bfd/elf-bfd.h

   1 /* BFD back-end data structures for ELF files.
   2    Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
   3    2002 Free Software Foundation, Inc.
   4    Written by Cygnus Support.
   5
   6 This file is part of BFD, the Binary File Descriptor library.
   7
   8 This program is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2 of the License, or
  11 (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program; if not, write to the Free Software
  20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  21
  22 #ifndef _LIBELF_H_
  23 #define _LIBELF_H_ 1
  24
  25 #include "elf/common.h"
  26 #include "elf/internal.h"
  27 #include "elf/external.h"
  28 #include "bfdlink.h"
  29
  30 /* The number of entries in a section is its size divided by the size
  31    of a single entry.  This is normally only applicable to reloc and
  32    symbol table sections.  */
  33 #define NUM_SHDR_ENTRIES(shdr) ((shdr)->sh_size / (shdr)->sh_entsize)
  34
  35 /* If size isn't specified as 64 or 32, NAME macro should fail.  */
  36 /* Do not "beautify" the CONCAT* macro args.  Traditional C will not
  37    remove whitespace added here, and thus will fail to concatenate
  38    the tokens.  */
  39 #ifndef NAME
  40 #if ARCH_SIZE==64
  41 #define NAME(x,y) CONCAT4 (x,64,_,y)
  42 #endif
  43 #if ARCH_SIZE==32
  44 #define NAME(x,y) CONCAT4 (x,32,_,y)
  45 #endif
  46 #endif
  47
  48 #ifndef NAME
  49 #define NAME(x,y) CONCAT4 (x,NOSIZE,_,y)
  50 #endif
  51
  52 #define ElfNAME(X)      NAME(Elf,X)
  53 #define elfNAME(X)      NAME(elf,X)
  54
  55 /* Information held for an ELF symbol.  The first field is the
  56    corresponding asymbol.  Every symbol is an ELF file is actually a
  57    pointer to this structure, although it is often handled as a
  58    pointer to an asymbol.  */
  59
  60 typedef struct
  61 {
  62   /* The BFD symbol.  */
  63   asymbol symbol;
  64   /* ELF symbol information.  */
  65   Elf_Internal_Sym internal_elf_sym;
  66   /* Backend specific information.  */
  67   union
  68     {
  69       unsigned int hppa_arg_reloc;
  70       PTR mips_extr;
  71       PTR any;
  72     }
  73   tc_data;
  74
  75   /* Version information.  This is from an Elf_Internal_Versym
  76      structure in a SHT_GNU_versym section.  It is zero if there is no
  77      version information.  */
  78   unsigned short version;
  79
  80 } elf_symbol_type;
  81 \f
  82 struct elf_strtab_hash;
  83
  84 /* ELF linker hash table entries.  */
  85
  86 struct elf_link_hash_entry
  87 {
  88   struct bfd_link_hash_entry root;
  89
  90   /* Symbol index in output file.  This is initialized to -1.  It is
  91      set to -2 if the symbol is used by a reloc.  */
  92   long indx;
  93
  94   /* Symbol index as a dynamic symbol.  Initialized to -1, and remains
  95      -1 if this is not a dynamic symbol.  */
  96   /* ??? Note that this is consistently used as a synonym for tests
  97      against whether we can perform various simplifying transformations
  98      to the code.  (E.g. changing a pc-relative jump to a PLT entry
  99      into a pc-relative jump to the target function.)  That test, which
 100      is often relatively complex, and someplaces wrong or incomplete,
 101      should really be replaced by a predicate in elflink.c.
 102
 103      End result: this field -1 does not indicate that the symbol is
 104      not in the dynamic symbol table, but rather that the symbol is
 105      not visible outside this DSO.  */
 106   long dynindx;
 107
 108   /* String table index in .dynstr if this is a dynamic symbol.  */
 109   unsigned long dynstr_index;
 110
 111   /* Hash value of the name computed using the ELF hash function.  */
 112   unsigned long elf_hash_value;
 113
 114   /* If this is a weak defined symbol from a dynamic object, this
 115      field points to a defined symbol with the same value, if there is
 116      one.  Otherwise it is NULL.  */
 117   struct elf_link_hash_entry *weakdef;
 118
 119   /* If this symbol is used in the linker created sections, the processor
 120      specific backend uses this field to map the field into the offset
 121      from the beginning of the section.  */
 122   struct elf_linker_section_pointers *linker_section_pointer;
 123
 124   /* Version information.  */
 125   union
 126   {
 127     /* This field is used for a symbol which is not defined in a
 128        regular object.  It points to the version information read in
 129        from the dynamic object.  */
 130     Elf_Internal_Verdef *verdef;
 131     /* This field is used for a symbol which is defined in a regular
 132        object.  It is set up in size_dynamic_sections.  It points to
 133        the version information we should write out for this symbol.  */
 134     struct bfd_elf_version_tree *vertree;
 135   } verinfo;
 136
 137   /* Virtual table entry use information.  This array is nominally of size
 138      size/sizeof(target_void_pointer), though we have to be able to assume
 139      and track a size while the symbol is still undefined.  It is indexed
 140      via offset/sizeof(target_void_pointer).  */
 141   size_t vtable_entries_size;
 142   boolean *vtable_entries_used;
 143
 144   /* Virtual table derivation info.  */
 145   struct elf_link_hash_entry *vtable_parent;
 146
 147   /* If this symbol requires an entry in the global offset table, the
 148      processor specific backend uses this field to track usage and
 149      final offset.  We use a union and two names primarily to document
 150      the intent of any particular piece of code.  The field should be
 151      used as a count until size_dynamic_sections, at which point the
 152      contents of the .got is fixed.  Afterward, if this field is -1,
 153      then the symbol does not require a global offset table entry.  */
 154   union
 155     {
 156       bfd_signed_vma refcount;
 157       bfd_vma offset;
 158     } got;
 159
 160   /* Same, but tracks a procedure linkage table entry.  */
 161   union
 162     {
 163       bfd_signed_vma refcount;
 164       bfd_vma offset;
 165     } plt;
 166
 167   /* Symbol size.  */
 168   bfd_size_type size;
 169
 170   /* Symbol type (STT_NOTYPE, STT_OBJECT, etc.).  */
 171   char type;
 172
 173   /* Symbol st_other value, symbol visibility.  */
 174   unsigned char other;
 175
 176   /* Some flags; legal values follow.  */
 177   unsigned short elf_link_hash_flags;
 178   /* Symbol is referenced by a non-shared object.  */
 179 #define ELF_LINK_HASH_REF_REGULAR 01
 180   /* Symbol is defined by a non-shared object.  */
 181 #define ELF_LINK_HASH_DEF_REGULAR 02
 182   /* Symbol is referenced by a shared object.  */
 183 #define ELF_LINK_HASH_REF_DYNAMIC 04
 184   /* Symbol is defined by a shared object.  */
 185 #define ELF_LINK_HASH_DEF_DYNAMIC 010
 186   /* Symbol has a non-weak reference from a non-shared object.  */
 187 #define ELF_LINK_HASH_REF_REGULAR_NONWEAK 020
 188   /* Dynamic symbol has been adjustd.  */
 189 #define ELF_LINK_HASH_DYNAMIC_ADJUSTED 040
 190   /* Symbol needs a copy reloc.  */
 191 #define ELF_LINK_HASH_NEEDS_COPY 0100
 192   /* Symbol needs a procedure linkage table entry.  */
 193 #define ELF_LINK_HASH_NEEDS_PLT 0200
 194   /* Symbol appears in a non-ELF input file.  */
 195 #define ELF_LINK_NON_ELF 0400
 196   /* Symbol should be marked as hidden in the version information.  */
 197 #define ELF_LINK_HIDDEN 01000
 198   /* Symbol was forced to local scope due to a version script file.  */
 199 #define ELF_LINK_FORCED_LOCAL 02000
 200   /* Symbol was marked during garbage collection.  */
 201 #define ELF_LINK_HASH_MARK 04000
 202   /* Symbol is referenced by a non-GOT/non-PLT relocation.  This is
 203      not currently set by all the backends.  */
 204 #define ELF_LINK_NON_GOT_REF 010000
 205 };
 206
 207 /* Records local symbols to be emitted in the dynamic symbol table.  */
 208
 209 struct elf_link_local_dynamic_entry
 210 {
 211   struct elf_link_local_dynamic_entry *next;
 212
 213   /* The input bfd this symbol came from.  */
 214   bfd *input_bfd;
 215
 216   /* The index of the local symbol being copied.  */
 217   long input_indx;
 218
 219   /* The index in the outgoing dynamic symbol table.  */
 220   long dynindx;
 221
 222   /* A copy of the input symbol.  */
 223   Elf_Internal_Sym isym;
 224 };
 225
 226 enum elf_link_info_type
 227 {
 228   ELF_INFO_TYPE_NONE,
 229   ELF_INFO_TYPE_STABS,
 230   ELF_INFO_TYPE_MERGE,
 231   ELF_INFO_TYPE_EH_FRAME,
 232   ELF_INFO_TYPE_EH_FRAME_HDR,
 233   ELF_INFO_TYPE_LAST
 234 };
 235
 236 /* ELF linker hash table.  */
 237
 238 struct elf_link_hash_table
 239 {
 240   struct bfd_link_hash_table root;
 241
 242   /* Whether we have created the special dynamic sections required
 243      when linking against or generating a shared object.  */
 244   boolean dynamic_sections_created;
 245
 246   /* The BFD used to hold special sections created by the linker.
