC64_GOT_TLSGD16_LO: | |
| 11089 | tls_gd = TLS_TPRELGD; | |
| 11090 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 11091 | goto tls_ldgd_opt; |
| 951fd09b | 11092 | break; |
| 411e1bfb | 11093 | |
| 951fd09b AM |
11094 | case R_PPC64_GOT_TLSLD16: |
| 11095 | case R_PPC64_GOT_TLSLD16_LO: | |
| 11096 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 11097 | { | |
| 3a71aa26 | 11098 | unsigned int insn1, insn2, insn3; |
| 102890f0 AM |
11099 | bfd_vma offset; |
| 11100 | ||
| 11101 | tls_ldgd_opt: | |
| 727fc41e AM |
11102 | offset = (bfd_vma) -1; |
| 11103 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
| 11104 | __tls_get_addr calls, we must trust that the call | |
| 11105 | stays with its arg setup insns, ie. that the next | |
| 11106 | reloc is the __tls_get_addr call associated with | |
| 11107 | the current reloc. Edit both insns. */ | |
| 11108 | if (input_section->has_tls_get_addr_call | |
| 11109 | && rel + 1 < relend | |
| 11110 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
| 11111 | htab->tls_get_addr, | |
| 11112 | htab->tls_get_addr_fd)) | |
| 11113 | offset = rel[1].r_offset; | |
| 102890f0 | 11114 | if ((tls_mask & tls_gd) != 0) |
| 411e1bfb | 11115 | { |
| 102890f0 | 11116 | /* IE */ |
| 3a71aa26 AM |
11117 | insn1 = bfd_get_32 (output_bfd, |
| 11118 | contents + rel->r_offset - d_offset); | |
| 102890f0 AM |
11119 | insn1 &= (1 << 26) - (1 << 2); |
| 11120 | insn1 |= 58 << 26; /* ld */ | |
| 11121 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 727fc41e | 11122 | if (offset != (bfd_vma) -1) |
| f58d5a2d | 11123 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 102890f0 AM |
11124 | if ((tls_mask & TLS_EXPLICIT) == 0) |
| 11125 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 11126 | + R_PPC64_GOT_TPREL16_DS); | |
| 411e1bfb | 11127 | else |
| 102890f0 AM |
11128 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
| 11129 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 11130 | } | |
| 11131 | else | |
| 11132 | { | |
| 11133 | /* LE */ | |
| 11134 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
| 11135 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 11136 | if (tls_gd == 0) | |
| 951fd09b | 11137 | { |
| 102890f0 | 11138 | /* Was an LD reloc. */ |
| 1d483afe AM |
11139 | if (toc_symndx) |
| 11140 | sec = local_sections[toc_symndx]; | |
| 11141 | for (r_symndx = 0; | |
| 11142 | r_symndx < symtab_hdr->sh_info; | |
| 11143 | r_symndx++) | |
| 11144 | if (local_sections[r_symndx] == sec) | |
| 11145 | break; | |
| 11146 | if (r_symndx >= symtab_hdr->sh_info) | |
| 11147 | r_symndx = 0; | |
| 102890f0 | 11148 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
| 1d483afe AM |
11149 | if (r_symndx != 0) |
| 11150 | rel->r_addend -= (local_syms[r_symndx].st_value | |
| 11151 | + sec->output_offset | |
| 11152 | + sec->output_section->vma); | |
| 951fd09b | 11153 | } |
| 102890f0 | 11154 | else if (toc_symndx != 0) |
| 3a71aa26 AM |
11155 | { |
| 11156 | r_symndx = toc_symndx; | |
| 11157 | rel->r_addend = toc_addend; | |
| 11158 | } | |
| 102890f0 AM |
11159 | r_type = R_PPC64_TPREL16_HA; |
| 11160 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 727fc41e AM |
11161 | if (offset != (bfd_vma) -1) |
| 11162 | { | |
| 11163 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
| 11164 | R_PPC64_TPREL16_LO); | |
| 11165 | rel[1].r_offset = offset + d_offset; | |
| 11166 | rel[1].r_addend = rel->r_addend; | |
| 11167 | } | |
| 102890f0 | 11168 | } |
| 3a71aa26 AM |
11169 | bfd_put_32 (output_bfd, insn1, |
| 11170 | contents + rel->r_offset - d_offset); | |
| 727fc41e AM |
11171 | if (offset != (bfd_vma) -1) |
| 11172 | { | |
| 11173 | insn3 = bfd_get_32 (output_bfd, | |
| 11174 | contents + offset + 4); | |
| 11175 | if (insn3 == NOP | |
| 11176 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 11177 | { | |
| 11178 | rel[1].r_offset += 4; | |
| 11179 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
| 11180 | insn2 = NOP; | |
| 11181 | } | |
| 11182 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
| 11183 | } | |
| 11184 | if ((tls_mask & tls_gd) == 0 | |
| 11185 | && (tls_gd == 0 || toc_symndx != 0)) | |
| 11186 | { | |
| 11187 | /* We changed the symbol. Start over in order | |
| 11188 | to get h, sym, sec etc. right. */ | |
| 11189 | rel--; | |
| 11190 | continue; | |
| 11191 | } | |
| 11192 | } | |
| 11193 | break; | |
| 11194 | ||
| 11195 | case R_PPC64_TLSGD: | |
| 11196 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 11197 | { | |
| 11198 | unsigned int insn2, insn3; | |
| 11199 | bfd_vma offset = rel->r_offset; | |
| 11200 | ||
| 11201 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 11202 | { | |
| 11203 | /* IE */ | |
| 11204 | r_type = R_PPC64_NONE; | |
| 11205 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 11206 | } | |
| 11207 | else | |
| 11208 | { | |
| 11209 | /* LE */ | |
| 11210 | if (toc_symndx != 0) | |
| 11211 | { | |
| 11212 | r_symndx = toc_symndx; | |
| 11213 | rel->r_addend = toc_addend; | |
| 11214 | } | |
| 11215 | r_type = R_PPC64_TPREL16_LO; | |
| 11216 | rel->r_offset = offset + d_offset; | |
| 11217 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 11218 | } | |
| 11219 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 11220 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 11221 | BFD_ASSERT (offset == rel[1].r_offset); | |
| f58d5a2d | 11222 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 3a71aa26 AM |
11223 | insn3 = bfd_get_32 (output_bfd, |
| 11224 | contents + offset + 4); | |
| 102890f0 AM |
11225 | if (insn3 == NOP |
| 11226 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 11227 | { | |
| 727fc41e | 11228 | rel->r_offset += 4; |
| 3a71aa26 AM |
11229 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
| 11230 | insn2 = NOP; | |
| 102890f0 | 11231 | } |
| 102890f0 | 11232 | bfd_put_32 (output_bfd, insn2, contents + offset); |
| 727fc41e | 11233 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
| 102890f0 | 11234 | { |
| 102890f0 AM |
11235 | rel--; |
| 11236 | continue; | |
| 411e1bfb | 11237 | } |
| 411e1bfb | 11238 | } |
| 411e1bfb AM |
11239 | break; |
| 11240 | ||
| 727fc41e AM |
11241 | case R_PPC64_TLSLD: |
| 11242 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 11243 | { | |
| 11244 | unsigned int insn2, insn3; | |
| 11245 | bfd_vma offset = rel->r_offset; | |
| 11246 | ||
| 11247 | if (toc_symndx) | |
| 11248 | sec = local_sections[toc_symndx]; | |
| 11249 | for (r_symndx = 0; | |
| 11250 | r_symndx < symtab_hdr->sh_info; | |
| 11251 | r_symndx++) | |
| 11252 | if (local_sections[r_symndx] == sec) | |
| 11253 | break; | |
| 11254 | if (r_symndx >= symtab_hdr->sh_info) | |
| 11255 | r_symndx = 0; | |
| 11256 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
| 11257 | if (r_symndx != 0) | |
| 11258 | rel->r_addend -= (local_syms[r_symndx].st_value | |
| 11259 | + sec->output_offset | |
| 11260 | + sec->output_section->vma); | |
| 11261 | ||
| 11262 | r_type = R_PPC64_TPREL16_LO; | |
| 11263 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 11264 | rel->r_offset = offset + d_offset; | |
| 11265 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 11266 | BFD_ASSERT (offset == rel[1].r_offset); | |
| f58d5a2d | 11267 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 727fc41e AM |
11268 | insn2 = 0x38630000; /* addi 3,3,0 */ |
| 11269 | insn3 = bfd_get_32 (output_bfd, | |
| 11270 | contents + offset + 4); | |
| 11271 | if (insn3 == NOP | |
| 11272 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 11273 | { | |
| 11274 | rel->r_offset += 4; | |
| 11275 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
| 11276 | insn2 = NOP; | |
| 11277 | } | |
| 11278 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
| 11279 | rel--; | |
| 11280 | continue; | |
| 11281 | } | |
| 11282 | break; | |
| 11283 | ||
| 411e1bfb | 11284 | case R_PPC64_DTPMOD64: |
| 951fd09b AM |
11285 | if (rel + 1 < relend |
| 11286 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 11287 | && rel[1].r_offset == rel->r_offset + 8) | |
| 411e1bfb | 11288 | { |
| 951fd09b AM |
