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252b5132 | 1 | /* BFD back-end data structures for ELF files. |
250d07de | 2 | Copyright (C) 1992-2021 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Cygnus Support. |
4 | ||
5e8d7549 | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
5e8d7549 NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
5e8d7549 | 10 | (at your option) any later version. |
252b5132 | 11 | |
5e8d7549 NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
5e8d7549 NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 RH |
21 | |
22 | #ifndef _LIBELF_H_ | |
23 | #define _LIBELF_H_ 1 | |
24 | ||
25 | #include "elf/common.h" | |
252b5132 | 26 | #include "elf/external.h" |
4fbb74a6 | 27 | #include "elf/internal.h" |
252b5132 RH |
28 | #include "bfdlink.h" |
29 | ||
43e05cd4 AM |
30 | #ifndef ENABLE_CHECKING |
31 | #define ENABLE_CHECKING 0 | |
32 | #endif | |
33 | ||
55172d69 PA |
34 | #ifdef __cplusplus |
35 | extern "C" { | |
36 | #endif | |
37 | ||
d9bc7a44 | 38 | /* The number of entries in a section is its size divided by the size |
51b64d56 | 39 | of a single entry. This is normally only applicable to reloc and |
ce98a316 NC |
40 | symbol table sections. |
41 | PR 9934: It is possible to have relocations that do not refer to | |
42 | symbols, thus it is also possible to have a relocation section in | |
43 | an object file, but no symbol table. */ | |
44 | #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0) | |
d9bc7a44 | 45 | |
252b5132 RH |
46 | /* If size isn't specified as 64 or 32, NAME macro should fail. */ |
47 | #ifndef NAME | |
c39a58e6 AM |
48 | #if ARCH_SIZE == 64 |
49 | #define NAME(x, y) x ## 64 ## _ ## y | |
252b5132 | 50 | #endif |
c39a58e6 AM |
51 | #if ARCH_SIZE == 32 |
52 | #define NAME(x, y) x ## 32 ## _ ## y | |
252b5132 RH |
53 | #endif |
54 | #endif | |
55 | ||
56 | #ifndef NAME | |
c39a58e6 | 57 | #define NAME(x, y) x ## NOSIZE ## _ ## y |
252b5132 RH |
58 | #endif |
59 | ||
60 | #define ElfNAME(X) NAME(Elf,X) | |
61 | #define elfNAME(X) NAME(elf,X) | |
62 | ||
63 | /* Information held for an ELF symbol. The first field is the | |
64 | corresponding asymbol. Every symbol is an ELF file is actually a | |
65 | pointer to this structure, although it is often handled as a | |
66 | pointer to an asymbol. */ | |
67 | ||
68 | typedef struct | |
69 | { | |
70 | /* The BFD symbol. */ | |
71 | asymbol symbol; | |
72 | /* ELF symbol information. */ | |
73 | Elf_Internal_Sym internal_elf_sym; | |
74 | /* Backend specific information. */ | |
75 | union | |
76 | { | |
77 | unsigned int hppa_arg_reloc; | |
c39a58e6 AM |
78 | void *mips_extr; |
79 | void *any; | |
252b5132 RH |
80 | } |
81 | tc_data; | |
82 | ||
83 | /* Version information. This is from an Elf_Internal_Versym | |
84 | structure in a SHT_GNU_versym section. It is zero if there is no | |
85 | version information. */ | |
86 | unsigned short version; | |
87 | ||
88 | } elf_symbol_type; | |
89 | \f | |
2b0f7ef9 | 90 | struct elf_strtab_hash; |
5cab59f6 AM |
91 | struct got_entry; |
92 | struct plt_entry; | |
2b0f7ef9 | 93 | |
a50b1753 NC |
94 | union gotplt_union |
95 | { | |
96 | bfd_signed_vma refcount; | |
97 | bfd_vma offset; | |
98 | struct got_entry *glist; | |
99 | struct plt_entry *plist; | |
100 | }; | |
101 | ||
102 | struct elf_link_virtual_table_entry | |
103 | { | |
104 | /* Virtual table entry use information. This array is nominally of size | |
105 | size/sizeof(target_void_pointer), though we have to be able to assume | |
106 | and track a size while the symbol is still undefined. It is indexed | |
107 | via offset/sizeof(target_void_pointer). */ | |
108 | size_t size; | |
0a1b45a2 | 109 | bool *used; |
a50b1753 NC |
110 | |
111 | /* Virtual table derivation info. */ | |
112 | struct elf_link_hash_entry *parent; | |
113 | }; | |
114 | ||
422f1182 L |
115 | /* ELF symbol version. */ |
116 | enum elf_symbol_version | |
117 | { | |
118 | unknown = 0, | |
119 | unversioned, | |
120 | versioned, | |
121 | versioned_hidden | |
122 | }; | |
123 | ||
252b5132 RH |
124 | /* ELF linker hash table entries. */ |
125 | ||
126 | struct elf_link_hash_entry | |
127 | { | |
128 | struct bfd_link_hash_entry root; | |
129 | ||
130 | /* Symbol index in output file. This is initialized to -1. It is | |
97196564 L |
131 | set to -2 if the symbol is used by a reloc. It is set to -3 if |
132 | this symbol is defined in a discarded section. */ | |
252b5132 RH |
133 | long indx; |
134 | ||
252b5132 RH |
135 | /* Symbol index as a dynamic symbol. Initialized to -1, and remains |
136 | -1 if this is not a dynamic symbol. */ | |
30b30c21 RH |
137 | /* ??? Note that this is consistently used as a synonym for tests |
138 | against whether we can perform various simplifying transformations | |
139 | to the code. (E.g. changing a pc-relative jump to a PLT entry | |
140 | into a pc-relative jump to the target function.) That test, which | |
141 | is often relatively complex, and someplaces wrong or incomplete, | |
142 | should really be replaced by a predicate in elflink.c. | |
143 | ||
144 | End result: this field -1 does not indicate that the symbol is | |
145 | not in the dynamic symbol table, but rather that the symbol is | |
146 | not visible outside this DSO. */ | |
252b5132 RH |
147 | long dynindx; |
148 | ||
a90b9fca AM |
149 | /* If this symbol requires an entry in the global offset table, the |
150 | processor specific backend uses this field to track usage and | |
5cab59f6 AM |
151 | final offset. Two schemes are supported: The first assumes that |
152 | a symbol may only have one GOT entry, and uses REFCOUNT until | |
153 | size_dynamic_sections, at which point the contents of the .got is | |
154 | fixed. Afterward, if OFFSET is -1, then the symbol does not | |
155 | require a global offset table entry. The second scheme allows | |
156 | multiple GOT entries per symbol, managed via a linked list | |
157 | pointed to by GLIST. */ | |
a50b1753 | 158 | union gotplt_union got; |
a90b9fca AM |
159 | |
160 | /* Same, but tracks a procedure linkage table entry. */ | |
5cab59f6 | 161 | union gotplt_union plt; |
a90b9fca | 162 | |
190eb1dd L |
163 | /* Symbol size. NB: All fields starting from here are cleared by |
164 | _bfd_elf_link_hash_newfunc. */ | |
a90b9fca AM |
165 | bfd_size_type size; |
166 | ||
190eb1dd L |
167 | /* Track dynamic relocs copied for this symbol. */ |
168 | struct elf_dyn_relocs *dyn_relocs; | |
169 | ||
252b5132 | 170 | /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */ |
f5385ebf | 171 | unsigned int type : 8; |
252b5132 | 172 | |
9b234ee9 | 173 | /* Symbol st_other value, symbol visibility. */ |
f5385ebf | 174 | unsigned int other : 8; |
252b5132 | 175 | |
35fc36a8 RS |
176 | /* The symbol's st_target_internal value (see Elf_Internal_Sym). */ |
177 | unsigned int target_internal : 8; | |
178 | ||
7ae26bc1 AM |
179 | /* Symbol is referenced by a non-shared object (other than the object |
180 | in which it is defined). */ | |
f5385ebf | 181 | unsigned int ref_regular : 1; |
252b5132 | 182 | /* Symbol is defined by a non-shared object. */ |
f5385ebf | 183 | unsigned int def_regular : 1; |
252b5132 | 184 | /* Symbol is referenced by a shared object. */ |
f5385ebf | 185 | unsigned int ref_dynamic : 1; |
252b5132 | 186 | /* Symbol is defined by a shared object. */ |
f5385ebf | 187 | unsigned int def_dynamic : 1; |
7ae26bc1 AM |
188 | /* Symbol has a non-weak reference from a non-shared object (other than |
189 | the object in which it is defined). */ | |
f5385ebf | 190 | unsigned int ref_regular_nonweak : 1; |
bbaddd4b AM |
191 | /* Symbol has a non-weak reference from a LTO IR object file. */ |
192 | unsigned int ref_ir_nonweak : 1; | |
252b5132 | 193 | /* Dynamic symbol has been adjustd. */ |
f5385ebf | 194 | unsigned int dynamic_adjusted : 1; |
252b5132 | 195 | /* Symbol needs a copy reloc. */ |
f5385ebf | 196 | unsigned int needs_copy : 1; |
252b5132 | 197 | /* Symbol needs a procedure linkage table entry. */ |
f5385ebf | 198 | unsigned int needs_plt : 1; |
252b5132 | 199 | /* Symbol appears in a non-ELF input file. */ |
f5385ebf | 200 | unsigned int non_elf : 1; |
422f1182 L |
201 | /* Symbol version information. */ |
202 | ENUM_BITFIELD (elf_symbol_version) versioned : 2; | |
252b5132 | 203 | /* Symbol was forced to local scope due to a version script file. */ |
f5385ebf | 204 | unsigned int forced_local : 1; |
55255dae L |
205 | /* Symbol was forced to be dynamic due to a version script file. */ |
206 | unsigned int dynamic : 1; | |
252b5132 | 207 | /* Symbol was marked during garbage collection. */ |
f5385ebf | 208 | unsigned int mark : 1; |
7843f00e ILT |
209 | /* Symbol is referenced by a non-GOT/non-PLT relocation. This is |
210 | not currently set by all the backends. */ | |
f5385ebf | 211 | unsigned int non_got_ref : 1; |
f6e332e6 AM |
212 | /* Symbol has a definition in a shared object. |
213 | FIXME: There is no real need for this field if def_dynamic is never | |
214 | cleared and all places that test def_dynamic also test def_regular. */ | |
f5385ebf | 215 | unsigned int dynamic_def : 1; |
ee659f1f AM |
216 | /* Symbol has a non-weak reference from a shared object. */ |
217 | unsigned int ref_dynamic_nonweak : 1; | |
c6585bbb JJ |
218 | /* Symbol is referenced with a relocation where C/C++ pointer equality |
219 | matters. */ | |
f5385ebf | 220 | unsigned int pointer_equality_needed : 1; |
3e7a7d11 NC |
221 | /* Symbol is a unique global symbol. */ |
222 | unsigned int unique_global : 1; | |
b8417128 AM |
223 | /* Symbol is defined by a shared library with non-default visibility |
224 | in a read/write section. */ | |
6cabe1ea | 225 | unsigned int protected_def : 1; |
cbd0eecf L |
226 | /* Symbol is __start_SECNAME or __stop_SECNAME to mark section |
227 | SECNAME. */ | |
228 | unsigned int start_stop : 1; | |
60d67dc8 AM |
229 | /* Symbol is or was a weak defined symbol from a dynamic object with |
230 | a strong defined symbol alias. U.ALIAS points to a list of aliases, | |
231 | the definition having is_weakalias clear. */ | |
232 | unsigned int is_weakalias : 1; | |
f6e332e6 AM |
233 | |
234 | /* String table index in .dynstr if this is a dynamic symbol. */ | |
235 | unsigned long dynstr_index; | |
236 | ||
237 | union | |
238 | { | |
60d67dc8 AM |
239 | /* Points to a circular list of non-function symbol aliases. */ |
240 | struct elf_link_hash_entry *alias; | |
f6e332e6 AM |
241 | |
242 | /* Hash value of the name computed using the ELF hash function. | |
243 | Used part way through size_dynamic_sections, after we've finished | |
60d67dc8 | 244 | with aliases. */ |
f6e332e6 AM |
245 | unsigned long elf_hash_value; |
246 | } u; | |
247 | ||
248 | /* Version information. */ | |
249 | union | |
250 | { | |
251 | /* This field is used for a symbol which is not defined in a | |
252 | regular object. It points to the version information read in | |
253 | from the dynamic object. */ | |
254 | Elf_Internal_Verdef *verdef; | |
255 | /* This field is used for a symbol which is defined in a regular | |
256 | object. It is set up in size_dynamic_sections. It points to | |
257 | the version information we should write out for this symbol. */ | |
258 | struct bfd_elf_version_tree *vertree; | |
259 | } verinfo; | |
260 | ||
cbd0eecf L |
261 | union |
262 | { | |
263 | /* For __start_SECNAME and __stop_SECNAME symbols, record the first | |
264 | input section whose section name is SECNAME. */ | |
265 | asection *start_stop_section; | |
266 | ||
267 | /* Vtable information. */ | |
268 | struct elf_link_virtual_table_entry *vtable; | |
269 | } u2; | |
252b5132 RH |
270 | }; |
271 | ||
60d67dc8 AM |
272 | /* Return the strong definition for a weak symbol with aliases. */ |
273 | ||
274 | static inline struct elf_link_hash_entry * | |
275 | weakdef (struct elf_link_hash_entry *h) | |
276 | { | |
277 | while (h->is_weakalias) | |
278 | h = h->u.alias; | |
279 | return h; | |
280 | } | |
281 | ||
586119b3 | 282 | /* Will references to this symbol always reference the symbol |
2676a7d9 | 283 | in this object? */ |
986a241f | 284 | #define SYMBOL_REFERENCES_LOCAL(INFO, H) \ |
f6c52c13 | 285 | _bfd_elf_symbol_refs_local_p (H, INFO, 0) |
586119b3 AM |
286 | |
287 | /* Will _calls_ to this symbol always call the version in this object? */ | |
986a241f | 288 | #define SYMBOL_CALLS_LOCAL(INFO, H) \ |
f6c52c13 | 289 | _bfd_elf_symbol_refs_local_p (H, INFO, 1) |
586119b3 | 290 | |
62cd30f1 L |
291 | /* Whether an undefined weak symbol should resolve to its link-time |
292 | value, even in PIC or PIE objects. */ | |
293 | #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \ | |
294 | ((H)->root.type == bfd_link_hash_undefweak \ | |
295 | && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \ | |
296 | || (INFO)->dynamic_undefined_weak == 0)) | |
297 | ||
7e2294f9 | 298 | /* Common symbols that are turned into definitions don't have the |
c4621b33 AM |
299 | DEF_REGULAR flag set, so they might appear to be undefined. |
300 | Symbols defined in linker scripts also don't have DEF_REGULAR set. */ | |
7e2294f9 | 301 | #define ELF_COMMON_DEF_P(H) \ |
f5385ebf AM |
302 | (!(H)->def_regular \ |
303 | && !(H)->def_dynamic \ | |
7e2294f9 AO |
304 | && (H)->root.type == bfd_link_hash_defined) |
305 | ||
30b30c21 RH |
306 | /* Records local symbols to be emitted in the dynamic symbol table. */ |
307 | ||
308 | struct elf_link_local_dynamic_entry | |
309 | { | |
310 | struct elf_link_local_dynamic_entry *next; | |
311 | ||
312 | /* The input bfd this symbol came from. */ | |
313 | bfd *input_bfd; | |
314 | ||
315 | /* The index of the local symbol being copied. */ | |
316 | long input_indx; | |
317 | ||
318 | /* The index in the outgoing dynamic symbol table. */ | |
319 | long dynindx; | |
3e932841 | 320 | |
30b30c21 RH |
321 | /* A copy of the input symbol. */ |
322 | Elf_Internal_Sym isym; | |
323 | }; | |
324 | ||
f5d44ba0 AM |
325 | struct elf_link_loaded_list |
326 | { | |
327 | struct elf_link_loaded_list *next; | |
328 | bfd *abfd; | |
329 | }; | |
330 | ||
126495ed | 331 | /* Structures used by the eh_frame optimization code. */ |
126495ed AM |
332 | struct eh_cie_fde |
333 | { | |
155eaaa0 RS |
334 | union { |
335 | struct { | |
ca92cecb RS |
336 | /* If REMOVED == 1, this is the CIE that the FDE originally used. |
337 | The CIE belongs to the same .eh_frame input section as the FDE. | |
338 | ||
339 | If REMOVED == 0, this is the CIE that we have chosen to use for | |
340 | the output FDE. The CIE's REMOVED field is also 0, but the CIE | |
c2aaac08 AM |
341 | might belong to a different .eh_frame input section from the FDE. |
342 | ||
343 | May be NULL to signify that the FDE should be discarded. */ | |
155eaaa0 | 344 | struct eh_cie_fde *cie_inf; |
9d0a14d3 | 345 | struct eh_cie_fde *next_for_section; |
155eaaa0 | 346 | } fde; |
ca92cecb | 347 | struct { |
184d07da | 348 | /* CIEs have three states: |
fc802241 | 349 | |
184d07da RS |
350 | - REMOVED && !MERGED: Slated for removal because we haven't yet |
351 | proven that an FDE needs it. FULL_CIE, if nonnull, points to | |
352 | more detailed information about the CIE. | |
fc802241 | 353 | |
184d07da RS |
354 | - REMOVED && MERGED: We have merged this CIE with MERGED_WITH, |
355 | which may not belong to the same input section. | |
356 | ||
357 | - !REMOVED: We have decided to keep this CIE. SEC is the | |
358 | .eh_frame input section that contains the CIE. */ | |
fc802241 | 359 | union { |
184d07da | 360 | struct cie *full_cie; |
07d6d2b8 AM |
361 | struct eh_cie_fde *merged_with; |
362 | asection *sec; | |
fc802241 | 363 | } u; |
9d0a14d3 | 364 | |
18e04883 RS |
365 | /* The offset of the personality data from the start of the CIE, |
366 | or 0 if the CIE doesn't have any. */ | |
367 | unsigned int personality_offset : 8; | |
368 | ||
d7153c4a AM |
369 | /* Length of augmentation. aug_str_len is the length of the |
370 | string including null terminator. aug_data_len is the length | |
371 | of the rest up to the initial insns. */ | |
372 | unsigned int aug_str_len : 3; | |
373 | unsigned int aug_data_len : 5; | |
374 | ||
9d0a14d3 RS |
375 | /* True if we have marked relocations associated with this CIE. */ |
376 | unsigned int gc_mark : 1; | |
9f4b847e RS |
377 | |
378 | /* True if we have decided to turn an absolute LSDA encoding into | |
184d07da | 379 | a PC-relative one. */ |
9f4b847e | 380 | unsigned int make_lsda_relative : 1; |
6b2cc140 | 381 | |
18e04883 RS |
382 | /* True if we have decided to turn an absolute personality |
383 | encoding into a PC-relative one. */ | |
384 | unsigned int make_per_encoding_relative : 1; | |
385 | ||
386 | /* True if the CIE contains personality data and if that | |
387 | data uses a PC-relative encoding. Always true when | |
388 | make_per_encoding_relative is. */ | |
6b2cc140 RS |
389 | unsigned int per_encoding_relative : 1; |
390 | ||
2e0ce1c8 AM |
391 | /* True if the CIE contains personality data aligned to a |
392 | multiple of eight bytes. */ | |
393 | unsigned int per_encoding_aligned8 : 1; | |
394 | ||
6b2cc140 RS |
395 | /* True if we need to add an 'R' (FDE encoding) entry to the |
396 | CIE's augmentation data. */ | |
397 | unsigned int add_fde_encoding : 1; | |
184d07da RS |
398 | |
399 | /* True if we have merged this CIE with another. */ | |
400 | unsigned int merged : 1; | |
18e04883 RS |
401 | |
402 | /* Unused bits. */ | |
d7153c4a | 403 | unsigned int pad1 : 9; |
ca92cecb | 404 | } cie; |
155eaaa0 RS |
405 | } u; |
406 | unsigned int reloc_index; | |
126495ed | 407 | unsigned int size; |
fda3ecf2 | 408 | unsigned int offset; |
126495ed | 409 | unsigned int new_offset; |
155eaaa0 RS |
410 | unsigned int fde_encoding : 8; |
411 | unsigned int lsda_encoding : 8; | |
412 | unsigned int lsda_offset : 8; | |
6b2cc140 RS |
413 | |
414 | /* True if this entry represents a CIE, false if it represents an FDE. */ | |
822392ce | 415 | unsigned int cie : 1; |
6b2cc140 RS |
416 | |
417 | /* True if this entry is currently marked for removal. */ | |
822392ce | 418 | unsigned int removed : 1; |
6b2cc140 RS |
419 | |
420 | /* True if we need to add a 'z' (augmentation size) entry to the CIE's | |
421 | augmentation data, and an associated byte to each of the CIE's FDEs. */ | |
353057a5 | 422 | unsigned int add_augmentation_size : 1; |
6b2cc140 RS |
423 | |
424 | /* True if we have decided to convert absolute FDE relocations into | |
425 | relative ones. This applies to the first relocation in the FDE, | |
426 | which is against the code that the FDE describes. */ | |
822392ce | 427 | unsigned int make_relative : 1; |
6b2cc140 RS |
428 | |
429 | /* Unused bits. */ | |
430 | unsigned int pad1 : 4; | |
431 | ||
ac685e6a | 432 | unsigned int *set_loc; |
126495ed AM |
433 | }; |
434 | ||
435 | struct eh_frame_sec_info | |
436 | { | |
437 | unsigned int count; | |
184d07da | 438 | struct cie *cies; |
126495ed AM |
439 | struct eh_cie_fde entry[1]; |
440 | }; | |
441 | ||
442 | struct eh_frame_array_ent | |
443 | { | |
444 | bfd_vma initial_loc; | |
ae6c7e33 | 445 | bfd_size_type range; |
126495ed AM |
446 | bfd_vma fde; |
447 | }; | |
448 | ||
bce613b9 JJ |
449 | struct htab; |
450 | ||
2f0c68f2 CM |
451 | #define DWARF2_EH_HDR 1 |
452 | #define COMPACT_EH_HDR 2 | |
453 | ||
