| 1 | /* BFD back-end data structures for ELF files. |
| 2 | Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
| 3 | 2002, 2003, 2004, 2005 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 | #ifndef NAME |
| 37 | #if ARCH_SIZE == 64 |
| 38 | #define NAME(x, y) x ## 64 ## _ ## y |
| 39 | #endif |
| 40 | #if ARCH_SIZE == 32 |
| 41 | #define NAME(x, y) x ## 32 ## _ ## y |
| 42 | #endif |
| 43 | #endif |
| 44 | |
| 45 | #ifndef NAME |
| 46 | #define NAME(x, y) x ## NOSIZE ## _ ## y |
| 47 | #endif |
| 48 | |
| 49 | #define ElfNAME(X) NAME(Elf,X) |
| 50 | #define elfNAME(X) NAME(elf,X) |
| 51 | |
| 52 | /* Information held for an ELF symbol. The first field is the |
| 53 | corresponding asymbol. Every symbol is an ELF file is actually a |
| 54 | pointer to this structure, although it is often handled as a |
| 55 | pointer to an asymbol. */ |
| 56 | |
| 57 | typedef struct |
| 58 | { |
| 59 | /* The BFD symbol. */ |
| 60 | asymbol symbol; |
| 61 | /* ELF symbol information. */ |
| 62 | Elf_Internal_Sym internal_elf_sym; |
| 63 | /* Backend specific information. */ |
| 64 | union |
| 65 | { |
| 66 | unsigned int hppa_arg_reloc; |
| 67 | void *mips_extr; |
| 68 | void *any; |
| 69 | } |
| 70 | tc_data; |
| 71 | |
| 72 | /* Version information. This is from an Elf_Internal_Versym |
| 73 | structure in a SHT_GNU_versym section. It is zero if there is no |
| 74 | version information. */ |
| 75 | unsigned short version; |
| 76 | |
| 77 | } elf_symbol_type; |
| 78 | \f |
| 79 | struct elf_strtab_hash; |
| 80 | struct got_entry; |
| 81 | struct plt_entry; |
| 82 | |
| 83 | /* ELF linker hash table entries. */ |
| 84 | |
| 85 | struct elf_link_hash_entry |
| 86 | { |
| 87 | struct bfd_link_hash_entry root; |
| 88 | |
| 89 | /* Symbol index in output file. This is initialized to -1. It is |
| 90 | set to -2 if the symbol is used by a reloc. */ |
| 91 | long indx; |
| 92 | |
| 93 | /* Symbol index as a dynamic symbol. Initialized to -1, and remains |
| 94 | -1 if this is not a dynamic symbol. */ |
| 95 | /* ??? Note that this is consistently used as a synonym for tests |
| 96 | against whether we can perform various simplifying transformations |
| 97 | to the code. (E.g. changing a pc-relative jump to a PLT entry |
| 98 | into a pc-relative jump to the target function.) That test, which |
| 99 | is often relatively complex, and someplaces wrong or incomplete, |
| 100 | should really be replaced by a predicate in elflink.c. |
| 101 | |
| 102 | End result: this field -1 does not indicate that the symbol is |
| 103 | not in the dynamic symbol table, but rather that the symbol is |
| 104 | not visible outside this DSO. */ |
| 105 | long dynindx; |
| 106 | |
| 107 | /* If this symbol requires an entry in the global offset table, the |
| 108 | processor specific backend uses this field to track usage and |
| 109 | final offset. Two schemes are supported: The first assumes that |
| 110 | a symbol may only have one GOT entry, and uses REFCOUNT until |
| 111 | size_dynamic_sections, at which point the contents of the .got is |
| 112 | fixed. Afterward, if OFFSET is -1, then the symbol does not |
| 113 | require a global offset table entry. The second scheme allows |
| 114 | multiple GOT entries per symbol, managed via a linked list |
| 115 | pointed to by GLIST. */ |
| 116 | union gotplt_union |
| 117 | { |
| 118 | bfd_signed_vma refcount; |
| 119 | bfd_vma offset; |
| 120 | struct got_entry *glist; |
| 121 | struct plt_entry *plist; |
| 122 | } got; |
| 123 | |
| 124 | /* Same, but tracks a procedure linkage table entry. */ |
| 125 | union gotplt_union plt; |
| 126 | |
| 127 | /* Symbol size. */ |
| 128 | bfd_size_type size; |
| 129 | |
| 130 | /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.). */ |
| 131 | unsigned int type : 8; |
| 132 | |
| 133 | /* Symbol st_other value, symbol visibility. */ |
| 134 | unsigned int other : 8; |
| 135 | |
| 136 | /* Symbol is referenced by a non-shared object. */ |
| 137 | unsigned int ref_regular : 1; |
| 138 | /* Symbol is defined by a non-shared object. */ |
| 139 | unsigned int def_regular : 1; |
| 140 | /* Symbol is referenced by a shared object. */ |
| 141 | unsigned int ref_dynamic : 1; |
| 142 | /* Symbol is defined by a shared object. */ |
| 143 | unsigned int def_dynamic : 1; |
| 144 | /* Symbol has a non-weak reference from a non-shared object. */ |
| 145 | unsigned int ref_regular_nonweak : 1; |
| 146 | /* Dynamic symbol has been adjustd. */ |
| 147 | unsigned int dynamic_adjusted : 1; |
| 148 | /* Symbol needs a copy reloc. */ |
| 149 | unsigned int needs_copy : 1; |
| 150 | /* Symbol needs a procedure linkage table entry. */ |
| 151 | unsigned int needs_plt : 1; |
| 152 | /* Symbol appears in a non-ELF input file. */ |
| 153 | unsigned int non_elf : 1; |
| 154 | /* Symbol should be marked as hidden in the version information. */ |
| 155 | unsigned int hidden : 1; |
| 156 | /* Symbol was forced to local scope due to a version script file. */ |
| 157 | unsigned int forced_local : 1; |
| 158 | /* Symbol was marked during garbage collection. */ |
| 159 | unsigned int mark : 1; |
| 160 | /* Symbol is referenced by a non-GOT/non-PLT relocation. This is |
| 161 | not currently set by all the backends. */ |
| 162 | unsigned int non_got_ref : 1; |
| 163 | /* Symbol has a definition in a shared object. |
| 164 | FIXME: There is no real need for this field if def_dynamic is never |
| 165 | cleared and all places that test def_dynamic also test def_regular. */ |
| 166 | unsigned int dynamic_def : 1; |
| 167 | /* Symbol is weak in all shared objects. */ |
| 168 | unsigned int dynamic_weak : 1; |
| 169 | /* Symbol is referenced with a relocation where C/C++ pointer equality |
| 170 | matters. */ |
| 171 | unsigned int pointer_equality_needed : 1; |
| 172 | |
| 173 | /* String table index in .dynstr if this is a dynamic symbol. */ |
| 174 | unsigned long dynstr_index; |
| 175 | |
| 176 | union |
| 177 | { |
| 178 | /* If this is a weak defined symbol from a dynamic object, this |
| 179 | field points to a defined symbol with the same value, if there is |
| 180 | one. Otherwise it is NULL. */ |
| 181 | struct elf_link_hash_entry *weakdef; |
| 182 | |
| 183 | /* Hash value of the name computed using the ELF hash function. |
| 184 | Used part way through size_dynamic_sections, after we've finished |
| 185 | with weakdefs. */ |
| 186 | unsigned long elf_hash_value; |
| 187 | } u; |
| 188 | |
| 189 | /* Version information. */ |
| 190 | union |
| 191 | { |
| 192 | /* This field is used for a symbol which is not defined in a |
| 193 | regular object. It points to the version information read in |
| 194 | from the dynamic object. */ |
| 195 | Elf_Internal_Verdef *verdef; |
| 196 | /* This field is used for a symbol which is defined in a regular |
| 197 | object. It is set up in size_dynamic_sections. It points to |
| 198 | the version information we should write out for this symbol. */ |
| 199 | struct bfd_elf_version_tree *vertree; |
| 200 | } verinfo; |
| 201 | |
| 202 | struct |
| 203 | { |
| 204 | /* Virtual table entry use information. This array is nominally of size |
| 205 | size/sizeof(target_void_pointer), though we have to be able to assume |
| 206 | and track a size while the symbol is still undefined. It is indexed |
| 207 | via offset/sizeof(target_void_pointer). */ |
| 208 | size_t size; |
| 209 | bfd_boolean *used; |
| 210 | |
| 211 | /* Virtual table derivation info. */ |
| 212 | struct elf_link_hash_entry *parent; |
| 213 | } *vtable; |
| 214 | }; |
| 215 | |
| 216 | /* Will references to this symbol always reference the symbol |
| 217 | in this object? STV_PROTECTED is excluded from the visibility test |
| 218 | here so that function pointer comparisons work properly. Since |
| 219 | function symbols not defined in an app are set to their .plt entry, |
| 220 | it's necessary for shared libs to also reference the .plt even |
| 221 | though the symbol is really local to the shared lib. */ |
| 222 | #define SYMBOL_REFERENCES_LOCAL(INFO, H) \ |
| 223 | _bfd_elf_symbol_refs_local_p (H, INFO, 0) |
| 224 | |
| 225 | /* Will _calls_ to this symbol always call the version in this object? */ |
| 226 | #define SYMBOL_CALLS_LOCAL(INFO, H) \ |
| 227 | _bfd_elf_symbol_refs_local_p (H, INFO, 1) |
| 228 | |
| 229 | /* Common symbols that are turned into definitions don't have the |
| 230 | DEF_REGULAR flag set, so they might appear to be undefined. */ |
| 231 | #define ELF_COMMON_DEF_P(H) \ |
| 232 | (!(H)->def_regular \ |
| 233 | && !(H)->def_dynamic \ |
| 234 | && (H)->root.type == bfd_link_hash_defined) |
| 235 | |
| 236 | /* Records local symbols to be emitted in the dynamic symbol table. */ |
| 237 | |
| 238 | struct elf_link_local_dynamic_entry |
| 239 | { |
| 240 | struct elf_link_local_dynamic_entry *next; |
| 241 | |
| 242 | /* The input bfd this symbol came from. */ |
| 243 | bfd *input_bfd; |
| 244 | |
| 245 | /* The index of the local symbol being copied. */ |
| 246 | long input_indx; |
| 247 | |
| 248 | /* The index in the outgoing dynamic symbol table. */ |
| 249 | long dynindx; |
| 250 | |
| 251 | /* A copy of the input symbol. */ |
| 252 | Elf_Internal_Sym isym; |
| 253 | }; |
| 254 | |
| 255 | struct elf_link_loaded_list |
| 256 | { |
| 257 | struct elf_link_loaded_list *next; |
| 258 | bfd *abfd; |
| 259 | }; |
| 260 | |
| 261 | /* Structures used by the eh_frame optimization code. */ |
| 262 | struct cie_header |
| 263 | { |
| 264 | unsigned int length; |
| 265 | unsigned int id; |
| 266 | }; |
| 267 | |
| 268 | struct cie |
| 269 | { |
| 270 | struct cie_header hdr; |
| 271 | unsigned char version; |
| 272 | char augmentation[20]; |
| 273 | bfd_vma code_align; |
| 274 | bfd_signed_vma data_align; |
| 275 | bfd_vma ra_column; |
| 276 | bfd_vma augmentation_size; |
| 277 | struct elf_link_hash_entry *personality; |
| 278 | unsigned char per_encoding; |
| 279 | unsigned char lsda_encoding; |
| 280 | unsigned char fde_encoding; |
| 281 | unsigned char initial_insn_length; |
| 282 | unsigned char make_relative; |
| 283 | unsigned char make_lsda_relative; |
| 284 | unsigned char initial_instructions[50]; |
| 285 | }; |
| 286 | |
| 287 | struct eh_cie_fde |
| 288 | { |
| 289 | /* For FDEs, this points to the CIE used. */ |
| 290 | struct eh_cie_fde *cie_inf; |
| 291 | unsigned int size; |
