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 we need to generate a COPY reloc, the processor specific
  93      backend uses this to hold the offset into the reloc section.  */
  94   bfd_vma copy_offset;
  95
  96   /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.).  */
  97   char type;
  98
  99   /* Some flags; legal values follow.  */
 100   unsigned char elf_link_hash_flags;
 101   /* Symbol is referenced by a non-shared object.  */
 102 #define ELF_LINK_HASH_REF_REGULAR 01
 103   /* Symbol is defined by a non-shared object.  */
 104 #define ELF_LINK_HASH_DEF_REGULAR 02
 105   /* Symbol is referenced by a shared object.  */
 106 #define ELF_LINK_HASH_REF_DYNAMIC 04
 107   /* Symbol is defined by a shared object.  */
 108 #define ELF_LINK_HASH_DEF_DYNAMIC 010
 109   /* Symbol is referenced by two or more shared objects.  */
 110 #define ELF_LINK_HASH_REF_DYNAMIC_MULTIPLE 020
 111   /* Symbol is defined by two or more shared objects.  */
 112 #define ELF_LINK_HASH_DEF_DYNAMIC_MULTIPLE 040
 113   /* Dynamic symbol has been adjustd.  */
 114 #define ELF_LINK_HASH_DYNAMIC_ADJUSTED 0100
 115   /* Symbol is defined as weak.  */
 116 #define ELF_LINK_HASH_DEFINED_WEAK 0200
 117 };
 118
 119 /* ELF linker hash table.  */
 120
 121 struct elf_link_hash_table
 122 {
 123   struct bfd_link_hash_table root;
 124   /* The first dynamic object found during a link.  We create several
 125      special input sections when linking against dynamic objects, and
 126      we simply attach them to the first one found.  */
 127   bfd *dynobj;
 128   /* The number of symbols found in the link which must be put into
 129      the .dynsym section.  */
 130   size_t dynsymcount;
 131   /* The string table of dynamic symbols, which becomes the .dynstr
 132      section.  */
 133   struct strtab *dynstr;
 134   /* The number of buckets in the hash table in the .hash section.
 135      This is based on the number of dynamic symbols.  */
 136   size_t bucketcount;
 137 };
 138
 139 /* Look up an entry in an ELF linker hash table.  */
 140
 141 #define elf_link_hash_lookup(table, string, create, copy, follow)       \
 142   ((struct elf_link_hash_entry *)                                       \
 143    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 144                          (copy), (follow)))
 145
 146 /* Traverse an ELF linker hash table.  */
 147
 148 #define elf_link_hash_traverse(table, func, info)                       \
 149   (bfd_link_hash_traverse                                               \
 150    (&(table)->root,                                                     \
 151     (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \
 152     (info)))
 153
 154 /* Get the ELF linker hash table from a link_info structure.  */
 155
 156 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
 157 \f
 158 /* Constant information held for an ELF backend.  */
 159
 160 struct elf_backend_data
 161 {
 162   /* Whether the backend uses REL or RELA relocations.  FIXME: some
 163      ELF backends use both.  When we need to support one, this whole
 164      approach will need to be changed.  */
 165   int use_rela_p;
 166
 167   /* Whether this backend is 64 bits or not.  FIXME: Who cares?  */
 168   int elf_64_p;
 169
 170   /* The architecture for this backend.  */
 171   enum bfd_architecture arch;
 172
 173   /* The ELF machine code (EM_xxxx) for this backend.  */
 174   int elf_machine_code;
 175
 176   /* The maximum page size for this backend.  */
 177   bfd_vma maxpagesize;
 178
 179   /* This is true if the linker should act like collect and gather
 180      global constructors and destructors by name.  This is true for
 181      MIPS ELF because the Irix 5 tools can not handle the .init
 182      section.  */
 183   boolean collect;
 184
 185   /* A function to translate an ELF RELA relocation to a BFD arelent
 186      structure.  */
 187   void (*elf_info_to_howto) PARAMS ((bfd *, arelent *,
 188                                      Elf_Internal_Rela *));
 189
 190   /* A function to translate an ELF REL relocation to a BFD arelent
 191      structure.  */
 192   void (*elf_info_to_howto_rel) PARAMS ((bfd *, arelent *,
 193                                          Elf_Internal_Rel *));
 194
 195   /* A function to determine whether a symbol is global when
 196      partitioning the symbol table into local and global symbols.
