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0afcef53 L |
1 | /* x86 specific support for ELF |
2 | Copyright (C) 2017 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
19 | MA 02110-1301, USA. */ | |
20 | ||
21 | #include "sysdep.h" | |
22 | #include "bfd.h" | |
23 | #include "bfdlink.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "bfd_stdint.h" | |
0afcef53 L |
27 | #include "hashtab.h" |
28 | ||
aa595247 L |
29 | #define PLT_CIE_LENGTH 20 |
30 | #define PLT_FDE_LENGTH 36 | |
31 | #define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8 | |
32 | #define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12 | |
33 | ||
765e526c L |
34 | #define ABI_64_P(abfd) \ |
35 | (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64) | |
36 | ||
0afcef53 L |
37 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
38 | copying dynamic variables from a shared lib into an app's dynbss | |
39 | section, and instead use a dynamic relocation to point into the | |
40 | shared lib. */ | |
41 | #define ELIMINATE_COPY_RELOCS 1 | |
42 | ||
43 | #define elf_x86_hash_table(p, id) \ | |
1cf58434 AM |
44 | (is_elf_hash_table ((p)->hash) \ |
45 | && elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) == (id) \ | |
0afcef53 L |
46 | ? ((struct elf_x86_link_hash_table *) ((p)->hash)) : NULL) |
47 | ||
6999821f L |
48 | /* Will references to this symbol always be local in this object? */ |
49 | #define SYMBOL_REFERENCES_LOCAL_P(INFO, H) \ | |
50 | _bfd_x86_elf_link_symbol_references_local ((INFO), (H)) | |
51 | ||
0afcef53 L |
52 | /* Is a undefined weak symbol which is resolved to 0. Reference to an |
53 | undefined weak symbol is resolved to 0 when building executable if | |
54 | it isn't dynamic and | |
55 | 1. Has non-GOT/non-PLT relocations in text section. Or | |
56 | 2. Has no GOT/PLT relocation. | |
57 | Local undefined weak symbol is always resolved to 0. | |
58 | */ | |
c5bce5c6 | 59 | #define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, EH) \ |
0afcef53 | 60 | ((EH)->elf.root.type == bfd_link_hash_undefweak \ |
6999821f | 61 | && (SYMBOL_REFERENCES_LOCAL_P ((INFO), &(EH)->elf) \ |
0afcef53 | 62 | || (bfd_link_executable (INFO) \ |
c5bce5c6 L |
63 | && (!(EH)->has_got_reloc \ |
64 | || (EH)->has_non_got_reloc)))) | |
0afcef53 L |
65 | |
66 | /* Should copy relocation be generated for a symbol. Don't generate | |
67 | copy relocation against a protected symbol defined in a shared | |
68 | object with GNU_PROPERTY_NO_COPY_ON_PROTECTED. */ | |
69 | #define SYMBOL_NO_COPYRELOC(INFO, EH) \ | |
70 | ((EH)->def_protected \ | |
71 | && ((EH)->elf.root.type == bfd_link_hash_defined \ | |
72 | || (EH)->elf.root.type == bfd_link_hash_defweak) \ | |
73 | && elf_has_no_copy_on_protected ((EH)->elf.root.u.def.section->owner) \ | |
74 | && ((EH)->elf.root.u.def.section->owner->flags & DYNAMIC) != 0 \ | |
75 | && ((EH)->elf.root.u.def.section->flags & SEC_CODE) == 0) | |
76 | ||
51537393 L |
77 | /* TRUE if TLS IE->LE transition is OK. */ |
78 | #define TLS_TRANSITION_IE_TO_LE_P(INFO, H, TLS_TYPE) \ | |
79 | (bfd_link_executable (INFO) \ | |
80 | && (H) != NULL \ | |
81 | && (H)->dynindx == -1 \ | |
82 | && (TLS_TYPE & GOT_TLS_IE)) | |
83 | ||
0afcef53 L |
84 | /* x86 ELF linker hash entry. */ |
85 | ||
86 | struct elf_x86_link_hash_entry | |
87 | { | |
88 | struct elf_link_hash_entry elf; | |
89 | ||
90 | /* Track dynamic relocs copied for this symbol. */ | |
91 | struct elf_dyn_relocs *dyn_relocs; | |
92 | ||
93 | unsigned char tls_type; | |
94 | ||
95 | /* TRUE if symbol has GOT or PLT relocations. */ | |
