1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011 Free Software Foundation, Inc.
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
8 This file is part of BFD, the Binary File Descriptor library.
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
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
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.
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.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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 */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *);
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_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x1000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
85 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
86 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
87 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_process_dot_syms
98 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
108 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
109 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
110 #define elf_backend_action_discarded ppc64_elf_action_discarded
111 #define elf_backend_relocate_section ppc64_elf_relocate_section
112 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
113 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
114 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
115 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
116 #define elf_backend_special_sections ppc64_elf_special_sections
117 #define elf_backend_post_process_headers _bfd_elf_set_osabi
119 /* The name of the dynamic interpreter. This is put in the .interp
121 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
123 /* The size in bytes of an entry in the procedure linkage table. */
124 #define PLT_ENTRY_SIZE 24
126 /* The initial size of the plt reserved for the dynamic linker. */
127 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
129 /* TOC base pointers offset from start of TOC. */
130 #define TOC_BASE_OFF 0x8000
132 /* Offset of tp and dtp pointers from start of TLS block. */
133 #define TP_OFFSET 0x7000
134 #define DTP_OFFSET 0x8000
136 /* .plt call stub instructions. The normal stub is like this, but
137 sometimes the .plt entry crosses a 64k boundary and we need to
138 insert an addi to adjust r12. */
139 #define PLT_CALL_STUB_SIZE (7*4)
140 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
141 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
142 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
143 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
144 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
145 /* ld %r11,xxx+16@l(%r12) */
146 #define BCTR 0x4e800420 /* bctr */
149 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
150 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
151 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
152 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
154 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
155 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
157 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
159 /* glink call stub instructions. We enter with the index in R0. */
160 #define GLINK_CALL_STUB_SIZE (16*4)
164 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
165 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
167 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
168 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
169 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
170 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
178 #define NOP 0x60000000
180 /* Some other nops. */
181 #define CROR_151515 0x4def7b82
182 #define CROR_313131 0x4ffffb82
184 /* .glink entries for the first 32k functions are two instructions. */
185 #define LI_R0_0 0x38000000 /* li %r0,0 */
186 #define B_DOT 0x48000000 /* b . */
188 /* After that, we need two instructions to load the index, followed by
190 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
191 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
193 /* Instructions used by the save and restore reg functions. */
194 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
195 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
196 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
197 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
198 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
199 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
200 #define LI_R12_0 0x39800000 /* li %r12,0 */
201 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
202 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
203 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
204 #define BLR 0x4e800020 /* blr */
206 /* Since .opd is an array of descriptors and each entry will end up
207 with identical R_PPC64_RELATIVE relocs, there is really no need to
208 propagate .opd relocs; The dynamic linker should be taught to
209 relocate .opd without reloc entries. */
210 #ifndef NO_OPD_RELOCS
211 #define NO_OPD_RELOCS 0
214 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
216 /* Relocation HOWTO's. */
217 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
219 static reloc_howto_type ppc64_elf_howto_raw[] = {
220 /* This reloc does nothing. */
221 HOWTO (R_PPC64_NONE, /* type */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
225 FALSE, /* pc_relative */
227 complain_overflow_dont, /* complain_on_overflow */
228 bfd_elf_generic_reloc, /* special_function */
229 "R_PPC64_NONE", /* name */
230 FALSE, /* partial_inplace */
233 FALSE), /* pcrel_offset */
235 /* A standard 32 bit relocation. */
236 HOWTO (R_PPC64_ADDR32, /* type */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
240 FALSE, /* pc_relative */
242 complain_overflow_bitfield, /* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_PPC64_ADDR32", /* name */
245 FALSE, /* partial_inplace */
247 0xffffffff, /* dst_mask */
248 FALSE), /* pcrel_offset */
250 /* An absolute 26 bit branch; the lower two bits must be zero.
251 FIXME: we don't check that, we just clear them. */
252 HOWTO (R_PPC64_ADDR24, /* type */
254 2, /* size (0 = byte, 1 = short, 2 = long) */
256 FALSE, /* pc_relative */
258 complain_overflow_bitfield, /* complain_on_overflow */
259 bfd_elf_generic_reloc, /* special_function */
260 "R_PPC64_ADDR24", /* name */
261 FALSE, /* partial_inplace */
263 0x03fffffc, /* dst_mask */
264 FALSE), /* pcrel_offset */
266 /* A standard 16 bit relocation. */
267 HOWTO (R_PPC64_ADDR16, /* type */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
271 FALSE, /* pc_relative */
273 complain_overflow_bitfield, /* complain_on_overflow */
274 bfd_elf_generic_reloc, /* special_function */
275 "R_PPC64_ADDR16", /* name */
276 FALSE, /* partial_inplace */
278 0xffff, /* dst_mask */
279 FALSE), /* pcrel_offset */
281 /* A 16 bit relocation without overflow. */
282 HOWTO (R_PPC64_ADDR16_LO, /* type */
284 1, /* size (0 = byte, 1 = short, 2 = long) */
286 FALSE, /* pc_relative */
288 complain_overflow_dont,/* complain_on_overflow */
289 bfd_elf_generic_reloc, /* special_function */
290 "R_PPC64_ADDR16_LO", /* name */
291 FALSE, /* partial_inplace */
293 0xffff, /* dst_mask */
294 FALSE), /* pcrel_offset */
296 /* Bits 16-31 of an address. */
297 HOWTO (R_PPC64_ADDR16_HI, /* type */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
301 FALSE, /* pc_relative */
303 complain_overflow_dont, /* complain_on_overflow */
304 bfd_elf_generic_reloc, /* special_function */
305 "R_PPC64_ADDR16_HI", /* name */
306 FALSE, /* partial_inplace */
308 0xffff, /* dst_mask */
309 FALSE), /* pcrel_offset */
311 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
312 bits, treated as a signed number, is negative. */
313 HOWTO (R_PPC64_ADDR16_HA, /* type */
315 1, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE, /* pc_relative */
319 complain_overflow_dont, /* complain_on_overflow */
320 ppc64_elf_ha_reloc, /* special_function */
321 "R_PPC64_ADDR16_HA", /* name */
322 FALSE, /* partial_inplace */
324 0xffff, /* dst_mask */
325 FALSE), /* pcrel_offset */
327 /* An absolute 16 bit branch; the lower two bits must be zero.
328 FIXME: we don't check that, we just clear them. */
329 HOWTO (R_PPC64_ADDR14, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE, /* pc_relative */
335 complain_overflow_bitfield, /* complain_on_overflow */
336 ppc64_elf_branch_reloc, /* special_function */
337 "R_PPC64_ADDR14", /* name */
338 FALSE, /* partial_inplace */
340 0x0000fffc, /* dst_mask */
341 FALSE), /* pcrel_offset */
343 /* An absolute 16 bit branch, for which bit 10 should be set to
344 indicate that the branch is expected to be taken. The lower two
345 bits must be zero. */
346 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE, /* pc_relative */
352 complain_overflow_bitfield, /* complain_on_overflow */
353 ppc64_elf_brtaken_reloc, /* special_function */
354 "R_PPC64_ADDR14_BRTAKEN",/* name */
355 FALSE, /* partial_inplace */
357 0x0000fffc, /* dst_mask */
358 FALSE), /* pcrel_offset */
360 /* An absolute 16 bit branch, for which bit 10 should be set to
361 indicate that the branch is not expected to be taken. The lower
362 two bits must be zero. */
363 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 FALSE, /* pc_relative */
369 complain_overflow_bitfield, /* complain_on_overflow */
370 ppc64_elf_brtaken_reloc, /* special_function */
371 "R_PPC64_ADDR14_BRNTAKEN",/* name */
372 FALSE, /* partial_inplace */
374 0x0000fffc, /* dst_mask */
375 FALSE), /* pcrel_offset */
377 /* A relative 26 bit branch; the lower two bits must be zero. */
378 HOWTO (R_PPC64_REL24, /* type */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
382 TRUE, /* pc_relative */
384 complain_overflow_signed, /* complain_on_overflow */
385 ppc64_elf_branch_reloc, /* special_function */
386 "R_PPC64_REL24", /* name */
387 FALSE, /* partial_inplace */
389 0x03fffffc, /* dst_mask */
390 TRUE), /* pcrel_offset */
392 /* A relative 16 bit branch; the lower two bits must be zero. */
393 HOWTO (R_PPC64_REL14, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 TRUE, /* pc_relative */
399 complain_overflow_signed, /* complain_on_overflow */
400 ppc64_elf_branch_reloc, /* special_function */
401 "R_PPC64_REL14", /* name */
402 FALSE, /* partial_inplace */
404 0x0000fffc, /* dst_mask */
405 TRUE), /* pcrel_offset */
407 /* A relative 16 bit branch. Bit 10 should be set to indicate that
408 the branch is expected to be taken. The lower two bits must be
410 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
414 TRUE, /* pc_relative */
416 complain_overflow_signed, /* complain_on_overflow */
417 ppc64_elf_brtaken_reloc, /* special_function */
418 "R_PPC64_REL14_BRTAKEN", /* name */
419 FALSE, /* partial_inplace */
421 0x0000fffc, /* dst_mask */
422 TRUE), /* pcrel_offset */
424 /* A relative 16 bit branch. Bit 10 should be set to indicate that
425 the branch is not expected to be taken. The lower two bits must
427 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
429 2, /* size (0 = byte, 1 = short, 2 = long) */
431 TRUE, /* pc_relative */
433 complain_overflow_signed, /* complain_on_overflow */
434 ppc64_elf_brtaken_reloc, /* special_function */
435 "R_PPC64_REL14_BRNTAKEN",/* name */
436 FALSE, /* partial_inplace */
438 0x0000fffc, /* dst_mask */
439 TRUE), /* pcrel_offset */
441 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
443 HOWTO (R_PPC64_GOT16, /* type */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
447 FALSE, /* pc_relative */
449 complain_overflow_signed, /* complain_on_overflow */
450 ppc64_elf_unhandled_reloc, /* special_function */
451 "R_PPC64_GOT16", /* name */
452 FALSE, /* partial_inplace */
454 0xffff, /* dst_mask */
455 FALSE), /* pcrel_offset */
457 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
459 HOWTO (R_PPC64_GOT16_LO, /* type */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
463 FALSE, /* pc_relative */
465 complain_overflow_dont, /* complain_on_overflow */
466 ppc64_elf_unhandled_reloc, /* special_function */
467 "R_PPC64_GOT16_LO", /* name */
468 FALSE, /* partial_inplace */
470 0xffff, /* dst_mask */
471 FALSE), /* pcrel_offset */
473 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
475 HOWTO (R_PPC64_GOT16_HI, /* type */
477 1, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE, /* pc_relative */
481 complain_overflow_dont,/* complain_on_overflow */
482 ppc64_elf_unhandled_reloc, /* special_function */
483 "R_PPC64_GOT16_HI", /* name */
484 FALSE, /* partial_inplace */
486 0xffff, /* dst_mask */
487 FALSE), /* pcrel_offset */
489 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
491 HOWTO (R_PPC64_GOT16_HA, /* type */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
495 FALSE, /* pc_relative */
497 complain_overflow_dont,/* complain_on_overflow */
498 ppc64_elf_unhandled_reloc, /* special_function */
499 "R_PPC64_GOT16_HA", /* name */
500 FALSE, /* partial_inplace */
502 0xffff, /* dst_mask */
503 FALSE), /* pcrel_offset */
505 /* This is used only by the dynamic linker. The symbol should exist
506 both in the object being run and in some shared library. The
507 dynamic linker copies the data addressed by the symbol from the
508 shared library into the object, because the object being
509 run has to have the data at some particular address. */
510 HOWTO (R_PPC64_COPY, /* type */
512 0, /* this one is variable size */
514 FALSE, /* pc_relative */
516 complain_overflow_dont, /* complain_on_overflow */
517 ppc64_elf_unhandled_reloc, /* special_function */
518 "R_PPC64_COPY", /* name */
519 FALSE, /* partial_inplace */
522 FALSE), /* pcrel_offset */
524 /* Like R_PPC64_ADDR64, but used when setting global offset table
526 HOWTO (R_PPC64_GLOB_DAT, /* type */
528 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
530 FALSE, /* pc_relative */
532 complain_overflow_dont, /* complain_on_overflow */
533 ppc64_elf_unhandled_reloc, /* special_function */
534 "R_PPC64_GLOB_DAT", /* name */
535 FALSE, /* partial_inplace */
537 ONES (64), /* dst_mask */
538 FALSE), /* pcrel_offset */
540 /* Created by the link editor. Marks a procedure linkage table
541 entry for a symbol. */
542 HOWTO (R_PPC64_JMP_SLOT, /* type */
544 0, /* size (0 = byte, 1 = short, 2 = long) */
546 FALSE, /* pc_relative */
548 complain_overflow_dont, /* complain_on_overflow */
549 ppc64_elf_unhandled_reloc, /* special_function */
550 "R_PPC64_JMP_SLOT", /* name */
551 FALSE, /* partial_inplace */
554 FALSE), /* pcrel_offset */
556 /* Used only by the dynamic linker. When the object is run, this
557 doubleword64 is set to the load address of the object, plus the
559 HOWTO (R_PPC64_RELATIVE, /* type */
561 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
563 FALSE, /* pc_relative */
565 complain_overflow_dont, /* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_PPC64_RELATIVE", /* name */
568 FALSE, /* partial_inplace */
570 ONES (64), /* dst_mask */
571 FALSE), /* pcrel_offset */
573 /* Like R_PPC64_ADDR32, but may be unaligned. */
574 HOWTO (R_PPC64_UADDR32, /* type */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
578 FALSE, /* pc_relative */
580 complain_overflow_bitfield, /* complain_on_overflow */
581 bfd_elf_generic_reloc, /* special_function */
582 "R_PPC64_UADDR32", /* name */
583 FALSE, /* partial_inplace */
585 0xffffffff, /* dst_mask */
586 FALSE), /* pcrel_offset */
588 /* Like R_PPC64_ADDR16, but may be unaligned. */
589 HOWTO (R_PPC64_UADDR16, /* type */
591 1, /* size (0 = byte, 1 = short, 2 = long) */
593 FALSE, /* pc_relative */
595 complain_overflow_bitfield, /* complain_on_overflow */
596 bfd_elf_generic_reloc, /* special_function */
597 "R_PPC64_UADDR16", /* name */
598 FALSE, /* partial_inplace */
600 0xffff, /* dst_mask */
601 FALSE), /* pcrel_offset */
603 /* 32-bit PC relative. */
604 HOWTO (R_PPC64_REL32, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 TRUE, /* pc_relative */
610 /* FIXME: Verify. Was complain_overflow_bitfield. */
611 complain_overflow_signed, /* complain_on_overflow */
612 bfd_elf_generic_reloc, /* special_function */
613 "R_PPC64_REL32", /* name */
614 FALSE, /* partial_inplace */
616 0xffffffff, /* dst_mask */
617 TRUE), /* pcrel_offset */
619 /* 32-bit relocation to the symbol's procedure linkage table. */
620 HOWTO (R_PPC64_PLT32, /* type */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
624 FALSE, /* pc_relative */
626 complain_overflow_bitfield, /* complain_on_overflow */
627 ppc64_elf_unhandled_reloc, /* special_function */
628 "R_PPC64_PLT32", /* name */
629 FALSE, /* partial_inplace */
631 0xffffffff, /* dst_mask */
632 FALSE), /* pcrel_offset */
634 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
635 FIXME: R_PPC64_PLTREL32 not supported. */
636 HOWTO (R_PPC64_PLTREL32, /* type */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
640 TRUE, /* pc_relative */
642 complain_overflow_signed, /* complain_on_overflow */
643 bfd_elf_generic_reloc, /* special_function */
644 "R_PPC64_PLTREL32", /* name */
645 FALSE, /* partial_inplace */
647 0xffffffff, /* dst_mask */
648 TRUE), /* pcrel_offset */
650 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
652 HOWTO (R_PPC64_PLT16_LO, /* type */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
656 FALSE, /* pc_relative */
658 complain_overflow_dont, /* complain_on_overflow */
659 ppc64_elf_unhandled_reloc, /* special_function */
660 "R_PPC64_PLT16_LO", /* name */
661 FALSE, /* partial_inplace */
663 0xffff, /* dst_mask */
664 FALSE), /* pcrel_offset */
666 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
668 HOWTO (R_PPC64_PLT16_HI, /* type */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
672 FALSE, /* pc_relative */
674 complain_overflow_dont, /* complain_on_overflow */
675 ppc64_elf_unhandled_reloc, /* special_function */
676 "R_PPC64_PLT16_HI", /* name */
677 FALSE, /* partial_inplace */
679 0xffff, /* dst_mask */
680 FALSE), /* pcrel_offset */
682 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
684 HOWTO (R_PPC64_PLT16_HA, /* type */
686 1, /* size (0 = byte, 1 = short, 2 = long) */
688 FALSE, /* pc_relative */
690 complain_overflow_dont, /* complain_on_overflow */
691 ppc64_elf_unhandled_reloc, /* special_function */
692 "R_PPC64_PLT16_HA", /* name */
693 FALSE, /* partial_inplace */
695 0xffff, /* dst_mask */
696 FALSE), /* pcrel_offset */
698 /* 16-bit section relative relocation. */
699 HOWTO (R_PPC64_SECTOFF, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE, /* pc_relative */
705 complain_overflow_bitfield, /* complain_on_overflow */
706 ppc64_elf_sectoff_reloc, /* special_function */
707 "R_PPC64_SECTOFF", /* name */
708 FALSE, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
713 /* Like R_PPC64_SECTOFF, but no overflow warning. */
714 HOWTO (R_PPC64_SECTOFF_LO, /* type */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
718 FALSE, /* pc_relative */
720 complain_overflow_dont, /* complain_on_overflow */
721 ppc64_elf_sectoff_reloc, /* special_function */
722 "R_PPC64_SECTOFF_LO", /* name */
723 FALSE, /* partial_inplace */
725 0xffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
728 /* 16-bit upper half section relative relocation. */
729 HOWTO (R_PPC64_SECTOFF_HI, /* type */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
733 FALSE, /* pc_relative */
735 complain_overflow_dont, /* complain_on_overflow */
736 ppc64_elf_sectoff_reloc, /* special_function */
737 "R_PPC64_SECTOFF_HI", /* name */
738 FALSE, /* partial_inplace */
740 0xffff, /* dst_mask */
741 FALSE), /* pcrel_offset */
743 /* 16-bit upper half adjusted section relative relocation. */
744 HOWTO (R_PPC64_SECTOFF_HA, /* type */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE, /* pc_relative */
750 complain_overflow_dont, /* complain_on_overflow */
751 ppc64_elf_sectoff_ha_reloc, /* special_function */
752 "R_PPC64_SECTOFF_HA", /* name */
753 FALSE, /* partial_inplace */
755 0xffff, /* dst_mask */
756 FALSE), /* pcrel_offset */
758 /* Like R_PPC64_REL24 without touching the two least significant bits. */
759 HOWTO (R_PPC64_REL30, /* type */
761 2, /* size (0 = byte, 1 = short, 2 = long) */
763 TRUE, /* pc_relative */
765 complain_overflow_dont, /* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_PPC64_REL30", /* name */
768 FALSE, /* partial_inplace */
770 0xfffffffc, /* dst_mask */
771 TRUE), /* pcrel_offset */
773 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
775 /* A standard 64-bit relocation. */
776 HOWTO (R_PPC64_ADDR64, /* type */
778 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
780 FALSE, /* pc_relative */
782 complain_overflow_dont, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_PPC64_ADDR64", /* name */
785 FALSE, /* partial_inplace */
787 ONES (64), /* dst_mask */
788 FALSE), /* pcrel_offset */
790 /* The bits 32-47 of an address. */
791 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE, /* pc_relative */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_PPC64_ADDR16_HIGHER", /* name */
800 FALSE, /* partial_inplace */
802 0xffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
805 /* The bits 32-47 of an address, plus 1 if the contents of the low
806 16 bits, treated as a signed number, is negative. */
807 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
809 1, /* size (0 = byte, 1 = short, 2 = long) */
811 FALSE, /* pc_relative */
813 complain_overflow_dont, /* complain_on_overflow */
814 ppc64_elf_ha_reloc, /* special_function */
815 "R_PPC64_ADDR16_HIGHERA", /* name */
816 FALSE, /* partial_inplace */
818 0xffff, /* dst_mask */
819 FALSE), /* pcrel_offset */
821 /* The bits 48-63 of an address. */
822 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
824 1, /* size (0 = byte, 1 = short, 2 = long) */
826 FALSE, /* pc_relative */
828 complain_overflow_dont, /* complain_on_overflow */
829 bfd_elf_generic_reloc, /* special_function */
830 "R_PPC64_ADDR16_HIGHEST", /* name */
831 FALSE, /* partial_inplace */
833 0xffff, /* dst_mask */
834 FALSE), /* pcrel_offset */
836 /* The bits 48-63 of an address, plus 1 if the contents of the low
837 16 bits, treated as a signed number, is negative. */
838 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
842 FALSE, /* pc_relative */
844 complain_overflow_dont, /* complain_on_overflow */
845 ppc64_elf_ha_reloc, /* special_function */
846 "R_PPC64_ADDR16_HIGHESTA", /* name */
847 FALSE, /* partial_inplace */
849 0xffff, /* dst_mask */
850 FALSE), /* pcrel_offset */
852 /* Like ADDR64, but may be unaligned. */
853 HOWTO (R_PPC64_UADDR64, /* type */
855 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
857 FALSE, /* pc_relative */
859 complain_overflow_dont, /* complain_on_overflow */
860 bfd_elf_generic_reloc, /* special_function */
861 "R_PPC64_UADDR64", /* name */
862 FALSE, /* partial_inplace */
864 ONES (64), /* dst_mask */
865 FALSE), /* pcrel_offset */
867 /* 64-bit relative relocation. */
868 HOWTO (R_PPC64_REL64, /* type */
870 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
872 TRUE, /* pc_relative */
874 complain_overflow_dont, /* complain_on_overflow */
875 bfd_elf_generic_reloc, /* special_function */
876 "R_PPC64_REL64", /* name */
877 FALSE, /* partial_inplace */
879 ONES (64), /* dst_mask */
880 TRUE), /* pcrel_offset */
882 /* 64-bit relocation to the symbol's procedure linkage table. */
883 HOWTO (R_PPC64_PLT64, /* type */
885 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
887 FALSE, /* pc_relative */
889 complain_overflow_dont, /* complain_on_overflow */
890 ppc64_elf_unhandled_reloc, /* special_function */
891 "R_PPC64_PLT64", /* name */
892 FALSE, /* partial_inplace */
894 ONES (64), /* dst_mask */
895 FALSE), /* pcrel_offset */
897 /* 64-bit PC relative relocation to the symbol's procedure linkage
899 /* FIXME: R_PPC64_PLTREL64 not supported. */
900 HOWTO (R_PPC64_PLTREL64, /* type */
902 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
904 TRUE, /* pc_relative */
906 complain_overflow_dont, /* complain_on_overflow */
907 ppc64_elf_unhandled_reloc, /* special_function */
908 "R_PPC64_PLTREL64", /* name */
909 FALSE, /* partial_inplace */
911 ONES (64), /* dst_mask */
912 TRUE), /* pcrel_offset */
914 /* 16 bit TOC-relative relocation. */
916 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
917 HOWTO (R_PPC64_TOC16, /* type */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
921 FALSE, /* pc_relative */
923 complain_overflow_signed, /* complain_on_overflow */
924 ppc64_elf_toc_reloc, /* special_function */
925 "R_PPC64_TOC16", /* name */
926 FALSE, /* partial_inplace */
928 0xffff, /* dst_mask */
929 FALSE), /* pcrel_offset */
931 /* 16 bit TOC-relative relocation without overflow. */
933 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
934 HOWTO (R_PPC64_TOC16_LO, /* type */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
938 FALSE, /* pc_relative */
940 complain_overflow_dont, /* complain_on_overflow */
941 ppc64_elf_toc_reloc, /* special_function */
942 "R_PPC64_TOC16_LO", /* name */
943 FALSE, /* partial_inplace */
945 0xffff, /* dst_mask */
946 FALSE), /* pcrel_offset */
948 /* 16 bit TOC-relative relocation, high 16 bits. */
950 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
951 HOWTO (R_PPC64_TOC16_HI, /* type */
953 1, /* size (0 = byte, 1 = short, 2 = long) */
955 FALSE, /* pc_relative */
957 complain_overflow_dont, /* complain_on_overflow */
958 ppc64_elf_toc_reloc, /* special_function */
959 "R_PPC64_TOC16_HI", /* name */
960 FALSE, /* partial_inplace */
962 0xffff, /* dst_mask */
963 FALSE), /* pcrel_offset */
965 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
966 contents of the low 16 bits, treated as a signed number, is
969 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
970 HOWTO (R_PPC64_TOC16_HA, /* type */
972 1, /* size (0 = byte, 1 = short, 2 = long) */
974 FALSE, /* pc_relative */
976 complain_overflow_dont, /* complain_on_overflow */
977 ppc64_elf_toc_ha_reloc, /* special_function */
978 "R_PPC64_TOC16_HA", /* name */
979 FALSE, /* partial_inplace */
981 0xffff, /* dst_mask */
982 FALSE), /* pcrel_offset */
984 /* 64-bit relocation; insert value of TOC base (.TOC.). */
986 /* R_PPC64_TOC 51 doubleword64 .TOC. */
987 HOWTO (R_PPC64_TOC, /* type */
989 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
991 FALSE, /* pc_relative */
993 complain_overflow_bitfield, /* complain_on_overflow */
994 ppc64_elf_toc64_reloc, /* special_function */
995 "R_PPC64_TOC", /* name */
996 FALSE, /* partial_inplace */
998 ONES (64), /* dst_mask */
999 FALSE), /* pcrel_offset */
1001 /* Like R_PPC64_GOT16, but also informs the link editor that the
1002 value to relocate may (!) refer to a PLT entry which the link
1003 editor (a) may replace with the symbol value. If the link editor
1004 is unable to fully resolve the symbol, it may (b) create a PLT
1005 entry and store the address to the new PLT entry in the GOT.
1006 This permits lazy resolution of function symbols at run time.
1007 The link editor may also skip all of this and just (c) emit a
1008 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1009 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16, /* type */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE, /* pc_relative */
1016 complain_overflow_signed, /* complain_on_overflow */
1017 ppc64_elf_unhandled_reloc, /* special_function */
1018 "R_PPC64_PLTGOT16", /* name */
1019 FALSE, /* partial_inplace */
1021 0xffff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1024 /* Like R_PPC64_PLTGOT16, but without overflow. */
1025 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1026 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE, /* pc_relative */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 ppc64_elf_unhandled_reloc, /* special_function */
1034 "R_PPC64_PLTGOT16_LO", /* name */
1035 FALSE, /* partial_inplace */
1037 0xffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1040 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1041 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1042 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1043 16, /* rightshift */
1044 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 FALSE, /* pc_relative */
1048 complain_overflow_dont, /* complain_on_overflow */
1049 ppc64_elf_unhandled_reloc, /* special_function */
1050 "R_PPC64_PLTGOT16_HI", /* name */
1051 FALSE, /* partial_inplace */
1053 0xffff, /* dst_mask */
1054 FALSE), /* pcrel_offset */
1056 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1057 1 if the contents of the low 16 bits, treated as a signed number,
1059 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1060 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1061 16, /* rightshift */
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1064 FALSE, /* pc_relative */
1066 complain_overflow_dont,/* complain_on_overflow */
1067 ppc64_elf_unhandled_reloc, /* special_function */
1068 "R_PPC64_PLTGOT16_HA", /* name */
1069 FALSE, /* partial_inplace */
1071 0xffff, /* dst_mask */
1072 FALSE), /* pcrel_offset */
1074 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1075 HOWTO (R_PPC64_ADDR16_DS, /* type */
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1079 FALSE, /* pc_relative */
1081 complain_overflow_bitfield, /* complain_on_overflow */
1082 bfd_elf_generic_reloc, /* special_function */
1083 "R_PPC64_ADDR16_DS", /* name */
1084 FALSE, /* partial_inplace */
1086 0xfffc, /* dst_mask */
1087 FALSE), /* pcrel_offset */
1089 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1090 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1094 FALSE, /* pc_relative */
1096 complain_overflow_dont,/* complain_on_overflow */
1097 bfd_elf_generic_reloc, /* special_function */
1098 "R_PPC64_ADDR16_LO_DS",/* name */
1099 FALSE, /* partial_inplace */
1101 0xfffc, /* dst_mask */
1102 FALSE), /* pcrel_offset */
1104 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1105 HOWTO (R_PPC64_GOT16_DS, /* type */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1109 FALSE, /* pc_relative */
1111 complain_overflow_signed, /* complain_on_overflow */
1112 ppc64_elf_unhandled_reloc, /* special_function */
1113 "R_PPC64_GOT16_DS", /* name */
1114 FALSE, /* partial_inplace */
1116 0xfffc, /* dst_mask */
1117 FALSE), /* pcrel_offset */
1119 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1120 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1124 FALSE, /* pc_relative */
1126 complain_overflow_dont, /* complain_on_overflow */
1127 ppc64_elf_unhandled_reloc, /* special_function */
1128 "R_PPC64_GOT16_LO_DS", /* name */
1129 FALSE, /* partial_inplace */
1131 0xfffc, /* dst_mask */
1132 FALSE), /* pcrel_offset */
1134 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1135 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1139 FALSE, /* pc_relative */
1141 complain_overflow_dont, /* complain_on_overflow */
1142 ppc64_elf_unhandled_reloc, /* special_function */
1143 "R_PPC64_PLT16_LO_DS", /* name */
1144 FALSE, /* partial_inplace */
1146 0xfffc, /* dst_mask */
1147 FALSE), /* pcrel_offset */
1149 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1150 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 FALSE, /* pc_relative */
1156 complain_overflow_bitfield, /* complain_on_overflow */
1157 ppc64_elf_sectoff_reloc, /* special_function */
1158 "R_PPC64_SECTOFF_DS", /* name */
1159 FALSE, /* partial_inplace */
1161 0xfffc, /* dst_mask */
1162 FALSE), /* pcrel_offset */
1164 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1165 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1169 FALSE, /* pc_relative */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 ppc64_elf_sectoff_reloc, /* special_function */
1173 "R_PPC64_SECTOFF_LO_DS",/* name */
1174 FALSE, /* partial_inplace */
1176 0xfffc, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1179 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1180 HOWTO (R_PPC64_TOC16_DS, /* type */
1182 1, /* size (0 = byte, 1 = short, 2 = long) */
1184 FALSE, /* pc_relative */
1186 complain_overflow_signed, /* complain_on_overflow */
1187 ppc64_elf_toc_reloc, /* special_function */
1188 "R_PPC64_TOC16_DS", /* name */
1189 FALSE, /* partial_inplace */
1191 0xfffc, /* dst_mask */
1192 FALSE), /* pcrel_offset */
1194 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1195 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1199 FALSE, /* pc_relative */
1201 complain_overflow_dont, /* complain_on_overflow */
1202 ppc64_elf_toc_reloc, /* special_function */
1203 "R_PPC64_TOC16_LO_DS", /* name */
1204 FALSE, /* partial_inplace */
1206 0xfffc, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1209 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1210 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1211 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1213 1, /* size (0 = byte, 1 = short, 2 = long) */
1215 FALSE, /* pc_relative */
1217 complain_overflow_signed, /* complain_on_overflow */
1218 ppc64_elf_unhandled_reloc, /* special_function */
1219 "R_PPC64_PLTGOT16_DS", /* name */
1220 FALSE, /* partial_inplace */
1222 0xfffc, /* dst_mask */
1223 FALSE), /* pcrel_offset */
1225 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1226 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1227 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE, /* pc_relative */
1233 complain_overflow_dont, /* complain_on_overflow */
1234 ppc64_elf_unhandled_reloc, /* special_function */
1235 "R_PPC64_PLTGOT16_LO_DS",/* name */
1236 FALSE, /* partial_inplace */
1238 0xfffc, /* dst_mask */
1239 FALSE), /* pcrel_offset */
1241 /* Marker relocs for TLS. */
1244 2, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE, /* pc_relative */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 bfd_elf_generic_reloc, /* special_function */
1250 "R_PPC64_TLS", /* name */
1251 FALSE, /* partial_inplace */
1254 FALSE), /* pcrel_offset */
1256 HOWTO (R_PPC64_TLSGD,
1258 2, /* size (0 = byte, 1 = short, 2 = long) */
1260 FALSE, /* pc_relative */
1262 complain_overflow_dont, /* complain_on_overflow */
1263 bfd_elf_generic_reloc, /* special_function */
1264 "R_PPC64_TLSGD", /* name */
1265 FALSE, /* partial_inplace */
1268 FALSE), /* pcrel_offset */
1270 HOWTO (R_PPC64_TLSLD,
1272 2, /* size (0 = byte, 1 = short, 2 = long) */
1274 FALSE, /* pc_relative */
1276 complain_overflow_dont, /* complain_on_overflow */
1277 bfd_elf_generic_reloc, /* special_function */
1278 "R_PPC64_TLSLD", /* name */
1279 FALSE, /* partial_inplace */
1282 FALSE), /* pcrel_offset */
1284 /* Computes the load module index of the load module that contains the
1285 definition of its TLS sym. */
1286 HOWTO (R_PPC64_DTPMOD64,
1288 4, /* size (0 = byte, 1 = short, 2 = long) */
1290 FALSE, /* pc_relative */
1292 complain_overflow_dont, /* complain_on_overflow */
1293 ppc64_elf_unhandled_reloc, /* special_function */
1294 "R_PPC64_DTPMOD64", /* name */
1295 FALSE, /* partial_inplace */
1297 ONES (64), /* dst_mask */
1298 FALSE), /* pcrel_offset */
1300 /* Computes a dtv-relative displacement, the difference between the value
1301 of sym+add and the base address of the thread-local storage block that
1302 contains the definition of sym, minus 0x8000. */
1303 HOWTO (R_PPC64_DTPREL64,
1305 4, /* size (0 = byte, 1 = short, 2 = long) */
1307 FALSE, /* pc_relative */
1309 complain_overflow_dont, /* complain_on_overflow */
1310 ppc64_elf_unhandled_reloc, /* special_function */
1311 "R_PPC64_DTPREL64", /* name */
1312 FALSE, /* partial_inplace */
1314 ONES (64), /* dst_mask */
1315 FALSE), /* pcrel_offset */
1317 /* A 16 bit dtprel reloc. */
1318 HOWTO (R_PPC64_DTPREL16,
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1322 FALSE, /* pc_relative */
1324 complain_overflow_signed, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc, /* special_function */
1326 "R_PPC64_DTPREL16", /* name */
1327 FALSE, /* partial_inplace */
1329 0xffff, /* dst_mask */
1330 FALSE), /* pcrel_offset */
1332 /* Like DTPREL16, but no overflow. */
1333 HOWTO (R_PPC64_DTPREL16_LO,
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 FALSE, /* pc_relative */
1339 complain_overflow_dont, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc, /* special_function */
1341 "R_PPC64_DTPREL16_LO", /* name */
1342 FALSE, /* partial_inplace */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1347 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HI,
1349 16, /* rightshift */
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 FALSE, /* pc_relative */
1354 complain_overflow_dont, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc, /* special_function */
1356 "R_PPC64_DTPREL16_HI", /* name */
1357 FALSE, /* partial_inplace */
1359 0xffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1362 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HA,
1364 16, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1367 FALSE, /* pc_relative */
1369 complain_overflow_dont, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc, /* special_function */
1371 "R_PPC64_DTPREL16_HA", /* name */
1372 FALSE, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1377 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HIGHER,
1379 32, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 FALSE, /* pc_relative */
1384 complain_overflow_dont, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc, /* special_function */
1386 "R_PPC64_DTPREL16_HIGHER", /* name */
1387 FALSE, /* partial_inplace */
1389 0xffff, /* dst_mask */
1390 FALSE), /* pcrel_offset */
1392 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1393 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1394 32, /* rightshift */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE, /* pc_relative */
1399 complain_overflow_dont, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc, /* special_function */
1401 "R_PPC64_DTPREL16_HIGHERA", /* name */
1402 FALSE, /* partial_inplace */
1404 0xffff, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1407 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1408 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1409 48, /* rightshift */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 FALSE, /* pc_relative */
1414 complain_overflow_dont, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc, /* special_function */
1416 "R_PPC64_DTPREL16_HIGHEST", /* name */
1417 FALSE, /* partial_inplace */
1419 0xffff, /* dst_mask */
1420 FALSE), /* pcrel_offset */
1422 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1423 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1424 48, /* rightshift */
1425 1, /* size (0 = byte, 1 = short, 2 = long) */
1427 FALSE, /* pc_relative */
1429 complain_overflow_dont, /* complain_on_overflow */
1430 ppc64_elf_unhandled_reloc, /* special_function */
1431 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1432 FALSE, /* partial_inplace */
1434 0xffff, /* dst_mask */
1435 FALSE), /* pcrel_offset */
1437 /* Like DTPREL16, but for insns with a DS field. */
1438 HOWTO (R_PPC64_DTPREL16_DS,
1440 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 FALSE, /* pc_relative */
1444 complain_overflow_signed, /* complain_on_overflow */
1445 ppc64_elf_unhandled_reloc, /* special_function */
1446 "R_PPC64_DTPREL16_DS", /* name */
1447 FALSE, /* partial_inplace */
1449 0xfffc, /* dst_mask */
1450 FALSE), /* pcrel_offset */
1452 /* Like DTPREL16_DS, but no overflow. */
1453 HOWTO (R_PPC64_DTPREL16_LO_DS,
1455 1, /* size (0 = byte, 1 = short, 2 = long) */
1457 FALSE, /* pc_relative */
1459 complain_overflow_dont, /* complain_on_overflow */
1460 ppc64_elf_unhandled_reloc, /* special_function */
1461 "R_PPC64_DTPREL16_LO_DS", /* name */
1462 FALSE, /* partial_inplace */
1464 0xfffc, /* dst_mask */
1465 FALSE), /* pcrel_offset */
1467 /* Computes a tp-relative displacement, the difference between the value of
1468 sym+add and the value of the thread pointer (r13). */
1469 HOWTO (R_PPC64_TPREL64,
1471 4, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE, /* pc_relative */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc, /* special_function */
1477 "R_PPC64_TPREL64", /* name */
1478 FALSE, /* partial_inplace */
1480 ONES (64), /* dst_mask */
1481 FALSE), /* pcrel_offset */
1483 /* A 16 bit tprel reloc. */
1484 HOWTO (R_PPC64_TPREL16,
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE, /* pc_relative */
1490 complain_overflow_signed, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc, /* special_function */
1492 "R_PPC64_TPREL16", /* name */
1493 FALSE, /* partial_inplace */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1498 /* Like TPREL16, but no overflow. */
1499 HOWTO (R_PPC64_TPREL16_LO,
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE, /* pc_relative */
1505 complain_overflow_dont, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc, /* special_function */
1507 "R_PPC64_TPREL16_LO", /* name */
1508 FALSE, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1513 /* Like TPREL16_LO, but next higher group of 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HI,
1515 16, /* rightshift */
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE, /* pc_relative */
1520 complain_overflow_dont, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc, /* special_function */
1522 "R_PPC64_TPREL16_HI", /* name */
1523 FALSE, /* partial_inplace */
1525 0xffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1528 /* Like TPREL16_HI, but adjust for low 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HA,
1530 16, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1533 FALSE, /* pc_relative */
1535 complain_overflow_dont, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc, /* special_function */
1537 "R_PPC64_TPREL16_HA", /* name */
1538 FALSE, /* partial_inplace */
1540 0xffff, /* dst_mask */
1541 FALSE), /* pcrel_offset */
1543 /* Like TPREL16_HI, but next higher group of 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HIGHER,
1545 32, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1548 FALSE, /* pc_relative */
1550 complain_overflow_dont, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc, /* special_function */
1552 "R_PPC64_TPREL16_HIGHER", /* name */
1553 FALSE, /* partial_inplace */
1555 0xffff, /* dst_mask */
1556 FALSE), /* pcrel_offset */
1558 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1559 HOWTO (R_PPC64_TPREL16_HIGHERA,
1560 32, /* rightshift */
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE, /* pc_relative */
1565 complain_overflow_dont, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc, /* special_function */
1567 "R_PPC64_TPREL16_HIGHERA", /* name */
1568 FALSE, /* partial_inplace */
1570 0xffff, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1573 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1574 HOWTO (R_PPC64_TPREL16_HIGHEST,
1575 48, /* rightshift */
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE, /* pc_relative */
1580 complain_overflow_dont, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc, /* special_function */
1582 "R_PPC64_TPREL16_HIGHEST", /* name */
1583 FALSE, /* partial_inplace */
1585 0xffff, /* dst_mask */
1586 FALSE), /* pcrel_offset */
1588 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1589 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1590 48, /* rightshift */
1591 1, /* size (0 = byte, 1 = short, 2 = long) */
1593 FALSE, /* pc_relative */
1595 complain_overflow_dont, /* complain_on_overflow */
1596 ppc64_elf_unhandled_reloc, /* special_function */
1597 "R_PPC64_TPREL16_HIGHESTA", /* name */
1598 FALSE, /* partial_inplace */
1600 0xffff, /* dst_mask */
1601 FALSE), /* pcrel_offset */
1603 /* Like TPREL16, but for insns with a DS field. */
1604 HOWTO (R_PPC64_TPREL16_DS,
1606 1, /* size (0 = byte, 1 = short, 2 = long) */
1608 FALSE, /* pc_relative */
1610 complain_overflow_signed, /* complain_on_overflow */
1611 ppc64_elf_unhandled_reloc, /* special_function */
1612 "R_PPC64_TPREL16_DS", /* name */
1613 FALSE, /* partial_inplace */
1615 0xfffc, /* dst_mask */
1616 FALSE), /* pcrel_offset */
1618 /* Like TPREL16_DS, but no overflow. */
1619 HOWTO (R_PPC64_TPREL16_LO_DS,
1621 1, /* size (0 = byte, 1 = short, 2 = long) */
1623 FALSE, /* pc_relative */
1625 complain_overflow_dont, /* complain_on_overflow */
1626 ppc64_elf_unhandled_reloc, /* special_function */
1627 "R_PPC64_TPREL16_LO_DS", /* name */
1628 FALSE, /* partial_inplace */
1630 0xfffc, /* dst_mask */
1631 FALSE), /* pcrel_offset */
1633 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1634 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1635 to the first entry relative to the TOC base (r2). */
1636 HOWTO (R_PPC64_GOT_TLSGD16,
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1640 FALSE, /* pc_relative */
1642 complain_overflow_signed, /* complain_on_overflow */
1643 ppc64_elf_unhandled_reloc, /* special_function */
1644 "R_PPC64_GOT_TLSGD16", /* name */
1645 FALSE, /* partial_inplace */
1647 0xffff, /* dst_mask */
1648 FALSE), /* pcrel_offset */
1650 /* Like GOT_TLSGD16, but no overflow. */
1651 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1653 1, /* size (0 = byte, 1 = short, 2 = long) */
1655 FALSE, /* pc_relative */
1657 complain_overflow_dont, /* complain_on_overflow */
1658 ppc64_elf_unhandled_reloc, /* special_function */
1659 "R_PPC64_GOT_TLSGD16_LO", /* name */