454 | /* Endian-neutral code indicating that a function cannot be unwound. */ | |
455 | #define COMPACT_EH_CANT_UNWIND_OPCODE 0x015d5d01 | |
456 | ||
457 | struct dwarf_eh_frame_hdr_info | |
126495ed | 458 | { |
bce613b9 | 459 | struct htab *cies; |
2f0c68f2 | 460 | unsigned int fde_count; |
126495ed AM |
461 | /* TRUE if .eh_frame_hdr should contain the sorted search table. |
462 | We build it if we successfully read all .eh_frame input sections | |
463 | and recognize them. */ | |
0a1b45a2 | 464 | bool table; |
2f0c68f2 CM |
465 | struct eh_frame_array_ent *array; |
466 | }; | |
467 | ||
468 | struct compact_eh_frame_hdr_info | |
469 | { | |
470 | unsigned int allocated_entries; | |
471 | /* eh_frame_entry fragments. */ | |
472 | asection **entries; | |
473 | }; | |
474 | ||
475 | struct eh_frame_hdr_info | |
476 | { | |
477 | asection *hdr_sec; | |
478 | unsigned int array_count; | |
0a1b45a2 | 479 | bool frame_hdr_is_compact; |
2f0c68f2 CM |
480 | union |
481 | { | |
482 | struct dwarf_eh_frame_hdr_info dwarf; | |
483 | struct compact_eh_frame_hdr_info compact; | |
484 | } | |
485 | u; | |
126495ed AM |
486 | }; |
487 | ||
4dfe6ac6 NC |
488 | /* Enum used to identify target specific extensions to the elf_obj_tdata |
489 | and elf_link_hash_table structures. Note the enums deliberately start | |
490 | from 1 so that we can detect an uninitialized field. The generic value | |
491 | is last so that additions to this enum do not need to modify more than | |
492 | one line. */ | |
493 | enum elf_target_id | |
494 | { | |
a06ea964 NC |
495 | AARCH64_ELF_DATA = 1, |
496 | ALPHA_ELF_DATA, | |
8a36df4d | 497 | ARC_ELF_DATA, |
4dfe6ac6 NC |
498 | ARM_ELF_DATA, |
499 | AVR_ELF_DATA, | |
500 | BFIN_ELF_DATA, | |
501 | CRIS_ELF_DATA, | |
b8891f8d | 502 | CSKY_ELF_DATA, |
4dfe6ac6 NC |
503 | FRV_ELF_DATA, |
504 | HPPA32_ELF_DATA, | |
505 | HPPA64_ELF_DATA, | |
506 | I386_ELF_DATA, | |
507 | IA64_ELF_DATA, | |
508 | LM32_ELF_DATA, | |
509 | M32R_ELF_DATA, | |
510 | M68HC11_ELF_DATA, | |
511 | M68K_ELF_DATA, | |
a3c62988 | 512 | METAG_ELF_DATA, |
4dfe6ac6 NC |
513 | MICROBLAZE_ELF_DATA, |
514 | MIPS_ELF_DATA, | |
515 | MN10300_ELF_DATA, | |
35c08157 | 516 | NDS32_ELF_DATA, |
36591ba1 | 517 | NIOS2_ELF_DATA, |
73589c9d | 518 | OR1K_ELF_DATA, |
4dfe6ac6 NC |
519 | PPC32_ELF_DATA, |
520 | PPC64_ELF_DATA, | |
889294f6 | 521 | PRU_ELF_DATA, |
4dfe6ac6 NC |
522 | S390_ELF_DATA, |
523 | SH_ELF_DATA, | |
524 | SPARC_ELF_DATA, | |
525 | SPU_ELF_DATA, | |
41820509 | 526 | TIC6X_ELF_DATA, |
4dfe6ac6 NC |
527 | X86_64_ELF_DATA, |
528 | XTENSA_ELF_DATA, | |
aa137e4d NC |
529 | TILEGX_ELF_DATA, |
530 | TILEPRO_ELF_DATA, | |
e23eba97 | 531 | RISCV_ELF_DATA, |
4dfe6ac6 NC |
532 | GENERIC_ELF_DATA |
533 | }; | |
534 | ||
ef10c3ac L |
535 | struct elf_sym_strtab |
536 | { | |
537 | Elf_Internal_Sym sym; | |
538 | unsigned long dest_index; | |
539 | unsigned long destshndx_index; | |
540 | }; | |
541 | ||
0b4453c7 AM |
542 | struct bfd_link_needed_list |
543 | { | |
544 | struct bfd_link_needed_list *next; | |
545 | bfd *by; | |
546 | const char *name; | |
547 | }; | |
548 | ||
90c14f0c L |
549 | enum elf_target_os |
550 | { | |
551 | is_normal, | |
90c14f0c L |
552 | is_solaris, /* Solaris. */ |
553 | is_vxworks, /* VxWorks. */ | |
554 | is_nacl /* Native Client. */ | |
555 | }; | |
556 | ||
f1dfbfdb L |
557 | /* Used by bfd_sym_from_r_symndx to cache a small number of local |
558 | symbols. */ | |
559 | #define LOCAL_SYM_CACHE_SIZE 32 | |
560 | struct sym_cache | |
561 | { | |
562 | bfd *abfd; | |
563 | unsigned long indx[LOCAL_SYM_CACHE_SIZE]; | |
564 | Elf_Internal_Sym sym[LOCAL_SYM_CACHE_SIZE]; | |
565 | }; | |
566 | ||
252b5132 RH |
567 | /* ELF linker hash table. */ |
568 | ||
569 | struct elf_link_hash_table | |
570 | { | |
571 | struct bfd_link_hash_table root; | |
51b64d56 | 572 | |
4dfe6ac6 NC |
573 | /* An identifier used to distinguish different target |
574 | specific extensions to this structure. */ | |
575 | enum elf_target_id hash_table_id; | |
576 | ||
252b5132 RH |
577 | /* Whether we have created the special dynamic sections required |
578 | when linking against or generating a shared object. */ | |
0a1b45a2 | 579 | bool dynamic_sections_created; |
51b64d56 | 580 | |
7f923b7f | 581 | /* Whether dynamic relocations are present. */ |
0a1b45a2 | 582 | bool dynamic_relocs; |
7f923b7f | 583 | |
74541ad4 AM |
584 | /* True if this target has relocatable executables, so needs dynamic |
585 | section symbols. */ | |
0a1b45a2 | 586 | bool is_relocatable_executable; |
74541ad4 | 587 | |
cebd6b8a | 588 | /* TRUE if there are IFUNC resolvers. */ |
0a1b45a2 | 589 | bool ifunc_resolvers; |
cebd6b8a | 590 | |
3084d7a2 | 591 | /* TRUE if DT_PLTGOT is a required dynamic tag. */ |
0a1b45a2 | 592 | bool dt_pltgot_required; |
3084d7a2 L |
593 | |
594 | /* TRUE if DT_JMPREL is a required dynamic tag. */ | |
0a1b45a2 | 595 | bool dt_jmprel_required; |
3084d7a2 | 596 | |
252b5132 RH |
597 | /* The BFD used to hold special sections created by the linker. |
598 | This will be the first BFD found which requires these sections to | |
599 | be created. */ | |
600 | bfd *dynobj; | |
51b64d56 AM |
601 | |
602 | /* The value to use when initialising got.refcount/offset and | |
603 | plt.refcount/offset in an elf_link_hash_entry. Set to zero when | |
a6aa5195 AM |
604 | the values are refcounts. Set to init_got_offset/init_plt_offset |
605 | in size_dynamic_sections when the values may be offsets. */ | |
606 | union gotplt_union init_got_refcount; | |
607 | union gotplt_union init_plt_refcount; | |
5cab59f6 AM |
608 | |
609 | /* The value to use for got.refcount/offset and plt.refcount/offset | |
610 | when the values may be offsets. Normally (bfd_vma) -1. */ | |
a6aa5195 AM |
611 | union gotplt_union init_got_offset; |
612 | union gotplt_union init_plt_offset; | |
51b64d56 | 613 | |
d5486c43 L |
614 | /* The number of symbols found in the link which is intended for the |
615 | mandatory DT_SYMTAB tag (.dynsym section) in .dynamic section. */ | |
252b5132 | 616 | bfd_size_type dynsymcount; |
90ac2420 | 617 | bfd_size_type local_dynsymcount; |
51b64d56 | 618 | |
252b5132 RH |
619 | /* The string table of dynamic symbols, which becomes the .dynstr |
620 | section. */ | |
2b0f7ef9 | 621 | struct elf_strtab_hash *dynstr; |
51b64d56 | 622 | |
ef10c3ac L |
623 | /* The number of symbol strings found in the link which must be put |
624 | into the .strtab section. */ | |
625 | bfd_size_type strtabcount; | |
626 | ||
627 | /* The array size of the symbol string table, which becomes the | |
628 | .strtab section. */ | |
629 | bfd_size_type strtabsize; | |
630 | ||
631 | /* The array of strings, which becomes the .strtab section. */ | |
632 | struct elf_sym_strtab *strtab; | |
633 | ||
252b5132 RH |
634 | /* The number of buckets in the hash table in the .hash section. |
635 | This is based on the number of dynamic symbols. */ | |
636 | bfd_size_type bucketcount; | |
51b64d56 | 637 | |
252b5132 RH |
638 | /* A linked list of DT_NEEDED names found in dynamic objects |
639 | included in the link. */ | |
640 | struct bfd_link_needed_list *needed; | |
51b64d56 | 641 | |
74541ad4 AM |
642 | /* Sections in the output bfd that provides a section symbol |
643 | to be used by relocations emitted against local symbols. | |
644 | Most targets will not use data_index_section. */ | |
645 | asection *text_index_section; | |
646 | asection *data_index_section; | |
647 | ||
252b5132 RH |
648 | /* The _GLOBAL_OFFSET_TABLE_ symbol. */ |
649 | struct elf_link_hash_entry *hgot; | |
51b64d56 | 650 | |
7325306f RS |
651 | /* The _PROCEDURE_LINKAGE_TABLE_ symbol. */ |
652 | struct elf_link_hash_entry *hplt; | |
653 | ||
9637f6ef L |
654 | /* The _DYNAMIC symbol. */ |
655 | struct elf_link_hash_entry *hdynamic; | |
656 | ||
f5fa8ca2 | 657 | /* A pointer to information used to merge SEC_MERGE sections. */ |
c39a58e6 | 658 | void *merge_info; |
51b64d56 | 659 | |
3722b82f AM |
660 | /* Used to link stabs in sections. */ |
661 | struct stab_info stab_info; | |
662 | ||
126495ed AM |
663 | /* Used by eh_frame code when editing .eh_frame. */ |
664 | struct eh_frame_hdr_info eh_info; | |
665 | ||
30b30c21 RH |
666 | /* A linked list of local symbols to be added to .dynsym. */ |
667 | struct elf_link_local_dynamic_entry *dynlocal; | |
51b64d56 | 668 | |
a963dc6a L |
669 | /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic |
670 | objects included in the link. */ | |
671 | struct bfd_link_needed_list *runpath; | |
13ae64f3 | 672 | |
e1918d23 AM |
673 | /* Cached first output tls section and size of PT_TLS segment. */ |
674 | asection *tls_sec; | |
66631823 | 675 | bfd_size_type tls_size; /* Bytes. */ |
f5d44ba0 | 676 | |
9bcc30e4 L |
677 | /* The offset into splt of the PLT entry for the TLS descriptor |
678 | resolver. Special values are 0, if not necessary (or not found | |
679 | to be necessary yet), and -1 if needed but not determined | |
680 | yet. */ | |
681 | bfd_vma tlsdesc_plt; | |
682 | ||
683 | /* The GOT offset for the lazy trampoline. Communicated to the | |
684 | loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1 | |
685 | indicates an offset is not allocated. */ | |
686 | bfd_vma tlsdesc_got; | |
687 | ||
90c14f0c L |
688 | /* Target OS for linker output. */ |
689 | enum elf_target_os target_os; | |
690 | ||
e310298c AM |
691 | /* A linked list of dynamic BFD's loaded in the link. */ |
692 | struct elf_link_loaded_list *dyn_loaded; | |
6de2ae4a | 693 | |
f1dfbfdb L |
694 | /* Small local sym cache. */ |
695 | struct sym_cache sym_cache; | |
696 | ||
6de2ae4a L |
697 | /* Short-cuts to get to dynamic linker sections. */ |
698 | asection *sgot; | |
699 | asection *sgotplt; | |
700 | asection *srelgot; | |
701 | asection *splt; | |
702 | asection *srelplt; | |
9d19e4fd AM |
703 | asection *sdynbss; |
704 | asection *srelbss; | |
5474d94f AM |
705 | asection *sdynrelro; |
706 | asection *sreldynrelro; | |
6de2ae4a L |
707 | asection *igotplt; |
708 | asection *iplt; | |
709 | asection *irelplt; | |
710 | asection *irelifunc; | |
cae1fbbb | 711 | asection *dynsym; |
252b5132 RH |
712 | }; |
713 | ||
2cc15b10 AM |
714 | /* Returns TRUE if the hash table is a struct elf_link_hash_table. */ |
715 | ||
716 | static inline bool | |
717 | is_elf_hash_table (const struct bfd_link_hash_table *htab) | |
718 | { | |
719 | return htab->type == bfd_link_elf_hash_table; | |
720 | } | |
721 | ||
252b5132 RH |
722 | /* Look up an entry in an ELF linker hash table. */ |
723 | ||
2cc15b10 AM |
724 | static inline struct elf_link_hash_entry * |
725 | elf_link_hash_lookup (struct elf_link_hash_table *table, const char *string, | |
726 | bool create, bool copy, bool follow) | |
727 | { | |
43e05cd4 AM |
728 | if (ENABLE_CHECKING && !is_elf_hash_table (&table->root)) |
729 | abort (); | |
2cc15b10 AM |
730 | return (struct elf_link_hash_entry *) |
731 | bfd_link_hash_lookup (&table->root, string, create, copy, follow); | |
732 | } | |
252b5132 RH |
733 | |
734 | /* Traverse an ELF linker hash table. */ | |
735 | ||
2cc15b10 AM |
736 | static inline void |
737 | elf_link_hash_traverse (struct elf_link_hash_table *table, | |
738 | bool (*f) (struct elf_link_hash_entry *, void *), | |
739 | void *info) | |
740 | { | |
43e05cd4 AM |
741 | if (ENABLE_CHECKING && !is_elf_hash_table (&table->root)) |
742 | abort (); | |
2cc15b10 AM |
743 | bfd_link_hash_traverse (&table->root, |
744 | (bool (*) (struct bfd_link_hash_entry *, void *)) f, | |
745 | info); | |
746 | } | |
252b5132 RH |
747 | |
748 | /* Get the ELF linker hash table from a link_info structure. */ | |
749 | ||
2cc15b10 AM |
750 | static inline struct elf_link_hash_table * |
751 | elf_hash_table (const struct bfd_link_info *info) | |
752 | { | |
753 | return (struct elf_link_hash_table *) info->hash; | |
754 | } | |
4dfe6ac6 | 755 | |
2cc15b10 AM |
756 | static inline enum elf_target_id |
757 | elf_hash_table_id (const struct elf_link_hash_table *table) | |
758 | { | |
759 | return table->hash_table_id; | |
760 | } | |
252b5132 RH |
761 | \f |
762 | /* Constant information held for an ELF backend. */ | |
763 | ||
764 | struct elf_size_info { | |
765 | unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr; | |
766 | unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note; | |
767 | ||
c7ac6ff8 MM |
768 | /* The size of entries in the .hash section. */ |
769 | unsigned char sizeof_hash_entry; | |
770 | ||
771 | /* The number of internal relocations to allocate per external | |
772 | relocation entry. */ | |
773 | unsigned char int_rels_per_ext_rel; | |
947216bf AM |
774 | /* We use some fixed size arrays. This should be large enough to |
775 | handle all back-ends. */ | |
776 | #define MAX_INT_RELS_PER_EXT_REL 3 | |
c7ac6ff8 | 777 | |
45d6a902 | 778 | unsigned char arch_size, log_file_align; |
252b5132 | 779 | unsigned char elfclass, ev_current; |
dc810e39 | 780 | int (*write_out_phdrs) |
c39a58e6 | 781 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
0a1b45a2 AM |
782 | bool (*write_shdrs_and_ehdr) (bfd *); |
783 | bool (*checksum_contents) | |
20a761b5 | 784 | (bfd * , void (*) (const void *, size_t, void *), void *); |
dc810e39 | 785 | void (*write_relocs) |
c39a58e6 | 786 | (bfd *, asection *, void *); |
0a1b45a2 | 787 | bool (*swap_symbol_in) |
c39a58e6 | 788 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
dc810e39 | 789 | void (*swap_symbol_out) |
c39a58e6 | 790 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
0a1b45a2 AM |
791 | bool (*slurp_reloc_table) |
792 | (bfd *, asection *, asymbol **, bool); | |
dc810e39 | 793 | long (*slurp_symbol_table) |
0a1b45a2 | 794 | (bfd *, asymbol **, bool); |
dc810e39 | 795 | void (*swap_dyn_in) |
c39a58e6 | 796 | (bfd *, const void *, Elf_Internal_Dyn *); |
dc810e39 | 797 | void (*swap_dyn_out) |
c39a58e6 | 798 | (bfd *, const Elf_Internal_Dyn *, void *); |
c7ac6ff8 | 799 | |
947216bf AM |
800 | /* This function is called to swap in a REL relocation. If an |
801 | external relocation corresponds to more than one internal | |
802 | relocation, then all relocations are swapped in at once. */ | |
c7ac6ff8 | 803 | void (*swap_reloc_in) |
c39a58e6 | 804 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
c7ac6ff8 | 805 | |
947216bf | 806 | /* This function is called to swap out a REL relocation. */ |
c7ac6ff8 | 807 | void (*swap_reloc_out) |
c39a58e6 | 808 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
c7ac6ff8 | 809 | |
947216bf AM |
810 | /* This function is called to swap in a RELA relocation. If an |
811 | external relocation corresponds to more than one internal | |
812 | relocation, then all relocations are swapped in at once. */ | |
c7ac6ff8 | 813 | void (*swap_reloca_in) |
c39a58e6 | 814 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
c7ac6ff8 | 815 | |
947216bf | 816 | /* This function is called to swap out a RELA relocation. */ |
c7ac6ff8 | 817 | void (*swap_reloca_out) |
c39a58e6 | 818 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 RH |
819 | }; |
820 | ||
c1229f84 | 821 | #define elf_symbol_from(S) \ |
ec74481d AM |
822 | ((((S)->flags & BSF_SYNTHETIC) == 0 \ |
823 | && (S)->the_bfd != NULL \ | |
0ee5a0e4 AM |
824 | && (S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \ |
825 | && (S)->the_bfd->tdata.elf_obj_data != 0) \ | |
826 | ? (elf_symbol_type *) (S) \ | |
827 | : 0) | |
252b5132 | 828 | |
db6751f2 JJ |
829 | enum elf_reloc_type_class { |
830 | reloc_class_normal, | |
831 | reloc_class_relative, | |
7e612e98 | 832 | reloc_class_copy, |
1997c994 AM |
833 | reloc_class_ifunc, |
834 | reloc_class_plt | |
db6751f2 JJ |
835 | }; |
836 | ||
73d074b4 DJ |
837 | struct elf_reloc_cookie |
838 | { | |
839 | Elf_Internal_Rela *rels, *rel, *relend; | |
6cdc0ccc | 840 | Elf_Internal_Sym *locsyms; |
73d074b4 DJ |
841 | bfd *abfd; |
842 | size_t locsymcount; | |
843 | size_t extsymoff; | |
844 | struct elf_link_hash_entry **sym_hashes; | |
140f6c8e | 845 | int r_sym_shift; |
0a1b45a2 | 846 | bool bad_symtab; |
73d074b4 DJ |
847 | }; |
848 | ||
c6e90b02 TS |
849 | /* The level of IRIX compatibility we're striving for. */ |
850 | ||
851 | typedef enum { | |
852 | ict_none, | |
853 | ict_irix5, | |
854 | ict_irix6 | |
855 | } irix_compat_t; | |
856 | ||
2f89ff8d L |
857 | /* Mapping of ELF section names and types. */ |
858 | struct bfd_elf_special_section | |
859 | { | |
860 | const char *prefix; | |
9fb71ee4 | 861 | unsigned int prefix_length; |
7dcb9820 AM |
862 | /* 0 means name must match PREFIX exactly. |
863 | -1 means name must start with PREFIX followed by an arbitrary string. | |
864 | -2 means name must match PREFIX exactly or consist of PREFIX followed | |
865 | by a dot then anything. | |
866 | > 0 means name must start with the first PREFIX_LENGTH chars of | |
867 | PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */ | |
9fb71ee4 NC |
868 | signed int suffix_length; |
869 | unsigned int type; | |
01e1a5bc | 870 | bfd_vma attr; |
2f89ff8d L |
871 | }; |
872 | ||
8a696751 AM |
873 | enum action_discarded |
874 | { | |
875 | COMPLAIN = 1, | |
876 | PRETEND = 2 | |
877 | }; | |
878 | ||
6a5bb875 PB |
879 | typedef asection * (*elf_gc_mark_hook_fn) |
880 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | |
881 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
882 | ||
46bed679 L |
883 | enum elf_property_kind |
884 | { | |
885 | /* A new property. */ | |
886 | property_unknown = 0, | |
887 | /* A property ignored by backend. */ | |
888 | property_ignored, | |
889 | /* A corrupt property reported by backend. */ | |
890 | property_corrupt, | |
891 | /* A property should be removed due to property merge. */ | |
892 | property_remove, | |
893 | /* A property which is a number. */ | |
894 | property_number | |
895 | }; | |
896 | ||
897 | typedef struct elf_property | |
898 | { | |
899 | unsigned int pr_type; | |
900 | unsigned int pr_datasz; | |
901 | union | |
902 | { | |
903 | /* For property_number, this is a number. */ | |
904 | bfd_vma number; | |
905 | /* Add a new one if elf_property_kind is updated. */ | |
906 | } u; | |
907 | enum elf_property_kind pr_kind; | |
908 | } elf_property; | |
909 | ||
910 | typedef struct elf_property_list | |
911 | { | |
912 | struct elf_property_list *next; | |
913 | struct elf_property property; | |
914 | } elf_property_list; | |
915 | ||
9eaff861 AO |
916 | struct bfd_elf_section_reloc_data; |
917 | ||
252b5132 RH |
918 | struct elf_backend_data |
919 | { | |
252b5132 RH |
920 | /* The architecture for this backend. */ |
921 | enum bfd_architecture arch; | |
922 | ||
ae95ffa6 L |
923 | /* An identifier used to distinguish different target specific |
924 | extensions to elf_obj_tdata and elf_link_hash_table structures. */ | |
925 | enum elf_target_id target_id; | |
926 | ||
90c14f0c L |
927 | /* Target OS. */ |
928 | enum elf_target_os target_os; | |
929 | ||
252b5132 RH |
930 | /* The ELF machine code (EM_xxxx) for this backend. */ |
931 | int elf_machine_code; | |
932 | ||
9eaff861 | 933 | /* EI_OSABI. */ |
d1036acb L |
934 | int elf_osabi; |
935 | ||
252b5132 RH |
936 | /* The maximum page size for this backend. */ |
937 | bfd_vma maxpagesize; | |
938 | ||
b1342370 DJ |
939 | /* The minimum page size for this backend. An input object will not be |
940 | considered page aligned unless its sections are correctly aligned for | |