 247      This will be the first BFD found which requires these sections to
 248      be created.  */
 249   bfd *dynobj;
 250
 251   /* The value to use when initialising got.refcount/offset and
 252      plt.refcount/offset in an elf_link_hash_entry.  Set to zero when
 253      the values are refcounts.  Set to -1 in size_dynamic_sections
 254      when the values may be offsets.  */
 255   bfd_signed_vma init_refcount;
 256
 257   /* The number of symbols found in the link which must be put into
 258      the .dynsym section.  */
 259   bfd_size_type dynsymcount;
 260
 261   /* The string table of dynamic symbols, which becomes the .dynstr
 262      section.  */
 263   struct elf_strtab_hash *dynstr;
 264
 265   /* The number of buckets in the hash table in the .hash section.
 266      This is based on the number of dynamic symbols.  */
 267   bfd_size_type bucketcount;
 268
 269   /* A linked list of DT_NEEDED names found in dynamic objects
 270      included in the link.  */
 271   struct bfd_link_needed_list *needed;
 272
 273   /* The _GLOBAL_OFFSET_TABLE_ symbol.  */
 274   struct elf_link_hash_entry *hgot;
 275
 276   /* A pointer to information used to link stabs in sections.  */
 277   PTR stab_info;
 278
 279   /* A pointer to information used to merge SEC_MERGE sections.  */
 280   PTR merge_info;
 281
 282   /* A linked list of local symbols to be added to .dynsym.  */
 283   struct elf_link_local_dynamic_entry *dynlocal;
 284
 285   /* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
 286      objects included in the link.  */
 287   struct bfd_link_needed_list *runpath;
 288 };
 289
 290 /* Look up an entry in an ELF linker hash table.  */
 291
 292 #define elf_link_hash_lookup(table, string, create, copy, follow)       \
 293   ((struct elf_link_hash_entry *)                                       \
 294    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 295                          (copy), (follow)))
 296
 297 /* Traverse an ELF linker hash table.  */
 298
 299 #define elf_link_hash_traverse(table, func, info)                       \
 300   (bfd_link_hash_traverse                                               \
 301    (&(table)->root,                                                     \
 302     (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \
 303     (info)))
 304
 305 /* Get the ELF linker hash table from a link_info structure.  */
 306
 307 #define elf_hash_table(p) ((struct elf_link_hash_table *) ((p)->hash))
 308
 309 /* Returns true if the hash table is a struct elf_link_hash_table.  */
 310 #define is_elf_hash_table(p)                                            \
 311   ((p)->hash->type == bfd_link_elf_hash_table)
 312
 313 /* Used by bfd_section_from_r_symndx to cache a small number of local
 314    symbol to section mappings.  */
 315 #define LOCAL_SYM_CACHE_SIZE 32
 316 struct sym_sec_cache
 317 {
 318   bfd *abfd;
 319   unsigned long indx[LOCAL_SYM_CACHE_SIZE];
 320   asection *sec[LOCAL_SYM_CACHE_SIZE];
 321 };
 322 \f
 323 /* Constant information held for an ELF backend.  */
 324
 325 struct elf_size_info {
 326   unsigned char sizeof_ehdr, sizeof_phdr, sizeof_shdr;
 327   unsigned char sizeof_rel, sizeof_rela, sizeof_sym, sizeof_dyn, sizeof_note;
 328
 329   /* The size of entries in the .hash section.  */
 330   unsigned char sizeof_hash_entry;
 331
 332   /* The number of internal relocations to allocate per external
 333      relocation entry.  */
 334   unsigned char int_rels_per_ext_rel;
 335
 336   unsigned char arch_size, file_align;
 337   unsigned char elfclass, ev_current;
 338   int (*write_out_phdrs)
 339     PARAMS ((bfd *, const Elf_Internal_Phdr *, unsigned int));
 340   boolean (*write_shdrs_and_ehdr)
 341     PARAMS ((bfd *));
 342   void (*write_relocs)
 343     PARAMS ((bfd *, asection *, PTR));
 344   void (*swap_symbol_out)
 345     PARAMS ((bfd *, const Elf_Internal_Sym *, PTR, PTR));
 346   boolean (*slurp_reloc_table)
 347     PARAMS ((bfd *, asection *, asymbol **, boolean));
 348   long (*slurp_symbol_table)
 349     PARAMS ((bfd *, asymbol **, boolean));
 350   void (*swap_dyn_in)
 351     PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
 352   void (*swap_dyn_out)
 353     PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR));
 354
 355   /* This function, if defined, is called to swap in a REL
 356      relocation.  If an external relocation corresponds to more than
 357      one internal relocation, then all relocations are swapped in at
 358      once.  */
 359   void (*swap_reloc_in)
 360     PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rel *));
 361
 362   /* This function, if defined, is called to swap out a REL
 363      relocation.  */
 364   void (*swap_reloc_out)
 365     PARAMS ((bfd *, const Elf_Internal_Rel *, bfd_byte *));
 366
 367   /* This function, if defined, is called to swap in a RELA
 368      relocation.  If an external relocation corresponds to more than
 369      one internal relocation, then all relocations are swapped in at
 370      once.  */
 371   void (*swap_reloca_in)
 372     PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *));
 373
 374   /* This function, if defined, is called to swap out a RELA
 375      relocation.  */
 376   void (*swap_reloca_out)
 377     PARAMS ((bfd *, const Elf_Internal_Rela *, bfd_byte *));
 378
 379 };
 380
 381 #define elf_symbol_from(ABFD,S) \
 382         (((S)->the_bfd->xvec->flavour == bfd_target_elf_flavour \
 383           && (S)->the_bfd->tdata.elf_obj_data != 0) \
 384          ? (elf_symbol_type *) (S) \
 385          : 0)
 386
 387 enum elf_reloc_type_class {
 388   reloc_class_normal,
 389   reloc_class_relative,
 390   reloc_class_plt,
 391   reloc_class_copy
 392 };
 393
 394 struct elf_reloc_cookie
 395 {
 396   Elf_Internal_Rela *rels, *rel, *relend;
 397   PTR locsyms;
 398   PTR locsym_shndx;
 399   bfd *abfd;
 400   size_t locsymcount;
 401   size_t extsymoff;
 402   struct elf_link_hash_entry **sym_hashes;
 403   boolean bad_symtab;
 404 };
 405
 406 struct elf_backend_data
 407 {
 408   /* The architecture for this backend.  */
 409   enum bfd_architecture arch;
 410
 411   /* The ELF machine code (EM_xxxx) for this backend.  */
 412   int elf_machine_code;
 413
 414   /* The maximum page size for this backend.  */
 415   bfd_vma maxpagesize;
 416
 417   /* A function to translate an ELF RELA relocation to a BFD arelent
 418      structure.  */
 419   void (*elf_info_to_howto)
 420     PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
 421
 422   /* A function to translate an ELF REL relocation to a BFD arelent
 423      structure.  */
 424   void (*elf_info_to_howto_rel)
 425     PARAMS ((bfd *, arelent *, Elf_Internal_Rel *));
 426
 427   /* A function to determine whether a symbol is global when
 428      partitioning the symbol table into local and global symbols.
 429      This should be NULL for most targets, in which case the correct
 430      thing will be done.  MIPS ELF, at least on the Irix 5, has
 431      special requirements.  */
 432   boolean (*elf_backend_sym_is_global)
 433     PARAMS ((bfd *, asymbol *));
 434
 435   /* The remaining functions are hooks which are called only if they
 436      are not NULL.  */
 437
 438   /* A function to permit a backend specific check on whether a
 439      particular BFD format is relevant for an object file, and to
 440      permit the backend to set any global information it wishes.  When
 441      this is called elf_elfheader is set, but anything else should be
 442      used with caution.  If this returns false, the check_format
 443      routine will return a bfd_error_wrong_format error.  */
 444   boolean (*elf_backend_object_p)
 445     PARAMS ((bfd *));
 446
 447   /* A function to do additional symbol processing when reading the
 448      ELF symbol table.  This is where any processor-specific special
 449      section indices are handled.  */
 450   void (*elf_backend_symbol_processing)
 451     PARAMS ((bfd *, asymbol *));
 452
 453   /* A function to do additional symbol processing after reading the
 454      entire ELF symbol table.  */
 455   boolean (*elf_backend_symbol_table_processing)
 456     PARAMS ((bfd *, elf_symbol_type *, unsigned int));
 457
 458    /* A function to set the type of the info field.  Processor-specific
 459      types should be handled here.  */
 460   int (*elf_backend_get_symbol_type)
 461     PARAMS (( Elf_Internal_Sym *, int));
 462
 463   /* A function to do additional processing on the ELF section header
 464      just before writing it out.  This is used to set the flags and
 465      type fields for some sections, or to actually write out data for
 466      unusual sections.  */
 467   boolean (*elf_backend_section_processing)
 468     PARAMS ((bfd *, Elf32_Internal_Shdr *));
 469
 470   /* A function to handle unusual section types when creating BFD
 471      sections from ELF sections.  */
 472   boolean (*elf_backend_section_from_shdr)
 473     PARAMS ((bfd *, Elf32_Internal_Shdr *, char *));
 474
 475   /* A function to convert machine dependent section header flags to
 476      BFD internal section header flags.  */
 477   boolean (*elf_backend_section_flags)
 478     PARAMS ((flagword *, Elf32_Internal_Shdr *));
 479
 480   /* A function to handle unusual program segment types when creating BFD
 481      sections from ELF program segments.  */
 482   boolean (*elf_backend_section_from_phdr)
 483     PARAMS ((bfd *, Elf32_Internal_Phdr *, int));
 484
 485   /* A function to set up the ELF section header for a BFD section in
 486      preparation for writing it out.  This is where the flags and type
 487      fields are set for unusual sections.  */
 488   boolean (*elf_backend_fake_sections)
 489     PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *));
 490
 491   /* A function to get the ELF section index for a BFD section.  If
 492      this returns true, the section was found.  If it is a normal ELF
 493      section, *RETVAL should be left unchanged.  If it is not a normal
 494      ELF section *RETVAL should be set to the SHN_xxxx index.  */
 495   boolean (*elf_backend_section_from_bfd_section)
 496     PARAMS ((bfd *, asection *, int *retval));
 497
 498   /* If this field is not NULL, it is called by the add_symbols phase
 499      of a link just before adding a symbol to the global linker hash
 500      table.  It may modify any of the fields as it wishes.  If *NAME
 501      is set to NULL, the symbol will be skipped rather than being
 502      added to the hash table.  This function is responsible for
 503      handling all processor dependent symbol bindings and section
 504      indices, and must set at least *FLAGS and *SEC for each processor
 505      dependent case; failure to do so will cause a link error.  */
 506   boolean (*elf_add_symbol_hook)
 507     PARAMS ((bfd *abfd, struct bfd_link_info *info,
 508              const Elf_Internal_Sym *, const char **name,
 509              flagword *flags, asection **sec, bfd_vma *value));
 510
 511   /* If this field is not NULL, it is called by the elf_link_output_sym
 512      phase of a link for each symbol which will appear in the object file.  */
 513   boolean (*elf_backend_link_output_symbol_hook)
 514     PARAMS ((bfd *, struct bfd_link_info *info, const char *,
 515              Elf_Internal_Sym *, asection *));
 516
 517   /* The CREATE_DYNAMIC_SECTIONS function is called by the ELF backend
 518      linker the first time it encounters a dynamic object in the link.
