Commit | Line | Data |
---|---|---|
252b5132 RH |
1 | /* BFD back-end data structures for ELF files. |
2 | Copyright (C) 1992, 93, 94, 95, 96, 97, 1998 Free Software Foundation, Inc. | |
3 | Written by Cygnus Support. | |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
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 | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
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. | |
16 | ||
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 | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #ifndef _LIBELF_H_ | |
22 | #define _LIBELF_H_ 1 | |
23 | ||
24 | #include "elf/common.h" | |
25 | #include "elf/internal.h" | |
26 | #include "elf/external.h" | |
27 | #include "bfdlink.h" | |
28 | ||
29 | /* If size isn't specified as 64 or 32, NAME macro should fail. */ | |
30 | #ifndef NAME | |
31 | #if ARCH_SIZE==64 | |
32 | #define NAME(x,y) CAT4(x,64,_,y) | |
33 | #endif | |
34 | #if ARCH_SIZE==32 | |
35 | #define NAME(x,y) CAT4(x,32,_,y) | |
36 | #endif | |
37 | #endif | |
38 | ||
39 | #ifndef NAME | |
40 | #define NAME(x,y) CAT4(x,NOSIZE,_,y) | |
41 | #endif | |
42 | ||
43 | #define ElfNAME(X) NAME(Elf,X) | |
44 | #define elfNAME(X) NAME(elf,X) | |
45 | ||
46 | /* Information held for an ELF symbol. The first field is the | |
47 | corresponding asymbol. Every symbol is an ELF file is actually a | |
48 | pointer to this structure, although it is often handled as a | |
49 | pointer to an asymbol. */ | |
50 | ||
51 | typedef struct | |
52 | { | |
53 | /* The BFD symbol. */ | |
54 | asymbol symbol; | |
55 | /* ELF symbol information. */ | |
56 | Elf_Internal_Sym internal_elf_sym; | |
57 | /* Backend specific information. */ | |
58 | union | |
59 | { | |
60 | unsigned int hppa_arg_reloc; | |
61 | PTR mips_extr; | |
62 | PTR any; | |
63 | } | |
64 | tc_data; | |
65 | ||
66 | /* Version information. This is from an Elf_Internal_Versym | |
67 | structure in a SHT_GNU_versym section. It is zero if there is no | |
68 | version information. */ | |
69 | unsigned short version; | |
70 | ||
71 | } elf_symbol_type; | |
72 | \f | |
73 | /* ELF linker hash table entries. */ | |
74 | ||
75 | struct elf_link_hash_entry | |
76 | { | |
77 | struct bfd_link_hash_entry root; | |
78 | ||
79 | /* Symbol index in output file. This is initialized to -1. It is | |
80 | set to -2 if the symbol is used by a reloc. */ | |
81 | long indx; | |
82 | ||
83 | /* Symbol size. */ | |
84 | bfd_size_type size; | |
85 | ||
86 | /* Symbol index as a dynamic symbol. Initialized to -1, and remains | |
87 | -1 if this is not a dynamic symbol. */ | |
88 | long dynindx; | |
89 | ||
90 | /* String table index in .dynstr if this is a dynamic symbol. */ | |
91 | unsigned long dynstr_index; | |
92 | ||
93 | /* If this is a weak defined symbol from a dynamic object, this | |
94 | field points to a defined symbol with the same value, if there is | |
95 | one. Otherwise it is NULL. */ | |
96 | struct elf_link_hash_entry *weakdef; | |
97 | ||
98 | /* If this symbol requires an entry in the global offset table, the | |
99 | processor specific backend uses this field to track usage and | |
100 | final offset. We use a union and two names primarily to document | |
101 | the intent of any particular piece of code. The field should be | |
102 | used as a count until size_dynamic_sections, at which point the | |
103 | contents of the .got is fixed. Afterward, if this field is -1, | |
104 | then the symbol does not require a global offset table entry. */ | |
105 | union | |
106 | { | |
107 | bfd_signed_vma refcount; | |
108 | bfd_vma offset; | |
109 | } got; | |
110 | ||
111 | /* Same, but tracks a procedure linkage table entry. */ | |
112 | union | |
113 | { | |
114 | bfd_signed_vma refcount; | |
115 | bfd_vma offset; | |
116 | } plt; | |
117 | ||
118 | /* If this symbol is used in the linker created sections, the processor | |
119 | specific backend uses this field to map the field into the offset | |
120 | from the beginning of the section. */ | |
121 | struct elf_linker_section_pointers *linker_section_pointer; | |
122 | ||
123 | /* Version information. */ | |
124 | union | |
125 | { | |
126 | /* This field is used for a symbol which is not defined in a | |
127 | regular object. It points to the version information read in | |
128 | from the dynamic object. */ | |
129 | Elf_Internal_Verdef *verdef; | |
130 | /* This field is used for a symbol which is defined in a regular | |
131 | object. It is set up in size_dynamic_sections. It points to | |
132 | the version information we should write out for this symbol. */ | |
133 | struct bfd_elf_version_tree *vertree; | |
134 | } verinfo; | |
135 | ||
136 | /* Virtual table entry use information. This array is nominally of size | |
137 | size/sizeof(target_void_pointer), though we have to be able to assume | |
138 | and track a size while the symbol is still undefined. It is indexed | |
139 | via offset/sizeof(target_void_pointer). */ | |
140 | size_t vtable_entries_size; | |
141 | boolean *vtable_entries_used; | |
142 | ||
143 | /* Virtual table derivation info. */ | |
144 | struct elf_link_hash_entry *vtable_parent; | |
145 | ||
146 | /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */ | |
147 | char type; | |
148 | ||
149 | /* Symbol st_other value. */ | |
150 | unsigned char other; | |
151 | ||
152 | /* Hash value of the name computed using the ELF hash function. */ | |
153 | unsigned long elf_hash_value; | |
154 | ||
155 | /* Some flags; legal values follow. */ | |
156 | unsigned short elf_link_hash_flags; | |
157 | /* Symbol is referenced by a non-shared object. */ | |
158 | #define ELF_LINK_HASH_REF_REGULAR 01 | |
159 | /* Symbol is defined by a non-shared object. */ | |
160 | #define ELF_LINK_HASH_DEF_REGULAR 02 | |
161 | /* Symbol is referenced by a shared object. */ | |
162 | #define ELF_LINK_HASH_REF_DYNAMIC 04 | |
163 | /* Symbol is defined by a shared object. */ | |
164 | #define ELF_LINK_HASH_DEF_DYNAMIC 010 | |
165 | /* Symbol has a non-weak reference from a non-shared object. */ | |
166 | #define ELF_LINK_HASH_REF_REGULAR_NONWEAK 020 | |
167 | /* Dynamic symbol has been adjustd. */ | |
168 | #define ELF_LINK_HASH_DYNAMIC_ADJUSTED 040 | |
169 | /* Symbol needs a copy reloc. */ | |
170 | #define ELF_LINK_HASH_NEEDS_COPY 0100 | |
171 | /* Symbol needs a procedure linkage table entry. */ | |
172 | #define ELF_LINK_HASH_NEEDS_PLT 0200 | |
173 | /* Symbol appears in a non-ELF input file. */ | |
174 | #define ELF_LINK_NON_ELF 0400 | |
175 | /* Symbol should be marked as hidden in the version information. */ | |
176 | #define ELF_LINK_HIDDEN 01000 | |
177 | /* Symbol was forced to local scope due to a version script file. */ | |
178 | #define ELF_LINK_FORCED_LOCAL 02000 | |
179 | /* Symbol was marked during garbage collection. */ | |
180 | #define ELF_LINK_HASH_MARK 04000 | |