941 | pages at least this large. May be smaller than maxpagesize. */ | |
942 | bfd_vma minpagesize; | |
943 | ||
24718e3b L |
944 | /* The common page size for this backend. */ |
945 | bfd_vma commonpagesize; | |
946 | ||
702d1671 AM |
947 | /* The value of commonpagesize to use when -z relro for this backend. */ |
948 | bfd_vma relropagesize; | |
949 | ||
e5a52504 MM |
950 | /* The BFD flags applied to sections created for dynamic linking. */ |
951 | flagword dynamic_sec_flags; | |
952 | ||
23209a78 RM |
953 | /* Architecture-specific data for this backend. |
954 | This is actually a pointer to some type like struct elf_ARCH_data. */ | |
955 | const void *arch_data; | |
956 | ||
252b5132 | 957 | /* A function to translate an ELF RELA relocation to a BFD arelent |
f3185997 | 958 | structure. Returns TRUE upon success, FALSE otherwise. */ |
0a1b45a2 | 959 | bool (*elf_info_to_howto) |
c39a58e6 | 960 | (bfd *, arelent *, Elf_Internal_Rela *); |
252b5132 RH |
961 | |
962 | /* A function to translate an ELF REL relocation to a BFD arelent | |
f3185997 | 963 | structure. Returns TRUE upon success, FALSE otherwise. */ |
0a1b45a2 | 964 | bool (*elf_info_to_howto_rel) |
c39a58e6 | 965 | (bfd *, arelent *, Elf_Internal_Rela *); |
252b5132 RH |
966 | |
967 | /* A function to determine whether a symbol is global when | |
968 | partitioning the symbol table into local and global symbols. | |
969 | This should be NULL for most targets, in which case the correct | |
970 | thing will be done. MIPS ELF, at least on the Irix 5, has | |
971 | special requirements. */ | |
0a1b45a2 | 972 | bool (*elf_backend_sym_is_global) |
c39a58e6 | 973 | (bfd *, asymbol *); |
252b5132 RH |
974 | |
975 | /* The remaining functions are hooks which are called only if they | |
976 | are not NULL. */ | |
977 | ||
978 | /* A function to permit a backend specific check on whether a | |
979 | particular BFD format is relevant for an object file, and to | |
980 | permit the backend to set any global information it wishes. When | |
981 | this is called elf_elfheader is set, but anything else should be | |
b34976b6 | 982 | used with caution. If this returns FALSE, the check_format |
252b5132 | 983 | routine will return a bfd_error_wrong_format error. */ |
0a1b45a2 | 984 | bool (*elf_backend_object_p) |
c39a58e6 | 985 | (bfd *); |
252b5132 RH |
986 | |
987 | /* A function to do additional symbol processing when reading the | |
988 | ELF symbol table. This is where any processor-specific special | |
989 | section indices are handled. */ | |
dc810e39 | 990 | void (*elf_backend_symbol_processing) |
c39a58e6 | 991 | (bfd *, asymbol *); |
252b5132 RH |
992 | |
993 | /* A function to do additional symbol processing after reading the | |
994 | entire ELF symbol table. */ | |
0a1b45a2 | 995 | bool (*elf_backend_symbol_table_processing) |
c39a58e6 | 996 | (bfd *, elf_symbol_type *, unsigned int); |
252b5132 | 997 | |
8387904d | 998 | /* A function to set the type of the info field. Processor-specific |
3e932841 | 999 | types should be handled here. */ |
dc810e39 | 1000 | int (*elf_backend_get_symbol_type) |
c39a58e6 | 1001 | (Elf_Internal_Sym *, int); |
60bcf0fa | 1002 | |
8387904d AM |
1003 | /* A function to return the linker hash table entry of a symbol that |
1004 | might be satisfied by an archive symbol. */ | |
b585e899 | 1005 | struct bfd_link_hash_entry * (*elf_backend_archive_symbol_lookup) |
8387904d AM |
1006 | (bfd *, struct bfd_link_info *, const char *); |
1007 | ||
174fd7f9 RS |
1008 | /* Return true if local section symbols should have a non-null st_name. |
1009 | NULL implies false. */ | |
0a1b45a2 | 1010 | bool (*elf_backend_name_local_section_symbols) |
174fd7f9 RS |
1011 | (bfd *); |
1012 | ||
252b5132 RH |
1013 | /* A function to do additional processing on the ELF section header |
1014 | just before writing it out. This is used to set the flags and | |
1015 | type fields for some sections, or to actually write out data for | |
1016 | unusual sections. */ | |
0a1b45a2 | 1017 | bool (*elf_backend_section_processing) |
c39a58e6 | 1018 | (bfd *, Elf_Internal_Shdr *); |
252b5132 RH |
1019 | |
1020 | /* A function to handle unusual section types when creating BFD | |
1021 | sections from ELF sections. */ | |
0a1b45a2 | 1022 | bool (*elf_backend_section_from_shdr) |
6dc132d9 | 1023 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
252b5132 | 1024 | |
551b43fd | 1025 | /* A function to convert machine dependent ELF section header flags to |
fa152c49 | 1026 | BFD internal section header flags. */ |
0a1b45a2 | 1027 | bool (*elf_backend_section_flags) |
8c803a2d | 1028 | (const Elf_Internal_Shdr *); |
fa152c49 | 1029 | |
551b43fd AM |
1030 | /* A function that returns a struct containing ELF section flags and |
1031 | type for the given BFD section. */ | |
1032 | const struct bfd_elf_special_section * (*get_sec_type_attr) | |
1033 | (bfd *, asection *); | |
1034 | ||
20cfcaae | 1035 | /* A function to handle unusual program segment types when creating BFD |
3e932841 | 1036 | sections from ELF program segments. */ |
0a1b45a2 | 1037 | bool (*elf_backend_section_from_phdr) |
d27f5fa1 | 1038 | (bfd *, Elf_Internal_Phdr *, int, const char *); |
20cfcaae | 1039 | |
252b5132 RH |
1040 | /* A function to set up the ELF section header for a BFD section in |
1041 | preparation for writing it out. This is where the flags and type | |
1042 | fields are set for unusual sections. */ | |
0a1b45a2 | 1043 | bool (*elf_backend_fake_sections) |
c39a58e6 | 1044 | (bfd *, Elf_Internal_Shdr *, asection *); |
252b5132 RH |
1045 | |
1046 | /* A function to get the ELF section index for a BFD section. If | |
b34976b6 | 1047 | this returns TRUE, the section was found. If it is a normal ELF |
252b5132 RH |
1048 | section, *RETVAL should be left unchanged. If it is not a normal |
1049 | ELF section *RETVAL should be set to the SHN_xxxx index. */ | |
0a1b45a2 | 1050 | bool (*elf_backend_section_from_bfd_section) |
c39a58e6 | 1051 | (bfd *, asection *, int *retval); |
252b5132 RH |
1052 | |
1053 | /* If this field is not NULL, it is called by the add_symbols phase | |
1054 | of a link just before adding a symbol to the global linker hash | |
1055 | table. It may modify any of the fields as it wishes. If *NAME | |
1056 | is set to NULL, the symbol will be skipped rather than being | |
1057 | added to the hash table. This function is responsible for | |
1058 | handling all processor dependent symbol bindings and section | |
1059 | indices, and must set at least *FLAGS and *SEC for each processor | |
1060 | dependent case; failure to do so will cause a link error. */ | |
0a1b45a2 | 1061 | bool (*elf_add_symbol_hook) |
555cd476 | 1062 | (bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *, |
c39a58e6 | 1063 | const char **name, flagword *flags, asection **sec, bfd_vma *value); |
252b5132 RH |
1064 | |
1065 | /* If this field is not NULL, it is called by the elf_link_output_sym | |
6e0b88f1 AM |
1066 | phase of a link for each symbol which will appear in the object file. |
1067 | On error, this function returns 0. 1 is returned when the symbol | |
1068 | should be output, 2 is returned when the symbol should be discarded. */ | |
1069 | int (*elf_backend_link_output_symbol_hook) | |
754021d0 AM |
1070 | (struct bfd_link_info *info, const char *, Elf_Internal_Sym *, |
1071 | asection *, struct elf_link_hash_entry *); | |
252b5132 RH |
1072 | |
1073 | /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend | |
1074 | linker the first time it encounters a dynamic object in the link. | |
1075 | This function must create any sections required for dynamic | |
1076 | linking. The ABFD argument is a dynamic object. The .interp, | |
1077 | .dynamic, .dynsym, .dynstr, and .hash functions have already been | |
1078 | created, and this function may modify the section flags if | |
1079 | desired. This function will normally create the .got and .plt | |
1080 | sections, but different backends have different requirements. */ | |
0a1b45a2 | 1081 | bool (*elf_backend_create_dynamic_sections) |
c39a58e6 | 1082 | (bfd *abfd, struct bfd_link_info *info); |
252b5132 | 1083 | |
aee6f5b4 AO |
1084 | /* When creating a shared library, determine whether to omit the |
1085 | dynamic symbol for the section. */ | |
0a1b45a2 | 1086 | bool (*elf_backend_omit_section_dynsym) |
aee6f5b4 AO |
1087 | (bfd *output_bfd, struct bfd_link_info *info, asection *osec); |
1088 | ||
13285a1b AM |
1089 | /* Return TRUE if relocations of targets are compatible to the extent |
1090 | that CHECK_RELOCS will properly process them. PR 4424. */ | |
0a1b45a2 | 1091 | bool (*relocs_compatible) (const bfd_target *, const bfd_target *); |
13285a1b | 1092 | |
252b5132 RH |
1093 | /* The CHECK_RELOCS function is called by the add_symbols phase of |
1094 | the ELF backend linker. It is called once for each section with | |
1095 | relocs of an object file, just after the symbols for the object | |
1096 | file have been added to the global linker hash table. The | |
1097 | function must look through the relocs and do any special handling | |
1098 | required. This generally means allocating space in the global | |
1099 | offset table, and perhaps allocating space for a reloc. The | |
1100 | relocs are always passed as Rela structures; if the section | |
1101 | actually uses Rel structures, the r_addend field will always be | |
1102 | zero. */ | |
0a1b45a2 | 1103 | bool (*check_relocs) |
c39a58e6 AM |
1104 | (bfd *abfd, struct bfd_link_info *info, asection *o, |
1105 | const Elf_Internal_Rela *relocs); | |
252b5132 | 1106 | |
85fbca6a NC |
1107 | /* The CHECK_DIRECTIVES function is called once per input file by |
1108 | the add_symbols phase of the ELF backend linker. The function | |
1109 | must inspect the bfd and create any additional symbols according | |
1110 | to any custom directives in the bfd. */ | |
0a1b45a2 | 1111 | bool (*check_directives) |
85fbca6a NC |
1112 | (bfd *abfd, struct bfd_link_info *info); |
1113 | ||
e5034e59 AM |
1114 | /* The NOTICE_AS_NEEDED function is called as the linker is about to |
1115 | handle an as-needed lib (ACT = notice_as_needed), and after the | |
1116 | linker has decided to keep the lib (ACT = notice_needed) or when | |
1117 | the lib is not needed (ACT = notice_not_needed). */ | |
0a1b45a2 | 1118 | bool (*notice_as_needed) |
e5034e59 | 1119 | (bfd *abfd, struct bfd_link_info *info, enum notice_asneeded_action act); |
97fed1c9 | 1120 | |
252b5132 RH |
1121 | /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend |
1122 | linker for every symbol which is defined by a dynamic object and | |
1123 | referenced by a regular object. This is called after all the | |
1124 | input files have been seen, but before the SIZE_DYNAMIC_SECTIONS | |
1125 | function has been called. The hash table entry should be | |
1126 | bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be | |
1127 | defined in a section from a dynamic object. Dynamic object | |
1128 | sections are not included in the final link, and this function is | |
1129 | responsible for changing the value to something which the rest of | |
1130 | the link can deal with. This will normally involve adding an | |
1131 | entry to the .plt or .got or some such section, and setting the | |
1132 | symbol to point to that. */ | |
0a1b45a2 | 1133 | bool (*elf_backend_adjust_dynamic_symbol) |
c39a58e6 | 1134 | (struct bfd_link_info *info, struct elf_link_hash_entry *h); |
252b5132 RH |
1135 | |
1136 | /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker | |
1137 | after all the linker input files have been seen but before the | |
1138 | section sizes have been set. This is called after | |
1139 | ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */ | |
0a1b45a2 | 1140 | bool (*elf_backend_always_size_sections) |
c39a58e6 | 1141 | (bfd *output_bfd, struct bfd_link_info *info); |
252b5132 RH |
1142 | |
1143 | /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend | |
1144 | linker after all the linker input files have been seen but before | |
1145 | the sections sizes have been set. This is called after | |
1146 | ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols. | |
1147 | It is only called when linking against a dynamic object. It must | |
1148 | set the sizes of the dynamic sections, and may fill in their | |
1149 | contents as well. The generic ELF linker can handle the .dynsym, | |
1150 | .dynstr and .hash sections. This function must handle the | |
1151 | .interp section and any sections created by the | |
1152 | CREATE_DYNAMIC_SECTIONS entry point. */ | |
0a1b45a2 | 1153 | bool (*elf_backend_size_dynamic_sections) |
c39a58e6 | 1154 | (bfd *output_bfd, struct bfd_link_info *info); |
252b5132 | 1155 | |
6f6fd151 L |
1156 | /* The STRIP_ZERO_SIZED_DYNAMIC_SECTIONS function is called by the |
1157 | ELF backend linker to strip zero-sized dynamic sections after | |
1158 | the section sizes have been set. */ | |
0a1b45a2 | 1159 | bool (*elf_backend_strip_zero_sized_dynamic_sections) |
6f6fd151 L |
1160 | (struct bfd_link_info *info); |
1161 | ||
74541ad4 AM |
1162 | /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections |
1163 | we keep to use as a base for relocs and symbols. */ | |
1164 | void (*elf_backend_init_index_section) | |
1165 | (bfd *output_bfd, struct bfd_link_info *info); | |
1166 | ||
252b5132 RH |
1167 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
1168 | to handle the relocations for a section. | |
1169 | ||
1170 | The relocs are always passed as Rela structures; if the section | |
1171 | actually uses Rel structures, the r_addend field will always be | |
1172 | zero. | |
1173 | ||
1174 | This function is responsible for adjust the section contents as | |
1175 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 1176 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
1177 | necessary. |
1178 | ||
1179 | This function does not have to worry about setting the reloc | |
1180 | address or the reloc symbol index. | |
1181 | ||
1182 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
1183 | ||
1184 | LOCAL_SECTIONS is an array giving the section in the input file | |
1185 | corresponding to the st_shndx field of each local symbol. | |
1186 | ||
1187 | The global hash table entry for the global symbols can be found | |
1188 | via elf_sym_hashes (input_bfd). | |
1189 | ||
1049f94e | 1190 | When generating relocatable output, this function must handle |
252b5132 RH |
1191 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
1192 | going to be the section symbol corresponding to the output | |
1193 | section, which means that the addend must be adjusted | |
ece5ef60 AM |
1194 | accordingly. |
1195 | ||
1196 | Returns FALSE on error, TRUE on success, 2 if successful and | |
1197 | relocations should be written for this section. */ | |
1198 | int (*elf_backend_relocate_section) | |
c39a58e6 AM |
1199 | (bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd, |
1200 | asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs, | |
1201 | Elf_Internal_Sym *local_syms, asection **local_sections); | |
252b5132 RH |
1202 | |
1203 | /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend | |
1204 | linker just before it writes a symbol out to the .dynsym section. | |
1205 | The processor backend may make any required adjustment to the | |
1206 | symbol. It may also take the opportunity to set contents of the | |
1207 | dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on | |
1208 | all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called | |
1209 | on those symbols which are defined by a dynamic object. */ | |
0a1b45a2 | 1210 | bool (*elf_backend_finish_dynamic_symbol) |
c39a58e6 AM |
1211 | (bfd *output_bfd, struct bfd_link_info *info, |
1212 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym); | |
252b5132 RH |
1213 | |
1214 | /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend | |
1215 | linker just before it writes all the dynamic sections out to the | |
1216 | output file. The FINISH_DYNAMIC_SYMBOL will have been called on | |
1217 | all dynamic symbols. */ | |
0a1b45a2 | 1218 | bool (*elf_backend_finish_dynamic_sections) |
c39a58e6 | 1219 | (bfd *output_bfd, struct bfd_link_info *info); |
252b5132 RH |
1220 | |
1221 | /* A function to do any beginning processing needed for the ELF file | |
1222 | before building the ELF headers and computing file positions. */ | |
1223 | void (*elf_backend_begin_write_processing) | |
c39a58e6 | 1224 | (bfd *, struct bfd_link_info *); |
252b5132 RH |
1225 | |
1226 | /* A function to do any final processing needed for the ELF file | |
cc364be6 | 1227 | before writing it out. */ |
0a1b45a2 | 1228 | bool (*elf_backend_final_write_processing) |
cc364be6 | 1229 | (bfd *); |
252b5132 RH |
1230 | |
1231 | /* This function is called by get_program_header_size. It should | |
1232 | return the number of additional program segments which this BFD | |
1233 | will need. It should return -1 on error. */ | |
dc810e39 | 1234 | int (*elf_backend_additional_program_headers) |
a6b96beb | 1235 | (bfd *, struct bfd_link_info *); |
252b5132 RH |
1236 | |
1237 | /* This function is called to modify an existing segment map in a | |
1238 | backend specific fashion. */ | |
0a1b45a2 | 1239 | bool (*elf_backend_modify_segment_map) |
c84fca4d | 1240 | (bfd *, struct bfd_link_info *); |
252b5132 | 1241 | |
e36284ab AM |
1242 | /* This function is called to modify program headers just before |
1243 | they are written. */ | |
0a1b45a2 | 1244 | bool (*elf_backend_modify_headers) |
e36284ab AM |
1245 | (bfd *, struct bfd_link_info *); |
1246 | ||
1a9ccd70 NC |
1247 | /* This function is called to see if the PHDR header should be |
1248 | checked for validity. */ | |
0a1b45a2 | 1249 | bool (*elf_backend_allow_non_load_phdr) |
1a9ccd70 NC |
1250 | (bfd *, const Elf_Internal_Phdr *, unsigned); |
1251 | ||
74f0fb50 AM |
1252 | /* This function is called before section garbage collection to |
1253 | mark entry symbol sections. */ | |
1254 | void (*gc_keep) | |
1255 | (struct bfd_link_info *); | |
1256 | ||
64d03ab5 AM |
1257 | /* This function is called during section garbage collection to |
1258 | mark sections that define global symbols. */ | |
0a1b45a2 | 1259 | bool (*gc_mark_dynamic_ref) |
74f0fb50 | 1260 | (struct elf_link_hash_entry *, void *); |
64d03ab5 | 1261 | |
252b5132 | 1262 | /* This function is called during section gc to discover the section a |
1e2f5b6e | 1263 | particular relocation refers to. */ |
6a5bb875 PB |
1264 | elf_gc_mark_hook_fn gc_mark_hook; |
1265 | ||
1266 | /* This function, if defined, is called after the first gc marking pass | |
1267 | to allow the backend to mark additional sections. */ | |
0a1b45a2 | 1268 | bool (*gc_mark_extra_sections) |
74f0fb50 | 1269 | (struct bfd_link_info *, elf_gc_mark_hook_fn); |
252b5132 | 1270 | |
ed7e9d0b AM |
1271 | /* This function is called to initialise ELF file header info. |
1272 | Customised versions can modify things like the OS and ABI version. */ | |
0a1b45a2 | 1273 | bool (*elf_backend_init_file_header) |
c39a58e6 | 1274 | (bfd *, struct bfd_link_info *); |
e6c51ed4 | 1275 | |
587ff49e RH |
1276 | /* This function, if defined, prints a symbol to file and returns the |
1277 | name of the symbol to be printed. It should return NULL to fall | |
