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1 | /* BFD back-end data structures for ELF files. | |
2 | Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 | |
3 | Free Software Foundation, Inc. | |
4 | Written by Cygnus Support. | |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #ifndef _LIBELF_H_ | |
23 | #define _LIBELF_H_ 1 | |
24 | ||
25 | #include "elf/common.h" | |
26 | #include "elf/internal.h" | |
27 | #include "elf/external.h" | |
28 | #include "bfdlink.h" | |
29 | ||
30 | /* The number of entries in a section is its size divided by the size | |
31 | of a single entry. This is normally only applicable to reloc and | |
32 | symbol table sections. */ | |
33 | #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_size / (shdr)->sh_entsize) | |
34 | ||
35 | /* If size isn't specified as 64 or 32, NAME macro should fail. */ | |
36 | /* Do not "beautify" the CONCAT* macro args. Traditional C will not | |
37 | remove whitespace added here, and thus will fail to concatenate | |
38 | the tokens. */ | |
39 | #ifndef NAME | |
40 | #if ARCH_SIZE==64 | |
41 | #define NAME(x,y) CONCAT4 (x,64,_,y) | |
42 | #endif | |
43 | #if ARCH_SIZE==32 | |
44 | #define NAME(x,y) CONCAT4 (x,32,_,y) | |
45 | #endif | |
46 | #endif | |
47 | ||
48 | #ifndef NAME | |
49 | #define NAME(x,y) CONCAT4 (x,NOSIZE,_,y) | |
50 | #endif | |
51 | ||
52 | #define ElfNAME(X) NAME(Elf,X) | |
53 | #define elfNAME(X) NAME(elf,X) | |
54 | ||
55 | /* Information held for an ELF symbol. The first field is the | |
56 | corresponding asymbol. Every symbol is an ELF file is actually a | |
57 | pointer to this structure, although it is often handled as a | |
58 | pointer to an asymbol. */ | |
59 | ||
60 | typedef struct | |
61 | { | |
62 | /* The BFD symbol. */ | |
63 | asymbol symbol; | |
64 | /* ELF symbol information. */ | |
65 | Elf_Internal_Sym internal_elf_sym; | |
66 | /* Backend specific information. */ | |
67 | union | |
68 | { | |
69 | unsigned int hppa_arg_reloc; | |
70 | PTR mips_extr; | |
71 | PTR any; | |
72 | } | |
73 | tc_data; | |
74 | ||
75 | /* Version information. This is from an Elf_Internal_Versym | |
76 | structure in a SHT_GNU_versym section. It is zero if there is no | |
77 | version information. */ | |
78 | unsigned short version; | |
79 | ||
80 | } elf_symbol_type; | |
81 | \f | |
82 | struct elf_strtab_hash; | |
83 | ||
84 | /* ELF linker hash table entries. */ | |
85 | ||
86 | struct elf_link_hash_entry | |
87 | { | |
88 | struct bfd_link_hash_entry root; | |
89 | ||
90 | /* Symbol index in output file. This is initialized to -1. It is | |
91 | set to -2 if the symbol is used by a reloc. */ | |
92 | long indx; | |
93 | ||
94 | /* Symbol index as a dynamic symbol. Initialized to -1, and remains | |
95 | -1 if this is not a dynamic symbol. */ | |
96 | /* ??? Note that this is consistently used as a synonym for tests | |
97 | against whether we can perform various simplifying transformations | |
98 | to the code. (E.g. changing a pc-relative jump to a PLT entry | |
99 | into a pc-relative jump to the target function.) That test, which | |
100 | is often relatively complex, and someplaces wrong or incomplete, | |
101 | should really be replaced by a predicate in elflink.c. | |
102 | ||
103 | End result: this field -1 does not indicate that the symbol is | |
104 | not in the dynamic symbol table, but rather that the symbol is | |
105 | not visible outside this DSO. */ | |
106 | long dynindx; | |
107 | ||
108 | /* String table index in .dynstr if this is a dynamic symbol. */ | |
109 | unsigned long dynstr_index; | |
110 | ||
111 | /* Hash value of the name computed using the ELF hash function. */ | |
112 | unsigned long elf_hash_value; | |
113 | ||
114 | /* If this is a weak defined symbol from a dynamic object, this | |
115 | field points to a defined symbol with the same value, if there is | |
116 | one. Otherwise it is NULL. */ | |
117 | struct elf_link_hash_entry *weakdef; | |
118 | ||
119 | /* If this symbol is used in the linker created sections, the processor | |
120 | specific backend uses this field to map the field into the offset | |
121 | from the beginning of the section. */ | |
122 | struct elf_linker_section_pointers *linker_section_pointer; | |
123 | ||
124 | /* Version information. */ | |
125 | union | |
126 | { | |
127 | /* This field is used for a symbol which is not defined in a | |
128 | regular object. It points to the version information read in | |
129 | from the dynamic object. */ | |
130 | Elf_Internal_Verdef *verdef; | |
131 | /* This field is used for a symbol which is defined in a regular | |
132 | object. It is set up in size_dynamic_sections. It points to | |
133 | the version information we should write out for this symbol. */ | |
134 | struct bfd_elf_version_tree *vertree; | |
135 | } verinfo; | |
136 | ||
137 | /* Virtual table entry use information. This array is nominally of size | |
138 | size/sizeof(target_void_pointer), though we have to be able to assume | |
139 | and track a size while the symbol is still undefined. It is indexed | |
140 | via offset/sizeof(target_void_pointer). */ | |
141 | size_t vtable_entries_size; | |
142 | boolean *vtable_entries_used; | |
143 | ||
144 | /* Virtual table derivation info. */ | |
145 | struct elf_link_hash_entry *vtable_parent; | |
146 | ||
147 | /* If this symbol requires an entry in the global offset table, the | |
148 | processor specific backend uses this field to track usage and | |
149 | final offset. We use a union and two names primarily to document | |
150 | the intent of any particular piece of code. The field should be | |
151 | used as a count until size_dynamic_sections, at which point the | |
152 | contents of the .got is fixed. Afterward, if this field is -1, | |
153 | then the symbol does not require a global offset table entry. */ | |
154 | union | |
155 | { | |
156 | bfd_signed_vma refcount; | |
157 | bfd_vma offset; | |
158 | } got; | |
159 | ||
160 | /* Same, but tracks a procedure linkage table entry. */ | |
161 | union | |
162 | { | |
163 | bfd_signed_vma refcount; | |
164 | bfd_vma offset; | |
165 | } plt; | |
166 | ||
167 | /* Symbol size. */ | |
168 | bfd_size_type size; | |
169 | ||
170 | /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */ | |
171 | char type; | |
172 | ||
173 | /* Symbol st_other value, symbol visibility. */ | |
174 | unsigned char other; | |
175 | ||
176 | /* Some flags; legal values follow. */ | |
177 | unsigned short elf_link_hash_flags; | |
178 | /* Symbol is referenced by a non-shared object. */ | |
179 | #define ELF_LINK_HASH_REF_REGULAR 01 | |
180 | /* Symbol is defined by a non-shared object. */ | |
181 | #define ELF_LINK_HASH_DEF_REGULAR 02 | |
182 | /* Symbol is referenced by a shared object. */ | |
183 | #define ELF_LINK_HASH_REF_DYNAMIC 04 | |
184 | /* Symbol is defined by a shared object. */ | |
185 | #define ELF_LINK_HASH_DEF_DYNAMIC 010 | |
186 | /* Symbol has a non-weak reference from a non-shared object. */ | |
187 | #define ELF_LINK_HASH_REF_REGULAR_NONWEAK 020 | |
188 | /* Dynamic symbol has been adjustd. */ | |
189 | #define ELF_LINK_HASH_DYNAMIC_ADJUSTED 040 | |
190 | /* Symbol needs a copy reloc. */ | |
191 | #define ELF_LINK_HASH_NEEDS_COPY 0100 | |
192 | /* Symbol needs a procedure linkage table entry. */ | |
193 | #define ELF_LINK_HASH_NEEDS_PLT 0200 | |
194 | /* Symbol appears in a non-ELF input file. */ | |
195 | #define ELF_LINK_NON_ELF 0400 | |
196 | /* Symbol should be marked as hidden in the version information. */ | |
197 | #define ELF_LINK_HIDDEN 01000 | |
198 | /* Symbol was forced to local scope due to a version script file. */ | |
199 | #define ELF_LINK_FORCED_LOCAL 02000 | |
200 | /* Symbol was marked during garbage collection. */ | |
201 | #define ELF_LINK_HASH_MARK 04000 | |
202 | /* Symbol is referenced by a non-GOT/non-PLT relocation. This is | |
203 | not currently set by all the backends. */ | |
204 | #define ELF_LINK_NON_GOT_REF 010000 | |
205 | }; | |
206 | ||
207 | /* Records local symbols to be emitted in the dynamic symbol table. */ | |
208 | ||
209 | struct elf_link_local_dynamic_entry | |
210 | { | |
211 | struct elf_link_local_dynamic_entry *next; | |
212 | ||
213 | /* The input bfd this symbol came from. */ | |
214 | bfd *input_bfd; | |
215 | ||
216 | /* The index of the local symbol being copied. */ | |
217 | long input_indx; | |
218 | ||
219 | /* The index in the outgoing dynamic symbol table. */ | |
220 | long dynindx; | |
221 | ||
222 | /* A copy of the input symbol. */ | |
223 | Elf_Internal_Sym isym; | |
224 | }; | |
225 | ||
226 | enum elf_link_info_type | |
227 | { | |
228 | ELF_INFO_TYPE_NONE, | |
229 | ELF_INFO_TYPE_STABS, | |
230 | ELF_INFO_TYPE_MERGE, | |
231 | ELF_INFO_TYPE_EH_FRAME, | |
232 | ELF_INFO_TYPE_EH_FRAME_HDR, | |
233 | ELF_INFO_TYPE_LAST | |
234 | }; | |
235 | ||
236 | /* ELF linker hash table. */ | |
237 | ||
238 | struct elf_link_hash_table | |
239 | { | |
240 | struct bfd_link_hash_table root; | |
241 | ||
242 | /* Whether we have created the special dynamic sections required | |
243 | when linking against or generating a shared object. */ | |
244 | boolean dynamic_sections_created; | |
245 | ||
246 | /* The BFD used to hold special sections created by the linker. | |
247 | This will be the first BFD found which requires these sections to | |
248 | be created. */ | |
249 | bfd *dynobj; | |
250 | ||