181 | }; | |
182 | ||
183 | /* ELF linker hash table. */ | |
184 | ||
185 | struct elf_link_hash_table | |
186 | { | |
187 | struct bfd_link_hash_table root; | |
188 | /* Whether we have created the special dynamic sections required | |
189 | when linking against or generating a shared object. */ | |
190 | boolean dynamic_sections_created; | |
191 | /* The BFD used to hold special sections created by the linker. | |
192 | This will be the first BFD found which requires these sections to | |
193 | be created. */ | |
194 | bfd *dynobj; | |
195 | /* The number of symbols found in the link which must be put into | |
196 | the .dynsym section. */ | |
197 | bfd_size_type dynsymcount; | |
198 | /* The string table of dynamic symbols, which becomes the .dynstr | |
199 | section. */ | |
200 | struct bfd_strtab_hash *dynstr; | |
201 | /* The number of buckets in the hash table in the .hash section. | |
202 | This is based on the number of dynamic symbols. */ | |
203 | bfd_size_type bucketcount; | |
204 | /* A linked list of DT_NEEDED names found in dynamic objects | |
205 | included in the link. */ | |
206 | struct bfd_link_needed_list *needed; | |
207 | /* The _GLOBAL_OFFSET_TABLE_ symbol. */ | |
208 | struct elf_link_hash_entry *hgot; | |
209 | /* A pointer to information used to link stabs in sections. */ | |
210 | PTR stab_info; | |
211 | }; | |
212 | ||
213 | /* Look up an entry in an ELF linker hash table. */ | |
214 | ||
215 | #define elf_link_hash_lookup(table, string, create, copy, follow) \ | |
216 | ((struct elf_link_hash_entry *) \ | |
217 | bfd_link_hash_lookup (&(table)->root, (string), (create), \ | |
218 | (copy), (follow))) | |
219 | ||
220 | /* Traverse an ELF linker hash table. */ | |
221 | ||
222 | #define elf_link_hash_traverse(table, func, info) \ | |
223 | (bfd_link_hash_traverse \ | |
224 | (&(table)->root, \ | |
225 | (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \ | |
226 | (info))) | |
227 | ||
228 | /* Get the ELF linker hash table from a link_info structure. */ | |
229 | ||
230 | #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash)) | |
231 | \f | |
232 | /* Constant information held for an ELF backend. */ | |
233 | ||
234 | struct elf_size_info { | |
235 | unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr; | |
236 | unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note; | |
237 | ||
238 | unsigned char arch_size, file_align; | |
239 | unsigned char elfclass, ev_current; | |
240 | int (*write_out_phdrs) PARAMS ((bfd *, const Elf_Internal_Phdr *, int)); | |
241 | boolean (*write_shdrs_and_ehdr) PARAMS ((bfd *)); | |
242 | void (*write_relocs) PARAMS ((bfd *, asection *, PTR)); | |
243 | void (*swap_symbol_out) PARAMS ((bfd *, const Elf_Internal_Sym *, PTR)); | |
244 | boolean (*slurp_reloc_table) | |
245 | PARAMS ((bfd *, asection *, asymbol **, boolean)); | |
246 | long (*slurp_symbol_table) PARAMS ((bfd *, asymbol **, boolean)); | |
247 | void (*swap_dyn_in) PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); | |
248 | }; | |
249 | ||
250 | #define elf_symbol_from(ABFD,S) \ | |
251 | (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \ | |
252 | && (S)->the_bfd->tdata.elf_obj_data != 0) \ | |
253 | ? (elf_symbol_type *) (S) \ | |
254 | : 0) | |
255 | ||
256 | struct elf_backend_data | |
257 | { | |
258 | /* Whether the backend uses REL or RELA relocations. FIXME: some | |
259 | ELF backends use both. When we need to support one, this whole | |
260 | approach will need to be changed. */ | |
261 | int use_rela_p; | |
262 | ||
263 | /* The architecture for this backend. */ | |
264 | enum bfd_architecture arch; | |
265 | ||
266 | /* The ELF machine code (EM_xxxx) for this backend. */ | |
267 | int elf_machine_code; | |
268 | ||
269 | /* The maximum page size for this backend. */ | |
270 | bfd_vma maxpagesize; | |
271 | ||
272 | /* This is true if the linker should act like collect and gather | |
273 | global constructors and destructors by name. This is true for | |
274 | MIPS ELF because the Irix 5 tools can not handle the .init | |
275 | section. */ | |
276 | boolean collect; | |
277 | ||
278 | /* This is true if the linker should ignore changes to the type of a | |
279 | symbol. This is true for MIPS ELF because some Irix 5 objects | |
280 | record undefined functions as STT_OBJECT although the definitions | |
281 | are STT_FUNC. */ | |
282 | boolean type_change_ok; | |
283 | ||
284 | /* A function to translate an ELF RELA relocation to a BFD arelent | |
285 | structure. */ | |
286 | void (*elf_info_to_howto) PARAMS ((bfd *, arelent *, | |
287 | Elf_Internal_Rela *)); | |
288 | ||
289 | /* A function to translate an ELF REL relocation to a BFD arelent | |
290 | structure. */ | |
291 | void (*elf_info_to_howto_rel) PARAMS ((bfd *, arelent *, | |
292 | Elf_Internal_Rel *)); | |
293 | ||
294 | /* A function to determine whether a symbol is global when | |
295 | partitioning the symbol table into local and global symbols. | |
296 | This should be NULL for most targets, in which case the correct | |
297 | thing will be done. MIPS ELF, at least on the Irix 5, has | |
298 | special requirements. */ | |
299 | boolean (*elf_backend_sym_is_global) PARAMS ((bfd *, asymbol *)); | |
300 | ||
301 | /* The remaining functions are hooks which are called only if they | |
302 | are not NULL. */ | |
303 | ||
304 | /* A function to permit a backend specific check on whether a | |
305 | particular BFD format is relevant for an object file, and to | |
306 | permit the backend to set any global information it wishes. When | |
307 | this is called elf_elfheader is set, but anything else should be | |
308 | used with caution. If this returns false, the check_format | |
309 | routine will return a bfd_error_wrong_format error. */ | |
310 | boolean (*elf_backend_object_p) PARAMS ((bfd *)); | |
311 | ||
312 | /* A function to do additional symbol processing when reading the | |
313 | ELF symbol table. This is where any processor-specific special | |
314 | section indices are handled. */ | |
315 | void (*elf_backend_symbol_processing) PARAMS ((bfd *, asymbol *)); | |
316 | ||
317 | /* A function to do additional symbol processing after reading the | |
318 | entire ELF symbol table. */ | |
319 | boolean (*elf_backend_symbol_table_processing) PARAMS ((bfd *, | |
320 | elf_symbol_type *, | |
321 | unsigned int)); | |
322 | ||
323 | /* A function to set the type of the info field. Processor-specific | |
324 | types should be handled here. */ | |
325 | int (*elf_backend_get_symbol_type) PARAMS (( Elf_Internal_Sym *, int)); | |
326 | ||
327 | /* A function to do additional processing on the ELF section header | |
328 | just before writing it out. This is used to set the flags and | |
329 | type fields for some sections, or to actually write out data for | |
330 | unusual sections. */ | |