1660 FALSE, /* partial_inplace */
1662 0xffff, /* dst_mask */
1663 FALSE), /* pcrel_offset */
1665 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1666 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1667 16, /* rightshift */
1668 1, /* size (0 = byte, 1 = short, 2 = long) */
1670 FALSE, /* pc_relative */
1672 complain_overflow_dont, /* complain_on_overflow */
1673 ppc64_elf_unhandled_reloc, /* special_function */
1674 "R_PPC64_GOT_TLSGD16_HI", /* name */
1675 FALSE, /* partial_inplace */
1677 0xffff, /* dst_mask */
1678 FALSE), /* pcrel_offset */
1680 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1681 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1682 16, /* rightshift */
1683 1, /* size (0 = byte, 1 = short, 2 = long) */
1685 FALSE, /* pc_relative */
1687 complain_overflow_dont, /* complain_on_overflow */
1688 ppc64_elf_unhandled_reloc, /* special_function */
1689 "R_PPC64_GOT_TLSGD16_HA", /* name */
1690 FALSE, /* partial_inplace */
1692 0xffff, /* dst_mask */
1693 FALSE), /* pcrel_offset */
1695 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1696 with values (sym+add)@dtpmod and zero, and computes the offset to the
1697 first entry relative to the TOC base (r2). */
1698 HOWTO (R_PPC64_GOT_TLSLD16,
1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1702 FALSE, /* pc_relative */
1704 complain_overflow_signed, /* complain_on_overflow */
1705 ppc64_elf_unhandled_reloc, /* special_function */
1706 "R_PPC64_GOT_TLSLD16", /* name */
1707 FALSE, /* partial_inplace */
1709 0xffff, /* dst_mask */
1710 FALSE), /* pcrel_offset */
1712 /* Like GOT_TLSLD16, but no overflow. */
1713 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1715 1, /* size (0 = byte, 1 = short, 2 = long) */
1717 FALSE, /* pc_relative */
1719 complain_overflow_dont, /* complain_on_overflow */
1720 ppc64_elf_unhandled_reloc, /* special_function */
1721 "R_PPC64_GOT_TLSLD16_LO", /* name */
1722 FALSE, /* partial_inplace */
1724 0xffff, /* dst_mask */
1725 FALSE), /* pcrel_offset */
1727 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1728 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1729 16, /* rightshift */
1730 1, /* size (0 = byte, 1 = short, 2 = long) */
1732 FALSE, /* pc_relative */
1734 complain_overflow_dont, /* complain_on_overflow */
1735 ppc64_elf_unhandled_reloc, /* special_function */
1736 "R_PPC64_GOT_TLSLD16_HI", /* name */
1737 FALSE, /* partial_inplace */
1739 0xffff, /* dst_mask */
1740 FALSE), /* pcrel_offset */
1742 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1743 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1744 16, /* rightshift */
1745 1, /* size (0 = byte, 1 = short, 2 = long) */
1747 FALSE, /* pc_relative */
1749 complain_overflow_dont, /* complain_on_overflow */
1750 ppc64_elf_unhandled_reloc, /* special_function */
1751 "R_PPC64_GOT_TLSLD16_HA", /* name */
1752 FALSE, /* partial_inplace */
1754 0xffff, /* dst_mask */
1755 FALSE), /* pcrel_offset */
1757 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1758 the offset to the entry relative to the TOC base (r2). */
1759 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 FALSE, /* pc_relative */
1765 complain_overflow_signed, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc, /* special_function */
1767 "R_PPC64_GOT_DTPREL16_DS", /* name */
1768 FALSE, /* partial_inplace */
1770 0xfffc, /* dst_mask */
1771 FALSE), /* pcrel_offset */
1773 /* Like GOT_DTPREL16_DS, but no overflow. */
1774 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1776 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 FALSE, /* pc_relative */
1780 complain_overflow_dont, /* complain_on_overflow */
1781 ppc64_elf_unhandled_reloc, /* special_function */
1782 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1783 FALSE, /* partial_inplace */
1785 0xfffc, /* dst_mask */
1786 FALSE), /* pcrel_offset */
1788 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1789 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1790 16, /* rightshift */
1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 FALSE, /* pc_relative */
1795 complain_overflow_dont, /* complain_on_overflow */
1796 ppc64_elf_unhandled_reloc, /* special_function */
1797 "R_PPC64_GOT_DTPREL16_HI", /* name */
1798 FALSE, /* partial_inplace */
1800 0xffff, /* dst_mask */
1801 FALSE), /* pcrel_offset */
1803 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1804 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1805 16, /* rightshift */
1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 FALSE, /* pc_relative */
1810 complain_overflow_dont, /* complain_on_overflow */
1811 ppc64_elf_unhandled_reloc, /* special_function */
1812 "R_PPC64_GOT_DTPREL16_HA", /* name */
1813 FALSE, /* partial_inplace */
1815 0xffff, /* dst_mask */
1816 FALSE), /* pcrel_offset */
1818 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1819 offset to the entry relative to the TOC base (r2). */
1820 HOWTO (R_PPC64_GOT_TPREL16_DS,
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 FALSE, /* pc_relative */
1826 complain_overflow_signed, /* complain_on_overflow */
1827 ppc64_elf_unhandled_reloc, /* special_function */
1828 "R_PPC64_GOT_TPREL16_DS", /* name */
1829 FALSE, /* partial_inplace */
1831 0xfffc, /* dst_mask */
1832 FALSE), /* pcrel_offset */
1834 /* Like GOT_TPREL16_DS, but no overflow. */
1835 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1837 1, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE, /* pc_relative */
1841 complain_overflow_dont, /* complain_on_overflow */
1842 ppc64_elf_unhandled_reloc, /* special_function */
1843 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1844 FALSE, /* partial_inplace */
1846 0xfffc, /* dst_mask */
1847 FALSE), /* pcrel_offset */
1849 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1850 HOWTO (R_PPC64_GOT_TPREL16_HI,
1851 16, /* rightshift */
1852 1, /* size (0 = byte, 1 = short, 2 = long) */
1854 FALSE, /* pc_relative */
1856 complain_overflow_dont, /* complain_on_overflow */
1857 ppc64_elf_unhandled_reloc, /* special_function */
1858 "R_PPC64_GOT_TPREL16_HI", /* name */
1859 FALSE, /* partial_inplace */
1861 0xffff, /* dst_mask */
1862 FALSE), /* pcrel_offset */
1864 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1865 HOWTO (R_PPC64_GOT_TPREL16_HA,
1866 16, /* rightshift */
1867 1, /* size (0 = byte, 1 = short, 2 = long) */
1869 FALSE, /* pc_relative */
1871 complain_overflow_dont, /* complain_on_overflow */
1872 ppc64_elf_unhandled_reloc, /* special_function */
1873 "R_PPC64_GOT_TPREL16_HA", /* name */
1874 FALSE, /* partial_inplace */
1876 0xffff, /* dst_mask */
1877 FALSE), /* pcrel_offset */
1879 HOWTO (R_PPC64_JMP_IREL, /* type */
1881 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1883 FALSE, /* pc_relative */
1885 complain_overflow_dont, /* complain_on_overflow */
1886 ppc64_elf_unhandled_reloc, /* special_function */
1887 "R_PPC64_JMP_IREL", /* name */
1888 FALSE, /* partial_inplace */
1891 FALSE), /* pcrel_offset */
1893 HOWTO (R_PPC64_IRELATIVE, /* type */
1895 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1897 FALSE, /* pc_relative */
1899 complain_overflow_dont, /* complain_on_overflow */
1900 bfd_elf_generic_reloc, /* special_function */
1901 "R_PPC64_IRELATIVE", /* name */
1902 FALSE, /* partial_inplace */
1904 ONES (64), /* dst_mask */
1905 FALSE), /* pcrel_offset */
1907 /* A 16 bit relative relocation. */
1908 HOWTO (R_PPC64_REL16, /* type */
1910 1, /* size (0 = byte, 1 = short, 2 = long) */
1912 TRUE, /* pc_relative */
1914 complain_overflow_bitfield, /* complain_on_overflow */
1915 bfd_elf_generic_reloc, /* special_function */
1916 "R_PPC64_REL16", /* name */
1917 FALSE, /* partial_inplace */
1919 0xffff, /* dst_mask */
1920 TRUE), /* pcrel_offset */
1922 /* A 16 bit relative relocation without overflow. */
1923 HOWTO (R_PPC64_REL16_LO, /* type */
1925 1, /* size (0 = byte, 1 = short, 2 = long) */
1927 TRUE, /* pc_relative */
1929 complain_overflow_dont,/* complain_on_overflow */
1930 bfd_elf_generic_reloc, /* special_function */
1931 "R_PPC64_REL16_LO", /* name */
1932 FALSE, /* partial_inplace */
1934 0xffff, /* dst_mask */
1935 TRUE), /* pcrel_offset */
1937 /* The high order 16 bits of a relative address. */
1938 HOWTO (R_PPC64_REL16_HI, /* type */
1939 16, /* rightshift */
1940 1, /* size (0 = byte, 1 = short, 2 = long) */
1942 TRUE, /* pc_relative */
1944 complain_overflow_dont, /* complain_on_overflow */
1945 bfd_elf_generic_reloc, /* special_function */
1946 "R_PPC64_REL16_HI", /* name */
1947 FALSE, /* partial_inplace */
1949 0xffff, /* dst_mask */
1950 TRUE), /* pcrel_offset */
1952 /* The high order 16 bits of a relative address, plus 1 if the contents of
1953 the low 16 bits, treated as a signed number, is negative. */
1954 HOWTO (R_PPC64_REL16_HA, /* type */
1955 16, /* rightshift */
1956 1, /* size (0 = byte, 1 = short, 2 = long) */
1958 TRUE, /* pc_relative */
1960 complain_overflow_dont, /* complain_on_overflow */
1961 ppc64_elf_ha_reloc, /* special_function */
1962 "R_PPC64_REL16_HA", /* name */
1963 FALSE, /* partial_inplace */
1965 0xffff, /* dst_mask */
1966 TRUE), /* pcrel_offset */
1968 /* GNU extension to record C++ vtable hierarchy. */
1969 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1971 0, /* size (0 = byte, 1 = short, 2 = long) */
1973 FALSE, /* pc_relative */
1975 complain_overflow_dont, /* complain_on_overflow */
1976 NULL, /* special_function */
1977 "R_PPC64_GNU_VTINHERIT", /* name */
1978 FALSE, /* partial_inplace */
1981 FALSE), /* pcrel_offset */
1983 /* GNU extension to record C++ vtable member usage. */
1984 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1986 0, /* size (0 = byte, 1 = short, 2 = long) */
1988 FALSE, /* pc_relative */
1990 complain_overflow_dont, /* complain_on_overflow */
1991 NULL, /* special_function */
1992 "R_PPC64_GNU_VTENTRY", /* name */
1993 FALSE, /* partial_inplace */
1996 FALSE), /* pcrel_offset */
2000 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2004 ppc_howto_init (void)
2006 unsigned int i, type;
2009 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2012 type = ppc64_elf_howto_raw[i].type;
2013 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2014 / sizeof (ppc64_elf_howto_table[0])));
2015 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2019 static reloc_howto_type *
2020 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2021 bfd_reloc_code_real_type code)
2023 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2025 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2026 /* Initialize howto table if needed. */
2034 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2036 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2038 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2040 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2042 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2044 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2046 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2048 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2050 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2052 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2054 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2056 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2058 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2060 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2062 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2064 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2066 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2068 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2070 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2072 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2074 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2076 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2078 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2080 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2082 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2084 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2086 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2088 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2090 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2092 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2094 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2096 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2098 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2100 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2102 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2104 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2106 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2108 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2110 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2112 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2114 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2116 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2118 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2120 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2122 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2124 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2126 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2128 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2130 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2132 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2134 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2136 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2138 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2140 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2142 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2144 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2146 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2148 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2150 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2152 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2154 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2156 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2158 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2160 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2162 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2164 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2166 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2168 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2170 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2172 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2174 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2176 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2178 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2180 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2182 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2184 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2186 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2188 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2190 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2192 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2194 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2196 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2198 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2200 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2202 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2204 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2206 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2208 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2210 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2212 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2214 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2216 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2218 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2220 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2222 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2224 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2226 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2228 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2230 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2232 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2234 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2236 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2238 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2240 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2242 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2244 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2246 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2250 return ppc64_elf_howto_table[r];
2253 static reloc_howto_type *
2254 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2260 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2262 if (ppc64_elf_howto_raw[i].name != NULL
2263 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2264 return &ppc64_elf_howto_raw[i];
2269 /* Set the howto pointer for a PowerPC ELF reloc. */
2272 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2273 Elf_Internal_Rela *dst)
2277 /* Initialize howto table if needed. */
2278 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2281 type = ELF64_R_TYPE (dst->r_info);
2282 if (type >= (sizeof (ppc64_elf_howto_table)
2283 / sizeof (ppc64_elf_howto_table[0])))
2285 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2287 type = R_PPC64_NONE;
2289 cache_ptr->howto = ppc64_elf_howto_table[type];
2292 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2294 static bfd_reloc_status_type
2295 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2296 void *data, asection *input_section,
2297 bfd *output_bfd, char **error_message)
2299 /* If this is a relocatable link (output_bfd test tells us), just
2300 call the generic function. Any adjustment will be done at final
2302 if (output_bfd != NULL)
2303 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2304 input_section, output_bfd, error_message);
2306 /* Adjust the addend for sign extension of the low 16 bits.
2307 We won't actually be using the low 16 bits, so trashing them
2309 reloc_entry->addend += 0x8000;
2310 return bfd_reloc_continue;
2313 static bfd_reloc_status_type
2314 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2315 void *data, asection *input_section,
2316 bfd *output_bfd, char **error_message)
2318 if (output_bfd != NULL)
2319 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2320 input_section, output_bfd, error_message);
2322 if (strcmp (symbol->section->name, ".opd") == 0
2323 && (symbol->section->owner->flags & DYNAMIC) == 0)
2325 bfd_vma dest = opd_entry_value (symbol->section,
2326 symbol->value + reloc_entry->addend,
2328 if (dest != (bfd_vma) -1)
2329 reloc_entry->addend = dest - (symbol->value
2330 + symbol->section->output_section->vma
2331 + symbol->section->output_offset);
2333 return bfd_reloc_continue;
2336 static bfd_reloc_status_type
2337 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2338 void *data, asection *input_section,
2339 bfd *output_bfd, char **error_message)
2342 enum elf_ppc64_reloc_type r_type;
2343 bfd_size_type octets;
2344 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2345 bfd_boolean is_power4 = FALSE;
2347 /* If this is a relocatable link (output_bfd test tells us), just
2348 call the generic function. Any adjustment will be done at final
2350 if (output_bfd != NULL)
2351 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2352 input_section, output_bfd, error_message);
2354 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2355 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2356 insn &= ~(0x01 << 21);
2357 r_type = reloc_entry->howto->type;
2358 if (r_type == R_PPC64_ADDR14_BRTAKEN
2359 || r_type == R_PPC64_REL14_BRTAKEN)
2360 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2364 /* Set 'a' bit. This is 0b00010 in BO field for branch
2365 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2366 for branch on CTR insns (BO == 1a00t or 1a01t). */
2367 if ((insn & (0x14 << 21)) == (0x04 << 21))
2369 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2379 if (!bfd_is_com_section (symbol->section))
2380 target = symbol->value;
2381 target += symbol->section->output_section->vma;
2382 target += symbol->section->output_offset;
2383 target += reloc_entry->addend;
2385 from = (reloc_entry->address
2386 + input_section->output_offset
2387 + input_section->output_section->vma);
2389 /* Invert 'y' bit if not the default. */
2390 if ((bfd_signed_vma) (target - from) < 0)
2393 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2395 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2396 input_section, output_bfd, error_message);
2399 static bfd_reloc_status_type
2400 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2401 void *data, asection *input_section,
2402 bfd *output_bfd, char **error_message)
2404 /* If this is a relocatable link (output_bfd test tells us), just
2405 call the generic function. Any adjustment will be done at final
2407 if (output_bfd != NULL)
2408 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2409 input_section, output_bfd, error_message);
2411 /* Subtract the symbol section base address. */
2412 reloc_entry->addend -= symbol->section->output_section->vma;
2413 return bfd_reloc_continue;
2416 static bfd_reloc_status_type
2417 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2418 void *data, asection *input_section,
2419 bfd *output_bfd, char **error_message)
2421 /* If this is a relocatable link (output_bfd test tells us), just
2422 call the generic function. Any adjustment will be done at final
2424 if (output_bfd != NULL)
2425 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2426 input_section, output_bfd, error_message);
2428 /* Subtract the symbol section base address. */
2429 reloc_entry->addend -= symbol->section->output_section->vma;
2431 /* Adjust the addend for sign extension of the low 16 bits. */
2432 reloc_entry->addend += 0x8000;
2433 return bfd_reloc_continue;
2436 static bfd_reloc_status_type
2437 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2438 void *data, asection *input_section,
2439 bfd *output_bfd, char **error_message)
2443 /* If this is a relocatable link (output_bfd test tells us), just
2444 call the generic function. Any adjustment will be done at final
2446 if (output_bfd != NULL)
2447 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2448 input_section, output_bfd, error_message);
2450 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2452 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2454 /* Subtract the TOC base address. */
2455 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2456 return bfd_reloc_continue;
2459 static bfd_reloc_status_type
2460 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2461 void *data, asection *input_section,
2462 bfd *output_bfd, char **error_message)
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2469 if (output_bfd != NULL)
2470 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2471 input_section, output_bfd, error_message);
2473 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2475 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2477 /* Subtract the TOC base address. */
2478 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2480 /* Adjust the addend for sign extension of the low 16 bits. */
2481 reloc_entry->addend += 0x8000;
2482 return bfd_reloc_continue;
2485 static bfd_reloc_status_type
2486 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2487 void *data, asection *input_section,
2488 bfd *output_bfd, char **error_message)
2491 bfd_size_type octets;
2493 /* If this is a relocatable link (output_bfd test tells us), just
2494 call the generic function. Any adjustment will be done at final
2496 if (output_bfd != NULL)
2497 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2498 input_section, output_bfd, error_message);
2500 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2502 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2504 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2505 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2506 return bfd_reloc_ok;
2509 static bfd_reloc_status_type
2510 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2511 void *data, asection *input_section,
2512 bfd *output_bfd, char **error_message)
2514 /* If this is a relocatable link (output_bfd test tells us), just
2515 call the generic function. Any adjustment will be done at final
2517 if (output_bfd != NULL)
2518 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2519 input_section, output_bfd, error_message);
2521 if (error_message != NULL)
2523 static char buf[60];
2524 sprintf (buf, "generic linker can't handle %s",
2525 reloc_entry->howto->name);
2526 *error_message = buf;
2528 return bfd_reloc_dangerous;
2531 /* Track GOT entries needed for a given symbol. We might need more
2532 than one got entry per symbol. */
2535 struct got_entry *next;
2537 /* The symbol addend that we'll be placing in the GOT. */
2540 /* Unlike other ELF targets, we use separate GOT entries for the same
2541 symbol referenced from different input files. This is to support
2542 automatic multiple TOC/GOT sections, where the TOC base can vary
2543 from one input file to another. After partitioning into TOC groups
2544 we merge entries within the group.
2546 Point to the BFD owning this GOT entry. */
2549 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2550 TLS_TPREL or TLS_DTPREL for tls entries. */
2551 unsigned char tls_type;
2553 /* Non-zero if got.ent points to real entry. */
2554 unsigned char is_indirect;
2556 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2559 bfd_signed_vma refcount;
2561 struct got_entry *ent;
2565 /* The same for PLT. */
2568 struct plt_entry *next;
2574 bfd_signed_vma refcount;
2579 struct ppc64_elf_obj_tdata
2581 struct elf_obj_tdata elf;
2583 /* Shortcuts to dynamic linker sections. */
2587 /* Used during garbage collection. We attach global symbols defined
2588 on removed .opd entries to this section so that the sym is removed. */
2589 asection *deleted_section;
2591 /* TLS local dynamic got entry handling. Support for multiple GOT
2592 sections means we potentially need one of these for each input bfd. */
2593 struct got_entry tlsld_got;
2595 /* A copy of relocs before they are modified for --emit-relocs. */
2596 Elf_Internal_Rela *opd_relocs;
2598 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2599 the reloc to be in the range -32768 to 32767. */
2600 unsigned int has_small_toc_reloc;
2603 #define ppc64_elf_tdata(bfd) \
2604 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2606 #define ppc64_tlsld_got(bfd) \
2607 (&ppc64_elf_tdata (bfd)->tlsld_got)
2609 #define is_ppc64_elf(bfd) \
2610 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2611 && elf_object_id (bfd) == PPC64_ELF_DATA)
2613 /* Override the generic function because we store some extras. */
2616 ppc64_elf_mkobject (bfd *abfd)
2618 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2622 /* Fix bad default arch selected for a 64 bit input bfd when the
2623 default is 32 bit. */
2626 ppc64_elf_object_p (bfd *abfd)
2628 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2630 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2632 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2634 /* Relies on arch after 32 bit default being 64 bit default. */
2635 abfd->arch_info = abfd->arch_info->next;
2636 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2642 /* Support for core dump NOTE sections. */
2645 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2647 size_t offset, size;
2649 if (note->descsz != 504)
2653 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2656 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 32);
2662 /* Make a ".reg/999" section. */
2663 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2664 size, note->descpos + offset);
2668 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2670 if (note->descsz != 136)
2673 elf_tdata (abfd)->core_program
2674 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2675 elf_tdata (abfd)->core_command
2676 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2682 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2695 va_start (ap, note_type);
2696 memset (data, 0, 40);
2697 strncpy (data + 40, va_arg (ap, const char *), 16);
2698 strncpy (data + 56, va_arg (ap, const char *), 80);
2700 return elfcore_write_note (abfd, buf, bufsiz,
2701 "CORE", note_type, data, sizeof (data));
2712 va_start (ap, note_type);
2713 memset (data, 0, 112);
2714 pid = va_arg (ap, long);
2715 bfd_put_32 (abfd, pid, data + 32);
2716 cursig = va_arg (ap, int);
2717 bfd_put_16 (abfd, cursig, data + 12);
2718 greg = va_arg (ap, const void *);
2719 memcpy (data + 112, greg, 384);
2720 memset (data + 496, 0, 8);
2722 return elfcore_write_note (abfd, buf, bufsiz,
2723 "CORE", note_type, data, sizeof (data));
2728 /* Merge backend specific data from an object file to the output
2729 object file when linking. */
2732 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2734 /* Check if we have the same endianess. */
2735 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2736 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2737 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2741 if (bfd_big_endian (ibfd))
2742 msg = _("%B: compiled for a big endian system "
2743 "and target is little endian");
2745 msg = _("%B: compiled for a little endian system "
2746 "and target is big endian");
2748 (*_bfd_error_handler) (msg, ibfd);
2750 bfd_set_error (bfd_error_wrong_format);
2757 /* Add extra PPC sections. */
2759 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2761 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2762 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2763 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2764 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2765 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2766 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2767 { NULL, 0, 0, 0, 0 }
2770 enum _ppc64_sec_type {
2776 struct _ppc64_elf_section_data
2778 struct bfd_elf_section_data elf;
2782 /* An array with one entry for each opd function descriptor. */
2783 struct _opd_sec_data
2785 /* Points to the function code section for local opd entries. */
2786 asection **func_sec;
2788 /* After editing .opd, adjust references to opd local syms. */
2792 /* An array for toc sections, indexed by offset/8. */
2793 struct _toc_sec_data
2795 /* Specifies the relocation symbol index used at a given toc offset. */
2798 /* And the relocation addend. */
2803 enum _ppc64_sec_type sec_type:2;
2805 /* Flag set when small branches are detected. Used to
2806 select suitable defaults for the stub group size. */
2807 unsigned int has_14bit_branch:1;
2810 #define ppc64_elf_section_data(sec) \
2811 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2814 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2816 if (!sec->used_by_bfd)
2818 struct _ppc64_elf_section_data *sdata;
2819 bfd_size_type amt = sizeof (*sdata);
2821 sdata = bfd_zalloc (abfd, amt);
2824 sec->used_by_bfd = sdata;
2827 return _bfd_elf_new_section_hook (abfd, sec);
2830 static struct _opd_sec_data *
2831 get_opd_info (asection * sec)
2834 && ppc64_elf_section_data (sec) != NULL
2835 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2836 return &ppc64_elf_section_data (sec)->u.opd;
2840 /* Parameters for the qsort hook. */
2841 static bfd_boolean synthetic_relocatable;
2843 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2846 compare_symbols (const void *ap, const void *bp)
2848 const asymbol *a = * (const asymbol **) ap;
2849 const asymbol *b = * (const asymbol **) bp;
2851 /* Section symbols first. */
2852 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2854 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2857 /* then .opd symbols. */
2858 if (strcmp (a->section->name, ".opd") == 0
2859 && strcmp (b->section->name, ".opd") != 0)
2861 if (strcmp (a->section->name, ".opd") != 0
2862 && strcmp (b->section->name, ".opd") == 0)
2865 /* then other code symbols. */
2866 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 == (SEC_CODE | SEC_ALLOC)
2868 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 != (SEC_CODE | SEC_ALLOC))
2872 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2873 != (SEC_CODE | SEC_ALLOC)
2874 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2875 == (SEC_CODE | SEC_ALLOC))
2878 if (synthetic_relocatable)
2880 if (a->section->id < b->section->id)
2883 if (a->section->id > b->section->id)
2887 if (a->value + a->section->vma < b->value + b->section->vma)
2890 if (a->value + a->section->vma > b->value + b->section->vma)
2893 /* For syms with the same value, prefer strong dynamic global function
2894 syms over other syms. */
2895 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2898 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2901 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2904 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2907 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2910 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2913 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2916 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2922 /* Search SYMS for a symbol of the given VALUE. */
2925 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2933 mid = (lo + hi) >> 1;
2934 if (syms[mid]->value + syms[mid]->section->vma < value)
2936 else if (syms[mid]->value + syms[mid]->section->vma > value)
2946 mid = (lo + hi) >> 1;
2947 if (syms[mid]->section->id < id)
2949 else if (syms[mid]->section->id > id)
2951 else if (syms[mid]->value < value)
2953 else if (syms[mid]->value > value)
2963 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2965 bfd_vma vma = *(bfd_vma *) ptr;
2966 return ((section->flags & SEC_ALLOC) != 0
2967 && section->vma <= vma
2968 && vma < section->vma + section->size);
2971 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2972 entry syms. Also generate @plt symbols for the glink branch table. */
2975 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2976 long static_count, asymbol **static_syms,
2977 long dyn_count, asymbol **dyn_syms,
2984 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2986 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2991 opd = bfd_get_section_by_name (abfd, ".opd");
2995 symcount = static_count;
2997 symcount += dyn_count;
3001 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3005 if (!relocatable && static_count != 0 && dyn_count != 0)
3007 /* Use both symbol tables. */
3008 memcpy (syms, static_syms, static_count * sizeof (*syms));
3009 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3011 else if (!relocatable && static_count == 0)
3012 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3014 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3016 synthetic_relocatable = relocatable;
3017 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3019 if (!relocatable && symcount > 1)
3022 /* Trim duplicate syms, since we may have merged the normal and
3023 dynamic symbols. Actually, we only care about syms that have
3024 different values, so trim any with the same value. */
3025 for (i = 1, j = 1; i < symcount; ++i)
3026 if (syms[i - 1]->value + syms[i - 1]->section->vma
3027 != syms[i]->value + syms[i]->section->vma)
3028 syms[j++] = syms[i];
3033 if (strcmp (syms[i]->section->name, ".opd") == 0)
3037 for (; i < symcount; ++i)
3038 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3039 != (SEC_CODE | SEC_ALLOC))
3040 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3044 for (; i < symcount; ++i)
3045 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3049 for (; i < symcount; ++i)
3050 if (strcmp (syms[i]->section->name, ".opd") != 0)
3054 for (; i < symcount; ++i)
3055 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3056 != (SEC_CODE | SEC_ALLOC))
3064 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3069 if (opdsymend == secsymend)
3072 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3073 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3077 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3084 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3088 while (r < opd->relocation + relcount
3089 && r->address < syms[i]->value + opd->vma)
3092 if (r == opd->relocation + relcount)
3095 if (r->address != syms[i]->value + opd->vma)
3098 if (r->howto->type != R_PPC64_ADDR64)
3101 sym = *r->sym_ptr_ptr;
3102 if (!sym_exists_at (syms, opdsymend, symcount,
3103 sym->section->id, sym->value + r->addend))
3106 size += sizeof (asymbol);
3107 size += strlen (syms[i]->name) + 2;
3111 s = *ret = bfd_malloc (size);
3118 names = (char *) (s + count);
3120 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3124 while (r < opd->relocation + relcount
3125 && r->address < syms[i]->value + opd->vma)
3128 if (r == opd->relocation + relcount)
3131 if (r->address != syms[i]->value + opd->vma)
3134 if (r->howto->type != R_PPC64_ADDR64)
3137 sym = *r->sym_ptr_ptr;
3138 if (!sym_exists_at (syms, opdsymend, symcount,
3139 sym->section->id, sym->value + r->addend))
3144 s->flags |= BSF_SYNTHETIC;
3145 s->section = sym->section;
3146 s->value = sym->value + r->addend;
3149 len = strlen (syms[i]->name);
3150 memcpy (names, syms[i]->name, len + 1);
3152 /* Have udata.p point back to the original symbol this
3153 synthetic symbol was derived from. */
3154 s->udata.p = syms[i];
3161 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3165 bfd_vma glink_vma = 0, resolv_vma = 0;
3166 asection *dynamic, *glink = NULL, *relplt = NULL;
3169 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3173 free_contents_and_exit:
3181 for (i = secsymend; i < opdsymend; ++i)
3185 /* Ignore bogus symbols. */
3186 if (syms[i]->value > opd->size - 8)
3189 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3190 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3193 size += sizeof (asymbol);
3194 size += strlen (syms[i]->name) + 2;
3198 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3200 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3202 bfd_byte *dynbuf, *extdyn, *extdynend;
3204 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3206 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3207 goto free_contents_and_exit;
3209 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3210 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3213 extdynend = extdyn + dynamic->size;
3214 for (; extdyn < extdynend; extdyn += extdynsize)
3216 Elf_Internal_Dyn dyn;
3217 (*swap_dyn_in) (abfd, extdyn, &dyn);
3219 if (dyn.d_tag == DT_NULL)
3222 if (dyn.d_tag == DT_PPC64_GLINK)
3224 /* The first glink stub starts at offset 32; see comment in
3225 ppc64_elf_finish_dynamic_sections. */
3226 glink_vma = dyn.d_un.d_val + 32;
3227 /* The .glink section usually does not survive the final
3228 link; search for the section (usually .text) where the
3229 glink stubs now reside. */
3230 glink = bfd_sections_find_if (abfd, section_covers_vma,
3241 /* Determine __glink trampoline by reading the relative branch
3242 from the first glink stub. */
3244 if (bfd_get_section_contents (abfd, glink, buf,
3245 glink_vma + 4 - glink->vma, 4))
3247 unsigned int insn = bfd_get_32 (abfd, buf);
3249 if ((insn & ~0x3fffffc) == 0)
3250 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3254 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3256 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3259 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3260 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3261 goto free_contents_and_exit;
3263 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3264 size += plt_count * sizeof (asymbol);
3266 p = relplt->relocation;
3267 for (i = 0; i < plt_count; i++, p++)
3269 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3271 size += sizeof ("+0x") - 1 + 16;
3276 s = *ret = bfd_malloc (size);
3278 goto free_contents_and_exit;
3280 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3282 for (i = secsymend; i < opdsymend; ++i)
3286 if (syms[i]->value > opd->size - 8)
3289 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3290 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3294 asection *sec = abfd->sections;
3301 long mid = (lo + hi) >> 1;
3302 if (syms[mid]->section->vma < ent)
3304 else if (syms[mid]->section->vma > ent)
3308 sec = syms[mid]->section;
3313 if (lo >= hi && lo > codesecsym)
3314 sec = syms[lo - 1]->section;
3316 for (; sec != NULL; sec = sec->next)
3320 if ((sec->flags & SEC_ALLOC) == 0
3321 || (sec->flags & SEC_LOAD) == 0)
3323 if ((sec->flags & SEC_CODE) != 0)
3326 s->flags |= BSF_SYNTHETIC;
3327 s->value = ent - s->section->vma;
3330 len = strlen (syms[i]->name);
3331 memcpy (names, syms[i]->name, len + 1);
3333 /* Have udata.p point back to the original symbol this
3334 synthetic symbol was derived from. */
3335 s->udata.p = syms[i];
3341 if (glink != NULL && relplt != NULL)
3345 /* Add a symbol for the main glink trampoline. */
3346 memset (s, 0, sizeof *s);
3348 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3350 s->value = resolv_vma - glink->vma;
3352 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3353 names += sizeof ("__glink_PLTresolve");
3358 /* FIXME: It would be very much nicer to put sym@plt on the
3359 stub rather than on the glink branch table entry. The
3360 objdump disassembler would then use a sensible symbol
3361 name on plt calls. The difficulty in doing so is
3362 a) finding the stubs, and,
3363 b) matching stubs against plt entries, and,
3364 c) there can be multiple stubs for a given plt entry.
3366 Solving (a) could be done by code scanning, but older
3367 ppc64 binaries used different stubs to current code.
3368 (b) is the tricky one since you need to known the toc
3369 pointer for at least one function that uses a pic stub to
3370 be able to calculate the plt address referenced.
3371 (c) means gdb would need to set multiple breakpoints (or
3372 find the glink branch itself) when setting breakpoints
3373 for pending shared library loads. */
3374 p = relplt->relocation;
3375 for (i = 0; i < plt_count; i++, p++)
3379 *s = **p->sym_ptr_ptr;
3380 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3381 we are defining a symbol, ensure one of them is set. */
3382 if ((s->flags & BSF_LOCAL) == 0)
3383 s->flags |= BSF_GLOBAL;
3384 s->flags |= BSF_SYNTHETIC;
3386 s->value = glink_vma - glink->vma;
3389 len = strlen ((*p->sym_ptr_ptr)->name);
3390 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3394 memcpy (names, "+0x", sizeof ("+0x") - 1);
3395 names += sizeof ("+0x") - 1;
3396 bfd_sprintf_vma (abfd, names, p->addend);
3397 names += strlen (names);
3399 memcpy (names, "@plt", sizeof ("@plt"));
3400 names += sizeof ("@plt");
3415 /* The following functions are specific to the ELF linker, while
3416 functions above are used generally. Those named ppc64_elf_* are
3417 called by the main ELF linker code. They appear in this file more
3418 or less in the order in which they are called. eg.
3419 ppc64_elf_check_relocs is called early in the link process,
3420 ppc64_elf_finish_dynamic_sections is one of the last functions
3423 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3424 functions have both a function code symbol and a function descriptor
3425 symbol. A call to foo in a relocatable object file looks like:
3432 The function definition in another object file might be:
3436 . .quad .TOC.@tocbase
3442 When the linker resolves the call during a static link, the branch
3443 unsurprisingly just goes to .foo and the .opd information is unused.
3444 If the function definition is in a shared library, things are a little
3445 different: The call goes via a plt call stub, the opd information gets
3446 copied to the plt, and the linker patches the nop.
3454 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3455 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3456 . std 2,40(1) # this is the general idea
3464 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3466 The "reloc ()" notation is supposed to indicate that the linker emits
3467 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3470 What are the difficulties here? Well, firstly, the relocations
3471 examined by the linker in check_relocs are against the function code
3472 sym .foo, while the dynamic relocation in the plt is emitted against
3473 the function descriptor symbol, foo. Somewhere along the line, we need
3474 to carefully copy dynamic link information from one symbol to the other.
3475 Secondly, the generic part of the elf linker will make .foo a dynamic
3476 symbol as is normal for most other backends. We need foo dynamic
3477 instead, at least for an application final link. However, when
3478 creating a shared library containing foo, we need to have both symbols
3479 dynamic so that references to .foo are satisfied during the early
3480 stages of linking. Otherwise the linker might decide to pull in a
3481 definition from some other object, eg. a static library.
