bfd/libelf.h

   1 /* BFD back-end data structures for ELF files.
   2    Copyright (C) 1992, 1993 Free Software Foundation, Inc.
   3    Written by Cygnus Support.
   4
   5 This file is part of BFD, the Binary File Descriptor library.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 #ifndef _LIBELF_H_
  22 #define _LIBELF_H_ 1
  23
  24 #include "elf/common.h"
  25 #include "elf/internal.h"
  26 #include "elf/external.h"
  27 #include "bfdlink.h"
  28
  29 /* If size isn't specified as 64 or 32, NAME macro should fail.  */
  30 #ifndef NAME
  31 #if ARCH_SIZE==64
  32 #define NAME(x,y) CAT4(x,64,_,y)
  33 #endif
  34 #if ARCH_SIZE==32
  35 #define NAME(x,y) CAT4(x,32,_,y)
  36 #endif
  37 #endif
  38
  39 #ifndef NAME
  40 #define NAME(x,y) CAT4(x,NOSIZE,_,y)
  41 #endif
  42
  43 #define ElfNAME(X)      NAME(Elf,X)
  44 #define elfNAME(X)      NAME(elf,X)
  45
  46 /* Information held for an ELF symbol.  The first field is the
  47    corresponding asymbol.  Every symbol is an ELF file is actually a
  48    pointer to this structure, although it is often handled as a
  49    pointer to an asymbol.  */
  50
  51 typedef struct
  52 {
  53   /* The BFD symbol.  */
  54   asymbol symbol;
  55   /* ELF symbol information.  */
  56   Elf_Internal_Sym internal_elf_sym;
  57   /* Backend specific information.  */
  58   union
  59     {
  60       unsigned int hppa_arg_reloc;
  61       PTR mips_extr;
  62       PTR any;
  63     }
  64   tc_data;
  65 } elf_symbol_type;
  66 \f
  67 /* ELF linker hash table entries.  */
  68
  69 struct elf_link_hash_entry
  70 {
  71   struct bfd_link_hash_entry root;
  72
  73   /* Symbol index in output file.  This is initialized to -1.  It is
  74      set to -2 if the symbol is used by a reloc.  */
  75   long indx;
  76
  77   /* Symbol size.  */
  78   bfd_size_type size;
  79
  80   /* Symbol index as a dynamic symbol.  Initialized to -1, and remains
  81      -1 if this is not a dynamic symbol.  */
  82   long dynindx;
  83
  84   /* String table index in .dynstr if this is a dynamic symbol.  */
  85   unsigned long dynstr_index;
  86
  87   /* If this is a weak defined symbol from a dynamic object, this
  88      field points to a defined symbol with the same value, if there is
  89      one.  Otherwise it is NULL.  */
  90   struct elf_link_hash_entry *weakdef;
  91
  92   /* If this symbol requires an entry in the global offset table, the
  93      processor specific backend uses this field to hold the offset
  94      into the .got section.  If this field is -1, then the symbol does
  95      not require a global offset table entry.  */
  96   bfd_vma got_offset;
  97
  98   /* If this symbol requires an entry in the procedure linkage table,
  99      the processor specific backend uses these two fields to hold the
 100      offset into the procedure linkage section and the offset into the
 101      .got section.  If plt_offset is -1, then the symbol does not
 102      require an entry in the procedure linkage table.  */
 103   bfd_vma plt_offset;
 104
 105   /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.).  */
 106   char type;
 107
 108   /* Some flags; legal values follow.  */
 109   unsigned char elf_link_hash_flags;
 110   /* Symbol is referenced by a non-shared object.  */
 111 #define ELF_LINK_HASH_REF_REGULAR 01
 112   /* Symbol is defined by a non-shared object.  */
 113 #define ELF_LINK_HASH_DEF_REGULAR 02
 114   /* Symbol is referenced by a shared object.  */
 115 #define ELF_LINK_HASH_REF_DYNAMIC 04
 116   /* Symbol is defined by a shared object.  */
 117 #define ELF_LINK_HASH_DEF_DYNAMIC 010
 118   /* Dynamic symbol has been adjustd.  */
 119 #define ELF_LINK_HASH_DYNAMIC_ADJUSTED 020
 120   /* Symbol needs a copy reloc.  */
 121 #define ELF_LINK_HASH_NEEDS_COPY 040
 122   /* Symbol needs a procedure linkage table entry.  */
 123 #define ELF_LINK_HASH_NEEDS_PLT 0100
 124 };
 125
 126 /* ELF linker hash table.  */
 127
 128 struct elf_link_hash_table
 129 {
 130   struct bfd_link_hash_table root;
 131   /* Whether we have created the special dynamic sections required
 132      when linking against or generating a shared object.  */
 133   boolean dynamic_sections_created;
 134   /* The BFD used to hold special sections created by the linker.
