| 1 | /* BFD back-end data structures for ELF files. |
| 2 | Copyright (C) 1992, 93, 94, 95, 96, 1997 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 hold the offset |
| 100 | into the .got section. If this field is -1, then the symbol does |
| 101 | not require a global offset table entry. */ |
| 102 | bfd_vma got_offset; |
| 103 | |
| 104 | /* If this symbol requires an entry in the procedure linkage table, |
| 105 | the processor specific backend uses these two fields to hold the |
| 106 | offset into the procedure linkage section and the offset into the |
| 107 | .got section. If plt_offset is -1, then the symbol does not |
| 108 | require an entry in the procedure linkage table. */ |
| 109 | bfd_vma plt_offset; |
| 110 | |
| 111 | /* If this symbol is used in the linker created sections, the processor |
| 112 | specific backend uses this field to map the field into the offset |
| 113 | from the beginning of the section. */ |
| 114 | struct elf_linker_section_pointers *linker_section_pointer; |
| 115 | |
| 116 | /* Version information. */ |
| 117 | union |
| 118 | { |
| 119 | /* This field is used for a symbol which is not defined in a |
| 120 | regular object. It points to the version information read in |
| 121 | from the dynamic object. */ |
| 122 | Elf_Internal_Verdef *verdef; |
| 123 | /* This field is used for a symbol which is defined in a regular |
| 124 | object. It is set up in size_dynamic_sections. It points to |
| 125 | the version information we should write out for this symbol. */ |
| 126 | struct bfd_elf_version_tree *vertree; |
| 127 | } verinfo; |
| 128 | |
| 129 | /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */ |
| 130 | char type; |
| 131 | |
| 132 | /* Symbol st_other value. */ |
| 133 | unsigned char other; |
| 134 | |
| 135 | /* Some flags; legal values follow. */ |
| 136 | unsigned short elf_link_hash_flags; |
| 137 | /* Symbol is referenced by a non-shared object. */ |
| 138 | #define ELF_LINK_HASH_REF_REGULAR 01 |
| 139 | /* Symbol is defined by a non-shared object. */ |
| 140 | #define ELF_LINK_HASH_DEF_REGULAR 02 |
| 141 | /* Symbol is referenced by a shared object. */ |
| 142 | #define ELF_LINK_HASH_REF_DYNAMIC 04 |
| 143 | /* Symbol is defined by a shared object. */ |
| 144 | #define ELF_LINK_HASH_DEF_DYNAMIC 010 |
| 145 | /* Dynamic symbol has been adjustd. */ |
| 146 | #define ELF_LINK_HASH_DYNAMIC_ADJUSTED 020 |
| 147 | /* Symbol needs a copy reloc. */ |
| 148 | #define ELF_LINK_HASH_NEEDS_COPY 040 |
| 149 | /* Symbol needs a procedure linkage table entry. */ |
| 150 | #define ELF_LINK_HASH_NEEDS_PLT 0100 |
| 151 | /* Symbol appears in a non-ELF input file. */ |
| 152 | #define ELF_LINK_NON_ELF 0200 |
| 153 | /* Symbol should be marked as hidden in the version information. */ |
| 154 | #define ELF_LINK_HIDDEN 0400 |
| 155 | }; |
| 156 | |
| 157 | /* ELF linker hash table. */ |
| 158 | |
| 159 | struct elf_link_hash_table |
| 160 | { |
| 161 | struct bfd_link_hash_table root; |
| 162 | /* Whether we have created the special dynamic sections required |
| 163 | when linking against or generating a shared object. */ |
| 164 | boolean dynamic_sections_created; |
| 165 | /* The BFD used to hold special sections created by the linker. |
| 166 | This will be the first BFD found which requires these sections to |
| 167 | be created. */ |
| 168 | bfd *dynobj; |
| 169 | /* The number of symbols found in the link which must be put into |
| 170 | the .dynsym section. */ |
| 171 | bfd_size_type dynsymcount; |
| 172 | /* The string table of dynamic symbols, which becomes the .dynstr |
| 173 | section. */ |
| 174 | struct bfd_strtab_hash *dynstr; |
| 175 | /* The number of buckets in the hash table in the .hash section. |
| 176 | This is based on the number of dynamic symbols. */ |
| 177 | bfd_size_type bucketcount; |
| 178 | /* A linked list of DT_NEEDED names found in dynamic objects |
| 179 | included in the link. */ |
| 180 | struct bfd_link_needed_list *needed; |
| 181 | /* The _GLOBAL_OFFSET_TABLE_ symbol. */ |
| 182 | struct elf_link_hash_entry *hgot; |
| 183 | /* A pointer to information used to link stabs in sections. */ |
| 184 | PTR stab_info; |
| 185 | }; |
| 186 | |
| 187 | /* Look up an entry in an ELF linker hash table. */ |
| 188 | |
| 189 | #define elf_link_hash_lookup(table, string, create, copy, follow) \ |
| 190 | ((struct elf_link_hash_entry *) \ |
| 191 | bfd_link_hash_lookup (&(table)->root, (string), (create), \ |
| 192 | (copy), (follow))) |
| 193 | |
| 194 | /* Traverse an ELF linker hash table. */ |
| 195 | |
| 196 | #define elf_link_hash_traverse(table, func, info) \ |
| 197 | (bfd_link_hash_traverse \ |
| 198 | (&(table)->root, \ |
| 199 | (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \ |
| 200 | (info))) |
| 201 | |
| 202 | /* Get the ELF linker hash table from a link_info structure. */ |
| 203 | |
| 204 | #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash)) |
| 205 | \f |
| 206 | /* Constant information held for an ELF backend. */ |
| 207 | |
| 208 | struct elf_size_info { |
| 209 | unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr; |
| 210 | unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note; |
| 211 | |
| 212 | unsigned char arch_size, file_align; |
| 213 | unsigned char elfclass, ev_current; |
| 214 | int (*write_out_phdrs) PARAMS ((bfd *, const Elf_Internal_Phdr *, int)); |
| 215 | boolean (*write_shdrs_and_ehdr) PARAMS ((bfd *)); |
| 216 | void (*write_relocs) PARAMS ((bfd *, asection *, PTR)); |
| 217 | void (*swap_symbol_out) PARAMS ((bfd *, const Elf_Internal_Sym *, PTR)); |
| 218 | boolean (*slurp_reloc_table) |
| 219 | PARAMS ((bfd *, asection *, asymbol **, boolean)); |
| 220 | long (*slurp_symbol_table) PARAMS ((bfd *, asymbol **, boolean)); |
| 221 | void (*swap_dyn_in) PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); |