1278 | back to default symbol printing. */ | |
1279 | const char *(*elf_backend_print_symbol_all) | |
c39a58e6 | 1280 | (bfd *, void *, asymbol *); |
587ff49e RH |
1281 | |
1282 | /* This function, if defined, is called after all local symbols and | |
4cc11e76 | 1283 | global symbols converted to locals are emitted into the symtab |
4e617b1e | 1284 | section. It allows the backend to emit special local symbols |
587ff49e | 1285 | not handled in the hash table. */ |
0a1b45a2 | 1286 | bool (*elf_backend_output_arch_local_syms) |
4e617b1e | 1287 | (bfd *, struct bfd_link_info *, void *, |
37bb890f AM |
1288 | int (*) (void *, const char *, Elf_Internal_Sym *, asection *, |
1289 | struct elf_link_hash_entry *)); | |
4e617b1e PB |
1290 | |
1291 | /* This function, if defined, is called after all symbols are emitted | |
1292 | into the symtab section. It allows the backend to emit special | |
1293 | global symbols not handled in the hash table. */ | |
0a1b45a2 | 1294 | bool (*elf_backend_output_arch_syms) |
c39a58e6 | 1295 | (bfd *, struct bfd_link_info *, void *, |
37bb890f AM |
1296 | int (*) (void *, const char *, Elf_Internal_Sym *, asection *, |
1297 | struct elf_link_hash_entry *)); | |
587ff49e | 1298 | |
76359541 TP |
1299 | /* Filter what symbols of the output file to include in the import |
1300 | library if one is created. */ | |
1301 | unsigned int (*elf_backend_filter_implib_symbols) | |
1302 | (bfd *, struct bfd_link_info *, asymbol **, long); | |
1303 | ||
d4c88bbb | 1304 | /* Copy any information related to dynamic linking from a pre-existing |
0a991dfe AM |
1305 | symbol to a newly created symbol. Also called to copy flags and |
1306 | other back-end info to a weakdef, in which case the symbol is not | |
1307 | newly created and plt/got refcounts and dynamic indices should not | |
1308 | be copied. */ | |
c61b8717 | 1309 | void (*elf_backend_copy_indirect_symbol) |
fcfa13d2 | 1310 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
c39a58e6 | 1311 | struct elf_link_hash_entry *); |
c61b8717 RH |
1312 | |
1313 | /* Modify any information related to dynamic linking such that the | |
1314 | symbol is not exported. */ | |
1315 | void (*elf_backend_hide_symbol) | |
0a1b45a2 | 1316 | (struct bfd_link_info *, struct elf_link_hash_entry *, bool); |
c61b8717 | 1317 | |
508c3946 L |
1318 | /* A function to do additional symbol fixup, called by |
1319 | _bfd_elf_fix_symbol_flags. */ | |
0a1b45a2 | 1320 | bool (*elf_backend_fixup_symbol) |
508c3946 L |
1321 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
1322 | ||
9bf7216d KK |
1323 | /* Merge the backend specific symbol attribute. */ |
1324 | void (*elf_backend_merge_symbol_attribute) | |
0a1b45a2 | 1325 | (struct elf_link_hash_entry *, unsigned int, bool, bool); |
9bf7216d | 1326 | |
ad9563d6 CM |
1327 | /* This function, if defined, will return a string containing the |
1328 | name of a target-specific dynamic tag. */ | |
1329 | char *(*elf_backend_get_target_dtag) | |
1330 | (bfd_vma); | |
1331 | ||
12ac1cf5 NC |
1332 | /* Decide whether an undefined symbol is special and can be ignored. |
1333 | This is the case for OPTIONAL symbols on IRIX. */ | |
0a1b45a2 | 1334 | bool (*elf_backend_ignore_undef_symbol) |
12ac1cf5 NC |
1335 | (struct elf_link_hash_entry *); |
1336 | ||
9317eacc CM |
1337 | /* Emit relocations. Overrides default routine for emitting relocs, |
1338 | except during a relocatable link, or if all relocs are being emitted. */ | |
0a1b45a2 | 1339 | bool (*elf_backend_emit_relocs) |
eac338cf PB |
1340 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, |
1341 | struct elf_link_hash_entry **); | |
9317eacc | 1342 | |
9eaff861 AO |
1343 | /* Update relocations. It is allowed to change the number and the order. |
1344 | In such a case hashes should be invalidated. */ | |
1345 | void (*elf_backend_update_relocs) | |
1346 | (asection *, struct bfd_elf_section_reloc_data *); | |
1347 | ||
9317eacc CM |
1348 | /* Count relocations. Not called for relocatable links |
1349 | or if all relocs are being preserved in the output. */ | |
1350 | unsigned int (*elf_backend_count_relocs) | |
58217f29 | 1351 | (struct bfd_link_info *, asection *); |
9317eacc | 1352 | |
491d01d3 YU |
1353 | /* Count additionals relocations. Called for relocatable links if |
1354 | additional relocations needs to be created. */ | |
1355 | unsigned int (*elf_backend_count_additional_relocs) | |
1356 | (asection *); | |
1357 | ||
28dbcedc AM |
1358 | /* Say whether to sort relocs output by ld -r and ld --emit-relocs, |
1359 | by r_offset. If NULL, default to true. */ | |
0a1b45a2 | 1360 | bool (*sort_relocs_p) |
28dbcedc AM |
1361 | (asection *); |
1362 | ||
bb0082d6 | 1363 | /* This function, if defined, is called when an NT_PRSTATUS note is found |
183e98be | 1364 | in a core file. */ |
0a1b45a2 | 1365 | bool (*elf_backend_grok_prstatus) |
c39a58e6 | 1366 | (bfd *, Elf_Internal_Note *); |
bb0082d6 AM |
1367 | |
1368 | /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO | |
183e98be | 1369 | note is found in a core file. */ |
0a1b45a2 | 1370 | bool (*elf_backend_grok_psinfo) |
c39a58e6 | 1371 | (bfd *, Elf_Internal_Note *); |
bb0082d6 | 1372 | |
544c67cd JB |
1373 | /* This function, if defined, is called when a "FreeBSD" NT_PRSTATUS |
1374 | note is found in a core file. */ | |
0a1b45a2 | 1375 | bool (*elf_backend_grok_freebsd_prstatus) |
544c67cd JB |
1376 | (bfd *, Elf_Internal_Note *); |
1377 | ||
183e98be AM |
1378 | /* This function, if defined, is called to write a note to a corefile. */ |
1379 | char *(*elf_backend_write_core_note) | |
1380 | (bfd *abfd, char *buf, int *bufsiz, int note_type, ...); | |
1381 | ||
ae17ab41 CM |
1382 | /* This function, if defined, is called to convert target-specific |
1383 | section flag names into hex values. */ | |
1384 | flagword (*elf_backend_lookup_section_flags_hook) | |
1385 | (char *); | |
1386 | ||
db6751f2 | 1387 | /* This function returns class of a reloc type. */ |
f51e552e | 1388 | enum elf_reloc_type_class (*elf_backend_reloc_type_class) |
7e612e98 | 1389 | (const struct bfd_link_info *, const asection *, const Elf_Internal_Rela *); |
db6751f2 | 1390 | |
73d074b4 DJ |
1391 | /* This function, if defined, removes information about discarded functions |
1392 | from other sections which mention them. */ | |
0a1b45a2 | 1393 | bool (*elf_backend_discard_info) |
c39a58e6 | 1394 | (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *); |
73d074b4 DJ |
1395 | |
1396 | /* This function, if defined, signals that the function above has removed | |
1397 | the discarded relocations for this section. */ | |
0a1b45a2 | 1398 | bool (*elf_backend_ignore_discarded_relocs) |
c39a58e6 | 1399 | (asection *); |
73d074b4 | 1400 | |
8a696751 AM |
1401 | /* What to do when ld finds relocations against symbols defined in |
1402 | discarded sections. */ | |
1403 | unsigned int (*action_discarded) | |
1404 | (asection *); | |
1405 | ||
8c946ed5 RS |
1406 | /* This function returns the width of FDE pointers in bytes, or 0 if |
1407 | that can't be determined for some reason. The default definition | |
1408 | goes by the bfd's EI_CLASS. */ | |
1409 | unsigned int (*elf_backend_eh_frame_address_size) | |
76c20d54 | 1410 | (bfd *, const asection *); |
8c946ed5 | 1411 | |
ec3391e7 AO |
1412 | /* These functions tell elf-eh-frame whether to attempt to turn |
1413 | absolute or lsda encodings into pc-relative ones. The default | |
1414 | definition enables these transformations. */ | |
0a1b45a2 | 1415 | bool (*elf_backend_can_make_relative_eh_frame) |
ec3391e7 | 1416 | (bfd *, struct bfd_link_info *, asection *); |
0a1b45a2 | 1417 | bool (*elf_backend_can_make_lsda_relative_eh_frame) |
ec3391e7 AO |
1418 | (bfd *, struct bfd_link_info *, asection *); |
1419 | ||
1420 | /* This function returns an encoding after computing the encoded | |
1421 | value (and storing it in ENCODED) for the given OFFSET into OSEC, | |
1422 | to be stored in at LOC_OFFSET into the LOC_SEC input section. | |
1423 | The default definition chooses a 32-bit PC-relative encoding. */ | |
1424 | bfd_byte (*elf_backend_encode_eh_address) | |
1425 | (bfd *abfd, struct bfd_link_info *info, | |
1426 | asection *osec, bfd_vma offset, | |
1427 | asection *loc_sec, bfd_vma loc_offset, | |
1428 | bfd_vma *encoded); | |
1429 | ||
73d074b4 | 1430 | /* This function, if defined, may write out the given section. |
b34976b6 | 1431 | Returns TRUE if it did so and FALSE if the caller should. */ |
0a1b45a2 | 1432 | bool (*elf_backend_write_section) |
c7b8f16e | 1433 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
73d074b4 | 1434 | |
3f1b17bb MR |
1435 | /* This function, if defined, returns TRUE if it is section symbols |
1436 | only that are considered local for the purpose of partitioning the | |
1437 | symbol table into local and global symbols. This should be NULL | |
1438 | for most targets, in which case the correct thing will be done. | |
1439 | MIPS ELF, at least on the Irix 5, has special requirements. */ | |
0a1b45a2 | 1440 | bool (*elf_backend_elfsym_local_is_section) |
3f1b17bb MR |
1441 | (bfd *); |
1442 | ||
c6e90b02 TS |
1443 | /* The level of IRIX compatibility we're striving for. |
1444 | MIPS ELF specific function. */ | |
1445 | irix_compat_t (*elf_backend_mips_irix_compat) | |
c39a58e6 | 1446 | (bfd *); |
c6e90b02 TS |
1447 | |
1448 | reloc_howto_type *(*elf_backend_mips_rtype_to_howto) | |
0a1b45a2 | 1449 | (bfd *, unsigned int, bool); |
c6e90b02 | 1450 | |
252b5132 RH |
1451 | /* The swapping table to use when dealing with ECOFF information. |
1452 | Used for the MIPS ELF .mdebug section. */ | |
1453 | const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap; | |
1454 | ||
8d6337fe RM |
1455 | /* This function implements `bfd_elf_bfd_from_remote_memory'; |
1456 | see elf.c, elfcode.h. */ | |
1457 | bfd *(*elf_backend_bfd_from_remote_memory) | |
f0a5d95a | 1458 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
5979d6b6 AM |
1459 | int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr, |
1460 | bfd_size_type len)); | |
8d6337fe | 1461 | |
0a1b45a2 | 1462 | bool (*elf_backend_core_find_build_id) (bfd *, bfd_vma); |
864619bb | 1463 | |
4c45e5c9 JJ |
1464 | /* This function is used by `_bfd_elf_get_synthetic_symtab'; |
1465 | see elf.c. */ | |
1466 | bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *); | |
1467 | ||
a4d8e49b | 1468 | /* Is symbol defined in common section? */ |
0a1b45a2 | 1469 | bool (*common_definition) (Elf_Internal_Sym *); |
a4d8e49b L |
1470 | |
1471 | /* Return a common section index for section. */ | |
1472 | unsigned int (*common_section_index) (asection *); | |
1473 | ||
1474 | /* Return a common section for section. */ | |
1475 | asection *(*common_section) (asection *); | |
1476 | ||
1477 | /* Return TRUE if we can merge 2 definitions. */ | |
0a1b45a2 | 1478 | bool (*merge_symbol) (struct elf_link_hash_entry *, |
5d13b3b3 | 1479 | const Elf_Internal_Sym *, asection **, |
0a1b45a2 | 1480 | bool, bool, |
5d13b3b3 | 1481 | bfd *, const asection *); |
a4d8e49b | 1482 | |
fdc90cb4 | 1483 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
0a1b45a2 | 1484 | bool (*elf_hash_symbol) (struct elf_link_hash_entry *); |
fdc90cb4 | 1485 | |
f16a9783 MS |
1486 | /* If non-NULL, called to register the location of XLAT_LOC within |
1487 | .MIPS.xhash at which real final dynindx for H will be written. | |
1488 | If XLAT_LOC is zero, the symbol is not included in | |
1489 | .MIPS.xhash and no dynindx will be written. */ | |
1490 | void (*record_xhash_symbol) | |
1491 | (struct elf_link_hash_entry *h, bfd_vma xlat_loc); | |
1492 | ||
fcb93ecf | 1493 | /* Return TRUE if type is a function symbol type. */ |
0a1b45a2 | 1494 | bool (*is_function_type) (unsigned int type); |
fcb93ecf | 1495 | |
aef36ac1 AM |
1496 | /* If the ELF symbol SYM might be a function in SEC, return the |
1497 | function size and set *CODE_OFF to the function's entry point, | |
1498 | otherwise return zero. */ | |
1499 | bfd_size_type (*maybe_function_sym) (const asymbol *sym, asection *sec, | |
1500 | bfd_vma *code_off); | |
9f296da3 | 1501 | |
bce964aa AM |
1502 | /* Given NAME, the name of a relocation section stripped of its |
1503 | .rel/.rela prefix, return the section in ABFD to which the | |
1504 | relocations apply. */ | |
1505 | asection *(*get_reloc_section) (bfd *abfd, const char *name); | |
bd53a53a | 1506 | |
5522f910 NC |
1507 | /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which |
1508 | has a type >= SHT_LOOS. Returns TRUE if the fields were initialised, | |
1509 | FALSE otherwise. Can be called multiple times for a given section, | |
1510 | until it returns TRUE. Most of the times it is called ISECTION will be | |
1511 | set to an input section that might be associated with the output section. | |
1512 | The last time that it is called, ISECTION will be set to NULL. */ | |
0a1b45a2 | 1513 | bool (*elf_backend_copy_special_section_fields) |
5522f910 NC |
1514 | (const bfd *ibfd, bfd *obfd, const Elf_Internal_Shdr *isection, |
1515 | Elf_Internal_Shdr *osection); | |
07d6d2b8 | 1516 | |
185d09ad | 1517 | /* Used to handle bad SHF_LINK_ORDER input. */ |
52d45da3 | 1518 | void (*link_order_error_handler) (const char *, ...); |
185d09ad | 1519 | |
4c45e5c9 JJ |
1520 | /* Name of the PLT relocation section. */ |
1521 | const char *relplt_name; | |
1522 | ||
252b5132 RH |
1523 | /* Alternate EM_xxxx machine codes for this backend. */ |
1524 | int elf_machine_alt1; | |
1525 | int elf_machine_alt2; | |
1526 | ||
1527 | const struct elf_size_info *s; | |
1528 | ||
29ef7005 L |
1529 | /* An array of target specific special sections. */ |
1530 | const struct bfd_elf_special_section *special_sections; | |
1531 | ||
6f2f2c9d DJ |
1532 | /* The size in bytes of the header for the GOT. This includes the |
1533 | so-called reserved entries on some systems. */ | |
252b5132 | 1534 | bfd_vma got_header_size; |
252b5132 | 1535 | |
10455f89 HPN |
1536 | /* The size of the GOT entry for the symbol pointed to by H if non-NULL, |
1537 | otherwise by the local symbol with index SYMNDX in IBFD. */ | |
1538 | bfd_vma (*got_elt_size) (bfd *, struct bfd_link_info *, | |
1539 | struct elf_link_hash_entry *h, | |
1540 | bfd *ibfd, unsigned long symndx); | |
1541 | ||
104d59d1 JM |
1542 | /* The vendor name to use for a processor-standard attributes section. */ |
1543 | const char *obj_attrs_vendor; | |
1544 | ||
1545 | /* The section name to use for a processor-standard attributes section. */ | |
1546 | const char *obj_attrs_section; | |
1547 | ||
1548 | /* Return 1, 2 or 3 to indicate what type of arguments a | |
1549 | processor-specific tag takes. */ | |
1550 | int (*obj_attrs_arg_type) (int); | |
1551 | ||
1552 | /* The section type to use for an attributes section. */ | |
1553 | unsigned int obj_attrs_section_type; | |
1554 | ||
3de4a297 JM |
1555 | /* This function determines the order in which any attributes are |
1556 | written. It must be defined for input in the range | |
1557 | LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range | |
1558 | is used in order to make unity easy). The returned value is the | |
1559 | actual tag number to place in the input position. */ | |
5aa6ff7c AS |
1560 | int (*obj_attrs_order) (int); |
1561 | ||
e8b36cd1 JM |
1562 | /* Handle merging unknown attributes; either warn and return TRUE, |
1563 | or give an error and return FALSE. */ | |
0a1b45a2 | 1564 | bool (*obj_attrs_handle_unknown) (bfd *, int); |
e8b36cd1 | 1565 | |
46bed679 L |
1566 | /* Parse GNU properties. Return the property kind. If the property |
1567 | is corrupt, issue an error message and return property_corrupt. */ | |
1568 | enum elf_property_kind (*parse_gnu_properties) (bfd *, unsigned int, | |
1569 | bfd_byte *, | |
1570 | unsigned int); | |
1571 | ||
1572 | /* Merge GNU properties. Return TRUE if property is updated. */ | |
0a1b45a2 | 1573 | bool (*merge_gnu_properties) (struct bfd_link_info *, bfd *, bfd *, |
5c3ce2bc | 1574 | elf_property *, elf_property *); |
46bed679 L |
1575 | |
1576 | /* Set up GNU properties. */ | |
fba37edd | 1577 | bfd *(*setup_gnu_properties) (struct bfd_link_info *); |
46bed679 | 1578 | |
bfb1e8c1 L |
1579 | /* Fix up GNU properties. */ |
1580 | void (*fixup_gnu_properties) (struct bfd_link_info *, | |
1581 | elf_property_list **); | |
1582 | ||
2f0c68f2 CM |
1583 | /* Encoding used for compact EH tables. */ |
1584 | int (*compact_eh_encoding) (struct bfd_link_info *); | |
1585 | ||
1586 | /* Opcode representing no unwind. */ | |
1587 | int (*cant_unwind_opcode) (struct bfd_link_info *); | |
1588 | ||
00e49dff NC |
1589 | /* Called when emitting an ELF symbol whoes input version had an |
1590 | ST_SHNDX field set to a value in the range SHN_LOPROC..SHN_HIOS. | |
1591 | Returns the value to be installed in the ST_SHNDX field of the | |
1592 | emitted symbol. If not defined, the value is left unchanged. */ | |
1593 | unsigned int (*symbol_section_index) (bfd *, elf_symbol_type *); | |
1594 | ||
a8e14f4c | 1595 | /* Called when a section has extra reloc sections. */ |
0a1b45a2 AM |
1596 | bool (*init_secondary_reloc_section) (bfd *, Elf_Internal_Shdr *, |
1597 | const char *, unsigned int); | |
a8e14f4c NC |
1598 | |
1599 | /* Called when after loading the normal relocs for a section. */ | |
0a1b45a2 | 1600 | bool (*slurp_secondary_relocs) (bfd *, asection *, asymbol **, bool); |
a8e14f4c NC |
1601 | |
1602 | /* Called after writing the normal relocs for a section. */ | |
0a1b45a2 | 1603 | bool (*write_secondary_relocs) (bfd *, asection *); |
a8e14f4c | 1604 | |
7dc98aea RO |
1605 | /* This is non-zero if static TLS segments require a special alignment. */ |
1606 | unsigned static_tls_alignment; | |
1607 | ||
9eaff861 | 1608 | /* Alignment for the PT_GNU_STACK segment. */ |
04c3a755 NS |
1609 | unsigned stack_align; |
1610 | ||
84865015 NC |
1611 | /* Flag bits to assign to a section of type SHT_STRTAB. */ |
1612 | unsigned long elf_strtab_flags; | |
1613 | ||
b34976b6 AM |
1614 | /* This is TRUE if the linker should act like collect and gather |
1615 | global constructors and destructors by name. This is TRUE for | |
86dc0f79 RH |
1616 | MIPS ELF because the Irix 5 tools can not handle the .init |
1617 | section. */ | |
1618 | unsigned collect : 1; | |
1619 | ||
b34976b6 AM |
1620 | /* This is TRUE if the linker should ignore changes to the type of a |
1621 | symbol. This is TRUE for MIPS ELF because some Irix 5 objects | |
86dc0f79 RH |
1622 | record undefined functions as STT_OBJECT although the definitions |
1623 | are STT_FUNC. */ | |
1624 | unsigned type_change_ok : 1; | |
1625 | ||
bf572ba0 MM |
1626 | /* Whether the backend may use REL relocations. (Some backends use |
1627 | both REL and RELA relocations, and this flag is set for those | |
1628 | backends.) */ | |
1629 | unsigned may_use_rel_p : 1; | |
60bcf0fa | 1630 | |
bf572ba0 MM |
1631 | /* Whether the backend may use RELA relocations. (Some backends use |
1632 | both REL and RELA relocations, and this flag is set for those | |
1633 | backends.) */ | |
1634 | unsigned may_use_rela_p : 1; | |
1635 | ||
1636 | /* Whether the default relocation type is RELA. If a backend with | |
1637 | this flag set wants REL relocations for a particular section, | |