251 | /* The value to use when initialising got.refcount/offset and | |
252 | plt.refcount/offset in an elf_link_hash_entry. Set to zero when | |
253 | the values are refcounts. Set to -1 in size_dynamic_sections | |
254 | when the values may be offsets. */ | |
255 | bfd_signed_vma init_refcount; | |
256 | ||
257 | /* The number of symbols found in the link which must be put into | |
258 | the .dynsym section. */ | |
259 | bfd_size_type dynsymcount; | |
260 | ||
261 | /* The string table of dynamic symbols, which becomes the .dynstr | |
262 | section. */ | |
263 | struct elf_strtab_hash *dynstr; | |
264 | ||
265 | /* The number of buckets in the hash table in the .hash section. | |
266 | This is based on the number of dynamic symbols. */ | |
267 | bfd_size_type bucketcount; | |
268 | ||
269 | /* A linked list of DT_NEEDED names found in dynamic objects | |
270 | included in the link. */ | |
271 | struct bfd_link_needed_list *needed; | |
272 | ||
273 | /* The _GLOBAL_OFFSET_TABLE_ symbol. */ | |
274 | struct elf_link_hash_entry *hgot; | |
275 | ||
276 | /* A pointer to information used to link stabs in sections. */ | |
277 | PTR stab_info; | |
278 | ||
279 | /* A pointer to information used to merge SEC_MERGE sections. */ | |
280 | PTR merge_info; | |
281 | ||
282 | /* A linked list of local symbols to be added to .dynsym. */ | |
283 | struct elf_link_local_dynamic_entry *dynlocal; | |
284 | ||
285 | /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic | |
286 | objects included in the link. */ | |
287 | struct bfd_link_needed_list *runpath; | |
288 | }; | |
289 | ||
290 | /* Look up an entry in an ELF linker hash table. */ | |
291 | ||
292 | #define elf_link_hash_lookup(table, string, create, copy, follow) \ | |
293 | ((struct elf_link_hash_entry *) \ | |
294 | bfd_link_hash_lookup (&(table)->root, (string), (create), \ | |
295 | (copy), (follow))) | |
296 | ||
297 | /* Traverse an ELF linker hash table. */ | |
298 | ||
299 | #define elf_link_hash_traverse(table, func, info) \ | |
300 | (bfd_link_hash_traverse \ | |
301 | (&(table)->root, \ | |
302 | (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \ | |
303 | (info))) | |
304 | ||
305 | /* Get the ELF linker hash table from a link_info structure. */ | |
306 | ||
307 | #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash)) | |
308 | ||
309 | /* Returns true if the hash table is a struct elf_link_hash_table. */ | |
310 | #define is_elf_hash_table(p) \ | |
311 | ((p)->hash->type == bfd_link_elf_hash_table) | |
312 | ||
313 | /* Used by bfd_section_from_r_symndx to cache a small number of local | |
314 | symbol to section mappings. */ | |
315 | #define LOCAL_SYM_CACHE_SIZE 32 | |
316 | struct sym_sec_cache | |
317 | { | |
318 | bfd *abfd; | |
319 | unsigned long indx[LOCAL_SYM_CACHE_SIZE]; | |
320 | asection *sec[LOCAL_SYM_CACHE_SIZE]; | |
321 | }; | |
322 | \f | |
323 | /* Constant information held for an ELF backend. */ | |
324 | ||
325 | struct elf_size_info { | |
326 | unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr; | |
327 | unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note; | |
328 | ||
329 | /* The size of entries in the .hash section. */ | |
330 | unsigned char sizeof_hash_entry; | |
331 | ||
332 | /* The number of internal relocations to allocate per external | |
333 | relocation entry. */ | |
334 | unsigned char int_rels_per_ext_rel; | |
335 | ||
336 | unsigned char arch_size, file_align; | |
337 | unsigned char elfclass, ev_current; | |
338 | int (*write_out_phdrs) | |
339 | PARAMS ((bfd *, const Elf_Internal_Phdr *, unsigned int)); | |
340 | boolean (*write_shdrs_and_ehdr) | |
341 | PARAMS ((bfd *)); | |
342 | void (*write_relocs) | |
343 | PARAMS ((bfd *, asection *, PTR)); | |
344 | void (*swap_symbol_out) | |
345 | PARAMS ((bfd *, const Elf_Internal_Sym *, PTR)); | |
346 | boolean (*slurp_reloc_table) | |
347 | PARAMS ((bfd *, asection *, asymbol **, boolean)); | |
348 | long (*slurp_symbol_table) | |
349 | PARAMS ((bfd *, asymbol **, boolean)); | |
350 | void (*swap_dyn_in) | |
351 | PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); | |
352 | void (*swap_dyn_out) | |
353 | PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR)); | |
354 | ||
355 | /* This function, if defined, is called to swap in a REL | |
356 | relocation. If an external relocation corresponds to more than | |
357 | one internal relocation, then all relocations are swapped in at | |
358 | once. */ | |
359 | void (*swap_reloc_in) | |
360 | PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rel *)); | |
361 | ||
362 | /* This function, if defined, is called to swap out a REL | |
363 | relocation. */ | |
364 | void (*swap_reloc_out) | |
365 | PARAMS ((bfd *, const Elf_Internal_Rel *, bfd_byte *)); | |
366 | ||
367 | /* This function, if defined, is called to swap in a RELA | |
368 | relocation. If an external relocation corresponds to more than | |
369 | one internal relocation, then all relocations are swapped in at | |
370 | once. */ | |
371 | void (*swap_reloca_in) | |
372 | PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *)); | |
373 | ||
374 | /* This function, if defined, is called to swap out a RELA | |
375 | relocation. */ | |
376 | void (*swap_reloca_out) | |
377 | PARAMS ((bfd *, const Elf_Internal_Rela *, bfd_byte *)); | |
378 | ||
379 | }; | |
380 | ||
381 | #define elf_symbol_from(ABFD,S) \ | |
382 | (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \ | |
383 | && (S)->the_bfd->tdata.elf_obj_data != 0) \ | |
384 | ? (elf_symbol_type *) (S) \ | |
385 | : 0) | |
386 | ||
387 | enum elf_reloc_type_class { | |
388 | reloc_class_normal, | |
389 | reloc_class_relative, | |
390 | reloc_class_plt, | |
391 | reloc_class_copy | |
392 | }; | |
393 | ||
394 | struct elf_reloc_cookie | |
395 | { | |
396 | Elf_Internal_Rela *rels, *rel, *relend; | |
397 | void *locsyms; | |
398 | bfd *abfd; | |
399 | size_t locsymcount; | |
400 | size_t extsymoff; | |
401 | struct elf_link_hash_entry **sym_hashes; | |
402 | boolean bad_symtab; | |
403 | }; | |
404 | ||
405 | struct elf_backend_data | |
406 | { | |
407 | /* The architecture for this backend. */ | |
408 | enum bfd_architecture arch; | |
409 | ||
410 | /* The ELF machine code (EM_xxxx) for this backend. */ | |
411 | int elf_machine_code; | |
412 | ||
413 | /* The maximum page size for this backend. */ | |
414 | bfd_vma maxpagesize; | |
415 | ||
416 | /* A function to translate an ELF RELA relocation to a BFD arelent | |
417 | structure. */ | |
418 | void (*elf_info_to_howto) | |
419 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); | |
420 | ||
421 | /* A function to translate an ELF REL relocation to a BFD arelent | |
422 | structure. */ | |
423 | void (*elf_info_to_howto_rel) | |
424 | PARAMS ((bfd *, arelent *, Elf_Internal_Rel *)); | |
425 | ||
426 | /* A function to determine whether a symbol is global when | |
427 | partitioning the symbol table into local and global symbols. | |
428 | This should be NULL for most targets, in which case the correct | |
429 | thing will be done. MIPS ELF, at least on the Irix 5, has | |
430 | special requirements. */ | |
431 | boolean (*elf_backend_sym_is_global) | |
432 | PARAMS ((bfd *, asymbol *)); | |
433 | ||
434 | /* The remaining functions are hooks which are called only if they | |
435 | are not NULL. */ | |
436 | ||
437 | /* A function to permit a backend specific check on whether a | |
438 | particular BFD format is relevant for an object file, and to | |
439 | permit the backend to set any global information it wishes. When | |
440 | this is called elf_elfheader is set, but anything else should be | |
441 | used with caution. If this returns false, the check_format | |
442 | routine will return a bfd_error_wrong_format error. */ | |
443 | boolean (*elf_backend_object_p) | |
444 | PARAMS ((bfd *)); | |
445 | ||
446 | /* A function to do additional symbol processing when reading the | |
447 | ELF symbol table. This is where any processor-specific special | |
448 | section indices are handled. */ | |
449 | void (*elf_backend_symbol_processing) | |
450 | PARAMS ((bfd *, asymbol *)); | |
451 | ||
452 | /* A function to do additional symbol processing after reading the | |
453 | entire ELF symbol table. */ | |
454 | boolean (*elf_backend_symbol_table_processing) | |
455 | PARAMS ((bfd *, elf_symbol_type *, unsigned int)); | |
456 | ||
457 | /* A function to set the type of the info field. Processor-specific | |
458 | types should be handled here. */ | |
459 | int (*elf_backend_get_symbol_type) | |
460 | PARAMS (( Elf_Internal_Sym *, int)); | |
461 | ||
462 | /* A function to do additional processing on the ELF section header | |
463 | just before writing it out. This is used to set the flags and | |
464 | type fields for some sections, or to actually write out data for | |
465 | unusual sections. */ | |
466 | boolean (*elf_backend_section_processing) | |
467 | PARAMS ((bfd *, Elf32_Internal_Shdr *)); | |
468 | ||
469 | /* A function to handle unusual section types when creating BFD | |
470 | sections from ELF sections. */ | |
471 | boolean (*elf_backend_section_from_shdr) | |
472 | PARAMS ((bfd *, Elf32_Internal_Shdr *, char *)); | |
473 | ||
474 | /* A function to convert machine dependent section header flags to | |
475 | BFD internal section header flags. */ | |
476 | boolean (*elf_backend_section_flags) | |
477 | PARAMS ((flagword *, Elf32_Internal_Shdr *)); | |