96 | unsigned int has_got_reloc : 1; | |
97 | ||
98 | /* TRUE if symbol has non-GOT/non-PLT relocations in text sections. */ | |
99 | unsigned int has_non_got_reloc : 1; | |
100 | ||
101 | /* Don't call finish_dynamic_symbol on this symbol. */ | |
102 | unsigned int no_finish_dynamic_symbol : 1; | |
103 | ||
104 | /* TRUE if symbol is __tls_get_addr. */ | |
105 | unsigned int tls_get_addr : 1; | |
106 | ||
107 | /* TRUE if symbol is defined as a protected symbol. */ | |
108 | unsigned int def_protected : 1; | |
109 | ||
6999821f L |
110 | /* 0: Symbol references are unknown. |
111 | 1: Symbol references aren't local. | |
112 | 2: Symbol references are local. | |
113 | */ | |
114 | unsigned int local_ref : 2; | |
115 | ||
0a27fed7 L |
116 | /* TRUE if symbol is defined by linker. */ |
117 | unsigned int linker_def : 1; | |
118 | ||
f47432d4 | 119 | /* TRUE if symbol is referenced by R_386_GOTOFF relocation. This is |
c7df954f | 120 | only used by i386. */ |
0afcef53 L |
121 | unsigned int gotoff_ref : 1; |
122 | ||
123 | /* TRUE if a weak symbol with a real definition needs a copy reloc. | |
124 | When there is a weak symbol with a real definition, the processor | |
125 | independent code will have arranged for us to see the real | |
126 | definition first. We need to copy the needs_copy bit from the | |
127 | real definition and check it when allowing copy reloc in PIE. This | |
128 | is only used by x86-64. */ | |
129 | unsigned int needs_copy : 1; | |
130 | ||
131 | /* Reference count of C/C++ function pointer relocations in read-write | |
132 | section which can be resolved at run-time. */ | |
133 | bfd_signed_vma func_pointer_refcount; | |
134 | ||
135 | /* Information about the GOT PLT entry. Filled when there are both | |
136 | GOT and PLT relocations against the same function. */ | |
137 | union gotplt_union plt_got; | |
138 | ||
139 | /* Information about the second PLT entry. */ | |
140 | union gotplt_union plt_second; | |
141 | ||
142 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, | |
143 | starting at the end of the jump table. */ | |
144 | bfd_vma tlsdesc_got; | |
145 | }; | |
146 | ||
765e526c L |
147 | struct elf_x86_lazy_plt_layout |
148 | { | |
149 | /* The first entry in an absolute lazy procedure linkage table looks | |
150 | like this. */ | |
151 | const bfd_byte *plt0_entry; | |
152 | unsigned int plt0_entry_size; /* Size of PLT0 entry. */ | |
153 | ||
154 | /* Later entries in an absolute lazy procedure linkage table look | |
155 | like this. */ | |
156 | const bfd_byte *plt_entry; | |
157 | unsigned int plt_entry_size; /* Size of each PLT entry. */ | |
158 | ||
159 | /* Offsets into plt0_entry that are to be replaced with GOT[1] and | |
160 | GOT[2]. */ | |
161 | unsigned int plt0_got1_offset; | |
162 | unsigned int plt0_got2_offset; | |
163 | ||
164 | /* Offset of the end of the PC-relative instruction containing | |
165 | plt0_got2_offset. This is for x86-64 only. */ | |
166 | unsigned int plt0_got2_insn_end; | |
167 | ||
168 | /* Offsets into plt_entry that are to be replaced with... */ | |
169 | unsigned int plt_got_offset; /* ... address of this symbol in .got. */ | |
170 | unsigned int plt_reloc_offset; /* ... offset into relocation table. */ | |
171 | unsigned int plt_plt_offset; /* ... offset to start of .plt. */ | |
172 | ||
173 | /* Length of the PC-relative instruction containing plt_got_offset. | |
174 | This is used for x86-64 only. */ | |
175 | unsigned int plt_got_insn_size; | |
176 | ||
177 | /* Offset of the end of the PC-relative jump to plt0_entry. This is | |