| 292 | unsigned int offset; |
| 293 | unsigned int new_offset; |
| 294 | unsigned char fde_encoding; |
| 295 | unsigned char lsda_encoding; |
| 296 | unsigned char lsda_offset; |
| 297 | unsigned int cie : 1; |
| 298 | unsigned int removed : 1; |
| 299 | unsigned int add_augmentation_size : 1; |
| 300 | unsigned int add_fde_encoding : 1; |
| 301 | unsigned int make_relative : 1; |
| 302 | unsigned int make_lsda_relative : 1; |
| 303 | unsigned int need_lsda_relative : 1; |
| 304 | unsigned int per_encoding_relative : 1; |
| 305 | }; |
| 306 | |
| 307 | struct eh_frame_sec_info |
| 308 | { |
| 309 | unsigned int count; |
| 310 | unsigned int alloced; |
| 311 | struct eh_cie_fde entry[1]; |
| 312 | }; |
| 313 | |
| 314 | struct eh_frame_array_ent |
| 315 | { |
| 316 | bfd_vma initial_loc; |
| 317 | bfd_vma fde; |
| 318 | }; |
| 319 | |
| 320 | struct eh_frame_hdr_info |
| 321 | { |
| 322 | struct cie last_cie; |
| 323 | asection *last_cie_sec; |
| 324 | struct eh_cie_fde *last_cie_inf; |
| 325 | asection *hdr_sec; |
| 326 | unsigned int fde_count, array_count; |
| 327 | struct eh_frame_array_ent *array; |
| 328 | /* TRUE if .eh_frame_hdr should contain the sorted search table. |
| 329 | We build it if we successfully read all .eh_frame input sections |
| 330 | and recognize them. */ |
| 331 | bfd_boolean table; |
| 332 | bfd_boolean offsets_adjusted; |
| 333 | }; |
| 334 | |
| 335 | /* ELF linker hash table. */ |
| 336 | |
| 337 | struct elf_link_hash_table |
| 338 | { |
| 339 | struct bfd_link_hash_table root; |
| 340 | |
| 341 | /* Whether we have created the special dynamic sections required |
| 342 | when linking against or generating a shared object. */ |
| 343 | bfd_boolean dynamic_sections_created; |
| 344 | |
| 345 | /* The BFD used to hold special sections created by the linker. |
| 346 | This will be the first BFD found which requires these sections to |
| 347 | be created. */ |
| 348 | bfd *dynobj; |
| 349 | |
| 350 | /* The value to use when initialising got.refcount/offset and |
| 351 | plt.refcount/offset in an elf_link_hash_entry. Set to zero when |
| 352 | the values are refcounts. Set to init_offset in |
| 353 | size_dynamic_sections when the values may be offsets. */ |
| 354 | union gotplt_union init_refcount; |
| 355 | |
| 356 | /* The value to use for got.refcount/offset and plt.refcount/offset |
| 357 | when the values may be offsets. Normally (bfd_vma) -1. */ |
| 358 | union gotplt_union init_offset; |
| 359 | |
| 360 | /* The number of symbols found in the link which must be put into |
| 361 | the .dynsym section. */ |
| 362 | bfd_size_type dynsymcount; |
| 363 | |
| 364 | /* The string table of dynamic symbols, which becomes the .dynstr |
| 365 | section. */ |
| 366 | struct elf_strtab_hash *dynstr; |
| 367 | |
| 368 | /* The number of buckets in the hash table in the .hash section. |
| 369 | This is based on the number of dynamic symbols. */ |
| 370 | bfd_size_type bucketcount; |
| 371 | |
| 372 | /* A linked list of DT_NEEDED names found in dynamic objects |
| 373 | included in the link. */ |
| 374 | struct bfd_link_needed_list *needed; |
| 375 | |
| 376 | /* The _GLOBAL_OFFSET_TABLE_ symbol. */ |
| 377 | struct elf_link_hash_entry *hgot; |
| 378 | |
| 379 | /* A pointer to information used to merge SEC_MERGE sections. */ |
| 380 | void *merge_info; |
| 381 | |
| 382 | /* Used to link stabs in sections. */ |
| 383 | struct stab_info stab_info; |
| 384 | |
| 385 | /* Used by eh_frame code when editing .eh_frame. */ |
| 386 | struct eh_frame_hdr_info eh_info; |
| 387 | |
| 388 | /* A linked list of local symbols to be added to .dynsym. */ |
| 389 | struct elf_link_local_dynamic_entry *dynlocal; |
| 390 | |
| 391 | /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic |
| 392 | objects included in the link. */ |
| 393 | struct bfd_link_needed_list *runpath; |
| 394 | |
| 395 | /* Cached first output tls section and size of PT_TLS segment. */ |
| 396 | asection *tls_sec; |
| 397 | bfd_size_type tls_size; |
| 398 | |
| 399 | /* A linked list of BFD's loaded in the link. */ |
| 400 | struct elf_link_loaded_list *loaded; |
| 401 | |
| 402 | /* True if this target has relocatable executables, so needs dynamic |
| 403 | section symbols. */ |
| 404 | bfd_boolean is_relocatable_executable; |
| 405 | }; |
| 406 | |
| 407 | /* Look up an entry in an ELF linker hash table. */ |
| 408 | |
| 409 | #define elf_link_hash_lookup(table, string, create, copy, follow) \ |
| 410 | ((struct elf_link_hash_entry *) \ |
| 411 | bfd_link_hash_lookup (&(table)->root, (string), (create), \ |
| 412 | (copy), (follow))) |
| 413 | |
| 414 | /* Traverse an ELF linker hash table. */ |
| 415 | |
| 416 | #define elf_link_hash_traverse(table, func, info) \ |
| 417 | (bfd_link_hash_traverse \ |
| 418 | (&(table)->root, \ |
| 419 | (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \ |
| 420 | (info))) |
| 421 | |
| 422 | /* Get the ELF linker hash table from a link_info structure. */ |
| 423 | |
| 424 | #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash)) |
| 425 | |
| 426 | /* Returns TRUE if the hash table is a struct elf_link_hash_table. */ |
| 427 | #define is_elf_hash_table(htab) \ |
| 428 | (((struct bfd_link_hash_table *) (htab))->type == bfd_link_elf_hash_table) |
| 429 | |
| 430 | /* Used by bfd_section_from_r_symndx to cache a small number of local |
| 431 | symbol to section mappings. */ |
| 432 | #define LOCAL_SYM_CACHE_SIZE 32 |
| 433 | struct sym_sec_cache |
| 434 | { |
| 435 | bfd *abfd; |
| 436 | unsigned long indx[LOCAL_SYM_CACHE_SIZE]; |
| 437 | asection *sec[LOCAL_SYM_CACHE_SIZE]; |
| 438 | }; |
| 439 | \f |
| 440 | /* Constant information held for an ELF backend. */ |
| 441 | |
| 442 | struct elf_size_info { |
| 443 | unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr; |
| 444 | unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note; |
| 445 | |
| 446 | /* The size of entries in the .hash section. */ |
| 447 | unsigned char sizeof_hash_entry; |
| 448 | |
| 449 | /* The number of internal relocations to allocate per external |
| 450 | relocation entry. */ |
| 451 | unsigned char int_rels_per_ext_rel; |
| 452 | /* We use some fixed size arrays. This should be large enough to |
| 453 | handle all back-ends. */ |
| 454 | #define MAX_INT_RELS_PER_EXT_REL 3 |
| 455 | |
| 456 | unsigned char arch_size, log_file_align; |
| 457 | unsigned char elfclass, ev_current; |
| 458 | int (*write_out_phdrs) |
| 459 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
| 460 | bfd_boolean |
| 461 | (*write_shdrs_and_ehdr) (bfd *); |
| 462 | void (*write_relocs) |
| 463 | (bfd *, asection *, void *); |
| 464 | void (*swap_symbol_in) |
| 465 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
| 466 | void (*swap_symbol_out) |
| 467 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
| 468 | bfd_boolean (*slurp_reloc_table) |
| 469 | (bfd *, asection *, asymbol **, bfd_boolean); |
| 470 | long (*slurp_symbol_table) |
| 471 | (bfd *, asymbol **, bfd_boolean); |
| 472 | void (*swap_dyn_in) |
| 473 | (bfd *, const void *, Elf_Internal_Dyn *); |
| 474 | void (*swap_dyn_out) |
| 475 | (bfd *, const Elf_Internal_Dyn *, void *); |
| 476 | |
| 477 | /* This function is called to swap in a REL relocation. If an |
| 478 | external relocation corresponds to more than one internal |
| 479 | relocation, then all relocations are swapped in at once. */ |
| 480 | void (*swap_reloc_in) |
| 481 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
| 482 | |
| 483 | /* This function is called to swap out a REL relocation. */ |
| 484 | void (*swap_reloc_out) |
| 485 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
| 486 | |
| 487 | /* This function is called to swap in a RELA relocation. If an |
| 488 | external relocation corresponds to more than one internal |
| 489 | relocation, then all relocations are swapped in at once. */ |
| 490 | void (*swap_reloca_in) |
| 491 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
| 492 | |
| 493 | /* This function is called to swap out a RELA relocation. */ |
| 494 | void (*swap_reloca_out) |
| 495 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
| 496 | }; |
| 497 | |
| 498 | #define elf_symbol_from(ABFD,S) \ |
| 499 | (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \ |
| 500 | && (S)->the_bfd->tdata.elf_obj_data != 0) \ |
| 501 | ? (elf_symbol_type *) (S) \ |
| 502 | : 0) |
| 503 | |
| 504 | enum elf_reloc_type_class { |
| 505 | reloc_class_normal, |
| 506 | reloc_class_relative, |
| 507 | reloc_class_plt, |
| 508 | reloc_class_copy |
| 509 | }; |
| 510 | |
| 511 | struct elf_reloc_cookie |
| 512 | { |
| 513 | Elf_Internal_Rela *rels, *rel, *relend; |
| 514 | Elf_Internal_Sym *locsyms; |
| 515 | bfd *abfd; |
| 516 | size_t locsymcount; |
| 517 | size_t extsymoff; |
| 518 | struct elf_link_hash_entry **sym_hashes; |
| 519 | int r_sym_shift; |
| 520 | bfd_boolean bad_symtab; |
| 521 | }; |
| 522 | |
| 523 | /* The level of IRIX compatibility we're striving for. */ |
| 524 | |
| 525 | typedef enum { |
| 526 | ict_none, |
| 527 | ict_irix5, |
| 528 | ict_irix6 |
| 529 | } irix_compat_t; |
| 530 | |
| 531 | /* Mapping of ELF section names and types. */ |
| 532 | struct bfd_elf_special_section |
| 533 | { |
| 534 | const char *prefix; |
| 535 | int prefix_length; |
| 536 | /* 0 means name must match PREFIX exactly. |
| 537 | -1 means name must start with PREFIX followed by an arbitrary string. |
| 538 | -2 means name must match PREFIX exactly or consist of PREFIX followed |
| 539 | by a dot then anything. |
| 540 | > 0 means name must start with the first PREFIX_LENGTH chars of |
| 541 | PREFIX and finish with the last SUFFIX_LENGTH chars of PREFIX. */ |
| 542 | int suffix_length; |
| 543 | int type; |
| 544 | int attr; |
| 545 | }; |
| 546 | |
| 547 | struct elf_backend_data |
| 548 | { |
| 549 | /* The architecture for this backend. */ |
| 550 | enum bfd_architecture arch; |
| 551 | |
| 552 | /* The ELF machine code (EM_xxxx) for this backend. */ |
| 553 | int elf_machine_code; |
| 554 | |
| 555 | /* The maximum page size for this backend. */ |
| 556 | bfd_vma maxpagesize; |
| 557 | |
| 558 | /* The minimum page size for this backend. An input object will not be |
| 559 | considered page aligned unless its sections are correctly aligned for |