478 | ||
479 | /* A function to handle unusual program segment types when creating BFD | |
480 | sections from ELF program segments. */ | |
481 | boolean (*elf_backend_section_from_phdr) | |
482 | PARAMS ((bfd *, Elf32_Internal_Phdr *, int)); | |
483 | ||
484 | /* A function to set up the ELF section header for a BFD section in | |
485 | preparation for writing it out. This is where the flags and type | |
486 | fields are set for unusual sections. */ | |
487 | boolean (*elf_backend_fake_sections) | |
488 | PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *)); | |
489 | ||
490 | /* A function to get the ELF section index for a BFD section. If | |
491 | this returns true, the section was found. If it is a normal ELF | |
492 | section, *RETVAL should be left unchanged. If it is not a normal | |
493 | ELF section *RETVAL should be set to the SHN_xxxx index. */ | |
494 | boolean (*elf_backend_section_from_bfd_section) | |
495 | PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *retval)); | |
496 | ||
497 | /* If this field is not NULL, it is called by the add_symbols phase | |
498 | of a link just before adding a symbol to the global linker hash | |
499 | table. It may modify any of the fields as it wishes. If *NAME | |
500 | is set to NULL, the symbol will be skipped rather than being | |
501 | added to the hash table. This function is responsible for | |
502 | handling all processor dependent symbol bindings and section | |
503 | indices, and must set at least *FLAGS and *SEC for each processor | |
504 | dependent case; failure to do so will cause a link error. */ | |
505 | boolean (*elf_add_symbol_hook) | |
506 | PARAMS ((bfd *abfd, struct bfd_link_info *info, | |
507 | const Elf_Internal_Sym *, const char **name, | |
508 | flagword *flags, asection **sec, bfd_vma *value)); | |
509 | ||
510 | /* If this field is not NULL, it is called by the elf_link_output_sym | |
511 | phase of a link for each symbol which will appear in the object file. */ | |
512 | boolean (*elf_backend_link_output_symbol_hook) | |
513 | PARAMS ((bfd *, struct bfd_link_info *info, const char *, | |
514 | Elf_Internal_Sym *, asection *)); | |
515 | ||
516 | /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend | |
517 | linker the first time it encounters a dynamic object in the link. | |
518 | This function must create any sections required for dynamic | |
519 | linking. The ABFD argument is a dynamic object. The .interp, | |
520 | .dynamic, .dynsym, .dynstr, and .hash functions have already been | |
521 | created, and this function may modify the section flags if | |
522 | desired. This function will normally create the .got and .plt | |
523 | sections, but different backends have different requirements. */ | |
524 | boolean (*elf_backend_create_dynamic_sections) | |
525 | PARAMS ((bfd *abfd, struct bfd_link_info *info)); | |
526 | ||
527 | /* The CHECK_RELOCS function is called by the add_symbols phase of | |
528 | the ELF backend linker. It is called once for each section with | |
529 | relocs of an object file, just after the symbols for the object | |
530 | file have been added to the global linker hash table. The | |
531 | function must look through the relocs and do any special handling | |
532 | required. This generally means allocating space in the global | |
533 | offset table, and perhaps allocating space for a reloc. The | |
534 | relocs are always passed as Rela structures; if the section | |
535 | actually uses Rel structures, the r_addend field will always be | |
536 | zero. */ | |
537 | boolean (*check_relocs) | |
538 | PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o, | |
539 | const Elf_Internal_Rela *relocs)); | |
540 | ||
541 | /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend | |
542 | linker for every symbol which is defined by a dynamic object and | |
543 | referenced by a regular object. This is called after all the | |
544 | input files have been seen, but before the SIZE_DYNAMIC_SECTIONS | |
545 | function has been called. The hash table entry should be | |
546 | bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be | |
547 | defined in a section from a dynamic object. Dynamic object | |
548 | sections are not included in the final link, and this function is | |
549 | responsible for changing the value to something which the rest of | |
550 | the link can deal with. This will normally involve adding an | |
551 | entry to the .plt or .got or some such section, and setting the | |
552 | symbol to point to that. */ | |
553 | boolean (*elf_backend_adjust_dynamic_symbol) | |
554 | PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h)); | |
555 | ||
556 | /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker | |
557 | after all the linker input files have been seen but before the | |
558 | section sizes have been set. This is called after | |
559 | ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */ | |
560 | boolean (*elf_backend_always_size_sections) | |
561 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); | |
562 | ||
563 | /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend | |
564 | linker after all the linker input files have been seen but before | |
565 | the sections sizes have been set. This is called after | |
566 | ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols. | |
567 | It is only called when linking against a dynamic object. It must | |
568 | set the sizes of the dynamic sections, and may fill in their | |
569 | contents as well. The generic ELF linker can handle the .dynsym, | |
570 | .dynstr and .hash sections. This function must handle the | |
571 | .interp section and any sections created by the | |
572 | CREATE_DYNAMIC_SECTIONS entry point. */ | |
573 | boolean (*elf_backend_size_dynamic_sections) | |
574 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); | |
575 | ||
576 | /* The RELOCATE_SECTION function is called by the ELF backend linker | |
577 | to handle the relocations for a section. | |
578 | ||
579 | The relocs are always passed as Rela structures; if the section | |
580 | actually uses Rel structures, the r_addend field will always be | |
581 | zero. | |
582 | ||
583 | This function is responsible for adjust the section contents as | |
584 | necessary, and (if using Rela relocs and generating a | |
585 | relocateable output file) adjusting the reloc addend as | |
586 | necessary. | |
587 | ||
588 | This function does not have to worry about setting the reloc | |
589 | address or the reloc symbol index. | |
590 | ||
591 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
592 | ||
593 | LOCAL_SECTIONS is an array giving the section in the input file | |
594 | corresponding to the st_shndx field of each local symbol. | |
595 | ||
596 | The global hash table entry for the global symbols can be found | |
597 | via elf_sym_hashes (input_bfd). | |
598 | ||
599 | When generating relocateable output, this function must handle | |
600 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
601 | going to be the section symbol corresponding to the output | |
602 | section, which means that the addend must be adjusted | |
603 | accordingly. */ | |
604 | boolean (*elf_backend_relocate_section) | |
605 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info, | |
606 | bfd *input_bfd, asection *input_section, bfd_byte *contents, | |
607 | Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms, | |
608 | asection **local_sections)); | |
609 | ||
610 | /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend | |
611 | linker just before it writes a symbol out to the .dynsym section. | |
612 | The processor backend may make any required adjustment to the | |
613 | symbol. It may also take the opportunity to set contents of the | |
614 | dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on | |
615 | all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called | |
616 | on those symbols which are defined by a dynamic object. */ | |
617 | boolean (*elf_backend_finish_dynamic_symbol) | |
618 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info, | |
619 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)); | |
620 | ||
621 | /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend | |
622 | linker just before it writes all the dynamic sections out to the | |
623 | output file. The FINISH_DYNAMIC_SYMBOL will have been called on | |
624 | all dynamic symbols. */ | |
625 | boolean (*elf_backend_finish_dynamic_sections) | |
626 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); | |
627 | ||
628 | /* A function to do any beginning processing needed for the ELF file | |
629 | before building the ELF headers and computing file positions. */ | |
630 | void (*elf_backend_begin_write_processing) | |
631 | PARAMS ((bfd *, struct bfd_link_info *)); | |
632 | ||
633 | /* A function to do any final processing needed for the ELF file | |
634 | before writing it out. The LINKER argument is true if this BFD | |
635 | was created by the ELF backend linker. */ | |
636 | void (*elf_backend_final_write_processing) | |
637 | PARAMS ((bfd *, boolean linker)); | |
638 | ||
639 | /* This function is called by get_program_header_size. It should | |
640 | return the number of additional program segments which this BFD | |
641 | will need. It should return -1 on error. */ | |
642 | int (*elf_backend_additional_program_headers) | |
643 | PARAMS ((bfd *)); | |