331 | boolean (*elf_backend_section_processing) PARAMS ((bfd *, | |
332 | Elf32_Internal_Shdr *)); | |
333 | ||
334 | /* A function to handle unusual section types when creating BFD | |
335 | sections from ELF sections. */ | |
336 | boolean (*elf_backend_section_from_shdr) PARAMS ((bfd *, | |
337 | Elf32_Internal_Shdr *, | |
338 | char *)); | |
339 | ||
340 | /* A function to set up the ELF section header for a BFD section in | |
341 | preparation for writing it out. This is where the flags and type | |
342 | fields are set for unusual sections. */ | |
343 | boolean (*elf_backend_fake_sections) PARAMS ((bfd *, Elf32_Internal_Shdr *, | |
344 | asection *)); | |
345 | ||
346 | /* A function to get the ELF section index for a BFD section. If | |
347 | this returns true, the section was found. If it is a normal ELF | |
348 | section, *RETVAL should be left unchanged. If it is not a normal | |
349 | ELF section *RETVAL should be set to the SHN_xxxx index. */ | |
350 | boolean (*elf_backend_section_from_bfd_section) | |
351 | PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *retval)); | |
352 | ||
353 | /* If this field is not NULL, it is called by the add_symbols phase | |
354 | of a link just before adding a symbol to the global linker hash | |
355 | table. It may modify any of the fields as it wishes. If *NAME | |
356 | is set to NULL, the symbol will be skipped rather than being | |
357 | added to the hash table. This function is responsible for | |
358 | handling all processor dependent symbol bindings and section | |
359 | indices, and must set at least *FLAGS and *SEC for each processor | |
360 | dependent case; failure to do so will cause a link error. */ | |
361 | boolean (*elf_add_symbol_hook) | |
362 | PARAMS ((bfd *abfd, struct bfd_link_info *info, | |
363 | const Elf_Internal_Sym *, const char **name, | |
364 | flagword *flags, asection **sec, bfd_vma *value)); | |
365 | ||
366 | /* If this field is not NULL, it is called by the elf_link_output_sym | |
367 | phase of a link for each symbol which will appear in the object file. */ | |
368 | boolean (*elf_backend_link_output_symbol_hook) | |
369 | PARAMS ((bfd *, struct bfd_link_info *info, const char *, | |
370 | Elf_Internal_Sym *, asection *)); | |
371 | ||
372 | /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend | |
373 | linker the first time it encounters a dynamic object in the link. | |
374 | This function must create any sections required for dynamic | |
375 | linking. The ABFD argument is a dynamic object. The .interp, | |
376 | .dynamic, .dynsym, .dynstr, and .hash functions have already been | |
377 | created, and this function may modify the section flags if | |
378 | desired. This function will normally create the .got and .plt | |
379 | sections, but different backends have different requirements. */ | |
380 | boolean (*elf_backend_create_dynamic_sections) | |
381 | PARAMS ((bfd *abfd, struct bfd_link_info *info)); | |
382 | ||
383 | /* The CHECK_RELOCS function is called by the add_symbols phase of | |
384 | the ELF backend linker. It is called once for each section with | |
385 | relocs of an object file, just after the symbols for the object | |
386 | file have been added to the global linker hash table. The | |
387 | function must look through the relocs and do any special handling | |
388 | required. This generally means allocating space in the global | |
389 | offset table, and perhaps allocating space for a reloc. The | |
390 | relocs are always passed as Rela structures; if the section | |
391 | actually uses Rel structures, the r_addend field will always be | |
392 | zero. */ | |
393 | boolean (*check_relocs) | |
394 | PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o, | |
395 | const Elf_Internal_Rela *relocs)); | |
396 | ||
397 | /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend | |
398 | linker for every symbol which is defined by a dynamic object and | |
399 | referenced by a regular object. This is called after all the | |
400 | input files have been seen, but before the SIZE_DYNAMIC_SECTIONS | |
401 | function has been called. The hash table entry should be | |
402 | bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be | |
403 | defined in a section from a dynamic object. Dynamic object | |
404 | sections are not included in the final link, and this function is | |
405 | responsible for changing the value to something which the rest of | |
406 | the link can deal with. This will normally involve adding an | |
407 | entry to the .plt or .got or some such section, and setting the | |
408 | symbol to point to that. */ | |
409 | boolean (*elf_backend_adjust_dynamic_symbol) | |
410 | PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h)); | |
411 | ||
412 | /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker | |
413 | after all the linker input files have been seen but before the | |
414 | section sizes have been set. This is called after | |
415 | ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */ | |
416 | boolean (*elf_backend_always_size_sections) | |
417 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); | |
418 | ||
419 | /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend | |
420 | linker after all the linker input files have been seen but before | |
421 | the sections sizes have been set. This is called after | |
422 | ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols. | |
423 | It is only called when linking against a dynamic object. It must | |
424 | set the sizes of the dynamic sections, and may fill in their | |
425 | contents as well. The generic ELF linker can handle the .dynsym, | |
426 | .dynstr and .hash sections. This function must handle the | |
427 | .interp section and any sections created by the | |
428 | CREATE_DYNAMIC_SECTIONS entry point. */ | |
429 | boolean (*elf_backend_size_dynamic_sections) | |
430 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); | |
431 | ||
432 | /* The RELOCATE_SECTION function is called by the ELF backend linker | |
433 | to handle the relocations for a section. | |
434 | ||
435 | The relocs are always passed as Rela structures; if the section | |
436 | actually uses Rel structures, the r_addend field will always be | |
437 | zero. | |
438 | ||
439 | This function is responsible for adjust the section contents as | |
440 | necessary, and (if using Rela relocs and generating a | |
441 | relocateable output file) adjusting the reloc addend as | |
442 | necessary. | |
443 | ||
444 | This function does not have to worry about setting the reloc | |
445 | address or the reloc symbol index. | |
446 | ||
447 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
448 | ||
449 | LOCAL_SECTIONS is an array giving the section in the input file | |
450 | corresponding to the st_shndx field of each local symbol. | |
451 | ||
