bfd/libbfd-in.h

   1 /* libbfd.h -- Declarations used by bfd library *implementation*.
   2    (This include file is not for users of the library.)
   3
   4    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
   5    1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
   6
   7    Written by Cygnus Support.
   8
   9 This file is part of BFD, the Binary File Descriptor library.
  10
  11 This program is free software; you can redistribute it and/or modify
  12 it under the terms of the GNU General Public License as published by
  13 the Free Software Foundation; either version 2 of the License, or
  14 (at your option) any later version.
  15
  16 This program is distributed in the hope that it will be useful,
  17 but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 GNU General Public License for more details.
  20
  21 You should have received a copy of the GNU General Public License
  22 along with this program; if not, write to the Free Software
  23 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  24
  25 /* Align an address upward to a boundary, expressed as a number of bytes.
  26    E.g. align to an 8-byte boundary with argument of 8.  Take care never
  27    to wrap around if the address is within boundary-1 of the end of the
  28    address space.  */
  29 #define BFD_ALIGN(this, boundary)                                         \
  30   ((((bfd_vma) (this) + (boundary) - 1) >= (bfd_vma) (this))              \
  31    ? (((bfd_vma) (this) + ((boundary) - 1)) & ~ (bfd_vma) ((boundary)-1)) \
  32    : ~ (bfd_vma) 0)
  33
  34 /* If you want to read and write large blocks, you might want to do it
  35    in quanta of this amount */
  36 #define DEFAULT_BUFFERSIZE 8192
  37
  38 /* Set a tdata field.  Can't use the other macros for this, since they
  39    do casts, and casting to the left of assignment isn't portable.  */
  40 #define set_tdata(bfd, v) ((bfd)->tdata.any = (v))
  41
  42 /* If BFD_IN_MEMORY is set for a BFD, then the iostream fields points
  43    to an instance of this structure.  */
  44
  45 struct bfd_in_memory
  46 {
  47   /* Size of buffer.  */
  48   bfd_size_type size;
  49   /* Buffer holding contents of BFD.  */
  50   bfd_byte *buffer;
  51 };
  52
  53 /* tdata for an archive.  For an input archive, cache
  54    needs to be free()'d.  For an output archive, symdefs do.  */
  55
  56 struct artdata {
  57   file_ptr first_file_filepos;
  58   /* Speed up searching the armap */
  59   struct ar_cache *cache;
  60   bfd *archive_head;            /* Only interesting in output routines */
  61   carsym *symdefs;              /* the symdef entries */
  62   symindex symdef_count;        /* how many there are */
  63   char *extended_names;         /* clever intel extension */
  64   /* when more compilers are standard C, this can be a time_t */
  65   long  armap_timestamp;        /* Timestamp value written into armap.
  66                                    This is used for BSD archives to check
  67                                    that the timestamp is recent enough
  68                                    for the BSD linker to not complain,
  69                                    just before we finish writing an
  70                                    archive.  */
  71   file_ptr armap_datepos;       /* Position within archive to seek to
  72                                    rewrite the date field.  */
  73   void *tdata;                  /* Backend specific information.  */
  74 };
  75
  76 #define bfd_ardata(bfd) ((bfd)->tdata.aout_ar_data)
  77
  78 /* Goes in bfd's arelt_data slot */
  79 struct areltdata {
  80   char * arch_header;           /* it's actually a string */
  81   unsigned int parsed_size;     /* octets of filesize not including ar_hdr */
  82   char *filename;               /* null-terminated */
  83 };
  84
  85 #define arelt_size(bfd) (((struct areltdata *)((bfd)->arelt_data))->parsed_size)
  86
  87 extern void *bfd_malloc
  88   (bfd_size_type);
  89 extern void *bfd_realloc
  90   (void *, bfd_size_type);
  91 extern void *bfd_zmalloc
