| 1 | /* BFD back-end data structures for ELF files. |
| 2 | Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
| 3 | 2002 Free Software Foundation, Inc. |
| 4 | Written by Cygnus Support. |
| 5 | |
| 6 | This file is part of BFD, the Binary File Descriptor library. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #ifndef _LIBELF_H_ |
| 23 | #define _LIBELF_H_ 1 |
| 24 | |
| 25 | #include "elf/common.h" |
| 26 | #include "elf/internal.h" |
| 27 | #include "elf/external.h" |
| 28 | #include "bfdlink.h" |
| 29 | |
| 30 | /* The number of entries in a section is its size divided by the size |
| 31 | of a single entry. This is normally only applicable to reloc and |
| 32 | symbol table sections. */ |
| 33 | #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_size / (shdr)->sh_entsize) |
| 34 | |
| 35 | /* If size isn't specified as 64 or 32, NAME macro should fail. */ |
| 36 | /* Do not "beautify" the CONCAT* macro args. Traditional C will not |
| 37 | remove whitespace added here, and thus will fail to concatenate |
| 38 | the tokens. */ |
| 39 | #ifndef NAME |
| 40 | #if ARCH_SIZE==64 |
| 41 | #define NAME(x,y) CONCAT4 (x,64,_,y) |
| 42 | #endif |
| 43 | #if ARCH_SIZE==32 |
| 44 | #define NAME(x,y) CONCAT4 (x,32,_,y) |
| 45 | #endif |
| 46 | #endif |
| 47 | |
| 48 | #ifndef NAME |
| 49 | #define NAME(x,y) CONCAT4 (x,NOSIZE,_,y) |
| 50 | #endif |
| 51 | |
| 52 | #define ElfNAME(X) NAME(Elf,X) |
| 53 | #define elfNAME(X) NAME(elf,X) |
| 54 | |
| 55 | /* Information held for an ELF symbol. The first field is the |
| 56 | corresponding asymbol. Every symbol is an ELF file is actually a |
| 57 | pointer to this structure, although it is often handled as a |
| 58 | pointer to an asymbol. */ |
| 59 | |
| 60 | typedef struct |
| 61 | { |
| 62 | /* The BFD symbol. */ |
| 63 | asymbol symbol; |
| 64 | /* ELF symbol information. */ |
| 65 | Elf_Internal_Sym internal_elf_sym; |
| 66 | /* Backend specific information. */ |
| 67 | union |
| 68 | { |
| 69 | unsigned int hppa_arg_reloc; |
| 70 | PTR mips_extr; |
| 71 | PTR any; |
| 72 | } |
| 73 | tc_data; |
| 74 | |
| 75 | /* Version information. This is from an Elf_Internal_Versym |
| 76 | structure in a SHT_GNU_versym section. It is zero if there is no |
| 77 | version information. */ |
| 78 | unsigned short version; |
| 79 | |
| 80 | } elf_symbol_type; |
| 81 | \f |
| 82 | struct elf_strtab_hash; |
| 83 | |
| 84 | /* ELF linker hash table entries. */ |
| 85 | |
| 86 | struct elf_link_hash_entry |
| 87 | { |
| 88 | struct bfd_link_hash_entry root; |
| 89 | |
| 90 | /* Symbol index in output file. This is initialized to -1. It is |
| 91 | set to -2 if the symbol is used by a reloc. */ |
| 92 | long indx; |
| 93 | |
| 94 | /* Symbol index as a dynamic symbol. Initialized to -1, and remains |
| 95 | -1 if this is not a dynamic symbol. */ |
| 96 | /* ??? Note that this is consistently used as a synonym for tests |
| 97 | against whether we can perform various simplifying transformations |
| 98 | to the code. (E.g. changing a pc-relative jump to a PLT entry |
| 99 | into a pc-relative jump to the target function.) That test, which |
| 100 | is often relatively complex, and someplaces wrong or incomplete, |
| 101 | should really be replaced by a predicate in elflink.c. |
| 102 | |
| 103 | End result: this field -1 does not indicate that the symbol is |
| 104 | not in the dynamic symbol table, but rather that the symbol is |
| 105 | not visible outside this DSO. */ |
| 106 | long dynindx; |
| 107 | |
| 108 | /* String table index in .dynstr if this is a dynamic symbol. */ |
| 109 | unsigned long dynstr_index; |
| 110 | |
| 111 | /* Hash value of the name computed using the ELF hash function. */ |
| 112 | unsigned long elf_hash_value; |
| 113 | |
| 114 | /* If this is a weak defined symbol from a dynamic object, this |
| 115 | field points to a defined symbol with the same value, if there is |
| 116 | one. Otherwise it is NULL. */ |
| 117 | struct elf_link_hash_entry *weakdef; |
| 118 | |
| 119 | /* If this symbol is used in the linker created sections, the processor |
| 120 | specific backend uses this field to map the field into the offset |
| 121 | from the beginning of the section. */ |
| 122 | struct elf_linker_section_pointers *linker_section_pointer; |
| 123 | |
| 124 | /* Version information. */ |
| 125 | union |
| 126 | { |
| 127 | /* This field is used for a symbol which is not defined in a |
| 128 | regular object. It points to the version information read in |
| 129 | from the dynamic object. */ |
| 130 | Elf_Internal_Verdef *verdef; |
| 131 | /* This field is used for a symbol which is defined in a regular |
| 132 | object. It is set up in size_dynamic_sections. It points to |
| 133 | the version information we should write out for this symbol. */ |
| 134 | struct bfd_elf_version_tree *vertree; |
| 135 | } verinfo; |
| 136 | |
| 137 | /* Virtual table entry use information. This array is nominally of size |
| 138 | size/sizeof(target_void_pointer), though we have to be able to assume |
| 139 | and track a size while the symbol is still undefined. It is indexed |
| 140 | via offset/sizeof(target_void_pointer). */ |
| 141 | size_t vtable_entries_size; |
| 142 | boolean *vtable_entries_used; |
| 143 | |
| 144 | /* Virtual table derivation info. */ |
| 145 | struct elf_link_hash_entry *vtable_parent; |
| 146 | |
| 147 | /* If this symbol requires an entry in the global offset table, the |
| 148 | processor specific backend uses this field to track usage and |
| 149 | final offset. We use a union and two names primarily to document |
| 150 | the intent of any particular piece of code. The field should be |
| 151 | used as a count until size_dynamic_sections, at which point the |
| 152 | contents of the .got is fixed. Afterward, if this field is -1, |
| 153 | then the symbol does not require a global offset table entry. */ |
| 154 | union |
| 155 | { |
| 156 | bfd_signed_vma refcount; |
| 157 | bfd_vma offset; |
| 158 | } got; |
| 159 | |
| 160 | /* Same, but tracks a procedure linkage table entry. */ |
| 161 | union |
| 162 | { |
| 163 | bfd_signed_vma refcount; |
| 164 | bfd_vma offset; |
| 165 | } plt; |
| 166 | |
| 167 | /* Symbol size. */ |
| 168 | bfd_size_type size; |
| 169 | |
| 170 | /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */ |
| 171 | char type; |
| 172 | |
| 173 | /* Symbol st_other value, symbol visibility. */ |
| 174 | unsigned char other; |
| 175 | |
| 176 | /* Some flags; legal values follow. */ |
| 177 | unsigned short elf_link_hash_flags; |
| 178 | /* Symbol is referenced by a non-shared object. */ |
| 179 | #define ELF_LINK_HASH_REF_REGULAR 01 |
| 180 | /* Symbol is defined by a non-shared object. */ |
| 181 | #define ELF_LINK_HASH_DEF_REGULAR 02 |
| 182 | /* Symbol is referenced by a shared object. */ |
| 183 | #define ELF_LINK_HASH_REF_DYNAMIC 04 |
| 184 | /* Symbol is defined by a shared object. */ |
| 185 | #define ELF_LINK_HASH_DEF_DYNAMIC 010 |
| 186 | /* Symbol has a non-weak reference from a non-shared object. */ |
| 187 | #define ELF_LINK_HASH_REF_REGULAR_NONWEAK 020 |
| 188 | /* Dynamic symbol has been adjustd. */ |
| 189 | #define ELF_LINK_HASH_DYNAMIC_ADJUSTED 040 |
| 190 | /* Symbol needs a copy reloc. */ |
| 191 | #define ELF_LINK_HASH_NEEDS_COPY 0100 |
| 192 | /* Symbol needs a procedure linkage table entry. */ |
| 193 | #define ELF_LINK_HASH_NEEDS_PLT 0200 |
| 194 | /* Symbol appears in a non-ELF input file. */ |
| 195 | #define ELF_LINK_NON_ELF 0400 |
| 196 | /* Symbol should be marked as hidden in the version information. */ |
| 197 | #define ELF_LINK_HIDDEN 01000 |
| 198 | /* Symbol was forced to local scope due to a version script file. */ |
| 199 | #define ELF_LINK_FORCED_LOCAL 02000 |
| 200 | /* Symbol was marked during garbage collection. */ |
| 201 | #define ELF_LINK_HASH_MARK 04000 |
| 202 | /* Symbol is referenced by a non-GOT/non-PLT relocation. This is |
| 203 | not currently set by all the backends. */ |
| 204 | #define ELF_LINK_NON_GOT_REF 010000 |
| 205 | }; |
| 206 | |
| 207 | /* Records local symbols to be emitted in the dynamic symbol table. */ |
| 208 | |
| 209 | struct elf_link_local_dynamic_entry |
| 210 | { |
| 211 | struct elf_link_local_dynamic_entry *next; |
| 212 | |
| 213 | /* The input bfd this symbol came from. */ |
| 214 | bfd *input_bfd; |
| 215 | |
| 216 | /* The index of the local symbol being copied. */ |
| 217 | long input_indx; |
| 218 | |
| 219 | /* The index in the outgoing dynamic symbol table. */ |
| 220 | long dynindx; |
| 221 | |
| 222 | /* A copy of the input symbol. */ |
| 223 | Elf_Internal_Sym isym; |
| 224 | }; |
| 225 | |
| 226 | enum elf_link_info_type |
| 227 | { |
| 228 | ELF_INFO_TYPE_NONE, |
| 229 | ELF_INFO_TYPE_STABS, |
| 230 | ELF_INFO_TYPE_MERGE, |
| 231 | ELF_INFO_TYPE_EH_FRAME, |
| 232 | ELF_INFO_TYPE_EH_FRAME_HDR, |
| 233 | ELF_INFO_TYPE_JUST_SYMS, |
| 234 | ELF_INFO_TYPE_LAST |
| 235 | }; |
| 236 | |
| 237 | /* Cached start, size and alignment of PT_TLS segment. */ |
| 238 | struct elf_link_tls_segment |
| 239 | { |
| 240 | bfd_vma start; |
| 241 | bfd_size_type size; |
| 242 | unsigned int align; |
| 243 | }; |
| 244 | |
| 245 | /* ELF linker hash table. */ |
| 246 | |
| 247 | struct elf_link_hash_table |
| 248 | { |
| 249 | struct bfd_link_hash_table root; |
| 250 | |
| 251 | /* Whether we have created the special dynamic sections required |