| 560 | pages at least this large. May be smaller than maxpagesize. */ |
| 561 | bfd_vma minpagesize; |
| 562 | |
| 563 | /* The BFD flags applied to sections created for dynamic linking. */ |
| 564 | flagword dynamic_sec_flags; |
| 565 | |
| 566 | /* A function to translate an ELF RELA relocation to a BFD arelent |
| 567 | structure. */ |
| 568 | void (*elf_info_to_howto) |
| 569 | (bfd *, arelent *, Elf_Internal_Rela *); |
| 570 | |
| 571 | /* A function to translate an ELF REL relocation to a BFD arelent |
| 572 | structure. */ |
| 573 | void (*elf_info_to_howto_rel) |
| 574 | (bfd *, arelent *, Elf_Internal_Rela *); |
| 575 | |
| 576 | /* A function to determine whether a symbol is global when |
| 577 | partitioning the symbol table into local and global symbols. |
| 578 | This should be NULL for most targets, in which case the correct |
| 579 | thing will be done. MIPS ELF, at least on the Irix 5, has |
| 580 | special requirements. */ |
| 581 | bfd_boolean (*elf_backend_sym_is_global) |
| 582 | (bfd *, asymbol *); |
| 583 | |
| 584 | /* The remaining functions are hooks which are called only if they |
| 585 | are not NULL. */ |
| 586 | |
| 587 | /* A function to permit a backend specific check on whether a |
| 588 | particular BFD format is relevant for an object file, and to |
| 589 | permit the backend to set any global information it wishes. When |
| 590 | this is called elf_elfheader is set, but anything else should be |
| 591 | used with caution. If this returns FALSE, the check_format |
| 592 | routine will return a bfd_error_wrong_format error. */ |
| 593 | bfd_boolean (*elf_backend_object_p) |
| 594 | (bfd *); |
| 595 | |
| 596 | /* A function to do additional symbol processing when reading the |
| 597 | ELF symbol table. This is where any processor-specific special |
| 598 | section indices are handled. */ |
| 599 | void (*elf_backend_symbol_processing) |
| 600 | (bfd *, asymbol *); |
| 601 | |
| 602 | /* A function to do additional symbol processing after reading the |
| 603 | entire ELF symbol table. */ |
| 604 | bfd_boolean (*elf_backend_symbol_table_processing) |
| 605 | (bfd *, elf_symbol_type *, unsigned int); |
| 606 | |
| 607 | /* A function to set the type of the info field. Processor-specific |
| 608 | types should be handled here. */ |
| 609 | int (*elf_backend_get_symbol_type) |
| 610 | (Elf_Internal_Sym *, int); |
| 611 | |
| 612 | /* A function to return the linker hash table entry of a symbol that |
| 613 | might be satisfied by an archive symbol. */ |
| 614 | struct elf_link_hash_entry * (*elf_backend_archive_symbol_lookup) |
| 615 | (bfd *, struct bfd_link_info *, const char *); |
| 616 | |
| 617 | /* Return true if local section symbols should have a non-null st_name. |
| 618 | NULL implies false. */ |
| 619 | bfd_boolean (*elf_backend_name_local_section_symbols) |
| 620 | (bfd *); |
| 621 | |
| 622 | /* A function to do additional processing on the ELF section header |
| 623 | just before writing it out. This is used to set the flags and |
| 624 | type fields for some sections, or to actually write out data for |
| 625 | unusual sections. */ |
| 626 | bfd_boolean (*elf_backend_section_processing) |
| 627 | (bfd *, Elf_Internal_Shdr *); |
| 628 | |
| 629 | /* A function to handle unusual section types when creating BFD |
| 630 | sections from ELF sections. */ |
| 631 | bfd_boolean (*elf_backend_section_from_shdr) |
| 632 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
| 633 | |
| 634 | /* A function to convert machine dependent section header flags to |
| 635 | BFD internal section header flags. */ |
| 636 | bfd_boolean (*elf_backend_section_flags) |
| 637 | (flagword *, const Elf_Internal_Shdr *); |
| 638 | |
| 639 | /* A function to handle unusual program segment types when creating BFD |
| 640 | sections from ELF program segments. */ |
| 641 | bfd_boolean (*elf_backend_section_from_phdr) |
| 642 | (bfd *, Elf_Internal_Phdr *, int, const char *); |
| 643 | |
| 644 | /* A function to set up the ELF section header for a BFD section in |
| 645 | preparation for writing it out. This is where the flags and type |
| 646 | fields are set for unusual sections. */ |
| 647 | bfd_boolean (*elf_backend_fake_sections) |
| 648 | (bfd *, Elf_Internal_Shdr *, asection *); |
| 649 | |
| 650 | /* A function to get the ELF section index for a BFD section. If |
| 651 | this returns TRUE, the section was found. If it is a normal ELF |
| 652 | section, *RETVAL should be left unchanged. If it is not a normal |
| 653 | ELF section *RETVAL should be set to the SHN_xxxx index. */ |
| 654 | bfd_boolean (*elf_backend_section_from_bfd_section) |
| 655 | (bfd *, asection *, int *retval); |
| 656 | |
| 657 | /* If this field is not NULL, it is called by the add_symbols phase |
| 658 | of a link just before adding a symbol to the global linker hash |
| 659 | table. It may modify any of the fields as it wishes. If *NAME |
| 660 | is set to NULL, the symbol will be skipped rather than being |
| 661 | added to the hash table. This function is responsible for |
| 662 | handling all processor dependent symbol bindings and section |
| 663 | indices, and must set at least *FLAGS and *SEC for each processor |
| 664 | dependent case; failure to do so will cause a link error. */ |
| 665 | bfd_boolean (*elf_add_symbol_hook) |
| 666 | (bfd *abfd, struct bfd_link_info *info, Elf_Internal_Sym *, |
| 667 | const char **name, flagword *flags, asection **sec, bfd_vma *value); |
| 668 | |
| 669 | /* If this field is not NULL, it is called by the elf_link_output_sym |
| 670 | phase of a link for each symbol which will appear in the object file. */ |
| 671 | bfd_boolean (*elf_backend_link_output_symbol_hook) |
| 672 | (struct bfd_link_info *info, const char *, Elf_Internal_Sym *, |
| 673 | asection *, struct elf_link_hash_entry *); |
| 674 | |
| 675 | /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend |
| 676 | linker the first time it encounters a dynamic object in the link. |
| 677 | This function must create any sections required for dynamic |
| 678 | linking. The ABFD argument is a dynamic object. The .interp, |
| 679 | .dynamic, .dynsym, .dynstr, and .hash functions have already been |
| 680 | created, and this function may modify the section flags if |
| 681 | desired. This function will normally create the .got and .plt |
| 682 | sections, but different backends have different requirements. */ |
| 683 | bfd_boolean (*elf_backend_create_dynamic_sections) |
| 684 | (bfd *abfd, struct bfd_link_info *info); |
| 685 | |
| 686 | /* When creating a shared library, determine whether to omit the |
| 687 | dynamic symbol for the section. */ |
| 688 | bfd_boolean (*elf_backend_omit_section_dynsym) |
| 689 | (bfd *output_bfd, struct bfd_link_info *info, asection *osec); |
| 690 | |
| 691 | /* The CHECK_RELOCS function is called by the add_symbols phase of |
| 692 | the ELF backend linker. It is called once for each section with |
| 693 | relocs of an object file, just after the symbols for the object |
| 694 | file have been added to the global linker hash table. The |
| 695 | function must look through the relocs and do any special handling |
| 696 | required. This generally means allocating space in the global |
| 697 | offset table, and perhaps allocating space for a reloc. The |
| 698 | relocs are always passed as Rela structures; if the section |
| 699 | actually uses Rel structures, the r_addend field will always be |
| 700 | zero. */ |
| 701 | bfd_boolean (*check_relocs) |
| 702 | (bfd *abfd, struct bfd_link_info *info, asection *o, |
| 703 | const Elf_Internal_Rela *relocs); |
| 704 | |
| 705 | /* The CHECK_DIRECTIVES function is called once per input file by |
| 706 | the add_symbols phase of the ELF backend linker. The function |
| 707 | must inspect the bfd and create any additional symbols according |
| 708 | to any custom directives in the bfd. */ |
| 709 | bfd_boolean (*check_directives) |
| 710 | (bfd *abfd, struct bfd_link_info *info); |
| 711 | |
| 712 | /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend |
| 713 | linker for every symbol which is defined by a dynamic object and |
| 714 | referenced by a regular object. This is called after all the |
| 715 | input files have been seen, but before the SIZE_DYNAMIC_SECTIONS |
| 716 | function has been called. The hash table entry should be |
| 717 | bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be |
| 718 | defined in a section from a dynamic object. Dynamic object |
| 719 | sections are not included in the final link, and this function is |
| 720 | responsible for changing the value to something which the rest of |
| 721 | the link can deal with. This will normally involve adding an |
| 722 | entry to the .plt or .got or some such section, and setting the |
| 723 | symbol to point to that. */ |
| 724 | bfd_boolean (*elf_backend_adjust_dynamic_symbol) |
| 725 | (struct bfd_link_info *info, struct elf_link_hash_entry *h); |
| 726 | |
| 727 | /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker |
| 728 | after all the linker input files have been seen but before the |
| 729 | section sizes have been set. This is called after |
| 730 | ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS. */ |
| 731 | bfd_boolean (*elf_backend_always_size_sections) |
| 732 | (bfd *output_bfd, struct bfd_link_info *info); |
| 733 | |
| 734 | /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend |
| 735 | linker after all the linker input files have been seen but before |
| 736 | the sections sizes have been set. This is called after |
| 737 | ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols. |
| 738 | It is only called when linking against a dynamic object. It must |
| 739 | set the sizes of the dynamic sections, and may fill in their |
| 740 | contents as well. The generic ELF linker can handle the .dynsym, |
| 741 | .dynstr and .hash sections. This function must handle the |
| 742 | .interp section and any sections created by the |
| 743 | CREATE_DYNAMIC_SECTIONS entry point. */ |
| 744 | bfd_boolean (*elf_backend_size_dynamic_sections) |
| 745 | (bfd *output_bfd, struct bfd_link_info *info); |
| 746 | |
| 747 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
| 748 | to handle the relocations for a section. |
| 749 | |
| 750 | The relocs are always passed as Rela structures; if the section |