644 | ||
645 | /* This function is called to modify an existing segment map in a | |
646 | backend specific fashion. */ | |
647 | boolean (*elf_backend_modify_segment_map) | |
648 | PARAMS ((bfd *)); | |
649 | ||
650 | /* This function is called during section gc to discover the section a | |
651 | particular relocation refers to. It need not be defined for hosts | |
652 | that have no queer relocation types. */ | |
653 | asection * (*gc_mark_hook) | |
654 | PARAMS ((bfd *abfd, struct bfd_link_info *, Elf_Internal_Rela *, | |
655 | struct elf_link_hash_entry *h, Elf_Internal_Sym *)); | |
656 | ||
657 | /* This function, if defined, is called during the sweep phase of gc | |
658 | in order that a backend might update any data structures it might | |
659 | be maintaining. */ | |
660 | boolean (*gc_sweep_hook) | |
661 | PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o, | |
662 | const Elf_Internal_Rela *relocs)); | |
663 | ||
664 | /* This function, if defined, is called after the ELF headers have | |
665 | been created. This allows for things like the OS and ABI versions | |
666 | to be changed. */ | |
667 | void (*elf_backend_post_process_headers) | |
668 | PARAMS ((bfd *, struct bfd_link_info *)); | |
669 | ||
670 | /* This function, if defined, prints a symbol to file and returns the | |
671 | name of the symbol to be printed. It should return NULL to fall | |
672 | back to default symbol printing. */ | |
673 | const char *(*elf_backend_print_symbol_all) | |
674 | PARAMS ((bfd *, PTR, asymbol *)); | |
675 | ||
676 | /* This function, if defined, is called after all local symbols and | |
677 | global symbols converted to locals are emited into the symtab | |
678 | section. It allows the backend to emit special global symbols | |
679 | not handled in the hash table. */ | |
680 | boolean (*elf_backend_output_arch_syms) | |
681 | PARAMS ((bfd *, struct bfd_link_info *, PTR, | |
682 | boolean (*) (PTR, const char *, Elf_Internal_Sym *, asection *))); | |
683 | ||
684 | /* Copy any information related to dynamic linking from a pre-existing | |
685 | symbol to a newly created symbol. Also called to copy flags and | |
686 | other back-end info to a weakdef, in which case the symbol is not | |
687 | newly created and plt/got refcounts and dynamic indices should not | |
688 | be copied. */ | |
689 | void (*elf_backend_copy_indirect_symbol) | |
690 | PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *)); | |
691 | ||
692 | /* Modify any information related to dynamic linking such that the | |
693 | symbol is not exported. */ | |
694 | void (*elf_backend_hide_symbol) | |
695 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
696 | ||
697 | /* Emit relocations. Overrides default routine for emitting relocs, | |
698 | except during a relocatable link, or if all relocs are being emitted. */ | |
699 | void (*elf_backend_emit_relocs) | |
700 | PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *)); | |
701 | ||
702 | /* Count relocations. Not called for relocatable links | |
703 | or if all relocs are being preserved in the output. */ | |
704 | unsigned int (*elf_backend_count_relocs) | |
705 | PARAMS ((asection *, Elf_Internal_Rela *)); | |
706 | ||
707 | /* This function, if defined, is called when an NT_PRSTATUS note is found | |
708 | in a core file. */ | |
709 | boolean (*elf_backend_grok_prstatus) | |
710 | PARAMS ((bfd *, Elf_Internal_Note *)); | |
711 | ||
712 | /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO | |
713 | note is found in a core file. */ | |
714 | boolean (*elf_backend_grok_psinfo) | |
715 | PARAMS ((bfd *, Elf_Internal_Note *)); | |
716 | ||
717 | /* Functions to print VMAs. Special code to handle 64 bit ELF files. */ | |
718 | void (* elf_backend_sprintf_vma) | |
719 | PARAMS ((bfd *, char *, bfd_vma)); | |
720 | void (* elf_backend_fprintf_vma) | |
721 | PARAMS ((bfd *, PTR, bfd_vma)); | |
722 | ||
723 | /* This function returns class of a reloc type. */ | |
724 | enum elf_reloc_type_class (*elf_backend_reloc_type_class) | |
725 | PARAMS ((const Elf_Internal_Rela *)); | |
726 | ||
727 | /* This function, if defined, removes information about discarded functions | |
728 | from other sections which mention them. */ | |
729 | boolean (*elf_backend_discard_info) | |
730 | PARAMS ((bfd *, struct elf_reloc_cookie *, struct bfd_link_info *)); | |
731 | ||
732 | /* This function, if defined, signals that the function above has removed | |
733 | the discarded relocations for this section. */ | |
734 | boolean (*elf_backend_ignore_discarded_relocs) | |
735 | PARAMS ((asection *)); | |
736 | ||
737 | /* This function, if defined, may write out the given section. | |
738 | Returns true if it did so and false if the caller should. */ | |
739 | boolean (*elf_backend_write_section) | |
740 | PARAMS ((bfd *, asection *, bfd_byte *)); | |
741 | ||
742 | /* The swapping table to use when dealing with ECOFF information. | |
743 | Used for the MIPS ELF .mdebug section. */ | |
744 | const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap; | |
745 | ||
746 | /* Alternate EM_xxxx machine codes for this backend. */ | |
747 | int elf_machine_alt1; | |
748 | int elf_machine_alt2; | |
749 | ||
750 | const struct elf_size_info *s; | |
751 | ||
752 | /* offset of the _GLOBAL_OFFSET_TABLE_ symbol from the start of the | |
753 | .got section */ | |
754 | bfd_vma got_symbol_offset; | |
755 | ||
756 | /* The size in bytes of the headers for the GOT and PLT. This includes | |
757 | the so-called reserved entries on some systems. */ | |
758 | bfd_vma got_header_size; | |
759 | bfd_vma plt_header_size; | |
760 | ||
761 | /* This is true if the linker should act like collect and gather | |
762 | global constructors and destructors by name. This is true for | |
763 | MIPS ELF because the Irix 5 tools can not handle the .init | |
764 | section. */ | |
765 | unsigned collect : 1; | |
766 | ||
767 | /* This is true if the linker should ignore changes to the type of a | |
768 | symbol. This is true for MIPS ELF because some Irix 5 objects | |
769 | record undefined functions as STT_OBJECT although the definitions | |
770 | are STT_FUNC. */ | |
771 | unsigned type_change_ok : 1; | |
772 | ||
773 | /* Whether the backend may use REL relocations. (Some backends use | |
774 | both REL and RELA relocations, and this flag is set for those | |
775 | backends.) */ | |
776 | unsigned may_use_rel_p : 1; | |
777 | ||
778 | /* Whether the backend may use RELA relocations. (Some backends use | |
779 | both REL and RELA relocations, and this flag is set for those | |
780 | backends.) */ | |
781 | unsigned may_use_rela_p : 1; | |
782 | ||
783 | /* Whether the default relocation type is RELA. If a backend with | |
784 | this flag set wants REL relocations for a particular section, | |
785 | it must note that explicitly. Similarly, if this flag is clear, | |
786 | and the backend wants RELA relocations for a particular | |
787 | section. */ | |
788 | unsigned default_use_rela_p : 1; | |
789 | ||
790 | /* True if addresses "naturally" sign extend. This is used when | |
791 | swapping in from Elf32 when BFD64. */ | |
792 | unsigned sign_extend_vma : 1; | |
793 | ||
794 | unsigned want_got_plt : 1; | |
795 | unsigned plt_readonly : 1; | |
796 | unsigned want_plt_sym : 1; | |
797 | unsigned plt_not_loaded : 1; | |
798 | unsigned plt_alignment : 4; | |
799 | unsigned can_gc_sections : 1; | |
800 | unsigned can_refcount : 1; | |
801 | unsigned want_got_sym : 1; | |
802 | unsigned want_dynbss : 1; | |
803 | }; | |
804 | ||
805 | /* Information stored for each BFD section in an ELF file. This | |
806 | structure is allocated by elf_new_section_hook. */ | |
807 | ||
808 | struct bfd_elf_section_data | |
809 | { | |
810 | /* The ELF header for this section. */ | |
811 | Elf_Internal_Shdr this_hdr; | |
812 | ||
813 | /* The ELF header for the reloc section associated with this | |
814 | section, if any. */ | |
815 | Elf_Internal_Shdr rel_hdr; | |
816 | ||
817 | /* If there is a second reloc section associated with this section, | |
818 | as can happen on Irix 6, this field points to the header. */ | |
819 | Elf_Internal_Shdr *rel_hdr2; | |
820 | ||
821 | /* The number of relocations currently assigned to REL_HDR. */ | |
822 | unsigned int rel_count; | |
823 | ||
824 | /* The number of relocations currently assigned to REL_HDR2. */ | |
825 | unsigned int rel_count2; | |
826 | ||
827 | /* A pointer to a linked list tracking dynamic relocs copied for | |
828 | local symbols. */ | |
829 | PTR local_dynrel; | |
830 | ||
831 | /* A pointer to the bfd section used for dynamic relocs. */ | |
832 | asection *sreloc; | |
833 | ||
834 | /* The ELF section number of this section. Only used for an output | |
835 | file. */ | |
836 | int this_idx; | |
837 | ||
838 | /* The ELF section number of the reloc section indicated by | |
839 | REL_HDR if any. Only used for an output file. */ | |
840 | int rel_idx; | |
841 | ||
842 | /* The ELF section number of the reloc section indicated by | |
843 | REL_HDR2 if any. Only used for an output file. */ | |
844 | int rel_idx2; | |
845 | ||
846 | /* Used by the backend linker to store the symbol hash table entries | |
847 | associated with relocs against global symbols. */ | |
848 | struct elf_link_hash_entry **rel_hashes; | |
849 | ||
850 | /* A pointer to the swapped relocs. If the section uses REL relocs, | |
