Commit | Line | Data |
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252b5132 | 1 | /* BFD back-end data structures for ELF files. |
2571583a | 2 | Copyright (C) 1992-2017 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 | ||
55172d69 PA |
30 | #ifdef __cplusplus |
31 | extern "C" { | |
32 | #endif | |
33 | ||
d9bc7a44 | 34 | /* The number of entries in a section is its size divided by the size |
51b64d56 | 35 | of a single entry. This is normally only applicable to reloc and |
ce98a316 NC |
36 | symbol table sections. |
37 | PR 9934: It is possible to have relocations that do not refer to | |
38 | symbols, thus it is also possible to have a relocation section in | |
39 | an object file, but no symbol table. */ | |
40 | #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_entsize > 0 ? (shdr)->sh_size / (shdr)->sh_entsize : 0) | |
d9bc7a44 | 41 | |
252b5132 RH |
42 | /* If size isn't specified as 64 or 32, NAME macro should fail. */ |
43 | #ifndef NAME | |
c39a58e6 AM |
44 | #if ARCH_SIZE == 64 |
45 | #define NAME(x, y) x ## 64 ## _ ## y | |
252b5132 | 46 | #endif |
c39a58e6 AM |
47 | #if ARCH_SIZE == 32 |
48 | #define NAME(x, y) x ## 32 ## _ ## y | |
252b5132 RH |
49 | #endif |
50 | #endif | |
51 | ||
52 | #ifndef NAME | |
c39a58e6 | 53 | #define NAME(x, y) x ## NOSIZE ## _ ## y |
252b5132 RH |
54 | #endif |
55 | ||
56 | #define ElfNAME(X) NAME(Elf,X) | |
57 | #define elfNAME(X) NAME(elf,X) | |
58 | ||
59 | /* Information held for an ELF symbol. The first field is the | |
60 | corresponding asymbol. Every symbol is an ELF file is actually a | |
61 | pointer to this structure, although it is often handled as a | |
62 | pointer to an asymbol. */ | |
63 | ||
64 | typedef struct | |
65 | { | |
66 | /* The BFD symbol. */ | |
67 | asymbol symbol; | |
68 | /* ELF symbol information. */ | |
69 | Elf_Internal_Sym internal_elf_sym; | |
70 | /* Backend specific information. */ | |
71 | union | |
72 | { | |
73 | unsigned int hppa_arg_reloc; | |
c39a58e6 AM |
74 | void *mips_extr; |
75 | void *any; | |
252b5132 RH |
76 | } |
77 | tc_data; | |
78 | ||
79 | /* Version information. This is from an Elf_Internal_Versym | |
80 | structure in a SHT_GNU_versym section. It is zero if there is no | |
81 | version information. */ | |
82 | unsigned short version; | |
83 | ||
84 | } elf_symbol_type; | |
85 | \f | |
2b0f7ef9 | 86 | struct elf_strtab_hash; |
5cab59f6 AM |
87 | struct got_entry; |
88 | struct plt_entry; | |
2b0f7ef9 | 89 | |
a50b1753 NC |
90 | union gotplt_union |
91 | { | |
92 | bfd_signed_vma refcount; | |
93 | bfd_vma offset; | |
94 | struct got_entry *glist; | |
95 | struct plt_entry *plist; | |
96 | }; | |
97 | ||
98 | struct elf_link_virtual_table_entry | |
99 | { | |
100 | /* Virtual table entry use information. This array is nominally of size | |
101 | size/sizeof(target_void_pointer), though we have to be able to assume | |
102 | and track a size while the symbol is still undefined. It is indexed | |
103 | via offset/sizeof(target_void_pointer). */ | |
104 | size_t size; | |
105 | bfd_boolean *used; | |
106 | ||
107 | /* Virtual table derivation info. */ | |
108 | struct elf_link_hash_entry *parent; | |
109 | }; | |
110 | ||
422f1182 L |
111 | /* ELF symbol version. */ |
112 | enum elf_symbol_version | |
113 | { | |
114 | unknown = 0, | |
115 | unversioned, | |
116 | versioned, | |
117 | versioned_hidden | |
118 | }; | |
119 | ||
252b5132 RH |
120 | /* ELF linker hash table entries. */ |
121 | ||
122 | struct elf_link_hash_entry | |
123 | { | |
124 | struct bfd_link_hash_entry root; | |
125 | ||
126 | /* Symbol index in output file. This is initialized to -1. It is | |
97196564 L |
127 | set to -2 if the symbol is used by a reloc. It is set to -3 if |
128 | this symbol is defined in a discarded section. */ | |
252b5132 RH |
129 | long indx; |
130 | ||
252b5132 RH |
131 | /* Symbol index as a dynamic symbol. Initialized to -1, and remains |
132 | -1 if this is not a dynamic symbol. */ | |
30b30c21 RH |
133 | /* ??? Note that this is consistently used as a synonym for tests |
134 | against whether we can perform various simplifying transformations | |
135 | to the code. (E.g. changing a pc-relative jump to a PLT entry | |
136 | into a pc-relative jump to the target function.) That test, which | |
137 | is often relatively complex, and someplaces wrong or incomplete, | |
138 | should really be replaced by a predicate in elflink.c. | |
139 | ||
140 | End result: this field -1 does not indicate that the symbol is | |
141 | not in the dynamic symbol table, but rather that the symbol is | |
142 | not visible outside this DSO. */ | |
252b5132 RH |
143 | long dynindx; |
144 | ||
a90b9fca AM |
145 | /* If this symbol requires an entry in the global offset table, the |
146 | processor specific backend uses this field to track usage and | |
5cab59f6 AM |
147 | final offset. Two schemes are supported: The first assumes that |
148 | a symbol may only have one GOT entry, and uses REFCOUNT until | |
149 | size_dynamic_sections, at which point the contents of the .got is | |
150 | fixed. Afterward, if OFFSET is -1, then the symbol does not | |
151 | require a global offset table entry. The second scheme allows | |
152 | multiple GOT entries per symbol, managed via a linked list | |
153 | pointed to by GLIST. */ | |
a50b1753 | 154 | union gotplt_union got; |
a90b9fca AM |
155 | |
156 | /* Same, but tracks a procedure linkage table entry. */ | |
5cab59f6 | 157 | union gotplt_union plt; |
a90b9fca AM |
158 | |
159 | /* Symbol size. */ | |
160 | bfd_size_type size; | |
161 | ||
252b5132 | 162 | /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */ |
f5385ebf | 163 | unsigned int type : 8; |
252b5132 | 164 | |
9b234ee9 | 165 | /* Symbol st_other value, symbol visibility. */ |
f5385ebf | 166 | unsigned int other : 8; |
252b5132 | 167 | |
35fc36a8 RS |
168 | /* The symbol's st_target_internal value (see Elf_Internal_Sym). */ |
169 | unsigned int target_internal : 8; | |
170 | ||
7ae26bc1 AM |
171 | /* Symbol is referenced by a non-shared object (other than the object |
172 | in which it is defined). */ | |
f5385ebf | 173 | unsigned int ref_regular : 1; |
252b5132 | 174 | /* Symbol is defined by a non-shared object. */ |
f5385ebf | 175 | unsigned int def_regular : 1; |
252b5132 | 176 | /* Symbol is referenced by a shared object. */ |
f5385ebf | 177 | unsigned int ref_dynamic : 1; |
252b5132 | 178 | /* Symbol is defined by a shared object. */ |
f5385ebf | 179 | unsigned int def_dynamic : 1; |
7ae26bc1 AM |
180 | /* Symbol has a non-weak reference from a non-shared object (other than |
181 | the object in which it is defined). */ | |
f5385ebf | 182 | unsigned int ref_regular_nonweak : 1; |
252b5132 | 183 | /* Dynamic symbol has been adjustd. */ |
f5385ebf | 184 | unsigned int dynamic_adjusted : 1; |
252b5132 | 185 | /* Symbol needs a copy reloc. */ |
f5385ebf | 186 | unsigned int needs_copy : 1; |
252b5132 | 187 | /* Symbol needs a procedure linkage table entry. */ |
f5385ebf | 188 | unsigned int needs_plt : 1; |
252b5132 | 189 | /* Symbol appears in a non-ELF input file. */ |
f5385ebf | 190 | unsigned int non_elf : 1; |
422f1182 L |
191 | /* Symbol version information. */ |
192 | ENUM_BITFIELD (elf_symbol_version) versioned : 2; | |
252b5132 | 193 | /* Symbol was forced to local scope due to a version script file. */ |
f5385ebf | 194 | unsigned int forced_local : 1; |
55255dae L |
195 | /* Symbol was forced to be dynamic due to a version script file. */ |
196 | unsigned int dynamic : 1; | |
252b5132 | 197 | /* Symbol was marked during garbage collection. */ |
f5385ebf | 198 | unsigned int mark : 1; |
7843f00e ILT |
199 | /* Symbol is referenced by a non-GOT/non-PLT relocation. This is |
200 | not currently set by all the backends. */ | |
f5385ebf | 201 | unsigned int non_got_ref : 1; |
f6e332e6 AM |
202 | /* Symbol has a definition in a shared object. |
203 | FIXME: There is no real need for this field if def_dynamic is never | |
204 | cleared and all places that test def_dynamic also test def_regular. */ | |
f5385ebf | 205 | unsigned int dynamic_def : 1; |
ee659f1f AM |
206 | /* Symbol has a non-weak reference from a shared object. */ |
207 | unsigned int ref_dynamic_nonweak : 1; | |
c6585bbb JJ |
208 | /* Symbol is referenced with a relocation where C/C++ pointer equality |
209 | matters. */ | |
f5385ebf | 210 | unsigned int pointer_equality_needed : 1; |
3e7a7d11 NC |
211 | /* Symbol is a unique global symbol. */ |
212 | unsigned int unique_global : 1; | |
b8417128 AM |
213 | /* Symbol is defined by a shared library with non-default visibility |
214 | in a read/write section. */ | |
6cabe1ea | 215 | unsigned int protected_def : 1; |
cbd0eecf L |
216 | /* Symbol is __start_SECNAME or __stop_SECNAME to mark section |
217 | SECNAME. */ | |
218 | unsigned int start_stop : 1; | |
f6e332e6 AM |
219 | |
220 | /* String table index in .dynstr if this is a dynamic symbol. */ | |
221 | unsigned long dynstr_index; | |
222 | ||
223 | union | |
224 | { | |
225 | /* If this is a weak defined symbol from a dynamic object, this | |
226 | field points to a defined symbol with the same value, if there is | |
227 | one. Otherwise it is NULL. */ | |
228 | struct elf_link_hash_entry *weakdef; | |
229 | ||
230 | /* Hash value of the name computed using the ELF hash function. | |
231 | Used part way through size_dynamic_sections, after we've finished | |
232 | with weakdefs. */ | |
233 | unsigned long elf_hash_value; | |
234 | } u; | |
235 | ||
236 | /* Version information. */ | |
237 | union | |
238 | { | |
239 | /* This field is used for a symbol which is not defined in a | |
240 | regular object. It points to the version information read in | |
241 | from the dynamic object. */ | |
242 | Elf_Internal_Verdef *verdef; | |
243 | /* This field is used for a symbol which is defined in a regular | |
244 | object. It is set up in size_dynamic_sections. It points to | |
245 | the version information we should write out for this symbol. */ | |
246 | struct bfd_elf_version_tree *vertree; | |
247 | } verinfo; | |
248 | ||
cbd0eecf L |
249 | union |
250 | { | |
251 | /* For __start_SECNAME and __stop_SECNAME symbols, record the first | |
252 | input section whose section name is SECNAME. */ | |
253 | asection *start_stop_section; | |
254 | ||
255 | /* Vtable information. */ | |
256 | struct elf_link_virtual_table_entry *vtable; | |
257 | } u2; | |
252b5132 RH |
258 | }; |
259 | ||
586119b3 | 260 | /* Will references to this symbol always reference the symbol |
2676a7d9 | 261 | in this object? */ |
986a241f | 262 | #define SYMBOL_REFERENCES_LOCAL(INFO, H) \ |
f6c52c13 | 263 | _bfd_elf_symbol_refs_local_p (H, INFO, 0) |
586119b3 AM |
264 | |
265 | /* Will _calls_ to this symbol always call the version in this object? */ | |
986a241f | 266 | #define SYMBOL_CALLS_LOCAL(INFO, H) \ |
f6c52c13 | 267 | _bfd_elf_symbol_refs_local_p (H, INFO, 1) |
586119b3 | 268 | |
7e2294f9 | 269 | /* Common symbols that are turned into definitions don't have the |
c4621b33 AM |
270 | DEF_REGULAR flag set, so they might appear to be undefined. |
271 | Symbols defined in linker scripts also don't have DEF_REGULAR set. */ | |
7e2294f9 | 272 | #define ELF_COMMON_DEF_P(H) \ |
f5385ebf AM |
273 | (!(H)->def_regular \ |
274 | && !(H)->def_dynamic \ | |
7e2294f9 AO |
275 | && (H)->root.type == bfd_link_hash_defined) |
276 | ||
30b30c21 RH |
277 | /* Records local symbols to be emitted in the dynamic symbol table. */ |
278 | ||
279 | struct elf_link_local_dynamic_entry | |
280 | { | |
281 | struct elf_link_local_dynamic_entry *next; | |
282 | ||
283 | /* The input bfd this symbol came from. */ | |
284 | bfd *input_bfd; | |
285 | ||
286 | /* The index of the local symbol being copied. */ | |
287 | long input_indx; | |
288 | ||
289 | /* The index in the outgoing dynamic symbol table. */ | |
290 | long dynindx; | |
3e932841 | 291 | |
30b30c21 RH |
292 | /* A copy of the input symbol. */ |
293 | Elf_Internal_Sym isym; | |
294 | }; | |
295 | ||
f5d44ba0 AM |
296 | struct elf_link_loaded_list |
297 | { | |
298 | struct elf_link_loaded_list *next; | |
299 | bfd *abfd; | |
300 | }; | |
301 | ||
126495ed | 302 | /* Structures used by the eh_frame optimization code. */ |
126495ed AM |
303 | struct eh_cie_fde |
304 | { | |
155eaaa0 RS |
305 | union { |
306 | struct { | |
ca92cecb RS |
307 | /* If REMOVED == 1, this is the CIE that the FDE originally used. |
308 | The CIE belongs to the same .eh_frame input section as the FDE. | |
309 | ||
310 | If REMOVED == 0, this is the CIE that we have chosen to use for | |
311 | the output FDE. The CIE's REMOVED field is also 0, but the CIE | |
c2aaac08 AM |
312 | might belong to a different .eh_frame input section from the FDE. |
313 | ||
314 | May be NULL to signify that the FDE should be discarded. */ | |
155eaaa0 | 315 | struct eh_cie_fde *cie_inf; |
9d0a14d3 | 316 | struct eh_cie_fde *next_for_section; |
155eaaa0 | 317 | } fde; |
ca92cecb | 318 | struct { |
184d07da | 319 | /* CIEs have three states: |
fc802241 | 320 | |
184d07da RS |
321 | - REMOVED && !MERGED: Slated for removal because we haven't yet |
322 | proven that an FDE needs it. FULL_CIE, if nonnull, points to | |
323 | more detailed information about the CIE. | |
fc802241 | 324 | |
184d07da RS |
325 | - REMOVED && MERGED: We have merged this CIE with MERGED_WITH, |
326 | which may not belong to the same input section. | |
327 | ||
328 | - !REMOVED: We have decided to keep this CIE. SEC is the | |
329 | .eh_frame input section that contains the CIE. */ | |
fc802241 | 330 | union { |
184d07da RS |
331 | struct cie *full_cie; |
332 | struct eh_cie_fde *merged_with; | |
fc802241 RS |
333 | asection *sec; |
334 | } u; | |
9d0a14d3 | 335 | |
18e04883 RS |
336 | /* The offset of the personality data from the start of the CIE, |
337 | or 0 if the CIE doesn't have any. */ | |
338 | unsigned int personality_offset : 8; | |
339 | ||
d7153c4a AM |
340 | /* Length of augmentation. aug_str_len is the length of the |
341 | string including null terminator. aug_data_len is the length | |
342 | of the rest up to the initial insns. */ | |
343 | unsigned int aug_str_len : 3; | |
344 | unsigned int aug_data_len : 5; | |
345 | ||
9d0a14d3 RS |
346 | /* True if we have marked relocations associated with this CIE. */ |
347 | unsigned int gc_mark : 1; | |
9f4b847e RS |
348 | |
349 | /* True if we have decided to turn an absolute LSDA encoding into | |
184d07da | 350 | a PC-relative one. */ |
9f4b847e | 351 | unsigned int make_lsda_relative : 1; |
6b2cc140 | 352 | |
18e04883 RS |
353 | /* True if we have decided to turn an absolute personality |
354 | encoding into a PC-relative one. */ | |
355 | unsigned int make_per_encoding_relative : 1; | |
356 | ||
357 | /* True if the CIE contains personality data and if that | |
358 | data uses a PC-relative encoding. Always true when | |
359 | make_per_encoding_relative is. */ | |
6b2cc140 RS |
360 | unsigned int per_encoding_relative : 1; |
361 | ||
2e0ce1c8 AM |
362 | /* True if the CIE contains personality data aligned to a |
363 | multiple of eight bytes. */ | |
364 | unsigned int per_encoding_aligned8 : 1; | |
365 | ||
6b2cc140 RS |
366 | /* True if we need to add an 'R' (FDE encoding) entry to the |
367 | CIE's augmentation data. */ | |
368 | unsigned int add_fde_encoding : 1; | |
184d07da RS |
369 | |
370 | /* True if we have merged this CIE with another. */ | |
371 | unsigned int merged : 1; | |
18e04883 RS |
372 | |
373 | /* Unused bits. */ | |
d7153c4a | 374 | unsigned int pad1 : 9; |
ca92cecb | 375 | } cie; |
155eaaa0 RS |
376 | } u; |
377 | unsigned int reloc_index; | |
126495ed | 378 | unsigned int size; |
fda3ecf2 | 379 | unsigned int offset; |
126495ed | 380 | unsigned int new_offset; |
155eaaa0 RS |
381 | unsigned int fde_encoding : 8; |
382 | unsigned int lsda_encoding : 8; | |
383 | unsigned int lsda_offset : 8; | |
6b2cc140 RS |
384 | |
385 | /* True if this entry represents a CIE, false if it represents an FDE. */ | |
822392ce | 386 | unsigned int cie : 1; |
6b2cc140 RS |
387 | |
388 | /* True if this entry is currently marked for removal. */ | |
822392ce | 389 | unsigned int removed : 1; |
6b2cc140 RS |
390 | |
391 | /* True if we need to add a 'z' (augmentation size) entry to the CIE's | |
392 | augmentation data, and an associated byte to each of the CIE's FDEs. */ | |
353057a5 | 393 | unsigned int add_augmentation_size : 1; |
6b2cc140 RS |
394 | |
395 | /* True if we have decided to convert absolute FDE relocations into | |
396 | relative ones. This applies to the first relocation in the FDE, | |
397 | which is against the code that the FDE describes. */ | |
822392ce | 398 | unsigned int make_relative : 1; |
6b2cc140 RS |
399 | |
400 | /* Unused bits. */ | |
401 | unsigned int pad1 : 4; | |
402 | ||
ac685e6a | 403 | unsigned int *set_loc; |
126495ed AM |
404 | }; |
405 | ||
406 | struct eh_frame_sec_info | |
407 | { | |
408 | unsigned int count; | |
184d07da | 409 | struct cie *cies; |
126495ed AM |
410 | struct eh_cie_fde entry[1]; |
411 | }; | |
412 | ||
413 | struct eh_frame_array_ent | |
414 | { | |
415 | bfd_vma initial_loc; | |
ae6c7e33 | 416 | bfd_size_type range; |
126495ed AM |
417 | bfd_vma fde; |
418 | }; | |