3483 Update: As of August 2004, we support a new convention. Function
3484 calls may use the function descriptor symbol, ie. "bl foo". This
3485 behaves exactly as "bl .foo". */
3487 /* The linker needs to keep track of the number of relocs that it
3488 decides to copy as dynamic relocs in check_relocs for each symbol.
3489 This is so that it can later discard them if they are found to be
3490 unnecessary. We store the information in a field extending the
3491 regular ELF linker hash table. */
3493 struct ppc_dyn_relocs
3495 struct ppc_dyn_relocs *next;
3497 /* The input section of the reloc. */
3500 /* Total number of relocs copied for the input section. */
3501 bfd_size_type count;
3503 /* Number of pc-relative relocs copied for the input section. */
3504 bfd_size_type pc_count;
3507 /* Of those relocs that might be copied as dynamic relocs, this function
3508 selects those that must be copied when linking a shared library,
3509 even when the symbol is local. */
3512 must_be_dyn_reloc (struct bfd_link_info *info,
3513 enum elf_ppc64_reloc_type r_type)
3525 case R_PPC64_TPREL16:
3526 case R_PPC64_TPREL16_LO:
3527 case R_PPC64_TPREL16_HI:
3528 case R_PPC64_TPREL16_HA:
3529 case R_PPC64_TPREL16_DS:
3530 case R_PPC64_TPREL16_LO_DS:
3531 case R_PPC64_TPREL16_HIGHER:
3532 case R_PPC64_TPREL16_HIGHERA:
3533 case R_PPC64_TPREL16_HIGHEST:
3534 case R_PPC64_TPREL16_HIGHESTA:
3535 case R_PPC64_TPREL64:
3536 return !info->executable;
3540 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3541 copying dynamic variables from a shared lib into an app's dynbss
3542 section, and instead use a dynamic relocation to point into the
3543 shared lib. With code that gcc generates, it's vital that this be
3544 enabled; In the PowerPC64 ABI, the address of a function is actually
3545 the address of a function descriptor, which resides in the .opd
3546 section. gcc uses the descriptor directly rather than going via the
3547 GOT as some other ABI's do, which means that initialized function
3548 pointers must reference the descriptor. Thus, a function pointer
3549 initialized to the address of a function in a shared library will
3550 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3551 redefines the function descriptor symbol to point to the copy. This
3552 presents a problem as a plt entry for that function is also
3553 initialized from the function descriptor symbol and the copy reloc
3554 may not be initialized first. */
3555 #define ELIMINATE_COPY_RELOCS 1
3557 /* Section name for stubs is the associated section name plus this
3559 #define STUB_SUFFIX ".stub"
3562 ppc_stub_long_branch:
3563 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3564 destination, but a 24 bit branch in a stub section will reach.
3567 ppc_stub_plt_branch:
3568 Similar to the above, but a 24 bit branch in the stub section won't
3569 reach its destination.
3570 . addis %r12,%r2,xxx@toc@ha
3571 . ld %r11,xxx@toc@l(%r12)
3576 Used to call a function in a shared library. If it so happens that
3577 the plt entry referenced crosses a 64k boundary, then an extra
3578 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3579 . addis %r12,%r2,xxx@toc@ha
3581 . ld %r11,xxx+0@toc@l(%r12)
3583 . ld %r2,xxx+8@toc@l(%r12)
3584 . ld %r11,xxx+16@toc@l(%r12)
3587 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3588 code to adjust the value and save r2 to support multiple toc sections.
3589 A ppc_stub_long_branch with an r2 offset looks like:
3591 . addis %r2,%r2,off@ha
3592 . addi %r2,%r2,off@l
3595 A ppc_stub_plt_branch with an r2 offset looks like:
3597 . addis %r12,%r2,xxx@toc@ha
3598 . ld %r11,xxx@toc@l(%r12)
3599 . addis %r2,%r2,off@ha
3600 . addi %r2,%r2,off@l
3604 In cases where the "addis" instruction would add zero, the "addis" is
3605 omitted and following instructions modified slightly in some cases.
3608 enum ppc_stub_type {
3610 ppc_stub_long_branch,
3611 ppc_stub_long_branch_r2off,
3612 ppc_stub_plt_branch,
3613 ppc_stub_plt_branch_r2off,
3617 struct ppc_stub_hash_entry {
3619 /* Base hash table entry structure. */
3620 struct bfd_hash_entry root;
3622 enum ppc_stub_type stub_type;
3624 /* The stub section. */
3627 /* Offset within stub_sec of the beginning of this stub. */
3628 bfd_vma stub_offset;
3630 /* Given the symbol's value and its section we can determine its final
3631 value when building the stubs (so the stub knows where to jump. */
3632 bfd_vma target_value;
3633 asection *target_section;
3635 /* The symbol table entry, if any, that this was derived from. */
3636 struct ppc_link_hash_entry *h;
3637 struct plt_entry *plt_ent;
3639 /* And the reloc addend that this was derived from. */
3642 /* Where this stub is being called from, or, in the case of combined
3643 stub sections, the first input section in the group. */
3647 struct ppc_branch_hash_entry {
3649 /* Base hash table entry structure. */
3650 struct bfd_hash_entry root;
3652 /* Offset within branch lookup table. */
3653 unsigned int offset;
3655 /* Generation marker. */
3659 struct ppc_link_hash_entry
3661 struct elf_link_hash_entry elf;
3664 /* A pointer to the most recently used stub hash entry against this
3666 struct ppc_stub_hash_entry *stub_cache;
3668 /* A pointer to the next symbol starting with a '.' */
3669 struct ppc_link_hash_entry *next_dot_sym;
3672 /* Track dynamic relocs copied for this symbol. */
3673 struct ppc_dyn_relocs *dyn_relocs;
3675 /* Link between function code and descriptor symbols. */
3676 struct ppc_link_hash_entry *oh;
3678 /* Flag function code and descriptor symbols. */
3679 unsigned int is_func:1;
3680 unsigned int is_func_descriptor:1;
3681 unsigned int fake:1;
3683 /* Whether global opd/toc sym has been adjusted or not.
3684 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3685 should be set for all globals defined in any opd/toc section. */
3686 unsigned int adjust_done:1;
3688 /* Set if we twiddled this symbol to weak at some stage. */
3689 unsigned int was_undefined:1;
3691 /* Contexts in which symbol is used in the GOT (or TOC).
3692 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3693 corresponding relocs are encountered during check_relocs.
3694 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3695 indicate the corresponding GOT entry type is not needed.
3696 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3697 a TPREL one. We use a separate flag rather than setting TPREL
3698 just for convenience in distinguishing the two cases. */
3699 #define TLS_GD 1 /* GD reloc. */
3700 #define TLS_LD 2 /* LD reloc. */
3701 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3702 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3703 #define TLS_TLS 16 /* Any TLS reloc. */
3704 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3705 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3706 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3707 unsigned char tls_mask;
3710 /* ppc64 ELF linker hash table. */
3712 struct ppc_link_hash_table
3714 struct elf_link_hash_table elf;
3716 /* The stub hash table. */
3717 struct bfd_hash_table stub_hash_table;
3719 /* Another hash table for plt_branch stubs. */
3720 struct bfd_hash_table branch_hash_table;
3722 /* Linker stub bfd. */
3725 /* Linker call-backs. */
3726 asection * (*add_stub_section) (const char *, asection *);
3727 void (*layout_sections_again) (void);
3729 /* Array to keep track of which stub sections have been created, and
3730 information on stub grouping. */
3732 /* This is the section to which stubs in the group will be attached. */
3734 /* The stub section. */
3736 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3740 /* Temp used when calculating TOC pointers. */
3743 asection *toc_first_sec;
3745 /* Highest input section id. */
3748 /* Highest output section index. */
3751 /* Used when adding symbols. */
3752 struct ppc_link_hash_entry *dot_syms;
3754 /* List of input sections for each output section. */
3755 asection **input_list;
3757 /* Short-cuts to get to dynamic linker sections. */
3770 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3771 struct ppc_link_hash_entry *tls_get_addr;
3772 struct ppc_link_hash_entry *tls_get_addr_fd;
3774 /* The size of reliplt used by got entry relocs. */
3775 bfd_size_type got_reli_size;
3778 unsigned long stub_count[ppc_stub_plt_call];
3780 /* Number of stubs against global syms. */
3781 unsigned long stub_globals;
3783 /* Set if we should emit symbols for stubs. */
3784 unsigned int emit_stub_syms:1;
3786 /* Set if __tls_get_addr optimization should not be done. */
3787 unsigned int no_tls_get_addr_opt:1;
3789 /* Support for multiple toc sections. */
3790 unsigned int do_multi_toc:1;
3791 unsigned int multi_toc_needed:1;
3792 unsigned int second_toc_pass:1;
3793 unsigned int do_toc_opt:1;
3796 unsigned int stub_error:1;
3798 /* Temp used by ppc64_elf_process_dot_syms. */
3799 unsigned int twiddled_syms:1;
3801 /* Incremented every time we size stubs. */
3802 unsigned int stub_iteration;
3804 /* Small local sym cache. */
3805 struct sym_cache sym_cache;
3808 /* Rename some of the generic section flags to better document how they
3811 /* Nonzero if this section has TLS related relocations. */
3812 #define has_tls_reloc sec_flg0
3814 /* Nonzero if this section has a call to __tls_get_addr. */
3815 #define has_tls_get_addr_call sec_flg1
3817 /* Nonzero if this section has any toc or got relocs. */
3818 #define has_toc_reloc sec_flg2
3820 /* Nonzero if this section has a call to another section that uses
3822 #define makes_toc_func_call sec_flg3
3824 /* Recursion protection when determining above flag. */
3825 #define call_check_in_progress sec_flg4
3826 #define call_check_done sec_flg5
3828 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3830 #define ppc_hash_table(p) \
3831 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3832 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3834 #define ppc_stub_hash_lookup(table, string, create, copy) \
3835 ((struct ppc_stub_hash_entry *) \
3836 bfd_hash_lookup ((table), (string), (create), (copy)))
3838 #define ppc_branch_hash_lookup(table, string, create, copy) \
3839 ((struct ppc_branch_hash_entry *) \
3840 bfd_hash_lookup ((table), (string), (create), (copy)))
3842 /* Create an entry in the stub hash table. */
3844 static struct bfd_hash_entry *
3845 stub_hash_newfunc (struct bfd_hash_entry *entry,
3846 struct bfd_hash_table *table,
3849 /* Allocate the structure if it has not already been allocated by a
3853 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3858 /* Call the allocation method of the superclass. */
3859 entry = bfd_hash_newfunc (entry, table, string);
3862 struct ppc_stub_hash_entry *eh;
3864 /* Initialize the local fields. */
3865 eh = (struct ppc_stub_hash_entry *) entry;
3866 eh->stub_type = ppc_stub_none;
3867 eh->stub_sec = NULL;
3868 eh->stub_offset = 0;
3869 eh->target_value = 0;
3870 eh->target_section = NULL;
3878 /* Create an entry in the branch hash table. */
3880 static struct bfd_hash_entry *
3881 branch_hash_newfunc (struct bfd_hash_entry *entry,
3882 struct bfd_hash_table *table,
3885 /* Allocate the structure if it has not already been allocated by a
3889 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3894 /* Call the allocation method of the superclass. */
3895 entry = bfd_hash_newfunc (entry, table, string);
3898 struct ppc_branch_hash_entry *eh;
3900 /* Initialize the local fields. */
3901 eh = (struct ppc_branch_hash_entry *) entry;
3909 /* Create an entry in a ppc64 ELF linker hash table. */
3911 static struct bfd_hash_entry *
3912 link_hash_newfunc (struct bfd_hash_entry *entry,
3913 struct bfd_hash_table *table,
3916 /* Allocate the structure if it has not already been allocated by a
3920 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3925 /* Call the allocation method of the superclass. */
3926 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3929 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3931 memset (&eh->u.stub_cache, 0,
3932 (sizeof (struct ppc_link_hash_entry)
3933 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3935 /* When making function calls, old ABI code references function entry
3936 points (dot symbols), while new ABI code references the function
3937 descriptor symbol. We need to make any combination of reference and
3938 definition work together, without breaking archive linking.
3940 For a defined function "foo" and an undefined call to "bar":
3941 An old object defines "foo" and ".foo", references ".bar" (possibly
3943 A new object defines "foo" and references "bar".
3945 A new object thus has no problem with its undefined symbols being
3946 satisfied by definitions in an old object. On the other hand, the
3947 old object won't have ".bar" satisfied by a new object.
3949 Keep a list of newly added dot-symbols. */
3951 if (string[0] == '.')
3953 struct ppc_link_hash_table *htab;
3955 htab = (struct ppc_link_hash_table *) table;
3956 eh->u.next_dot_sym = htab->dot_syms;
3957 htab->dot_syms = eh;
3964 /* Create a ppc64 ELF linker hash table. */
3966 static struct bfd_link_hash_table *
3967 ppc64_elf_link_hash_table_create (bfd *abfd)
3969 struct ppc_link_hash_table *htab;
3970 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3972 htab = bfd_zmalloc (amt);
3976 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3977 sizeof (struct ppc_link_hash_entry),
3984 /* Init the stub hash table too. */
3985 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3986 sizeof (struct ppc_stub_hash_entry)))
3989 /* And the branch hash table. */
3990 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3991 sizeof (struct ppc_branch_hash_entry)))
3994 /* Initializing two fields of the union is just cosmetic. We really
3995 only care about glist, but when compiled on a 32-bit host the
3996 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3997 debugger inspection of these fields look nicer. */
3998 htab->elf.init_got_refcount.refcount = 0;
3999 htab->elf.init_got_refcount.glist = NULL;
4000 htab->elf.init_plt_refcount.refcount = 0;
4001 htab->elf.init_plt_refcount.glist = NULL;
4002 htab->elf.init_got_offset.offset = 0;
4003 htab->elf.init_got_offset.glist = NULL;
4004 htab->elf.init_plt_offset.offset = 0;
4005 htab->elf.init_plt_offset.glist = NULL;
4007 return &htab->elf.root;
4010 /* Free the derived linker hash table. */
4013 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4015 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
4017 bfd_hash_table_free (&ret->stub_hash_table);
4018 bfd_hash_table_free (&ret->branch_hash_table);
4019 _bfd_generic_link_hash_table_free (hash);
4022 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4025 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4027 struct ppc_link_hash_table *htab;
4029 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4031 /* Always hook our dynamic sections into the first bfd, which is the
4032 linker created stub bfd. This ensures that the GOT header is at
4033 the start of the output TOC section. */
4034 htab = ppc_hash_table (info);
4037 htab->stub_bfd = abfd;
4038 htab->elf.dynobj = abfd;
4041 /* Build a name for an entry in the stub hash table. */
4044 ppc_stub_name (const asection *input_section,
4045 const asection *sym_sec,
4046 const struct ppc_link_hash_entry *h,
4047 const Elf_Internal_Rela *rel)
4052 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4053 offsets from a sym as a branch target? In fact, we could
4054 probably assume the addend is always zero. */
4055 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4059 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4060 stub_name = bfd_malloc (len);
4061 if (stub_name == NULL)
4064 sprintf (stub_name, "%08x.%s+%x",
4065 input_section->id & 0xffffffff,
4066 h->elf.root.root.string,
4067 (int) rel->r_addend & 0xffffffff);
4071 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4072 stub_name = bfd_malloc (len);
4073 if (stub_name == NULL)
4076 sprintf (stub_name, "%08x.%x:%x+%x",
4077 input_section->id & 0xffffffff,
4078 sym_sec->id & 0xffffffff,
4079 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4080 (int) rel->r_addend & 0xffffffff);
4082 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4083 stub_name[len - 2] = 0;
4087 /* Look up an entry in the stub hash. Stub entries are cached because
4088 creating the stub name takes a bit of time. */
4090 static struct ppc_stub_hash_entry *
4091 ppc_get_stub_entry (const asection *input_section,
4092 const asection *sym_sec,
4093 struct ppc_link_hash_entry *h,
4094 const Elf_Internal_Rela *rel,
4095 struct ppc_link_hash_table *htab)
4097 struct ppc_stub_hash_entry *stub_entry;
4098 const asection *id_sec;
4100 /* If this input section is part of a group of sections sharing one
4101 stub section, then use the id of the first section in the group.
4102 Stub names need to include a section id, as there may well be
4103 more than one stub used to reach say, printf, and we need to
4104 distinguish between them. */
4105 id_sec = htab->stub_group[input_section->id].link_sec;
4107 if (h != NULL && h->u.stub_cache != NULL
4108 && h->u.stub_cache->h == h
4109 && h->u.stub_cache->id_sec == id_sec)
4111 stub_entry = h->u.stub_cache;
4117 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4118 if (stub_name == NULL)
4121 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4122 stub_name, FALSE, FALSE);
4124 h->u.stub_cache = stub_entry;
4132 /* Add a new stub entry to the stub hash. Not all fields of the new
4133 stub entry are initialised. */
4135 static struct ppc_stub_hash_entry *
4136 ppc_add_stub (const char *stub_name,
4138 struct ppc_link_hash_table *htab)
4142 struct ppc_stub_hash_entry *stub_entry;
4144 link_sec = htab->stub_group[section->id].link_sec;
4145 stub_sec = htab->stub_group[section->id].stub_sec;
4146 if (stub_sec == NULL)
4148 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4149 if (stub_sec == NULL)
4155 namelen = strlen (link_sec->name);
4156 len = namelen + sizeof (STUB_SUFFIX);
4157 s_name = bfd_alloc (htab->stub_bfd, len);
4161 memcpy (s_name, link_sec->name, namelen);
4162 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4163 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4164 if (stub_sec == NULL)
4166 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4168 htab->stub_group[section->id].stub_sec = stub_sec;
4171 /* Enter this entry into the linker stub hash table. */
4172 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4174 if (stub_entry == NULL)
4176 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
4177 section->owner, stub_name);
4181 stub_entry->stub_sec = stub_sec;
4182 stub_entry->stub_offset = 0;
4183 stub_entry->id_sec = link_sec;
4187 /* Create sections for linker generated code. */
4190 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4192 struct ppc_link_hash_table *htab;
4195 htab = ppc_hash_table (info);
4199 /* Create .sfpr for code to save and restore fp regs. */
4200 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4201 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4202 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4204 if (htab->sfpr == NULL
4205 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4208 /* Create .glink for lazy dynamic linking support. */
4209 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4211 if (htab->glink == NULL
4212 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4215 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4216 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4217 if (htab->iplt == NULL
4218 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4221 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4222 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4223 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4226 if (htab->reliplt == NULL
4227 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4230 /* Create branch lookup table for plt_branch stubs. */
4231 flags = (SEC_ALLOC | SEC_LOAD
4232 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4233 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4235 if (htab->brlt == NULL
4236 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4242 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4243 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4244 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4247 if (htab->relbrlt == NULL
4248 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4254 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4255 not already done. */
4258 create_got_section (bfd *abfd, struct bfd_link_info *info)
4260 asection *got, *relgot;
4262 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4264 if (!is_ppc64_elf (abfd))
4271 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4274 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4279 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4280 | SEC_LINKER_CREATED);
4282 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4284 || !bfd_set_section_alignment (abfd, got, 3))
4287 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4288 flags | SEC_READONLY);
4290 || ! bfd_set_section_alignment (abfd, relgot, 3))
4293 ppc64_elf_tdata (abfd)->got = got;
4294 ppc64_elf_tdata (abfd)->relgot = relgot;
4298 /* Create the dynamic sections, and set up shortcuts. */
4301 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4303 struct ppc_link_hash_table *htab;
4305 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4308 htab = ppc_hash_table (info);
4313 htab->got = bfd_get_section_by_name (dynobj, ".got");
4314 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4315 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4316 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
4318 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
4320 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4321 || (!info->shared && !htab->relbss))
4327 /* Follow indirect and warning symbol links. */
4329 static inline struct bfd_link_hash_entry *
4330 follow_link (struct bfd_link_hash_entry *h)
4332 while (h->type == bfd_link_hash_indirect
4333 || h->type == bfd_link_hash_warning)
4338 static inline struct elf_link_hash_entry *
4339 elf_follow_link (struct elf_link_hash_entry *h)
4341 return (struct elf_link_hash_entry *) follow_link (&h->root);
4344 static inline struct ppc_link_hash_entry *
4345 ppc_follow_link (struct ppc_link_hash_entry *h)
4347 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4350 /* Merge PLT info on FROM with that on TO. */
4353 move_plt_plist (struct ppc_link_hash_entry *from,
4354 struct ppc_link_hash_entry *to)
4356 if (from->elf.plt.plist != NULL)
4358 if (to->elf.plt.plist != NULL)
4360 struct plt_entry **entp;
4361 struct plt_entry *ent;
4363 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4365 struct plt_entry *dent;
4367 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4368 if (dent->addend == ent->addend)
4370 dent->plt.refcount += ent->plt.refcount;
4377 *entp = to->elf.plt.plist;
4380 to->elf.plt.plist = from->elf.plt.plist;
4381 from->elf.plt.plist = NULL;
4385 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4388 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4389 struct elf_link_hash_entry *dir,
4390 struct elf_link_hash_entry *ind)
4392 struct ppc_link_hash_entry *edir, *eind;
4394 edir = (struct ppc_link_hash_entry *) dir;
4395 eind = (struct ppc_link_hash_entry *) ind;
4397 /* Copy over any dynamic relocs we may have on the indirect sym. */
4398 if (eind->dyn_relocs != NULL)
4400 if (edir->dyn_relocs != NULL)
4402 struct ppc_dyn_relocs **pp;
4403 struct ppc_dyn_relocs *p;
4405 /* Add reloc counts against the indirect sym to the direct sym
4406 list. Merge any entries against the same section. */
4407 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4409 struct ppc_dyn_relocs *q;
4411 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4412 if (q->sec == p->sec)
4414 q->pc_count += p->pc_count;
4415 q->count += p->count;
4422 *pp = edir->dyn_relocs;
4425 edir->dyn_relocs = eind->dyn_relocs;
4426 eind->dyn_relocs = NULL;
4429 edir->is_func |= eind->is_func;
4430 edir->is_func_descriptor |= eind->is_func_descriptor;
4431 edir->tls_mask |= eind->tls_mask;
4432 if (eind->oh != NULL)
4433 edir->oh = ppc_follow_link (eind->oh);
4435 /* If called to transfer flags for a weakdef during processing
4436 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4437 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4438 if (!(ELIMINATE_COPY_RELOCS
4439 && eind->elf.root.type != bfd_link_hash_indirect
4440 && edir->elf.dynamic_adjusted))
4441 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4443 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4444 edir->elf.ref_regular |= eind->elf.ref_regular;
4445 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4446 edir->elf.needs_plt |= eind->elf.needs_plt;
4448 /* If we were called to copy over info for a weak sym, that's all. */
4449 if (eind->elf.root.type != bfd_link_hash_indirect)
4452 /* Copy over got entries that we may have already seen to the
4453 symbol which just became indirect. */
4454 if (eind->elf.got.glist != NULL)
4456 if (edir->elf.got.glist != NULL)
4458 struct got_entry **entp;
4459 struct got_entry *ent;
4461 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4463 struct got_entry *dent;
4465 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4466 if (dent->addend == ent->addend
4467 && dent->owner == ent->owner
4468 && dent->tls_type == ent->tls_type)
4470 dent->got.refcount += ent->got.refcount;
4477 *entp = edir->elf.got.glist;
4480 edir->elf.got.glist = eind->elf.got.glist;
4481 eind->elf.got.glist = NULL;
4484 /* And plt entries. */
4485 move_plt_plist (eind, edir);
4487 if (eind->elf.dynindx != -1)
4489 if (edir->elf.dynindx != -1)
4490 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4491 edir->elf.dynstr_index);
4492 edir->elf.dynindx = eind->elf.dynindx;
4493 edir->elf.dynstr_index = eind->elf.dynstr_index;
4494 eind->elf.dynindx = -1;
4495 eind->elf.dynstr_index = 0;
4499 /* Find the function descriptor hash entry from the given function code
4500 hash entry FH. Link the entries via their OH fields. */
4502 static struct ppc_link_hash_entry *
4503 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4505 struct ppc_link_hash_entry *fdh = fh->oh;
4509 const char *fd_name = fh->elf.root.root.string + 1;
4511 fdh = (struct ppc_link_hash_entry *)
4512 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4516 fdh->is_func_descriptor = 1;
4522 return ppc_follow_link (fdh);
4525 /* Make a fake function descriptor sym for the code sym FH. */
4527 static struct ppc_link_hash_entry *
4528 make_fdh (struct bfd_link_info *info,
4529 struct ppc_link_hash_entry *fh)
4533 struct bfd_link_hash_entry *bh;
4534 struct ppc_link_hash_entry *fdh;
4536 abfd = fh->elf.root.u.undef.abfd;
4537 newsym = bfd_make_empty_symbol (abfd);
4538 newsym->name = fh->elf.root.root.string + 1;
4539 newsym->section = bfd_und_section_ptr;
4541 newsym->flags = BSF_WEAK;
4544 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4545 newsym->flags, newsym->section,
4546 newsym->value, NULL, FALSE, FALSE,
4550 fdh = (struct ppc_link_hash_entry *) bh;
4551 fdh->elf.non_elf = 0;
4553 fdh->is_func_descriptor = 1;
4560 /* Fix function descriptor symbols defined in .opd sections to be
4564 ppc64_elf_add_symbol_hook (bfd *ibfd,
4565 struct bfd_link_info *info,
4566 Elf_Internal_Sym *isym,
4567 const char **name ATTRIBUTE_UNUSED,
4568 flagword *flags ATTRIBUTE_UNUSED,
4570 bfd_vma *value ATTRIBUTE_UNUSED)
4572 if ((ibfd->flags & DYNAMIC) == 0
4573 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4574 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4576 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4578 if ((ibfd->flags & DYNAMIC) == 0)
4579 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4581 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4583 else if (*sec != NULL
4584 && strcmp ((*sec)->name, ".opd") == 0)
4585 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4590 /* This function makes an old ABI object reference to ".bar" cause the
4591 inclusion of a new ABI object archive that defines "bar".
4592 NAME is a symbol defined in an archive. Return a symbol in the hash
4593 table that might be satisfied by the archive symbols. */
4595 static struct elf_link_hash_entry *
4596 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4597 struct bfd_link_info *info,
4600 struct elf_link_hash_entry *h;
4604 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4606 /* Don't return this sym if it is a fake function descriptor
4607 created by add_symbol_adjust. */
4608 && !(h->root.type == bfd_link_hash_undefweak
4609 && ((struct ppc_link_hash_entry *) h)->fake))
4615 len = strlen (name);
4616 dot_name = bfd_alloc (abfd, len + 2);
4617 if (dot_name == NULL)
4618 return (struct elf_link_hash_entry *) 0 - 1;
4620 memcpy (dot_name + 1, name, len + 1);
4621 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4622 bfd_release (abfd, dot_name);
4626 /* This function satisfies all old ABI object references to ".bar" if a
4627 new ABI object defines "bar". Well, at least, undefined dot symbols
4628 are made weak. This stops later archive searches from including an
4629 object if we already have a function descriptor definition. It also
4630 prevents the linker complaining about undefined symbols.
4631 We also check and correct mismatched symbol visibility here. The
4632 most restrictive visibility of the function descriptor and the
4633 function entry symbol is used. */
4636 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4638 struct ppc_link_hash_table *htab;
4639 struct ppc_link_hash_entry *fdh;
4641 if (eh->elf.root.type == bfd_link_hash_indirect)
4644 if (eh->elf.root.type == bfd_link_hash_warning)
4645 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4647 if (eh->elf.root.root.string[0] != '.')
4650 htab = ppc_hash_table (info);
4654 fdh = lookup_fdh (eh, htab);
4657 if (!info->relocatable
4658 && (eh->elf.root.type == bfd_link_hash_undefined
4659 || eh->elf.root.type == bfd_link_hash_undefweak)
4660 && eh->elf.ref_regular)
4662 /* Make an undefweak function descriptor sym, which is enough to
4663 pull in an --as-needed shared lib, but won't cause link
4664 errors. Archives are handled elsewhere. */
4665 fdh = make_fdh (info, eh);
4668 fdh->elf.ref_regular = 1;
4673 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4674 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4675 if (entry_vis < descr_vis)
4676 fdh->elf.other += entry_vis - descr_vis;
4677 else if (entry_vis > descr_vis)
4678 eh->elf.other += descr_vis - entry_vis;
4680 if ((fdh->elf.root.type == bfd_link_hash_defined
4681 || fdh->elf.root.type == bfd_link_hash_defweak)
4682 && eh->elf.root.type == bfd_link_hash_undefined)
4684 eh->elf.root.type = bfd_link_hash_undefweak;
4685 eh->was_undefined = 1;
4686 htab->twiddled_syms = 1;
4693 /* Process list of dot-symbols we made in link_hash_newfunc. */
4696 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4698 struct ppc_link_hash_table *htab;
4699 struct ppc_link_hash_entry **p, *eh;
4701 if (!is_ppc64_elf (info->output_bfd))
4703 htab = ppc_hash_table (info);
4707 if (is_ppc64_elf (ibfd))
4709 p = &htab->dot_syms;
4710 while ((eh = *p) != NULL)
4713 if (!add_symbol_adjust (eh, info))
4715 p = &eh->u.next_dot_sym;
4719 /* Clear the list for non-ppc64 input files. */
4720 p = &htab->dot_syms;
4721 while ((eh = *p) != NULL)
4724 p = &eh->u.next_dot_sym;
4727 /* We need to fix the undefs list for any syms we have twiddled to
4729 if (htab->twiddled_syms)
4731 bfd_link_repair_undef_list (&htab->elf.root);
4732 htab->twiddled_syms = 0;
4737 /* Undo hash table changes when an --as-needed input file is determined
4738 not to be needed. */
4741 ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4742 struct bfd_link_info *info)
4744 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4749 htab->dot_syms = NULL;
4753 /* If --just-symbols against a final linked binary, then assume we need
4754 toc adjusting stubs when calling functions defined there. */
4757 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
4759 if ((sec->flags & SEC_CODE) != 0
4760 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
4761 && is_ppc64_elf (sec->owner))
4763 asection *got = bfd_get_section_by_name (sec->owner, ".got");
4765 && got->size >= elf_backend_got_header_size
4766 && bfd_get_section_by_name (sec->owner, ".opd") != NULL)
4767 sec->has_toc_reloc = 1;
4769 _bfd_elf_link_just_syms (sec, info);
4772 static struct plt_entry **
4773 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4774 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4776 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4777 struct plt_entry **local_plt;
4778 unsigned char *local_got_tls_masks;
4780 if (local_got_ents == NULL)
4782 bfd_size_type size = symtab_hdr->sh_info;
4784 size *= (sizeof (*local_got_ents)
4785 + sizeof (*local_plt)
4786 + sizeof (*local_got_tls_masks));
4787 local_got_ents = bfd_zalloc (abfd, size);
4788 if (local_got_ents == NULL)
4790 elf_local_got_ents (abfd) = local_got_ents;
4793 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
4795 struct got_entry *ent;
4797 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4798 if (ent->addend == r_addend
4799 && ent->owner == abfd
4800 && ent->tls_type == tls_type)
4804 bfd_size_type amt = sizeof (*ent);
4805 ent = bfd_alloc (abfd, amt);
4808 ent->next = local_got_ents[r_symndx];
4809 ent->addend = r_addend;
4811 ent->tls_type = tls_type;
4812 ent->is_indirect = FALSE;
4813 ent->got.refcount = 0;
4814 local_got_ents[r_symndx] = ent;
4816 ent->got.refcount += 1;
4819 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
4820 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
4821 local_got_tls_masks[r_symndx] |= tls_type;
4823 return local_plt + r_symndx;
4827 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
4829 struct plt_entry *ent;
4831 for (ent = *plist; ent != NULL; ent = ent->next)
4832 if (ent->addend == addend)
4836 bfd_size_type amt = sizeof (*ent);
4837 ent = bfd_alloc (abfd, amt);
4841 ent->addend = addend;
4842 ent->plt.refcount = 0;
4845 ent->plt.refcount += 1;
4850 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4852 return (r_type == R_PPC64_REL24
4853 || r_type == R_PPC64_REL14
4854 || r_type == R_PPC64_REL14_BRTAKEN
4855 || r_type == R_PPC64_REL14_BRNTAKEN
4856 || r_type == R_PPC64_ADDR24
4857 || r_type == R_PPC64_ADDR14
4858 || r_type == R_PPC64_ADDR14_BRTAKEN
4859 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4862 /* Look through the relocs for a section during the first phase, and
4863 calculate needed space in the global offset table, procedure
4864 linkage table, and dynamic reloc sections. */
4867 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4868 asection *sec, const Elf_Internal_Rela *relocs)
4870 struct ppc_link_hash_table *htab;
4871 Elf_Internal_Shdr *symtab_hdr;
4872 struct elf_link_hash_entry **sym_hashes;
4873 const Elf_Internal_Rela *rel;
4874 const Elf_Internal_Rela *rel_end;
4876 asection **opd_sym_map;
4877 struct elf_link_hash_entry *tga, *dottga;
4879 if (info->relocatable)
4882 /* Don't do anything special with non-loaded, non-alloced sections.
4883 In particular, any relocs in such sections should not affect GOT
4884 and PLT reference counting (ie. we don't allow them to create GOT
4885 or PLT entries), there's no possibility or desire to optimize TLS
4886 relocs, and there's not much point in propagating relocs to shared
4887 libs that the dynamic linker won't relocate. */
4888 if ((sec->flags & SEC_ALLOC) == 0)
4891 BFD_ASSERT (is_ppc64_elf (abfd));
4893 htab = ppc_hash_table (info);
4897 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4898 FALSE, FALSE, TRUE);
4899 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4900 FALSE, FALSE, TRUE);
4901 symtab_hdr = &elf_symtab_hdr (abfd);
4902 sym_hashes = elf_sym_hashes (abfd);
4905 if (strcmp (sec->name, ".opd") == 0)
4907 /* Garbage collection needs some extra help with .opd sections.
4908 We don't want to necessarily keep everything referenced by
4909 relocs in .opd, as that would keep all functions. Instead,
4910 if we reference an .opd symbol (a function descriptor), we
4911 want to keep the function code symbol's section. This is
4912 easy for global symbols, but for local syms we need to keep
4913 information about the associated function section. */
4916 amt = sec->size * sizeof (*opd_sym_map) / 8;
4917 opd_sym_map = bfd_zalloc (abfd, amt);
4918 if (opd_sym_map == NULL)
4920 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
4921 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4922 ppc64_elf_section_data (sec)->sec_type = sec_opd;
4925 if (htab->sfpr == NULL
4926 && !create_linkage_sections (htab->elf.dynobj, info))
4929 rel_end = relocs + sec->reloc_count;
4930 for (rel = relocs; rel < rel_end; rel++)
4932 unsigned long r_symndx;
4933 struct elf_link_hash_entry *h;
4934 enum elf_ppc64_reloc_type r_type;
4936 struct _ppc64_elf_section_data *ppc64_sec;
4937 struct plt_entry **ifunc;
4939 r_symndx = ELF64_R_SYM (rel->r_info);
4940 if (r_symndx < symtab_hdr->sh_info)
4944 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4945 h = elf_follow_link (h);
4952 if (h->type == STT_GNU_IFUNC)
4955 ifunc = &h->plt.plist;
4960 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4965 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4967 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4968 rel->r_addend, PLT_IFUNC);
4973 r_type = ELF64_R_TYPE (rel->r_info);
4974 if (is_branch_reloc (r_type))
4976 if (h != NULL && (h == tga || h == dottga))
4979 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
4980 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
4981 /* We have a new-style __tls_get_addr call with a marker
4985 /* Mark this section as having an old-style call. */
4986 sec->has_tls_get_addr_call = 1;
4989 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4991 && !update_plt_info (abfd, ifunc, rel->r_addend))
4999 /* These special tls relocs tie a call to __tls_get_addr with
5000 its parameter symbol. */
5003 case R_PPC64_GOT_TLSLD16:
5004 case R_PPC64_GOT_TLSLD16_LO:
5005 case R_PPC64_GOT_TLSLD16_HI:
5006 case R_PPC64_GOT_TLSLD16_HA:
5007 tls_type = TLS_TLS | TLS_LD;
5010 case R_PPC64_GOT_TLSGD16:
5011 case R_PPC64_GOT_TLSGD16_LO:
5012 case R_PPC64_GOT_TLSGD16_HI:
5013 case R_PPC64_GOT_TLSGD16_HA:
5014 tls_type = TLS_TLS | TLS_GD;
5017 case R_PPC64_GOT_TPREL16_DS:
5018 case R_PPC64_GOT_TPREL16_LO_DS:
5019 case R_PPC64_GOT_TPREL16_HI:
5020 case R_PPC64_GOT_TPREL16_HA:
5021 if (!info->executable)
5022 info->flags |= DF_STATIC_TLS;
5023 tls_type = TLS_TLS | TLS_TPREL;
5026 case R_PPC64_GOT_DTPREL16_DS:
5027 case R_PPC64_GOT_DTPREL16_LO_DS:
5028 case R_PPC64_GOT_DTPREL16_HI:
5029 case R_PPC64_GOT_DTPREL16_HA:
5030 tls_type = TLS_TLS | TLS_DTPREL;
5032 sec->has_tls_reloc = 1;
5036 case R_PPC64_GOT16_DS:
5037 case R_PPC64_GOT16_HA:
5038 case R_PPC64_GOT16_HI:
5039 case R_PPC64_GOT16_LO:
5040 case R_PPC64_GOT16_LO_DS:
5041 /* This symbol requires a global offset table entry. */
5042 sec->has_toc_reloc = 1;
5043 if (r_type == R_PPC64_GOT_TLSLD16
5044 || r_type == R_PPC64_GOT_TLSGD16
5045 || r_type == R_PPC64_GOT_TPREL16_DS
5046 || r_type == R_PPC64_GOT_DTPREL16_DS
5047 || r_type == R_PPC64_GOT16
5048 || r_type == R_PPC64_GOT16_DS)
5050 htab->do_multi_toc = 1;
5051 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5054 if (ppc64_elf_tdata (abfd)->got == NULL
5055 && !create_got_section (abfd, info))
5060 struct ppc_link_hash_entry *eh;
5061 struct got_entry *ent;
5063 eh = (struct ppc_link_hash_entry *) h;
5064 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5065 if (ent->addend == rel->r_addend
5066 && ent->owner == abfd
5067 && ent->tls_type == tls_type)
5071 bfd_size_type amt = sizeof (*ent);
5072 ent = bfd_alloc (abfd, amt);
5075 ent->next = eh->elf.got.glist;
5076 ent->addend = rel->r_addend;
5078 ent->tls_type = tls_type;
5079 ent->is_indirect = FALSE;
5080 ent->got.refcount = 0;
5081 eh->elf.got.glist = ent;
5083 ent->got.refcount += 1;
5084 eh->tls_mask |= tls_type;
5087 /* This is a global offset table entry for a local symbol. */
5088 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5089 rel->r_addend, tls_type))
5093 case R_PPC64_PLT16_HA:
5094 case R_PPC64_PLT16_HI:
5095 case R_PPC64_PLT16_LO:
5098 /* This symbol requires a procedure linkage table entry. We
5099 actually build the entry in adjust_dynamic_symbol,
5100 because this might be a case of linking PIC code without
5101 linking in any dynamic objects, in which case we don't
5102 need to generate a procedure linkage table after all. */
5105 /* It does not make sense to have a procedure linkage
5106 table entry for a local symbol. */
5107 bfd_set_error (bfd_error_bad_value);
5112 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5115 if (h->root.root.string[0] == '.'