 519      This function must create any sections required for dynamic
 520      linking.  The ABFD argument is a dynamic object.  The .interp,
 521      .dynamic, .dynsym, .dynstr, and .hash functions have already been
 522      created, and this function may modify the section flags if
 523      desired.  This function will normally create the .got and .plt
 524      sections, but different backends have different requirements.  */
 525   boolean (*elf_backend_create_dynamic_sections)
 526     PARAMS ((bfd *abfd, struct bfd_link_info *info));
 527
 528   /* The CHECK_RELOCS function is called by the add_symbols phase of
 529      the ELF backend linker.  It is called once for each section with
 530      relocs of an object file, just after the symbols for the object
 531      file have been added to the global linker hash table.  The
 532      function must look through the relocs and do any special handling
 533      required.  This generally means allocating space in the global
 534      offset table, and perhaps allocating space for a reloc.  The
 535      relocs are always passed as Rela structures; if the section
 536      actually uses Rel structures, the r_addend field will always be
 537      zero.  */
 538   boolean (*check_relocs)
 539     PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o,
 540              const Elf_Internal_Rela *relocs));
 541
 542   /* The ADJUST_DYNAMIC_SYMBOL function is called by the ELF backend
 543      linker for every symbol which is defined by a dynamic object and
 544      referenced by a regular object.  This is called after all the
 545      input files have been seen, but before the SIZE_DYNAMIC_SECTIONS
 546      function has been called.  The hash table entry should be
 547      bfd_link_hash_defined ore bfd_link_hash_defweak, and it should be
 548      defined in a section from a dynamic object.  Dynamic object
 549      sections are not included in the final link, and this function is
 550      responsible for changing the value to something which the rest of
 551      the link can deal with.  This will normally involve adding an
 552      entry to the .plt or .got or some such section, and setting the
 553      symbol to point to that.  */
 554   boolean (*elf_backend_adjust_dynamic_symbol)
 555     PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
 556
 557   /* The ALWAYS_SIZE_SECTIONS function is called by the backend linker
 558      after all the linker input files have been seen but before the
 559      section sizes have been set.  This is called after
 560      ADJUST_DYNAMIC_SYMBOL, but before SIZE_DYNAMIC_SECTIONS.  */
 561   boolean (*elf_backend_always_size_sections)
 562     PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
 563
 564   /* The SIZE_DYNAMIC_SECTIONS function is called by the ELF backend
 565      linker after all the linker input files have been seen but before
 566      the sections sizes have been set.  This is called after
 567      ADJUST_DYNAMIC_SYMBOL has been called on all appropriate symbols.
 568      It is only called when linking against a dynamic object.  It must
 569      set the sizes of the dynamic sections, and may fill in their
 570      contents as well.  The generic ELF linker can handle the .dynsym,
 571      .dynstr and .hash sections.  This function must handle the
 572      .interp section and any sections created by the
 573      CREATE_DYNAMIC_SECTIONS entry point.  */
 574   boolean (*elf_backend_size_dynamic_sections)
 575     PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
 576
 577   /* The RELOCATE_SECTION function is called by the ELF backend linker
 578      to handle the relocations for a section.
 579
 580      The relocs are always passed as Rela structures; if the section
 581      actually uses Rel structures, the r_addend field will always be
 582      zero.
 583
 584      This function is responsible for adjust the section contents as
 585      necessary, and (if using Rela relocs and generating a
 586      relocateable output file) adjusting the reloc addend as
 587      necessary.
 588
 589      This function does not have to worry about setting the reloc
 590      address or the reloc symbol index.
 591
 592      LOCAL_SYMS is a pointer to the swapped in local symbols.
 593
 594      LOCAL_SECTIONS is an array giving the section in the input file
 595      corresponding to the st_shndx field of each local symbol.
 596
 597      The global hash table entry for the global symbols can be found
 598      via elf_sym_hashes (input_bfd).
 599
 600      When generating relocateable output, this function must handle
 601      STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
 602      going to be the section symbol corresponding to the output
 603      section, which means that the addend must be adjusted
 604      accordingly.  */
 605   boolean (*elf_backend_relocate_section)
 606     PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
 607              bfd *input_bfd, asection *input_section, bfd_byte *contents,
 608              Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
 609              asection **local_sections));
 610
 611   /* The FINISH_DYNAMIC_SYMBOL function is called by the ELF backend
 612      linker just before it writes a symbol out to the .dynsym section.
 613      The processor backend may make any required adjustment to the
 614      symbol.  It may also take the opportunity to set contents of the
 615      dynamic sections.  Note that FINISH_DYNAMIC_SYMBOL is called on
 616      all .dynsym symbols, while ADJUST_DYNAMIC_SYMBOL is only called
 617      on those symbols which are defined by a dynamic object.  */
 618   boolean (*elf_backend_finish_dynamic_symbol)
 619     PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
 620              struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
 621
 622   /* The FINISH_DYNAMIC_SECTIONS function is called by the ELF backend
 623      linker just before it writes all the dynamic sections out to the
 624      output file.  The FINISH_DYNAMIC_SYMBOL will have been called on
 625      all dynamic symbols.  */
 626   boolean (*elf_backend_finish_dynamic_sections)
 627     PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
 628
 629   /* A function to do any beginning processing needed for the ELF file
 630      before building the ELF headers and computing file positions.  */
 631   void (*elf_backend_begin_write_processing)
 632     PARAMS ((bfd *, struct bfd_link_info *));
 633
 634   /* A function to do any final processing needed for the ELF file
 635      before writing it out.  The LINKER argument is true if this BFD
 636      was created by the ELF backend linker.  */
 637   void (*elf_backend_final_write_processing)
 638     PARAMS ((bfd *, boolean linker));
 639
 640   /* This function is called by get_program_header_size.  It should
 641      return the number of additional program segments which this BFD
 642      will need.  It should return -1 on error.  */
 643   int (*elf_backend_additional_program_headers)
 644     PARAMS ((bfd *));
 645
 646   /* This function is called to modify an existing segment map in a
 647      backend specific fashion.  */
 648   boolean (*elf_backend_modify_segment_map)
 649     PARAMS ((bfd *));
 650
 651   /* This function is called during section gc to discover the section a
 652      particular relocation refers to.  It need not be defined for hosts
 653      that have no queer relocation types.  */
 654   asection * (*gc_mark_hook)
 655     PARAMS ((bfd *abfd, struct bfd_link_info *, Elf_Internal_Rela *,
 656              struct elf_link_hash_entry *h, Elf_Internal_Sym *));
 657
 658   /* This function, if defined, is called during the sweep phase of gc
 659      in order that a backend might update any data structures it might
 660      be maintaining.  */
 661   boolean (*gc_sweep_hook)
 662     PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *o,
 663              const Elf_Internal_Rela *relocs));
 664
 665   /* This function, if defined, is called after the ELF headers have
 666      been created.  This allows for things like the OS and ABI versions
 667      to be changed.  */
 668   void (*elf_backend_post_process_headers)
 669     PARAMS ((bfd *, struct bfd_link_info *));
 670
 671   /* This function, if defined, prints a symbol to file and returns the
 672      name of the symbol to be printed.  It should return NULL to fall
 673      back to default symbol printing.  */
 674   const char *(*elf_backend_print_symbol_all)
 675     PARAMS ((bfd *, PTR, asymbol *));
 676
 677   /* This function, if defined, is called after all local symbols and
 678      global symbols converted to locals are emited into the symtab
 679      section.  It allows the backend to emit special global symbols
 680      not handled in the hash table.  */
 681   boolean (*elf_backend_output_arch_syms)
 682     PARAMS ((bfd *, struct bfd_link_info *, PTR,
 683             boolean (*) (PTR, const char *, Elf_Internal_Sym *, asection *)));
 684
 685   /* Copy any information related to dynamic linking from a pre-existing
 686      symbol to a newly created symbol.  Also called to copy flags and
 687      other back-end info to a weakdef, in which case the symbol is not
 688      newly created and plt/got refcounts and dynamic indices should not
 689      be copied.  */
 690   void (*elf_backend_copy_indirect_symbol)
 691     PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
 692
 693   /* Modify any information related to dynamic linking such that the
 694      symbol is not exported.  */
 695   void (*elf_backend_hide_symbol)
 696     PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean));
 697
 698   /* Emit relocations.  Overrides default routine for emitting relocs,
 699      except during a relocatable link, or if all relocs are being emitted.  */
 700   void (*elf_backend_emit_relocs)
 701     PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *));
 702
 703   /* Count relocations.  Not called for relocatable links
 704      or if all relocs are being preserved in the output.  */
 705   unsigned int (*elf_backend_count_relocs)
 706     PARAMS ((asection *, Elf_Internal_Rela *));
 707
 708   /* This function, if defined, is called when an NT_PRSTATUS note is found
 709      in a core file. */
 710   boolean (*elf_backend_grok_prstatus)
 711     PARAMS ((bfd *, Elf_Internal_Note *));
 712
 713   /* This function, if defined, is called when an NT_PSINFO or NT_PRPSINFO
 714      note is found in a core file. */
 715   boolean (*elf_backend_grok_psinfo)
 716     PARAMS ((bfd *, Elf_Internal_Note *));
 717
 718   /* Functions to print VMAs.  Special code to handle 64 bit ELF files.  */
 719   void (* elf_backend_sprintf_vma)
 720     PARAMS ((bfd *, char *, bfd_vma));
 721   void (* elf_backend_fprintf_vma)
 722     PARAMS ((bfd *, PTR, bfd_vma));
 723
 724   /* This function returns class of a reloc type.  */
 725   enum elf_reloc_type_class (*elf_backend_reloc_type_class)
 726     PARAMS ((const Elf_Internal_Rela *));
 727
 728   /* This function, if defined, removes information about discarded functions
 729      from other sections which mention them.  */
 730   boolean (*elf_backend_discard_info)
 731     PARAMS ((bfd *, struct elf_reloc_cookie *, struct bfd_link_info *));
 732
 733   /* This function, if defined, signals that the function above has removed
 734      the discarded relocations for this section.  */
 735   boolean (*elf_backend_ignore_discarded_relocs)
 736     PARAMS ((asection *));
 737
 738   /* This function, if defined, may write out the given section.