419 | ||
bce613b9 JJ |
420 | struct htab; |
421 | ||
2f0c68f2 CM |
422 | #define DWARF2_EH_HDR 1 |
423 | #define COMPACT_EH_HDR 2 | |
424 | ||
425 | /* Endian-neutral code indicating that a function cannot be unwound. */ | |
426 | #define COMPACT_EH_CANT_UNWIND_OPCODE 0x015d5d01 | |
427 | ||
428 | struct dwarf_eh_frame_hdr_info | |
126495ed | 429 | { |
bce613b9 | 430 | struct htab *cies; |
2f0c68f2 | 431 | unsigned int fde_count; |
126495ed AM |
432 | /* TRUE if .eh_frame_hdr should contain the sorted search table. |
433 | We build it if we successfully read all .eh_frame input sections | |
434 | and recognize them. */ | |
b34976b6 | 435 | bfd_boolean table; |
2f0c68f2 CM |
436 | struct eh_frame_array_ent *array; |
437 | }; | |
438 | ||
439 | struct compact_eh_frame_hdr_info | |
440 | { | |
441 | unsigned int allocated_entries; | |
442 | /* eh_frame_entry fragments. */ | |
443 | asection **entries; | |
444 | }; | |
445 | ||
446 | struct eh_frame_hdr_info | |
447 | { | |
448 | asection *hdr_sec; | |
449 | unsigned int array_count; | |
450 | bfd_boolean frame_hdr_is_compact; | |
451 | union | |
452 | { | |
453 | struct dwarf_eh_frame_hdr_info dwarf; | |
454 | struct compact_eh_frame_hdr_info compact; | |
455 | } | |
456 | u; | |
126495ed AM |
457 | }; |
458 | ||
4dfe6ac6 NC |
459 | /* Enum used to identify target specific extensions to the elf_obj_tdata |
460 | and elf_link_hash_table structures. Note the enums deliberately start | |
461 | from 1 so that we can detect an uninitialized field. The generic value | |
462 | is last so that additions to this enum do not need to modify more than | |
463 | one line. */ | |
464 | enum elf_target_id | |
465 | { | |
a06ea964 NC |
466 | AARCH64_ELF_DATA = 1, |
467 | ALPHA_ELF_DATA, | |
8a36df4d | 468 | ARC_ELF_DATA, |
4dfe6ac6 NC |
469 | ARM_ELF_DATA, |
470 | AVR_ELF_DATA, | |
471 | BFIN_ELF_DATA, | |
472 | CRIS_ELF_DATA, | |
473 | FRV_ELF_DATA, | |
474 | HPPA32_ELF_DATA, | |
475 | HPPA64_ELF_DATA, | |
476 | I386_ELF_DATA, | |
477 | IA64_ELF_DATA, | |
478 | LM32_ELF_DATA, | |
479 | M32R_ELF_DATA, | |
480 | M68HC11_ELF_DATA, | |
481 | M68K_ELF_DATA, | |
a3c62988 | 482 | METAG_ELF_DATA, |
4dfe6ac6 NC |
483 | MICROBLAZE_ELF_DATA, |
484 | MIPS_ELF_DATA, | |
485 | MN10300_ELF_DATA, | |
35c08157 | 486 | NDS32_ELF_DATA, |
36591ba1 | 487 | NIOS2_ELF_DATA, |
73589c9d | 488 | OR1K_ELF_DATA, |
4dfe6ac6 NC |
489 | PPC32_ELF_DATA, |
490 | PPC64_ELF_DATA, | |
889294f6 | 491 | PRU_ELF_DATA, |
4dfe6ac6 NC |
492 | S390_ELF_DATA, |
493 | SH_ELF_DATA, | |
494 | SPARC_ELF_DATA, | |
495 | SPU_ELF_DATA, | |
41820509 | 496 | TIC6X_ELF_DATA, |
4dfe6ac6 NC |
497 | X86_64_ELF_DATA, |
498 | XTENSA_ELF_DATA, | |
f6c1a2d5 | 499 | XGATE_ELF_DATA, |
aa137e4d NC |
500 | TILEGX_ELF_DATA, |
501 | TILEPRO_ELF_DATA, | |
e23eba97 | 502 | RISCV_ELF_DATA, |
4dfe6ac6 NC |
503 | GENERIC_ELF_DATA |
504 | }; | |
505 | ||
ef10c3ac L |
506 | struct elf_sym_strtab |
507 | { | |
508 | Elf_Internal_Sym sym; | |
509 | unsigned long dest_index; | |
510 | unsigned long destshndx_index; | |
511 | }; | |
512 | ||
252b5132 RH |
513 | /* ELF linker hash table. */ |
514 | ||
515 | struct elf_link_hash_table | |
516 | { | |
517 | struct bfd_link_hash_table root; | |
51b64d56 | 518 | |
4dfe6ac6 NC |
519 | /* An identifier used to distinguish different target |
520 | specific extensions to this structure. */ | |
521 | enum elf_target_id hash_table_id; | |
522 | ||
252b5132 RH |
523 | /* Whether we have created the special dynamic sections required |
524 | when linking against or generating a shared object. */ | |
b34976b6 | 525 | bfd_boolean dynamic_sections_created; |
51b64d56 | 526 | |
74541ad4 AM |
527 | /* True if this target has relocatable executables, so needs dynamic |
528 | section symbols. */ | |
529 | bfd_boolean is_relocatable_executable; | |
530 | ||
252b5132 RH |
531 | /* The BFD used to hold special sections created by the linker. |
532 | This will be the first BFD found which requires these sections to | |
533 | be created. */ | |
534 | bfd *dynobj; | |
51b64d56 AM |
535 | |
536 | /* The value to use when initialising got.refcount/offset and | |
537 | plt.refcount/offset in an elf_link_hash_entry. Set to zero when | |
a6aa5195 AM |
538 | the values are refcounts. Set to init_got_offset/init_plt_offset |
539 | in size_dynamic_sections when the values may be offsets. */ | |
540 | union gotplt_union init_got_refcount; | |
541 | union gotplt_union init_plt_refcount; | |
5cab59f6 AM |
542 | |
543 | /* The value to use for got.refcount/offset and plt.refcount/offset | |
544 | when the values may be offsets. Normally (bfd_vma) -1. */ | |
a6aa5195 AM |
545 | union gotplt_union init_got_offset; |
546 | union gotplt_union init_plt_offset; | |
51b64d56 | 547 | |
d5486c43 L |
548 | /* The number of symbols found in the link which is intended for the |
549 | mandatory DT_SYMTAB tag (.dynsym section) in .dynamic section. */ | |
252b5132 | 550 | bfd_size_type dynsymcount; |
90ac2420 | 551 | bfd_size_type local_dynsymcount; |
51b64d56 | 552 | |
252b5132 RH |
553 | /* The string table of dynamic symbols, which becomes the .dynstr |
554 | section. */ | |
2b0f7ef9 | 555 | struct elf_strtab_hash *dynstr; |
51b64d56 | 556 | |
ef10c3ac L |
557 | /* The number of symbol strings found in the link which must be put |
558 | into the .strtab section. */ | |
559 | bfd_size_type strtabcount; | |
560 | ||
561 | /* The array size of the symbol string table, which becomes the | |
562 | .strtab section. */ | |
563 | bfd_size_type strtabsize; | |
564 | ||
565 | /* The array of strings, which becomes the .strtab section. */ | |
566 | struct elf_sym_strtab *strtab; | |
567 | ||
252b5132 RH |
568 | /* The number of buckets in the hash table in the .hash section. |
569 | This is based on the number of dynamic symbols. */ | |
570 | bfd_size_type bucketcount; | |
51b64d56 | 571 | |
252b5132 RH |
572 | /* A linked list of DT_NEEDED names found in dynamic objects |
573 | included in the link. */ | |
574 | struct bfd_link_needed_list *needed; | |
51b64d56 | 575 | |
74541ad4 AM |
576 | /* Sections in the output bfd that provides a section symbol |
577 | to be used by relocations emitted against local symbols. | |
578 | Most targets will not use data_index_section. */ | |
579 | asection *text_index_section; | |
580 | asection *data_index_section; | |
581 | ||
252b5132 RH |
582 | /* The _GLOBAL_OFFSET_TABLE_ symbol. */ |
583 | struct elf_link_hash_entry *hgot; | |
51b64d56 | 584 | |
7325306f RS |
585 | /* The _PROCEDURE_LINKAGE_TABLE_ symbol. */ |
586 | struct elf_link_hash_entry *hplt; | |
587 | ||
9637f6ef L |
588 | /* The _DYNAMIC symbol. */ |
589 | struct elf_link_hash_entry *hdynamic; | |
590 | ||
f5fa8ca2 | 591 | /* A pointer to information used to merge SEC_MERGE sections. */ |
c39a58e6 | 592 | void *merge_info; |
51b64d56 | 593 | |
3722b82f AM |
594 | /* Used to link stabs in sections. */ |
595 | struct stab_info stab_info; | |
596 | ||
126495ed AM |
597 | /* Used by eh_frame code when editing .eh_frame. */ |
598 | struct eh_frame_hdr_info eh_info; | |
599 | ||
30b30c21 RH |
600 | /* A linked list of local symbols to be added to .dynsym. */ |
601 | struct elf_link_local_dynamic_entry *dynlocal; | |
51b64d56 | 602 | |
a963dc6a L |
603 | /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic |
604 | objects included in the link. */ | |
605 | struct bfd_link_needed_list *runpath; | |
13ae64f3 | 606 | |
e1918d23 AM |
607 | /* Cached first output tls section and size of PT_TLS segment. */ |
608 | asection *tls_sec; | |
609 | bfd_size_type tls_size; | |
f5d44ba0 AM |
610 | |
611 | /* A linked list of BFD's loaded in the link. */ | |
612 | struct elf_link_loaded_list *loaded; | |
6de2ae4a L |
613 | |
614 | /* Short-cuts to get to dynamic linker sections. */ | |
615 | asection *sgot; | |
616 | asection *sgotplt; | |
617 | asection *srelgot; | |
618 | asection *splt; | |
619 | asection *srelplt; | |
9d19e4fd AM |
620 | asection *sdynbss; |
621 | asection *srelbss; | |
5474d94f AM |
622 | asection *sdynrelro; |
623 | asection *sreldynrelro; | |
6de2ae4a L |
624 | asection *igotplt; |
625 | asection *iplt; | |
626 | asection *irelplt; | |
627 | asection *irelifunc; | |
cae1fbbb | 628 | asection *dynsym; |
252b5132 RH |
629 | }; |
630 | ||
631 | /* Look up an entry in an ELF linker hash table. */ | |
632 | ||
633 | #define elf_link_hash_lookup(table, string, create, copy, follow) \ | |
634 | ((struct elf_link_hash_entry *) \ | |
635 | bfd_link_hash_lookup (&(table)->root, (string), (create), \ | |
636 | (copy), (follow))) | |
637 | ||
638 | /* Traverse an ELF linker hash table. */ | |
639 | ||
640 | #define elf_link_hash_traverse(table, func, info) \ | |
641 | (bfd_link_hash_traverse \ | |
642 | (&(table)->root, \ | |
c39a58e6 | 643 | (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
644 | (info))) |
645 | ||
646 | /* Get the ELF linker hash table from a link_info structure. */ | |
647 | ||
648 | #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash)) | |
8ea2e4bd | 649 | |
4dfe6ac6 NC |
650 | #define elf_hash_table_id(table) ((table) -> hash_table_id) |
651 | ||
b34976b6 | 652 | /* Returns TRUE if the hash table is a struct elf_link_hash_table. */ |
0eddce27 AM |
653 | #define is_elf_hash_table(htab) \ |
654 | (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table) | |
ec338859 | 655 | |
87d72d41 AM |
656 | /* Used by bfd_sym_from_r_symndx to cache a small number of local |
657 | symbols. */ | |
ec338859 | 658 | #define LOCAL_SYM_CACHE_SIZE 32 |
87d72d41 | 659 | struct sym_cache |
ec338859 AM |
660 | { |
661 | bfd *abfd; | |
662 | unsigned long indx[LOCAL_SYM_CACHE_SIZE]; | |
87d72d41 | 663 | Elf_Internal_Sym sym[LOCAL_SYM_CACHE_SIZE]; |
ec338859 | 664 | }; |
252b5132 RH |
665 | \f |
666 | /* Constant information held for an ELF backend. */ | |
667 | ||
668 | struct elf_size_info { | |
669 | unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr; | |
670 | unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note; | |
671 | ||
c7ac6ff8 MM |
672 | /* The size of entries in the .hash section. */ |
673 | unsigned char sizeof_hash_entry; | |
674 | ||
675 | /* The number of internal relocations to allocate per external | |
676 | relocation entry. */ | |
677 | unsigned char int_rels_per_ext_rel; | |
947216bf AM |
678 | /* We use some fixed size arrays. This should be large enough to |
679 | handle all back-ends. */ | |
680 | #define MAX_INT_RELS_PER_EXT_REL 3 | |
c7ac6ff8 | 681 | |
45d6a902 | 682 | unsigned char arch_size, log_file_align; |
252b5132 | 683 | unsigned char elfclass, ev_current; |
dc810e39 | 684 | int (*write_out_phdrs) |
c39a58e6 AM |
685 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
686 | bfd_boolean | |
687 | (*write_shdrs_and_ehdr) (bfd *); | |
20a761b5 RM |
688 | bfd_boolean (*checksum_contents) |
689 | (bfd * , void (*) (const void *, size_t, void *), void *); | |
dc810e39 | 690 | void (*write_relocs) |
c39a58e6 | 691 | (bfd *, asection *, void *); |
8384fb8f | 692 | bfd_boolean (*swap_symbol_in) |
c39a58e6 | 693 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
dc810e39 | 694 | void (*swap_symbol_out) |
c39a58e6 | 695 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
b34976b6 | 696 | bfd_boolean (*slurp_reloc_table) |
c39a58e6 | 697 | (bfd *, asection *, asymbol **, bfd_boolean); |
dc810e39 | 698 | long (*slurp_symbol_table) |
c39a58e6 | 699 | (bfd *, asymbol **, bfd_boolean); |
dc810e39 | 700 | void (*swap_dyn_in) |
c39a58e6 | 701 | (bfd *, const void *, Elf_Internal_Dyn *); |
dc810e39 | 702 | void (*swap_dyn_out) |
c39a58e6 | 703 | (bfd *, const Elf_Internal_Dyn *, void *); |
c7ac6ff8 | 704 | |
947216bf AM |
705 | /* This function is called to swap in a REL relocation. If an |
706 | external relocation corresponds to more than one internal | |
707 | relocation, then all relocations are swapped in at once. */ | |
c7ac6ff8 | 708 | void (*swap_reloc_in) |
c39a58e6 | 709 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
c7ac6ff8 | 710 | |
947216bf | 711 | /* This function is called to swap out a REL relocation. */ |
c7ac6ff8 | 712 | void (*swap_reloc_out) |
c39a58e6 | 713 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
c7ac6ff8 | 714 | |
947216bf AM |
715 | /* This function is called to swap in a RELA relocation. If an |
716 | external relocation corresponds to more than one internal | |
717 | relocation, then all relocations are swapped in at once. */ | |
c7ac6ff8 | 718 | void (*swap_reloca_in) |
c39a58e6 | 719 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
c7ac6ff8 | 720 | |
947216bf | 721 | /* This function is called to swap out a RELA relocation. */ |
c7ac6ff8 | 722 | void (*swap_reloca_out) |
c39a58e6 | 723 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 RH |
724 | }; |
725 | ||
726 | #define elf_symbol_from(ABFD,S) \ | |
727 | (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \ | |
728 | && (S)->the_bfd->tdata.elf_obj_data != 0) \ | |
729 | ? (elf_symbol_type *) (S) \ | |
730 | : 0) | |
731 | ||
db6751f2 JJ |
732 | enum elf_reloc_type_class { |
733 | reloc_class_normal, | |
734 | reloc_class_relative, | |
7e612e98 | 735 | reloc_class_copy, |
1997c994 AM |
736 | reloc_class_ifunc, |
737 | reloc_class_plt | |
db6751f2 JJ |
738 | }; |
739 | ||
73d074b4 DJ |
740 | struct elf_reloc_cookie |
741 | { | |
742 | Elf_Internal_Rela *rels, *rel, *relend; | |
6cdc0ccc | 743 | Elf_Internal_Sym *locsyms; |
73d074b4 DJ |
744 | bfd *abfd; |
745 | size_t locsymcount; | |
746 | size_t extsymoff; | |
747 | struct elf_link_hash_entry **sym_hashes; | |
140f6c8e | 748 | int r_sym_shift; |
b34976b6 | 749 | bfd_boolean bad_symtab; |
73d074b4 DJ |
750 | }; |
751 | ||
c6e90b02 TS |
752 | /* The level of IRIX compatibility we're striving for. */ |
753 | ||
754 | typedef enum { | |
755 | ict_none, | |
756 | ict_irix5, | |
757 | ict_irix6 | |
758 | } irix_compat_t; | |
759 | ||
2f89ff8d L |
760 | /* Mapping of ELF section names and types. */ |
761 | struct bfd_elf_special_section | |
762 | { | |
763 | const char *prefix; | |
9fb71ee4 | 764 | unsigned int prefix_length; |
7dcb9820 AM |
765 | /* 0 means name must match PREFIX exactly. |
766 | -1 means name must start with PREFIX followed by an arbitrary string. | |
767 | -2 means name must match PREFIX exactly or consist of PREFIX followed | |
768 | by a dot then anything. | |
769 | > 0 means name must start with the first PREFIX_LENGTH chars of | |
770 | PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */ | |
9fb71ee4 NC |
771 | signed int suffix_length; |
772 | unsigned int type; | |
01e1a5bc | 773 | bfd_vma attr; |
2f89ff8d L |
774 | }; |
775 | ||
8a696751 AM |
776 | enum action_discarded |
777 | { | |
778 | COMPLAIN = 1, | |
779 | PRETEND = 2 | |
780 | }; | |
781 | ||
6a5bb875 PB |
782 | typedef asection * (*elf_gc_mark_hook_fn) |
783 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | |
784 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
785 | ||
46bed679 L |
786 | enum elf_property_kind |
787 | { | |
788 | /* A new property. */ | |
789 | property_unknown = 0, | |
790 | /* A property ignored by backend. */ | |
791 | property_ignored, | |
792 | /* A corrupt property reported by backend. */ | |
793 | property_corrupt, | |
794 | /* A property should be removed due to property merge. */ | |
795 | property_remove, | |
796 | /* A property which is a number. */ | |
797 | property_number | |
798 | }; | |
799 | ||
800 | typedef struct elf_property | |
801 | { | |
802 | unsigned int pr_type; | |
803 | unsigned int pr_datasz; | |
804 | union | |
805 | { | |
806 | /* For property_number, this is a number. */ | |
807 | bfd_vma number; | |
808 | /* Add a new one if elf_property_kind is updated. */ | |
809 | } u; | |
810 | enum elf_property_kind pr_kind; | |
811 | } elf_property; | |
812 | ||
813 | typedef struct elf_property_list | |
814 | { | |
815 | struct elf_property_list *next; | |
816 | struct elf_property property; | |
817 | } elf_property_list; | |
818 | ||
9eaff861 AO |
819 | struct bfd_elf_section_reloc_data; |
820 | ||
252b5132 RH |
821 | struct elf_backend_data |
822 | { | |
252b5132 RH |
823 | /* The architecture for this backend. */ |
824 | enum bfd_architecture arch; | |
825 | ||
ae95ffa6 L |
826 | /* An identifier used to distinguish different target specific |
827 | extensions to elf_obj_tdata and elf_link_hash_table structures. */ | |
828 | enum elf_target_id target_id; | |
829 | ||
252b5132 RH |
830 | /* The ELF machine code (EM_xxxx) for this backend. */ |
831 | int elf_machine_code; | |
832 | ||
9eaff861 | 833 | /* EI_OSABI. */ |
d1036acb L |
834 | int elf_osabi; |
835 | ||
252b5132 RH |
836 | /* The maximum page size for this backend. */ |
837 | bfd_vma maxpagesize; | |
838 | ||
b1342370 DJ |
839 | /* The minimum page size for this backend. An input object will not be |
840 | considered page aligned unless its sections are correctly aligned for | |
841 | pages at least this large. May be smaller than maxpagesize. */ | |
842 | bfd_vma minpagesize; | |
843 | ||
24718e3b L |
844 | /* The common page size for this backend. */ |
845 | bfd_vma commonpagesize; | |
846 | ||
e5a52504 MM |
847 | /* The BFD flags applied to sections created for dynamic linking. */ |
848 | flagword dynamic_sec_flags; | |
849 | ||