452 | The global hash table entry for the global symbols can be found | |
453 | via elf_sym_hashes (input_bfd). | |
454 | ||
455 | When generating relocateable output, this function must handle | |
456 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
457 | going to be the section symbol corresponding to the output | |
458 | section, which means that the addend must be adjusted | |
459 | accordingly. */ | |
460 | boolean (*elf_backend_relocate_section) | |
461 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info, | |
462 | bfd *input_bfd, asection *input_section, bfd_byte *contents, | |
463 | Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms, | |
464 | asection **local_sections)); | |
465 | ||
466 | /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend | |
467 | linker just before it writes a symbol out to the .dynsym section. | |
468 | The processor backend may make any required adjustment to the | |
469 | symbol. It may also take the opportunity to set contents of the | |
470 | dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on | |
471 | all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called | |
472 | on those symbols which are defined by a dynamic object. */ | |
473 | boolean (*elf_backend_finish_dynamic_symbol) | |
474 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info, | |
475 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)); | |
476 | ||
477 | /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend | |
478 | linker just before it writes all the dynamic sections out to the | |
479 | output file. The FINISH_DYNAMIC_SYMBOL will have been called on | |
480 | all dynamic symbols. */ | |
481 | boolean (*elf_backend_finish_dynamic_sections) | |
482 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); | |
483 | ||
484 | /* A function to do any beginning processing needed for the ELF file | |
485 | before building the ELF headers and computing file positions. */ | |
486 | void (*elf_backend_begin_write_processing) | |
487 | PARAMS ((bfd *, struct bfd_link_info *)); | |
488 | ||
489 | /* A function to do any final processing needed for the ELF file | |
490 | before writing it out. The LINKER argument is true if this BFD | |
491 | was created by the ELF backend linker. */ | |
492 | void (*elf_backend_final_write_processing) | |
493 | PARAMS ((bfd *, boolean linker)); | |
494 | ||
495 | /* This function is called by get_program_header_size. It should | |
496 | return the number of additional program segments which this BFD | |
497 | will need. It should return -1 on error. */ | |
498 | int (*elf_backend_additional_program_headers) PARAMS ((bfd *)); | |
499 | ||
500 | /* This function is called to modify an existing segment map in a | |
501 | backend specific fashion. */ | |
502 | boolean (*elf_backend_modify_segment_map) PARAMS ((bfd *)); | |
503 | ||
504 | /* This function is called during section gc to discover the section a | |
505 | particular relocation refers to. It need not be defined for hosts | |
506 | that have no queer relocation types. */ | |
507 | asection * (*gc_mark_hook) | |
508 | PARAMS ((bfd *abfd, struct bfd_link_info *, Elf_Internal_Rela *, | |
509 | struct elf_link_hash_entry *h, Elf_Internal_Sym *)); | |
510 | ||
511 | /* This function, if defined, is called during the sweep phase of gc | |
512 | in order that a backend might update any data structures it might | |
513 | be maintaining. */ | |
514 | boolean (*gc_sweep_hook) | |
515 | PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o, | |
516 | const Elf_Internal_Rela *relocs)); | |
517 | ||
518 | /* The swapping table to use when dealing with ECOFF information. | |
519 | Used for the MIPS ELF .mdebug section. */ | |
520 | const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap; | |
521 | ||
522 | /* Alternate EM_xxxx machine codes for this backend. */ | |
523 | int elf_machine_alt1; | |
524 | int elf_machine_alt2; | |
525 | ||
526 | const struct elf_size_info *s; | |
527 | ||
528 | /* offset of the _GLOBAL_OFFSET_TABLE_ symbol from the start of the | |
529 | .got section */ | |
530 | bfd_vma got_symbol_offset; | |
531 | ||
532 | /* The size in bytes of the headers for the GOT and PLT. This includes | |
533 | the so-called reserved entries on some systems. */ | |
534 | bfd_vma got_header_size; | |
535 | bfd_vma plt_header_size; | |
536 | ||
537 | unsigned want_got_plt : 1; | |
538 | unsigned plt_readonly : 1; | |
539 | unsigned want_plt_sym : 1; | |
540 | unsigned plt_not_loaded : 1; | |
541 | unsigned plt_alignment : 4; | |
542 | unsigned can_gc_sections : 1; | |
543 | }; | |
544 | ||
545 | /* Information stored for each BFD section in an ELF file. This | |
546 | structure is allocated by elf_new_section_hook. */ | |
547 | ||
548 | struct bfd_elf_section_data | |
549 | { | |
550 | /* The ELF header for this section. */ | |
551 | Elf_Internal_Shdr this_hdr; | |
552 | /* The ELF header for the reloc section associated with this | |
553 | section, if any. */ | |
554 | Elf_Internal_Shdr rel_hdr; | |
555 | /* If there is a second reloc section associated with this section, | |
556 | as can happen on Irix 6, this field points to the header. */ | |
557 | Elf_Internal_Shdr *rel_hdr2; | |
558 | /* The ELF section number of this section. Only used for an output | |
559 | file. */ | |
560 | int this_idx; | |
561 | /* The ELF section number of the reloc section associated with this | |
562 | section, if any. Only used for an output file. */ | |
563 | int rel_idx; | |
564 | /* Used by the backend linker to store the symbol hash table entries | |
565 | associated with relocs against global symbols. */ | |
566 | struct elf_link_hash_entry **rel_hashes; | |
567 | /* A pointer to the swapped relocs. If the section uses REL relocs, | |
568 | rather than RELA, all the r_addend fields will be zero. This | |
569 | pointer may be NULL. It is used by the backend linker. */ | |
570 | Elf_Internal_Rela *relocs; | |
571 | /* Used by the backend linker when generating a shared library to | |
572 | record the dynamic symbol index for a section symbol | |
573 | corresponding to this section. */ | |
574 | long dynindx; | |
575 | /* A pointer used for .stab linking optimizations. */ | |
576 | PTR stab_info; | |
577 | /* A pointer available for the processor specific ELF backend. */ | |
578 | PTR tdata; | |
579 | }; | |
580 | ||
581 | #define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd) | |
582 | ||
583 | #define get_elf_backend_data(abfd) \ | |
584 | ((struct elf_backend_data *) (abfd)->xvec->backend_data) | |
585 | ||
586 | /* Enumeration to specify the special section. */ | |
587 | typedef enum elf_linker_section_enum | |
588 | { | |
589 | LINKER_SECTION_UNKNOWN, /* not used */ | |
590 | LINKER_SECTION_GOT, /* .got section for global offset pointers */ | |
591 | LINKER_SECTION_PLT, /* .plt section for generated procedure stubs */ | |