 135      This will be the first BFD found which requires these sections to
 136      be created.  */
 137   bfd *dynobj;
 138   /* The number of symbols found in the link which must be put into
 139      the .dynsym section.  */
 140   size_t dynsymcount;
 141   /* The string table of dynamic symbols, which becomes the .dynstr
 142      section.  */
 143   struct bfd_strtab_hash *dynstr;
 144   /* The number of buckets in the hash table in the .hash section.
 145      This is based on the number of dynamic symbols.  */
 146   size_t bucketcount;
 147   /* A linked list of DT_NEEDED names found in dynamic objects
 148      included in the link.  */
 149   struct bfd_elf_link_needed_list *needed;
 150 };
 151
 152 /* Look up an entry in an ELF linker hash table.  */
 153
 154 #define elf_link_hash_lookup(table, string, create, copy, follow)       \
 155   ((struct elf_link_hash_entry *)                                       \
 156    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 157                          (copy), (follow)))
 158
 159 /* Traverse an ELF linker hash table.  */
 160
 161 #define elf_link_hash_traverse(table, func, info)                       \
 162   (bfd_link_hash_traverse                                               \
 163    (&(table)->root,                                                     \
 164     (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \
 165     (info)))
 166
 167 /* Get the ELF linker hash table from a link_info structure.  */
 168
 169 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
 170 \f
 171 /* Constant information held for an ELF backend.  */
 172
 173 struct elf_backend_data
 174 {
 175   /* Whether the backend uses REL or RELA relocations.  FIXME: some
 176      ELF backends use both.  When we need to support one, this whole
 177      approach will need to be changed.  */
 178   int use_rela_p;
 179
 180   /* The architecture for this backend.  */
 181   enum bfd_architecture arch;
 182
 183   /* The ELF machine code (EM_xxxx) for this backend.  */
 184   int elf_machine_code;
 185
 186   /* The maximum page size for this backend.  */
 187   bfd_vma maxpagesize;
 188
 189   /* This is true if the linker should act like collect and gather
 190      global constructors and destructors by name.  This is true for
 191      MIPS ELF because the Irix 5 tools can not handle the .init
 192      section.  */
 193   boolean collect;
 194
 195   /* A function to translate an ELF RELA relocation to a BFD arelent
 196      structure.  */
 197   void (*elf_info_to_howto) PARAMS ((bfd *, arelent *,
 198                                      Elf_Internal_Rela *));
 199
 200   /* A function to translate an ELF REL relocation to a BFD arelent
 201      structure.  */
 202   void (*elf_info_to_howto_rel) PARAMS ((bfd *, arelent *,
 203                                          Elf_Internal_Rel *));
 204
 205   /* A function to determine whether a symbol is global when
 206      partitioning the symbol table into local and global symbols.
