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   /* If this field is not NULL, it is called by the elf_link_output_sym
 261      phase of a link for each symbol which will appear in the object file.  */
 262   boolean (*elf_backend_link_output_symbol_hook)
 263     PARAMS ((bfd *, struct bfd_link_info *info, const char *,
 264              Elf_Internal_Sym *, asection *));
 265
 266   /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
 267      linker the first time it encounters a dynamic object in the link.
 268      This function must create any sections required for dynamic
 269      linking.  The ABFD argument is a dynamic object.  The .interp,
 270      .dynamic, .dynsym, .dynstr, and .hash functions have already been
 271      created, and this function may modify the section flags if
 272      desired.  This function will normally create the .got and .plt
 273      sections, but different backends have different requirements.  */
 274   boolean (*elf_backend_create_dynamic_sections)
 275     PARAMS ((bfd *abfd, struct bfd_link_info *info));
 276
 277   /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
 278      linker for every symbol which is defined by a dynamic object and
 279      referenced by a regular object.  This is called after all the
 280      input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
 281      function has been called.  The hash table entry should be
 282      bfd_link_hash_defined, and it should be defined in a section from
 283      a dynamic object.  Dynamic object sections are not included in
 284      the final link, and this function is responsible for changing the
 285      value to something which the rest of the link can deal with.
 286      This will normally involve adding an entry to the .plt or .got or
 287      some such section, and setting the symbol to point to that.  */
 288   boolean (*elf_backend_adjust_dynamic_symbol)
 289     PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
 290
 291   /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
 292      linker after all the linker input files have been seen but before
 293      the sections sizes have been set.  This is called after
 294      ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
 295      It is only called when linking against a dynamic object.  It must
 296      set the sizes of the dynamic sections, and may fill in their
 297      contents as well.  The generic ELF linker can handle the .dynsym,
 298      .dynstr and .hash sections.  This function must handle the
 299      .interp section and any sections created by the
 300      CREATE_DYNAMIC_SECTIONS entry point.  */
 301   boolean (*elf_backend_size_dynamic_sections)
 302     PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
 303
 304   /* The RELOCATE_SECTION function is called by the ELF backend linker
 305      to handle the relocations for a section.
 306
 307      The relocs are always passed as Rela structures; if the section
 308      actually uses Rel structures, the r_addend field will always be
 309      zero.
 310
 311      This function is responsible for adjust the section contents as
 312      necessary, and (if using Rela relocs and generating a
 313      relocateable output file) adjusting the reloc addend as
 314      necessary.
 315
 316      This function does not have to worry about setting the reloc
 317      address or the reloc symbol index.
 318
 319      LOCAL_SYMS is a pointer to the swapped in local symbols.
 320
 321      LOCAL_SECTIONS is an array giving the section in the input file
 322      corresponding to the st_shndx field of each local symbol.
 323
 324      The global hash table entry for the global symbols can be found
 325      via elf_sym_hashes (input_bfd).
 326
 327      When generating relocateable output, this function must handle
 328      STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
 329      going to be the section symbol corresponding to the output
 330      section, which means that the addend must be adjusted
 331      accordingly.  */
 332   boolean (*elf_backend_relocate_section)
 333     PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
 334              bfd *input_bfd, asection *input_section, bfd_byte *contents,
 335              Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
 336              asection **local_sections, char *output_names));
 337
 338   /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
 339      linker just before it writes a symbol out to the .dynsym section.