592 | LINKER_SECTION_SDATA, /* .sdata/.sbss section for PowerPC */ | |
593 | LINKER_SECTION_SDATA2, /* .sdata2/.sbss2 section for PowerPC */ | |
594 | LINKER_SECTION_MAX /* # of linker sections */ | |
595 | } elf_linker_section_enum_t; | |
596 | ||
597 | /* Sections created by the linker. */ | |
598 | ||
599 | typedef struct elf_linker_section | |
600 | { | |
601 | char *name; /* name of the section */ | |
602 | char *rel_name; /* name of the associated .rel{,a}. section */ | |
603 | char *bss_name; /* name of a related .bss section */ | |
604 | char *sym_name; /* name of symbol to reference this section */ | |
605 | asection *section; /* pointer to the section */ | |
606 | asection *bss_section; /* pointer to the bss section associated with this */ | |
607 | asection *rel_section; /* pointer to the relocations needed for this section */ | |
608 | struct elf_link_hash_entry *sym_hash; /* pointer to the created symbol hash value */ | |
609 | bfd_vma initial_size; /* initial size before any linker generated allocations */ | |
610 | bfd_vma sym_offset; /* offset of symbol from beginning of section */ | |
611 | bfd_vma hole_size; /* size of reserved address hole in allocation */ | |
612 | bfd_vma hole_offset; /* current offset for the hole */ | |
613 | bfd_vma max_hole_offset; /* maximum offset for the hole */ | |
614 | elf_linker_section_enum_t which; /* which section this is */ | |
615 | boolean hole_written_p; /* whether the hole has been initialized */ | |
616 | unsigned int alignment; /* alignment for the section */ | |
617 | flagword flags; /* flags to use to create the section */ | |
618 | } elf_linker_section_t; | |
619 | ||
620 | /* Linked list of allocated pointer entries. This hangs off of the symbol lists, and | |
621 | provides allows us to return different pointers, based on different addend's. */ | |
622 | ||
623 | typedef struct elf_linker_section_pointers | |
624 | { | |
625 | struct elf_linker_section_pointers *next; /* next allocated pointer for this symbol */ | |
626 | bfd_vma offset; /* offset of pointer from beginning of section */ | |
627 | bfd_signed_vma addend; /* addend used */ | |
628 | elf_linker_section_enum_t which; /* which linker section this is */ | |
629 | boolean written_address_p; /* whether address was written yet */ | |
630 | } elf_linker_section_pointers_t; | |
631 | ||
632 | /* Some private data is stashed away for future use using the tdata pointer | |
633 | in the bfd structure. */ | |
634 | ||
635 | struct elf_obj_tdata | |
636 | { | |
637 | Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */ | |
638 | Elf_Internal_Shdr **elf_sect_ptr; | |
639 | Elf_Internal_Phdr *phdr; | |
640 | struct elf_segment_map *segment_map; | |
641 | struct bfd_strtab_hash *strtab_ptr; | |
642 | int num_locals; | |
643 | int num_globals; | |
644 | asymbol **section_syms; /* STT_SECTION symbols for each section */ | |
645 | Elf_Internal_Shdr symtab_hdr; | |
646 | Elf_Internal_Shdr shstrtab_hdr; | |
647 | Elf_Internal_Shdr strtab_hdr; | |
648 | Elf_Internal_Shdr dynsymtab_hdr; | |
649 | Elf_Internal_Shdr dynstrtab_hdr; | |
650 | Elf_Internal_Shdr dynversym_hdr; | |
651 | Elf_Internal_Shdr dynverref_hdr; | |
652 | Elf_Internal_Shdr dynverdef_hdr; | |
653 | unsigned int symtab_section, shstrtab_section; | |
654 | unsigned int strtab_section, dynsymtab_section; | |
655 | unsigned int dynversym_section, dynverdef_section, dynverref_section; | |
656 | file_ptr next_file_pos; | |
657 | #if 0 | |
658 | /* we don't need these inside bfd anymore, and I think | |
659 | these weren't used outside bfd. */ | |
660 | void *prstatus; /* The raw /proc prstatus structure */ | |
661 | void *prpsinfo; /* The raw /proc prpsinfo structure */ | |
662 | #endif | |
663 | bfd_vma gp; /* The gp value (MIPS only, for now) */ | |
664 | unsigned int gp_size; /* The gp size (MIPS only, for now) */ | |
665 | ||
666 | /* Information grabbed from an elf core file. */ | |
667 | int core_signal; | |
668 | int core_pid; | |
669 | int core_lwpid; | |
670 | char* core_program; | |
671 | char* core_command; | |
672 | ||
673 | /* This is set to true if the object was created by the backend | |
674 | linker. */ | |
675 | boolean linker; | |
676 | ||
677 | /* A mapping from external symbols to entries in the linker hash | |
678 | table, used when linking. This is indexed by the symbol index | |
679 | minus the sh_info field of the symbol table header. */ | |
680 | struct elf_link_hash_entry **sym_hashes; | |
681 | ||
682 | /* A mapping from local symbols to offsets into the global offset | |
683 | table, used when linking. This is indexed by the symbol index. | |
684 | Like for the globals, we use a union and two names primarily to | |
685 | document the intent of any particular piece of code. The field | |
686 | should be used as a count until size_dynamic_sections, at which | |
687 | point the contents of the .got is fixed. Afterward, if an entry | |
688 | is -1, then the symbol does not require a global offset table entry. */ | |
689 | union | |
690 | { | |
691 | bfd_signed_vma *refcounts; | |
692 | bfd_vma *offsets; | |
693 | } local_got; | |
694 | ||
695 | /* A mapping from local symbols to offsets into the various linker | |
696 | sections added. This is index by the symbol index. */ | |
697 | elf_linker_section_pointers_t **linker_section_pointers; | |
698 | ||
699 | /* The linker ELF emulation code needs to let the backend ELF linker | |
700 | know what filename should be used for a dynamic object if the | |
701 | dynamic object is found using a search. The emulation code then | |
702 | sometimes needs to know what name was actually used. Until the | |
703 | file has been added to the linker symbol table, this field holds | |
704 | the name the linker wants. After it has been added, it holds the | |
705 | name actually used, which will be the DT_SONAME entry if there is | |
706 | one. */ | |
707 | const char *dt_name; | |
708 | ||
709 | /* Irix 5 often screws up the symbol table, sorting local symbols | |
710 | after global symbols. This flag is set if the symbol table in | |
711 | this BFD appears to be screwed up. If it is, we ignore the | |
712 | sh_info field in the symbol table header, and always read all the | |
713 | symbols. */ | |
714 | boolean bad_symtab; | |
715 | ||
716 | /* Records the result of `get_program_header_size'. */ | |
717 | bfd_size_type program_header_size; | |
718 | ||
719 | /* Used by find_nearest_line entry point. */ | |
720 | PTR line_info; | |
721 | ||
722 | /* Used by MIPS ELF find_nearest_line entry point. The structure | |
723 | could be included directly in this one, but there's no point to | |
724 | wasting the memory just for the infrequently called | |
725 | find_nearest_line. */ | |
726 | struct mips_elf_find_line *find_line_info; | |
727 | ||
728 | /* A place to stash dwarf1 info for this bfd. */ | |