5116 && h->root.root.string[1] != '\0')
5117 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5121 /* The following relocations don't need to propagate the
5122 relocation if linking a shared object since they are
5123 section relative. */
5124 case R_PPC64_SECTOFF:
5125 case R_PPC64_SECTOFF_LO:
5126 case R_PPC64_SECTOFF_HI:
5127 case R_PPC64_SECTOFF_HA:
5128 case R_PPC64_SECTOFF_DS:
5129 case R_PPC64_SECTOFF_LO_DS:
5130 case R_PPC64_DTPREL16:
5131 case R_PPC64_DTPREL16_LO:
5132 case R_PPC64_DTPREL16_HI:
5133 case R_PPC64_DTPREL16_HA:
5134 case R_PPC64_DTPREL16_DS:
5135 case R_PPC64_DTPREL16_LO_DS:
5136 case R_PPC64_DTPREL16_HIGHER:
5137 case R_PPC64_DTPREL16_HIGHERA:
5138 case R_PPC64_DTPREL16_HIGHEST:
5139 case R_PPC64_DTPREL16_HIGHESTA:
5144 case R_PPC64_REL16_LO:
5145 case R_PPC64_REL16_HI:
5146 case R_PPC64_REL16_HA:
5150 case R_PPC64_TOC16_DS:
5151 htab->do_multi_toc = 1;
5152 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5153 case R_PPC64_TOC16_LO:
5154 case R_PPC64_TOC16_HI:
5155 case R_PPC64_TOC16_HA:
5156 case R_PPC64_TOC16_LO_DS:
5157 sec->has_toc_reloc = 1;
5160 /* This relocation describes the C++ object vtable hierarchy.
5161 Reconstruct it for later use during GC. */
5162 case R_PPC64_GNU_VTINHERIT:
5163 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5167 /* This relocation describes which C++ vtable entries are actually
5168 used. Record for later use during GC. */
5169 case R_PPC64_GNU_VTENTRY:
5170 BFD_ASSERT (h != NULL);
5172 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5177 case R_PPC64_REL14_BRTAKEN:
5178 case R_PPC64_REL14_BRNTAKEN:
5180 asection *dest = NULL;
5182 /* Heuristic: If jumping outside our section, chances are
5183 we are going to need a stub. */
5186 /* If the sym is weak it may be overridden later, so
5187 don't assume we know where a weak sym lives. */
5188 if (h->root.type == bfd_link_hash_defined)
5189 dest = h->root.u.def.section;
5193 Elf_Internal_Sym *isym;
5195 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5200 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5204 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5209 if (h != NULL && ifunc == NULL)
5211 /* We may need a .plt entry if the function this reloc
5212 refers to is in a shared lib. */
5213 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5216 if (h->root.root.string[0] == '.'
5217 && h->root.root.string[1] != '\0')
5218 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5219 if (h == tga || h == dottga)
5220 sec->has_tls_reloc = 1;
5224 case R_PPC64_TPREL64:
5225 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5226 if (!info->executable)
5227 info->flags |= DF_STATIC_TLS;
5230 case R_PPC64_DTPMOD64:
5231 if (rel + 1 < rel_end
5232 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5233 && rel[1].r_offset == rel->r_offset + 8)
5234 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5236 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5239 case R_PPC64_DTPREL64:
5240 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5242 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5243 && rel[-1].r_offset == rel->r_offset - 8)
5244 /* This is the second reloc of a dtpmod, dtprel pair.
5245 Don't mark with TLS_DTPREL. */
5249 sec->has_tls_reloc = 1;
5252 struct ppc_link_hash_entry *eh;
5253 eh = (struct ppc_link_hash_entry *) h;
5254 eh->tls_mask |= tls_type;
5257 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5258 rel->r_addend, tls_type))
5261 ppc64_sec = ppc64_elf_section_data (sec);
5262 if (ppc64_sec->sec_type != sec_toc)
5266 /* One extra to simplify get_tls_mask. */
5267 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5268 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5269 if (ppc64_sec->u.toc.symndx == NULL)
5271 amt = sec->size * sizeof (bfd_vma) / 8;
5272 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5273 if (ppc64_sec->u.toc.add == NULL)
5275 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5276 ppc64_sec->sec_type = sec_toc;
5278 BFD_ASSERT (rel->r_offset % 8 == 0);
5279 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5280 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5282 /* Mark the second slot of a GD or LD entry.
5283 -1 to indicate GD and -2 to indicate LD. */
5284 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5285 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5286 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5287 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5290 case R_PPC64_TPREL16:
5291 case R_PPC64_TPREL16_LO:
5292 case R_PPC64_TPREL16_HI:
5293 case R_PPC64_TPREL16_HA:
5294 case R_PPC64_TPREL16_DS:
5295 case R_PPC64_TPREL16_LO_DS:
5296 case R_PPC64_TPREL16_HIGHER:
5297 case R_PPC64_TPREL16_HIGHERA:
5298 case R_PPC64_TPREL16_HIGHEST:
5299 case R_PPC64_TPREL16_HIGHESTA:
5302 if (!info->executable)
5303 info->flags |= DF_STATIC_TLS;
5308 case R_PPC64_ADDR64:
5309 if (opd_sym_map != NULL
5310 && rel + 1 < rel_end
5311 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5315 if (h->root.root.string[0] == '.'
5316 && h->root.root.string[1] != 0
5317 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5320 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5325 Elf_Internal_Sym *isym;
5327 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5332 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5333 if (s != NULL && s != sec)
5334 opd_sym_map[rel->r_offset / 8] = s;
5342 case R_PPC64_ADDR14:
5343 case R_PPC64_ADDR14_BRNTAKEN:
5344 case R_PPC64_ADDR14_BRTAKEN:
5345 case R_PPC64_ADDR16:
5346 case R_PPC64_ADDR16_DS:
5347 case R_PPC64_ADDR16_HA:
5348 case R_PPC64_ADDR16_HI:
5349 case R_PPC64_ADDR16_HIGHER:
5350 case R_PPC64_ADDR16_HIGHERA:
5351 case R_PPC64_ADDR16_HIGHEST:
5352 case R_PPC64_ADDR16_HIGHESTA:
5353 case R_PPC64_ADDR16_LO:
5354 case R_PPC64_ADDR16_LO_DS:
5355 case R_PPC64_ADDR24:
5356 case R_PPC64_ADDR32:
5357 case R_PPC64_UADDR16:
5358 case R_PPC64_UADDR32:
5359 case R_PPC64_UADDR64:
5361 if (h != NULL && !info->shared)
5362 /* We may need a copy reloc. */
5365 /* Don't propagate .opd relocs. */
5366 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5369 /* If we are creating a shared library, and this is a reloc
5370 against a global symbol, or a non PC relative reloc
5371 against a local symbol, then we need to copy the reloc
5372 into the shared library. However, if we are linking with
5373 -Bsymbolic, we do not need to copy a reloc against a
5374 global symbol which is defined in an object we are
5375 including in the link (i.e., DEF_REGULAR is set). At
5376 this point we have not seen all the input files, so it is
5377 possible that DEF_REGULAR is not set now but will be set
5378 later (it is never cleared). In case of a weak definition,
5379 DEF_REGULAR may be cleared later by a strong definition in
5380 a shared library. We account for that possibility below by
5381 storing information in the dyn_relocs field of the hash
5382 table entry. A similar situation occurs when creating
5383 shared libraries and symbol visibility changes render the
5386 If on the other hand, we are creating an executable, we
5387 may need to keep relocations for symbols satisfied by a
5388 dynamic library if we manage to avoid copy relocs for the
5392 && (must_be_dyn_reloc (info, r_type)
5394 && (! info->symbolic
5395 || h->root.type == bfd_link_hash_defweak
5396 || !h->def_regular))))
5397 || (ELIMINATE_COPY_RELOCS
5400 && (h->root.type == bfd_link_hash_defweak
5401 || !h->def_regular))
5405 struct ppc_dyn_relocs *p;
5406 struct ppc_dyn_relocs **head;
5408 /* We must copy these reloc types into the output file.
5409 Create a reloc section in dynobj and make room for
5413 sreloc = _bfd_elf_make_dynamic_reloc_section
5414 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5420 /* If this is a global symbol, we count the number of
5421 relocations we need for this symbol. */
5424 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5428 /* Track dynamic relocs needed for local syms too.
5429 We really need local syms available to do this
5433 Elf_Internal_Sym *isym;
5435 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5440 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5444 vpp = &elf_section_data (s)->local_dynrel;
5445 head = (struct ppc_dyn_relocs **) vpp;
5449 if (p == NULL || p->sec != sec)
5451 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5462 if (!must_be_dyn_reloc (info, r_type))
5475 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5476 of the code entry point, and its section. */
5479 opd_entry_value (asection *opd_sec,
5481 asection **code_sec,
5484 bfd *opd_bfd = opd_sec->owner;
5485 Elf_Internal_Rela *relocs;
5486 Elf_Internal_Rela *lo, *hi, *look;
5489 /* No relocs implies we are linking a --just-symbols object. */
5490 if (opd_sec->reloc_count == 0)
5494 if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8))
5495 return (bfd_vma) -1;
5497 val = bfd_get_64 (opd_bfd, buf);
5498 if (code_sec != NULL)
5500 asection *sec, *likely = NULL;
5501 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5503 && (sec->flags & SEC_LOAD) != 0
5504 && (sec->flags & SEC_ALLOC) != 0)
5509 if (code_off != NULL)
5510 *code_off = val - likely->vma;
5516 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5518 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5520 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5522 /* Go find the opd reloc at the sym address. */
5524 BFD_ASSERT (lo != NULL);
5525 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5529 look = lo + (hi - lo) / 2;
5530 if (look->r_offset < offset)
5532 else if (look->r_offset > offset)
5536 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5538 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5539 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5541 unsigned long symndx = ELF64_R_SYM (look->r_info);
5544 if (symndx < symtab_hdr->sh_info)
5546 Elf_Internal_Sym *sym;
5548 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5551 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5552 symtab_hdr->sh_info,
5553 0, NULL, NULL, NULL);
5556 symtab_hdr->contents = (bfd_byte *) sym;
5560 val = sym->st_value;
5561 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5562 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5566 struct elf_link_hash_entry **sym_hashes;
5567 struct elf_link_hash_entry *rh;
5569 sym_hashes = elf_sym_hashes (opd_bfd);
5570 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5571 rh = elf_follow_link (rh);
5572 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5573 || rh->root.type == bfd_link_hash_defweak);
5574 val = rh->root.u.def.value;
5575 sec = rh->root.u.def.section;
5577 val += look->r_addend;
5578 if (code_off != NULL)
5580 if (code_sec != NULL)
5582 if (sec != NULL && sec->output_section != NULL)
5583 val += sec->output_section->vma + sec->output_offset;
5592 /* Return true if symbol is defined in a regular object file. */
5595 is_static_defined (struct elf_link_hash_entry *h)
5597 return ((h->root.type == bfd_link_hash_defined
5598 || h->root.type == bfd_link_hash_defweak)
5599 && h->root.u.def.section != NULL
5600 && h->root.u.def.section->output_section != NULL);
5603 /* If FDH is a function descriptor symbol, return the associated code
5604 entry symbol if it is defined. Return NULL otherwise. */
5606 static struct ppc_link_hash_entry *
5607 defined_code_entry (struct ppc_link_hash_entry *fdh)
5609 if (fdh->is_func_descriptor)
5611 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5612 if (fh->elf.root.type == bfd_link_hash_defined
5613 || fh->elf.root.type == bfd_link_hash_defweak)
5619 /* If FH is a function code entry symbol, return the associated
5620 function descriptor symbol if it is defined. Return NULL otherwise. */
5622 static struct ppc_link_hash_entry *
5623 defined_func_desc (struct ppc_link_hash_entry *fh)
5626 && fh->oh->is_func_descriptor)
5628 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5629 if (fdh->elf.root.type == bfd_link_hash_defined
5630 || fdh->elf.root.type == bfd_link_hash_defweak)
5636 /* Mark all our entry sym sections, both opd and code section. */
5639 ppc64_elf_gc_keep (struct bfd_link_info *info)
5641 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5642 struct bfd_sym_chain *sym;
5647 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5649 struct ppc_link_hash_entry *eh, *fh;
5652 eh = (struct ppc_link_hash_entry *)
5653 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5656 if (eh->elf.root.type != bfd_link_hash_defined
5657 && eh->elf.root.type != bfd_link_hash_defweak)
5660 fh = defined_code_entry (eh);
5663 sec = fh->elf.root.u.def.section;
5664 sec->flags |= SEC_KEEP;
5666 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5667 && opd_entry_value (eh->elf.root.u.def.section,
5668 eh->elf.root.u.def.value,
5669 &sec, NULL) != (bfd_vma) -1)
5670 sec->flags |= SEC_KEEP;
5672 sec = eh->elf.root.u.def.section;
5673 sec->flags |= SEC_KEEP;
5677 /* Mark sections containing dynamically referenced symbols. When
5678 building shared libraries, we must assume that any visible symbol is
5682 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5684 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5685 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5686 struct ppc_link_hash_entry *fdh;
5688 if (eh->elf.root.type == bfd_link_hash_warning)
5689 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5691 /* Dynamic linking info is on the func descriptor sym. */
5692 fdh = defined_func_desc (eh);
5696 if ((eh->elf.root.type == bfd_link_hash_defined
5697 || eh->elf.root.type == bfd_link_hash_defweak)
5698 && (eh->elf.ref_dynamic
5699 || (!info->executable
5700 && eh->elf.def_regular
5701 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5702 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5705 struct ppc_link_hash_entry *fh;
5707 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5709 /* Function descriptor syms cause the associated
5710 function code sym section to be marked. */
5711 fh = defined_code_entry (eh);
5714 code_sec = fh->elf.root.u.def.section;
5715 code_sec->flags |= SEC_KEEP;
5717 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5718 && opd_entry_value (eh->elf.root.u.def.section,
5719 eh->elf.root.u.def.value,
5720 &code_sec, NULL) != (bfd_vma) -1)
5721 code_sec->flags |= SEC_KEEP;
5727 /* Return the section that should be marked against GC for a given
5731 ppc64_elf_gc_mark_hook (asection *sec,
5732 struct bfd_link_info *info,
5733 Elf_Internal_Rela *rel,
5734 struct elf_link_hash_entry *h,
5735 Elf_Internal_Sym *sym)
5739 /* Syms return NULL if we're marking .opd, so we avoid marking all
5740 function sections, as all functions are referenced in .opd. */
5742 if (get_opd_info (sec) != NULL)
5747 enum elf_ppc64_reloc_type r_type;
5748 struct ppc_link_hash_entry *eh, *fh, *fdh;
5750 r_type = ELF64_R_TYPE (rel->r_info);
5753 case R_PPC64_GNU_VTINHERIT:
5754 case R_PPC64_GNU_VTENTRY:
5758 switch (h->root.type)
5760 case bfd_link_hash_defined:
5761 case bfd_link_hash_defweak:
5762 eh = (struct ppc_link_hash_entry *) h;
5763 fdh = defined_func_desc (eh);
5767 /* Function descriptor syms cause the associated
5768 function code sym section to be marked. */
5769 fh = defined_code_entry (eh);
5772 /* They also mark their opd section. */
5773 eh->elf.root.u.def.section->gc_mark = 1;
5775 rsec = fh->elf.root.u.def.section;
5777 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5778 && opd_entry_value (eh->elf.root.u.def.section,
5779 eh->elf.root.u.def.value,
5780 &rsec, NULL) != (bfd_vma) -1)
5781 eh->elf.root.u.def.section->gc_mark = 1;
5783 rsec = h->root.u.def.section;
5786 case bfd_link_hash_common:
5787 rsec = h->root.u.c.p->section;
5791 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5797 struct _opd_sec_data *opd;
5799 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5800 opd = get_opd_info (rsec);
5801 if (opd != NULL && opd->func_sec != NULL)
5805 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5812 /* Update the .got, .plt. and dynamic reloc reference counts for the
5813 section being removed. */
5816 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5817 asection *sec, const Elf_Internal_Rela *relocs)
5819 struct ppc_link_hash_table *htab;
5820 Elf_Internal_Shdr *symtab_hdr;
5821 struct elf_link_hash_entry **sym_hashes;
5822 struct got_entry **local_got_ents;
5823 const Elf_Internal_Rela *rel, *relend;
5825 if (info->relocatable)
5828 if ((sec->flags & SEC_ALLOC) == 0)
5831 elf_section_data (sec)->local_dynrel = NULL;
5833 htab = ppc_hash_table (info);
5837 symtab_hdr = &elf_symtab_hdr (abfd);
5838 sym_hashes = elf_sym_hashes (abfd);
5839 local_got_ents = elf_local_got_ents (abfd);
5841 relend = relocs + sec->reloc_count;
5842 for (rel = relocs; rel < relend; rel++)
5844 unsigned long r_symndx;
5845 enum elf_ppc64_reloc_type r_type;
5846 struct elf_link_hash_entry *h = NULL;
5847 unsigned char tls_type = 0;
5849 r_symndx = ELF64_R_SYM (rel->r_info);
5850 r_type = ELF64_R_TYPE (rel->r_info);
5851 if (r_symndx >= symtab_hdr->sh_info)
5853 struct ppc_link_hash_entry *eh;
5854 struct ppc_dyn_relocs **pp;
5855 struct ppc_dyn_relocs *p;
5857 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5858 h = elf_follow_link (h);
5859 eh = (struct ppc_link_hash_entry *) h;
5861 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5864 /* Everything must go for SEC. */
5870 if (is_branch_reloc (r_type))
5872 struct plt_entry **ifunc = NULL;
5875 if (h->type == STT_GNU_IFUNC)
5876 ifunc = &h->plt.plist;
5878 else if (local_got_ents != NULL)
5880 struct plt_entry **local_plt = (struct plt_entry **)
5881 (local_got_ents + symtab_hdr->sh_info);
5882 unsigned char *local_got_tls_masks = (unsigned char *)
5883 (local_plt + symtab_hdr->sh_info);
5884 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5885 ifunc = local_plt + r_symndx;
5889 struct plt_entry *ent;
5891 for (ent = *ifunc; ent != NULL; ent = ent->next)
5892 if (ent->addend == rel->r_addend)
5896 if (ent->plt.refcount > 0)
5897 ent->plt.refcount -= 1;
5904 case R_PPC64_GOT_TLSLD16:
5905 case R_PPC64_GOT_TLSLD16_LO:
5906 case R_PPC64_GOT_TLSLD16_HI:
5907 case R_PPC64_GOT_TLSLD16_HA:
5908 tls_type = TLS_TLS | TLS_LD;
5911 case R_PPC64_GOT_TLSGD16:
5912 case R_PPC64_GOT_TLSGD16_LO:
5913 case R_PPC64_GOT_TLSGD16_HI:
5914 case R_PPC64_GOT_TLSGD16_HA:
5915 tls_type = TLS_TLS | TLS_GD;
5918 case R_PPC64_GOT_TPREL16_DS:
5919 case R_PPC64_GOT_TPREL16_LO_DS:
5920 case R_PPC64_GOT_TPREL16_HI:
5921 case R_PPC64_GOT_TPREL16_HA:
5922 tls_type = TLS_TLS | TLS_TPREL;
5925 case R_PPC64_GOT_DTPREL16_DS:
5926 case R_PPC64_GOT_DTPREL16_LO_DS:
5927 case R_PPC64_GOT_DTPREL16_HI:
5928 case R_PPC64_GOT_DTPREL16_HA:
5929 tls_type = TLS_TLS | TLS_DTPREL;
5933 case R_PPC64_GOT16_DS:
5934 case R_PPC64_GOT16_HA:
5935 case R_PPC64_GOT16_HI:
5936 case R_PPC64_GOT16_LO:
5937 case R_PPC64_GOT16_LO_DS:
5940 struct got_entry *ent;
5945 ent = local_got_ents[r_symndx];
5947 for (; ent != NULL; ent = ent->next)
5948 if (ent->addend == rel->r_addend
5949 && ent->owner == abfd
5950 && ent->tls_type == tls_type)
5954 if (ent->got.refcount > 0)
5955 ent->got.refcount -= 1;
5959 case R_PPC64_PLT16_HA:
5960 case R_PPC64_PLT16_HI:
5961 case R_PPC64_PLT16_LO:
5965 case R_PPC64_REL14_BRNTAKEN:
5966 case R_PPC64_REL14_BRTAKEN:
5970 struct plt_entry *ent;
5972 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5973 if (ent->addend == rel->r_addend)
5975 if (ent != NULL && ent->plt.refcount > 0)
5976 ent->plt.refcount -= 1;
5987 /* The maximum size of .sfpr. */
5988 #define SFPR_MAX (218*4)
5990 struct sfpr_def_parms
5992 const char name[12];
5993 unsigned char lo, hi;
5994 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5995 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5998 /* Auto-generate _save*, _rest* functions in .sfpr. */
6001 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6003 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6005 size_t len = strlen (parm->name);
6006 bfd_boolean writing = FALSE;
6012 memcpy (sym, parm->name, len);
6015 for (i = parm->lo; i <= parm->hi; i++)
6017 struct elf_link_hash_entry *h;
6019 sym[len + 0] = i / 10 + '0';
6020 sym[len + 1] = i % 10 + '0';
6021 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6025 h->root.type = bfd_link_hash_defined;
6026 h->root.u.def.section = htab->sfpr;
6027 h->root.u.def.value = htab->sfpr->size;
6030 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6032 if (htab->sfpr->contents == NULL)
6034 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6035 if (htab->sfpr->contents == NULL)
6041 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6043 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6045 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6046 htab->sfpr->size = p - htab->sfpr->contents;
6054 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6056 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6061 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6063 p = savegpr0 (abfd, p, r);
6064 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6066 bfd_put_32 (abfd, BLR, p);
6071 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6073 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6078 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6080 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6082 p = restgpr0 (abfd, p, r);
6083 bfd_put_32 (abfd, MTLR_R0, p);
6087 p = restgpr0 (abfd, p, 30);
6088 p = restgpr0 (abfd, p, 31);
6090 bfd_put_32 (abfd, BLR, p);
6095 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6097 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6102 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6104 p = savegpr1 (abfd, p, r);
6105 bfd_put_32 (abfd, BLR, p);
6110 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6112 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6117 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6119 p = restgpr1 (abfd, p, r);
6120 bfd_put_32 (abfd, BLR, p);
6125 savefpr (bfd *abfd, bfd_byte *p, int r)
6127 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6132 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6134 p = savefpr (abfd, p, r);
6135 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6137 bfd_put_32 (abfd, BLR, p);
6142 restfpr (bfd *abfd, bfd_byte *p, int r)
6144 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6149 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6151 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6153 p = restfpr (abfd, p, r);
6154 bfd_put_32 (abfd, MTLR_R0, p);
6158 p = restfpr (abfd, p, 30);
6159 p = restfpr (abfd, p, 31);
6161 bfd_put_32 (abfd, BLR, p);
6166 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6168 p = savefpr (abfd, p, r);
6169 bfd_put_32 (abfd, BLR, p);
6174 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6176 p = restfpr (abfd, p, r);
6177 bfd_put_32 (abfd, BLR, p);
6182 savevr (bfd *abfd, bfd_byte *p, int r)
6184 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6186 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6191 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6193 p = savevr (abfd, p, r);
6194 bfd_put_32 (abfd, BLR, p);
6199 restvr (bfd *abfd, bfd_byte *p, int r)
6201 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6203 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6208 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6210 p = restvr (abfd, p, r);
6211 bfd_put_32 (abfd, BLR, p);
6215 /* Called via elf_link_hash_traverse to transfer dynamic linking
6216 information on function code symbol entries to their corresponding
6217 function descriptor symbol entries. */
6220 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6222 struct bfd_link_info *info;
6223 struct ppc_link_hash_table *htab;
6224 struct plt_entry *ent;
6225 struct ppc_link_hash_entry *fh;
6226 struct ppc_link_hash_entry *fdh;
6227 bfd_boolean force_local;
6229 fh = (struct ppc_link_hash_entry *) h;
6230 if (fh->elf.root.type == bfd_link_hash_indirect)
6233 if (fh->elf.root.type == bfd_link_hash_warning)
6234 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
6237 htab = ppc_hash_table (info);
6241 /* Resolve undefined references to dot-symbols as the value
6242 in the function descriptor, if we have one in a regular object.
6243 This is to satisfy cases like ".quad .foo". Calls to functions
6244 in dynamic objects are handled elsewhere. */
6245 if (fh->elf.root.type == bfd_link_hash_undefweak
6246 && fh->was_undefined
6247 && (fdh = defined_func_desc (fh)) != NULL
6248 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6249 && opd_entry_value (fdh->elf.root.u.def.section,
6250 fdh->elf.root.u.def.value,
6251 &fh->elf.root.u.def.section,
6252 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6254 fh->elf.root.type = fdh->elf.root.type;
6255 fh->elf.forced_local = 1;
6256 fh->elf.def_regular = fdh->elf.def_regular;
6257 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6260 /* If this is a function code symbol, transfer dynamic linking
6261 information to the function descriptor symbol. */
6265 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6266 if (ent->plt.refcount > 0)
6269 || fh->elf.root.root.string[0] != '.'
6270 || fh->elf.root.root.string[1] == '\0')
6273 /* Find the corresponding function descriptor symbol. Create it
6274 as undefined if necessary. */
6276 fdh = lookup_fdh (fh, htab);
6278 && !info->executable
6279 && (fh->elf.root.type == bfd_link_hash_undefined
6280 || fh->elf.root.type == bfd_link_hash_undefweak))
6282 fdh = make_fdh (info, fh);
6287 /* Fake function descriptors are made undefweak. If the function
6288 code symbol is strong undefined, make the fake sym the same.
6289 If the function code symbol is defined, then force the fake
6290 descriptor local; We can't support overriding of symbols in a
6291 shared library on a fake descriptor. */
6295 && fdh->elf.root.type == bfd_link_hash_undefweak)
6297 if (fh->elf.root.type == bfd_link_hash_undefined)
6299 fdh->elf.root.type = bfd_link_hash_undefined;
6300 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6302 else if (fh->elf.root.type == bfd_link_hash_defined
6303 || fh->elf.root.type == bfd_link_hash_defweak)
6305 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6310 && !fdh->elf.forced_local
6311 && (!info->executable
6312 || fdh->elf.def_dynamic
6313 || fdh->elf.ref_dynamic
6314 || (fdh->elf.root.type == bfd_link_hash_undefweak
6315 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6317 if (fdh->elf.dynindx == -1)
6318 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6320 fdh->elf.ref_regular |= fh->elf.ref_regular;
6321 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6322 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6323 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6324 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6326 move_plt_plist (fh, fdh);
6327 fdh->elf.needs_plt = 1;
6329 fdh->is_func_descriptor = 1;
6334 /* Now that the info is on the function descriptor, clear the
6335 function code sym info. Any function code syms for which we
6336 don't have a definition in a regular file, we force local.
6337 This prevents a shared library from exporting syms that have
6338 been imported from another library. Function code syms that
6339 are really in the library we must leave global to prevent the
6340 linker dragging in a definition from a static library. */
6341 force_local = (!fh->elf.def_regular
6343 || !fdh->elf.def_regular
6344 || fdh->elf.forced_local);
6345 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6350 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6351 this hook to a) provide some gcc support functions, and b) transfer
6352 dynamic linking information gathered so far on function code symbol
6353 entries, to their corresponding function descriptor symbol entries. */
6356 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6357 struct bfd_link_info *info)
6359 struct ppc_link_hash_table *htab;
6361 const struct sfpr_def_parms funcs[] =
6363 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6364 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6365 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6366 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6367 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6368 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6369 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6370 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6371 { "._savef", 14, 31, savefpr, savefpr1_tail },
6372 { "._restf", 14, 31, restfpr, restfpr1_tail },
6373 { "_savevr_", 20, 31, savevr, savevr_tail },
6374 { "_restvr_", 20, 31, restvr, restvr_tail }
6377 htab = ppc_hash_table (info);
6381 if (htab->sfpr == NULL)
6382 /* We don't have any relocs. */
6385 /* Provide any missing _save* and _rest* functions. */
6386 htab->sfpr->size = 0;
6387 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6388 if (!sfpr_define (info, &funcs[i]))
6391 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6393 if (htab->sfpr->size == 0)
6394 htab->sfpr->flags |= SEC_EXCLUDE;
6399 /* Adjust a symbol defined by a dynamic object and referenced by a
6400 regular object. The current definition is in some section of the
6401 dynamic object, but we're not including those sections. We have to
6402 change the definition to something the rest of the link can
6406 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6407 struct elf_link_hash_entry *h)
6409 struct ppc_link_hash_table *htab;
6412 htab = ppc_hash_table (info);
6416 /* Deal with function syms. */
6417 if (h->type == STT_FUNC
6418 || h->type == STT_GNU_IFUNC
6421 /* Clear procedure linkage table information for any symbol that
6422 won't need a .plt entry. */
6423 struct plt_entry *ent;
6424 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6425 if (ent->plt.refcount > 0)
6428 || (h->type != STT_GNU_IFUNC
6429 && (SYMBOL_CALLS_LOCAL (info, h)
6430 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6431 && h->root.type == bfd_link_hash_undefweak))))
6433 h->plt.plist = NULL;
6438 h->plt.plist = NULL;
6440 /* If this is a weak symbol, and there is a real definition, the
6441 processor independent code will have arranged for us to see the
6442 real definition first, and we can just use the same value. */
6443 if (h->u.weakdef != NULL)
6445 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6446 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6447 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6448 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6449 if (ELIMINATE_COPY_RELOCS)
6450 h->non_got_ref = h->u.weakdef->non_got_ref;
6454 /* If we are creating a shared library, we must presume that the
6455 only references to the symbol are via the global offset table.
6456 For such cases we need not do anything here; the relocations will
6457 be handled correctly by relocate_section. */
6461 /* If there are no references to this symbol that do not use the
6462 GOT, we don't need to generate a copy reloc. */
6463 if (!h->non_got_ref)
6466 /* Don't generate a copy reloc for symbols defined in the executable. */
6467 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6470 if (ELIMINATE_COPY_RELOCS)
6472 struct ppc_link_hash_entry * eh;
6473 struct ppc_dyn_relocs *p;
6475 eh = (struct ppc_link_hash_entry *) h;
6476 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6478 s = p->sec->output_section;
6479 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6483 /* If we didn't find any dynamic relocs in read-only sections, then
6484 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6492 if (h->plt.plist != NULL)
6494 /* We should never get here, but unfortunately there are versions
6495 of gcc out there that improperly (for this ABI) put initialized
6496 function pointers, vtable refs and suchlike in read-only
6497 sections. Allow them to proceed, but warn that this might
6498 break at runtime. */
6499 (*_bfd_error_handler)
6500 (_("copy reloc against `%s' requires lazy plt linking; "
6501 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6502 h->root.root.string);
6505 /* This is a reference to a symbol defined by a dynamic object which
6506 is not a function. */
6510 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
6511 h->root.root.string);
6515 /* We must allocate the symbol in our .dynbss section, which will
6516 become part of the .bss section of the executable. There will be
6517 an entry for this symbol in the .dynsym section. The dynamic
6518 object will contain position independent code, so all references
6519 from the dynamic object to this symbol will go through the global
6520 offset table. The dynamic linker will use the .dynsym entry to
6521 determine the address it must put in the global offset table, so
6522 both the dynamic object and the regular object will refer to the
6523 same memory location for the variable. */
6525 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6526 to copy the initial value out of the dynamic object and into the
6527 runtime process image. We need to remember the offset into the
6528 .rela.bss section we are going to use. */
6529 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
6531 htab->relbss->size += sizeof (Elf64_External_Rela);
6537 return _bfd_elf_adjust_dynamic_copy (h, s);
6540 /* If given a function descriptor symbol, hide both the function code
6541 sym and the descriptor. */
6543 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6544 struct elf_link_hash_entry *h,
6545 bfd_boolean force_local)
6547 struct ppc_link_hash_entry *eh;
6548 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6550 eh = (struct ppc_link_hash_entry *) h;
6551 if (eh->is_func_descriptor)
6553 struct ppc_link_hash_entry *fh = eh->oh;
6558 struct ppc_link_hash_table *htab;
6561 /* We aren't supposed to use alloca in BFD because on
6562 systems which do not have alloca the version in libiberty
6563 calls xmalloc, which might cause the program to crash
6564 when it runs out of memory. This function doesn't have a
6565 return status, so there's no way to gracefully return an
6566 error. So cheat. We know that string[-1] can be safely
6567 accessed; It's either a string in an ELF string table,
6568 or allocated in an objalloc structure. */
6570 p = eh->elf.root.root.string - 1;
6573 htab = ppc_hash_table (info);
6577 fh = (struct ppc_link_hash_entry *)
6578 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6581 /* Unfortunately, if it so happens that the string we were
6582 looking for was allocated immediately before this string,
6583 then we overwrote the string terminator. That's the only
6584 reason the lookup should fail. */
6587 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6588 while (q >= eh->elf.root.root.string && *q == *p)
6590 if (q < eh->elf.root.root.string && *p == '.')
6591 fh = (struct ppc_link_hash_entry *)
6592 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6601 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6606 get_sym_h (struct elf_link_hash_entry **hp,
6607 Elf_Internal_Sym **symp,
6609 unsigned char **tls_maskp,
6610 Elf_Internal_Sym **locsymsp,
6611 unsigned long r_symndx,
6614 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6616 if (r_symndx >= symtab_hdr->sh_info)
6618 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6619 struct elf_link_hash_entry *h;
6621 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6622 h = elf_follow_link (h);
6630 if (symsecp != NULL)
6632 asection *symsec = NULL;
6633 if (h->root.type == bfd_link_hash_defined
6634 || h->root.type == bfd_link_hash_defweak)
6635 symsec = h->root.u.def.section;
6639 if (tls_maskp != NULL)
6641 struct ppc_link_hash_entry *eh;
6643 eh = (struct ppc_link_hash_entry *) h;
6644 *tls_maskp = &eh->tls_mask;
6649 Elf_Internal_Sym *sym;
6650 Elf_Internal_Sym *locsyms = *locsymsp;
6652 if (locsyms == NULL)
6654 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6655 if (locsyms == NULL)
6656 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6657 symtab_hdr->sh_info,
6658 0, NULL, NULL, NULL);
6659 if (locsyms == NULL)
6661 *locsymsp = locsyms;
6663 sym = locsyms + r_symndx;
6671 if (symsecp != NULL)
6672 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6674 if (tls_maskp != NULL)
6676 struct got_entry **lgot_ents;
6677 unsigned char *tls_mask;
6680 lgot_ents = elf_local_got_ents (ibfd);
6681 if (lgot_ents != NULL)
6683 struct plt_entry **local_plt = (struct plt_entry **)
6684 (lgot_ents + symtab_hdr->sh_info);
6685 unsigned char *lgot_masks = (unsigned char *)
6686 (local_plt + symtab_hdr->sh_info);
6687 tls_mask = &lgot_masks[r_symndx];
6689 *tls_maskp = tls_mask;
6695 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6696 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6697 type suitable for optimization, and 1 otherwise. */
6700 get_tls_mask (unsigned char **tls_maskp,
6701 unsigned long *toc_symndx,
6702 bfd_vma *toc_addend,
6703 Elf_Internal_Sym **locsymsp,
6704 const Elf_Internal_Rela *rel,
6707 unsigned long r_symndx;
6709 struct elf_link_hash_entry *h;
6710 Elf_Internal_Sym *sym;
6714 r_symndx = ELF64_R_SYM (rel->r_info);
6715 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6718 if ((*tls_maskp != NULL && **tls_maskp != 0)
6720 || ppc64_elf_section_data (sec) == NULL
6721 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6724 /* Look inside a TOC section too. */
6727 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6728 off = h->root.u.def.value;
6731 off = sym->st_value;
6732 off += rel->r_addend;
6733 BFD_ASSERT (off % 8 == 0);
6734 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6735 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6736 if (toc_symndx != NULL)
6737 *toc_symndx = r_symndx;
6738 if (toc_addend != NULL)
6739 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6740 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6742 if ((h == NULL || is_static_defined (h))
6743 && (next_r == -1 || next_r == -2))
6748 /* Adjust all global syms defined in opd sections. In gcc generated
6749 code for the old ABI, these will already have been done. */
6752 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6754 struct ppc_link_hash_entry *eh;
6756 struct _opd_sec_data *opd;
6758 if (h->root.type == bfd_link_hash_indirect)
6761 if (h->root.type == bfd_link_hash_warning)
6762 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6764 if (h->root.type != bfd_link_hash_defined
6765 && h->root.type != bfd_link_hash_defweak)
6768 eh = (struct ppc_link_hash_entry *) h;
6769 if (eh->adjust_done)
6772 sym_sec = eh->elf.root.u.def.section;
6773 opd = get_opd_info (sym_sec);
6774 if (opd != NULL && opd->adjust != NULL)
6776 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6779 /* This entry has been deleted. */
6780 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6783 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6784 if (elf_discarded_section (dsec))
6786 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6790 eh->elf.root.u.def.value = 0;
6791 eh->elf.root.u.def.section = dsec;
6794 eh->elf.root.u.def.value += adjust;
6795 eh->adjust_done = 1;
6800 /* Handles decrementing dynamic reloc counts for the reloc specified by
6801 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6802 have already been determined. */
6805 dec_dynrel_count (bfd_vma r_info,
6807 struct bfd_link_info *info,
6808 Elf_Internal_Sym **local_syms,
6809 struct elf_link_hash_entry *h,
6812 enum elf_ppc64_reloc_type r_type;
6813 struct ppc_dyn_relocs *p;
6814 struct ppc_dyn_relocs **pp;
6816 /* Can this reloc be dynamic? This switch, and later tests here
6817 should be kept in sync with the code in check_relocs. */
6818 r_type = ELF64_R_TYPE (r_info);
6824 case R_PPC64_TPREL16:
6825 case R_PPC64_TPREL16_LO:
6826 case R_PPC64_TPREL16_HI:
6827 case R_PPC64_TPREL16_HA:
6828 case R_PPC64_TPREL16_DS:
6829 case R_PPC64_TPREL16_LO_DS:
6830 case R_PPC64_TPREL16_HIGHER:
6831 case R_PPC64_TPREL16_HIGHERA:
6832 case R_PPC64_TPREL16_HIGHEST:
6833 case R_PPC64_TPREL16_HIGHESTA:
6837 case R_PPC64_TPREL64:
6838 case R_PPC64_DTPMOD64:
6839 case R_PPC64_DTPREL64:
6840 case R_PPC64_ADDR64:
6844 case R_PPC64_ADDR14:
6845 case R_PPC64_ADDR14_BRNTAKEN:
6846 case R_PPC64_ADDR14_BRTAKEN:
6847 case R_PPC64_ADDR16:
6848 case R_PPC64_ADDR16_DS:
6849 case R_PPC64_ADDR16_HA:
6850 case R_PPC64_ADDR16_HI:
6851 case R_PPC64_ADDR16_HIGHER:
6852 case R_PPC64_ADDR16_HIGHERA:
6853 case R_PPC64_ADDR16_HIGHEST:
6854 case R_PPC64_ADDR16_HIGHESTA:
6855 case R_PPC64_ADDR16_LO:
6856 case R_PPC64_ADDR16_LO_DS:
6857 case R_PPC64_ADDR24:
6858 case R_PPC64_ADDR32:
6859 case R_PPC64_UADDR16:
6860 case R_PPC64_UADDR32:
6861 case R_PPC64_UADDR64:
6866 if (local_syms != NULL)
6868 unsigned long r_symndx;
6869 Elf_Internal_Sym *sym;
6870 bfd *ibfd = sec->owner;
6872 r_symndx = ELF64_R_SYM (r_info);
6873 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6878 && (must_be_dyn_reloc (info, r_type)
6881 || h->root.type == bfd_link_hash_defweak
6882 || !h->def_regular))))
6883 || (ELIMINATE_COPY_RELOCS
6886 && (h->root.type == bfd_link_hash_defweak
6887 || !h->def_regular)))
6893 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6896 if (sym_sec != NULL)
6898 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6899 pp = (struct ppc_dyn_relocs **) vpp;
6903 void *vpp = &elf_section_data (sec)->local_dynrel;
6904 pp = (struct ppc_dyn_relocs **) vpp;
6907 /* elf_gc_sweep may have already removed all dyn relocs associated
6908 with local syms for a given section. Don't report a dynreloc
6914 while ((p = *pp) != NULL)
6918 if (!must_be_dyn_reloc (info, r_type))
6928 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6930 bfd_set_error (bfd_error_bad_value);
6934 /* Remove unused Official Procedure Descriptor entries. Currently we
6935 only remove those associated with functions in discarded link-once
6936 sections, or weakly defined functions that have been overridden. It
6937 would be possible to remove many more entries for statically linked
6941 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
6944 bfd_boolean some_edited = FALSE;
6945 asection *need_pad = NULL;
6947 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6950 Elf_Internal_Rela *relstart, *rel, *relend;
6951 Elf_Internal_Shdr *symtab_hdr;
6952 Elf_Internal_Sym *local_syms;
6954 struct _opd_sec_data *opd;
6955 bfd_boolean need_edit, add_aux_fields;
6956 bfd_size_type cnt_16b = 0;
6958 if (!is_ppc64_elf (ibfd))
6961 sec = bfd_get_section_by_name (ibfd, ".opd");
6962 if (sec == NULL || sec->size == 0)
6965 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6968 if (sec->output_section == bfd_abs_section_ptr)
6971 /* Look through the section relocs. */
6972 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6976 symtab_hdr = &elf_symtab_hdr (ibfd);
6978 /* Read the relocations. */
6979 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6981 if (relstart == NULL)
6984 /* First run through the relocs to check they are sane, and to
6985 determine whether we need to edit this opd section. */
6989 relend = relstart + sec->reloc_count;
6990 for (rel = relstart; rel < relend; )
6992 enum elf_ppc64_reloc_type r_type;
6993 unsigned long r_symndx;
6995 struct elf_link_hash_entry *h;
6996 Elf_Internal_Sym *sym;
6998 /* .opd contains a regular array of 16 or 24 byte entries. We're
6999 only interested in the reloc pointing to a function entry
7001 if (rel->r_offset != offset
7002 || rel + 1 >= relend
7003 || (rel + 1)->r_offset != offset + 8)
7005 /* If someone messes with .opd alignment then after a
7006 "ld -r" we might have padding in the middle of .opd.