11289 | if ((tls_mask & TLS_GD) == 0) |
| 11290 | { | |
| 11291 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
| 11292 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 11293 | r_type = R_PPC64_TPREL64; | |
| 11294 | else | |
| 11295 | { | |
| 4ce794b7 | 11296 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 951fd09b AM |
11297 | r_type = R_PPC64_NONE; |
| 11298 | } | |
| 11299 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 11300 | } | |
| 11301 | } | |
| 11302 | else | |
| 11303 | { | |
| 11304 | if ((tls_mask & TLS_LD) == 0) | |
| 411e1bfb | 11305 | { |
| 4ce794b7 | 11306 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 411e1bfb | 11307 | r_type = R_PPC64_NONE; |
| 951fd09b | 11308 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb | 11309 | } |
| 411e1bfb AM |
11310 | } |
| 11311 | break; | |
| 11312 | ||
| 11313 | case R_PPC64_TPREL64: | |
| 951fd09b | 11314 | if ((tls_mask & TLS_TPREL) == 0) |
| 411e1bfb AM |
11315 | { |
| 11316 | r_type = R_PPC64_NONE; | |
| 11317 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 11318 | } | |
| 11319 | break; | |
| 11320 | } | |
| 11321 | ||
| 11322 | /* Handle other relocations that tweak non-addend part of insn. */ | |
| 86c76c7b | 11323 | insn = 0; |
| b25116a9 AM |
11324 | max_br_offset = 1 << 25; |
| 11325 | addend = rel->r_addend; | |
| 65f38f15 | 11326 | switch (r_type) |
| 5bd4f169 AM |
11327 | { |
| 11328 | default: | |
| 65f38f15 | 11329 | break; |
| 5bd4f169 | 11330 | |
| 65f38f15 AM |
11331 | /* Branch taken prediction relocations. */ |
| 11332 | case R_PPC64_ADDR14_BRTAKEN: | |
| 11333 | case R_PPC64_REL14_BRTAKEN: | |
| cedb70c5 KH |
11334 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 11335 | /* Fall thru. */ | |
| 65f38f15 | 11336 | |
| 86c76c7b | 11337 | /* Branch not taken prediction relocations. */ |
| 65f38f15 AM |
11338 | case R_PPC64_ADDR14_BRNTAKEN: |
| 11339 | case R_PPC64_REL14_BRNTAKEN: | |
| 411e1bfb AM |
11340 | insn |= bfd_get_32 (output_bfd, |
| 11341 | contents + rel->r_offset) & ~(0x01 << 21); | |
| b25116a9 | 11342 | /* Fall thru. */ |
| 86c76c7b | 11343 | |
| b25116a9 AM |
11344 | case R_PPC64_REL14: |
| 11345 | max_br_offset = 1 << 15; | |
| 11346 | /* Fall thru. */ | |
| 5bd4f169 | 11347 | |
| 65f38f15 | 11348 | case R_PPC64_REL24: |
| ad8e1ba5 AM |
11349 | /* Calls to functions with a different TOC, such as calls to |
| 11350 | shared objects, need to alter the TOC pointer. This is | |
| 11351 | done using a linkage stub. A REL24 branching to these | |
| 11352 | linkage stubs needs to be followed by a nop, as the nop | |
| 11353 | will be replaced with an instruction to restore the TOC | |
| 11354 | base pointer. */ | |
| b25116a9 | 11355 | stub_entry = NULL; |
| 8387904d | 11356 | fdh = h; |
| b31867b6 AM |
11357 | if (h != NULL |
| 11358 | && h->oh != NULL | |
| 11359 | && h->oh->is_func_descriptor) | |
| 11360 | fdh = ppc_follow_link (h->oh); | |
| 11361 | if (((fdh != NULL | |
| 11362 | && fdh->elf.plt.plist != NULL) | |
| 8387904d | 11363 | || (sec != NULL |
| ad8e1ba5 | 11364 | && sec->output_section != NULL |
| b25116a9 | 11365 | && sec->id <= htab->top_id |
| ad8e1ba5 | 11366 | && (htab->stub_group[sec->id].toc_off |
| 25f23106 AM |
11367 | != htab->stub_group[input_section->id].toc_off)) |
| 11368 | || (h == NULL | |
| 11369 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
| 721956f4 | 11370 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
| ad8e1ba5 AM |
11371 | rel, htab)) != NULL |
| 11372 | && (stub_entry->stub_type == ppc_stub_plt_call | |
| 11373 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
| 11374 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
| 41bd81ab | 11375 | { |
| b25116a9 | 11376 | bfd_boolean can_plt_call = FALSE; |
| 721956f4 | 11377 | |
| eea6121a | 11378 | if (rel->r_offset + 8 <= input_section->size) |
| 41bd81ab | 11379 | { |
| b25116a9 AM |
11380 | unsigned long nop; |
| 11381 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
| 11382 | if (nop == NOP | |
| 11383 | || nop == CROR_151515 || nop == CROR_313131) | |
| 41bd81ab | 11384 | { |
| a7f2871e AM |
11385 | if (h != NULL |
| 11386 | && (h == htab->tls_get_addr_fd | |
| 11387 | || h == htab->tls_get_addr) | |
| 11388 | && !htab->no_tls_get_addr_opt) | |
| 11389 | { | |
| 11390 | /* Special stub used, leave nop alone. */ | |
| 11391 | } | |
| 11392 | else | |
| 11393 | bfd_put_32 (input_bfd, LD_R2_40R1, | |
| 11394 | contents + rel->r_offset + 4); | |
| b25116a9 | 11395 | can_plt_call = TRUE; |
| 41bd81ab | 11396 | } |
| 5bd4f169 | 11397 | } |
| 721956f4 AM |
11398 | |
| 11399 | if (!can_plt_call) | |
| 11400 | { | |
| ad8e1ba5 AM |
11401 | if (stub_entry->stub_type == ppc_stub_plt_call) |
| 11402 | { | |
| 11403 | /* If this is a plain branch rather than a branch | |
| 4fa1c237 AM |
11404 | and link, don't require a nop. However, don't |
| 11405 | allow tail calls in a shared library as they | |
| 11406 | will result in r2 being corrupted. */ | |
| b25116a9 AM |
11407 | unsigned long br; |
| 11408 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
| 4fa1c237 | 11409 | if (info->executable && (br & 1) == 0) |
| b25116a9 | 11410 | can_plt_call = TRUE; |
| 15b552e9 AM |
11411 | else |
| 11412 | stub_entry = NULL; | |
| ad8e1ba5 | 11413 | } |
| 6ab189d5 | 11414 | else if (h != NULL |
| 039b3fef | 11415 | && strcmp (h->elf.root.root.string, |
| 6ab189d5 AM |
11416 | ".__libc_start_main") == 0) |
| 11417 | { | |
| 11418 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
| b25116a9 | 11419 | can_plt_call = TRUE; |
| 6ab189d5 | 11420 | } |
| ad8e1ba5 AM |
11421 | else |
| 11422 | { | |
| 11423 | if (strcmp (input_section->output_section->name, | |
| 11424 | ".init") == 0 | |
| 11425 | || strcmp (input_section->output_section->name, | |
| 11426 | ".fini") == 0) | |
| 11427 | (*_bfd_error_handler) | |
| d003868e | 11428 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
| ad8e1ba5 AM |
11429 | "not supported using your crt files; " |
| 11430 | "recompile with -mminimal-toc or upgrade gcc"), | |
| d003868e AM |
11431 | input_bfd, |
| 11432 | input_section, | |
| ad8e1ba5 AM |
11433 | (long) rel->r_offset); |
| 11434 | else | |
| 11435 | (*_bfd_error_handler) | |
| d003868e | 11436 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
| ad8e1ba5 AM |
11437 | "does not allow automatic multiple TOCs; " |
| 11438 | "recompile with -mminimal-toc or " | |
| 11439 | "-fno-optimize-sibling-calls, " | |
| 11440 | "or make `%s' extern"), | |
| d003868e AM |
11441 | input_bfd, |
| 11442 | input_section, | |
| ad8e1ba5 AM |
11443 | (long) rel->r_offset, |
| 11444 | sym_name, | |
| 11445 | sym_name); | |
| 11446 | bfd_set_error (bfd_error_bad_value); | |
| 11447 | ret = FALSE; | |
| 11448 | } | |
| 721956f4 AM |
11449 | } |
| 11450 | ||
| b25116a9 AM |
11451 | if (can_plt_call |
| 11452 | && stub_entry->stub_type == ppc_stub_plt_call) | |
| 11453 | unresolved_reloc = FALSE; | |
| 11454 | } | |
| 11455 | ||
| 8387904d AM |
11456 | if (stub_entry == NULL |
| 11457 | && get_opd_info (sec) != NULL) | |
| 11458 | { | |
| 11459 | /* The branch destination is the value of the opd entry. */ | |
| 4cc603a5 AM |
11460 | bfd_vma off = (relocation + addend |
| 11461 | - sec->output_section->vma | |
| 11462 | - sec->output_offset); | |
| 8387904d AM |
11463 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
| 11464 | if (dest != (bfd_vma) -1) | |
| 11465 | { | |
| 11466 | relocation = dest; | |
| 11467 | addend = 0; | |
| 11468 | } | |
| 11469 | } | |
| 11470 | ||
| b25116a9 AM |
11471 | /* If the branch is out of reach we ought to have a long |
| 11472 | branch stub. */ | |
| 11473 | from = (rel->r_offset | |
| 11474 | + input_section->output_offset | |
| 11475 | + input_section->output_section->vma); | |
| 11476 | ||
| 11477 | if (stub_entry == NULL | |
| 4cc603a5 | 11478 | && (relocation + addend - from + max_br_offset |
| b25116a9 AM |
11479 | >= 2 * max_br_offset) |
| 11480 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
| 11481 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
| 039b3fef AM |
11482 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