729 | struct dwarf1_debug *dwarf1_find_line_info; | |
730 | ||
731 | /* A place to stash dwarf2 info for this bfd. */ | |
732 | struct dwarf2_debug *dwarf2_find_line_info; | |
733 | ||
734 | /* An array of stub sections indexed by symbol number, used by the | |
735 | MIPS ELF linker. FIXME: We should figure out some way to only | |
736 | include this field for a MIPS ELF target. */ | |
737 | asection **local_stubs; | |
738 | ||
739 | /* Used to determine if the e_flags field has been initialized */ | |
740 | boolean flags_init; | |
741 | ||
742 | /* Number of symbol version definitions we are about to emit. */ | |
743 | unsigned int cverdefs; | |
744 | ||
745 | /* Number of symbol version references we are about to emit. */ | |
746 | unsigned int cverrefs; | |
747 | ||
748 | /* Symbol version definitions in external objects. */ | |
749 | Elf_Internal_Verdef *verdef; | |
750 | ||
751 | /* Symbol version references to external objects. */ | |
752 | Elf_Internal_Verneed *verref; | |
753 | ||
754 | /* Linker sections that we are interested in. */ | |
755 | struct elf_linker_section *linker_section[ (int)LINKER_SECTION_MAX ]; | |
756 | }; | |
757 | ||
758 | #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) | |
759 | #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header) | |
760 | #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr) | |
761 | #define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr) | |
762 | #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section) | |
763 | #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section) | |
764 | #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section) | |
765 | #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section) | |
766 | #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section) | |
767 | #define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals) | |
768 | #define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals) | |
769 | #define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms) | |
770 | #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo) | |
771 | #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus) | |
772 | #define elf_gp(bfd) (elf_tdata(bfd) -> gp) | |
773 | #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size) | |
774 | #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes) | |
775 | #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts) | |
776 | #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets) | |
777 | #define elf_local_ptr_offsets(bfd) (elf_tdata(bfd) -> linker_section_pointers) | |
778 | #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name) | |
779 | #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab) | |
780 | #define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init) | |
781 | #define elf_linker_section(bfd,n) (elf_tdata(bfd) -> linker_section[(int)n]) | |
782 | \f | |
783 | extern void _bfd_elf_swap_verdef_in | |
784 | PARAMS ((bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *)); | |
785 | extern void _bfd_elf_swap_verdef_out | |
786 | PARAMS ((bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *)); | |
787 | extern void _bfd_elf_swap_verdaux_in | |
788 | PARAMS ((bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *)); | |
789 | extern void _bfd_elf_swap_verdaux_out | |
790 | PARAMS ((bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *)); | |
791 | extern void _bfd_elf_swap_verneed_in | |
792 | PARAMS ((bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *)); | |
793 | extern void _bfd_elf_swap_verneed_out | |
794 | PARAMS ((bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *)); | |
795 | extern void _bfd_elf_swap_vernaux_in | |
796 | PARAMS ((bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *)); | |
797 | extern void _bfd_elf_swap_vernaux_out | |
798 | PARAMS ((bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *)); | |
799 | extern void _bfd_elf_swap_versym_in | |
800 | PARAMS ((bfd *, const Elf_External_Versym *, Elf_Internal_Versym *)); | |
801 | extern void _bfd_elf_swap_versym_out | |
802 | PARAMS ((bfd *, const Elf_Internal_Versym *, Elf_External_Versym *)); | |
803 | ||
804 | extern int _bfd_elf_section_from_bfd_section PARAMS ((bfd *, asection *)); | |
805 | extern char *bfd_elf_string_from_elf_section | |
806 | PARAMS ((bfd *, unsigned, unsigned)); | |
807 | extern char *bfd_elf_get_str_section PARAMS ((bfd *, unsigned)); | |
808 | ||
809 | extern boolean _bfd_elf_print_private_bfd_data PARAMS ((bfd *, PTR)); | |
810 | extern void bfd_elf_print_symbol PARAMS ((bfd *, PTR, asymbol *, | |
811 | bfd_print_symbol_type)); | |
812 | #define elf_string_from_elf_strtab(abfd,strindex) \ | |
813 | bfd_elf_string_from_elf_section(abfd,elf_elfheader(abfd)->e_shstrndx,strindex) | |
814 | ||
815 | #define bfd_elf32_print_symbol bfd_elf_print_symbol | |
816 | #define bfd_elf64_print_symbol bfd_elf_print_symbol | |
817 | ||
818 | extern unsigned long bfd_elf_hash PARAMS ((CONST unsigned char *)); | |
819 | ||
820 | extern bfd_reloc_status_type bfd_elf_generic_reloc PARAMS ((bfd *, | |
821 | arelent *, | |
822 | asymbol *, | |
823 | PTR, | |
824 | asection *, | |
825 | bfd *, | |
826 | char **)); | |
827 | extern boolean bfd_elf_mkobject PARAMS ((bfd *)); | |
828 | extern boolean bfd_elf_mkcorefile PARAMS ((bfd *)); | |
829 | extern Elf_Internal_Shdr *bfd_elf_find_section PARAMS ((bfd *, char *)); | |
830 | extern boolean _bfd_elf_make_section_from_shdr | |
831 | PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, const char *name)); | |
832 | extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc | |
833 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
834 | extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create | |
835 | PARAMS ((bfd *)); | |
836 | extern boolean _bfd_elf_link_hash_table_init | |
837 | PARAMS ((struct elf_link_hash_table *, bfd *, | |
838 | struct bfd_hash_entry *(*) (struct bfd_hash_entry *, | |
839 | struct bfd_hash_table *, | |
840 | const char *))); | |
841 | extern boolean _bfd_elf_slurp_version_tables PARAMS ((bfd *)); | |
842 | ||
843 | extern boolean _bfd_elf_copy_private_symbol_data | |
844 | PARAMS ((bfd *, asymbol *, bfd *, asymbol *)); | |
845 | extern boolean _bfd_elf_copy_private_section_data | |
846 | PARAMS ((bfd *, asection *, bfd *, asection *)); | |
847 | extern boolean _bfd_elf_write_object_contents PARAMS ((bfd *)); | |
848 | extern boolean _bfd_elf_write_corefile_contents PARAMS ((bfd *)); | |
849 | extern boolean _bfd_elf_set_section_contents PARAMS ((bfd *, sec_ptr, PTR, | |
850 | file_ptr, | |
851 | bfd_size_type)); | |
852 | extern long _bfd_elf_get_symtab_upper_bound PARAMS ((bfd *)); | |
853 | extern long _bfd_elf_get_symtab PARAMS ((bfd *, asymbol **)); | |
854 | extern long _bfd_elf_get_dynamic_symtab_upper_bound PARAMS ((bfd *)); | |