23209a78 RM |
850 | /* Architecture-specific data for this backend. |
851 | This is actually a pointer to some type like struct elf_ARCH_data. */ | |
852 | const void *arch_data; | |
853 | ||
252b5132 RH |
854 | /* A function to translate an ELF RELA relocation to a BFD arelent |
855 | structure. */ | |
dc810e39 | 856 | void (*elf_info_to_howto) |
c39a58e6 | 857 | (bfd *, arelent *, Elf_Internal_Rela *); |
252b5132 RH |
858 | |
859 | /* A function to translate an ELF REL relocation to a BFD arelent | |
860 | structure. */ | |
dc810e39 | 861 | void (*elf_info_to_howto_rel) |
c39a58e6 | 862 | (bfd *, arelent *, Elf_Internal_Rela *); |
252b5132 RH |
863 | |
864 | /* A function to determine whether a symbol is global when | |
865 | partitioning the symbol table into local and global symbols. | |
866 | This should be NULL for most targets, in which case the correct | |
867 | thing will be done. MIPS ELF, at least on the Irix 5, has | |
868 | special requirements. */ | |
b34976b6 | 869 | bfd_boolean (*elf_backend_sym_is_global) |
c39a58e6 | 870 | (bfd *, asymbol *); |
252b5132 RH |
871 | |
872 | /* The remaining functions are hooks which are called only if they | |
873 | are not NULL. */ | |
874 | ||
875 | /* A function to permit a backend specific check on whether a | |
876 | particular BFD format is relevant for an object file, and to | |
877 | permit the backend to set any global information it wishes. When | |
878 | this is called elf_elfheader is set, but anything else should be | |
b34976b6 | 879 | used with caution. If this returns FALSE, the check_format |
252b5132 | 880 | routine will return a bfd_error_wrong_format error. */ |
b34976b6 | 881 | bfd_boolean (*elf_backend_object_p) |
c39a58e6 | 882 | (bfd *); |
252b5132 RH |
883 | |
884 | /* A function to do additional symbol processing when reading the | |
885 | ELF symbol table. This is where any processor-specific special | |
886 | section indices are handled. */ | |
dc810e39 | 887 | void (*elf_backend_symbol_processing) |
c39a58e6 | 888 | (bfd *, asymbol *); |
252b5132 RH |
889 | |
890 | /* A function to do additional symbol processing after reading the | |
891 | entire ELF symbol table. */ | |
b34976b6 | 892 | bfd_boolean (*elf_backend_symbol_table_processing) |
c39a58e6 | 893 | (bfd *, elf_symbol_type *, unsigned int); |
252b5132 | 894 | |
8387904d | 895 | /* A function to set the type of the info field. Processor-specific |
3e932841 | 896 | types should be handled here. */ |
dc810e39 | 897 | int (*elf_backend_get_symbol_type) |
c39a58e6 | 898 | (Elf_Internal_Sym *, int); |
60bcf0fa | 899 | |
8387904d AM |
900 | /* A function to return the linker hash table entry of a symbol that |
901 | might be satisfied by an archive symbol. */ | |
902 | struct elf_link_hash_entry * (*elf_backend_archive_symbol_lookup) | |
903 | (bfd *, struct bfd_link_info *, const char *); | |
904 | ||
174fd7f9 RS |
905 | /* Return true if local section symbols should have a non-null st_name. |
906 | NULL implies false. */ | |
907 | bfd_boolean (*elf_backend_name_local_section_symbols) | |
908 | (bfd *); | |
909 | ||
252b5132 RH |
910 | /* A function to do additional processing on the ELF section header |
911 | just before writing it out. This is used to set the flags and | |
912 | type fields for some sections, or to actually write out data for | |
913 | unusual sections. */ | |
b34976b6 | 914 | bfd_boolean (*elf_backend_section_processing) |
c39a58e6 | 915 | (bfd *, Elf_Internal_Shdr *); |
252b5132 RH |
916 | |
917 | /* A function to handle unusual section types when creating BFD | |
918 | sections from ELF sections. */ | |
b34976b6 | 919 | bfd_boolean (*elf_backend_section_from_shdr) |
6dc132d9 | 920 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
252b5132 | 921 | |
551b43fd | 922 | /* A function to convert machine dependent ELF section header flags to |
fa152c49 | 923 | BFD internal section header flags. */ |
b34976b6 | 924 | bfd_boolean (*elf_backend_section_flags) |
1829f4b2 | 925 | (flagword *, const Elf_Internal_Shdr *); |
fa152c49 | 926 | |
551b43fd AM |
927 | /* A function that returns a struct containing ELF section flags and |
928 | type for the given BFD section. */ | |
929 | const struct bfd_elf_special_section * (*get_sec_type_attr) | |
930 | (bfd *, asection *); | |
931 | ||
20cfcaae | 932 | /* A function to handle unusual program segment types when creating BFD |
3e932841 | 933 | sections from ELF program segments. */ |
b34976b6 | 934 | bfd_boolean (*elf_backend_section_from_phdr) |
d27f5fa1 | 935 | (bfd *, Elf_Internal_Phdr *, int, const char *); |
20cfcaae | 936 | |
252b5132 RH |
937 | /* A function to set up the ELF section header for a BFD section in |
938 | preparation for writing it out. This is where the flags and type | |
939 | fields are set for unusual sections. */ | |
b34976b6 | 940 | bfd_boolean (*elf_backend_fake_sections) |
c39a58e6 | 941 | (bfd *, Elf_Internal_Shdr *, asection *); |
252b5132 RH |
942 | |
943 | /* A function to get the ELF section index for a BFD section. If | |
b34976b6 | 944 | this returns TRUE, the section was found. If it is a normal ELF |
252b5132 RH |
945 | section, *RETVAL should be left unchanged. If it is not a normal |
946 | ELF section *RETVAL should be set to the SHN_xxxx index. */ | |
b34976b6 | 947 | bfd_boolean (*elf_backend_section_from_bfd_section) |
c39a58e6 | 948 | (bfd *, asection *, int *retval); |
252b5132 RH |
949 | |
950 | /* If this field is not NULL, it is called by the add_symbols phase | |
951 | of a link just before adding a symbol to the global linker hash | |
952 | table. It may modify any of the fields as it wishes. If *NAME | |
953 | is set to NULL, the symbol will be skipped rather than being | |
954 | added to the hash table. This function is responsible for | |
955 | handling all processor dependent symbol bindings and section | |
956 | indices, and must set at least *FLAGS and *SEC for each processor | |
957 | dependent case; failure to do so will cause a link error. */ | |
b34976b6 | 958 | bfd_boolean (*elf_add_symbol_hook) |
555cd476 | 959 | (bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *, |
c39a58e6 | 960 | const char **name, flagword *flags, asection **sec, bfd_vma *value); |
252b5132 RH |
961 | |
962 | /* If this field is not NULL, it is called by the elf_link_output_sym | |
6e0b88f1 AM |
963 | phase of a link for each symbol which will appear in the object file. |
964 | On error, this function returns 0. 1 is returned when the symbol | |
965 | should be output, 2 is returned when the symbol should be discarded. */ | |
966 | int (*elf_backend_link_output_symbol_hook) | |
754021d0 AM |
967 | (struct bfd_link_info *info, const char *, Elf_Internal_Sym *, |
968 | asection *, struct elf_link_hash_entry *); | |
252b5132 RH |
969 | |
970 | /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend | |
971 | linker the first time it encounters a dynamic object in the link. | |
972 | This function must create any sections required for dynamic | |
973 | linking. The ABFD argument is a dynamic object. The .interp, | |
974 | .dynamic, .dynsym, .dynstr, and .hash functions have already been | |
975 | created, and this function may modify the section flags if | |
976 | desired. This function will normally create the .got and .plt | |
977 | sections, but different backends have different requirements. */ | |
b34976b6 | 978 | bfd_boolean (*elf_backend_create_dynamic_sections) |
c39a58e6 | 979 | (bfd *abfd, struct bfd_link_info *info); |
252b5132 | 980 | |
aee6f5b4 AO |
981 | /* When creating a shared library, determine whether to omit the |
982 | dynamic symbol for the section. */ | |
983 | bfd_boolean (*elf_backend_omit_section_dynsym) | |
984 | (bfd *output_bfd, struct bfd_link_info *info, asection *osec); | |
985 | ||
13285a1b AM |
986 | /* Return TRUE if relocations of targets are compatible to the extent |
987 | that CHECK_RELOCS will properly process them. PR 4424. */ | |
988 | bfd_boolean (*relocs_compatible) (const bfd_target *, const bfd_target *); | |
989 | ||
252b5132 RH |
990 | /* The CHECK_RELOCS function is called by the add_symbols phase of |
991 | the ELF backend linker. It is called once for each section with | |
992 | relocs of an object file, just after the symbols for the object | |
993 | file have been added to the global linker hash table. The | |
994 | function must look through the relocs and do any special handling | |
995 | required. This generally means allocating space in the global | |
996 | offset table, and perhaps allocating space for a reloc. The | |
997 | relocs are always passed as Rela structures; if the section | |
998 | actually uses Rel structures, the r_addend field will always be | |
999 | zero. */ | |
b34976b6 | 1000 | bfd_boolean (*check_relocs) |
c39a58e6 AM |
1001 | (bfd *abfd, struct bfd_link_info *info, asection *o, |
1002 | const Elf_Internal_Rela *relocs); | |
252b5132 | 1003 | |
85fbca6a NC |
1004 | /* The CHECK_DIRECTIVES function is called once per input file by |
1005 | the add_symbols phase of the ELF backend linker. The function | |
1006 | must inspect the bfd and create any additional symbols according | |
1007 | to any custom directives in the bfd. */ | |
1008 | bfd_boolean (*check_directives) | |
1009 | (bfd *abfd, struct bfd_link_info *info); | |
1010 | ||
e5034e59 AM |
1011 | /* The NOTICE_AS_NEEDED function is called as the linker is about to |
1012 | handle an as-needed lib (ACT = notice_as_needed), and after the | |
1013 | linker has decided to keep the lib (ACT = notice_needed) or when | |
1014 | the lib is not needed (ACT = notice_not_needed). */ | |
1015 | bfd_boolean (*notice_as_needed) | |
1016 | (bfd *abfd, struct bfd_link_info *info, enum notice_asneeded_action act); | |
97fed1c9 | 1017 | |
252b5132 RH |
1018 | /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend |
1019 | linker for every symbol which is defined by a dynamic object and | |
1020 | referenced by a regular object. This is called after all the | |
1021 | input files have been seen, but before the SIZE_DYNAMIC_SECTIONS | |
1022 | function has been called. The hash table entry should be | |
1023 | bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be | |
1024 | defined in a section from a dynamic object. Dynamic object | |
1025 | sections are not included in the final link, and this function is | |
1026 | responsible for changing the value to something which the rest of | |
1027 | the link can deal with. This will normally involve adding an | |
1028 | entry to the .plt or .got or some such section, and setting the | |
1029 | symbol to point to that. */ | |
b34976b6 | 1030 | bfd_boolean (*elf_backend_adjust_dynamic_symbol) |
c39a58e6 | 1031 | (struct bfd_link_info *info, struct elf_link_hash_entry *h); |
252b5132 RH |
1032 | |
1033 | /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker | |
1034 | after all the linker input files have been seen but before the | |
1035 | section sizes have been set. This is called after | |
1036 | ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */ | |
b34976b6 | 1037 | bfd_boolean (*elf_backend_always_size_sections) |
c39a58e6 | 1038 | (bfd *output_bfd, struct bfd_link_info *info); |
252b5132 RH |
1039 | |
1040 | /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend | |
1041 | linker after all the linker input files have been seen but before | |
1042 | the sections sizes have been set. This is called after | |
1043 | ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols. | |
1044 | It is only called when linking against a dynamic object. It must | |
1045 | set the sizes of the dynamic sections, and may fill in their | |
1046 | contents as well. The generic ELF linker can handle the .dynsym, | |
1047 | .dynstr and .hash sections. This function must handle the | |
1048 | .interp section and any sections created by the | |
1049 | CREATE_DYNAMIC_SECTIONS entry point. */ | |
b34976b6 | 1050 | bfd_boolean (*elf_backend_size_dynamic_sections) |
c39a58e6 | 1051 | (bfd *output_bfd, struct bfd_link_info *info); |
252b5132 | 1052 | |
74541ad4 AM |
1053 | /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections |
1054 | we keep to use as a base for relocs and symbols. */ | |
1055 | void (*elf_backend_init_index_section) | |
1056 | (bfd *output_bfd, struct bfd_link_info *info); | |
1057 | ||
252b5132 RH |
1058 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
1059 | to handle the relocations for a section. | |
1060 | ||
1061 | The relocs are always passed as Rela structures; if the section | |
1062 | actually uses Rel structures, the r_addend field will always be | |
1063 | zero. | |
1064 | ||
1065 | This function is responsible for adjust the section contents as | |
1066 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 1067 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
1068 | necessary. |
1069 | ||
1070 | This function does not have to worry about setting the reloc | |
1071 | address or the reloc symbol index. | |
1072 | ||
1073 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
1074 | ||
1075 | LOCAL_SECTIONS is an array giving the section in the input file | |
1076 | corresponding to the st_shndx field of each local symbol. | |
1077 | ||
1078 | The global hash table entry for the global symbols can be found | |
1079 | via elf_sym_hashes (input_bfd). | |
1080 | ||
1049f94e | 1081 | When generating relocatable output, this function must handle |
252b5132 RH |
1082 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
1083 | going to be the section symbol corresponding to the output | |
1084 | section, which means that the addend must be adjusted | |
ece5ef60 AM |
1085 | accordingly. |
1086 | ||
1087 | Returns FALSE on error, TRUE on success, 2 if successful and | |
1088 | relocations should be written for this section. */ | |
1089 | int (*elf_backend_relocate_section) | |
c39a58e6 AM |
1090 | (bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd, |
1091 | asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs, | |
1092 | Elf_Internal_Sym *local_syms, asection **local_sections); | |
252b5132 RH |
1093 | |
1094 | /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend | |
1095 | linker just before it writes a symbol out to the .dynsym section. | |
1096 | The processor backend may make any required adjustment to the | |
1097 | symbol. It may also take the opportunity to set contents of the | |
1098 | dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on | |
1099 | all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called | |
1100 | on those symbols which are defined by a dynamic object. */ | |
b34976b6 | 1101 | bfd_boolean (*elf_backend_finish_dynamic_symbol) |
c39a58e6 AM |
1102 | (bfd *output_bfd, struct bfd_link_info *info, |
1103 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym); | |
252b5132 RH |
1104 | |
1105 | /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend | |
1106 | linker just before it writes all the dynamic sections out to the | |
1107 | output file. The FINISH_DYNAMIC_SYMBOL will have been called on | |
1108 | all dynamic symbols. */ | |
b34976b6 | 1109 | bfd_boolean (*elf_backend_finish_dynamic_sections) |
c39a58e6 | 1110 | (bfd *output_bfd, struct bfd_link_info *info); |
252b5132 RH |
1111 | |
1112 | /* A function to do any beginning processing needed for the ELF file | |
1113 | before building the ELF headers and computing file positions. */ | |
1114 | void (*elf_backend_begin_write_processing) | |
c39a58e6 | 1115 | (bfd *, struct bfd_link_info *); |
252b5132 RH |
1116 | |
1117 | /* A function to do any final processing needed for the ELF file | |
b34976b6 | 1118 | before writing it out. The LINKER argument is TRUE if this BFD |
252b5132 RH |
1119 | was created by the ELF backend linker. */ |
1120 | void (*elf_backend_final_write_processing) | |
c39a58e6 | 1121 | (bfd *, bfd_boolean linker); |
252b5132 RH |
1122 | |
1123 | /* This function is called by get_program_header_size. It should | |
1124 | return the number of additional program segments which this BFD | |
1125 | will need. It should return -1 on error. */ | |
dc810e39 | 1126 | int (*elf_backend_additional_program_headers) |
a6b96beb | 1127 | (bfd *, struct bfd_link_info *); |
252b5132 RH |
1128 | |
1129 | /* This function is called to modify an existing segment map in a | |
1130 | backend specific fashion. */ | |
b34976b6 | 1131 | bfd_boolean (*elf_backend_modify_segment_map) |
c84fca4d | 1132 | (bfd *, struct bfd_link_info *); |
252b5132 | 1133 | |
e36284ab AM |
1134 | /* This function is called to modify program headers just before |
1135 | they are written. */ | |
1136 | bfd_boolean (*elf_backend_modify_program_headers) | |
1137 | (bfd *, struct bfd_link_info *); | |
1138 | ||
1a9ccd70 NC |
1139 | /* This function is called to see if the PHDR header should be |
1140 | checked for validity. */ | |
1141 | bfd_boolean (*elf_backend_allow_non_load_phdr) | |
1142 | (bfd *, const Elf_Internal_Phdr *, unsigned); | |
1143 | ||
74f0fb50 AM |
1144 | /* This function is called before section garbage collection to |
1145 | mark entry symbol sections. */ | |
1146 | void (*gc_keep) | |
1147 | (struct bfd_link_info *); | |
1148 | ||
64d03ab5 AM |