851 | rather than RELA, all the r_addend fields will be zero. This | |
852 | pointer may be NULL. It is used by the backend linker. */ | |
853 | Elf_Internal_Rela *relocs; | |
854 | ||
855 | /* Used by the backend linker when generating a shared library to | |
856 | record the dynamic symbol index for a section symbol | |
857 | corresponding to this section. A value of 0 means that there is | |
858 | no dynamic symbol for this section. */ | |
859 | long dynindx; | |
860 | ||
861 | /* A pointer used for various section optimizations. */ | |
862 | PTR sec_info; | |
863 | ||
864 | /* Type of that information. */ | |
865 | enum elf_link_info_type sec_info_type; | |
866 | ||
867 | /* Group name, if this section is part of a group. */ | |
868 | const char *group_name; | |
869 | ||
870 | /* A linked list of sections in the group. Circular when used by | |
871 | the linker. */ | |
872 | asection *next_in_group; | |
873 | ||
874 | /* A pointer available for the processor specific ELF backend. */ | |
875 | PTR tdata; | |
876 | ||
877 | /* Nonzero if this section uses RELA relocations, rather than REL. */ | |
878 | unsigned int use_rela_p:1; | |
879 | }; | |
880 | ||
881 | #define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd) | |
882 | #define elf_group_name(sec) (elf_section_data(sec)->group_name) | |
883 | #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group) | |
884 | ||
885 | #define get_elf_backend_data(abfd) \ | |
886 | ((struct elf_backend_data *) (abfd)->xvec->backend_data) | |
887 | ||
888 | /* Enumeration to specify the special section. */ | |
889 | typedef enum elf_linker_section_enum | |
890 | { | |
891 | LINKER_SECTION_UNKNOWN, /* not used */ | |
892 | LINKER_SECTION_GOT, /* .got section for global offset pointers */ | |
893 | LINKER_SECTION_PLT, /* .plt section for generated procedure stubs */ | |
894 | LINKER_SECTION_SDATA, /* .sdata/.sbss section for PowerPC */ | |
895 | LINKER_SECTION_SDATA2, /* .sdata2/.sbss2 section for PowerPC */ | |
896 | LINKER_SECTION_MAX /* # of linker sections */ | |
897 | } elf_linker_section_enum_t; | |
898 | ||
899 | /* Sections created by the linker. */ | |
900 | ||
901 | typedef struct elf_linker_section | |
902 | { | |
903 | char *name; /* name of the section */ | |
904 | char *rel_name; /* name of the associated .rel{,a}. section */ | |
905 | char *bss_name; /* name of a related .bss section */ | |
906 | char *sym_name; /* name of symbol to reference this section */ | |
907 | asection *section; /* pointer to the section */ | |
908 | asection *bss_section; /* pointer to the bss section associated with this */ | |
909 | asection *rel_section; /* pointer to the relocations needed for this section */ | |
910 | struct elf_link_hash_entry *sym_hash; /* pointer to the created symbol hash value */ | |
911 | bfd_vma initial_size; /* initial size before any linker generated allocations */ | |
912 | bfd_vma sym_offset; /* offset of symbol from beginning of section */ | |
913 | bfd_vma hole_size; /* size of reserved address hole in allocation */ | |
914 | bfd_vma hole_offset; /* current offset for the hole */ | |
915 | bfd_vma max_hole_offset; /* maximum offset for the hole */ | |
916 | elf_linker_section_enum_t which; /* which section this is */ | |
917 | boolean hole_written_p; /* whether the hole has been initialized */ | |
918 | unsigned int alignment; /* alignment for the section */ | |
919 | flagword flags; /* flags to use to create the section */ | |
920 | } elf_linker_section_t; | |
921 | ||
922 | /* Linked list of allocated pointer entries. This hangs off of the symbol lists, and | |
923 | provides allows us to return different pointers, based on different addend's. */ | |
924 | ||
925 | typedef struct elf_linker_section_pointers | |
926 | { | |
927 | struct elf_linker_section_pointers *next; /* next allocated pointer for this symbol */ | |
928 | bfd_vma offset; /* offset of pointer from beginning of section */ | |
929 | bfd_vma addend; /* addend used */ | |
930 | elf_linker_section_enum_t which; /* which linker section this is */ | |
931 | boolean written_address_p; /* whether address was written yet */ | |
932 | } elf_linker_section_pointers_t; | |
933 | ||
934 | /* Some private data is stashed away for future use using the tdata pointer | |
935 | in the bfd structure. */ | |
936 | ||
937 | struct elf_obj_tdata | |
938 | { | |
939 | Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */ | |
940 | Elf_Internal_Shdr **elf_sect_ptr; | |
941 | Elf_Internal_Phdr *phdr; | |
942 | struct elf_segment_map *segment_map; | |
943 | struct elf_strtab_hash *strtab_ptr; | |
944 | int num_locals; | |
945 | int num_globals; | |
946 | int num_section_syms; | |
947 | asymbol **section_syms; /* STT_SECTION symbols for each section */ | |
948 | Elf_Internal_Shdr symtab_hdr; | |
949 | Elf_Internal_Shdr shstrtab_hdr; | |
950 | Elf_Internal_Shdr strtab_hdr; | |
951 | Elf_Internal_Shdr dynsymtab_hdr; | |
952 | Elf_Internal_Shdr dynstrtab_hdr; | |
953 | Elf_Internal_Shdr dynversym_hdr; | |
954 | Elf_Internal_Shdr dynverref_hdr; | |
955 | Elf_Internal_Shdr dynverdef_hdr; | |
956 | unsigned int symtab_section, shstrtab_section; | |
957 | unsigned int strtab_section, dynsymtab_section; | |
958 | unsigned int dynversym_section, dynverdef_section, dynverref_section; | |
959 | file_ptr next_file_pos; | |
960 | #if 0 | |
961 | /* we don't need these inside bfd anymore, and I think | |
962 | these weren't used outside bfd. */ | |
963 | void *prstatus; /* The raw /proc prstatus structure */ | |
964 | void *prpsinfo; /* The raw /proc prpsinfo structure */ | |
965 | #endif | |
966 | bfd_vma gp; /* The gp value */ | |
967 | unsigned int gp_size; /* The gp size */ | |
968 | ||
969 | Elf_Internal_Shdr **group_sect_ptr; | |
970 | int num_group; | |
971 | ||
972 | /* Information grabbed from an elf core file. */ | |
973 | int core_signal; | |
974 | int core_pid; | |
975 | int core_lwpid; | |
976 | char* core_program; | |
977 | char* core_command; | |
978 | ||
979 | /* This is set to true if the object was created by the backend | |
980 | linker. */ | |
981 | boolean linker; | |
982 | ||
983 | /* A mapping from external symbols to entries in the linker hash | |
984 | table, used when linking. This is indexed by the symbol index | |
985 | minus the sh_info field of the symbol table header. */ | |
986 | struct elf_link_hash_entry **sym_hashes; | |
987 | ||
988 | /* A mapping from local symbols to offsets into the global offset | |
989 | table, used when linking. This is indexed by the symbol index. | |
990 | Like for the globals, we use a union and two names primarily to | |
991 | document the intent of any particular piece of code. The field | |
992 | should be used as a count until size_dynamic_sections, at which | |
993 | point the contents of the .got is fixed. Afterward, if an entry | |
994 | is -1, then the symbol does not require a global offset table entry. */ | |
995 | union | |
996 | { | |
997 | bfd_signed_vma *refcounts; | |
998 | bfd_vma *offsets; | |
999 | } local_got; | |
1000 | ||
1001 | /* A mapping from local symbols to offsets into the various linker | |
1002 | sections added. This is index by the symbol index. */ | |
1003 | elf_linker_section_pointers_t **linker_section_pointers; | |
1004 | ||
1005 | /* The linker ELF emulation code needs to let the backend ELF linker | |
1006 | know what filename should be used for a dynamic object if the | |
1007 | dynamic object is found using a search. The emulation code then | |
1008 | sometimes needs to know what name was actually used. Until the | |
1009 | file has been added to the linker symbol table, this field holds | |
1010 | the name the linker wants. After it has been added, it holds the | |
1011 | name actually used, which will be the DT_SONAME entry if there is | |
1012 | one. */ | |
1013 | const char *dt_name; | |
1014 | ||
1015 | /* When a reference in a regular object is resolved by a shared | |
1016 | object is loaded into via the DT_NEEDED entries by the linker | |
1017 | ELF emulation code, we need to add the shared object to the | |
1018 | DT_NEEDED list of the resulting binary to indicate the dependency | |
1019 | as if the -l option is passed to the linker. This field holds the | |
1020 | name of the loaded shared object. */ | |
1021 | const char *dt_soname; | |
1022 | ||
1023 | /* Irix 5 often screws up the symbol table, sorting local symbols | |
1024 | after global symbols. This flag is set if the symbol table in | |
1025 | this BFD appears to be screwed up. If it is, we ignore the | |
1026 | sh_info field in the symbol table header, and always read all the | |
1027 | symbols. */ | |
1028 | boolean bad_symtab; | |
1029 | ||
1030 | /* Records the result of `get_program_header_size'. */ | |
1031 | bfd_size_type program_header_size; | |
1032 | ||
1033 | /* Used by find_nearest_line entry point. */ | |
1034 | PTR line_info; | |
1035 | ||
1036 | /* Used by MIPS ELF find_nearest_line entry point. The structure | |
1037 | could be included directly in this one, but there's no point to | |
1038 | wasting the memory just for the infrequently called | |
1039 | find_nearest_line. */ | |
1040 | struct mips_elf_find_line *find_line_info; | |
1041 | ||
1042 | /* A place to stash dwarf1 info for this bfd. */ | |
1043 | struct dwarf1_debug *dwarf1_find_line_info; | |
1044 | ||
1045 | /* A place to stash dwarf2 info for this bfd. */ | |
1046 | PTR dwarf2_find_line_info; | |