855 | extern long _bfd_elf_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **)); | |
856 | extern long _bfd_elf_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr)); | |
857 | extern long _bfd_elf_canonicalize_reloc PARAMS ((bfd *, sec_ptr, | |
858 | arelent **, asymbol **)); | |
859 | extern long _bfd_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *)); | |
860 | extern long _bfd_elf_canonicalize_dynamic_reloc PARAMS ((bfd *, arelent **, | |
861 | asymbol **)); | |
862 | extern asymbol *_bfd_elf_make_empty_symbol PARAMS ((bfd *)); | |
863 | extern void _bfd_elf_get_symbol_info PARAMS ((bfd *, asymbol *, | |
864 | symbol_info *)); | |
865 | extern boolean _bfd_elf_is_local_label_name PARAMS ((bfd *, const char *)); | |
866 | extern alent *_bfd_elf_get_lineno PARAMS ((bfd *, asymbol *)); | |
867 | extern boolean _bfd_elf_set_arch_mach PARAMS ((bfd *, enum bfd_architecture, | |
868 | unsigned long)); | |
869 | extern boolean _bfd_elf_find_nearest_line PARAMS ((bfd *, asection *, | |
870 | asymbol **, | |
871 | bfd_vma, CONST char **, | |
872 | CONST char **, | |
873 | unsigned int *)); | |
874 | #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols | |
875 | #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol | |
876 | extern int _bfd_elf_sizeof_headers PARAMS ((bfd *, boolean)); | |
877 | extern boolean _bfd_elf_new_section_hook PARAMS ((bfd *, asection *)); | |
878 | ||
879 | /* If the target doesn't have reloc handling written yet: */ | |
880 | extern void _bfd_elf_no_info_to_howto PARAMS ((bfd *, arelent *, | |
881 | Elf_Internal_Rela *)); | |
882 | ||
883 | extern boolean bfd_section_from_shdr PARAMS ((bfd *, unsigned int shindex)); | |
884 | extern boolean bfd_section_from_phdr PARAMS ((bfd *, Elf_Internal_Phdr *, int)); | |
885 | ||
886 | extern int _bfd_elf_symbol_from_bfd_symbol PARAMS ((bfd *, asymbol **)); | |
887 | ||
888 | asection *bfd_section_from_elf_index PARAMS ((bfd *, unsigned int)); | |
889 | boolean _bfd_elf_create_dynamic_sections PARAMS ((bfd *, | |
890 | struct bfd_link_info *)); | |
891 | struct bfd_strtab_hash *_bfd_elf_stringtab_init PARAMS ((void)); | |
892 | boolean | |
893 | _bfd_elf_link_record_dynamic_symbol PARAMS ((struct bfd_link_info *, | |
894 | struct elf_link_hash_entry *)); | |
895 | boolean | |
896 | _bfd_elf_compute_section_file_positions PARAMS ((bfd *, | |
897 | struct bfd_link_info *)); | |
898 | void _bfd_elf_assign_file_positions_for_relocs PARAMS ((bfd *)); | |
899 | file_ptr _bfd_elf_assign_file_position_for_section PARAMS ((Elf_Internal_Shdr *, | |
900 | file_ptr, | |
901 | boolean)); | |
902 | ||
903 | extern boolean _bfd_elf_validate_reloc PARAMS ((bfd *, arelent *)); | |
904 | ||
905 | boolean _bfd_elf_create_dynamic_sections PARAMS ((bfd *, | |
906 | struct bfd_link_info *)); | |
907 | boolean _bfd_elf_create_got_section PARAMS ((bfd *, | |
908 | struct bfd_link_info *)); | |
909 | ||
910 | elf_linker_section_t *_bfd_elf_create_linker_section | |
911 | PARAMS ((bfd *abfd, | |
912 | struct bfd_link_info *info, | |
913 | enum elf_linker_section_enum, | |
914 | elf_linker_section_t *defaults)); | |
915 | ||
916 | elf_linker_section_pointers_t *_bfd_elf_find_pointer_linker_section | |
917 | PARAMS ((elf_linker_section_pointers_t *linker_pointers, | |
918 | bfd_signed_vma addend, | |
919 | elf_linker_section_enum_t which)); | |
920 | ||
921 | boolean bfd_elf32_create_pointer_linker_section | |
922 | PARAMS ((bfd *abfd, | |
923 | struct bfd_link_info *info, | |
924 | elf_linker_section_t *lsect, | |
925 | struct elf_link_hash_entry *h, | |
926 | const Elf32_Internal_Rela *rel)); | |
927 | ||
928 | bfd_vma bfd_elf32_finish_pointer_linker_section | |
929 | PARAMS ((bfd *output_abfd, | |
930 | bfd *input_bfd, | |
931 | struct bfd_link_info *info, | |
932 | elf_linker_section_t *lsect, | |
933 | struct elf_link_hash_entry *h, | |
934 | bfd_vma relocation, | |
935 | const Elf32_Internal_Rela *rel, | |
936 | int relative_reloc)); | |
937 | ||
938 | boolean bfd_elf64_create_pointer_linker_section | |
939 | PARAMS ((bfd *abfd, | |
940 | struct bfd_link_info *info, | |
941 | elf_linker_section_t *lsect, | |
942 | struct elf_link_hash_entry *h, | |
943 | const Elf64_Internal_Rela *rel)); | |
944 | ||
945 | bfd_vma bfd_elf64_finish_pointer_linker_section | |
946 | PARAMS ((bfd *output_abfd, | |
947 | bfd *input_bfd, | |
948 | struct bfd_link_info *info, | |
949 | elf_linker_section_t *lsect, | |
950 | struct elf_link_hash_entry *h, | |
951 | bfd_vma relocation, | |
952 | const Elf64_Internal_Rela *rel, | |
953 | int relative_reloc)); | |
954 | ||
955 | boolean _bfd_elf_make_linker_section_rela | |
956 | PARAMS ((bfd *dynobj, | |
957 | elf_linker_section_t *lsect, | |
958 | int alignment)); | |
959 | ||
960 | boolean _bfd_elfcore_section_from_phdr | |
961 | PARAMS ((bfd *, Elf_Internal_Phdr *, int)); | |
962 | ||
963 | extern const bfd_target *bfd_elf32_object_p PARAMS ((bfd *)); | |
964 | extern const bfd_target *bfd_elf32_core_file_p PARAMS ((bfd *)); | |
965 | extern char *bfd_elf32_core_file_failing_command PARAMS ((bfd *)); | |
966 | extern int bfd_elf32_core_file_failing_signal PARAMS ((bfd *)); | |
967 | extern boolean bfd_elf32_core_file_matches_executable_p PARAMS ((bfd *, | |
968 | bfd *)); | |
969 | ||
970 | extern boolean bfd_elf32_bfd_link_add_symbols | |
971 | PARAMS ((bfd *, struct bfd_link_info *)); | |
972 | extern boolean bfd_elf32_bfd_final_link | |
973 | PARAMS ((bfd *, struct bfd_link_info *)); | |
974 | ||
975 | extern void bfd_elf32_swap_symbol_in | |
976 | PARAMS ((bfd *, const Elf32_External_Sym *, Elf_Internal_Sym *)); | |
977 | extern void bfd_elf32_swap_symbol_out | |
978 | PARAMS ((bfd *, const Elf_Internal_Sym *, PTR)); | |
979 | extern void bfd_elf32_swap_reloc_in | |
980 | PARAMS ((bfd *, const Elf32_External_Rel *, Elf_Internal_Rel *)); | |
981 | extern void bfd_elf32_swap_reloc_out | |
982 | PARAMS ((bfd *, const Elf_Internal_Rel *, Elf32_External_Rel *)); | |
983 | extern void bfd_elf32_swap_reloca_in | |
984 | PARAMS ((bfd *, const Elf32_External_Rela *, Elf_Internal_Rela *)); | |
985 | extern void bfd_elf32_swap_reloca_out | |
986 | PARAMS ((bfd *, const Elf_Internal_Rela *, Elf32_External_Rela *)); | |
987 | extern void bfd_elf32_swap_phdr_in | |
988 | PARAMS ((bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *)); | |
989 | extern void bfd_elf32_swap_phdr_out | |
990 | PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *)); | |
991 | extern void bfd_elf32_swap_dyn_in | |
992 | PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); | |
993 | extern void bfd_elf32_swap_dyn_out | |
994 | PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf32_External_Dyn *)); | |
995 | extern long bfd_elf32_slurp_symbol_table | |
996 | PARAMS ((bfd *, asymbol **, boolean)); | |
997 | extern boolean bfd_elf32_write_shdrs_and_ehdr PARAMS ((bfd *)); | |
