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252b5132 | 1 | /* BFD back-end data structures for ELF files. |
6f2750fe | 2 | Copyright (C) 1992-2016 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; |
f6e332e6 AM |
216 | |
217 | /* String table index in .dynstr if this is a dynamic symbol. */ | |
218 | unsigned long dynstr_index; | |
219 | ||
220 | union | |
221 | { | |
222 | /* If this is a weak defined symbol from a dynamic object, this | |
223 | field points to a defined symbol with the same value, if there is | |
224 | one. Otherwise it is NULL. */ | |
225 | struct elf_link_hash_entry *weakdef; | |
226 | ||
227 | /* Hash value of the name computed using the ELF hash function. | |
228 | Used part way through size_dynamic_sections, after we've finished | |
229 | with weakdefs. */ | |
230 | unsigned long elf_hash_value; | |
231 | } u; | |
232 | ||
233 | /* Version information. */ | |
234 | union | |
235 | { | |
236 | /* This field is used for a symbol which is not defined in a | |
237 | regular object. It points to the version information read in | |
238 | from the dynamic object. */ | |
239 | Elf_Internal_Verdef *verdef; | |
240 | /* This field is used for a symbol which is defined in a regular | |
241 | object. It is set up in size_dynamic_sections. It points to | |
242 | the version information we should write out for this symbol. */ | |
243 | struct bfd_elf_version_tree *vertree; | |
244 | } verinfo; | |
245 | ||
a50b1753 | 246 | struct elf_link_virtual_table_entry *vtable; |
252b5132 RH |
247 | }; |
248 | ||
586119b3 | 249 | /* Will references to this symbol always reference the symbol |
2676a7d9 | 250 | in this object? */ |
986a241f | 251 | #define SYMBOL_REFERENCES_LOCAL(INFO, H) \ |
f6c52c13 | 252 | _bfd_elf_symbol_refs_local_p (H, INFO, 0) |
586119b3 AM |
253 | |
254 | /* Will _calls_ to this symbol always call the version in this object? */ | |
986a241f | 255 | #define SYMBOL_CALLS_LOCAL(INFO, H) \ |
f6c52c13 | 256 | _bfd_elf_symbol_refs_local_p (H, INFO, 1) |
586119b3 | 257 | |
7e2294f9 | 258 | /* Common symbols that are turned into definitions don't have the |
c4621b33 AM |
259 | DEF_REGULAR flag set, so they might appear to be undefined. |
260 | Symbols defined in linker scripts also don't have DEF_REGULAR set. */ | |
7e2294f9 | 261 | #define ELF_COMMON_DEF_P(H) \ |
f5385ebf AM |
262 | (!(H)->def_regular \ |
263 | && !(H)->def_dynamic \ | |
7e2294f9 AO |
264 | && (H)->root.type == bfd_link_hash_defined) |
265 | ||
30b30c21 RH |
266 | /* Records local symbols to be emitted in the dynamic symbol table. */ |
267 | ||
268 | struct elf_link_local_dynamic_entry | |
269 | { | |
270 | struct elf_link_local_dynamic_entry *next; | |
271 | ||
272 | /* The input bfd this symbol came from. */ | |
273 | bfd *input_bfd; | |
274 | ||
275 | /* The index of the local symbol being copied. */ | |
276 | long input_indx; | |
277 | ||
278 | /* The index in the outgoing dynamic symbol table. */ | |
279 | long dynindx; | |
3e932841 | 280 | |
30b30c21 RH |
281 | /* A copy of the input symbol. */ |
282 | Elf_Internal_Sym isym; | |
283 | }; | |
284 | ||
f5d44ba0 AM |
285 | struct elf_link_loaded_list |
286 | { | |
287 | struct elf_link_loaded_list *next; | |
288 | bfd *abfd; | |
289 | }; | |
290 | ||
126495ed | 291 | /* Structures used by the eh_frame optimization code. */ |
126495ed AM |
292 | struct eh_cie_fde |
293 | { | |
155eaaa0 RS |
294 | union { |
295 | struct { | |
ca92cecb RS |
296 | /* If REMOVED == 1, this is the CIE that the FDE originally used. |
297 | The CIE belongs to the same .eh_frame input section as the FDE. | |
298 | ||
299 | If REMOVED == 0, this is the CIE that we have chosen to use for | |
300 | the output FDE. The CIE's REMOVED field is also 0, but the CIE | |
c2aaac08 AM |
301 | might belong to a different .eh_frame input section from the FDE. |
302 | ||
303 | May be NULL to signify that the FDE should be discarded. */ | |
155eaaa0 | 304 | struct eh_cie_fde *cie_inf; |
9d0a14d3 | 305 | struct eh_cie_fde *next_for_section; |
155eaaa0 | 306 | } fde; |
ca92cecb | 307 | struct { |
184d07da | 308 | /* CIEs have three states: |
fc802241 | 309 | |
184d07da RS |
310 | - REMOVED && !MERGED: Slated for removal because we haven't yet |
311 | proven that an FDE needs it. FULL_CIE, if nonnull, points to | |
312 | more detailed information about the CIE. | |
fc802241 | 313 | |
184d07da RS |
314 | - REMOVED && MERGED: We have merged this CIE with MERGED_WITH, |
315 | which may not belong to the same input section. | |
316 | ||
317 | - !REMOVED: We have decided to keep this CIE. SEC is the | |
318 | .eh_frame input section that contains the CIE. */ | |
fc802241 | 319 | union { |
184d07da RS |
320 | struct cie *full_cie; |
321 | struct eh_cie_fde *merged_with; | |
fc802241 RS |
322 | asection *sec; |
323 | } u; | |
9d0a14d3 | 324 | |
18e04883 RS |
325 | /* The offset of the personality data from the start of the CIE, |
326 | or 0 if the CIE doesn't have any. */ | |
327 | unsigned int personality_offset : 8; | |
328 | ||
9d0a14d3 RS |
329 | /* True if we have marked relocations associated with this CIE. */ |
330 | unsigned int gc_mark : 1; | |
9f4b847e RS |
331 | |
332 | /* True if we have decided to turn an absolute LSDA encoding into | |
184d07da | 333 | a PC-relative one. */ |
9f4b847e | 334 | unsigned int make_lsda_relative : 1; |
6b2cc140 | 335 | |
18e04883 RS |
336 | /* True if we have decided to turn an absolute personality |
337 | encoding into a PC-relative one. */ | |
338 | unsigned int make_per_encoding_relative : 1; | |
339 | ||
340 | /* True if the CIE contains personality data and if that | |
341 | data uses a PC-relative encoding. Always true when | |
342 | make_per_encoding_relative is. */ | |
6b2cc140 RS |
343 | unsigned int per_encoding_relative : 1; |
344 | ||
345 | /* True if we need to add an 'R' (FDE encoding) entry to the | |
346 | CIE's augmentation data. */ | |
347 | unsigned int add_fde_encoding : 1; | |
184d07da RS |
348 | |
349 | /* True if we have merged this CIE with another. */ | |
350 | unsigned int merged : 1; | |
18e04883 RS |
351 | |
352 | /* Unused bits. */ | |
353 | unsigned int pad1 : 18; | |
ca92cecb | 354 | } cie; |
155eaaa0 RS |
355 | } u; |
356 | unsigned int reloc_index; | |
126495ed | 357 | unsigned int size; |
fda3ecf2 | 358 | unsigned int offset; |
126495ed | 359 | unsigned int new_offset; |
155eaaa0 RS |
360 | unsigned int fde_encoding : 8; |
361 | unsigned int lsda_encoding : 8; | |
362 | unsigned int lsda_offset : 8; | |
6b2cc140 RS |
363 | |
364 | /* True if this entry represents a CIE, false if it represents an FDE. */ | |
822392ce | 365 | unsigned int cie : 1; |
6b2cc140 RS |
366 | |
367 | /* True if this entry is currently marked for removal. */ | |
822392ce | 368 | unsigned int removed : 1; |
6b2cc140 RS |
369 | |
370 | /* True if we need to add a 'z' (augmentation size) entry to the CIE's | |
371 | augmentation data, and an associated byte to each of the CIE's FDEs. */ | |
353057a5 | 372 | unsigned int add_augmentation_size : 1; |
6b2cc140 RS |
373 | |
374 | /* True if we have decided to convert absolute FDE relocations into | |
375 | relative ones. This applies to the first relocation in the FDE, | |
376 | which is against the code that the FDE describes. */ | |
822392ce | 377 | unsigned int make_relative : 1; |
6b2cc140 RS |
378 | |
379 | /* Unused bits. */ | |
380 | unsigned int pad1 : 4; | |
381 | ||
ac685e6a | 382 | unsigned int *set_loc; |
126495ed AM |
383 | }; |
384 | ||
385 | struct eh_frame_sec_info | |
386 | { | |
387 | unsigned int count; | |
184d07da | 388 | struct cie *cies; |
126495ed AM |
389 | struct eh_cie_fde entry[1]; |
390 | }; | |
391 | ||
392 | struct eh_frame_array_ent | |
393 | { | |
394 | bfd_vma initial_loc; | |
ae6c7e33 | 395 | bfd_size_type range; |
126495ed AM |
396 | bfd_vma fde; |
397 | }; | |
398 | ||
bce613b9 JJ |
399 | struct htab; |
400 | ||
2f0c68f2 CM |
401 | #define DWARF2_EH_HDR 1 |
402 | #define COMPACT_EH_HDR 2 | |
403 | ||
404 | /* Endian-neutral code indicating that a function cannot be unwound. */ | |
405 | #define COMPACT_EH_CANT_UNWIND_OPCODE 0x015d5d01 | |
406 | ||
407 | struct dwarf_eh_frame_hdr_info | |
126495ed | 408 | { |
bce613b9 | 409 | struct htab *cies; |
2f0c68f2 | 410 | unsigned int fde_count; |
126495ed AM |
411 | /* TRUE if .eh_frame_hdr should contain the sorted search table. |
412 | We build it if we successfully read all .eh_frame input sections | |
413 | and recognize them. */ | |
b34976b6 | 414 | bfd_boolean table; |
2f0c68f2 CM |
415 | struct eh_frame_array_ent *array; |
416 | }; | |
417 | ||
418 | struct compact_eh_frame_hdr_info | |
419 | { | |
420 | unsigned int allocated_entries; | |
421 | /* eh_frame_entry fragments. */ | |
422 | asection **entries; | |
423 | }; | |
424 | ||
425 | struct eh_frame_hdr_info | |
426 | { | |
427 | asection *hdr_sec; | |
428 | unsigned int array_count; | |
429 | bfd_boolean frame_hdr_is_compact; | |
430 | union | |
431 | { | |
432 | struct dwarf_eh_frame_hdr_info dwarf; | |
433 | struct compact_eh_frame_hdr_info compact; | |
434 | } | |
435 | u; | |
126495ed AM |
436 | }; |
437 | ||
4dfe6ac6 NC |
438 | /* Enum used to identify target specific extensions to the elf_obj_tdata |
439 | and elf_link_hash_table structures. Note the enums deliberately start | |
440 | from 1 so that we can detect an uninitialized field. The generic value | |
441 | is last so that additions to this enum do not need to modify more than | |
442 | one line. */ | |
443 | enum elf_target_id | |
444 | { | |
a06ea964 NC |
445 | AARCH64_ELF_DATA = 1, |
446 | ALPHA_ELF_DATA, | |
8a36df4d | 447 | ARC_ELF_DATA, |
4dfe6ac6 NC |
448 | ARM_ELF_DATA, |
449 | AVR_ELF_DATA, | |
450 | BFIN_ELF_DATA, | |
451 | CRIS_ELF_DATA, | |
452 | FRV_ELF_DATA, | |
453 | HPPA32_ELF_DATA, | |
454 | HPPA64_ELF_DATA, | |
455 | I386_ELF_DATA, | |
456 | IA64_ELF_DATA, | |
457 | LM32_ELF_DATA, | |
458 | M32R_ELF_DATA, | |
459 | M68HC11_ELF_DATA, | |
460 | M68K_ELF_DATA, | |
a3c62988 | 461 | METAG_ELF_DATA, |
4dfe6ac6 NC |
462 | MICROBLAZE_ELF_DATA, |
463 | MIPS_ELF_DATA, | |
464 | MN10300_ELF_DATA, | |
35c08157 | 465 | NDS32_ELF_DATA, |
36591ba1 | 466 | NIOS2_ELF_DATA, |
73589c9d | 467 | OR1K_ELF_DATA, |
4dfe6ac6 NC |
468 | PPC32_ELF_DATA, |
469 | PPC64_ELF_DATA, | |
470 | S390_ELF_DATA, | |
471 | SH_ELF_DATA, | |
472 | SPARC_ELF_DATA, | |
473 | SPU_ELF_DATA, | |
41820509 | 474 | TIC6X_ELF_DATA, |
4dfe6ac6 NC |
475 | X86_64_ELF_DATA, |
476 | XTENSA_ELF_DATA, | |
f6c1a2d5 | 477 | XGATE_ELF_DATA, |
aa137e4d NC |
478 | TILEGX_ELF_DATA, |
479 | TILEPRO_ELF_DATA, | |
e23eba97 | 480 | RISCV_ELF_DATA, |
4dfe6ac6 NC |
481 | GENERIC_ELF_DATA |
482 | }; | |
483 | ||
ef10c3ac L |
484 | struct elf_sym_strtab |
485 | { | |
486 | Elf_Internal_Sym sym; | |
487 | unsigned long dest_index; | |
488 | unsigned long destshndx_index; | |
489 | }; | |
490 | ||
252b5132 RH |
491 | /* ELF linker hash table. */ |
492 | ||
493 | struct elf_link_hash_table | |
494 | { | |
495 | struct bfd_link_hash_table root; | |
51b64d56 | 496 | |
4dfe6ac6 NC |
497 | /* An identifier used to distinguish different target |
498 | specific extensions to this structure. */ | |
499 | enum elf_target_id hash_table_id; | |
500 | ||
252b5132 RH |
501 | /* Whether we have created the special dynamic sections required |
502 | when linking against or generating a shared object. */ | |
b34976b6 | 503 | bfd_boolean dynamic_sections_created; |
51b64d56 | 504 | |
74541ad4 AM |
505 | /* True if this target has relocatable executables, so needs dynamic |
506 | section symbols. */ | |
507 | bfd_boolean is_relocatable_executable; | |
508 | ||
252b5132 RH |
509 | /* The BFD used to hold special sections created by the linker. |
510 | This will be the first BFD found which requires these sections to | |
511 | be created. */ | |
512 | bfd *dynobj; | |
51b64d56 AM |
513 | |
514 | /* The value to use when initialising got.refcount/offset and | |
515 | plt.refcount/offset in an elf_link_hash_entry. Set to zero when | |
a6aa5195 AM |
516 | the values are refcounts. Set to init_got_offset/init_plt_offset |
517 | in size_dynamic_sections when the values may be offsets. */ | |
518 | union gotplt_union init_got_refcount; | |
519 | union gotplt_union init_plt_refcount; | |
5cab59f6 AM |
520 | |
521 | /* The value to use for got.refcount/offset and plt.refcount/offset | |
522 | when the values may be offsets. Normally (bfd_vma) -1. */ | |
a6aa5195 AM |
523 | union gotplt_union init_got_offset; |
524 | union gotplt_union init_plt_offset; | |
51b64d56 | 525 | |
d5486c43 L |
526 | /* The number of symbols found in the link which is intended for the |
527 | mandatory DT_SYMTAB tag (.dynsym section) in .dynamic section. */ | |
252b5132 | 528 | bfd_size_type dynsymcount; |
90ac2420 | 529 | bfd_size_type local_dynsymcount; |
51b64d56 | 530 | |
252b5132 RH |
531 | /* The string table of dynamic symbols, which becomes the .dynstr |
532 | section. */ | |
2b0f7ef9 | 533 | struct elf_strtab_hash *dynstr; |
51b64d56 | 534 | |
ef10c3ac L |
535 | /* The number of symbol strings found in the link which must be put |
536 | into the .strtab section. */ | |
537 | bfd_size_type strtabcount; | |
538 | ||
539 | /* The array size of the symbol string table, which becomes the | |
540 | .strtab section. */ | |
541 | bfd_size_type strtabsize; | |
542 | ||
543 | /* The array of strings, which becomes the .strtab section. */ | |
544 | struct elf_sym_strtab *strtab; | |
545 | ||
252b5132 RH |
546 | /* The number of buckets in the hash table in the .hash section. |
547 | This is based on the number of dynamic symbols. */ | |
548 | bfd_size_type bucketcount; | |
51b64d56 | 549 | |
252b5132 RH |
550 | /* A linked list of DT_NEEDED names found in dynamic objects |
551 | included in the link. */ | |
552 | struct bfd_link_needed_list *needed; | |
51b64d56 | 553 | |
74541ad4 AM |
554 | /* Sections in the output bfd that provides a section symbol |
555 | to be used by relocations emitted against local symbols. | |
556 | Most targets will not use data_index_section. */ | |
557 | asection *text_index_section; | |
558 | asection *data_index_section; | |
559 | ||
252b5132 RH |
560 | /* The _GLOBAL_OFFSET_TABLE_ symbol. */ |
561 | struct elf_link_hash_entry *hgot; | |
51b64d56 | 562 | |
7325306f RS |
563 | /* The _PROCEDURE_LINKAGE_TABLE_ symbol. */ |
564 | struct elf_link_hash_entry *hplt; | |
565 | ||
9637f6ef L |
566 | /* The _DYNAMIC symbol. */ |
567 | struct elf_link_hash_entry *hdynamic; | |
568 | ||
f5fa8ca2 | 569 | /* A pointer to information used to merge SEC_MERGE sections. */ |
c39a58e6 | 570 | void *merge_info; |
51b64d56 | 571 | |
3722b82f AM |
572 | /* Used to link stabs in sections. */ |
573 | struct stab_info stab_info; | |
574 | ||
126495ed AM |
575 | /* Used by eh_frame code when editing .eh_frame. */ |
576 | struct eh_frame_hdr_info eh_info; | |
577 | ||
30b30c21 RH |
578 | /* A linked list of local symbols to be added to .dynsym. */ |
579 | struct elf_link_local_dynamic_entry *dynlocal; | |
51b64d56 | 580 | |
a963dc6a L |
581 | /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic |
582 | objects included in the link. */ | |
583 | struct bfd_link_needed_list *runpath; | |
13ae64f3 | 584 | |
e1918d23 AM |
585 | /* Cached first output tls section and size of PT_TLS segment. */ |
586 | asection *tls_sec; | |
587 | bfd_size_type tls_size; | |
f5d44ba0 AM |
588 | |
589 | /* A linked list of BFD's loaded in the link. */ | |
590 | struct elf_link_loaded_list *loaded; | |
6de2ae4a L |
591 | |
592 | /* Short-cuts to get to dynamic linker sections. */ | |
593 | asection *sgot; | |
594 | asection *sgotplt; | |
595 | asection *srelgot; | |
596 | asection *splt; | |