1149 | /* This function is called during section garbage collection to |
1150 | mark sections that define global symbols. */ | |
1151 | bfd_boolean (*gc_mark_dynamic_ref) | |
74f0fb50 | 1152 | (struct elf_link_hash_entry *, void *); |
64d03ab5 | 1153 | |
252b5132 | 1154 | /* This function is called during section gc to discover the section a |
1e2f5b6e | 1155 | particular relocation refers to. */ |
6a5bb875 PB |
1156 | elf_gc_mark_hook_fn gc_mark_hook; |
1157 | ||
1158 | /* This function, if defined, is called after the first gc marking pass | |
1159 | to allow the backend to mark additional sections. */ | |
1160 | bfd_boolean (*gc_mark_extra_sections) | |
74f0fb50 | 1161 | (struct bfd_link_info *, elf_gc_mark_hook_fn); |
252b5132 RH |
1162 | |
1163 | /* This function, if defined, is called during the sweep phase of gc | |
1164 | in order that a backend might update any data structures it might | |
1165 | be maintaining. */ | |
b34976b6 | 1166 | bfd_boolean (*gc_sweep_hook) |
74f0fb50 | 1167 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); |
252b5132 | 1168 | |
e6c51ed4 NC |
1169 | /* This function, if defined, is called after the ELF headers have |
1170 | been created. This allows for things like the OS and ABI versions | |
1171 | to be changed. */ | |
1172 | void (*elf_backend_post_process_headers) | |
c39a58e6 | 1173 | (bfd *, struct bfd_link_info *); |
e6c51ed4 | 1174 | |
587ff49e RH |
1175 | /* This function, if defined, prints a symbol to file and returns the |
1176 | name of the symbol to be printed. It should return NULL to fall | |
1177 | back to default symbol printing. */ | |
1178 | const char *(*elf_backend_print_symbol_all) | |
c39a58e6 | 1179 | (bfd *, void *, asymbol *); |
587ff49e RH |
1180 | |
1181 | /* This function, if defined, is called after all local symbols and | |
4cc11e76 | 1182 | global symbols converted to locals are emitted into the symtab |
4e617b1e | 1183 | section. It allows the backend to emit special local symbols |
587ff49e | 1184 | not handled in the hash table. */ |
4e617b1e PB |
1185 | bfd_boolean (*elf_backend_output_arch_local_syms) |
1186 | (bfd *, struct bfd_link_info *, void *, | |
1187 | bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *, | |
1188 | struct elf_link_hash_entry *)); | |
1189 | ||
1190 | /* This function, if defined, is called after all symbols are emitted | |
1191 | into the symtab section. It allows the backend to emit special | |
1192 | global symbols not handled in the hash table. */ | |
b34976b6 | 1193 | bfd_boolean (*elf_backend_output_arch_syms) |
c39a58e6 | 1194 | (bfd *, struct bfd_link_info *, void *, |
754021d0 AM |
1195 | bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *, |
1196 | struct elf_link_hash_entry *)); | |
587ff49e | 1197 | |
76359541 TP |
1198 | /* Filter what symbols of the output file to include in the import |
1199 | library if one is created. */ | |
1200 | unsigned int (*elf_backend_filter_implib_symbols) | |
1201 | (bfd *, struct bfd_link_info *, asymbol **, long); | |
1202 | ||
d4c88bbb | 1203 | /* Copy any information related to dynamic linking from a pre-existing |
0a991dfe AM |
1204 | symbol to a newly created symbol. Also called to copy flags and |
1205 | other back-end info to a weakdef, in which case the symbol is not | |
1206 | newly created and plt/got refcounts and dynamic indices should not | |
1207 | be copied. */ | |
c61b8717 | 1208 | void (*elf_backend_copy_indirect_symbol) |
fcfa13d2 | 1209 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
c39a58e6 | 1210 | struct elf_link_hash_entry *); |
c61b8717 RH |
1211 | |
1212 | /* Modify any information related to dynamic linking such that the | |
1213 | symbol is not exported. */ | |
1214 | void (*elf_backend_hide_symbol) | |
c39a58e6 | 1215 | (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean); |
c61b8717 | 1216 | |
508c3946 L |
1217 | /* A function to do additional symbol fixup, called by |
1218 | _bfd_elf_fix_symbol_flags. */ | |
1219 | bfd_boolean (*elf_backend_fixup_symbol) | |
1220 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
1221 | ||
9bf7216d KK |
1222 | /* Merge the backend specific symbol attribute. */ |
1223 | void (*elf_backend_merge_symbol_attribute) | |
1224 | (struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean, | |
1225 | bfd_boolean); | |
1226 | ||
ad9563d6 CM |
1227 | /* This function, if defined, will return a string containing the |
1228 | name of a target-specific dynamic tag. */ | |
1229 | char *(*elf_backend_get_target_dtag) | |
1230 | (bfd_vma); | |
1231 | ||
12ac1cf5 NC |
1232 | /* Decide whether an undefined symbol is special and can be ignored. |
1233 | This is the case for OPTIONAL symbols on IRIX. */ | |
1234 | bfd_boolean (*elf_backend_ignore_undef_symbol) | |
1235 | (struct elf_link_hash_entry *); | |
1236 | ||
9317eacc CM |
1237 | /* Emit relocations. Overrides default routine for emitting relocs, |
1238 | except during a relocatable link, or if all relocs are being emitted. */ | |
b34976b6 | 1239 | bfd_boolean (*elf_backend_emit_relocs) |
eac338cf PB |
1240 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, |
1241 | struct elf_link_hash_entry **); | |
9317eacc | 1242 | |
9eaff861 AO |
1243 | /* Update relocations. It is allowed to change the number and the order. |
1244 | In such a case hashes should be invalidated. */ | |
1245 | void (*elf_backend_update_relocs) | |
1246 | (asection *, struct bfd_elf_section_reloc_data *); | |
1247 | ||
9317eacc CM |
1248 | /* Count relocations. Not called for relocatable links |
1249 | or if all relocs are being preserved in the output. */ | |
1250 | unsigned int (*elf_backend_count_relocs) | |
58217f29 | 1251 | (struct bfd_link_info *, asection *); |
9317eacc | 1252 | |
491d01d3 YU |
1253 | /* Count additionals relocations. Called for relocatable links if |
1254 | additional relocations needs to be created. */ | |
1255 | unsigned int (*elf_backend_count_additional_relocs) | |
1256 | (asection *); | |
1257 | ||
28dbcedc AM |
1258 | /* Say whether to sort relocs output by ld -r and ld --emit-relocs, |
1259 | by r_offset. If NULL, default to true. */ | |
1260 | bfd_boolean (*sort_relocs_p) | |
1261 | (asection *); | |
1262 | ||
bb0082d6 | 1263 | /* This function, if defined, is called when an NT_PRSTATUS note is found |
183e98be | 1264 | in a core file. */ |
b34976b6 | 1265 | bfd_boolean (*elf_backend_grok_prstatus) |
c39a58e6 | 1266 | (bfd *, Elf_Internal_Note *); |
bb0082d6 AM |
1267 | |
1268 | /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO | |
183e98be | 1269 | note is found in a core file. */ |
b34976b6 | 1270 | bfd_boolean (*elf_backend_grok_psinfo) |
c39a58e6 | 1271 | (bfd *, Elf_Internal_Note *); |
bb0082d6 | 1272 | |
183e98be AM |
1273 | /* This function, if defined, is called to write a note to a corefile. */ |
1274 | char *(*elf_backend_write_core_note) | |
1275 | (bfd *abfd, char *buf, int *bufsiz, int note_type, ...); | |
1276 | ||
ae17ab41 CM |
1277 | /* This function, if defined, is called to convert target-specific |
1278 | section flag names into hex values. */ | |
1279 | flagword (*elf_backend_lookup_section_flags_hook) | |
1280 | (char *); | |
1281 | ||
db6751f2 | 1282 | /* This function returns class of a reloc type. */ |
f51e552e | 1283 | enum elf_reloc_type_class (*elf_backend_reloc_type_class) |
7e612e98 | 1284 | (const struct bfd_link_info *, const asection *, const Elf_Internal_Rela *); |
db6751f2 | 1285 | |
73d074b4 DJ |
1286 | /* This function, if defined, removes information about discarded functions |
1287 | from other sections which mention them. */ | |
b34976b6 | 1288 | bfd_boolean (*elf_backend_discard_info) |
c39a58e6 | 1289 | (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *); |
73d074b4 DJ |
1290 | |
1291 | /* This function, if defined, signals that the function above has removed | |
1292 | the discarded relocations for this section. */ | |
b34976b6 | 1293 | bfd_boolean (*elf_backend_ignore_discarded_relocs) |
c39a58e6 | 1294 | (asection *); |
73d074b4 | 1295 | |
8a696751 AM |
1296 | /* What to do when ld finds relocations against symbols defined in |
1297 | discarded sections. */ | |
1298 | unsigned int (*action_discarded) | |
1299 | (asection *); | |
1300 | ||
8c946ed5 RS |
1301 | /* This function returns the width of FDE pointers in bytes, or 0 if |
1302 | that can't be determined for some reason. The default definition | |
1303 | goes by the bfd's EI_CLASS. */ | |
1304 | unsigned int (*elf_backend_eh_frame_address_size) | |
76c20d54 | 1305 | (bfd *, const asection *); |
8c946ed5 | 1306 | |
ec3391e7 AO |
1307 | /* These functions tell elf-eh-frame whether to attempt to turn |
1308 | absolute or lsda encodings into pc-relative ones. The default | |
1309 | definition enables these transformations. */ | |
1310 | bfd_boolean (*elf_backend_can_make_relative_eh_frame) | |
1311 | (bfd *, struct bfd_link_info *, asection *); | |
1312 | bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame) | |
1313 | (bfd *, struct bfd_link_info *, asection *); | |
1314 | ||
1315 | /* This function returns an encoding after computing the encoded | |
1316 | value (and storing it in ENCODED) for the given OFFSET into OSEC, | |
1317 | to be stored in at LOC_OFFSET into the LOC_SEC input section. | |
1318 | The default definition chooses a 32-bit PC-relative encoding. */ | |
1319 | bfd_byte (*elf_backend_encode_eh_address) | |
1320 | (bfd *abfd, struct bfd_link_info *info, | |
1321 | asection *osec, bfd_vma offset, | |
1322 | asection *loc_sec, bfd_vma loc_offset, | |
1323 | bfd_vma *encoded); | |
1324 | ||
73d074b4 | 1325 | /* This function, if defined, may write out the given section. |
b34976b6 AM |
1326 | Returns TRUE if it did so and FALSE if the caller should. */ |
1327 | bfd_boolean (*elf_backend_write_section) | |
c7b8f16e | 1328 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
73d074b4 | 1329 | |
c6e90b02 TS |
1330 | /* The level of IRIX compatibility we're striving for. |
1331 | MIPS ELF specific function. */ | |
1332 | irix_compat_t (*elf_backend_mips_irix_compat) | |
c39a58e6 | 1333 | (bfd *); |
c6e90b02 TS |
1334 | |
1335 | reloc_howto_type *(*elf_backend_mips_rtype_to_howto) | |
c39a58e6 | 1336 | (unsigned int, bfd_boolean); |
c6e90b02 | 1337 | |
252b5132 RH |
1338 | /* The swapping table to use when dealing with ECOFF information. |
1339 | Used for the MIPS ELF .mdebug section. */ | |
1340 | const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap; | |
1341 | ||
8d6337fe RM |
1342 | /* This function implements `bfd_elf_bfd_from_remote_memory'; |
1343 | see elf.c, elfcode.h. */ | |
1344 | bfd *(*elf_backend_bfd_from_remote_memory) | |
f0a5d95a | 1345 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
5979d6b6 AM |
1346 | int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr, |
1347 | bfd_size_type len)); | |
8d6337fe | 1348 | |
4c45e5c9 JJ |
1349 | /* This function is used by `_bfd_elf_get_synthetic_symtab'; |
1350 | see elf.c. */ | |
1351 | bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *); | |
1352 | ||
a4d8e49b L |
1353 | /* Is symbol defined in common section? */ |
1354 | bfd_boolean (*common_definition) (Elf_Internal_Sym *); | |
1355 | ||
1356 | /* Return a common section index for section. */ | |
1357 | unsigned int (*common_section_index) (asection *); | |
1358 | ||
1359 | /* Return a common section for section. */ | |
1360 | asection *(*common_section) (asection *); | |
1361 | ||
1362 | /* Return TRUE if we can merge 2 definitions. */ | |
5d13b3b3 AM |
1363 | bfd_boolean (*merge_symbol) (struct elf_link_hash_entry *, |
1364 | const Elf_Internal_Sym *, asection **, | |
1365 | bfd_boolean, bfd_boolean, | |
1366 | bfd *, const asection *); | |
a4d8e49b | 1367 | |
fdc90cb4 JJ |
1368 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
1369 | bfd_boolean (*elf_hash_symbol) (struct elf_link_hash_entry *); | |
1370 | ||
fcb93ecf PB |
1371 | /* Return TRUE if type is a function symbol type. */ |
1372 | bfd_boolean (*is_function_type) (unsigned int type); | |
1373 | ||
aef36ac1 AM |
1374 | /* If the ELF symbol SYM might be a function in SEC, return the |
1375 | function size and set *CODE_OFF to the function's entry point, | |
1376 | otherwise return zero. */ | |
1377 | bfd_size_type (*maybe_function_sym) (const asymbol *sym, asection *sec, | |
1378 | bfd_vma *code_off); | |
9f296da3 | 1379 | |
bce964aa AM |
1380 | /* Given NAME, the name of a relocation section stripped of its |
1381 | .rel/.rela prefix, return the section in ABFD to which the | |
1382 | relocations apply. */ | |
1383 | asection *(*get_reloc_section) (bfd *abfd, const char *name); | |
bd53a53a | 1384 | |
5522f910 NC |
1385 | /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which |
1386 | has a type >= SHT_LOOS. Returns TRUE if the fields were initialised, | |
1387 | FALSE otherwise. Can be called multiple times for a given section, | |
1388 | until it returns TRUE. Most of the times it is called ISECTION will be | |
1389 | set to an input section that might be associated with the output section. | |
1390 | The last time that it is called, ISECTION will be set to NULL. */ | |
1391 | bfd_boolean (*elf_backend_copy_special_section_fields) | |
1392 | (const bfd *ibfd, bfd *obfd, const Elf_Internal_Shdr *isection, | |
1393 | Elf_Internal_Shdr *osection); | |
84865015 | 1394 | |
185d09ad | 1395 | /* Used to handle bad SHF_LINK_ORDER input. */ |
52d45da3 | 1396 | void (*link_order_error_handler) (const char *, ...); |
185d09ad | 1397 | |
4c45e5c9 JJ |
1398 | /* Name of the PLT relocation section. */ |
1399 | const char *relplt_name; | |
1400 | ||
252b5132 RH |
1401 | /* Alternate EM_xxxx machine codes for this backend. */ |
1402 | int elf_machine_alt1; | |
1403 | int elf_machine_alt2; | |
1404 | ||
1405 | const struct elf_size_info *s; | |
1406 | ||
29ef7005 L |
1407 | /* An array of target specific special sections. */ |
1408 | const struct bfd_elf_special_section *special_sections; | |
1409 | ||
6f2f2c9d DJ |
1410 | /* The size in bytes of the header for the GOT. This includes the |
1411 | so-called reserved entries on some systems. */ | |
252b5132 | 1412 | bfd_vma got_header_size; |
252b5132 | 1413 | |
10455f89 HPN |
1414 | /* The size of the GOT entry for the symbol pointed to by H if non-NULL, |
1415 | otherwise by the local symbol with index SYMNDX in IBFD. */ | |
1416 | bfd_vma (*got_elt_size) (bfd *, struct bfd_link_info *, | |
1417 | struct elf_link_hash_entry *h, | |
1418 | bfd *ibfd, unsigned long symndx); | |
1419 | ||
104d59d1 JM |
1420 | /* The vendor name to use for a processor-standard attributes section. */ |
1421 | const char *obj_attrs_vendor; | |
1422 | ||
1423 | /* The section name to use for a processor-standard attributes section. */ | |
1424 | const char *obj_attrs_section; | |
1425 | ||
1426 | /* Return 1, 2 or 3 to indicate what type of arguments a | |
1427 | processor-specific tag takes. */ | |
1428 | int (*obj_attrs_arg_type) (int); | |
1429 | ||
1430 | /* The section type to use for an attributes section. */ | |
1431 | unsigned int obj_attrs_section_type; | |
1432 | ||
3de4a297 JM |
1433 | /* This function determines the order in which any attributes are |
1434 | written. It must be defined for input in the range | |
1435 | LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range | |
1436 | is used in order to make unity easy). The returned value is the | |
1437 | actual tag number to place in the input position. */ | |
5aa6ff7c AS |
1438 | int (*obj_attrs_order) (int); |
1439 | ||
e8b36cd1 JM |
1440 | /* Handle merging unknown attributes; either warn and return TRUE, |
1441 | or give an error and return FALSE. */ | |
1442 | bfd_boolean (*obj_attrs_handle_unknown) (bfd *, int); | |
1443 | ||
46bed679 L |
1444 | /* Parse GNU properties. Return the property kind. If the property |
1445 | is corrupt, issue an error message and return property_corrupt. */ | |
1446 | enum elf_property_kind (*parse_gnu_properties) (bfd *, unsigned int, | |
1447 | bfd_byte *, | |
1448 | unsigned int); | |
1449 | ||
1450 | /* Merge GNU properties. Return TRUE if property is updated. */ | |
5c3ce2bc L |
1451 | bfd_boolean (*merge_gnu_properties) (struct bfd_link_info *, bfd *, |
1452 | elf_property *, elf_property *); | |
46bed679 L |
1453 | |
1454 | /* Set up GNU properties. */ | |
fba37edd | 1455 | bfd *(*setup_gnu_properties) (struct bfd_link_info *); |
46bed679 | 1456 | |
2f0c68f2 CM |
1457 | /* Encoding used for compact EH tables. */ |
1458 | int (*compact_eh_encoding) (struct bfd_link_info *); | |
1459 | ||
1460 | /* Opcode representing no unwind. */ | |
1461 | int (*cant_unwind_opcode) (struct bfd_link_info *); | |
1462 | ||
7dc98aea RO |
1463 | /* This is non-zero if static TLS segments require a special alignment. */ |
1464 | unsigned static_tls_alignment; | |
1465 | ||
9eaff861 | 1466 | /* Alignment for the PT_GNU_STACK segment. */ |
04c3a755 NS |
1467 | unsigned stack_align; |
1468 | ||
84865015 NC |
1469 | /* Flag bits to assign to a section of type SHT_STRTAB. */ |
1470 | unsigned long elf_strtab_flags; | |
1471 | ||
b34976b6 AM |
1472 | /* This is TRUE if the linker should act like collect and gather |
1473 | global constructors and destructors by name. This is TRUE for | |
86dc0f79 RH |