| 252 | when linking against or generating a shared object. */ |
| 253 | boolean dynamic_sections_created; |
| 254 | |
| 255 | /* The BFD used to hold special sections created by the linker. |
| 256 | This will be the first BFD found which requires these sections to |
| 257 | be created. */ |
| 258 | bfd *dynobj; |
| 259 | |
| 260 | /* The value to use when initialising got.refcount/offset and |
| 261 | plt.refcount/offset in an elf_link_hash_entry. Set to zero when |
| 262 | the values are refcounts. Set to -1 in size_dynamic_sections |
| 263 | when the values may be offsets. */ |
| 264 | bfd_signed_vma init_refcount; |
| 265 | |
| 266 | /* The number of symbols found in the link which must be put into |
| 267 | the .dynsym section. */ |
| 268 | bfd_size_type dynsymcount; |
| 269 | |
| 270 | /* The string table of dynamic symbols, which becomes the .dynstr |
| 271 | section. */ |
| 272 | struct elf_strtab_hash *dynstr; |
| 273 | |
| 274 | /* The number of buckets in the hash table in the .hash section. |
| 275 | This is based on the number of dynamic symbols. */ |
| 276 | bfd_size_type bucketcount; |
| 277 | |
| 278 | /* A linked list of DT_NEEDED names found in dynamic objects |
| 279 | included in the link. */ |
| 280 | struct bfd_link_needed_list *needed; |
| 281 | |
| 282 | /* The _GLOBAL_OFFSET_TABLE_ symbol. */ |
| 283 | struct elf_link_hash_entry *hgot; |
| 284 | |
| 285 | /* A pointer to information used to link stabs in sections. */ |
| 286 | PTR stab_info; |
| 287 | |
| 288 | /* A pointer to information used to merge SEC_MERGE sections. */ |
| 289 | PTR merge_info; |
| 290 | |
| 291 | /* A linked list of local symbols to be added to .dynsym. */ |
| 292 | struct elf_link_local_dynamic_entry *dynlocal; |
| 293 | |
| 294 | /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic |
| 295 | objects included in the link. */ |
| 296 | struct bfd_link_needed_list *runpath; |
| 297 | |
| 298 | /* Cached start, size and alignment of PT_TLS segment. */ |
| 299 | struct elf_link_tls_segment *tls_segment; |
| 300 | }; |
| 301 | |
| 302 | /* Look up an entry in an ELF linker hash table. */ |
| 303 | |
| 304 | #define elf_link_hash_lookup(table, string, create, copy, follow) \ |
| 305 | ((struct elf_link_hash_entry *) \ |
| 306 | bfd_link_hash_lookup (&(table)->root, (string), (create), \ |
| 307 | (copy), (follow))) |
| 308 | |
| 309 | /* Traverse an ELF linker hash table. */ |
| 310 | |
| 311 | #define elf_link_hash_traverse(table, func, info) \ |
| 312 | (bfd_link_hash_traverse \ |
| 313 | (&(table)->root, \ |
| 314 | (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \ |
| 315 | (info))) |
| 316 | |
| 317 | /* Get the ELF linker hash table from a link_info structure. */ |
| 318 | |
| 319 | #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash)) |
| 320 | |
| 321 | /* Returns true if the hash table is a struct elf_link_hash_table. */ |
| 322 | #define is_elf_hash_table(p) \ |
| 323 | ((p)->hash->type == bfd_link_elf_hash_table) |
| 324 | |
| 325 | /* Used by bfd_section_from_r_symndx to cache a small number of local |
| 326 | symbol to section mappings. */ |
| 327 | #define LOCAL_SYM_CACHE_SIZE 32 |
| 328 | struct sym_sec_cache |
| 329 | { |
| 330 | bfd *abfd; |
| 331 | unsigned long indx[LOCAL_SYM_CACHE_SIZE]; |
| 332 | asection *sec[LOCAL_SYM_CACHE_SIZE]; |
| 333 | }; |
| 334 | \f |
| 335 | /* Constant information held for an ELF backend. */ |
| 336 | |
| 337 | struct elf_size_info { |
| 338 | unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr; |
| 339 | unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note; |
| 340 | |
| 341 | /* The size of entries in the .hash section. */ |
| 342 | unsigned char sizeof_hash_entry; |
| 343 | |
| 344 | /* The number of internal relocations to allocate per external |
| 345 | relocation entry. */ |
| 346 | unsigned char int_rels_per_ext_rel; |
| 347 | |
| 348 | unsigned char arch_size, file_align; |
| 349 | unsigned char elfclass, ev_current; |
| 350 | int (*write_out_phdrs) |
| 351 | PARAMS ((bfd *, const Elf_Internal_Phdr *, unsigned int)); |
| 352 | boolean (*write_shdrs_and_ehdr) |
| 353 | PARAMS ((bfd *)); |
| 354 | void (*write_relocs) |
| 355 | PARAMS ((bfd *, asection *, PTR)); |
| 356 | void (*swap_symbol_in) |
| 357 | PARAMS ((bfd *, const PTR, const PTR, Elf_Internal_Sym *)); |
| 358 | void (*swap_symbol_out) |
| 359 | PARAMS ((bfd *, const Elf_Internal_Sym *, PTR, PTR)); |
| 360 | boolean (*slurp_reloc_table) |
| 361 | PARAMS ((bfd *, asection *, asymbol **, boolean)); |
| 362 | long (*slurp_symbol_table) |
| 363 | PARAMS ((bfd *, asymbol **, boolean)); |
| 364 | void (*swap_dyn_in) |
| 365 | PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); |
| 366 | void (*swap_dyn_out) |
| 367 | PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR)); |
| 368 | |
| 369 | /* This function, if defined, is called to swap in a REL |
| 370 | relocation. If an external relocation corresponds to more than |
| 371 | one internal relocation, then all relocations are swapped in at |
| 372 | once. */ |
| 373 | void (*swap_reloc_in) |
| 374 | PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rel *)); |
| 375 | |
| 376 | /* This function, if defined, is called to swap out a REL |
| 377 | relocation. */ |
| 378 | void (*swap_reloc_out) |
| 379 | PARAMS ((bfd *, const Elf_Internal_Rel *, bfd_byte *)); |
| 380 | |
| 381 | /* This function, if defined, is called to swap in a RELA |
| 382 | relocation. If an external relocation corresponds to more than |
| 383 | one internal relocation, then all relocations are swapped in at |
| 384 | once. */ |
| 385 | void (*swap_reloca_in) |
| 386 | PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *)); |
| 387 | |
| 388 | /* This function, if defined, is called to swap out a RELA |
| 389 | relocation. */ |
| 390 | void (*swap_reloca_out) |
| 391 | PARAMS ((bfd *, const Elf_Internal_Rela *, bfd_byte *)); |
| 392 | |
| 393 | }; |
| 394 | |
| 395 | #define elf_symbol_from(ABFD,S) \ |
| 396 | (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \ |
| 397 | && (S)->the_bfd->tdata.elf_obj_data != 0) \ |
| 398 | ? (elf_symbol_type *) (S) \ |
| 399 | : 0) |
| 400 | |
| 401 | enum elf_reloc_type_class { |
| 402 | reloc_class_normal, |
| 403 | reloc_class_relative, |
| 404 | reloc_class_plt, |
| 405 | reloc_class_copy |
| 406 | }; |
| 407 | |
| 408 | struct elf_reloc_cookie |
| 409 | { |
| 410 | Elf_Internal_Rela *rels, *rel, *relend; |
| 411 | PTR locsyms; |
| 412 | PTR locsym_shndx; |
| 413 | bfd *abfd; |
| 414 | size_t locsymcount; |
| 415 | size_t extsymoff; |
| 416 | struct elf_link_hash_entry **sym_hashes; |
| 417 | boolean bad_symtab; |
| 418 | }; |
| 419 | |
| 420 | /* The level of IRIX compatibility we're striving for. */ |
| 421 | |
| 422 | typedef enum { |
| 423 | ict_none, |
| 424 | ict_irix5, |
| 425 | ict_irix6 |
| 426 | } irix_compat_t; |
| 427 | |
| 428 | struct elf_backend_data |
| 429 | { |
| 430 | /* The architecture for this backend. */ |
| 431 | enum bfd_architecture arch; |
| 432 | |
| 433 | /* The ELF machine code (EM_xxxx) for this backend. */ |
| 434 | int elf_machine_code; |
| 435 | |
| 436 | /* The maximum page size for this backend. */ |
| 437 | bfd_vma maxpagesize; |
| 438 | |
| 439 | /* A function to translate an ELF RELA relocation to a BFD arelent |
| 440 | structure. */ |
| 441 | void (*elf_info_to_howto) |
| 442 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
| 443 | |
| 444 | /* A function to translate an ELF REL relocation to a BFD arelent |
| 445 | structure. */ |
| 446 | void (*elf_info_to_howto_rel) |
| 447 | PARAMS ((bfd *, arelent *, Elf_Internal_Rel *)); |
| 448 | |
| 449 | /* A function to determine whether a symbol is global when |
| 450 | partitioning the symbol table into local and global symbols. |
| 451 | This should be NULL for most targets, in which case the correct |
| 452 | thing will be done. MIPS ELF, at least on the Irix 5, has |
| 453 | special requirements. */ |
| 454 | boolean (*elf_backend_sym_is_global) |
| 455 | PARAMS ((bfd *, asymbol *)); |
| 456 | |
| 457 | /* The remaining functions are hooks which are called only if they |
| 458 | are not NULL. */ |
| 459 | |
| 460 | /* A function to permit a backend specific check on whether a |
| 461 | particular BFD format is relevant for an object file, and to |
| 462 | permit the backend to set any global information it wishes. When |
| 463 | this is called elf_elfheader is set, but anything else should be |
| 464 | used with caution. If this returns false, the check_format |
| 465 | routine will return a bfd_error_wrong_format error. */ |
| 466 | boolean (*elf_backend_object_p) |
| 467 | PARAMS ((bfd *)); |
| 468 | |
| 469 | /* A function to do additional symbol processing when reading the |
| 470 | ELF symbol table. This is where any processor-specific special |
| 471 | section indices are handled. */ |
| 472 | void (*elf_backend_symbol_processing) |
| 473 | PARAMS ((bfd *, asymbol *)); |
| 474 | |
| 475 | /* A function to do additional symbol processing after reading the |
| 476 | entire ELF symbol table. */ |
| 477 | boolean (*elf_backend_symbol_table_processing) |
| 478 | PARAMS ((bfd *, elf_symbol_type *, unsigned int)); |
| 479 | |
| 480 | /* A function to set the type of the info field. Processor-specific |
| 481 | types should be handled here. */ |
| 482 | int (*elf_backend_get_symbol_type) |
| 483 | PARAMS (( Elf_Internal_Sym *, int)); |
| 484 | |