| 751 | actually uses Rel structures, the r_addend field will always be |
| 752 | zero. |
| 753 | |
| 754 | This function is responsible for adjust the section contents as |
| 755 | necessary, and (if using Rela relocs and generating a |
| 756 | relocatable output file) adjusting the reloc addend as |
| 757 | necessary. |
| 758 | |
| 759 | This function does not have to worry about setting the reloc |
| 760 | address or the reloc symbol index. |
| 761 | |
| 762 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 763 | |
| 764 | LOCAL_SECTIONS is an array giving the section in the input file |
| 765 | corresponding to the st_shndx field of each local symbol. |
| 766 | |
| 767 | The global hash table entry for the global symbols can be found |
| 768 | via elf_sym_hashes (input_bfd). |
| 769 | |
| 770 | When generating relocatable output, this function must handle |
| 771 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 772 | going to be the section symbol corresponding to the output |
| 773 | section, which means that the addend must be adjusted |
| 774 | accordingly. */ |
| 775 | bfd_boolean (*elf_backend_relocate_section) |
| 776 | (bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd, |
| 777 | asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs, |
| 778 | Elf_Internal_Sym *local_syms, asection **local_sections); |
| 779 | |
| 780 | /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend |
| 781 | linker just before it writes a symbol out to the .dynsym section. |
| 782 | The processor backend may make any required adjustment to the |
| 783 | symbol. It may also take the opportunity to set contents of the |
| 784 | dynamic sections. Note that FINISH_DYNAMIC_SYMBOL is called on |
| 785 | all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called |
| 786 | on those symbols which are defined by a dynamic object. */ |
| 787 | bfd_boolean (*elf_backend_finish_dynamic_symbol) |
| 788 | (bfd *output_bfd, struct bfd_link_info *info, |
| 789 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym); |
| 790 | |
| 791 | /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend |
| 792 | linker just before it writes all the dynamic sections out to the |
| 793 | output file. The FINISH_DYNAMIC_SYMBOL will have been called on |
| 794 | all dynamic symbols. */ |
| 795 | bfd_boolean (*elf_backend_finish_dynamic_sections) |
| 796 | (bfd *output_bfd, struct bfd_link_info *info); |
| 797 | |
| 798 | /* A function to do any beginning processing needed for the ELF file |
| 799 | before building the ELF headers and computing file positions. */ |
| 800 | void (*elf_backend_begin_write_processing) |
| 801 | (bfd *, struct bfd_link_info *); |
| 802 | |
| 803 | /* A function to do any final processing needed for the ELF file |
| 804 | before writing it out. The LINKER argument is TRUE if this BFD |
| 805 | was created by the ELF backend linker. */ |
| 806 | void (*elf_backend_final_write_processing) |
| 807 | (bfd *, bfd_boolean linker); |
| 808 | |
| 809 | /* This function is called by get_program_header_size. It should |
| 810 | return the number of additional program segments which this BFD |
| 811 | will need. It should return -1 on error. */ |
| 812 | int (*elf_backend_additional_program_headers) |
| 813 | (bfd *); |
| 814 | |
| 815 | /* This function is called to modify an existing segment map in a |
| 816 | backend specific fashion. */ |
| 817 | bfd_boolean (*elf_backend_modify_segment_map) |
| 818 | (bfd *, struct bfd_link_info *); |
| 819 | |
| 820 | /* This function is called during section gc to discover the section a |
| 821 | particular relocation refers to. */ |
| 822 | asection * (*gc_mark_hook) |
| 823 | (asection *sec, struct bfd_link_info *, Elf_Internal_Rela *, |
| 824 | struct elf_link_hash_entry *h, Elf_Internal_Sym *); |
| 825 | |
| 826 | /* This function, if defined, is called during the sweep phase of gc |
| 827 | in order that a backend might update any data structures it might |
| 828 | be maintaining. */ |
| 829 | bfd_boolean (*gc_sweep_hook) |
| 830 | (bfd *abfd, struct bfd_link_info *info, asection *o, |
| 831 | const Elf_Internal_Rela *relocs); |
| 832 | |
| 833 | /* This function, if defined, is called after the ELF headers have |
| 834 | been created. This allows for things like the OS and ABI versions |
| 835 | to be changed. */ |
| 836 | void (*elf_backend_post_process_headers) |
| 837 | (bfd *, struct bfd_link_info *); |
| 838 | |
| 839 | /* This function, if defined, prints a symbol to file and returns the |
| 840 | name of the symbol to be printed. It should return NULL to fall |
| 841 | back to default symbol printing. */ |
| 842 | const char *(*elf_backend_print_symbol_all) |
| 843 | (bfd *, void *, asymbol *); |
| 844 | |
| 845 | /* This function, if defined, is called after all local symbols and |
| 846 | global symbols converted to locals are emitted into the symtab |
| 847 | section. It allows the backend to emit special global symbols |
| 848 | not handled in the hash table. */ |
| 849 | bfd_boolean (*elf_backend_output_arch_syms) |
| 850 | (bfd *, struct bfd_link_info *, void *, |
| 851 | bfd_boolean (*) (void *, const char *, Elf_Internal_Sym *, asection *, |
| 852 | struct elf_link_hash_entry *)); |
| 853 | |
| 854 | /* Copy any information related to dynamic linking from a pre-existing |
| 855 | symbol to a newly created symbol. Also called to copy flags and |
| 856 | other back-end info to a weakdef, in which case the symbol is not |
| 857 | newly created and plt/got refcounts and dynamic indices should not |
| 858 | be copied. */ |
| 859 | void (*elf_backend_copy_indirect_symbol) |
| 860 | (const struct elf_backend_data *, struct elf_link_hash_entry *, |
| 861 | struct elf_link_hash_entry *); |
| 862 | |
| 863 | /* Modify any information related to dynamic linking such that the |
| 864 | symbol is not exported. */ |
| 865 | void (*elf_backend_hide_symbol) |
| 866 | (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean); |
| 867 | |
| 868 | /* Merge the backend specific symbol attribute. */ |
| 869 | void (*elf_backend_merge_symbol_attribute) |
| 870 | (struct elf_link_hash_entry *, const Elf_Internal_Sym *, bfd_boolean, |
| 871 | bfd_boolean); |
| 872 | |
| 873 | /* Emit relocations. Overrides default routine for emitting relocs, |
| 874 | except during a relocatable link, or if all relocs are being emitted. */ |
| 875 | bfd_boolean (*elf_backend_emit_relocs) |
| 876 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *); |
| 877 | |
| 878 | /* Count relocations. Not called for relocatable links |
| 879 | or if all relocs are being preserved in the output. */ |
| 880 | unsigned int (*elf_backend_count_relocs) |
| 881 | (asection *, Elf_Internal_Rela *); |
| 882 | |
| 883 | /* This function, if defined, is called when an NT_PRSTATUS note is found |
| 884 | in a core file. */ |
| 885 | bfd_boolean (*elf_backend_grok_prstatus) |
| 886 | (bfd *, Elf_Internal_Note *); |
| 887 | |
| 888 | /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO |
| 889 | note is found in a core file. */ |
| 890 | bfd_boolean (*elf_backend_grok_psinfo) |
| 891 | (bfd *, Elf_Internal_Note *); |
| 892 | |
| 893 | /* Functions to print VMAs. Special code to handle 64 bit ELF files. */ |
| 894 | void (* elf_backend_sprintf_vma) |
| 895 | (bfd *, char *, bfd_vma); |
| 896 | void (* elf_backend_fprintf_vma) |
| 897 | (bfd *, void *, bfd_vma); |
| 898 | |
| 899 | /* This function returns class of a reloc type. */ |
| 900 | enum elf_reloc_type_class (*elf_backend_reloc_type_class) |
| 901 | (const Elf_Internal_Rela *); |
| 902 | |
| 903 | /* This function, if defined, removes information about discarded functions |
| 904 | from other sections which mention them. */ |
| 905 | bfd_boolean (*elf_backend_discard_info) |
| 906 | (bfd *, struct elf_reloc_cookie *, struct bfd_link_info *); |
| 907 | |
| 908 | /* This function, if defined, signals that the function above has removed |
| 909 | the discarded relocations for this section. */ |
| 910 | bfd_boolean (*elf_backend_ignore_discarded_relocs) |
| 911 | (asection *); |
| 912 | |
| 913 | /* This function returns the width of FDE pointers in bytes, or 0 if |
| 914 | that can't be determined for some reason. The default definition |
| 915 | goes by the bfd's EI_CLASS. */ |
| 916 | unsigned int (*elf_backend_eh_frame_address_size) |
| 917 | (bfd *, asection *); |
| 918 | |
| 919 | /* These functions tell elf-eh-frame whether to attempt to turn |
| 920 | absolute or lsda encodings into pc-relative ones. The default |
| 921 | definition enables these transformations. */ |
| 922 | bfd_boolean (*elf_backend_can_make_relative_eh_frame) |
| 923 | (bfd *, struct bfd_link_info *, asection *); |
| 924 | bfd_boolean (*elf_backend_can_make_lsda_relative_eh_frame) |
| 925 | (bfd *, struct bfd_link_info *, asection *); |
| 926 | |
| 927 | /* This function returns an encoding after computing the encoded |
| 928 | value (and storing it in ENCODED) for the given OFFSET into OSEC, |
| 929 | to be stored in at LOC_OFFSET into the LOC_SEC input section. |
| 930 | The default definition chooses a 32-bit PC-relative encoding. */ |
| 931 | bfd_byte (*elf_backend_encode_eh_address) |
| 932 | (bfd *abfd, struct bfd_link_info *info, |
| 933 | asection *osec, bfd_vma offset, |
| 934 | asection *loc_sec, bfd_vma loc_offset, |
| 935 | bfd_vma *encoded); |
| 936 | |
| 937 | /* This function, if defined, may write out the given section. |
| 938 | Returns TRUE if it did so and FALSE if the caller should. */ |
| 939 | bfd_boolean (*elf_backend_write_section) |
| 940 | (bfd *, asection *, bfd_byte *); |
| 941 | |
| 942 | /* The level of IRIX compatibility we're striving for. |
| 943 | MIPS ELF specific function. */ |
| 944 | irix_compat_t (*elf_backend_mips_irix_compat) |
| 945 | (bfd *); |
| 946 | |
| 947 | reloc_howto_type *(*elf_backend_mips_rtype_to_howto) |
| 948 | (unsigned int, bfd_boolean); |
| 949 | |
| 950 | /* The swapping table to use when dealing with ECOFF information. |
| 951 | Used for the MIPS ELF .mdebug section. */ |
| 952 | const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap; |
| 953 | |
| 954 | /* This function implements `bfd_elf_bfd_from_remote_memory'; |
| 955 | see elf.c, elfcode.h. */ |
| 956 | bfd *(*elf_backend_bfd_from_remote_memory) |