 739      Returns true if it did so and false if the caller should.  */
 740   boolean (*elf_backend_write_section)
 741     PARAMS ((bfd *, asection *, bfd_byte *));
 742
 743   /* The swapping table to use when dealing with ECOFF information.
 744      Used for the MIPS ELF .mdebug section.  */
 745   const struct ecoff_debug_swap *elf_backend_ecoff_debug_swap;
 746
 747   /* Alternate EM_xxxx machine codes for this backend.  */
 748   int elf_machine_alt1;
 749   int elf_machine_alt2;
 750
 751   const struct elf_size_info *s;
 752
 753   /* offset of the _GLOBAL_OFFSET_TABLE_ symbol from the start of the
 754      .got section */
 755   bfd_vma got_symbol_offset;
 756
 757   /* The size in bytes of the headers for the GOT and PLT.  This includes
 758      the so-called reserved entries on some systems.  */
 759   bfd_vma got_header_size;
 760   bfd_vma plt_header_size;
 761
 762   /* This is true if the linker should act like collect and gather
 763      global constructors and destructors by name.  This is true for
 764      MIPS ELF because the Irix 5 tools can not handle the .init
 765      section.  */
 766   unsigned collect : 1;
 767
 768   /* This is true if the linker should ignore changes to the type of a
 769      symbol.  This is true for MIPS ELF because some Irix 5 objects
 770      record undefined functions as STT_OBJECT although the definitions
 771      are STT_FUNC.  */
 772   unsigned type_change_ok : 1;
 773
 774   /* Whether the backend may use REL relocations.  (Some backends use
 775      both REL and RELA relocations, and this flag is set for those
 776      backends.)  */
 777   unsigned may_use_rel_p : 1;
 778
 779   /* Whether the backend may use RELA relocations.  (Some backends use
 780      both REL and RELA relocations, and this flag is set for those
 781      backends.)  */
 782   unsigned may_use_rela_p : 1;
 783
 784   /* Whether the default relocation type is RELA.  If a backend with
 785      this flag set wants REL relocations for a particular section,
 786      it must note that explicitly.  Similarly, if this flag is clear,
 787      and the backend wants RELA relocations for a particular
 788      section.  */
 789   unsigned default_use_rela_p : 1;
 790
 791   /* True if addresses "naturally" sign extend.  This is used when
 792      swapping in from Elf32 when BFD64.  */
 793   unsigned sign_extend_vma : 1;
 794
 795   unsigned want_got_plt : 1;
 796   unsigned plt_readonly : 1;
 797   unsigned want_plt_sym : 1;
 798   unsigned plt_not_loaded : 1;
 799   unsigned plt_alignment : 4;
 800   unsigned can_gc_sections : 1;
 801   unsigned can_refcount : 1;
 802   unsigned want_got_sym : 1;
 803   unsigned want_dynbss : 1;
 804 };
 805
 806 /* Information stored for each BFD section in an ELF file.  This
 807    structure is allocated by elf_new_section_hook.  */
 808
 809 struct bfd_elf_section_data
 810 {
 811   /* The ELF header for this section.  */
 812   Elf_Internal_Shdr this_hdr;
 813
 814   /* The ELF header for the reloc section associated with this
 815      section, if any.  */
 816   Elf_Internal_Shdr rel_hdr;
 817
 818   /* If there is a second reloc section associated with this section,
 819      as can happen on Irix 6, this field points to the header.  */
 820   Elf_Internal_Shdr *rel_hdr2;
 821
 822   /* The number of relocations currently assigned to REL_HDR.  */
 823   unsigned int rel_count;
 824
 825   /* The number of relocations currently assigned to REL_HDR2.  */
 826   unsigned int rel_count2;
 827
 828   /* A pointer to a linked list tracking dynamic relocs copied for
 829      local symbols.  */
 830   PTR local_dynrel;
 831
 832   /* A pointer to the bfd section used for dynamic relocs.  */
 833   asection *sreloc;
 834
 835   /* The ELF section number of this section.  Only used for an output
 836      file.  */
 837   int this_idx;
 838
 839   /* The ELF section number of the reloc section indicated by
 840      REL_HDR if any.  Only used for an output file.  */
 841   int rel_idx;
 842
 843   /* The ELF section number of the reloc section indicated by
 844      REL_HDR2 if any.  Only used for an output file.  */
 845   int rel_idx2;
 846
 847   /* Used by the backend linker to store the symbol hash table entries
 848      associated with relocs against global symbols.  */
 849   struct elf_link_hash_entry **rel_hashes;
 850
 851   /* A pointer to the swapped relocs.  If the section uses REL relocs,
 852      rather than RELA, all the r_addend fields will be zero.  This
 853      pointer may be NULL.  It is used by the backend linker.  */
 854   Elf_Internal_Rela *relocs;
 855
 856   /* Used by the backend linker when generating a shared library to
 857      record the dynamic symbol index for a section symbol
 858      corresponding to this section.  A value of 0 means that there is
 859      no dynamic symbol for this section.  */
 860   long dynindx;
 861
 862   /* A pointer used for various section optimizations.  */
 863   PTR sec_info;
 864
 865   /* Type of that information.  */
 866   enum elf_link_info_type sec_info_type;
 867
 868   /* Group name, if this section is part of a group.  */
 869   const char *group_name;
 870
 871   /* A linked list of sections in the group.  Circular when used by
 872      the linker.  */
 873   asection *next_in_group;
 874
 875   /* A pointer available for the processor specific ELF backend.  */
 876   PTR tdata;
 877
 878   /* Nonzero if this section uses RELA relocations, rather than REL.  */
 879   unsigned int use_rela_p:1;
 880 };
 881
 882 #define elf_section_data(sec)  ((struct bfd_elf_section_data*)sec->used_by_bfd)
 883 #define elf_group_name(sec)    (elf_section_data(sec)->group_name)
 884 #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
 885
 886 /* Return true if section has been discarded.  */
 887 #define elf_discarded_section(sec)                                      \
 888   (!bfd_is_abs_section(sec)                                             \
 889    && bfd_is_abs_section((sec)->output_section)                         \
 890    && elf_section_data (sec)->sec_info_type != ELF_INFO_TYPE_MERGE)
 891
 892 #define get_elf_backend_data(abfd) \
 893   ((struct elf_backend_data *) (abfd)->xvec->backend_data)
 894
 895 /* Enumeration to specify the special section.  */
 896 typedef enum elf_linker_section_enum
 897 {
 898   LINKER_SECTION_UNKNOWN,               /* not used */
 899   LINKER_SECTION_GOT,                   /* .got section for global offset pointers */
 900   LINKER_SECTION_PLT,                   /* .plt section for generated procedure stubs */
 901   LINKER_SECTION_SDATA,                 /* .sdata/.sbss section for PowerPC */
 902   LINKER_SECTION_SDATA2,                /* .sdata2/.sbss2 section for PowerPC */
 903   LINKER_SECTION_MAX                    /* # of linker sections */
 904 } elf_linker_section_enum_t;
 905
 906 /* Sections created by the linker.  */
 907
 908 typedef struct elf_linker_section
 909 {
 910   char *name;                           /* name of the section */
 911   char *rel_name;                       /* name of the associated .rel{,a}. section */
 912   char *bss_name;                       /* name of a related .bss section */
 913   char *sym_name;                       /* name of symbol to reference this section */
 914   asection *section;                    /* pointer to the section */
 915   asection *bss_section;                /* pointer to the bss section associated with this */
 916   asection *rel_section;                /* pointer to the relocations needed for this section */
 917   struct elf_link_hash_entry *sym_hash; /* pointer to the created symbol hash value */
 918   bfd_vma initial_size;                 /* initial size before any linker generated allocations */
 919   bfd_vma sym_offset;                   /* offset of symbol from beginning of section */
 920   bfd_vma hole_size;                    /* size of reserved address hole in allocation */
 921   bfd_vma hole_offset;                  /* current offset for the hole */
 922   bfd_vma max_hole_offset;              /* maximum offset for the hole */
 923   elf_linker_section_enum_t which;      /* which section this is */
 924   boolean hole_written_p;               /* whether the hole has been initialized */