| 485 | /* A function to do additional processing on the ELF section header |
| 486 | just before writing it out. This is used to set the flags and |
| 487 | type fields for some sections, or to actually write out data for |
| 488 | unusual sections. */ |
| 489 | boolean (*elf_backend_section_processing) |
| 490 | PARAMS ((bfd *, Elf32_Internal_Shdr *)); |
| 491 | |
| 492 | /* A function to handle unusual section types when creating BFD |
| 493 | sections from ELF sections. */ |
| 494 | boolean (*elf_backend_section_from_shdr) |
| 495 | PARAMS ((bfd *, Elf32_Internal_Shdr *, const char *)); |
| 496 | |
| 497 | /* A function to convert machine dependent section header flags to |
| 498 | BFD internal section header flags. */ |
| 499 | boolean (*elf_backend_section_flags) |
| 500 | PARAMS ((flagword *, Elf32_Internal_Shdr *)); |
| 501 | |
| 502 | /* A function to handle unusual program segment types when creating BFD |
| 503 | sections from ELF program segments. */ |
| 504 | boolean (*elf_backend_section_from_phdr) |
| 505 | PARAMS ((bfd *, Elf32_Internal_Phdr *, int)); |
| 506 | |
| 507 | /* A function to set up the ELF section header for a BFD section in |
| 508 | preparation for writing it out. This is where the flags and type |
| 509 | fields are set for unusual sections. */ |
| 510 | boolean (*elf_backend_fake_sections) |
| 511 | PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *)); |
| 512 | |
| 513 | /* A function to get the ELF section index for a BFD section. If |
| 514 | this returns true, the section was found. If it is a normal ELF |
| 515 | section, *RETVAL should be left unchanged. If it is not a normal |
| 516 | ELF section *RETVAL should be set to the SHN_xxxx index. */ |
| 517 | boolean (*elf_backend_section_from_bfd_section) |
| 518 | PARAMS ((bfd *, asection *, int *retval)); |
| 519 | |
| 520 | /* If this field is not NULL, it is called by the add_symbols phase |
| 521 | of a link just before adding a symbol to the global linker hash |
| 522 | table. It may modify any of the fields as it wishes. If *NAME |
| 523 | is set to NULL, the symbol will be skipped rather than being |
| 524 | added to the hash table. This function is responsible for |
| 525 | handling all processor dependent symbol bindings and section |
| 526 | indices, and must set at least *FLAGS and *SEC for each processor |
| 527 | dependent case; failure to do so will cause a link error. */ |
| 528 | boolean (*elf_add_symbol_hook) |
| 529 | PARAMS ((bfd *abfd, struct bfd_link_info *info, |
| 530 | const Elf_Internal_Sym *, const char **name, |
| 531 | flagword *flags, asection **sec, bfd_vma *value)); |
| 532 | |
| 533 | /* If this field is not NULL, it is called by the elf_link_output_sym |
| 534 | phase of a link for each symbol which will appear in the object file. */ |
| 535 | boolean (*elf_backend_link_output_symbol_hook) |
| 536 | PARAMS ((bfd *, struct bfd_link_info *info, const char *, |
| 537 | Elf_Internal_Sym *, asection *)); |
| 538 | |
| 539 | /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend |
| 540 | linker the first time it encounters a dynamic object in the link. |
| 541 | This function must create any sections required for dynamic |
| 542 | linking. The ABFD argument is a dynamic object. The .interp, |
| 543 | .dynamic, .dynsym, .dynstr, and .hash functions have already been |
| 544 | created, and this function may modify the section flags if |
| 545 | desired. This function will normally create the .got and .plt |
| 546 | sections, but different backends have different requirements. */ |
| 547 | boolean (*elf_backend_create_dynamic_sections) |
| 548 | PARAMS ((bfd *abfd, struct bfd_link_info *info)); |
| 549 | |
| 550 | /* The CHECK_RELOCS function is called by the add_symbols phase of |
| 551 | the ELF backend linker. It is called once for each section with |
| 552 | relocs of an object file, just after the symbols for the object |
| 553 | file have been added to the global linker hash table. The |
| 554 | function must look through the relocs and do any special handling |
| 555 | required. This generally means allocating space in the global |
| 556 | offset table, and perhaps allocating space for a reloc. The |
| 557 | relocs are always passed as Rela structures; if the section |
| 558 | actually uses Rel structures, the r_addend field will always be |
| 559 | zero. */ |
| 560 | boolean (*check_relocs) |
| 561 | PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o, |
| 562 | const Elf_Internal_Rela *relocs)); |
| 563 | |
| 564 | /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend |
| 565 | linker for every symbol which is defined by a dynamic object and |
| 566 | referenced by a regular object. This is called after all the |
| 567 | input files have been seen, but before the SIZE_DYNAMIC_SECTIONS |
| 568 | function has been called. The hash table entry should be |
| 569 | bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be |
| 570 | defined in a section from a dynamic object. Dynamic object |
| 571 | sections are not included in the final link, and this function is |
| 572 | responsible for changing the value to something which the rest of |
| 573 | the link can deal with. This will normally involve adding an |
| 574 | entry to the .plt or .got or some such section, and setting the |
| 575 | symbol to point to that. */ |
| 576 | boolean (*elf_backend_adjust_dynamic_symbol) |
| 577 | PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h)); |
| 578 | |
| 579 | /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker |
| 580 | after all the linker input files have been seen but before the |
| 581 | section sizes have been set. This is called after |
| 582 | ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */ |
| 583 | boolean (*elf_backend_always_size_sections) |
| 584 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); |
| 585 | |
| 586 | /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend |
| 587 | linker after all the linker input files have been seen but before |
| 588 | the sections sizes have been set. This is called after |
| 589 | ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols. |
| 590 | It is only called when linking against a dynamic object. It must |
| 591 | set the sizes of the dynamic sections, and may fill in their |
| 592 | contents as well. The generic ELF linker can handle the .dynsym, |
| 593 | .dynstr and .hash sections. This function must handle the |
| 594 | .interp section and any sections created by the |
| 595 | CREATE_DYNAMIC_SECTIONS entry point. */ |
| 596 | boolean (*elf_backend_size_dynamic_sections) |
| 597 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); |
| 598 | |
| 599 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
| 600 | to handle the relocations for a section. |
| 601 | |
| 602 | The relocs are always passed as Rela structures; if the section |
| 603 | actually uses Rel structures, the r_addend field will always be |
| 604 | zero. |
| 605 | |
| 606 | This function is responsible for adjust the section contents as |
| 607 | necessary, and (if using Rela relocs and generating a |
| 608 | relocateable output file) adjusting the reloc addend as |
| 609 | necessary. |
| 610 | |
| 611 | This function does not have to worry about setting the reloc |
| 612 | address or the reloc symbol index. |
| 613 | |
| 614 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 615 | |
| 616 | LOCAL_SECTIONS is an array giving the section in the input file |
| 617 | corresponding to the st_shndx field of each local symbol. |
| 618 | |
| 619 | The global hash table entry for the global symbols can be found |
| 620 | via elf_sym_hashes (input_bfd). |
| 621 | |
| 622 | When generating relocateable output, this function must handle |
| 623 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 624 | going to be the section symbol corresponding to the output |
| 625 | section, which means that the addend must be adjusted |
| 626 | accordingly. */ |
| 627 | boolean (*elf_backend_relocate_section) |
| 628 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info, |
| 629 | bfd *input_bfd, asection *input_section, bfd_byte *contents, |
| 630 | Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms, |
| 631 | asection **local_sections)); |
| 632 | |
| 633 | /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend |
| 634 | linker just before it writes a symbol out to the .dynsym section. |
| 635 | The processor backend may make any required adjustment to the |
| 636 | symbol. It may also take the opportunity to set contents of the |
| 637 | dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on |
| 638 | all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called |
| 639 | on those symbols which are defined by a dynamic object. */ |
| 640 | boolean (*elf_backend_finish_dynamic_symbol) |
| 641 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info, |
| 642 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)); |
| 643 | |
| 644 | /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend |
| 645 | linker just before it writes all the dynamic sections out to the |
| 646 | output file. The FINISH_DYNAMIC_SYMBOL will have been called on |
| 647 | all dynamic symbols. */ |
| 648 | boolean (*elf_backend_finish_dynamic_sections) |
| 649 | PARAMS ((bfd *output_bfd, struct bfd_link_info *info)); |
| 650 | |