| 957 | (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep, |
| 958 | int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr, int len)); |
| 959 | |
| 960 | /* This function is used by `_bfd_elf_get_synthetic_symtab'; |
| 961 | see elf.c. */ |
| 962 | bfd_vma (*plt_sym_val) (bfd_vma, const asection *, const arelent *); |
| 963 | |
| 964 | /* Used to handle bad SHF_LINK_ORDER input. */ |
| 965 | bfd_error_handler_type link_order_error_handler; |
| 966 | |
| 967 | /* Name of the PLT relocation section. */ |
| 968 | const char *relplt_name; |
| 969 | |
| 970 | /* Alternate EM_xxxx machine codes for this backend. */ |
| 971 | int elf_machine_alt1; |
| 972 | int elf_machine_alt2; |
| 973 | |
| 974 | const struct elf_size_info *s; |
| 975 | |
| 976 | /* An array of target specific special section map. */ |
| 977 | const struct bfd_elf_special_section *special_sections; |
| 978 | |
| 979 | /* offset of the _GLOBAL_OFFSET_TABLE_ symbol from the start of the |
| 980 | .got section */ |
| 981 | bfd_vma got_symbol_offset; |
| 982 | |
| 983 | /* The size in bytes of the header for the GOT. This includes the |
| 984 | so-called reserved entries on some systems. */ |
| 985 | bfd_vma got_header_size; |
| 986 | |
| 987 | /* This is TRUE if the linker should act like collect and gather |
| 988 | global constructors and destructors by name. This is TRUE for |
| 989 | MIPS ELF because the Irix 5 tools can not handle the .init |
| 990 | section. */ |
| 991 | unsigned collect : 1; |
| 992 | |
| 993 | /* This is TRUE if the linker should ignore changes to the type of a |
| 994 | symbol. This is TRUE for MIPS ELF because some Irix 5 objects |
| 995 | record undefined functions as STT_OBJECT although the definitions |
| 996 | are STT_FUNC. */ |
| 997 | unsigned type_change_ok : 1; |
| 998 | |
| 999 | /* Whether the backend may use REL relocations. (Some backends use |
| 1000 | both REL and RELA relocations, and this flag is set for those |
| 1001 | backends.) */ |
| 1002 | unsigned may_use_rel_p : 1; |
| 1003 | |
| 1004 | /* Whether the backend may use RELA relocations. (Some backends use |
| 1005 | both REL and RELA relocations, and this flag is set for those |
| 1006 | backends.) */ |
| 1007 | unsigned may_use_rela_p : 1; |
| 1008 | |
| 1009 | /* Whether the default relocation type is RELA. If a backend with |
| 1010 | this flag set wants REL relocations for a particular section, |
| 1011 | it must note that explicitly. Similarly, if this flag is clear, |
| 1012 | and the backend wants RELA relocations for a particular |
| 1013 | section. */ |
| 1014 | unsigned default_use_rela_p : 1; |
| 1015 | |
| 1016 | /* Set if RELA relocations for a relocatable link can be handled by |
| 1017 | generic code. Backends that set this flag need do nothing in the |
| 1018 | backend relocate_section routine for relocatable linking. */ |
| 1019 | unsigned rela_normal : 1; |
| 1020 | |
| 1021 | /* TRUE if addresses "naturally" sign extend. This is used when |
| 1022 | swapping in from Elf32 when BFD64. */ |
| 1023 | unsigned sign_extend_vma : 1; |
| 1024 | |
| 1025 | unsigned want_got_plt : 1; |
| 1026 | unsigned plt_readonly : 1; |
| 1027 | unsigned want_plt_sym : 1; |
| 1028 | unsigned plt_not_loaded : 1; |
| 1029 | unsigned plt_alignment : 4; |
| 1030 | unsigned can_gc_sections : 1; |
| 1031 | unsigned can_refcount : 1; |
| 1032 | unsigned want_got_sym : 1; |
| 1033 | unsigned want_dynbss : 1; |
| 1034 | /* Targets which do not support physical addressing often require |
| 1035 | that the p_paddr field in the section header to be set to zero. |
| 1036 | This field indicates whether this behavior is required. */ |
| 1037 | unsigned want_p_paddr_set_to_zero : 1; |
| 1038 | }; |
| 1039 | |
| 1040 | /* Information stored for each BFD section in an ELF file. This |
| 1041 | structure is allocated by elf_new_section_hook. */ |
| 1042 | |
| 1043 | struct bfd_elf_section_data |
| 1044 | { |
| 1045 | /* The ELF header for this section. */ |
| 1046 | Elf_Internal_Shdr this_hdr; |
| 1047 | |
| 1048 | /* The ELF header for the reloc section associated with this |
| 1049 | section, if any. */ |
| 1050 | Elf_Internal_Shdr rel_hdr; |
| 1051 | |
| 1052 | /* If there is a second reloc section associated with this section, |
| 1053 | as can happen on Irix 6, this field points to the header. */ |
| 1054 | Elf_Internal_Shdr *rel_hdr2; |
| 1055 | |
| 1056 | /* The number of relocations currently assigned to REL_HDR. */ |
| 1057 | unsigned int rel_count; |
| 1058 | |
| 1059 | /* The number of relocations currently assigned to REL_HDR2. */ |
| 1060 | unsigned int rel_count2; |
| 1061 | |
| 1062 | /* The ELF section number of this section. */ |
| 1063 | int this_idx; |
| 1064 | |
| 1065 | /* The ELF section number of the reloc section indicated by |
| 1066 | REL_HDR if any. Only used for an output file. */ |
| 1067 | int rel_idx; |
| 1068 | |
| 1069 | /* The ELF section number of the reloc section indicated by |
| 1070 | REL_HDR2 if any. Only used for an output file. */ |
| 1071 | int rel_idx2; |
| 1072 | |
| 1073 | /* Used by the backend linker when generating a shared library to |
| 1074 | record the dynamic symbol index for a section symbol |
| 1075 | corresponding to this section. A value of 0 means that there is |
| 1076 | no dynamic symbol for this section. */ |
| 1077 | int dynindx; |
| 1078 | |
| 1079 | /* A pointer to the linked-to section for SHF_LINK_ORDER. */ |
| 1080 | asection *linked_to; |
| 1081 | |
| 1082 | /* Used by the backend linker to store the symbol hash table entries |
| 1083 | associated with relocs against global symbols. */ |
| 1084 | struct elf_link_hash_entry **rel_hashes; |
| 1085 | |
| 1086 | /* A pointer to the swapped relocs. If the section uses REL relocs, |
| 1087 | rather than RELA, all the r_addend fields will be zero. This |
| 1088 | pointer may be NULL. It is used by the backend linker. */ |
| 1089 | Elf_Internal_Rela *relocs; |
| 1090 | |
| 1091 | /* A pointer to a linked list tracking dynamic relocs copied for |
| 1092 | local symbols. */ |
| 1093 | void *local_dynrel; |
| 1094 | |
| 1095 | /* A pointer to the bfd section used for dynamic relocs. */ |
| 1096 | asection *sreloc; |
| 1097 | |
| 1098 | union { |
| 1099 | /* Group name, if this section is a member of a group. */ |
| 1100 | const char *name; |
| 1101 | |
| 1102 | /* Group signature sym, if this is the SHT_GROUP section. */ |
| 1103 | struct bfd_symbol *id; |
| 1104 | } group; |
| 1105 | |
| 1106 | /* Optional information about section group; NULL if it doesn't |
| 1107 | belongs to any section group. */ |
| 1108 | asection *sec_group; |
| 1109 | |
| 1110 | /* A linked list of sections in the group. Circular when used by |
| 1111 | the linker. */ |
| 1112 | asection *next_in_group; |
| 1113 | |
| 1114 | /* A pointer used for various section optimizations. */ |
| 1115 | void *sec_info; |
| 1116 | }; |
| 1117 | |
| 1118 | #define elf_section_data(sec) ((struct bfd_elf_section_data*)sec->used_by_bfd) |
| 1119 | #define elf_linked_to_section(sec) (elf_section_data(sec)->linked_to) |
| 1120 | #define elf_section_type(sec) (elf_section_data(sec)->this_hdr.sh_type) |
| 1121 | #define elf_section_flags(sec) (elf_section_data(sec)->this_hdr.sh_flags) |
| 1122 | #define elf_group_name(sec) (elf_section_data(sec)->group.name) |
| 1123 | #define elf_group_id(sec) (elf_section_data(sec)->group.id) |
| 1124 | #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group) |
| 1125 | #define elf_sec_group(sec) (elf_section_data(sec)->sec_group) |
| 1126 | |
| 1127 | /* Return TRUE if section has been discarded. */ |
| 1128 | #define elf_discarded_section(sec) \ |
| 1129 | (!bfd_is_abs_section (sec) \ |
| 1130 | && bfd_is_abs_section ((sec)->output_section) \ |
| 1131 | && (sec)->sec_info_type != ELF_INFO_TYPE_MERGE \ |
| 1132 | && (sec)->sec_info_type != ELF_INFO_TYPE_JUST_SYMS) |
| 1133 | |
| 1134 | #define get_elf_backend_data(abfd) \ |
| 1135 | ((const struct elf_backend_data *) (abfd)->xvec->backend_data) |
| 1136 | |
| 1137 | /* This struct is used to pass information to routines called via |
| 1138 | elf_link_hash_traverse which must return failure. */ |
| 1139 | |
| 1140 | struct elf_info_failed |
| 1141 | { |
| 1142 | bfd_boolean failed; |
| 1143 | struct bfd_link_info *info; |
| 1144 | struct bfd_elf_version_tree *verdefs; |
| 1145 | }; |
| 1146 | |
| 1147 | /* This structure is used to pass information to |
| 1148 | _bfd_elf_link_assign_sym_version. */ |
| 1149 | |
| 1150 | struct elf_assign_sym_version_info |
| 1151 | { |
| 1152 | /* Output BFD. */ |
| 1153 | bfd *output_bfd; |
| 1154 | /* General link information. */ |
| 1155 | struct bfd_link_info *info; |
| 1156 | /* Version tree. */ |
| 1157 | struct bfd_elf_version_tree *verdefs; |
| 1158 | /* Whether we had a failure. */ |
| 1159 | bfd_boolean failed; |
| 1160 | }; |
| 1161 | |
| 1162 | /* This structure is used to pass information to |
| 1163 | _bfd_elf_link_find_version_dependencies. */ |
| 1164 | |
| 1165 | struct elf_find_verdep_info |
| 1166 | { |
| 1167 | /* Output BFD. */ |
| 1168 | bfd *output_bfd; |
| 1169 | /* General link information. */ |
| 1170 | struct bfd_link_info *info; |
| 1171 | /* The number of dependencies. */ |
| 1172 | unsigned int vers; |
| 1173 | /* Whether we had a failure. */ |
| 1174 | bfd_boolean failed; |
| 1175 | }; |
| 1176 | |
| 1177 | /* Some private data is stashed away for future use using the tdata pointer |
| 1178 | in the bfd structure. */ |
| 1179 | |
| 1180 | struct elf_obj_tdata |
| 1181 | { |
| 1182 | Elf_Internal_Ehdr elf_header[1]; /* Actual data, but ref like ptr */ |
| 1183 | Elf_Internal_Shdr **elf_sect_ptr; |
| 1184 | Elf_Internal_Phdr *phdr; |
| 1185 | struct elf_segment_map *segment_map; |
| 1186 | struct elf_strtab_hash *strtab_ptr; |
| 1187 | int num_locals; |
| 1188 | int num_globals; |
| 1189 | unsigned int num_elf_sections; /* elf_sect_ptr size */ |
| 1190 | int num_section_syms; |
| 1191 | asymbol **section_syms; /* STT_SECTION symbols for each section */ |
| 1192 | Elf_Internal_Shdr symtab_hdr; |
| 1193 | Elf_Internal_Shdr shstrtab_hdr; |
| 1194 | Elf_Internal_Shdr strtab_hdr; |
| 1195 | Elf_Internal_Shdr dynsymtab_hdr; |
| 1196 | Elf_Internal_Shdr dynstrtab_hdr; |
| 1197 | Elf_Internal_Shdr dynversym_hdr; |
| 1198 | Elf_Internal_Shdr dynverref_hdr; |
| 1199 | Elf_Internal_Shdr dynverdef_hdr; |