| 11483 | htab); | |
| b25116a9 AM |
11484 | |
| 11485 | if (stub_entry != NULL) | |
| 11486 | { | |
| 11487 | /* Munge up the value and addend so that we call the stub | |
| 11488 | rather than the procedure directly. */ | |
| 11489 | relocation = (stub_entry->stub_offset | |
| 11490 | + stub_entry->stub_sec->output_offset | |
| 11491 | + stub_entry->stub_sec->output_section->vma); | |
| 11492 | addend = 0; | |
| 11493 | } | |
| 11494 | ||
| 11495 | if (insn != 0) | |
| 11496 | { | |
| 11497 | if (is_power4) | |
| 721956f4 | 11498 | { |
| b25116a9 AM |
11499 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 11500 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 11501 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 11502 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 11503 | insn |= 0x02 << 21; | |
| 11504 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 11505 | insn |= 0x08 << 21; | |
| 11506 | else | |
| 11507 | break; | |
| 11508 | } | |
| 11509 | else | |
| 11510 | { | |
| 11511 | /* Invert 'y' bit if not the default. */ | |
| 4cc603a5 | 11512 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
| b25116a9 | 11513 | insn ^= 0x01 << 21; |
| 721956f4 | 11514 | } |
| b25116a9 AM |
11515 | |
| 11516 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
| 5bd4f169 | 11517 | } |
| e86ce104 | 11518 | |
| 06da1e8e AM |
11519 | /* NOP out calls to undefined weak functions. |
| 11520 | We can thus call a weak function without first | |
| 11521 | checking whether the function is defined. */ | |
| b25116a9 | 11522 | else if (h != NULL |
| 039b3fef | 11523 | && h->elf.root.type == bfd_link_hash_undefweak |
| 766bc656 | 11524 | && h->elf.dynindx == -1 |
| b25116a9 AM |
11525 | && r_type == R_PPC64_REL24 |
| 11526 | && relocation == 0 | |
| 4cc603a5 | 11527 | && addend == 0) |
| e86ce104 | 11528 | { |
| 06da1e8e AM |
11529 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
| 11530 | continue; | |
| e86ce104 | 11531 | } |
| 65f38f15 AM |
11532 | break; |
| 11533 | } | |
| 5bd4f169 | 11534 | |
| 65f38f15 | 11535 | /* Set `addend'. */ |
| 411e1bfb | 11536 | tls_type = 0; |
| 65f38f15 AM |
11537 | switch (r_type) |
| 11538 | { | |
| 11539 | default: | |
| 11540 | (*_bfd_error_handler) | |
| d003868e AM |
11541 | (_("%B: unknown relocation type %d for symbol %s"), |
| 11542 | input_bfd, (int) r_type, sym_name); | |
| 5bd4f169 | 11543 | |
| 65f38f15 | 11544 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 11545 | ret = FALSE; |
| 65f38f15 | 11546 | continue; |
| 5bd4f169 | 11547 | |
| 65f38f15 | 11548 | case R_PPC64_NONE: |
| 411e1bfb | 11549 | case R_PPC64_TLS: |
| 727fc41e AM |
11550 | case R_PPC64_TLSGD: |
| 11551 | case R_PPC64_TLSLD: | |
| 04c9666a AM |
11552 | case R_PPC64_GNU_VTINHERIT: |
| 11553 | case R_PPC64_GNU_VTENTRY: | |
| 65f38f15 | 11554 | continue; |
| 5bd4f169 AM |
11555 | |
| 11556 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
| 11557 | address in the GOT as relocation value instead of the | |
| 411e1bfb | 11558 | symbol's value itself. Also, create a GOT entry for the |
| 5bd4f169 | 11559 | symbol and put the symbol value there. */ |
| 411e1bfb AM |
11560 | case R_PPC64_GOT_TLSGD16: |
| 11561 | case R_PPC64_GOT_TLSGD16_LO: | |
| 11562 | case R_PPC64_GOT_TLSGD16_HI: | |
| 11563 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 11564 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
11565 | goto dogot; |
| 11566 | ||
| 11567 | case R_PPC64_GOT_TLSLD16: | |
| 11568 | case R_PPC64_GOT_TLSLD16_LO: | |
| 11569 | case R_PPC64_GOT_TLSLD16_HI: | |
| 11570 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 11571 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
11572 | goto dogot; |
| 11573 | ||
| 11574 | case R_PPC64_GOT_TPREL16_DS: | |
| 11575 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 11576 | case R_PPC64_GOT_TPREL16_HI: | |
| 11577 | case R_PPC64_GOT_TPREL16_HA: | |
| 11578 | tls_type = TLS_TLS | TLS_TPREL; | |
| 11579 | goto dogot; | |
| 11580 | ||
| 11581 | case R_PPC64_GOT_DTPREL16_DS: | |
| 11582 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 11583 | case R_PPC64_GOT_DTPREL16_HI: | |
| 11584 | case R_PPC64_GOT_DTPREL16_HA: | |
| 11585 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 11586 | goto dogot; | |
| 11587 | ||
| 65f38f15 AM |
11588 | case R_PPC64_GOT16: |
| 11589 | case R_PPC64_GOT16_LO: | |
| 11590 | case R_PPC64_GOT16_HI: | |
| 11591 | case R_PPC64_GOT16_HA: | |
| 11592 | case R_PPC64_GOT16_DS: | |
| 11593 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb | 11594 | dogot: |
| 5bd4f169 AM |
11595 | { |
| 11596 | /* Relocation is to the entry for this symbol in the global | |
| 11597 | offset table. */ | |
| e717da7e | 11598 | asection *got; |
| d881513a | 11599 | bfd_vma *offp; |
| 5bd4f169 | 11600 | bfd_vma off; |
| d881513a | 11601 | unsigned long indx = 0; |
| 65f38f15 | 11602 | |
| d881513a AM |
11603 | if (tls_type == (TLS_TLS | TLS_LD) |
| 11604 | && (h == NULL | |
| f5385ebf | 11605 | || !h->elf.def_dynamic)) |
| e717da7e | 11606 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
| 411e1bfb | 11607 | else |
| 5bd4f169 | 11608 | { |
| d881513a | 11609 | struct got_entry *ent; |
| 5bd4f169 | 11610 | |
| d881513a AM |
11611 | if (h != NULL) |
| 11612 | { | |
| 11613 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
| 039b3fef AM |
11614 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
| 11615 | &h->elf) | |
| d881513a | 11616 | || (info->shared |
| 039b3fef | 11617 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
| d881513a AM |
11618 | /* This is actually a static link, or it is a |
| 11619 | -Bsymbolic link and the symbol is defined | |
| 11620 | locally, or the symbol was forced to be local | |
| 11621 | because of a version file. */ | |
| 11622 | ; | |
| 11623 | else | |
| 11624 | { | |
| 039b3fef | 11625 | indx = h->elf.dynindx; |
| d881513a AM |
11626 | unresolved_reloc = FALSE; |
| 11627 | } | |
| 039b3fef | 11628 | ent = h->elf.got.glist; |
| d881513a | 11629 | } |
| 411e1bfb | 11630 | else |
| 5bd4f169 | 11631 | { |
| d881513a AM |
11632 | if (local_got_ents == NULL) |
| 11633 | abort (); | |
| 11634 | ent = local_got_ents[r_symndx]; | |
| 5bd4f169 | 11635 | } |
| d881513a AM |
11636 | |
| 11637 | for (; ent != NULL; ent = ent->next) | |
| 4cc603a5 | 11638 | if (ent->addend == orig_addend |
| e717da7e | 11639 | && ent->owner == input_bfd |
| d881513a AM |
11640 | && ent->tls_type == tls_type) |
| 11641 | break; | |
| 11642 | if (ent == NULL) | |
| 11643 | abort (); | |
| 11644 | offp = &ent->got.offset; | |
| 5bd4f169 | 11645 | } |
| 411e1bfb | 11646 | |
| e717da7e AM |
11647 | got = ppc64_elf_tdata (input_bfd)->got; |
| 11648 | if (got == NULL) | |
| 11649 | abort (); | |
| 11650 | ||
| 411e1bfb AM |
11651 | /* The offset must always be a multiple of 8. We use the |
| 11652 | least significant bit to record whether we have already | |
| 11653 | processed this entry. */ | |
| d881513a | 11654 | off = *offp; |
| 411e1bfb AM |
11655 | if ((off & 1) != 0) |
| 11656 | off &= ~1; | |
| 5bd4f169 AM |
11657 | else |
| 11658 | { | |
| 411e1bfb AM |
11659 | /* Generate relocs for the dynamic linker, except in |
| 11660 | the case of TLSLD where we'll use one entry per | |
| 11661 | module. */ | |
| 25f23106 AM |
11662 | asection *relgot; |
| 11663 | bfd_boolean ifunc; | |
| e717da7e | 11664 | |
| d881513a | 11665 | *offp = off | 1; |
| 25f23106 AM |
11666 | relgot = NULL; |
| 11667 | ifunc = (h != NULL | |
| 11668 | ? h->elf.type == STT_GNU_IFUNC | |
| 11669 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
| 4e795f50 | 11670 | if ((info->shared || indx != 0) |
| 3a71aa26 AM |
11671 | && (offp == &ppc64_tlsld_got (input_bfd)->offset |
| 11672 | || h == NULL | |
| 039b3fef AM |
11673 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
| 11674 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
| 25f23106 AM |
11675 | relgot = ppc64_elf_tdata (input_bfd)->relgot; |
| 11676 | else if (ifunc) | |
| 11677 | relgot = htab->reliplt; | |
| 11678 | if (relgot != NULL) | |
| 5bd4f169 | 11679 | { |