| 222 | }; |
| 223 | |
| 224 | #define elf_symbol_from(ABFD,S) \ |
| 225 | (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \ |
| 226 | && (S)->the_bfd->tdata.elf_obj_data != 0) \ |
| 227 | ? (elf_symbol_type *) (S) \ |
| 228 | : 0) |
| 229 | |
| 230 | struct elf_backend_data |
| 231 | { |
| 232 | /* Whether the backend uses REL or RELA relocations. FIXME: some |
| 233 | ELF backends use both. When we need to support one, this whole |
| 234 | approach will need to be changed. */ |
| 235 | int use_rela_p; |
| 236 | |
| 237 | /* The architecture for this backend. */ |
| 238 | enum bfd_architecture arch; |
| 239 | |
| 240 | /* The ELF machine code (EM_xxxx) for this backend. */ |
| 241 | int elf_machine_code; |
| 242 | |
| 243 | /* The maximum page size for this backend. */ |
| 244 | bfd_vma maxpagesize; |
| 245 | |
| 246 | /* This is true if the linker should act like collect and gather |
| 247 | global constructors and destructors by name. This is true for |
| 248 | MIPS ELF because the Irix 5 tools can not handle the .init |
| 249 | section. */ |
| 250 | boolean collect; |
| 251 | |
| 252 | /* This is true if the linker should ignore changes to the type of a |
| 253 | symbol. This is true for MIPS ELF because some Irix 5 objects |
| 254 | record undefined functions as STT_OBJECT although the definitions |
| 255 | are STT_FUNC. */ |
| 256 | boolean type_change_ok; |
| 257 | |
| 258 | /* A function to translate an ELF RELA relocation to a BFD arelent |
| 259 | structure. */ |
| 260 | void (*elf_info_to_howto) PARAMS ((bfd *, arelent *, |
| 261 | Elf_Internal_Rela *)); |
| 262 | |
| 263 | /* A function to translate an ELF REL relocation to a BFD arelent |
| 264 | structure. */ |
| 265 | void (*elf_info_to_howto_rel) PARAMS ((bfd *, arelent *, |
| 266 | Elf_Internal_Rel *)); |
| 267 | |
| 268 | /* A function to determine whether a symbol is global when |
| 269 | partitioning the symbol table into local and global symbols. |
| 270 | This should be NULL for most targets, in which case the correct |
| 271 | thing will be done. MIPS ELF, at least on the Irix 5, has |
| 272 | special requirements. */ |
| 273 | boolean (*elf_backend_sym_is_global) PARAMS ((bfd *, asymbol *)); |
| 274 | |
| 275 | /* The remaining functions are hooks which are called only if they |
| 276 | are not NULL. */ |
| 277 | |
| 278 | /* A function to permit a backend specific check on whether a |
| 279 | particular BFD format is relevant for an object file, and to |
| 280 | permit the backend to set any global information it wishes. When |
| 281 | this is called elf_elfheader is set, but anything else should be |
| 282 | used with caution. If this returns false, the check_format |
| 283 | routine will return a bfd_error_wrong_format error. */ |
| 284 | boolean (*elf_backend_object_p) PARAMS ((bfd *)); |
| 285 | |
| 286 | /* A function to do additional symbol processing when reading the |
| 287 | ELF symbol table. This is where any processor-specific special |
| 288 | section indices are handled. */ |
| 289 | void (*elf_backend_symbol_processing) PARAMS ((bfd *, asymbol *)); |
| 290 | |
| 291 | /* A function to do additional symbol processing after reading the |
| 292 | entire ELF symbol table. */ |
| 293 | boolean (*elf_backend_symbol_table_processing) PARAMS ((bfd *, |
| 294 | elf_symbol_type *, |
| 295 | unsigned int)); |
| 296 | |
| 297 | /* A function to do additional processing on the ELF section header |
| 298 | just before writing it out. This is used to set the flags and |
| 299 | type fields for some sections, or to actually write out data for |
| 300 | unusual sections. */ |
| 301 | boolean (*elf_backend_section_processing) PARAMS ((bfd *, |
| 302 | Elf32_Internal_Shdr *)); |
| 303 | |
| 304 | /* A function to handle unusual section types when creating BFD |
| 305 | sections from ELF sections. */ |
| 306 | boolean (*elf_backend_section_from_shdr) PARAMS ((bfd *, |
| 307 | Elf32_Internal_Shdr *, |
| 308 | char *)); |
| 309 | |
| 310 | /* A function to set up the ELF section header for a BFD section in |
| 311 | preparation for writing it out. This is where the flags and type |
| 312 | fields are set for unusual sections. */ |
| 313 | boolean (*elf_backend_fake_sections) PARAMS ((bfd *, Elf32_Internal_Shdr *, |
| 314 | asection *)); |
| 315 | |
| 316 | /* A function to get the ELF section index for a BFD section. If |
| 317 | this returns true, the section was found. If it is a normal ELF |
| 318 | section, *RETVAL should be left unchanged. If it is not a normal |
| 319 | ELF section *RETVAL should be set to the SHN_xxxx index. */ |
| 320 | boolean (*elf_backend_section_from_bfd_section) |
| 321 | PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *retval)); |
| 322 | |
| 323 | /* If this field is not NULL, it is called by the add_symbols phase |
| 324 | of a link just before adding a symbol to the global linker hash |
| 325 | table. It may modify any of the fields as it wishes. If *NAME |
| 326 | is set to NULL, the symbol will be skipped rather than being |
| 327 | added to the hash table. This function is responsible for |
| 328 | handling all processor dependent symbol bindings and section |
| 329 | indices, and must set at least *FLAGS and *SEC for each processor |
| 330 | dependent case; failure to do so will cause a link error. */ |
| 331 | boolean (*elf_add_symbol_hook) |
| 332 | PARAMS ((bfd *abfd, struct bfd_link_info *info, |
| 333 | const Elf_Internal_Sym *, const char **name, |
| 334 | flagword *flags, asection **sec, bfd_vma *value)); |
| 335 | |
| 336 | /* If this field is not NULL, it is called by the elf_link_output_sym |
| 337 | phase of a link for each symbol which will appear in the object file. */ |
| 338 | boolean (*elf_backend_link_output_symbol_hook) |