 197      This should be NULL for most targets, in which case the correct
 198      thing will be done.  MIPS ELF, at least on the Irix 5, has
 199      special requirements.  */
 200   boolean (*elf_backend_sym_is_global) PARAMS ((bfd *, asymbol *));
 201
 202   /* The remaining functions are hooks which are called only if they
 203      are not NULL.  */
 204
 205   /* A function to permit a backend specific check on whether a
 206      particular BFD format is relevant for an object file, and to
 207      permit the backend to set any global information it wishes.  When
 208      this is called elf_elfheader is set, but anything else should be
 209      used with caution.  If this returns false, the check_format
 210      routine will return a bfd_error_wrong_format error.  */
 211   boolean (*elf_backend_object_p) PARAMS ((bfd *));
 212
 213   /* A function to do additional symbol processing when reading the
 214      ELF symbol table.  This is where any processor-specific special
 215      section indices are handled.  */
 216   void (*elf_backend_symbol_processing) PARAMS ((bfd *, asymbol *));
 217
 218   /* A function to do additional symbol processing after reading the
 219      entire ELF symbol table.  */
 220   boolean (*elf_backend_symbol_table_processing) PARAMS ((bfd *,
 221                                                           elf_symbol_type *,
 222                                                           int));
 223
 224   /* A function to do additional processing on the ELF section header
 225      just before writing it out.  This is used to set the flags and
 226      type fields for some sections, or to actually write out data for
 227      unusual sections.  */
 228   boolean (*elf_backend_section_processing) PARAMS ((bfd *,
 229                                                      Elf32_Internal_Shdr *));
 230
 231   /* A function to handle unusual section types when creating BFD
 232      sections from ELF sections.  */
 233   boolean (*elf_backend_section_from_shdr) PARAMS ((bfd *,
 234                                                     Elf32_Internal_Shdr *,
 235                                                     char *));
 236
 237   /* A function to set up the ELF section header for a BFD section in
 238      preparation for writing it out.  This is where the flags and type
 239      fields are set for unusual sections.  */
 240   boolean (*elf_backend_fake_sections) PARAMS ((bfd *, Elf32_Internal_Shdr *,
 241                                                 asection *));
 242
 243   /* A function to get the ELF section index for a BFD section.  If
 244      this returns true, the section was found.  If it is a normal ELF
 245      section, *RETVAL should be left unchanged.  If it is not a normal
 246      ELF section *RETVAL should be set to the SHN_xxxx index.  */
 247   boolean (*elf_backend_section_from_bfd_section)
 248     PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *retval));
 249
 250   /* If this field is not NULL, it is called by the add_symbols phase
 251      of a link just before adding a symbol to the global linker hash
 252      table.  It may modify any of the fields as it wishes.  If *NAME
 253      is set to NULL, the symbol will be skipped rather than being
 254      added to the hash table.  This function is responsible for
 255      handling all processor dependent symbol bindings and section
 256      indices, and must set at least *FLAGS and *SEC for each processor
 257      dependent case; failure to do so will cause a link error.  */
 258   boolean (*elf_add_symbol_hook)
 259     PARAMS ((bfd *abfd, struct bfd_link_info *info,
 260              const Elf_Internal_Sym *, const char **name,
 261              flagword *flags, asection **sec, bfd_vma *value));
 262
 263   /* If this field is not NULL, it is called by the elf_link_output_sym
 264      phase of a link for each symbol which will appear in the object file.  */
 265   boolean (*elf_backend_link_output_symbol_hook)
 266     PARAMS ((bfd *, struct bfd_link_info *info, const char *,
 267              Elf_Internal_Sym *, asection *));
 268
 269   /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
 270      linker the first time it encounters a dynamic object in the link.