 207      This should be NULL for most targets, in which case the correct
 208      thing will be done.  MIPS ELF, at least on the Irix 5, has
 209      special requirements.  */
 210   boolean (*elf_backend_sym_is_global) PARAMS ((bfd *, asymbol *));
 211
 212   /* The remaining functions are hooks which are called only if they
 213      are not NULL.  */
 214
 215   /* A function to permit a backend specific check on whether a
 216      particular BFD format is relevant for an object file, and to
 217      permit the backend to set any global information it wishes.  When
 218      this is called elf_elfheader is set, but anything else should be
 219      used with caution.  If this returns false, the check_format
 220      routine will return a bfd_error_wrong_format error.  */
 221   boolean (*elf_backend_object_p) PARAMS ((bfd *));
 222
 223   /* A function to do additional symbol processing when reading the
 224      ELF symbol table.  This is where any processor-specific special
 225      section indices are handled.  */
 226   void (*elf_backend_symbol_processing) PARAMS ((bfd *, asymbol *));
 227
 228   /* A function to do additional symbol processing after reading the
 229      entire ELF symbol table.  */
 230   boolean (*elf_backend_symbol_table_processing) PARAMS ((bfd *,
 231                                                           elf_symbol_type *,
 232                                                           int));
 233
 234   /* A function to do additional processing on the ELF section header
 235      just before writing it out.  This is used to set the flags and
 236      type fields for some sections, or to actually write out data for
 237      unusual sections.  */
 238   boolean (*elf_backend_section_processing) PARAMS ((bfd *,
 239                                                      Elf32_Internal_Shdr *));
 240
 241   /* A function to handle unusual section types when creating BFD
 242      sections from ELF sections.  */
 243   boolean (*elf_backend_section_from_shdr) PARAMS ((bfd *,
 244                                                     Elf32_Internal_Shdr *,
 245                                                     char *));
 246
 247   /* A function to set up the ELF section header for a BFD section in
 248      preparation for writing it out.  This is where the flags and type
 249      fields are set for unusual sections.  */
 250   boolean (*elf_backend_fake_sections) PARAMS ((bfd *, Elf32_Internal_Shdr *,
 251                                                 asection *));
 252
 253   /* A function to get the ELF section index for a BFD section.  If
 254      this returns true, the section was found.  If it is a normal ELF
 255      section, *RETVAL should be left unchanged.  If it is not a normal
 256      ELF section *RETVAL should be set to the SHN_xxxx index.  */
 257   boolean (*elf_backend_section_from_bfd_section)
 258     PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *retval));
 259
 260   /* If this field is not NULL, it is called by the add_symbols phase
 261      of a link just before adding a symbol to the global linker hash
 262      table.  It may modify any of the fields as it wishes.  If *NAME
 263      is set to NULL, the symbol will be skipped rather than being
 264      added to the hash table.  This function is responsible for
 265      handling all processor dependent symbol bindings and section
 266      indices, and must set at least *FLAGS and *SEC for each processor
 267      dependent case; failure to do so will cause a link error.  */
 268   boolean (*elf_add_symbol_hook)
 269     PARAMS ((bfd *abfd, struct bfd_link_info *info,
 270              const Elf_Internal_Sym *, const char **name,
 271              flagword *flags, asection **sec, bfd_vma *value));
 272
 273   /* If this field is not NULL, it is called by the elf_link_output_sym
 274      phase of a link for each symbol which will appear in the object file.  */
 275   boolean (*elf_backend_link_output_symbol_hook)
 276     PARAMS ((bfd *, struct bfd_link_info *info, const char *,
 277              Elf_Internal_Sym *, asection *));
 278
 279   /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
 280      linker the first time it encounters a dynamic object in the link.