| 1200 | Elf_Internal_Shdr symtab_shndx_hdr; |
| 1201 | unsigned int symtab_section, shstrtab_section; |
| 1202 | unsigned int strtab_section, dynsymtab_section; |
| 1203 | unsigned int symtab_shndx_section; |
| 1204 | unsigned int dynversym_section, dynverdef_section, dynverref_section; |
| 1205 | file_ptr next_file_pos; |
| 1206 | bfd_vma gp; /* The gp value */ |
| 1207 | unsigned int gp_size; /* The gp size */ |
| 1208 | |
| 1209 | /* Information grabbed from an elf core file. */ |
| 1210 | int core_signal; |
| 1211 | int core_pid; |
| 1212 | int core_lwpid; |
| 1213 | char* core_program; |
| 1214 | char* core_command; |
| 1215 | |
| 1216 | /* A mapping from external symbols to entries in the linker hash |
| 1217 | table, used when linking. This is indexed by the symbol index |
| 1218 | minus the sh_info field of the symbol table header. */ |
| 1219 | struct elf_link_hash_entry **sym_hashes; |
| 1220 | |
| 1221 | /* Track usage and final offsets of GOT entries for local symbols. |
| 1222 | This array is indexed by symbol index. Elements are used |
| 1223 | identically to "got" in struct elf_link_hash_entry. */ |
| 1224 | union |
| 1225 | { |
| 1226 | bfd_signed_vma *refcounts; |
| 1227 | bfd_vma *offsets; |
| 1228 | struct got_entry **ents; |
| 1229 | } local_got; |
| 1230 | |
| 1231 | /* The linker ELF emulation code needs to let the backend ELF linker |
| 1232 | know what filename should be used for a dynamic object if the |
| 1233 | dynamic object is found using a search. The emulation code then |
| 1234 | sometimes needs to know what name was actually used. Until the |
| 1235 | file has been added to the linker symbol table, this field holds |
| 1236 | the name the linker wants. After it has been added, it holds the |
| 1237 | name actually used, which will be the DT_SONAME entry if there is |
| 1238 | one. */ |
| 1239 | const char *dt_name; |
| 1240 | |
| 1241 | /* Records the result of `get_program_header_size'. */ |
| 1242 | bfd_size_type program_header_size; |
| 1243 | |
| 1244 | /* Used by find_nearest_line entry point. */ |
| 1245 | void *line_info; |
| 1246 | |
| 1247 | /* Used by MIPS ELF find_nearest_line entry point. The structure |
| 1248 | could be included directly in this one, but there's no point to |
| 1249 | wasting the memory just for the infrequently called |
| 1250 | find_nearest_line. */ |
| 1251 | struct mips_elf_find_line *find_line_info; |
| 1252 | |
| 1253 | /* A place to stash dwarf1 info for this bfd. */ |
| 1254 | struct dwarf1_debug *dwarf1_find_line_info; |
| 1255 | |
| 1256 | /* A place to stash dwarf2 info for this bfd. */ |
| 1257 | void *dwarf2_find_line_info; |
| 1258 | |
| 1259 | /* An array of stub sections indexed by symbol number, used by the |
| 1260 | MIPS ELF linker. FIXME: We should figure out some way to only |
| 1261 | include this field for a MIPS ELF target. */ |
| 1262 | asection **local_stubs; |
| 1263 | |
| 1264 | /* Used to determine if PT_GNU_EH_FRAME segment header should be |
| 1265 | created. */ |
| 1266 | asection *eh_frame_hdr; |
| 1267 | |
| 1268 | Elf_Internal_Shdr **group_sect_ptr; |
| 1269 | int num_group; |
| 1270 | |
| 1271 | /* Number of symbol version definitions we are about to emit. */ |
| 1272 | unsigned int cverdefs; |
| 1273 | |
| 1274 | /* Number of symbol version references we are about to emit. */ |
| 1275 | unsigned int cverrefs; |
| 1276 | |
| 1277 | /* Segment flags for the PT_GNU_STACK segment. */ |
| 1278 | unsigned int stack_flags; |
| 1279 | |
| 1280 | /* Should the PT_GNU_RELRO segment be emitted? */ |
| 1281 | bfd_boolean relro; |
| 1282 | |
| 1283 | /* Symbol version definitions in external objects. */ |
| 1284 | Elf_Internal_Verdef *verdef; |
| 1285 | |
| 1286 | /* Symbol version references to external objects. */ |
| 1287 | Elf_Internal_Verneed *verref; |
| 1288 | |
| 1289 | /* The Irix 5 support uses two virtual sections, which represent |
| 1290 | text/data symbols defined in dynamic objects. */ |
| 1291 | asymbol *elf_data_symbol; |
| 1292 | asymbol *elf_text_symbol; |
| 1293 | asection *elf_data_section; |
| 1294 | asection *elf_text_section; |
| 1295 | |
| 1296 | /* Whether a dyanmic object was specified normally on the linker |
| 1297 | command line, or was specified when --as-needed was in effect, |
| 1298 | or was found via a DT_NEEDED entry. */ |
| 1299 | enum dynamic_lib_link_class dyn_lib_class; |
| 1300 | |
| 1301 | /* This is set to TRUE if the object was created by the backend |
| 1302 | linker. */ |
| 1303 | bfd_boolean linker; |
| 1304 | |
| 1305 | /* Irix 5 often screws up the symbol table, sorting local symbols |
| 1306 | after global symbols. This flag is set if the symbol table in |
| 1307 | this BFD appears to be screwed up. If it is, we ignore the |
| 1308 | sh_info field in the symbol table header, and always read all the |
| 1309 | symbols. */ |
| 1310 | bfd_boolean bad_symtab; |
| 1311 | |
| 1312 | /* Used to determine if the e_flags field has been initialized */ |
| 1313 | bfd_boolean flags_init; |
| 1314 | }; |
| 1315 | |
| 1316 | #define elf_tdata(bfd) ((bfd) -> tdata.elf_obj_data) |
| 1317 | #define elf_elfheader(bfd) (elf_tdata(bfd) -> elf_header) |
| 1318 | #define elf_elfsections(bfd) (elf_tdata(bfd) -> elf_sect_ptr) |
| 1319 | #define elf_numsections(bfd) (elf_tdata(bfd) -> num_elf_sections) |
| 1320 | #define elf_shstrtab(bfd) (elf_tdata(bfd) -> strtab_ptr) |
| 1321 | #define elf_onesymtab(bfd) (elf_tdata(bfd) -> symtab_section) |
| 1322 | #define elf_symtab_shndx(bfd) (elf_tdata(bfd) -> symtab_shndx_section) |
| 1323 | #define elf_dynsymtab(bfd) (elf_tdata(bfd) -> dynsymtab_section) |
| 1324 | #define elf_dynversym(bfd) (elf_tdata(bfd) -> dynversym_section) |
| 1325 | #define elf_dynverdef(bfd) (elf_tdata(bfd) -> dynverdef_section) |
| 1326 | #define elf_dynverref(bfd) (elf_tdata(bfd) -> dynverref_section) |
| 1327 | #define elf_num_locals(bfd) (elf_tdata(bfd) -> num_locals) |
| 1328 | #define elf_num_globals(bfd) (elf_tdata(bfd) -> num_globals) |
| 1329 | #define elf_section_syms(bfd) (elf_tdata(bfd) -> section_syms) |
| 1330 | #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> num_section_syms) |
| 1331 | #define core_prpsinfo(bfd) (elf_tdata(bfd) -> prpsinfo) |
| 1332 | #define core_prstatus(bfd) (elf_tdata(bfd) -> prstatus) |
| 1333 | #define elf_gp(bfd) (elf_tdata(bfd) -> gp) |
| 1334 | #define elf_gp_size(bfd) (elf_tdata(bfd) -> gp_size) |
| 1335 | #define elf_sym_hashes(bfd) (elf_tdata(bfd) -> sym_hashes) |
| 1336 | #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts) |
| 1337 | #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets) |
| 1338 | #define elf_local_got_ents(bfd) (elf_tdata(bfd) -> local_got.ents) |
| 1339 | #define elf_dt_name(bfd) (elf_tdata(bfd) -> dt_name) |
| 1340 | #define elf_dyn_lib_class(bfd) (elf_tdata(bfd) -> dyn_lib_class) |
| 1341 | #define elf_bad_symtab(bfd) (elf_tdata(bfd) -> bad_symtab) |
| 1342 | #define elf_flags_init(bfd) (elf_tdata(bfd) -> flags_init) |
| 1343 | \f |
| 1344 | extern void _bfd_elf_swap_verdef_in |
| 1345 | (bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *); |
| 1346 | extern void _bfd_elf_swap_verdef_out |
| 1347 | (bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *); |
| 1348 | extern void _bfd_elf_swap_verdaux_in |
| 1349 | (bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *); |
| 1350 | extern void _bfd_elf_swap_verdaux_out |
| 1351 | (bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *); |
| 1352 | extern void _bfd_elf_swap_verneed_in |
| 1353 | (bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *); |
| 1354 | extern void _bfd_elf_swap_verneed_out |
| 1355 | (bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *); |
| 1356 | extern void _bfd_elf_swap_vernaux_in |
| 1357 | (bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *); |
| 1358 | extern void _bfd_elf_swap_vernaux_out |
| 1359 | (bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *); |
| 1360 | extern void _bfd_elf_swap_versym_in |
| 1361 | (bfd *, const Elf_External_Versym *, Elf_Internal_Versym *); |
| 1362 | extern void _bfd_elf_swap_versym_out |
| 1363 | (bfd *, const Elf_Internal_Versym *, Elf_External_Versym *); |
| 1364 | |
| 1365 | extern int _bfd_elf_section_from_bfd_section |
| 1366 | (bfd *, asection *); |
| 1367 | extern char *bfd_elf_string_from_elf_section |
| 1368 | (bfd *, unsigned, unsigned); |
| 1369 | extern char *bfd_elf_get_str_section |
| 1370 | (bfd *, unsigned); |
| 1371 | extern Elf_Internal_Sym *bfd_elf_get_elf_syms |
| 1372 | (bfd *, Elf_Internal_Shdr *, size_t, size_t, Elf_Internal_Sym *, void *, |
| 1373 | Elf_External_Sym_Shndx *); |
| 1374 | extern const char *bfd_elf_sym_name |
| 1375 | (bfd *, Elf_Internal_Shdr *, Elf_Internal_Sym *); |
| 1376 | |
| 1377 | extern bfd_boolean _bfd_elf_copy_private_bfd_data |
| 1378 | (bfd *, bfd *); |
| 1379 | extern bfd_boolean _bfd_elf_print_private_bfd_data |
| 1380 | (bfd *, void *); |
| 1381 | extern void bfd_elf_print_symbol |
| 1382 | (bfd *, void *, asymbol *, bfd_print_symbol_type); |
| 1383 | |
| 1384 | extern void _bfd_elf_sprintf_vma |
| 1385 | (bfd *, char *, bfd_vma); |
| 1386 | extern void _bfd_elf_fprintf_vma |
| 1387 | (bfd *, void *, bfd_vma); |
| 1388 | |
| 1389 | extern unsigned int _bfd_elf_eh_frame_address_size |
| 1390 | (bfd *, asection *); |
| 1391 | extern bfd_byte _bfd_elf_encode_eh_address |
| 1392 | (bfd *abfd, struct bfd_link_info *info, asection *osec, bfd_vma offset, |
| 1393 | asection *loc_sec, bfd_vma loc_offset, bfd_vma *encoded); |
| 1394 | extern bfd_boolean _bfd_elf_can_make_relative |
| 1395 | (bfd *input_bfd, struct bfd_link_info *info, asection *eh_frame_section); |
| 1396 | |
| 1397 | extern enum elf_reloc_type_class _bfd_elf_reloc_type_class |
| 1398 | (const Elf_Internal_Rela *); |
| 1399 | extern bfd_vma _bfd_elf_rela_local_sym |
| 1400 | (bfd *, Elf_Internal_Sym *, asection **, Elf_Internal_Rela *); |
| 1401 | extern bfd_vma _bfd_elf_rel_local_sym |
| 1402 | (bfd *, Elf_Internal_Sym *, asection **, bfd_vma); |
| 1403 | extern bfd_vma _bfd_elf_section_offset |
| 1404 | (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
| 1405 | |
| 1406 | extern unsigned long bfd_elf_hash |
| 1407 | (const char *); |
| 1408 | |
| 1409 | extern bfd_reloc_status_type bfd_elf_generic_reloc |