178 | used for x86-64 only. */ | |
179 | unsigned int plt_plt_insn_end; | |
180 | ||
181 | /* Offset into plt_entry where the initial value of the GOT entry | |
182 | points. */ | |
183 | unsigned int plt_lazy_offset; | |
184 | ||
185 | /* The first entry in a PIC lazy procedure linkage table looks like | |
a6798bab | 186 | this. */ |
765e526c L |
187 | const bfd_byte *pic_plt0_entry; |
188 | ||
189 | /* Subsequent entries in a PIC lazy procedure linkage table look | |
a6798bab | 190 | like this. */ |
765e526c L |
191 | const bfd_byte *pic_plt_entry; |
192 | ||
193 | /* .eh_frame covering the lazy .plt section. */ | |
194 | const bfd_byte *eh_frame_plt; | |
195 | unsigned int eh_frame_plt_size; | |
196 | }; | |
197 | ||
198 | struct elf_x86_non_lazy_plt_layout | |
199 | { | |
200 | /* Entries in an absolute non-lazy procedure linkage table look like | |
201 | this. */ | |
202 | const bfd_byte *plt_entry; | |
a6798bab | 203 | /* Entries in a PIC non-lazy procedure linkage table look like this. */ |
765e526c L |
204 | const bfd_byte *pic_plt_entry; |
205 | ||
206 | unsigned int plt_entry_size; /* Size of each PLT entry. */ | |
207 | ||
208 | /* Offsets into plt_entry that are to be replaced with... */ | |
209 | unsigned int plt_got_offset; /* ... address of this symbol in .got. */ | |
210 | ||
211 | /* Length of the PC-relative instruction containing plt_got_offset. | |
212 | This is used for x86-64 only. */ | |
213 | unsigned int plt_got_insn_size; | |
214 | ||
215 | /* .eh_frame covering the non-lazy .plt section. */ | |
216 | const bfd_byte *eh_frame_plt; | |
217 | unsigned int eh_frame_plt_size; | |
218 | }; | |
219 | ||
220 | struct elf_x86_plt_layout | |
221 | { | |
222 | /* The first entry in a lazy procedure linkage table looks like this. | |
223 | This is only used for i386 where absolute PLT0 and PIC PLT0 are | |
224 | different. */ | |
225 | const bfd_byte *plt0_entry; | |
226 | /* Entries in a procedure linkage table look like this. */ | |
227 | const bfd_byte *plt_entry; | |
228 | unsigned int plt_entry_size; /* Size of each PLT entry. */ | |
229 | ||
230 | /* 1 has PLT0. */ | |
231 | unsigned int has_plt0; | |
232 | ||
233 | /* Offsets into plt_entry that are to be replaced with... */ | |
234 | unsigned int plt_got_offset; /* ... address of this symbol in .got. */ | |
235 | ||
236 | /* Length of the PC-relative instruction containing plt_got_offset. | |
237 | This is only used for x86-64. */ | |
238 | unsigned int plt_got_insn_size; | |
239 | ||
240 | /* .eh_frame covering the .plt section. */ | |
241 | const bfd_byte *eh_frame_plt; | |
242 | unsigned int eh_frame_plt_size; | |
243 | }; | |
244 | ||
6b9553e2 | 245 | /* Values in tls_type of x86 ELF linker hash entry. */ |
0afcef53 L |
246 | #define GOT_UNKNOWN 0 |
247 | #define GOT_NORMAL 1 | |
248 | #define GOT_TLS_GD 2 | |
6b9553e2 L |
249 | #define GOT_TLS_IE 4 |
250 | #define GOT_TLS_IE_POS 5 | |
251 | #define GOT_TLS_IE_NEG 6 | |
252 | #define GOT_TLS_IE_BOTH 7 | |
253 | #define GOT_TLS_GDESC 8 | |
254 | #define GOT_TLS_GD_BOTH_P(type) \ | |
255 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
256 | #define GOT_TLS_GD_P(type) \ | |
257 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
258 | #define GOT_TLS_GDESC_P(type) \ | |
259 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
260 | #define GOT_TLS_GD_ANY_P(type) \ | |
261 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
0afcef53 L |
262 | |
263 | #define elf_x86_hash_entry(ent) \ | |
264 | ((struct elf_x86_link_hash_entry *)(ent)) | |
265 | ||
266 | /* x86 ELF linker hash table. */ | |