 271      This function must create any sections required for dynamic
 272      linking.  The ABFD argument is a dynamic object.  The .interp,
 273      .dynamic, .dynsym, .dynstr, and .hash functions have already been
 274      created, and this function may modify the section flags if
 275      desired.  This function will normally create the .got and .plt
 276      sections, but different backends have different requirements.  */
 277   boolean (*elf_backend_create_dynamic_sections)
 278     PARAMS ((bfd *abfd, struct bfd_link_info *info));
 279
 280   /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
 281      linker for every symbol which is defined by a dynamic object and
 282      referenced by a regular object.  This is called after all the
 283      input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
 284      function has been called.  The hash table entry should be
 285      bfd_link_hash_defined, and it should be defined in a section from
 286      a dynamic object.  Dynamic object sections are not included in
 287      the final link, and this function is responsible for changing the
 288      value to something which the rest of the link can deal with.
 289      This will normally involve adding an entry to the .plt or .got or
 290      some such section, and setting the symbol to point to that.  */
 291   boolean (*elf_backend_adjust_dynamic_symbol)
 292     PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
 293
 294   /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
 295      linker after all the linker input files have been seen but before
 296      the sections sizes have been set.  This is called after
 297      ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
 298      It is only called when linking against a dynamic object.  It must
 299      set the sizes of the dynamic sections, and may fill in their
 300      contents as well.  The generic ELF linker can handle the .dynsym,
 301      .dynstr and .hash sections.  This function must handle the
 302      .interp section and any sections created by the
 303      CREATE_DYNAMIC_SECTIONS entry point.  */
 304   boolean (*elf_backend_size_dynamic_sections)
 305     PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
 306
 307   /* The RELOCATE_SECTION function is called by the ELF backend linker
 308      to handle the relocations for a section.
 309
 310      The relocs are always passed as Rela structures; if the section
 311      actually uses Rel structures, the r_addend field will always be
 312      zero.
 313
 314      This function is responsible for adjust the section contents as
 315      necessary, and (if using Rela relocs and generating a
 316      relocateable output file) adjusting the reloc addend as
 317      necessary.
 318
 319      This function does not have to worry about setting the reloc
 320      address or the reloc symbol index.
 321
 322      LOCAL_SYMS is a pointer to the swapped in local symbols.
 323
 324      LOCAL_SECTIONS is an array giving the section in the input file
 325      corresponding to the st_shndx field of each local symbol.
 326
 327      The global hash table entry for the global symbols can be found
 328      via elf_sym_hashes (input_bfd).
 329
 330      When generating relocateable output, this function must handle
 331      STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
 332      going to be the section symbol corresponding to the output
 333      section, which means that the addend must be adjusted
 334      accordingly.  */
 335   boolean (*elf_backend_relocate_section)
 336     PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
 337              bfd *input_bfd, asection *input_section, bfd_byte *contents,
 338              Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
 339              asection **local_sections, char *output_names));
 340
 341   /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
 342      linker just before it writes a symbol out to the .dynsym section.
 343      The processor backend may make any required adjustment to the
 344      symbol.  It may also take the opportunity to set contents of the
 345      dynamic sections.  Note that FINISH_DYNAMIC_SYMBOL is called on
 346      all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
 347      on those symbols which are defined by a dynamic object.  */
 348   boolean (*elf_backend_finish_dynamic_symbol)
 349     PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
 350              struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
 351
 352   /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
 353      linker just before it writes all the dynamic sections out to the
 354      output file.  The FINISH_DYNAMIC_SYMBOL will have been called on
 355      all dynamic symbols.  */
 356   boolean (*elf_backend_finish_dynamic_sections)
 357     PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
 358
 359   /* A function to do any beginning processing needed for the ELF file
 360      before building the ELF headers and computing file positions.  */
 361   void (*elf_backend_begin_write_processing)
 362     PARAMS ((bfd *, struct bfd_link_info *));
 363
 364   /* A function to do any final processing needed for the ELF file
 365      before writing it out.  */
 366   void (*elf_backend_final_write_processing)
 367     PARAMS ((bfd *, struct bfd_link_info *));
 368
 369   /* The swapping table to use when dealing with ECOFF information.