1638 | it must note that explicitly. Similarly, if this flag is clear, | |
60bcf0fa NC |
1639 | and the backend wants RELA relocations for a particular |
1640 | section. */ | |
bf572ba0 MM |
1641 | unsigned default_use_rela_p : 1; |
1642 | ||
d35fd659 RS |
1643 | /* True if PLT and copy relocations should be RELA by default. */ |
1644 | unsigned rela_plts_and_copies_p : 1; | |
1645 | ||
b491616a AM |
1646 | /* Set if RELA relocations for a relocatable link can be handled by |
1647 | generic code. Backends that set this flag need do nothing in the | |
1648 | backend relocate_section routine for relocatable linking. */ | |
1649 | unsigned rela_normal : 1; | |
1650 | ||
64f52338 AM |
1651 | /* Set if DT_REL/DT_RELA/DT_RELSZ/DT_RELASZ should not include PLT |
1652 | relocations. */ | |
1653 | unsigned dtrel_excludes_plt : 1; | |
1654 | ||
b34976b6 | 1655 | /* TRUE if addresses "naturally" sign extend. This is used when |
86dc0f79 RH |
1656 | swapping in from Elf32 when BFD64. */ |
1657 | unsigned sign_extend_vma : 1; | |
1658 | ||
252b5132 RH |
1659 | unsigned want_got_plt : 1; |
1660 | unsigned plt_readonly : 1; | |
1661 | unsigned want_plt_sym : 1; | |
1662 | unsigned plt_not_loaded : 1; | |
1663 | unsigned plt_alignment : 4; | |
1664 | unsigned can_gc_sections : 1; | |
51b64d56 | 1665 | unsigned can_refcount : 1; |
2517a57f | 1666 | unsigned want_got_sym : 1; |
3018b441 | 1667 | unsigned want_dynbss : 1; |
5474d94f | 1668 | unsigned want_dynrelro : 1; |
6bfdb61b AM |
1669 | |
1670 | /* Targets which do not support physical addressing often require | |
1671 | that the p_paddr field in the section header to be set to zero. | |
1672 | This field indicates whether this behavior is required. */ | |
5e8d7549 | 1673 | unsigned want_p_paddr_set_to_zero : 1; |
6bfdb61b | 1674 | |
a8c75b76 AM |
1675 | /* Target has broken hardware and/or kernel that requires pages not |
1676 | to be mapped twice with different permissions. */ | |
1677 | unsigned no_page_alias : 1; | |
1678 | ||
6bfdb61b AM |
1679 | /* True if an object file lacking a .note.GNU-stack section |
1680 | should be assumed to be requesting exec stack. At least one | |
1681 | other file in the link needs to have a .note.GNU-stack section | |
1682 | for a PT_GNU_STACK segment to be created. */ | |
1683 | unsigned default_execstack : 1; | |
53291d1f AM |
1684 | |
1685 | /* True if elf_section_data(sec)->this_hdr.contents is sec->rawsize | |
1686 | in length rather than sec->size in length, if sec->rawsize is | |
1687 | non-zero and smaller than sec->size. */ | |
1688 | unsigned caches_rawsize : 1; | |
f7483970 L |
1689 | |
1690 | /* Address of protected data defined in the shared library may be | |
1691 | external, i.e., due to copy relocation. */ | |
1692 | unsigned extern_protected_data : 1; | |
23ec1e32 MR |
1693 | |
1694 | /* True if `_bfd_elf_link_renumber_dynsyms' must be called even for | |
1695 | static binaries. */ | |
1696 | unsigned always_renumber_dynsyms : 1; | |
a2f63b2e MR |
1697 | |
1698 | /* True if the 32-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid' | |
1699 | members use a 16-bit data type. */ | |
1700 | unsigned linux_prpsinfo32_ugid16 : 1; | |
3c9a7b0d MR |
1701 | |
1702 | /* True if the 64-bit Linux PRPSINFO structure's `pr_uid' and `pr_gid' | |
1703 | members use a 16-bit data type. */ | |
1704 | unsigned linux_prpsinfo64_ugid16 : 1; | |
252b5132 RH |
1705 | }; |
1706 | ||
d4730f92 BS |
1707 | /* Information about reloc sections associated with a bfd_elf_section_data |
1708 | structure. */ | |
1709 | struct bfd_elf_section_reloc_data | |
1710 | { | |
1711 | /* The ELF header for the reloc section associated with this | |
1712 | section, if any. */ | |
1713 | Elf_Internal_Shdr *hdr; | |
1714 | /* The number of relocations currently assigned to HDR. */ | |
1715 | unsigned int count; | |
1716 | /* The ELF section number of the reloc section. Only used for an | |
1717 | output file. */ | |
1718 | int idx; | |
1719 | /* Used by the backend linker to store the symbol hash table entries | |
1720 | associated with relocs against global symbols. */ | |
1721 | struct elf_link_hash_entry **hashes; | |
1722 | }; | |
1723 | ||
252b5132 RH |
1724 | /* Information stored for each BFD section in an ELF file. This |
1725 | structure is allocated by elf_new_section_hook. */ | |
1726 | ||
1727 | struct bfd_elf_section_data | |
1728 | { | |
1729 | /* The ELF header for this section. */ | |
1730 | Elf_Internal_Shdr this_hdr; | |
0c715baa | 1731 | |
b9c361e0 JL |
1732 | /* INPUT_SECTION_FLAGS if specified in the linker script. */ |
1733 | struct flag_info *section_flag_info; | |
1734 | ||
d4730f92 BS |
1735 | /* Information about the REL and RELA reloc sections associated |
1736 | with this section, if any. */ | |
1737 | struct bfd_elf_section_reloc_data rel, rela; | |
0c715baa | 1738 | |
6dc132d9 | 1739 | /* The ELF section number of this section. */ |
252b5132 | 1740 | int this_idx; |
0c715baa | 1741 | |
f0abc2a1 AM |
1742 | /* Used by the backend linker when generating a shared library to |
1743 | record the dynamic symbol index for a section symbol | |
1744 | corresponding to this section. A value of 0 means that there is | |
1745 | no dynamic symbol for this section. */ | |
1746 | int dynindx; | |
1747 | ||
38ce5b11 L |
1748 | /* A pointer to the linked-to section for SHF_LINK_ORDER. */ |
1749 | asection *linked_to; | |
1750 | ||
252b5132 RH |
1751 | /* A pointer to the swapped relocs. If the section uses REL relocs, |
1752 | rather than RELA, all the r_addend fields will be zero. This | |
1753 | pointer may be NULL. It is used by the backend linker. */ | |
1754 | Elf_Internal_Rela *relocs; | |
0c715baa | 1755 | |
f0abc2a1 AM |
1756 | /* A pointer to a linked list tracking dynamic relocs copied for |
1757 | local symbols. */ | |
c39a58e6 | 1758 | void *local_dynrel; |
0c715baa | 1759 | |
f0abc2a1 AM |
1760 | /* A pointer to the bfd section used for dynamic relocs. */ |
1761 | asection *sreloc; | |
0c715baa | 1762 | |
1126897b AM |
1763 | union { |
1764 | /* Group name, if this section is a member of a group. */ | |
1765 | const char *name; | |
1766 | ||
1767 | /* Group signature sym, if this is the SHT_GROUP section. */ | |
fc0a2244 | 1768 | struct bfd_symbol *id; |
1126897b | 1769 | } group; |
dbb410c3 | 1770 | |
b0956e01 AM |
1771 | /* For a member of a group, points to the SHT_GROUP section. |
1772 | NULL for the SHT_GROUP section itself and non-group sections. */ | |
3d7f7666 L |
1773 | asection *sec_group; |
1774 | ||
b0956e01 AM |
1775 | /* A linked list of member sections in the group. Circular when used by |
1776 | the linker. For the SHT_GROUP section, points at first member. */ | |
dbb410c3 AM |
1777 | asection *next_in_group; |
1778 | ||
9d0a14d3 RS |
1779 | /* The FDEs associated with this section. The u.fde.next_in_section |
1780 | field acts as a chain pointer. */ | |
1781 | struct eh_cie_fde *fde_list; | |
1782 | ||
2f0c68f2 CM |
1783 | /* Link from a text section to its .eh_frame_entry section. */ |
1784 | asection *eh_frame_entry; | |
1785 | ||
44466e45 NC |
1786 | /* TRUE if the section has secondary reloc sections associated with it. |
1787 | FIXME: In the future it might be better to change this into a list | |
1788 | of secondary reloc sections, making lookup easier and faster. */ | |
0a1b45a2 | 1789 | bool has_secondary_relocs; |
44466e45 | 1790 | |
f0abc2a1 | 1791 | /* A pointer used for various section optimizations. */ |
c39a58e6 | 1792 | void *sec_info; |
252b5132 RH |
1793 | }; |
1794 | ||
9f296da3 | 1795 | #define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd) |
38ce5b11 | 1796 | #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to) |
9f296da3 AM |
1797 | #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type) |
1798 | #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags) | |
fe944acf | 1799 | #define elf_section_info(sec) (elf_section_data(sec)->this_hdr.sh_info) |
9f296da3 AM |
1800 | #define elf_group_name(sec) (elf_section_data(sec)->group.name) |
1801 | #define elf_group_id(sec) (elf_section_data(sec)->group.id) | |
1802 | #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group) | |
1803 | #define elf_fde_list(sec) (elf_section_data(sec)->fde_list) | |
3d7f7666 | 1804 | #define elf_sec_group(sec) (elf_section_data(sec)->sec_group) |
2f0c68f2 | 1805 | #define elf_section_eh_frame_entry(sec) (elf_section_data(sec)->eh_frame_entry) |
252b5132 | 1806 | |
24718e3b | 1807 | #define xvec_get_elf_backend_data(xvec) \ |
f7231afc | 1808 | ((const struct elf_backend_data *) (xvec)->backend_data) |
24718e3b | 1809 | |
252b5132 | 1810 | #define get_elf_backend_data(abfd) \ |
24718e3b | 1811 | xvec_get_elf_backend_data ((abfd)->xvec) |
252b5132 | 1812 | |
3de4a297 JM |
1813 | /* The least object attributes (within an attributes subsection) known |
1814 | for any target. Some code assumes that the value 0 is not used and | |
1815 | the field for that attribute can instead be used as a marker to | |
1816 | indicate that attributes have been initialized. */ | |
59e6276b | 1817 | #define LEAST_KNOWN_OBJ_ATTRIBUTE 2 |
3de4a297 | 1818 | |
104d59d1 | 1819 | /* The maximum number of known object attributes for any target. */ |
91e22acd | 1820 | #define NUM_KNOWN_OBJ_ATTRIBUTES 71 |
104d59d1 | 1821 | |
3483fe2e AS |
1822 | /* The value of an object attribute. The type indicates whether the attribute |
1823 | holds and integer, a string, or both. It can also indicate that there can | |
8d2c8c3d AM |
1824 | be no default (i.e. all values must be written to file, even zero), or |
1825 | that the value is in error and should not be written to file. */ | |
104d59d1 JM |
1826 | |
1827 | typedef struct obj_attribute | |
1828 | { | |
3483fe2e AS |
1829 | #define ATTR_TYPE_FLAG_INT_VAL (1 << 0) |
1830 | #define ATTR_TYPE_FLAG_STR_VAL (1 << 1) | |
1831 | #define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2) | |
8d2c8c3d | 1832 | #define ATTR_TYPE_FLAG_ERROR (1 << 3) |
3483fe2e AS |
1833 | |
1834 | #define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL) | |
1835 | #define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL) | |
1836 | #define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT) | |
8d2c8c3d | 1837 | #define ATTR_TYPE_HAS_ERROR(TYPE) ((TYPE) & ATTR_TYPE_FLAG_ERROR) |
3483fe2e | 1838 | |
104d59d1 JM |
1839 | int type; |
1840 | unsigned int i; | |
1841 | char *s; | |
1842 | } obj_attribute; | |
1843 | ||
1844 | typedef struct obj_attribute_list | |
1845 | { | |
1846 | struct obj_attribute_list *next; | |
5ee4a1ca | 1847 | unsigned int tag; |
104d59d1 JM |
1848 | obj_attribute attr; |
1849 | } obj_attribute_list; | |
1850 | ||
1851 | /* Object attributes may either be defined by the processor ABI, index | |
1852 | OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific | |
1853 | (and possibly also processor-specific), index OBJ_ATTR_GNU. */ | |
1854 | #define OBJ_ATTR_PROC 0 | |
1855 | #define OBJ_ATTR_GNU 1 | |
1856 | #define OBJ_ATTR_FIRST OBJ_ATTR_PROC | |
1857 | #define OBJ_ATTR_LAST OBJ_ATTR_GNU | |
1858 | ||
1859 | /* The following object attribute tags are taken as generic, for all | |
1860 | targets and for "gnu" where there is no target standard. */ | |
1861 | enum | |
1862 | { | |
1863 | Tag_NULL = 0, | |
1864 | Tag_File = 1, | |
1865 | Tag_Section = 2, | |
1866 | Tag_Symbol = 3, | |
1867 | Tag_compatibility = 32 | |
1868 | }; | |
1869 | ||
e21e5835 NC |
1870 | /* The following struct stores information about every SystemTap section |
1871 | found in the object file. */ | |
1872 | struct sdt_note | |
1873 | { | |
1874 | struct sdt_note *next; | |
1875 | bfd_size_type size; | |
1876 | bfd_byte data[1]; | |
1877 | }; | |
1878 | ||
228e534f AM |
1879 | /* tdata information grabbed from an elf core file. */ |
1880 | struct core_elf_obj_tdata | |
1881 | { | |
1882 | int signal; | |
1883 | int pid; | |
1884 | int lwpid; | |
1885 | char* program; | |
1886 | char* command; | |
1887 | }; | |
1888 | ||
c0355132 AM |
1889 | /* Extra tdata information held for output ELF BFDs. */ |
1890 | struct output_elf_obj_tdata | |
1891 | { | |
1892 | struct elf_segment_map *seg_map; | |
1893 | struct elf_strtab_hash *strtab_ptr; | |
1894 | ||
1895 | /* STT_SECTION symbols for each section */ | |
1896 | asymbol **section_syms; | |
1897 | ||
1898 | /* Used to determine if PT_GNU_EH_FRAME segment header should be | |
1899 | created. */ | |
1900 | asection *eh_frame_hdr; | |
1901 | ||
1902 | /* NT_GNU_BUILD_ID note type info. */ | |
1903 | struct | |
1904 | { | |
0a1b45a2 | 1905 | bool (*after_write_object_contents) (bfd *); |
c0355132 AM |
1906 | const char *style; |
1907 | asection *sec; | |
1908 | } build_id; | |
1909 | ||
1910 | /* Records the result of `get_program_header_size'. */ | |
1911 | bfd_size_type program_header_size; | |
1912 | ||
1913 | /* Used when laying out sections. */ | |
1914 | file_ptr next_file_pos; | |
1915 | ||
8c0546e9 L |
1916 | /* Linker information. */ |
1917 | struct bfd_link_info *link_info; | |
1918 | ||
c0355132 AM |
1919 | int num_section_syms; |
1920 | unsigned int shstrtab_section, strtab_section; | |
1921 | ||
1922 | /* Segment flags for the PT_GNU_STACK segment. */ | |
1923 | unsigned int stack_flags; | |
1924 | ||
c0355132 | 1925 | /* Used to determine if the e_flags field has been initialized */ |
0a1b45a2 | 1926 | bool flags_init; |
c0355132 AM |
1927 | }; |
1928 | ||
99fabbc9 JL |
1929 | /* Indicate if the bfd contains SHF_GNU_MBIND/SHF_GNU_RETAIN sections or |
1930 | symbols that have the STT_GNU_IFUNC symbol type or STB_GNU_UNIQUE | |
1931 | binding. Used to set the osabi field in the ELF header structure. */ | |
06f44071 | 1932 | enum elf_gnu_osabi |
9eaff861 | 1933 | { |
df3a023b | 1934 | elf_gnu_osabi_mbind = 1 << 0, |
06f44071 AM |
1935 | elf_gnu_osabi_ifunc = 1 << 1, |
1936 | elf_gnu_osabi_unique = 1 << 2, | |
99fabbc9 | 1937 | elf_gnu_osabi_retain = 1 << 3, |
9eaff861 | 1938 | }; |
13a2df29 | 1939 | |
6a40cf0c NC |
1940 | typedef struct elf_section_list |
1941 | { | |
07d6d2b8 AM |
1942 | Elf_Internal_Shdr hdr; |
1943 | unsigned int ndx; | |
6a40cf0c NC |
1944 | struct elf_section_list * next; |
1945 | } elf_section_list; | |
9eaff861 | 1946 | |
0b4453c7 AM |
1947 | enum dynamic_lib_link_class { |
1948 | DYN_NORMAL = 0, | |
1949 | DYN_AS_NEEDED = 1, | |
1950 | DYN_DT_NEEDED = 2, | |
1951 | DYN_NO_ADD_NEEDED = 4, | |
1952 | DYN_NO_NEEDED = 8 | |
1953 | }; | |
1954 | ||
252b5132 RH |
1955 | /* Some private data is stashed away for future use using the tdata pointer |
1956 | in the bfd structure. */ | |
1957 | ||
1958 | struct elf_obj_tdata | |
1959 | { | |
1960 | Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */ | |
1961 | Elf_Internal_Shdr **elf_sect_ptr; | |
1962 | Elf_Internal_Phdr *phdr; | |
252b5132 RH |
1963 | Elf_Internal_Shdr symtab_hdr; |
1964 | Elf_Internal_Shdr shstrtab_hdr; | |
1965 | Elf_Internal_Shdr strtab_hdr; | |
1966 | Elf_Internal_Shdr dynsymtab_hdr; | |
1967 | Elf_Internal_Shdr dynstrtab_hdr; | |
1968 | Elf_Internal_Shdr dynversym_hdr; | |
1969 | Elf_Internal_Shdr dynverref_hdr; | |
1970 | Elf_Internal_Shdr dynverdef_hdr; | |
6a40cf0c | 1971 | elf_section_list * symtab_shndx_list; |
dbb410c3 AM |
1972 | bfd_vma gp; /* The gp value */ |
1973 | unsigned int gp_size; /* The gp size */ | |
c0355132 | 1974 | unsigned int num_elf_sections; /* elf_sect_ptr size */ |
a86c6c19 | 1975 | unsigned char *being_created; |
dbb410c3 | 1976 | |
252b5132 RH |
1977 | /* A mapping from external symbols to entries in the linker hash |
1978 | table, used when linking. This is indexed by the symbol index | |
1979 | minus the sh_info field of the symbol table header. */ | |
1980 | struct elf_link_hash_entry **sym_hashes; | |
1981 | ||
5cab59f6 AM |
1982 | /* Track usage and final offsets of GOT entries for local symbols. |
1983 | This array is indexed by symbol index. Elements are used | |
1984 | identically to "got" in struct elf_link_hash_entry. */ | |
252b5132 RH |
1985 | union |
1986 | { | |
1987 | bfd_signed_vma *refcounts; | |
1988 | bfd_vma *offsets; | |
5cab59f6 | 1989 | struct got_entry **ents; |
252b5132 RH |
1990 | } local_got; |
1991 | ||
252b5132 RH |
1992 | /* The linker ELF emulation code needs to let the backend ELF linker |
1993 | know what filename should be used for a dynamic object if the | |
1994 | dynamic object is found using a search. The emulation code then | |
1995 | sometimes needs to know what name was actually used. Until the | |
1996 | file has been added to the linker symbol table, this field holds | |
1997 | the name the linker wants. After it has been added, it holds the | |
1998 | name actually used, which will be the DT_SONAME entry if there is | |
1999 | one. */ | |
2000 | const char *dt_name; | |
2001 | ||
7ee314fa | 2002 | /* The linker emulation needs to know what audit libs |
23209a78 | 2003 | are used by a dynamic object. */ |
7ee314fa AM |
2004 | const char *dt_audit; |
2005 | ||
252b5132 | 2006 | /* Used by find_nearest_line entry point. */ |
c39a58e6 | 2007 | void *line_info; |
252b5132 | 2008 | |
3e932841 | 2009 | /* A place to stash dwarf1 info for this bfd. */ |
252b5132 RH |
2010 | struct dwarf1_debug *dwarf1_find_line_info; |
2011 | ||
3e932841 | 2012 | /* A place to stash dwarf2 info for this bfd. */ |
c39a58e6 | 2013 | void *dwarf2_find_line_info; |
252b5132 | 2014 | |
619a703e AM |
2015 | /* Stash away info for yet another find line/function variant. */ |
2016 | void *elf_find_function_cache; | |
2017 | ||
252b5132 RH |
2018 | /* Number of symbol version definitions we are about to emit. */ |
2019 | unsigned int cverdefs; | |
2020 | ||
2021 | /* Number of symbol version references we are about to emit. */ | |
2022 | unsigned int cverrefs; | |
2023 | ||
2024 | /* Symbol version definitions in external objects. */ | |
2025 | Elf_Internal_Verdef *verdef; | |
2026 | ||
2027 | /* Symbol version references to external objects. */ | |
2028 | Elf_Internal_Verneed *verref; | |
2029 | ||
9d0a14d3 RS |
2030 | /* A pointer to the .eh_frame section. */ |
2031 | asection *eh_frame_section; | |
2032 | ||
c0f00686 | 2033 | /* Symbol buffer. */ |
c15f73f9 | 2034 | void *symbuf; |
104d59d1 | 2035 | |
46bed679 L |
2036 | /* List of GNU properties. Will be updated by setup_gnu_properties |
2037 | after all input GNU properties are merged for output. */ | |
2038 | elf_property_list *properties; | |
2039 | ||
104d59d1 JM |
2040 | obj_attribute known_obj_attributes[2][NUM_KNOWN_OBJ_ATTRIBUTES]; |
2041 | obj_attribute_list *other_obj_attributes[2]; | |
20a761b5 | 2042 | |
e21e5835 NC |
2043 | /* Linked-list containing information about every Systemtap section |
2044 | found in the object file. Each section corresponds to one entry | |
2045 | in the list. */ | |
2046 | struct sdt_note *sdt_note_head; | |
2047 | ||
c0355132 | 2048 | Elf_Internal_Shdr **group_sect_ptr; |
cda7e560 | 2049 | unsigned int num_group; |
c0355132 | 2050 | |
564e11c9 JW |
2051 | /* Index into group_sect_ptr, updated by setup_group when finding a |
2052 | section's group. Used to optimize subsequent group searches. */ | |
2053 | unsigned int group_search_offset; | |
2054 | ||
6a40cf0c | 2055 | unsigned int symtab_section, dynsymtab_section; |
c0355132 | 2056 | unsigned int dynversym_section, dynverdef_section, dynverref_section; |
d8045f23 | 2057 | |
0ffa91dd NC |