597 | asection *srelplt; | |
9d19e4fd AM |
598 | asection *sdynbss; |
599 | asection *srelbss; | |
5474d94f AM |
600 | asection *sdynrelro; |
601 | asection *sreldynrelro; | |
6de2ae4a L |
602 | asection *igotplt; |
603 | asection *iplt; | |
604 | asection *irelplt; | |
605 | asection *irelifunc; | |
cae1fbbb | 606 | asection *dynsym; |
252b5132 RH |
607 | }; |
608 | ||
609 | /* Look up an entry in an ELF linker hash table. */ | |
610 | ||
611 | #define elf_link_hash_lookup(table, string, create, copy, follow) \ | |
612 | ((struct elf_link_hash_entry *) \ | |
613 | bfd_link_hash_lookup (&(table)->root, (string), (create), \ | |
614 | (copy), (follow))) | |
615 | ||
616 | /* Traverse an ELF linker hash table. */ | |
617 | ||
618 | #define elf_link_hash_traverse(table, func, info) \ | |
619 | (bfd_link_hash_traverse \ | |
620 | (&(table)->root, \ | |
c39a58e6 | 621 | (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
622 | (info))) |
623 | ||
624 | /* Get the ELF linker hash table from a link_info structure. */ | |
625 | ||
626 | #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash)) | |
8ea2e4bd | 627 | |
4dfe6ac6 NC |
628 | #define elf_hash_table_id(table) ((table) -> hash_table_id) |
629 | ||
b34976b6 | 630 | /* Returns TRUE if the hash table is a struct elf_link_hash_table. */ |
0eddce27 AM |
631 | #define is_elf_hash_table(htab) \ |
632 | (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table) | |
ec338859 | 633 | |
87d72d41 AM |
634 | /* Used by bfd_sym_from_r_symndx to cache a small number of local |
635 | symbols. */ | |
ec338859 | 636 | #define LOCAL_SYM_CACHE_SIZE 32 |
87d72d41 | 637 | struct sym_cache |
ec338859 AM |
638 | { |
639 | bfd *abfd; | |
640 | unsigned long indx[LOCAL_SYM_CACHE_SIZE]; | |
87d72d41 | 641 | Elf_Internal_Sym sym[LOCAL_SYM_CACHE_SIZE]; |
ec338859 | 642 | }; |
252b5132 RH |
643 | \f |
644 | /* Constant information held for an ELF backend. */ | |
645 | ||
646 | struct elf_size_info { | |
647 | unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr; | |
648 | unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note; | |
649 | ||
c7ac6ff8 MM |
650 | /* The size of entries in the .hash section. */ |
651 | unsigned char sizeof_hash_entry; | |
652 | ||
653 | /* The number of internal relocations to allocate per external | |
654 | relocation entry. */ | |
655 | unsigned char int_rels_per_ext_rel; | |
947216bf AM |
656 | /* We use some fixed size arrays. This should be large enough to |
657 | handle all back-ends. */ | |
658 | #define MAX_INT_RELS_PER_EXT_REL 3 | |
c7ac6ff8 | 659 | |
45d6a902 | 660 | unsigned char arch_size, log_file_align; |
252b5132 | 661 | unsigned char elfclass, ev_current; |
dc810e39 | 662 | int (*write_out_phdrs) |
c39a58e6 AM |
663 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
664 | bfd_boolean | |
665 | (*write_shdrs_and_ehdr) (bfd *); | |
20a761b5 RM |
666 | bfd_boolean (*checksum_contents) |
667 | (bfd * , void (*) (const void *, size_t, void *), void *); | |
dc810e39 | 668 | void (*write_relocs) |
c39a58e6 | 669 | (bfd *, asection *, void *); |
8384fb8f | 670 | bfd_boolean (*swap_symbol_in) |
c39a58e6 | 671 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
dc810e39 | 672 | void (*swap_symbol_out) |
c39a58e6 | 673 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
b34976b6 | 674 | bfd_boolean (*slurp_reloc_table) |
c39a58e6 | 675 | (bfd *, asection *, asymbol **, bfd_boolean); |
dc810e39 | 676 | long (*slurp_symbol_table) |
c39a58e6 | 677 | (bfd *, asymbol **, bfd_boolean); |
dc810e39 | 678 | void (*swap_dyn_in) |
c39a58e6 | 679 | (bfd *, const void *, Elf_Internal_Dyn *); |
dc810e39 | 680 | void (*swap_dyn_out) |
c39a58e6 | 681 | (bfd *, const Elf_Internal_Dyn *, void *); |
c7ac6ff8 | 682 | |
947216bf AM |
683 | /* This function is called to swap in a REL relocation. If an |
684 | external relocation corresponds to more than one internal | |
685 | relocation, then all relocations are swapped in at once. */ | |
c7ac6ff8 | 686 | void (*swap_reloc_in) |
c39a58e6 | 687 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
c7ac6ff8 | 688 | |
947216bf | 689 | /* This function is called to swap out a REL relocation. */ |
c7ac6ff8 | 690 | void (*swap_reloc_out) |
c39a58e6 | 691 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
c7ac6ff8 | 692 | |
947216bf AM |
693 | /* This function is called to swap in a RELA relocation. If an |
694 | external relocation corresponds to more than one internal | |
695 | relocation, then all relocations are swapped in at once. */ | |
c7ac6ff8 | 696 | void (*swap_reloca_in) |
c39a58e6 | 697 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
c7ac6ff8 | 698 | |
947216bf | 699 | /* This function is called to swap out a RELA relocation. */ |
c7ac6ff8 | 700 | void (*swap_reloca_out) |
c39a58e6 | 701 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 RH |
702 | }; |
703 | ||
704 | #define elf_symbol_from(ABFD,S) \ | |
705 | (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \ | |
706 | && (S)->the_bfd->tdata.elf_obj_data != 0) \ | |
707 | ? (elf_symbol_type *) (S) \ | |
708 | : 0) | |
709 | ||
db6751f2 JJ |
710 | enum elf_reloc_type_class { |
711 | reloc_class_normal, | |
712 | reloc_class_relative, | |
7e612e98 | 713 | reloc_class_copy, |
1997c994 AM |
714 | reloc_class_ifunc, |
715 | reloc_class_plt | |
db6751f2 JJ |
716 | }; |
717 | ||
73d074b4 DJ |
718 | struct elf_reloc_cookie |
719 | { | |
720 | Elf_Internal_Rela *rels, *rel, *relend; | |
6cdc0ccc | 721 | Elf_Internal_Sym *locsyms; |
73d074b4 DJ |
722 | bfd *abfd; |
723 | size_t locsymcount; | |
724 | size_t extsymoff; | |
725 | struct elf_link_hash_entry **sym_hashes; | |
140f6c8e | 726 | int r_sym_shift; |
b34976b6 | 727 | bfd_boolean bad_symtab; |
73d074b4 DJ |
728 | }; |
729 | ||
c6e90b02 TS |
730 | /* The level of IRIX compatibility we're striving for. */ |
731 | ||
732 | typedef enum { | |
733 | ict_none, | |
734 | ict_irix5, | |
735 | ict_irix6 | |
736 | } irix_compat_t; | |
737 | ||
2f89ff8d L |
738 | /* Mapping of ELF section names and types. */ |
739 | struct bfd_elf_special_section | |
740 | { | |
741 | const char *prefix; | |
9fb71ee4 | 742 | unsigned int prefix_length; |
7dcb9820 AM |
743 | /* 0 means name must match PREFIX exactly. |
744 | -1 means name must start with PREFIX followed by an arbitrary string. | |
745 | -2 means name must match PREFIX exactly or consist of PREFIX followed | |
746 | by a dot then anything. | |
747 | > 0 means name must start with the first PREFIX_LENGTH chars of | |
748 | PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */ | |
9fb71ee4 NC |
749 | signed int suffix_length; |
750 | unsigned int type; | |
01e1a5bc | 751 | bfd_vma attr; |
2f89ff8d L |
752 | }; |
753 | ||
8a696751 AM |
754 | enum action_discarded |
755 | { | |
756 | COMPLAIN = 1, | |
757 | PRETEND = 2 | |
758 | }; | |
759 | ||
6a5bb875 PB |
760 | typedef asection * (*elf_gc_mark_hook_fn) |
761 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | |
762 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
763 | ||
9eaff861 AO |
764 | struct bfd_elf_section_reloc_data; |
765 | ||
252b5132 RH |
766 | struct elf_backend_data |
767 | { | |
252b5132 RH |
768 | /* The architecture for this backend. */ |
769 | enum bfd_architecture arch; | |
770 | ||
ae95ffa6 L |
771 | /* An identifier used to distinguish different target specific |
772 | extensions to elf_obj_tdata and elf_link_hash_table structures. */ | |
773 | enum elf_target_id target_id; | |
774 | ||
252b5132 RH |
775 | /* The ELF machine code (EM_xxxx) for this backend. */ |
776 | int elf_machine_code; | |
777 | ||
9eaff861 | 778 | /* EI_OSABI. */ |
d1036acb L |
779 | int elf_osabi; |
780 | ||
252b5132 RH |
781 | /* The maximum page size for this backend. */ |
782 | bfd_vma maxpagesize; | |
783 | ||
b1342370 DJ |
784 | /* The minimum page size for this backend. An input object will not be |
785 | considered page aligned unless its sections are correctly aligned for | |
786 | pages at least this large. May be smaller than maxpagesize. */ | |
787 | bfd_vma minpagesize; | |
788 | ||
24718e3b L |
789 | /* The common page size for this backend. */ |
790 | bfd_vma commonpagesize; | |
791 | ||
e5a52504 MM |
792 | /* The BFD flags applied to sections created for dynamic linking. */ |
793 | flagword dynamic_sec_flags; | |
794 | ||
23209a78 RM |
795 | /* Architecture-specific data for this backend. |
796 | This is actually a pointer to some type like struct elf_ARCH_data. */ | |
797 | const void *arch_data; | |
798 | ||
252b5132 RH |
799 | /* A function to translate an ELF RELA relocation to a BFD arelent |
800 | structure. */ | |
dc810e39 | 801 | void (*elf_info_to_howto) |
c39a58e6 | 802 | (bfd *, arelent *, Elf_Internal_Rela *); |
252b5132 RH |
803 | |
804 | /* A function to translate an ELF REL relocation to a BFD arelent | |
805 | structure. */ | |
dc810e39 | 806 | void (*elf_info_to_howto_rel) |
c39a58e6 | 807 | (bfd *, arelent *, Elf_Internal_Rela *); |
252b5132 RH |
808 | |
809 | /* A function to determine whether a symbol is global when | |
810 | partitioning the symbol table into local and global symbols. | |
811 | This should be NULL for most targets, in which case the correct | |
812 | thing will be done. MIPS ELF, at least on the Irix 5, has | |
813 | special requirements. */ | |
b34976b6 | 814 | bfd_boolean (*elf_backend_sym_is_global) |
c39a58e6 | 815 | (bfd *, asymbol *); |
252b5132 RH |
816 | |
817 | /* The remaining functions are hooks which are called only if they | |
818 | are not NULL. */ | |
819 | ||
820 | /* A function to permit a backend specific check on whether a | |
821 | particular BFD format is relevant for an object file, and to | |
822 | permit the backend to set any global information it wishes. When | |
823 | this is called elf_elfheader is set, but anything else should be | |
b34976b6 | 824 | used with caution. If this returns FALSE, the check_format |
252b5132 | 825 | routine will return a bfd_error_wrong_format error. */ |
b34976b6 | 826 | bfd_boolean (*elf_backend_object_p) |
c39a58e6 | 827 | (bfd *); |
252b5132 RH |
828 | |
829 | /* A function to do additional symbol processing when reading the | |
830 | ELF symbol table. This is where any processor-specific special | |
831 | section indices are handled. */ | |
dc810e39 | 832 | void (*elf_backend_symbol_processing) |
c39a58e6 | 833 | (bfd *, asymbol *); |
252b5132 RH |
834 | |
835 | /* A function to do additional symbol processing after reading the | |
836 | entire ELF symbol table. */ | |
b34976b6 | 837 | bfd_boolean (*elf_backend_symbol_table_processing) |
c39a58e6 | 838 | (bfd *, elf_symbol_type *, unsigned int); |
252b5132 | 839 | |
8387904d | 840 | /* A function to set the type of the info field. Processor-specific |
3e932841 | 841 | types should be handled here. */ |
dc810e39 | 842 | int (*elf_backend_get_symbol_type) |
c39a58e6 | 843 | (Elf_Internal_Sym *, int); |
60bcf0fa | 844 | |
8387904d AM |
845 | /* A function to return the linker hash table entry of a symbol that |
846 | might be satisfied by an archive symbol. */ | |
847 | struct elf_link_hash_entry * (*elf_backend_archive_symbol_lookup) | |
848 | (bfd *, struct bfd_link_info *, const char *); | |
849 | ||
174fd7f9 RS |
850 | /* Return true if local section symbols should have a non-null st_name. |
851 | NULL implies false. */ | |
852 | bfd_boolean (*elf_backend_name_local_section_symbols) | |
853 | (bfd *); | |
854 | ||
252b5132 RH |
855 | /* A function to do additional processing on the ELF section header |
856 | just before writing it out. This is used to set the flags and | |
857 | type fields for some sections, or to actually write out data for | |
858 | unusual sections. */ | |
b34976b6 | 859 | bfd_boolean (*elf_backend_section_processing) |
c39a58e6 | 860 | (bfd *, Elf_Internal_Shdr *); |
252b5132 RH |
861 | |
862 | /* A function to handle unusual section types when creating BFD | |
863 | sections from ELF sections. */ | |
b34976b6 | 864 | bfd_boolean (*elf_backend_section_from_shdr) |
6dc132d9 | 865 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
252b5132 | 866 | |
551b43fd | 867 | /* A function to convert machine dependent ELF section header flags to |
fa152c49 | 868 | BFD internal section header flags. */ |
b34976b6 | 869 | bfd_boolean (*elf_backend_section_flags) |
1829f4b2 | 870 | (flagword *, const Elf_Internal_Shdr *); |
fa152c49 | 871 | |
551b43fd AM |
872 | /* A function that returns a struct containing ELF section flags and |
873 | type for the given BFD section. */ | |
874 | const struct bfd_elf_special_section * (*get_sec_type_attr) | |
875 | (bfd *, asection *); | |
876 | ||
20cfcaae | 877 | /* A function to handle unusual program segment types when creating BFD |
3e932841 | 878 | sections from ELF program segments. */ |
b34976b6 | 879 | bfd_boolean (*elf_backend_section_from_phdr) |
d27f5fa1 | 880 | (bfd *, Elf_Internal_Phdr *, int, const char *); |
20cfcaae | 881 | |
252b5132 RH |
882 | /* A function to set up the ELF section header for a BFD section in |
883 | preparation for writing it out. This is where the flags and type | |
884 | fields are set for unusual sections. */ | |
b34976b6 | 885 | bfd_boolean (*elf_backend_fake_sections) |
c39a58e6 | 886 | (bfd *, Elf_Internal_Shdr *, asection *); |
252b5132 RH |
887 | |
888 | /* A function to get the ELF section index for a BFD section. If | |
b34976b6 | 889 | this returns TRUE, the section was found. If it is a normal ELF |
252b5132 RH |
890 | section, *RETVAL should be left unchanged. If it is not a normal |
891 | ELF section *RETVAL should be set to the SHN_xxxx index. */ | |
b34976b6 | 892 | bfd_boolean (*elf_backend_section_from_bfd_section) |
c39a58e6 | 893 | (bfd *, asection *, int *retval); |
252b5132 RH |
894 | |
895 | /* If this field is not NULL, it is called by the add_symbols phase | |
896 | of a link just before adding a symbol to the global linker hash | |
897 | table. It may modify any of the fields as it wishes. If *NAME | |
898 | is set to NULL, the symbol will be skipped rather than being | |
899 | added to the hash table. This function is responsible for | |
900 | handling all processor dependent symbol bindings and section | |
901 | indices, and must set at least *FLAGS and *SEC for each processor | |
902 | dependent case; failure to do so will cause a link error. */ | |
b34976b6 | 903 | bfd_boolean (*elf_add_symbol_hook) |
555cd476 | 904 | (bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *, |
c39a58e6 | 905 | const char **name, flagword *flags, asection **sec, bfd_vma *value); |
252b5132 RH |
906 | |
907 | /* If this field is not NULL, it is called by the elf_link_output_sym | |
6e0b88f1 AM |
908 | phase of a link for each symbol which will appear in the object file. |
909 | On error, this function returns 0. 1 is returned when the symbol | |
910 | should be output, 2 is returned when the symbol should be discarded. */ | |
911 | int (*elf_backend_link_output_symbol_hook) | |
754021d0 AM |
912 | (struct bfd_link_info *info, const char *, Elf_Internal_Sym *, |
913 | asection *, struct elf_link_hash_entry *); | |
252b5132 RH |
914 | |
915 | /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend | |
916 | linker the first time it encounters a dynamic object in the link. | |
917 | This function must create any sections required for dynamic | |
918 | linking. The ABFD argument is a dynamic object. The .interp, | |
919 | .dynamic, .dynsym, .dynstr, and .hash functions have already been | |
920 | created, and this function may modify the section flags if | |
921 | desired. This function will normally create the .got and .plt | |
922 | sections, but different backends have different requirements. */ | |