7007 Also, there's nothing to prevent someone putting
7008 something silly in .opd with the assembler. No .opd
7009 optimization for them! */
7011 (*_bfd_error_handler)
7012 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7017 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7018 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7020 (*_bfd_error_handler)
7021 (_("%B: unexpected reloc type %u in .opd section"),
7027 r_symndx = ELF64_R_SYM (rel->r_info);
7028 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7032 if (sym_sec == NULL || sym_sec->owner == NULL)
7034 const char *sym_name;
7036 sym_name = h->root.root.string;
7038 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7041 (*_bfd_error_handler)
7042 (_("%B: undefined sym `%s' in .opd section"),
7048 /* opd entries are always for functions defined in the
7049 current input bfd. If the symbol isn't defined in the
7050 input bfd, then we won't be using the function in this
7051 bfd; It must be defined in a linkonce section in another
7052 bfd, or is weak. It's also possible that we are
7053 discarding the function due to a linker script /DISCARD/,
7054 which we test for via the output_section. */
7055 if (sym_sec->owner != ibfd
7056 || sym_sec->output_section == bfd_abs_section_ptr)
7061 || (rel + 1 == relend && rel->r_offset == offset + 16))
7063 if (sec->size == offset + 24)
7068 if (rel == relend && sec->size == offset + 16)
7076 if (rel->r_offset == offset + 24)
7078 else if (rel->r_offset != offset + 16)
7080 else if (rel + 1 < relend
7081 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7082 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7087 else if (rel + 2 < relend
7088 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7089 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7098 add_aux_fields = non_overlapping && cnt_16b > 0;
7100 if (need_edit || add_aux_fields)
7102 Elf_Internal_Rela *write_rel;
7103 Elf_Internal_Shdr *rel_hdr;
7104 bfd_byte *rptr, *wptr;
7105 bfd_byte *new_contents;
7110 new_contents = NULL;
7111 amt = sec->size * sizeof (long) / 8;
7112 opd = &ppc64_elf_section_data (sec)->u.opd;
7113 opd->adjust = bfd_zalloc (sec->owner, amt);
7114 if (opd->adjust == NULL)
7116 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7118 /* This seems a waste of time as input .opd sections are all
7119 zeros as generated by gcc, but I suppose there's no reason
7120 this will always be so. We might start putting something in
7121 the third word of .opd entries. */
7122 if ((sec->flags & SEC_IN_MEMORY) == 0)
7125 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7130 if (local_syms != NULL
7131 && symtab_hdr->contents != (unsigned char *) local_syms)
7133 if (elf_section_data (sec)->relocs != relstart)
7137 sec->contents = loc;
7138 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7141 elf_section_data (sec)->relocs = relstart;
7143 new_contents = sec->contents;
7146 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7147 if (new_contents == NULL)
7151 wptr = new_contents;
7152 rptr = sec->contents;
7154 write_rel = relstart;
7158 for (rel = relstart; rel < relend; rel++)
7160 unsigned long r_symndx;
7162 struct elf_link_hash_entry *h;
7163 Elf_Internal_Sym *sym;
7165 r_symndx = ELF64_R_SYM (rel->r_info);
7166 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7170 if (rel->r_offset == offset)
7172 struct ppc_link_hash_entry *fdh = NULL;
7174 /* See if the .opd entry is full 24 byte or
7175 16 byte (with fd_aux entry overlapped with next
7178 if ((rel + 2 == relend && sec->size == offset + 16)
7179 || (rel + 3 < relend
7180 && rel[2].r_offset == offset + 16
7181 && rel[3].r_offset == offset + 24
7182 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7183 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7187 && h->root.root.string[0] == '.')
7189 struct ppc_link_hash_table *htab;
7191 htab = ppc_hash_table (info);
7193 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7196 && fdh->elf.root.type != bfd_link_hash_defined
7197 && fdh->elf.root.type != bfd_link_hash_defweak)
7201 skip = (sym_sec->owner != ibfd
7202 || sym_sec->output_section == bfd_abs_section_ptr);
7205 if (fdh != NULL && sym_sec->owner == ibfd)
7207 /* Arrange for the function descriptor sym
7209 fdh->elf.root.u.def.value = 0;
7210 fdh->elf.root.u.def.section = sym_sec;
7212 opd->adjust[rel->r_offset / 8] = -1;
7216 /* We'll be keeping this opd entry. */
7220 /* Redefine the function descriptor symbol to
7221 this location in the opd section. It is
7222 necessary to update the value here rather
7223 than using an array of adjustments as we do
7224 for local symbols, because various places
7225 in the generic ELF code use the value
7226 stored in u.def.value. */
7227 fdh->elf.root.u.def.value = wptr - new_contents;
7228 fdh->adjust_done = 1;
7231 /* Local syms are a bit tricky. We could
7232 tweak them as they can be cached, but
7233 we'd need to look through the local syms
7234 for the function descriptor sym which we
7235 don't have at the moment. So keep an
7236 array of adjustments. */
7237 opd->adjust[rel->r_offset / 8]
7238 = (wptr - new_contents) - (rptr - sec->contents);
7241 memcpy (wptr, rptr, opd_ent_size);
7242 wptr += opd_ent_size;
7243 if (add_aux_fields && opd_ent_size == 16)
7245 memset (wptr, '\0', 8);
7249 rptr += opd_ent_size;
7250 offset += opd_ent_size;
7256 && !info->relocatable
7257 && !dec_dynrel_count (rel->r_info, sec, info,
7263 /* We need to adjust any reloc offsets to point to the
7264 new opd entries. While we're at it, we may as well
7265 remove redundant relocs. */
7266 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7267 if (write_rel != rel)
7268 memcpy (write_rel, rel, sizeof (*rel));
7273 sec->size = wptr - new_contents;
7274 sec->reloc_count = write_rel - relstart;
7277 free (sec->contents);
7278 sec->contents = new_contents;
7281 /* Fudge the header size too, as this is used later in
7282 elf_bfd_final_link if we are emitting relocs. */
7283 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7284 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7287 else if (elf_section_data (sec)->relocs != relstart)
7290 if (local_syms != NULL
7291 && symtab_hdr->contents != (unsigned char *) local_syms)
7293 if (!info->keep_memory)
7296 symtab_hdr->contents = (unsigned char *) local_syms;
7301 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7303 /* If we are doing a final link and the last .opd entry is just 16 byte
7304 long, add a 8 byte padding after it. */
7305 if (need_pad != NULL && !info->relocatable)
7309 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7311 BFD_ASSERT (need_pad->size > 0);
7313 p = bfd_malloc (need_pad->size + 8);
7317 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7318 p, 0, need_pad->size))
7321 need_pad->contents = p;
7322 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7326 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7330 need_pad->contents = p;
7333 memset (need_pad->contents + need_pad->size, 0, 8);
7334 need_pad->size += 8;
7340 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7343 ppc64_elf_tls_setup (struct bfd_link_info *info,
7344 int no_tls_get_addr_opt,
7347 struct ppc_link_hash_table *htab;
7349 htab = ppc_hash_table (info);
7354 htab->do_multi_toc = 0;
7355 else if (!htab->do_multi_toc)
7358 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7359 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7360 FALSE, FALSE, TRUE));
7361 /* Move dynamic linking info to the function descriptor sym. */
7362 if (htab->tls_get_addr != NULL)
7363 func_desc_adjust (&htab->tls_get_addr->elf, info);
7364 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7365 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7366 FALSE, FALSE, TRUE));
7367 if (!no_tls_get_addr_opt)
7369 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7371 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7372 FALSE, FALSE, TRUE);
7374 func_desc_adjust (opt, info);
7375 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7376 FALSE, FALSE, TRUE);
7378 && (opt_fd->root.type == bfd_link_hash_defined
7379 || opt_fd->root.type == bfd_link_hash_defweak))
7381 /* If glibc supports an optimized __tls_get_addr call stub,
7382 signalled by the presence of __tls_get_addr_opt, and we'll
7383 be calling __tls_get_addr via a plt call stub, then
7384 make __tls_get_addr point to __tls_get_addr_opt. */
7385 tga_fd = &htab->tls_get_addr_fd->elf;
7386 if (htab->elf.dynamic_sections_created
7388 && (tga_fd->type == STT_FUNC
7389 || tga_fd->needs_plt)
7390 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7391 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7392 && tga_fd->root.type == bfd_link_hash_undefweak)))
7394 struct plt_entry *ent;
7396 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7397 if (ent->plt.refcount > 0)
7401 tga_fd->root.type = bfd_link_hash_indirect;
7402 tga_fd->root.u.i.link = &opt_fd->root;
7403 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7404 if (opt_fd->dynindx != -1)
7406 /* Use __tls_get_addr_opt in dynamic relocations. */
7407 opt_fd->dynindx = -1;
7408 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7409 opt_fd->dynstr_index);
7410 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7413 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7414 tga = &htab->tls_get_addr->elf;
7415 if (opt != NULL && tga != NULL)
7417 tga->root.type = bfd_link_hash_indirect;
7418 tga->root.u.i.link = &opt->root;
7419 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7420 _bfd_elf_link_hash_hide_symbol (info, opt,
7422 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7424 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7425 htab->tls_get_addr_fd->is_func_descriptor = 1;
7426 if (htab->tls_get_addr != NULL)
7428 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7429 htab->tls_get_addr->is_func = 1;
7435 no_tls_get_addr_opt = TRUE;
7437 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7438 return _bfd_elf_tls_setup (info->output_bfd, info);
7441 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7445 branch_reloc_hash_match (const bfd *ibfd,
7446 const Elf_Internal_Rela *rel,
7447 const struct ppc_link_hash_entry *hash1,
7448 const struct ppc_link_hash_entry *hash2)
7450 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7451 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7452 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7454 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7456 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7457 struct elf_link_hash_entry *h;
7459 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7460 h = elf_follow_link (h);
7461 if (h == &hash1->elf || h == &hash2->elf)
7467 /* Run through all the TLS relocs looking for optimization
7468 opportunities. The linker has been hacked (see ppc64elf.em) to do
7469 a preliminary section layout so that we know the TLS segment
7470 offsets. We can't optimize earlier because some optimizations need
7471 to know the tp offset, and we need to optimize before allocating
7472 dynamic relocations. */
7475 ppc64_elf_tls_optimize (struct bfd_link_info *info)
7479 struct ppc_link_hash_table *htab;
7480 unsigned char *toc_ref;
7483 if (info->relocatable || !info->executable)
7486 htab = ppc_hash_table (info);
7490 /* Make two passes over the relocs. On the first pass, mark toc
7491 entries involved with tls relocs, and check that tls relocs
7492 involved in setting up a tls_get_addr call are indeed followed by
7493 such a call. If they are not, we can't do any tls optimization.
7494 On the second pass twiddle tls_mask flags to notify
7495 relocate_section that optimization can be done, and adjust got
7496 and plt refcounts. */
7498 for (pass = 0; pass < 2; ++pass)
7499 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7501 Elf_Internal_Sym *locsyms = NULL;
7502 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7504 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7505 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7507 Elf_Internal_Rela *relstart, *rel, *relend;
7508 bfd_boolean found_tls_get_addr_arg = 0;
7510 /* Read the relocations. */
7511 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7513 if (relstart == NULL)
7516 relend = relstart + sec->reloc_count;
7517 for (rel = relstart; rel < relend; rel++)
7519 enum elf_ppc64_reloc_type r_type;
7520 unsigned long r_symndx;
7521 struct elf_link_hash_entry *h;
7522 Elf_Internal_Sym *sym;
7524 unsigned char *tls_mask;
7525 unsigned char tls_set, tls_clear, tls_type = 0;
7527 bfd_boolean ok_tprel, is_local;
7528 long toc_ref_index = 0;
7529 int expecting_tls_get_addr = 0;
7530 bfd_boolean ret = FALSE;
7532 r_symndx = ELF64_R_SYM (rel->r_info);
7533 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7537 if (elf_section_data (sec)->relocs != relstart)
7539 if (toc_ref != NULL)
7542 && (elf_symtab_hdr (ibfd).contents
7543 != (unsigned char *) locsyms))
7550 if (h->root.type == bfd_link_hash_defined
7551 || h->root.type == bfd_link_hash_defweak)
7552 value = h->root.u.def.value;
7553 else if (h->root.type == bfd_link_hash_undefweak)
7557 found_tls_get_addr_arg = 0;
7562 /* Symbols referenced by TLS relocs must be of type
7563 STT_TLS. So no need for .opd local sym adjust. */
7564 value = sym->st_value;
7573 && h->root.type == bfd_link_hash_undefweak)
7577 value += sym_sec->output_offset;
7578 value += sym_sec->output_section->vma;
7579 value -= htab->elf.tls_sec->vma;
7580 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7581 < (bfd_vma) 1 << 32);
7585 r_type = ELF64_R_TYPE (rel->r_info);
7586 /* If this section has old-style __tls_get_addr calls
7587 without marker relocs, then check that each
7588 __tls_get_addr call reloc is preceded by a reloc
7589 that conceivably belongs to the __tls_get_addr arg
7590 setup insn. If we don't find matching arg setup
7591 relocs, don't do any tls optimization. */
7593 && sec->has_tls_get_addr_call
7595 && (h == &htab->tls_get_addr->elf
7596 || h == &htab->tls_get_addr_fd->elf)
7597 && !found_tls_get_addr_arg
7598 && is_branch_reloc (r_type))
7600 info->callbacks->minfo (_("%C __tls_get_addr lost arg, "
7601 "TLS optimization disabled\n"),
7602 ibfd, sec, rel->r_offset);
7607 found_tls_get_addr_arg = 0;
7610 case R_PPC64_GOT_TLSLD16:
7611 case R_PPC64_GOT_TLSLD16_LO:
7612 expecting_tls_get_addr = 1;
7613 found_tls_get_addr_arg = 1;
7616 case R_PPC64_GOT_TLSLD16_HI:
7617 case R_PPC64_GOT_TLSLD16_HA:
7618 /* These relocs should never be against a symbol
7619 defined in a shared lib. Leave them alone if
7620 that turns out to be the case. */
7627 tls_type = TLS_TLS | TLS_LD;
7630 case R_PPC64_GOT_TLSGD16:
7631 case R_PPC64_GOT_TLSGD16_LO:
7632 expecting_tls_get_addr = 1;
7633 found_tls_get_addr_arg = 1;
7636 case R_PPC64_GOT_TLSGD16_HI:
7637 case R_PPC64_GOT_TLSGD16_HA:
7643 tls_set = TLS_TLS | TLS_TPRELGD;
7645 tls_type = TLS_TLS | TLS_GD;
7648 case R_PPC64_GOT_TPREL16_DS:
7649 case R_PPC64_GOT_TPREL16_LO_DS:
7650 case R_PPC64_GOT_TPREL16_HI:
7651 case R_PPC64_GOT_TPREL16_HA:
7656 tls_clear = TLS_TPREL;
7657 tls_type = TLS_TLS | TLS_TPREL;
7664 found_tls_get_addr_arg = 1;
7669 case R_PPC64_TOC16_LO:
7670 if (sym_sec == NULL || sym_sec != toc)
7673 /* Mark this toc entry as referenced by a TLS
7674 code sequence. We can do that now in the
7675 case of R_PPC64_TLS, and after checking for
7676 tls_get_addr for the TOC16 relocs. */
7677 if (toc_ref == NULL)
7678 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
7679 if (toc_ref == NULL)
7683 value = h->root.u.def.value;
7685 value = sym->st_value;
7686 value += rel->r_addend;
7687 BFD_ASSERT (value < toc->size && value % 8 == 0);
7688 toc_ref_index = (value + toc->output_offset) / 8;
7689 if (r_type == R_PPC64_TLS
7690 || r_type == R_PPC64_TLSGD
7691 || r_type == R_PPC64_TLSLD)
7693 toc_ref[toc_ref_index] = 1;
7697 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7702 expecting_tls_get_addr = 2;
7705 case R_PPC64_TPREL64:
7709 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7714 tls_set = TLS_EXPLICIT;
7715 tls_clear = TLS_TPREL;
7720 case R_PPC64_DTPMOD64:
7724 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
7726 if (rel + 1 < relend
7728 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7729 && rel[1].r_offset == rel->r_offset + 8)
7733 tls_set = TLS_EXPLICIT | TLS_GD;
7736 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7745 tls_set = TLS_EXPLICIT;
7756 if (!expecting_tls_get_addr
7757 || !sec->has_tls_get_addr_call)
7760 if (rel + 1 < relend
7761 && branch_reloc_hash_match (ibfd, rel + 1,
7763 htab->tls_get_addr_fd))
7765 if (expecting_tls_get_addr == 2)
7767 /* Check for toc tls entries. */
7768 unsigned char *toc_tls;
7771 retval = get_tls_mask (&toc_tls, NULL, NULL,
7776 if (toc_tls != NULL)
7778 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
7779 found_tls_get_addr_arg = 1;
7781 toc_ref[toc_ref_index] = 1;
7787 if (expecting_tls_get_addr != 1)
7790 /* Uh oh, we didn't find the expected call. We
7791 could just mark this symbol to exclude it
7792 from tls optimization but it's safer to skip
7793 the entire optimization. */
7794 info->callbacks->minfo (_("%C arg lost __tls_get_addr, "
7795 "TLS optimization disabled\n"),
7796 ibfd, sec, rel->r_offset);
7801 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7803 struct plt_entry *ent;
7804 for (ent = htab->tls_get_addr->elf.plt.plist;
7807 if (ent->addend == 0)
7809 if (ent->plt.refcount > 0)
7811 ent->plt.refcount -= 1;
7812 expecting_tls_get_addr = 0;
7818 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7820 struct plt_entry *ent;
7821 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7824 if (ent->addend == 0)
7826 if (ent->plt.refcount > 0)
7827 ent->plt.refcount -= 1;
7835 if ((tls_set & TLS_EXPLICIT) == 0)
7837 struct got_entry *ent;
7839 /* Adjust got entry for this reloc. */
7843 ent = elf_local_got_ents (ibfd)[r_symndx];
7845 for (; ent != NULL; ent = ent->next)
7846 if (ent->addend == rel->r_addend
7847 && ent->owner == ibfd
7848 && ent->tls_type == tls_type)
7855 /* We managed to get rid of a got entry. */
7856 if (ent->got.refcount > 0)
7857 ent->got.refcount -= 1;
7862 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7863 we'll lose one or two dyn relocs. */
7864 if (!dec_dynrel_count (rel->r_info, sec, info,
7868 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7870 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7876 *tls_mask |= tls_set;
7877 *tls_mask &= ~tls_clear;
7880 if (elf_section_data (sec)->relocs != relstart)
7885 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
7887 if (!info->keep_memory)
7890 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
7894 if (toc_ref != NULL)
7899 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7900 the values of any global symbols in a toc section that has been
7901 edited. Globals in toc sections should be a rarity, so this function
7902 sets a flag if any are found in toc sections other than the one just
7903 edited, so that futher hash table traversals can be avoided. */
7905 struct adjust_toc_info
7908 unsigned long *skip;
7909 bfd_boolean global_toc_syms;
7912 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
7915 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7917 struct ppc_link_hash_entry *eh;
7918 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7921 if (h->root.type == bfd_link_hash_indirect)
7924 if (h->root.type == bfd_link_hash_warning)
7925 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7927 if (h->root.type != bfd_link_hash_defined
7928 && h->root.type != bfd_link_hash_defweak)
7931 eh = (struct ppc_link_hash_entry *) h;
7932 if (eh->adjust_done)
7935 if (eh->elf.root.u.def.section == toc_inf->toc)
7937 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
7938 i = toc_inf->toc->rawsize >> 3;
7940 i = eh->elf.root.u.def.value >> 3;
7942 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
7944 (*_bfd_error_handler)
7945 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
7948 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
7949 eh->elf.root.u.def.value = (bfd_vma) i << 3;
7952 eh->elf.root.u.def.value -= toc_inf->skip[i];
7953 eh->adjust_done = 1;
7955 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7956 toc_inf->global_toc_syms = TRUE;
7961 /* Examine all relocs referencing .toc sections in order to remove
7962 unused .toc entries. */
7965 ppc64_elf_edit_toc (struct bfd_link_info *info)
7968 struct adjust_toc_info toc_inf;
7969 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7971 htab->do_toc_opt = 1;
7972 toc_inf.global_toc_syms = TRUE;
7973 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7975 asection *toc, *sec;
7976 Elf_Internal_Shdr *symtab_hdr;
7977 Elf_Internal_Sym *local_syms;
7978 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
7979 unsigned long *skip, *drop;
7980 unsigned char *used;
7981 unsigned char *keep, last, some_unused;
7983 if (!is_ppc64_elf (ibfd))
7986 toc = bfd_get_section_by_name (ibfd, ".toc");
7989 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7990 || elf_discarded_section (toc))
7995 symtab_hdr = &elf_symtab_hdr (ibfd);
7997 /* Look at sections dropped from the final link. */
8000 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8002 if (sec->reloc_count == 0
8003 || !elf_discarded_section (sec)
8004 || get_opd_info (sec)
8005 || (sec->flags & SEC_ALLOC) == 0
8006 || (sec->flags & SEC_DEBUGGING) != 0)
8009 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8010 if (relstart == NULL)
8013 /* Run through the relocs to see which toc entries might be
8015 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8017 enum elf_ppc64_reloc_type r_type;
8018 unsigned long r_symndx;
8020 struct elf_link_hash_entry *h;
8021 Elf_Internal_Sym *sym;
8024 r_type = ELF64_R_TYPE (rel->r_info);
8031 case R_PPC64_TOC16_LO:
8032 case R_PPC64_TOC16_HI:
8033 case R_PPC64_TOC16_HA:
8034 case R_PPC64_TOC16_DS:
8035 case R_PPC64_TOC16_LO_DS:
8039 r_symndx = ELF64_R_SYM (rel->r_info);
8040 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8048 val = h->root.u.def.value;
8050 val = sym->st_value;
8051 val += rel->r_addend;
8053 if (val >= toc->size)
8056 /* Anything in the toc ought to be aligned to 8 bytes.
8057 If not, don't mark as unused. */
8063 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8068 skip[val >> 3] = ref_from_discarded;
8071 if (elf_section_data (sec)->relocs != relstart)
8075 /* For largetoc loads of address constants, we can convert
8076 . addis rx,2,addr@got@ha
8077 . ld ry,addr@got@l(rx)
8079 . addis rx,2,addr@toc@ha
8080 . addi ry,rx,addr@toc@l
8081 when addr is within 2G of the toc pointer. This then means
8082 that the word storing "addr" in the toc is no longer needed. */
8084 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8085 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8086 && toc->reloc_count != 0)
8088 /* Read toc relocs. */
8089 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8091 if (toc_relocs == NULL)
8094 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8096 enum elf_ppc64_reloc_type r_type;
8097 unsigned long r_symndx;
8099 struct elf_link_hash_entry *h;
8100 Elf_Internal_Sym *sym;
8103 r_type = ELF64_R_TYPE (rel->r_info);
8104 if (r_type != R_PPC64_ADDR64)
8107 r_symndx = ELF64_R_SYM (rel->r_info);
8108 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8113 || elf_discarded_section (sym_sec))
8116 if (!SYMBOL_CALLS_LOCAL (info, h))
8121 if (h->type == STT_GNU_IFUNC)
8123 val = h->root.u.def.value;
8127 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8129 val = sym->st_value;
8131 val += rel->r_addend;
8132 val += sym_sec->output_section->vma + sym_sec->output_offset;
8134 /* We don't yet know the exact toc pointer value, but we
8135 know it will be somewhere in the toc section. Don't
8136 optimize if the difference from any possible toc
8137 pointer is outside [ff..f80008000, 7fff7fff]. */
8138 addr = toc->output_section->vma + TOC_BASE_OFF;
8139 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8142 addr = toc->output_section->vma + toc->output_section->rawsize;
8143 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8148 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8153 skip[rel->r_offset >> 3]
8154 |= can_optimize | ((rel - toc_relocs) << 2);
8161 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8165 if (local_syms != NULL
8166 && symtab_hdr->contents != (unsigned char *) local_syms)
8170 && elf_section_data (sec)->relocs != relstart)
8172 if (toc_relocs != NULL
8173 && elf_section_data (toc)->relocs != toc_relocs)
8180 /* Now check all kept sections that might reference the toc.
8181 Check the toc itself last. */
8182 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8185 sec = (sec == toc ? NULL
8186 : sec->next == NULL ? toc
8187 : sec->next == toc && toc->next ? toc->next
8192 if (sec->reloc_count == 0
8193 || elf_discarded_section (sec)
8194 || get_opd_info (sec)
8195 || (sec->flags & SEC_ALLOC) == 0
8196 || (sec->flags & SEC_DEBUGGING) != 0)
8199 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8201 if (relstart == NULL)
8204 /* Mark toc entries referenced as used. */
8207 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8209 enum elf_ppc64_reloc_type r_type;
8210 unsigned long r_symndx;
8212 struct elf_link_hash_entry *h;
8213 Elf_Internal_Sym *sym;
8216 r_type = ELF64_R_TYPE (rel->r_info);
8220 case R_PPC64_TOC16_LO:
8221 case R_PPC64_TOC16_HI:
8222 case R_PPC64_TOC16_HA:
8223 case R_PPC64_TOC16_DS:
8224 case R_PPC64_TOC16_LO_DS:
8225 /* In case we're taking addresses of toc entries. */
8226 case R_PPC64_ADDR64:
8233 r_symndx = ELF64_R_SYM (rel->r_info);
8234 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8245 val = h->root.u.def.value;
8247 val = sym->st_value;
8248 val += rel->r_addend;
8250 if (val >= toc->size)
8253 if ((skip[val >> 3] & can_optimize) != 0)
8260 case R_PPC64_TOC16_HA:
8263 case R_PPC64_TOC16_LO_DS:
8264 off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3);
8265 if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1))
8267 if ((opc & (0x3f << 2)) == (58u << 2))
8272 /* Wrong sort of reloc, or not a ld. We may
8273 as well clear ref_from_discarded too. */
8278 /* For the toc section, we only mark as used if
8279 this entry itself isn't unused. */
8282 && (used[rel->r_offset >> 3]
8283 || !(skip[rel->r_offset >> 3] & ref_from_discarded)))
8284 /* Do all the relocs again, to catch reference
8292 if (elf_section_data (sec)->relocs != relstart)
8296 /* Merge the used and skip arrays. Assume that TOC
8297 doublewords not appearing as either used or unused belong
8298 to to an entry more than one doubleword in size. */
8299 for (drop = skip, keep = used, last = 0, some_unused = 0;
8300 drop < skip + (toc->size + 7) / 8;
8305 *drop &= ~ref_from_discarded;
8306 if ((*drop & can_optimize) != 0)
8313 last = ref_from_discarded;
8323 bfd_byte *contents, *src;
8325 Elf_Internal_Sym *sym;
8326 bfd_boolean local_toc_syms = FALSE;
8328 /* Shuffle the toc contents, and at the same time convert the
8329 skip array from booleans into offsets. */
8330 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8333 elf_section_data (toc)->this_hdr.contents = contents;
8335 for (src = contents, off = 0, drop = skip;
8336 src < contents + toc->size;
8339 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8344 memcpy (src - off, src, 8);
8348 toc->rawsize = toc->size;
8349 toc->size = src - contents - off;
8351 /* Adjust addends for relocs against the toc section sym,
8352 and optimize any accesses we can. */
8353 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8355 if (sec->reloc_count == 0
8356 || elf_discarded_section (sec))
8359 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8361 if (relstart == NULL)
8364 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8366 enum elf_ppc64_reloc_type r_type;
8367 unsigned long r_symndx;
8369 struct elf_link_hash_entry *h;
8372 r_type = ELF64_R_TYPE (rel->r_info);
8379 case R_PPC64_TOC16_LO:
8380 case R_PPC64_TOC16_HI:
8381 case R_PPC64_TOC16_HA:
8382 case R_PPC64_TOC16_DS:
8383 case R_PPC64_TOC16_LO_DS:
8384 case R_PPC64_ADDR64:
8388 r_symndx = ELF64_R_SYM (rel->r_info);
8389 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8397 val = h->root.u.def.value;
8400 val = sym->st_value;
8402 local_toc_syms = TRUE;
8405 val += rel->r_addend;
8407 if (val > toc->rawsize)
8409 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8411 else if ((skip[val >> 3] & can_optimize) != 0)
8413 Elf_Internal_Rela *tocrel
8414 = toc_relocs + (skip[val >> 3] >> 2);
8415 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8419 case R_PPC64_TOC16_HA:
8420 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8423 case R_PPC64_TOC16_LO_DS:
8424 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8430 rel->r_addend = tocrel->r_addend;
8431 elf_section_data (sec)->relocs = relstart;
8435 if (h != NULL || sym->st_value != 0)
8438 rel->r_addend -= skip[val >> 3];
8439 elf_section_data (sec)->relocs = relstart;
8442 if (elf_section_data (sec)->relocs != relstart)
8446 /* We shouldn't have local or global symbols defined in the TOC,
8447 but handle them anyway. */
8448 if (local_syms != NULL)
8449 for (sym = local_syms;
8450 sym < local_syms + symtab_hdr->sh_info;
8452 if (sym->st_value != 0
8453 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8457 if (sym->st_value > toc->rawsize)
8458 i = toc->rawsize >> 3;
8460 i = sym->st_value >> 3;
8462 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8465 (*_bfd_error_handler)
8466 (_("%s defined on removed toc entry"),
8467 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8470 while ((skip[i] & (ref_from_discarded | can_optimize)));
8471 sym->st_value = (bfd_vma) i << 3;
8474 sym->st_value -= skip[i];
8475 symtab_hdr->contents = (unsigned char *) local_syms;
8478 /* Adjust any global syms defined in this toc input section. */
8479 if (toc_inf.global_toc_syms)
8482 toc_inf.skip = skip;
8483 toc_inf.global_toc_syms = FALSE;
8484 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8488 if (toc->reloc_count != 0)
8490 Elf_Internal_Shdr *rel_hdr;
8491 Elf_Internal_Rela *wrel;
8494 /* Remove unused toc relocs, and adjust those we keep. */
8495 if (toc_relocs == NULL)
8496 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8498 if (toc_relocs == NULL)
8502 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8503 if ((skip[rel->r_offset >> 3]
8504 & (ref_from_discarded | can_optimize)) == 0)
8506 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8507 wrel->r_info = rel->r_info;
8508 wrel->r_addend = rel->r_addend;
8511 else if (!dec_dynrel_count (rel->r_info, toc, info,
8512 &local_syms, NULL, NULL))
8515 elf_section_data (toc)->relocs = toc_relocs;
8516 toc->reloc_count = wrel - toc_relocs;
8517 rel_hdr = _bfd_elf_single_rel_hdr (toc);
8518 sz = rel_hdr->sh_entsize;
8519 rel_hdr->sh_size = toc->reloc_count * sz;
8522 else if (toc_relocs != NULL
8523 && elf_section_data (toc)->relocs != toc_relocs)
8526 if (local_syms != NULL
8527 && symtab_hdr->contents != (unsigned char *) local_syms)
8529 if (!info->keep_memory)
8532 symtab_hdr->contents = (unsigned char *) local_syms;
8540 /* Return true iff input section I references the TOC using
8541 instructions limited to +/-32k offsets. */
8544 ppc64_elf_has_small_toc_reloc (asection *i)
8546 return (is_ppc64_elf (i->owner)
8547 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8550 /* Allocate space for one GOT entry. */
8553 allocate_got (struct elf_link_hash_entry *h,
8554 struct bfd_link_info *info,
8555 struct got_entry *gent)
8557 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8559 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8560 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8562 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8563 ? 2 : 1) * sizeof (Elf64_External_Rela);
8564 asection *got = ppc64_elf_tdata (gent->owner)->got;
8566 gent->got.offset = got->size;
8567 got->size += entsize;
8569 dyn = htab->elf.dynamic_sections_created;
8571 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8572 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8573 || h->root.type != bfd_link_hash_undefweak))
8575 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8576 relgot->size += rentsize;
8578 else if (h->type == STT_GNU_IFUNC)
8580 asection *relgot = htab->reliplt;
8581 relgot->size += rentsize;
8582 htab->got_reli_size += rentsize;
8586 /* This function merges got entries in the same toc group. */
8589 merge_got_entries (struct got_entry **pent)
8591 struct got_entry *ent, *ent2;
8593 for (ent = *pent; ent != NULL; ent = ent->next)
8594 if (!ent->is_indirect)
8595 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8596 if (!ent2->is_indirect
8597 && ent2->addend == ent->addend
8598 && ent2->tls_type == ent->tls_type
8599 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8601 ent2->is_indirect = TRUE;
8602 ent2->got.ent = ent;
8606 /* Allocate space in .plt, .got and associated reloc sections for
8610 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8612 struct bfd_link_info *info;
8613 struct ppc_link_hash_table *htab;
8615 struct ppc_link_hash_entry *eh;
8616 struct ppc_dyn_relocs *p;
8617 struct got_entry **pgent, *gent;
8619 if (h->root.type == bfd_link_hash_indirect)
8622 if (h->root.type == bfd_link_hash_warning)
8623 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8625 info = (struct bfd_link_info *) inf;
8626 htab = ppc_hash_table (info);
8630 if ((htab->elf.dynamic_sections_created
8632 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8633 || h->type == STT_GNU_IFUNC)
8635 struct plt_entry *pent;
8636 bfd_boolean doneone = FALSE;
8637 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8638 if (pent->plt.refcount > 0)
8640 if (!htab->elf.dynamic_sections_created
8641 || h->dynindx == -1)
8644 pent->plt.offset = s->size;
8645 s->size += PLT_ENTRY_SIZE;
8650 /* If this is the first .plt entry, make room for the special
8654 s->size += PLT_INITIAL_ENTRY_SIZE;
8656 pent->plt.offset = s->size;
8658 /* Make room for this entry. */
8659 s->size += PLT_ENTRY_SIZE;
8661 /* Make room for the .glink code. */
8664 s->size += GLINK_CALL_STUB_SIZE;
8665 /* We need bigger stubs past index 32767. */
8666 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8670 /* We also need to make an entry in the .rela.plt section. */
8673 s->size += sizeof (Elf64_External_Rela);
8677 pent->plt.offset = (bfd_vma) -1;
8680 h->plt.plist = NULL;
8686 h->plt.plist = NULL;
8690 eh = (struct ppc_link_hash_entry *) h;
8691 /* Run through the TLS GD got entries first if we're changing them
8693 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8694 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8695 if (gent->got.refcount > 0
8696 && (gent->tls_type & TLS_GD) != 0)
8698 /* This was a GD entry that has been converted to TPREL. If
8699 there happens to be a TPREL entry we can use that one. */
8700 struct got_entry *ent;
8701 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8702 if (ent->got.refcount > 0
8703 && (ent->tls_type & TLS_TPREL) != 0
8704 && ent->addend == gent->addend
8705 && ent->owner == gent->owner)
8707 gent->got.refcount = 0;
8711 /* If not, then we'll be using our own TPREL entry. */
8712 if (gent->got.refcount != 0)
8713 gent->tls_type = TLS_TLS | TLS_TPREL;
8716 /* Remove any list entry that won't generate a word in the GOT before
8717 we call merge_got_entries. Otherwise we risk merging to empty
8719 pgent = &h->got.glist;
8720 while ((gent = *pgent) != NULL)
8721 if (gent->got.refcount > 0)
8723 if ((gent->tls_type & TLS_LD) != 0
8726 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8727 *pgent = gent->next;
8730 pgent = &gent->next;
8733 *pgent = gent->next;
8735 if (!htab->do_multi_toc)
8736 merge_got_entries (&h->got.glist);
8738 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8739 if (!gent->is_indirect)
8741 /* Make sure this symbol is output as a dynamic symbol.
8742 Undefined weak syms won't yet be marked as dynamic,
8743 nor will all TLS symbols. */
8744 if (h->dynindx == -1
8746 && h->type != STT_GNU_IFUNC
8747 && htab->elf.dynamic_sections_created)
8749 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8753 if (!is_ppc64_elf (gent->owner))
8756 allocate_got (h, info, gent);
8759 if (eh->dyn_relocs == NULL
8760 || (!htab->elf.dynamic_sections_created
8761 && h->type != STT_GNU_IFUNC))
8764 /* In the shared -Bsymbolic case, discard space allocated for
8765 dynamic pc-relative relocs against symbols which turn out to be
8766 defined in regular objects. For the normal shared case, discard
8767 space for relocs that have become local due to symbol visibility
8772 /* Relocs that use pc_count are those that appear on a call insn,
8773 or certain REL relocs (see must_be_dyn_reloc) that can be
8774 generated via assembly. We want calls to protected symbols to
8775 resolve directly to the function rather than going via the plt.
8776 If people want function pointer comparisons to work as expected
8777 then they should avoid writing weird assembly. */
8778 if (SYMBOL_CALLS_LOCAL (info, h))
8780 struct ppc_dyn_relocs **pp;
8782 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
8784 p->count -= p->pc_count;
8793 /* Also discard relocs on undefined weak syms with non-default
8795 if (eh->dyn_relocs != NULL
8796 && h->root.type == bfd_link_hash_undefweak)
8798 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8799 eh->dyn_relocs = NULL;
8801 /* Make sure this symbol is output as a dynamic symbol.