| e717da7e AM |
11680 | outrel.r_offset = (got->output_section->vma |
| 11681 | + got->output_offset | |
| 411e1bfb | 11682 | + off); |
| 4cc603a5 | 11683 | outrel.r_addend = addend; |
| d881513a | 11684 | if (tls_type & (TLS_LD | TLS_GD)) |
| 5bd4f169 | 11685 | { |
| 411e1bfb | 11686 | outrel.r_addend = 0; |
| e515b051 | 11687 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
| d881513a AM |
11688 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 11689 | { | |
| e717da7e AM |
11690 | loc = relgot->contents; |
| 11691 | loc += (relgot->reloc_count++ | |
| d881513a AM |
11692 | * sizeof (Elf64_External_Rela)); |
| 11693 | bfd_elf64_swap_reloca_out (output_bfd, | |
| 11694 | &outrel, loc); | |
| e515b051 | 11695 | outrel.r_offset += 8; |
| 4cc603a5 | 11696 | outrel.r_addend = addend; |
| d881513a AM |
11697 | outrel.r_info |
| 11698 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
| d881513a | 11699 | } |
| 411e1bfb | 11700 | } |
| 951fd09b | 11701 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
| 411e1bfb | 11702 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
| 951fd09b | 11703 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
| 411e1bfb | 11704 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
| 25f23106 AM |
11705 | else if (indx != 0) |
| 11706 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
| 11707 | else | |
| 81407a69 | 11708 | { |
| 25f23106 AM |
11709 | if (ifunc) |
| 11710 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| 11711 | else | |
| 11712 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 81407a69 AM |
11713 | |
| 11714 | /* Write the .got section contents for the sake | |
| 11715 | of prelink. */ | |
| e717da7e | 11716 | loc = got->contents + off; |
| 23fbd6fa JJ |
11717 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
| 11718 | loc); | |
| 81407a69 | 11719 | } |
| 81407a69 AM |
11720 | |
| 11721 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
| e515b051 AM |
11722 | { |
| 11723 | outrel.r_addend += relocation; | |
| 11724 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
| e1918d23 | 11725 | outrel.r_addend -= htab->elf.tls_sec->vma; |
| e515b051 | 11726 | } |
| e717da7e AM |
11727 | loc = relgot->contents; |
| 11728 | loc += (relgot->reloc_count++ | |
| 411e1bfb AM |
11729 | * sizeof (Elf64_External_Rela)); |
| 11730 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
| 11731 | } | |
| 11732 | ||
| ad8e1ba5 | 11733 | /* Init the .got section contents here if we're not |
| 81407a69 | 11734 | emitting a reloc. */ |
| d881513a | 11735 | else |
| 411e1bfb | 11736 | { |
| 4cc603a5 | 11737 | relocation += addend; |
| 7b609f53 AM |
11738 | if (tls_type == (TLS_TLS | TLS_LD)) |
| 11739 | relocation = 1; | |
| 11740 | else if (tls_type != 0) | |
| 411e1bfb | 11741 | { |
| e1918d23 | 11742 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 7b609f53 | 11743 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
| 411e1bfb | 11744 | relocation += DTP_OFFSET - TP_OFFSET; |
| 5bd4f169 | 11745 | |
| 7b609f53 AM |
11746 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 11747 | { | |
| 11748 | bfd_put_64 (output_bfd, relocation, | |
| e717da7e | 11749 | got->contents + off + 8); |
| 7b609f53 AM |
11750 | relocation = 1; |
| 11751 | } | |
| 411e1bfb | 11752 | } |
| 7b609f53 | 11753 | |
| 411e1bfb | 11754 | bfd_put_64 (output_bfd, relocation, |
| e717da7e | 11755 | got->contents + off); |
| 5bd4f169 AM |
11756 | } |
| 11757 | } | |
| 11758 | ||
| 65f38f15 AM |
11759 | if (off >= (bfd_vma) -2) |
| 11760 | abort (); | |
| 11761 | ||
| bf102f86 AM |
11762 | relocation = got->output_section->vma + got->output_offset + off; |
| 11763 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
| 5bd4f169 | 11764 | } |
| 65f38f15 AM |
11765 | break; |
| 11766 | ||
| 11767 | case R_PPC64_PLT16_HA: | |
| 11768 | case R_PPC64_PLT16_HI: | |
| 11769 | case R_PPC64_PLT16_LO: | |
| 11770 | case R_PPC64_PLT32: | |
| 11771 | case R_PPC64_PLT64: | |
| 11772 | /* Relocation is to the entry for this symbol in the | |
| 11773 | procedure linkage table. */ | |
| 11774 | ||
| 11775 | /* Resolve a PLT reloc against a local symbol directly, | |
| 11776 | without using the procedure linkage table. */ | |
| 11777 | if (h == NULL) | |
| 11778 | break; | |
| 11779 | ||
| 411e1bfb AM |
11780 | /* It's possible that we didn't make a PLT entry for this |
| 11781 | symbol. This happens when statically linking PIC code, | |
| 11782 | or when using -Bsymbolic. Go find a match if there is a | |
| 11783 | PLT entry. */ | |
| 4ce794b7 | 11784 | if (htab->plt != NULL) |
| 65f38f15 | 11785 | { |
| 411e1bfb | 11786 | struct plt_entry *ent; |
| 039b3fef | 11787 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
| 4cc603a5 | 11788 | if (ent->addend == orig_addend |
| 411e1bfb AM |
11789 | && ent->plt.offset != (bfd_vma) -1) |
| 11790 | { | |
| 4ce794b7 AM |
11791 | relocation = (htab->plt->output_section->vma |
| 11792 | + htab->plt->output_offset | |
| 411e1bfb AM |
11793 | + ent->plt.offset); |
| 11794 | unresolved_reloc = FALSE; | |
| 11795 | } | |
| 65f38f15 | 11796 | } |
| 65f38f15 | 11797 | break; |
| 5bd4f169 | 11798 | |
| 0b13192e AM |
11799 | case R_PPC64_TOC: |
| 11800 | /* Relocation value is TOC base. */ | |
| 11801 | relocation = TOCstart; | |
| 11802 | if (r_symndx == 0) | |
| 11803 | relocation += htab->stub_group[input_section->id].toc_off; | |
| 8517fae7 AM |
11804 | else if (unresolved_reloc) |
| 11805 | ; | |
| 11806 | else if (sec != NULL && sec->id <= htab->top_id) | |
| 0b13192e AM |
11807 | relocation += htab->stub_group[sec->id].toc_off; |
| 11808 | else | |
| 11809 | unresolved_reloc = TRUE; | |
| ab96bf03 | 11810 | goto dodyn; |
| 0b13192e | 11811 | |
| 5bd4f169 AM |
11812 | /* TOC16 relocs. We want the offset relative to the TOC base, |
| 11813 | which is the address of the start of the TOC plus 0x8000. | |
| 11814 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
| 11815 | in this order. */ | |
| 65f38f15 AM |
11816 | case R_PPC64_TOC16: |
| 11817 | case R_PPC64_TOC16_LO: | |
| 11818 | case R_PPC64_TOC16_HI: | |
| 11819 | case R_PPC64_TOC16_DS: | |
| 11820 | case R_PPC64_TOC16_LO_DS: | |
| 11821 | case R_PPC64_TOC16_HA: | |
| ad8e1ba5 | 11822 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
| 5bd4f169 AM |
11823 | break; |
| 11824 | ||
| 11825 | /* Relocate against the beginning of the section. */ | |
| 65f38f15 AM |
11826 | case R_PPC64_SECTOFF: |
| 11827 | case R_PPC64_SECTOFF_LO: | |
| 11828 | case R_PPC64_SECTOFF_HI: | |
| 11829 | case R_PPC64_SECTOFF_DS: | |
| 11830 | case R_PPC64_SECTOFF_LO_DS: | |
| 11831 | case R_PPC64_SECTOFF_HA: | |
| 4ce794b7 | 11832 | if (sec != NULL) |
| 65f38f15 | 11833 | addend -= sec->output_section->vma; |
| 5bd4f169 AM |
11834 | break; |
| 11835 | ||
| 25f23106 AM |
11836 | case R_PPC64_REL16: |
| 11837 | case R_PPC64_REL16_LO: | |
| 11838 | case R_PPC64_REL16_HI: | |
| 11839 | case R_PPC64_REL16_HA: | |
| 11840 | break; | |
| 11841 | ||
| 721956f4 AM |
11842 | case R_PPC64_REL14: |
| 11843 | case R_PPC64_REL14_BRNTAKEN: | |
| 11844 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 AM |
11845 | case R_PPC64_REL24: |
| 11846 | break; | |
| 11847 | ||
| 411e1bfb AM |
11848 | case R_PPC64_TPREL16: |
| 11849 | case R_PPC64_TPREL16_LO: | |
| 11850 | case R_PPC64_TPREL16_HI: | |
| 11851 | case R_PPC64_TPREL16_HA: | |
| 11852 | case R_PPC64_TPREL16_DS: | |
| 11853 | case R_PPC64_TPREL16_LO_DS: | |
| 11854 | case R_PPC64_TPREL16_HIGHER: | |
| 11855 | case R_PPC64_TPREL16_HIGHERA: | |
| 11856 | case R_PPC64_TPREL16_HIGHEST: | |
| 11857 | case R_PPC64_TPREL16_HIGHESTA: | |
| 766bc656 AM |
11858 | if (h != NULL |
| 11859 | && h->elf.root.type == bfd_link_hash_undefweak | |
| 11860 | && h->elf.dynindx == -1) | |
| 11861 | { | |
| 11862 | /* Make this relocation against an undefined weak symbol | |
| 11863 | resolve to zero. This is really just a tweak, since | |
| 11864 | code using weak externs ought to check that they are | |
| 11865 | defined before using them. */ | |
| 11866 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
| 11867 | ||