| 651 | /* A function to do any beginning processing needed for the ELF file |
| 652 | before building the ELF headers and computing file positions. */ |
| 653 | void (*elf_backend_begin_write_processing) |
| 654 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 655 | |
| 656 | /* A function to do any final processing needed for the ELF file |
| 657 | before writing it out. The LINKER argument is true if this BFD |
| 658 | was created by the ELF backend linker. */ |
| 659 | void (*elf_backend_final_write_processing) |
| 660 | PARAMS ((bfd *, boolean linker)); |
| 661 | |
| 662 | /* This function is called by get_program_header_size. It should |
| 663 | return the number of additional program segments which this BFD |
| 664 | will need. It should return -1 on error. */ |
| 665 | int (*elf_backend_additional_program_headers) |
| 666 | PARAMS ((bfd *)); |
| 667 | |
| 668 | /* This function is called to modify an existing segment map in a |
| 669 | backend specific fashion. */ |
| 670 | boolean (*elf_backend_modify_segment_map) |
| 671 | PARAMS ((bfd *)); |
| 672 | |
| 673 | /* This function is called during section gc to discover the section a |
| 674 | particular relocation refers to. It need not be defined for hosts |
| 675 | that have no queer relocation types. */ |
| 676 | asection * (*gc_mark_hook) |
| 677 | PARAMS ((bfd *abfd, struct bfd_link_info *, Elf_Internal_Rela *, |
| 678 | struct elf_link_hash_entry *h, Elf_Internal_Sym *)); |
| 679 | |
| 680 | /* This function, if defined, is called during the sweep phase of gc |
| 681 | in order that a backend might update any data structures it might |
| 682 | be maintaining. */ |
| 683 | boolean (*gc_sweep_hook) |
| 684 | PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o, |
| 685 | const Elf_Internal_Rela *relocs)); |
| 686 | |
| 687 | /* This function, if defined, is called after the ELF headers have |
| 688 | been created. This allows for things like the OS and ABI versions |
| 689 | to be changed. */ |
| 690 | void (*elf_backend_post_process_headers) |
| 691 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 692 | |
| 693 | /* This function, if defined, prints a symbol to file and returns the |
| 694 | name of the symbol to be printed. It should return NULL to fall |
| 695 | back to default symbol printing. */ |
| 696 | const char *(*elf_backend_print_symbol_all) |
| 697 | PARAMS ((bfd *, PTR, asymbol *)); |
| 698 | |
| 699 | /* This function, if defined, is called after all local symbols and |
| 700 | global symbols converted to locals are emited into the symtab |
| 701 | section. It allows the backend to emit special global symbols |
| 702 | not handled in the hash table. */ |
| 703 | boolean (*elf_backend_output_arch_syms) |
| 704 | PARAMS ((bfd *, struct bfd_link_info *, PTR, |
| 705 | boolean (*) (PTR, const char *, Elf_Internal_Sym *, asection *))); |
| 706 | |
| 707 | /* Copy any information related to dynamic linking from a pre-existing |
| 708 | symbol to a newly created symbol. Also called to copy flags and |
| 709 | other back-end info to a weakdef, in which case the symbol is not |
| 710 | newly created and plt/got refcounts and dynamic indices should not |
| 711 | be copied. */ |
| 712 | void (*elf_backend_copy_indirect_symbol) |
| 713 | PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *)); |
| 714 | |
| 715 | /* Modify any information related to dynamic linking such that the |
| 716 | symbol is not exported. */ |
| 717 | void (*elf_backend_hide_symbol) |
| 718 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean)); |
| 719 | |
| 720 | /* Emit relocations. Overrides default routine for emitting relocs, |
| 721 | except during a relocatable link, or if all relocs are being emitted. */ |
| 722 | boolean (*elf_backend_emit_relocs) |
| 723 | PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *)); |
| 724 | |
| 725 | /* Count relocations. Not called for relocatable links |
| 726 | or if all relocs are being preserved in the output. */ |
| 727 | unsigned int (*elf_backend_count_relocs) |
| 728 | PARAMS ((asection *, Elf_Internal_Rela *)); |
| 729 | |
| 730 | /* This function, if defined, is called when an NT_PRSTATUS note is found |
| 731 | in a core file. */ |
| 732 | boolean (*elf_backend_grok_prstatus) |
| 733 | PARAMS ((bfd *, Elf_Internal_Note *)); |
| 734 | |
| 735 | /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO |
| 736 | note is found in a core file. */ |
| 737 | boolean (*elf_backend_grok_psinfo) |
| 738 | PARAMS ((bfd *, Elf_Internal_Note *)); |
| 739 | |
| 740 | /* Functions to print VMAs. Special code to handle 64 bit ELF files. */ |
| 741 | void (* elf_backend_sprintf_vma) |
| 742 | PARAMS ((bfd *, char *, bfd_vma)); |
| 743 | void (* elf_backend_fprintf_vma) |
| 744 | PARAMS ((bfd *, PTR, bfd_vma)); |
| 745 | |
| 746 | /* This function returns class of a reloc type. */ |
| 747 | enum elf_reloc_type_class (*elf_backend_reloc_type_class) |
| 748 | PARAMS ((const Elf_Internal_Rela *)); |
| 749 | |
| 750 | /* This function, if defined, removes information about discarded functions |
| 751 | from other sections which mention them. */ |
| 752 | boolean (*elf_backend_discard_info) |
| 753 | PARAMS ((bfd *, struct elf_reloc_cookie *, struct bfd_link_info *)); |
| 754 | |
| 755 | /* This function, if defined, signals that the function above has removed |
| 756 | the discarded relocations for this section. */ |
| 757 | boolean (*elf_backend_ignore_discarded_relocs) |
| 758 | PARAMS ((asection *)); |
| 759 | |
| 760 | /* This function, if defined, may write out the given section. |
| 761 | Returns true if it did so and false if the caller should. */ |
| 762 | boolean (*elf_backend_write_section) |
| 763 | PARAMS ((bfd *, asection *, bfd_byte *)); |
| 764 | |
| 765 | /* This function, if defined, sets up the file positions for non PT_LOAD |
| 766 | segments, especially for segments containing non-allocated sections. */ |
| 767 | void (*set_nonloadable_filepos) |
| 768 | PARAMS ((bfd *, Elf_Internal_Phdr *)); |
| 769 | |
| 770 | /* This function, if defined, returns true if the section is contained |
| 771 | within the segment. File positions are compared. */ |
| 772 | boolean (*is_contained_by_filepos) |
| 773 | PARAMS ((asection *, Elf_Internal_Phdr *)); |
| 774 | |
| 775 | /* This function, if defined, returns true if copy_private_bfd_data |
| 776 | should be called. It provides a way of overriding default |
| 777 | test conditions in _bfd_elf_copy_private_section_data. */ |
| 778 | boolean (*copy_private_bfd_data_p) |
| 779 | PARAMS ((bfd *, asection *, bfd *, asection *)); |
| 780 | |
| 781 | /* The level of IRIX compatibility we're striving for. |
| 782 | MIPS ELF specific function. */ |
| 783 | irix_compat_t (*elf_backend_mips_irix_compat) |
| 784 | PARAMS ((bfd *)); |
| 785 | |
| 786 | reloc_howto_type *(*elf_backend_mips_rtype_to_howto) |
| 787 | PARAMS ((unsigned int, boolean)); |
| 788 | |
| 789 | /* The swapping table to use when dealing with ECOFF information. |
| 790 | Used for the MIPS ELF .mdebug section. */ |
| 791 | const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap; |
| 792 | |
| 793 | /* Alternate EM_xxxx machine codes for this backend. */ |
| 794 | int elf_machine_alt1; |
| 795 | int elf_machine_alt2; |
| 796 | |
| 797 | const struct elf_size_info *s; |
| 798 | |
| 799 | /* offset of the _GLOBAL_OFFSET_TABLE_ symbol from the start of the |
| 800 | .got section */ |
| 801 | bfd_vma got_symbol_offset; |
| 802 | |
| 803 | /* The size in bytes of the headers for the GOT and PLT. This includes |
| 804 | the so-called reserved entries on some systems. */ |
| 805 | bfd_vma got_header_size; |
| 806 | bfd_vma plt_header_size; |
| 807 | |
| 808 | /* This is true if the linker should act like collect and gather |
| 809 | global constructors and destructors by name. This is true for |
| 810 | MIPS ELF because the Irix 5 tools can not handle the .init |
| 811 | section. */ |
| 812 | unsigned collect : 1; |
| 813 | |
| 814 | /* This is true if the linker should ignore changes to the type of a |
| 815 | symbol. This is true for MIPS ELF because some Irix 5 objects |
| 816 | record undefined functions as STT_OBJECT although the definitions |
| 817 | are STT_FUNC. */ |
| 818 | unsigned type_change_ok : 1; |
| 819 | |
| 820 | /* Whether the backend may use REL relocations. (Some backends use |
| 821 | both REL and RELA relocations, and this flag is set for those |
| 822 | backends.) */ |
| 823 | unsigned may_use_rel_p : 1; |
| 824 | |
| 825 | /* Whether the backend may use RELA relocations. (Some backends use |
| 826 | both REL and RELA relocations, and this flag is set for those |
| 827 | backends.) */ |
| 828 | unsigned may_use_rela_p : 1; |
| 829 | |
| 830 | /* Whether the default relocation type is RELA. If a backend with |
| 831 | this flag set wants REL relocations for a particular section, |
| 832 | it must note that explicitly. Similarly, if this flag is clear, |
| 833 | and the backend wants RELA relocations for a particular |
| 834 | section. */ |
| 835 | unsigned default_use_rela_p : 1; |
| 836 | |
| 837 | /* Set if RELA relocations for a relocatable link can be handled by |
| 838 | generic code. Backends that set this flag need do nothing in the |
| 839 | backend relocate_section routine for relocatable linking. */ |
| 840 | unsigned rela_normal : 1; |
| 841 | |
| 842 | /* True if addresses "naturally" sign extend. This is used when |