1047 | ||
1048 | /* An array of stub sections indexed by symbol number, used by the | |
1049 | MIPS ELF linker. FIXME: We should figure out some way to only | |
1050 | include this field for a MIPS ELF target. */ | |
1051 | asection **local_stubs; | |
1052 | ||
1053 | /* Used to determine if the e_flags field has been initialized */ | |
1054 | boolean flags_init; | |
1055 | ||
1056 | /* Used to determine if PT_GNU_EH_FRAME segment header should be | |
1057 | created. */ | |
1058 | boolean eh_frame_hdr; | |
1059 | ||
1060 | /* Number of symbol version definitions we are about to emit. */ | |
1061 | unsigned int cverdefs; | |
1062 | ||
1063 | /* Number of symbol version references we are about to emit. */ | |
1064 | unsigned int cverrefs; | |
1065 | ||
1066 | /* Symbol version definitions in external objects. */ | |
1067 | Elf_Internal_Verdef *verdef; | |
1068 | ||
1069 | /* Symbol version references to external objects. */ | |
1070 | Elf_Internal_Verneed *verref; | |
1071 | ||
1072 | /* Linker sections that we are interested in. */ | |
1073 | struct elf_linker_section *linker_section[ (int)LINKER_SECTION_MAX ]; | |
1074 | ||
1075 | /* The Irix 5 support uses two virtual sections, which represent | |
1076 | text/data symbols defined in dynamic objects. */ | |
1077 | asymbol *elf_data_symbol; | |
1078 | asymbol *elf_text_symbol; | |
1079 | asection *elf_data_section; | |
1080 | asection *elf_text_section; | |
1081 | }; | |
1082 | ||
1083 | #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) | |
1084 | #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header) | |
1085 | #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr) | |
1086 | #define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr) | |
1087 | #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section) | |
1088 | #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section) | |
1089 | #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section) | |
1090 | #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section) | |
1091 | #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section) | |
1092 | #define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals) | |
1093 | #define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals) | |
1094 | #define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms) | |
1095 | #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> num_section_syms) | |
1096 | #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo) | |
1097 | #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus) | |
1098 | #define elf_gp(bfd) (elf_tdata(bfd) -> gp) | |
1099 | #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size) | |
1100 | #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes) | |
1101 | #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts) | |
1102 | #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets) | |
1103 | #define elf_local_ptr_offsets(bfd) (elf_tdata(bfd) -> linker_section_pointers) | |
1104 | #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name) | |
1105 | #define elf_dt_soname(bfd) (elf_tdata(bfd) -> dt_soname) | |
1106 | #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab) | |
1107 | #define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init) | |
1108 | #define elf_linker_section(bfd,n) (elf_tdata(bfd) -> linker_section[(int)n]) | |
1109 | \f | |
1110 | extern void _bfd_elf_swap_verdef_in | |
1111 | PARAMS ((bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *)); | |
1112 | extern void _bfd_elf_swap_verdef_out | |
1113 | PARAMS ((bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *)); | |
1114 | extern void _bfd_elf_swap_verdaux_in | |
1115 | PARAMS ((bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *)); | |
1116 | extern void _bfd_elf_swap_verdaux_out | |
1117 | PARAMS ((bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *)); | |
1118 | extern void _bfd_elf_swap_verneed_in | |
1119 | PARAMS ((bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *)); | |
1120 | extern void _bfd_elf_swap_verneed_out | |
1121 | PARAMS ((bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *)); | |
1122 | extern void _bfd_elf_swap_vernaux_in | |
1123 | PARAMS ((bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *)); | |
1124 | extern void _bfd_elf_swap_vernaux_out | |
1125 | PARAMS ((bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *)); | |
1126 | extern void _bfd_elf_swap_versym_in | |
1127 | PARAMS ((bfd *, const Elf_External_Versym *, Elf_Internal_Versym *)); | |
1128 | extern void _bfd_elf_swap_versym_out | |
1129 | PARAMS ((bfd *, const Elf_Internal_Versym *, Elf_External_Versym *)); | |
1130 | ||
1131 | extern int _bfd_elf_section_from_bfd_section | |
1132 | PARAMS ((bfd *, asection *)); | |
1133 | extern char *bfd_elf_string_from_elf_section | |
1134 | PARAMS ((bfd *, unsigned, unsigned)); | |
1135 | extern char *bfd_elf_get_str_section | |
1136 | PARAMS ((bfd *, unsigned)); | |
1137 | ||
1138 | extern boolean _bfd_elf_print_private_bfd_data | |
1139 | PARAMS ((bfd *, PTR)); | |
1140 | extern void bfd_elf_print_symbol | |
1141 | PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type)); | |
1142 | ||
1143 | #define elf_string_from_elf_strtab(abfd, strindex) \ | |
1144 | bfd_elf_string_from_elf_section(abfd, elf_elfheader(abfd)->e_shstrndx, \ | |
1145 | strindex) | |
1146 | ||
1147 | #define bfd_elf32_print_symbol bfd_elf_print_symbol | |
1148 | #define bfd_elf64_print_symbol bfd_elf_print_symbol | |
1149 | ||
1150 | extern void _bfd_elf_sprintf_vma | |
1151 | PARAMS ((bfd *, char *, bfd_vma)); | |
1152 | extern void _bfd_elf_fprintf_vma | |
1153 | PARAMS ((bfd *, PTR, bfd_vma)); | |
1154 | ||
1155 | extern enum elf_reloc_type_class _bfd_elf_reloc_type_class | |
1156 | PARAMS ((const Elf_Internal_Rela *)); | |
1157 | extern bfd_vma _bfd_elf_rela_local_sym | |
1158 | PARAMS ((bfd *, Elf_Internal_Sym *, asection *, Elf_Internal_Rela *)); | |
1159 | extern bfd_vma _bfd_elf_rel_local_sym | |
1160 | PARAMS ((bfd *, Elf_Internal_Sym *, asection **, bfd_vma)); | |
1161 | extern bfd_vma _bfd_elf_section_offset | |
1162 | PARAMS ((bfd *, struct bfd_link_info *, asection *, bfd_vma)); | |
1163 | ||
1164 | extern unsigned long bfd_elf_hash | |
1165 | PARAMS ((const char *)); | |
1166 | ||
1167 | extern bfd_reloc_status_type bfd_elf_generic_reloc | |
1168 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
1169 | extern boolean bfd_elf_mkobject | |
1170 | PARAMS ((bfd *)); | |
1171 | extern boolean bfd_elf_mkcorefile | |
1172 | PARAMS ((bfd *)); | |
1173 | extern Elf_Internal_Shdr *bfd_elf_find_section | |
1174 | PARAMS ((bfd *, char *)); | |
1175 | extern boolean _bfd_elf_make_section_from_shdr | |
1176 | PARAMS ((bfd *, Elf_Internal_Shdr *, const char *)); | |
1177 | extern boolean _bfd_elf_make_section_from_phdr | |
1178 | PARAMS ((bfd *, Elf_Internal_Phdr *, int, const char *)); | |
1179 | extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc | |
1180 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
1181 | extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create | |
1182 | PARAMS ((bfd *)); | |
1183 | extern void _bfd_elf_link_hash_copy_indirect | |
1184 | PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *)); | |
1185 | extern void _bfd_elf_link_hash_hide_symbol | |
1186 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
1187 | extern boolean _bfd_elf_link_hash_table_init | |
1188 | PARAMS ((struct elf_link_hash_table *, bfd *, | |
1189 | struct bfd_hash_entry *(*) (struct bfd_hash_entry *, | |
1190 | struct bfd_hash_table *, | |
1191 | const char *))); | |
1192 | extern boolean _bfd_elf_slurp_version_tables | |
1193 | PARAMS ((bfd *)); | |
1194 | ||
1195 | extern boolean _bfd_elf_merge_sections | |
1196 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1197 | ||
1198 | extern boolean _bfd_elf_copy_private_symbol_data | |
1199 | PARAMS ((bfd *, asymbol *, bfd *, asymbol *)); | |
1200 | extern boolean _bfd_elf_copy_private_section_data | |
1201 | PARAMS ((bfd *, asection *, bfd *, asection *)); | |
1202 | extern boolean _bfd_elf_write_object_contents | |
1203 | PARAMS ((bfd *)); | |
1204 | extern boolean _bfd_elf_write_corefile_contents | |
1205 | PARAMS ((bfd *)); | |
1206 | extern boolean _bfd_elf_set_section_contents | |
1207 | PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type)); | |
1208 | extern long _bfd_elf_get_symtab_upper_bound | |
1209 | PARAMS ((bfd *)); | |
1210 | extern long _bfd_elf_get_symtab | |
1211 | PARAMS ((bfd *, asymbol **)); | |
1212 | extern long _bfd_elf_get_dynamic_symtab_upper_bound | |
1213 | PARAMS ((bfd *)); | |
1214 | extern long _bfd_elf_canonicalize_dynamic_symtab | |
1215 | PARAMS ((bfd *, asymbol **)); | |
1216 | extern long _bfd_elf_get_reloc_upper_bound | |
1217 | PARAMS ((bfd *, sec_ptr)); | |
1218 | extern long _bfd_elf_canonicalize_reloc | |
1219 | PARAMS ((bfd *, sec_ptr, arelent **, asymbol **)); | |
1220 | extern long _bfd_elf_get_dynamic_reloc_upper_bound | |
1221 | PARAMS ((bfd *)); | |
1222 | extern long _bfd_elf_canonicalize_dynamic_reloc | |
1223 | PARAMS ((bfd *, arelent **, asymbol **)); | |
1224 | extern asymbol *_bfd_elf_make_empty_symbol | |
1225 | PARAMS ((bfd *)); | |
1226 | extern void _bfd_elf_get_symbol_info | |
1227 | PARAMS ((bfd *, asymbol *, symbol_info *)); | |
1228 | extern boolean _bfd_elf_is_local_label_name | |
1229 | PARAMS ((bfd *, const char *)); | |