| 11868 | insn = bfd_get_32 (output_bfd, p); | |
| 11869 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
| 11870 | if (insn != 0) | |
| 11871 | bfd_put_32 (output_bfd, insn, p); | |
| 11872 | break; | |
| 11873 | } | |
| e1918d23 | 11874 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
| 411e1bfb AM |
11875 | if (info->shared) |
| 11876 | /* The TPREL16 relocs shouldn't really be used in shared | |
| 11877 | libs as they will result in DT_TEXTREL being set, but | |
| 11878 | support them anyway. */ | |
| 11879 | goto dodyn; | |
| 11880 | break; | |
| 11881 | ||
| 11882 | case R_PPC64_DTPREL16: | |
| 11883 | case R_PPC64_DTPREL16_LO: | |
| 11884 | case R_PPC64_DTPREL16_HI: | |
| 11885 | case R_PPC64_DTPREL16_HA: | |
| 11886 | case R_PPC64_DTPREL16_DS: | |
| 11887 | case R_PPC64_DTPREL16_LO_DS: | |
| 11888 | case R_PPC64_DTPREL16_HIGHER: | |
| 11889 | case R_PPC64_DTPREL16_HIGHERA: | |
| 11890 | case R_PPC64_DTPREL16_HIGHEST: | |
| 11891 | case R_PPC64_DTPREL16_HIGHESTA: | |
| e1918d23 | 11892 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 411e1bfb AM |
11893 | break; |
| 11894 | ||
| e515b051 AM |
11895 | case R_PPC64_DTPMOD64: |
| 11896 | relocation = 1; | |
| 11897 | addend = 0; | |
| 11898 | goto dodyn; | |
| 11899 | ||
| 411e1bfb | 11900 | case R_PPC64_TPREL64: |
| e1918d23 | 11901 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
| 411e1bfb AM |
11902 | goto dodyn; |
| 11903 | ||
| 11904 | case R_PPC64_DTPREL64: | |
| e1918d23 | 11905 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 411e1bfb AM |
11906 | /* Fall thru */ |
| 11907 | ||
| 65f38f15 AM |
11908 | /* Relocations that may need to be propagated if this is a |
| 11909 | dynamic object. */ | |
| 04c9666a | 11910 | case R_PPC64_REL30: |
| 65f38f15 AM |
11911 | case R_PPC64_REL32: |
| 11912 | case R_PPC64_REL64: | |
| 11913 | case R_PPC64_ADDR14: | |
| 11914 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 11915 | case R_PPC64_ADDR14_BRTAKEN: | |
| 11916 | case R_PPC64_ADDR16: | |
| 11917 | case R_PPC64_ADDR16_DS: | |
| 11918 | case R_PPC64_ADDR16_HA: | |
| 11919 | case R_PPC64_ADDR16_HI: | |
| 11920 | case R_PPC64_ADDR16_HIGHER: | |
| 11921 | case R_PPC64_ADDR16_HIGHERA: | |
| 11922 | case R_PPC64_ADDR16_HIGHEST: | |
| 11923 | case R_PPC64_ADDR16_HIGHESTA: | |
| 11924 | case R_PPC64_ADDR16_LO: | |
| 11925 | case R_PPC64_ADDR16_LO_DS: | |
| 11926 | case R_PPC64_ADDR24: | |
| 65f38f15 AM |
11927 | case R_PPC64_ADDR32: |
| 11928 | case R_PPC64_ADDR64: | |
| 11929 | case R_PPC64_UADDR16: | |
| 11930 | case R_PPC64_UADDR32: | |
| 11931 | case R_PPC64_UADDR64: | |
| 411e1bfb | 11932 | dodyn: |
| 5d1634d7 | 11933 | if ((input_section->flags & SEC_ALLOC) == 0) |
| ec338859 AM |
11934 | break; |
| 11935 | ||
| 41bd81ab AM |
11936 | if (NO_OPD_RELOCS && is_opd) |
| 11937 | break; | |
| 11938 | ||
| 65f38f15 | 11939 | if ((info->shared |
| 4e795f50 | 11940 | && (h == NULL |
| 039b3fef AM |
11941 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
| 11942 | || h->elf.root.type != bfd_link_hash_undefweak) | |
| 1d483afe | 11943 | && (must_be_dyn_reloc (info, r_type) |
| 039b3fef | 11944 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
| f4656909 AM |
11945 | || (ELIMINATE_COPY_RELOCS |
| 11946 | && !info->shared | |
| 65f38f15 | 11947 | && h != NULL |
| 039b3fef | 11948 | && h->elf.dynindx != -1 |
| f5385ebf | 11949 | && !h->elf.non_got_ref |
| 25f23106 AM |
11950 | && !h->elf.def_regular) |
| 11951 | || (!info->shared | |
| 11952 | && (h != NULL | |
| 11953 | ? h->elf.type == STT_GNU_IFUNC | |
| 11954 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
| 65f38f15 | 11955 | { |
| b34976b6 | 11956 | bfd_boolean skip, relocate; |
| 65f38f15 | 11957 | asection *sreloc; |
| 1cf1f670 | 11958 | bfd_vma out_off; |
| 65f38f15 AM |
11959 | |
| 11960 | /* When generating a dynamic object, these relocations | |
| 11961 | are copied into the output file to be resolved at run | |
| 11962 | time. */ | |
| 11963 | ||
| b34976b6 AM |
11964 | skip = FALSE; |
| 11965 | relocate = FALSE; | |
| 65f38f15 | 11966 | |
| 1cf1f670 AM |
11967 | out_off = _bfd_elf_section_offset (output_bfd, info, |
| 11968 | input_section, rel->r_offset); | |
| 11969 | if (out_off == (bfd_vma) -1) | |
| b34976b6 | 11970 | skip = TRUE; |
| 1cf1f670 | 11971 | else if (out_off == (bfd_vma) -2) |
| b34976b6 | 11972 | skip = TRUE, relocate = TRUE; |
| 1cf1f670 AM |
11973 | out_off += (input_section->output_section->vma |
| 11974 | + input_section->output_offset); | |
| 11975 | outrel.r_offset = out_off; | |
| 411e1bfb | 11976 | outrel.r_addend = rel->r_addend; |
| 65f38f15 | 11977 | |
| 1cf1f670 AM |
11978 | /* Optimize unaligned reloc use. */ |
| 11979 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
| 11980 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
| 11981 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
| 11982 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
| 11983 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
| 11984 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
| 11985 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
| 11986 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
| 11987 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
| 11988 | ||
| 65f38f15 | 11989 | if (skip) |
| 0bb2d96a | 11990 | memset (&outrel, 0, sizeof outrel); |
| 039b3fef | 11991 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
| 0b13192e AM |
11992 | && !is_opd |
| 11993 | && r_type != R_PPC64_TOC) | |
| 039b3fef | 11994 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
| 65f38f15 AM |
11995 | else |
| 11996 | { | |
| 41bd81ab AM |
11997 | /* This symbol is local, or marked to become local, |
| 11998 | or this is an opd section reloc which must point | |
| 11999 | at a local function. */ | |
| 65f38f15 | 12000 | outrel.r_addend += relocation; |
| e86ce104 | 12001 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
| 65f38f15 | 12002 | { |
| 3fad3c7c | 12003 | if (is_opd && h != NULL) |
| afbe61cf AM |
12004 | { |
| 12005 | /* Lie about opd entries. This case occurs | |
| 12006 | when building shared libraries and we | |
| 12007 | reference a function in another shared | |
| 3fad3c7c AM |
12008 | lib. The same thing happens for a weak |
| 12009 | definition in an application that's | |
| 12010 | overridden by a strong definition in a | |
| 12011 | shared lib. (I believe this is a generic | |
| 12012 | bug in binutils handling of weak syms.) | |
| 12013 | In these cases we won't use the opd | |
| 1e2f5b6e | 12014 | entry in this lib. */ |
| b34976b6 | 12015 | unresolved_reloc = FALSE; |
| afbe61cf | 12016 | } |
| 25f23106 AM |
12017 | if (!is_opd |
| 12018 | && r_type == R_PPC64_ADDR64 | |
| 12019 | && (h != NULL | |
| 12020 | ? h->elf.type == STT_GNU_IFUNC | |
| 12021 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
| 12022 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| 12023 | else | |
| 12024 | { | |
| 12025 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 81407a69 | 12026 | |
| 25f23106 AM |
12027 | /* We need to relocate .opd contents for ld.so. |
| 12028 | Prelink also wants simple and consistent rules | |
| 12029 | for relocs. This make all RELATIVE relocs have | |
| 12030 | *r_offset equal to r_addend. */ | |
| 12031 | relocate = TRUE; | |
| 12032 | } | |
| 65f38f15 AM |
12033 | } |
| 12034 | else | |
| 12035 | { | |
| 12036 | long indx = 0; | |
| 12037 | ||
| 25f23106 AM |
12038 | if (h != NULL |
| 12039 | ? h->elf.type == STT_GNU_IFUNC | |
| 12040 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 12041 | { | |
| 12042 | (*_bfd_error_handler) | |
| 12043 | (_("%B(%A+0x%lx): relocation %s for indirect " | |
| 12044 | "function %s unsupported"), | |
| 12045 | input_bfd, | |
| 12046 | input_section, | |
| 12047 | (long) rel->r_offset, | |
| 12048 | ppc64_elf_howto_table[r_type]->name, | |
| 12049 | sym_name); | |
| 12050 | ret = FALSE; | |
| 12051 | } | |
| 12052 | else if (r_symndx == 0 || bfd_is_abs_section (sec)) | |
| 65f38f15 AM |
12053 | ; |
| 12054 | else if (sec == NULL || sec->owner == NULL) | |
| 12055 | { | |