| 339 | PARAMS ((bfd *, struct bfd_link_info *info, const char *, |
| 340 | Elf_Internal_Sym *, asection *)); |
| 341 | |
| 342 | /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend |
| 343 | linker the first time it encounters a dynamic object in the link. |
| 344 | This function must create any sections required for dynamic |
| 345 | linking. The ABFD argument is a dynamic object. The .interp, |
| 346 | .dynamic, .dynsym, .dynstr, and .hash functions have already been |
| 347 | created, and this function may modify the section flags if |
| 348 | desired. This function will normally create the .got and .plt |
| 349 | sections, but different backends have different requirements. */ |
| 350 | boolean (*elf_backend_create_dynamic_sections) |
| 351 | PARAMS ((bfd *abfd, struct bfd_link_info *info)); |
| 352 | |
| 353 | /* The CHECK_RELOCS function is called by the add_symbols phase of |
| 354 | the ELF backend linker. It is called once for each section with |
| 355 | relocs of an object file, just after the symbols for the object |
| 356 | file have been added to the global linker hash table. The |
| 357 | function must look through the relocs and do any special handling |
| 358 | required. This generally means allocating space in the global |
| 359 | offset table, and perhaps allocating space for a reloc. The |
| 360 | relocs are always passed as Rela structures; if the section |
| 361 | actually uses Rel structures, the r_addend field will always be |
| 362 | zero. */ |
| 363 | boolean (*check_relocs) |
| 364 | PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o, |
| 365 | const Elf_Internal_Rela *relocs)); |
| 366 | |
| 367 | /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend |
| 368 | linker for every symbol which is defined by a dynamic object and |
| 369 | referenced by a regular object. This is called after all the |
| 370 | input files have been seen, but before the SIZE_DYNAMIC_SECTIONS |
| 371 | function has been called. The hash table entry should be |
| 372 | bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be |
| 373 | defined in a section from a dynamic object. Dynamic object |
| 374 | sections are not included in the final link, and this function is |
| 375 | responsible for changing the value to something which the rest of |
| 376 | the link can deal with. This will normally involve adding an |
| 377 | entry to the .plt or .got or some such section, and setting the |
| 378 | symbol to point to that. */ |
| 379 | boolean (*elf_backend_adjust_dynamic_symbol) |
| 380 | PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h)); |
| 381 | |
| 382 | /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker |
| 383 | after all the linker input files have been seen but before the |
| 384 | section sizes have been set. This is called after |
| 385 | ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */ |
| 386 | boolean (*elf_backend_always_size_sections) |
| 387 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); |
| 388 | |
| 389 | /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend |
| 390 | linker after all the linker input files have been seen but before |
| 391 | the sections sizes have been set. This is called after |
| 392 | ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols. |
| 393 | It is only called when linking against a dynamic object. It must |
| 394 | set the sizes of the dynamic sections, and may fill in their |
| 395 | contents as well. The generic ELF linker can handle the .dynsym, |
| 396 | .dynstr and .hash sections. This function must handle the |
| 397 | .interp section and any sections created by the |
| 398 | CREATE_DYNAMIC_SECTIONS entry point. */ |
| 399 | boolean (*elf_backend_size_dynamic_sections) |
| 400 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); |
| 401 | |
| 402 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
| 403 | to handle the relocations for a section. |
| 404 | |
| 405 | The relocs are always passed as Rela structures; if the section |
| 406 | actually uses Rel structures, the r_addend field will always be |
| 407 | zero. |
| 408 | |
| 409 | This function is responsible for adjust the section contents as |
| 410 | necessary, and (if using Rela relocs and generating a |
| 411 | relocateable output file) adjusting the reloc addend as |
| 412 | necessary. |
| 413 | |
| 414 | This function does not have to worry about setting the reloc |
| 415 | address or the reloc symbol index. |
| 416 | |
| 417 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 418 | |
| 419 | LOCAL_SECTIONS is an array giving the section in the input file |
| 420 | corresponding to the st_shndx field of each local symbol. |
| 421 | |
| 422 | The global hash table entry for the global symbols can be found |
| 423 | via elf_sym_hashes (input_bfd). |
| 424 | |
| 425 | When generating relocateable output, this function must handle |
| 426 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 427 | going to be the section symbol corresponding to the output |
| 428 | section, which means that the addend must be adjusted |
| 429 | accordingly. */ |
| 430 | boolean (*elf_backend_relocate_section) |
| 431 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info, |
| 432 | bfd *input_bfd, asection *input_section, bfd_byte *contents, |
| 433 | Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms, |
| 434 | asection **local_sections)); |
| 435 | |
| 436 | /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend |
| 437 | linker just before it writes a symbol out to the .dynsym section. |
| 438 | The processor backend may make any required adjustment to the |
| 439 | symbol. It may also take the opportunity to set contents of the |
| 440 | dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on |
| 441 | all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called |