8802 Undefined weak syms won't yet be marked as dynamic. */
8803 else if (h->dynindx == -1
8804 && !h->forced_local)
8806 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8811 else if (h->type == STT_GNU_IFUNC)
8813 if (!h->non_got_ref)
8814 eh->dyn_relocs = NULL;
8816 else if (ELIMINATE_COPY_RELOCS)
8818 /* For the non-shared case, discard space for relocs against
8819 symbols which turn out to need copy relocs or are not
8825 /* Make sure this symbol is output as a dynamic symbol.
8826 Undefined weak syms won't yet be marked as dynamic. */
8827 if (h->dynindx == -1
8828 && !h->forced_local)
8830 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8834 /* If that succeeded, we know we'll be keeping all the
8836 if (h->dynindx != -1)
8840 eh->dyn_relocs = NULL;
8845 /* Finally, allocate space. */
8846 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8848 asection *sreloc = elf_section_data (p->sec)->sreloc;
8849 if (!htab->elf.dynamic_sections_created)
8850 sreloc = htab->reliplt;
8851 sreloc->size += p->count * sizeof (Elf64_External_Rela);
8857 /* Find any dynamic relocs that apply to read-only sections. */
8860 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8862 struct ppc_link_hash_entry *eh;
8863 struct ppc_dyn_relocs *p;
8865 if (h->root.type == bfd_link_hash_warning)
8866 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8868 eh = (struct ppc_link_hash_entry *) h;
8869 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8871 asection *s = p->sec->output_section;
8873 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8875 struct bfd_link_info *info = inf;
8877 info->flags |= DF_TEXTREL;
8879 /* Not an error, just cut short the traversal. */
8886 /* Set the sizes of the dynamic sections. */
8889 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8890 struct bfd_link_info *info)
8892 struct ppc_link_hash_table *htab;
8897 struct got_entry *first_tlsld;
8899 htab = ppc_hash_table (info);
8903 dynobj = htab->elf.dynobj;
8907 if (htab->elf.dynamic_sections_created)
8909 /* Set the contents of the .interp section to the interpreter. */
8910 if (info->executable)
8912 s = bfd_get_section_by_name (dynobj, ".interp");
8915 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8916 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8920 /* Set up .got offsets for local syms, and space for local dynamic
8922 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8924 struct got_entry **lgot_ents;
8925 struct got_entry **end_lgot_ents;
8926 struct plt_entry **local_plt;
8927 struct plt_entry **end_local_plt;
8928 unsigned char *lgot_masks;
8929 bfd_size_type locsymcount;
8930 Elf_Internal_Shdr *symtab_hdr;
8933 if (!is_ppc64_elf (ibfd))
8936 for (s = ibfd->sections; s != NULL; s = s->next)
8938 struct ppc_dyn_relocs *p;
8940 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
8942 if (!bfd_is_abs_section (p->sec)
8943 && bfd_is_abs_section (p->sec->output_section))
8945 /* Input section has been discarded, either because
8946 it is a copy of a linkonce section or due to
8947 linker script /DISCARD/, so we'll be discarding
8950 else if (p->count != 0)
8952 srel = elf_section_data (p->sec)->sreloc;
8953 if (!htab->elf.dynamic_sections_created)
8954 srel = htab->reliplt;
8955 srel->size += p->count * sizeof (Elf64_External_Rela);
8956 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8957 info->flags |= DF_TEXTREL;
8962 lgot_ents = elf_local_got_ents (ibfd);
8966 symtab_hdr = &elf_symtab_hdr (ibfd);
8967 locsymcount = symtab_hdr->sh_info;
8968 end_lgot_ents = lgot_ents + locsymcount;
8969 local_plt = (struct plt_entry **) end_lgot_ents;
8970 end_local_plt = local_plt + locsymcount;
8971 lgot_masks = (unsigned char *) end_local_plt;
8972 s = ppc64_elf_tdata (ibfd)->got;
8973 srel = ppc64_elf_tdata (ibfd)->relgot;
8974 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
8976 struct got_entry **pent, *ent;
8979 while ((ent = *pent) != NULL)
8980 if (ent->got.refcount > 0)
8982 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
8984 ppc64_tlsld_got (ibfd)->got.refcount += 1;
8989 unsigned int num = 1;
8990 ent->got.offset = s->size;
8991 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
8995 srel->size += num * sizeof (Elf64_External_Rela);
8996 else if ((*lgot_masks & PLT_IFUNC) != 0)
8999 += num * sizeof (Elf64_External_Rela);
9001 += num * sizeof (Elf64_External_Rela);
9010 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9011 for (; local_plt < end_local_plt; ++local_plt)
9013 struct plt_entry *ent;
9015 for (ent = *local_plt; ent != NULL; ent = ent->next)
9016 if (ent->plt.refcount > 0)
9019 ent->plt.offset = s->size;
9020 s->size += PLT_ENTRY_SIZE;
9022 htab->reliplt->size += sizeof (Elf64_External_Rela);
9025 ent->plt.offset = (bfd_vma) -1;
9029 /* Allocate global sym .plt and .got entries, and space for global
9030 sym dynamic relocs. */
9031 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9034 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9036 struct got_entry *ent;
9038 if (!is_ppc64_elf (ibfd))
9041 ent = ppc64_tlsld_got (ibfd);
9042 if (ent->got.refcount > 0)
9044 if (!htab->do_multi_toc && first_tlsld != NULL)
9046 ent->is_indirect = TRUE;
9047 ent->got.ent = first_tlsld;
9051 if (first_tlsld == NULL)
9053 s = ppc64_elf_tdata (ibfd)->got;
9054 ent->got.offset = s->size;
9059 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9060 srel->size += sizeof (Elf64_External_Rela);
9065 ent->got.offset = (bfd_vma) -1;
9068 /* We now have determined the sizes of the various dynamic sections.
9069 Allocate memory for them. */
9071 for (s = dynobj->sections; s != NULL; s = s->next)
9073 if ((s->flags & SEC_LINKER_CREATED) == 0)
9076 if (s == htab->brlt || s == htab->relbrlt)
9077 /* These haven't been allocated yet; don't strip. */
9079 else if (s == htab->got
9083 || s == htab->dynbss)
9085 /* Strip this section if we don't need it; see the
9088 else if (CONST_STRNEQ (s->name, ".rela"))
9092 if (s != htab->relplt)
9095 /* We use the reloc_count field as a counter if we need
9096 to copy relocs into the output file. */
9102 /* It's not one of our sections, so don't allocate space. */
9108 /* If we don't need this section, strip it from the
9109 output file. This is mostly to handle .rela.bss and
9110 .rela.plt. We must create both sections in
9111 create_dynamic_sections, because they must be created
9112 before the linker maps input sections to output
9113 sections. The linker does that before
9114 adjust_dynamic_symbol is called, and it is that
9115 function which decides whether anything needs to go
9116 into these sections. */
9117 s->flags |= SEC_EXCLUDE;
9121 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9124 /* Allocate memory for the section contents. We use bfd_zalloc
9125 here in case unused entries are not reclaimed before the
9126 section's contents are written out. This should not happen,
9127 but this way if it does we get a R_PPC64_NONE reloc in .rela
9128 sections instead of garbage.
9129 We also rely on the section contents being zero when writing
9131 s->contents = bfd_zalloc (dynobj, s->size);
9132 if (s->contents == NULL)
9136 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9138 if (!is_ppc64_elf (ibfd))
9141 s = ppc64_elf_tdata (ibfd)->got;
9142 if (s != NULL && s != htab->got)
9145 s->flags |= SEC_EXCLUDE;
9148 s->contents = bfd_zalloc (ibfd, s->size);
9149 if (s->contents == NULL)
9153 s = ppc64_elf_tdata (ibfd)->relgot;
9157 s->flags |= SEC_EXCLUDE;
9160 s->contents = bfd_zalloc (ibfd, s->size);
9161 if (s->contents == NULL)
9169 if (htab->elf.dynamic_sections_created)
9171 /* Add some entries to the .dynamic section. We fill in the
9172 values later, in ppc64_elf_finish_dynamic_sections, but we
9173 must add the entries now so that we get the correct size for
9174 the .dynamic section. The DT_DEBUG entry is filled in by the
9175 dynamic linker and used by the debugger. */
9176 #define add_dynamic_entry(TAG, VAL) \
9177 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9179 if (info->executable)
9181 if (!add_dynamic_entry (DT_DEBUG, 0))
9185 if (htab->plt != NULL && htab->plt->size != 0)
9187 if (!add_dynamic_entry (DT_PLTGOT, 0)
9188 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9189 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9190 || !add_dynamic_entry (DT_JMPREL, 0)
9191 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9197 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9198 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9202 if (!htab->no_tls_get_addr_opt
9203 && htab->tls_get_addr_fd != NULL
9204 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9205 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9210 if (!add_dynamic_entry (DT_RELA, 0)
9211 || !add_dynamic_entry (DT_RELASZ, 0)
9212 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9215 /* If any dynamic relocs apply to a read-only section,
9216 then we need a DT_TEXTREL entry. */
9217 if ((info->flags & DF_TEXTREL) == 0)
9218 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
9220 if ((info->flags & DF_TEXTREL) != 0)
9222 if (!add_dynamic_entry (DT_TEXTREL, 0))
9227 #undef add_dynamic_entry
9232 /* Determine the type of stub needed, if any, for a call. */
9234 static inline enum ppc_stub_type
9235 ppc_type_of_stub (asection *input_sec,
9236 const Elf_Internal_Rela *rel,
9237 struct ppc_link_hash_entry **hash,
9238 struct plt_entry **plt_ent,
9239 bfd_vma destination)
9241 struct ppc_link_hash_entry *h = *hash;
9243 bfd_vma branch_offset;
9244 bfd_vma max_branch_offset;
9245 enum elf_ppc64_reloc_type r_type;
9249 struct plt_entry *ent;
9250 struct ppc_link_hash_entry *fdh = h;
9252 && h->oh->is_func_descriptor)
9254 fdh = ppc_follow_link (h->oh);
9258 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9259 if (ent->addend == rel->r_addend
9260 && ent->plt.offset != (bfd_vma) -1)
9263 return ppc_stub_plt_call;
9266 /* Here, we know we don't have a plt entry. If we don't have a
9267 either a defined function descriptor or a defined entry symbol
9268 in a regular object file, then it is pointless trying to make
9269 any other type of stub. */
9270 if (!is_static_defined (&fdh->elf)
9271 && !is_static_defined (&h->elf))
9272 return ppc_stub_none;
9274 else if (elf_local_got_ents (input_sec->owner) != NULL)
9276 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9277 struct plt_entry **local_plt = (struct plt_entry **)
9278 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9279 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9281 if (local_plt[r_symndx] != NULL)
9283 struct plt_entry *ent;
9285 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9286 if (ent->addend == rel->r_addend
9287 && ent->plt.offset != (bfd_vma) -1)
9290 return ppc_stub_plt_call;
9295 /* Determine where the call point is. */
9296 location = (input_sec->output_offset
9297 + input_sec->output_section->vma
9300 branch_offset = destination - location;
9301 r_type = ELF64_R_TYPE (rel->r_info);
9303 /* Determine if a long branch stub is needed. */
9304 max_branch_offset = 1 << 25;
9305 if (r_type != R_PPC64_REL24)
9306 max_branch_offset = 1 << 15;
9308 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9309 /* We need a stub. Figure out whether a long_branch or plt_branch
9311 return ppc_stub_long_branch;
9313 return ppc_stub_none;
9316 /* Build a .plt call stub. */
9318 static inline bfd_byte *
9319 build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r)
9321 #define PPC_LO(v) ((v) & 0xffff)
9322 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9323 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9325 if (PPC_HA (offset) != 0)
9329 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9330 r[1].r_offset = r[0].r_offset + 8;
9331 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9332 r[1].r_addend = r[0].r_addend;
9333 if (PPC_HA (offset + 16) != PPC_HA (offset))
9335 r[2].r_offset = r[1].r_offset + 4;
9336 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9337 r[2].r_addend = r[0].r_addend;
9341 r[2].r_offset = r[1].r_offset + 8;
9342 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9343 r[2].r_addend = r[0].r_addend + 8;
9344 r[3].r_offset = r[2].r_offset + 4;
9345 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9346 r[3].r_addend = r[0].r_addend + 16;
9349 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
9350 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9351 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9352 if (PPC_HA (offset + 16) != PPC_HA (offset))
9354 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9357 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9358 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9359 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9360 bfd_put_32 (obfd, BCTR, p), p += 4;
9367 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9368 if (PPC_HA (offset + 16) != PPC_HA (offset))
9370 r[1].r_offset = r[0].r_offset + 4;
9371 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9372 r[1].r_addend = r[0].r_addend;
9376 r[1].r_offset = r[0].r_offset + 8;
9377 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9378 r[1].r_addend = r[0].r_addend + 16;
9379 r[2].r_offset = r[1].r_offset + 4;
9380 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9381 r[2].r_addend = r[0].r_addend + 8;
9384 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9385 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9386 if (PPC_HA (offset + 16) != PPC_HA (offset))
9388 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9391 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9392 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9393 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9394 bfd_put_32 (obfd, BCTR, p), p += 4;
9399 /* Build a special .plt call stub for __tls_get_addr. */
9401 #define LD_R11_0R3 0xe9630000
9402 #define LD_R12_0R3 0xe9830000
9403 #define MR_R0_R3 0x7c601b78
9404 #define CMPDI_R11_0 0x2c2b0000
9405 #define ADD_R3_R12_R13 0x7c6c6a14
9406 #define BEQLR 0x4d820020
9407 #define MR_R3_R0 0x7c030378
9408 #define MFLR_R11 0x7d6802a6
9409 #define STD_R11_0R1 0xf9610000
9410 #define BCTRL 0x4e800421
9411 #define LD_R11_0R1 0xe9610000
9412 #define LD_R2_0R1 0xe8410000
9413 #define MTLR_R11 0x7d6803a6
9415 static inline bfd_byte *
9416 build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset,
9417 Elf_Internal_Rela *r)
9419 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9420 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9421 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9422 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9423 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9424 bfd_put_32 (obfd, BEQLR, p), p += 4;
9425 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9426 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9427 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9430 r[0].r_offset += 9 * 4;
9431 p = build_plt_stub (obfd, p, offset, r);
9432 bfd_put_32 (obfd, BCTRL, p - 4);
9434 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9435 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9436 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9437 bfd_put_32 (obfd, BLR, p), p += 4;
9442 static Elf_Internal_Rela *
9443 get_relocs (asection *sec, int count)
9445 Elf_Internal_Rela *relocs;
9446 struct bfd_elf_section_data *elfsec_data;
9448 elfsec_data = elf_section_data (sec);
9449 relocs = elfsec_data->relocs;
9452 bfd_size_type relsize;
9453 relsize = sec->reloc_count * sizeof (*relocs);
9454 relocs = bfd_alloc (sec->owner, relsize);
9457 elfsec_data->relocs = relocs;
9458 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
9459 sizeof (Elf_Internal_Shdr));
9460 if (elfsec_data->rela.hdr == NULL)
9462 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
9463 * sizeof (Elf64_External_Rela));
9464 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
9465 sec->reloc_count = 0;
9467 relocs += sec->reloc_count;
9468 sec->reloc_count += count;
9473 get_r2off (struct ppc_link_hash_table *htab,
9474 struct ppc_stub_hash_entry *stub_entry)
9476 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
9480 /* Support linking -R objects. Get the toc pointer from the
9483 asection *opd = stub_entry->h->elf.root.u.def.section;
9484 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
9486 if (strcmp (opd->name, ".opd") != 0
9487 || opd->reloc_count != 0)
9489 (*_bfd_error_handler) (_("cannot find opd entry toc for %s"),
9490 stub_entry->h->elf.root.root.string);
9491 bfd_set_error (bfd_error_bad_value);
9494 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
9496 r2off = bfd_get_64 (opd->owner, buf);
9497 r2off -= elf_gp (stub_entry->id_sec->output_section->owner);
9499 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
9504 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9506 struct ppc_stub_hash_entry *stub_entry;
9507 struct ppc_branch_hash_entry *br_entry;
9508 struct bfd_link_info *info;
9509 struct ppc_link_hash_table *htab;
9514 Elf_Internal_Rela *r;
9517 /* Massage our args to the form they really have. */
9518 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9521 htab = ppc_hash_table (info);
9525 /* Make a note of the offset within the stubs for this entry. */
9526 stub_entry->stub_offset = stub_entry->stub_sec->size;
9527 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9529 htab->stub_count[stub_entry->stub_type - 1] += 1;
9530 switch (stub_entry->stub_type)
9532 case ppc_stub_long_branch:
9533 case ppc_stub_long_branch_r2off:
9534 /* Branches are relative. This is where we are going to. */
9535 off = dest = (stub_entry->target_value
9536 + stub_entry->target_section->output_offset
9537 + stub_entry->target_section->output_section->vma);
9539 /* And this is where we are coming from. */
9540 off -= (stub_entry->stub_offset
9541 + stub_entry->stub_sec->output_offset
9542 + stub_entry->stub_sec->output_section->vma);
9545 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9547 bfd_vma r2off = get_r2off (htab, stub_entry);
9551 htab->stub_error = TRUE;
9554 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9557 if (PPC_HA (r2off) != 0)
9560 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9563 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9567 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9569 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9571 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
9572 stub_entry->root.string);
9573 htab->stub_error = TRUE;
9577 if (info->emitrelocations)
9579 r = get_relocs (stub_entry->stub_sec, 1);
9582 r->r_offset = loc - stub_entry->stub_sec->contents;
9583 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9585 if (stub_entry->h != NULL)
9587 struct elf_link_hash_entry **hashes;
9588 unsigned long symndx;
9589 struct ppc_link_hash_entry *h;
9591 hashes = elf_sym_hashes (htab->stub_bfd);
9594 bfd_size_type hsize;
9596 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9597 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9600 elf_sym_hashes (htab->stub_bfd) = hashes;
9601 htab->stub_globals = 1;
9603 symndx = htab->stub_globals++;
9605 hashes[symndx] = &h->elf;
9606 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9607 if (h->oh != NULL && h->oh->is_func)
9608 h = ppc_follow_link (h->oh);
9609 if (h->elf.root.u.def.section != stub_entry->target_section)
9610 /* H is an opd symbol. The addend must be zero. */
9614 off = (h->elf.root.u.def.value
9615 + h->elf.root.u.def.section->output_offset
9616 + h->elf.root.u.def.section->output_section->vma);
9623 case ppc_stub_plt_branch:
9624 case ppc_stub_plt_branch_r2off:
9625 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9626 stub_entry->root.string + 9,
9628 if (br_entry == NULL)
9630 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
9631 stub_entry->root.string);
9632 htab->stub_error = TRUE;
9636 dest = (stub_entry->target_value
9637 + stub_entry->target_section->output_offset
9638 + stub_entry->target_section->output_section->vma);
9640 bfd_put_64 (htab->brlt->owner, dest,
9641 htab->brlt->contents + br_entry->offset);
9643 if (br_entry->iter == htab->stub_iteration)
9647 if (htab->relbrlt != NULL)
9649 /* Create a reloc for the branch lookup table entry. */
9650 Elf_Internal_Rela rela;
9653 rela.r_offset = (br_entry->offset
9654 + htab->brlt->output_offset
9655 + htab->brlt->output_section->vma);
9656 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9657 rela.r_addend = dest;
9659 rl = htab->relbrlt->contents;
9660 rl += (htab->relbrlt->reloc_count++
9661 * sizeof (Elf64_External_Rela));
9662 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
9664 else if (info->emitrelocations)
9666 r = get_relocs (htab->brlt, 1);
9669 /* brlt, being SEC_LINKER_CREATED does not go through the
9670 normal reloc processing. Symbols and offsets are not
9671 translated from input file to output file form, so
9672 set up the offset per the output file. */
9673 r->r_offset = (br_entry->offset
9674 + htab->brlt->output_offset
9675 + htab->brlt->output_section->vma);
9676 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9681 dest = (br_entry->offset
9682 + htab->brlt->output_offset
9683 + htab->brlt->output_section->vma);
9686 - elf_gp (htab->brlt->output_section->owner)
9687 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9689 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9691 (*_bfd_error_handler)
9692 (_("linkage table error against `%s'"),
9693 stub_entry->root.string);
9694 bfd_set_error (bfd_error_bad_value);
9695 htab->stub_error = TRUE;
9699 if (info->emitrelocations)
9701 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
9704 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9705 if (bfd_big_endian (info->output_bfd))
9707 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
9709 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9710 r[0].r_addend = dest;
9711 if (PPC_HA (off) != 0)
9713 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9714 r[1].r_offset = r[0].r_offset + 4;
9715 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9716 r[1].r_addend = r[0].r_addend;
9720 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9722 if (PPC_HA (off) != 0)
9725 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9727 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9732 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9737 bfd_vma r2off = get_r2off (htab, stub_entry);
9741 htab->stub_error = TRUE;
9745 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9748 if (PPC_HA (off) != 0)
9751 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9753 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9758 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9762 if (PPC_HA (r2off) != 0)
9765 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9768 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9771 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
9773 bfd_put_32 (htab->stub_bfd, BCTR, loc);
9776 case ppc_stub_plt_call:
9777 if (stub_entry->h != NULL
9778 && stub_entry->h->is_func_descriptor
9779 && stub_entry->h->oh != NULL)
9781 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
9783 /* If the old-ABI "dot-symbol" is undefined make it weak so
9784 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9785 FIXME: We used to define the symbol on one of the call
9786 stubs instead, which is why we test symbol section id
9787 against htab->top_id in various places. Likely all
9788 these checks could now disappear. */
9789 if (fh->elf.root.type == bfd_link_hash_undefined)
9790 fh->elf.root.type = bfd_link_hash_undefweak;
9793 /* Now build the stub. */
9794 dest = stub_entry->plt_ent->plt.offset & ~1;
9795 if (dest >= (bfd_vma) -2)
9799 if (!htab->elf.dynamic_sections_created
9800 || stub_entry->h == NULL
9801 || stub_entry->h->elf.dynindx == -1)
9804 dest += plt->output_offset + plt->output_section->vma;
9806 if (stub_entry->h == NULL
9807 && (stub_entry->plt_ent->plt.offset & 1) == 0)
9809 Elf_Internal_Rela rela;
9812 rela.r_offset = dest;
9813 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
9814 rela.r_addend = (stub_entry->target_value
9815 + stub_entry->target_section->output_offset
9816 + stub_entry->target_section->output_section->vma);
9818 rl = (htab->reliplt->contents
9819 + (htab->reliplt->reloc_count++
9820 * sizeof (Elf64_External_Rela)));
9821 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
9822 stub_entry->plt_ent->plt.offset |= 1;
9826 - elf_gp (plt->output_section->owner)
9827 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9829 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9831 (*_bfd_error_handler)
9832 (_("linkage table error against `%s'"),
9833 stub_entry->h != NULL
9834 ? stub_entry->h->elf.root.root.string
9836 bfd_set_error (bfd_error_bad_value);
9837 htab->stub_error = TRUE;
9842 if (info->emitrelocations)
9844 r = get_relocs (stub_entry->stub_sec,
9845 (2 + (PPC_HA (off) != 0)
9846 + (PPC_HA (off + 16) == PPC_HA (off))));
9849 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9850 if (bfd_big_endian (info->output_bfd))
9852 r[0].r_addend = dest;
9854 if (stub_entry->h != NULL
9855 && (stub_entry->h == htab->tls_get_addr_fd
9856 || stub_entry->h == htab->tls_get_addr)
9857 && !htab->no_tls_get_addr_opt)
9858 p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r);
9860 p = build_plt_stub (htab->stub_bfd, loc, off, r);
9869 stub_entry->stub_sec->size += size;
9871 if (htab->emit_stub_syms)
9873 struct elf_link_hash_entry *h;
9876 const char *const stub_str[] = { "long_branch",
9877 "long_branch_r2off",
9882 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
9883 len2 = strlen (stub_entry->root.string);
9884 name = bfd_malloc (len1 + len2 + 2);
9887 memcpy (name, stub_entry->root.string, 9);
9888 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
9889 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
9890 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
9893 if (h->root.type == bfd_link_hash_new)
9895 h->root.type = bfd_link_hash_defined;
9896 h->root.u.def.section = stub_entry->stub_sec;
9897 h->root.u.def.value = stub_entry->stub_offset;
9900 h->ref_regular_nonweak = 1;
9901 h->forced_local = 1;
9909 /* As above, but don't actually build the stub. Just bump offset so
9910 we know stub section sizes, and select plt_branch stubs where
9911 long_branch stubs won't do. */
9914 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9916 struct ppc_stub_hash_entry *stub_entry;
9917 struct bfd_link_info *info;
9918 struct ppc_link_hash_table *htab;
9922 /* Massage our args to the form they really have. */
9923 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9926 htab = ppc_hash_table (info);
9930 if (stub_entry->stub_type == ppc_stub_plt_call)
9933 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
9934 if (off >= (bfd_vma) -2)
9937 if (!htab->elf.dynamic_sections_created
9938 || stub_entry->h == NULL
9939 || stub_entry->h->elf.dynindx == -1)
9941 off += (plt->output_offset
9942 + plt->output_section->vma
9943 - elf_gp (plt->output_section->owner)
9944 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9946 size = PLT_CALL_STUB_SIZE;
9947 if (PPC_HA (off) == 0)
9949 if (PPC_HA (off + 16) != PPC_HA (off))
9951 if (stub_entry->h != NULL
9952 && (stub_entry->h == htab->tls_get_addr_fd
9953 || stub_entry->h == htab->tls_get_addr)
9954 && !htab->no_tls_get_addr_opt)
9956 if (info->emitrelocations)
9958 stub_entry->stub_sec->reloc_count
9959 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
9960 stub_entry->stub_sec->flags |= SEC_RELOC;
9965 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9969 off = (stub_entry->target_value
9970 + stub_entry->target_section->output_offset
9971 + stub_entry->target_section->output_section->vma);
9972 off -= (stub_entry->stub_sec->size
9973 + stub_entry->stub_sec->output_offset
9974 + stub_entry->stub_sec->output_section->vma);
9976 /* Reset the stub type from the plt variant in case we now
9977 can reach with a shorter stub. */
9978 if (stub_entry->stub_type >= ppc_stub_plt_branch)
9979 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
9982 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9984 r2off = get_r2off (htab, stub_entry);
9987 htab->stub_error = TRUE;
9991 if (PPC_HA (r2off) != 0)
9996 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9997 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9999 struct ppc_branch_hash_entry *br_entry;
10001 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10002 stub_entry->root.string + 9,
10004 if (br_entry == NULL)
10006 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
10007 stub_entry->root.string);
10008 htab->stub_error = TRUE;
10012 if (br_entry->iter != htab->stub_iteration)
10014 br_entry->iter = htab->stub_iteration;
10015 br_entry->offset = htab->brlt->size;
10016 htab->brlt->size += 8;
10018 if (htab->relbrlt != NULL)
10019 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10020 else if (info->emitrelocations)
10022 htab->brlt->reloc_count += 1;
10023 htab->brlt->flags |= SEC_RELOC;
10027 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10028 off = (br_entry->offset
10029 + htab->brlt->output_offset
10030 + htab->brlt->output_section->vma
10031 - elf_gp (htab->brlt->output_section->owner)
10032 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10034 if (info->emitrelocations)
10036 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10037 stub_entry->stub_sec->flags |= SEC_RELOC;
10040 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10043 if (PPC_HA (off) != 0)
10049 if (PPC_HA (off) != 0)
10052 if (PPC_HA (r2off) != 0)
10056 else if (info->emitrelocations)
10058 stub_entry->stub_sec->reloc_count += 1;
10059 stub_entry->stub_sec->flags |= SEC_RELOC;
10063 stub_entry->stub_sec->size += size;
10067 /* Set up various things so that we can make a list of input sections
10068 for each output section included in the link. Returns -1 on error,
10069 0 when no stubs will be needed, and 1 on success. */
10072 ppc64_elf_setup_section_lists
10073 (struct bfd_link_info *info,
10074 asection *(*add_stub_section) (const char *, asection *),
10075 void (*layout_sections_again) (void))
10078 int top_id, top_index, id;
10080 asection **input_list;
10082 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10086 /* Stash our params away. */
10087 htab->add_stub_section = add_stub_section;
10088 htab->layout_sections_again = layout_sections_again;
10090 if (htab->brlt == NULL)
10093 /* Find the top input section id. */
10094 for (input_bfd = info->input_bfds, top_id = 3;
10096 input_bfd = input_bfd->link_next)
10098 for (section = input_bfd->sections;
10100 section = section->next)
10102 if (top_id < section->id)
10103 top_id = section->id;
10107 htab->top_id = top_id;
10108 amt = sizeof (struct map_stub) * (top_id + 1);
10109 htab->stub_group = bfd_zmalloc (amt);
10110 if (htab->stub_group == NULL)
10113 /* Set toc_off for com, und, abs and ind sections. */
10114 for (id = 0; id < 3; id++)
10115 htab->stub_group[id].toc_off = TOC_BASE_OFF;
10117 /* We can't use output_bfd->section_count here to find the top output
10118 section index as some sections may have been removed, and
10119 strip_excluded_output_sections doesn't renumber the indices. */
10120 for (section = info->output_bfd->sections, top_index = 0;
10122 section = section->next)
10124 if (top_index < section->index)
10125 top_index = section->index;
10128 htab->top_index = top_index;
10129 amt = sizeof (asection *) * (top_index + 1);
10130 input_list = bfd_zmalloc (amt);
10131 htab->input_list = input_list;
10132 if (input_list == NULL)
10138 /* Set up for first pass at multitoc partitioning. */
10141 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10143 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10145 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
10146 htab->toc_curr = elf_gp (info->output_bfd);
10147 htab->toc_bfd = NULL;
10148 htab->toc_first_sec = NULL;
10151 /* The linker repeatedly calls this function for each TOC input section
10152 and linker generated GOT section. Group input bfds such that the toc
10153 within a group is less than 64k in size. */
10156 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
10158 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10159 bfd_vma addr, off, limit;
10164 if (!htab->second_toc_pass)
10166 /* Keep track of the first .toc or .got section for this input bfd. */
10167 if (htab->toc_bfd != isec->owner)
10169 htab->toc_bfd = isec->owner;
10170 htab->toc_first_sec = isec;
10173 addr = isec->output_offset + isec->output_section->vma;
10174 off = addr - htab->toc_curr;
10175 limit = 0x80008000;
10176 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10178 if (off + isec->size > limit)
10180 addr = (htab->toc_first_sec->output_offset
10181 + htab->toc_first_sec->output_section->vma);
10182 htab->toc_curr = addr;
10185 /* toc_curr is the base address of this toc group. Set elf_gp
10186 for the input section to be the offset relative to the
10187 output toc base plus 0x8000. Making the input elf_gp an
10188 offset allows us to move the toc as a whole without
10189 recalculating input elf_gp. */
10190 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10191 off += TOC_BASE_OFF;
10193 /* Die if someone uses a linker script that doesn't keep input
10194 file .toc and .got together. */
10195 if (elf_gp (isec->owner) != 0
10196 && elf_gp (isec->owner) != off)
10199 elf_gp (isec->owner) = off;
10203 /* During the second pass toc_first_sec points to the start of
10204 a toc group, and toc_curr is used to track the old elf_gp.
10205 We use toc_bfd to ensure we only look at each bfd once. */
10206 if (htab->toc_bfd == isec->owner)
10208 htab->toc_bfd = isec->owner;
10210 if (htab->toc_first_sec == NULL
10211 || htab->toc_curr != elf_gp (isec->owner))
10213 htab->toc_curr = elf_gp (isec->owner);
10214 htab->toc_first_sec = isec;
10216 addr = (htab->toc_first_sec->output_offset
10217 + htab->toc_first_sec->output_section->vma);
10218 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10219 elf_gp (isec->owner) = off;
10224 /* Called via elf_link_hash_traverse to merge GOT entries for global
10228 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10230 if (h->root.type == bfd_link_hash_indirect)
10233 if (h->root.type == bfd_link_hash_warning)
10234 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10236 merge_got_entries (&h->got.glist);
10241 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10245 reallocate_got (struct elf_link_hash_entry *h, void *inf)
10247 struct got_entry *gent;
10249 if (h->root.type == bfd_link_hash_indirect)
10252 if (h->root.type == bfd_link_hash_warning)
10253 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10255 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10256 if (!gent->is_indirect)
10257 allocate_got (h, (struct bfd_link_info *) inf, gent);
10261 /* Called on the first multitoc pass after the last call to
10262 ppc64_elf_next_toc_section. This function removes duplicate GOT
10266 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
10268 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10269 struct bfd *ibfd, *ibfd2;
10270 bfd_boolean done_something;
10272 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
10274 if (!htab->do_multi_toc)
10277 /* Merge global sym got entries within a toc group. */
10278 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10280 /* And tlsld_got. */
10281 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10283 struct got_entry *ent, *ent2;
10285 if (!is_ppc64_elf (ibfd))
10288 ent = ppc64_tlsld_got (ibfd);
10289 if (!ent->is_indirect
10290 && ent->got.offset != (bfd_vma) -1)
10292 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10294 if (!is_ppc64_elf (ibfd2))
10297 ent2 = ppc64_tlsld_got (ibfd2);
10298 if (!ent2->is_indirect
10299 && ent2->got.offset != (bfd_vma) -1
10300 && elf_gp (ibfd2) == elf_gp (ibfd))
10302 ent2->is_indirect = TRUE;
10303 ent2->got.ent = ent;
10309 /* Zap sizes of got sections. */
10310 htab->reliplt->rawsize = htab->reliplt->size;
10311 htab->reliplt->size -= htab->got_reli_size;
10312 htab->got_reli_size = 0;
10314 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10316 asection *got, *relgot;
10318 if (!is_ppc64_elf (ibfd))
10321 got = ppc64_elf_tdata (ibfd)->got;
10324 got->rawsize = got->size;
10326 relgot = ppc64_elf_tdata (ibfd)->relgot;
10327 relgot->rawsize = relgot->size;
10332 /* Now reallocate the got, local syms first. We don't need to
10333 allocate section contents again since we never increase size. */
10334 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10336 struct got_entry **lgot_ents;
10337 struct got_entry **end_lgot_ents;
10338 struct plt_entry **local_plt;
10339 struct plt_entry **end_local_plt;
10340 unsigned char *lgot_masks;
10341 bfd_size_type locsymcount;
10342 Elf_Internal_Shdr *symtab_hdr;
10343 asection *s, *srel;
10345 if (!is_ppc64_elf (ibfd))
10348 lgot_ents = elf_local_got_ents (ibfd);
10352 symtab_hdr = &elf_symtab_hdr (ibfd);
10353 locsymcount = symtab_hdr->sh_info;
10354 end_lgot_ents = lgot_ents + locsymcount;
10355 local_plt = (struct plt_entry **) end_lgot_ents;
10356 end_local_plt = local_plt + locsymcount;
10357 lgot_masks = (unsigned char *) end_local_plt;
10358 s = ppc64_elf_tdata (ibfd)->got;
10359 srel = ppc64_elf_tdata (ibfd)->relgot;
10360 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10362 struct got_entry *ent;
10364 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10366 unsigned int num = 1;
10367 ent->got.offset = s->size;
10368 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10370 s->size += num * 8;
10372 srel->size += num * sizeof (Elf64_External_Rela);
10373 else if ((*lgot_masks & PLT_IFUNC) != 0)
10375 htab->reliplt->size
10376 += num * sizeof (Elf64_External_Rela);
10377 htab->got_reli_size
10378 += num * sizeof (Elf64_External_Rela);
10384 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10386 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10388 struct got_entry *ent;
10390 if (!is_ppc64_elf (ibfd))
10393 ent = ppc64_tlsld_got (ibfd);
10394 if (!ent->is_indirect
10395 && ent->got.offset != (bfd_vma) -1)
10397 asection *s = ppc64_elf_tdata (ibfd)->got;
10398 ent->got.offset = s->size;
10402 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10403 srel->size += sizeof (Elf64_External_Rela);
10408 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10409 if (!done_something)
10410 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10414 if (!is_ppc64_elf (ibfd))
10417 got = ppc64_elf_tdata (ibfd)->got;
10420 done_something = got->rawsize != got->size;
10421 if (done_something)
10426 if (done_something)
10427 (*htab->layout_sections_again) ();
10429 /* Set up for second pass over toc sections to recalculate elf_gp
10430 on input sections. */
10431 htab->toc_bfd = NULL;
10432 htab->toc_first_sec = NULL;
10433 htab->second_toc_pass = TRUE;
10434 return done_something;
10437 /* Called after second pass of multitoc partitioning. */
10440 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10442 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10444 /* After the second pass, toc_curr tracks the TOC offset used
10445 for code sections below in ppc64_elf_next_input_section. */
10446 htab->toc_curr = TOC_BASE_OFF;
10449 /* No toc references were found in ISEC. If the code in ISEC makes no
10450 calls, then there's no need to use toc adjusting stubs when branching
10451 into ISEC. Actually, indirect calls from ISEC are OK as they will
10452 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10453 needed, and 2 if a cyclical call-graph was found but no other reason
10454 for a stub was detected. If called from the top level, a return of
10455 2 means the same as a return of 0. */
10458 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10462 /* Mark this section as checked. */
10463 isec->call_check_done = 1;
10465 /* We know none of our code bearing sections will need toc stubs. */
10466 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10469 if (isec->size == 0)
10472 if (isec->output_section == NULL)
10476 if (isec->reloc_count != 0)
10478 Elf_Internal_Rela *relstart, *rel;
10479 Elf_Internal_Sym *local_syms;
10480 struct ppc_link_hash_table *htab;
10482 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10483 info->keep_memory);
10484 if (relstart == NULL)
10487 /* Look for branches to outside of this section. */
10489 htab = ppc_hash_table (info);
10493 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10495 enum elf_ppc64_reloc_type r_type;
10496 unsigned long r_symndx;
10497 struct elf_link_hash_entry *h;
10498 struct ppc_link_hash_entry *eh;
10499 Elf_Internal_Sym *sym;
10501 struct _opd_sec_data *opd;
10505 r_type = ELF64_R_TYPE (rel->r_info);
10506 if (r_type != R_PPC64_REL24
10507 && r_type != R_PPC64_REL14
10508 && r_type != R_PPC64_REL14_BRTAKEN
10509 && r_type != R_PPC64_REL14_BRNTAKEN)
10512 r_symndx = ELF64_R_SYM (rel->r_info);
10513 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10520 /* Calls to dynamic lib functions go through a plt call stub
10522 eh = (struct ppc_link_hash_entry *) h;
10524 && (eh->elf.plt.plist != NULL
10526 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10532 if (sym_sec == NULL)
10533 /* Ignore other undefined symbols. */
10536 /* Assume branches to other sections not included in the
10537 link need stubs too, to cover -R and absolute syms. */
10538 if (sym_sec->output_section == NULL)
10545 sym_value = sym->st_value;
10548 if (h->root.type != bfd_link_hash_defined
10549 && h->root.type != bfd_link_hash_defweak)
10551 sym_value = h->root.u.def.value;
10553 sym_value += rel->r_addend;
10555 /* If this branch reloc uses an opd sym, find the code section. */
10556 opd = get_opd_info (sym_sec);
10559 if (h == NULL && opd->adjust != NULL)
10563 adjust = opd->adjust[sym->st_value / 8];
10565 /* Assume deleted functions won't ever be called. */
10567 sym_value += adjust;
10570 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
10571 if (dest == (bfd_vma) -1)
10576 + sym_sec->output_offset
10577 + sym_sec->output_section->vma);
10579 /* Ignore branch to self. */
10580 if (sym_sec == isec)
10583 /* If the called function uses the toc, we need a stub. */
10584 if (sym_sec->has_toc_reloc
10585 || sym_sec->makes_toc_func_call)
10591 /* Assume any branch that needs a long branch stub might in fact
10592 need a plt_branch stub. A plt_branch stub uses r2. */
10593 else if (dest - (isec->output_offset
10594 + isec->output_section->vma
10595 + rel->r_offset) + (1 << 25) >= (2 << 25))
10601 /* If calling back to a section in the process of being
10602 tested, we can't say for sure that no toc adjusting stubs
10603 are needed, so don't return zero. */
10604 else if (sym_sec->call_check_in_progress)
10607 /* Branches to another section that itself doesn't have any TOC
10608 references are OK. Recursively call ourselves to check. */
10609 else if (!sym_sec->call_check_done)
10613 /* Mark current section as indeterminate, so that other
10614 sections that call back to current won't be marked as
10616 isec->call_check_in_progress = 1;
10617 recur = toc_adjusting_stub_needed (info, sym_sec);
10618 isec->call_check_in_progress = 0;
10629 if (local_syms != NULL
10630 && (elf_symtab_hdr (isec->owner).contents
10631 != (unsigned char *) local_syms))
10633 if (elf_section_data (isec)->relocs != relstart)
10638 && isec->map_head.s != NULL
10639 && (strcmp (isec->output_section->name, ".init") == 0
10640 || strcmp (isec->output_section->name, ".fini") == 0))
10642 if (isec->map_head.s->has_toc_reloc
10643 || isec->map_head.s->makes_toc_func_call)
10645 else if (!isec->map_head.s->call_check_done)
10648 isec->call_check_in_progress = 1;
10649 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
10650 isec->call_check_in_progress = 0;
10657 isec->makes_toc_func_call = 1;
10662 /* The linker repeatedly calls this function for each input section,
10663 in the order that input sections are linked into output sections.