 925   unsigned int alignment;               /* alignment for the section */
 926   flagword flags;                       /* flags to use to create the section */
 927 } elf_linker_section_t;
 928
 929 /* Linked list of allocated pointer entries.  This hangs off of the symbol lists, and
 930    provides allows us to return different pointers, based on different addend's.  */
 931
 932 typedef struct elf_linker_section_pointers
 933 {
 934   struct elf_linker_section_pointers *next;     /* next allocated pointer for this symbol */
 935   bfd_vma offset;                               /* offset of pointer from beginning of section */
 936   bfd_vma addend;                               /* addend used */
 937   elf_linker_section_enum_t which;              /* which linker section this is */
 938   boolean written_address_p;                    /* whether address was written yet */
 939 } elf_linker_section_pointers_t;
 940
 941 /* Some private data is stashed away for future use using the tdata pointer
 942    in the bfd structure.  */
 943
 944 struct elf_obj_tdata
 945 {
 946   Elf_Internal_Ehdr elf_header[1];      /* Actual data, but ref like ptr */
 947   Elf_Internal_Shdr **elf_sect_ptr;
 948   Elf_Internal_Phdr *phdr;
 949   struct elf_segment_map *segment_map;
 950   struct elf_strtab_hash *strtab_ptr;
 951   int num_locals;
 952   int num_globals;
 953   unsigned int num_elf_sections;        /* elf_sect_ptr size */
 954   int num_section_syms;
 955   asymbol **section_syms;               /* STT_SECTION symbols for each section */
 956   Elf_Internal_Shdr symtab_hdr;
 957   Elf_Internal_Shdr shstrtab_hdr;
 958   Elf_Internal_Shdr strtab_hdr;
 959   Elf_Internal_Shdr dynsymtab_hdr;
 960   Elf_Internal_Shdr dynstrtab_hdr;
 961   Elf_Internal_Shdr dynversym_hdr;
 962   Elf_Internal_Shdr dynverref_hdr;
 963   Elf_Internal_Shdr dynverdef_hdr;
 964   Elf_Internal_Shdr symtab_shndx_hdr;
 965   unsigned int symtab_section, shstrtab_section;
 966   unsigned int strtab_section, dynsymtab_section;
 967   unsigned int symtab_shndx_section;
 968   unsigned int dynversym_section, dynverdef_section, dynverref_section;
 969   file_ptr next_file_pos;
 970 #if 0
 971   /* we don't need these inside bfd anymore, and I think
 972      these weren't used outside bfd.  */
 973   void *prstatus;                       /* The raw /proc prstatus structure */
 974   void *prpsinfo;                       /* The raw /proc prpsinfo structure */
 975 #endif
 976   bfd_vma gp;                           /* The gp value */
 977   unsigned int gp_size;                 /* The gp size */
 978
 979   Elf_Internal_Shdr **group_sect_ptr;
 980   int num_group;
 981
 982   /* Information grabbed from an elf core file.  */
 983   int core_signal;
 984   int core_pid;
 985   int core_lwpid;
 986   char* core_program;
 987   char* core_command;
 988
 989   /* This is set to true if the object was created by the backend
 990      linker.  */
 991   boolean linker;
 992
 993   /* A mapping from external symbols to entries in the linker hash
 994      table, used when linking.  This is indexed by the symbol index
 995      minus the sh_info field of the symbol table header.  */
 996   struct elf_link_hash_entry **sym_hashes;
 997
 998   /* A mapping from local symbols to offsets into the global offset
 999      table, used when linking.  This is indexed by the symbol index.
1000      Like for the globals, we use a union and two names primarily to
1001      document the intent of any particular piece of code.  The field
1002      should be used as a count until size_dynamic_sections, at which
1003      point the contents of the .got is fixed.  Afterward, if an entry
1004      is -1, then the symbol does not require a global offset table entry.  */
1005   union
1006     {
1007       bfd_signed_vma *refcounts;
1008       bfd_vma *offsets;
1009     } local_got;
1010
1011   /* A mapping from local symbols to offsets into the various linker
1012      sections added.  This is index by the symbol index.  */
1013   elf_linker_section_pointers_t **linker_section_pointers;
1014
1015   /* The linker ELF emulation code needs to let the backend ELF linker
1016      know what filename should be used for a dynamic object if the
1017      dynamic object is found using a search.  The emulation code then
1018      sometimes needs to know what name was actually used.  Until the
1019      file has been added to the linker symbol table, this field holds
1020      the name the linker wants.  After it has been added, it holds the
1021      name actually used, which will be the DT_SONAME entry if there is
1022      one.  */
1023   const char *dt_name;
1024
1025   /* When a reference in a regular object is resolved by a shared
1026      object is loaded into via the DT_NEEDED entries by the linker
1027      ELF emulation code, we need to add the shared object to the
1028      DT_NEEDED list of the resulting binary to indicate the dependency
1029      as if the -l option is passed to the linker. This field holds the
1030      name of the loaded shared object.  */
1031   const char *dt_soname;
1032
1033   /* Irix 5 often screws up the symbol table, sorting local symbols
1034      after global symbols.  This flag is set if the symbol table in
1035      this BFD appears to be screwed up.  If it is, we ignore the
1036      sh_info field in the symbol table header, and always read all the
1037      symbols.  */
1038   boolean bad_symtab;
1039
1040   /* Records the result of `get_program_header_size'.  */
1041   bfd_size_type program_header_size;
1042
1043   /* Used by find_nearest_line entry point.  */
1044   PTR line_info;
1045
1046   /* Used by MIPS ELF find_nearest_line entry point.  The structure
1047      could be included directly in this one, but there's no point to
1048      wasting the memory just for the infrequently called
1049      find_nearest_line.  */
1050   struct mips_elf_find_line *find_line_info;
1051
1052   /* A place to stash dwarf1 info for this bfd.  */
1053   struct dwarf1_debug *dwarf1_find_line_info;
1054
1055   /* A place to stash dwarf2 info for this bfd.  */
1056   PTR dwarf2_find_line_info;
1057
1058   /* An array of stub sections indexed by symbol number, used by the
1059      MIPS ELF linker.  FIXME: We should figure out some way to only
1060      include this field for a MIPS ELF target.  */
1061   asection **local_stubs;
1062
1063   /* Used to determine if the e_flags field has been initialized */
1064   boolean flags_init;
1065
1066   /* Used to determine if PT_GNU_EH_FRAME segment header should be
1067      created.  */
1068   boolean eh_frame_hdr;
1069
1070   /* Number of symbol version definitions we are about to emit.  */
1071   unsigned int cverdefs;
1072
1073   /* Number of symbol version references we are about to emit.  */
1074   unsigned int cverrefs;
1075
1076   /* Symbol version definitions in external objects.  */
1077   Elf_Internal_Verdef *verdef;
1078
1079   /* Symbol version references to external objects.  */
1080   Elf_Internal_Verneed *verref;
1081
1082   /* Linker sections that we are interested in.  */
1083   struct elf_linker_section *linker_section[ (int)LINKER_SECTION_MAX ];
1084
1085   /* The Irix 5 support uses two virtual sections, which represent
1086      text/data symbols defined in dynamic objects.  */
1087   asymbol *elf_data_symbol;
1088   asymbol *elf_text_symbol;
1089   asection *elf_data_section;
1090   asection *elf_text_section;
1091 };
1092
1093 #define elf_tdata(bfd)          ((bfd) -> tdata.elf_obj_data)
1094 #define elf_elfheader(bfd)      (elf_tdata(bfd) -> elf_header)
1095 #define elf_elfsections(bfd)    (elf_tdata(bfd) -> elf_sect_ptr)
1096 #define elf_numsections(bfd)    (elf_tdata(bfd) -> num_elf_sections)
1097 #define elf_shstrtab(bfd)       (elf_tdata(bfd) -> strtab_ptr)
1098 #define elf_onesymtab(bfd)      (elf_tdata(bfd) -> symtab_section)
1099 #define elf_symtab_shndx(bfd)   (elf_tdata(bfd) -> symtab_shndx_section)
1100 #define elf_dynsymtab(bfd)      (elf_tdata(bfd) -> dynsymtab_section)
1101 #define elf_dynversym(bfd)      (elf_tdata(bfd) -> dynversym_section)
1102 #define elf_dynverdef(bfd)      (elf_tdata(bfd) -> dynverdef_section)