| 442 | on those symbols which are defined by a dynamic object. */ |
| 443 | boolean (*elf_backend_finish_dynamic_symbol) |
| 444 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info, |
| 445 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)); |
| 446 | |
| 447 | /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend |
| 448 | linker just before it writes all the dynamic sections out to the |
| 449 | output file. The FINISH_DYNAMIC_SYMBOL will have been called on |
| 450 | all dynamic symbols. */ |
| 451 | boolean (*elf_backend_finish_dynamic_sections) |
| 452 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); |
| 453 | |
| 454 | /* A function to do any beginning processing needed for the ELF file |
| 455 | before building the ELF headers and computing file positions. */ |
| 456 | void (*elf_backend_begin_write_processing) |
| 457 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 458 | |
| 459 | /* A function to do any final processing needed for the ELF file |
| 460 | before writing it out. The LINKER argument is true if this BFD |
| 461 | was created by the ELF backend linker. */ |
| 462 | void (*elf_backend_final_write_processing) |
| 463 | PARAMS ((bfd *, boolean linker)); |
| 464 | |
| 465 | /* This function is called by get_program_header_size. It should |
| 466 | return the number of additional program segments which this BFD |
| 467 | will need. It should return -1 on error. */ |
| 468 | int (*elf_backend_additional_program_headers) PARAMS ((bfd *)); |
| 469 | |
| 470 | /* This function is called to modify an existing segment map in a |
| 471 | backend specific fashion. */ |
| 472 | boolean (*elf_backend_modify_segment_map) PARAMS ((bfd *)); |
| 473 | |
| 474 | /* The swapping table to use when dealing with ECOFF information. |
| 475 | Used for the MIPS ELF .mdebug section. */ |
| 476 | const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap; |
| 477 | |
| 478 | /* Alternate EM_xxxx machine codes for this backend. */ |
| 479 | int elf_machine_alt1; |
| 480 | int elf_machine_alt2; |
| 481 | |
| 482 | const struct elf_size_info *s; |
| 483 | |
| 484 | unsigned want_got_plt : 1; |
| 485 | unsigned plt_readonly : 1; |
| 486 | unsigned want_plt_sym : 1; |
| 487 | }; |
| 488 | |
| 489 | /* Information stored for each BFD section in an ELF file. This |
| 490 | structure is allocated by elf_new_section_hook. */ |
| 491 | |
| 492 | struct bfd_elf_section_data |
| 493 | { |
| 494 | /* The ELF header for this section. */ |
| 495 | Elf_Internal_Shdr this_hdr; |
| 496 | /* The ELF header for the reloc section associated with this |
| 497 | section, if any. */ |
| 498 | Elf_Internal_Shdr rel_hdr; |
| 499 | /* If there is a second reloc section associated with this section, |
| 500 | as can happen on Irix 6, this field points to the header. */ |
| 501 | Elf_Internal_Shdr *rel_hdr2; |
| 502 | /* The ELF section number of this section. Only used for an output |
| 503 | file. */ |
| 504 | int this_idx; |
| 505 | /* The ELF section number of the reloc section associated with this |
| 506 | section, if any. Only used for an output file. */ |
| 507 | int rel_idx; |
| 508 | /* Used by the backend linker to store the symbol hash table entries |
| 509 | associated with relocs against global symbols. */ |
| 510 | struct elf_link_hash_entry **rel_hashes; |
| 511 | /* A pointer to the swapped relocs. If the section uses REL relocs, |
| 512 | rather than RELA, all the r_addend fields will be zero. This |
| 513 | pointer may be NULL. It is used by the backend linker. */ |
| 514 | Elf_Internal_Rela *relocs; |
| 515 | /* Used by the backend linker when generating a shared library to |
| 516 | record the dynamic symbol index for a section symbol |
| 517 | corresponding to this section. */ |
| 518 | long dynindx; |
| 519 | /* A pointer used for .stab linking optimizations. */ |
| 520 | PTR stab_info; |
| 521 | /* A pointer available for the processor specific ELF backend. */ |
| 522 | PTR tdata; |
| 523 | }; |
| 524 | |
| 525 | #define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd) |
| 526 | |
| 527 | #define get_elf_backend_data(abfd) \ |
| 528 | ((struct elf_backend_data *) (abfd)->xvec->backend_data) |
| 529 | |
| 530 | /* Enumeration to specify the special section. */ |
| 531 | typedef enum elf_linker_section_enum |
| 532 | { |
| 533 | LINKER_SECTION_UNKNOWN, /* not used */ |
| 534 | LINKER_SECTION_GOT, /* .got section for global offset pointers */ |
| 535 | LINKER_SECTION_PLT, /* .plt section for generated procedure stubs */ |
| 536 | LINKER_SECTION_SDATA, /* .sdata/.sbss section for PowerPC */ |
| 537 | LINKER_SECTION_SDATA2, /* .sdata2/.sbss2 section for PowerPC */ |
| 538 | LINKER_SECTION_MAX /* # of linker sections */ |
| 539 | } elf_linker_section_enum_t; |
| 540 | |
| 541 | /* Sections created by the linker. */ |
| 542 | |
| 543 | typedef struct elf_linker_section |
| 544 | { |
| 545 | char *name; /* name of the section */ |
| 546 | char *rel_name; /* name of the associated .rel{,a}. section */ |
| 547 | char *bss_name; /* name of a related .bss section */ |
| 548 | char *sym_name; /* name of symbol to reference this section */ |
| 549 | asection *section; /* pointer to the section */ |
| 550 | asection *bss_section; /* pointer to the bss section associated with this */ |
| 551 | asection *rel_section; /* pointer to the relocations needed for this section */ |
| 552 | struct elf_link_hash_entry *sym_hash; /* pointer to the created symbol hash value */ |
| 553 | bfd_vma initial_size; /* initial size before any linker generated allocations */ |
| 554 | bfd_vma sym_offset; /* offset of symbol from beginning of section */ |
| 555 | bfd_vma hole_size; /* size of reserved address hole in allocation */ |
| 556 | bfd_vma hole_offset; /* current offset for the hole */ |