 340      The processor backend may make any required adjustment to the
 341      symbol.  It may also take the opportunity to set contents of the
 342      dynamic sections.  Note that FINISH_DYNAMIC_SYMBOL is called on
 343      all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
 344      on those symbols which are defined by a dynamic object.  */
 345   boolean (*elf_backend_finish_dynamic_symbol)
 346     PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
 347              struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
 348
 349   /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
 350      linker just before it writes all the dynamic sections out to the
 351      output file.  The FINISH_DYNAMIC_SYMBOL will have been called on
 352      all dynamic symbols.  */
 353   boolean (*elf_backend_finish_dynamic_sections)
 354     PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
 355
 356   /* A function to do any beginning processing needed for the ELF file
 357      before building the ELF headers and computing file positions.  */
 358   void (*elf_backend_begin_write_processing)
 359     PARAMS ((bfd *, struct bfd_link_info *));
 360
 361   /* A function to do any final processing needed for the ELF file
 362      before writing it out.  */
 363   void (*elf_backend_final_write_processing)
 364     PARAMS ((bfd *, struct bfd_link_info *));
 365
 366   /* The swapping table to use when dealing with ECOFF information.
 367      Used for the MIPS ELF .mdebug section.  */
 368   const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap;
 369 };
 370
 371 struct elf_sym_extra
 372 {
 373   int elf_sym_num;              /* sym# after locals/globals are reordered */
 374 };
 375
 376 typedef struct elf_sym_extra Elf_Sym_Extra;
 377
 378 struct bfd_elf_section_data {
 379   Elf_Internal_Shdr this_hdr;
 380   Elf_Internal_Shdr rel_hdr;
 381   int this_idx, rel_idx;
 382   struct elf_link_hash_entry **rel_hashes;
 383 };
 384 #define elf_section_data(sec)  ((struct bfd_elf_section_data*)sec->used_by_bfd)
 385 #define shdr_name(abfd,shdr)    (elf_shstrtab (abfd)->tab + (shdr)->sh_name)
 386
 387 #define get_elf_backend_data(abfd) \
 388   ((struct elf_backend_data *) (abfd)->xvec->backend_data)
 389
 390 struct strtab
 391 {
 392   char *tab;
 393   int nentries;
 394   int length;
 395 };
 396
 397 /* Some private data is stashed away for future use using the tdata pointer
 398    in the bfd structure.  */
 399
 400 struct elf_obj_tdata
 401 {
 402   Elf_Internal_Ehdr elf_header[1];      /* Actual data, but ref like ptr */
 403   Elf_Internal_Shdr **elf_sect_ptr;
 404   Elf_Internal_Phdr *phdr;
 405   struct strtab *strtab_ptr;
 406   int num_locals;
 407   int num_globals;
 408   Elf_Sym_Extra *sym_extra;
 409   asymbol **section_syms;       /* STT_SECTION symbols for each section */
 410   int num_section_syms;         /* number of section_syms allocated */
 411   Elf_Internal_Shdr symtab_hdr;
 412   Elf_Internal_Shdr shstrtab_hdr;
 413   Elf_Internal_Shdr strtab_hdr;
 414   Elf_Internal_Shdr dynsymtab_hdr;
 415   Elf_Internal_Shdr dynstrtab_hdr;
 416   int symtab_section, shstrtab_section, strtab_section, dynsymtab_section;
 417   file_ptr next_file_pos;
 418   void *prstatus;               /* The raw /proc prstatus structure */
 419   void *prpsinfo;               /* The raw /proc prpsinfo structure */
 420   bfd_vma gp;                   /* The gp value (MIPS only, for now) */
 421   int gp_size;                  /* The gp size (MIPS only, for now) */
 422
 423   /* A mapping from external symbols to entries in the linker hash
 424      table, used when linking.  This is indexed by the symbol index
 425      minus the sh_info field of the symbol table header.  */
 426   struct elf_link_hash_entry **sym_hashes;