1103 #define elf_dynverref(bfd)      (elf_tdata(bfd) -> dynverref_section)
1104 #define elf_num_locals(bfd)     (elf_tdata(bfd) -> num_locals)
1105 #define elf_num_globals(bfd)    (elf_tdata(bfd) -> num_globals)
1106 #define elf_section_syms(bfd)   (elf_tdata(bfd) -> section_syms)
1107 #define elf_num_section_syms(bfd) (elf_tdata(bfd) -> num_section_syms)
1108 #define core_prpsinfo(bfd)      (elf_tdata(bfd) -> prpsinfo)
1109 #define core_prstatus(bfd)      (elf_tdata(bfd) -> prstatus)
1110 #define elf_gp(bfd)             (elf_tdata(bfd) -> gp)
1111 #define elf_gp_size(bfd)        (elf_tdata(bfd) -> gp_size)
1112 #define elf_sym_hashes(bfd)     (elf_tdata(bfd) -> sym_hashes)
1113 #define elf_local_got_refcounts(bfd) (elf_tdata(bfd) -> local_got.refcounts)
1114 #define elf_local_got_offsets(bfd) (elf_tdata(bfd) -> local_got.offsets)
1115 #define elf_local_ptr_offsets(bfd) (elf_tdata(bfd) -> linker_section_pointers)
1116 #define elf_dt_name(bfd)        (elf_tdata(bfd) -> dt_name)
1117 #define elf_dt_soname(bfd)      (elf_tdata(bfd) -> dt_soname)
1118 #define elf_bad_symtab(bfd)     (elf_tdata(bfd) -> bad_symtab)
1119 #define elf_flags_init(bfd)     (elf_tdata(bfd) -> flags_init)
1120 #define elf_linker_section(bfd,n) (elf_tdata(bfd) -> linker_section[(int)n])
1121 \f
1122 extern void _bfd_elf_swap_verdef_in
1123   PARAMS ((bfd *, const Elf_External_Verdef *, Elf_Internal_Verdef *));
1124 extern void _bfd_elf_swap_verdef_out
1125   PARAMS ((bfd *, const Elf_Internal_Verdef *, Elf_External_Verdef *));
1126 extern void _bfd_elf_swap_verdaux_in
1127   PARAMS ((bfd *, const Elf_External_Verdaux *, Elf_Internal_Verdaux *));
1128 extern void _bfd_elf_swap_verdaux_out
1129   PARAMS ((bfd *, const Elf_Internal_Verdaux *, Elf_External_Verdaux *));
1130 extern void _bfd_elf_swap_verneed_in
1131   PARAMS ((bfd *, const Elf_External_Verneed *, Elf_Internal_Verneed *));
1132 extern void _bfd_elf_swap_verneed_out
1133   PARAMS ((bfd *, const Elf_Internal_Verneed *, Elf_External_Verneed *));
1134 extern void _bfd_elf_swap_vernaux_in
1135   PARAMS ((bfd *, const Elf_External_Vernaux *, Elf_Internal_Vernaux *));
1136 extern void _bfd_elf_swap_vernaux_out
1137   PARAMS ((bfd *, const Elf_Internal_Vernaux *, Elf_External_Vernaux *));
1138 extern void _bfd_elf_swap_versym_in
1139   PARAMS ((bfd *, const Elf_External_Versym *, Elf_Internal_Versym *));
1140 extern void _bfd_elf_swap_versym_out
1141   PARAMS ((bfd *, const Elf_Internal_Versym *, Elf_External_Versym *));
1142
1143 extern int _bfd_elf_section_from_bfd_section
1144   PARAMS ((bfd *, asection *));
1145 extern char *bfd_elf_string_from_elf_section
1146   PARAMS ((bfd *, unsigned, unsigned));
1147 extern char *bfd_elf_get_str_section
1148   PARAMS ((bfd *, unsigned));
1149
1150 extern boolean _bfd_elf_copy_private_bfd_data
1151   PARAMS ((bfd *, bfd *));
1152 extern boolean _bfd_elf_print_private_bfd_data
1153   PARAMS ((bfd *, PTR));
1154 extern void bfd_elf_print_symbol
1155   PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
1156
1157 #define elf_string_from_elf_strtab(abfd, strindex) \
1158   bfd_elf_string_from_elf_section(abfd, elf_elfheader(abfd)->e_shstrndx, \
1159                                   strindex)
1160
1161 #define bfd_elf32_print_symbol  bfd_elf_print_symbol
1162 #define bfd_elf64_print_symbol  bfd_elf_print_symbol
1163
1164 extern void _bfd_elf_sprintf_vma
1165   PARAMS ((bfd *, char *, bfd_vma));
1166 extern void _bfd_elf_fprintf_vma
1167   PARAMS ((bfd *, PTR, bfd_vma));
1168
1169 extern enum elf_reloc_type_class _bfd_elf_reloc_type_class
1170   PARAMS ((const Elf_Internal_Rela *));
1171 extern bfd_vma _bfd_elf_rela_local_sym
1172   PARAMS ((bfd *, Elf_Internal_Sym *, asection *, Elf_Internal_Rela *));
1173 extern bfd_vma _bfd_elf_rel_local_sym
1174   PARAMS ((bfd *, Elf_Internal_Sym *, asection **, bfd_vma));
1175 extern bfd_vma _bfd_elf_section_offset
1176   PARAMS ((bfd *, struct bfd_link_info *, asection *, bfd_vma));
1177
1178 extern unsigned long bfd_elf_hash
1179   PARAMS ((const char *));
1180
1181 extern bfd_reloc_status_type bfd_elf_generic_reloc
1182   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
1183 extern boolean bfd_elf_mkobject
1184   PARAMS ((bfd *));
1185 extern boolean bfd_elf_mkcorefile
1186   PARAMS ((bfd *));
1187 extern Elf_Internal_Shdr *bfd_elf_find_section
1188   PARAMS ((bfd *, char *));
1189 extern boolean _bfd_elf_make_section_from_shdr
1190   PARAMS ((bfd *, Elf_Internal_Shdr *, const char *));
1191 extern boolean _bfd_elf_make_section_from_phdr
1192   PARAMS ((bfd *, Elf_Internal_Phdr *, int, const char *));
1193 extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
1194   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
1195 extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
1196   PARAMS ((bfd *));
1197 extern void _bfd_elf_link_hash_copy_indirect
1198   PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
1199 extern void _bfd_elf_link_hash_hide_symbol
1200   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean));
1201 extern boolean _bfd_elf_link_hash_table_init
1202   PARAMS ((struct elf_link_hash_table *, bfd *,
1203            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
1204                                        struct bfd_hash_table *,
1205                                        const char *)));
1206 extern boolean _bfd_elf_slurp_version_tables
1207   PARAMS ((bfd *));
1208
1209 extern boolean _bfd_elf_merge_sections
1210   PARAMS ((bfd *, struct bfd_link_info *));
1211
1212 extern boolean _bfd_elf_copy_private_symbol_data
1213   PARAMS ((bfd *, asymbol *, bfd *, asymbol *));
1214 extern boolean _bfd_elf_copy_private_section_data
1215   PARAMS ((bfd *, asection *, bfd *, asection *));
1216 extern boolean _bfd_elf_write_object_contents
1217   PARAMS ((bfd *));
1218 extern boolean _bfd_elf_write_corefile_contents
1219   PARAMS ((bfd *));
1220 extern boolean _bfd_elf_set_section_contents
1221   PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type));
1222 extern long _bfd_elf_get_symtab_upper_bound
1223   PARAMS ((bfd *));
1224 extern long _bfd_elf_get_symtab
1225   PARAMS ((bfd *, asymbol **));
1226 extern long _bfd_elf_get_dynamic_symtab_upper_bound
1227   PARAMS ((bfd *));
1228 extern long _bfd_elf_canonicalize_dynamic_symtab
1229   PARAMS ((bfd *, asymbol **));
1230 extern long _bfd_elf_get_reloc_upper_bound
1231   PARAMS ((bfd *, sec_ptr));
1232 extern long _bfd_elf_canonicalize_reloc
1233   PARAMS ((bfd *, sec_ptr, arelent **, asymbol **));
1234 extern long _bfd_elf_get_dynamic_reloc_upper_bound
1235   PARAMS ((bfd *));
1236 extern long _bfd_elf_canonicalize_dynamic_reloc
1237   PARAMS ((bfd *, arelent **, asymbol **));
1238 extern asymbol *_bfd_elf_make_empty_symbol
1239   PARAMS ((bfd *));
1240 extern void _bfd_elf_get_symbol_info
1241   PARAMS ((bfd *, asymbol *, symbol_info *));
1242 extern boolean _bfd_elf_is_local_label_name
1243   PARAMS ((bfd *, const char *));
1244 extern alent *_bfd_elf_get_lineno
1245   PARAMS ((bfd *, asymbol *));
1246 extern boolean _bfd_elf_set_arch_mach
1247   PARAMS ((bfd *, enum bfd_architecture, unsigned long));
1248 extern boolean _bfd_elf_find_nearest_line
1249   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
1250            const char **, unsigned int *));
1251 #define _bfd_elf_read_minisymbols _bfd_generic_read_minisymbols
1252 #define _bfd_elf_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
1253 extern int _bfd_elf_sizeof_headers
1254   PARAMS ((bfd *, boolean));
1255 extern boolean _bfd_elf_new_section_hook
1256   PARAMS ((bfd *, asection *));
1257 extern boolean _bfd_elf_init_reloc_shdr
1258   PARAMS ((bfd *, Elf_Internal_Shdr *, asection *, boolean));
1259
1260 /* If the target doesn't have reloc handling written yet:  */
1261 extern void _bfd_elf_no_info_to_howto
1262   PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
1263
1264 extern boolean bfd_section_from_shdr
1265   PARAMS ((bfd *, unsigned int shindex));
1266 extern boolean bfd_section_from_phdr
1267   PARAMS ((bfd *, Elf_Internal_Phdr *, int));
1268
1269 extern int _bfd_elf_symbol_from_bfd_symbol
1270   PARAMS ((bfd *, asymbol **));
1271
1272 extern asection *bfd_section_from_r_symndx
1273   PARAMS ((bfd *, struct sym_sec_cache *, asection *, unsigned long));