2058 | /* An identifier used to distinguish different target |
2059 | specific extensions to this structure. */ | |
a5b4ee94 | 2060 | ENUM_BITFIELD (elf_target_id) object_id : 6; |
228e534f | 2061 | |
c0355132 AM |
2062 | /* Whether a dyanmic object was specified normally on the linker |
2063 | command line, or was specified when --as-needed was in effect, | |
2064 | or was found via a DT_NEEDED entry. */ | |
a5b4ee94 L |
2065 | ENUM_BITFIELD (dynamic_lib_link_class) dyn_lib_class : 4; |
2066 | ||
06f44071 | 2067 | /* Whether the bfd uses OS specific bits that require ELFOSABI_GNU. */ |
99fabbc9 | 2068 | ENUM_BITFIELD (elf_gnu_osabi) has_gnu_osabi : 4; |
a5b4ee94 L |
2069 | |
2070 | /* Whether if the bfd contains the GNU_PROPERTY_NO_COPY_ON_PROTECTED | |
2071 | property. */ | |
2072 | unsigned int has_no_copy_on_protected : 1; | |
c0355132 AM |
2073 | |
2074 | /* Irix 5 often screws up the symbol table, sorting local symbols | |
2075 | after global symbols. This flag is set if the symbol table in | |
2076 | this BFD appears to be screwed up. If it is, we ignore the | |
2077 | sh_info field in the symbol table header, and always read all the | |
2078 | symbols. */ | |
a5b4ee94 | 2079 | unsigned int bad_symtab : 1; |
c0355132 | 2080 | |
228e534f AM |
2081 | /* Information grabbed from an elf core file. */ |
2082 | struct core_elf_obj_tdata *core; | |
c0355132 AM |
2083 | |
2084 | /* More information held for output ELF BFDs. */ | |
2085 | struct output_elf_obj_tdata *o; | |
252b5132 RH |
2086 | }; |
2087 | ||
2088 | #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) | |
0ffa91dd NC |
2089 | |
2090 | #define elf_object_id(bfd) (elf_tdata(bfd) -> object_id) | |
c0355132 | 2091 | #define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size) |
252b5132 RH |
2092 | #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header) |
2093 | #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr) | |
9ad5cbcf | 2094 | #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections) |
c0355132 | 2095 | #define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map) |
8c0546e9 | 2096 | #define elf_link_info(bfd) (elf_tdata(bfd) -> o->link_info) |
c0355132 AM |
2097 | #define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos) |
2098 | #define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr) | |
c0355132 AM |
2099 | #define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags) |
2100 | #define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr) | |
252b5132 | 2101 | #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section) |
6a40cf0c | 2102 | #define elf_symtab_shndx_list(bfd) (elf_tdata(bfd) -> symtab_shndx_list) |
c0355132 AM |
2103 | #define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section) |
2104 | #define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section) | |
0ffa91dd | 2105 | #define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr) |
252b5132 RH |
2106 | #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section) |
2107 | #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section) | |
2108 | #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section) | |
2109 | #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section) | |
9d0a14d3 RS |
2110 | #define elf_eh_frame_section(bfd) \ |
2111 | (elf_tdata(bfd) -> eh_frame_section) | |
c0355132 AM |
2112 | #define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms) |
2113 | #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms) | |
252b5132 RH |
2114 | #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo) |
2115 | #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus) | |
2116 | #define elf_gp(bfd) (elf_tdata(bfd) -> gp) | |
2117 | #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size) | |
2118 | #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes) | |
2119 | #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts) | |
2120 | #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets) | |
5cab59f6 | 2121 | #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents) |
252b5132 | 2122 | #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name) |
7ee314fa | 2123 | #define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit) |
4a43e768 | 2124 | #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class) |
252b5132 | 2125 | #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab) |
c0355132 | 2126 | #define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init) |
104d59d1 JM |
2127 | #define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes) |
2128 | #define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes) | |
2129 | #define elf_known_obj_attributes_proc(bfd) \ | |
2130 | (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC]) | |
2131 | #define elf_other_obj_attributes_proc(bfd) \ | |
2132 | (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC]) | |
46bed679 | 2133 | #define elf_properties(bfd) (elf_tdata (bfd) -> properties) |
a5b4ee94 L |
2134 | #define elf_has_no_copy_on_protected(bfd) \ |
2135 | (elf_tdata(bfd) -> has_no_copy_on_protected) | |
252b5132 RH |
2136 | \f |
2137 | extern void _bfd_elf_swap_verdef_in | |
c39a58e6 | 2138 | (bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *); |
252b5132 | 2139 | extern void _bfd_elf_swap_verdef_out |
c39a58e6 | 2140 | (bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *); |
252b5132 | 2141 | extern void _bfd_elf_swap_verdaux_in |
c39a58e6 | 2142 | (bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *); |
252b5132 | 2143 | extern void _bfd_elf_swap_verdaux_out |
c39a58e6 | 2144 | (bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *); |
252b5132 | 2145 | extern void _bfd_elf_swap_verneed_in |
c39a58e6 | 2146 | (bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *); |
252b5132 | 2147 | extern void _bfd_elf_swap_verneed_out |
c39a58e6 | 2148 | (bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *); |
252b5132 | 2149 | extern void _bfd_elf_swap_vernaux_in |
c39a58e6 | 2150 | (bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *); |
252b5132 | 2151 | extern void _bfd_elf_swap_vernaux_out |
c39a58e6 | 2152 | (bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *); |
252b5132 | 2153 | extern void _bfd_elf_swap_versym_in |
c39a58e6 | 2154 | (bfd *, const Elf_External_Versym *, Elf_Internal_Versym *); |
252b5132 | 2155 | extern void _bfd_elf_swap_versym_out |
c39a58e6 | 2156 | (bfd *, const Elf_Internal_Versym *, Elf_External_Versym *); |
252b5132 | 2157 | |
cb33740c | 2158 | extern unsigned int _bfd_elf_section_from_bfd_section |
c39a58e6 | 2159 | (bfd *, asection *); |
252b5132 | 2160 | extern char *bfd_elf_string_from_elf_section |
c39a58e6 | 2161 | (bfd *, unsigned, unsigned); |
6cdc0ccc | 2162 | extern Elf_Internal_Sym *bfd_elf_get_elf_syms |
c39a58e6 AM |
2163 | (bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *, |
2164 | Elf_External_Sym_Shndx *); | |
6d5944fc | 2165 | extern char * bfd_elf_get_str_section (bfd *, unsigned int); |
0e2cfdce | 2166 | extern const char *bfd_elf_sym_name |
26c61ae5 | 2167 | (bfd *, Elf_Internal_Shdr *, Elf_Internal_Sym *, asection *); |
252b5132 | 2168 | |
0a1b45a2 | 2169 | extern bool _bfd_elf_copy_private_bfd_data |
c39a58e6 | 2170 | (bfd *, bfd *); |
0a1b45a2 | 2171 | extern bool _bfd_elf_print_private_bfd_data |
c39a58e6 | 2172 | (bfd *, void *); |
60bb06bc | 2173 | const char * _bfd_elf_get_symbol_version_string |
0a1b45a2 | 2174 | (bfd *, asymbol *, bool, bool *); |
dc810e39 | 2175 | extern void bfd_elf_print_symbol |
c39a58e6 | 2176 | (bfd *, void *, asymbol *, bfd_print_symbol_type); |
dc810e39 | 2177 | |
8c946ed5 | 2178 | extern unsigned int _bfd_elf_eh_frame_address_size |
76c20d54 | 2179 | (bfd *, const asection *); |
ec3391e7 AO |
2180 | extern bfd_byte _bfd_elf_encode_eh_address |
2181 | (bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset, | |
2182 | asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded); | |
0a1b45a2 | 2183 | extern bool _bfd_elf_can_make_relative |
ec3391e7 AO |
2184 | (bfd *input_bfd, struct bfd_link_info *info, asection *eh_frame_section); |
2185 | ||
dc810e39 | 2186 | extern enum elf_reloc_type_class _bfd_elf_reloc_type_class |
7e612e98 AM |
2187 | (const struct bfd_link_info *, const asection *, |
2188 | const Elf_Internal_Rela *); | |
f8df10f4 | 2189 | extern bfd_vma _bfd_elf_rela_local_sym |
8517fae7 | 2190 | (bfd *, Elf_Internal_Sym *, asection **, Elf_Internal_Rela *); |
c629eae0 | 2191 | extern bfd_vma _bfd_elf_rel_local_sym |
c39a58e6 | 2192 | (bfd *, Elf_Internal_Sym *, asection **, bfd_vma); |
c629eae0 | 2193 | extern bfd_vma _bfd_elf_section_offset |
c39a58e6 | 2194 | (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
db6751f2 | 2195 | |
dc810e39 | 2196 | extern unsigned long bfd_elf_hash |
c39a58e6 | 2197 | (const char *); |
fdc90cb4 JJ |
2198 | extern unsigned long bfd_elf_gnu_hash |
2199 | (const char *); | |
252b5132 | 2200 | |
dc810e39 | 2201 | extern bfd_reloc_status_type bfd_elf_generic_reloc |
c39a58e6 | 2202 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
0a1b45a2 | 2203 | extern bool bfd_elf_allocate_object |
4dfe6ac6 | 2204 | (bfd *, size_t, enum elf_target_id); |
0a1b45a2 | 2205 | extern bool bfd_elf_make_object |
c39a58e6 | 2206 | (bfd *); |
0a1b45a2 | 2207 | extern bool bfd_elf_mkcorefile |
c39a58e6 | 2208 | (bfd *); |
0a1b45a2 | 2209 | extern bool _bfd_elf_make_section_from_shdr |
6dc132d9 | 2210 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
0a1b45a2 | 2211 | extern bool _bfd_elf_make_section_from_phdr |
c39a58e6 | 2212 | (bfd *, Elf_Internal_Phdr *, int, const char *); |
252b5132 | 2213 | extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc |
c39a58e6 | 2214 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
252b5132 | 2215 | extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create |
c39a58e6 | 2216 | (bfd *); |
9f7c3e5e | 2217 | extern void _bfd_elf_link_hash_table_free |
d495ab0d | 2218 | (bfd *); |
c61b8717 | 2219 | extern void _bfd_elf_link_hash_copy_indirect |
fcfa13d2 | 2220 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
c39a58e6 | 2221 | struct elf_link_hash_entry *); |
c61b8717 | 2222 | extern void _bfd_elf_link_hash_hide_symbol |
0a1b45a2 | 2223 | (struct bfd_link_info *, struct elf_link_hash_entry *, bool); |
34a87bb0 L |
2224 | extern void _bfd_elf_link_hide_symbol |
2225 | (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *); | |
0a1b45a2 | 2226 | extern bool _bfd_elf_link_hash_fixup_symbol |
508c3946 | 2227 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
0a1b45a2 | 2228 | extern bool _bfd_elf_link_hash_table_init |
c39a58e6 AM |
2229 | (struct elf_link_hash_table *, bfd *, |
2230 | struct bfd_hash_entry *(*) | |
66eb6687 | 2231 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *), |
4dfe6ac6 | 2232 | unsigned int, enum elf_target_id); |
0a1b45a2 AM |
2233 | extern bool _bfd_elf_slurp_version_tables |
2234 | (bfd *, bool); | |
2235 | extern bool _bfd_elf_merge_sections | |
c39a58e6 | 2236 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 2237 | extern bool _bfd_elf_match_sections_by_type |
ecca9871 | 2238 | (bfd *, const asection *, bfd *, const asection *); |
0a1b45a2 | 2239 | extern bool bfd_elf_is_group_section |
72adc230 | 2240 | (bfd *, const struct bfd_section *); |
cb7f4b29 AM |
2241 | extern const char *bfd_elf_group_name |
2242 | (bfd *, const struct bfd_section *); | |
0a1b45a2 | 2243 | extern bool _bfd_elf_section_already_linked |
c77ec726 | 2244 | (bfd *, asection *, struct bfd_link_info *); |
1126897b | 2245 | extern void bfd_elf_set_group_contents |
c39a58e6 | 2246 | (bfd *, asection *, void *); |
76359541 TP |
2247 | extern unsigned int _bfd_elf_filter_global_symbols |
2248 | (bfd *, struct bfd_link_info *, asymbol **, long); | |
01b3c8ab | 2249 | extern asection *_bfd_elf_check_kept_section |
c0f00686 | 2250 | (asection *, struct bfd_link_info *); |
dbaa2011 | 2251 | #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms |
1338dd10 PB |
2252 | extern void _bfd_elf_copy_link_hash_symbol_type |
2253 | (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *); | |
0a1b45a2 | 2254 | extern bool _bfd_elf_size_group_sections |
d0bf826b | 2255 | (struct bfd_link_info *); |
0a1b45a2 | 2256 | extern bool _bfd_elf_fixup_group_sections |
d0bf826b | 2257 | (bfd *, asection *); |
0a1b45a2 | 2258 | extern bool _bfd_elf_copy_private_header_data |
80fccad2 | 2259 | (bfd *, bfd *); |
0a1b45a2 | 2260 | extern bool _bfd_elf_copy_private_symbol_data |
c39a58e6 | 2261 | (bfd *, asymbol *, bfd *, asymbol *); |
ccd2ec6a L |
2262 | #define _bfd_generic_init_private_section_data \ |
2263 | _bfd_elf_init_private_section_data | |
0a1b45a2 | 2264 | extern bool _bfd_elf_init_private_section_data |
ccd2ec6a | 2265 | (bfd *, asection *, bfd *, asection *, struct bfd_link_info *); |
0a1b45a2 | 2266 | extern bool _bfd_elf_copy_private_section_data |
c39a58e6 | 2267 | (bfd *, asection *, bfd *, asection *); |
0a1b45a2 | 2268 | extern bool _bfd_elf_write_object_contents |
c39a58e6 | 2269 | (bfd *); |
0a1b45a2 | 2270 | extern bool _bfd_elf_write_corefile_contents |
c39a58e6 | 2271 | (bfd *); |
0a1b45a2 | 2272 | extern bool _bfd_elf_set_section_contents |
0f867abe | 2273 | (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type); |
dc810e39 | 2274 | extern long _bfd_elf_get_symtab_upper_bound |
c39a58e6 | 2275 | (bfd *); |
6cee3f79 | 2276 | extern long _bfd_elf_canonicalize_symtab |
c39a58e6 | 2277 | (bfd *, asymbol **); |
dc810e39 | 2278 | extern long _bfd_elf_get_dynamic_symtab_upper_bound |
c39a58e6 | 2279 | (bfd *); |
dc810e39 | 2280 | extern long _bfd_elf_canonicalize_dynamic_symtab |
c39a58e6 | 2281 | (bfd *, asymbol **); |
4c45e5c9 | 2282 | extern long _bfd_elf_get_synthetic_symtab |
c9727e01 | 2283 | (bfd *, long, asymbol **, long, asymbol **, asymbol **); |
dc810e39 | 2284 | extern long _bfd_elf_get_reloc_upper_bound |
c39a58e6 | 2285 | (bfd *, sec_ptr); |
dc810e39 | 2286 | extern long _bfd_elf_canonicalize_reloc |
c39a58e6 | 2287 | (bfd *, sec_ptr, arelent **, asymbol **); |
83bac4b0 | 2288 | extern asection * _bfd_elf_get_dynamic_reloc_section |
0a1b45a2 | 2289 | (bfd *, asection *, bool); |
83bac4b0 | 2290 | extern asection * _bfd_elf_make_dynamic_reloc_section |
0a1b45a2 | 2291 | (asection *, bfd *, unsigned int, bfd *, bool); |
dc810e39 | 2292 | extern long _bfd_elf_get_dynamic_reloc_upper_bound |
c39a58e6 | 2293 | (bfd *); |
dc810e39 | 2294 | extern long _bfd_elf_canonicalize_dynamic_reloc |
c39a58e6 | 2295 | (bfd *, arelent **, asymbol **); |
dc810e39 | 2296 | extern asymbol *_bfd_elf_make_empty_symbol |
c39a58e6 | 2297 | (bfd *); |
dc810e39 | 2298 | extern void _bfd_elf_get_symbol_info |
c39a58e6 | 2299 | (bfd *, asymbol *, symbol_info *); |
0a1b45a2 | 2300 | extern bool _bfd_elf_is_local_label_name |
c39a58e6 | 2301 | (bfd *, const char *); |
dc810e39 | 2302 | extern alent *_bfd_elf_get_lineno |
c39a58e6 | 2303 | (bfd *, asymbol *); |
0a1b45a2 | 2304 | extern bool _bfd_elf_set_arch_mach |
c39a58e6 | 2305 | (bfd *, enum bfd_architecture, unsigned long); |
0a1b45a2 | 2306 | extern bool _bfd_elf_find_nearest_line |
fb167eb2 AM |
2307 | (bfd *, asymbol **, asection *, bfd_vma, |
2308 | const char **, const char **, unsigned int *, unsigned int *); | |
0a1b45a2 | 2309 | extern bool _bfd_elf_find_line |
5420f73d | 2310 | (bfd *, asymbol **, asymbol *, const char **, unsigned int *); |
0a1b45a2 | 2311 | extern bool _bfd_elf_find_inliner_info |
4ab527b0 | 2312 | (bfd *, const char **, const char **, unsigned int *); |
923b198a | 2313 | extern asymbol *_bfd_elf_find_function |
e00e8198 | 2314 | (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **); |
252b5132 RH |
2315 | #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols |
2316 | #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol | |
dc810e39 | 2317 | extern int _bfd_elf_sizeof_headers |
a6b96beb | 2318 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 2319 | extern bool _bfd_elf_new_section_hook |
c39a58e6 | 2320 | (bfd *, asection *); |
551b43fd AM |
2321 | extern const struct bfd_elf_special_section *_bfd_elf_get_special_section |
2322 | (const char *, const struct bfd_elf_special_section *, unsigned int); | |
7dcb9820 | 2323 | extern const struct bfd_elf_special_section *_bfd_elf_get_sec_type_attr |
551b43fd | 2324 | (bfd *, asection *); |
252b5132 | 2325 | |
0a1b45a2 | 2326 | extern bool _bfd_elf_link_hide_sym_by_version |
099bb8fb L |
2327 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
2328 | ||
252b5132 | 2329 | /* If the target doesn't have reloc handling written yet: */ |
0a1b45a2 | 2330 | extern bool _bfd_elf_no_info_to_howto |
c39a58e6 | 2331 | (bfd *, arelent *, Elf_Internal_Rela *); |
dc810e39 | 2332 | |
0a1b45a2 | 2333 | extern bool bfd_section_from_shdr |
c39a58e6 | 2334 | (bfd *, unsigned int shindex); |
0a1b45a2 | 2335 | extern bool bfd_section_from_phdr |
c39a58e6 | 2336 | (bfd *, Elf_Internal_Phdr *, int); |
dc810e39 AM |
2337 | |
2338 | extern int _bfd_elf_symbol_from_bfd_symbol | |
c39a58e6 | 2339 | (bfd *, asymbol **); |
dc810e39 | 2340 | |
23209a78 | 2341 | extern Elf_Internal_Sym *bfd_sym_from_r_symndx |
87d72d41 | 2342 | (struct sym_cache *, bfd *, unsigned long); |
dc810e39 | 2343 | extern asection *bfd_section_from_elf_index |
c39a58e6 | 2344 | (bfd *, unsigned int); |
2b0f7ef9 JJ |
2345 | |
2346 | extern struct elf_strtab_hash * _bfd_elf_strtab_init | |
c39a58e6 | 2347 | (void); |
2b0f7ef9 | 2348 | extern void _bfd_elf_strtab_free |
c39a58e6 | 2349 | (struct elf_strtab_hash *); |
ef53be89 | 2350 | extern size_t _bfd_elf_strtab_add |
0a1b45a2 | 2351 | (struct elf_strtab_hash *, const char *, bool); |
2b0f7ef9 | 2352 | extern void _bfd_elf_strtab_addref |
ef53be89 | 2353 | (struct elf_strtab_hash *, size_t); |
2b0f7ef9 | 2354 | extern void _bfd_elf_strtab_delref |
ef53be89 | 2355 | (struct elf_strtab_hash *, size_t); |
02be4619 | 2356 | extern unsigned int _bfd_elf_strtab_refcount |
ef53be89 | 2357 | (struct elf_strtab_hash *, size_t); |
d45f8bda | 2358 | extern void _bfd_elf_strtab_clear_all_refs |
5b677558 AM |
2359 | (struct elf_strtab_hash *); |
2360 | extern void *_bfd_elf_strtab_save | |
2361 | (struct elf_strtab_hash *); | |
2362 | extern void _bfd_elf_strtab_restore | |
2363 | (struct elf_strtab_hash *, void *); | |
2b0f7ef9 | 2364 | extern bfd_size_type _bfd_elf_strtab_size |
c39a58e6 | 2365 | (struct elf_strtab_hash *); |
22ccb849 NA |
2366 | extern bfd_size_type _bfd_elf_strtab_len |
2367 | (struct elf_strtab_hash *); | |
2b0f7ef9 | 2368 | extern bfd_size_type _bfd_elf_strtab_offset |
ef53be89 | 2369 | (struct elf_strtab_hash *, size_t); |
22ccb849 | 2370 | extern const char * _bfd_elf_strtab_str |
1ff6de03 | 2371 | (struct elf_strtab_hash *, size_t idx, bfd_size_type *offset); |
0a1b45a2 | 2372 | extern bool _bfd_elf_strtab_emit |
c39a58e6 | 2373 | (bfd *, struct elf_strtab_hash *); |
2b0f7ef9 | 2374 | extern void _bfd_elf_strtab_finalize |
c39a58e6 | 2375 | (struct elf_strtab_hash *); |
2b0f7ef9 | 2376 | |
0a1b45a2 | 2377 | extern bool bfd_elf_parse_eh_frame_entries |
2f0c68f2 | 2378 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 2379 | extern bool _bfd_elf_parse_eh_frame_entry |
2f0c68f2 | 2380 | (struct bfd_link_info *, asection *, struct elf_reloc_cookie *); |
ca92cecb RS |
2381 | extern void _bfd_elf_parse_eh_frame |
