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 alignment (common symbols only).  */
  81   bfd_size_type align;
  82
  83   /* Symbol index as a dynamic symbol.  Initialized to -1, and remains
  84      -1 if this is not a dynamic symbol.  */
  85   long dynindx;
  86
  87   /* String table index in .dynstr if this is a dynamic symbol.  */
  88   unsigned long dynstr_index;
  89
  90   /* If this is a weak defined symbol from a dynamic object, this
  91      field points to a defined symbol with the same value, if there is
  92      one.  Otherwise it is NULL.  */
  93   struct elf_link_hash_entry *weakdef;
  94
  95   /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.).  */
  96   char type;
  97
  98   /* Some flags; legal values follow.  */
  99   unsigned char elf_link_hash_flags;
 100   /* Symbol is referenced by a non-shared object.  */
 101 #define ELF_LINK_HASH_REF_REGULAR 01
 102   /* Symbol is defined by a non-shared object.  */
 103 #define ELF_LINK_HASH_DEF_REGULAR 02
 104   /* Symbol is referenced by a shared object.  */
 105 #define ELF_LINK_HASH_REF_DYNAMIC 04
 106   /* Symbol is defined by a shared object.  */
 107 #define ELF_LINK_HASH_DEF_DYNAMIC 010
 108   /* Symbol is referenced by two or more shared objects.  */
 109 #define ELF_LINK_HASH_REF_DYNAMIC_MULTIPLE 020
 110   /* Symbol is defined by two or more shared objects.  */
 111 #define ELF_LINK_HASH_DEF_DYNAMIC_MULTIPLE 040
 112   /* Dynamic symbol has been adjustd.  */
 113 #define ELF_LINK_HASH_DYNAMIC_ADJUSTED 0100
 114 };
 115
 116 /* ELF linker hash table.  */
 117
 118 struct elf_link_hash_table
 119 {
 120   struct bfd_link_hash_table root;
 121   /* The first dynamic object found during a link.  We create several
 122      special input sections when linking against dynamic objects, and
 123      we simply attach them to the first one found.  */
 124   bfd *dynobj;
 125   /* The number of symbols found in the link which must be put into
 126      the .dynsym section.  */
 127   size_t dynsymcount;
 128   /* The string table of dynamic symbols, which becomes the .dynstr
 129      section.  */
 130   struct strtab *dynstr;
 131   /* The number of buckets in the hash table in the .hash section.
 132      This is based on the number of dynamic symbols.  */
 133   size_t bucketcount;
 134 };
 135
 136 /* Look up an entry in an ELF linker hash table.  */
 137
 138 #define elf_link_hash_lookup(table, string, create, copy, follow)       \
 139   ((struct elf_link_hash_entry *)                                       \
 140    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 141                          (copy), (follow)))
 142
 143 /* Traverse an ELF linker hash table.  */
 144
 145 #define elf_link_hash_traverse(table, func, info)                       \
 146   (bfd_link_hash_traverse                                               \
 147    (&(table)->root,                                                     \
 148     (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \
 149     (info)))
 150
 151 /* Get the ELF linker hash table from a link_info structure.  */
 152
 153 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
 154 \f
 155 /* Constant information held for an ELF backend.  */
 156
 157 struct elf_backend_data
 158 {
 159   /* Whether the backend uses REL or RELA relocations.  FIXME: some
 160      ELF backends use both.  When we need to support one, this whole
 161      approach will need to be changed.  */
 162   int use_rela_p;
 163
 164   /* Whether this backend is 64 bits or not.  FIXME: Who cares?  */
 165   int elf_64_p;
 166
 167   /* The architecture for this backend.  */
 168   enum bfd_architecture arch;
 169
 170   /* The ELF machine code (EM_xxxx) for this backend.  */
 171   int elf_machine_code;
 172
 173   /* The maximum page size for this backend.  */
 174   bfd_vma maxpagesize;
 175
 176   /* This is true if the linker should act like collect and gather
 177      global constructors and destructors by name.  This is true for
 178      MIPS ELF because the Irix 5 tools can not handle the .init
 179      section.  */
 180   boolean collect;
 181
 182   /* A function to translate an ELF RELA relocation to a BFD arelent
 183      structure.  */
 184   void (*elf_info_to_howto) PARAMS ((bfd *, arelent *,
 185                                      Elf_Internal_Rela *));
 186
 187   /* A function to translate an ELF REL relocation to a BFD arelent
 188      structure.  */
 189   void (*elf_info_to_howto_rel) PARAMS ((bfd *, arelent *,
 190                                          Elf_Internal_Rel *));
 191
 192   /* A function to determine whether a symbol is global when
 193      partitioning the symbol table into local and global symbols.