 370      Used for the MIPS ELF .mdebug section.  */
 371   const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap;
 372 };
 373
 374 struct elf_sym_extra
 375 {
 376   int elf_sym_num;              /* sym# after locals/globals are reordered */
 377 };
 378
 379 typedef struct elf_sym_extra Elf_Sym_Extra;
 380
 381 /* Information stored for each BFD section in an ELF file.  This
 382    structure is allocated by elf_new_section_hook.  */
 383
 384 struct bfd_elf_section_data {
 385   /* The ELF header for this section.  */
 386   Elf_Internal_Shdr this_hdr;
 387   /* The ELF header for the reloc section associated with this
 388      section, if any.  */
 389   Elf_Internal_Shdr rel_hdr;
 390   /* The ELF section number of this section.  Only used for an output
 391      file.  */
 392   int this_idx;
 393   /* The ELF section number of the reloc section associated with this
 394      section, if any.  Only used for an output file.  */
 395   int rel_idx;
 396   /* Used by the backend linker to store the symbol hash table entries
 397      associated with relocs against global symbols.  */
 398   struct elf_link_hash_entry **rel_hashes;
 399   /* A pointer to the unswapped external relocs; this may be NULL.  */
 400   PTR relocs;
 401 };
 402
 403 #define elf_section_data(sec)  ((struct bfd_elf_section_data*)sec->used_by_bfd)
 404
 405 #define get_elf_backend_data(abfd) \
 406   ((struct elf_backend_data *) (abfd)->xvec->backend_data)
 407
 408 struct strtab
 409 {
 410   char *tab;
 411   int nentries;
 412   int length;
 413 };
 414
 415 /* Some private data is stashed away for future use using the tdata pointer
 416    in the bfd structure.  */
 417
 418 struct elf_obj_tdata
 419 {
 420   Elf_Internal_Ehdr elf_header[1];      /* Actual data, but ref like ptr */
 421   Elf_Internal_Shdr **elf_sect_ptr;
 422   Elf_Internal_Phdr *phdr;
 423   struct strtab *strtab_ptr;
 424   int num_locals;
 425   int num_globals;
 426   Elf_Sym_Extra *sym_extra;
 427   asymbol **section_syms;       /* STT_SECTION symbols for each section */
 428   int num_section_syms;         /* number of section_syms allocated */
 429   Elf_Internal_Shdr symtab_hdr;
 430   Elf_Internal_Shdr shstrtab_hdr;
 431   Elf_Internal_Shdr strtab_hdr;
 432   Elf_Internal_Shdr dynsymtab_hdr;
 433   Elf_Internal_Shdr dynstrtab_hdr;
 434   int symtab_section, shstrtab_section, strtab_section, dynsymtab_section;
 435   file_ptr next_file_pos;
 436   void *prstatus;               /* The raw /proc prstatus structure */
 437   void *prpsinfo;               /* The raw /proc prpsinfo structure */
 438   bfd_vma gp;                   /* The gp value (MIPS only, for now) */
 439   int gp_size;                  /* The gp size (MIPS only, for now) */
 440
 441   /* A mapping from external symbols to entries in the linker hash
 442      table, used when linking.  This is indexed by the symbol index
 443      minus the sh_info field of the symbol table header.  */
 444   struct elf_link_hash_entry **sym_hashes;
 445
 446   /* The linker ELF emulation code needs to let the backend ELF linker
 447      know what filename should be used for a dynamic object if the
 448      dynamic object is found using a search.  This field is used to
 449      hold that information.  */
 450   const char *dt_needed_name;
 451
 452   /* Irix 5 often screws up the symbol table, sorting local symbols
 453      after global symbols.  This flag is set if the symbol table in
 454      this BFD appears to be screwed up.  If it is, we ignore the
 455      sh_info field in the symbol table header, and always read all the