10664 Build lists of input sections to determine groupings between which
10665 we may insert linker stubs. */
10668 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
10670 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10675 if ((isec->output_section->flags & SEC_CODE) != 0
10676 && isec->output_section->index <= htab->top_index)
10678 asection **list = htab->input_list + isec->output_section->index;
10679 /* Steal the link_sec pointer for our list. */
10680 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10681 /* This happens to make the list in reverse order,
10682 which is what we want. */
10683 PREV_SEC (isec) = *list;
10687 if (htab->multi_toc_needed)
10689 /* If a code section has a function that uses the TOC then we need
10690 to use the right TOC (obviously). Also, make sure that .opd gets
10691 the correct TOC value for R_PPC64_TOC relocs that don't have or
10692 can't find their function symbol (shouldn't ever happen now).
10693 Also specially treat .fixup for the linux kernel. .fixup
10694 contains branches, but only back to the function that hit an
10696 if (isec->has_toc_reloc
10697 || (isec->flags & SEC_CODE) == 0
10698 || strcmp (isec->name, ".fixup") == 0)
10700 if (elf_gp (isec->owner) != 0)
10701 htab->toc_curr = elf_gp (isec->owner);
10705 if (!isec->call_check_done
10706 && toc_adjusting_stub_needed (info, isec) < 0)
10708 /* If we make a local call from this section, ie. a branch
10709 without a following nop, then we have no place to put a
10710 toc restoring insn. We must use the same toc group as
10712 Testing makes_toc_func_call actually tests for *any*
10713 calls to functions that need a good toc pointer. A more
10714 precise test would be better, as this one will set
10715 incorrect values for pasted .init/.fini fragments.
10716 (Fixed later in check_pasted_section.) */
10717 if (isec->makes_toc_func_call
10718 && elf_gp (isec->owner) != 0)
10719 htab->toc_curr = elf_gp (isec->owner);
10723 /* Functions that don't use the TOC can belong in any TOC group.
10724 Use the last TOC base. */
10725 htab->stub_group[isec->id].toc_off = htab->toc_curr;
10729 /* Check that all .init and .fini sections use the same toc, if they
10730 have toc relocs. */
10733 check_pasted_section (struct bfd_link_info *info, const char *name)
10735 asection *o = bfd_get_section_by_name (info->output_bfd, name);
10739 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10740 bfd_vma toc_off = 0;
10743 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10744 if (i->has_toc_reloc)
10747 toc_off = htab->stub_group[i->id].toc_off;
10748 else if (toc_off != htab->stub_group[i->id].toc_off)
10753 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10754 if (i->makes_toc_func_call)
10756 toc_off = htab->stub_group[i->id].toc_off;
10760 /* Make sure the whole pasted function uses the same toc offset. */
10762 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
10763 htab->stub_group[i->id].toc_off = toc_off;
10769 ppc64_elf_check_init_fini (struct bfd_link_info *info)
10771 return (check_pasted_section (info, ".init")
10772 & check_pasted_section (info, ".fini"));
10775 /* See whether we can group stub sections together. Grouping stub
10776 sections may result in fewer stubs. More importantly, we need to
10777 put all .init* and .fini* stubs at the beginning of the .init or
10778 .fini output sections respectively, because glibc splits the
10779 _init and _fini functions into multiple parts. Putting a stub in
10780 the middle of a function is not a good idea. */
10783 group_sections (struct ppc_link_hash_table *htab,
10784 bfd_size_type stub_group_size,
10785 bfd_boolean stubs_always_before_branch)
10788 bfd_size_type stub14_group_size;
10789 bfd_boolean suppress_size_errors;
10791 suppress_size_errors = FALSE;
10792 stub14_group_size = stub_group_size;
10793 if (stub_group_size == 1)
10795 /* Default values. */
10796 if (stubs_always_before_branch)
10798 stub_group_size = 0x1e00000;
10799 stub14_group_size = 0x7800;
10803 stub_group_size = 0x1c00000;
10804 stub14_group_size = 0x7000;
10806 suppress_size_errors = TRUE;
10809 list = htab->input_list + htab->top_index;
10812 asection *tail = *list;
10813 while (tail != NULL)
10817 bfd_size_type total;
10818 bfd_boolean big_sec;
10822 total = tail->size;
10823 big_sec = total > (ppc64_elf_section_data (tail) != NULL
10824 && ppc64_elf_section_data (tail)->has_14bit_branch
10825 ? stub14_group_size : stub_group_size);
10826 if (big_sec && !suppress_size_errors)
10827 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
10828 tail->owner, tail);
10829 curr_toc = htab->stub_group[tail->id].toc_off;
10831 while ((prev = PREV_SEC (curr)) != NULL
10832 && ((total += curr->output_offset - prev->output_offset)
10833 < (ppc64_elf_section_data (prev) != NULL
10834 && ppc64_elf_section_data (prev)->has_14bit_branch
10835 ? stub14_group_size : stub_group_size))
10836 && htab->stub_group[prev->id].toc_off == curr_toc)
10839 /* OK, the size from the start of CURR to the end is less
10840 than stub_group_size and thus can be handled by one stub
10841 section. (or the tail section is itself larger than
10842 stub_group_size, in which case we may be toast.) We
10843 should really be keeping track of the total size of stubs
10844 added here, as stubs contribute to the final output
10845 section size. That's a little tricky, and this way will
10846 only break if stubs added make the total size more than
10847 2^25, ie. for the default stub_group_size, if stubs total
10848 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10851 prev = PREV_SEC (tail);
10852 /* Set up this stub group. */
10853 htab->stub_group[tail->id].link_sec = curr;
10855 while (tail != curr && (tail = prev) != NULL);
10857 /* But wait, there's more! Input sections up to stub_group_size
10858 bytes before the stub section can be handled by it too.
10859 Don't do this if we have a really large section after the
10860 stubs, as adding more stubs increases the chance that
10861 branches may not reach into the stub section. */
10862 if (!stubs_always_before_branch && !big_sec)
10865 while (prev != NULL
10866 && ((total += tail->output_offset - prev->output_offset)
10867 < (ppc64_elf_section_data (prev) != NULL
10868 && ppc64_elf_section_data (prev)->has_14bit_branch
10869 ? stub14_group_size : stub_group_size))
10870 && htab->stub_group[prev->id].toc_off == curr_toc)
10873 prev = PREV_SEC (tail);
10874 htab->stub_group[tail->id].link_sec = curr;
10880 while (list-- != htab->input_list);
10881 free (htab->input_list);
10885 /* Determine and set the size of the stub section for a final link.
10887 The basic idea here is to examine all the relocations looking for
10888 PC-relative calls to a target that is unreachable with a "bl"
10892 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size)
10894 bfd_size_type stub_group_size;
10895 bfd_boolean stubs_always_before_branch;
10896 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10901 stubs_always_before_branch = group_size < 0;
10902 if (group_size < 0)
10903 stub_group_size = -group_size;
10905 stub_group_size = group_size;
10907 group_sections (htab, stub_group_size, stubs_always_before_branch);
10912 unsigned int bfd_indx;
10913 asection *stub_sec;
10915 htab->stub_iteration += 1;
10917 for (input_bfd = info->input_bfds, bfd_indx = 0;
10919 input_bfd = input_bfd->link_next, bfd_indx++)
10921 Elf_Internal_Shdr *symtab_hdr;
10923 Elf_Internal_Sym *local_syms = NULL;
10925 if (!is_ppc64_elf (input_bfd))
10928 /* We'll need the symbol table in a second. */
10929 symtab_hdr = &elf_symtab_hdr (input_bfd);
10930 if (symtab_hdr->sh_info == 0)
10933 /* Walk over each section attached to the input bfd. */
10934 for (section = input_bfd->sections;
10936 section = section->next)
10938 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
10940 /* If there aren't any relocs, then there's nothing more
10942 if ((section->flags & SEC_RELOC) == 0
10943 || (section->flags & SEC_ALLOC) == 0
10944 || (section->flags & SEC_LOAD) == 0
10945 || (section->flags & SEC_CODE) == 0
10946 || section->reloc_count == 0)
10949 /* If this section is a link-once section that will be
10950 discarded, then don't create any stubs. */
10951 if (section->output_section == NULL
10952 || section->output_section->owner != info->output_bfd)
10955 /* Get the relocs. */
10957 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
10958 info->keep_memory);
10959 if (internal_relocs == NULL)
10960 goto error_ret_free_local;
10962 /* Now examine each relocation. */
10963 irela = internal_relocs;
10964 irelaend = irela + section->reloc_count;
10965 for (; irela < irelaend; irela++)
10967 enum elf_ppc64_reloc_type r_type;
10968 unsigned int r_indx;
10969 enum ppc_stub_type stub_type;
10970 struct ppc_stub_hash_entry *stub_entry;
10971 asection *sym_sec, *code_sec;
10972 bfd_vma sym_value, code_value;
10973 bfd_vma destination;
10974 bfd_boolean ok_dest;
10975 struct ppc_link_hash_entry *hash;
10976 struct ppc_link_hash_entry *fdh;
10977 struct elf_link_hash_entry *h;
10978 Elf_Internal_Sym *sym;
10980 const asection *id_sec;
10981 struct _opd_sec_data *opd;
10982 struct plt_entry *plt_ent;
10984 r_type = ELF64_R_TYPE (irela->r_info);
10985 r_indx = ELF64_R_SYM (irela->r_info);
10987 if (r_type >= R_PPC64_max)
10989 bfd_set_error (bfd_error_bad_value);
10990 goto error_ret_free_internal;
10993 /* Only look for stubs on branch instructions. */
10994 if (r_type != R_PPC64_REL24
10995 && r_type != R_PPC64_REL14
10996 && r_type != R_PPC64_REL14_BRTAKEN
10997 && r_type != R_PPC64_REL14_BRNTAKEN)
11000 /* Now determine the call target, its name, value,
11002 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11003 r_indx, input_bfd))
11004 goto error_ret_free_internal;
11005 hash = (struct ppc_link_hash_entry *) h;
11012 sym_value = sym->st_value;
11015 else if (hash->elf.root.type == bfd_link_hash_defined
11016 || hash->elf.root.type == bfd_link_hash_defweak)
11018 sym_value = hash->elf.root.u.def.value;
11019 if (sym_sec->output_section != NULL)
11022 else if (hash->elf.root.type == bfd_link_hash_undefweak
11023 || hash->elf.root.type == bfd_link_hash_undefined)
11025 /* Recognise an old ABI func code entry sym, and
11026 use the func descriptor sym instead if it is
11028 if (hash->elf.root.root.string[0] == '.'
11029 && (fdh = lookup_fdh (hash, htab)) != NULL)
11031 if (fdh->elf.root.type == bfd_link_hash_defined
11032 || fdh->elf.root.type == bfd_link_hash_defweak)
11034 sym_sec = fdh->elf.root.u.def.section;
11035 sym_value = fdh->elf.root.u.def.value;
11036 if (sym_sec->output_section != NULL)
11045 bfd_set_error (bfd_error_bad_value);
11046 goto error_ret_free_internal;
11052 sym_value += irela->r_addend;
11053 destination = (sym_value
11054 + sym_sec->output_offset
11055 + sym_sec->output_section->vma);
11058 code_sec = sym_sec;
11059 code_value = sym_value;
11060 opd = get_opd_info (sym_sec);
11065 if (hash == NULL && opd->adjust != NULL)
11067 long adjust = opd->adjust[sym_value / 8];
11070 code_value += adjust;
11071 sym_value += adjust;
11073 dest = opd_entry_value (sym_sec, sym_value,
11074 &code_sec, &code_value);
11075 if (dest != (bfd_vma) -1)
11077 destination = dest;
11080 /* Fixup old ABI sym to point at code
11082 hash->elf.root.type = bfd_link_hash_defweak;
11083 hash->elf.root.u.def.section = code_sec;
11084 hash->elf.root.u.def.value = code_value;
11089 /* Determine what (if any) linker stub is needed. */
11091 stub_type = ppc_type_of_stub (section, irela, &hash,
11092 &plt_ent, destination);
11094 if (stub_type != ppc_stub_plt_call)
11096 /* Check whether we need a TOC adjusting stub.
11097 Since the linker pastes together pieces from
11098 different object files when creating the
11099 _init and _fini functions, it may be that a
11100 call to what looks like a local sym is in
11101 fact a call needing a TOC adjustment. */
11102 if (code_sec != NULL
11103 && code_sec->output_section != NULL
11104 && (htab->stub_group[code_sec->id].toc_off
11105 != htab->stub_group[section->id].toc_off)
11106 && (code_sec->has_toc_reloc
11107 || code_sec->makes_toc_func_call))
11108 stub_type = ppc_stub_long_branch_r2off;
11111 if (stub_type == ppc_stub_none)
11114 /* __tls_get_addr calls might be eliminated. */
11115 if (stub_type != ppc_stub_plt_call
11117 && (hash == htab->tls_get_addr
11118 || hash == htab->tls_get_addr_fd)
11119 && section->has_tls_reloc
11120 && irela != internal_relocs)
11122 /* Get tls info. */
11123 unsigned char *tls_mask;
11125 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
11126 irela - 1, input_bfd))
11127 goto error_ret_free_internal;
11128 if (*tls_mask != 0)
11132 /* Support for grouping stub sections. */
11133 id_sec = htab->stub_group[section->id].link_sec;
11135 /* Get the name of this stub. */
11136 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
11138 goto error_ret_free_internal;
11140 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
11141 stub_name, FALSE, FALSE);
11142 if (stub_entry != NULL)
11144 /* The proper stub has already been created. */
11149 stub_entry = ppc_add_stub (stub_name, section, htab);
11150 if (stub_entry == NULL)
11153 error_ret_free_internal:
11154 if (elf_section_data (section)->relocs == NULL)
11155 free (internal_relocs);
11156 error_ret_free_local:
11157 if (local_syms != NULL
11158 && (symtab_hdr->contents
11159 != (unsigned char *) local_syms))
11164 stub_entry->stub_type = stub_type;
11165 if (stub_type != ppc_stub_plt_call)
11167 stub_entry->target_value = code_value;
11168 stub_entry->target_section = code_sec;
11172 stub_entry->target_value = sym_value;
11173 stub_entry->target_section = sym_sec;
11175 stub_entry->h = hash;
11176 stub_entry->plt_ent = plt_ent;
11177 stub_entry->addend = irela->r_addend;
11179 if (stub_entry->h != NULL)
11180 htab->stub_globals += 1;
11183 /* We're done with the internal relocs, free them. */
11184 if (elf_section_data (section)->relocs != internal_relocs)
11185 free (internal_relocs);
11188 if (local_syms != NULL
11189 && symtab_hdr->contents != (unsigned char *) local_syms)
11191 if (!info->keep_memory)
11194 symtab_hdr->contents = (unsigned char *) local_syms;
11198 /* We may have added some stubs. Find out the new size of the
11200 for (stub_sec = htab->stub_bfd->sections;
11202 stub_sec = stub_sec->next)
11203 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11205 stub_sec->rawsize = stub_sec->size;
11206 stub_sec->size = 0;
11207 stub_sec->reloc_count = 0;
11208 stub_sec->flags &= ~SEC_RELOC;
11211 htab->brlt->size = 0;
11212 htab->brlt->reloc_count = 0;
11213 htab->brlt->flags &= ~SEC_RELOC;
11214 if (htab->relbrlt != NULL)
11215 htab->relbrlt->size = 0;
11217 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
11219 if (info->emitrelocations
11220 && htab->glink != NULL && htab->glink->size != 0)
11222 htab->glink->reloc_count = 1;
11223 htab->glink->flags |= SEC_RELOC;
11226 for (stub_sec = htab->stub_bfd->sections;
11228 stub_sec = stub_sec->next)
11229 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11230 && stub_sec->rawsize != stub_sec->size)
11233 /* Exit from this loop when no stubs have been added, and no stubs
11234 have changed size. */
11235 if (stub_sec == NULL)
11238 /* Ask the linker to do its stuff. */
11239 (*htab->layout_sections_again) ();
11242 /* It would be nice to strip htab->brlt from the output if the
11243 section is empty, but it's too late. If we strip sections here,
11244 the dynamic symbol table is corrupted since the section symbol
11245 for the stripped section isn't written. */
11250 /* Called after we have determined section placement. If sections
11251 move, we'll be called again. Provide a value for TOCstart. */
11254 ppc64_elf_toc (bfd *obfd)
11259 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11260 order. The TOC starts where the first of these sections starts. */
11261 s = bfd_get_section_by_name (obfd, ".got");
11262 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11263 s = bfd_get_section_by_name (obfd, ".toc");
11264 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11265 s = bfd_get_section_by_name (obfd, ".tocbss");
11266 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11267 s = bfd_get_section_by_name (obfd, ".plt");
11268 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
11270 /* This may happen for
11271 o references to TOC base (SYM@toc / TOC[tc0]) without a
11273 o bad linker script
11274 o --gc-sections and empty TOC sections
11276 FIXME: Warn user? */
11278 /* Look for a likely section. We probably won't even be
11280 for (s = obfd->sections; s != NULL; s = s->next)
11281 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
11283 == (SEC_ALLOC | SEC_SMALL_DATA))
11286 for (s = obfd->sections; s != NULL; s = s->next)
11287 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
11288 == (SEC_ALLOC | SEC_SMALL_DATA))
11291 for (s = obfd->sections; s != NULL; s = s->next)
11292 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
11296 for (s = obfd->sections; s != NULL; s = s->next)
11297 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
11303 TOCstart = s->output_section->vma + s->output_offset;
11308 /* Build all the stubs associated with the current output file.
11309 The stubs are kept in a hash table attached to the main linker
11310 hash table. This function is called via gldelf64ppc_finish. */
11313 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
11314 struct bfd_link_info *info,
11317 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11318 asection *stub_sec;
11320 int stub_sec_count = 0;
11325 htab->emit_stub_syms = emit_stub_syms;
11327 /* Allocate memory to hold the linker stubs. */
11328 for (stub_sec = htab->stub_bfd->sections;
11330 stub_sec = stub_sec->next)
11331 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11332 && stub_sec->size != 0)
11334 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11335 if (stub_sec->contents == NULL)
11337 /* We want to check that built size is the same as calculated
11338 size. rawsize is a convenient location to use. */
11339 stub_sec->rawsize = stub_sec->size;
11340 stub_sec->size = 0;
11343 if (htab->glink != NULL && htab->glink->size != 0)
11348 /* Build the .glink plt call stub. */
11349 if (htab->emit_stub_syms)
11351 struct elf_link_hash_entry *h;
11352 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11353 TRUE, FALSE, FALSE);
11356 if (h->root.type == bfd_link_hash_new)
11358 h->root.type = bfd_link_hash_defined;
11359 h->root.u.def.section = htab->glink;
11360 h->root.u.def.value = 8;
11361 h->ref_regular = 1;
11362 h->def_regular = 1;
11363 h->ref_regular_nonweak = 1;
11364 h->forced_local = 1;
11368 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11369 if (info->emitrelocations)
11371 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11374 r->r_offset = (htab->glink->output_offset
11375 + htab->glink->output_section->vma);
11376 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11377 r->r_addend = plt0;
11379 p = htab->glink->contents;
11380 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
11381 bfd_put_64 (htab->glink->owner, plt0, p);
11383 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
11385 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
11387 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
11389 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
11391 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
11393 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
11395 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
11397 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
11399 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
11401 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
11403 bfd_put_32 (htab->glink->owner, BCTR, p);
11405 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11407 bfd_put_32 (htab->glink->owner, NOP, p);
11411 /* Build the .glink lazy link call stubs. */
11413 while (p < htab->glink->contents + htab->glink->size)
11417 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
11422 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
11424 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
11427 bfd_put_32 (htab->glink->owner,
11428 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
11432 htab->glink->rawsize = p - htab->glink->contents;
11435 if (htab->brlt->size != 0)
11437 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
11439 if (htab->brlt->contents == NULL)
11442 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
11444 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
11445 htab->relbrlt->size);
11446 if (htab->relbrlt->contents == NULL)
11450 /* Build the stubs as directed by the stub hash table. */
11451 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
11453 if (htab->relbrlt != NULL)
11454 htab->relbrlt->reloc_count = 0;
11456 for (stub_sec = htab->stub_bfd->sections;
11458 stub_sec = stub_sec->next)
11459 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11461 stub_sec_count += 1;
11462 if (stub_sec->rawsize != stub_sec->size)
11466 if (stub_sec != NULL
11467 || htab->glink->rawsize != htab->glink->size)
11469 htab->stub_error = TRUE;
11470 (*_bfd_error_handler) (_("stubs don't match calculated size"));
11473 if (htab->stub_error)
11478 *stats = bfd_malloc (500);
11479 if (*stats == NULL)
11482 sprintf (*stats, _("linker stubs in %u group%s\n"
11484 " toc adjust %lu\n"
11485 " long branch %lu\n"
11486 " long toc adj %lu\n"
11489 stub_sec_count == 1 ? "" : "s",
11490 htab->stub_count[ppc_stub_long_branch - 1],
11491 htab->stub_count[ppc_stub_long_branch_r2off - 1],
11492 htab->stub_count[ppc_stub_plt_branch - 1],
11493 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
11494 htab->stub_count[ppc_stub_plt_call - 1]);
11499 /* This function undoes the changes made by add_symbol_adjust. */
11502 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11504 struct ppc_link_hash_entry *eh;
11506 if (h->root.type == bfd_link_hash_indirect)
11509 if (h->root.type == bfd_link_hash_warning)
11510 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11512 eh = (struct ppc_link_hash_entry *) h;
11513 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
11516 eh->elf.root.type = bfd_link_hash_undefined;
11521 ppc64_elf_restore_symbols (struct bfd_link_info *info)
11523 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11526 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
11529 /* What to do when ld finds relocations against symbols defined in
11530 discarded sections. */
11532 static unsigned int
11533 ppc64_elf_action_discarded (asection *sec)
11535 if (strcmp (".opd", sec->name) == 0)
11538 if (strcmp (".toc", sec->name) == 0)
11541 if (strcmp (".toc1", sec->name) == 0)
11544 return _bfd_elf_default_action_discarded (sec);
11547 /* REL points to a low-part reloc on a largetoc instruction sequence.
11548 Find the matching high-part reloc instruction and verify that it
11549 is addis REG,x,imm. If so, set *REG to x and return a pointer to
11550 the high-part reloc. */
11552 static const Elf_Internal_Rela *
11553 ha_reloc_match (const Elf_Internal_Rela *relocs,
11554 const Elf_Internal_Rela *rel,
11556 bfd_boolean match_addend,
11557 const bfd *input_bfd,
11558 const bfd_byte *contents)
11560 enum elf_ppc64_reloc_type r_type, r_type_ha;
11561 bfd_vma r_info_ha, r_addend;
11563 r_type = ELF64_R_TYPE (rel->r_info);
11566 case R_PPC64_GOT_TLSLD16_LO:
11567 case R_PPC64_GOT_TLSGD16_LO:
11568 case R_PPC64_GOT_TPREL16_LO_DS:
11569 case R_PPC64_GOT_DTPREL16_LO_DS:
11570 case R_PPC64_GOT16_LO:
11571 case R_PPC64_TOC16_LO:
11572 r_type_ha = r_type + 2;
11574 case R_PPC64_GOT16_LO_DS:
11575 r_type_ha = R_PPC64_GOT16_HA;
11577 case R_PPC64_TOC16_LO_DS:
11578 r_type_ha = R_PPC64_TOC16_HA;
11583 r_info_ha = ELF64_R_INFO (ELF64_R_SYM (rel->r_info), r_type_ha);
11584 r_addend = rel->r_addend;
11586 while (--rel >= relocs)
11587 if (rel->r_info == r_info_ha
11589 || rel->r_addend == r_addend))
11591 const bfd_byte *p = contents + (rel->r_offset & ~3);
11592 unsigned int insn = bfd_get_32 (input_bfd, p);
11593 if ((insn & (0x3f << 26)) == (15u << 26) /* addis rt,x,imm */
11594 && (insn & (0x1f << 21)) == (*reg << 21))
11596 *reg = (insn >> 16) & 0x1f;
11604 /* The RELOCATE_SECTION function is called by the ELF backend linker
11605 to handle the relocations for a section.
11607 The relocs are always passed as Rela structures; if the section
11608 actually uses Rel structures, the r_addend field will always be
11611 This function is responsible for adjust the section contents as
11612 necessary, and (if using Rela relocs and generating a
11613 relocatable output file) adjusting the reloc addend as
11616 This function does not have to worry about setting the reloc
11617 address or the reloc symbol index.
11619 LOCAL_SYMS is a pointer to the swapped in local symbols.
11621 LOCAL_SECTIONS is an array giving the section in the input file
11622 corresponding to the st_shndx field of each local symbol.
11624 The global hash table entry for the global symbols can be found
11625 via elf_sym_hashes (input_bfd).
11627 When generating relocatable output, this function must handle
11628 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11629 going to be the section symbol corresponding to the output
11630 section, which means that the addend must be adjusted
11634 ppc64_elf_relocate_section (bfd *output_bfd,
11635 struct bfd_link_info *info,
11637 asection *input_section,
11638 bfd_byte *contents,
11639 Elf_Internal_Rela *relocs,
11640 Elf_Internal_Sym *local_syms,
11641 asection **local_sections)
11643 struct ppc_link_hash_table *htab;
11644 Elf_Internal_Shdr *symtab_hdr;
11645 struct elf_link_hash_entry **sym_hashes;
11646 Elf_Internal_Rela *rel;
11647 Elf_Internal_Rela *relend;
11648 Elf_Internal_Rela outrel;
11650 struct got_entry **local_got_ents;
11651 unsigned char *ha_opt;
11653 bfd_boolean no_ha_opt;
11654 bfd_boolean ret = TRUE;
11655 bfd_boolean is_opd;
11656 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11657 bfd_boolean is_power4 = FALSE;
11658 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
11660 /* Initialize howto table if needed. */
11661 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
11664 htab = ppc_hash_table (info);
11668 /* Don't relocate stub sections. */
11669 if (input_section->owner == htab->stub_bfd)
11672 BFD_ASSERT (is_ppc64_elf (input_bfd));
11674 local_got_ents = elf_local_got_ents (input_bfd);
11675 TOCstart = elf_gp (output_bfd);
11676 symtab_hdr = &elf_symtab_hdr (input_bfd);
11677 sym_hashes = elf_sym_hashes (input_bfd);
11678 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
11683 relend = relocs + input_section->reloc_count;
11684 for (; rel < relend; rel++)
11686 enum elf_ppc64_reloc_type r_type;
11687 bfd_vma addend, orig_addend;
11688 bfd_reloc_status_type r;
11689 Elf_Internal_Sym *sym;
11691 struct elf_link_hash_entry *h_elf;
11692 struct ppc_link_hash_entry *h;
11693 struct ppc_link_hash_entry *fdh;
11694 const char *sym_name;
11695 unsigned long r_symndx, toc_symndx;
11696 bfd_vma toc_addend;
11697 unsigned char tls_mask, tls_gd, tls_type;
11698 unsigned char sym_type;
11699 bfd_vma relocation;
11700 bfd_boolean unresolved_reloc;
11701 bfd_boolean warned;
11704 struct ppc_stub_hash_entry *stub_entry;
11705 bfd_vma max_br_offset;
11708 r_type = ELF64_R_TYPE (rel->r_info);
11709 r_symndx = ELF64_R_SYM (rel->r_info);
11711 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11712 symbol of the previous ADDR64 reloc. The symbol gives us the
11713 proper TOC base to use. */
11714 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
11716 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
11718 r_symndx = ELF64_R_SYM (rel[-1].r_info);
11724 unresolved_reloc = FALSE;
11726 orig_addend = rel->r_addend;
11728 if (r_symndx < symtab_hdr->sh_info)
11730 /* It's a local symbol. */
11731 struct _opd_sec_data *opd;
11733 sym = local_syms + r_symndx;
11734 sec = local_sections[r_symndx];
11735 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
11736 sym_type = ELF64_ST_TYPE (sym->st_info);
11737 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
11738 opd = get_opd_info (sec);
11739 if (opd != NULL && opd->adjust != NULL)
11741 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
11746 /* If this is a relocation against the opd section sym
11747 and we have edited .opd, adjust the reloc addend so
11748 that ld -r and ld --emit-relocs output is correct.
11749 If it is a reloc against some other .opd symbol,
11750 then the symbol value will be adjusted later. */
11751 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
11752 rel->r_addend += adjust;
11754 relocation += adjust;
11760 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
11761 r_symndx, symtab_hdr, sym_hashes,
11762 h_elf, sec, relocation,
11763 unresolved_reloc, warned);
11764 sym_name = h_elf->root.root.string;
11765 sym_type = h_elf->type;
11767 h = (struct ppc_link_hash_entry *) h_elf;
11769 if (sec != NULL && elf_discarded_section (sec))
11770 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
11772 ppc64_elf_howto_table[r_type],
11775 if (info->relocatable)
11778 /* TLS optimizations. Replace instruction sequences and relocs
11779 based on information we collected in tls_optimize. We edit
11780 RELOCS so that --emit-relocs will output something sensible
11781 for the final instruction stream. */
11786 tls_mask = h->tls_mask;
11787 else if (local_got_ents != NULL)
11789 struct plt_entry **local_plt = (struct plt_entry **)
11790 (local_got_ents + symtab_hdr->sh_info);
11791 unsigned char *lgot_masks = (unsigned char *)
11792 (local_plt + symtab_hdr->sh_info);
11793 tls_mask = lgot_masks[r_symndx];
11796 && (r_type == R_PPC64_TLS
11797 || r_type == R_PPC64_TLSGD
11798 || r_type == R_PPC64_TLSLD))
11800 /* Check for toc tls entries. */
11801 unsigned char *toc_tls;
11803 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11804 &local_syms, rel, input_bfd))
11808 tls_mask = *toc_tls;
11811 /* Check that tls relocs are used with tls syms, and non-tls
11812 relocs are used with non-tls syms. */
11813 if (r_symndx != STN_UNDEF
11814 && r_type != R_PPC64_NONE
11816 || h->elf.root.type == bfd_link_hash_defined
11817 || h->elf.root.type == bfd_link_hash_defweak)
11818 && (IS_PPC64_TLS_RELOC (r_type)
11819 != (sym_type == STT_TLS
11820 || (sym_type == STT_SECTION
11821 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
11824 && (r_type == R_PPC64_TLS
11825 || r_type == R_PPC64_TLSGD
11826 || r_type == R_PPC64_TLSLD))
11827 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11830 (*_bfd_error_handler)
11831 (!IS_PPC64_TLS_RELOC (r_type)
11832 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11833 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11836 (long) rel->r_offset,
11837 ppc64_elf_howto_table[r_type]->name,
11841 /* Ensure reloc mapping code below stays sane. */
11842 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
11843 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
11844 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
11845 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
11846 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
11847 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
11848 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
11849 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
11850 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
11851 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
11859 case R_PPC64_LO_DS_OPT:
11860 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
11861 if ((insn & (0x3f << 26)) != 58u << 26)
11863 insn += (14u << 26) - (58u << 26);
11864 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
11865 r_type = R_PPC64_TOC16_LO;
11866 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11869 case R_PPC64_TOC16:
11870 case R_PPC64_TOC16_LO:
11871 case R_PPC64_TOC16_DS:
11872 case R_PPC64_TOC16_LO_DS:
11874 /* Check for toc tls entries. */
11875 unsigned char *toc_tls;
11878 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11879 &local_syms, rel, input_bfd);
11885 tls_mask = *toc_tls;
11886 if (r_type == R_PPC64_TOC16_DS
11887 || r_type == R_PPC64_TOC16_LO_DS)
11890 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
11895 /* If we found a GD reloc pair, then we might be
11896 doing a GD->IE transition. */
11899 tls_gd = TLS_TPRELGD;
11900 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11903 else if (retval == 3)
11905 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11913 case R_PPC64_GOT_TPREL16_HI:
11914 case R_PPC64_GOT_TPREL16_HA:
11916 && (tls_mask & TLS_TPREL) == 0)
11918 rel->r_offset -= d_offset;
11919 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11920 r_type = R_PPC64_NONE;
11921 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11925 case R_PPC64_GOT_TPREL16_DS:
11926 case R_PPC64_GOT_TPREL16_LO_DS:
11928 && (tls_mask & TLS_TPREL) == 0)
11931 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
11933 insn |= 0x3c0d0000; /* addis 0,13,0 */
11934 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
11935 r_type = R_PPC64_TPREL16_HA;
11936 if (toc_symndx != 0)
11938 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11939 rel->r_addend = toc_addend;
11940 /* We changed the symbol. Start over in order to
11941 get h, sym, sec etc. right. */
11946 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11952 && (tls_mask & TLS_TPREL) == 0)
11954 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
11955 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
11958 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
11959 /* Was PPC64_TLS which sits on insn boundary, now
11960 PPC64_TPREL16_LO which is at low-order half-word. */
11961 rel->r_offset += d_offset;
11962 r_type = R_PPC64_TPREL16_LO;
11963 if (toc_symndx != 0)
11965 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11966 rel->r_addend = toc_addend;
11967 /* We changed the symbol. Start over in order to
11968 get h, sym, sec etc. right. */
11973 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11977 case R_PPC64_GOT_TLSGD16_HI:
11978 case R_PPC64_GOT_TLSGD16_HA:
11979 tls_gd = TLS_TPRELGD;
11980 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11984 case R_PPC64_GOT_TLSLD16_HI:
11985 case R_PPC64_GOT_TLSLD16_HA:
11986 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11989 if ((tls_mask & tls_gd) != 0)
11990 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11991 + R_PPC64_GOT_TPREL16_DS);
11994 rel->r_offset -= d_offset;
11995 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11996 r_type = R_PPC64_NONE;
11998 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12002 case R_PPC64_GOT_TLSGD16:
12003 case R_PPC64_GOT_TLSGD16_LO:
12004 tls_gd = TLS_TPRELGD;
12005 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12009 case R_PPC64_GOT_TLSLD16:
12010 case R_PPC64_GOT_TLSLD16_LO:
12011 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12013 unsigned int insn1, insn2, insn3;
12017 offset = (bfd_vma) -1;
12018 /* If not using the newer R_PPC64_TLSGD/LD to mark
12019 __tls_get_addr calls, we must trust that the call
12020 stays with its arg setup insns, ie. that the next
12021 reloc is the __tls_get_addr call associated with
12022 the current reloc. Edit both insns. */
12023 if (input_section->has_tls_get_addr_call
12024 && rel + 1 < relend
12025 && branch_reloc_hash_match (input_bfd, rel + 1,
12026 htab->tls_get_addr,
12027 htab->tls_get_addr_fd))
12028 offset = rel[1].r_offset;
12029 if ((tls_mask & tls_gd) != 0)
12032 insn1 = bfd_get_32 (output_bfd,
12033 contents + rel->r_offset - d_offset);
12034 insn1 &= (1 << 26) - (1 << 2);
12035 insn1 |= 58 << 26; /* ld */
12036 insn2 = 0x7c636a14; /* add 3,3,13 */
12037 if (offset != (bfd_vma) -1)
12038 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12039 if ((tls_mask & TLS_EXPLICIT) == 0)
12040 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12041 + R_PPC64_GOT_TPREL16_DS);
12043 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
12044 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12049 insn1 = 0x3c6d0000; /* addis 3,13,0 */
12050 insn2 = 0x38630000; /* addi 3,3,0 */
12053 /* Was an LD reloc. */
12055 sec = local_sections[toc_symndx];
12057 r_symndx < symtab_hdr->sh_info;
12059 if (local_sections[r_symndx] == sec)
12061 if (r_symndx >= symtab_hdr->sh_info)
12062 r_symndx = STN_UNDEF;
12063 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12064 if (r_symndx != STN_UNDEF)
12065 rel->r_addend -= (local_syms[r_symndx].st_value
12066 + sec->output_offset
12067 + sec->output_section->vma);
12069 else if (toc_symndx != 0)
12071 r_symndx = toc_symndx;
12072 rel->r_addend = toc_addend;
12074 r_type = R_PPC64_TPREL16_HA;
12075 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12076 if (offset != (bfd_vma) -1)
12078 rel[1].r_info = ELF64_R_INFO (r_symndx,
12079 R_PPC64_TPREL16_LO);
12080 rel[1].r_offset = offset + d_offset;
12081 rel[1].r_addend = rel->r_addend;
12084 bfd_put_32 (output_bfd, insn1,
12085 contents + rel->r_offset - d_offset);
12086 if (offset != (bfd_vma) -1)
12088 insn3 = bfd_get_32 (output_bfd,
12089 contents + offset + 4);
12091 || insn3 == CROR_151515 || insn3 == CROR_313131)
12093 rel[1].r_offset += 4;
12094 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12097 bfd_put_32 (output_bfd, insn2, contents + offset);
12099 if ((tls_mask & tls_gd) == 0
12100 && (tls_gd == 0 || toc_symndx != 0))
12102 /* We changed the symbol. Start over in order
12103 to get h, sym, sec etc. right. */
12110 case R_PPC64_TLSGD:
12111 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12113 unsigned int insn2, insn3;
12114 bfd_vma offset = rel->r_offset;
12116 if ((tls_mask & TLS_TPRELGD) != 0)
12119 r_type = R_PPC64_NONE;
12120 insn2 = 0x7c636a14; /* add 3,3,13 */
12125 if (toc_symndx != 0)
12127 r_symndx = toc_symndx;
12128 rel->r_addend = toc_addend;
12130 r_type = R_PPC64_TPREL16_LO;
12131 rel->r_offset = offset + d_offset;
12132 insn2 = 0x38630000; /* addi 3,3,0 */
12134 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12135 /* Zap the reloc on the _tls_get_addr call too. */
12136 BFD_ASSERT (offset == rel[1].r_offset);
12137 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12138 insn3 = bfd_get_32 (output_bfd,
12139 contents + offset + 4);
12141 || insn3 == CROR_151515 || insn3 == CROR_313131)
12143 rel->r_offset += 4;
12144 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12147 bfd_put_32 (output_bfd, insn2, contents + offset);
12148 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
12156 case R_PPC64_TLSLD:
12157 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12159 unsigned int insn2, insn3;
12160 bfd_vma offset = rel->r_offset;
12163 sec = local_sections[toc_symndx];
12165 r_symndx < symtab_hdr->sh_info;
12167 if (local_sections[r_symndx] == sec)
12169 if (r_symndx >= symtab_hdr->sh_info)
12170 r_symndx = STN_UNDEF;
12171 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
12172 if (r_symndx != STN_UNDEF)
12173 rel->r_addend -= (local_syms[r_symndx].st_value
12174 + sec->output_offset
12175 + sec->output_section->vma);
12177 r_type = R_PPC64_TPREL16_LO;
12178 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12179 rel->r_offset = offset + d_offset;
12180 /* Zap the reloc on the _tls_get_addr call too. */
12181 BFD_ASSERT (offset == rel[1].r_offset);
12182 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
12183 insn2 = 0x38630000; /* addi 3,3,0 */
12184 insn3 = bfd_get_32 (output_bfd,
12185 contents + offset + 4);
12187 || insn3 == CROR_151515 || insn3 == CROR_313131)
12189 rel->r_offset += 4;
12190 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12193 bfd_put_32 (output_bfd, insn2, contents + offset);
12199 case R_PPC64_DTPMOD64:
12200 if (rel + 1 < relend
12201 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
12202 && rel[1].r_offset == rel->r_offset + 8)
12204 if ((tls_mask & TLS_GD) == 0)
12206 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
12207 if ((tls_mask & TLS_TPRELGD) != 0)
12208 r_type = R_PPC64_TPREL64;
12211 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12212 r_type = R_PPC64_NONE;
12214 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12219 if ((tls_mask & TLS_LD) == 0)
12221 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
12222 r_type = R_PPC64_NONE;
12223 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12228 case R_PPC64_TPREL64:
12229 if ((tls_mask & TLS_TPREL) == 0)
12231 r_type = R_PPC64_NONE;
12232 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12237 /* Handle other relocations that tweak non-addend part of insn. */
12239 max_br_offset = 1 << 25;
12240 addend = rel->r_addend;
12246 /* Branch taken prediction relocations. */
12247 case R_PPC64_ADDR14_BRTAKEN:
12248 case R_PPC64_REL14_BRTAKEN:
12249 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12252 /* Branch not taken prediction relocations. */
12253 case R_PPC64_ADDR14_BRNTAKEN:
12254 case R_PPC64_REL14_BRNTAKEN:
12255 insn |= bfd_get_32 (output_bfd,
12256 contents + rel->r_offset) & ~(0x01 << 21);
12259 case R_PPC64_REL14:
12260 max_br_offset = 1 << 15;
12263 case R_PPC64_REL24:
12264 /* Calls to functions with a different TOC, such as calls to
12265 shared objects, need to alter the TOC pointer. This is
12266 done using a linkage stub. A REL24 branching to these
12267 linkage stubs needs to be followed by a nop, as the nop
12268 will be replaced with an instruction to restore the TOC
12273 && h->oh->is_func_descriptor)
12274 fdh = ppc_follow_link (h->oh);
12275 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab);
12276 if (stub_entry != NULL
12277 && (stub_entry->stub_type == ppc_stub_plt_call
12278 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
12279 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
12281 bfd_boolean can_plt_call = FALSE;
12283 if (rel->r_offset + 8 <= input_section->size)
12286 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
12288 || nop == CROR_151515 || nop == CROR_313131)
12291 && (h == htab->tls_get_addr_fd
12292 || h == htab->tls_get_addr)
12293 && !htab->no_tls_get_addr_opt)
12295 /* Special stub used, leave nop alone. */
12298 bfd_put_32 (input_bfd, LD_R2_40R1,
12299 contents + rel->r_offset + 4);
12300 can_plt_call = TRUE;
12306 if (stub_entry->stub_type == ppc_stub_plt_call)
12308 /* If this is a plain branch rather than a branch
12309 and link, don't require a nop. However, don't
12310 allow tail calls in a shared library as they
12311 will result in r2 being corrupted. */
12313 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
12314 if (info->executable && (br & 1) == 0)
12315 can_plt_call = TRUE;
12320 && strcmp (h->elf.root.root.string,
12321 ".__libc_start_main") == 0)
12323 /* Allow crt1 branch to go via a toc adjusting stub. */
12324 can_plt_call = TRUE;
12328 if (strcmp (input_section->output_section->name,
12330 || strcmp (input_section->output_section->name,
12332 (*_bfd_error_handler)
12333 (_("%B(%A+0x%lx): automatic multiple TOCs "
12334 "not supported using your crt files; "
12335 "recompile with -mminimal-toc or upgrade gcc"),
12338 (long) rel->r_offset);
12340 (*_bfd_error_handler)
12341 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
12342 "does not allow automatic multiple TOCs; "
12343 "recompile with -mminimal-toc or "
12344 "-fno-optimize-sibling-calls, "
12345 "or make `%s' extern"),
12348 (long) rel->r_offset,
12351 bfd_set_error (bfd_error_bad_value);
12357 && stub_entry->stub_type == ppc_stub_plt_call)
12358 unresolved_reloc = FALSE;
12361 if ((stub_entry == NULL
12362 || stub_entry->stub_type == ppc_stub_long_branch
12363 || stub_entry->stub_type == ppc_stub_plt_branch)
12364 && get_opd_info (sec) != NULL)
12366 /* The branch destination is the value of the opd entry. */
12367 bfd_vma off = (relocation + addend
12368 - sec->output_section->vma
12369 - sec->output_offset);
12370 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
12371 if (dest != (bfd_vma) -1)
12378 /* If the branch is out of reach we ought to have a long
12380 from = (rel->r_offset
12381 + input_section->output_offset
12382 + input_section->output_section->vma);
12384 if (stub_entry != NULL
12385 && (stub_entry->stub_type == ppc_stub_long_branch
12386 || stub_entry->stub_type == ppc_stub_plt_branch)
12387 && (r_type == R_PPC64_ADDR14_BRTAKEN
12388 || r_type == R_PPC64_ADDR14_BRNTAKEN
12389 || (relocation + addend - from + max_br_offset
12390 < 2 * max_br_offset)))
12391 /* Don't use the stub if this branch is in range. */
12394 if (stub_entry != NULL)
12396 /* Munge up the value and addend so that we call the stub
12397 rather than the procedure directly. */
12398 relocation = (stub_entry->stub_offset
12399 + stub_entry->stub_sec->output_offset
12400 + stub_entry->stub_sec->output_section->vma);
12408 /* Set 'a' bit. This is 0b00010 in BO field for branch
12409 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12410 for branch on CTR insns (BO == 1a00t or 1a01t). */
12411 if ((insn & (0x14 << 21)) == (0x04 << 21))
12412 insn |= 0x02 << 21;
12413 else if ((insn & (0x14 << 21)) == (0x10 << 21))
12414 insn |= 0x08 << 21;
12420 /* Invert 'y' bit if not the default. */
12421 if ((bfd_signed_vma) (relocation + addend - from) < 0)
12422 insn ^= 0x01 << 21;
12425 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
12428 /* NOP out calls to undefined weak functions.