  92   (bfd_size_type);
  93
  94 extern bfd_error_handler_type _bfd_error_handler;
  95
  96 /* These routines allocate and free things on the BFD's objalloc.  */
  97
  98 extern void *bfd_alloc
  99   (bfd *, bfd_size_type);
 100 extern void *bfd_zalloc
 101   (bfd *, bfd_size_type);
 102 extern void bfd_release
 103   (bfd *, void *);
 104
 105 bfd * _bfd_create_empty_archive_element_shell
 106   (bfd *obfd);
 107 bfd * _bfd_look_for_bfd_in_cache
 108   (bfd *, file_ptr);
 109 bfd_boolean _bfd_add_bfd_to_archive_cache
 110   (bfd *, file_ptr, bfd *);
 111 bfd_boolean _bfd_generic_mkarchive
 112   (bfd *abfd);
 113 const bfd_target *bfd_generic_archive_p
 114   (bfd *abfd);
 115 bfd_boolean bfd_slurp_armap
 116   (bfd *abfd);
 117 bfd_boolean bfd_slurp_bsd_armap_f2
 118   (bfd *abfd);
 119 #define bfd_slurp_bsd_armap bfd_slurp_armap
 120 #define bfd_slurp_coff_armap bfd_slurp_armap
 121 bfd_boolean _bfd_slurp_extended_name_table
 122   (bfd *abfd);
 123 extern bfd_boolean _bfd_construct_extended_name_table
 124   (bfd *, bfd_boolean, char **, bfd_size_type *);
 125 bfd_boolean _bfd_write_archive_contents
 126   (bfd *abfd);
 127 bfd_boolean _bfd_compute_and_write_armap
 128   (bfd *, unsigned int elength);
 129 bfd *_bfd_get_elt_at_filepos
 130   (bfd *archive, file_ptr filepos);
 131 extern bfd *_bfd_generic_get_elt_at_index
 132   (bfd *, symindex);
 133 bfd * _bfd_new_bfd
 134   (void);
 135 void _bfd_delete_bfd
 136   (bfd *);
 137
 138 bfd_boolean bfd_false
 139   (bfd *ignore);
 140 bfd_boolean bfd_true
 141   (bfd *ignore);
 142 void *bfd_nullvoidptr
 143   (bfd *ignore);
 144 int bfd_0
 145   (bfd *ignore);
 146 unsigned int bfd_0u
 147   (bfd *ignore);
 148 long bfd_0l
 149   (bfd *ignore);
 150 long _bfd_n1
 151   (bfd *ignore);
 152 void bfd_void
 153   (bfd *ignore);
 154
 155 bfd *_bfd_new_bfd_contained_in
 156   (bfd *);
 157 const bfd_target *_bfd_dummy_target
 158   (bfd *abfd);
 159
 160 void bfd_dont_truncate_arname
 161   (bfd *abfd, const char *filename, char *hdr);
 162 void bfd_bsd_truncate_arname
 163   (bfd *abfd, const char *filename, char *hdr);
 164 void bfd_gnu_truncate_arname
 165   (bfd *abfd, const char *filename, char *hdr);
 166
 167 bfd_boolean bsd_write_armap
 168   (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
 169    int stridx);
 170
 171 bfd_boolean coff_write_armap
 172   (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
 173    int stridx);
 174
 175 extern void *_bfd_generic_read_ar_hdr
 176   (bfd *);
 177
 178 extern void *_bfd_generic_read_ar_hdr_mag
 179   (bfd *, const char *);
 180
 181 bfd * bfd_generic_openr_next_archived_file
 182   (bfd *archive, bfd *last_file);
 183
 184 int bfd_generic_stat_arch_elt
 185   (bfd *, struct stat *);
 186
 187 #define _bfd_read_ar_hdr(abfd) \
 188   BFD_SEND (abfd, _bfd_read_ar_hdr_fn, (abfd))
 189 \f
 190 /* Generic routines to use for BFD_JUMP_TABLE_GENERIC.  Use
 191    BFD_JUMP_TABLE_GENERIC (_bfd_generic).  */
 192
 193 #define _bfd_generic_close_and_cleanup bfd_true
 194 #define _bfd_generic_bfd_free_cached_info bfd_true
 195 #define _bfd_generic_new_section_hook \
 196   ((bfd_boolean (*) (bfd *, asection *)) bfd_true)
 197 extern bfd_boolean _bfd_generic_get_section_contents
 198   (bfd *, asection *, void *, file_ptr, bfd_size_type);
 199 extern bfd_boolean _bfd_generic_get_section_contents_in_window
 200   (bfd *, asection *, bfd_window *, file_ptr, bfd_size_type);
 201
 202 /* Generic routines to use for BFD_JUMP_TABLE_COPY.  Use
 203    BFD_JUMP_TABLE_COPY (_bfd_generic).  */
 204
 205 #define _bfd_generic_bfd_copy_private_bfd_data \
 206   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 207 #define _bfd_generic_bfd_merge_private_bfd_data \
 208   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 209 #define _bfd_generic_bfd_set_private_flags \
 210   ((bfd_boolean (*) (bfd *, flagword)) bfd_true)
 211 #define _bfd_generic_bfd_copy_private_section_data \
 212   ((bfd_boolean (*) (bfd *, asection *, bfd *, asection *)) bfd_true)
 213 #define _bfd_generic_bfd_copy_private_symbol_data \