1474 | MIPS ELF because the Irix 5 tools can not handle the .init |
1475 | section. */ | |
1476 | unsigned collect : 1; | |
1477 | ||
b34976b6 AM |
1478 | /* This is TRUE if the linker should ignore changes to the type of a |
1479 | symbol. This is TRUE for MIPS ELF because some Irix 5 objects | |
86dc0f79 RH |
1480 | record undefined functions as STT_OBJECT although the definitions |
1481 | are STT_FUNC. */ | |
1482 | unsigned type_change_ok : 1; | |
1483 | ||
bf572ba0 MM |
1484 | /* Whether the backend may use REL relocations. (Some backends use |
1485 | both REL and RELA relocations, and this flag is set for those | |
1486 | backends.) */ | |
1487 | unsigned may_use_rel_p : 1; | |
60bcf0fa | 1488 | |
bf572ba0 MM |
1489 | /* Whether the backend may use RELA relocations. (Some backends use |
1490 | both REL and RELA relocations, and this flag is set for those | |
1491 | backends.) */ | |
1492 | unsigned may_use_rela_p : 1; | |
1493 | ||
1494 | /* Whether the default relocation type is RELA. If a backend with | |
1495 | this flag set wants REL relocations for a particular section, | |
1496 | it must note that explicitly. Similarly, if this flag is clear, | |
60bcf0fa NC |
1497 | and the backend wants RELA relocations for a particular |
1498 | section. */ | |
bf572ba0 MM |
1499 | unsigned default_use_rela_p : 1; |
1500 | ||
d35fd659 RS |
1501 | /* True if PLT and copy relocations should be RELA by default. */ |
1502 | unsigned rela_plts_and_copies_p : 1; | |
1503 | ||
b491616a AM |
1504 | /* Set if RELA relocations for a relocatable link can be handled by |
1505 | generic code. Backends that set this flag need do nothing in the | |
1506 | backend relocate_section routine for relocatable linking. */ | |
1507 | unsigned rela_normal : 1; | |
1508 | ||
64f52338 AM |
1509 | /* Set if DT_REL/DT_RELA/DT_RELSZ/DT_RELASZ should not include PLT |
1510 | relocations. */ | |
1511 | unsigned dtrel_excludes_plt : 1; | |
1512 | ||
b34976b6 | 1513 | /* TRUE if addresses "naturally" sign extend. This is used when |
86dc0f79 RH |
1514 | swapping in from Elf32 when BFD64. */ |
1515 | unsigned sign_extend_vma : 1; | |
1516 | ||
252b5132 RH |
1517 | unsigned want_got_plt : 1; |
1518 | unsigned plt_readonly : 1; | |
1519 | unsigned want_plt_sym : 1; | |
1520 | unsigned plt_not_loaded : 1; | |
1521 | unsigned plt_alignment : 4; | |
1522 | unsigned can_gc_sections : 1; | |
51b64d56 | 1523 | unsigned can_refcount : 1; |
2517a57f | 1524 | unsigned want_got_sym : 1; |
3018b441 | 1525 | unsigned want_dynbss : 1; |
5474d94f | 1526 | unsigned want_dynrelro : 1; |
6bfdb61b AM |
1527 | |
1528 | /* Targets which do not support physical addressing often require | |
1529 | that the p_paddr field in the section header to be set to zero. | |
1530 | This field indicates whether this behavior is required. */ | |
5e8d7549 | 1531 | unsigned want_p_paddr_set_to_zero : 1; |
6bfdb61b | 1532 | |
a8c75b76 AM |
1533 | /* Target has broken hardware and/or kernel that requires pages not |
1534 | to be mapped twice with different permissions. */ | |
1535 | unsigned no_page_alias : 1; | |
1536 | ||
6bfdb61b AM |
1537 | /* True if an object file lacking a .note.GNU-stack section |
1538 | should be assumed to be requesting exec stack. At least one | |
1539 | other file in the link needs to have a .note.GNU-stack section | |
1540 | for a PT_GNU_STACK segment to be created. */ | |
1541 | unsigned default_execstack : 1; | |
53291d1f AM |
1542 | |
1543 | /* True if elf_section_data(sec)->this_hdr.contents is sec->rawsize | |
1544 | in length rather than sec->size in length, if sec->rawsize is | |
1545 | non-zero and smaller than sec->size. */ | |
1546 | unsigned caches_rawsize : 1; | |
f7483970 L |
1547 | |
1548 | /* Address of protected data defined in the shared library may be | |
1549 | external, i.e., due to copy relocation. */ | |
1550 | unsigned extern_protected_data : 1; | |
23ec1e32 MR |
1551 | |
1552 | /* True if `_bfd_elf_link_renumber_dynsyms' must be called even for | |
1553 | static binaries. */ | |
1554 | unsigned always_renumber_dynsyms : 1; | |
252b5132 RH |
1555 | }; |
1556 | ||
d4730f92 BS |
1557 | /* Information about reloc sections associated with a bfd_elf_section_data |
1558 | structure. */ | |
1559 | struct bfd_elf_section_reloc_data | |
1560 | { | |
1561 | /* The ELF header for the reloc section associated with this | |
1562 | section, if any. */ | |
1563 | Elf_Internal_Shdr *hdr; | |
1564 | /* The number of relocations currently assigned to HDR. */ | |
1565 | unsigned int count; | |
1566 | /* The ELF section number of the reloc section. Only used for an | |
1567 | output file. */ | |
1568 | int idx; | |
1569 | /* Used by the backend linker to store the symbol hash table entries | |
1570 | associated with relocs against global symbols. */ | |
1571 | struct elf_link_hash_entry **hashes; | |
1572 | }; | |
1573 | ||
252b5132 RH |
1574 | /* Information stored for each BFD section in an ELF file. This |
1575 | structure is allocated by elf_new_section_hook. */ | |
1576 | ||
1577 | struct bfd_elf_section_data | |
1578 | { | |
1579 | /* The ELF header for this section. */ | |
1580 | Elf_Internal_Shdr this_hdr; | |
0c715baa | 1581 | |
b9c361e0 JL |
1582 | /* INPUT_SECTION_FLAGS if specified in the linker script. */ |
1583 | struct flag_info *section_flag_info; | |
1584 | ||
d4730f92 BS |
1585 | /* Information about the REL and RELA reloc sections associated |
1586 | with this section, if any. */ | |
1587 | struct bfd_elf_section_reloc_data rel, rela; | |
0c715baa | 1588 | |
6dc132d9 | 1589 | /* The ELF section number of this section. */ |
252b5132 | 1590 | int this_idx; |
0c715baa | 1591 | |
f0abc2a1 AM |
1592 | /* Used by the backend linker when generating a shared library to |
1593 | record the dynamic symbol index for a section symbol | |
1594 | corresponding to this section. A value of 0 means that there is | |
1595 | no dynamic symbol for this section. */ | |
1596 | int dynindx; | |
1597 | ||
38ce5b11 L |
1598 | /* A pointer to the linked-to section for SHF_LINK_ORDER. */ |
1599 | asection *linked_to; | |
1600 | ||
252b5132 RH |
1601 | /* A pointer to the swapped relocs. If the section uses REL relocs, |
1602 | rather than RELA, all the r_addend fields will be zero. This | |
1603 | pointer may be NULL. It is used by the backend linker. */ | |
1604 | Elf_Internal_Rela *relocs; | |
0c715baa | 1605 | |
f0abc2a1 AM |
1606 | /* A pointer to a linked list tracking dynamic relocs copied for |
1607 | local symbols. */ | |
c39a58e6 | 1608 | void *local_dynrel; |
0c715baa | 1609 | |
f0abc2a1 AM |
1610 | /* A pointer to the bfd section used for dynamic relocs. */ |
1611 | asection *sreloc; | |
0c715baa | 1612 | |
1126897b AM |
1613 | union { |
1614 | /* Group name, if this section is a member of a group. */ | |
1615 | const char *name; | |
1616 | ||
1617 | /* Group signature sym, if this is the SHT_GROUP section. */ | |
fc0a2244 | 1618 | struct bfd_symbol *id; |
1126897b | 1619 | } group; |
dbb410c3 | 1620 | |
b0956e01 AM |
1621 | /* For a member of a group, points to the SHT_GROUP section. |
1622 | NULL for the SHT_GROUP section itself and non-group sections. */ | |
3d7f7666 L |
1623 | asection *sec_group; |
1624 | ||
b0956e01 AM |
1625 | /* A linked list of member sections in the group. Circular when used by |
1626 | the linker. For the SHT_GROUP section, points at first member. */ | |
dbb410c3 AM |
1627 | asection *next_in_group; |
1628 | ||
9d0a14d3 RS |
1629 | /* The FDEs associated with this section. The u.fde.next_in_section |
1630 | field acts as a chain pointer. */ | |
1631 | struct eh_cie_fde *fde_list; | |
1632 | ||
2f0c68f2 CM |
1633 | /* Link from a text section to its .eh_frame_entry section. */ |
1634 | asection *eh_frame_entry; | |
1635 | ||
f0abc2a1 | 1636 | /* A pointer used for various section optimizations. */ |
c39a58e6 | 1637 | void *sec_info; |
252b5132 RH |
1638 | }; |
1639 | ||
9f296da3 | 1640 | #define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd) |
38ce5b11 | 1641 | #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to) |
9f296da3 AM |
1642 | #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type) |
1643 | #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags) | |
1644 | #define elf_group_name(sec) (elf_section_data(sec)->group.name) | |
1645 | #define elf_group_id(sec) (elf_section_data(sec)->group.id) | |
1646 | #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group) | |
1647 | #define elf_fde_list(sec) (elf_section_data(sec)->fde_list) | |
3d7f7666 | 1648 | #define elf_sec_group(sec) (elf_section_data(sec)->sec_group) |
2f0c68f2 | 1649 | #define elf_section_eh_frame_entry(sec) (elf_section_data(sec)->eh_frame_entry) |
252b5132 | 1650 | |
24718e3b | 1651 | #define xvec_get_elf_backend_data(xvec) \ |
f7231afc | 1652 | ((const struct elf_backend_data *) (xvec)->backend_data) |
24718e3b | 1653 | |
252b5132 | 1654 | #define get_elf_backend_data(abfd) \ |
24718e3b | 1655 | xvec_get_elf_backend_data ((abfd)->xvec) |
252b5132 | 1656 | |
3de4a297 JM |
1657 | /* The least object attributes (within an attributes subsection) known |
1658 | for any target. Some code assumes that the value 0 is not used and | |
1659 | the field for that attribute can instead be used as a marker to | |
1660 | indicate that attributes have been initialized. */ | |
59e6276b | 1661 | #define LEAST_KNOWN_OBJ_ATTRIBUTE 2 |
3de4a297 | 1662 | |
104d59d1 | 1663 | /* The maximum number of known object attributes for any target. */ |
91e22acd | 1664 | #define NUM_KNOWN_OBJ_ATTRIBUTES 71 |
104d59d1 | 1665 | |
3483fe2e AS |
1666 | /* The value of an object attribute. The type indicates whether the attribute |
1667 | holds and integer, a string, or both. It can also indicate that there can | |
1668 | be no default (i.e. all values must be written to file, even zero). */ | |
104d59d1 JM |
1669 | |
1670 | typedef struct obj_attribute | |
1671 | { | |
3483fe2e AS |
1672 | #define ATTR_TYPE_FLAG_INT_VAL (1 << 0) |
1673 | #define ATTR_TYPE_FLAG_STR_VAL (1 << 1) | |
1674 | #define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2) | |
1675 | ||
1676 | #define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL) | |
1677 | #define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL) | |
1678 | #define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT) | |
1679 | ||
104d59d1 JM |
1680 | int type; |
1681 | unsigned int i; | |
1682 | char *s; | |
1683 | } obj_attribute; | |
1684 | ||
1685 | typedef struct obj_attribute_list | |
1686 | { | |
1687 | struct obj_attribute_list *next; | |
5ee4a1ca | 1688 | unsigned int tag; |
104d59d1 JM |
1689 | obj_attribute attr; |
1690 | } obj_attribute_list; | |
1691 | ||
1692 | /* Object attributes may either be defined by the processor ABI, index | |
1693 | OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific | |
1694 | (and possibly also processor-specific), index OBJ_ATTR_GNU. */ | |
1695 | #define OBJ_ATTR_PROC 0 | |
1696 | #define OBJ_ATTR_GNU 1 | |
1697 | #define OBJ_ATTR_FIRST OBJ_ATTR_PROC | |
1698 | #define OBJ_ATTR_LAST OBJ_ATTR_GNU | |
1699 | ||
1700 | /* The following object attribute tags are taken as generic, for all | |
1701 | targets and for "gnu" where there is no target standard. */ | |
1702 | enum | |
1703 | { | |
1704 | Tag_NULL = 0, | |
1705 | Tag_File = 1, | |
1706 | Tag_Section = 2, | |
1707 | Tag_Symbol = 3, | |
1708 | Tag_compatibility = 32 | |
1709 | }; | |
1710 | ||
e21e5835 NC |
1711 | /* The following struct stores information about every SystemTap section |
1712 | found in the object file. */ | |
1713 | struct sdt_note | |
1714 | { | |
1715 | struct sdt_note *next; | |
1716 | bfd_size_type size; | |
1717 | bfd_byte data[1]; | |
1718 | }; | |
1719 | ||
228e534f AM |
1720 | /* tdata information grabbed from an elf core file. */ |
1721 | struct core_elf_obj_tdata | |
1722 | { | |
1723 | int signal; | |
1724 | int pid; | |
1725 | int lwpid; | |
1726 | char* program; | |
1727 | char* command; | |
1728 | }; | |
1729 | ||
c0355132 AM |
1730 | /* Extra tdata information held for output ELF BFDs. */ |
1731 | struct output_elf_obj_tdata | |
1732 | { | |
1733 | struct elf_segment_map *seg_map; | |
1734 | struct elf_strtab_hash *strtab_ptr; | |
1735 | ||
1736 | /* STT_SECTION symbols for each section */ | |
1737 | asymbol **section_syms; | |
1738 | ||
1739 | /* Used to determine if PT_GNU_EH_FRAME segment header should be | |
1740 | created. */ | |
1741 | asection *eh_frame_hdr; | |
1742 | ||
1743 | /* NT_GNU_BUILD_ID note type info. */ | |
1744 | struct | |
1745 | { | |
1746 | bfd_boolean (*after_write_object_contents) (bfd *); | |
1747 | const char *style; | |
1748 | asection *sec; | |
1749 | } build_id; | |
1750 | ||
1751 | /* Records the result of `get_program_header_size'. */ | |
1752 | bfd_size_type program_header_size; | |
1753 | ||
1754 | /* Used when laying out sections. */ | |
1755 | file_ptr next_file_pos; | |
1756 | ||
1757 | int num_section_syms; | |
1758 | unsigned int shstrtab_section, strtab_section; | |
1759 | ||
1760 | /* Segment flags for the PT_GNU_STACK segment. */ | |
1761 | unsigned int stack_flags; | |
1762 | ||
1763 | /* This is set to TRUE if the object was created by the backend | |
1764 | linker. */ | |
1765 | bfd_boolean linker; | |
1766 | ||
1767 | /* Used to determine if the e_flags field has been initialized */ | |
1768 | bfd_boolean flags_init; | |
1769 | }; | |
1770 | ||
13a2df29 L |
1771 | /* Indicate if the bfd contains symbols that have the STT_GNU_IFUNC |
1772 | symbol type or STB_GNU_UNIQUE binding. Used to set the osabi | |
1773 | field in the ELF header structure. */ | |
1774 | enum elf_gnu_symbols | |
9eaff861 AO |
1775 | { |
1776 | elf_gnu_symbol_none = 0, | |
1777 | elf_gnu_symbol_any = 1 << 0, | |
1778 | elf_gnu_symbol_ifunc = (elf_gnu_symbol_any | 1 << 1), | |
1779 | elf_gnu_symbol_unique = (elf_gnu_symbol_any | 1 << 2), | |
1780 | elf_gnu_symbol_all = (elf_gnu_symbol_ifunc | elf_gnu_symbol_unique) | |
1781 | }; | |
13a2df29 | 1782 | |
6a40cf0c NC |
1783 | typedef struct elf_section_list |
1784 | { | |
1785 | Elf_Internal_Shdr hdr; | |
1786 | unsigned int ndx; | |
1787 | struct elf_section_list * next; | |
1788 | } elf_section_list; | |
9eaff861 | 1789 | |
252b5132 RH |
1790 | /* Some private data is stashed away for future use using the tdata pointer |
1791 | in the bfd structure. */ | |
1792 | ||
1793 | struct elf_obj_tdata | |
1794 | { | |
1795 | Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */ | |
1796 | Elf_Internal_Shdr **elf_sect_ptr; | |
1797 | Elf_Internal_Phdr *phdr; | |
252b5132 RH |
1798 | Elf_Internal_Shdr symtab_hdr; |
1799 | Elf_Internal_Shdr shstrtab_hdr; | |
1800 | Elf_Internal_Shdr strtab_hdr; | |
1801 | Elf_Internal_Shdr dynsymtab_hdr; | |
1802 | Elf_Internal_Shdr dynstrtab_hdr; | |
1803 | Elf_Internal_Shdr dynversym_hdr; | |
1804 | Elf_Internal_Shdr dynverref_hdr; | |
1805 | Elf_Internal_Shdr dynverdef_hdr; | |
6a40cf0c | 1806 | elf_section_list * symtab_shndx_list; |
dbb410c3 AM |
1807 | bfd_vma gp; /* The gp value */ |
1808 | unsigned int gp_size; /* The gp size */ | |
c0355132 | 1809 | unsigned int num_elf_sections; /* elf_sect_ptr size */ |
dbb410c3 | 1810 | |
252b5132 RH |
1811 | /* A mapping from external symbols to entries in the linker hash |
1812 | table, used when linking. This is indexed by the symbol index | |
1813 | minus the sh_info field of the symbol table header. */ | |
1814 | struct elf_link_hash_entry **sym_hashes; | |
1815 | ||
5cab59f6 AM |
1816 | /* Track usage and final offsets of GOT entries for local symbols. |
1817 | This array is indexed by symbol index. Elements are used | |
1818 | identically to "got" in struct elf_link_hash_entry. */ | |
252b5132 RH |
1819 | union |
1820 | { | |
1821 | bfd_signed_vma *refcounts; | |
1822 | bfd_vma *offsets; | |
5cab59f6 | 1823 | struct got_entry **ents; |
252b5132 RH |
1824 | } local_got; |
1825 | ||
252b5132 RH |
1826 | /* The linker ELF emulation code needs to let the backend ELF linker |
1827 | know what filename should be used for a dynamic object if the | |
1828 | dynamic object is found using a search. The emulation code then | |
1829 | sometimes needs to know what name was actually used. Until the | |
1830 | file has been added to the linker symbol table, this field holds | |
1831 | the name the linker wants. After it has been added, it holds the | |
1832 | name actually used, which will be the DT_SONAME entry if there is | |
1833 | one. */ | |
1834 | const char *dt_name; | |
1835 | ||
7ee314fa | 1836 | /* The linker emulation needs to know what audit libs |
23209a78 | 1837 | are used by a dynamic object. */ |
7ee314fa AM |
1838 | const char *dt_audit; |
1839 | ||
252b5132 | 1840 | /* Used by find_nearest_line entry point. */ |
c39a58e6 | 1841 | void *line_info; |
252b5132 | 1842 | |
3e932841 | 1843 | /* A place to stash dwarf1 info for this bfd. */ |
252b5132 RH |
1844 | struct dwarf1_debug *dwarf1_find_line_info; |
1845 | ||
3e932841 | 1846 | /* A place to stash dwarf2 info for this bfd. */ |
c39a58e6 | 1847 | void *dwarf2_find_line_info; |
252b5132 | 1848 | |
619a703e AM |
1849 | /* Stash away info for yet another find line/function variant. */ |
1850 | void *elf_find_function_cache; | |
1851 | ||
252b5132 RH |