1230 | extern alent *_bfd_elf_get_lineno | |
1231 | PARAMS ((bfd *, asymbol *)); | |
1232 | extern boolean _bfd_elf_set_arch_mach | |
1233 | PARAMS ((bfd *, enum bfd_architecture, unsigned long)); | |
1234 | extern boolean _bfd_elf_find_nearest_line | |
1235 | PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **, | |
1236 | const char **, unsigned int *)); | |
1237 | #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols | |
1238 | #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol | |
1239 | extern int _bfd_elf_sizeof_headers | |
1240 | PARAMS ((bfd *, boolean)); | |
1241 | extern boolean _bfd_elf_new_section_hook | |
1242 | PARAMS ((bfd *, asection *)); | |
1243 | extern boolean _bfd_elf_init_reloc_shdr | |
1244 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *, boolean)); | |
1245 | ||
1246 | /* If the target doesn't have reloc handling written yet: */ | |
1247 | extern void _bfd_elf_no_info_to_howto | |
1248 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); | |
1249 | ||
1250 | extern boolean bfd_section_from_shdr | |
1251 | PARAMS ((bfd *, unsigned int shindex)); | |
1252 | extern boolean bfd_section_from_phdr | |
1253 | PARAMS ((bfd *, Elf_Internal_Phdr *, int)); | |
1254 | ||
1255 | extern int _bfd_elf_symbol_from_bfd_symbol | |
1256 | PARAMS ((bfd *, asymbol **)); | |
1257 | ||
1258 | extern asection *bfd_section_from_r_symndx | |
1259 | PARAMS ((bfd *, struct sym_sec_cache *, asection *, unsigned long)); | |
1260 | extern asection *bfd_section_from_elf_index | |
1261 | PARAMS ((bfd *, unsigned int)); | |
1262 | extern boolean _bfd_elf_create_dynamic_sections | |
1263 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1264 | extern struct bfd_strtab_hash *_bfd_elf_stringtab_init | |
1265 | PARAMS ((void)); | |
1266 | ||
1267 | extern struct elf_strtab_hash * _bfd_elf_strtab_init | |
1268 | PARAMS ((void)); | |
1269 | extern void _bfd_elf_strtab_free | |
1270 | PARAMS ((struct elf_strtab_hash *)); | |
1271 | extern bfd_size_type _bfd_elf_strtab_add | |
1272 | PARAMS ((struct elf_strtab_hash *, const char *, boolean)); | |
1273 | extern void _bfd_elf_strtab_addref | |
1274 | PARAMS ((struct elf_strtab_hash *, bfd_size_type)); | |
1275 | extern void _bfd_elf_strtab_delref | |
1276 | PARAMS ((struct elf_strtab_hash *, bfd_size_type)); | |
1277 | extern void _bfd_elf_strtab_clear_all_refs | |
1278 | PARAMS ((struct elf_strtab_hash *)); | |
1279 | extern bfd_size_type _bfd_elf_strtab_size | |
1280 | PARAMS ((struct elf_strtab_hash *)); | |
1281 | extern bfd_size_type _bfd_elf_strtab_offset | |
1282 | PARAMS ((struct elf_strtab_hash *, bfd_size_type)); | |
1283 | extern boolean _bfd_elf_strtab_emit | |
1284 | PARAMS ((bfd *, struct elf_strtab_hash *)); | |
1285 | extern void _bfd_elf_strtab_finalize | |
1286 | PARAMS ((struct elf_strtab_hash *)); | |
1287 | ||
1288 | extern boolean _bfd_elf_discard_section_eh_frame | |
1289 | PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *, | |
1290 | boolean (*) (bfd_vma, PTR), struct elf_reloc_cookie *)); | |
1291 | extern boolean _bfd_elf_discard_section_eh_frame_hdr | |
1292 | PARAMS ((bfd *, struct bfd_link_info *, asection *)); | |
1293 | extern bfd_vma _bfd_elf_eh_frame_section_offset | |
1294 | PARAMS ((bfd *, asection *, bfd_vma)); | |
1295 | extern boolean _bfd_elf_write_section_eh_frame | |
1296 | PARAMS ((bfd *, asection *, asection *, bfd_byte *)); | |
1297 | extern boolean _bfd_elf_write_section_eh_frame_hdr | |
1298 | PARAMS ((bfd *, asection *)); | |
1299 | extern boolean _bfd_elf_maybe_strip_eh_frame_hdr | |
1300 | PARAMS ((struct bfd_link_info *)); | |
1301 | ||
1302 | extern boolean _bfd_elf_link_record_dynamic_symbol | |
1303 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
1304 | extern long _bfd_elf_link_lookup_local_dynindx | |
1305 | PARAMS ((struct bfd_link_info *, bfd *, long)); | |
1306 | extern boolean _bfd_elf_compute_section_file_positions | |
1307 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1308 | extern void _bfd_elf_assign_file_positions_for_relocs | |
1309 | PARAMS ((bfd *)); | |
1310 | extern file_ptr _bfd_elf_assign_file_position_for_section | |
1311 | PARAMS ((Elf_Internal_Shdr *, file_ptr, boolean)); | |
1312 | ||
1313 | extern boolean _bfd_elf_validate_reloc | |
1314 | PARAMS ((bfd *, arelent *)); | |
1315 | ||
1316 | extern boolean _bfd_elf_create_dynamic_sections | |
1317 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1318 | extern boolean _bfd_elf_create_got_section | |
1319 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1320 | extern unsigned long _bfd_elf_link_renumber_dynsyms | |
1321 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1322 | ||
1323 | extern boolean _bfd_elfcore_make_pseudosection | |
1324 | PARAMS ((bfd *, char *, size_t, ufile_ptr)); | |
1325 | extern char *_bfd_elfcore_strndup | |
1326 | PARAMS ((bfd *, char *, size_t)); | |
1327 | ||
1328 | extern elf_linker_section_t *_bfd_elf_create_linker_section | |
1329 | PARAMS ((bfd *, struct bfd_link_info *, enum elf_linker_section_enum, | |
1330 | elf_linker_section_t *)); | |
1331 | ||
1332 | extern elf_linker_section_pointers_t *_bfd_elf_find_pointer_linker_section | |
1333 | PARAMS ((elf_linker_section_pointers_t *, bfd_vma, | |
1334 | elf_linker_section_enum_t)); | |
1335 | ||
1336 | extern boolean bfd_elf32_create_pointer_linker_section | |
1337 | PARAMS ((bfd *, struct bfd_link_info *, elf_linker_section_t *, | |
1338 | struct elf_link_hash_entry *, const Elf32_Internal_Rela *)); | |
1339 | ||
1340 | extern bfd_vma bfd_elf32_finish_pointer_linker_section | |
1341 | PARAMS ((bfd *, bfd *, struct bfd_link_info *, elf_linker_section_t *, | |
1342 | struct elf_link_hash_entry *, bfd_vma, | |
1343 | const Elf32_Internal_Rela *, int)); | |
1344 | ||
1345 | extern boolean bfd_elf64_create_pointer_linker_section | |
1346 | PARAMS ((bfd *, struct bfd_link_info *, elf_linker_section_t *, | |
1347 | struct elf_link_hash_entry *, const Elf64_Internal_Rela *)); | |
1348 | ||
1349 | extern bfd_vma bfd_elf64_finish_pointer_linker_section | |
1350 | PARAMS ((bfd *, bfd *, struct bfd_link_info *, elf_linker_section_t *, | |
1351 | struct elf_link_hash_entry *, bfd_vma, | |
1352 | const Elf64_Internal_Rela *, int)); | |
1353 | ||
1354 | extern boolean _bfd_elf_make_linker_section_rela | |
1355 | PARAMS ((bfd *, elf_linker_section_t *, int)); | |
1356 | ||
1357 | extern const bfd_target *bfd_elf32_object_p | |
1358 | PARAMS ((bfd *)); | |
1359 | extern const bfd_target *bfd_elf32_core_file_p | |
1360 | PARAMS ((bfd *)); | |
1361 | extern char *bfd_elf32_core_file_failing_command | |
1362 | PARAMS ((bfd *)); | |
1363 | extern int bfd_elf32_core_file_failing_signal | |
1364 | PARAMS ((bfd *)); | |
1365 | extern boolean bfd_elf32_core_file_matches_executable_p | |
1366 | PARAMS ((bfd *, bfd *)); | |
1367 | ||
1368 | extern boolean bfd_elf32_bfd_link_add_symbols | |
1369 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1370 | extern boolean bfd_elf32_bfd_final_link | |
1371 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1372 | ||
1373 | extern void bfd_elf32_swap_symbol_in | |
1374 | PARAMS ((bfd *, const Elf32_External_Sym *, Elf_Internal_Sym *)); | |
1375 | extern void bfd_elf32_swap_symbol_out | |
1376 | PARAMS ((bfd *, const Elf_Internal_Sym *, PTR)); | |
1377 | extern void bfd_elf32_swap_reloc_in | |
1378 | PARAMS ((bfd *, const Elf32_External_Rel *, Elf_Internal_Rel *)); | |
1379 | extern void bfd_elf32_swap_reloc_out | |
1380 | PARAMS ((bfd *, const Elf_Internal_Rel *, Elf32_External_Rel *)); | |
1381 | extern void bfd_elf32_swap_reloca_in | |
1382 | PARAMS ((bfd *, const Elf32_External_Rela *, Elf_Internal_Rela *)); | |
1383 | extern void bfd_elf32_swap_reloca_out | |
1384 | PARAMS ((bfd *, const Elf_Internal_Rela *, Elf32_External_Rela *)); | |
1385 | extern void bfd_elf32_swap_phdr_in | |
1386 | PARAMS ((bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *)); | |
1387 | extern void bfd_elf32_swap_phdr_out | |
1388 | PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *)); | |
1389 | extern void bfd_elf32_swap_dyn_in | |
1390 | PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); | |
1391 | extern void bfd_elf32_swap_dyn_out | |
1392 | PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR)); | |
1393 | extern long bfd_elf32_slurp_symbol_table | |
1394 | PARAMS ((bfd *, asymbol **, boolean)); | |
1395 | extern boolean bfd_elf32_write_shdrs_and_ehdr | |
1396 | PARAMS ((bfd *)); | |
1397 | extern int bfd_elf32_write_out_phdrs | |
1398 | PARAMS ((bfd *, const Elf_Internal_Phdr *, unsigned int)); | |
1399 | extern void bfd_elf32_write_relocs | |
1400 | PARAMS ((bfd *, asection *, PTR)); | |
1401 | extern boolean bfd_elf32_slurp_reloc_table | |
1402 | PARAMS ((bfd *, asection *, asymbol **, boolean)); | |
1403 | extern boolean bfd_elf32_add_dynamic_entry | |
1404 | PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma)); | |
1405 | extern boolean bfd_elf32_link_create_dynamic_sections | |
1406 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1407 | extern Elf_Internal_Rela *_bfd_elf32_link_read_relocs | |
1408 | PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean)); | |
1409 | ||
1410 | extern const bfd_target *bfd_elf64_object_p | |
1411 | PARAMS ((bfd *)); | |
1412 | extern const bfd_target *bfd_elf64_core_file_p | |
1413 | PARAMS ((bfd *)); | |
1414 | extern char *bfd_elf64_core_file_failing_command | |