 427
 428   /* The linker ELF emulation code needs to let the backend ELF linker
 429      know what filename should be used for a dynamic object if the
 430      dynamic object is found using a search.  This field is used to
 431      hold that information.  */
 432   const char *dt_needed_name;
 433
 434   /* Irix 5 often screws up the symbol table, sorting local symbols
 435      after global symbols.  This flag is set if the symbol table in
 436      this BFD appears to be screwed up.  If it is, we ignore the
 437      sh_info field in the symbol table header, and always read all the
 438      symbols.  */
 439   boolean bad_symtab;
 440 };
 441
 442 #define elf_tdata(bfd)          ((bfd) -> tdata.elf_obj_data)
 443 #define elf_elfheader(bfd)      (elf_tdata(bfd) -> elf_header)
 444 #define elf_elfsections(bfd)    (elf_tdata(bfd) -> elf_sect_ptr)
 445 #define elf_shstrtab(bfd)       (elf_tdata(bfd) -> strtab_ptr)
 446 #define elf_onesymtab(bfd)      (elf_tdata(bfd) -> symtab_section)
 447 #define elf_dynsymtab(bfd)      (elf_tdata(bfd) -> dynsymtab_section)
 448 #define elf_num_locals(bfd)     (elf_tdata(bfd) -> num_locals)
 449 #define elf_num_globals(bfd)    (elf_tdata(bfd) -> num_globals)
 450 #define elf_sym_extra(bfd)      (elf_tdata(bfd) -> sym_extra)
 451 #define elf_section_syms(bfd)   (elf_tdata(bfd) -> section_syms)
 452 #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> num_section_syms)
 453 #define core_prpsinfo(bfd)      (elf_tdata(bfd) -> prpsinfo)
 454 #define core_prstatus(bfd)      (elf_tdata(bfd) -> prstatus)
 455 #define elf_gp(bfd)             (elf_tdata(bfd) -> gp)
 456 #define elf_gp_size(bfd)        (elf_tdata(bfd) -> gp_size)
 457 #define elf_sym_hashes(bfd)     (elf_tdata(bfd) -> sym_hashes)
 458 #define elf_dt_needed_name(bfd) (elf_tdata(bfd) -> dt_needed_name)
 459 #define elf_bad_symtab(bfd)     (elf_tdata(bfd) -> bad_symtab)
 460 \f
 461 extern char * elf_string_from_elf_section PARAMS ((bfd *, unsigned, unsigned));
 462 extern char * elf_get_str_section PARAMS ((bfd *, unsigned));
 463
 464 #define bfd_elf32_mkobject      bfd_elf_mkobject
 465 #define bfd_elf64_mkobject      bfd_elf_mkobject
 466 #define elf_mkobject            bfd_elf_mkobject
 467
 468 extern unsigned long bfd_elf_hash PARAMS ((CONST unsigned char *));
 469
 470 extern bfd_reloc_status_type bfd_elf_generic_reloc PARAMS ((bfd *,
 471                                                             arelent *,
 472                                                             asymbol *,
 473                                                             PTR,
 474                                                             asection *,
 475                                                             bfd *,
 476                                                             char **));
 477 extern boolean bfd_elf_mkobject PARAMS ((bfd *));
 478 extern Elf_Internal_Shdr *bfd_elf_find_section PARAMS ((bfd *, char *));
 479 extern boolean _bfd_elf_make_section_from_shdr
 480   PARAMS ((bfd *abfd, Elf_Internal_Shdr *hdr, const char *name));
 481 extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
 482   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 483 extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
 484   PARAMS ((bfd *));
 485 extern boolean _bfd_elf_link_hash_table_init
 486   PARAMS ((struct elf_link_hash_table *, bfd *,
 487            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 488                                        struct bfd_hash_table *,
 489                                        const char *)));
 490
 491 extern boolean bfd_elf32_write_object_contents PARAMS ((bfd *));
 492 extern boolean bfd_elf64_write_object_contents PARAMS ((bfd *));
 493
 494 extern const bfd_target *bfd_elf32_object_p PARAMS ((bfd *));