| 12056 | bfd_set_error (bfd_error_bad_value); | |
| b34976b6 | 12057 | return FALSE; |
| 65f38f15 AM |
12058 | } |
| 12059 | else | |
| 12060 | { | |
| 12061 | asection *osec; | |
| 12062 | ||
| 12063 | osec = sec->output_section; | |
| 12064 | indx = elf_section_data (osec)->dynindx; | |
| 12065 | ||
| 74541ad4 AM |
12066 | if (indx == 0) |
| 12067 | { | |
| 12068 | if ((osec->flags & SEC_READONLY) == 0 | |
| 12069 | && htab->elf.data_index_section != NULL) | |
| 12070 | osec = htab->elf.data_index_section; | |
| 12071 | else | |
| 12072 | osec = htab->elf.text_index_section; | |
| 12073 | indx = elf_section_data (osec)->dynindx; | |
| 12074 | } | |
| 12075 | BFD_ASSERT (indx != 0); | |
| 12076 | ||
| 65f38f15 AM |
12077 | /* We are turning this relocation into one |
| 12078 | against a section symbol, so subtract out | |
| 12079 | the output section's address but not the | |
| 12080 | offset of the input section in the output | |
| 12081 | section. */ | |
| 12082 | outrel.r_addend -= osec->vma; | |
| 12083 | } | |
| 12084 | ||
| 12085 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
| 12086 | } | |
| 12087 | } | |
| 12088 | ||
| 12089 | sreloc = elf_section_data (input_section)->sreloc; | |
| 25f23106 AM |
12090 | if (!htab->elf.dynamic_sections_created) |
| 12091 | sreloc = htab->reliplt; | |
| 65f38f15 AM |
12092 | if (sreloc == NULL) |
| 12093 | abort (); | |
| 12094 | ||
| dfbb6ac9 AM |
12095 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
| 12096 | >= sreloc->size) | |
| 12097 | abort (); | |
| 947216bf AM |
12098 | loc = sreloc->contents; |
| 12099 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 AM |
12100 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
| 12101 | ||
| 12102 | /* If this reloc is against an external symbol, it will | |
| 12103 | be computed at runtime, so there's no need to do | |
| 81407a69 AM |
12104 | anything now. However, for the sake of prelink ensure |
| 12105 | that the section contents are a known value. */ | |
| 65f38f15 | 12106 | if (! relocate) |
| 81407a69 AM |
12107 | { |
| 12108 | unresolved_reloc = FALSE; | |
| 12109 | /* The value chosen here is quite arbitrary as ld.so | |
| 12110 | ignores section contents except for the special | |
| 12111 | case of .opd where the contents might be accessed | |
| 12112 | before relocation. Choose zero, as that won't | |
| 12113 | cause reloc overflow. */ | |
| 12114 | relocation = 0; | |
| 12115 | addend = 0; | |
| 12116 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
| 12117 | to improve backward compatibility with older | |
| 12118 | versions of ld. */ | |
| 12119 | if (r_type == R_PPC64_ADDR64) | |
| 12120 | addend = outrel.r_addend; | |
| 12121 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
| 4ce794b7 | 12122 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
| 000732f7 AM |
12123 | addend = (input_section->output_section->vma |
| 12124 | + input_section->output_offset | |
| 12125 | + rel->r_offset); | |
| 81407a69 | 12126 | } |
| 65f38f15 | 12127 | } |
| 5bd4f169 AM |
12128 | break; |
| 12129 | ||
| 65f38f15 AM |
12130 | case R_PPC64_COPY: |
| 12131 | case R_PPC64_GLOB_DAT: | |
| 12132 | case R_PPC64_JMP_SLOT: | |
| 25f23106 | 12133 | case R_PPC64_JMP_IREL: |
| 65f38f15 AM |
12134 | case R_PPC64_RELATIVE: |
| 12135 | /* We shouldn't ever see these dynamic relocs in relocatable | |
| 12136 | files. */ | |
| ae9a127f | 12137 | /* Fall through. */ |
| 65f38f15 AM |
12138 | |
| 12139 | case R_PPC64_PLTGOT16: | |
| 12140 | case R_PPC64_PLTGOT16_DS: | |
| 12141 | case R_PPC64_PLTGOT16_HA: | |
| 12142 | case R_PPC64_PLTGOT16_HI: | |
| 12143 | case R_PPC64_PLTGOT16_LO: | |
| 12144 | case R_PPC64_PLTGOT16_LO_DS: | |
| 12145 | case R_PPC64_PLTREL32: | |
| 12146 | case R_PPC64_PLTREL64: | |
| 12147 | /* These ones haven't been implemented yet. */ | |
| 12148 | ||
| 12149 | (*_bfd_error_handler) | |
| d003868e AM |
12150 | (_("%B: relocation %s is not supported for symbol %s."), |
| 12151 | input_bfd, | |
| 4ce794b7 | 12152 | ppc64_elf_howto_table[r_type]->name, sym_name); |
| 5bd4f169 AM |
12153 | |
| 12154 | bfd_set_error (bfd_error_invalid_operation); | |
| b34976b6 | 12155 | ret = FALSE; |
| 5bd4f169 | 12156 | continue; |
| 65f38f15 | 12157 | } |
| 5bd4f169 | 12158 | |
| 65f38f15 AM |
12159 | /* Do any further special processing. */ |
| 12160 | switch (r_type) | |
| 12161 | { | |
| 12162 | default: | |
| 12163 | break; | |
| 12164 | ||
| 12165 | case R_PPC64_ADDR16_HA: | |
| 25f23106 | 12166 | case R_PPC64_REL16_HA: |
| 65f38f15 AM |
12167 | case R_PPC64_ADDR16_HIGHERA: |
| 12168 | case R_PPC64_ADDR16_HIGHESTA: | |
| 65f38f15 AM |
12169 | case R_PPC64_TOC16_HA: |
| 12170 | case R_PPC64_SECTOFF_HA: | |
| 411e1bfb AM |
12171 | case R_PPC64_TPREL16_HA: |
| 12172 | case R_PPC64_DTPREL16_HA: | |
| 411e1bfb AM |
12173 | case R_PPC64_TPREL16_HIGHER: |
| 12174 | case R_PPC64_TPREL16_HIGHERA: | |
| 12175 | case R_PPC64_TPREL16_HIGHEST: | |
| 12176 | case R_PPC64_TPREL16_HIGHESTA: | |
| 12177 | case R_PPC64_DTPREL16_HIGHER: | |
| 12178 | case R_PPC64_DTPREL16_HIGHERA: | |
| 12179 | case R_PPC64_DTPREL16_HIGHEST: | |
| 12180 | case R_PPC64_DTPREL16_HIGHESTA: | |
| 65f38f15 AM |
12181 | /* It's just possible that this symbol is a weak symbol |
| 12182 | that's not actually defined anywhere. In that case, | |
| 12183 | 'sec' would be NULL, and we should leave the symbol | |
| 12184 | alone (it will be set to zero elsewhere in the link). */ | |
| 5c5f6e17 AM |
12185 | if (sec == NULL) |
| 12186 | break; | |
| 12187 | /* Fall thru */ | |
| 12188 | ||
| 12189 | case R_PPC64_GOT16_HA: | |
| 12190 | case R_PPC64_PLTGOT16_HA: | |
| 12191 | case R_PPC64_PLT16_HA: | |
| 12192 | case R_PPC64_GOT_TLSGD16_HA: | |
| 12193 | case R_PPC64_GOT_TLSLD16_HA: | |
| 12194 | case R_PPC64_GOT_TPREL16_HA: | |
| 12195 | case R_PPC64_GOT_DTPREL16_HA: | |
| 12196 | /* Add 0x10000 if sign bit in 0:15 is set. | |
| 12197 | Bits 0:15 are not used. */ | |
| 12198 | addend += 0x8000; | |
| 65f38f15 AM |
12199 | break; |
| 12200 | ||
| 12201 | case R_PPC64_ADDR16_DS: | |
| 12202 | case R_PPC64_ADDR16_LO_DS: | |
| 12203 | case R_PPC64_GOT16_DS: | |
| 12204 | case R_PPC64_GOT16_LO_DS: | |
| 12205 | case R_PPC64_PLT16_LO_DS: | |
| 12206 | case R_PPC64_SECTOFF_DS: | |
| 12207 | case R_PPC64_SECTOFF_LO_DS: | |
| 12208 | case R_PPC64_TOC16_DS: | |
| 12209 | case R_PPC64_TOC16_LO_DS: | |
| 12210 | case R_PPC64_PLTGOT16_DS: | |
| 12211 | case R_PPC64_PLTGOT16_LO_DS: | |
| 411e1bfb AM |
12212 | case R_PPC64_GOT_TPREL16_DS: |
| 12213 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 12214 | case R_PPC64_GOT_DTPREL16_DS: | |
| 12215 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 12216 | case R_PPC64_TPREL16_DS: | |
| 12217 | case R_PPC64_TPREL16_LO_DS: | |
| 12218 | case R_PPC64_DTPREL16_DS: | |
| 12219 | case R_PPC64_DTPREL16_LO_DS: | |
| adadcc0c AM |
12220 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
| 12221 | mask = 3; | |
| 12222 | /* If this reloc is against an lq insn, then the value must be | |
| 12223 | a multiple of 16. This is somewhat of a hack, but the | |
| 12224 | "correct" way to do this by defining _DQ forms of all the | |
| 12225 | _DS relocs bloats all reloc switches in this file. It | |
| 12226 | doesn't seem to make much sense to use any of these relocs | |
| 12227 | in data, so testing the insn should be safe. */ | |
| 494dac0c | 12228 | if ((insn & (0x3f << 26)) == (56u << 26)) |
| adadcc0c AM |
12229 | mask = 15; |
| 12230 | if (((relocation + addend) & mask) != 0) | |
| 65f38f15 AM |
12231 | { |
| 12232 | (*_bfd_error_handler) | |
| d003868e AM |
12233 | (_("%B: error: relocation %s not a multiple of %d"), |
| 12234 | input_bfd, | |
| 4ce794b7 | 12235 | ppc64_elf_howto_table[r_type]->name, |
| adadcc0c | 12236 | mask + 1); |
| 65f38f15 | 12237 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 12238 | ret = FALSE; |
| 65f38f15 AM |
12239 | continue; |
| 12240 | } | |
| 12241 | break; | |
| 5bd4f169 AM |
12242 | } |
| 12243 | ||
| 239e1f3a AM |
12244 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 12245 | because such sections are not SEC_ALLOC and thus ld.so will | |