| 843 | swapping in from Elf32 when BFD64. */ |
| 844 | unsigned sign_extend_vma : 1; |
| 845 | |
| 846 | unsigned want_got_plt : 1; |
| 847 | unsigned plt_readonly : 1; |
| 848 | unsigned want_plt_sym : 1; |
| 849 | unsigned plt_not_loaded : 1; |
| 850 | unsigned plt_alignment : 4; |
| 851 | unsigned can_gc_sections : 1; |
| 852 | unsigned can_refcount : 1; |
| 853 | unsigned want_got_sym : 1; |
| 854 | unsigned want_dynbss : 1; |
| 855 | }; |
| 856 | |
| 857 | /* Information stored for each BFD section in an ELF file. This |
| 858 | structure is allocated by elf_new_section_hook. */ |
| 859 | |
| 860 | struct bfd_elf_section_data |
| 861 | { |
| 862 | /* The ELF header for this section. */ |
| 863 | Elf_Internal_Shdr this_hdr; |
| 864 | |
| 865 | /* The ELF header for the reloc section associated with this |
| 866 | section, if any. */ |
| 867 | Elf_Internal_Shdr rel_hdr; |
| 868 | |
| 869 | /* If there is a second reloc section associated with this section, |
| 870 | as can happen on Irix 6, this field points to the header. */ |
| 871 | Elf_Internal_Shdr *rel_hdr2; |
| 872 | |
| 873 | /* The number of relocations currently assigned to REL_HDR. */ |
| 874 | unsigned int rel_count; |
| 875 | |
| 876 | /* The number of relocations currently assigned to REL_HDR2. */ |
| 877 | unsigned int rel_count2; |
| 878 | |
| 879 | /* A pointer to a linked list tracking dynamic relocs copied for |
| 880 | local symbols. */ |
| 881 | PTR local_dynrel; |
| 882 | |
| 883 | /* A pointer to the bfd section used for dynamic relocs. */ |
| 884 | asection *sreloc; |
| 885 | |
| 886 | /* The ELF section number of this section. Only used for an output |
| 887 | file. */ |
| 888 | int this_idx; |
| 889 | |
| 890 | /* The ELF section number of the reloc section indicated by |
| 891 | REL_HDR if any. Only used for an output file. */ |
| 892 | int rel_idx; |
| 893 | |
| 894 | /* The ELF section number of the reloc section indicated by |
| 895 | REL_HDR2 if any. Only used for an output file. */ |
| 896 | int rel_idx2; |
| 897 | |
| 898 | /* Used by the backend linker to store the symbol hash table entries |
| 899 | associated with relocs against global symbols. */ |
| 900 | struct elf_link_hash_entry **rel_hashes; |
| 901 | |
| 902 | /* A pointer to the swapped relocs. If the section uses REL relocs, |
| 903 | rather than RELA, all the r_addend fields will be zero. This |
| 904 | pointer may be NULL. It is used by the backend linker. */ |
| 905 | Elf_Internal_Rela *relocs; |
| 906 | |
| 907 | /* Used by the backend linker when generating a shared library to |
| 908 | record the dynamic symbol index for a section symbol |
| 909 | corresponding to this section. A value of 0 means that there is |
| 910 | no dynamic symbol for this section. */ |
| 911 | long dynindx; |
| 912 | |
| 913 | /* A pointer used for various section optimizations. */ |
| 914 | PTR sec_info; |
| 915 | |
| 916 | /* Type of that information. */ |
| 917 | enum elf_link_info_type sec_info_type; |
| 918 | |
| 919 | /* Group name, if this section is part of a group. */ |
| 920 | const char *group_name; |
| 921 | |
| 922 | /* A linked list of sections in the group. Circular when used by |
| 923 | the linker. */ |
| 924 | asection *next_in_group; |
| 925 | |
| 926 | /* A pointer available for the processor specific ELF backend. */ |
| 927 | PTR tdata; |
| 928 | |
| 929 | /* Nonzero if this section uses RELA relocations, rather than REL. */ |
| 930 | unsigned int use_rela_p:1; |
| 931 | |
| 932 | /* Nonzero when a group is COMDAT. */ |
| 933 | unsigned int linkonce_p:1; |
| 934 | }; |
| 935 | |
| 936 | #define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd) |
| 937 | #define elf_group_name(sec) (elf_section_data(sec)->group_name) |
| 938 | #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group) |
| 939 | #define elf_linkonce_p(sec) (elf_section_data(sec)->linkonce_p) |
| 940 | |
| 941 | /* Return true if section has been discarded. */ |
| 942 | #define elf_discarded_section(sec) \ |
| 943 | (!bfd_is_abs_section(sec) \ |
| 944 | && bfd_is_abs_section((sec)->output_section) \ |
| 945 | && elf_section_data (sec)->sec_info_type != ELF_INFO_TYPE_MERGE \ |
| 946 | && elf_section_data (sec)->sec_info_type != ELF_INFO_TYPE_JUST_SYMS) |
| 947 | |
| 948 | #define get_elf_backend_data(abfd) \ |
| 949 | ((struct elf_backend_data *) (abfd)->xvec->backend_data) |
| 950 | |
| 951 | /* Enumeration to specify the special section. */ |
| 952 | typedef enum elf_linker_section_enum |
| 953 | { |
| 954 | LINKER_SECTION_UNKNOWN, /* not used */ |
| 955 | LINKER_SECTION_GOT, /* .got section for global offset pointers */ |
| 956 | LINKER_SECTION_PLT, /* .plt section for generated procedure stubs */ |
| 957 | LINKER_SECTION_SDATA, /* .sdata/.sbss section for PowerPC */ |
| 958 | LINKER_SECTION_SDATA2, /* .sdata2/.sbss2 section for PowerPC */ |
| 959 | LINKER_SECTION_MAX /* # of linker sections */ |
| 960 | } elf_linker_section_enum_t; |
| 961 | |
| 962 | /* Sections created by the linker. */ |
| 963 | |
| 964 | typedef struct elf_linker_section |
| 965 | { |
| 966 | char *name; /* name of the section */ |
| 967 | char *rel_name; /* name of the associated .rel{,a}. section */ |
| 968 | char *bss_name; /* name of a related .bss section */ |
| 969 | char *sym_name; /* name of symbol to reference this section */ |
| 970 | asection *section; /* pointer to the section */ |
| 971 | asection *bss_section; /* pointer to the bss section associated with this */ |
| 972 | asection *rel_section; /* pointer to the relocations needed for this section */ |
| 973 | struct elf_link_hash_entry *sym_hash; /* pointer to the created symbol hash value */ |
| 974 | bfd_vma initial_size; /* initial size before any linker generated allocations */ |
| 975 | bfd_vma sym_offset; /* offset of symbol from beginning of section */ |
| 976 | bfd_vma hole_size; /* size of reserved address hole in allocation */ |
| 977 | bfd_vma hole_offset; /* current offset for the hole */ |
| 978 | bfd_vma max_hole_offset; /* maximum offset for the hole */ |
| 979 | elf_linker_section_enum_t which; /* which section this is */ |
| 980 | boolean hole_written_p; /* whether the hole has been initialized */ |
| 981 | unsigned int alignment; /* alignment for the section */ |
| 982 | flagword flags; /* flags to use to create the section */ |
| 983 | } elf_linker_section_t; |
| 984 | |
| 985 | /* Linked list of allocated pointer entries. This hangs off of the symbol lists, and |
| 986 | provides allows us to return different pointers, based on different addend's. */ |
| 987 | |
| 988 | typedef struct elf_linker_section_pointers |
| 989 | { |
| 990 | struct elf_linker_section_pointers *next; /* next allocated pointer for this symbol */ |
| 991 | bfd_vma offset; /* offset of pointer from beginning of section */ |
| 992 | bfd_vma addend; /* addend used */ |
| 993 | elf_linker_section_enum_t which; /* which linker section this is */ |
| 994 | boolean written_address_p; /* whether address was written yet */ |
| 995 | } elf_linker_section_pointers_t; |
| 996 | |
| 997 | /* Some private data is stashed away for future use using the tdata pointer |
| 998 | in the bfd structure. */ |
| 999 | |
| 1000 | struct elf_obj_tdata |
| 1001 | { |
| 1002 | Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */ |
| 1003 | Elf_Internal_Shdr **elf_sect_ptr; |
| 1004 | Elf_Internal_Phdr *phdr; |
| 1005 | struct elf_segment_map *segment_map; |
| 1006 | struct elf_strtab_hash *strtab_ptr; |
| 1007 | int num_locals; |
| 1008 | int num_globals; |
| 1009 | unsigned int num_elf_sections; /* elf_sect_ptr size */ |
| 1010 | int num_section_syms; |
| 1011 | asymbol **section_syms; /* STT_SECTION symbols for each section */ |
| 1012 | Elf_Internal_Shdr symtab_hdr; |
| 1013 | Elf_Internal_Shdr shstrtab_hdr; |
| 1014 | Elf_Internal_Shdr strtab_hdr; |
| 1015 | Elf_Internal_Shdr dynsymtab_hdr; |
| 1016 | Elf_Internal_Shdr dynstrtab_hdr; |
| 1017 | Elf_Internal_Shdr dynversym_hdr; |
| 1018 | Elf_Internal_Shdr dynverref_hdr; |
| 1019 | Elf_Internal_Shdr dynverdef_hdr; |
| 1020 | Elf_Internal_Shdr symtab_shndx_hdr; |
| 1021 | unsigned int symtab_section, shstrtab_section; |
| 1022 | unsigned int strtab_section, dynsymtab_section; |
| 1023 | unsigned int symtab_shndx_section; |
| 1024 | unsigned int dynversym_section, dynverdef_section, dynverref_section; |
| 1025 | file_ptr next_file_pos; |
| 1026 | #if 0 |
| 1027 | /* we don't need these inside bfd anymore, and I think |
| 1028 | these weren't used outside bfd. */ |
| 1029 | void *prstatus; /* The raw /proc prstatus structure */ |
| 1030 | void *prpsinfo; /* The raw /proc prpsinfo structure */ |
| 1031 | #endif |
| 1032 | bfd_vma gp; /* The gp value */ |
| 1033 | unsigned int gp_size; /* The gp size */ |
| 1034 | |
| 1035 | Elf_Internal_Shdr **group_sect_ptr; |
| 1036 | int num_group; |
| 1037 | |
| 1038 | /* Information grabbed from an elf core file. */ |
| 1039 | int core_signal; |
| 1040 | int core_pid; |
| 1041 | int core_lwpid; |
| 1042 | char* core_program; |
| 1043 | char* core_command; |
| 1044 | |
| 1045 | /* This is set to true if the object was created by the backend |
| 1046 | linker. */ |
| 1047 | boolean linker; |
| 1048 | |
| 1049 | /* A mapping from external symbols to entries in the linker hash |
| 1050 | table, used when linking. This is indexed by the symbol index |
| 1051 | minus the sh_info field of the symbol table header. */ |