 194      This should be NULL for most targets, in which case the correct
 195      thing will be done.  MIPS ELF, at least on the Irix 5, has
 196      special requirements.  */
 197   boolean (*elf_backend_sym_is_global) PARAMS ((bfd *, asymbol *));
 198
 199   /* The remaining functions are hooks which are called only if they
 200      are not NULL.  */
 201
 202   /* A function to permit a backend specific check on whether a
 203      particular BFD format is relevant for an object file, and to
 204      permit the backend to set any global information it wishes.  When
 205      this is called elf_elfheader is set, but anything else should be
 206      used with caution.  If this returns false, the check_format
 207      routine will return a bfd_error_wrong_format error.  */
 208   boolean (*elf_backend_object_p) PARAMS ((bfd *));
 209
 210   /* A function to do additional symbol processing when reading the
 211      ELF symbol table.  This is where any processor-specific special
 212      section indices are handled.  */
 213   void (*elf_backend_symbol_processing) PARAMS ((bfd *, asymbol *));
 214
 215   /* A function to do additional symbol processing after reading the
 216      entire ELF symbol table.  */
 217   boolean (*elf_backend_symbol_table_processing) PARAMS ((bfd *,
 218                                                           elf_symbol_type *,
 219                                                           int));
 220
 221   /* A function to do additional processing on the ELF section header
 222      just before writing it out.  This is used to set the flags and
 223      type fields for some sections, or to actually write out data for
 224      unusual sections.  */
 225   boolean (*elf_backend_section_processing) PARAMS ((bfd *,
 226                                                      Elf32_Internal_Shdr *));
 227
 228   /* A function to handle unusual section types when creating BFD
 229      sections from ELF sections.  */
 230   boolean (*elf_backend_section_from_shdr) PARAMS ((bfd *,
 231                                                     Elf32_Internal_Shdr *,
 232                                                     char *));
 233
 234   /* A function to set up the ELF section header for a BFD section in
 235      preparation for writing it out.  This is where the flags and type
 236      fields are set for unusual sections.  */
 237   boolean (*elf_backend_fake_sections) PARAMS ((bfd *, Elf32_Internal_Shdr *,
 238                                                 asection *));
 239
 240   /* A function to get the ELF section index for a BFD section.  If
 241      this returns true, the section was found.  If it is a normal ELF
 242      section, *RETVAL should be left unchanged.  If it is not a normal
 243      ELF section *RETVAL should be set to the SHN_xxxx index.  */
 244   boolean (*elf_backend_section_from_bfd_section)
 245     PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *retval));
 246
 247   /* If this field is not NULL, it is called by the add_symbols phase
 248      of a link just before adding a symbol to the global linker hash
 249      table.  It may modify any of the fields as it wishes.  If *NAME
 250      is set to NULL, the symbol will be skipped rather than being
 251      added to the hash table.  This function is responsible for
 252      handling all processor dependent symbol bindings and section
 253      indices, and must set at least *FLAGS and *SEC for each processor
 254      dependent case; failure to do so will cause a link error.  */
 255   boolean (*elf_add_symbol_hook)
 256     PARAMS ((bfd *abfd, struct bfd_link_info *info,
 257              const Elf_Internal_Sym *, const char **name,
 258              flagword *flags, asection **sec, bfd_vma *value));
 259
 260   /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
 261      linker the first time it encounters a dynamic object in the link.