| 557 | bfd_vma max_hole_offset; /* maximum offset for the hole */ |
| 558 | elf_linker_section_enum_t which; /* which section this is */ |
| 559 | boolean hole_written_p; /* whether the hole has been initialized */ |
| 560 | int alignment; /* alignment for the section */ |
| 561 | flagword flags; /* flags to use to create the section */ |
| 562 | } elf_linker_section_t; |
| 563 | |
| 564 | /* Linked list of allocated pointer entries. This hangs off of the symbol lists, and |
| 565 | provides allows us to return different pointers, based on different addend's. */ |
| 566 | |
| 567 | typedef struct elf_linker_section_pointers |
| 568 | { |
| 569 | struct elf_linker_section_pointers *next; /* next allocated pointer for this symbol */ |
| 570 | bfd_vma offset; /* offset of pointer from beginning of section */ |
| 571 | bfd_signed_vma addend; /* addend used */ |
| 572 | elf_linker_section_enum_t which; /* which linker section this is */ |
| 573 | boolean written_address_p; /* whether address was written yet */ |
| 574 | } elf_linker_section_pointers_t; |
| 575 | |
| 576 | /* Some private data is stashed away for future use using the tdata pointer |
| 577 | in the bfd structure. */ |
| 578 | |
| 579 | struct elf_obj_tdata |
| 580 | { |
| 581 | Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */ |
| 582 | Elf_Internal_Shdr **elf_sect_ptr; |
| 583 | Elf_Internal_Phdr *phdr; |
| 584 | struct elf_segment_map *segment_map; |
| 585 | struct bfd_strtab_hash *strtab_ptr; |
| 586 | int num_locals; |
| 587 | int num_globals; |
| 588 | asymbol **section_syms; /* STT_SECTION symbols for each section */ |
| 589 | Elf_Internal_Shdr symtab_hdr; |
| 590 | Elf_Internal_Shdr shstrtab_hdr; |
| 591 | Elf_Internal_Shdr strtab_hdr; |
| 592 | Elf_Internal_Shdr dynsymtab_hdr; |
| 593 | Elf_Internal_Shdr dynstrtab_hdr; |
| 594 | Elf_Internal_Shdr dynversym_hdr; |
| 595 | Elf_Internal_Shdr dynverref_hdr; |
| 596 | Elf_Internal_Shdr dynverdef_hdr; |
| 597 | unsigned int symtab_section, shstrtab_section; |
| 598 | unsigned int strtab_section, dynsymtab_section; |
| 599 | unsigned int dynversym_section, dynverdef_section, dynverref_section; |
| 600 | file_ptr next_file_pos; |
| 601 | void *prstatus; /* The raw /proc prstatus structure */ |
| 602 | void *prpsinfo; /* The raw /proc prpsinfo structure */ |
| 603 | bfd_vma gp; /* The gp value (MIPS only, for now) */ |
| 604 | unsigned int gp_size; /* The gp size (MIPS only, for now) */ |
| 605 | |
| 606 | /* This is set to true if the object was created by the backend |
| 607 | linker. */ |
| 608 | boolean linker; |
| 609 | |
| 610 | /* A mapping from external symbols to entries in the linker hash |
| 611 | table, used when linking. This is indexed by the symbol index |
| 612 | minus the sh_info field of the symbol table header. */ |
| 613 | struct elf_link_hash_entry **sym_hashes; |
| 614 | |
| 615 | /* A mapping from local symbols to offsets into the global offset |
| 616 | table, used when linking. This is indexed by the symbol index. */ |
| 617 | bfd_vma *local_got_offsets; |
| 618 | |
| 619 | /* A mapping from local symbols to offsets into the various linker |
| 620 | sections added. This is index by the symbol index. */ |
| 621 | elf_linker_section_pointers_t **linker_section_pointers; |
| 622 | |
| 623 | /* The linker ELF emulation code needs to let the backend ELF linker |
| 624 | know what filename should be used for a dynamic object if the |
| 625 | dynamic object is found using a search. The emulation code then |
| 626 | sometimes needs to know what name was actually used. Until the |
| 627 | file has been added to the linker symbol table, this field holds |
| 628 | the name the linker wants. After it has been added, it holds the |
| 629 | name actually used, which will be the DT_SONAME entry if there is |
| 630 | one. */ |
| 631 | const char *dt_name; |
| 632 | |
| 633 | /* Irix 5 often screws up the symbol table, sorting local symbols |
| 634 | after global symbols. This flag is set if the symbol table in |
| 635 | this BFD appears to be screwed up. If it is, we ignore the |
| 636 | sh_info field in the symbol table header, and always read all the |
| 637 | symbols. */ |
| 638 | boolean bad_symtab; |
| 639 | |
| 640 | /* Records the result of `get_program_header_size'. */ |
| 641 | bfd_size_type program_header_size; |
| 642 | |
| 643 | /* Used by find_nearest_line entry point. */ |
| 644 | PTR line_info; |
| 645 | |
| 646 | /* Used by MIPS ELF find_nearest_line entry point. The structure |
| 647 | could be included directly in this one, but there's no point to |
| 648 | wasting the memory just for the infrequently called |
| 649 | find_nearest_line. */ |
| 650 | struct mips_elf_find_line *find_line_info; |
| 651 | |
| 652 | /* An array of stub sections indexed by symbol number, used by the |
| 653 | MIPS ELF linker. FIXME: We should figure out some way to only |
| 654 | include this field for a MIPS ELF target. */ |
| 655 | asection **local_stubs; |
| 656 | |
| 657 | /* Used to determine if the e_flags field has been initialized */ |
| 658 | boolean flags_init; |
| 659 | |
| 660 | /* Number of symbol version definitions we are about to emit. */ |
| 661 | int cverdefs; |
| 662 | |
| 663 | /* Number of symbol version references we are about to emit. */ |
| 664 | int cverrefs; |
| 665 | |
| 666 | /* Symbol version definitions in external objects. */ |
| 667 | Elf_Internal_Verdef *verdef; |
| 668 | |
| 669 | /* Symbol version references to external objects. */ |
| 670 | Elf_Internal_Verneed *verref; |
| 671 | |
| 672 | /* Linker sections that we are interested in. */ |
| 673 | struct elf_linker_section *linker_section[ (int)LINKER_SECTION_MAX ]; |
| 674 | }; |
| 675 | |
| 676 | #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) |
| 677 | #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header) |