 281      This function must create any sections required for dynamic
 282      linking.  The ABFD argument is a dynamic object.  The .interp,
 283      .dynamic, .dynsym, .dynstr, and .hash functions have already been
 284      created, and this function may modify the section flags if
 285      desired.  This function will normally create the .got and .plt
 286      sections, but different backends have different requirements.  */
 287   boolean (*elf_backend_create_dynamic_sections)
 288     PARAMS ((bfd *abfd, struct bfd_link_info *info));
 289
 290   /* The CHECK_RELOCS function is called by the add_symbols phase of
 291      the ELF backend linker.  It is called once for each section with
 292      relocs of an object file, just after the symbols for the object
 293      file have been added to the global linker hash table.  The
 294      function must look through the relocs and do any special handling
 295      required.  This generally means allocating space in the global
 296      offset table, and perhaps allocating space for a reloc.  The
 297      relocs are always passed as Rela structures; if the section
 298      actually uses Rel structures, the r_addend field will always be
 299      zero.  */
 300   boolean (*check_relocs)
 301     PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o,
 302              const Elf_Internal_Rela *relocs));
 303
 304   /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
 305      linker for every symbol which is defined by a dynamic object and
 306      referenced by a regular object.  This is called after all the
 307      input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
 308      function has been called.  The hash table entry should be
 309      bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
 310      defined in a section from a dynamic object.  Dynamic object
 311      sections are not included in the final link, and this function is
 312      responsible for changing the value to something which the rest of
 313      the link can deal with.  This will normally involve adding an
 314      entry to the .plt or .got or some such section, and setting the
 315      symbol to point to that.  */
 316   boolean (*elf_backend_adjust_dynamic_symbol)
 317     PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
 318
 319   /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
 320      linker after all the linker input files have been seen but before
 321      the sections sizes have been set.  This is called after
 322      ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
 323      It is only called when linking against a dynamic object.  It must
 324      set the sizes of the dynamic sections, and may fill in their
 325      contents as well.  The generic ELF linker can handle the .dynsym,
 326      .dynstr and .hash sections.  This function must handle the
 327      .interp section and any sections created by the
 328      CREATE_DYNAMIC_SECTIONS entry point.  */
 329   boolean (*elf_backend_size_dynamic_sections)
 330     PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
 331
 332   /* The RELOCATE_SECTION function is called by the ELF backend linker
 333      to handle the relocations for a section.
 334
 335      The relocs are always passed as Rela structures; if the section
 336      actually uses Rel structures, the r_addend field will always be
 337      zero.
 338
 339      This function is responsible for adjust the section contents as
 340      necessary, and (if using Rela relocs and generating a
 341      relocateable output file) adjusting the reloc addend as
 342      necessary.
 343
 344      This function does not have to worry about setting the reloc
 345      address or the reloc symbol index.
 346
 347      LOCAL_SYMS is a pointer to the swapped in local symbols.
 348
 349      LOCAL_SECTIONS is an array giving the section in the input file
 350      corresponding to the st_shndx field of each local symbol.
 351
 352      The global hash table entry for the global symbols can be found
 353      via elf_sym_hashes (input_bfd).
 354
 355      When generating relocateable output, this function must handle
 356      STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
 357      going to be the section symbol corresponding to the output
 358      section, which means that the addend must be adjusted
 359      accordingly.  */
 360   boolean (*elf_backend_relocate_section)
 361     PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
 362              bfd *input_bfd, asection *input_section, bfd_byte *contents,
 363              Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
 364              asection **local_sections));
 365
 366   /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
 367      linker just before it writes a symbol out to the .dynsym section.
 368      The processor backend may make any required adjustment to the
 369      symbol.  It may also take the opportunity to set contents of the
 370      dynamic sections.  Note that FINISH_DYNAMIC_SYMBOL is called on
 371      all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
 372      on those symbols which are defined by a dynamic object.  */
 373   boolean (*elf_backend_finish_dynamic_symbol)
 374     PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
 375              struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
 376
 377   /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
 378      linker just before it writes all the dynamic sections out to the
 379      output file.  The FINISH_DYNAMIC_SYMBOL will have been called on
 380      all dynamic symbols.  */
 381   boolean (*elf_backend_finish_dynamic_sections)
 382     PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
 383
 384   /* A function to do any beginning processing needed for the ELF file
 385      before building the ELF headers and computing file positions.  */
 386   void (*elf_backend_begin_write_processing)
 387     PARAMS ((bfd *, struct bfd_link_info *));
 388
 389   /* A function to do any final processing needed for the ELF file
 390      before writing it out.  The LINKER argument is true if this BFD
 391      was created by the ELF backend linker.  */
 392   void (*elf_backend_final_write_processing)
 393     PARAMS ((bfd *, boolean linker));
 394
 395   /* The swapping table to use when dealing with ECOFF information.