2382 | (bfd *, struct bfd_link_info *, asection *, struct elf_reloc_cookie *); | |
0a1b45a2 | 2383 | extern bool _bfd_elf_end_eh_frame_parsing |
2f0c68f2 CM |
2384 | (struct bfd_link_info *info); |
2385 | ||
0a1b45a2 | 2386 | extern bool _bfd_elf_discard_section_eh_frame |
c39a58e6 | 2387 | (bfd *, struct bfd_link_info *, asection *, |
0a1b45a2 AM |
2388 | bool (*) (bfd_vma, void *), struct elf_reloc_cookie *); |
2389 | extern bool _bfd_elf_adjust_eh_frame_global_symbol | |
d7153c4a | 2390 | (struct elf_link_hash_entry *, void *); |
0a1b45a2 | 2391 | extern bool _bfd_elf_discard_section_eh_frame_hdr |
c39a58e6 | 2392 | (bfd *, struct bfd_link_info *); |
65765700 | 2393 | extern bfd_vma _bfd_elf_eh_frame_section_offset |
92e4ec35 | 2394 | (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
0a1b45a2 | 2395 | extern bool _bfd_elf_write_section_eh_frame |
c39a58e6 | 2396 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
0a1b45a2 | 2397 | bool _bfd_elf_write_section_eh_frame_entry |
2f0c68f2 | 2398 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
0a1b45a2 AM |
2399 | extern bool _bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info *); |
2400 | extern bool _bfd_elf_write_section_eh_frame_hdr | |
c39a58e6 | 2401 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 2402 | extern bool _bfd_elf_eh_frame_present |
9a2a56cc | 2403 | (struct bfd_link_info *); |
0a1b45a2 | 2404 | extern bool _bfd_elf_eh_frame_entry_present |
2f0c68f2 | 2405 | (struct bfd_link_info *); |
0a1b45a2 | 2406 | extern bool _bfd_elf_maybe_strip_eh_frame_hdr |
c39a58e6 | 2407 | (struct bfd_link_info *); |
65765700 | 2408 | |
0a1b45a2 | 2409 | extern bool _bfd_elf_hash_symbol (struct elf_link_hash_entry *); |
fdc90cb4 | 2410 | |
dc810e39 | 2411 | extern long _bfd_elf_link_lookup_local_dynindx |
c39a58e6 | 2412 | (struct bfd_link_info *, bfd *, long); |
0a1b45a2 | 2413 | extern bool _bfd_elf_compute_section_file_positions |
c39a58e6 | 2414 | (bfd *, struct bfd_link_info *); |
dc810e39 | 2415 | extern file_ptr _bfd_elf_assign_file_position_for_section |
0a1b45a2 AM |
2416 | (Elf_Internal_Shdr *, file_ptr, bool); |
2417 | extern bool _bfd_elf_modify_headers | |
6d6c25c8 | 2418 | (bfd *, struct bfd_link_info *); |
dc810e39 | 2419 | |
0a1b45a2 | 2420 | extern bool _bfd_elf_validate_reloc |
c39a58e6 | 2421 | (bfd *, arelent *); |
dc810e39 | 2422 | |
0a1b45a2 AM |
2423 | extern bool bfd_elf_record_link_assignment |
2424 | (bfd *, struct bfd_link_info *, const char *, bool, | |
2425 | bool); | |
2426 | extern bool bfd_elf_stack_segment_size (bfd *, struct bfd_link_info *, | |
2427 | const char *, bfd_vma); | |
2428 | extern bool bfd_elf_size_dynamic_sections | |
0b4453c7 AM |
2429 | (bfd *, const char *, const char *, const char *, const char *, const char *, |
2430 | const char * const *, struct bfd_link_info *, struct bfd_section **); | |
0a1b45a2 | 2431 | extern bool bfd_elf_size_dynsym_hash_dynstr |
0b4453c7 | 2432 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 2433 | extern bool bfd_elf_get_bfd_needed_list |
0b4453c7 AM |
2434 | (bfd *, struct bfd_link_needed_list **); |
2435 | extern struct bfd_link_needed_list *bfd_elf_get_needed_list | |
2436 | (bfd *, struct bfd_link_info *); | |
2437 | extern void bfd_elf_set_dt_needed_name | |
2438 | (bfd *, const char *); | |
2439 | extern const char *bfd_elf_get_dt_soname | |
2440 | (bfd *); | |
2441 | extern void bfd_elf_set_dyn_lib_class | |
2442 | (bfd *, enum dynamic_lib_link_class); | |
2443 | extern int bfd_elf_get_dyn_lib_class | |
2444 | (bfd *); | |
2445 | extern struct bfd_link_needed_list *bfd_elf_get_runpath_list | |
2446 | (bfd *, struct bfd_link_info *); | |
2447 | extern int bfd_elf_discard_info | |
2448 | (bfd *, struct bfd_link_info *); | |
2449 | extern unsigned int _bfd_elf_default_action_discarded | |
2450 | (struct bfd_section *); | |
2451 | extern struct bfd_section *_bfd_elf_tls_setup | |
2452 | (bfd *, struct bfd_link_info *); | |
2453 | ||
0a1b45a2 | 2454 | extern bool _bfd_elf_link_create_dynamic_sections |
c39a58e6 | 2455 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 2456 | extern bool _bfd_elf_omit_section_dynsym_default |
d00dd7dc | 2457 | (bfd *, struct bfd_link_info *, asection *); |
0a1b45a2 | 2458 | extern bool _bfd_elf_omit_section_dynsym_all |
aee6f5b4 | 2459 | (bfd *, struct bfd_link_info *, asection *); |
0a1b45a2 | 2460 | extern bool _bfd_elf_create_dynamic_sections |
c39a58e6 | 2461 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 2462 | extern bool _bfd_elf_create_got_section |
c39a58e6 | 2463 | (bfd *, struct bfd_link_info *); |
2f0c68f2 | 2464 | extern asection *_bfd_elf_section_for_symbol |
0a1b45a2 | 2465 | (struct elf_reloc_cookie *, unsigned long, bool); |
d98685ac AM |
2466 | extern struct elf_link_hash_entry *_bfd_elf_define_linkage_sym |
2467 | (bfd *, struct bfd_link_info *, asection *, const char *); | |
74541ad4 AM |
2468 | extern void _bfd_elf_init_1_index_section |
2469 | (bfd *, struct bfd_link_info *); | |
2470 | extern void _bfd_elf_init_2_index_sections | |
2471 | (bfd *, struct bfd_link_info *); | |
dc810e39 | 2472 | |
0a1b45a2 | 2473 | extern bool _bfd_elfcore_make_pseudosection |
c39a58e6 | 2474 | (bfd *, char *, size_t, ufile_ptr); |
dc810e39 | 2475 | extern char *_bfd_elfcore_strndup |
c39a58e6 | 2476 | (bfd *, char *, size_t); |
dc810e39 | 2477 | |
45d6a902 | 2478 | extern Elf_Internal_Rela *_bfd_elf_link_read_relocs |
0a1b45a2 | 2479 | (bfd *, asection *, void *, Elf_Internal_Rela *, bool); |
45d6a902 | 2480 | |
0a1b45a2 | 2481 | extern bool _bfd_elf_link_output_relocs |
eac338cf PB |
2482 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, |
2483 | struct elf_link_hash_entry **); | |
45d6a902 | 2484 | |
0a1b45a2 | 2485 | extern bool _bfd_elf_adjust_dynamic_copy |
6cabe1ea | 2486 | (struct bfd_link_info *, struct elf_link_hash_entry *, asection *); |
027297b7 | 2487 | |
0a1b45a2 AM |
2488 | extern bool _bfd_elf_dynamic_symbol_p |
2489 | (struct elf_link_hash_entry *, struct bfd_link_info *, bool); | |
f6c52c13 | 2490 | |
0a1b45a2 AM |
2491 | extern bool _bfd_elf_symbol_refs_local_p |
2492 | (struct elf_link_hash_entry *, struct bfd_link_info *, bool); | |
986a241f | 2493 | |
cdfeee4f | 2494 | extern bfd_reloc_status_type bfd_elf_perform_complex_relocation |
0f02bbd9 | 2495 | (bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma); |
d9352518 | 2496 | |
0a1b45a2 | 2497 | extern bool _bfd_elf_setup_sections |
3d7f7666 L |
2498 | (bfd *); |
2499 | ||
7dba9362 AM |
2500 | extern struct bfd_link_hash_entry *bfd_elf_define_start_stop |
2501 | (struct bfd_link_info *, const char *, asection *); | |
2502 | ||
0a1b45a2 | 2503 | extern bool _bfd_elf_init_file_header (bfd *, struct bfd_link_info *); |
06f44071 | 2504 | |
0a1b45a2 | 2505 | extern bool _bfd_elf_final_write_processing (bfd *); |
d1036acb | 2506 | |
cb001c0d | 2507 | extern bfd_cleanup bfd_elf32_object_p |
c39a58e6 | 2508 | (bfd *); |
cb001c0d | 2509 | extern bfd_cleanup bfd_elf32_core_file_p |
c39a58e6 | 2510 | (bfd *); |
dc810e39 | 2511 | extern char *bfd_elf32_core_file_failing_command |
c39a58e6 | 2512 | (bfd *); |
dc810e39 | 2513 | extern int bfd_elf32_core_file_failing_signal |
c39a58e6 | 2514 | (bfd *); |
0a1b45a2 | 2515 | extern bool bfd_elf32_core_file_matches_executable_p |
c39a58e6 | 2516 | (bfd *, bfd *); |
261b8d08 PA |
2517 | extern int bfd_elf32_core_file_pid |
2518 | (bfd *); | |
0a1b45a2 | 2519 | extern bool _bfd_elf32_core_find_build_id |
864619bb | 2520 | (bfd *, bfd_vma); |
252b5132 | 2521 | |
0a1b45a2 | 2522 | extern bool bfd_elf32_swap_symbol_in |
c39a58e6 | 2523 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
252b5132 | 2524 | extern void bfd_elf32_swap_symbol_out |
c39a58e6 | 2525 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
252b5132 | 2526 | extern void bfd_elf32_swap_reloc_in |
c39a58e6 | 2527 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2528 | extern void bfd_elf32_swap_reloc_out |
c39a58e6 | 2529 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2530 | extern void bfd_elf32_swap_reloca_in |
c39a58e6 | 2531 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2532 | extern void bfd_elf32_swap_reloca_out |
c39a58e6 | 2533 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2534 | extern void bfd_elf32_swap_phdr_in |
c39a58e6 | 2535 | (bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *); |
252b5132 | 2536 | extern void bfd_elf32_swap_phdr_out |
c39a58e6 | 2537 | (bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *); |
252b5132 | 2538 | extern void bfd_elf32_swap_dyn_in |
c39a58e6 | 2539 | (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 | 2540 | extern void bfd_elf32_swap_dyn_out |
c39a58e6 | 2541 | (bfd *, const Elf_Internal_Dyn *, void *); |
252b5132 | 2542 | extern long bfd_elf32_slurp_symbol_table |
0a1b45a2 AM |
2543 | (bfd *, asymbol **, bool); |
2544 | extern bool bfd_elf32_write_shdrs_and_ehdr | |
c39a58e6 | 2545 | (bfd *); |
252b5132 | 2546 | extern int bfd_elf32_write_out_phdrs |
c39a58e6 | 2547 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
0a1b45a2 | 2548 | extern bool bfd_elf32_checksum_contents |
20a761b5 | 2549 | (bfd * , void (*) (const void *, size_t, void *), void *); |
b9f66672 | 2550 | extern void bfd_elf32_write_relocs |
c39a58e6 | 2551 | (bfd *, asection *, void *); |
0a1b45a2 AM |
2552 | extern bool bfd_elf32_slurp_reloc_table |
2553 | (bfd *, asection *, asymbol **, bool); | |
252b5132 | 2554 | |
cb001c0d | 2555 | extern bfd_cleanup bfd_elf64_object_p |
c39a58e6 | 2556 | (bfd *); |
cb001c0d | 2557 | extern bfd_cleanup bfd_elf64_core_file_p |
c39a58e6 | 2558 | (bfd *); |
dc810e39 | 2559 | extern char *bfd_elf64_core_file_failing_command |
c39a58e6 | 2560 | (bfd *); |
dc810e39 | 2561 | extern int bfd_elf64_core_file_failing_signal |
c39a58e6 | 2562 | (bfd *); |
0a1b45a2 | 2563 | extern bool bfd_elf64_core_file_matches_executable_p |
c39a58e6 | 2564 | (bfd *, bfd *); |
261b8d08 PA |
2565 | extern int bfd_elf64_core_file_pid |
2566 | (bfd *); | |
0a1b45a2 | 2567 | extern bool _bfd_elf64_core_find_build_id |
864619bb | 2568 | (bfd *, bfd_vma); |
252b5132 | 2569 | |
0a1b45a2 | 2570 | extern bool bfd_elf64_swap_symbol_in |
c39a58e6 | 2571 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
252b5132 | 2572 | extern void bfd_elf64_swap_symbol_out |
c39a58e6 | 2573 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
252b5132 | 2574 | extern void bfd_elf64_swap_reloc_in |
c39a58e6 | 2575 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2576 | extern void bfd_elf64_swap_reloc_out |
c39a58e6 | 2577 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2578 | extern void bfd_elf64_swap_reloca_in |
c39a58e6 | 2579 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2580 | extern void bfd_elf64_swap_reloca_out |
c39a58e6 | 2581 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2582 | extern void bfd_elf64_swap_phdr_in |
c39a58e6 | 2583 | (bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *); |
252b5132 | 2584 | extern void bfd_elf64_swap_phdr_out |
c39a58e6 | 2585 | (bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *); |
252b5132 | 2586 | extern void bfd_elf64_swap_dyn_in |
c39a58e6 | 2587 | (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 | 2588 | extern void bfd_elf64_swap_dyn_out |
c39a58e6 | 2589 | (bfd *, const Elf_Internal_Dyn *, void *); |
252b5132 | 2590 | extern long bfd_elf64_slurp_symbol_table |
0a1b45a2 AM |
2591 | (bfd *, asymbol **, bool); |
2592 | extern bool bfd_elf64_write_shdrs_and_ehdr | |
c39a58e6 | 2593 | (bfd *); |
252b5132 | 2594 | extern int bfd_elf64_write_out_phdrs |
c39a58e6 | 2595 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
0a1b45a2 | 2596 | extern bool bfd_elf64_checksum_contents |
20a761b5 | 2597 | (bfd * , void (*) (const void *, size_t, void *), void *); |
b9f66672 | 2598 | extern void bfd_elf64_write_relocs |
c39a58e6 | 2599 | (bfd *, asection *, void *); |
0a1b45a2 AM |
2600 | extern bool bfd_elf64_slurp_reloc_table |
2601 | (bfd *, asection *, asymbol **, bool); | |
5a580b3a | 2602 | |
0a1b45a2 | 2603 | extern bool _bfd_elf_default_relocs_compatible |
13285a1b AM |
2604 | (const bfd_target *, const bfd_target *); |
2605 | ||
0a1b45a2 | 2606 | extern bool _bfd_elf_relocs_compatible |
13285a1b | 2607 | (const bfd_target *, const bfd_target *); |
0a1b45a2 | 2608 | extern bool _bfd_elf_notice_as_needed |
e5034e59 | 2609 | (bfd *, struct bfd_link_info *, enum notice_asneeded_action); |
13285a1b | 2610 | |
b585e899 | 2611 | extern struct bfd_link_hash_entry *_bfd_elf_archive_symbol_lookup |
8387904d | 2612 | (bfd *, struct bfd_link_info *, const char *); |
0a1b45a2 | 2613 | extern bool bfd_elf_link_add_symbols |
4ad4eba5 | 2614 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 2615 | extern bool _bfd_elf_add_dynamic_entry |
c39a58e6 | 2616 | (struct bfd_link_info *, bfd_vma, bfd_vma); |
0a1b45a2 | 2617 | extern bool _bfd_elf_strip_zero_sized_dynamic_sections |
6f6fd151 | 2618 | (struct bfd_link_info *); |
e310298c AM |
2619 | extern int bfd_elf_add_dt_needed_tag |
2620 | (bfd *, struct bfd_link_info *); | |
0a1b45a2 | 2621 | extern bool _bfd_elf_link_check_relocs |
d9689752 | 2622 | (bfd *, struct bfd_link_info *); |
252b5132 | 2623 | |
0a1b45a2 | 2624 | extern bool bfd_elf_link_record_dynamic_symbol |
c152c796 | 2625 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
30b30c21 | 2626 | |
c152c796 | 2627 | extern int bfd_elf_link_record_local_dynamic_symbol |
c39a58e6 | 2628 | (struct bfd_link_info *, bfd *, long); |
252b5132 | 2629 | |
0a1b45a2 | 2630 | extern bool _bfd_elf_close_and_cleanup |
c39a58e6 | 2631 | (bfd *); |
35330cce | 2632 | |
0a1b45a2 | 2633 | extern bool _bfd_elf_common_definition |
a4d8e49b L |
2634 | (Elf_Internal_Sym *); |
2635 | ||
2636 | extern unsigned int _bfd_elf_common_section_index | |
2637 | (asection *); | |
2638 | ||
2639 | extern asection *_bfd_elf_common_section | |
2640 | (asection *); | |
2641 | ||
10455f89 HPN |
2642 | extern bfd_vma _bfd_elf_default_got_elt_size |
2643 | (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, bfd *, | |
2644 | unsigned long); | |
2645 | ||
252b5132 | 2646 | extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn |
fc0a2244 | 2647 | (bfd *, arelent *, struct bfd_symbol *, void *, |
c39a58e6 | 2648 | asection *, bfd *, char **); |
252b5132 | 2649 | |
0a1b45a2 | 2650 | extern bool bfd_elf_final_link |
c39a58e6 | 2651 | (bfd *, struct bfd_link_info *); |
c152c796 | 2652 | |
74f0fb50 AM |
2653 | extern void _bfd_elf_gc_keep |
2654 | (struct bfd_link_info *info); | |
2655 | ||
0a1b45a2 | 2656 | extern bool bfd_elf_gc_mark_dynamic_ref_symbol |
64d03ab5 AM |
2657 | (struct elf_link_hash_entry *h, void *inf); |
2658 | ||
0a1b45a2 | 2659 | extern bool bfd_elf_gc_sections |
c39a58e6 | 2660 | (bfd *, struct bfd_link_info *); |
c152c796 | 2661 | |
0a1b45a2 | 2662 | extern bool bfd_elf_gc_record_vtinherit |
c39a58e6 | 2663 | (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
c152c796 | 2664 | |
0a1b45a2 | 2665 | extern bool bfd_elf_gc_record_vtentry |
c39a58e6 | 2666 | (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
252b5132 | 2667 | |
07adf181 AM |
2668 | extern asection *_bfd_elf_gc_mark_hook |
2669 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | |
2670 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
2671 | ||
5241d853 RS |
2672 | extern asection *_bfd_elf_gc_mark_rsec |
2673 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn, | |
0a1b45a2 | 2674 | struct elf_reloc_cookie *, bool *); |
5241d853 | 2675 | |
0a1b45a2 | 2676 | extern bool _bfd_elf_gc_mark_reloc |
5241d853 | 2677 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn, |
9d0a14d3 RS |
2678 | struct elf_reloc_cookie *); |
2679 | ||
0a1b45a2 | 2680 | extern bool _bfd_elf_gc_mark_fdes |
9d0a14d3 RS |
2681 | (struct bfd_link_info *, asection *, asection *, elf_gc_mark_hook_fn, |
2682 | struct elf_reloc_cookie *); | |
5241d853 | 2683 | |
0a1b45a2 | 2684 | extern bool _bfd_elf_gc_mark |
5241d853 | 2685 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn); |
ccfa59ea | 2686 | |
0a1b45a2 | 2687 | extern bool _bfd_elf_gc_mark_extra_sections |
7f6ab9f8 AM |
2688 | (struct bfd_link_info *, elf_gc_mark_hook_fn); |
2689 | ||
0a1b45a2 | 2690 | extern bool bfd_elf_gc_common_finalize_got_offsets |
c39a58e6 | 2691 | (bfd *, struct bfd_link_info *); |
c152c796 | 2692 | |
0a1b45a2 | 2693 | extern bool bfd_elf_gc_common_final_link |
c39a58e6 | 2694 | (bfd *, struct bfd_link_info *); |
252b5132 | 2695 | |
0a1b45a2 | 2696 | extern bool bfd_elf_reloc_symbol_deleted_p |
c39a58e6 | 2697 | (bfd_vma, void *); |
73d074b4 | 2698 | |
8ded5a0f | 2699 | extern struct elf_segment_map * _bfd_elf_make_dynamic_segment |
229fcec5 MM |
2700 | (bfd *, asection *); |
2701 | ||
0a1b45a2 | 2702 | extern bool _bfd_elf_map_sections_to_segments |
8ded5a0f AM |
2703 | (bfd *, struct bfd_link_info *); |
2704 | ||
0a1b45a2 | 2705 | extern bool _bfd_elf_is_function_type (unsigned int); |
fcb93ecf | 2706 | |
aef36ac1 AM |
2707 | extern bfd_size_type _bfd_elf_maybe_function_sym (const asymbol *, asection *, |
2708 | bfd_vma *); | |
9f296da3 | 2709 | |
bce964aa | 2710 | extern asection *_bfd_elf_plt_get_reloc_section (bfd *, const char *); |
bd53a53a | 2711 | |
94be91de JB |
2712 | extern int bfd_elf_get_default_section_type (flagword); |
2713 | ||
0a1b45a2 | 2714 | extern bool bfd_elf_lookup_section_flags |
b9c361e0 | 2715 | (struct bfd_link_info *, struct flag_info *, asection *); |
ae17ab41 | 2716 | |
2ea37f1c NC |
2717 | extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section |
2718 | (bfd * abfd, asection * section); | |
2719 | ||
14b57c7c AM |
2720 | /* PowerPC @tls opcode transform/validate. */ |
2721 | extern unsigned int _bfd_elf_ppc_at_tls_transform | |
2722 | (unsigned int, unsigned int); | |
2723 | /* PowerPC @tprel opcode transform/validate. */ | |
2724 | extern unsigned int _bfd_elf_ppc_at_tprel_transform | |
2725 | (unsigned int, unsigned int); | |
2726 | /* PowerPC elf_object_p tweak. */ | |
0a1b45a2 | 2727 | extern bool _bfd_elf_ppc_set_arch (bfd *); |
005d79fd | 2728 | /* PowerPC .gnu.attributes handling common to both 32-bit and 64-bit. */ |
0a1b45a2 | 2729 | extern bool _bfd_elf_ppc_merge_fp_attributes |
4a91d0ba | 2730 | (bfd *, struct bfd_link_info *); |
14b57c7c | 2731 | |
0b4453c7 AM |
2732 | /* Return an upper bound on the number of bytes required to store a |
2733 | copy of ABFD's program header table entries. Return -1 if an error | |
2734 | occurs; bfd_get_error will return an appropriate code. */ | |
2735 | extern long bfd_get_elf_phdr_upper_bound | |
2736 | (bfd *abfd); | |
2737 | ||
2738 | /* Copy ABFD's program header table entries to *PHDRS. The entries | |
2739 | will be stored as an array of Elf_Internal_Phdr structures, as | |
2740 | defined in include/elf/internal.h. To find out how large the | |
2741 | buffer needs to be, call bfd_get_elf_phdr_upper_bound. | |
2742 | ||
2743 | Return the number of program header table entries read, or -1 if an | |
2744 | error occurs; bfd_get_error will return an appropriate code. */ | |
2745 | extern int bfd_get_elf_phdrs | |
2746 | (bfd *abfd, void *phdrs); | |
2747 | ||
9eaff861 | 2748 | /* Exported interface for writing elf corefile notes. */ |
d4c88bbb | 2749 | extern char *elfcore_write_note |