b34976b6 | 923 | bfd_boolean (*elf_backend_create_dynamic_sections) |
c39a58e6 | 924 | (bfd *abfd, struct bfd_link_info *info); |
252b5132 | 925 | |
aee6f5b4 AO |
926 | /* When creating a shared library, determine whether to omit the |
927 | dynamic symbol for the section. */ | |
928 | bfd_boolean (*elf_backend_omit_section_dynsym) | |
929 | (bfd *output_bfd, struct bfd_link_info *info, asection *osec); | |
930 | ||
13285a1b AM |
931 | /* Return TRUE if relocations of targets are compatible to the extent |
932 | that CHECK_RELOCS will properly process them. PR 4424. */ | |
933 | bfd_boolean (*relocs_compatible) (const bfd_target *, const bfd_target *); | |
934 | ||
252b5132 RH |
935 | /* The CHECK_RELOCS function is called by the add_symbols phase of |
936 | the ELF backend linker. It is called once for each section with | |
937 | relocs of an object file, just after the symbols for the object | |
938 | file have been added to the global linker hash table. The | |
939 | function must look through the relocs and do any special handling | |
940 | required. This generally means allocating space in the global | |
941 | offset table, and perhaps allocating space for a reloc. The | |
942 | relocs are always passed as Rela structures; if the section | |
943 | actually uses Rel structures, the r_addend field will always be | |
944 | zero. */ | |
b34976b6 | 945 | bfd_boolean (*check_relocs) |
c39a58e6 AM |
946 | (bfd *abfd, struct bfd_link_info *info, asection *o, |
947 | const Elf_Internal_Rela *relocs); | |
252b5132 | 948 | |
85fbca6a NC |
949 | /* The CHECK_DIRECTIVES function is called once per input file by |
950 | the add_symbols phase of the ELF backend linker. The function | |
951 | must inspect the bfd and create any additional symbols according | |
952 | to any custom directives in the bfd. */ | |
953 | bfd_boolean (*check_directives) | |
954 | (bfd *abfd, struct bfd_link_info *info); | |
955 | ||
e5034e59 AM |
956 | /* The NOTICE_AS_NEEDED function is called as the linker is about to |
957 | handle an as-needed lib (ACT = notice_as_needed), and after the | |
958 | linker has decided to keep the lib (ACT = notice_needed) or when | |
959 | the lib is not needed (ACT = notice_not_needed). */ | |
960 | bfd_boolean (*notice_as_needed) | |
961 | (bfd *abfd, struct bfd_link_info *info, enum notice_asneeded_action act); | |
97fed1c9 | 962 | |
252b5132 RH |
963 | /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend |
964 | linker for every symbol which is defined by a dynamic object and | |
965 | referenced by a regular object. This is called after all the | |
966 | input files have been seen, but before the SIZE_DYNAMIC_SECTIONS | |
967 | function has been called. The hash table entry should be | |
968 | bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be | |
969 | defined in a section from a dynamic object. Dynamic object | |
970 | sections are not included in the final link, and this function is | |
971 | responsible for changing the value to something which the rest of | |
972 | the link can deal with. This will normally involve adding an | |
973 | entry to the .plt or .got or some such section, and setting the | |
974 | symbol to point to that. */ | |
b34976b6 | 975 | bfd_boolean (*elf_backend_adjust_dynamic_symbol) |
c39a58e6 | 976 | (struct bfd_link_info *info, struct elf_link_hash_entry *h); |
252b5132 RH |
977 | |
978 | /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker | |
979 | after all the linker input files have been seen but before the | |
980 | section sizes have been set. This is called after | |
981 | ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */ | |
b34976b6 | 982 | bfd_boolean (*elf_backend_always_size_sections) |
c39a58e6 | 983 | (bfd *output_bfd, struct bfd_link_info *info); |
252b5132 RH |
984 | |
985 | /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend | |
986 | linker after all the linker input files have been seen but before | |
987 | the sections sizes have been set. This is called after | |
988 | ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols. | |
989 | It is only called when linking against a dynamic object. It must | |
990 | set the sizes of the dynamic sections, and may fill in their | |
991 | contents as well. The generic ELF linker can handle the .dynsym, | |
992 | .dynstr and .hash sections. This function must handle the | |
993 | .interp section and any sections created by the | |
994 | CREATE_DYNAMIC_SECTIONS entry point. */ | |
b34976b6 | 995 | bfd_boolean (*elf_backend_size_dynamic_sections) |
c39a58e6 | 996 | (bfd *output_bfd, struct bfd_link_info *info); |
252b5132 | 997 | |
74541ad4 AM |
998 | /* Set TEXT_INDEX_SECTION and DATA_INDEX_SECTION, the output sections |
999 | we keep to use as a base for relocs and symbols. */ | |
1000 | void (*elf_backend_init_index_section) | |
1001 | (bfd *output_bfd, struct bfd_link_info *info); | |
1002 | ||
252b5132 RH |
1003 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
1004 | to handle the relocations for a section. | |
1005 | ||
1006 | The relocs are always passed as Rela structures; if the section | |
1007 | actually uses Rel structures, the r_addend field will always be | |
1008 | zero. | |
1009 | ||
1010 | This function is responsible for adjust the section contents as | |
1011 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 1012 | relocatable output file) adjusting the reloc addend as |
252b5132 RH |
1013 | necessary. |
1014 | ||
1015 | This function does not have to worry about setting the reloc | |
1016 | address or the reloc symbol index. | |
1017 | ||
1018 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
1019 | ||
1020 | LOCAL_SECTIONS is an array giving the section in the input file | |
1021 | corresponding to the st_shndx field of each local symbol. | |
1022 | ||
1023 | The global hash table entry for the global symbols can be found | |
1024 | via elf_sym_hashes (input_bfd). | |
1025 | ||
1049f94e | 1026 | When generating relocatable output, this function must handle |
252b5132 RH |
1027 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
1028 | going to be the section symbol corresponding to the output | |
1029 | section, which means that the addend must be adjusted | |
ece5ef60 AM |
1030 | accordingly. |
1031 | ||
1032 | Returns FALSE on error, TRUE on success, 2 if successful and | |
1033 | relocations should be written for this section. */ | |
1034 | int (*elf_backend_relocate_section) | |
c39a58e6 AM |
1035 | (bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd, |
1036 | asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs, | |
1037 | Elf_Internal_Sym *local_syms, asection **local_sections); | |
252b5132 RH |
1038 | |
1039 | /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend | |
1040 | linker just before it writes a symbol out to the .dynsym section. | |
1041 | The processor backend may make any required adjustment to the | |
1042 | symbol. It may also take the opportunity to set contents of the | |
1043 | dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on | |
1044 | all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called | |
1045 | on those symbols which are defined by a dynamic object. */ | |
b34976b6 | 1046 | bfd_boolean (*elf_backend_finish_dynamic_symbol) |
c39a58e6 AM |
1047 | (bfd *output_bfd, struct bfd_link_info *info, |
1048 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym); | |
252b5132 RH |
1049 | |
1050 | /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend | |
1051 | linker just before it writes all the dynamic sections out to the | |
1052 | output file. The FINISH_DYNAMIC_SYMBOL will have been called on | |
1053 | all dynamic symbols. */ | |
b34976b6 | 1054 | bfd_boolean (*elf_backend_finish_dynamic_sections) |
c39a58e6 | 1055 | (bfd *output_bfd, struct bfd_link_info *info); |
252b5132 RH |
1056 | |
1057 | /* A function to do any beginning processing needed for the ELF file | |
1058 | before building the ELF headers and computing file positions. */ | |
1059 | void (*elf_backend_begin_write_processing) | |
c39a58e6 | 1060 | (bfd *, struct bfd_link_info *); |
252b5132 RH |
1061 | |
1062 | /* A function to do any final processing needed for the ELF file | |
b34976b6 | 1063 | before writing it out. The LINKER argument is TRUE if this BFD |
252b5132 RH |
1064 | was created by the ELF backend linker. */ |
1065 | void (*elf_backend_final_write_processing) | |
c39a58e6 | 1066 | (bfd *, bfd_boolean linker); |
252b5132 RH |
1067 | |
1068 | /* This function is called by get_program_header_size. It should | |
1069 | return the number of additional program segments which this BFD | |
1070 | will need. It should return -1 on error. */ | |
dc810e39 | 1071 | int (*elf_backend_additional_program_headers) |
a6b96beb | 1072 | (bfd *, struct bfd_link_info *); |
252b5132 RH |
1073 | |
1074 | /* This function is called to modify an existing segment map in a | |
1075 | backend specific fashion. */ | |
b34976b6 | 1076 | bfd_boolean (*elf_backend_modify_segment_map) |
c84fca4d | 1077 | (bfd *, struct bfd_link_info *); |
252b5132 | 1078 | |
e36284ab AM |
1079 | /* This function is called to modify program headers just before |
1080 | they are written. */ | |
1081 | bfd_boolean (*elf_backend_modify_program_headers) | |
1082 | (bfd *, struct bfd_link_info *); | |
1083 | ||
1a9ccd70 NC |
1084 | /* This function is called to see if the PHDR header should be |
1085 | checked for validity. */ | |
1086 | bfd_boolean (*elf_backend_allow_non_load_phdr) | |
1087 | (bfd *, const Elf_Internal_Phdr *, unsigned); | |
1088 | ||
74f0fb50 AM |
1089 | /* This function is called before section garbage collection to |
1090 | mark entry symbol sections. */ | |
1091 | void (*gc_keep) | |
1092 | (struct bfd_link_info *); | |
1093 | ||
64d03ab5 AM |
1094 | /* This function is called during section garbage collection to |
1095 | mark sections that define global symbols. */ | |
1096 | bfd_boolean (*gc_mark_dynamic_ref) | |
74f0fb50 | 1097 | (struct elf_link_hash_entry *, void *); |
64d03ab5 | 1098 | |
252b5132 | 1099 | /* This function is called during section gc to discover the section a |
1e2f5b6e | 1100 | particular relocation refers to. */ |
6a5bb875 PB |
1101 | elf_gc_mark_hook_fn gc_mark_hook; |
1102 | ||
1103 | /* This function, if defined, is called after the first gc marking pass | |
1104 | to allow the backend to mark additional sections. */ | |
1105 | bfd_boolean (*gc_mark_extra_sections) | |
74f0fb50 | 1106 | (struct bfd_link_info *, elf_gc_mark_hook_fn); |
252b5132 RH |
1107 | |
1108 | /* This function, if defined, is called during the sweep phase of gc | |
1109 | in order that a backend might update any data structures it might | |
1110 | be maintaining. */ | |
b34976b6 | 1111 | bfd_boolean (*gc_sweep_hook) |
74f0fb50 | 1112 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); |
252b5132 | 1113 | |
e6c51ed4 NC |
1114 | /* This function, if defined, is called after the ELF headers have |
1115 | been created. This allows for things like the OS and ABI versions | |
1116 | to be changed. */ | |
1117 | void (*elf_backend_post_process_headers) | |
c39a58e6 | 1118 | (bfd *, struct bfd_link_info *); |
e6c51ed4 | 1119 | |
587ff49e RH |
1120 | /* This function, if defined, prints a symbol to file and returns the |
1121 | name of the symbol to be printed. It should return NULL to fall | |
1122 | back to default symbol printing. */ | |
1123 | const char *(*elf_backend_print_symbol_all) | |
c39a58e6 | 1124 | (bfd *, void *, asymbol *); |
587ff49e RH |
1125 | |
1126 | /* This function, if defined, is called after all local symbols and | |
4cc11e76 | 1127 | global symbols converted to locals are emitted into the symtab |
4e617b1e | 1128 | section. It allows the backend to emit special local symbols |
587ff49e | 1129 | not handled in the hash table. */ |
4e617b1e PB |
1130 | bfd_boolean (*elf_backend_output_arch_local_syms) |
1131 | (bfd *, struct bfd_link_info *, void *, | |
1132 | bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *, | |
1133 | struct elf_link_hash_entry *)); | |
1134 | ||
1135 | /* This function, if defined, is called after all symbols are emitted | |
1136 | into the symtab section. It allows the backend to emit special | |
1137 | global symbols not handled in the hash table. */ | |
b34976b6 | 1138 | bfd_boolean (*elf_backend_output_arch_syms) |
c39a58e6 | 1139 | (bfd *, struct bfd_link_info *, void *, |
754021d0 AM |
1140 | bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *, |
1141 | struct elf_link_hash_entry *)); | |
587ff49e | 1142 | |
76359541 TP |
1143 | /* Filter what symbols of the output file to include in the import |
1144 | library if one is created. */ | |
1145 | unsigned int (*elf_backend_filter_implib_symbols) | |
1146 | (bfd *, struct bfd_link_info *, asymbol **, long); | |
1147 | ||
d4c88bbb | 1148 | /* Copy any information related to dynamic linking from a pre-existing |
0a991dfe AM |
1149 | symbol to a newly created symbol. Also called to copy flags and |
1150 | other back-end info to a weakdef, in which case the symbol is not | |
1151 | newly created and plt/got refcounts and dynamic indices should not | |
1152 | be copied. */ | |
c61b8717 | 1153 | void (*elf_backend_copy_indirect_symbol) |
fcfa13d2 | 1154 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
c39a58e6 | 1155 | struct elf_link_hash_entry *); |
c61b8717 RH |
1156 | |
1157 | /* Modify any information related to dynamic linking such that the | |
1158 | symbol is not exported. */ | |
1159 | void (*elf_backend_hide_symbol) | |
c39a58e6 | 1160 | (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean); |
c61b8717 | 1161 | |
508c3946 L |
1162 | /* A function to do additional symbol fixup, called by |
1163 | _bfd_elf_fix_symbol_flags. */ | |
1164 | bfd_boolean (*elf_backend_fixup_symbol) | |
1165 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
1166 | ||
9bf7216d KK |
1167 | /* Merge the backend specific symbol attribute. */ |
1168 | void (*elf_backend_merge_symbol_attribute) | |
1169 | (struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean, | |
1170 | bfd_boolean); | |
1171 | ||
ad9563d6 CM |
1172 | /* This function, if defined, will return a string containing the |
1173 | name of a target-specific dynamic tag. */ | |
1174 | char *(*elf_backend_get_target_dtag) | |
1175 | (bfd_vma); | |
1176 | ||
12ac1cf5 NC |
1177 | /* Decide whether an undefined symbol is special and can be ignored. |
1178 | This is the case for OPTIONAL symbols on IRIX. */ | |
1179 | bfd_boolean (*elf_backend_ignore_undef_symbol) | |
1180 | (struct elf_link_hash_entry *); | |
1181 | ||
9317eacc CM |
1182 | /* Emit relocations. Overrides default routine for emitting relocs, |
1183 | except during a relocatable link, or if all relocs are being emitted. */ | |
b34976b6 | 1184 | bfd_boolean (*elf_backend_emit_relocs) |
eac338cf PB |
1185 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, |
1186 | struct elf_link_hash_entry **); | |
9317eacc | 1187 | |
9eaff861 AO |
1188 | /* Update relocations. It is allowed to change the number and the order. |
1189 | In such a case hashes should be invalidated. */ | |
1190 | void (*elf_backend_update_relocs) | |
1191 | (asection *, struct bfd_elf_section_reloc_data *); | |
1192 | ||
9317eacc CM |
1193 | /* Count relocations. Not called for relocatable links |
1194 | or if all relocs are being preserved in the output. */ | |
1195 | unsigned int (*elf_backend_count_relocs) | |
58217f29 | 1196 | (struct bfd_link_info *, asection *); |
9317eacc | 1197 | |
491d01d3 YU |
1198 | /* Count additionals relocations. Called for relocatable links if |
1199 | additional relocations needs to be created. */ | |