 262      This function must create any sections required for dynamic
 263      linking.  The ABFD argument is a dynamic object.  The .interp,
 264      .dynamic, .dynsym, .dynstr, and .hash functions have already been
 265      created, and this function may modify the section flags if
 266      desired.  This function will normally create the .got and .plt
 267      sections, but different backends have different requirements.  */
 268   boolean (*elf_backend_create_dynamic_sections)
 269     PARAMS ((bfd *abfd, struct bfd_link_info *info));
 270
 271   /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
 272      linker for every symbol which is defined by a dynamic object and
 273      referenced by a regular object.  This is called after all the
 274      input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
 275      function has been called.  The hash table entry should be
 276      bfd_link_hash_defined, and it should be defined in a section from
 277      a dynamic object.  Dynamic object sections are not included in
 278      the final link, and this function is responsible for changing the
 279      value to something which the rest of the link can deal with.
 280      This will normally involve adding an entry to the .plt or .got or
 281      some such section, and setting the symbol to point to that.  */
 282   boolean (*elf_backend_adjust_dynamic_symbol)
 283     PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
 284
 285   /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
 286      linker after all the linker input files have been seen but before
 287      the sections sizes have been set.  This is called after
 288      ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
 289      It is only called when linking against a dynamic object.  It must
 290      set the sizes of the dynamic sections, and may fill in their
 291      contents as well.  The generic ELF linker can handle the .dynsym,
 292      .dynstr and .hash sections.  This function must handle the
 293      .interp section and any sections created by the
 294      CREATE_DYNAMIC_SECTIONS entry point.  */
 295   boolean (*elf_backend_size_dynamic_sections)
 296     PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
 297
 298   /* The RELOCATE_SECTION function is called by the ELF backend linker
 299      to handle the relocations for a section.
 300
 301      The relocs are always passed as Rela structures; if the section
 302      actually uses Rel structures, the r_addend field will always be
 303      zero.
 304
 305      This function is responsible for adjust the section contents as
 306      necessary, and (if using Rela relocs and generating a
 307      relocateable output file) adjusting the reloc addend as
 308      necessary.
 309
 310      This function does not have to worry about setting the reloc
 311      address or the reloc symbol index.
 312
 313      LOCAL_SYMS is a pointer to the swapped in local symbols.
 314
 315      LOCAL_SECTIONS is an array giving the section in the input file
 316      corresponding to the st_shndx field of each local symbol.
 317
 318      The global hash table entry for the global symbols can be found
 319      via elf_sym_hashes (input_bfd).
 320
 321      When generating relocateable output, this function must handle
 322      STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
 323      going to be the section symbol corresponding to the output
 324      section, which means that the addend must be adjusted
 325      accordingly.  */
 326   boolean (*elf_backend_relocate_section)
 327     PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
 328              bfd *input_bfd, asection *input_section, bfd_byte *contents,
 329              Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
 330              asection **local_sections));
 331
 332   /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
 333      linker just before it writes a symbol out to the .dynsym section.
 334      The processor backend may make any required adjustment to the
 335      symbol.  It may also take the opportunity to set contents of the
 336      dynamic sections.  Note that FINISH_DYNAMIC_SYMBOL is called on
 337      all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
 338      on those symbols which are defined by a dynamic object.  */
 339   boolean (*elf_backend_finish_dynamic_symbol)
 340     PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
 341              struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
 342
 343   /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
 344      linker just before it writes all the dynamic sections out to the
 345      output file.  The FINISH_DYNAMIC_SYMBOL will have been called on
 346      all dynamic symbols.  */
 347   boolean (*elf_backend_finish_dynamic_sections)
 348     PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
 349
 350   /* A function to do any beginning processing needed for the ELF file
 351      before building the ELF headers and computing file positions.  */
 352   void (*elf_backend_begin_write_processing) PARAMS ((bfd *));
 353
 354   /* A function to do any final processing needed for the ELF file
 355      before writing it out.  */
 356   void (*elf_backend_final_write_processing) PARAMS ((bfd *));
 357
 358   /* The swapping table to use when dealing with ECOFF information.