12429 We can thus call a weak function without first
12430 checking whether the function is defined. */
12432 && h->elf.root.type == bfd_link_hash_undefweak
12433 && h->elf.dynindx == -1
12434 && r_type == R_PPC64_REL24
12438 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12444 /* Set `addend'. */
12449 (*_bfd_error_handler)
12450 (_("%B: unknown relocation type %d for symbol %s"),
12451 input_bfd, (int) r_type, sym_name);
12453 bfd_set_error (bfd_error_bad_value);
12459 case R_PPC64_TLSGD:
12460 case R_PPC64_TLSLD:
12461 case R_PPC64_GNU_VTINHERIT:
12462 case R_PPC64_GNU_VTENTRY:
12465 /* GOT16 relocations. Like an ADDR16 using the symbol's
12466 address in the GOT as relocation value instead of the
12467 symbol's value itself. Also, create a GOT entry for the
12468 symbol and put the symbol value there. */
12469 case R_PPC64_GOT_TLSGD16:
12470 case R_PPC64_GOT_TLSGD16_LO:
12471 case R_PPC64_GOT_TLSGD16_HI:
12472 case R_PPC64_GOT_TLSGD16_HA:
12473 tls_type = TLS_TLS | TLS_GD;
12476 case R_PPC64_GOT_TLSLD16:
12477 case R_PPC64_GOT_TLSLD16_LO:
12478 case R_PPC64_GOT_TLSLD16_HI:
12479 case R_PPC64_GOT_TLSLD16_HA:
12480 tls_type = TLS_TLS | TLS_LD;
12483 case R_PPC64_GOT_TPREL16_DS:
12484 case R_PPC64_GOT_TPREL16_LO_DS:
12485 case R_PPC64_GOT_TPREL16_HI:
12486 case R_PPC64_GOT_TPREL16_HA:
12487 tls_type = TLS_TLS | TLS_TPREL;
12490 case R_PPC64_GOT_DTPREL16_DS:
12491 case R_PPC64_GOT_DTPREL16_LO_DS:
12492 case R_PPC64_GOT_DTPREL16_HI:
12493 case R_PPC64_GOT_DTPREL16_HA:
12494 tls_type = TLS_TLS | TLS_DTPREL;
12497 case R_PPC64_GOT16:
12498 case R_PPC64_GOT16_LO:
12499 case R_PPC64_GOT16_HI:
12500 case R_PPC64_GOT16_HA:
12501 case R_PPC64_GOT16_DS:
12502 case R_PPC64_GOT16_LO_DS:
12505 /* Relocation is to the entry for this symbol in the global
12510 unsigned long indx = 0;
12511 struct got_entry *ent;
12513 if (tls_type == (TLS_TLS | TLS_LD)
12515 || !h->elf.def_dynamic))
12516 ent = ppc64_tlsld_got (input_bfd);
12522 bfd_boolean dyn = htab->elf.dynamic_sections_created;
12523 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
12526 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
12527 /* This is actually a static link, or it is a
12528 -Bsymbolic link and the symbol is defined
12529 locally, or the symbol was forced to be local
12530 because of a version file. */
12534 indx = h->elf.dynindx;
12535 unresolved_reloc = FALSE;
12537 ent = h->elf.got.glist;
12541 if (local_got_ents == NULL)
12543 ent = local_got_ents[r_symndx];
12546 for (; ent != NULL; ent = ent->next)
12547 if (ent->addend == orig_addend
12548 && ent->owner == input_bfd
12549 && ent->tls_type == tls_type)
12555 if (ent->is_indirect)
12556 ent = ent->got.ent;
12557 offp = &ent->got.offset;
12558 got = ppc64_elf_tdata (ent->owner)->got;
12562 /* The offset must always be a multiple of 8. We use the
12563 least significant bit to record whether we have already
12564 processed this entry. */
12566 if ((off & 1) != 0)
12570 /* Generate relocs for the dynamic linker, except in
12571 the case of TLSLD where we'll use one entry per
12579 ? h->elf.type == STT_GNU_IFUNC
12580 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
12581 if ((info->shared || indx != 0)
12583 || (tls_type == (TLS_TLS | TLS_LD)
12584 && !h->elf.def_dynamic)
12585 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12586 || h->elf.root.type != bfd_link_hash_undefweak))
12587 relgot = ppc64_elf_tdata (ent->owner)->relgot;
12589 relgot = htab->reliplt;
12590 if (relgot != NULL)
12592 outrel.r_offset = (got->output_section->vma
12593 + got->output_offset
12595 outrel.r_addend = addend;
12596 if (tls_type & (TLS_LD | TLS_GD))
12598 outrel.r_addend = 0;
12599 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
12600 if (tls_type == (TLS_TLS | TLS_GD))
12602 loc = relgot->contents;
12603 loc += (relgot->reloc_count++
12604 * sizeof (Elf64_External_Rela));
12605 bfd_elf64_swap_reloca_out (output_bfd,
12607 outrel.r_offset += 8;
12608 outrel.r_addend = addend;
12610 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
12613 else if (tls_type == (TLS_TLS | TLS_DTPREL))
12614 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
12615 else if (tls_type == (TLS_TLS | TLS_TPREL))
12616 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
12617 else if (indx != 0)
12618 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
12622 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12624 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12626 /* Write the .got section contents for the sake
12628 loc = got->contents + off;
12629 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
12633 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
12635 outrel.r_addend += relocation;
12636 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
12637 outrel.r_addend -= htab->elf.tls_sec->vma;
12639 loc = relgot->contents;
12640 loc += (relgot->reloc_count++
12641 * sizeof (Elf64_External_Rela));
12642 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12645 /* Init the .got section contents here if we're not
12646 emitting a reloc. */
12649 relocation += addend;
12650 if (tls_type == (TLS_TLS | TLS_LD))
12652 else if (tls_type != 0)
12654 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
12655 if (tls_type == (TLS_TLS | TLS_TPREL))
12656 relocation += DTP_OFFSET - TP_OFFSET;
12658 if (tls_type == (TLS_TLS | TLS_GD))
12660 bfd_put_64 (output_bfd, relocation,
12661 got->contents + off + 8);
12666 bfd_put_64 (output_bfd, relocation,
12667 got->contents + off);
12671 if (off >= (bfd_vma) -2)
12674 relocation = got->output_section->vma + got->output_offset + off;
12675 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
12679 case R_PPC64_PLT16_HA:
12680 case R_PPC64_PLT16_HI:
12681 case R_PPC64_PLT16_LO:
12682 case R_PPC64_PLT32:
12683 case R_PPC64_PLT64:
12684 /* Relocation is to the entry for this symbol in the
12685 procedure linkage table. */
12687 /* Resolve a PLT reloc against a local symbol directly,
12688 without using the procedure linkage table. */
12692 /* It's possible that we didn't make a PLT entry for this
12693 symbol. This happens when statically linking PIC code,
12694 or when using -Bsymbolic. Go find a match if there is a
12696 if (htab->plt != NULL)
12698 struct plt_entry *ent;
12699 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
12700 if (ent->addend == orig_addend
12701 && ent->plt.offset != (bfd_vma) -1)
12703 relocation = (htab->plt->output_section->vma
12704 + htab->plt->output_offset
12705 + ent->plt.offset);
12706 unresolved_reloc = FALSE;
12712 /* Relocation value is TOC base. */
12713 relocation = TOCstart;
12714 if (r_symndx == STN_UNDEF)
12715 relocation += htab->stub_group[input_section->id].toc_off;
12716 else if (unresolved_reloc)
12718 else if (sec != NULL && sec->id <= htab->top_id)
12719 relocation += htab->stub_group[sec->id].toc_off;
12721 unresolved_reloc = TRUE;
12724 /* TOC16 relocs. We want the offset relative to the TOC base,
12725 which is the address of the start of the TOC plus 0x8000.
12726 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12728 case R_PPC64_TOC16:
12729 case R_PPC64_TOC16_LO:
12730 case R_PPC64_TOC16_HI:
12731 case R_PPC64_TOC16_DS:
12732 case R_PPC64_TOC16_LO_DS:
12733 case R_PPC64_TOC16_HA:
12734 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
12737 /* Relocate against the beginning of the section. */
12738 case R_PPC64_SECTOFF:
12739 case R_PPC64_SECTOFF_LO:
12740 case R_PPC64_SECTOFF_HI:
12741 case R_PPC64_SECTOFF_DS:
12742 case R_PPC64_SECTOFF_LO_DS:
12743 case R_PPC64_SECTOFF_HA:
12745 addend -= sec->output_section->vma;
12748 case R_PPC64_REL16:
12749 case R_PPC64_REL16_LO:
12750 case R_PPC64_REL16_HI:
12751 case R_PPC64_REL16_HA:
12754 case R_PPC64_REL14:
12755 case R_PPC64_REL14_BRNTAKEN:
12756 case R_PPC64_REL14_BRTAKEN:
12757 case R_PPC64_REL24:
12760 case R_PPC64_TPREL16:
12761 case R_PPC64_TPREL16_LO:
12762 case R_PPC64_TPREL16_HI:
12763 case R_PPC64_TPREL16_HA:
12764 case R_PPC64_TPREL16_DS:
12765 case R_PPC64_TPREL16_LO_DS:
12766 case R_PPC64_TPREL16_HIGHER:
12767 case R_PPC64_TPREL16_HIGHERA:
12768 case R_PPC64_TPREL16_HIGHEST:
12769 case R_PPC64_TPREL16_HIGHESTA:
12771 && h->elf.root.type == bfd_link_hash_undefweak
12772 && h->elf.dynindx == -1)
12774 /* Make this relocation against an undefined weak symbol
12775 resolve to zero. This is really just a tweak, since
12776 code using weak externs ought to check that they are
12777 defined before using them. */
12778 bfd_byte *p = contents + rel->r_offset - d_offset;
12780 insn = bfd_get_32 (output_bfd, p);
12781 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
12783 bfd_put_32 (output_bfd, insn, p);
12786 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
12788 /* The TPREL16 relocs shouldn't really be used in shared
12789 libs as they will result in DT_TEXTREL being set, but
12790 support them anyway. */
12794 case R_PPC64_DTPREL16:
12795 case R_PPC64_DTPREL16_LO:
12796 case R_PPC64_DTPREL16_HI:
12797 case R_PPC64_DTPREL16_HA:
12798 case R_PPC64_DTPREL16_DS:
12799 case R_PPC64_DTPREL16_LO_DS:
12800 case R_PPC64_DTPREL16_HIGHER:
12801 case R_PPC64_DTPREL16_HIGHERA:
12802 case R_PPC64_DTPREL16_HIGHEST:
12803 case R_PPC64_DTPREL16_HIGHESTA:
12804 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
12807 case R_PPC64_DTPMOD64:
12812 case R_PPC64_TPREL64:
12813 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
12816 case R_PPC64_DTPREL64:
12817 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
12820 /* Relocations that may need to be propagated if this is a
12822 case R_PPC64_REL30:
12823 case R_PPC64_REL32:
12824 case R_PPC64_REL64:
12825 case R_PPC64_ADDR14:
12826 case R_PPC64_ADDR14_BRNTAKEN:
12827 case R_PPC64_ADDR14_BRTAKEN:
12828 case R_PPC64_ADDR16:
12829 case R_PPC64_ADDR16_DS:
12830 case R_PPC64_ADDR16_HA:
12831 case R_PPC64_ADDR16_HI:
12832 case R_PPC64_ADDR16_HIGHER:
12833 case R_PPC64_ADDR16_HIGHERA:
12834 case R_PPC64_ADDR16_HIGHEST:
12835 case R_PPC64_ADDR16_HIGHESTA:
12836 case R_PPC64_ADDR16_LO:
12837 case R_PPC64_ADDR16_LO_DS:
12838 case R_PPC64_ADDR24:
12839 case R_PPC64_ADDR32:
12840 case R_PPC64_ADDR64:
12841 case R_PPC64_UADDR16:
12842 case R_PPC64_UADDR32:
12843 case R_PPC64_UADDR64:
12845 if ((input_section->flags & SEC_ALLOC) == 0)
12848 if (NO_OPD_RELOCS && is_opd)
12853 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12854 || h->elf.root.type != bfd_link_hash_undefweak)
12855 && (must_be_dyn_reloc (info, r_type)
12856 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
12857 || (ELIMINATE_COPY_RELOCS
12860 && h->elf.dynindx != -1
12861 && !h->elf.non_got_ref
12862 && !h->elf.def_regular)
12865 ? h->elf.type == STT_GNU_IFUNC
12866 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
12868 bfd_boolean skip, relocate;
12872 /* When generating a dynamic object, these relocations
12873 are copied into the output file to be resolved at run
12879 out_off = _bfd_elf_section_offset (output_bfd, info,
12880 input_section, rel->r_offset);
12881 if (out_off == (bfd_vma) -1)
12883 else if (out_off == (bfd_vma) -2)
12884 skip = TRUE, relocate = TRUE;
12885 out_off += (input_section->output_section->vma
12886 + input_section->output_offset);
12887 outrel.r_offset = out_off;
12888 outrel.r_addend = rel->r_addend;
12890 /* Optimize unaligned reloc use. */
12891 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
12892 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
12893 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
12894 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
12895 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
12896 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
12897 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
12898 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
12899 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
12902 memset (&outrel, 0, sizeof outrel);
12903 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
12905 && r_type != R_PPC64_TOC)
12906 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
12909 /* This symbol is local, or marked to become local,
12910 or this is an opd section reloc which must point
12911 at a local function. */
12912 outrel.r_addend += relocation;
12913 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
12915 if (is_opd && h != NULL)
12917 /* Lie about opd entries. This case occurs
12918 when building shared libraries and we
12919 reference a function in another shared
12920 lib. The same thing happens for a weak
12921 definition in an application that's
12922 overridden by a strong definition in a
12923 shared lib. (I believe this is a generic
12924 bug in binutils handling of weak syms.)
12925 In these cases we won't use the opd
12926 entry in this lib. */
12927 unresolved_reloc = FALSE;
12930 && r_type == R_PPC64_ADDR64
12932 ? h->elf.type == STT_GNU_IFUNC
12933 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
12934 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12937 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12939 /* We need to relocate .opd contents for ld.so.
12940 Prelink also wants simple and consistent rules
12941 for relocs. This make all RELATIVE relocs have
12942 *r_offset equal to r_addend. */
12951 ? h->elf.type == STT_GNU_IFUNC
12952 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
12954 (*_bfd_error_handler)
12955 (_("%B(%A+0x%lx): relocation %s for indirect "
12956 "function %s unsupported"),
12959 (long) rel->r_offset,
12960 ppc64_elf_howto_table[r_type]->name,
12964 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
12966 else if (sec == NULL || sec->owner == NULL)
12968 bfd_set_error (bfd_error_bad_value);
12975 osec = sec->output_section;
12976 indx = elf_section_data (osec)->dynindx;
12980 if ((osec->flags & SEC_READONLY) == 0
12981 && htab->elf.data_index_section != NULL)
12982 osec = htab->elf.data_index_section;
12984 osec = htab->elf.text_index_section;
12985 indx = elf_section_data (osec)->dynindx;
12987 BFD_ASSERT (indx != 0);
12989 /* We are turning this relocation into one
12990 against a section symbol, so subtract out
12991 the output section's address but not the
12992 offset of the input section in the output
12994 outrel.r_addend -= osec->vma;
12997 outrel.r_info = ELF64_R_INFO (indx, r_type);
13001 sreloc = elf_section_data (input_section)->sreloc;
13002 if (!htab->elf.dynamic_sections_created)
13003 sreloc = htab->reliplt;
13004 if (sreloc == NULL)
13007 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
13010 loc = sreloc->contents;
13011 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
13012 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13014 /* If this reloc is against an external symbol, it will
13015 be computed at runtime, so there's no need to do
13016 anything now. However, for the sake of prelink ensure
13017 that the section contents are a known value. */
13020 unresolved_reloc = FALSE;
13021 /* The value chosen here is quite arbitrary as ld.so
13022 ignores section contents except for the special
13023 case of .opd where the contents might be accessed
13024 before relocation. Choose zero, as that won't
13025 cause reloc overflow. */
13028 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13029 to improve backward compatibility with older
13031 if (r_type == R_PPC64_ADDR64)
13032 addend = outrel.r_addend;
13033 /* Adjust pc_relative relocs to have zero in *r_offset. */
13034 else if (ppc64_elf_howto_table[r_type]->pc_relative)
13035 addend = (input_section->output_section->vma
13036 + input_section->output_offset
13043 case R_PPC64_GLOB_DAT:
13044 case R_PPC64_JMP_SLOT:
13045 case R_PPC64_JMP_IREL:
13046 case R_PPC64_RELATIVE:
13047 /* We shouldn't ever see these dynamic relocs in relocatable
13049 /* Fall through. */
13051 case R_PPC64_PLTGOT16:
13052 case R_PPC64_PLTGOT16_DS:
13053 case R_PPC64_PLTGOT16_HA:
13054 case R_PPC64_PLTGOT16_HI:
13055 case R_PPC64_PLTGOT16_LO:
13056 case R_PPC64_PLTGOT16_LO_DS:
13057 case R_PPC64_PLTREL32:
13058 case R_PPC64_PLTREL64:
13059 /* These ones haven't been implemented yet. */
13061 (*_bfd_error_handler)
13062 (_("%B: relocation %s is not supported for symbol %s."),
13064 ppc64_elf_howto_table[r_type]->name, sym_name);
13066 bfd_set_error (bfd_error_invalid_operation);
13071 /* Multi-instruction sequences that access the TOC can be
13072 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13073 to nop; addi rb,r2,x; */
13079 case R_PPC64_GOT_TLSLD16_HI:
13080 case R_PPC64_GOT_TLSGD16_HI:
13081 case R_PPC64_GOT_TPREL16_HI:
13082 case R_PPC64_GOT_DTPREL16_HI:
13083 case R_PPC64_GOT16_HI:
13084 case R_PPC64_TOC16_HI:
13085 /* These relocs would only be useful if building up an
13086 offset to later add to r2, perhaps in an indexed
13087 addressing mode instruction. Don't try to optimize.
13088 Unfortunately, the possibility of someone building up an
13089 offset like this or even with the HA relocs, means that
13090 we need to check the high insn when optimizing the low
13094 case R_PPC64_GOT_TLSLD16_HA:
13095 case R_PPC64_GOT_TLSGD16_HA:
13096 case R_PPC64_GOT_TPREL16_HA:
13097 case R_PPC64_GOT_DTPREL16_HA:
13098 case R_PPC64_GOT16_HA:
13099 case R_PPC64_TOC16_HA:
13100 /* nop is done later. */
13103 case R_PPC64_GOT_TLSLD16_LO:
13104 case R_PPC64_GOT_TLSGD16_LO:
13105 case R_PPC64_GOT_TPREL16_LO_DS:
13106 case R_PPC64_GOT_DTPREL16_LO_DS:
13107 case R_PPC64_GOT16_LO:
13108 case R_PPC64_GOT16_LO_DS:
13109 case R_PPC64_TOC16_LO:
13110 case R_PPC64_TOC16_LO_DS:
13111 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000)
13113 bfd_byte *p = contents + (rel->r_offset & ~3);
13114 insn = bfd_get_32 (input_bfd, p);
13115 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
13116 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
13117 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
13118 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
13119 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
13120 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
13121 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
13122 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
13123 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
13124 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
13125 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
13126 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
13127 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
13128 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
13129 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
13130 && (insn & 3) != 1)
13131 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
13132 && ((insn & 3) == 0 || (insn & 3) == 3)))
13134 unsigned int reg = (insn >> 16) & 0x1f;
13135 const Elf_Internal_Rela *ha;
13136 bfd_boolean match_addend;
13138 match_addend = (sym != NULL
13139 && ELF_ST_TYPE (sym->st_info) == STT_SECTION);
13140 ha = ha_reloc_match (relocs, rel, ®, match_addend,
13141 input_bfd, contents);
13144 insn &= ~(0x1f << 16);
13146 bfd_put_32 (input_bfd, insn, p);
13147 if (ha_opt == NULL)
13149 ha_opt = bfd_zmalloc (input_section->reloc_count);
13150 if (ha_opt == NULL)
13153 ha_opt[ha - relocs] = 1;
13156 /* If we don't find a matching high part insn,
13157 something is fishy. Refuse to nop any high
13158 part insn in this section. */
13165 /* Do any further special processing. */
13171 case R_PPC64_ADDR16_HA:
13172 case R_PPC64_REL16_HA:
13173 case R_PPC64_ADDR16_HIGHERA:
13174 case R_PPC64_ADDR16_HIGHESTA:
13175 case R_PPC64_TOC16_HA:
13176 case R_PPC64_SECTOFF_HA:
13177 case R_PPC64_TPREL16_HA:
13178 case R_PPC64_DTPREL16_HA:
13179 case R_PPC64_TPREL16_HIGHER:
13180 case R_PPC64_TPREL16_HIGHERA:
13181 case R_PPC64_TPREL16_HIGHEST:
13182 case R_PPC64_TPREL16_HIGHESTA:
13183 case R_PPC64_DTPREL16_HIGHER:
13184 case R_PPC64_DTPREL16_HIGHERA:
13185 case R_PPC64_DTPREL16_HIGHEST:
13186 case R_PPC64_DTPREL16_HIGHESTA:
13187 /* It's just possible that this symbol is a weak symbol
13188 that's not actually defined anywhere. In that case,
13189 'sec' would be NULL, and we should leave the symbol
13190 alone (it will be set to zero elsewhere in the link). */
13195 case R_PPC64_GOT16_HA:
13196 case R_PPC64_PLTGOT16_HA:
13197 case R_PPC64_PLT16_HA:
13198 case R_PPC64_GOT_TLSGD16_HA:
13199 case R_PPC64_GOT_TLSLD16_HA:
13200 case R_PPC64_GOT_TPREL16_HA:
13201 case R_PPC64_GOT_DTPREL16_HA:
13202 /* Add 0x10000 if sign bit in 0:15 is set.
13203 Bits 0:15 are not used. */
13207 case R_PPC64_ADDR16_DS:
13208 case R_PPC64_ADDR16_LO_DS:
13209 case R_PPC64_GOT16_DS:
13210 case R_PPC64_GOT16_LO_DS:
13211 case R_PPC64_PLT16_LO_DS:
13212 case R_PPC64_SECTOFF_DS:
13213 case R_PPC64_SECTOFF_LO_DS:
13214 case R_PPC64_TOC16_DS:
13215 case R_PPC64_TOC16_LO_DS:
13216 case R_PPC64_PLTGOT16_DS:
13217 case R_PPC64_PLTGOT16_LO_DS:
13218 case R_PPC64_GOT_TPREL16_DS:
13219 case R_PPC64_GOT_TPREL16_LO_DS:
13220 case R_PPC64_GOT_DTPREL16_DS:
13221 case R_PPC64_GOT_DTPREL16_LO_DS:
13222 case R_PPC64_TPREL16_DS:
13223 case R_PPC64_TPREL16_LO_DS:
13224 case R_PPC64_DTPREL16_DS:
13225 case R_PPC64_DTPREL16_LO_DS:
13226 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
13228 /* If this reloc is against an lq insn, then the value must be
13229 a multiple of 16. This is somewhat of a hack, but the
13230 "correct" way to do this by defining _DQ forms of all the
13231 _DS relocs bloats all reloc switches in this file. It
13232 doesn't seem to make much sense to use any of these relocs
13233 in data, so testing the insn should be safe. */
13234 if ((insn & (0x3f << 26)) == (56u << 26))
13236 if (((relocation + addend) & mask) != 0)
13238 (*_bfd_error_handler)
13239 (_("%B(%A+0x%lx): error: %s not a multiple of %u"),
13240 input_bfd, input_section, (long) rel->r_offset,
13241 ppc64_elf_howto_table[r_type]->name,
13243 bfd_set_error (bfd_error_bad_value);
13250 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13251 because such sections are not SEC_ALLOC and thus ld.so will
13252 not process them. */
13253 if (unresolved_reloc
13254 && !((input_section->flags & SEC_DEBUGGING) != 0
13255 && h->elf.def_dynamic))
13257 (*_bfd_error_handler)
13258 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
13261 (long) rel->r_offset,
13262 ppc64_elf_howto_table[(int) r_type]->name,
13263 h->elf.root.root.string);
13267 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
13275 if (r != bfd_reloc_ok)
13277 if (sym_name == NULL)
13278 sym_name = "(null)";
13279 if (r == bfd_reloc_overflow)
13284 && h->elf.root.type == bfd_link_hash_undefweak
13285 && ppc64_elf_howto_table[r_type]->pc_relative)
13287 /* Assume this is a call protected by other code that
13288 detects the symbol is undefined. If this is the case,
13289 we can safely ignore the overflow. If not, the
13290 program is hosed anyway, and a little warning isn't
13296 if (!((*info->callbacks->reloc_overflow)
13297 (info, (h ? &h->elf.root : NULL), sym_name,
13298 ppc64_elf_howto_table[r_type]->name,
13299 orig_addend, input_bfd, input_section, rel->r_offset)))
13304 (*_bfd_error_handler)
13305 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
13308 (long) rel->r_offset,
13309 ppc64_elf_howto_table[r_type]->name,
13317 if (ha_opt != NULL)
13321 unsigned char *opt = ha_opt;
13323 relend = relocs + input_section->reloc_count;
13324 for (; rel < relend; opt++, rel++)
13327 bfd_byte *p = contents + (rel->r_offset & ~3);
13328 bfd_put_32 (input_bfd, NOP, p);
13334 /* If we're emitting relocations, then shortly after this function
13335 returns, reloc offsets and addends for this section will be
13336 adjusted. Worse, reloc symbol indices will be for the output
13337 file rather than the input. Save a copy of the relocs for
13338 opd_entry_value. */
13339 if (is_opd && (info->emitrelocations || info->relocatable))
13342 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
13343 rel = bfd_alloc (input_bfd, amt);
13344 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
13345 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
13348 memcpy (rel, relocs, amt);
13353 /* Adjust the value of any local symbols in opd sections. */
13356 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
13357 const char *name ATTRIBUTE_UNUSED,
13358 Elf_Internal_Sym *elfsym,
13359 asection *input_sec,
13360 struct elf_link_hash_entry *h)
13362 struct _opd_sec_data *opd;
13369 opd = get_opd_info (input_sec);
13370 if (opd == NULL || opd->adjust == NULL)
13373 value = elfsym->st_value - input_sec->output_offset;
13374 if (!info->relocatable)
13375 value -= input_sec->output_section->vma;
13377 adjust = opd->adjust[value / 8];
13381 elfsym->st_value += adjust;
13385 /* Finish up dynamic symbol handling. We set the contents of various
13386 dynamic sections here. */
13389 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
13390 struct bfd_link_info *info,
13391 struct elf_link_hash_entry *h,
13392 Elf_Internal_Sym *sym)
13394 struct ppc_link_hash_table *htab;
13395 struct plt_entry *ent;
13396 Elf_Internal_Rela rela;
13399 htab = ppc_hash_table (info);
13403 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13404 if (ent->plt.offset != (bfd_vma) -1)
13406 /* This symbol has an entry in the procedure linkage
13407 table. Set it up. */
13408 if (!htab->elf.dynamic_sections_created
13409 || h->dynindx == -1)
13411 BFD_ASSERT (h->type == STT_GNU_IFUNC
13413 && (h->root.type == bfd_link_hash_defined
13414 || h->root.type == bfd_link_hash_defweak));
13415 rela.r_offset = (htab->iplt->output_section->vma
13416 + htab->iplt->output_offset
13417 + ent->plt.offset);
13418 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
13419 rela.r_addend = (h->root.u.def.value
13420 + h->root.u.def.section->output_offset
13421 + h->root.u.def.section->output_section->vma
13423 loc = (htab->reliplt->contents
13424 + (htab->reliplt->reloc_count++
13425 * sizeof (Elf64_External_Rela)));
13429 rela.r_offset = (htab->plt->output_section->vma
13430 + htab->plt->output_offset
13431 + ent->plt.offset);
13432 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
13433 rela.r_addend = ent->addend;
13434 loc = (htab->relplt->contents
13435 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
13436 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
13438 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13443 /* This symbol needs a copy reloc. Set it up. */
13445 if (h->dynindx == -1
13446 || (h->root.type != bfd_link_hash_defined
13447 && h->root.type != bfd_link_hash_defweak)
13448 || htab->relbss == NULL)
13451 rela.r_offset = (h->root.u.def.value
13452 + h->root.u.def.section->output_section->vma
13453 + h->root.u.def.section->output_offset);
13454 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
13456 loc = htab->relbss->contents;
13457 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
13458 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13461 /* Mark some specially defined symbols as absolute. */
13462 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
13463 sym->st_shndx = SHN_ABS;
13468 /* Used to decide how to sort relocs in an optimal manner for the
13469 dynamic linker, before writing them out. */
13471 static enum elf_reloc_type_class
13472 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
13474 enum elf_ppc64_reloc_type r_type;
13476 r_type = ELF64_R_TYPE (rela->r_info);
13479 case R_PPC64_RELATIVE:
13480 return reloc_class_relative;
13481 case R_PPC64_JMP_SLOT:
13482 return reloc_class_plt;
13484 return reloc_class_copy;
13486 return reloc_class_normal;
13490 /* Finish up the dynamic sections. */
13493 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
13494 struct bfd_link_info *info)
13496 struct ppc_link_hash_table *htab;
13500 htab = ppc_hash_table (info);
13504 dynobj = htab->elf.dynobj;
13505 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
13507 if (htab->elf.dynamic_sections_created)
13509 Elf64_External_Dyn *dyncon, *dynconend;
13511 if (sdyn == NULL || htab->got == NULL)
13514 dyncon = (Elf64_External_Dyn *) sdyn->contents;
13515 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
13516 for (; dyncon < dynconend; dyncon++)
13518 Elf_Internal_Dyn dyn;
13521 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
13528 case DT_PPC64_GLINK:
13530 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13531 /* We stupidly defined DT_PPC64_GLINK to be the start
13532 of glink rather than the first entry point, which is
13533 what ld.so needs, and now have a bigger stub to
13534 support automatic multiple TOCs. */
13535 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
13539 s = bfd_get_section_by_name (output_bfd, ".opd");
13542 dyn.d_un.d_ptr = s->vma;
13545 case DT_PPC64_OPDSZ:
13546 s = bfd_get_section_by_name (output_bfd, ".opd");
13549 dyn.d_un.d_val = s->size;
13554 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13559 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
13563 dyn.d_un.d_val = htab->relplt->size;
13567 /* Don't count procedure linkage table relocs in the
13568 overall reloc count. */
13572 dyn.d_un.d_val -= s->size;
13576 /* We may not be using the standard ELF linker script.
13577 If .rela.plt is the first .rela section, we adjust
13578 DT_RELA to not include it. */
13582 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
13584 dyn.d_un.d_ptr += s->size;
13588 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
13592 if (htab->got != NULL && htab->got->size != 0)
13594 /* Fill in the first entry in the global offset table.
13595 We use it to hold the link-time TOCbase. */
13596 bfd_put_64 (output_bfd,
13597 elf_gp (output_bfd) + TOC_BASE_OFF,
13598 htab->got->contents);
13600 /* Set .got entry size. */
13601 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
13604 if (htab->plt != NULL && htab->plt->size != 0)
13606 /* Set .plt entry size. */
13607 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
13611 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13612 brlt ourselves if emitrelocations. */
13613 if (htab->brlt != NULL
13614 && htab->brlt->reloc_count != 0
13615 && !_bfd_elf_link_output_relocs (output_bfd,
13617 elf_section_data (htab->brlt)->rela.hdr,
13618 elf_section_data (htab->brlt)->relocs,
13622 if (htab->glink != NULL
13623 && htab->glink->reloc_count != 0
13624 && !_bfd_elf_link_output_relocs (output_bfd,
13626 elf_section_data (htab->glink)->rela.hdr,
13627 elf_section_data (htab->glink)->relocs,
13631 /* We need to handle writing out multiple GOT sections ourselves,
13632 since we didn't add them to DYNOBJ. We know dynobj is the first
13634 while ((dynobj = dynobj->link_next) != NULL)
13638 if (!is_ppc64_elf (dynobj))
13641 s = ppc64_elf_tdata (dynobj)->got;
13644 && s->output_section != bfd_abs_section_ptr
13645 && !bfd_set_section_contents (output_bfd, s->output_section,
13646 s->contents, s->output_offset,
13649 s = ppc64_elf_tdata (dynobj)->relgot;
13652 && s->output_section != bfd_abs_section_ptr
13653 && !bfd_set_section_contents (output_bfd, s->output_section,
13654 s->contents, s->output_offset,
13662 #include "elf64-target.h"