1200 | unsigned int (*elf_backend_count_additional_relocs) | |
1201 | (asection *); | |
1202 | ||
28dbcedc AM |
1203 | /* Say whether to sort relocs output by ld -r and ld --emit-relocs, |
1204 | by r_offset. If NULL, default to true. */ | |
1205 | bfd_boolean (*sort_relocs_p) | |
1206 | (asection *); | |
1207 | ||
bb0082d6 | 1208 | /* This function, if defined, is called when an NT_PRSTATUS note is found |
183e98be | 1209 | in a core file. */ |
b34976b6 | 1210 | bfd_boolean (*elf_backend_grok_prstatus) |
c39a58e6 | 1211 | (bfd *, Elf_Internal_Note *); |
bb0082d6 AM |
1212 | |
1213 | /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO | |
183e98be | 1214 | note is found in a core file. */ |
b34976b6 | 1215 | bfd_boolean (*elf_backend_grok_psinfo) |
c39a58e6 | 1216 | (bfd *, Elf_Internal_Note *); |
bb0082d6 | 1217 | |
183e98be AM |
1218 | /* This function, if defined, is called to write a note to a corefile. */ |
1219 | char *(*elf_backend_write_core_note) | |
1220 | (bfd *abfd, char *buf, int *bufsiz, int note_type, ...); | |
1221 | ||
ae17ab41 CM |
1222 | /* This function, if defined, is called to convert target-specific |
1223 | section flag names into hex values. */ | |
1224 | flagword (*elf_backend_lookup_section_flags_hook) | |
1225 | (char *); | |
1226 | ||
db6751f2 | 1227 | /* This function returns class of a reloc type. */ |
f51e552e | 1228 | enum elf_reloc_type_class (*elf_backend_reloc_type_class) |
7e612e98 | 1229 | (const struct bfd_link_info *, const asection *, const Elf_Internal_Rela *); |
db6751f2 | 1230 | |
73d074b4 DJ |
1231 | /* This function, if defined, removes information about discarded functions |
1232 | from other sections which mention them. */ | |
b34976b6 | 1233 | bfd_boolean (*elf_backend_discard_info) |
c39a58e6 | 1234 | (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *); |
73d074b4 DJ |
1235 | |
1236 | /* This function, if defined, signals that the function above has removed | |
1237 | the discarded relocations for this section. */ | |
b34976b6 | 1238 | bfd_boolean (*elf_backend_ignore_discarded_relocs) |
c39a58e6 | 1239 | (asection *); |
73d074b4 | 1240 | |
8a696751 AM |
1241 | /* What to do when ld finds relocations against symbols defined in |
1242 | discarded sections. */ | |
1243 | unsigned int (*action_discarded) | |
1244 | (asection *); | |
1245 | ||
8c946ed5 RS |
1246 | /* This function returns the width of FDE pointers in bytes, or 0 if |
1247 | that can't be determined for some reason. The default definition | |
1248 | goes by the bfd's EI_CLASS. */ | |
1249 | unsigned int (*elf_backend_eh_frame_address_size) | |
1250 | (bfd *, asection *); | |
1251 | ||
ec3391e7 AO |
1252 | /* These functions tell elf-eh-frame whether to attempt to turn |
1253 | absolute or lsda encodings into pc-relative ones. The default | |
1254 | definition enables these transformations. */ | |
1255 | bfd_boolean (*elf_backend_can_make_relative_eh_frame) | |
1256 | (bfd *, struct bfd_link_info *, asection *); | |
1257 | bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame) | |
1258 | (bfd *, struct bfd_link_info *, asection *); | |
1259 | ||
1260 | /* This function returns an encoding after computing the encoded | |
1261 | value (and storing it in ENCODED) for the given OFFSET into OSEC, | |
1262 | to be stored in at LOC_OFFSET into the LOC_SEC input section. | |
1263 | The default definition chooses a 32-bit PC-relative encoding. */ | |
1264 | bfd_byte (*elf_backend_encode_eh_address) | |
1265 | (bfd *abfd, struct bfd_link_info *info, | |
1266 | asection *osec, bfd_vma offset, | |
1267 | asection *loc_sec, bfd_vma loc_offset, | |
1268 | bfd_vma *encoded); | |
1269 | ||
73d074b4 | 1270 | /* This function, if defined, may write out the given section. |
b34976b6 AM |
1271 | Returns TRUE if it did so and FALSE if the caller should. */ |
1272 | bfd_boolean (*elf_backend_write_section) | |
c7b8f16e | 1273 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
73d074b4 | 1274 | |
c6e90b02 TS |
1275 | /* The level of IRIX compatibility we're striving for. |
1276 | MIPS ELF specific function. */ | |
1277 | irix_compat_t (*elf_backend_mips_irix_compat) | |
c39a58e6 | 1278 | (bfd *); |
c6e90b02 TS |
1279 | |
1280 | reloc_howto_type *(*elf_backend_mips_rtype_to_howto) | |
c39a58e6 | 1281 | (unsigned int, bfd_boolean); |
c6e90b02 | 1282 | |
252b5132 RH |
1283 | /* The swapping table to use when dealing with ECOFF information. |
1284 | Used for the MIPS ELF .mdebug section. */ | |
1285 | const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap; | |
1286 | ||
8d6337fe RM |
1287 | /* This function implements `bfd_elf_bfd_from_remote_memory'; |
1288 | see elf.c, elfcode.h. */ | |
1289 | bfd *(*elf_backend_bfd_from_remote_memory) | |
f0a5d95a | 1290 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
5979d6b6 AM |
1291 | int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr, |
1292 | bfd_size_type len)); | |
8d6337fe | 1293 | |
4c45e5c9 JJ |
1294 | /* This function is used by `_bfd_elf_get_synthetic_symtab'; |
1295 | see elf.c. */ | |
1296 | bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *); | |
1297 | ||
a4d8e49b L |
1298 | /* Is symbol defined in common section? */ |
1299 | bfd_boolean (*common_definition) (Elf_Internal_Sym *); | |
1300 | ||
1301 | /* Return a common section index for section. */ | |
1302 | unsigned int (*common_section_index) (asection *); | |
1303 | ||
1304 | /* Return a common section for section. */ | |
1305 | asection *(*common_section) (asection *); | |
1306 | ||
1307 | /* Return TRUE if we can merge 2 definitions. */ | |
5d13b3b3 AM |
1308 | bfd_boolean (*merge_symbol) (struct elf_link_hash_entry *, |
1309 | const Elf_Internal_Sym *, asection **, | |
1310 | bfd_boolean, bfd_boolean, | |
1311 | bfd *, const asection *); | |
a4d8e49b | 1312 | |
fdc90cb4 JJ |
1313 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
1314 | bfd_boolean (*elf_hash_symbol) (struct elf_link_hash_entry *); | |
1315 | ||
fcb93ecf PB |
1316 | /* Return TRUE if type is a function symbol type. */ |
1317 | bfd_boolean (*is_function_type) (unsigned int type); | |
1318 | ||
aef36ac1 AM |
1319 | /* If the ELF symbol SYM might be a function in SEC, return the |
1320 | function size and set *CODE_OFF to the function's entry point, | |
1321 | otherwise return zero. */ | |
1322 | bfd_size_type (*maybe_function_sym) (const asymbol *sym, asection *sec, | |
1323 | bfd_vma *code_off); | |
9f296da3 | 1324 | |
bd53a53a L |
1325 | /* Return the section which RELOC_SEC applies to. */ |
1326 | asection *(*get_reloc_section) (asection *reloc_sec); | |
1327 | ||
5522f910 NC |
1328 | /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which |
1329 | has a type >= SHT_LOOS. Returns TRUE if the fields were initialised, | |
1330 | FALSE otherwise. Can be called multiple times for a given section, | |
1331 | until it returns TRUE. Most of the times it is called ISECTION will be | |
1332 | set to an input section that might be associated with the output section. | |
1333 | The last time that it is called, ISECTION will be set to NULL. */ | |
1334 | bfd_boolean (*elf_backend_copy_special_section_fields) | |
1335 | (const bfd *ibfd, bfd *obfd, const Elf_Internal_Shdr *isection, | |
1336 | Elf_Internal_Shdr *osection); | |
84865015 | 1337 | |
185d09ad | 1338 | /* Used to handle bad SHF_LINK_ORDER input. */ |
52d45da3 | 1339 | void (*link_order_error_handler) (const char *, ...); |
185d09ad | 1340 | |
4c45e5c9 JJ |
1341 | /* Name of the PLT relocation section. */ |
1342 | const char *relplt_name; | |
1343 | ||
252b5132 RH |
1344 | /* Alternate EM_xxxx machine codes for this backend. */ |
1345 | int elf_machine_alt1; | |
1346 | int elf_machine_alt2; | |
1347 | ||
1348 | const struct elf_size_info *s; | |
1349 | ||
29ef7005 L |
1350 | /* An array of target specific special sections. */ |
1351 | const struct bfd_elf_special_section *special_sections; | |
1352 | ||
6f2f2c9d DJ |
1353 | /* The size in bytes of the header for the GOT. This includes the |
1354 | so-called reserved entries on some systems. */ | |
252b5132 | 1355 | bfd_vma got_header_size; |
252b5132 | 1356 | |
10455f89 HPN |
1357 | /* The size of the GOT entry for the symbol pointed to by H if non-NULL, |
1358 | otherwise by the local symbol with index SYMNDX in IBFD. */ | |
1359 | bfd_vma (*got_elt_size) (bfd *, struct bfd_link_info *, | |
1360 | struct elf_link_hash_entry *h, | |
1361 | bfd *ibfd, unsigned long symndx); | |
1362 | ||
104d59d1 JM |
1363 | /* The vendor name to use for a processor-standard attributes section. */ |
1364 | const char *obj_attrs_vendor; | |
1365 | ||
1366 | /* The section name to use for a processor-standard attributes section. */ | |
1367 | const char *obj_attrs_section; | |
1368 | ||
1369 | /* Return 1, 2 or 3 to indicate what type of arguments a | |
1370 | processor-specific tag takes. */ | |
1371 | int (*obj_attrs_arg_type) (int); | |
1372 | ||
1373 | /* The section type to use for an attributes section. */ | |
1374 | unsigned int obj_attrs_section_type; | |
1375 | ||
3de4a297 JM |
1376 | /* This function determines the order in which any attributes are |
1377 | written. It must be defined for input in the range | |
1378 | LEAST_KNOWN_OBJ_ATTRIBUTE..NUM_KNOWN_OBJ_ATTRIBUTES-1 (this range | |
1379 | is used in order to make unity easy). The returned value is the | |
1380 | actual tag number to place in the input position. */ | |
5aa6ff7c AS |
1381 | int (*obj_attrs_order) (int); |
1382 | ||
e8b36cd1 JM |
1383 | /* Handle merging unknown attributes; either warn and return TRUE, |
1384 | or give an error and return FALSE. */ | |
1385 | bfd_boolean (*obj_attrs_handle_unknown) (bfd *, int); | |
1386 | ||
2f0c68f2 CM |
1387 | /* Encoding used for compact EH tables. */ |
1388 | int (*compact_eh_encoding) (struct bfd_link_info *); | |
1389 | ||
1390 | /* Opcode representing no unwind. */ | |
1391 | int (*cant_unwind_opcode) (struct bfd_link_info *); | |
1392 | ||
7dc98aea RO |
1393 | /* This is non-zero if static TLS segments require a special alignment. */ |
1394 | unsigned static_tls_alignment; | |
1395 | ||
9eaff861 | 1396 | /* Alignment for the PT_GNU_STACK segment. */ |
04c3a755 NS |
1397 | unsigned stack_align; |
1398 | ||
84865015 NC |
1399 | /* Flag bits to assign to a section of type SHT_STRTAB. */ |
1400 | unsigned long elf_strtab_flags; | |
1401 | ||
b34976b6 AM |
1402 | /* This is TRUE if the linker should act like collect and gather |
1403 | global constructors and destructors by name. This is TRUE for | |
86dc0f79 RH |
1404 | MIPS ELF because the Irix 5 tools can not handle the .init |
1405 | section. */ | |
1406 | unsigned collect : 1; | |
1407 | ||
b34976b6 AM |
1408 | /* This is TRUE if the linker should ignore changes to the type of a |
1409 | symbol. This is TRUE for MIPS ELF because some Irix 5 objects | |
86dc0f79 RH |
1410 | record undefined functions as STT_OBJECT although the definitions |
1411 | are STT_FUNC. */ | |
1412 | unsigned type_change_ok : 1; | |
1413 | ||
bf572ba0 MM |
1414 | /* Whether the backend may use REL relocations. (Some backends use |
1415 | both REL and RELA relocations, and this flag is set for those | |
1416 | backends.) */ | |
1417 | unsigned may_use_rel_p : 1; | |
60bcf0fa | 1418 | |
bf572ba0 MM |
1419 | /* Whether the backend may use RELA relocations. (Some backends use |
1420 | both REL and RELA relocations, and this flag is set for those | |
1421 | backends.) */ | |
1422 | unsigned may_use_rela_p : 1; | |
1423 | ||
1424 | /* Whether the default relocation type is RELA. If a backend with | |
1425 | this flag set wants REL relocations for a particular section, | |
1426 | it must note that explicitly. Similarly, if this flag is clear, | |
60bcf0fa NC |
1427 | and the backend wants RELA relocations for a particular |
1428 | section. */ | |
bf572ba0 MM |
1429 | unsigned default_use_rela_p : 1; |
1430 | ||
d35fd659 RS |
1431 | /* True if PLT and copy relocations should be RELA by default. */ |
1432 | unsigned rela_plts_and_copies_p : 1; | |
1433 | ||
b491616a AM |
1434 | /* Set if RELA relocations for a relocatable link can be handled by |
1435 | generic code. Backends that set this flag need do nothing in the | |
1436 | backend relocate_section routine for relocatable linking. */ | |
1437 | unsigned rela_normal : 1; | |
1438 | ||
64f52338 AM |
1439 | /* Set if DT_REL/DT_RELA/DT_RELSZ/DT_RELASZ should not include PLT |
1440 | relocations. */ | |
1441 | unsigned dtrel_excludes_plt : 1; | |
1442 | ||
b34976b6 | 1443 | /* TRUE if addresses "naturally" sign extend. This is used when |
86dc0f79 RH |
1444 | swapping in from Elf32 when BFD64. */ |
1445 | unsigned sign_extend_vma : 1; | |
1446 | ||
252b5132 RH |
1447 | unsigned want_got_plt : 1; |
1448 | unsigned plt_readonly : 1; | |
1449 | unsigned want_plt_sym : 1; | |
1450 | unsigned plt_not_loaded : 1; | |
1451 | unsigned plt_alignment : 4; | |
1452 | unsigned can_gc_sections : 1; | |
51b64d56 | 1453 | unsigned can_refcount : 1; |
2517a57f | 1454 | unsigned want_got_sym : 1; |
3018b441 | 1455 | unsigned want_dynbss : 1; |
5474d94f | 1456 | unsigned want_dynrelro : 1; |
6bfdb61b AM |
1457 | |
1458 | /* Targets which do not support physical addressing often require | |
1459 | that the p_paddr field in the section header to be set to zero. | |
1460 | This field indicates whether this behavior is required. */ | |
5e8d7549 | 1461 | unsigned want_p_paddr_set_to_zero : 1; |
6bfdb61b AM |
1462 | |
1463 | /* True if an object file lacking a .note.GNU-stack section | |
1464 | should be assumed to be requesting exec stack. At least one | |
1465 | other file in the link needs to have a .note.GNU-stack section | |
1466 | for a PT_GNU_STACK segment to be created. */ | |
1467 | unsigned default_execstack : 1; | |
53291d1f AM |
1468 | |
1469 | /* True if elf_section_data(sec)->this_hdr.contents is sec->rawsize | |
1470 | in length rather than sec->size in length, if sec->rawsize is | |
1471 | non-zero and smaller than sec->size. */ | |
1472 | unsigned caches_rawsize : 1; | |
f7483970 L |
1473 | |
1474 | /* Address of protected data defined in the shared library may be | |
1475 | external, i.e., due to copy relocation. */ | |
1476 | unsigned extern_protected_data : 1; | |
252b5132 RH |
1477 | }; |
1478 | ||
d4730f92 BS |
1479 | /* Information about reloc sections associated with a bfd_elf_section_data |
1480 | structure. */ | |
1481 | struct bfd_elf_section_reloc_data | |
1482 | { | |
1483 | /* The ELF header for the reloc section associated with this | |
1484 | section, if any. */ | |
1485 | Elf_Internal_Shdr *hdr; | |
1486 | /* The number of relocations currently assigned to HDR. */ | |
1487 | unsigned int count; | |
1488 | /* The ELF section number of the reloc section. Only used for an | |
1489 | output file. */ | |
1490 | int idx; | |
1491 | /* Used by the backend linker to store the symbol hash table entries | |
1492 | associated with relocs against global symbols. */ | |
1493 | struct elf_link_hash_entry **hashes; | |
1494 | }; | |
1495 | ||
252b5132 RH |
1496 | /* Information stored for each BFD section in an ELF file. This |
1497 | structure is allocated by elf_new_section_hook. */ | |
1498 | ||
1499 | struct bfd_elf_section_data | |
1500 | { | |
1501 | /* The ELF header for this section. */ | |
1502 | Elf_Internal_Shdr this_hdr; | |
0c715baa | 1503 | |
b9c361e0 JL |
1504 | /* INPUT_SECTION_FLAGS if specified in the linker script. */ |
1505 | struct flag_info *section_flag_info; | |
1506 | ||
d4730f92 BS |
1507 | /* Information about the REL and RELA reloc sections associated |
1508 | with this section, if any. */ | |
1509 | struct bfd_elf_section_reloc_data rel, rela; | |
0c715baa | 1510 | |