 495 extern const bfd_target *bfd_elf32_core_file_p PARAMS ((bfd *));
 496 extern char *bfd_elf32_core_file_failing_command PARAMS ((bfd *));
 497 extern int bfd_elf32_core_file_failing_signal PARAMS ((bfd *));
 498 extern boolean bfd_elf32_core_file_matches_executable_p PARAMS ((bfd *,
 499                                                                  bfd *));
 500 extern boolean bfd_elf32_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
 501                                                        file_ptr,
 502                                                        bfd_size_type));
 503
 504 extern long bfd_elf32_get_symtab_upper_bound PARAMS ((bfd *));
 505 extern long bfd_elf32_get_symtab PARAMS ((bfd *, asymbol **));
 506 extern long bfd_elf32_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
 507 extern long bfd_elf32_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **));
 508 extern long bfd_elf32_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
 509 extern long bfd_elf32_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
 510                                                   arelent **, asymbol **));
 511 extern asymbol *bfd_elf32_make_empty_symbol PARAMS ((bfd *));
 512 extern void bfd_elf32_print_symbol PARAMS ((bfd *, PTR, asymbol *,
 513                                             bfd_print_symbol_type));
 514 extern void bfd_elf32_get_symbol_info PARAMS ((bfd *, asymbol *,
 515                                                symbol_info *));
 516 extern alent *bfd_elf32_get_lineno PARAMS ((bfd *, asymbol *));
 517 extern boolean bfd_elf32_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
 518                                                 unsigned long));
 519 extern boolean bfd_elf32_find_nearest_line PARAMS ((bfd *, asection *,
 520                                                     asymbol **,
 521                                                     bfd_vma, CONST char **,
 522                                                     CONST char **,
 523                                                     unsigned int *));
 524 extern int bfd_elf32_sizeof_headers PARAMS ((bfd *, boolean));
 525 extern void bfd_elf32__write_relocs PARAMS ((bfd *, asection *, PTR));
 526 extern boolean bfd_elf32_new_section_hook PARAMS ((bfd *, asection *));
 527 extern boolean bfd_elf32_bfd_link_add_symbols
 528   PARAMS ((bfd *, struct bfd_link_info *));
 529 extern boolean bfd_elf32_bfd_final_link
 530   PARAMS ((bfd *, struct bfd_link_info *));
 531
 532 extern void bfd_elf32_swap_symbol_in
 533   PARAMS ((bfd *, Elf32_External_Sym *, Elf_Internal_Sym *));
 534 extern void bfd_elf32_swap_symbol_out
 535   PARAMS ((bfd *, Elf_Internal_Sym *, Elf32_External_Sym *));
 536 extern void bfd_elf32_swap_reloc_in
 537   PARAMS ((bfd *, Elf32_External_Rel *, Elf_Internal_Rel *));
 538 extern void bfd_elf32_swap_reloc_out
 539   PARAMS ((bfd *, Elf_Internal_Rel *, Elf32_External_Rel *));
 540 extern void bfd_elf32_swap_reloca_in
 541   PARAMS ((bfd *, Elf32_External_Rela *, Elf_Internal_Rela *));
 542 extern void bfd_elf32_swap_reloca_out
 543   PARAMS ((bfd *, Elf_Internal_Rela *, Elf32_External_Rela *));
 544 extern void bfd_elf32_swap_dyn_in
 545   PARAMS ((bfd *, const Elf32_External_Dyn *, Elf_Internal_Dyn *));
 546 extern void bfd_elf32_swap_dyn_out
 547   PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf32_External_Dyn *));
 548 extern boolean bfd_elf32_add_dynamic_entry
 549   PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
 550
 551 /* If the target doesn't have reloc handling written yet:  */
 552 extern void bfd_elf32_no_info_to_howto PARAMS ((bfd *, arelent *,
 553                                                 Elf32_Internal_Rela *));
 554