267 | ||
268 | struct elf_x86_link_hash_table | |
269 | { | |
270 | struct elf_link_hash_table elf; | |
271 | ||
272 | /* Short-cuts to get to dynamic linker sections. */ | |
273 | asection *interp; | |
274 | asection *plt_eh_frame; | |
275 | asection *plt_second; | |
276 | asection *plt_second_eh_frame; | |
277 | asection *plt_got; | |
278 | asection *plt_got_eh_frame; | |
279 | ||
765e526c L |
280 | /* Parameters describing PLT generation, lazy or non-lazy. */ |
281 | struct elf_x86_plt_layout plt; | |
282 | ||
283 | /* Parameters describing lazy PLT generation. */ | |
284 | const struct elf_x86_lazy_plt_layout *lazy_plt; | |
285 | ||
286 | /* Parameters describing non-lazy PLT generation. */ | |
287 | const struct elf_x86_non_lazy_plt_layout *non_lazy_plt; | |
288 | ||
0afcef53 L |
289 | union |
290 | { | |
291 | bfd_signed_vma refcount; | |
292 | bfd_vma offset; | |
293 | } tls_ld_or_ldm_got; | |
294 | ||
295 | /* The amount of space used by the jump slots in the GOT. */ | |
296 | bfd_vma sgotplt_jump_table_size; | |
297 | ||
298 | /* Small local sym cache. */ | |
299 | struct sym_cache sym_cache; | |
300 | ||
301 | /* _TLS_MODULE_BASE_ symbol. */ | |
302 | struct bfd_link_hash_entry *tls_module_base; | |
303 | ||
304 | /* Used by local STT_GNU_IFUNC symbols. */ | |
305 | htab_t loc_hash_table; | |
306 | void * loc_hash_memory; | |
307 | ||
0afcef53 L |
308 | /* The offset into sgot of the GOT entry used by the PLT entry |
309 | above. */ | |
310 | bfd_vma tlsdesc_got; | |
311 | ||
312 | /* The index of the next R_X86_64_JUMP_SLOT entry in .rela.plt. */ | |
313 | bfd_vma next_jump_slot_index; | |
314 | /* The index of the next R_X86_64_IRELATIVE entry in .rela.plt. */ | |
315 | bfd_vma next_irelative_index; | |
316 | ||
317 | /* TRUE if there are dynamic relocs against IFUNC symbols that apply | |
318 | to read-only sections. */ | |
319 | bfd_boolean readonly_dynrelocs_against_ifunc; | |
320 | ||
2926eb2c L |
321 | /* TRUE if this is a VxWorks x86 target. This is only used for |
322 | i386. */ | |
eeb2f20a L |
323 | bfd_boolean is_vxworks; |
324 | ||
765e526c L |
325 | /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. |
326 | This is used for i386 only. */ | |
327 | asection *srelplt2; | |
328 | ||
329 | /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. This | |
2926eb2c | 330 | is only used for i386. */ |
765e526c L |
331 | bfd_vma next_tls_desc_index; |
332 | ||
2926eb2c L |
333 | /* The offset into splt of the PLT entry for the TLS descriptor |
334 | resolver. Special values are 0, if not necessary (or not found | |
335 | to be necessary yet), and -1 if needed but not determined | |
336 | yet. This is only used for x86-64. */ | |
337 | bfd_vma tlsdesc_plt; | |
338 | ||
0afcef53 L |
339 | bfd_vma (*r_info) (bfd_vma, bfd_vma); |
340 | bfd_vma (*r_sym) (bfd_vma); | |
5e2ac45d | 341 | bfd_boolean (*is_reloc_section) (const char *); |
fe53b4a4 | 342 | enum elf_target_id target_id; |
503294e7 | 343 | unsigned int sizeof_reloc; |
5e2ac45d L |
344 | unsigned int dt_reloc; |
345 | unsigned int dt_reloc_sz; | |
346 | unsigned int dt_reloc_ent; | |
9ff114ca | 347 | unsigned int got_entry_size; |
0afcef53 L |
348 | unsigned int pointer_r_type; |
349 | int dynamic_interpreter_size; | |
350 | const char *dynamic_interpreter; | |
351 | const char *tls_get_addr; | |
352 | }; | |
353 | ||
1de031c8 | 354 | struct elf_x86_init_table |
a6798bab L |
355 | { |
356 | /* The lazy PLT layout. */ | |
357 | const struct elf_x86_lazy_plt_layout *lazy_plt; | |
358 | ||
359 | /* The non-lazy PLT layout. */ | |