| 678 | #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr) |
| 679 | #define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr) |
| 680 | #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section) |
| 681 | #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section) |
| 682 | #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section) |
| 683 | #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section) |
| 684 | #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section) |
| 685 | #define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals) |
| 686 | #define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals) |
| 687 | #define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms) |
| 688 | #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo) |
| 689 | #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus) |
| 690 | #define elf_gp(bfd) (elf_tdata(bfd) -> gp) |
| 691 | #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size) |
| 692 | #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes) |
| 693 | #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got_offsets) |
| 694 | #define elf_local_ptr_offsets(bfd) (elf_tdata(bfd) -> linker_section_pointers) |
| 695 | #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name) |
| 696 | #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab) |
| 697 | #define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init) |
| 698 | #define elf_linker_section(bfd,n) (elf_tdata(bfd) -> linker_section[(int)n]) |
| 699 | \f |
| 700 | extern void _bfd_elf_swap_verdef_in |
| 701 | PARAMS ((bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *)); |
| 702 | extern void _bfd_elf_swap_verdef_out |
| 703 | PARAMS ((bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *)); |
| 704 | extern void _bfd_elf_swap_verdaux_in |
| 705 | PARAMS ((bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *)); |
| 706 | extern void _bfd_elf_swap_verdaux_out |
| 707 | PARAMS ((bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *)); |
| 708 | extern void _bfd_elf_swap_verneed_in |
| 709 | PARAMS ((bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *)); |
| 710 | extern void _bfd_elf_swap_verneed_out |
| 711 | PARAMS ((bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *)); |
| 712 | extern void _bfd_elf_swap_vernaux_in |
| 713 | PARAMS ((bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *)); |
| 714 | extern void _bfd_elf_swap_vernaux_out |
| 715 | PARAMS ((bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *)); |
| 716 | extern void _bfd_elf_swap_versym_in |
| 717 | PARAMS ((bfd *, const Elf_External_Versym *, Elf_Internal_Versym *)); |
| 718 | extern void _bfd_elf_swap_versym_out |
| 719 | PARAMS ((bfd *, const Elf_Internal_Versym *, Elf_External_Versym *)); |
| 720 | |
| 721 | extern int _bfd_elf_section_from_bfd_section PARAMS ((bfd *, asection *)); |
| 722 | extern char *bfd_elf_string_from_elf_section |
| 723 | PARAMS ((bfd *, unsigned, unsigned)); |
| 724 | extern char *bfd_elf_get_str_section PARAMS ((bfd *, unsigned)); |
| 725 | |
| 726 | extern boolean _bfd_elf_print_private_bfd_data PARAMS ((bfd *, PTR)); |
| 727 | extern void bfd_elf_print_symbol PARAMS ((bfd *, PTR, asymbol *, |
| 728 | bfd_print_symbol_type)); |
| 729 | #define elf_string_from_elf_strtab(abfd,strindex) \ |
| 730 | bfd_elf_string_from_elf_section(abfd,elf_elfheader(abfd)->e_shstrndx,strindex) |
| 731 | |
| 732 | #define bfd_elf32_print_symbol bfd_elf_print_symbol |
| 733 | #define bfd_elf64_print_symbol bfd_elf_print_symbol |
| 734 | |
| 735 | extern unsigned long bfd_elf_hash PARAMS ((CONST unsigned char *)); |
| 736 | |
| 737 | extern bfd_reloc_status_type bfd_elf_generic_reloc PARAMS ((bfd *, |
| 738 | arelent *, |
| 739 | asymbol *, |
| 740 | PTR, |
| 741 | asection *, |
| 742 | bfd *, |
| 743 | char **)); |
| 744 | extern boolean bfd_elf_mkobject PARAMS ((bfd *)); |
| 745 | extern Elf_Internal_Shdr *bfd_elf_find_section PARAMS ((bfd *, char *)); |
| 746 | extern boolean _bfd_elf_make_section_from_shdr |
| 747 | PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, const char *name)); |
| 748 | extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc |
| 749 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| 750 | extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create |
| 751 | PARAMS ((bfd *)); |
| 752 | extern boolean _bfd_elf_link_hash_table_init |
| 753 | PARAMS ((struct elf_link_hash_table *, bfd *, |
| 754 | struct bfd_hash_entry *(*) (struct bfd_hash_entry *, |
| 755 | struct bfd_hash_table *, |
| 756 | const char *))); |
| 757 | extern boolean _bfd_elf_slurp_version_tables PARAMS ((bfd *)); |
| 758 | |
| 759 | extern boolean _bfd_elf_copy_private_symbol_data |
| 760 | PARAMS ((bfd *, asymbol *, bfd *, asymbol *)); |
| 761 | extern boolean _bfd_elf_copy_private_section_data |
| 762 | PARAMS ((bfd *, asection *, bfd *, asection *)); |
| 763 | extern boolean _bfd_elf_write_object_contents PARAMS ((bfd *)); |
| 764 | extern boolean _bfd_elf_set_section_contents PARAMS ((bfd *, sec_ptr, PTR, |
| 765 | file_ptr, |
| 766 | bfd_size_type)); |
| 767 | extern long _bfd_elf_get_symtab_upper_bound PARAMS ((bfd *)); |
| 768 | extern long _bfd_elf_get_symtab PARAMS ((bfd *, asymbol **)); |
| 769 | extern long _bfd_elf_get_dynamic_symtab_upper_bound PARAMS ((bfd *)); |
| 770 | extern long _bfd_elf_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **)); |
| 771 | extern long _bfd_elf_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr)); |
| 772 | extern long _bfd_elf_canonicalize_reloc PARAMS ((bfd *, sec_ptr, |
| 773 | arelent **, asymbol **)); |
| 774 | extern long _bfd_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *)); |
| 775 | extern long _bfd_elf_canonicalize_dynamic_reloc PARAMS ((bfd *, arelent **, |