 456      symbols.  */
 457   boolean bad_symtab;
 458 };
 459
 460 #define elf_tdata(bfd)          ((bfd) -> tdata.elf_obj_data)
 461 #define elf_elfheader(bfd)      (elf_tdata(bfd) -> elf_header)
 462 #define elf_elfsections(bfd)    (elf_tdata(bfd) -> elf_sect_ptr)
 463 #define elf_shstrtab(bfd)       (elf_tdata(bfd) -> strtab_ptr)
 464 #define elf_onesymtab(bfd)      (elf_tdata(bfd) -> symtab_section)
 465 #define elf_dynsymtab(bfd)      (elf_tdata(bfd) -> dynsymtab_section)
 466 #define elf_num_locals(bfd)     (elf_tdata(bfd) -> num_locals)
 467 #define elf_num_globals(bfd)    (elf_tdata(bfd) -> num_globals)
 468 #define elf_sym_extra(bfd)      (elf_tdata(bfd) -> sym_extra)
 469 #define elf_section_syms(bfd)   (elf_tdata(bfd) -> section_syms)
 470 #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> num_section_syms)
 471 #define core_prpsinfo(bfd)      (elf_tdata(bfd) -> prpsinfo)
 472 #define core_prstatus(bfd)      (elf_tdata(bfd) -> prstatus)
 473 #define elf_gp(bfd)             (elf_tdata(bfd) -> gp)
 474 #define elf_gp_size(bfd)        (elf_tdata(bfd) -> gp_size)
 475 #define elf_sym_hashes(bfd)     (elf_tdata(bfd) -> sym_hashes)
 476 #define elf_dt_needed_name(bfd) (elf_tdata(bfd) -> dt_needed_name)
 477 #define elf_bad_symtab(bfd)     (elf_tdata(bfd) -> bad_symtab)
 478 \f
 479 extern char * elf_string_from_elf_section PARAMS ((bfd *, unsigned, unsigned));
 480 extern char * elf_get_str_section PARAMS ((bfd *, unsigned));
 481
 482 #define bfd_elf32_mkobject      bfd_elf_mkobject
 483 #define bfd_elf64_mkobject      bfd_elf_mkobject
 484 #define elf_mkobject            bfd_elf_mkobject
 485
 486 extern unsigned long bfd_elf_hash PARAMS ((CONST unsigned char *));
 487
 488 extern bfd_reloc_status_type bfd_elf_generic_reloc PARAMS ((bfd *,
 489                                                             arelent *,
 490                                                             asymbol *,
 491                                                             PTR,
 492                                                             asection *,
 493                                                             bfd *,
 494                                                             char **));
 495 extern boolean bfd_elf_mkobject PARAMS ((bfd *));
 496 extern Elf_Internal_Shdr *bfd_elf_find_section PARAMS ((bfd *, char *));
 497 extern boolean _bfd_elf_make_section_from_shdr
 498   PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, const char *name));
 499 extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
 500   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 501 extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
 502   PARAMS ((bfd *));
 503 extern boolean _bfd_elf_link_hash_table_init
 504   PARAMS ((struct elf_link_hash_table *, bfd *,
 505            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 506                                        struct bfd_hash_table *,
 507                                        const char *)));
 508
 509 extern boolean bfd_elf32_write_object_contents PARAMS ((bfd *));
 510 extern boolean bfd_elf64_write_object_contents PARAMS ((bfd *));
 511
 512 extern const bfd_target *bfd_elf32_object_p PARAMS ((bfd *));
 513 extern const bfd_target *bfd_elf32_core_file_p PARAMS ((bfd *));
 514 extern char *bfd_elf32_core_file_failing_command PARAMS ((bfd *));
 515 extern int bfd_elf32_core_file_failing_signal PARAMS ((bfd *));
 516 extern boolean bfd_elf32_core_file_matches_executable_p PARAMS ((bfd *,
 517                                                                  bfd *));