| 1052 | struct elf_link_hash_entry **sym_hashes; |
| 1053 | |
| 1054 | /* A mapping from local symbols to offsets into the global offset |
| 1055 | table, used when linking. This is indexed by the symbol index. |
| 1056 | Like for the globals, we use a union and two names primarily to |
| 1057 | document the intent of any particular piece of code. The field |
| 1058 | should be used as a count until size_dynamic_sections, at which |
| 1059 | point the contents of the .got is fixed. Afterward, if an entry |
| 1060 | is -1, then the symbol does not require a global offset table entry. */ |
| 1061 | union |
| 1062 | { |
| 1063 | bfd_signed_vma *refcounts; |
| 1064 | bfd_vma *offsets; |
| 1065 | } local_got; |
| 1066 | |
| 1067 | /* A mapping from local symbols to offsets into the various linker |
| 1068 | sections added. This is index by the symbol index. */ |
| 1069 | elf_linker_section_pointers_t **linker_section_pointers; |
| 1070 | |
| 1071 | /* The linker ELF emulation code needs to let the backend ELF linker |
| 1072 | know what filename should be used for a dynamic object if the |
| 1073 | dynamic object is found using a search. The emulation code then |
| 1074 | sometimes needs to know what name was actually used. Until the |
| 1075 | file has been added to the linker symbol table, this field holds |
| 1076 | the name the linker wants. After it has been added, it holds the |
| 1077 | name actually used, which will be the DT_SONAME entry if there is |
| 1078 | one. */ |
| 1079 | const char *dt_name; |
| 1080 | |
| 1081 | /* When a reference in a regular object is resolved by a shared |
| 1082 | object is loaded into via the DT_NEEDED entries by the linker |
| 1083 | ELF emulation code, we need to add the shared object to the |
| 1084 | DT_NEEDED list of the resulting binary to indicate the dependency |
| 1085 | as if the -l option is passed to the linker. This field holds the |
| 1086 | name of the loaded shared object. */ |
| 1087 | const char *dt_soname; |
| 1088 | |
| 1089 | /* Irix 5 often screws up the symbol table, sorting local symbols |
| 1090 | after global symbols. This flag is set if the symbol table in |
| 1091 | this BFD appears to be screwed up. If it is, we ignore the |
| 1092 | sh_info field in the symbol table header, and always read all the |
| 1093 | symbols. */ |
| 1094 | boolean bad_symtab; |
| 1095 | |
| 1096 | /* Records the result of `get_program_header_size'. */ |
| 1097 | bfd_size_type program_header_size; |
| 1098 | |
| 1099 | /* Used by find_nearest_line entry point. */ |
| 1100 | PTR line_info; |
| 1101 | |
| 1102 | /* Used by MIPS ELF find_nearest_line entry point. The structure |
| 1103 | could be included directly in this one, but there's no point to |
| 1104 | wasting the memory just for the infrequently called |
| 1105 | find_nearest_line. */ |
| 1106 | struct mips_elf_find_line *find_line_info; |
| 1107 | |
| 1108 | /* A place to stash dwarf1 info for this bfd. */ |
| 1109 | struct dwarf1_debug *dwarf1_find_line_info; |
| 1110 | |
| 1111 | /* A place to stash dwarf2 info for this bfd. */ |
| 1112 | PTR dwarf2_find_line_info; |
| 1113 | |
| 1114 | /* An array of stub sections indexed by symbol number, used by the |
| 1115 | MIPS ELF linker. FIXME: We should figure out some way to only |
| 1116 | include this field for a MIPS ELF target. */ |
| 1117 | asection **local_stubs; |
| 1118 | |
| 1119 | /* Used to determine if the e_flags field has been initialized */ |
| 1120 | boolean flags_init; |
| 1121 | |
| 1122 | /* Used to determine if PT_GNU_EH_FRAME segment header should be |
| 1123 | created. */ |
| 1124 | boolean eh_frame_hdr; |
| 1125 | |
| 1126 | /* Number of symbol version definitions we are about to emit. */ |
| 1127 | unsigned int cverdefs; |
| 1128 | |
| 1129 | /* Number of symbol version references we are about to emit. */ |
| 1130 | unsigned int cverrefs; |
| 1131 | |
| 1132 | /* Symbol version definitions in external objects. */ |
| 1133 | Elf_Internal_Verdef *verdef; |
| 1134 | |
| 1135 | /* Symbol version references to external objects. */ |
| 1136 | Elf_Internal_Verneed *verref; |
| 1137 | |
| 1138 | /* Linker sections that we are interested in. */ |
| 1139 | struct elf_linker_section *linker_section[ (int)LINKER_SECTION_MAX ]; |
| 1140 | |
| 1141 | /* The Irix 5 support uses two virtual sections, which represent |
| 1142 | text/data symbols defined in dynamic objects. */ |
| 1143 | asymbol *elf_data_symbol; |
| 1144 | asymbol *elf_text_symbol; |
| 1145 | asection *elf_data_section; |
| 1146 | asection *elf_text_section; |
| 1147 | }; |
| 1148 | |
| 1149 | #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) |
| 1150 | #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header) |
| 1151 | #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr) |
| 1152 | #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections) |
| 1153 | #define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr) |
| 1154 | #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section) |
| 1155 | #define elf_symtab_shndx(bfd) (elf_tdata(bfd) -> symtab_shndx_section) |
| 1156 | #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section) |
| 1157 | #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section) |
| 1158 | #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section) |
| 1159 | #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section) |
| 1160 | #define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals) |
| 1161 | #define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals) |
| 1162 | #define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms) |
| 1163 | #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> num_section_syms) |
| 1164 | #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo) |
| 1165 | #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus) |
| 1166 | #define elf_gp(bfd) (elf_tdata(bfd) -> gp) |
| 1167 | #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size) |
| 1168 | #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes) |
| 1169 | #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts) |
| 1170 | #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets) |
| 1171 | #define elf_local_ptr_offsets(bfd) (elf_tdata(bfd) -> linker_section_pointers) |
| 1172 | #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name) |
| 1173 | #define elf_dt_soname(bfd) (elf_tdata(bfd) -> dt_soname) |
| 1174 | #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab) |
| 1175 | #define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init) |
| 1176 | #define elf_linker_section(bfd,n) (elf_tdata(bfd) -> linker_section[(int)n]) |
| 1177 | \f |
| 1178 | extern void _bfd_elf_swap_verdef_in |
| 1179 | PARAMS ((bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *)); |
| 1180 | extern void _bfd_elf_swap_verdef_out |
| 1181 | PARAMS ((bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *)); |
| 1182 | extern void _bfd_elf_swap_verdaux_in |
| 1183 | PARAMS ((bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *)); |
| 1184 | extern void _bfd_elf_swap_verdaux_out |
| 1185 | PARAMS ((bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *)); |
| 1186 | extern void _bfd_elf_swap_verneed_in |
| 1187 | PARAMS ((bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *)); |
| 1188 | extern void _bfd_elf_swap_verneed_out |
| 1189 | PARAMS ((bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *)); |
| 1190 | extern void _bfd_elf_swap_vernaux_in |
| 1191 | PARAMS ((bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *)); |
| 1192 | extern void _bfd_elf_swap_vernaux_out |
| 1193 | PARAMS ((bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *)); |
| 1194 | extern void _bfd_elf_swap_versym_in |
| 1195 | PARAMS ((bfd *, const Elf_External_Versym *, Elf_Internal_Versym *)); |
| 1196 | extern void _bfd_elf_swap_versym_out |
| 1197 | PARAMS ((bfd *, const Elf_Internal_Versym *, Elf_External_Versym *)); |
| 1198 | |
| 1199 | extern int _bfd_elf_section_from_bfd_section |
| 1200 | PARAMS ((bfd *, asection *)); |
| 1201 | extern char *bfd_elf_string_from_elf_section |
| 1202 | PARAMS ((bfd *, unsigned, unsigned)); |
| 1203 | extern char *bfd_elf_get_str_section |
| 1204 | PARAMS ((bfd *, unsigned)); |
| 1205 | |
| 1206 | extern boolean _bfd_elf_copy_private_bfd_data |
| 1207 | PARAMS ((bfd *, bfd *)); |
| 1208 | extern boolean _bfd_elf_print_private_bfd_data |
| 1209 | PARAMS ((bfd *, PTR)); |
| 1210 | extern void bfd_elf_print_symbol |
| 1211 | PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type)); |
| 1212 | |
| 1213 | #define elf_string_from_elf_strtab(abfd, strindex) \ |
| 1214 | bfd_elf_string_from_elf_section(abfd, elf_elfheader(abfd)->e_shstrndx, \ |
| 1215 | strindex) |
| 1216 | |
| 1217 | #define bfd_elf32_print_symbol bfd_elf_print_symbol |
| 1218 | #define bfd_elf64_print_symbol bfd_elf_print_symbol |
| 1219 | |
| 1220 | extern void _bfd_elf_sprintf_vma |
| 1221 | PARAMS ((bfd *, char *, bfd_vma)); |
| 1222 | extern void _bfd_elf_fprintf_vma |
| 1223 | PARAMS ((bfd *, PTR, bfd_vma)); |
| 1224 | |
| 1225 | extern enum elf_reloc_type_class _bfd_elf_reloc_type_class |
| 1226 | PARAMS ((const Elf_Internal_Rela *)); |
| 1227 | extern bfd_vma _bfd_elf_rela_local_sym |
| 1228 | PARAMS ((bfd *, Elf_Internal_Sym *, asection *, Elf_Internal_Rela *)); |
| 1229 | extern bfd_vma _bfd_elf_rel_local_sym |