| 776 | asymbol **)); |
| 777 | extern asymbol *_bfd_elf_make_empty_symbol PARAMS ((bfd *)); |
| 778 | extern void _bfd_elf_get_symbol_info PARAMS ((bfd *, asymbol *, |
| 779 | symbol_info *)); |
| 780 | extern boolean _bfd_elf_is_local_label_name PARAMS ((bfd *, const char *)); |
| 781 | extern alent *_bfd_elf_get_lineno PARAMS ((bfd *, asymbol *)); |
| 782 | extern boolean _bfd_elf_set_arch_mach PARAMS ((bfd *, enum bfd_architecture, |
| 783 | unsigned long)); |
| 784 | extern boolean _bfd_elf_find_nearest_line PARAMS ((bfd *, asection *, |
| 785 | asymbol **, |
| 786 | bfd_vma, CONST char **, |
| 787 | CONST char **, |
| 788 | unsigned int *)); |
| 789 | #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols |
| 790 | #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
| 791 | extern int _bfd_elf_sizeof_headers PARAMS ((bfd *, boolean)); |
| 792 | extern boolean _bfd_elf_new_section_hook PARAMS ((bfd *, asection *)); |
| 793 | |
| 794 | /* If the target doesn't have reloc handling written yet: */ |
| 795 | extern void _bfd_elf_no_info_to_howto PARAMS ((bfd *, arelent *, |
| 796 | Elf_Internal_Rela *)); |
| 797 | |
| 798 | extern boolean bfd_section_from_shdr PARAMS ((bfd *, unsigned int shindex)); |
| 799 | extern boolean bfd_section_from_phdr PARAMS ((bfd *, Elf_Internal_Phdr *, int)); |
| 800 | |
| 801 | extern int _bfd_elf_symbol_from_bfd_symbol PARAMS ((bfd *, asymbol **)); |
| 802 | |
| 803 | asection *bfd_section_from_elf_index PARAMS ((bfd *, unsigned int)); |
| 804 | boolean _bfd_elf_create_dynamic_sections PARAMS ((bfd *, |
| 805 | struct bfd_link_info *)); |
| 806 | struct bfd_strtab_hash *_bfd_elf_stringtab_init PARAMS ((void)); |
| 807 | boolean |
| 808 | _bfd_elf_link_record_dynamic_symbol PARAMS ((struct bfd_link_info *, |
| 809 | struct elf_link_hash_entry *)); |
| 810 | boolean |
| 811 | _bfd_elf_compute_section_file_positions PARAMS ((bfd *, |
| 812 | struct bfd_link_info *)); |
| 813 | void _bfd_elf_assign_file_positions_for_relocs PARAMS ((bfd *)); |
| 814 | file_ptr _bfd_elf_assign_file_position_for_section PARAMS ((Elf_Internal_Shdr *, |
| 815 | file_ptr, |
| 816 | boolean)); |
| 817 | |
| 818 | extern boolean _bfd_elf_validate_reloc PARAMS ((bfd *, arelent *)); |
| 819 | |
| 820 | boolean _bfd_elf_create_dynamic_sections PARAMS ((bfd *, |
| 821 | struct bfd_link_info *)); |
| 822 | boolean _bfd_elf_create_got_section PARAMS ((bfd *, |
| 823 | struct bfd_link_info *)); |
| 824 | |
| 825 | elf_linker_section_t *_bfd_elf_create_linker_section |
| 826 | PARAMS ((bfd *abfd, |
| 827 | struct bfd_link_info *info, |
| 828 | enum elf_linker_section_enum, |
| 829 | elf_linker_section_t *defaults)); |
| 830 | |
| 831 | elf_linker_section_pointers_t *_bfd_elf_find_pointer_linker_section |
| 832 | PARAMS ((elf_linker_section_pointers_t *linker_pointers, |
| 833 | bfd_signed_vma addend, |
| 834 | elf_linker_section_enum_t which)); |
| 835 | |
| 836 | boolean bfd_elf32_create_pointer_linker_section |
| 837 | PARAMS ((bfd *abfd, |
| 838 | struct bfd_link_info *info, |
| 839 | elf_linker_section_t *lsect, |
| 840 | struct elf_link_hash_entry *h, |
| 841 | const Elf32_Internal_Rela *rel)); |
| 842 | |
| 843 | bfd_vma bfd_elf32_finish_pointer_linker_section |
| 844 | PARAMS ((bfd *output_abfd, |
| 845 | bfd *input_bfd, |
| 846 | struct bfd_link_info *info, |
| 847 | elf_linker_section_t *lsect, |
| 848 | struct elf_link_hash_entry *h, |
| 849 | bfd_vma relocation, |
| 850 | const Elf32_Internal_Rela *rel, |
| 851 | int relative_reloc)); |
| 852 | |
| 853 | boolean bfd_elf64_create_pointer_linker_section |
| 854 | PARAMS ((bfd *abfd, |
| 855 | struct bfd_link_info *info, |
| 856 | elf_linker_section_t *lsect, |
| 857 | struct elf_link_hash_entry *h, |
| 858 | const Elf64_Internal_Rela *rel)); |
| 859 | |
| 860 | bfd_vma bfd_elf64_finish_pointer_linker_section |
| 861 | PARAMS ((bfd *output_abfd, |
| 862 | bfd *input_bfd, |
| 863 | struct bfd_link_info *info, |
| 864 | elf_linker_section_t *lsect, |
| 865 | struct elf_link_hash_entry *h, |
| 866 | bfd_vma relocation, |
| 867 | const Elf64_Internal_Rela *rel, |
| 868 | int relative_reloc)); |
| 869 | |
| 870 | boolean _bfd_elf_make_linker_section_rela |
| 871 | PARAMS ((bfd *dynobj, |
| 872 | elf_linker_section_t *lsect, |
| 873 | int alignment)); |
| 874 | |
| 875 | extern const bfd_target *bfd_elf32_object_p PARAMS ((bfd *)); |
| 876 | extern const bfd_target *bfd_elf32_core_file_p PARAMS ((bfd *)); |
| 877 | extern char *bfd_elf32_core_file_failing_command PARAMS ((bfd *)); |
| 878 | extern int bfd_elf32_core_file_failing_signal PARAMS ((bfd *)); |
| 879 | extern boolean bfd_elf32_core_file_matches_executable_p PARAMS ((bfd *, |
| 880 | bfd *)); |
| 881 | |
| 882 | extern boolean bfd_elf32_bfd_link_add_symbols |
| 883 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 884 | extern boolean bfd_elf32_bfd_final_link |
| 885 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 886 | |
| 887 | extern void bfd_elf32_swap_symbol_in |
| 888 | PARAMS ((bfd *, const Elf32_External_Sym *, Elf_Internal_Sym *)); |
| 889 | extern void bfd_elf32_swap_symbol_out |
| 890 | PARAMS ((bfd *, const Elf_Internal_Sym *, PTR)); |
| 891 | extern void bfd_elf32_swap_reloc_in |
| 892 | PARAMS ((bfd *, const Elf32_External_Rel *, Elf_Internal_Rel *)); |
| 893 | extern void bfd_elf32_swap_reloc_out |
| 894 | PARAMS ((bfd *, const Elf_Internal_Rel *, Elf32_External_Rel *)); |
| 895 | extern void bfd_elf32_swap_reloca_in |
| 896 | PARAMS ((bfd *, const Elf32_External_Rela *, Elf_Internal_Rela *)); |
| 897 | extern void bfd_elf32_swap_reloca_out |
| 898 | PARAMS ((bfd *, const Elf_Internal_Rela *, Elf32_External_Rela *)); |
| 899 | extern void bfd_elf32_swap_phdr_in |
| 900 | PARAMS ((bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *)); |
| 901 | extern void bfd_elf32_swap_phdr_out |