360 | const struct elf_x86_non_lazy_plt_layout *non_lazy_plt; | |
361 | ||
362 | /* The lazy PLT layout for IBT. */ | |
363 | const struct elf_x86_lazy_plt_layout *lazy_ibt_plt; | |
364 | ||
365 | /* The non-lazy PLT layout for IBT. */ | |
366 | const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt; | |
367 | ||
c6295c22 | 368 | /* TRUE if this is a normal x86 target. */ |
a6798bab L |
369 | bfd_boolean normal_target; |
370 | ||
371 | /* TRUE if this is a VxWorks x86 target. */ | |
372 | bfd_boolean is_vxworks; | |
7a382c1c L |
373 | |
374 | bfd_vma (*r_info) (bfd_vma, bfd_vma); | |
375 | bfd_vma (*r_sym) (bfd_vma); | |
a6798bab L |
376 | }; |
377 | ||
0afcef53 L |
378 | struct elf_x86_obj_tdata |
379 | { | |
380 | struct elf_obj_tdata root; | |
381 | ||
382 | /* tls_type for each local got entry. */ | |
383 | char *local_got_tls_type; | |
384 | ||
385 | /* GOTPLT entries for TLS descriptors. */ | |
386 | bfd_vma *local_tlsdesc_gotent; | |
387 | }; | |
388 | ||
f493882d L |
389 | enum elf_x86_plt_type |
390 | { | |
391 | plt_non_lazy = 0, | |
392 | plt_lazy = 1 << 0, | |
393 | plt_pic = 1 << 1, | |
394 | plt_second = 1 << 2, | |
395 | plt_unknown = -1 | |
396 | }; | |
397 | ||
398 | struct elf_x86_plt | |
399 | { | |
400 | const char *name; | |
401 | asection *sec; | |
402 | bfd_byte *contents; | |
403 | enum elf_x86_plt_type type; | |
404 | unsigned int plt_got_offset; | |
405 | unsigned int plt_entry_size; | |
406 | unsigned int plt_got_insn_size; /* Only used for x86-64. */ | |
407 | long count; | |
408 | }; | |
409 | ||
0afcef53 L |
410 | #define elf_x86_tdata(abfd) \ |
411 | ((struct elf_x86_obj_tdata *) (abfd)->tdata.any) | |
412 | ||
413 | #define elf_x86_local_got_tls_type(abfd) \ | |
414 | (elf_x86_tdata (abfd)->local_got_tls_type) | |
415 | ||
416 | #define elf_x86_local_tlsdesc_gotent(abfd) \ | |
417 | (elf_x86_tdata (abfd)->local_tlsdesc_gotent) | |
418 | ||
9ff114ca L |
419 | #define elf_x86_compute_jump_table_size(htab) \ |
420 | ((htab)->elf.srelplt->reloc_count * (htab)->got_entry_size) | |
421 | ||
fe53b4a4 L |
422 | #define is_x86_elf(bfd, htab) \ |
423 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
424 | && elf_tdata (bfd) != NULL \ | |
425 | && elf_object_id (bfd) == (htab)->target_id) | |
426 | ||
39946cc2 L |
427 | extern bfd_boolean _bfd_x86_elf_mkobject |
428 | (bfd *); | |
429 | ||
0afcef53 L |
430 | extern void _bfd_x86_elf_set_tls_module_base |
431 | (struct bfd_link_info *); | |
432 | ||
433 | extern bfd_vma _bfd_x86_elf_dtpoff_base | |
434 | (struct bfd_link_info *); | |
435 | ||
436 | extern bfd_boolean _bfd_x86_elf_readonly_dynrelocs | |
437 | (struct elf_link_hash_entry *, void *); | |
438 | ||
439 | extern struct elf_link_hash_entry * _bfd_elf_x86_get_local_sym_hash | |
440 | (struct elf_x86_link_hash_table *, bfd *, const Elf_Internal_Rela *, | |
441 | bfd_boolean); | |
442 | ||
443 | extern hashval_t _bfd_x86_elf_local_htab_hash | |
444 | (const void *); | |
445 | ||
446 | extern int _bfd_x86_elf_local_htab_eq | |
447 | (const void *, const void *); | |
448 | ||
449 | extern struct bfd_hash_entry * _bfd_x86_elf_link_hash_newfunc | |
450 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); | |
451 | ||
765e526c | 452 | extern struct bfd_link_hash_table * _bfd_x86_elf_link_hash_table_create |
0afcef53 L |
453 | (bfd *); |
454 | ||
455 | extern int _bfd_x86_elf_compare_relocs | |
456 | (const void *, const void *); | |
457 | ||
458 | extern bfd_boolean _bfd_x86_elf_link_check_relocs | |
459 | (bfd *, struct bfd_link_info *); | |
460 | ||
5e2ac45d L |