6dc132d9 | 1511 | /* The ELF section number of this section. */ |
252b5132 | 1512 | int this_idx; |
0c715baa | 1513 | |
f0abc2a1 AM |
1514 | /* Used by the backend linker when generating a shared library to |
1515 | record the dynamic symbol index for a section symbol | |
1516 | corresponding to this section. A value of 0 means that there is | |
1517 | no dynamic symbol for this section. */ | |
1518 | int dynindx; | |
1519 | ||
38ce5b11 L |
1520 | /* A pointer to the linked-to section for SHF_LINK_ORDER. */ |
1521 | asection *linked_to; | |
1522 | ||
252b5132 RH |
1523 | /* A pointer to the swapped relocs. If the section uses REL relocs, |
1524 | rather than RELA, all the r_addend fields will be zero. This | |
1525 | pointer may be NULL. It is used by the backend linker. */ | |
1526 | Elf_Internal_Rela *relocs; | |
0c715baa | 1527 | |
f0abc2a1 AM |
1528 | /* A pointer to a linked list tracking dynamic relocs copied for |
1529 | local symbols. */ | |
c39a58e6 | 1530 | void *local_dynrel; |
0c715baa | 1531 | |
f0abc2a1 AM |
1532 | /* A pointer to the bfd section used for dynamic relocs. */ |
1533 | asection *sreloc; | |
0c715baa | 1534 | |
1126897b AM |
1535 | union { |
1536 | /* Group name, if this section is a member of a group. */ | |
1537 | const char *name; | |
1538 | ||
1539 | /* Group signature sym, if this is the SHT_GROUP section. */ | |
fc0a2244 | 1540 | struct bfd_symbol *id; |
1126897b | 1541 | } group; |
dbb410c3 | 1542 | |
b0956e01 AM |
1543 | /* For a member of a group, points to the SHT_GROUP section. |
1544 | NULL for the SHT_GROUP section itself and non-group sections. */ | |
3d7f7666 L |
1545 | asection *sec_group; |
1546 | ||
b0956e01 AM |
1547 | /* A linked list of member sections in the group. Circular when used by |
1548 | the linker. For the SHT_GROUP section, points at first member. */ | |
dbb410c3 AM |
1549 | asection *next_in_group; |
1550 | ||
9d0a14d3 RS |
1551 | /* The FDEs associated with this section. The u.fde.next_in_section |
1552 | field acts as a chain pointer. */ | |
1553 | struct eh_cie_fde *fde_list; | |
1554 | ||
2f0c68f2 CM |
1555 | /* Link from a text section to its .eh_frame_entry section. */ |
1556 | asection *eh_frame_entry; | |
1557 | ||
f0abc2a1 | 1558 | /* A pointer used for various section optimizations. */ |
c39a58e6 | 1559 | void *sec_info; |
252b5132 RH |
1560 | }; |
1561 | ||
9f296da3 | 1562 | #define elf_section_data(sec) ((struct bfd_elf_section_data*)(sec)->used_by_bfd) |
38ce5b11 | 1563 | #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to) |
9f296da3 AM |
1564 | #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type) |
1565 | #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags) | |
1566 | #define elf_group_name(sec) (elf_section_data(sec)->group.name) | |
1567 | #define elf_group_id(sec) (elf_section_data(sec)->group.id) | |
1568 | #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group) | |
1569 | #define elf_fde_list(sec) (elf_section_data(sec)->fde_list) | |
3d7f7666 | 1570 | #define elf_sec_group(sec) (elf_section_data(sec)->sec_group) |
2f0c68f2 | 1571 | #define elf_section_eh_frame_entry(sec) (elf_section_data(sec)->eh_frame_entry) |
252b5132 | 1572 | |
24718e3b | 1573 | #define xvec_get_elf_backend_data(xvec) \ |
f7231afc | 1574 | ((const struct elf_backend_data *) (xvec)->backend_data) |
24718e3b | 1575 | |
252b5132 | 1576 | #define get_elf_backend_data(abfd) \ |
24718e3b | 1577 | xvec_get_elf_backend_data ((abfd)->xvec) |
252b5132 | 1578 | |
3de4a297 JM |
1579 | /* The least object attributes (within an attributes subsection) known |
1580 | for any target. Some code assumes that the value 0 is not used and | |
1581 | the field for that attribute can instead be used as a marker to | |
1582 | indicate that attributes have been initialized. */ | |
59e6276b | 1583 | #define LEAST_KNOWN_OBJ_ATTRIBUTE 2 |
3de4a297 | 1584 | |
104d59d1 | 1585 | /* The maximum number of known object attributes for any target. */ |
91e22acd | 1586 | #define NUM_KNOWN_OBJ_ATTRIBUTES 71 |
104d59d1 | 1587 | |
3483fe2e AS |
1588 | /* The value of an object attribute. The type indicates whether the attribute |
1589 | holds and integer, a string, or both. It can also indicate that there can | |
1590 | be no default (i.e. all values must be written to file, even zero). */ | |
104d59d1 JM |
1591 | |
1592 | typedef struct obj_attribute | |
1593 | { | |
3483fe2e AS |
1594 | #define ATTR_TYPE_FLAG_INT_VAL (1 << 0) |
1595 | #define ATTR_TYPE_FLAG_STR_VAL (1 << 1) | |
1596 | #define ATTR_TYPE_FLAG_NO_DEFAULT (1 << 2) | |
1597 | ||
1598 | #define ATTR_TYPE_HAS_INT_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_INT_VAL) | |
1599 | #define ATTR_TYPE_HAS_STR_VAL(TYPE) ((TYPE) & ATTR_TYPE_FLAG_STR_VAL) | |
1600 | #define ATTR_TYPE_HAS_NO_DEFAULT(TYPE) ((TYPE) & ATTR_TYPE_FLAG_NO_DEFAULT) | |
1601 | ||
104d59d1 JM |
1602 | int type; |
1603 | unsigned int i; | |
1604 | char *s; | |
1605 | } obj_attribute; | |
1606 | ||
1607 | typedef struct obj_attribute_list | |
1608 | { | |
1609 | struct obj_attribute_list *next; | |
5ee4a1ca | 1610 | unsigned int tag; |
104d59d1 JM |
1611 | obj_attribute attr; |
1612 | } obj_attribute_list; | |
1613 | ||
1614 | /* Object attributes may either be defined by the processor ABI, index | |
1615 | OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific | |
1616 | (and possibly also processor-specific), index OBJ_ATTR_GNU. */ | |
1617 | #define OBJ_ATTR_PROC 0 | |
1618 | #define OBJ_ATTR_GNU 1 | |
1619 | #define OBJ_ATTR_FIRST OBJ_ATTR_PROC | |
1620 | #define OBJ_ATTR_LAST OBJ_ATTR_GNU | |
1621 | ||
1622 | /* The following object attribute tags are taken as generic, for all | |
1623 | targets and for "gnu" where there is no target standard. */ | |
1624 | enum | |
1625 | { | |
1626 | Tag_NULL = 0, | |
1627 | Tag_File = 1, | |
1628 | Tag_Section = 2, | |
1629 | Tag_Symbol = 3, | |
1630 | Tag_compatibility = 32 | |
1631 | }; | |
1632 | ||
e21e5835 NC |
1633 | /* The following struct stores information about every SystemTap section |
1634 | found in the object file. */ | |
1635 | struct sdt_note | |
1636 | { | |
1637 | struct sdt_note *next; | |
1638 | bfd_size_type size; | |
1639 | bfd_byte data[1]; | |
1640 | }; | |
1641 | ||
228e534f AM |
1642 | /* tdata information grabbed from an elf core file. */ |
1643 | struct core_elf_obj_tdata | |
1644 | { | |
1645 | int signal; | |
1646 | int pid; | |
1647 | int lwpid; | |
1648 | char* program; | |
1649 | char* command; | |
1650 | }; | |
1651 | ||
c0355132 AM |
1652 | /* Extra tdata information held for output ELF BFDs. */ |
1653 | struct output_elf_obj_tdata | |
1654 | { | |
1655 | struct elf_segment_map *seg_map; | |
1656 | struct elf_strtab_hash *strtab_ptr; | |
1657 | ||
1658 | /* STT_SECTION symbols for each section */ | |
1659 | asymbol **section_syms; | |
1660 | ||
1661 | /* Used to determine if PT_GNU_EH_FRAME segment header should be | |
1662 | created. */ | |
1663 | asection *eh_frame_hdr; | |
1664 | ||
1665 | /* NT_GNU_BUILD_ID note type info. */ | |
1666 | struct | |
1667 | { | |
1668 | bfd_boolean (*after_write_object_contents) (bfd *); | |
1669 | const char *style; | |
1670 | asection *sec; | |
1671 | } build_id; | |
1672 | ||
1673 | /* Records the result of `get_program_header_size'. */ | |
1674 | bfd_size_type program_header_size; | |
1675 | ||
1676 | /* Used when laying out sections. */ | |
1677 | file_ptr next_file_pos; | |
1678 | ||
1679 | int num_section_syms; | |
1680 | unsigned int shstrtab_section, strtab_section; | |
1681 | ||
1682 | /* Segment flags for the PT_GNU_STACK segment. */ | |
1683 | unsigned int stack_flags; | |
1684 | ||
1685 | /* This is set to TRUE if the object was created by the backend | |
1686 | linker. */ | |
1687 | bfd_boolean linker; | |
1688 | ||
1689 | /* Used to determine if the e_flags field has been initialized */ | |
1690 | bfd_boolean flags_init; | |
1691 | }; | |
1692 | ||
13a2df29 L |
1693 | /* Indicate if the bfd contains symbols that have the STT_GNU_IFUNC |
1694 | symbol type or STB_GNU_UNIQUE binding. Used to set the osabi | |
1695 | field in the ELF header structure. */ | |
1696 | enum elf_gnu_symbols | |
9eaff861 AO |
1697 | { |
1698 | elf_gnu_symbol_none = 0, | |
1699 | elf_gnu_symbol_any = 1 << 0, | |
1700 | elf_gnu_symbol_ifunc = (elf_gnu_symbol_any | 1 << 1), | |
1701 | elf_gnu_symbol_unique = (elf_gnu_symbol_any | 1 << 2), | |
1702 | elf_gnu_symbol_all = (elf_gnu_symbol_ifunc | elf_gnu_symbol_unique) | |
1703 | }; | |
13a2df29 | 1704 | |
6a40cf0c NC |
1705 | typedef struct elf_section_list |
1706 | { | |
1707 | Elf_Internal_Shdr hdr; | |
1708 | unsigned int ndx; | |
1709 | struct elf_section_list * next; | |
1710 | } elf_section_list; | |
9eaff861 | 1711 | |
252b5132 RH |
1712 | /* Some private data is stashed away for future use using the tdata pointer |
1713 | in the bfd structure. */ | |
1714 | ||
1715 | struct elf_obj_tdata | |
1716 | { | |
1717 | Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */ | |
1718 | Elf_Internal_Shdr **elf_sect_ptr; | |
1719 | Elf_Internal_Phdr *phdr; | |
252b5132 RH |
1720 | Elf_Internal_Shdr symtab_hdr; |
1721 | Elf_Internal_Shdr shstrtab_hdr; | |
1722 | Elf_Internal_Shdr strtab_hdr; | |
1723 | Elf_Internal_Shdr dynsymtab_hdr; | |
1724 | Elf_Internal_Shdr dynstrtab_hdr; | |
1725 | Elf_Internal_Shdr dynversym_hdr; | |
1726 | Elf_Internal_Shdr dynverref_hdr; | |
1727 | Elf_Internal_Shdr dynverdef_hdr; | |
6a40cf0c | 1728 | elf_section_list * symtab_shndx_list; |
dbb410c3 AM |
1729 | bfd_vma gp; /* The gp value */ |
1730 | unsigned int gp_size; /* The gp size */ | |
c0355132 | 1731 | unsigned int num_elf_sections; /* elf_sect_ptr size */ |
dbb410c3 | 1732 | |
252b5132 RH |
1733 | /* A mapping from external symbols to entries in the linker hash |
1734 | table, used when linking. This is indexed by the symbol index | |
1735 | minus the sh_info field of the symbol table header. */ | |
1736 | struct elf_link_hash_entry **sym_hashes; | |
1737 | ||
5cab59f6 AM |
1738 | /* Track usage and final offsets of GOT entries for local symbols. |
1739 | This array is indexed by symbol index. Elements are used | |
1740 | identically to "got" in struct elf_link_hash_entry. */ | |
252b5132 RH |
1741 | union |
1742 | { | |
1743 | bfd_signed_vma *refcounts; | |
1744 | bfd_vma *offsets; | |
5cab59f6 | 1745 | struct got_entry **ents; |
252b5132 RH |
1746 | } local_got; |
1747 | ||
252b5132 RH |
1748 | /* The linker ELF emulation code needs to let the backend ELF linker |
1749 | know what filename should be used for a dynamic object if the | |
1750 | dynamic object is found using a search. The emulation code then | |
1751 | sometimes needs to know what name was actually used. Until the | |
1752 | file has been added to the linker symbol table, this field holds | |
1753 | the name the linker wants. After it has been added, it holds the | |
1754 | name actually used, which will be the DT_SONAME entry if there is | |
1755 | one. */ | |
1756 | const char *dt_name; | |
1757 | ||
7ee314fa | 1758 | /* The linker emulation needs to know what audit libs |
23209a78 | 1759 | are used by a dynamic object. */ |
7ee314fa AM |
1760 | const char *dt_audit; |
1761 | ||
252b5132 | 1762 | /* Used by find_nearest_line entry point. */ |
c39a58e6 | 1763 | void *line_info; |
252b5132 | 1764 | |
3e932841 | 1765 | /* A place to stash dwarf1 info for this bfd. */ |
252b5132 RH |
1766 | struct dwarf1_debug *dwarf1_find_line_info; |
1767 | ||
3e932841 | 1768 | /* A place to stash dwarf2 info for this bfd. */ |
c39a58e6 | 1769 | void *dwarf2_find_line_info; |
252b5132 | 1770 | |
619a703e AM |
1771 | /* Stash away info for yet another find line/function variant. */ |
1772 | void *elf_find_function_cache; | |
1773 | ||
252b5132 RH |
1774 | /* Number of symbol version definitions we are about to emit. */ |
1775 | unsigned int cverdefs; | |
1776 | ||
1777 | /* Number of symbol version references we are about to emit. */ | |
1778 | unsigned int cverrefs; | |
1779 | ||
1780 | /* Symbol version definitions in external objects. */ | |
1781 | Elf_Internal_Verdef *verdef; | |
1782 | ||
1783 | /* Symbol version references to external objects. */ | |
1784 | Elf_Internal_Verneed *verref; | |
1785 | ||
9d0a14d3 RS |
1786 | /* A pointer to the .eh_frame section. */ |
1787 | asection *eh_frame_section; | |
1788 | ||
c0f00686 | 1789 | /* Symbol buffer. */ |
c15f73f9 | 1790 | void *symbuf; |
104d59d1 JM |
1791 | |
1792 | obj_attribute known_obj_attributes[2][NUM_KNOWN_OBJ_ATTRIBUTES]; | |
1793 | obj_attribute_list *other_obj_attributes[2]; | |
20a761b5 | 1794 | |
e21e5835 NC |
1795 | /* Linked-list containing information about every Systemtap section |
1796 | found in the object file. Each section corresponds to one entry | |
1797 | in the list. */ | |
1798 | struct sdt_note *sdt_note_head; | |
1799 | ||
c0355132 AM |
1800 | Elf_Internal_Shdr **group_sect_ptr; |
1801 | int num_group; | |
1802 | ||
6a40cf0c | 1803 | unsigned int symtab_section, dynsymtab_section; |
c0355132 | 1804 | unsigned int dynversym_section, dynverdef_section, dynverref_section; |
d8045f23 | 1805 | |
0ffa91dd NC |
1806 | /* An identifier used to distinguish different target |
1807 | specific extensions to this structure. */ | |
4dfe6ac6 | 1808 | enum elf_target_id object_id; |
228e534f | 1809 | |
c0355132 AM |
1810 | /* Whether a dyanmic object was specified normally on the linker |
1811 | command line, or was specified when --as-needed was in effect, | |
1812 | or was found via a DT_NEEDED entry. */ | |
1813 | enum dynamic_lib_link_class dyn_lib_class; | |
1814 | ||
1815 | /* Irix 5 often screws up the symbol table, sorting local symbols | |
1816 | after global symbols. This flag is set if the symbol table in | |
1817 | this BFD appears to be screwed up. If it is, we ignore the | |
1818 | sh_info field in the symbol table header, and always read all the | |
1819 | symbols. */ | |
1820 | bfd_boolean bad_symtab; | |
1821 | ||
13a2df29 | 1822 | enum elf_gnu_symbols has_gnu_symbols; |
c0355132 | 1823 | |
228e534f AM |
1824 | /* Information grabbed from an elf core file. */ |
1825 | struct core_elf_obj_tdata *core; | |
c0355132 AM |
1826 | |
1827 | /* More information held for output ELF BFDs. */ | |
1828 | struct output_elf_obj_tdata *o; | |
252b5132 RH |
1829 | }; |
1830 | ||
1831 | #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) | |
0ffa91dd NC |
1832 | |
1833 | #define elf_object_id(bfd) (elf_tdata(bfd) -> object_id) | |
c0355132 | 1834 | #define elf_program_header_size(bfd) (elf_tdata(bfd) -> o->program_header_size) |
252b5132 RH |
1835 | #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header) |
1836 | #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr) | |
9ad5cbcf | 1837 | #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections) |
c0355132 AM |
1838 | #define elf_seg_map(bfd) (elf_tdata(bfd) -> o->seg_map) |
1839 | #define elf_next_file_pos(bfd) (elf_tdata(bfd) -> o->next_file_pos) | |
1840 | #define elf_eh_frame_hdr(bfd) (elf_tdata(bfd) -> o->eh_frame_hdr) | |
1841 | #define elf_linker(bfd) (elf_tdata(bfd) -> o->linker) | |
1842 | #define elf_stack_flags(bfd) (elf_tdata(bfd) -> o->stack_flags) | |
1843 | #define elf_shstrtab(bfd) (elf_tdata(bfd) -> o->strtab_ptr) | |
252b5132 | 1844 | #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section) |
6a40cf0c | 1845 | #define elf_symtab_shndx_list(bfd) (elf_tdata(bfd) -> symtab_shndx_list) |
c0355132 AM |
1846 | #define elf_strtab_sec(bfd) (elf_tdata(bfd) -> o->strtab_section) |
1847 | #define elf_shstrtab_sec(bfd) (elf_tdata(bfd) -> o->shstrtab_section) | |
0ffa91dd | 1848 | #define elf_symtab_hdr(bfd) (elf_tdata(bfd) -> symtab_hdr) |
252b5132 RH |