 396      Used for the MIPS ELF .mdebug section.  */
 397   const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap;
 398
 399   /* Alternate EM_xxxx machine codes for this backend.  */
 400   int elf_machine_alt1;
 401   int elf_machine_alt2;
 402 };
 403
 404 /* Information stored for each BFD section in an ELF file.  This
 405    structure is allocated by elf_new_section_hook.  */
 406
 407 struct bfd_elf_section_data {
 408   /* The ELF header for this section.  */
 409   Elf_Internal_Shdr this_hdr;
 410   /* The ELF header for the reloc section associated with this
 411      section, if any.  */
 412   Elf_Internal_Shdr rel_hdr;
 413   /* The ELF section number of this section.  Only used for an output
 414      file.  */
 415   int this_idx;
 416   /* The ELF section number of the reloc section associated with this
 417      section, if any.  Only used for an output file.  */
 418   int rel_idx;
 419   /* Used by the backend linker to store the symbol hash table entries
 420      associated with relocs against global symbols.  */
 421   struct elf_link_hash_entry **rel_hashes;
 422   /* A pointer to the swapped relocs.  If the section uses REL relocs,
 423      rather than RELA, all the r_addend fields will be zero.  This
 424      pointer may be NULL.  It is used by the backend linker.  */
 425   Elf_Internal_Rela *relocs;
 426   /* Used by the backend linker when generating a shared library to
 427      record the dynamic symbol index for a section symbol
 428      corresponding to this section.  */
 429   long dynindx;
 430 };
 431
 432 #define elf_section_data(sec)  ((struct bfd_elf_section_data*)sec->used_by_bfd)
 433
 434 #define get_elf_backend_data(abfd) \
 435   ((struct elf_backend_data *) (abfd)->xvec->backend_data)
 436
 437 /* Some private data is stashed away for future use using the tdata pointer
 438    in the bfd structure.  */
 439
 440 struct elf_obj_tdata
 441 {
 442   Elf_Internal_Ehdr elf_header[1];      /* Actual data, but ref like ptr */
 443   Elf_Internal_Shdr **elf_sect_ptr;
 444   Elf_Internal_Phdr *phdr;
 445   struct bfd_strtab_hash *strtab_ptr;
 446   int num_locals;
 447   int num_globals;
 448   asymbol **section_syms;       /* STT_SECTION symbols for each section */
 449   Elf_Internal_Shdr symtab_hdr;
 450   Elf_Internal_Shdr shstrtab_hdr;
 451   Elf_Internal_Shdr strtab_hdr;
 452   Elf_Internal_Shdr dynsymtab_hdr;
 453   Elf_Internal_Shdr dynstrtab_hdr;
 454   int symtab_section, shstrtab_section, strtab_section, dynsymtab_section;
 455   file_ptr next_file_pos;
 456   void *prstatus;               /* The raw /proc prstatus structure */
 457   void *prpsinfo;               /* The raw /proc prpsinfo structure */
 458   bfd_vma gp;                   /* The gp value (MIPS only, for now) */
 459   int gp_size;                  /* The gp size (MIPS only, for now) */
 460
 461   /* This is set to true if the object was created by the backend
 462      linker.  */
 463   boolean linker;
 464
 465   /* A mapping from external symbols to entries in the linker hash
 466      table, used when linking.  This is indexed by the symbol index
 467      minus the sh_info field of the symbol table header.  */
 468   struct elf_link_hash_entry **sym_hashes;
 469
 470   /* A mapping from local symbols to offsets into the global offset
 471      table, used when linking.  This is indexed by the symbol index.  */
 472   bfd_vma *local_got_offsets;
 473
 474   /* The linker ELF emulation code needs to let the backend ELF linker
 475      know what filename should be used for a dynamic object if the
 476      dynamic object is found using a search.  This field is used to
 477      hold that information.  */
 478   const char *dt_needed_name;
 479
 480   /* Irix 5 often screws up the symbol table, sorting local symbols
 481      after global symbols.  This flag is set if the symbol table in