1852 | /* Number of symbol version definitions we are about to emit. */ |
1853 | unsigned int cverdefs; | |
1854 | ||
1855 | /* Number of symbol version references we are about to emit. */ | |
1856 | unsigned int cverrefs; | |
1857 | ||
1858 | /* Symbol version definitions in external objects. */ | |
1859 | Elf_Internal_Verdef *verdef; | |
1860 | ||
1861 | /* Symbol version references to external objects. */ | |
1862 | Elf_Internal_Verneed *verref; | |
1863 | ||
9d0a14d3 RS |
1864 | /* A pointer to the .eh_frame section. */ |
1865 | asection *eh_frame_section; | |
1866 | ||
c0f00686 | 1867 | /* Symbol buffer. */ |
c15f73f9 | 1868 | void *symbuf; |
104d59d1 | 1869 | |
46bed679 L |
1870 | /* List of GNU properties. Will be updated by setup_gnu_properties |
1871 | after all input GNU properties are merged for output. */ | |
1872 | elf_property_list *properties; | |
1873 | ||
104d59d1 JM |
1874 | obj_attribute known_obj_attributes[2][NUM_KNOWN_OBJ_ATTRIBUTES]; |
1875 | obj_attribute_list *other_obj_attributes[2]; | |
20a761b5 | 1876 | |
e21e5835 NC |
1877 | /* Linked-list containing information about every Systemtap section |
1878 | found in the object file. Each section corresponds to one entry | |
1879 | in the list. */ | |
1880 | struct sdt_note *sdt_note_head; | |
1881 | ||
c0355132 AM |
1882 | Elf_Internal_Shdr **group_sect_ptr; |
1883 | int num_group; | |
1884 | ||
6a40cf0c | 1885 | unsigned int symtab_section, dynsymtab_section; |
c0355132 | 1886 | unsigned int dynversym_section, dynverdef_section, dynverref_section; |
d8045f23 | 1887 | |
0ffa91dd NC |
1888 | /* An identifier used to distinguish different target |
1889 | specific extensions to this structure. */ | |
4dfe6ac6 | 1890 | enum elf_target_id object_id; |
228e534f | 1891 | |
c0355132 AM |
1892 | /* Whether a dyanmic object was specified normally on the linker |
1893 | command line, or was specified when --as-needed was in effect, | |
1894 | or was found via a DT_NEEDED entry. */ | |
1895 | enum dynamic_lib_link_class dyn_lib_class; | |
1896 | ||
1897 | /* Irix 5 often screws up the symbol table, sorting local symbols | |
1898 | after global symbols. This flag is set if the symbol table in | |
1899 | this BFD appears to be screwed up. If it is, we ignore the | |
1900 | sh_info field in the symbol table header, and always read all the | |
1901 | symbols. */ | |
1902 | bfd_boolean bad_symtab; | |
1903 | ||
13a2df29 | 1904 | enum elf_gnu_symbols has_gnu_symbols; |
c0355132 | 1905 | |
228e534f AM |
1906 | /* Information grabbed from an elf core file. */ |
1907 | struct core_elf_obj_tdata *core; | |
c0355132 AM |
1908 | |
1909 | /* More information held for output ELF BFDs. */ | |
1910 | struct output_elf_obj_tdata *o; | |
252b5132 RH |
1911 | }; |
1912 | ||
1913 | #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) | |
0ffa91dd NC |
1914 | |
1915 | #define elf_object_id(bfd) (elf_tdata(bfd) -> object_id) | |
c0355132 | 1916 | #define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size) |
252b5132 RH |
1917 | #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header) |
1918 | #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr) | |
9ad5cbcf | 1919 | #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections) |
c0355132 AM |
1920 | #define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map) |
1921 | #define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos) | |
1922 | #define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr) | |
1923 | #define elf_linker(bfd) (elf_tdata(bfd) -> o->linker) | |
1924 | #define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags) | |
1925 | #define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr) | |
252b5132 | 1926 | #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section) |
6a40cf0c | 1927 | #define elf_symtab_shndx_list(bfd) (elf_tdata(bfd) -> symtab_shndx_list) |
c0355132 AM |
1928 | #define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section) |
1929 | #define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section) | |
0ffa91dd | 1930 | #define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr) |
252b5132 RH |
1931 | #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section) |
1932 | #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section) | |
1933 | #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section) | |
1934 | #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section) | |
9d0a14d3 RS |
1935 | #define elf_eh_frame_section(bfd) \ |
1936 | (elf_tdata(bfd) -> eh_frame_section) | |
c0355132 AM |
1937 | #define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms) |
1938 | #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms) | |
252b5132 RH |
1939 | #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo) |
1940 | #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus) | |
1941 | #define elf_gp(bfd) (elf_tdata(bfd) -> gp) | |
1942 | #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size) | |
1943 | #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes) | |
1944 | #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts) | |
1945 | #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets) | |
5cab59f6 | 1946 | #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents) |
252b5132 | 1947 | #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name) |
7ee314fa | 1948 | #define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit) |
4a43e768 | 1949 | #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class) |
252b5132 | 1950 | #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab) |
c0355132 | 1951 | #define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init) |
104d59d1 JM |
1952 | #define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes) |
1953 | #define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes) | |
1954 | #define elf_known_obj_attributes_proc(bfd) \ | |
1955 | (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC]) | |
1956 | #define elf_other_obj_attributes_proc(bfd) \ | |
1957 | (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC]) | |
46bed679 | 1958 | #define elf_properties(bfd) (elf_tdata (bfd) -> properties) |
252b5132 RH |
1959 | \f |
1960 | extern void _bfd_elf_swap_verdef_in | |
c39a58e6 | 1961 | (bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *); |
252b5132 | 1962 | extern void _bfd_elf_swap_verdef_out |
c39a58e6 | 1963 | (bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *); |
252b5132 | 1964 | extern void _bfd_elf_swap_verdaux_in |
c39a58e6 | 1965 | (bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *); |
252b5132 | 1966 | extern void _bfd_elf_swap_verdaux_out |
c39a58e6 | 1967 | (bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *); |
252b5132 | 1968 | extern void _bfd_elf_swap_verneed_in |
c39a58e6 | 1969 | (bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *); |
252b5132 | 1970 | extern void _bfd_elf_swap_verneed_out |
c39a58e6 | 1971 | (bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *); |
252b5132 | 1972 | extern void _bfd_elf_swap_vernaux_in |
c39a58e6 | 1973 | (bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *); |
252b5132 | 1974 | extern void _bfd_elf_swap_vernaux_out |
c39a58e6 | 1975 | (bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *); |
252b5132 | 1976 | extern void _bfd_elf_swap_versym_in |
c39a58e6 | 1977 | (bfd *, const Elf_External_Versym *, Elf_Internal_Versym *); |
252b5132 | 1978 | extern void _bfd_elf_swap_versym_out |
c39a58e6 | 1979 | (bfd *, const Elf_Internal_Versym *, Elf_External_Versym *); |
252b5132 | 1980 | |
cb33740c | 1981 | extern unsigned int _bfd_elf_section_from_bfd_section |
c39a58e6 | 1982 | (bfd *, asection *); |
252b5132 | 1983 | extern char *bfd_elf_string_from_elf_section |
c39a58e6 | 1984 | (bfd *, unsigned, unsigned); |
6cdc0ccc | 1985 | extern Elf_Internal_Sym *bfd_elf_get_elf_syms |
c39a58e6 AM |
1986 | (bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *, |
1987 | Elf_External_Sym_Shndx *); | |
0e2cfdce | 1988 | extern const char *bfd_elf_sym_name |
26c61ae5 | 1989 | (bfd *, Elf_Internal_Shdr *, Elf_Internal_Sym *, asection *); |
252b5132 | 1990 | |
b34976b6 | 1991 | extern bfd_boolean _bfd_elf_copy_private_bfd_data |
c39a58e6 | 1992 | (bfd *, bfd *); |
b34976b6 | 1993 | extern bfd_boolean _bfd_elf_print_private_bfd_data |
c39a58e6 | 1994 | (bfd *, void *); |
60bb06bc | 1995 | const char * _bfd_elf_get_symbol_version_string |
bb4d2ac2 | 1996 | (bfd *, asymbol *, bfd_boolean *); |
dc810e39 | 1997 | extern void bfd_elf_print_symbol |
c39a58e6 | 1998 | (bfd *, void *, asymbol *, bfd_print_symbol_type); |
dc810e39 | 1999 | |
8c946ed5 | 2000 | extern unsigned int _bfd_elf_eh_frame_address_size |
76c20d54 | 2001 | (bfd *, const asection *); |
ec3391e7 AO |
2002 | extern bfd_byte _bfd_elf_encode_eh_address |
2003 | (bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset, | |
2004 | asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded); | |
2005 | extern bfd_boolean _bfd_elf_can_make_relative | |
2006 | (bfd *input_bfd, struct bfd_link_info *info, asection *eh_frame_section); | |
2007 | ||
dc810e39 | 2008 | extern enum elf_reloc_type_class _bfd_elf_reloc_type_class |
7e612e98 AM |
2009 | (const struct bfd_link_info *, const asection *, |
2010 | const Elf_Internal_Rela *); | |
f8df10f4 | 2011 | extern bfd_vma _bfd_elf_rela_local_sym |
8517fae7 | 2012 | (bfd *, Elf_Internal_Sym *, asection **, Elf_Internal_Rela *); |
c629eae0 | 2013 | extern bfd_vma _bfd_elf_rel_local_sym |
c39a58e6 | 2014 | (bfd *, Elf_Internal_Sym *, asection **, bfd_vma); |
c629eae0 | 2015 | extern bfd_vma _bfd_elf_section_offset |
c39a58e6 | 2016 | (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
db6751f2 | 2017 | |
dc810e39 | 2018 | extern unsigned long bfd_elf_hash |
c39a58e6 | 2019 | (const char *); |
fdc90cb4 JJ |
2020 | extern unsigned long bfd_elf_gnu_hash |
2021 | (const char *); | |
252b5132 | 2022 | |
dc810e39 | 2023 | extern bfd_reloc_status_type bfd_elf_generic_reloc |
c39a58e6 | 2024 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
0ffa91dd | 2025 | extern bfd_boolean bfd_elf_allocate_object |
4dfe6ac6 | 2026 | (bfd *, size_t, enum elf_target_id); |
ae95ffa6 | 2027 | extern bfd_boolean bfd_elf_make_object |
c39a58e6 | 2028 | (bfd *); |
b34976b6 | 2029 | extern bfd_boolean bfd_elf_mkcorefile |
c39a58e6 | 2030 | (bfd *); |
b34976b6 | 2031 | extern bfd_boolean _bfd_elf_make_section_from_shdr |
6dc132d9 | 2032 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
b34976b6 | 2033 | extern bfd_boolean _bfd_elf_make_section_from_phdr |
c39a58e6 | 2034 | (bfd *, Elf_Internal_Phdr *, int, const char *); |
252b5132 | 2035 | extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc |
c39a58e6 | 2036 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
252b5132 | 2037 | extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create |
c39a58e6 | 2038 | (bfd *); |
9f7c3e5e | 2039 | extern void _bfd_elf_link_hash_table_free |
d495ab0d | 2040 | (bfd *); |
c61b8717 | 2041 | extern void _bfd_elf_link_hash_copy_indirect |
fcfa13d2 | 2042 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
c39a58e6 | 2043 | struct elf_link_hash_entry *); |
c61b8717 | 2044 | extern void _bfd_elf_link_hash_hide_symbol |
c39a58e6 | 2045 | (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean); |
508c3946 L |
2046 | extern bfd_boolean _bfd_elf_link_hash_fixup_symbol |
2047 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
b34976b6 | 2048 | extern bfd_boolean _bfd_elf_link_hash_table_init |
c39a58e6 AM |
2049 | (struct elf_link_hash_table *, bfd *, |
2050 | struct bfd_hash_entry *(*) | |
66eb6687 | 2051 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *), |
4dfe6ac6 | 2052 | unsigned int, enum elf_target_id); |
b34976b6 | 2053 | extern bfd_boolean _bfd_elf_slurp_version_tables |
fc0e6df6 | 2054 | (bfd *, bfd_boolean); |
b34976b6 | 2055 | extern bfd_boolean _bfd_elf_merge_sections |
c39a58e6 | 2056 | (bfd *, struct bfd_link_info *); |
ecca9871 L |
2057 | extern bfd_boolean _bfd_elf_match_sections_by_type |
2058 | (bfd *, const asection *, bfd *, const asection *); | |
72adc230 AM |
2059 | extern bfd_boolean bfd_elf_is_group_section |
2060 | (bfd *, const struct bfd_section *); | |
43e1669b | 2061 | extern bfd_boolean _bfd_elf_section_already_linked |
c77ec726 | 2062 | (bfd *, asection *, struct bfd_link_info *); |
1126897b | 2063 | extern void bfd_elf_set_group_contents |
c39a58e6 | 2064 | (bfd *, asection *, void *); |
76359541 TP |
2065 | extern unsigned int _bfd_elf_filter_global_symbols |
2066 | (bfd *, struct bfd_link_info *, asymbol **, long); | |
01b3c8ab | 2067 | extern asection *_bfd_elf_check_kept_section |
c0f00686 | 2068 | (asection *, struct bfd_link_info *); |
dbaa2011 | 2069 | #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms |
1338dd10 PB |
2070 | extern void _bfd_elf_copy_link_hash_symbol_type |
2071 | (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *); | |
d0bf826b AM |
2072 | extern bfd_boolean _bfd_elf_size_group_sections |
2073 | (struct bfd_link_info *); | |
2074 | extern bfd_boolean _bfd_elf_fixup_group_sections | |
2075 | (bfd *, asection *); | |
80fccad2 BW |
2076 | extern bfd_boolean _bfd_elf_copy_private_header_data |
2077 | (bfd *, bfd *); | |
b34976b6 | 2078 | extern bfd_boolean _bfd_elf_copy_private_symbol_data |
c39a58e6 | 2079 | (bfd *, asymbol *, bfd *, asymbol *); |
ccd2ec6a L |
2080 | #define _bfd_generic_init_private_section_data \ |
2081 | _bfd_elf_init_private_section_data | |
2082 | extern bfd_boolean _bfd_elf_init_private_section_data | |
2083 | (bfd *, asection *, bfd *, asection *, struct bfd_link_info *); | |
b34976b6 | 2084 | extern bfd_boolean _bfd_elf_copy_private_section_data |
c39a58e6 | 2085 | (bfd *, asection *, bfd *, asection *); |
b34976b6 | 2086 | extern bfd_boolean _bfd_elf_write_object_contents |
c39a58e6 | 2087 | (bfd *); |
b34976b6 | 2088 | extern bfd_boolean _bfd_elf_write_corefile_contents |
c39a58e6 | 2089 | (bfd *); |
b34976b6 | 2090 | extern bfd_boolean _bfd_elf_set_section_contents |
0f867abe | 2091 | (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type); |
dc810e39 | 2092 | extern long _bfd_elf_get_symtab_upper_bound |
c39a58e6 | 2093 | (bfd *); |
6cee3f79 | 2094 | extern long _bfd_elf_canonicalize_symtab |
c39a58e6 | 2095 | (bfd *, asymbol **); |
dc810e39 | 2096 | extern long _bfd_elf_get_dynamic_symtab_upper_bound |
c39a58e6 | 2097 | (bfd *); |
dc810e39 | 2098 | extern long _bfd_elf_canonicalize_dynamic_symtab |
c39a58e6 | 2099 | (bfd *, asymbol **); |
4c45e5c9 | 2100 | extern long _bfd_elf_get_synthetic_symtab |
c9727e01 | 2101 | (bfd *, long, asymbol **, long, asymbol **, asymbol **); |
dc810e39 | 2102 | extern long _bfd_elf_get_reloc_upper_bound |
c39a58e6 | 2103 | (bfd *, sec_ptr); |
dc810e39 | 2104 | extern long _bfd_elf_canonicalize_reloc |
c39a58e6 | 2105 | (bfd *, sec_ptr, arelent **, asymbol **); |
83bac4b0 NC |
2106 | extern asection * _bfd_elf_get_dynamic_reloc_section |
2107 | (bfd *, asection *, bfd_boolean); | |
2108 | extern asection * _bfd_elf_make_dynamic_reloc_section | |
2109 | (asection *, bfd *, unsigned int, bfd *, bfd_boolean); | |
dc810e39 | 2110 | extern long _bfd_elf_get_dynamic_reloc_upper_bound |
c39a58e6 | 2111 | (bfd *); |
dc810e39 | 2112 | extern long _bfd_elf_canonicalize_dynamic_reloc |
c39a58e6 | 2113 | (bfd *, arelent **, asymbol **); |
dc810e39 | 2114 | extern asymbol *_bfd_elf_make_empty_symbol |
c39a58e6 | 2115 | (bfd *); |
dc810e39 | 2116 | extern void _bfd_elf_get_symbol_info |
c39a58e6 | 2117 | (bfd *, asymbol *, symbol_info *); |
b34976b6 | 2118 | extern bfd_boolean _bfd_elf_is_local_label_name |
c39a58e6 | 2119 | (bfd *, const char *); |
dc810e39 | 2120 | extern alent *_bfd_elf_get_lineno |
c39a58e6 | 2121 | (bfd *, asymbol *); |
b34976b6 | 2122 | extern bfd_boolean _bfd_elf_set_arch_mach |
c39a58e6 | 2123 | (bfd *, enum bfd_architecture, unsigned long); |
b34976b6 | 2124 | extern bfd_boolean _bfd_elf_find_nearest_line |
fb167eb2 AM |
2125 | (bfd *, asymbol **, asection *, bfd_vma, |
2126 | const char **, const char **, unsigned int *, unsigned int *); | |
5420f73d L |
2127 | extern bfd_boolean _bfd_elf_find_line |
2128 | (bfd *, asymbol **, asymbol *, const char **, unsigned int *); | |
4ab527b0 FF |
2129 | extern bfd_boolean _bfd_elf_find_inliner_info |
2130 | (bfd *, const char **, const char **, unsigned int *); | |
923b198a | 2131 | extern asymbol *_bfd_elf_find_function |
e00e8198 | 2132 | (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **); |
252b5132 RH |
2133 | #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols |
2134 | #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol | |
dc810e39 | 2135 | extern int _bfd_elf_sizeof_headers |
a6b96beb | 2136 | (bfd *, struct bfd_link_info *); |
b34976b6 | 2137 | extern bfd_boolean _bfd_elf_new_section_hook |
c39a58e6 | 2138 | (bfd *, asection *); |
551b43fd AM |
2139 | extern const struct bfd_elf_special_section *_bfd_elf_get_special_section |
2140 | (const char *, const struct bfd_elf_special_section *, unsigned int); | |
7dcb9820 | 2141 | extern const struct bfd_elf_special_section *_bfd_elf_get_sec_type_attr |
551b43fd | 2142 | (bfd *, asection *); |
252b5132 RH |
2143 | |