1849 | #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section) |
1850 | #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section) | |
1851 | #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section) | |
1852 | #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section) | |
9d0a14d3 RS |
1853 | #define elf_eh_frame_section(bfd) \ |
1854 | (elf_tdata(bfd) -> eh_frame_section) | |
c0355132 AM |
1855 | #define elf_section_syms(bfd) (elf_tdata(bfd) -> o->section_syms) |
1856 | #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> o->num_section_syms) | |
252b5132 RH |
1857 | #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo) |
1858 | #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus) | |
1859 | #define elf_gp(bfd) (elf_tdata(bfd) -> gp) | |
1860 | #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size) | |
1861 | #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes) | |
1862 | #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts) | |
1863 | #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets) | |
5cab59f6 | 1864 | #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents) |
252b5132 | 1865 | #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name) |
7ee314fa | 1866 | #define elf_dt_audit(bfd) (elf_tdata(bfd) -> dt_audit) |
4a43e768 | 1867 | #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class) |
252b5132 | 1868 | #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab) |
c0355132 | 1869 | #define elf_flags_init(bfd) (elf_tdata(bfd) -> o->flags_init) |
104d59d1 JM |
1870 | #define elf_known_obj_attributes(bfd) (elf_tdata (bfd) -> known_obj_attributes) |
1871 | #define elf_other_obj_attributes(bfd) (elf_tdata (bfd) -> other_obj_attributes) | |
1872 | #define elf_known_obj_attributes_proc(bfd) \ | |
1873 | (elf_known_obj_attributes (bfd) [OBJ_ATTR_PROC]) | |
1874 | #define elf_other_obj_attributes_proc(bfd) \ | |
1875 | (elf_other_obj_attributes (bfd) [OBJ_ATTR_PROC]) | |
252b5132 RH |
1876 | \f |
1877 | extern void _bfd_elf_swap_verdef_in | |
c39a58e6 | 1878 | (bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *); |
252b5132 | 1879 | extern void _bfd_elf_swap_verdef_out |
c39a58e6 | 1880 | (bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *); |
252b5132 | 1881 | extern void _bfd_elf_swap_verdaux_in |
c39a58e6 | 1882 | (bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *); |
252b5132 | 1883 | extern void _bfd_elf_swap_verdaux_out |
c39a58e6 | 1884 | (bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *); |
252b5132 | 1885 | extern void _bfd_elf_swap_verneed_in |
c39a58e6 | 1886 | (bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *); |
252b5132 | 1887 | extern void _bfd_elf_swap_verneed_out |
c39a58e6 | 1888 | (bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *); |
252b5132 | 1889 | extern void _bfd_elf_swap_vernaux_in |
c39a58e6 | 1890 | (bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *); |
252b5132 | 1891 | extern void _bfd_elf_swap_vernaux_out |
c39a58e6 | 1892 | (bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *); |
252b5132 | 1893 | extern void _bfd_elf_swap_versym_in |
c39a58e6 | 1894 | (bfd *, const Elf_External_Versym *, Elf_Internal_Versym *); |
252b5132 | 1895 | extern void _bfd_elf_swap_versym_out |
c39a58e6 | 1896 | (bfd *, const Elf_Internal_Versym *, Elf_External_Versym *); |
252b5132 | 1897 | |
cb33740c | 1898 | extern unsigned int _bfd_elf_section_from_bfd_section |
c39a58e6 | 1899 | (bfd *, asection *); |
252b5132 | 1900 | extern char *bfd_elf_string_from_elf_section |
c39a58e6 | 1901 | (bfd *, unsigned, unsigned); |
6cdc0ccc | 1902 | extern Elf_Internal_Sym *bfd_elf_get_elf_syms |
c39a58e6 AM |
1903 | (bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *, |
1904 | Elf_External_Sym_Shndx *); | |
0e2cfdce | 1905 | extern const char *bfd_elf_sym_name |
26c61ae5 | 1906 | (bfd *, Elf_Internal_Shdr *, Elf_Internal_Sym *, asection *); |
252b5132 | 1907 | |
b34976b6 | 1908 | extern bfd_boolean _bfd_elf_copy_private_bfd_data |
c39a58e6 | 1909 | (bfd *, bfd *); |
b34976b6 | 1910 | extern bfd_boolean _bfd_elf_print_private_bfd_data |
c39a58e6 | 1911 | (bfd *, void *); |
60bb06bc | 1912 | const char * _bfd_elf_get_symbol_version_string |
bb4d2ac2 | 1913 | (bfd *, asymbol *, bfd_boolean *); |
dc810e39 | 1914 | extern void bfd_elf_print_symbol |
c39a58e6 | 1915 | (bfd *, void *, asymbol *, bfd_print_symbol_type); |
dc810e39 | 1916 | |
8c946ed5 RS |
1917 | extern unsigned int _bfd_elf_eh_frame_address_size |
1918 | (bfd *, asection *); | |
ec3391e7 AO |
1919 | extern bfd_byte _bfd_elf_encode_eh_address |
1920 | (bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset, | |
1921 | asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded); | |
1922 | extern bfd_boolean _bfd_elf_can_make_relative | |
1923 | (bfd *input_bfd, struct bfd_link_info *info, asection *eh_frame_section); | |
1924 | ||
dc810e39 | 1925 | extern enum elf_reloc_type_class _bfd_elf_reloc_type_class |
7e612e98 AM |
1926 | (const struct bfd_link_info *, const asection *, |
1927 | const Elf_Internal_Rela *); | |
f8df10f4 | 1928 | extern bfd_vma _bfd_elf_rela_local_sym |
8517fae7 | 1929 | (bfd *, Elf_Internal_Sym *, asection **, Elf_Internal_Rela *); |
c629eae0 | 1930 | extern bfd_vma _bfd_elf_rel_local_sym |
c39a58e6 | 1931 | (bfd *, Elf_Internal_Sym *, asection **, bfd_vma); |
c629eae0 | 1932 | extern bfd_vma _bfd_elf_section_offset |
c39a58e6 | 1933 | (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
db6751f2 | 1934 | |
dc810e39 | 1935 | extern unsigned long bfd_elf_hash |
c39a58e6 | 1936 | (const char *); |
fdc90cb4 JJ |
1937 | extern unsigned long bfd_elf_gnu_hash |
1938 | (const char *); | |
252b5132 | 1939 | |
dc810e39 | 1940 | extern bfd_reloc_status_type bfd_elf_generic_reloc |
c39a58e6 | 1941 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
0ffa91dd | 1942 | extern bfd_boolean bfd_elf_allocate_object |
4dfe6ac6 | 1943 | (bfd *, size_t, enum elf_target_id); |
ae95ffa6 | 1944 | extern bfd_boolean bfd_elf_make_object |
c39a58e6 | 1945 | (bfd *); |
b34976b6 | 1946 | extern bfd_boolean bfd_elf_mkcorefile |
c39a58e6 | 1947 | (bfd *); |
b34976b6 | 1948 | extern bfd_boolean _bfd_elf_make_section_from_shdr |
6dc132d9 | 1949 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
b34976b6 | 1950 | extern bfd_boolean _bfd_elf_make_section_from_phdr |
c39a58e6 | 1951 | (bfd *, Elf_Internal_Phdr *, int, const char *); |
252b5132 | 1952 | extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc |
c39a58e6 | 1953 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
252b5132 | 1954 | extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create |
c39a58e6 | 1955 | (bfd *); |
9f7c3e5e | 1956 | extern void _bfd_elf_link_hash_table_free |
d495ab0d | 1957 | (bfd *); |
c61b8717 | 1958 | extern void _bfd_elf_link_hash_copy_indirect |
fcfa13d2 | 1959 | (struct bfd_link_info *, struct elf_link_hash_entry *, |
c39a58e6 | 1960 | struct elf_link_hash_entry *); |
c61b8717 | 1961 | extern void _bfd_elf_link_hash_hide_symbol |
c39a58e6 | 1962 | (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean); |
508c3946 L |
1963 | extern bfd_boolean _bfd_elf_link_hash_fixup_symbol |
1964 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
b34976b6 | 1965 | extern bfd_boolean _bfd_elf_link_hash_table_init |
c39a58e6 AM |
1966 | (struct elf_link_hash_table *, bfd *, |
1967 | struct bfd_hash_entry *(*) | |
66eb6687 | 1968 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *), |
4dfe6ac6 | 1969 | unsigned int, enum elf_target_id); |
b34976b6 | 1970 | extern bfd_boolean _bfd_elf_slurp_version_tables |
fc0e6df6 | 1971 | (bfd *, bfd_boolean); |
b34976b6 | 1972 | extern bfd_boolean _bfd_elf_merge_sections |
c39a58e6 | 1973 | (bfd *, struct bfd_link_info *); |
ecca9871 L |
1974 | extern bfd_boolean _bfd_elf_match_sections_by_type |
1975 | (bfd *, const asection *, bfd *, const asection *); | |
72adc230 AM |
1976 | extern bfd_boolean bfd_elf_is_group_section |
1977 | (bfd *, const struct bfd_section *); | |
43e1669b | 1978 | extern bfd_boolean _bfd_elf_section_already_linked |
c77ec726 | 1979 | (bfd *, asection *, struct bfd_link_info *); |
1126897b | 1980 | extern void bfd_elf_set_group_contents |
c39a58e6 | 1981 | (bfd *, asection *, void *); |
76359541 TP |
1982 | extern unsigned int _bfd_elf_filter_global_symbols |
1983 | (bfd *, struct bfd_link_info *, asymbol **, long); | |
01b3c8ab | 1984 | extern asection *_bfd_elf_check_kept_section |
c0f00686 | 1985 | (asection *, struct bfd_link_info *); |
dbaa2011 | 1986 | #define _bfd_elf_link_just_syms _bfd_generic_link_just_syms |
1338dd10 PB |
1987 | extern void _bfd_elf_copy_link_hash_symbol_type |
1988 | (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *); | |
d0bf826b AM |
1989 | extern bfd_boolean _bfd_elf_size_group_sections |
1990 | (struct bfd_link_info *); | |
1991 | extern bfd_boolean _bfd_elf_fixup_group_sections | |
1992 | (bfd *, asection *); | |
80fccad2 BW |
1993 | extern bfd_boolean _bfd_elf_copy_private_header_data |
1994 | (bfd *, bfd *); | |
b34976b6 | 1995 | extern bfd_boolean _bfd_elf_copy_private_symbol_data |
c39a58e6 | 1996 | (bfd *, asymbol *, bfd *, asymbol *); |
ccd2ec6a L |
1997 | #define _bfd_generic_init_private_section_data \ |
1998 | _bfd_elf_init_private_section_data | |
1999 | extern bfd_boolean _bfd_elf_init_private_section_data | |
2000 | (bfd *, asection *, bfd *, asection *, struct bfd_link_info *); | |
b34976b6 | 2001 | extern bfd_boolean _bfd_elf_copy_private_section_data |
c39a58e6 | 2002 | (bfd *, asection *, bfd *, asection *); |
b34976b6 | 2003 | extern bfd_boolean _bfd_elf_write_object_contents |
c39a58e6 | 2004 | (bfd *); |
b34976b6 | 2005 | extern bfd_boolean _bfd_elf_write_corefile_contents |
c39a58e6 | 2006 | (bfd *); |
b34976b6 | 2007 | extern bfd_boolean _bfd_elf_set_section_contents |
0f867abe | 2008 | (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type); |
dc810e39 | 2009 | extern long _bfd_elf_get_symtab_upper_bound |
c39a58e6 | 2010 | (bfd *); |
6cee3f79 | 2011 | extern long _bfd_elf_canonicalize_symtab |
c39a58e6 | 2012 | (bfd *, asymbol **); |
dc810e39 | 2013 | extern long _bfd_elf_get_dynamic_symtab_upper_bound |
c39a58e6 | 2014 | (bfd *); |
dc810e39 | 2015 | extern long _bfd_elf_canonicalize_dynamic_symtab |
c39a58e6 | 2016 | (bfd *, asymbol **); |
4c45e5c9 | 2017 | extern long _bfd_elf_get_synthetic_symtab |
c9727e01 | 2018 | (bfd *, long, asymbol **, long, asymbol **, asymbol **); |
dc810e39 | 2019 | extern long _bfd_elf_get_reloc_upper_bound |
c39a58e6 | 2020 | (bfd *, sec_ptr); |
dc810e39 | 2021 | extern long _bfd_elf_canonicalize_reloc |
c39a58e6 | 2022 | (bfd *, sec_ptr, arelent **, asymbol **); |
83bac4b0 NC |
2023 | extern asection * _bfd_elf_get_dynamic_reloc_section |
2024 | (bfd *, asection *, bfd_boolean); | |
2025 | extern asection * _bfd_elf_make_dynamic_reloc_section | |
2026 | (asection *, bfd *, unsigned int, bfd *, bfd_boolean); | |
dc810e39 | 2027 | extern long _bfd_elf_get_dynamic_reloc_upper_bound |
c39a58e6 | 2028 | (bfd *); |
dc810e39 | 2029 | extern long _bfd_elf_canonicalize_dynamic_reloc |
c39a58e6 | 2030 | (bfd *, arelent **, asymbol **); |
dc810e39 | 2031 | extern asymbol *_bfd_elf_make_empty_symbol |
c39a58e6 | 2032 | (bfd *); |
dc810e39 | 2033 | extern void _bfd_elf_get_symbol_info |
c39a58e6 | 2034 | (bfd *, asymbol *, symbol_info *); |
b34976b6 | 2035 | extern bfd_boolean _bfd_elf_is_local_label_name |
c39a58e6 | 2036 | (bfd *, const char *); |
dc810e39 | 2037 | extern alent *_bfd_elf_get_lineno |
c39a58e6 | 2038 | (bfd *, asymbol *); |
b34976b6 | 2039 | extern bfd_boolean _bfd_elf_set_arch_mach |
c39a58e6 | 2040 | (bfd *, enum bfd_architecture, unsigned long); |
b34976b6 | 2041 | extern bfd_boolean _bfd_elf_find_nearest_line |
fb167eb2 AM |
2042 | (bfd *, asymbol **, asection *, bfd_vma, |
2043 | const char **, const char **, unsigned int *, unsigned int *); | |
5420f73d L |
2044 | extern bfd_boolean _bfd_elf_find_line |
2045 | (bfd *, asymbol **, asymbol *, const char **, unsigned int *); | |
4ab527b0 FF |
2046 | extern bfd_boolean _bfd_elf_find_inliner_info |
2047 | (bfd *, const char **, const char **, unsigned int *); | |
923b198a | 2048 | extern asymbol *_bfd_elf_find_function |
e00e8198 | 2049 | (bfd *, asymbol **, asection *, bfd_vma, const char **, const char **); |
252b5132 RH |
2050 | #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols |
2051 | #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol | |
dc810e39 | 2052 | extern int _bfd_elf_sizeof_headers |
a6b96beb | 2053 | (bfd *, struct bfd_link_info *); |
b34976b6 | 2054 | extern bfd_boolean _bfd_elf_new_section_hook |
c39a58e6 | 2055 | (bfd *, asection *); |
551b43fd AM |
2056 | extern const struct bfd_elf_special_section *_bfd_elf_get_special_section |
2057 | (const char *, const struct bfd_elf_special_section *, unsigned int); | |
7dcb9820 | 2058 | extern const struct bfd_elf_special_section *_bfd_elf_get_sec_type_attr |
551b43fd | 2059 | (bfd *, asection *); |
252b5132 RH |
2060 | |
2061 | /* If the target doesn't have reloc handling written yet: */ | |
dc810e39 | 2062 | extern void _bfd_elf_no_info_to_howto |
c39a58e6 | 2063 | (bfd *, arelent *, Elf_Internal_Rela *); |
dc810e39 | 2064 | |
b34976b6 | 2065 | extern bfd_boolean bfd_section_from_shdr |
c39a58e6 | 2066 | (bfd *, unsigned int shindex); |
b34976b6 | 2067 | extern bfd_boolean bfd_section_from_phdr |
c39a58e6 | 2068 | (bfd *, Elf_Internal_Phdr *, int); |
dc810e39 AM |
2069 | |
2070 | extern int _bfd_elf_symbol_from_bfd_symbol | |
c39a58e6 | 2071 | (bfd *, asymbol **); |
dc810e39 | 2072 | |
23209a78 | 2073 | extern Elf_Internal_Sym *bfd_sym_from_r_symndx |
87d72d41 | 2074 | (struct sym_cache *, bfd *, unsigned long); |
dc810e39 | 2075 | extern asection *bfd_section_from_elf_index |
c39a58e6 | 2076 | (bfd *, unsigned int); |
2b0f7ef9 JJ |
2077 | |
2078 | extern struct elf_strtab_hash * _bfd_elf_strtab_init | |
c39a58e6 | 2079 | (void); |
2b0f7ef9 | 2080 | extern void _bfd_elf_strtab_free |
c39a58e6 | 2081 | (struct elf_strtab_hash *); |
ef53be89 | 2082 | extern size_t _bfd_elf_strtab_add |
c39a58e6 | 2083 | (struct elf_strtab_hash *, const char *, bfd_boolean); |
2b0f7ef9 | 2084 | extern void _bfd_elf_strtab_addref |
ef53be89 | 2085 | (struct elf_strtab_hash *, size_t); |
2b0f7ef9 | 2086 | extern void _bfd_elf_strtab_delref |
ef53be89 | 2087 | (struct elf_strtab_hash *, size_t); |
02be4619 | 2088 | extern unsigned int _bfd_elf_strtab_refcount |
ef53be89 | 2089 | (struct elf_strtab_hash *, size_t); |
d45f8bda | 2090 | extern void _bfd_elf_strtab_clear_all_refs |
5b677558 AM |
2091 | (struct elf_strtab_hash *); |
2092 | extern void *_bfd_elf_strtab_save | |
2093 | (struct elf_strtab_hash *); | |
2094 | extern void _bfd_elf_strtab_restore | |
2095 | (struct elf_strtab_hash *, void *); | |
2b0f7ef9 | 2096 | extern bfd_size_type _bfd_elf_strtab_size |
c39a58e6 | 2097 | (struct elf_strtab_hash *); |
2b0f7ef9 | 2098 | extern bfd_size_type _bfd_elf_strtab_offset |
ef53be89 | 2099 | (struct elf_strtab_hash *, size_t); |
b34976b6 | 2100 | extern bfd_boolean _bfd_elf_strtab_emit |
c39a58e6 | 2101 | (bfd *, struct elf_strtab_hash *); |
2b0f7ef9 | 2102 | extern void _bfd_elf_strtab_finalize |
c39a58e6 | 2103 | (struct elf_strtab_hash *); |
2b0f7ef9 | 2104 | |
2f0c68f2 CM |
2105 | extern bfd_boolean bfd_elf_parse_eh_frame_entries |
2106 | (bfd *, struct bfd_link_info *); | |
2107 | extern bfd_boolean _bfd_elf_parse_eh_frame_entry | |
2108 | (struct bfd_link_info *, asection *, struct elf_reloc_cookie *); | |
ca92cecb RS |
2109 | extern void _bfd_elf_parse_eh_frame |
2110 | (bfd *, struct bfd_link_info *, asection *, struct elf_reloc_cookie *); | |
2f0c68f2 CM |