 359      Used for the MIPS ELF .mdebug section.  */
 360   const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap;
 361 };
 362
 363 struct elf_sym_extra
 364 {
 365   int elf_sym_num;              /* sym# after locals/globals are reordered */
 366 };
 367
 368 typedef struct elf_sym_extra Elf_Sym_Extra;
 369
 370 struct bfd_elf_section_data {
 371   Elf_Internal_Shdr this_hdr;
 372   Elf_Internal_Shdr rel_hdr;
 373   int this_idx, rel_idx;
 374   struct elf_link_hash_entry **rel_hashes;
 375 };
 376 #define elf_section_data(sec)  ((struct bfd_elf_section_data*)sec->used_by_bfd)
 377 #define shdr_name(abfd,shdr)    (elf_shstrtab (abfd)->tab + (shdr)->sh_name)
 378
 379 #define get_elf_backend_data(abfd) \
 380   ((struct elf_backend_data *) (abfd)->xvec->backend_data)
 381
 382 struct strtab
 383 {
 384   char *tab;
 385   int nentries;
 386   int length;
 387 };
 388
 389 /* Some private data is stashed away for future use using the tdata pointer
 390    in the bfd structure.  */
 391
 392 struct elf_obj_tdata
 393 {
 394   Elf_Internal_Ehdr elf_header[1];      /* Actual data, but ref like ptr */
 395   Elf_Internal_Shdr **elf_sect_ptr;
 396   Elf_Internal_Phdr *phdr;
 397   struct strtab *strtab_ptr;
 398   int num_locals;
 399   int num_globals;
 400   Elf_Sym_Extra *sym_extra;
 401   asymbol **section_syms;       /* STT_SECTION symbols for each section */
 402   int num_section_syms;         /* number of section_syms allocated */
 403   Elf_Internal_Shdr symtab_hdr;
 404   Elf_Internal_Shdr shstrtab_hdr;
 405   Elf_Internal_Shdr strtab_hdr;
 406   Elf_Internal_Shdr dynsymtab_hdr;
 407   Elf_Internal_Shdr dynstrtab_hdr;
 408   int symtab_section, shstrtab_section, strtab_section, dynsymtab_section;
 409   file_ptr next_file_pos;
 410   void *prstatus;               /* The raw /proc prstatus structure */
 411   void *prpsinfo;               /* The raw /proc prpsinfo structure */
 412   bfd_vma gp;                   /* The gp value (MIPS only, for now) */
 413   int gp_size;                  /* The gp size (MIPS only, for now) */
 414
 415   /* A mapping from external symbols to entries in the linker hash
 416      table, used when linking.  This is indexed by the symbol index
 417      minus the sh_info field of the symbol table header.  */
 418   struct elf_link_hash_entry **sym_hashes;
 419 };
 420
 421 #define elf_tdata(bfd)          ((bfd) -> tdata.elf_obj_data)
 422 #define elf_elfheader(bfd)      (elf_tdata(bfd) -> elf_header)
 423 #define elf_elfsections(bfd)    (elf_tdata(bfd) -> elf_sect_ptr)
 424 #define elf_shstrtab(bfd)       (elf_tdata(bfd) -> strtab_ptr)
 425 #define elf_onesymtab(bfd)      (elf_tdata(bfd) -> symtab_section)
 426 #define elf_dynsymtab(bfd)      (elf_tdata(bfd) -> dynsymtab_section)
 427 #define elf_num_locals(bfd)     (elf_tdata(bfd) -> num_locals)
 428 #define elf_num_globals(bfd)    (elf_tdata(bfd) -> num_globals)
 429 #define elf_sym_extra(bfd)      (elf_tdata(bfd) -> sym_extra)
 430 #define elf_section_syms(bfd)   (elf_tdata(bfd) -> section_syms)
 431 #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> num_section_syms)
 432 #define core_prpsinfo(bfd)      (elf_tdata(bfd) -> prpsinfo)
 433 #define core_prstatus(bfd)      (elf_tdata(bfd) -> prstatus)
 434 #define elf_gp(bfd)             (elf_tdata(bfd) -> gp)
 435 #define elf_gp_size(bfd)        (elf_tdata(bfd) -> gp_size)
 436 #define elf_sym_hashes(bfd)     (elf_tdata(bfd) -> sym_hashes)
 437 \f
 438 extern char * elf_string_from_elf_section PARAMS ((bfd *, unsigned, unsigned));
 439 extern char * elf_get_str_section PARAMS ((bfd *, unsigned));
 440
 441 #define bfd_elf32_mkobject      bfd_elf_mkobject
 442 #define bfd_elf64_mkobject      bfd_elf_mkobject
 443 #define elf_mkobject            bfd_elf_mkobject
 444
 445 extern unsigned long bfd_elf_hash PARAMS ((CONST unsigned char *));
 446
 447 extern bfd_reloc_status_type bfd_elf_generic_reloc PARAMS ((bfd *,
 448                                                             arelent *,