 518 extern boolean bfd_elf32_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
 519                                                        file_ptr,
 520                                                        bfd_size_type));
 521
 522 extern long bfd_elf32_get_symtab_upper_bound PARAMS ((bfd *));
 523 extern long bfd_elf32_get_symtab PARAMS ((bfd *, asymbol **));
 524 extern long bfd_elf32_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
 525 extern long bfd_elf32_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **));
 526 extern long bfd_elf32_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
 527 extern long bfd_elf32_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
 528                                                   arelent **, asymbol **));
 529 extern asymbol *bfd_elf32_make_empty_symbol PARAMS ((bfd *));
 530 extern void bfd_elf32_print_symbol PARAMS ((bfd *, PTR, asymbol *,
 531                                             bfd_print_symbol_type));
 532 extern void bfd_elf32_get_symbol_info PARAMS ((bfd *, asymbol *,
 533                                                symbol_info *));
 534 extern alent *bfd_elf32_get_lineno PARAMS ((bfd *, asymbol *));
 535 extern boolean bfd_elf32_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
 536                                                 unsigned long));
 537 extern boolean bfd_elf32_find_nearest_line PARAMS ((bfd *, asection *,
 538                                                     asymbol **,
 539                                                     bfd_vma, CONST char **,
 540                                                     CONST char **,
 541                                                     unsigned int *));
 542 extern int bfd_elf32_sizeof_headers PARAMS ((bfd *, boolean));
 543 extern void bfd_elf32__write_relocs PARAMS ((bfd *, asection *, PTR));
 544 extern boolean bfd_elf32_new_section_hook PARAMS ((bfd *, asection *));
 545 extern boolean bfd_elf32_bfd_link_add_symbols
 546   PARAMS ((bfd *, struct bfd_link_info *));
 547 extern boolean bfd_elf32_bfd_final_link
 548   PARAMS ((bfd *, struct bfd_link_info *));
 549
 550 extern void bfd_elf32_swap_symbol_in
 551   PARAMS ((bfd *, Elf32_External_Sym *, Elf_Internal_Sym *));
 552 extern void bfd_elf32_swap_symbol_out
 553   PARAMS ((bfd *, Elf_Internal_Sym *, Elf32_External_Sym *));
 554 extern void bfd_elf32_swap_reloc_in
 555   PARAMS ((bfd *, Elf32_External_Rel *, Elf_Internal_Rel *));
 556 extern void bfd_elf32_swap_reloc_out
 557   PARAMS ((bfd *, Elf_Internal_Rel *, Elf32_External_Rel *));
 558 extern void bfd_elf32_swap_reloca_in
 559   PARAMS ((bfd *, Elf32_External_Rela *, Elf_Internal_Rela *));
 560 extern void bfd_elf32_swap_reloca_out
 561   PARAMS ((bfd *, Elf_Internal_Rela *, Elf32_External_Rela *));
 562 extern void bfd_elf32_swap_dyn_in
 563   PARAMS ((bfd *, const Elf32_External_Dyn *, Elf_Internal_Dyn *));
 564 extern void bfd_elf32_swap_dyn_out
 565   PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf32_External_Dyn *));
 566 extern boolean bfd_elf32_add_dynamic_entry
 567   PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
 568
 569 /* If the target doesn't have reloc handling written yet:  */
 570 extern void bfd_elf32_no_info_to_howto PARAMS ((bfd *, arelent *,
 571                                                 Elf32_Internal_Rela *));
 572
 573 extern const bfd_target *bfd_elf64_object_p PARAMS ((bfd *));
 574 extern const bfd_target *bfd_elf64_core_file_p PARAMS ((bfd *));
 575 extern char *bfd_elf64_core_file_failing_command PARAMS ((bfd *));