2111 | extern bfd_boolean _bfd_elf_end_eh_frame_parsing |
2112 | (struct bfd_link_info *info); | |
2113 | ||
b34976b6 | 2114 | extern bfd_boolean _bfd_elf_discard_section_eh_frame |
c39a58e6 AM |
2115 | (bfd *, struct bfd_link_info *, asection *, |
2116 | bfd_boolean (*) (bfd_vma, void *), struct elf_reloc_cookie *); | |
b34976b6 | 2117 | extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr |
c39a58e6 | 2118 | (bfd *, struct bfd_link_info *); |
65765700 | 2119 | extern bfd_vma _bfd_elf_eh_frame_section_offset |
92e4ec35 | 2120 | (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
b34976b6 | 2121 | extern bfd_boolean _bfd_elf_write_section_eh_frame |
c39a58e6 | 2122 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
2f0c68f2 CM |
2123 | bfd_boolean _bfd_elf_write_section_eh_frame_entry |
2124 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); | |
2125 | extern bfd_boolean _bfd_elf_fixup_eh_frame_hdr (struct bfd_link_info *); | |
b34976b6 | 2126 | extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr |
c39a58e6 | 2127 | (bfd *, struct bfd_link_info *); |
9a2a56cc AM |
2128 | extern bfd_boolean _bfd_elf_eh_frame_present |
2129 | (struct bfd_link_info *); | |
2f0c68f2 CM |
2130 | extern bfd_boolean _bfd_elf_eh_frame_entry_present |
2131 | (struct bfd_link_info *); | |
b34976b6 | 2132 | extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr |
c39a58e6 | 2133 | (struct bfd_link_info *); |
65765700 | 2134 | |
fdc90cb4 JJ |
2135 | extern bfd_boolean _bfd_elf_hash_symbol (struct elf_link_hash_entry *); |
2136 | ||
dc810e39 | 2137 | extern long _bfd_elf_link_lookup_local_dynindx |
c39a58e6 | 2138 | (struct bfd_link_info *, bfd *, long); |
b34976b6 | 2139 | extern bfd_boolean _bfd_elf_compute_section_file_positions |
c39a58e6 | 2140 | (bfd *, struct bfd_link_info *); |
dc810e39 | 2141 | extern file_ptr _bfd_elf_assign_file_position_for_section |
c39a58e6 | 2142 | (Elf_Internal_Shdr *, file_ptr, bfd_boolean); |
dc810e39 | 2143 | |
b34976b6 | 2144 | extern bfd_boolean _bfd_elf_validate_reloc |
c39a58e6 | 2145 | (bfd *, arelent *); |
dc810e39 | 2146 | |
45d6a902 | 2147 | extern bfd_boolean _bfd_elf_link_create_dynamic_sections |
c39a58e6 | 2148 | (bfd *, struct bfd_link_info *); |
aee6f5b4 AO |
2149 | extern bfd_boolean _bfd_elf_link_omit_section_dynsym |
2150 | (bfd *, struct bfd_link_info *, asection *); | |
b34976b6 | 2151 | extern bfd_boolean _bfd_elf_create_dynamic_sections |
c39a58e6 | 2152 | (bfd *, struct bfd_link_info *); |
b34976b6 | 2153 | extern bfd_boolean _bfd_elf_create_got_section |
c39a58e6 | 2154 | (bfd *, struct bfd_link_info *); |
2f0c68f2 CM |
2155 | extern asection *_bfd_elf_section_for_symbol |
2156 | (struct elf_reloc_cookie *, unsigned long, bfd_boolean); | |
d98685ac AM |
2157 | extern struct elf_link_hash_entry *_bfd_elf_define_linkage_sym |
2158 | (bfd *, struct bfd_link_info *, asection *, const char *); | |
74541ad4 AM |
2159 | extern void _bfd_elf_init_1_index_section |
2160 | (bfd *, struct bfd_link_info *); | |
2161 | extern void _bfd_elf_init_2_index_sections | |
2162 | (bfd *, struct bfd_link_info *); | |
dc810e39 | 2163 | |
b34976b6 | 2164 | extern bfd_boolean _bfd_elfcore_make_pseudosection |
c39a58e6 | 2165 | (bfd *, char *, size_t, ufile_ptr); |
dc810e39 | 2166 | extern char *_bfd_elfcore_strndup |
c39a58e6 | 2167 | (bfd *, char *, size_t); |
dc810e39 | 2168 | |
45d6a902 | 2169 | extern Elf_Internal_Rela *_bfd_elf_link_read_relocs |
c39a58e6 | 2170 | (bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean); |
45d6a902 | 2171 | |
45d6a902 | 2172 | extern bfd_boolean _bfd_elf_link_output_relocs |
eac338cf PB |
2173 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *, |
2174 | struct elf_link_hash_entry **); | |
45d6a902 | 2175 | |
027297b7 | 2176 | extern bfd_boolean _bfd_elf_adjust_dynamic_copy |
6cabe1ea | 2177 | (struct bfd_link_info *, struct elf_link_hash_entry *, asection *); |
027297b7 | 2178 | |
986a241f | 2179 | extern bfd_boolean _bfd_elf_dynamic_symbol_p |
c39a58e6 | 2180 | (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean); |
f6c52c13 AM |
2181 | |
2182 | extern bfd_boolean _bfd_elf_symbol_refs_local_p | |
c39a58e6 | 2183 | (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean); |
986a241f | 2184 | |
cdfeee4f | 2185 | extern bfd_reloc_status_type bfd_elf_perform_complex_relocation |
0f02bbd9 | 2186 | (bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma); |
d9352518 | 2187 | |
dd863624 | 2188 | extern bfd_boolean _bfd_elf_setup_sections |
3d7f7666 L |
2189 | (bfd *); |
2190 | ||
78245035 | 2191 | extern void _bfd_elf_post_process_headers (bfd * , struct bfd_link_info *); |
d1036acb | 2192 | |
dc810e39 | 2193 | extern const bfd_target *bfd_elf32_object_p |
c39a58e6 | 2194 | (bfd *); |
dc810e39 | 2195 | extern const bfd_target *bfd_elf32_core_file_p |
c39a58e6 | 2196 | (bfd *); |
dc810e39 | 2197 | extern char *bfd_elf32_core_file_failing_command |
c39a58e6 | 2198 | (bfd *); |
dc810e39 | 2199 | extern int bfd_elf32_core_file_failing_signal |
c39a58e6 | 2200 | (bfd *); |
b34976b6 | 2201 | extern bfd_boolean bfd_elf32_core_file_matches_executable_p |
c39a58e6 | 2202 | (bfd *, bfd *); |
261b8d08 PA |
2203 | extern int bfd_elf32_core_file_pid |
2204 | (bfd *); | |
252b5132 | 2205 | |
8384fb8f | 2206 | extern bfd_boolean bfd_elf32_swap_symbol_in |
c39a58e6 | 2207 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
252b5132 | 2208 | extern void bfd_elf32_swap_symbol_out |
c39a58e6 | 2209 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
252b5132 | 2210 | extern void bfd_elf32_swap_reloc_in |
c39a58e6 | 2211 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2212 | extern void bfd_elf32_swap_reloc_out |
c39a58e6 | 2213 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2214 | extern void bfd_elf32_swap_reloca_in |
c39a58e6 | 2215 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2216 | extern void bfd_elf32_swap_reloca_out |
c39a58e6 | 2217 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2218 | extern void bfd_elf32_swap_phdr_in |
c39a58e6 | 2219 | (bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *); |
252b5132 | 2220 | extern void bfd_elf32_swap_phdr_out |
c39a58e6 | 2221 | (bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *); |
252b5132 | 2222 | extern void bfd_elf32_swap_dyn_in |
c39a58e6 | 2223 | (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 | 2224 | extern void bfd_elf32_swap_dyn_out |
c39a58e6 | 2225 | (bfd *, const Elf_Internal_Dyn *, void *); |
252b5132 | 2226 | extern long bfd_elf32_slurp_symbol_table |
c39a58e6 | 2227 | (bfd *, asymbol **, bfd_boolean); |
b34976b6 | 2228 | extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr |
c39a58e6 | 2229 | (bfd *); |
252b5132 | 2230 | extern int bfd_elf32_write_out_phdrs |
c39a58e6 | 2231 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
20a761b5 RM |
2232 | extern bfd_boolean bfd_elf32_checksum_contents |
2233 | (bfd * , void (*) (const void *, size_t, void *), void *); | |
b9f66672 | 2234 | extern void bfd_elf32_write_relocs |
c39a58e6 | 2235 | (bfd *, asection *, void *); |
b34976b6 | 2236 | extern bfd_boolean bfd_elf32_slurp_reloc_table |
c39a58e6 | 2237 | (bfd *, asection *, asymbol **, bfd_boolean); |
252b5132 | 2238 | |
dc810e39 | 2239 | extern const bfd_target *bfd_elf64_object_p |
c39a58e6 | 2240 | (bfd *); |
dc810e39 | 2241 | extern const bfd_target *bfd_elf64_core_file_p |
c39a58e6 | 2242 | (bfd *); |
dc810e39 | 2243 | extern char *bfd_elf64_core_file_failing_command |
c39a58e6 | 2244 | (bfd *); |
dc810e39 | 2245 | extern int bfd_elf64_core_file_failing_signal |
c39a58e6 | 2246 | (bfd *); |
b34976b6 | 2247 | extern bfd_boolean bfd_elf64_core_file_matches_executable_p |
c39a58e6 | 2248 | (bfd *, bfd *); |
261b8d08 PA |
2249 | extern int bfd_elf64_core_file_pid |
2250 | (bfd *); | |
252b5132 | 2251 | |
8384fb8f | 2252 | extern bfd_boolean bfd_elf64_swap_symbol_in |
c39a58e6 | 2253 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
252b5132 | 2254 | extern void bfd_elf64_swap_symbol_out |
c39a58e6 | 2255 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
252b5132 | 2256 | extern void bfd_elf64_swap_reloc_in |
c39a58e6 | 2257 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2258 | extern void bfd_elf64_swap_reloc_out |
c39a58e6 | 2259 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2260 | extern void bfd_elf64_swap_reloca_in |
c39a58e6 | 2261 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
252b5132 | 2262 | extern void bfd_elf64_swap_reloca_out |
c39a58e6 | 2263 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
252b5132 | 2264 | extern void bfd_elf64_swap_phdr_in |
c39a58e6 | 2265 | (bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *); |
252b5132 | 2266 | extern void bfd_elf64_swap_phdr_out |
c39a58e6 | 2267 | (bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *); |
252b5132 | 2268 | extern void bfd_elf64_swap_dyn_in |
c39a58e6 | 2269 | (bfd *, const void *, Elf_Internal_Dyn *); |
252b5132 | 2270 | extern void bfd_elf64_swap_dyn_out |
c39a58e6 | 2271 | (bfd *, const Elf_Internal_Dyn *, void *); |
252b5132 | 2272 | extern long bfd_elf64_slurp_symbol_table |
c39a58e6 | 2273 | (bfd *, asymbol **, bfd_boolean); |
b34976b6 | 2274 | extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr |
c39a58e6 | 2275 | (bfd *); |
252b5132 | 2276 | extern int bfd_elf64_write_out_phdrs |
c39a58e6 | 2277 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
20a761b5 RM |
2278 | extern bfd_boolean bfd_elf64_checksum_contents |
2279 | (bfd * , void (*) (const void *, size_t, void *), void *); | |
b9f66672 | 2280 | extern void bfd_elf64_write_relocs |
c39a58e6 | 2281 | (bfd *, asection *, void *); |
b34976b6 | 2282 | extern bfd_boolean bfd_elf64_slurp_reloc_table |
c39a58e6 | 2283 | (bfd *, asection *, asymbol **, bfd_boolean); |
5a580b3a | 2284 | |
13285a1b AM |
2285 | extern bfd_boolean _bfd_elf_default_relocs_compatible |
2286 | (const bfd_target *, const bfd_target *); | |
2287 | ||
2288 | extern bfd_boolean _bfd_elf_relocs_compatible | |
2289 | (const bfd_target *, const bfd_target *); | |
e5034e59 AM |
2290 | extern bfd_boolean _bfd_elf_notice_as_needed |
2291 | (bfd *, struct bfd_link_info *, enum notice_asneeded_action); | |
13285a1b | 2292 | |
8387904d AM |
2293 | extern struct elf_link_hash_entry *_bfd_elf_archive_symbol_lookup |
2294 | (bfd *, struct bfd_link_info *, const char *); | |
4ad4eba5 AM |
2295 | extern bfd_boolean bfd_elf_link_add_symbols |
2296 | (bfd *, struct bfd_link_info *); | |
5a580b3a | 2297 | extern bfd_boolean _bfd_elf_add_dynamic_entry |
c39a58e6 | 2298 | (struct bfd_link_info *, bfd_vma, bfd_vma); |
d9689752 L |
2299 | extern bfd_boolean _bfd_elf_link_check_relocs |
2300 | (bfd *, struct bfd_link_info *); | |
252b5132 | 2301 | |
c152c796 AM |
2302 | extern bfd_boolean bfd_elf_link_record_dynamic_symbol |
2303 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
30b30c21 | 2304 | |
c152c796 | 2305 | extern int bfd_elf_link_record_local_dynamic_symbol |
c39a58e6 | 2306 | (struct bfd_link_info *, bfd *, long); |
252b5132 | 2307 | |
b34976b6 | 2308 | extern bfd_boolean _bfd_elf_close_and_cleanup |
c39a58e6 | 2309 | (bfd *); |
35330cce | 2310 | |
a4d8e49b L |
2311 | extern bfd_boolean _bfd_elf_common_definition |
2312 | (Elf_Internal_Sym *); | |
2313 | ||
2314 | extern unsigned int _bfd_elf_common_section_index | |
2315 | (asection *); | |
2316 | ||
2317 | extern asection *_bfd_elf_common_section | |
2318 | (asection *); | |
2319 | ||
10455f89 HPN |
2320 | extern bfd_vma _bfd_elf_default_got_elt_size |
2321 | (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, bfd *, | |
2322 | unsigned long); | |
2323 | ||
252b5132 | 2324 | extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn |
fc0a2244 | 2325 | (bfd *, arelent *, struct bfd_symbol *, void *, |
c39a58e6 | 2326 | asection *, bfd *, char **); |
252b5132 | 2327 | |
c152c796 | 2328 | extern bfd_boolean bfd_elf_final_link |
c39a58e6 | 2329 | (bfd *, struct bfd_link_info *); |
c152c796 | 2330 | |
74f0fb50 AM |
2331 | extern void _bfd_elf_gc_keep |
2332 | (struct bfd_link_info *info); | |
2333 | ||
64d03ab5 AM |
2334 | extern bfd_boolean bfd_elf_gc_mark_dynamic_ref_symbol |
2335 | (struct elf_link_hash_entry *h, void *inf); | |
2336 | ||
c152c796 | 2337 | extern bfd_boolean bfd_elf_gc_sections |
c39a58e6 | 2338 | (bfd *, struct bfd_link_info *); |
c152c796 AM |
2339 | |
2340 | extern bfd_boolean bfd_elf_gc_record_vtinherit | |
c39a58e6 | 2341 | (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
c152c796 AM |
2342 | |
2343 | extern bfd_boolean bfd_elf_gc_record_vtentry | |
c39a58e6 | 2344 | (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
252b5132 | 2345 | |
07adf181 AM |
2346 | extern asection *_bfd_elf_gc_mark_hook |
2347 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | |
2348 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
2349 | ||
5241d853 RS |
2350 | extern asection *_bfd_elf_gc_mark_rsec |
2351 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn, | |
1cce69b9 | 2352 | struct elf_reloc_cookie *, bfd_boolean *); |
5241d853 RS |
2353 | |
2354 | extern bfd_boolean _bfd_elf_gc_mark_reloc | |
2355 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn, | |
9d0a14d3 RS |
2356 | struct elf_reloc_cookie *); |
2357 | ||
2358 | extern bfd_boolean _bfd_elf_gc_mark_fdes | |
2359 | (struct bfd_link_info *, asection *, asection *, elf_gc_mark_hook_fn, | |
2360 | struct elf_reloc_cookie *); | |
5241d853 | 2361 | |
ccfa59ea | 2362 | extern bfd_boolean _bfd_elf_gc_mark |
5241d853 | 2363 | (struct bfd_link_info *, asection *, elf_gc_mark_hook_fn); |
ccfa59ea | 2364 | |
7f6ab9f8 AM |
2365 | extern bfd_boolean _bfd_elf_gc_mark_extra_sections |
2366 | (struct bfd_link_info *, elf_gc_mark_hook_fn); | |
2367 | ||
c152c796 | 2368 | extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets |
c39a58e6 | 2369 | (bfd *, struct bfd_link_info *); |
c152c796 AM |
2370 | |
2371 | extern bfd_boolean bfd_elf_gc_common_final_link | |
c39a58e6 | 2372 | (bfd *, struct bfd_link_info *); |
252b5132 | 2373 | |
a6a4679f AM |
2374 | extern asection *_bfd_elf_is_start_stop |
2375 | (const struct bfd_link_info *, struct elf_link_hash_entry *); | |
2376 | ||
c152c796 | 2377 | extern bfd_boolean bfd_elf_reloc_symbol_deleted_p |
c39a58e6 | 2378 | (bfd_vma, void *); |
73d074b4 | 2379 | |
8ded5a0f | 2380 | extern struct elf_segment_map * _bfd_elf_make_dynamic_segment |
229fcec5 MM |
2381 | (bfd *, asection *); |
2382 | ||
8ded5a0f AM |
2383 | extern bfd_boolean _bfd_elf_map_sections_to_segments |
2384 | (bfd *, struct bfd_link_info *); | |
2385 | ||
fcb93ecf PB |
2386 | extern bfd_boolean _bfd_elf_is_function_type (unsigned int); |
2387 | ||
aef36ac1 AM |
2388 | extern bfd_size_type _bfd_elf_maybe_function_sym (const asymbol *, asection *, |
2389 | bfd_vma *); | |
9f296da3 | 2390 | |
bd53a53a L |
2391 | extern asection *_bfd_elf_get_reloc_section (asection *); |
2392 | ||
94be91de JB |
2393 | extern int bfd_elf_get_default_section_type (flagword); |
2394 | ||
b9c361e0 JL |
2395 | extern bfd_boolean bfd_elf_lookup_section_flags |
2396 | (struct bfd_link_info *, struct flag_info *, asection *); | |
ae17ab41 | 2397 | |
2ea37f1c NC |
2398 | extern Elf_Internal_Phdr * _bfd_elf_find_segment_containing_section |
2399 | (bfd * abfd, asection * section); | |
2400 | ||
14b57c7c AM |
2401 | /* PowerPC @tls opcode transform/validate. */ |
2402 | extern unsigned int _bfd_elf_ppc_at_tls_transform | |
2403 | (unsigned int, unsigned int); | |
2404 | /* PowerPC @tprel opcode transform/validate. */ | |
2405 | extern unsigned int _bfd_elf_ppc_at_tprel_transform | |
2406 | (unsigned int, unsigned int); | |
2407 | /* PowerPC elf_object_p tweak. */ | |