2144 | /* If the target doesn't have reloc handling written yet: */ | |
dc810e39 | 2145 | extern void _bfd_elf_no_info_to_howto |
c39a58e6 | 2146 | (bfd *, arelent *, Elf_Internal_Rela *); |
dc810e39 | 2147 | |
b34976b6 | 2148 | extern bfd_boolean bfd_section_from_shdr |
c39a58e6 | 2149 | (bfd *, unsigned int shindex); |
b34976b6 | 2150 | extern bfd_boolean bfd_section_from_phdr |
c39a58e6 | 2151 | (bfd *, Elf_Internal_Phdr *, int); |
dc810e39 AM |
2152 | |
2153 | extern int _bfd_elf_symbol_from_bfd_symbol | |
c39a58e6 | 2154 | (bfd *, asymbol **); |
dc810e39 | 2155 | |
23209a78 | 2156 | extern Elf_Internal_Sym *bfd_sym_from_r_symndx |
87d72d41 | 2157 | (struct sym_cache *, bfd *, unsigned long); |
dc810e39 | 2158 | extern asection *bfd_section_from_elf_index |
c39a58e6 | 2159 | (bfd *, unsigned int); |
2b0f7ef9 JJ |
2160 | |
2161 | extern struct elf_strtab_hash * _bfd_elf_strtab_init | |
c39a58e6 | 2162 | (void); |
2b0f7ef9 | 2163 | extern void _bfd_elf_strtab_free |
c39a58e6 | 2164 | (struct elf_strtab_hash *); |
ef53be89 | 2165 | extern size_t _bfd_elf_strtab_add |
c39a58e6 | 2166 | (struct elf_strtab_hash *, const char *, bfd_boolean); |
2b0f7ef9 | 2167 | extern void _bfd_elf_strtab_addref |
ef53be89 | 2168 | (struct elf_strtab_hash *, size_t); |
2b0f7ef9 | 2169 | extern void _bfd_elf_strtab_delref |
ef53be89 | 2170 | (struct elf_strtab_hash *, size_t); |
02be4619 | 2171 | extern unsigned int _bfd_elf_strtab_refcount |
ef53be89 | 2172 | (struct elf_strtab_hash *, size_t); |
d45f8bda | 2173 | extern void _bfd_elf_strtab_clear_all_refs |
5b677558 AM |
2174 | (struct elf_strtab_hash *); |
2175 | extern void *_bfd_elf_strtab_save | |
2176 | (struct elf_strtab_hash *); | |
2177 | extern void _bfd_elf_strtab_restore | |
2178 | (struct elf_strtab_hash *, void *); | |
2b0f7ef9 | 2179 | extern bfd_size_type _bfd_elf_strtab_size |
c39a58e6 | 2180 | (struct elf_strtab_hash *); |
2b0f7ef9 | 2181 | extern bfd_size_type _bfd_elf_strtab_offset |
ef53be89 | 2182 | (struct elf_strtab_hash *, size_t); |
b34976b6 | 2183 | extern bfd_boolean _bfd_elf_strtab_emit |
c39a58e6 | 2184 | (bfd *, struct elf_strtab_hash *); |
2b0f7ef9 | 2185 | extern void _bfd_elf_strtab_finalize |
c39a58e6 | 2186 | (struct elf_strtab_hash *); |
2b0f7ef9 | 2187 | |
2f0c68f2 CM |
2188 | extern bfd_boolean bfd_elf_parse_eh_frame_entries |
2189 | (bfd *, struct bfd_link_info *); | |
2190 | extern bfd_boolean _bfd_elf_parse_eh_frame_entry | |
2191 | (struct bfd_link_info *, asection *, struct elf_reloc_cookie *); | |
ca92cecb RS |
2192 | extern void _bfd_elf_parse_eh_frame |
2193 | (bfd *, struct bfd_link_info *, asection *, struct elf_reloc_cookie *); | |
2f0c68f2 CM |
2194 | extern bfd_boolean _bfd_elf_end_eh_frame_parsing |
2195 | (struct bfd_link_info *info); | |
2196 | ||
b34976b6 | 2197 | extern bfd_boolean _bfd_elf_discard_section_eh_frame |
c39a58e6 AM |
2198 | (bfd *, struct bfd_link_info *, asection *, |
2199 | bfd_boolean (*) (bfd_vma, void *), struct elf_reloc_cookie *); | |
d7153c4a AM |
2200 | extern bfd_boolean _bfd_elf_adjust_eh_frame_global_symbol |
2201 | (struct elf_link_hash_entry *, void *); | |
b34976b6 | 2202 | extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr |
c39a58e6 | 2203 | (bfd *, struct bfd_link_info *); |
65765700 | 2204 | extern bfd_vma _bfd_elf_eh_frame_section_offset |
92e4ec35 | 2205 | (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
b34976b6 | 2206 | extern bfd_boolean _bfd_elf_write_section_eh_frame |
c39a58e6 | 2207 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
2f0c68f2 CM |
2208 | bfd_boolean _bfd_elf_write_section_eh_frame_entry |
2209 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); | |
2210 | extern bfd_boolean _bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info *); | |
b34976b6 | 2211 | extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr |
c39a58e6 | 2212 | (bfd *, struct bfd_link_info *); |
9a2a56cc AM |
2213 | extern bfd_boolean _bfd_elf_eh_frame_present |
2214 | (struct bfd_link_info *); | |
2f0c68f2 CM |
2215 | extern bfd_boolean _bfd_elf_eh_frame_entry_present |
2216 | (struct bfd_link_info *); | |
b34976b6 | 2217 | extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr |
c39a58e6 | 2218 | (struct bfd_link_info *); |
65765700 | 2219 | |
fdc90cb4 JJ |
2220 | extern bfd_boolean _bfd_elf_hash_symbol (struct elf_link_hash_entry *); |
2221 | ||
dc810e39 | 2222 | extern long _bfd_elf_link_lookup_local_dynindx |
c39a58e6 | 2223 | (struct bfd_link_info *, bfd *, long); |
b34976b6 | 2224 | extern bfd_boolean _bfd_elf_compute_section_file_positions |
c39a58e6 | 2225 | (bfd *, struct bfd_link_info *); |
dc810e39 | 2226 | extern file_ptr _bfd_elf_assign_file_position_for_section |
c39a58e6 | 2227 | (Elf_Internal_Shdr *, file_ptr, bfd_boolean); |
dc810e39 | 2228 | |
b34976b6 | 2229 | extern bfd_boolean _bfd_elf_validate_reloc |
c39a58e6 | 2230 | (bfd *, arelent *); |
dc810e39 | 2231 | |
45d6a902 | 2232 | extern bfd_boolean _bfd_elf_link_create_dynamic_sections |
c39a58e6 | 2233 | (bfd *, struct bfd_link_info *); |
aee6f5b4 AO |
2234 | extern bfd_boolean _bfd_elf_link_omit_section_dynsym |
2235 | (bfd *, struct bfd_link_info *, asection *); | |
b34976b6 | 2236 | extern bfd_boolean _bfd_elf_create_dynamic_sections |
c39a58e6 | 2237 | (bfd *, struct bfd_link_info *); |
b34976b6 | 2238 | extern bfd_boolean _bfd_elf_create_got_section |
c39a58e6 | 2239 | (bfd *, struct bfd_link_info *); |
2f0c68f2 CM |
2240 | extern asection *_bfd_elf_section_for_symbol |
2241 | (struct elf_reloc_cookie *, unsigned long, bfd_boolean); | |
d98685ac AM |
2242 | extern struct elf_link_hash_entry *_bfd_elf_define_linkage_sym |
2243 | (bfd *, struct bfd_link_info *, asection *, const char *); | |
74541ad4 AM |
2244 | extern void _bfd_elf_init_1_index_section |
2245 | (bfd *, struct bfd_link_info *); | |
2246 | extern void _bfd_elf_init_2_index_sections | |
2247 | (bfd *, struct bfd_link_info *); | |
dc810e39 | 2248 | |
b34976b6 | 2249 | extern bfd_boolean _bfd_elfcore_make_pseudosection |
c39a58e6 | 2250 | (bfd *, char *, size_t, ufile_ptr); |
dc810e39 | 2251 | extern char *_bfd_elfcore_strndup |
c39a58e6 | 2252 | (bfd *, char *, size_t); |
dc810e39 | 2253 | |
45d6a902 | 2254 | extern Elf_Internal_Rela *_bfd_elf_link_read_relocs |
c39a58e6 | 2255 | (bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean); |
45d6a902 | 2256 | |
45d6a902 | 2257 | extern bfd_boolean _bfd_elf_link_output_relocs |
eac338cf PB |
2258 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, |
2259 | struct elf_link_hash_entry **); | |
45d6a902 | 2260 | |
027297b7 | 2261 | extern bfd_boolean _bfd_elf_adjust_dynamic_copy |
6cabe1ea | 2262 | (struct bfd_link_info *, struct elf_link_hash_entry *, asection *); |
027297b7 | 2263 | |
986a241f | 2264 | extern bfd_boolean _bfd_elf_dynamic_symbol_p |
c39a58e6 | 2265 | (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean); |
f6c52c13 AM |
2266 | |
2267 | extern bfd_boolean _bfd_elf_symbol_refs_local_p | |
c39a58e6 | 2268 | (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean); |
986a241f | 2269 | |
cdfeee4f | 2270 | extern bfd_reloc_status_type bfd_elf_perform_complex_relocation |
0f02bbd9 | 2271 | (bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma); |
d9352518 | 2272 | |
dd863624 | 2273 | extern bfd_boolean _bfd_elf_setup_sections |
3d7f7666 L |
2274 | (bfd *); |
2275 | ||
7dba9362 AM |
2276 | extern struct bfd_link_hash_entry *bfd_elf_define_start_stop |
2277 | (struct bfd_link_info *, const char *, asection *); | |
2278 | ||
78245035 | 2279 | extern void _bfd_elf_post_process_headers (bfd * , struct bfd_link_info *); |
d1036acb | 2280 | |
dc810e39 | 2281 | extern const bfd_target *bfd_elf32_object_p |
c39a58e6 | 2282 | (bfd *); |
dc810e39 | 2283 | extern const bfd_target *bfd_elf32_core_file_p |
c39a58e6 | 2284 | (bfd *); |
dc810e39 | 2285 | extern char *bfd_elf32_core_file_failing_command |
c39a58e6 | 2286 | (bfd *); |
dc810e39 | 2287 | extern int bfd_elf32_core_file_failing_signal |
c39a58e6 | 2288 | (bfd *); |
b34976b6 | 2289 | extern bfd_boolean bfd_elf32_core_file_matches_executable_p |
c39a58e6 | 2290 | (bfd *, bfd *); |
261b8d08 PA |
2291 | extern int bfd_elf32_core_file_pid |
2292 | (bfd *); | |
252b5132 | 2293 | |
8384fb8f | 2294 | extern bfd_boolean bfd_elf32_swap_symbol_in |
c39a58e6 | 2295 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
252b5132 | 2296 | extern void bfd_elf32_swap_symbol_out |
c39a58e6 | 2297 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
252b5132 | 2298 | extern void bfd_elf32_swap_reloc_in |
c39a58e6 | 2299 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2300 | extern void bfd_elf32_swap_reloc_out |
c39a58e6 | 2301 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2302 | extern void bfd_elf32_swap_reloca_in |
c39a58e6 | 2303 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2304 | extern void bfd_elf32_swap_reloca_out |
c39a58e6 | 2305 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2306 | extern void bfd_elf32_swap_phdr_in |
c39a58e6 | 2307 | (bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *); |
252b5132 | 2308 | extern void bfd_elf32_swap_phdr_out |
c39a58e6 | 2309 | (bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *); |
252b5132 | 2310 | extern void bfd_elf32_swap_dyn_in |
c39a58e6 | 2311 | (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 | 2312 | extern void bfd_elf32_swap_dyn_out |
c39a58e6 | 2313 | (bfd *, const Elf_Internal_Dyn *, void *); |
252b5132 | 2314 | extern long bfd_elf32_slurp_symbol_table |
c39a58e6 | 2315 | (bfd *, asymbol **, bfd_boolean); |
b34976b6 | 2316 | extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr |
c39a58e6 | 2317 | (bfd *); |
252b5132 | 2318 | extern int bfd_elf32_write_out_phdrs |
c39a58e6 | 2319 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
20a761b5 RM |
2320 | extern bfd_boolean bfd_elf32_checksum_contents |
2321 | (bfd * , void (*) (const void *, size_t, void *), void *); | |
b9f66672 | 2322 | extern void bfd_elf32_write_relocs |
c39a58e6 | 2323 | (bfd *, asection *, void *); |
b34976b6 | 2324 | extern bfd_boolean bfd_elf32_slurp_reloc_table |
c39a58e6 | 2325 | (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 | 2326 | |
dc810e39 | 2327 | extern const bfd_target *bfd_elf64_object_p |
c39a58e6 | 2328 | (bfd *); |
dc810e39 | 2329 | extern const bfd_target *bfd_elf64_core_file_p |
c39a58e6 | 2330 | (bfd *); |
dc810e39 | 2331 | extern char *bfd_elf64_core_file_failing_command |
c39a58e6 | 2332 | (bfd *); |
dc810e39 | 2333 | extern int bfd_elf64_core_file_failing_signal |
c39a58e6 | 2334 | (bfd *); |
b34976b6 | 2335 | extern bfd_boolean bfd_elf64_core_file_matches_executable_p |
c39a58e6 | 2336 | (bfd *, bfd *); |
261b8d08 PA |
2337 | extern int bfd_elf64_core_file_pid |
2338 | (bfd *); | |
252b5132 | 2339 | |
8384fb8f | 2340 | extern bfd_boolean bfd_elf64_swap_symbol_in |
c39a58e6 | 2341 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
252b5132 | 2342 | extern void bfd_elf64_swap_symbol_out |
c39a58e6 | 2343 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
252b5132 | 2344 | extern void bfd_elf64_swap_reloc_in |
c39a58e6 | 2345 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2346 | extern void bfd_elf64_swap_reloc_out |
c39a58e6 | 2347 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2348 | extern void bfd_elf64_swap_reloca_in |
c39a58e6 | 2349 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2350 | extern void bfd_elf64_swap_reloca_out |
c39a58e6 | 2351 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2352 | extern void bfd_elf64_swap_phdr_in |
c39a58e6 | 2353 | (bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *); |
252b5132 | 2354 | extern void bfd_elf64_swap_phdr_out |
c39a58e6 | 2355 | (bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *); |
252b5132 | 2356 | extern void bfd_elf64_swap_dyn_in |
c39a58e6 | 2357 | (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 | 2358 | extern void bfd_elf64_swap_dyn_out |
c39a58e6 | 2359 | (bfd *, const Elf_Internal_Dyn *, void *); |
252b5132 | 2360 | extern long bfd_elf64_slurp_symbol_table |
c39a58e6 | 2361 | (bfd *, asymbol **, bfd_boolean); |
b34976b6 | 2362 | extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr |
c39a58e6 | 2363 | (bfd *); |
252b5132 | 2364 | extern int bfd_elf64_write_out_phdrs |
c39a58e6 | 2365 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
20a761b5 RM |
2366 | extern bfd_boolean bfd_elf64_checksum_contents |
2367 | (bfd * , void (*) (const void *, size_t, void *), void *); | |
b9f66672 | 2368 | extern void bfd_elf64_write_relocs |
c39a58e6 | 2369 | (bfd *, asection *, void *); |
b34976b6 | 2370 | extern bfd_boolean bfd_elf64_slurp_reloc_table |
c39a58e6 | 2371 | (bfd *, asection *, asymbol **, bfd_boolean); |
5a580b3a | 2372 | |
13285a1b AM |
2373 | extern bfd_boolean _bfd_elf_default_relocs_compatible |
2374 | (const bfd_target *, const bfd_target *); | |
2375 | ||
2376 | extern bfd_boolean _bfd_elf_relocs_compatible | |
2377 | (const bfd_target *, const bfd_target *); | |
e5034e59 AM |
2378 | extern bfd_boolean _bfd_elf_notice_as_needed |
2379 | (bfd *, struct bfd_link_info *, enum notice_asneeded_action); | |
13285a1b | 2380 | |
8387904d AM |
2381 | extern struct elf_link_hash_entry *_bfd_elf_archive_symbol_lookup |
2382 | (bfd *, struct bfd_link_info *, const char *); | |
4ad4eba5 AM |
2383 | extern bfd_boolean bfd_elf_link_add_symbols |
2384 | (bfd *, struct bfd_link_info *); | |
5a580b3a | 2385 | extern bfd_boolean _bfd_elf_add_dynamic_entry |
c39a58e6 | 2386 | (struct bfd_link_info *, bfd_vma, bfd_vma); |
d9689752 L |
2387 | extern bfd_boolean _bfd_elf_link_check_relocs |
2388 | (bfd *, struct bfd_link_info *); | |
252b5132 | 2389 | |
c152c796 AM |
2390 | extern bfd_boolean bfd_elf_link_record_dynamic_symbol |
2391 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
30b30c21 | 2392 | |
c152c796 | 2393 | extern int bfd_elf_link_record_local_dynamic_symbol |
c39a58e6 | 2394 | (struct bfd_link_info *, bfd *, long); |
252b5132 | 2395 | |
b34976b6 | 2396 | extern bfd_boolean _bfd_elf_close_and_cleanup |
c39a58e6 | 2397 | (bfd *); |
35330cce | 2398 | |
a4d8e49b L |
2399 | extern bfd_boolean _bfd_elf_common_definition |
2400 | (Elf_Internal_Sym *); | |
2401 | ||
2402 | extern unsigned int _bfd_elf_common_section_index | |
2403 | (asection *); | |
2404 | ||
2405 | extern asection *_bfd_elf_common_section | |
2406 | (asection *); | |
2407 | ||
10455f89 HPN |
2408 | extern bfd_vma _bfd_elf_default_got_elt_size |
2409 | (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, bfd *, | |
2410 | unsigned long); | |
2411 | ||
252b5132 | 2412 | extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn |
fc0a2244 | 2413 | (bfd *, arelent *, struct bfd_symbol *, void *, |
c39a58e6 | 2414 | asection *, bfd *, char **); |
252b5132 | 2415 | |
c152c796 | 2416 | extern bfd_boolean bfd_elf_final_link |
c39a58e6 | 2417 | (bfd *, struct bfd_link_info *); |
c152c796 | 2418 | |
74f0fb50 AM |
2419 | extern void _bfd_elf_gc_keep |
2420 | (struct bfd_link_info *info); | |
2421 | ||
64d03ab5 AM |
2422 | extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol |
2423 | (struct elf_link_hash_entry *h, void *inf); | |
2424 | ||
c152c796 | 2425 | extern bfd_boolean bfd_elf_gc_sections |
c39a58e6 | 2426 | (bfd *, struct bfd_link_info *); |
c152c796 AM |
2427 | |
2428 | extern bfd_boolean bfd_elf_gc_record_vtinherit | |
c39a58e6 | 2429 | (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
c152c796 AM |
2430 | |
2431 | extern bfd_boolean bfd_elf_gc_record_vtentry | |
c39a58e6 | 2432 | (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
252b5132 | 2433 | |
07adf181 AM |
2434 | extern asection *_bfd_elf_gc_mark_hook |
2435 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | |
2436 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
2437 | ||
5241d853 RS |
2438 | extern asection *_bfd_elf_gc_mark_rsec |
2439 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn, | |
1cce69b9 | 2440 | struct elf_reloc_cookie *, bfd_boolean *); |
5241d853 RS |
2441 | |
2442 | extern bfd_boolean _bfd_elf_gc_mark_reloc | |
2443 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn, | |
9d0a14d3 RS |
2444 | struct elf_reloc_cookie *); |
2445 | ||
2446 | extern bfd_boolean _bfd_elf_gc_mark_fdes | |
2447 | (struct bfd_link_info *, asection *, asection *, elf_gc_mark_hook_fn, | |
2448 | struct elf_reloc_cookie *); | |
5241d853 | 2449 | |
ccfa59ea | 2450 | extern bfd_boolean _bfd_elf_gc_mark |
5241d853 | 2451 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn); |
ccfa59ea | 2452 | |
7f6ab9f8 AM |
2453 | extern bfd_boolean _bfd_elf_gc_mark_extra_sections |
2454 | (struct bfd_link_info *, elf_gc_mark_hook_fn); | |
2455 | ||
c152c796 | 2456 | extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets |
c39a58e6 | 2457 | (bfd *, struct bfd_link_info *); |
c152c796 AM |
2458 | |
2459 | extern bfd_boolean bfd_elf_gc_common_final_link | |
c39a58e6 | 2460 | (bfd *, struct bfd_link_info *); |
252b5132 | 2461 | |
c152c796 | 2462 | extern bfd_boolean bfd_elf_reloc_symbol_deleted_p |
c39a58e6 | 2463 | (bfd_vma, void *); |
73d074b4 | 2464 | |
8ded5a0f | 2465 | extern struct elf_segment_map * _bfd_elf_make_dynamic_segment |
229fcec5 MM |
2466 | (bfd *, asection *); |