1415 | PARAMS ((bfd *)); | |
1416 | extern int bfd_elf64_core_file_failing_signal | |
1417 | PARAMS ((bfd *)); | |
1418 | extern boolean bfd_elf64_core_file_matches_executable_p | |
1419 | PARAMS ((bfd *, bfd *)); | |
1420 | extern boolean bfd_elf64_bfd_link_add_symbols | |
1421 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1422 | extern boolean bfd_elf64_bfd_final_link | |
1423 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1424 | ||
1425 | extern void bfd_elf64_swap_symbol_in | |
1426 | PARAMS ((bfd *, const Elf64_External_Sym *, Elf_Internal_Sym *)); | |
1427 | extern void bfd_elf64_swap_symbol_out | |
1428 | PARAMS ((bfd *, const Elf_Internal_Sym *, PTR)); | |
1429 | extern void bfd_elf64_swap_reloc_in | |
1430 | PARAMS ((bfd *, const Elf64_External_Rel *, Elf_Internal_Rel *)); | |
1431 | extern void bfd_elf64_swap_reloc_out | |
1432 | PARAMS ((bfd *, const Elf_Internal_Rel *, Elf64_External_Rel *)); | |
1433 | extern void bfd_elf64_swap_reloca_in | |
1434 | PARAMS ((bfd *, const Elf64_External_Rela *, Elf_Internal_Rela *)); | |
1435 | extern void bfd_elf64_swap_reloca_out | |
1436 | PARAMS ((bfd *, const Elf_Internal_Rela *, Elf64_External_Rela *)); | |
1437 | extern void bfd_elf64_swap_phdr_in | |
1438 | PARAMS ((bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *)); | |
1439 | extern void bfd_elf64_swap_phdr_out | |
1440 | PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *)); | |
1441 | extern void bfd_elf64_swap_dyn_in | |
1442 | PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); | |
1443 | extern void bfd_elf64_swap_dyn_out | |
1444 | PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR)); | |
1445 | extern long bfd_elf64_slurp_symbol_table | |
1446 | PARAMS ((bfd *, asymbol **, boolean)); | |
1447 | extern boolean bfd_elf64_write_shdrs_and_ehdr | |
1448 | PARAMS ((bfd *)); | |
1449 | extern int bfd_elf64_write_out_phdrs | |
1450 | PARAMS ((bfd *, const Elf_Internal_Phdr *, unsigned int)); | |
1451 | extern void bfd_elf64_write_relocs | |
1452 | PARAMS ((bfd *, asection *, PTR)); | |
1453 | extern boolean bfd_elf64_slurp_reloc_table | |
1454 | PARAMS ((bfd *, asection *, asymbol **, boolean)); | |
1455 | extern boolean bfd_elf64_add_dynamic_entry | |
1456 | PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma)); | |
1457 | extern boolean bfd_elf64_link_create_dynamic_sections | |
1458 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1459 | extern Elf_Internal_Rela *_bfd_elf64_link_read_relocs | |
1460 | PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean)); | |
1461 | ||
1462 | #define bfd_elf32_link_record_dynamic_symbol \ | |
1463 | _bfd_elf_link_record_dynamic_symbol | |
1464 | #define bfd_elf64_link_record_dynamic_symbol \ | |
1465 | _bfd_elf_link_record_dynamic_symbol | |
1466 | ||
1467 | extern boolean _bfd_elf32_link_record_local_dynamic_symbol | |
1468 | PARAMS ((struct bfd_link_info *, bfd *, long)); | |
1469 | extern boolean _bfd_elf64_link_record_local_dynamic_symbol | |
1470 | PARAMS ((struct bfd_link_info *, bfd *, long)); | |
1471 | ||
1472 | extern boolean _bfd_elf_close_and_cleanup | |
1473 | PARAMS ((bfd *)); | |
1474 | extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn | |
1475 | PARAMS ((bfd *, arelent *, struct symbol_cache_entry *, PTR, | |
1476 | asection *, bfd *, char **)); | |
1477 | ||
1478 | extern boolean _bfd_elf32_gc_sections | |
1479 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1480 | extern boolean _bfd_elf32_gc_common_finalize_got_offsets | |
1481 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1482 | extern boolean _bfd_elf32_gc_common_final_link | |
1483 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1484 | extern boolean _bfd_elf32_gc_record_vtinherit | |
1485 | PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma)); | |
1486 | extern boolean _bfd_elf32_gc_record_vtentry | |
1487 | PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma)); | |
1488 | ||
1489 | extern boolean _bfd_elf64_gc_sections | |
1490 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1491 | extern boolean _bfd_elf64_gc_common_finalize_got_offsets | |
1492 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1493 | extern boolean _bfd_elf64_gc_common_final_link | |
1494 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1495 | extern boolean _bfd_elf64_gc_record_vtinherit | |
1496 | PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma)); | |
1497 | extern boolean _bfd_elf64_gc_record_vtentry | |
1498 | PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma)); | |
1499 | ||
1500 | extern boolean _bfd_elf32_reloc_symbol_deleted_p | |
1501 | PARAMS ((bfd_vma, PTR)); | |
1502 | extern boolean _bfd_elf64_reloc_symbol_deleted_p | |
1503 | PARAMS ((bfd_vma, PTR)); | |
1504 | ||
1505 | /* MIPS ELF specific routines. */ | |
1506 | ||
1507 | extern boolean _bfd_mips_elf_object_p | |
1508 | PARAMS ((bfd *)); | |
1509 | extern boolean _bfd_mips_elf_section_from_shdr | |
1510 | PARAMS ((bfd *, Elf_Internal_Shdr *, char *)); | |
1511 | extern boolean _bfd_mips_elf_fake_sections | |
1512 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); | |
1513 | extern boolean _bfd_mips_elf_section_from_bfd_section | |
1514 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *, int *)); | |
1515 | extern boolean _bfd_mips_elf_section_processing | |
1516 | PARAMS ((bfd *, Elf_Internal_Shdr *)); | |
1517 | extern void _bfd_mips_elf_symbol_processing | |
1518 | PARAMS ((bfd *, asymbol *)); | |
1519 | extern boolean _bfd_mips_elf_read_ecoff_info | |
1520 | PARAMS ((bfd *, asection *, struct ecoff_debug_info *)); | |
1521 | extern void _bfd_mips_elf_final_write_processing | |
1522 | PARAMS ((bfd *, boolean)); | |
1523 | extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc | |
1524 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
1525 | extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc | |
1526 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
1527 | extern bfd_reloc_status_type _bfd_mips_elf_gprel16_reloc | |
1528 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
1529 | extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc | |
1530 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
1531 | extern bfd_reloc_status_type _bfd_mips_elf_gprel32_reloc | |
1532 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
1533 | extern boolean _bfd_mips_elf_set_private_flags | |
1534 | PARAMS ((bfd *, flagword)); | |
1535 | extern boolean _bfd_mips_elf_copy_private_bfd_data | |
1536 | PARAMS ((bfd *, bfd *)); | |
1537 | extern boolean _bfd_mips_elf_merge_private_bfd_data | |
1538 | PARAMS ((bfd *, bfd *)); | |
1539 | extern boolean _bfd_mips_elf_find_nearest_line | |
1540 | PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **, | |
1541 | const char **, unsigned int *)); | |
1542 | extern boolean _bfd_mips_elf_set_section_contents | |
1543 | PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type)); | |
1544 | extern boolean _bfd_mips_elf_create_dynamic_sections | |
1545 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1546 | extern boolean _bfd_mips_elf_add_symbol_hook | |
1547 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
1548 | const char **, flagword *, asection **, bfd_vma *)); | |
1549 | extern boolean _bfd_mips_elf_adjust_dynamic_symbol | |
1550 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
1551 | extern boolean _bfd_mips_elf_finish_dynamic_symbol | |
1552 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
1553 | Elf_Internal_Sym *)); | |
1554 | extern boolean _bfd_mips_elf_finish_dynamic_sections | |
1555 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1556 | extern asection * _bfd_mips_elf_gc_mark_hook | |
1557 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, | |
1558 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
1559 | extern boolean _bfd_mips_elf_gc_sweep_hook | |
1560 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
1561 | const Elf_Internal_Rela *)); | |
1562 | extern boolean _bfd_mips_elf_always_size_sections | |
1563 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1564 | extern boolean _bfd_mips_elf_size_dynamic_sections | |
1565 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1566 | extern boolean _bfd_mips_elf_check_relocs | |
1567 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
1568 | const Elf_Internal_Rela *)); | |
1569 | extern struct bfd_link_hash_table *_bfd_mips_elf_link_hash_table_create | |
1570 | PARAMS ((bfd *)); | |
1571 | extern boolean _bfd_mips_elf_print_private_bfd_data | |
1572 | PARAMS ((bfd *, PTR)); | |
1573 | extern boolean _bfd_mips_elf_link_output_symbol_hook | |
1574 | PARAMS ((bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *, | |
1575 | asection *)); | |
1576 | extern boolean _bfd_mips_elf_final_link | |
1577 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1578 | extern int _bfd_mips_elf_additional_program_headers | |
1579 | PARAMS ((bfd *)); | |
1580 | extern boolean _bfd_mips_elf_modify_segment_map | |
1581 | PARAMS ((bfd *)); | |
1582 | extern boolean _bfd_mips_elf_relocate_section | |
1583 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
1584 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
1585 | ||
1586 | /* SH ELF specific routine. */ | |
1587 | ||
1588 | extern boolean _sh_elf_set_mach_from_flags | |
1589 | PARAMS ((bfd *)); | |
1590 | ||
1591 | #endif /* _LIBELF_H_ */ |