| 1410 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 1411 | extern bfd_boolean bfd_elf_mkobject |
| 1412 | (bfd *); |
| 1413 | extern bfd_boolean bfd_elf_mkcorefile |
| 1414 | (bfd *); |
| 1415 | extern Elf_Internal_Shdr *bfd_elf_find_section |
| 1416 | (bfd *, char *); |
| 1417 | extern bfd_boolean _bfd_elf_make_section_from_shdr |
| 1418 | (bfd *, Elf_Internal_Shdr *, const char *, int); |
| 1419 | extern bfd_boolean _bfd_elf_make_section_from_phdr |
| 1420 | (bfd *, Elf_Internal_Phdr *, int, const char *); |
| 1421 | extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc |
| 1422 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *); |
| 1423 | extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create |
| 1424 | (bfd *); |
| 1425 | extern void _bfd_elf_link_hash_copy_indirect |
| 1426 | (const struct elf_backend_data *, struct elf_link_hash_entry *, |
| 1427 | struct elf_link_hash_entry *); |
| 1428 | extern void _bfd_elf_link_hash_hide_symbol |
| 1429 | (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean); |
| 1430 | extern bfd_boolean _bfd_elf_link_hash_table_init |
| 1431 | (struct elf_link_hash_table *, bfd *, |
| 1432 | struct bfd_hash_entry *(*) |
| 1433 | (struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| 1434 | extern bfd_boolean _bfd_elf_slurp_version_tables |
| 1435 | (bfd *, bfd_boolean); |
| 1436 | extern bfd_boolean _bfd_elf_merge_sections |
| 1437 | (bfd *, struct bfd_link_info *); |
| 1438 | extern bfd_boolean bfd_elf_is_group_section |
| 1439 | (bfd *, const struct bfd_section *); |
| 1440 | extern void _bfd_elf_section_already_linked |
| 1441 | (bfd *, struct bfd_section *); |
| 1442 | extern void bfd_elf_set_group_contents |
| 1443 | (bfd *, asection *, void *); |
| 1444 | extern void _bfd_elf_link_just_syms |
| 1445 | (asection *, struct bfd_link_info *); |
| 1446 | extern bfd_boolean _bfd_elf_copy_private_header_data |
| 1447 | (bfd *, bfd *); |
| 1448 | extern bfd_boolean _bfd_elf_copy_private_symbol_data |
| 1449 | (bfd *, asymbol *, bfd *, asymbol *); |
| 1450 | extern bfd_boolean _bfd_elf_copy_private_section_data |
| 1451 | (bfd *, asection *, bfd *, asection *); |
| 1452 | extern bfd_boolean _bfd_elf_write_object_contents |
| 1453 | (bfd *); |
| 1454 | extern bfd_boolean _bfd_elf_write_corefile_contents |
| 1455 | (bfd *); |
| 1456 | extern bfd_boolean _bfd_elf_set_section_contents |
| 1457 | (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type); |
| 1458 | extern long _bfd_elf_get_symtab_upper_bound |
| 1459 | (bfd *); |
| 1460 | extern long _bfd_elf_canonicalize_symtab |
| 1461 | (bfd *, asymbol **); |
| 1462 | extern long _bfd_elf_get_dynamic_symtab_upper_bound |
| 1463 | (bfd *); |
| 1464 | extern long _bfd_elf_canonicalize_dynamic_symtab |
| 1465 | (bfd *, asymbol **); |
| 1466 | extern long _bfd_elf_get_synthetic_symtab |
| 1467 | (bfd *, long, asymbol **, long, asymbol **, asymbol **); |
| 1468 | extern long _bfd_elf_get_reloc_upper_bound |
| 1469 | (bfd *, sec_ptr); |
| 1470 | extern long _bfd_elf_canonicalize_reloc |
| 1471 | (bfd *, sec_ptr, arelent **, asymbol **); |
| 1472 | extern long _bfd_elf_get_dynamic_reloc_upper_bound |
| 1473 | (bfd *); |
| 1474 | extern long _bfd_elf_canonicalize_dynamic_reloc |
| 1475 | (bfd *, arelent **, asymbol **); |
| 1476 | extern asymbol *_bfd_elf_make_empty_symbol |
| 1477 | (bfd *); |
| 1478 | extern void _bfd_elf_get_symbol_info |
| 1479 | (bfd *, asymbol *, symbol_info *); |
| 1480 | extern bfd_boolean _bfd_elf_is_local_label_name |
| 1481 | (bfd *, const char *); |
| 1482 | extern alent *_bfd_elf_get_lineno |
| 1483 | (bfd *, asymbol *); |
| 1484 | extern bfd_boolean _bfd_elf_set_arch_mach |
| 1485 | (bfd *, enum bfd_architecture, unsigned long); |
| 1486 | extern bfd_boolean _bfd_elf_find_nearest_line |
| 1487 | (bfd *, asection *, asymbol **, bfd_vma, const char **, const char **, |
| 1488 | unsigned int *); |
| 1489 | #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols |
| 1490 | #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
| 1491 | extern int _bfd_elf_sizeof_headers |
| 1492 | (bfd *, bfd_boolean); |
| 1493 | extern bfd_boolean _bfd_elf_new_section_hook |
| 1494 | (bfd *, asection *); |
| 1495 | extern bfd_boolean _bfd_elf_init_reloc_shdr |
| 1496 | (bfd *, Elf_Internal_Shdr *, asection *, bfd_boolean); |
| 1497 | extern const struct bfd_elf_special_section *_bfd_elf_get_sec_type_attr |
| 1498 | (bfd *, const char *); |
| 1499 | |
| 1500 | /* If the target doesn't have reloc handling written yet: */ |
| 1501 | extern void _bfd_elf_no_info_to_howto |
| 1502 | (bfd *, arelent *, Elf_Internal_Rela *); |
| 1503 | |
| 1504 | extern bfd_boolean bfd_section_from_shdr |
| 1505 | (bfd *, unsigned int shindex); |
| 1506 | extern bfd_boolean bfd_section_from_phdr |
| 1507 | (bfd *, Elf_Internal_Phdr *, int); |
| 1508 | |
| 1509 | extern int _bfd_elf_symbol_from_bfd_symbol |
| 1510 | (bfd *, asymbol **); |
| 1511 | |
| 1512 | extern asection *bfd_section_from_r_symndx |
| 1513 | (bfd *, struct sym_sec_cache *, asection *, unsigned long); |
| 1514 | extern asection *bfd_section_from_elf_index |
| 1515 | (bfd *, unsigned int); |
| 1516 | extern struct bfd_strtab_hash *_bfd_elf_stringtab_init |
| 1517 | (void); |
| 1518 | |
| 1519 | extern struct elf_strtab_hash * _bfd_elf_strtab_init |
| 1520 | (void); |
| 1521 | extern void _bfd_elf_strtab_free |
| 1522 | (struct elf_strtab_hash *); |
| 1523 | extern bfd_size_type _bfd_elf_strtab_add |
| 1524 | (struct elf_strtab_hash *, const char *, bfd_boolean); |
| 1525 | extern void _bfd_elf_strtab_addref |
| 1526 | (struct elf_strtab_hash *, bfd_size_type); |
| 1527 | extern void _bfd_elf_strtab_delref |
| 1528 | (struct elf_strtab_hash *, bfd_size_type); |
| 1529 | extern void _bfd_elf_strtab_clear_all_refs |
| 1530 | (struct elf_strtab_hash *); |
| 1531 | extern bfd_size_type _bfd_elf_strtab_size |
| 1532 | (struct elf_strtab_hash *); |
| 1533 | extern bfd_size_type _bfd_elf_strtab_offset |
| 1534 | (struct elf_strtab_hash *, bfd_size_type); |
| 1535 | extern bfd_boolean _bfd_elf_strtab_emit |
| 1536 | (bfd *, struct elf_strtab_hash *); |
| 1537 | extern void _bfd_elf_strtab_finalize |
| 1538 | (struct elf_strtab_hash *); |
| 1539 | |
| 1540 | extern bfd_boolean _bfd_elf_discard_section_eh_frame |
| 1541 | (bfd *, struct bfd_link_info *, asection *, |
| 1542 | bfd_boolean (*) (bfd_vma, void *), struct elf_reloc_cookie *); |
| 1543 | extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr |
| 1544 | (bfd *, struct bfd_link_info *); |
| 1545 | extern bfd_vma _bfd_elf_eh_frame_section_offset |
| 1546 | (bfd *, struct bfd_link_info *, asection *, bfd_vma); |
| 1547 | extern bfd_boolean _bfd_elf_write_section_eh_frame |
| 1548 | (bfd *, struct bfd_link_info *, asection *, bfd_byte *); |
| 1549 | extern bfd_boolean _bfd_elf_write_section_eh_frame_hdr |
| 1550 | (bfd *, struct bfd_link_info *); |
| 1551 | extern bfd_boolean _bfd_elf_maybe_strip_eh_frame_hdr |
| 1552 | (struct bfd_link_info *); |
| 1553 | |
| 1554 | extern bfd_boolean _bfd_elf_merge_symbol |
| 1555 | (bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *, |
| 1556 | asection **, bfd_vma *, unsigned int *, |
| 1557 | struct elf_link_hash_entry **, bfd_boolean *, |
| 1558 | bfd_boolean *, bfd_boolean *, bfd_boolean *); |
| 1559 | |
| 1560 | extern bfd_boolean _bfd_elf_add_default_symbol |
| 1561 | (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
| 1562 | const char *, Elf_Internal_Sym *, asection **, bfd_vma *, |
| 1563 | bfd_boolean *, bfd_boolean); |
| 1564 | |
| 1565 | extern bfd_boolean _bfd_elf_export_symbol |
| 1566 | (struct elf_link_hash_entry *, void *); |
| 1567 | |
| 1568 | extern bfd_boolean _bfd_elf_link_find_version_dependencies |
| 1569 | (struct elf_link_hash_entry *, void *); |
| 1570 | |
| 1571 | extern bfd_boolean _bfd_elf_link_assign_sym_version |
| 1572 | (struct elf_link_hash_entry *, void *); |
| 1573 | |
| 1574 | extern long _bfd_elf_link_lookup_local_dynindx |
| 1575 | (struct bfd_link_info *, bfd *, long); |
| 1576 | extern bfd_boolean _bfd_elf_compute_section_file_positions |
| 1577 | (bfd *, struct bfd_link_info *); |
| 1578 | extern void _bfd_elf_assign_file_positions_for_relocs |
| 1579 | (bfd *); |
| 1580 | extern file_ptr _bfd_elf_assign_file_position_for_section |
| 1581 | (Elf_Internal_Shdr *, file_ptr, bfd_boolean); |
| 1582 | |
| 1583 | extern bfd_boolean _bfd_elf_validate_reloc |
| 1584 | (bfd *, arelent *); |
| 1585 | |
| 1586 | extern bfd_boolean _bfd_elf_link_create_dynamic_sections |
| 1587 | (bfd *, struct bfd_link_info *); |
| 1588 | extern bfd_boolean _bfd_elf_link_omit_section_dynsym |
| 1589 | (bfd *, struct bfd_link_info *, asection *); |
| 1590 | extern bfd_boolean _bfd_elf_create_dynamic_sections |
| 1591 | (bfd *, struct bfd_link_info *); |
| 1592 | extern bfd_boolean _bfd_elf_create_got_section |
| 1593 | (bfd *, struct bfd_link_info *); |
| 1594 | |
| 1595 | extern bfd_boolean _bfd_elfcore_make_pseudosection |
| 1596 | (bfd *, char *, size_t, ufile_ptr); |
| 1597 | extern char *_bfd_elfcore_strndup |
| 1598 | (bfd *, char *, size_t); |
| 1599 | |
| 1600 | extern Elf_Internal_Rela *_bfd_elf_link_read_relocs |
| 1601 | (bfd *, asection *, void *, Elf_Internal_Rela *, bfd_boolean); |
| 1602 | |
| 1603 | extern bfd_boolean _bfd_elf_link_size_reloc_section |
| 1604 | (bfd *, Elf_Internal_Shdr *, asection *); |
| 1605 | |
| 1606 | extern bfd_boolean _bfd_elf_link_output_relocs |
| 1607 | (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *); |
| 1608 | |
| 1609 | extern bfd_boolean _bfd_elf_fix_symbol_flags |
| 1610 | (struct elf_link_hash_entry *, struct elf_info_failed *); |
| 1611 | |
| 1612 | extern bfd_boolean _bfd_elf_adjust_dynamic_symbol |
| 1613 | (struct elf_link_hash_entry *, void *); |
| 1614 | |
| 1615 | extern bfd_boolean _bfd_elf_link_sec_merge_syms |
| 1616 | (struct elf_link_hash_entry *, void *); |
| 1617 | |
| 1618 | extern bfd_boolean _bfd_elf_dynamic_symbol_p |
| 1619 | (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean); |
| 1620 | |
| 1621 | extern bfd_boolean _bfd_elf_symbol_refs_local_p |
| 1622 | (struct elf_link_hash_entry *, struct bfd_link_info *, bfd_boolean); |
| 1623 | |
| 1624 | extern bfd_boolean bfd_elf_match_symbols_in_sections |
| 1625 | (asection *sec1, asection *sec2); |
| 1626 | |
| 1627 | extern bfd_boolean _bfd_elf_setup_group_pointers |