c39a58e6 | 2750 | (bfd *, char *, int *, const char *, int, const void *, int); |
d4c88bbb | 2751 | extern char *elfcore_write_prpsinfo |
c39a58e6 | 2752 | (bfd *, char *, int *, const char *, const char *); |
d4c88bbb | 2753 | extern char *elfcore_write_prstatus |
c39a58e6 | 2754 | (bfd *, char *, int *, long, int, const void *); |
d4c88bbb | 2755 | extern char * elfcore_write_pstatus |
c39a58e6 | 2756 | (bfd *, char *, int *, long, int, const void *); |
d4c88bbb | 2757 | extern char *elfcore_write_prfpreg |
c39a58e6 | 2758 | (bfd *, char *, int *, const void *, int); |
d4c88bbb | 2759 | extern char *elfcore_write_prxfpreg |
c39a58e6 | 2760 | (bfd *, char *, int *, const void *, int); |
4339cae0 L |
2761 | extern char *elfcore_write_xstatereg |
2762 | (bfd *, char *, int *, const void *, int); | |
97753bd5 AM |
2763 | extern char *elfcore_write_ppc_vmx |
2764 | (bfd *, char *, int *, const void *, int); | |
89eeb0bc LM |
2765 | extern char *elfcore_write_ppc_vsx |
2766 | (bfd *, char *, int *, const void *, int); | |
cb2366c1 EBM |
2767 | extern char *elfcore_write_ppc_tar |
2768 | (bfd *, char *, int *, const void *, int); | |
2769 | extern char *elfcore_write_ppc_ppr | |
2770 | (bfd *, char *, int *, const void *, int); | |
2771 | extern char *elfcore_write_ppc_dscr | |
2772 | (bfd *, char *, int *, const void *, int); | |
2773 | extern char *elfcore_write_ppc_ebb | |
2774 | (bfd *, char *, int *, const void *, int); | |
2775 | extern char *elfcore_write_ppc_pmu | |
2776 | (bfd *, char *, int *, const void *, int); | |
2777 | extern char *elfcore_write_ppc_tm_cgpr | |
2778 | (bfd *, char *, int *, const void *, int); | |
2779 | extern char *elfcore_write_ppc_tm_cfpr | |
2780 | (bfd *, char *, int *, const void *, int); | |
2781 | extern char *elfcore_write_ppc_tm_cvmx | |
2782 | (bfd *, char *, int *, const void *, int); | |
2783 | extern char *elfcore_write_ppc_tm_cvsx | |
2784 | (bfd *, char *, int *, const void *, int); | |
2785 | extern char *elfcore_write_ppc_tm_spr | |
2786 | (bfd *, char *, int *, const void *, int); | |
2787 | extern char *elfcore_write_ppc_tm_ctar | |
2788 | (bfd *, char *, int *, const void *, int); | |
2789 | extern char *elfcore_write_ppc_tm_cppr | |
2790 | (bfd *, char *, int *, const void *, int); | |
2791 | extern char *elfcore_write_ppc_tm_cdscr | |
2792 | (bfd *, char *, int *, const void *, int); | |
d7eeb400 MS |
2793 | extern char *elfcore_write_s390_timer |
2794 | (bfd *, char *, int *, const void *, int); | |
2795 | extern char *elfcore_write_s390_todcmp | |
2796 | (bfd *, char *, int *, const void *, int); | |
2797 | extern char *elfcore_write_s390_todpreg | |
2798 | (bfd *, char *, int *, const void *, int); | |
2799 | extern char *elfcore_write_s390_ctrs | |
2800 | (bfd *, char *, int *, const void *, int); | |
2801 | extern char *elfcore_write_s390_prefix | |
2802 | (bfd *, char *, int *, const void *, int); | |
355b81d9 UW |
2803 | extern char *elfcore_write_s390_last_break |
2804 | (bfd *, char *, int *, const void *, int); | |
2805 | extern char *elfcore_write_s390_system_call | |
2806 | (bfd *, char *, int *, const void *, int); | |
abb3f6cc NC |
2807 | extern char *elfcore_write_s390_tdb |
2808 | (bfd *, char *, int *, const void *, int); | |
4ef9f41a AA |
2809 | extern char *elfcore_write_s390_vxrs_low |
2810 | (bfd *, char *, int *, const void *, int); | |
2811 | extern char *elfcore_write_s390_vxrs_high | |
2812 | (bfd *, char *, int *, const void *, int); | |
88ab90e8 AA |
2813 | extern char *elfcore_write_s390_gs_cb |
2814 | (bfd *, char *, int *, const void *, int); | |
2815 | extern char *elfcore_write_s390_gs_bc | |
2816 | (bfd *, char *, int *, const void *, int); | |
faa9a424 UW |
2817 | extern char *elfcore_write_arm_vfp |
2818 | (bfd *, char *, int *, const void *, int); | |
652451f8 YZ |
2819 | extern char *elfcore_write_aarch_tls |
2820 | (bfd *, char *, int *, const void *, int); | |
2821 | extern char *elfcore_write_aarch_hw_break | |
2822 | (bfd *, char *, int *, const void *, int); | |
2823 | extern char *elfcore_write_aarch_hw_watch | |
2824 | (bfd *, char *, int *, const void *, int); | |
ad1cc4e4 AH |
2825 | extern char *elfcore_write_aarch_sve |
2826 | (bfd *, char *, int *, const void *, int); | |
e6c3b5bf AH |
2827 | extern char *elfcore_write_aarch_pauth |
2828 | (bfd *, char *, int *, const void *, int); | |
27456742 AK |
2829 | extern char *elfcore_write_arc_v2 |
2830 | (bfd *, char *, int *, const void *, int); | |
db6092f3 AB |
2831 | extern char *elfcore_write_riscv_csr |
2832 | (bfd *, char *, int *, const void *, int); | |
b63a5e38 AB |
2833 | extern char *elfcore_write_gdb_tdesc |
2834 | (bfd *, char *, int *, const void *, int); | |
d4c88bbb | 2835 | extern char *elfcore_write_lwpstatus |
c39a58e6 | 2836 | (bfd *, char *, int *, long, int, const void *); |
bb864ac1 CES |
2837 | extern char *elfcore_write_register_note |
2838 | (bfd *, char *, int *, const char *, const void *, int); | |
4cb1265b MS |
2839 | extern char *elfcore_write_file_note |
2840 | (bfd *, char *, int *, const void*, int); | |
7c76fa91 | 2841 | |
70a38d42 SDJ |
2842 | /* Internal structure which holds information to be included in the |
2843 | PRPSINFO section of Linux core files. | |
2844 | ||
2845 | This is an "internal" structure in the sense that it should be used | |
2846 | to pass information to BFD (via the `elfcore_write_linux_prpsinfo' | |
2847 | function), so things like endianess shouldn't be an issue. This | |
2848 | structure will eventually be converted in one of the | |
2849 | `elf_external_linux_*' structures and written out to an output bfd | |
2850 | by one of the functions declared below. */ | |
2851 | ||
2852 | struct elf_internal_linux_prpsinfo | |
2853 | { | |
2854 | char pr_state; /* Numeric process state. */ | |
2855 | char pr_sname; /* Char for pr_state. */ | |
2856 | char pr_zomb; /* Zombie. */ | |
2857 | char pr_nice; /* Nice val. */ | |
2858 | unsigned long pr_flag; /* Flags. */ | |
2859 | unsigned int pr_uid; | |
2860 | unsigned int pr_gid; | |
2861 | int pr_pid, pr_ppid, pr_pgrp, pr_sid; | |
2862 | char pr_fname[16 + 1]; /* Filename of executable. */ | |
2863 | char pr_psargs[80 + 1]; /* Initial part of arg list. */ | |
2864 | }; | |
2865 | ||
2866 | /* Linux/most 32-bit archs. */ | |
2867 | extern char *elfcore_write_linux_prpsinfo32 | |
2868 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); | |
2869 | ||
2870 | /* Linux/most 64-bit archs. */ | |
2871 | extern char *elfcore_write_linux_prpsinfo64 | |
2872 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); | |
2873 | ||
8d6337fe | 2874 | extern bfd *_bfd_elf32_bfd_from_remote_memory |
f0a5d95a | 2875 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
fe78531d | 2876 | int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)); |
8d6337fe | 2877 | extern bfd *_bfd_elf64_bfd_from_remote_memory |
f0a5d95a | 2878 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
fe78531d | 2879 | int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)); |
8d6337fe | 2880 | |
104d59d1 JM |
2881 | extern bfd_vma bfd_elf_obj_attr_size (bfd *); |
2882 | extern void bfd_elf_set_obj_attr_contents (bfd *, bfd_byte *, bfd_vma); | |
5ee4a1ca NC |
2883 | extern int bfd_elf_get_obj_attr_int (bfd *, int, unsigned int); |
2884 | extern void bfd_elf_add_obj_attr_int (bfd *, int, unsigned int, unsigned int); | |
104d59d1 JM |
2885 | #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \ |
2886 | bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE)) | |
5ee4a1ca | 2887 | extern void bfd_elf_add_obj_attr_string (bfd *, int, unsigned int, const char *); |
104d59d1 JM |
2888 | #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \ |
2889 | bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE)) | |
5ee4a1ca NC |
2890 | extern void bfd_elf_add_obj_attr_int_string (bfd *, int, unsigned int, |
2891 | unsigned int, const char *); | |
7b86a9fa AS |
2892 | #define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \ |
2893 | bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \ | |
2894 | (INTVAL), (STRVAL)) | |
104d59d1 JM |
2895 | |
2896 | extern char *_bfd_elf_attr_strdup (bfd *, const char *); | |
2897 | extern void _bfd_elf_copy_obj_attributes (bfd *, bfd *); | |
5ee4a1ca | 2898 | extern int _bfd_elf_obj_attrs_arg_type (bfd *, int, unsigned int); |
104d59d1 | 2899 | extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *); |
0a1b45a2 | 2900 | extern bool _bfd_elf_merge_object_attributes |
50e03d47 | 2901 | (bfd *, struct bfd_link_info *); |
0a1b45a2 AM |
2902 | extern bool _bfd_elf_merge_unknown_attribute_low (bfd *, bfd *, int); |
2903 | extern bool _bfd_elf_merge_unknown_attribute_list (bfd *, bfd *); | |
d4730f92 | 2904 | extern Elf_Internal_Shdr *_bfd_elf_single_rel_hdr (asection *sec); |
0a1b45a2 | 2905 | extern bool elf_read_notes (bfd *, file_ptr, bfd_size_type, size_t); |
104d59d1 | 2906 | |
0a1b45a2 | 2907 | extern bool _bfd_elf_parse_gnu_properties |
46bed679 L |
2908 | (bfd *, Elf_Internal_Note *); |
2909 | extern elf_property * _bfd_elf_get_property | |
2910 | (bfd *, unsigned int, unsigned int); | |
fba37edd | 2911 | extern bfd *_bfd_elf_link_setup_gnu_properties |
46bed679 | 2912 | (struct bfd_link_info *); |
6404ab99 L |
2913 | extern bfd_size_type _bfd_elf_convert_gnu_property_size |
2914 | (bfd *, bfd *); | |
0a1b45a2 | 2915 | extern bool _bfd_elf_convert_gnu_properties |
6404ab99 | 2916 | (bfd *, asection *, bfd *, bfd_byte **, bfd_size_type *); |
46bed679 | 2917 | |
6061a67d | 2918 | /* The linker may need to keep track of the number of relocs that it |
e03a8ed8 L |
2919 | decides to copy as dynamic relocs in check_relocs for each symbol. |
2920 | This is so that it can later discard them if they are found to be | |
2921 | unnecessary. We can store the information in a field extending the | |
2922 | regular ELF linker hash table. */ | |
2923 | ||
2924 | struct elf_dyn_relocs | |
2925 | { | |
2926 | struct elf_dyn_relocs *next; | |
2927 | ||
2928 | /* The input section of the reloc. */ | |
2929 | asection *sec; | |
2930 | ||
2931 | /* Total number of relocs copied for the input section. */ | |
2932 | bfd_size_type count; | |
2933 | ||
2934 | /* Number of pc-relative relocs copied for the input section. */ | |
2935 | bfd_size_type pc_count; | |
2936 | }; | |
2937 | ||
0a1b45a2 | 2938 | extern bool _bfd_elf_create_ifunc_sections |
3aa14d16 | 2939 | (bfd *, struct bfd_link_info *); |
0a1b45a2 | 2940 | extern bool _bfd_elf_allocate_ifunc_dyn_relocs |
e03a8ed8 | 2941 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
cebd6b8a | 2942 | struct elf_dyn_relocs **, unsigned int, unsigned int, |
0a1b45a2 | 2943 | unsigned int, bool); |
d8045f23 | 2944 | |
351f65ca L |
2945 | extern void elf_append_rela (bfd *, asection *, Elf_Internal_Rela *); |
2946 | extern void elf_append_rel (bfd *, asection *, Elf_Internal_Rela *); | |
2947 | ||
2948 | extern bfd_vma elf64_r_info (bfd_vma, bfd_vma); | |
2949 | extern bfd_vma elf64_r_sym (bfd_vma); | |
2950 | extern bfd_vma elf32_r_info (bfd_vma, bfd_vma); | |
2951 | extern bfd_vma elf32_r_sym (bfd_vma); | |
2952 | ||
0a1b45a2 | 2953 | extern bool is_debuginfo_file (bfd *); |
1faa385f | 2954 | |
a8e14f4c | 2955 | |
0a1b45a2 | 2956 | extern bool _bfd_elf_init_secondary_reloc_section |
a8e14f4c | 2957 | (bfd *, Elf_Internal_Shdr *, const char *, unsigned int); |
0a1b45a2 AM |
2958 | extern bool _bfd_elf_slurp_secondary_reloc_section |
2959 | (bfd *, asection *, asymbol **, bool); | |
2960 | extern bool _bfd_elf_copy_special_section_fields | |
a8e14f4c | 2961 | (const bfd *, bfd *, const Elf_Internal_Shdr *, Elf_Internal_Shdr *); |
0a1b45a2 | 2962 | extern bool _bfd_elf_write_secondary_reloc_section |
a8e14f4c NC |
2963 | (bfd *, asection *); |
2964 | extern unsigned int _bfd_elf_symbol_section_index | |
2965 | (bfd *, elf_symbol_type *); | |
2966 | ||
5dbc8b37 L |
2967 | extern asection *_bfd_elf_readonly_dynrelocs |
2968 | (struct elf_link_hash_entry *); | |
0a1b45a2 | 2969 | extern bool _bfd_elf_maybe_set_textrel |
d49e5065 | 2970 | (struct elf_link_hash_entry *, void *); |
a8e14f4c | 2971 | |
0a1b45a2 AM |
2972 | extern bool _bfd_elf_add_dynamic_tags |
2973 | (bfd *, struct bfd_link_info *, bool); | |
3084d7a2 | 2974 | |
3b22753a L |
2975 | /* Large common section. */ |
2976 | extern asection _bfd_elf_large_com_section; | |
2977 | ||
d2149d72 L |
2978 | /* Hash for local symbol with the first section id, ID, in the input |
2979 | file and the local symbol index, SYM. */ | |
2980 | #define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \ | |
2365f8d7 AM |
2981 | (((((ID) & 0xffU) << 24) | (((ID) & 0xff00) << 8)) \ |
2982 | ^ (SYM) ^ (((ID) & 0xffff0000U) >> 16)) | |
d2149d72 | 2983 | |
c152c796 AM |
2984 | /* This is the condition under which finish_dynamic_symbol will be called. |
2985 | If our finish_dynamic_symbol isn't called, we'll need to do something | |
2986 | about initializing any .plt and .got entries in relocate_section. */ | |
2987 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ | |
2988 | ((DYN) \ | |
f5385ebf AM |
2989 | && ((SHARED) || !(H)->forced_local) \ |
2990 | && ((H)->dynindx != -1 || (H)->forced_local)) | |
c152c796 | 2991 | |
560e09e9 NC |
2992 | /* This macro is to avoid lots of duplicated code in the body |
2993 | of xxx_relocate_section() in the various elfxx-xxxx.c files. */ | |
b2a8e766 AM |
2994 | #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \ |
2995 | r_symndx, symtab_hdr, sym_hashes, \ | |
2996 | h, sec, relocation, \ | |
62d887d4 | 2997 | unresolved_reloc, warned, ignored) \ |
b2a8e766 AM |
2998 | do \ |
2999 | { \ | |
3000 | /* It seems this can happen with erroneous or unsupported \ | |
3001 | input (mixing a.out and elf in an archive, for example.) */ \ | |
3002 | if (sym_hashes == NULL) \ | |
0a1b45a2 | 3003 | return false; \ |
b2a8e766 AM |
3004 | \ |
3005 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \ | |
3006 | \ | |
8a5da09b AM |
3007 | if (info->wrap_hash != NULL \ |
3008 | && (input_section->flags & SEC_DEBUGGING) != 0) \ | |
3009 | h = ((struct elf_link_hash_entry *) \ | |
3010 | unwrap_hash_lookup (info, input_bfd, &h->root)); \ | |
3011 | \ | |
b2a8e766 AM |
3012 | while (h->root.type == bfd_link_hash_indirect \ |
3013 | || h->root.type == bfd_link_hash_warning) \ | |
3014 | h = (struct elf_link_hash_entry *) h->root.u.i.link; \ | |
3015 | \ | |
0a1b45a2 AM |
3016 | warned = false; \ |
3017 | ignored = false; \ | |
3018 | unresolved_reloc = false; \ | |
b2a8e766 AM |
3019 | relocation = 0; \ |
3020 | if (h->root.type == bfd_link_hash_defined \ | |
3021 | || h->root.type == bfd_link_hash_defweak) \ | |
3022 | { \ | |
3023 | sec = h->root.u.def.section; \ | |
3024 | if (sec == NULL \ | |
3025 | || sec->output_section == NULL) \ | |
3026 | /* Set a flag that will be cleared later if we find a \ | |
3027 | relocation value for this symbol. output_section \ | |
3028 | is typically NULL for symbols satisfied by a shared \ | |
3029 | library. */ \ | |
0a1b45a2 | 3030 | unresolved_reloc = true; \ |
b2a8e766 AM |
3031 | else \ |
3032 | relocation = (h->root.u.def.value \ | |
3033 | + sec->output_section->vma \ | |
3034 | + sec->output_offset); \ | |
3035 | } \ | |
3036 | else if (h->root.type == bfd_link_hash_undefweak) \ | |
3037 | ; \ | |
3038 | else if (info->unresolved_syms_in_objects == RM_IGNORE \ | |
3039 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \ | |
0a1b45a2 | 3040 | ignored = true; \ |
0e1862bb | 3041 | else if (!bfd_link_relocatable (info)) \ |
b2a8e766 | 3042 | { \ |
0a1b45a2 AM |
3043 | bool err = ((info->unresolved_syms_in_objects == RM_DIAGNOSE \ |
3044 | && !info->warn_unresolved_syms) \ | |
3045 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT); \ | |
1a72702b AM |
3046 | (*info->callbacks->undefined_symbol) (info, \ |
3047 | h->root.root.string, \ | |
3048 | input_bfd, \ | |
3049 | input_section, \ | |
3050 | rel->r_offset, err); \ | |
0a1b45a2 | 3051 | warned = true; \ |
b2a8e766 | 3052 | } \ |
c7e2358a AM |
3053 | (void) unresolved_reloc; \ |
3054 | (void) warned; \ | |
62d887d4 | 3055 | (void) ignored; \ |
b2a8e766 | 3056 | } \ |
560e09e9 NC |
3057 | while (0) |
3058 | ||
0672748a L |
3059 | /* This macro is to avoid lots of duplicated code in the body of the |
3060 | loop over relocations in xxx_relocate_section() in the various | |
3061 | elfxx-xxxx.c files. | |
23209a78 | 3062 | |
0672748a L |
3063 | Handle relocations against symbols from removed linkonce sections, |
3064 | or sections discarded by a linker script. When doing a relocatable | |
3065 | link, we remove such relocations. Otherwise, we just want the | |
3066 | section contents zeroed and avoid any special processing. */ | |
3067 | #define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \ | |
545fd46b MR |
3068 | rel, count, relend, \ |
3069 | howto, index, contents) \ | |
0672748a | 3070 | { \ |
a134cc9b | 3071 | int i_; \ |
e4067dbb | 3072 | _bfd_clear_contents (howto, input_bfd, input_section, \ |
0930cb30 | 3073 | contents, rel[index].r_offset); \ |
e4067dbb | 3074 | \ |
0e1862bb | 3075 | if (bfd_link_relocatable (info) \ |
0672748a L |
3076 | && (input_section->flags & SEC_DEBUGGING)) \ |
3077 | { \ | |
3078 | /* Only remove relocations in debug sections since other \ | |
3079 | sections may require relocations. */ \ | |
3080 | Elf_Internal_Shdr *rel_hdr; \ | |
3081 | \ | |
d4730f92 | 3082 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \ |
0672748a L |
3083 | \ |
3084 | /* Avoid empty output section. */ \ | |
86f7d49b | 3085 | if (rel_hdr->sh_size > rel_hdr->sh_entsize) \ |
0672748a | 3086 | { \ |
86f7d49b | 3087 | rel_hdr->sh_size -= rel_hdr->sh_entsize; \ |
d4730f92 | 3088 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); \ |
86f7d49b | 3089 | rel_hdr->sh_size -= rel_hdr->sh_entsize; \ |
0672748a | 3090 | \ |
545fd46b MR |
3091 | memmove (rel, rel + count, \ |
3092 | (relend - rel - count) * sizeof (*rel)); \ | |
0672748a | 3093 | \ |
056bafd4 | 3094 | input_section->reloc_count -= count; \ |
545fd46b | 3095 | relend -= count; \ |
0672748a L |
3096 | rel--; \ |
3097 | continue; \ | |
3098 | } \ | |
3099 | } \ | |
3100 | \ | |
a134cc9b | 3101 | for (i_ = 0; i_ < count; i_++) \ |
545fd46b | 3102 | { \ |
a134cc9b HPN |
3103 | rel[i_].r_info = 0; \ |
3104 | rel[i_].r_addend = 0; \ | |
545fd46b MR |
3105 | } \ |
3106 | rel += count - 1; \ | |
0672748a L |
3107 | continue; \ |
3108 | } | |
3109 | ||
a8685210 | 3110 | /* Will a symbol be bound to the definition within the shared |
6f8bcf84 | 3111 | library, if any. A unique symbol can never be bound locally. */ |
55255dae | 3112 | #define SYMBOLIC_BIND(INFO, H) \ |
6f8bcf84 | 3113 | (!(H)->unique_global \ |
487b6440 AM |
3114 | && ((INFO)->symbolic \ |
3115 | || (H)->start_stop \ | |
3116 | || ((INFO)->dynamic && !(H)->dynamic))) | |
55255dae | 3117 | |
1ff6de03 | 3118 | /* Determine if a section contains CTF data, using its name. */ |
0a1b45a2 | 3119 | static inline bool |
1ff6de03 NA |
3120 | bfd_section_is_ctf (const asection *sec) |
3121 | { | |
3122 | const char *name = bfd_section_name (sec); | |
3f3328b8 | 3123 | return startswith (name, ".ctf") && (name[4] == 0 || name[4] == '.'); |
1ff6de03 NA |
3124 | } |
3125 | ||
55172d69 PA |
3126 | #ifdef __cplusplus |
3127 | } | |
3128 | #endif | |
252b5132 | 3129 | #endif /* _LIBELF_H_ */ |