2408 | extern bfd_boolean _bfd_elf_ppc_set_arch (bfd *); | |
005d79fd | 2409 | /* PowerPC .gnu.attributes handling common to both 32-bit and 64-bit. */ |
50e03d47 | 2410 | extern void _bfd_elf_ppc_merge_fp_attributes (bfd *, struct bfd_link_info *); |
14b57c7c | 2411 | |
9eaff861 | 2412 | /* Exported interface for writing elf corefile notes. */ |
d4c88bbb | 2413 | extern char *elfcore_write_note |
c39a58e6 | 2414 | (bfd *, char *, int *, const char *, int, const void *, int); |
d4c88bbb | 2415 | extern char *elfcore_write_prpsinfo |
c39a58e6 | 2416 | (bfd *, char *, int *, const char *, const char *); |
d4c88bbb | 2417 | extern char *elfcore_write_prstatus |
c39a58e6 | 2418 | (bfd *, char *, int *, long, int, const void *); |
d4c88bbb | 2419 | extern char * elfcore_write_pstatus |
c39a58e6 | 2420 | (bfd *, char *, int *, long, int, const void *); |
d4c88bbb | 2421 | extern char *elfcore_write_prfpreg |
c39a58e6 | 2422 | (bfd *, char *, int *, const void *, int); |
d4c88bbb | 2423 | extern char *elfcore_write_prxfpreg |
c39a58e6 | 2424 | (bfd *, char *, int *, const void *, int); |
4339cae0 L |
2425 | extern char *elfcore_write_xstatereg |
2426 | (bfd *, char *, int *, const void *, int); | |
97753bd5 AM |
2427 | extern char *elfcore_write_ppc_vmx |
2428 | (bfd *, char *, int *, const void *, int); | |
89eeb0bc LM |
2429 | extern char *elfcore_write_ppc_vsx |
2430 | (bfd *, char *, int *, const void *, int); | |
d7eeb400 MS |
2431 | extern char *elfcore_write_s390_timer |
2432 | (bfd *, char *, int *, const void *, int); | |
2433 | extern char *elfcore_write_s390_todcmp | |
2434 | (bfd *, char *, int *, const void *, int); | |
2435 | extern char *elfcore_write_s390_todpreg | |
2436 | (bfd *, char *, int *, const void *, int); | |
2437 | extern char *elfcore_write_s390_ctrs | |
2438 | (bfd *, char *, int *, const void *, int); | |
2439 | extern char *elfcore_write_s390_prefix | |
2440 | (bfd *, char *, int *, const void *, int); | |
355b81d9 UW |
2441 | extern char *elfcore_write_s390_last_break |
2442 | (bfd *, char *, int *, const void *, int); | |
2443 | extern char *elfcore_write_s390_system_call | |
2444 | (bfd *, char *, int *, const void *, int); | |
abb3f6cc NC |
2445 | extern char *elfcore_write_s390_tdb |
2446 | (bfd *, char *, int *, const void *, int); | |
4ef9f41a AA |
2447 | extern char *elfcore_write_s390_vxrs_low |
2448 | (bfd *, char *, int *, const void *, int); | |
2449 | extern char *elfcore_write_s390_vxrs_high | |
2450 | (bfd *, char *, int *, const void *, int); | |
faa9a424 UW |
2451 | extern char *elfcore_write_arm_vfp |
2452 | (bfd *, char *, int *, const void *, int); | |
652451f8 YZ |
2453 | extern char *elfcore_write_aarch_tls |
2454 | (bfd *, char *, int *, const void *, int); | |
2455 | extern char *elfcore_write_aarch_hw_break | |
2456 | (bfd *, char *, int *, const void *, int); | |
2457 | extern char *elfcore_write_aarch_hw_watch | |
2458 | (bfd *, char *, int *, const void *, int); | |
d4c88bbb | 2459 | extern char *elfcore_write_lwpstatus |
c39a58e6 | 2460 | (bfd *, char *, int *, long, int, const void *); |
bb864ac1 CES |
2461 | extern char *elfcore_write_register_note |
2462 | (bfd *, char *, int *, const char *, const void *, int); | |
7c76fa91 | 2463 | |
70a38d42 SDJ |
2464 | /* Internal structure which holds information to be included in the |
2465 | PRPSINFO section of Linux core files. | |
2466 | ||
2467 | This is an "internal" structure in the sense that it should be used | |
2468 | to pass information to BFD (via the `elfcore_write_linux_prpsinfo' | |
2469 | function), so things like endianess shouldn't be an issue. This | |
2470 | structure will eventually be converted in one of the | |
2471 | `elf_external_linux_*' structures and written out to an output bfd | |
2472 | by one of the functions declared below. */ | |
2473 | ||
2474 | struct elf_internal_linux_prpsinfo | |
2475 | { | |
2476 | char pr_state; /* Numeric process state. */ | |
2477 | char pr_sname; /* Char for pr_state. */ | |
2478 | char pr_zomb; /* Zombie. */ | |
2479 | char pr_nice; /* Nice val. */ | |
2480 | unsigned long pr_flag; /* Flags. */ | |
2481 | unsigned int pr_uid; | |
2482 | unsigned int pr_gid; | |
2483 | int pr_pid, pr_ppid, pr_pgrp, pr_sid; | |
2484 | char pr_fname[16 + 1]; /* Filename of executable. */ | |
2485 | char pr_psargs[80 + 1]; /* Initial part of arg list. */ | |
2486 | }; | |
2487 | ||
2488 | /* Linux/most 32-bit archs. */ | |
2489 | extern char *elfcore_write_linux_prpsinfo32 | |
2490 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); | |
2491 | ||
2492 | /* Linux/most 64-bit archs. */ | |
2493 | extern char *elfcore_write_linux_prpsinfo64 | |
2494 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); | |
2495 | ||
2496 | /* Linux/PPC32 uses different layout compared to most archs. */ | |
2497 | extern char *elfcore_write_ppc_linux_prpsinfo32 | |
2498 | (bfd *, char *, int *, const struct elf_internal_linux_prpsinfo *); | |
2499 | ||
8d6337fe | 2500 | extern bfd *_bfd_elf32_bfd_from_remote_memory |
f0a5d95a | 2501 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
fe78531d | 2502 | int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)); |
8d6337fe | 2503 | extern bfd *_bfd_elf64_bfd_from_remote_memory |
f0a5d95a | 2504 | (bfd *templ, bfd_vma ehdr_vma, bfd_size_type size, bfd_vma *loadbasep, |
fe78531d | 2505 | int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)); |
8d6337fe | 2506 | |
104d59d1 JM |
2507 | extern bfd_vma bfd_elf_obj_attr_size (bfd *); |
2508 | extern void bfd_elf_set_obj_attr_contents (bfd *, bfd_byte *, bfd_vma); | |
5ee4a1ca NC |
2509 | extern int bfd_elf_get_obj_attr_int (bfd *, int, unsigned int); |
2510 | extern void bfd_elf_add_obj_attr_int (bfd *, int, unsigned int, unsigned int); | |
104d59d1 JM |
2511 | #define bfd_elf_add_proc_attr_int(BFD, TAG, VALUE) \ |
2512 | bfd_elf_add_obj_attr_int ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE)) | |
5ee4a1ca | 2513 | extern void bfd_elf_add_obj_attr_string (bfd *, int, unsigned int, const char *); |
104d59d1 JM |
2514 | #define bfd_elf_add_proc_attr_string(BFD, TAG, VALUE) \ |
2515 | bfd_elf_add_obj_attr_string ((BFD), OBJ_ATTR_PROC, (TAG), (VALUE)) | |
5ee4a1ca NC |
2516 | extern void bfd_elf_add_obj_attr_int_string (bfd *, int, unsigned int, |
2517 | unsigned int, const char *); | |
7b86a9fa AS |
2518 | #define bfd_elf_add_proc_attr_int_string(BFD, TAG, INTVAL, STRVAL) \ |
2519 | bfd_elf_add_obj_attr_int_string ((BFD), OBJ_ATTR_PROC, (TAG), \ | |
2520 | (INTVAL), (STRVAL)) | |
104d59d1 JM |
2521 | |
2522 | extern char *_bfd_elf_attr_strdup (bfd *, const char *); | |
2523 | extern void _bfd_elf_copy_obj_attributes (bfd *, bfd *); | |
5ee4a1ca | 2524 | extern int _bfd_elf_obj_attrs_arg_type (bfd *, int, unsigned int); |
104d59d1 | 2525 | extern void _bfd_elf_parse_attributes (bfd *, Elf_Internal_Shdr *); |
50e03d47 AM |
2526 | extern bfd_boolean _bfd_elf_merge_object_attributes |
2527 | (bfd *, struct bfd_link_info *); | |
e8b36cd1 JM |
2528 | extern bfd_boolean _bfd_elf_merge_unknown_attribute_low (bfd *, bfd *, int); |
2529 | extern bfd_boolean _bfd_elf_merge_unknown_attribute_list (bfd *, bfd *); | |
d4730f92 | 2530 | extern Elf_Internal_Shdr *_bfd_elf_single_rel_hdr (asection *sec); |
104d59d1 | 2531 | |
6061a67d | 2532 | /* The linker may need to keep track of the number of relocs that it |
e03a8ed8 L |
2533 | decides to copy as dynamic relocs in check_relocs for each symbol. |
2534 | This is so that it can later discard them if they are found to be | |
2535 | unnecessary. We can store the information in a field extending the | |
2536 | regular ELF linker hash table. */ | |
2537 | ||
2538 | struct elf_dyn_relocs | |
2539 | { | |
2540 | struct elf_dyn_relocs *next; | |
2541 | ||
2542 | /* The input section of the reloc. */ | |
2543 | asection *sec; | |
2544 | ||
2545 | /* Total number of relocs copied for the input section. */ | |
2546 | bfd_size_type count; | |
2547 | ||
2548 | /* Number of pc-relative relocs copied for the input section. */ | |
2549 | bfd_size_type pc_count; | |
2550 | }; | |
2551 | ||
2a81c24a | 2552 | extern bfd_boolean _bfd_elf_create_ifunc_sections |
3aa14d16 | 2553 | (bfd *, struct bfd_link_info *); |
e03a8ed8 L |
2554 | extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs |
2555 | (struct bfd_link_info *, struct elf_link_hash_entry *, | |
2df3368d | 2556 | struct elf_dyn_relocs **, bfd_boolean *, unsigned int, |
233cc9c1 | 2557 | unsigned int, unsigned int, bfd_boolean); |
3972882e L |
2558 | extern long _bfd_elf_ifunc_get_synthetic_symtab |
2559 | (bfd *, long, asymbol **, long, asymbol **, asymbol **, asection *, | |
2560 | bfd_vma *(*) (bfd *, asymbol **, asection *, asection *)); | |
d8045f23 | 2561 | |
351f65ca L |
2562 | extern void elf_append_rela (bfd *, asection *, Elf_Internal_Rela *); |
2563 | extern void elf_append_rel (bfd *, asection *, Elf_Internal_Rela *); | |
2564 | ||
2565 | extern bfd_vma elf64_r_info (bfd_vma, bfd_vma); | |
2566 | extern bfd_vma elf64_r_sym (bfd_vma); | |
2567 | extern bfd_vma elf32_r_info (bfd_vma, bfd_vma); | |
2568 | extern bfd_vma elf32_r_sym (bfd_vma); | |
2569 | ||
3b22753a L |
2570 | /* Large common section. */ |
2571 | extern asection _bfd_elf_large_com_section; | |
2572 | ||
d2149d72 L |
2573 | /* Hash for local symbol with the first section id, ID, in the input |
2574 | file and the local symbol index, SYM. */ | |
2575 | #define ELF_LOCAL_SYMBOL_HASH(ID, SYM) \ | |
2576 | (((((ID) & 0xff) << 24) | (((ID) & 0xff00) << 8)) \ | |
2577 | ^ (SYM) ^ ((ID) >> 16)) | |
2578 | ||
c152c796 AM |
2579 | /* This is the condition under which finish_dynamic_symbol will be called. |
2580 | If our finish_dynamic_symbol isn't called, we'll need to do something | |
2581 | about initializing any .plt and .got entries in relocate_section. */ | |
2582 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ | |
2583 | ((DYN) \ | |
f5385ebf AM |
2584 | && ((SHARED) || !(H)->forced_local) \ |
2585 | && ((H)->dynindx != -1 || (H)->forced_local)) | |
c152c796 | 2586 | |
560e09e9 NC |
2587 | /* This macro is to avoid lots of duplicated code in the body |
2588 | of xxx_relocate_section() in the various elfxx-xxxx.c files. */ | |
b2a8e766 AM |
2589 | #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \ |
2590 | r_symndx, symtab_hdr, sym_hashes, \ | |
2591 | h, sec, relocation, \ | |
62d887d4 | 2592 | unresolved_reloc, warned, ignored) \ |
b2a8e766 AM |
2593 | do \ |
2594 | { \ | |
2595 | /* It seems this can happen with erroneous or unsupported \ | |
2596 | input (mixing a.out and elf in an archive, for example.) */ \ | |
2597 | if (sym_hashes == NULL) \ | |
2598 | return FALSE; \ | |
2599 | \ | |
2600 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \ | |
2601 | \ | |
8a5da09b AM |
2602 | if (info->wrap_hash != NULL \ |
2603 | && (input_section->flags & SEC_DEBUGGING) != 0) \ | |
2604 | h = ((struct elf_link_hash_entry *) \ | |
2605 | unwrap_hash_lookup (info, input_bfd, &h->root)); \ | |
2606 | \ | |
b2a8e766 AM |
2607 | while (h->root.type == bfd_link_hash_indirect \ |
2608 | || h->root.type == bfd_link_hash_warning) \ | |
2609 | h = (struct elf_link_hash_entry *) h->root.u.i.link; \ | |
2610 | \ | |
2611 | warned = FALSE; \ | |
62d887d4 | 2612 | ignored = FALSE; \ |
b2a8e766 AM |
2613 | unresolved_reloc = FALSE; \ |
2614 | relocation = 0; \ | |
2615 | if (h->root.type == bfd_link_hash_defined \ | |
2616 | || h->root.type == bfd_link_hash_defweak) \ | |
2617 | { \ | |
2618 | sec = h->root.u.def.section; \ | |
2619 | if (sec == NULL \ | |
2620 | || sec->output_section == NULL) \ | |
2621 | /* Set a flag that will be cleared later if we find a \ | |
2622 | relocation value for this symbol. output_section \ | |
2623 | is typically NULL for symbols satisfied by a shared \ | |
2624 | library. */ \ | |
2625 | unresolved_reloc = TRUE; \ | |
2626 | else \ | |
2627 | relocation = (h->root.u.def.value \ | |
2628 | + sec->output_section->vma \ | |
2629 | + sec->output_offset); \ | |
2630 | } \ | |
2631 | else if (h->root.type == bfd_link_hash_undefweak) \ | |
2632 | ; \ | |
2633 | else if (info->unresolved_syms_in_objects == RM_IGNORE \ | |
2634 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \ | |
62d887d4 | 2635 | ignored = TRUE; \ |
0e1862bb | 2636 | else if (!bfd_link_relocatable (info)) \ |
b2a8e766 | 2637 | { \ |
5a580b3a AM |
2638 | bfd_boolean err; \ |
2639 | err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR \ | |
2640 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT); \ | |
1a72702b AM |
2641 | (*info->callbacks->undefined_symbol) (info, \ |
2642 | h->root.root.string, \ | |
2643 | input_bfd, \ | |
2644 | input_section, \ | |
2645 | rel->r_offset, err); \ | |
b2a8e766 AM |
2646 | warned = TRUE; \ |
2647 | } \ | |
c7e2358a AM |
2648 | (void) unresolved_reloc; \ |
2649 | (void) warned; \ | |
62d887d4 | 2650 | (void) ignored; \ |
b2a8e766 | 2651 | } \ |
560e09e9 NC |
2652 | while (0) |
2653 | ||
0672748a L |
2654 | /* This macro is to avoid lots of duplicated code in the body of the |
2655 | loop over relocations in xxx_relocate_section() in the various | |
2656 | elfxx-xxxx.c files. | |
23209a78 | 2657 | |
0672748a L |
2658 | Handle relocations against symbols from removed linkonce sections, |
2659 | or sections discarded by a linker script. When doing a relocatable | |
2660 | link, we remove such relocations. Otherwise, we just want the | |
2661 | section contents zeroed and avoid any special processing. */ | |
2662 | #define RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \ | |
545fd46b MR |
2663 | rel, count, relend, \ |
2664 | howto, index, contents) \ | |
0672748a | 2665 | { \ |
a134cc9b | 2666 | int i_; \ |
e4067dbb | 2667 | _bfd_clear_contents (howto, input_bfd, input_section, \ |
545fd46b | 2668 | contents + rel[index].r_offset); \ |
e4067dbb | 2669 | \ |
0e1862bb | 2670 | if (bfd_link_relocatable (info) \ |
0672748a L |
2671 | && (input_section->flags & SEC_DEBUGGING)) \ |
2672 | { \ | |
2673 | /* Only remove relocations in debug sections since other \ | |
2674 | sections may require relocations. */ \ | |
2675 | Elf_Internal_Shdr *rel_hdr; \ | |
2676 | \ | |
d4730f92 | 2677 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \ |
0672748a L |
2678 | \ |
2679 | /* Avoid empty output section. */ \ | |
86f7d49b | 2680 | if (rel_hdr->sh_size > rel_hdr->sh_entsize) \ |
0672748a | 2681 | { \ |
86f7d49b | 2682 | rel_hdr->sh_size -= rel_hdr->sh_entsize; \ |
d4730f92 | 2683 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); \ |
86f7d49b | 2684 | rel_hdr->sh_size -= rel_hdr->sh_entsize; \ |
0672748a | 2685 | \ |
545fd46b MR |
2686 | memmove (rel, rel + count, \ |
2687 | (relend - rel - count) * sizeof (*rel)); \ | |
0672748a | 2688 | \ |
86f7d49b | 2689 | input_section->reloc_count--; \ |
545fd46b | 2690 | relend -= count; \ |
0672748a L |
2691 | rel--; \ |
2692 | continue; \ | |
2693 | } \ | |
2694 | } \ | |
2695 | \ | |
a134cc9b | 2696 | for (i_ = 0; i_ < count; i_++) \ |
545fd46b | 2697 | { \ |
a134cc9b HPN |
2698 | rel[i_].r_info = 0; \ |
2699 | rel[i_].r_addend = 0; \ | |
545fd46b MR |
2700 | } \ |
2701 | rel += count - 1; \ | |
0672748a L |
2702 | continue; \ |
2703 | } | |
2704 | ||
a8685210 | 2705 | /* Will a symbol be bound to the definition within the shared |
6f8bcf84 | 2706 | library, if any. A unique symbol can never be bound locally. */ |
55255dae | 2707 | #define SYMBOLIC_BIND(INFO, H) \ |
6f8bcf84 L |
2708 | (!(H)->unique_global \ |
2709 | && ((INFO)->symbolic || ((INFO)->dynamic && !(H)->dynamic))) | |
55255dae | 2710 | |
55172d69 PA |
2711 | #ifdef __cplusplus |
2712 | } | |
2713 | #endif | |
252b5132 | 2714 | #endif /* _LIBELF_H_ */ |