 482      this BFD appears to be screwed up.  If it is, we ignore the
 483      sh_info field in the symbol table header, and always read all the
 484      symbols.  */
 485   boolean bad_symtab;
 486
 487   /* Records the result of `get_program_header_size'.  */
 488   bfd_size_type program_header_size;
 489
 490   /* Used by MIPS ELF find_nearest_line entry point.  The structure
 491      could be included directly in this one, but there's no point to
 492      wasting the memory just for the infrequently called
 493      find_nearest_line.  */
 494   struct mips_elf_find_line *find_line_info;
 495
 496   /* Used by PowerPC to determine if the e_flags field has been intiialized */
 497   boolean ppc_flags_init;
 498 };
 499
 500 #define elf_tdata(bfd)          ((bfd) -> tdata.elf_obj_data)
 501 #define elf_elfheader(bfd)      (elf_tdata(bfd) -> elf_header)
 502 #define elf_elfsections(bfd)    (elf_tdata(bfd) -> elf_sect_ptr)
 503 #define elf_shstrtab(bfd)       (elf_tdata(bfd) -> strtab_ptr)
 504 #define elf_onesymtab(bfd)      (elf_tdata(bfd) -> symtab_section)
 505 #define elf_dynsymtab(bfd)      (elf_tdata(bfd) -> dynsymtab_section)
 506 #define elf_num_locals(bfd)     (elf_tdata(bfd) -> num_locals)
 507 #define elf_num_globals(bfd)    (elf_tdata(bfd) -> num_globals)
 508 #define elf_section_syms(bfd)   (elf_tdata(bfd) -> section_syms)
 509 #define core_prpsinfo(bfd)      (elf_tdata(bfd) -> prpsinfo)
 510 #define core_prstatus(bfd)      (elf_tdata(bfd) -> prstatus)
 511 #define elf_gp(bfd)             (elf_tdata(bfd) -> gp)
 512 #define elf_gp_size(bfd)        (elf_tdata(bfd) -> gp_size)
 513 #define elf_sym_hashes(bfd)     (elf_tdata(bfd) -> sym_hashes)
 514 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got_offsets)
 515 #define elf_dt_needed_name(bfd) (elf_tdata(bfd) -> dt_needed_name)
 516 #define elf_bad_symtab(bfd)     (elf_tdata(bfd) -> bad_symtab)
 517 #define elf_ppc_flags_init(bfd) (elf_tdata(bfd) -> ppc_flags_init)
 518 \f
 519 extern char * elf_string_from_elf_section PARAMS ((bfd *, unsigned, unsigned));
 520 extern char * elf_get_str_section PARAMS ((bfd *, unsigned));
 521
 522 extern void bfd_elf_print_symbol PARAMS ((bfd *, PTR, asymbol *,
 523                                           bfd_print_symbol_type));
 524
 525 #define bfd_elf32_print_symbol  bfd_elf_print_symbol
 526 #define bfd_elf64_print_symbol  bfd_elf_print_symbol
 527 #define bfd_elf32_mkobject      bfd_elf_mkobject
 528 #define bfd_elf64_mkobject      bfd_elf_mkobject
 529 #define elf_mkobject            bfd_elf_mkobject
 530
 531 extern unsigned long bfd_elf_hash PARAMS ((CONST unsigned char *));
 532
 533 extern bfd_reloc_status_type bfd_elf_generic_reloc PARAMS ((bfd *,
 534                                                             arelent *,
 535                                                             asymbol *,
 536                                                             PTR,
 537                                                             asection *,
 538                                                             bfd *,
 539                                                             char **));
 540 extern boolean bfd_elf_mkobject PARAMS ((bfd *));
 541 extern Elf_Internal_Shdr *bfd_elf_find_section PARAMS ((bfd *, char *));
 542 extern boolean _bfd_elf_make_section_from_shdr
 543   PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, const char *name));
 544 extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
 545   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 546 extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
 547   PARAMS ((bfd *));
 548 extern boolean _bfd_elf_link_hash_table_init
 549   PARAMS ((struct elf_link_hash_table *, bfd *,
 550            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 551                                        struct bfd_hash_table *,
 552                                        const char *)));