1274 extern asection *bfd_section_from_elf_index
1275   PARAMS ((bfd *, unsigned int));
1276 extern boolean _bfd_elf_create_dynamic_sections
1277   PARAMS ((bfd *, struct bfd_link_info *));
1278 extern struct bfd_strtab_hash *_bfd_elf_stringtab_init
1279   PARAMS ((void));
1280
1281 extern struct elf_strtab_hash * _bfd_elf_strtab_init
1282   PARAMS ((void));
1283 extern void _bfd_elf_strtab_free
1284   PARAMS ((struct elf_strtab_hash *));
1285 extern bfd_size_type _bfd_elf_strtab_add
1286   PARAMS ((struct elf_strtab_hash *, const char *, boolean));
1287 extern void _bfd_elf_strtab_addref
1288   PARAMS ((struct elf_strtab_hash *, bfd_size_type));
1289 extern void _bfd_elf_strtab_delref
1290   PARAMS ((struct elf_strtab_hash *, bfd_size_type));
1291 extern void _bfd_elf_strtab_clear_all_refs
1292   PARAMS ((struct elf_strtab_hash *));
1293 extern bfd_size_type _bfd_elf_strtab_size
1294   PARAMS ((struct elf_strtab_hash *));
1295 extern bfd_size_type _bfd_elf_strtab_offset
1296   PARAMS ((struct elf_strtab_hash *, bfd_size_type));
1297 extern boolean _bfd_elf_strtab_emit
1298   PARAMS ((bfd *, struct elf_strtab_hash *));
1299 extern void _bfd_elf_strtab_finalize
1300   PARAMS ((struct elf_strtab_hash *));
1301
1302 extern boolean _bfd_elf_discard_section_eh_frame
1303   PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *,
1304            boolean (*) (bfd_vma, PTR), struct elf_reloc_cookie *));
1305 extern boolean _bfd_elf_discard_section_eh_frame_hdr
1306   PARAMS ((bfd *, struct bfd_link_info *, asection *));
1307 extern bfd_vma _bfd_elf_eh_frame_section_offset
1308   PARAMS ((bfd *, asection *, bfd_vma));
1309 extern boolean _bfd_elf_write_section_eh_frame
1310   PARAMS ((bfd *, asection *, asection *, bfd_byte *));
1311 extern boolean _bfd_elf_write_section_eh_frame_hdr
1312   PARAMS ((bfd *, asection *));
1313 extern boolean _bfd_elf_maybe_strip_eh_frame_hdr
1314   PARAMS ((struct bfd_link_info *));
1315
1316 extern boolean _bfd_elf_link_record_dynamic_symbol
1317   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
1318 extern long _bfd_elf_link_lookup_local_dynindx
1319   PARAMS ((struct bfd_link_info *, bfd *, long));
1320 extern boolean _bfd_elf_compute_section_file_positions
1321   PARAMS ((bfd *, struct bfd_link_info *));
1322 extern void _bfd_elf_assign_file_positions_for_relocs
1323   PARAMS ((bfd *));
1324 extern file_ptr _bfd_elf_assign_file_position_for_section
1325   PARAMS ((Elf_Internal_Shdr *, file_ptr, boolean));
1326
1327 extern boolean _bfd_elf_validate_reloc
1328   PARAMS ((bfd *, arelent *));
1329
1330 extern boolean _bfd_elf_create_dynamic_sections
1331   PARAMS ((bfd *, struct bfd_link_info *));
1332 extern boolean _bfd_elf_create_got_section
1333   PARAMS ((bfd *, struct bfd_link_info *));
1334 extern unsigned long _bfd_elf_link_renumber_dynsyms
1335   PARAMS ((bfd *, struct bfd_link_info *));
1336
1337 extern boolean _bfd_elfcore_make_pseudosection
1338   PARAMS ((bfd *, char *, size_t, ufile_ptr));
1339 extern char *_bfd_elfcore_strndup
1340   PARAMS ((bfd *, char *, size_t));
1341
1342 extern elf_linker_section_t *_bfd_elf_create_linker_section
1343   PARAMS ((bfd *, struct bfd_link_info *, enum elf_linker_section_enum,
1344            elf_linker_section_t *));
1345
1346 extern elf_linker_section_pointers_t *_bfd_elf_find_pointer_linker_section
1347   PARAMS ((elf_linker_section_pointers_t *, bfd_vma,
1348            elf_linker_section_enum_t));
1349
1350 extern boolean bfd_elf32_create_pointer_linker_section
1351   PARAMS ((bfd *, struct bfd_link_info *, elf_linker_section_t *,
1352            struct elf_link_hash_entry *, const Elf32_Internal_Rela *));
1353
1354 extern bfd_vma bfd_elf32_finish_pointer_linker_section
1355   PARAMS ((bfd *, bfd *, struct bfd_link_info *, elf_linker_section_t *,
1356            struct elf_link_hash_entry *, bfd_vma,
1357            const Elf32_Internal_Rela *, int));
1358
1359 extern boolean bfd_elf64_create_pointer_linker_section
1360   PARAMS ((bfd *, struct bfd_link_info *, elf_linker_section_t *,
1361            struct elf_link_hash_entry *, const Elf64_Internal_Rela *));
1362
1363 extern bfd_vma bfd_elf64_finish_pointer_linker_section
1364   PARAMS ((bfd *, bfd *, struct bfd_link_info *, elf_linker_section_t *,
1365            struct elf_link_hash_entry *, bfd_vma,
1366            const Elf64_Internal_Rela *, int));
1367
1368 extern boolean _bfd_elf_make_linker_section_rela
1369   PARAMS ((bfd *, elf_linker_section_t *, int));
1370
1371 extern const bfd_target *bfd_elf32_object_p
1372   PARAMS ((bfd *));
1373 extern const bfd_target *bfd_elf32_core_file_p
1374   PARAMS ((bfd *));
1375 extern char *bfd_elf32_core_file_failing_command
1376   PARAMS ((bfd *));
1377 extern int bfd_elf32_core_file_failing_signal
1378   PARAMS ((bfd *));
1379 extern boolean bfd_elf32_core_file_matches_executable_p
1380   PARAMS ((bfd *, bfd *));
1381
1382 extern boolean bfd_elf32_bfd_link_add_symbols
1383   PARAMS ((bfd *, struct bfd_link_info *));
1384 extern boolean bfd_elf32_bfd_final_link
1385   PARAMS ((bfd *, struct bfd_link_info *));
1386
1387 extern void bfd_elf32_swap_symbol_in
1388   PARAMS ((bfd *, const Elf32_External_Sym *, const Elf_External_Sym_Shndx *,
1389            Elf_Internal_Sym *));
1390 extern void bfd_elf32_swap_symbol_out
1391   PARAMS ((bfd *, const Elf_Internal_Sym *, PTR, PTR));
1392 extern void bfd_elf32_swap_reloc_in
1393   PARAMS ((bfd *, const Elf32_External_Rel *, Elf_Internal_Rel *));
1394 extern void bfd_elf32_swap_reloc_out
1395   PARAMS ((bfd *, const Elf_Internal_Rel *, Elf32_External_Rel *));
1396 extern void bfd_elf32_swap_reloca_in
1397   PARAMS ((bfd *, const Elf32_External_Rela *, Elf_Internal_Rela *));
1398 extern void bfd_elf32_swap_reloca_out
1399   PARAMS ((bfd *, const Elf_Internal_Rela *, Elf32_External_Rela *));
1400 extern void bfd_elf32_swap_phdr_in
1401   PARAMS ((bfd *, const Elf32_External_Phdr *, Elf_Internal_Phdr *));
1402 extern void bfd_elf32_swap_phdr_out
1403   PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf32_External_Phdr *));
1404 extern void bfd_elf32_swap_dyn_in
1405   PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
1406 extern void bfd_elf32_swap_dyn_out
1407   PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR));
1408 extern long bfd_elf32_slurp_symbol_table
1409   PARAMS ((bfd *, asymbol **, boolean));
1410 extern boolean bfd_elf32_write_shdrs_and_ehdr
1411   PARAMS ((bfd *));
1412 extern int bfd_elf32_write_out_phdrs
1413   PARAMS ((bfd *, const Elf_Internal_Phdr *, unsigned int));
1414 extern void bfd_elf32_write_relocs
1415   PARAMS ((bfd *, asection *, PTR));
1416 extern boolean bfd_elf32_slurp_reloc_table
1417   PARAMS ((bfd *, asection *, asymbol **, boolean));
1418 extern boolean bfd_elf32_add_dynamic_entry
1419   PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
1420 extern boolean bfd_elf32_link_create_dynamic_sections
1421   PARAMS ((bfd *, struct bfd_link_info *));
1422 extern Elf_Internal_Rela *_bfd_elf32_link_read_relocs
1423   PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean));
1424
1425 extern const bfd_target *bfd_elf64_object_p
1426   PARAMS ((bfd *));
1427 extern const bfd_target *bfd_elf64_core_file_p
1428   PARAMS ((bfd *));
1429 extern char *bfd_elf64_core_file_failing_command
1430   PARAMS ((bfd *));
1431 extern int bfd_elf64_core_file_failing_signal
1432   PARAMS ((bfd *));
1433 extern boolean bfd_elf64_core_file_matches_executable_p
1434   PARAMS ((bfd *, bfd *));
1435 extern boolean bfd_elf64_bfd_link_add_symbols
1436   PARAMS ((bfd *, struct bfd_link_info *));
1437 extern boolean bfd_elf64_bfd_final_link
1438   PARAMS ((bfd *, struct bfd_link_info *));
1439
1440 extern void bfd_elf64_swap_symbol_in
1441   PARAMS ((bfd *, const Elf64_External_Sym *, const Elf_External_Sym_Shndx *,
1442            Elf_Internal_Sym *));
1443 extern void bfd_elf64_swap_symbol_out
1444   PARAMS ((bfd *, const Elf_Internal_Sym *, PTR, PTR));
1445 extern void bfd_elf64_swap_reloc_in
1446   PARAMS ((bfd *, const Elf64_External_Rel *, Elf_Internal_Rel *));
1447 extern void bfd_elf64_swap_reloc_out
1448   PARAMS ((bfd *, const Elf_Internal_Rel *, Elf64_External_Rel *));
1449 extern void bfd_elf64_swap_reloca_in
1450   PARAMS ((bfd *, const Elf64_External_Rela *, Elf_Internal_Rela *));