| 902 | PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *)); |
| 903 | extern void bfd_elf32_swap_dyn_in |
| 904 | PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); |
| 905 | extern void bfd_elf32_swap_dyn_out |
| 906 | PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf32_External_Dyn *)); |
| 907 | extern long bfd_elf32_slurp_symbol_table |
| 908 | PARAMS ((bfd *, asymbol **, boolean)); |
| 909 | extern boolean bfd_elf32_write_shdrs_and_ehdr PARAMS ((bfd *)); |
| 910 | extern int bfd_elf32_write_out_phdrs |
| 911 | PARAMS ((bfd *, const Elf_Internal_Phdr *, int)); |
| 912 | extern boolean bfd_elf32_add_dynamic_entry |
| 913 | PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma)); |
| 914 | extern boolean bfd_elf32_link_create_dynamic_sections |
| 915 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 916 | extern Elf_Internal_Rela *_bfd_elf32_link_read_relocs |
| 917 | PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean)); |
| 918 | |
| 919 | extern const bfd_target *bfd_elf64_object_p PARAMS ((bfd *)); |
| 920 | extern const bfd_target *bfd_elf64_core_file_p PARAMS ((bfd *)); |
| 921 | extern char *bfd_elf64_core_file_failing_command PARAMS ((bfd *)); |
| 922 | extern int bfd_elf64_core_file_failing_signal PARAMS ((bfd *)); |
| 923 | extern boolean bfd_elf64_core_file_matches_executable_p PARAMS ((bfd *, |
| 924 | bfd *)); |
| 925 | extern boolean bfd_elf64_bfd_link_add_symbols |
| 926 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 927 | extern boolean bfd_elf64_bfd_final_link |
| 928 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 929 | |
| 930 | extern void bfd_elf64_swap_symbol_in |
| 931 | PARAMS ((bfd *, const Elf64_External_Sym *, Elf_Internal_Sym *)); |
| 932 | extern void bfd_elf64_swap_symbol_out |
| 933 | PARAMS ((bfd *, const Elf_Internal_Sym *, PTR)); |
| 934 | extern void bfd_elf64_swap_reloc_in |
| 935 | PARAMS ((bfd *, const Elf64_External_Rel *, Elf_Internal_Rel *)); |
| 936 | extern void bfd_elf64_swap_reloc_out |
| 937 | PARAMS ((bfd *, const Elf_Internal_Rel *, Elf64_External_Rel *)); |
| 938 | extern void bfd_elf64_swap_reloca_in |
| 939 | PARAMS ((bfd *, const Elf64_External_Rela *, Elf_Internal_Rela *)); |
| 940 | extern void bfd_elf64_swap_reloca_out |
| 941 | PARAMS ((bfd *, const Elf_Internal_Rela *, Elf64_External_Rela *)); |
| 942 | extern void bfd_elf64_swap_phdr_in |
| 943 | PARAMS ((bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *)); |
| 944 | extern void bfd_elf64_swap_phdr_out |
| 945 | PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *)); |
| 946 | extern void bfd_elf64_swap_dyn_in |
| 947 | PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); |
| 948 | extern void bfd_elf64_swap_dyn_out |
| 949 | PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf64_External_Dyn *)); |
| 950 | extern long bfd_elf64_slurp_symbol_table |
| 951 | PARAMS ((bfd *, asymbol **, boolean)); |
| 952 | extern boolean bfd_elf64_write_shdrs_and_ehdr PARAMS ((bfd *)); |
| 953 | extern int bfd_elf64_write_out_phdrs |
| 954 | PARAMS ((bfd *, const Elf_Internal_Phdr *, int)); |
| 955 | extern boolean bfd_elf64_add_dynamic_entry |
| 956 | PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma)); |
| 957 | extern boolean bfd_elf64_link_create_dynamic_sections |
| 958 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 959 | extern Elf_Internal_Rela *_bfd_elf64_link_read_relocs |
| 960 | PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean)); |
| 961 | |
| 962 | #define bfd_elf32_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol |
| 963 | #define bfd_elf64_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol |
| 964 | |
| 965 | /* MIPS ELF specific routines. */ |
| 966 | |
| 967 | extern boolean _bfd_mips_elf_object_p PARAMS ((bfd *)); |
| 968 | extern boolean _bfd_mips_elf_section_from_shdr |
| 969 | PARAMS ((bfd *, Elf_Internal_Shdr *, const char *)); |
| 970 | extern boolean _bfd_mips_elf_fake_sections |
| 971 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); |
| 972 | extern boolean _bfd_mips_elf_section_from_bfd_section |
| 973 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *, int *)); |
| 974 | extern boolean _bfd_mips_elf_section_processing |
| 975 | PARAMS ((bfd *, Elf_Internal_Shdr *)); |
| 976 | extern void _bfd_mips_elf_symbol_processing PARAMS ((bfd *, asymbol *)); |
| 977 | extern boolean _bfd_mips_elf_read_ecoff_info |
| 978 | PARAMS ((bfd *, asection *, struct ecoff_debug_info *)); |
| 979 | extern void _bfd_mips_elf_final_write_processing PARAMS ((bfd *, boolean)); |
| 980 | extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc |
| 981 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 982 | extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc |
| 983 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 984 | extern bfd_reloc_status_type _bfd_mips_elf_gprel16_reloc |
| 985 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 986 | extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc |
| 987 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 988 | extern bfd_reloc_status_type _bfd_mips_elf_gprel32_reloc |
| 989 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 990 | extern boolean _bfd_mips_elf_set_private_flags PARAMS ((bfd *, flagword)); |
| 991 | extern boolean _bfd_mips_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); |
| 992 | extern boolean _bfd_mips_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); |
| 993 | extern boolean _bfd_mips_elf_find_nearest_line |
| 994 | PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **, |
| 995 | const char **, unsigned int *)); |
| 996 | extern boolean _bfd_mips_elf_set_section_contents |
| 997 | PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type)); |
| 998 | |
| 999 | #endif /* _LIBELF_H_ */ |