2467 | ||
8ded5a0f AM |
2468 | extern bfd_boolean _bfd_elf_map_sections_to_segments |
2469 | (bfd *, struct bfd_link_info *); | |
2470 | ||
fcb93ecf PB |
2471 | extern bfd_boolean _bfd_elf_is_function_type (unsigned int); |
2472 | ||
aef36ac1 AM |
2473 | extern bfd_size_type _bfd_elf_maybe_function_sym (const asymbol *, asection *, |
2474 | bfd_vma *); | |
9f296da3 | 2475 | |
bce964aa | 2476 | extern asection *_bfd_elf_plt_get_reloc_section (bfd *, const char *); |
bd53a53a | 2477 | |
94be91de JB |
2478 | extern int bfd_elf_get_default_section_type (flagword); |
2479 | ||
b9c361e0 JL |
2480 | extern bfd_boolean bfd_elf_lookup_section_flags |
2481 | (struct bfd_link_info *, struct flag_info *, asection *); | |
ae17ab41 | 2482 | |
2ea37f1c NC |
2483 | extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section |
2484 | (bfd * abfd, asection * section); | |
2485 | ||
14b57c7c AM |
2486 | /* PowerPC @tls opcode transform/validate. */ |
2487 | extern unsigned int _bfd_elf_ppc_at_tls_transform | |
2488 | (unsigned int, unsigned int); | |
2489 | /* PowerPC @tprel opcode transform/validate. */ | |
2490 | extern unsigned int _bfd_elf_ppc_at_tprel_transform | |
2491 | (unsigned int, unsigned int); | |
2492 | /* PowerPC elf_object_p tweak. */ | |
2493 | extern bfd_boolean _bfd_elf_ppc_set_arch (bfd *); | |
005d79fd | 2494 | /* PowerPC .gnu.attributes handling common to both 32-bit and 64-bit. */ |
50e03d47 | 2495 | extern void _bfd_elf_ppc_merge_fp_attributes (bfd *, struct bfd_link_info *); |
14b57c7c | 2496 | |
9eaff861 | 2497 | /* Exported interface for writing elf corefile notes. */ |
d4c88bbb | 2498 | extern char *elfcore_write_note |
c39a58e6 | 2499 | (bfd *, char *, int *, const char *, int, const void *, int); |
d4c88bbb | 2500 | extern char *elfcore_write_prpsinfo |
c39a58e6 | 2501 | (bfd *, char *, int *, const char *, const char *); |
d4c88bbb | 2502 | extern char *elfcore_write_prstatus |
c39a58e6 | 2503 | (bfd *, char *, int *, long, int, const void *); |
d4c88bbb | 2504 | extern char * elfcore_write_pstatus |
c39a58e6 | 2505 | (bfd *, char *, int *, long, int, const void *); |
d4c88bbb | 2506 | extern char *elfcore_write_prfpreg |
c39a58e6 | 2507 | (bfd *, char *, int *, const void *, int); |
d4c88bbb | 2508 | extern char *elfcore_write_prxfpreg |
c39a58e6 | 2509 | (bfd *, char *, int *, const void *, int); |
4339cae0 L |
2510 | extern char *elfcore_write_xstatereg |
2511 | (bfd *, char *, int *, const void *, int); | |
97753bd5 AM |
2512 | extern char *elfcore_write_ppc_vmx |
2513 | (bfd *, char *, int *, const void *, int); | |
89eeb0bc LM |
2514 | extern char *elfcore_write_ppc_vsx |
2515 | (bfd *, char *, int *, const void *, int); | |
d7eeb400 MS |
2516 | extern char *elfcore_write_s390_timer |
2517 | (bfd *, char *, int *, const void *, int); | |
2518 | extern char *elfcore_write_s390_todcmp | |
2519 | (bfd *, char *, int *, const void *, int); | |
2520 | extern char *elfcore_write_s390_todpreg | |
2521 | (bfd *, char *, int *, const void *, int); | |
2522 | extern char *elfcore_write_s390_ctrs | |
2523 | (bfd *, char *, int *, const void *, int); | |
2524 | extern char *elfcore_write_s390_prefix | |
2525 | (bfd *, char *, int *, const void *, int); | |
355b81d9 UW |
2526 | extern char *elfcore_write_s390_last_break |
2527 | (bfd *, char *, int *, const void *, int); | |
2528 | extern char *elfcore_write_s390_system_call | |
2529 | (bfd *, char *, int *, const void *, int); | |
abb3f6cc NC |
2530 | extern char *elfcore_write_s390_tdb |
2531 | (bfd *, char *, int *, const void *, int); | |
4ef9f41a AA |
2532 | extern char *elfcore_write_s390_vxrs_low |
2533 | (bfd *, char *, int *, const void *, int); | |
2534 | extern char *elfcore_write_s390_vxrs_high | |
2535 | (bfd *, char *, int *, const void *, int); | |
faa9a424 UW |
2536 | extern char *elfcore_write_arm_vfp |
2537 | (bfd *, char *, int *, const void *, int); | |
652451f8 YZ |
2538 | extern char *elfcore_write_aarch_tls |
2539 | (bfd *, char *, int *, const void *, int); | |
2540 | extern char *elfcore_write_aarch_hw_break | |
2541 | (bfd *, char *, int *, const void *, int); | |
2542 | extern char *elfcore_write_aarch_hw_watch | |
2543 | (bfd *, char *, int *, const void *, int); | |
d4c88bbb | 2544 | extern char *elfcore_write_lwpstatus |
c39a58e6 | 2545 | (bfd *, char *, int *, long, int, const void *); |
bb864ac1 CES |
2546 | extern char *elfcore_write_register_note |
2547 | (bfd *, char *, int *, const char *, const void *, int); | |
7c76fa91 | 2548 | |
70a38d42 SDJ |
2549 | /* Internal structure which holds information to be included in the |
2550 | PRPSINFO section of Linux core files. | |
2551 | ||
2552 | This is an "internal" structure in the sense that it should be used | |
2553 | to pass information to BFD (via the `elfcore_write_linux_prpsinfo' | |
2554 | function), so things like endianess shouldn't be an issue. This | |
2555 | structure will eventually be converted in one of the | |
2556 | `elf_external_linux_*' structures and written out to an output bfd | |
2557 | by one of the functions declared below. */ | |
2558 | ||
2559 | struct elf_internal_linux_prpsinfo | |
2560 | { | |
2561 | char pr_state; /* Numeric process state. */ | |
2562 | char pr_sname; /* Char for pr_state. */ | |
2563 | char pr_zomb; /* Zombie. */ | |
2564 | char pr_nice; /* Nice val. */ | |
2565 | unsigned long pr_flag; /* Flags. */ | |
2566 | unsigned int pr_uid; | |
2567 | unsigned int pr_gid; | |
2568 | int pr_pid, pr_ppid, pr_pgrp, pr_sid; | |
2569 | char pr_fname[16 + 1]; /* Filename of executable. */ | |
2570 | char pr_psargs[80 + 1]; /* Initial part of arg list. */ | |
2571 | }; | |
2572 | ||
2573 | /* Linux/most 32-bit archs. */ | |
2574 | extern char *elfcore_write_linux_prpsinfo32 | |
2575 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); | |
2576 | ||
2577 | /* Linux/most 64-bit archs. */ | |
2578 | extern char *elfcore_write_linux_prpsinfo64 | |
2579 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); | |
2580 | ||
2581 | /* Linux/PPC32 uses different layout compared to most archs. */ | |
2582 | extern char *elfcore_write_ppc_linux_prpsinfo32 | |
2583 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); | |
2584 | ||
8d6337fe | 2585 | extern bfd *_bfd_elf32_bfd_from_remote_memory |
f0a5d95a | 2586 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
fe78531d | 2587 | int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)); |
8d6337fe | 2588 | extern bfd *_bfd_elf64_bfd_from_remote_memory |
f0a5d95a | 2589 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
fe78531d | 2590 | int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)); |
8d6337fe | 2591 | |
104d59d1 JM |
2592 | extern bfd_vma bfd_elf_obj_attr_size (bfd *); |
2593 | extern void bfd_elf_set_obj_attr_contents (bfd *, bfd_byte *, bfd_vma); | |
5ee4a1ca NC |
2594 | extern int bfd_elf_get_obj_attr_int (bfd *, int, unsigned int); |
2595 | extern void bfd_elf_add_obj_attr_int (bfd *, int, unsigned int, unsigned int); | |
104d59d1 JM |
2596 | #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \ |
2597 | bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE)) | |
5ee4a1ca | 2598 | extern void bfd_elf_add_obj_attr_string (bfd *, int, unsigned int, const char *); |
104d59d1 JM |
2599 | #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \ |
2600 | bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE)) | |
5ee4a1ca NC |
2601 | extern void bfd_elf_add_obj_attr_int_string (bfd *, int, unsigned int, |
2602 | unsigned int, const char *); | |
7b86a9fa AS |
2603 | #define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \ |
2604 | bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \ | |
2605 | (INTVAL), (STRVAL)) | |
104d59d1 JM |
2606 | |
2607 | extern char *_bfd_elf_attr_strdup (bfd *, const char *); | |
2608 | extern void _bfd_elf_copy_obj_attributes (bfd *, bfd *); | |
5ee4a1ca | 2609 | extern int _bfd_elf_obj_attrs_arg_type (bfd *, int, unsigned int); |
104d59d1 | 2610 | extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *); |
50e03d47 AM |
2611 | extern bfd_boolean _bfd_elf_merge_object_attributes |
2612 | (bfd *, struct bfd_link_info *); | |
e8b36cd1 JM |
2613 | extern bfd_boolean _bfd_elf_merge_unknown_attribute_low (bfd *, bfd *, int); |
2614 | extern bfd_boolean _bfd_elf_merge_unknown_attribute_list (bfd *, bfd *); | |
d4730f92 | 2615 | extern Elf_Internal_Shdr *_bfd_elf_single_rel_hdr (asection *sec); |
104d59d1 | 2616 | |
46bed679 L |
2617 | extern bfd_boolean _bfd_elf_parse_gnu_properties |
2618 | (bfd *, Elf_Internal_Note *); | |
2619 | extern elf_property * _bfd_elf_get_property | |
2620 | (bfd *, unsigned int, unsigned int); | |
fba37edd | 2621 | extern bfd *_bfd_elf_link_setup_gnu_properties |
46bed679 L |
2622 | (struct bfd_link_info *); |
2623 | ||
6061a67d | 2624 | /* The linker may need to keep track of the number of relocs that it |
e03a8ed8 L |
2625 | decides to copy as dynamic relocs in check_relocs for each symbol. |
2626 | This is so that it can later discard them if they are found to be | |
2627 | unnecessary. We can store the information in a field extending the | |
2628 | regular ELF linker hash table. */ | |
2629 | ||
2630 | struct elf_dyn_relocs | |
2631 | { | |
2632 | struct elf_dyn_relocs *next; | |
2633 | ||
2634 | /* The input section of the reloc. */ | |
2635 | asection *sec; | |
2636 | ||
2637 | /* Total number of relocs copied for the input section. */ | |
2638 | bfd_size_type count; | |
2639 | ||
2640 | /* Number of pc-relative relocs copied for the input section. */ | |
2641 | bfd_size_type pc_count; | |
2642 | }; | |
2643 | ||
2a81c24a | 2644 | extern bfd_boolean _bfd_elf_create_ifunc_sections |
3aa14d16 | 2645 | (bfd *, struct bfd_link_info *); |
e03a8ed8 L |
2646 | extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs |
2647 | (struct bfd_link_info *, struct elf_link_hash_entry *, | |
2df3368d | 2648 | struct elf_dyn_relocs **, bfd_boolean *, unsigned int, |
233cc9c1 | 2649 | unsigned int, unsigned int, bfd_boolean); |
3972882e L |
2650 | extern long _bfd_elf_ifunc_get_synthetic_symtab |
2651 | (bfd *, long, asymbol **, long, asymbol **, asymbol **, asection *, | |
2652 | bfd_vma *(*) (bfd *, asymbol **, asection *, asection *)); | |
d8045f23 | 2653 | |
351f65ca L |
2654 | extern void elf_append_rela (bfd *, asection *, Elf_Internal_Rela *); |
2655 | extern void elf_append_rel (bfd *, asection *, Elf_Internal_Rela *); | |
2656 | ||
2657 | extern bfd_vma elf64_r_info (bfd_vma, bfd_vma); | |
2658 | extern bfd_vma elf64_r_sym (bfd_vma); | |
2659 | extern bfd_vma elf32_r_info (bfd_vma, bfd_vma); | |
2660 | extern bfd_vma elf32_r_sym (bfd_vma); | |
2661 | ||
3b22753a L |
2662 | /* Large common section. */ |
2663 | extern asection _bfd_elf_large_com_section; | |
2664 | ||
d2149d72 L |
2665 | /* Hash for local symbol with the first section id, ID, in the input |
2666 | file and the local symbol index, SYM. */ | |
2667 | #define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \ | |
2668 | (((((ID) & 0xff) << 24) | (((ID) & 0xff00) << 8)) \ | |
2669 | ^ (SYM) ^ ((ID) >> 16)) | |
2670 | ||
c152c796 AM |
2671 | /* This is the condition under which finish_dynamic_symbol will be called. |
2672 | If our finish_dynamic_symbol isn't called, we'll need to do something | |
2673 | about initializing any .plt and .got entries in relocate_section. */ | |
2674 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ | |
2675 | ((DYN) \ | |
f5385ebf AM |
2676 | && ((SHARED) || !(H)->forced_local) \ |
2677 | && ((H)->dynindx != -1 || (H)->forced_local)) | |
c152c796 | 2678 | |
560e09e9 NC |
2679 | /* This macro is to avoid lots of duplicated code in the body |
2680 | of xxx_relocate_section() in the various elfxx-xxxx.c files. */ | |
b2a8e766 AM |
2681 | #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \ |
2682 | r_symndx, symtab_hdr, sym_hashes, \ | |
2683 | h, sec, relocation, \ | |
62d887d4 | 2684 | unresolved_reloc, warned, ignored) \ |
b2a8e766 AM |
2685 | do \ |
2686 | { \ | |
2687 | /* It seems this can happen with erroneous or unsupported \ | |
2688 | input (mixing a.out and elf in an archive, for example.) */ \ | |
2689 | if (sym_hashes == NULL) \ | |
2690 | return FALSE; \ | |
2691 | \ | |
2692 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \ | |
2693 | \ | |
8a5da09b AM |
2694 | if (info->wrap_hash != NULL \ |
2695 | && (input_section->flags & SEC_DEBUGGING) != 0) \ | |
2696 | h = ((struct elf_link_hash_entry *) \ | |
2697 | unwrap_hash_lookup (info, input_bfd, &h->root)); \ | |
2698 | \ | |
b2a8e766 AM |
2699 | while (h->root.type == bfd_link_hash_indirect \ |
2700 | || h->root.type == bfd_link_hash_warning) \ | |
2701 | h = (struct elf_link_hash_entry *) h->root.u.i.link; \ | |
2702 | \ | |
2703 | warned = FALSE; \ | |
62d887d4 | 2704 | ignored = FALSE; \ |
b2a8e766 AM |
2705 | unresolved_reloc = FALSE; \ |
2706 | relocation = 0; \ | |
2707 | if (h->root.type == bfd_link_hash_defined \ | |
2708 | || h->root.type == bfd_link_hash_defweak) \ | |
2709 | { \ | |
2710 | sec = h->root.u.def.section; \ | |
2711 | if (sec == NULL \ | |
2712 | || sec->output_section == NULL) \ | |
2713 | /* Set a flag that will be cleared later if we find a \ | |
2714 | relocation value for this symbol. output_section \ | |
2715 | is typically NULL for symbols satisfied by a shared \ | |
2716 | library. */ \ | |
2717 | unresolved_reloc = TRUE; \ | |
2718 | else \ | |
2719 | relocation = (h->root.u.def.value \ | |
2720 | + sec->output_section->vma \ | |
2721 | + sec->output_offset); \ | |
2722 | } \ | |
2723 | else if (h->root.type == bfd_link_hash_undefweak) \ | |
2724 | ; \ | |
2725 | else if (info->unresolved_syms_in_objects == RM_IGNORE \ | |
2726 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \ | |
62d887d4 | 2727 | ignored = TRUE; \ |
0e1862bb | 2728 | else if (!bfd_link_relocatable (info)) \ |
b2a8e766 | 2729 | { \ |
5a580b3a AM |
2730 | bfd_boolean err; \ |
2731 | err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR \ | |
2732 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT); \ | |
1a72702b AM |
2733 | (*info->callbacks->undefined_symbol) (info, \ |
2734 | h->root.root.string, \ | |
2735 | input_bfd, \ | |
2736 | input_section, \ | |
2737 | rel->r_offset, err); \ | |
b2a8e766 AM |
2738 | warned = TRUE; \ |
2739 | } \ | |
c7e2358a AM |
2740 | (void) unresolved_reloc; \ |
2741 | (void) warned; \ | |
62d887d4 | 2742 | (void) ignored; \ |
b2a8e766 | 2743 | } \ |
560e09e9 NC |
2744 | while (0) |
2745 | ||
0672748a L |
2746 | /* This macro is to avoid lots of duplicated code in the body of the |
2747 | loop over relocations in xxx_relocate_section() in the various | |
2748 | elfxx-xxxx.c files. | |
23209a78 | 2749 | |
0672748a L |
2750 | Handle relocations against symbols from removed linkonce sections, |
2751 | or sections discarded by a linker script. When doing a relocatable | |
2752 | link, we remove such relocations. Otherwise, we just want the | |
2753 | section contents zeroed and avoid any special processing. */ | |
2754 | #define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \ | |
545fd46b MR |
2755 | rel, count, relend, \ |
2756 | howto, index, contents) \ | |
0672748a | 2757 | { \ |
a134cc9b | 2758 | int i_; \ |
e4067dbb | 2759 | _bfd_clear_contents (howto, input_bfd, input_section, \ |
545fd46b | 2760 | contents + rel[index].r_offset); \ |
e4067dbb | 2761 | \ |
0e1862bb | 2762 | if (bfd_link_relocatable (info) \ |
0672748a L |
2763 | && (input_section->flags & SEC_DEBUGGING)) \ |
2764 | { \ | |
2765 | /* Only remove relocations in debug sections since other \ | |
2766 | sections may require relocations. */ \ | |
2767 | Elf_Internal_Shdr *rel_hdr; \ | |
2768 | \ | |
d4730f92 | 2769 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \ |
0672748a L |
2770 | \ |
2771 | /* Avoid empty output section. */ \ | |
86f7d49b | 2772 | if (rel_hdr->sh_size > rel_hdr->sh_entsize) \ |
0672748a | 2773 | { \ |
86f7d49b | 2774 | rel_hdr->sh_size -= rel_hdr->sh_entsize; \ |
d4730f92 | 2775 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); \ |
86f7d49b | 2776 | rel_hdr->sh_size -= rel_hdr->sh_entsize; \ |
0672748a | 2777 | \ |
545fd46b MR |
2778 | memmove (rel, rel + count, \ |
2779 | (relend - rel - count) * sizeof (*rel)); \ | |
0672748a | 2780 | \ |
056bafd4 | 2781 | input_section->reloc_count -= count; \ |
545fd46b | 2782 | relend -= count; \ |
0672748a L |
2783 | rel--; \ |
2784 | continue; \ | |
2785 | } \ | |
2786 | } \ | |
2787 | \ | |
a134cc9b | 2788 | for (i_ = 0; i_ < count; i_++) \ |
545fd46b | 2789 | { \ |
a134cc9b HPN |
2790 | rel[i_].r_info = 0; \ |
2791 | rel[i_].r_addend = 0; \ | |
545fd46b MR |
2792 | } \ |
2793 | rel += count - 1; \ | |
0672748a L |
2794 | continue; \ |
2795 | } | |
2796 | ||
a8685210 | 2797 | /* Will a symbol be bound to the definition within the shared |
6f8bcf84 | 2798 | library, if any. A unique symbol can never be bound locally. */ |
55255dae | 2799 | #define SYMBOLIC_BIND(INFO, H) \ |
6f8bcf84 L |
2800 | (!(H)->unique_global \ |
2801 | && ((INFO)->symbolic || ((INFO)->dynamic && !(H)->dynamic))) | |
55255dae | 2802 | |
55172d69 PA |
2803 | #ifdef __cplusplus |
2804 | } | |
2805 | #endif | |
252b5132 | 2806 | #endif /* _LIBELF_H_ */ |