 449                                                             asymbol *,
 450                                                             PTR,
 451                                                             asection *,
 452                                                             bfd *,
 453                                                             char **));
 454 extern boolean bfd_elf_mkobject PARAMS ((bfd *));
 455 extern Elf_Internal_Shdr *bfd_elf_find_section PARAMS ((bfd *, char *));
 456 extern boolean _bfd_elf_make_section_from_shdr
 457   PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, const char *name));
 458 extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
 459   PARAMS ((bfd *));
 460
 461 extern boolean bfd_elf32_write_object_contents PARAMS ((bfd *));
 462 extern boolean bfd_elf64_write_object_contents PARAMS ((bfd *));
 463
 464 extern bfd_target *bfd_elf32_object_p PARAMS ((bfd *));
 465 extern bfd_target *bfd_elf32_core_file_p PARAMS ((bfd *));
 466 extern char *bfd_elf32_core_file_failing_command PARAMS ((bfd *));
 467 extern int bfd_elf32_core_file_failing_signal PARAMS ((bfd *));
 468 extern boolean bfd_elf32_core_file_matches_executable_p PARAMS ((bfd *,
 469                                                                  bfd *));
 470 extern boolean bfd_elf32_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
 471                                                        file_ptr,
 472                                                        bfd_size_type));
 473
 474 extern long bfd_elf32_get_symtab_upper_bound PARAMS ((bfd *));
 475 extern long bfd_elf32_get_symtab PARAMS ((bfd *, asymbol **));
 476 extern long bfd_elf32_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
 477 extern long bfd_elf32_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **));
 478 extern long bfd_elf32_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
 479 extern long bfd_elf32_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
 480                                                   arelent **, asymbol **));
 481 extern asymbol *bfd_elf32_make_empty_symbol PARAMS ((bfd *));
 482 extern void bfd_elf32_print_symbol PARAMS ((bfd *, PTR, asymbol *,
 483                                             bfd_print_symbol_type));
 484 extern void bfd_elf32_get_symbol_info PARAMS ((bfd *, asymbol *,
 485                                                symbol_info *));
 486 extern alent *bfd_elf32_get_lineno PARAMS ((bfd *, asymbol *));
 487 extern boolean bfd_elf32_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
 488                                                 unsigned long));
 489 extern boolean bfd_elf32_find_nearest_line PARAMS ((bfd *, asection *,
 490                                                     asymbol **,
 491                                                     bfd_vma, CONST char **,
 492                                                     CONST char **,
 493                                                     unsigned int *));
 494 extern int bfd_elf32_sizeof_headers PARAMS ((bfd *, boolean));
 495 extern void bfd_elf32__write_relocs PARAMS ((bfd *, asection *, PTR));
 496 extern boolean bfd_elf32_new_section_hook PARAMS ((bfd *, asection *));
 497 extern boolean bfd_elf32_bfd_link_add_symbols
 498   PARAMS ((bfd *, struct bfd_link_info *));
 499 extern boolean bfd_elf32_bfd_final_link
 500   PARAMS ((bfd *, struct bfd_link_info *));
 501
 502 extern void bfd_elf32_swap_reloc_in
 503   PARAMS ((bfd *, Elf32_External_Rel *, Elf_Internal_Rel *));
 504 extern void bfd_elf32_swap_reloc_out
 505   PARAMS ((bfd *, Elf_Internal_Rel *, Elf32_External_Rel *));
 506 extern void bfd_elf32_swap_reloca_in
 507   PARAMS ((bfd *, Elf32_External_Rela *, Elf_Internal_Rela *));
 508 extern void bfd_elf32_swap_reloca_out
 509   PARAMS ((bfd *, Elf_Internal_Rela *, Elf32_External_Rela *));
 510 extern void bfd_elf32_swap_dyn_in
 511   PARAMS ((bfd *, const Elf32_External_Dyn *, Elf_Internal_Dyn *));
 512 extern void bfd_elf32_swap_dyn_out