 576 extern int bfd_elf64_core_file_failing_signal PARAMS ((bfd *));
 577 extern boolean bfd_elf64_core_file_matches_executable_p PARAMS ((bfd *,
 578                                                                  bfd *));
 579 extern boolean bfd_elf64_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
 580                                                        file_ptr,
 581                                                        bfd_size_type));
 582
 583 extern long bfd_elf64_get_symtab_upper_bound PARAMS ((bfd *));
 584 extern long bfd_elf64_get_symtab PARAMS ((bfd *, asymbol **));
 585 extern long bfd_elf64_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
 586 extern long bfd_elf64_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **));
 587 extern long bfd_elf64_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
 588 extern long bfd_elf64_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
 589                                                   arelent **, asymbol **));
 590 extern asymbol *bfd_elf64_make_empty_symbol PARAMS ((bfd *));
 591 extern void bfd_elf64_print_symbol PARAMS ((bfd *, PTR, asymbol *,
 592                                             bfd_print_symbol_type));
 593 extern void bfd_elf64_get_symbol_info PARAMS ((bfd *, asymbol *,
 594                                                symbol_info *));
 595 extern alent *bfd_elf64_get_lineno PARAMS ((bfd *, asymbol *));
 596 extern boolean bfd_elf64_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
 597                                                 unsigned long));
 598 extern boolean bfd_elf64_find_nearest_line PARAMS ((bfd *, asection *,
 599                                                     asymbol **,
 600                                                     bfd_vma, CONST char **,
 601                                                     CONST char **,
 602                                                     unsigned int *));
 603 extern int bfd_elf64_sizeof_headers PARAMS ((bfd *, boolean));
 604 extern void bfd_elf64__write_relocs PARAMS ((bfd *, asection *, PTR));
 605 extern boolean bfd_elf64_new_section_hook PARAMS ((bfd *, asection *));
 606 extern boolean bfd_elf64_bfd_link_add_symbols
 607   PARAMS ((bfd *, struct bfd_link_info *));
 608 extern boolean bfd_elf64_bfd_final_link
 609   PARAMS ((bfd *, struct bfd_link_info *));
 610
 611 extern void bfd_elf64_swap_symbol_in
 612   PARAMS ((bfd *, Elf64_External_Sym *, Elf_Internal_Sym *));
 613 extern void bfd_elf64_swap_symbol_out
 614   PARAMS ((bfd *, Elf_Internal_Sym *, Elf64_External_Sym *));
 615 extern void bfd_elf64_swap_reloc_in
 616   PARAMS ((bfd *, Elf64_External_Rel *, Elf_Internal_Rel *));
 617 extern void bfd_elf64_swap_reloc_out
 618   PARAMS ((bfd *, Elf_Internal_Rel *, Elf64_External_Rel *));
 619 extern void bfd_elf64_swap_reloca_in
 620   PARAMS ((bfd *, Elf64_External_Rela *, Elf_Internal_Rela *));
 621 extern void bfd_elf64_swap_reloca_out
 622   PARAMS ((bfd *, Elf_Internal_Rela *, Elf64_External_Rela *));
 623 extern void bfd_elf64_swap_dyn_in
 624   PARAMS ((bfd *, const Elf64_External_Dyn *, Elf_Internal_Dyn *));
 625 extern void bfd_elf64_swap_dyn_out
 626   PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf64_External_Dyn *));
 627 extern boolean bfd_elf64_add_dynamic_entry
 628   PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
 629
 630 /* If the target doesn't have reloc handling written yet:  */
 631 extern void bfd_elf64_no_info_to_howto PARAMS ((bfd *, arelent *,
 632                                                 Elf64_Internal_Rela *));
 633
 634 #endif /* _LIBELF_H_ */