1451 extern void bfd_elf64_swap_reloca_out
1452   PARAMS ((bfd *, const Elf_Internal_Rela *, Elf64_External_Rela *));
1453 extern void bfd_elf64_swap_phdr_in
1454   PARAMS ((bfd *, const Elf64_External_Phdr *, Elf_Internal_Phdr *));
1455 extern void bfd_elf64_swap_phdr_out
1456   PARAMS ((bfd *, const Elf_Internal_Phdr *, Elf64_External_Phdr *));
1457 extern void bfd_elf64_swap_dyn_in
1458   PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
1459 extern void bfd_elf64_swap_dyn_out
1460   PARAMS ((bfd *, const Elf_Internal_Dyn *, PTR));
1461 extern long bfd_elf64_slurp_symbol_table
1462   PARAMS ((bfd *, asymbol **, boolean));
1463 extern boolean bfd_elf64_write_shdrs_and_ehdr
1464   PARAMS ((bfd *));
1465 extern int bfd_elf64_write_out_phdrs
1466   PARAMS ((bfd *, const Elf_Internal_Phdr *, unsigned int));
1467 extern void bfd_elf64_write_relocs
1468   PARAMS ((bfd *, asection *, PTR));
1469 extern boolean bfd_elf64_slurp_reloc_table
1470   PARAMS ((bfd *, asection *, asymbol **, boolean));
1471 extern boolean bfd_elf64_add_dynamic_entry
1472   PARAMS ((struct bfd_link_info *, bfd_vma, bfd_vma));
1473 extern boolean bfd_elf64_link_create_dynamic_sections
1474   PARAMS ((bfd *, struct bfd_link_info *));
1475 extern Elf_Internal_Rela *_bfd_elf64_link_read_relocs
1476   PARAMS ((bfd *, asection *, PTR, Elf_Internal_Rela *, boolean));
1477
1478 #define bfd_elf32_link_record_dynamic_symbol \
1479   _bfd_elf_link_record_dynamic_symbol
1480 #define bfd_elf64_link_record_dynamic_symbol \
1481   _bfd_elf_link_record_dynamic_symbol
1482
1483 extern boolean _bfd_elf32_link_record_local_dynamic_symbol
1484   PARAMS ((struct bfd_link_info *, bfd *, long));
1485 extern boolean _bfd_elf64_link_record_local_dynamic_symbol
1486   PARAMS ((struct bfd_link_info *, bfd *, long));
1487
1488 extern boolean _bfd_elf_close_and_cleanup
1489   PARAMS ((bfd *));
1490 extern bfd_reloc_status_type _bfd_elf_rel_vtable_reloc_fn
1491   PARAMS ((bfd *, arelent *, struct symbol_cache_entry *, PTR,
1492            asection *, bfd *, char **));
1493
1494 extern boolean _bfd_elf32_gc_sections
1495   PARAMS ((bfd *, struct bfd_link_info *));
1496 extern boolean _bfd_elf32_gc_common_finalize_got_offsets
1497   PARAMS ((bfd *, struct bfd_link_info *));
1498 extern boolean _bfd_elf32_gc_common_final_link
1499   PARAMS ((bfd *, struct bfd_link_info *));
1500 extern boolean _bfd_elf32_gc_record_vtinherit
1501   PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma));
1502 extern boolean _bfd_elf32_gc_record_vtentry
1503   PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma));
1504
1505 extern boolean _bfd_elf64_gc_sections
1506   PARAMS ((bfd *, struct bfd_link_info *));
1507 extern boolean _bfd_elf64_gc_common_finalize_got_offsets
1508   PARAMS ((bfd *, struct bfd_link_info *));
1509 extern boolean _bfd_elf64_gc_common_final_link
1510   PARAMS ((bfd *, struct bfd_link_info *));
1511 extern boolean _bfd_elf64_gc_record_vtinherit
1512   PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma));
1513 extern boolean _bfd_elf64_gc_record_vtentry
1514   PARAMS ((bfd *, asection *, struct elf_link_hash_entry *, bfd_vma));
1515
1516 extern boolean _bfd_elf32_reloc_symbol_deleted_p
1517   PARAMS ((bfd_vma, PTR));
1518 extern boolean _bfd_elf64_reloc_symbol_deleted_p
1519   PARAMS ((bfd_vma, PTR));
1520
1521 /* Exported interface for writing elf corefile notes. */
1522 extern char *elfcore_write_note
1523   PARAMS ((bfd *, char *, int *, char *, int, void *, int));
1524 extern char *elfcore_write_prpsinfo
1525   PARAMS ((bfd *, char *, int *, char *, char *));
1526 extern char *elfcore_write_prstatus
1527   PARAMS ((bfd *, char *, int *, long, int, void *));
1528 extern char * elfcore_write_pstatus
1529   PARAMS ((bfd *, char *, int *, long, int, void *));
1530 extern char *elfcore_write_prfpreg
1531   PARAMS ((bfd *, char *, int *, void *, int));
1532 extern char *elfcore_write_prxfpreg
1533   PARAMS ((bfd *, char *, int *, void *, int));
1534 extern char *elfcore_write_lwpstatus
1535   PARAMS ((bfd*, char*, int*, long, int, void*));
1536
1537 /* MIPS ELF specific routines.  */
1538
1539 extern boolean _bfd_mips_elf_object_p
1540   PARAMS ((bfd *));
1541 extern boolean _bfd_mips_elf_section_from_shdr
1542   PARAMS ((bfd *, Elf_Internal_Shdr *, char *));
1543 extern boolean _bfd_mips_elf_fake_sections
1544   PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
1545 extern boolean _bfd_mips_elf_section_from_bfd_section
1546   PARAMS ((bfd *, asection *, int *));
1547 extern boolean _bfd_mips_elf_section_processing
1548   PARAMS ((bfd *, Elf_Internal_Shdr *));
1549 extern void _bfd_mips_elf_symbol_processing
1550   PARAMS ((bfd *, asymbol *));
1551 extern boolean _bfd_mips_elf_read_ecoff_info
1552   PARAMS ((bfd *, asection *, struct ecoff_debug_info *));
1553 extern void _bfd_mips_elf_final_write_processing
1554   PARAMS ((bfd *, boolean));
1555 extern bfd_reloc_status_type _bfd_mips_elf_hi16_reloc
1556   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
1557 extern bfd_reloc_status_type _bfd_mips_elf_lo16_reloc
1558   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
1559 extern bfd_reloc_status_type _bfd_mips_elf_gprel16_reloc
1560   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
1561 extern bfd_reloc_status_type _bfd_mips_elf_got16_reloc
1562   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
1563 extern bfd_reloc_status_type _bfd_mips_elf_gprel32_reloc
1564   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
1565 extern boolean _bfd_mips_elf_set_private_flags
1566   PARAMS ((bfd *, flagword));
1567 extern boolean _bfd_mips_elf_merge_private_bfd_data
1568   PARAMS ((bfd *, bfd *));
1569 extern boolean _bfd_mips_elf_find_nearest_line
1570   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
1571            const char **, unsigned int *));
1572 extern boolean _bfd_mips_elf_set_section_contents
1573   PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
1574 extern boolean _bfd_mips_elf_create_dynamic_sections
1575   PARAMS ((bfd *, struct bfd_link_info *));
1576 extern boolean _bfd_mips_elf_add_symbol_hook
1577   PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
1578            const char **, flagword *, asection **, bfd_vma *));
1579 extern boolean _bfd_mips_elf_adjust_dynamic_symbol
1580   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
1581 extern boolean _bfd_mips_elf_finish_dynamic_symbol
1582   PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
1583            Elf_Internal_Sym *));
1584 extern boolean _bfd_mips_elf_finish_dynamic_sections
1585   PARAMS ((bfd *, struct bfd_link_info *));
1586 extern asection * _bfd_mips_elf_gc_mark_hook
1587   PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
1588            struct elf_link_hash_entry *, Elf_Internal_Sym *));
1589 extern boolean _bfd_mips_elf_gc_sweep_hook
1590   PARAMS ((bfd *, struct bfd_link_info *, asection *,
1591            const Elf_Internal_Rela *));
1592 extern boolean _bfd_mips_elf_always_size_sections
1593   PARAMS ((bfd *, struct bfd_link_info *));
1594 extern boolean _bfd_mips_elf_size_dynamic_sections
1595   PARAMS ((bfd *, struct bfd_link_info *));
1596 extern boolean _bfd_mips_elf_check_relocs
1597   PARAMS ((bfd *, struct bfd_link_info *, asection *,
1598            const Elf_Internal_Rela *));
1599 extern struct bfd_link_hash_table *_bfd_mips_elf_link_hash_table_create
1600   PARAMS ((bfd *));
1601 extern boolean _bfd_mips_elf_print_private_bfd_data
1602   PARAMS ((bfd *, PTR));
1603 extern boolean _bfd_mips_elf_link_output_symbol_hook
1604   PARAMS ((bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *,
1605            asection *));
1606 extern boolean _bfd_mips_elf_final_link
1607   PARAMS ((bfd *, struct bfd_link_info *));
1608 extern int _bfd_mips_elf_additional_program_headers
1609   PARAMS ((bfd *));
1610 extern boolean _bfd_mips_elf_modify_segment_map
1611   PARAMS ((bfd *));
1612 extern boolean _bfd_mips_elf_relocate_section
1613   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
1614            Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
1615
1616 /* SH ELF specific routine.  */
1617
1618 extern boolean _sh_elf_set_mach_from_flags
1619   PARAMS ((bfd *));
1620
1621 #endif /* _LIBELF_H_ */