 513   PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf32_External_Dyn *));
 514 extern boolean bfd_elf32_add_dynamic_entry
 515   PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
 516
 517 /* If the target doesn't have reloc handling written yet:  */
 518 extern void bfd_elf32_no_info_to_howto PARAMS ((bfd *, arelent *,
 519                                                 Elf32_Internal_Rela *));
 520
 521 extern bfd_target *bfd_elf64_object_p PARAMS ((bfd *));
 522 extern bfd_target *bfd_elf64_core_file_p PARAMS ((bfd *));
 523 extern char *bfd_elf64_core_file_failing_command PARAMS ((bfd *));
 524 extern int bfd_elf64_core_file_failing_signal PARAMS ((bfd *));
 525 extern boolean bfd_elf64_core_file_matches_executable_p PARAMS ((bfd *,
 526                                                                  bfd *));
 527 extern boolean bfd_elf64_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
 528                                                        file_ptr,
 529                                                        bfd_size_type));
 530
 531 extern long bfd_elf64_get_symtab_upper_bound PARAMS ((bfd *));
 532 extern long bfd_elf64_get_symtab PARAMS ((bfd *, asymbol **));
 533 extern long bfd_elf64_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
 534 extern long bfd_elf64_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **));
 535 extern long bfd_elf64_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
 536 extern long bfd_elf64_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
 537                                                   arelent **, asymbol **));
 538 extern asymbol *bfd_elf64_make_empty_symbol PARAMS ((bfd *));
 539 extern void bfd_elf64_print_symbol PARAMS ((bfd *, PTR, asymbol *,
 540                                             bfd_print_symbol_type));
 541 extern void bfd_elf64_get_symbol_info PARAMS ((bfd *, asymbol *,
 542                                                symbol_info *));
 543 extern alent *bfd_elf64_get_lineno PARAMS ((bfd *, asymbol *));
 544 extern boolean bfd_elf64_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
 545                                                 unsigned long));
 546 extern boolean bfd_elf64_find_nearest_line PARAMS ((bfd *, asection *,
 547                                                     asymbol **,
 548                                                     bfd_vma, CONST char **,
 549                                                     CONST char **,
 550                                                     unsigned int *));
 551 extern int bfd_elf64_sizeof_headers PARAMS ((bfd *, boolean));
 552 extern void bfd_elf64__write_relocs PARAMS ((bfd *, asection *, PTR));
 553 extern boolean bfd_elf64_new_section_hook PARAMS ((bfd *, asection *));
 554 extern boolean bfd_elf64_bfd_link_add_symbols
 555   PARAMS ((bfd *, struct bfd_link_info *));
 556 extern boolean bfd_elf64_bfd_final_link
 557   PARAMS ((bfd *, struct bfd_link_info *));
 558
 559 extern void bfd_elf64_swap_reloc_in
 560   PARAMS ((bfd *, Elf64_External_Rel *, Elf_Internal_Rel *));
 561 extern void bfd_elf64_swap_reloc_out
 562   PARAMS ((bfd *, Elf_Internal_Rel *, Elf64_External_Rel *));
 563 extern void bfd_elf64_swap_reloca_in
 564   PARAMS ((bfd *, Elf64_External_Rela *, Elf_Internal_Rela *));
 565 extern void bfd_elf64_swap_reloca_out
 566   PARAMS ((bfd *, Elf_Internal_Rela *, Elf64_External_Rela *));
 567 extern void bfd_elf64_swap_dyn_in
 568   PARAMS ((bfd *, const Elf64_External_Dyn *, Elf_Internal_Dyn *));
 569 extern void bfd_elf64_swap_dyn_out
 570   PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf64_External_Dyn *));
 571 extern boolean bfd_elf64_add_dynamic_entry
 572   PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
 573
 574 /* If the target doesn't have reloc handling written yet:  */
 575 extern void bfd_elf64_no_info_to_howto PARAMS ((bfd *, arelent *,
 576                                                 Elf64_Internal_Rela *));
 577
 578 #endif /* _LIBELF_H_ */