998 | extern int bfd_elf32_write_out_phdrs | |
999 | PARAMS ((bfd *, const Elf_Internal_Phdr *, int)); | |
1000 | extern boolean bfd_elf32_add_dynamic_entry | |
1001 | PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma)); | |
1002 | extern boolean bfd_elf32_link_create_dynamic_sections | |
1003 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1004 | extern Elf_Internal_Rela *_bfd_elf32_link_read_relocs | |
1005 | PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean)); | |
1006 | ||
1007 | extern const bfd_target *bfd_elf64_object_p PARAMS ((bfd *)); | |
1008 | extern const bfd_target *bfd_elf64_core_file_p PARAMS ((bfd *)); | |
1009 | extern char *bfd_elf64_core_file_failing_command PARAMS ((bfd *)); | |
1010 | extern int bfd_elf64_core_file_failing_signal PARAMS ((bfd *)); | |
1011 | extern boolean bfd_elf64_core_file_matches_executable_p PARAMS ((bfd *, | |
1012 | bfd *)); | |
1013 | extern boolean bfd_elf64_bfd_link_add_symbols | |
1014 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1015 | extern boolean bfd_elf64_bfd_final_link | |
1016 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1017 | ||
1018 | extern void bfd_elf64_swap_symbol_in | |
1019 | PARAMS ((bfd *, const Elf64_External_Sym *, Elf_Internal_Sym *)); | |
1020 | extern void bfd_elf64_swap_symbol_out | |
1021 | PARAMS ((bfd *, const Elf_Internal_Sym *, PTR)); | |
1022 | extern void bfd_elf64_swap_reloc_in | |
1023 | PARAMS ((bfd *, const Elf64_External_Rel *, Elf_Internal_Rel *)); | |
1024 | extern void bfd_elf64_swap_reloc_out | |
1025 | PARAMS ((bfd *, const Elf_Internal_Rel *, Elf64_External_Rel *)); | |
1026 | extern void bfd_elf64_swap_reloca_in | |
1027 | PARAMS ((bfd *, const Elf64_External_Rela *, Elf_Internal_Rela *)); | |
1028 | extern void bfd_elf64_swap_reloca_out | |
1029 | PARAMS ((bfd *, const Elf_Internal_Rela *, Elf64_External_Rela *)); | |
1030 | extern void bfd_elf64_swap_phdr_in | |
1031 | PARAMS ((bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *)); | |
1032 | extern void bfd_elf64_swap_phdr_out | |
1033 | PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *)); | |
1034 | extern void bfd_elf64_swap_dyn_in | |
1035 | PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); | |
1036 | extern void bfd_elf64_swap_dyn_out | |
1037 | PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf64_External_Dyn *)); | |
1038 | extern long bfd_elf64_slurp_symbol_table | |
1039 | PARAMS ((bfd *, asymbol **, boolean)); | |
1040 | extern boolean bfd_elf64_write_shdrs_and_ehdr PARAMS ((bfd *)); | |
1041 | extern int bfd_elf64_write_out_phdrs | |
1042 | PARAMS ((bfd *, const Elf_Internal_Phdr *, int)); | |
1043 | extern boolean bfd_elf64_add_dynamic_entry | |
1044 | PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma)); | |
1045 | extern boolean bfd_elf64_link_create_dynamic_sections | |
1046 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1047 | extern Elf_Internal_Rela *_bfd_elf64_link_read_relocs | |
1048 | PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean)); | |
1049 | ||
1050 | #define bfd_elf32_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol | |
1051 | #define bfd_elf64_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol | |
1052 | ||
1053 | extern boolean _bfd_elf_close_and_cleanup PARAMS ((bfd *)); | |
1054 | extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn | |
1055 | PARAMS ((bfd *, arelent *, struct symbol_cache_entry *, PTR, | |
1056 | asection *, bfd *, char **)); | |
1057 | ||
1058 | boolean _bfd_elf32_gc_sections | |
1059 | PARAMS ((bfd *abfd, struct bfd_link_info *info)); | |
1060 | boolean _bfd_elf32_gc_common_finalize_got_offsets | |
1061 | PARAMS ((bfd *abfd, struct bfd_link_info *info)); | |
1062 | boolean _bfd_elf32_gc_common_final_link | |
1063 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1064 | boolean _bfd_elf32_gc_record_vtinherit | |
1065 | PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma)); | |
1066 | boolean _bfd_elf32_gc_record_vtentry | |
1067 | PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma)); | |
1068 | ||
1069 | boolean _bfd_elf64_gc_sections | |
1070 | PARAMS ((bfd *abfd, struct bfd_link_info *info)); | |
1071 | boolean _bfd_elf64_gc_common_finalize_got_offsets | |
1072 | PARAMS ((bfd *abfd, struct bfd_link_info *info)); | |
1073 | boolean _bfd_elf64_gc_common_final_link | |
1074 | PARAMS ((bfd *, struct bfd_link_info *)); | |
1075 | boolean _bfd_elf64_gc_record_vtinherit | |
1076 | PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma)); | |
1077 | boolean _bfd_elf64_gc_record_vtentry | |
1078 | PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma)); | |
1079 | ||
1080 | /* MIPS ELF specific routines. */ | |
1081 | ||
1082 | extern boolean _bfd_mips_elf_object_p PARAMS ((bfd *)); | |
1083 | extern boolean _bfd_mips_elf_section_from_shdr | |
1084 | PARAMS ((bfd *, Elf_Internal_Shdr *, const char *)); | |
1085 | extern boolean _bfd_mips_elf_fake_sections | |
1086 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); | |
1087 | extern boolean _bfd_mips_elf_section_from_bfd_section | |
1088 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *, int *)); | |
1089 | extern boolean _bfd_mips_elf_section_processing | |
1090 | PARAMS ((bfd *, Elf_Internal_Shdr *)); | |
1091 | extern void _bfd_mips_elf_symbol_processing PARAMS ((bfd *, asymbol *)); | |
1092 | extern boolean _bfd_mips_elf_read_ecoff_info | |
1093 | PARAMS ((bfd *, asection *, struct ecoff_debug_info *)); | |
1094 | extern void _bfd_mips_elf_final_write_processing PARAMS ((bfd *, boolean)); | |
1095 | extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc | |
1096 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
1097 | extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc | |
1098 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
1099 | extern bfd_reloc_status_type _bfd_mips_elf_gprel16_reloc | |
1100 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
1101 | extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc | |
1102 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
1103 | extern bfd_reloc_status_type _bfd_mips_elf_gprel32_reloc | |
1104 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
1105 | extern boolean _bfd_mips_elf_set_private_flags PARAMS ((bfd *, flagword)); | |
1106 | extern boolean _bfd_mips_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); | |
1107 | extern boolean _bfd_mips_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); | |
1108 | extern boolean _bfd_mips_elf_find_nearest_line | |
1109 | PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **, | |
1110 | const char **, unsigned int *)); | |
1111 | extern boolean _bfd_mips_elf_set_section_contents | |
1112 | PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type)); | |
1113 | ||
1114 | #endif /* _LIBELF_H_ */ |