 553
 554 extern boolean bfd_elf32_write_object_contents PARAMS ((bfd *));
 555 extern boolean bfd_elf64_write_object_contents PARAMS ((bfd *));
 556
 557 extern const bfd_target *bfd_elf32_object_p PARAMS ((bfd *));
 558 extern const bfd_target *bfd_elf32_core_file_p PARAMS ((bfd *));
 559 extern char *bfd_elf32_core_file_failing_command PARAMS ((bfd *));
 560 extern int bfd_elf32_core_file_failing_signal PARAMS ((bfd *));
 561 extern boolean bfd_elf32_core_file_matches_executable_p PARAMS ((bfd *,
 562                                                                  bfd *));
 563 extern boolean bfd_elf32_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
 564                                                        file_ptr,
 565                                                        bfd_size_type));
 566
 567 extern long bfd_elf32_get_symtab_upper_bound PARAMS ((bfd *));
 568 extern long bfd_elf32_get_symtab PARAMS ((bfd *, asymbol **));
 569 extern long bfd_elf32_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
 570 extern long bfd_elf32_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **));
 571 extern long bfd_elf32_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
 572 extern long bfd_elf32_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
 573                                                   arelent **, asymbol **));
 574 extern asymbol *bfd_elf32_make_empty_symbol PARAMS ((bfd *));
 575 extern void bfd_elf32_get_symbol_info PARAMS ((bfd *, asymbol *,
 576                                                symbol_info *));
 577 extern alent *bfd_elf32_get_lineno PARAMS ((bfd *, asymbol *));
 578 extern boolean bfd_elf32_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
 579                                                 unsigned long));
 580 extern boolean bfd_elf32_find_nearest_line PARAMS ((bfd *, asection *,
 581                                                     asymbol **,
 582                                                     bfd_vma, CONST char **,
 583                                                     CONST char **,
 584                                                     unsigned int *));
 585 extern int bfd_elf32_sizeof_headers PARAMS ((bfd *, boolean));
 586 extern boolean bfd_elf32_new_section_hook PARAMS ((bfd *, asection *));
 587 extern boolean bfd_elf32_bfd_link_add_symbols
 588   PARAMS ((bfd *, struct bfd_link_info *));
 589 extern boolean bfd_elf32_bfd_final_link
 590   PARAMS ((bfd *, struct bfd_link_info *));
 591
 592 extern void bfd_elf32_swap_symbol_in
 593   PARAMS ((bfd *, Elf32_External_Sym *, Elf_Internal_Sym *));
 594 extern void bfd_elf32_swap_symbol_out
 595   PARAMS ((bfd *, Elf_Internal_Sym *, Elf32_External_Sym *));
 596 extern void bfd_elf32_swap_reloc_in
 597   PARAMS ((bfd *, Elf32_External_Rel *, Elf_Internal_Rel *));
 598 extern void bfd_elf32_swap_reloc_out
 599   PARAMS ((bfd *, Elf_Internal_Rel *, Elf32_External_Rel *));
 600 extern void bfd_elf32_swap_reloca_in
 601   PARAMS ((bfd *, Elf32_External_Rela *, Elf_Internal_Rela *));
 602 extern void bfd_elf32_swap_reloca_out
 603   PARAMS ((bfd *, Elf_Internal_Rela *, Elf32_External_Rela *));
 604 extern void bfd_elf32_swap_dyn_in
 605   PARAMS ((bfd *, const Elf32_External_Dyn *, Elf_Internal_Dyn *));
 606 extern void bfd_elf32_swap_dyn_out
 607   PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf32_External_Dyn *));
 608 extern boolean bfd_elf32_add_dynamic_entry
 609   PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
 610 extern boolean bfd_elf32_link_create_dynamic_sections
 611   PARAMS ((bfd *, struct bfd_link_info *));
 612 extern boolean bfd_elf32_link_record_dynamic_symbol
 613   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
 614
 615 /* If the target doesn't have reloc handling written yet:  */
 616 extern void bfd_elf32_no_info_to_howto PARAMS ((bfd *, arelent *,