461 | extern bfd_boolean _bfd_x86_elf_size_dynamic_sections |
462 | (bfd *, struct bfd_link_info *); | |
463 | ||
0afcef53 L |
464 | extern bfd_boolean _bfd_x86_elf_always_size_sections |
465 | (bfd *, struct bfd_link_info *); | |
466 | ||
467 | extern void _bfd_x86_elf_merge_symbol_attribute | |
468 | (struct elf_link_hash_entry *, const Elf_Internal_Sym *, | |
469 | bfd_boolean, bfd_boolean); | |
470 | ||
471 | extern void _bfd_x86_elf_copy_indirect_symbol | |
472 | (struct bfd_link_info *, struct elf_link_hash_entry *, | |
473 | struct elf_link_hash_entry *); | |
474 | ||
475 | extern bfd_boolean _bfd_x86_elf_fixup_symbol | |
476 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
477 | ||
478 | extern bfd_boolean _bfd_x86_elf_hash_symbol | |
479 | (struct elf_link_hash_entry *); | |
480 | ||
eeb2f20a L |
481 | extern bfd_boolean _bfd_x86_elf_adjust_dynamic_symbol |
482 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
483 | ||
6999821f L |
484 | extern bfd_boolean _bfd_x86_elf_link_symbol_references_local |
485 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
486 | ||
4f501a24 L |
487 | extern asection * _bfd_x86_elf_gc_mark_hook |
488 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | |
489 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
490 | ||
f493882d L |
491 | extern long _bfd_x86_elf_get_synthetic_symtab |
492 | (bfd *, long, long, bfd_vma, struct elf_x86_plt [], asymbol **, | |
493 | asymbol **); | |
494 | ||
0afcef53 L |
495 | extern enum elf_property_kind _bfd_x86_elf_parse_gnu_properties |
496 | (bfd *, unsigned int, bfd_byte *, unsigned int); | |
497 | ||
498 | extern bfd_boolean _bfd_x86_elf_merge_gnu_properties | |
499 | (struct bfd_link_info *, bfd *, elf_property *, elf_property *); | |
500 | ||
a6798bab | 501 | extern bfd * _bfd_x86_elf_link_setup_gnu_properties |
1de031c8 | 502 | (struct bfd_link_info *, struct elf_x86_init_table *); |
a6798bab | 503 | |
39946cc2 L |
504 | #define bfd_elf64_mkobject \ |
505 | _bfd_x86_elf_mkobject | |
506 | #define bfd_elf32_mkobject \ | |
507 | _bfd_x86_elf_mkobject | |
765e526c L |
508 | #define bfd_elf64_bfd_link_hash_table_create \ |
509 | _bfd_x86_elf_link_hash_table_create | |
510 | #define bfd_elf32_bfd_link_hash_table_create \ | |
511 | _bfd_x86_elf_link_hash_table_create | |
0afcef53 L |
512 | #define bfd_elf64_bfd_link_check_relocs \ |
513 | _bfd_x86_elf_link_check_relocs | |
514 | #define bfd_elf32_bfd_link_check_relocs \ | |
515 | _bfd_x86_elf_link_check_relocs | |
516 | ||
5e2ac45d L |
517 | #define elf_backend_size_dynamic_sections \ |
518 | _bfd_x86_elf_size_dynamic_sections | |
0afcef53 L |
519 | #define elf_backend_always_size_sections \ |
520 | _bfd_x86_elf_always_size_sections | |
521 | #define elf_backend_merge_symbol_attribute \ | |
522 | _bfd_x86_elf_merge_symbol_attribute | |
523 | #define elf_backend_copy_indirect_symbol \ | |
524 | _bfd_x86_elf_copy_indirect_symbol | |
525 | #define elf_backend_fixup_symbol \ | |
526 | _bfd_x86_elf_fixup_symbol | |
527 | #define elf_backend_hash_symbol \ | |
528 | _bfd_x86_elf_hash_symbol | |
eeb2f20a L |
529 | #define elf_backend_adjust_dynamic_symbol \ |
530 | _bfd_x86_elf_adjust_dynamic_symbol | |
4f501a24 L |
531 | #define elf_backend_gc_mark_hook \ |
532 | _bfd_x86_elf_gc_mark_hook | |
0afcef53 L |
533 | #define elf_backend_omit_section_dynsym \ |
534 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
535 | #define elf_backend_parse_gnu_properties \ | |
536 | _bfd_x86_elf_parse_gnu_properties | |
537 | #define elf_backend_merge_gnu_properties \ | |
538 | _bfd_x86_elf_merge_gnu_properties |