| 12246 | not process them. */ | |
| 65f38f15 | 12247 | if (unresolved_reloc |
| 239e1f3a | 12248 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
| f5385ebf | 12249 | && h->elf.def_dynamic)) |
| 9c07fe7c AM |
12250 | { |
| 12251 | (*_bfd_error_handler) | |
| d003868e AM |
12252 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
| 12253 | input_bfd, | |
| 12254 | input_section, | |
| 9c07fe7c | 12255 | (long) rel->r_offset, |
| 7b609f53 | 12256 | ppc64_elf_howto_table[(int) r_type]->name, |
| 039b3fef | 12257 | h->elf.root.root.string); |
| b34976b6 | 12258 | ret = FALSE; |
| 9c07fe7c | 12259 | } |
| 5bd4f169 | 12260 | |
| 65f38f15 | 12261 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
| 5bd4f169 AM |
12262 | input_bfd, |
| 12263 | input_section, | |
| 12264 | contents, | |
| 411e1bfb | 12265 | rel->r_offset, |
| 5bd4f169 AM |
12266 | relocation, |
| 12267 | addend); | |
| 12268 | ||
| ef60b7ff | 12269 | if (r != bfd_reloc_ok) |
| 5bd4f169 | 12270 | { |
| cd27b276 AM |
12271 | if (sym_name == NULL) |
| 12272 | sym_name = "(null)"; | |
| 12273 | if (r == bfd_reloc_overflow) | |
| 5bd4f169 | 12274 | { |
| cd27b276 AM |
12275 | if (warned) |
| 12276 | continue; | |
| 12277 | if (h != NULL | |
| 039b3fef | 12278 | && h->elf.root.type == bfd_link_hash_undefweak |
| 4ce794b7 | 12279 | && ppc64_elf_howto_table[r_type]->pc_relative) |
| 5bd4f169 AM |
12280 | { |
| 12281 | /* Assume this is a call protected by other code that | |
| 12282 | detects the symbol is undefined. If this is the case, | |
| 12283 | we can safely ignore the overflow. If not, the | |
| 12284 | program is hosed anyway, and a little warning isn't | |
| 12285 | going to help. */ | |
| 12286 | ||
| 12287 | continue; | |
| 12288 | } | |
| 12289 | ||
| ef60b7ff | 12290 | if (!((*info->callbacks->reloc_overflow) |
| dfeffb9f L |
12291 | (info, (h ? &h->elf.root : NULL), sym_name, |
| 12292 | ppc64_elf_howto_table[r_type]->name, | |
| 4cc603a5 | 12293 | orig_addend, input_bfd, input_section, rel->r_offset))) |
| b34976b6 | 12294 | return FALSE; |
| ef60b7ff AM |
12295 | } |
| 12296 | else | |
| 12297 | { | |
| 12298 | (*_bfd_error_handler) | |
| d003868e AM |
12299 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
| 12300 | input_bfd, | |
| 12301 | input_section, | |
| 7b609f53 | 12302 | (long) rel->r_offset, |
| 4ce794b7 | 12303 | ppc64_elf_howto_table[r_type]->name, |
| 7b609f53 AM |
12304 | sym_name, |
| 12305 | (int) r); | |
| b34976b6 | 12306 | ret = FALSE; |
| ef60b7ff | 12307 | } |
| 5bd4f169 | 12308 | } |
| 5bd4f169 AM |
12309 | } |
| 12310 | ||
| 645ea6a9 AM |
12311 | /* If we're emitting relocations, then shortly after this function |
| 12312 | returns, reloc offsets and addends for this section will be | |
| 12313 | adjusted. Worse, reloc symbol indices will be for the output | |
| 8860955f AM |
12314 | file rather than the input. Save a copy of the relocs for |
| 12315 | opd_entry_value. */ | |
| 4cc603a5 | 12316 | if (is_opd && (info->emitrelocations || info->relocatable)) |
| 8860955f AM |
12317 | { |
| 12318 | bfd_size_type amt; | |
| 12319 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
| 12320 | rel = bfd_alloc (input_bfd, amt); | |
| 12321 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
| 12322 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
| 12323 | if (rel == NULL) | |
| 12324 | return FALSE; | |
| 12325 | memcpy (rel, relocs, amt); | |
| 12326 | } | |
| 5bd4f169 AM |
12327 | return ret; |
| 12328 | } | |
| 12329 | ||
| 754021d0 AM |
12330 | /* Adjust the value of any local symbols in opd sections. */ |
| 12331 | ||
| 6e0b88f1 | 12332 | static int |
| 754021d0 AM |
12333 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
| 12334 | const char *name ATTRIBUTE_UNUSED, | |
| 12335 | Elf_Internal_Sym *elfsym, | |
| 12336 | asection *input_sec, | |
| 12337 | struct elf_link_hash_entry *h) | |
| 12338 | { | |
| 74f0fb50 AM |
12339 | struct _opd_sec_data *opd; |
| 12340 | long adjust; | |
| 754021d0 AM |
12341 | bfd_vma value; |
| 12342 | ||
| 4025353c | 12343 | if (h != NULL) |
| 6e0b88f1 | 12344 | return 1; |
| 4025353c | 12345 | |
| 74f0fb50 AM |
12346 | opd = get_opd_info (input_sec); |
| 12347 | if (opd == NULL || opd->adjust == NULL) | |
| 6e0b88f1 | 12348 | return 1; |
| 754021d0 AM |
12349 | |
| 12350 | value = elfsym->st_value - input_sec->output_offset; | |
| 12351 | if (!info->relocatable) | |
| 12352 | value -= input_sec->output_section->vma; | |
| 12353 | ||
| 74f0fb50 | 12354 | adjust = opd->adjust[value / 8]; |
| 4025353c | 12355 | if (adjust == -1) |
| 6e0b88f1 AM |
12356 | return 2; |
| 12357 | ||
| 12358 | elfsym->st_value += adjust; | |
| 12359 | return 1; | |
| 754021d0 AM |
12360 | } |
| 12361 | ||
| 5bd4f169 AM |
12362 | /* Finish up dynamic symbol handling. We set the contents of various |
| 12363 | dynamic sections here. */ | |
| 12364 | ||
| b34976b6 | 12365 | static bfd_boolean |
| 4ce794b7 AM |
12366 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
| 12367 | struct bfd_link_info *info, | |
| 12368 | struct elf_link_hash_entry *h, | |
| 12369 | Elf_Internal_Sym *sym) | |
| 5bd4f169 | 12370 | { |
| 65f38f15 | 12371 | struct ppc_link_hash_table *htab; |
| 8387904d AM |
12372 | struct plt_entry *ent; |
| 12373 | Elf_Internal_Rela rela; | |
| 12374 | bfd_byte *loc; | |
| 5bd4f169 | 12375 | |
| 65f38f15 | 12376 | htab = ppc_hash_table (info); |
| 5bd4f169 | 12377 | |
| 8387904d AM |
12378 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
| 12379 | if (ent->plt.offset != (bfd_vma) -1) | |
| 12380 | { | |
| 12381 | /* This symbol has an entry in the procedure linkage | |
| 12382 | table. Set it up. */ | |
| e054468f AM |
12383 | if (!htab->elf.dynamic_sections_created |
| 12384 | || h->dynindx == -1) | |
| 12385 | { | |
| 12386 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
| 12387 | && h->def_regular | |
| 12388 | && (h->root.type == bfd_link_hash_defined | |
| 12389 | || h->root.type == bfd_link_hash_defweak)); | |
| 25f23106 AM |
12390 | rela.r_offset = (htab->iplt->output_section->vma |
| 12391 | + htab->iplt->output_offset | |
| 12392 | + ent->plt.offset); | |
| 12393 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
| e054468f AM |
12394 | rela.r_addend = (h->root.u.def.value |
| 12395 | + h->root.u.def.section->output_offset | |
| 12396 | + h->root.u.def.section->output_section->vma | |
| 12397 | + ent->addend); | |
| 25f23106 AM |
12398 | loc = (htab->reliplt->contents |
| 12399 | + (htab->reliplt->reloc_count++ | |
| 12400 | * sizeof (Elf64_External_Rela))); | |
| e054468f AM |
12401 | } |
| 12402 | else | |
| 12403 | { | |
| 25f23106 AM |
12404 | rela.r_offset = (htab->plt->output_section->vma |
| 12405 | + htab->plt->output_offset | |
| 12406 | + ent->plt.offset); | |
| e054468f AM |
12407 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
| 12408 | rela.r_addend = ent->addend; | |
| 25f23106 AM |
12409 | loc = (htab->relplt->contents |
| 12410 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) | |
| 12411 | / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); | |
| e054468f | 12412 | } |
| 8387904d AM |
12413 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| 12414 | } | |
| 5bd4f169 | 12415 | |
| f5385ebf | 12416 | if (h->needs_copy) |
| 5bd4f169 | 12417 | { |
| 65f38f15 | 12418 | /* This symbol needs a copy reloc. Set it up. */ |
| 5bd4f169 | 12419 | |
| 65f38f15 AM |
12420 | if (h->dynindx == -1 |
| 12421 | || (h->root.type != bfd_link_hash_defined | |
| 12422 | && h->root.type != bfd_link_hash_defweak) | |
| 4ce794b7 | 12423 | || htab->relbss == NULL) |
| 65f38f15 | 12424 | abort (); |
| 5bd4f169 AM |
12425 | |
| 12426 | rela.r_offset = (h->root.u.def.value | |
| 12427 | + h->root.u.def.section->output_section->vma | |
| 12428 | + h->root.u.def.section->output_offset); | |
| 12429 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
| 12430 | rela.r_addend = 0; | |
| 4ce794b7 AM |
12431 | loc = htab->relbss->contents; |
| 12432 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 | 12433 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| 5bd4f169 AM |