| 1230 | PARAMS ((bfd *, Elf_Internal_Sym *, asection **, bfd_vma)); |
| 1231 | extern bfd_vma _bfd_elf_section_offset |
| 1232 | PARAMS ((bfd *, struct bfd_link_info *, asection *, bfd_vma)); |
| 1233 | |
| 1234 | extern unsigned long bfd_elf_hash |
| 1235 | PARAMS ((const char *)); |
| 1236 | |
| 1237 | extern bfd_reloc_status_type bfd_elf_generic_reloc |
| 1238 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 1239 | extern boolean bfd_elf_mkobject |
| 1240 | PARAMS ((bfd *)); |
| 1241 | extern boolean bfd_elf_mkcorefile |
| 1242 | PARAMS ((bfd *)); |
| 1243 | extern Elf_Internal_Shdr *bfd_elf_find_section |
| 1244 | PARAMS ((bfd *, char *)); |
| 1245 | extern boolean _bfd_elf_make_section_from_shdr |
| 1246 | PARAMS ((bfd *, Elf_Internal_Shdr *, const char *)); |
| 1247 | extern boolean _bfd_elf_make_section_from_phdr |
| 1248 | PARAMS ((bfd *, Elf_Internal_Phdr *, int, const char *)); |
| 1249 | extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc |
| 1250 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| 1251 | extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create |
| 1252 | PARAMS ((bfd *)); |
| 1253 | extern void _bfd_elf_link_hash_copy_indirect |
| 1254 | PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *)); |
| 1255 | extern void _bfd_elf_link_hash_hide_symbol |
| 1256 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean)); |
| 1257 | extern boolean _bfd_elf_link_hash_table_init |
| 1258 | PARAMS ((struct elf_link_hash_table *, bfd *, |
| 1259 | struct bfd_hash_entry *(*) (struct bfd_hash_entry *, |
| 1260 | struct bfd_hash_table *, |
| 1261 | const char *))); |
| 1262 | extern boolean _bfd_elf_slurp_version_tables |
| 1263 | PARAMS ((bfd *)); |
| 1264 | extern boolean _bfd_elf_merge_sections |
| 1265 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1266 | extern boolean bfd_elf_discard_group |
| 1267 | PARAMS ((bfd *, struct sec *)); |
| 1268 | extern void _bfd_elf_link_just_syms |
| 1269 | PARAMS ((asection *, struct bfd_link_info *)); |
| 1270 | extern boolean _bfd_elf_copy_private_symbol_data |
| 1271 | PARAMS ((bfd *, asymbol *, bfd *, asymbol *)); |
| 1272 | extern boolean _bfd_elf_copy_private_section_data |
| 1273 | PARAMS ((bfd *, asection *, bfd *, asection *)); |
| 1274 | extern boolean _bfd_elf_write_object_contents |
| 1275 | PARAMS ((bfd *)); |
| 1276 | extern boolean _bfd_elf_write_corefile_contents |
| 1277 | PARAMS ((bfd *)); |
| 1278 | extern boolean _bfd_elf_set_section_contents |
| 1279 | PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type)); |
| 1280 | extern long _bfd_elf_get_symtab_upper_bound |
| 1281 | PARAMS ((bfd *)); |
| 1282 | extern long _bfd_elf_get_symtab |
| 1283 | PARAMS ((bfd *, asymbol **)); |
| 1284 | extern long _bfd_elf_get_dynamic_symtab_upper_bound |
| 1285 | PARAMS ((bfd *)); |
| 1286 | extern long _bfd_elf_canonicalize_dynamic_symtab |
| 1287 | PARAMS ((bfd *, asymbol **)); |
| 1288 | extern long _bfd_elf_get_reloc_upper_bound |
| 1289 | PARAMS ((bfd *, sec_ptr)); |
| 1290 | extern long _bfd_elf_canonicalize_reloc |
| 1291 | PARAMS ((bfd *, sec_ptr, arelent **, asymbol **)); |
| 1292 | extern long _bfd_elf_get_dynamic_reloc_upper_bound |
| 1293 | PARAMS ((bfd *)); |
| 1294 | extern long _bfd_elf_canonicalize_dynamic_reloc |
| 1295 | PARAMS ((bfd *, arelent **, asymbol **)); |
| 1296 | extern asymbol *_bfd_elf_make_empty_symbol |
| 1297 | PARAMS ((bfd *)); |
| 1298 | extern void _bfd_elf_get_symbol_info |
| 1299 | PARAMS ((bfd *, asymbol *, symbol_info *)); |
| 1300 | extern boolean _bfd_elf_is_local_label_name |
| 1301 | PARAMS ((bfd *, const char *)); |
| 1302 | extern alent *_bfd_elf_get_lineno |
| 1303 | PARAMS ((bfd *, asymbol *)); |
| 1304 | extern boolean _bfd_elf_set_arch_mach |
| 1305 | PARAMS ((bfd *, enum bfd_architecture, unsigned long)); |
| 1306 | extern boolean _bfd_elf_find_nearest_line |
| 1307 | PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **, |
| 1308 | const char **, unsigned int *)); |
| 1309 | #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols |
| 1310 | #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
| 1311 | extern int _bfd_elf_sizeof_headers |
| 1312 | PARAMS ((bfd *, boolean)); |
| 1313 | extern boolean _bfd_elf_new_section_hook |
| 1314 | PARAMS ((bfd *, asection *)); |
| 1315 | extern boolean _bfd_elf_init_reloc_shdr |
| 1316 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *, boolean)); |
| 1317 | |
| 1318 | /* If the target doesn't have reloc handling written yet: */ |
| 1319 | extern void _bfd_elf_no_info_to_howto |
| 1320 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
| 1321 | |
| 1322 | extern boolean bfd_section_from_shdr |
| 1323 | PARAMS ((bfd *, unsigned int shindex)); |
| 1324 | extern boolean bfd_section_from_phdr |
| 1325 | PARAMS ((bfd *, Elf_Internal_Phdr *, int)); |
| 1326 | |
| 1327 | extern int _bfd_elf_symbol_from_bfd_symbol |
| 1328 | PARAMS ((bfd *, asymbol **)); |
| 1329 | |
| 1330 | extern asection *bfd_section_from_r_symndx |
| 1331 | PARAMS ((bfd *, struct sym_sec_cache *, asection *, unsigned long)); |
| 1332 | extern asection *bfd_section_from_elf_index |
| 1333 | PARAMS ((bfd *, unsigned int)); |
| 1334 | extern boolean _bfd_elf_create_dynamic_sections |
| 1335 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1336 | extern struct bfd_strtab_hash *_bfd_elf_stringtab_init |
| 1337 | PARAMS ((void)); |
| 1338 | |
| 1339 | extern struct elf_strtab_hash * _bfd_elf_strtab_init |
| 1340 | PARAMS ((void)); |
| 1341 | extern void _bfd_elf_strtab_free |
| 1342 | PARAMS ((struct elf_strtab_hash *)); |
| 1343 | extern bfd_size_type _bfd_elf_strtab_add |
| 1344 | PARAMS ((struct elf_strtab_hash *, const char *, boolean)); |
| 1345 | extern void _bfd_elf_strtab_addref |
| 1346 | PARAMS ((struct elf_strtab_hash *, bfd_size_type)); |
| 1347 | extern void _bfd_elf_strtab_delref |
| 1348 | PARAMS ((struct elf_strtab_hash *, bfd_size_type)); |
| 1349 | extern void _bfd_elf_strtab_clear_all_refs |
| 1350 | PARAMS ((struct elf_strtab_hash *)); |
| 1351 | extern bfd_size_type _bfd_elf_strtab_size |
| 1352 | PARAMS ((struct elf_strtab_hash *)); |
| 1353 | extern bfd_size_type _bfd_elf_strtab_offset |
| 1354 | PARAMS ((struct elf_strtab_hash *, bfd_size_type)); |
| 1355 | extern boolean _bfd_elf_strtab_emit |
| 1356 | PARAMS ((bfd *, struct elf_strtab_hash *)); |
| 1357 | extern void _bfd_elf_strtab_finalize |
| 1358 | PARAMS ((struct elf_strtab_hash *)); |
| 1359 | |
| 1360 | extern boolean _bfd_elf_discard_section_eh_frame |
| 1361 | PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *, |
| 1362 | boolean (*) (bfd_vma, PTR), struct elf_reloc_cookie *)); |
| 1363 | extern boolean _bfd_elf_discard_section_eh_frame_hdr |
| 1364 | PARAMS ((bfd *, struct bfd_link_info *, asection *)); |
| 1365 | extern bfd_vma _bfd_elf_eh_frame_section_offset |
| 1366 | PARAMS ((bfd *, asection *, bfd_vma)); |
| 1367 | extern boolean _bfd_elf_write_section_eh_frame |
| 1368 | PARAMS ((bfd *, asection *, asection *, bfd_byte *)); |
| 1369 | extern boolean _bfd_elf_write_section_eh_frame_hdr |
| 1370 | PARAMS ((bfd *, asection *)); |
| 1371 | extern boolean _bfd_elf_maybe_strip_eh_frame_hdr |
| 1372 | PARAMS ((struct bfd_link_info *)); |
| 1373 | |
| 1374 | extern boolean _bfd_elf_link_record_dynamic_symbol |
| 1375 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
| 1376 | extern long _bfd_elf_link_lookup_local_dynindx |
| 1377 | PARAMS ((struct bfd_link_info *, bfd *, long)); |
| 1378 | extern boolean _bfd_elf_compute_section_file_positions |
| 1379 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1380 | extern void _bfd_elf_assign_file_positions_for_relocs |
| 1381 | PARAMS ((bfd *)); |
| 1382 | extern file_ptr _bfd_elf_assign_file_position_for_section |
| 1383 | PARAMS ((Elf_Internal_Shdr *, file_ptr, boolean)); |
| 1384 | |
| 1385 | extern boolean _bfd_elf_validate_reloc |
| 1386 | PARAMS ((bfd *, arelent *)); |
| 1387 | |
| 1388 | extern boolean _bfd_elf_create_dynamic_sections |
| 1389 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1390 | extern boolean _bfd_elf_create_got_section |
| 1391 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1392 | extern unsigned long _bfd_elf_link_renumber_dynsyms |
| 1393 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1394 | |
| 1395 | extern boolean _bfd_elfcore_make_pseudosection |
| 1396 | PARAMS ((bfd *, char *, size_t, ufile_ptr)); |
| 1397 | extern char *_bfd_elfcore_strndup |
| 1398 | PARAMS ((bfd *, char *, size_t)); |
| 1399 | |
| 1400 | extern elf_linker_section_t *_bfd_elf_create_linker_section |
| 1401 | PARAMS ((bfd *, struct bfd_link_info *, enum elf_linker_section_enum, |
| 1402 | elf_linker_section_t *)); |
| 1403 | |
| 1404 | extern elf_linker_section_pointers_t *_bfd_elf_find_pointer_linker_section |
| 1405 | PARAMS ((elf_linker_section_pointers_t *, bfd_vma, |
| 1406 | elf_linker_section_enum_t)); |
| 1407 | |
| 1408 | extern boolean bfd_elf32_create_pointer_linker_section |
| 1409 | PARAMS ((bfd *, struct bfd_link_info *, elf_linker_section_t *, |
| 1410 | struct elf_link_hash_entry *, const Elf32_Internal_Rela *)); |
| 1411 | |
| 1412 | extern bfd_vma bfd_elf32_finish_pointer_linker_section |
| 1413 | PARAMS ((bfd *, bfd *, struct bfd_link_info *, elf_linker_section_t *, |
| 1414 | struct elf_link_hash_entry *, bfd_vma, |
| 1415 | const Elf32_Internal_Rela *, int)); |
| 1416 | |
| 1417 | extern boolean bfd_elf64_create_pointer_linker_section |