 617                                                 Elf32_Internal_Rela *));
 618
 619 extern const bfd_target *bfd_elf64_object_p PARAMS ((bfd *));
 620 extern const bfd_target *bfd_elf64_core_file_p PARAMS ((bfd *));
 621 extern char *bfd_elf64_core_file_failing_command PARAMS ((bfd *));
 622 extern int bfd_elf64_core_file_failing_signal PARAMS ((bfd *));
 623 extern boolean bfd_elf64_core_file_matches_executable_p PARAMS ((bfd *,
 624                                                                  bfd *));
 625 extern boolean bfd_elf64_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
 626                                                        file_ptr,
 627                                                        bfd_size_type));
 628
 629 extern long bfd_elf64_get_symtab_upper_bound PARAMS ((bfd *));
 630 extern long bfd_elf64_get_symtab PARAMS ((bfd *, asymbol **));
 631 extern long bfd_elf64_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
 632 extern long bfd_elf64_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **));
 633 extern long bfd_elf64_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
 634 extern long bfd_elf64_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
 635                                                   arelent **, asymbol **));
 636 extern asymbol *bfd_elf64_make_empty_symbol PARAMS ((bfd *));
 637 extern void bfd_elf64_get_symbol_info PARAMS ((bfd *, asymbol *,
 638                                                symbol_info *));
 639 extern alent *bfd_elf64_get_lineno PARAMS ((bfd *, asymbol *));
 640 extern boolean bfd_elf64_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
 641                                                 unsigned long));
 642 extern boolean bfd_elf64_find_nearest_line PARAMS ((bfd *, asection *,
 643                                                     asymbol **,
 644                                                     bfd_vma, CONST char **,
 645                                                     CONST char **,
 646                                                     unsigned int *));
 647 extern int bfd_elf64_sizeof_headers PARAMS ((bfd *, boolean));
 648 extern boolean bfd_elf64_new_section_hook PARAMS ((bfd *, asection *));
 649 extern boolean bfd_elf64_bfd_link_add_symbols
 650   PARAMS ((bfd *, struct bfd_link_info *));
 651 extern boolean bfd_elf64_bfd_final_link
 652   PARAMS ((bfd *, struct bfd_link_info *));
 653
 654 extern void bfd_elf64_swap_symbol_in
 655   PARAMS ((bfd *, Elf64_External_Sym *, Elf_Internal_Sym *));
 656 extern void bfd_elf64_swap_symbol_out
 657   PARAMS ((bfd *, Elf_Internal_Sym *, Elf64_External_Sym *));
 658 extern void bfd_elf64_swap_reloc_in
 659   PARAMS ((bfd *, Elf64_External_Rel *, Elf_Internal_Rel *));
 660 extern void bfd_elf64_swap_reloc_out
 661   PARAMS ((bfd *, Elf_Internal_Rel *, Elf64_External_Rel *));
 662 extern void bfd_elf64_swap_reloca_in
 663   PARAMS ((bfd *, Elf64_External_Rela *, Elf_Internal_Rela *));
 664 extern void bfd_elf64_swap_reloca_out
 665   PARAMS ((bfd *, Elf_Internal_Rela *, Elf64_External_Rela *));
 666 extern void bfd_elf64_swap_dyn_in
 667   PARAMS ((bfd *, const Elf64_External_Dyn *, Elf_Internal_Dyn *));
 668 extern void bfd_elf64_swap_dyn_out
 669   PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf64_External_Dyn *));
 670 extern boolean bfd_elf64_add_dynamic_entry
 671   PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
 672 extern boolean bfd_elf64_link_create_dynamic_sections
 673   PARAMS ((bfd *, struct bfd_link_info *));
 674 extern boolean bfd_elf64_link_record_dynamic_symbol
 675   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
 676
 677 /* If the target doesn't have reloc handling written yet:  */
 678 extern void bfd_elf64_no_info_to_howto PARAMS ((bfd *, arelent *,
 679                                                 Elf64_Internal_Rela *));
 680
 681 #endif /* _LIBELF_H_ */