12434 | } |
| 12435 | ||
| 5bd4f169 AM |
12436 | /* Mark some specially defined symbols as absolute. */ |
| 12437 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
| 12438 | sym->st_shndx = SHN_ABS; | |
| 12439 | ||
| b34976b6 | 12440 | return TRUE; |
| 5bd4f169 AM |
12441 | } |
| 12442 | ||
| 65f38f15 AM |
12443 | /* Used to decide how to sort relocs in an optimal manner for the |
| 12444 | dynamic linker, before writing them out. */ | |
| 12445 | ||
| 12446 | static enum elf_reloc_type_class | |
| 4ce794b7 | 12447 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
| 65f38f15 | 12448 | { |
| 04c9666a | 12449 | enum elf_ppc64_reloc_type r_type; |
| a33d1f77 | 12450 | |
| 4ce794b7 | 12451 | r_type = ELF64_R_TYPE (rela->r_info); |
| a33d1f77 | 12452 | switch (r_type) |
| 65f38f15 AM |
12453 | { |
| 12454 | case R_PPC64_RELATIVE: | |
| 12455 | return reloc_class_relative; | |
| 12456 | case R_PPC64_JMP_SLOT: | |
| 12457 | return reloc_class_plt; | |
| 12458 | case R_PPC64_COPY: | |
| 12459 | return reloc_class_copy; | |
| 12460 | default: | |
| 12461 | return reloc_class_normal; | |
| 12462 | } | |
| 12463 | } | |
| 12464 | ||
| 5bd4f169 AM |
12465 | /* Finish up the dynamic sections. */ |
| 12466 | ||
| b34976b6 | 12467 | static bfd_boolean |
| 4ce794b7 AM |
12468 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
| 12469 | struct bfd_link_info *info) | |
| 5bd4f169 | 12470 | { |
| 65f38f15 AM |
12471 | struct ppc_link_hash_table *htab; |
| 12472 | bfd *dynobj; | |
| 5bd4f169 | 12473 | asection *sdyn; |
| 5bd4f169 | 12474 | |
| 65f38f15 AM |
12475 | htab = ppc_hash_table (info); |
| 12476 | dynobj = htab->elf.dynobj; | |
| 5bd4f169 AM |
12477 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 12478 | ||
| 65f38f15 | 12479 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 | 12480 | { |
| 5bd4f169 AM |
12481 | Elf64_External_Dyn *dyncon, *dynconend; |
| 12482 | ||
| 4ce794b7 | 12483 | if (sdyn == NULL || htab->got == NULL) |
| 65f38f15 | 12484 | abort (); |
| 5bd4f169 AM |
12485 | |
| 12486 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
| eea6121a | 12487 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
| 5bd4f169 AM |
12488 | for (; dyncon < dynconend; dyncon++) |
| 12489 | { | |
| 12490 | Elf_Internal_Dyn dyn; | |
| 19397422 | 12491 | asection *s; |
| 5bd4f169 AM |
12492 | |
| 12493 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
| 12494 | ||
| 12495 | switch (dyn.d_tag) | |
| 12496 | { | |
| 65f38f15 AM |
12497 | default: |
| 12498 | continue; | |
| 5bd4f169 | 12499 | |
| 5d1634d7 | 12500 | case DT_PPC64_GLINK: |
| 4ce794b7 | 12501 | s = htab->glink; |
| 6348e046 | 12502 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| ad8e1ba5 AM |
12503 | /* We stupidly defined DT_PPC64_GLINK to be the start |
| 12504 | of glink rather than the first entry point, which is | |
| 12505 | what ld.so needs, and now have a bigger stub to | |
| 12506 | support automatic multiple TOCs. */ | |
| 12507 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
| 5d1634d7 AM |
12508 | break; |
| 12509 | ||
| 19397422 AM |
12510 | case DT_PPC64_OPD: |
| 12511 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
12512 | if (s == NULL) |
| 12513 | continue; | |
| 12514 | dyn.d_un.d_ptr = s->vma; | |
| 19397422 AM |
12515 | break; |
| 12516 | ||
| 12517 | case DT_PPC64_OPDSZ: | |
| 12518 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
12519 | if (s == NULL) |
| 12520 | continue; | |
| eea6121a | 12521 | dyn.d_un.d_val = s->size; |
| 19397422 AM |
12522 | break; |
| 12523 | ||
| 65f38f15 | 12524 | case DT_PLTGOT: |
| 4ce794b7 | 12525 | s = htab->plt; |
| 6348e046 | 12526 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 AM |
12527 | break; |
| 12528 | ||
| 12529 | case DT_JMPREL: | |
| 4ce794b7 | 12530 | s = htab->relplt; |
| 6348e046 | 12531 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 | 12532 | break; |
| 5bd4f169 | 12533 | |
| 65f38f15 | 12534 | case DT_PLTRELSZ: |
| eea6121a | 12535 | dyn.d_un.d_val = htab->relplt->size; |
| 5d1634d7 AM |
12536 | break; |
| 12537 | ||
| 12538 | case DT_RELASZ: | |
| 12539 | /* Don't count procedure linkage table relocs in the | |
| 12540 | overall reloc count. */ | |
| 4ce794b7 | 12541 | s = htab->relplt; |
| 6348e046 AM |
12542 | if (s == NULL) |
| 12543 | continue; | |
| eea6121a | 12544 | dyn.d_un.d_val -= s->size; |
| 6348e046 AM |
12545 | break; |
| 12546 | ||
| 12547 | case DT_RELA: | |
| 12548 | /* We may not be using the standard ELF linker script. | |
| 12549 | If .rela.plt is the first .rela section, we adjust | |
| 12550 | DT_RELA to not include it. */ | |
| 4ce794b7 | 12551 | s = htab->relplt; |
| 6348e046 AM |
12552 | if (s == NULL) |
| 12553 | continue; | |
| 12554 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
| 12555 | continue; | |
| eea6121a | 12556 | dyn.d_un.d_ptr += s->size; |
| 65f38f15 | 12557 | break; |
| 5bd4f169 | 12558 | } |
| 5bd4f169 | 12559 | |
| 65f38f15 | 12560 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5bd4f169 | 12561 | } |
| 5bd4f169 AM |
12562 | } |
| 12563 | ||
| eea6121a | 12564 | if (htab->got != NULL && htab->got->size != 0) |
| 5d1634d7 AM |
12565 | { |
| 12566 | /* Fill in the first entry in the global offset table. | |
| 12567 | We use it to hold the link-time TOCbase. */ | |
| 12568 | bfd_put_64 (output_bfd, | |
| 60ee0d4a | 12569 | elf_gp (output_bfd) + TOC_BASE_OFF, |
| 4ce794b7 | 12570 | htab->got->contents); |
| 5d1634d7 AM |
12571 | |
| 12572 | /* Set .got entry size. */ | |
| 4ce794b7 | 12573 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
| 5d1634d7 AM |
12574 | } |
| 12575 | ||
| eea6121a | 12576 | if (htab->plt != NULL && htab->plt->size != 0) |
| 5d1634d7 AM |
12577 | { |
| 12578 | /* Set .plt entry size. */ | |
| 4ce794b7 | 12579 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
| 5d1634d7 AM |
12580 | = PLT_ENTRY_SIZE; |
| 12581 | } | |
| 12582 | ||
| 84f5d08e AM |
12583 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
| 12584 | brlt ourselves if emitrelocations. */ | |
| 12585 | if (htab->brlt != NULL | |
| 12586 | && htab->brlt->reloc_count != 0 | |
| 12587 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 12588 | htab->brlt, | |
| 12589 | &elf_section_data (htab->brlt)->rel_hdr, | |
| 12590 | elf_section_data (htab->brlt)->relocs, | |
| 12591 | NULL)) | |
| 12592 | return FALSE; | |
| 12593 | ||
| 176a0d42 AM |
12594 | if (htab->glink != NULL |
| 12595 | && htab->glink->reloc_count != 0 | |
| 12596 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 12597 | htab->glink, | |
| 12598 | &elf_section_data (htab->glink)->rel_hdr, | |
| 12599 | elf_section_data (htab->glink)->relocs, | |
| 12600 | NULL)) | |
| 12601 | return FALSE; | |
| 12602 | ||
| e717da7e | 12603 | /* We need to handle writing out multiple GOT sections ourselves, |
| 7b53ace3 AM |
12604 | since we didn't add them to DYNOBJ. We know dynobj is the first |
| 12605 | bfd. */ | |
| e717da7e AM |
12606 | while ((dynobj = dynobj->link_next) != NULL) |
| 12607 | { | |
| 12608 | asection *s; | |
| 7b53ace3 | 12609 | |
| 0c8d6e5c | 12610 | if (!is_ppc64_elf (dynobj)) |
| 7b53ace3 AM |
12611 | continue; |
| 12612 | ||
| e717da7e AM |
12613 | s = ppc64_elf_tdata (dynobj)->got; |
| 12614 | if (s != NULL | |
| eea6121a | 12615 | && s->size != 0 |
| e717da7e AM |
12616 | && s->output_section != bfd_abs_section_ptr |
| 12617 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 12618 | s->contents, s->output_offset, | |
| eea6121a | 12619 | s->size)) |
| e717da7e AM |
12620 | return FALSE; |
| 12621 | s = ppc64_elf_tdata (dynobj)->relgot; | |
| 12622 | if (s != NULL | |
| eea6121a | 12623 | && s->size != 0 |
| e717da7e AM |
12624 | && s->output_section != bfd_abs_section_ptr |
| 12625 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 12626 | s->contents, s->output_offset, | |
| eea6121a | 12627 | s->size)) |
| e717da7e AM |
12628 | return FALSE; |
| 12629 | } | |
| f6c52c13 | 12630 | |
| b34976b6 | 12631 | return TRUE; |
| 5bd4f169 AM |
12632 | } |
| 12633 | ||
| 5bd4f169 | 12634 | #include "elf64-target.h" |