 555 extern const bfd_target *bfd_elf64_object_p PARAMS ((bfd *));
 556 extern const bfd_target *bfd_elf64_core_file_p PARAMS ((bfd *));
 557 extern char *bfd_elf64_core_file_failing_command PARAMS ((bfd *));
 558 extern int bfd_elf64_core_file_failing_signal PARAMS ((bfd *));
 559 extern boolean bfd_elf64_core_file_matches_executable_p PARAMS ((bfd *,
 560                                                                  bfd *));
 561 extern boolean bfd_elf64_set_section_contents PARAMS ((bfd *, sec_ptr, PTR,
 562                                                        file_ptr,
 563                                                        bfd_size_type));
 564
 565 extern long bfd_elf64_get_symtab_upper_bound PARAMS ((bfd *));
 566 extern long bfd_elf64_get_symtab PARAMS ((bfd *, asymbol **));
 567 extern long bfd_elf64_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
 568 extern long bfd_elf64_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **));
 569 extern long bfd_elf64_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
 570 extern long bfd_elf64_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
 571                                                   arelent **, asymbol **));
 572 extern asymbol *bfd_elf64_make_empty_symbol PARAMS ((bfd *));
 573 extern void bfd_elf64_print_symbol PARAMS ((bfd *, PTR, asymbol *,
 574                                             bfd_print_symbol_type));
 575 extern void bfd_elf64_get_symbol_info PARAMS ((bfd *, asymbol *,
 576                                                symbol_info *));
 577 extern alent *bfd_elf64_get_lineno PARAMS ((bfd *, asymbol *));
 578 extern boolean bfd_elf64_set_arch_mach PARAMS ((bfd *, enum bfd_architecture,
 579                                                 unsigned long));
 580 extern boolean bfd_elf64_find_nearest_line PARAMS ((bfd *, asection *,
 581                                                     asymbol **,
 582                                                     bfd_vma, CONST char **,
 583                                                     CONST char **,
 584                                                     unsigned int *));
 585 extern int bfd_elf64_sizeof_headers PARAMS ((bfd *, boolean));
 586 extern void bfd_elf64__write_relocs PARAMS ((bfd *, asection *, PTR));
 587 extern boolean bfd_elf64_new_section_hook PARAMS ((bfd *, asection *));
 588 extern boolean bfd_elf64_bfd_link_add_symbols
 589   PARAMS ((bfd *, struct bfd_link_info *));
 590 extern boolean bfd_elf64_bfd_final_link
 591   PARAMS ((bfd *, struct bfd_link_info *));
 592
 593 extern void bfd_elf64_swap_symbol_in
 594   PARAMS ((bfd *, Elf64_External_Sym *, Elf_Internal_Sym *));
 595 extern void bfd_elf64_swap_symbol_out
 596   PARAMS ((bfd *, Elf_Internal_Sym *, Elf64_External_Sym *));
 597 extern void bfd_elf64_swap_reloc_in
 598   PARAMS ((bfd *, Elf64_External_Rel *, Elf_Internal_Rel *));
 599 extern void bfd_elf64_swap_reloc_out
 600   PARAMS ((bfd *, Elf_Internal_Rel *, Elf64_External_Rel *));
 601 extern void bfd_elf64_swap_reloca_in
 602   PARAMS ((bfd *, Elf64_External_Rela *, Elf_Internal_Rela *));
 603 extern void bfd_elf64_swap_reloca_out
 604   PARAMS ((bfd *, Elf_Internal_Rela *, Elf64_External_Rela *));
 605 extern void bfd_elf64_swap_dyn_in
 606   PARAMS ((bfd *, const Elf64_External_Dyn *, Elf_Internal_Dyn *));
 607 extern void bfd_elf64_swap_dyn_out
 608   PARAMS ((bfd *, const Elf_Internal_Dyn *, Elf64_External_Dyn *));
 609 extern boolean bfd_elf64_add_dynamic_entry
 610   PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
 611
 612 /* If the target doesn't have reloc handling written yet:  */
 613 extern void bfd_elf64_no_info_to_howto PARAMS ((bfd *, arelent *,
 614                                                 Elf64_Internal_Rela *));
 615
 616 #endif /* _LIBELF_H_ */