| 1418 | PARAMS ((bfd *, struct bfd_link_info *, elf_linker_section_t *, |
| 1419 | struct elf_link_hash_entry *, const Elf64_Internal_Rela *)); |
| 1420 | |
| 1421 | extern bfd_vma bfd_elf64_finish_pointer_linker_section |
| 1422 | PARAMS ((bfd *, bfd *, struct bfd_link_info *, elf_linker_section_t *, |
| 1423 | struct elf_link_hash_entry *, bfd_vma, |
| 1424 | const Elf64_Internal_Rela *, int)); |
| 1425 | |
| 1426 | extern boolean _bfd_elf_make_linker_section_rela |
| 1427 | PARAMS ((bfd *, elf_linker_section_t *, int)); |
| 1428 | |
| 1429 | extern const bfd_target *bfd_elf32_object_p |
| 1430 | PARAMS ((bfd *)); |
| 1431 | extern const bfd_target *bfd_elf32_core_file_p |
| 1432 | PARAMS ((bfd *)); |
| 1433 | extern char *bfd_elf32_core_file_failing_command |
| 1434 | PARAMS ((bfd *)); |
| 1435 | extern int bfd_elf32_core_file_failing_signal |
| 1436 | PARAMS ((bfd *)); |
| 1437 | extern boolean bfd_elf32_core_file_matches_executable_p |
| 1438 | PARAMS ((bfd *, bfd *)); |
| 1439 | |
| 1440 | extern boolean bfd_elf32_bfd_link_add_symbols |
| 1441 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1442 | extern boolean bfd_elf32_bfd_final_link |
| 1443 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1444 | |
| 1445 | extern void bfd_elf32_swap_symbol_in |
| 1446 | PARAMS ((bfd *, const PTR, const PTR, Elf_Internal_Sym *)); |
| 1447 | extern void bfd_elf32_swap_symbol_out |
| 1448 | PARAMS ((bfd *, const Elf_Internal_Sym *, PTR, PTR)); |
| 1449 | extern void bfd_elf32_swap_reloc_in |
| 1450 | PARAMS ((bfd *, const Elf32_External_Rel *, Elf_Internal_Rel *)); |
| 1451 | extern void bfd_elf32_swap_reloc_out |
| 1452 | PARAMS ((bfd *, const Elf_Internal_Rel *, Elf32_External_Rel *)); |
| 1453 | extern void bfd_elf32_swap_reloca_in |
| 1454 | PARAMS ((bfd *, const Elf32_External_Rela *, Elf_Internal_Rela *)); |
| 1455 | extern void bfd_elf32_swap_reloca_out |
| 1456 | PARAMS ((bfd *, const Elf_Internal_Rela *, Elf32_External_Rela *)); |
| 1457 | extern void bfd_elf32_swap_phdr_in |
| 1458 | PARAMS ((bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *)); |
| 1459 | extern void bfd_elf32_swap_phdr_out |
| 1460 | PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *)); |
| 1461 | extern void bfd_elf32_swap_dyn_in |
| 1462 | PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); |
| 1463 | extern void bfd_elf32_swap_dyn_out |
| 1464 | PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR)); |
| 1465 | extern long bfd_elf32_slurp_symbol_table |
| 1466 | PARAMS ((bfd *, asymbol **, boolean)); |
| 1467 | extern boolean bfd_elf32_write_shdrs_and_ehdr |
| 1468 | PARAMS ((bfd *)); |
| 1469 | extern int bfd_elf32_write_out_phdrs |
| 1470 | PARAMS ((bfd *, const Elf_Internal_Phdr *, unsigned int)); |
| 1471 | extern void bfd_elf32_write_relocs |
| 1472 | PARAMS ((bfd *, asection *, PTR)); |
| 1473 | extern boolean bfd_elf32_slurp_reloc_table |
| 1474 | PARAMS ((bfd *, asection *, asymbol **, boolean)); |
| 1475 | extern boolean bfd_elf32_add_dynamic_entry |
| 1476 | PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma)); |
| 1477 | extern boolean bfd_elf32_link_create_dynamic_sections |
| 1478 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1479 | extern Elf_Internal_Rela *_bfd_elf32_link_read_relocs |
| 1480 | PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean)); |
| 1481 | |
| 1482 | extern const bfd_target *bfd_elf64_object_p |
| 1483 | PARAMS ((bfd *)); |
| 1484 | extern const bfd_target *bfd_elf64_core_file_p |
| 1485 | PARAMS ((bfd *)); |
| 1486 | extern char *bfd_elf64_core_file_failing_command |
| 1487 | PARAMS ((bfd *)); |
| 1488 | extern int bfd_elf64_core_file_failing_signal |
| 1489 | PARAMS ((bfd *)); |
| 1490 | extern boolean bfd_elf64_core_file_matches_executable_p |
| 1491 | PARAMS ((bfd *, bfd *)); |
| 1492 | extern boolean bfd_elf64_bfd_link_add_symbols |
| 1493 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1494 | extern boolean bfd_elf64_bfd_final_link |
| 1495 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1496 | |
| 1497 | extern void bfd_elf64_swap_symbol_in |
| 1498 | PARAMS ((bfd *, const PTR, const PTR, Elf_Internal_Sym *)); |
| 1499 | extern void bfd_elf64_swap_symbol_out |
| 1500 | PARAMS ((bfd *, const Elf_Internal_Sym *, PTR, PTR)); |
| 1501 | extern void bfd_elf64_swap_reloc_in |
| 1502 | PARAMS ((bfd *, const Elf64_External_Rel *, Elf_Internal_Rel *)); |
| 1503 | extern void bfd_elf64_swap_reloc_out |
| 1504 | PARAMS ((bfd *, const Elf_Internal_Rel *, Elf64_External_Rel *)); |
| 1505 | extern void bfd_elf64_swap_reloca_in |
| 1506 | PARAMS ((bfd *, const Elf64_External_Rela *, Elf_Internal_Rela *)); |
| 1507 | extern void bfd_elf64_swap_reloca_out |
| 1508 | PARAMS ((bfd *, const Elf_Internal_Rela *, Elf64_External_Rela *)); |
| 1509 | extern void bfd_elf64_swap_phdr_in |
| 1510 | PARAMS ((bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *)); |
| 1511 | extern void bfd_elf64_swap_phdr_out |
| 1512 | PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *)); |
| 1513 | extern void bfd_elf64_swap_dyn_in |
| 1514 | PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *)); |
| 1515 | extern void bfd_elf64_swap_dyn_out |
| 1516 | PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR)); |
| 1517 | extern long bfd_elf64_slurp_symbol_table |
| 1518 | PARAMS ((bfd *, asymbol **, boolean)); |
| 1519 | extern boolean bfd_elf64_write_shdrs_and_ehdr |
| 1520 | PARAMS ((bfd *)); |
| 1521 | extern int bfd_elf64_write_out_phdrs |
| 1522 | PARAMS ((bfd *, const Elf_Internal_Phdr *, unsigned int)); |
| 1523 | extern void bfd_elf64_write_relocs |
| 1524 | PARAMS ((bfd *, asection *, PTR)); |
| 1525 | extern boolean bfd_elf64_slurp_reloc_table |
| 1526 | PARAMS ((bfd *, asection *, asymbol **, boolean)); |
| 1527 | extern boolean bfd_elf64_add_dynamic_entry |
| 1528 | PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma)); |
| 1529 | extern boolean bfd_elf64_link_create_dynamic_sections |
| 1530 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1531 | extern Elf_Internal_Rela *_bfd_elf64_link_read_relocs |
| 1532 | PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean)); |
| 1533 | |
| 1534 | #define bfd_elf32_link_record_dynamic_symbol \ |
| 1535 | _bfd_elf_link_record_dynamic_symbol |
| 1536 | #define bfd_elf64_link_record_dynamic_symbol \ |
| 1537 | _bfd_elf_link_record_dynamic_symbol |
| 1538 | |
| 1539 | extern boolean _bfd_elf32_link_record_local_dynamic_symbol |
| 1540 | PARAMS ((struct bfd_link_info *, bfd *, long)); |
| 1541 | extern boolean _bfd_elf64_link_record_local_dynamic_symbol |
| 1542 | PARAMS ((struct bfd_link_info *, bfd *, long)); |
| 1543 | |
| 1544 | extern boolean _bfd_elf_close_and_cleanup |
| 1545 | PARAMS ((bfd *)); |
| 1546 | extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn |
| 1547 | PARAMS ((bfd *, arelent *, struct symbol_cache_entry *, PTR, |
| 1548 | asection *, bfd *, char **)); |
| 1549 | |
| 1550 | extern boolean _bfd_elf32_gc_sections |
| 1551 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1552 | extern boolean _bfd_elf32_gc_common_finalize_got_offsets |
| 1553 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1554 | extern boolean _bfd_elf32_gc_common_final_link |
| 1555 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1556 | extern boolean _bfd_elf32_gc_record_vtinherit |
| 1557 | PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma)); |
| 1558 | extern boolean _bfd_elf32_gc_record_vtentry |
| 1559 | PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma)); |
| 1560 | |
| 1561 | extern boolean _bfd_elf64_gc_sections |
| 1562 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1563 | extern boolean _bfd_elf64_gc_common_finalize_got_offsets |
| 1564 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1565 | extern boolean _bfd_elf64_gc_common_final_link |
| 1566 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 1567 | extern boolean _bfd_elf64_gc_record_vtinherit |
| 1568 | PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma)); |
| 1569 | extern boolean _bfd_elf64_gc_record_vtentry |
| 1570 | PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma)); |
| 1571 | |
| 1572 | extern boolean _bfd_elf32_reloc_symbol_deleted_p |
| 1573 | PARAMS ((bfd_vma, PTR)); |
| 1574 | extern boolean _bfd_elf64_reloc_symbol_deleted_p |
| 1575 | PARAMS ((bfd_vma, PTR)); |
| 1576 | |
| 1577 | /* Exported interface for writing elf corefile notes. */ |
| 1578 | extern char *elfcore_write_note |
| 1579 | PARAMS ((bfd *, char *, int *, char *, int, void *, int)); |
| 1580 | extern char *elfcore_write_prpsinfo |
| 1581 | PARAMS ((bfd *, char *, int *, char *, char *)); |
| 1582 | extern char *elfcore_write_prstatus |
| 1583 | PARAMS ((bfd *, char *, int *, long, int, void *)); |
| 1584 | extern char * elfcore_write_pstatus |
| 1585 | PARAMS ((bfd *, char *, int *, long, int, void *)); |
| 1586 | extern char *elfcore_write_prfpreg |
| 1587 | PARAMS ((bfd *, char *, int *, void *, int)); |
| 1588 | extern char *elfcore_write_prxfpreg |
| 1589 | PARAMS ((bfd *, char *, int *, void *, int)); |
| 1590 | extern char *elfcore_write_lwpstatus |
| 1591 | PARAMS ((bfd*, char*, int*, long, int, void*)); |
| 1592 | |
| 1593 | /* SH ELF specific routine. */ |
| 1594 | |
| 1595 | extern boolean _sh_elf_set_mach_from_flags |
| 1596 | PARAMS ((bfd *)); |
| 1597 | |
| 1598 | #endif /* _LIBELF_H_ */ |