| 1628 | (bfd *); |
| 1629 | |
| 1630 | extern const bfd_target *bfd_elf32_object_p |
| 1631 | (bfd *); |
| 1632 | extern const bfd_target *bfd_elf32_core_file_p |
| 1633 | (bfd *); |
| 1634 | extern char *bfd_elf32_core_file_failing_command |
| 1635 | (bfd *); |
| 1636 | extern int bfd_elf32_core_file_failing_signal |
| 1637 | (bfd *); |
| 1638 | extern bfd_boolean bfd_elf32_core_file_matches_executable_p |
| 1639 | (bfd *, bfd *); |
| 1640 | |
| 1641 | extern void bfd_elf32_swap_symbol_in |
| 1642 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
| 1643 | extern void bfd_elf32_swap_symbol_out |
| 1644 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
| 1645 | extern void bfd_elf32_swap_reloc_in |
| 1646 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
| 1647 | extern void bfd_elf32_swap_reloc_out |
| 1648 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
| 1649 | extern void bfd_elf32_swap_reloca_in |
| 1650 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
| 1651 | extern void bfd_elf32_swap_reloca_out |
| 1652 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
| 1653 | extern void bfd_elf32_swap_phdr_in |
| 1654 | (bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *); |
| 1655 | extern void bfd_elf32_swap_phdr_out |
| 1656 | (bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *); |
| 1657 | extern void bfd_elf32_swap_dyn_in |
| 1658 | (bfd *, const void *, Elf_Internal_Dyn *); |
| 1659 | extern void bfd_elf32_swap_dyn_out |
| 1660 | (bfd *, const Elf_Internal_Dyn *, void *); |
| 1661 | extern long bfd_elf32_slurp_symbol_table |
| 1662 | (bfd *, asymbol **, bfd_boolean); |
| 1663 | extern bfd_boolean bfd_elf32_write_shdrs_and_ehdr |
| 1664 | (bfd *); |
| 1665 | extern int bfd_elf32_write_out_phdrs |
| 1666 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
| 1667 | extern void bfd_elf32_write_relocs |
| 1668 | (bfd *, asection *, void *); |
| 1669 | extern bfd_boolean bfd_elf32_slurp_reloc_table |
| 1670 | (bfd *, asection *, asymbol **, bfd_boolean); |
| 1671 | |
| 1672 | extern const bfd_target *bfd_elf64_object_p |
| 1673 | (bfd *); |
| 1674 | extern const bfd_target *bfd_elf64_core_file_p |
| 1675 | (bfd *); |
| 1676 | extern char *bfd_elf64_core_file_failing_command |
| 1677 | (bfd *); |
| 1678 | extern int bfd_elf64_core_file_failing_signal |
| 1679 | (bfd *); |
| 1680 | extern bfd_boolean bfd_elf64_core_file_matches_executable_p |
| 1681 | (bfd *, bfd *); |
| 1682 | |
| 1683 | extern void bfd_elf64_swap_symbol_in |
| 1684 | (bfd *, const void *, const void *, Elf_Internal_Sym *); |
| 1685 | extern void bfd_elf64_swap_symbol_out |
| 1686 | (bfd *, const Elf_Internal_Sym *, void *, void *); |
| 1687 | extern void bfd_elf64_swap_reloc_in |
| 1688 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
| 1689 | extern void bfd_elf64_swap_reloc_out |
| 1690 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
| 1691 | extern void bfd_elf64_swap_reloca_in |
| 1692 | (bfd *, const bfd_byte *, Elf_Internal_Rela *); |
| 1693 | extern void bfd_elf64_swap_reloca_out |
| 1694 | (bfd *, const Elf_Internal_Rela *, bfd_byte *); |
| 1695 | extern void bfd_elf64_swap_phdr_in |
| 1696 | (bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *); |
| 1697 | extern void bfd_elf64_swap_phdr_out |
| 1698 | (bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *); |
| 1699 | extern void bfd_elf64_swap_dyn_in |
| 1700 | (bfd *, const void *, Elf_Internal_Dyn *); |
| 1701 | extern void bfd_elf64_swap_dyn_out |
| 1702 | (bfd *, const Elf_Internal_Dyn *, void *); |
| 1703 | extern long bfd_elf64_slurp_symbol_table |
| 1704 | (bfd *, asymbol **, bfd_boolean); |
| 1705 | extern bfd_boolean bfd_elf64_write_shdrs_and_ehdr |
| 1706 | (bfd *); |
| 1707 | extern int bfd_elf64_write_out_phdrs |
| 1708 | (bfd *, const Elf_Internal_Phdr *, unsigned int); |
| 1709 | extern void bfd_elf64_write_relocs |
| 1710 | (bfd *, asection *, void *); |
| 1711 | extern bfd_boolean bfd_elf64_slurp_reloc_table |
| 1712 | (bfd *, asection *, asymbol **, bfd_boolean); |
| 1713 | |
| 1714 | extern struct elf_link_hash_entry *_bfd_elf_archive_symbol_lookup |
| 1715 | (bfd *, struct bfd_link_info *, const char *); |
| 1716 | extern bfd_boolean bfd_elf_link_add_symbols |
| 1717 | (bfd *, struct bfd_link_info *); |
| 1718 | extern bfd_boolean _bfd_elf_add_dynamic_entry |
| 1719 | (struct bfd_link_info *, bfd_vma, bfd_vma); |
| 1720 | |
| 1721 | extern bfd_boolean bfd_elf_link_record_dynamic_symbol |
| 1722 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
| 1723 | |
| 1724 | extern int bfd_elf_link_record_local_dynamic_symbol |
| 1725 | (struct bfd_link_info *, bfd *, long); |
| 1726 | |
| 1727 | extern bfd_boolean _bfd_elf_close_and_cleanup |
| 1728 | (bfd *); |
| 1729 | extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn |
| 1730 | (bfd *, arelent *, struct bfd_symbol *, void *, |
| 1731 | asection *, bfd *, char **); |
| 1732 | |
| 1733 | extern bfd_boolean bfd_elf_final_link |
| 1734 | (bfd *, struct bfd_link_info *); |
| 1735 | |
| 1736 | extern bfd_boolean bfd_elf_gc_sections |
| 1737 | (bfd *, struct bfd_link_info *); |
| 1738 | |
| 1739 | extern bfd_boolean bfd_elf_gc_record_vtinherit |
| 1740 | (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
| 1741 | |
| 1742 | extern bfd_boolean bfd_elf_gc_record_vtentry |
| 1743 | (bfd *, asection *, struct elf_link_hash_entry *, bfd_vma); |
| 1744 | |
| 1745 | extern bfd_boolean _bfd_elf_gc_mark |
| 1746 | (struct bfd_link_info *, asection *, |
| 1747 | asection * (*) (asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
| 1748 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
| 1749 | |
| 1750 | extern bfd_boolean bfd_elf_gc_common_finalize_got_offsets |
| 1751 | (bfd *, struct bfd_link_info *); |
| 1752 | |
| 1753 | extern bfd_boolean bfd_elf_gc_common_final_link |
| 1754 | (bfd *, struct bfd_link_info *); |
| 1755 | |
| 1756 | extern bfd_boolean bfd_elf_reloc_symbol_deleted_p |
| 1757 | (bfd_vma, void *); |
| 1758 | |
| 1759 | extern struct elf_segment_map * |
| 1760 | _bfd_elf_make_dynamic_segment |
| 1761 | (bfd *, asection *); |
| 1762 | |
| 1763 | /* Exported interface for writing elf corefile notes. */ |
| 1764 | extern char *elfcore_write_note |
| 1765 | (bfd *, char *, int *, const char *, int, const void *, int); |
| 1766 | extern char *elfcore_write_prpsinfo |
| 1767 | (bfd *, char *, int *, const char *, const char *); |
| 1768 | extern char *elfcore_write_prstatus |
| 1769 | (bfd *, char *, int *, long, int, const void *); |
| 1770 | extern char * elfcore_write_pstatus |
| 1771 | (bfd *, char *, int *, long, int, const void *); |
| 1772 | extern char *elfcore_write_prfpreg |
| 1773 | (bfd *, char *, int *, const void *, int); |
| 1774 | extern char *elfcore_write_prxfpreg |
| 1775 | (bfd *, char *, int *, const void *, int); |
| 1776 | extern char *elfcore_write_lwpstatus |
| 1777 | (bfd *, char *, int *, long, int, const void *); |
| 1778 | |
| 1779 | extern bfd *_bfd_elf32_bfd_from_remote_memory |
| 1780 | (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep, |
| 1781 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)); |
| 1782 | extern bfd *_bfd_elf64_bfd_from_remote_memory |
| 1783 | (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep, |
| 1784 | int (*target_read_memory) (bfd_vma, bfd_byte *, int)); |
| 1785 | |
| 1786 | /* SH ELF specific routine. */ |
| 1787 | |
| 1788 | extern bfd_boolean _sh_elf_set_mach_from_flags |
| 1789 | (bfd *); |
| 1790 | |
| 1791 | /* This is the condition under which finish_dynamic_symbol will be called. |
| 1792 | If our finish_dynamic_symbol isn't called, we'll need to do something |
| 1793 | about initializing any .plt and .got entries in relocate_section. */ |
| 1794 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ |
| 1795 | ((DYN) \ |
| 1796 | && ((SHARED) || !(H)->forced_local) \ |
| 1797 | && ((H)->dynindx != -1 || (H)->forced_local)) |
| 1798 | |
| 1799 | /* This macro is to avoid lots of duplicated code in the body |
| 1800 | of xxx_relocate_section() in the various elfxx-xxxx.c files. */ |
| 1801 | #define RELOC_FOR_GLOBAL_SYMBOL(info, input_bfd, input_section, rel, \ |
| 1802 | r_symndx, symtab_hdr, sym_hashes, \ |
| 1803 | h, sec, relocation, \ |
| 1804 | unresolved_reloc, warned) \ |
| 1805 | do \ |
| 1806 | { \ |
| 1807 | /* It seems this can happen with erroneous or unsupported \ |
| 1808 | input (mixing a.out and elf in an archive, for example.) */ \ |
| 1809 | if (sym_hashes == NULL) \ |
| 1810 | return FALSE; \ |
| 1811 | \ |
| 1812 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; \ |
| 1813 | \ |
| 1814 | while (h->root.type == bfd_link_hash_indirect \ |
| 1815 | || h->root.type == bfd_link_hash_warning) \ |
| 1816 | h = (struct elf_link_hash_entry *) h->root.u.i.link; \ |
| 1817 | \ |
| 1818 | warned = FALSE; \ |
| 1819 | unresolved_reloc = FALSE; \ |
| 1820 | relocation = 0; \ |
| 1821 | if (h->root.type == bfd_link_hash_defined \ |
| 1822 | || h->root.type == bfd_link_hash_defweak) \ |
| 1823 | { \ |
| 1824 | sec = h->root.u.def.section; \ |
| 1825 | if (sec == NULL \ |
| 1826 | || sec->output_section == NULL) \ |
| 1827 | /* Set a flag that will be cleared later if we find a \ |
| 1828 | relocation value for this symbol. output_section \ |
| 1829 | is typically NULL for symbols satisfied by a shared \ |
| 1830 | library. */ \ |
| 1831 | unresolved_reloc = TRUE; \ |
| 1832 | else \ |
| 1833 | relocation = (h->root.u.def.value \ |
| 1834 | + sec->output_section->vma \ |
| 1835 | + sec->output_offset); \ |
| 1836 | } \ |
| 1837 | else if (h->root.type == bfd_link_hash_undefweak) \ |
| 1838 | ; \ |
| 1839 | else if (info->unresolved_syms_in_objects == RM_IGNORE \ |
| 1840 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \ |
| 1841 | ; \ |
| 1842 | else \ |
| 1843 | { \ |
| 1844 | bfd_boolean err; \ |
| 1845 | err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR \ |
| 1846 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT); \ |
| 1847 | if (!info->callbacks->undefined_symbol (info, \ |
| 1848 | h->root.root.string, \ |
| 1849 | input_bfd, \ |
| 1850 | input_section, \ |
| 1851 | rel->r_offset, err)) \ |
| 1852 | return FALSE; \ |
| 1853 | warned = TRUE; \ |
| 1854 | } \ |
| 1855 | } \ |
| 1856 | while (0) |
| 1857 | |
| 1858 | #endif /* _LIBELF_H_ */ |