 214   ((bfd_boolean (*) (bfd *, asymbol *, bfd *, asymbol *)) bfd_true)
 215 #define _bfd_generic_bfd_print_private_bfd_data \
 216   ((bfd_boolean (*) (bfd *, void *)) bfd_true)
 217
 218 /* Routines to use for BFD_JUMP_TABLE_CORE when there is no core file
 219    support.  Use BFD_JUMP_TABLE_CORE (_bfd_nocore).  */
 220
 221 extern char *_bfd_nocore_core_file_failing_command
 222   (bfd *);
 223 extern int _bfd_nocore_core_file_failing_signal
 224   (bfd *);
 225 extern bfd_boolean _bfd_nocore_core_file_matches_executable_p
 226   (bfd *, bfd *);
 227
 228 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE when there is no archive
 229    file support.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive).  */
 230
 231 #define _bfd_noarchive_slurp_armap bfd_false
 232 #define _bfd_noarchive_slurp_extended_name_table bfd_false
 233 #define _bfd_noarchive_construct_extended_name_table \
 234   ((bfd_boolean (*) (bfd *, char **, bfd_size_type *, const char **)) \
 235    bfd_false)
 236 #define _bfd_noarchive_truncate_arname \
 237   ((void (*) (bfd *, const char *, char *)) bfd_void)
 238 #define _bfd_noarchive_write_armap \
 239   ((bfd_boolean (*) (bfd *, unsigned int, struct orl *, unsigned int, int)) \
 240    bfd_false)
 241 #define _bfd_noarchive_read_ar_hdr bfd_nullvoidptr
 242 #define _bfd_noarchive_openr_next_archived_file \
 243   ((bfd *(*) (bfd *, bfd *)) bfd_nullvoidptr)
 244 #define _bfd_noarchive_get_elt_at_index \
 245   ((bfd *(*) (bfd *, symindex)) bfd_nullvoidptr)
 246 #define _bfd_noarchive_generic_stat_arch_elt bfd_generic_stat_arch_elt
 247 #define _bfd_noarchive_update_armap_timestamp bfd_false
 248
 249 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD style
 250    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd).  */
 251
 252 #define _bfd_archive_bsd_slurp_armap bfd_slurp_bsd_armap
 253 #define _bfd_archive_bsd_slurp_extended_name_table \
 254   _bfd_slurp_extended_name_table
 255 extern bfd_boolean _bfd_archive_bsd_construct_extended_name_table
 256   (bfd *, char **, bfd_size_type *, const char **);
 257 #define _bfd_archive_bsd_truncate_arname bfd_bsd_truncate_arname
 258 #define _bfd_archive_bsd_write_armap bsd_write_armap
 259 #define _bfd_archive_bsd_read_ar_hdr _bfd_generic_read_ar_hdr
 260 #define _bfd_archive_bsd_openr_next_archived_file \
 261   bfd_generic_openr_next_archived_file
 262 #define _bfd_archive_bsd_get_elt_at_index _bfd_generic_get_elt_at_index
 263 #define _bfd_archive_bsd_generic_stat_arch_elt \
 264   bfd_generic_stat_arch_elt
 265 extern bfd_boolean _bfd_archive_bsd_update_armap_timestamp
 266   (bfd *);
 267
 268 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get COFF style
 269    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff).  */
 270
 271 #define _bfd_archive_coff_slurp_armap bfd_slurp_coff_armap
 272 #define _bfd_archive_coff_slurp_extended_name_table \
 273   _bfd_slurp_extended_name_table
 274 extern bfd_boolean _bfd_archive_coff_construct_extended_name_table
 275   (bfd *, char **, bfd_size_type *, const char **);
 276 #define _bfd_archive_coff_truncate_arname bfd_dont_truncate_arname
 277 #define _bfd_archive_coff_write_armap coff_write_armap
 278 #define _bfd_archive_coff_read_ar_hdr _bfd_generic_read_ar_hdr
 279 #define _bfd_archive_coff_openr_next_archived_file \
 280   bfd_generic_openr_next_archived_file
 281 #define _bfd_archive_coff_get_elt_at_index _bfd_generic_get_elt_at_index
 282 #define _bfd_archive_coff_generic_stat_arch_elt \
 283   bfd_generic_stat_arch_elt
 284 #define _bfd_archive_coff_update_armap_timestamp bfd_true
 285
 286 /* Routines to use for BFD_JUMP_TABLE_SYMBOLS where there is no symbol
 287    support.  Use BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols).  */
 288
 289 #define _bfd_nosymbols_get_symtab_upper_bound _bfd_n1
 290 #define _bfd_nosymbols_canonicalize_symtab \
 291   ((long (*) (bfd *, asymbol **)) _bfd_n1)
 292 #define _bfd_nosymbols_make_empty_symbol _bfd_generic_make_empty_symbol
 293 #define _bfd_nosymbols_print_symbol \
 294   ((void (*) (bfd *, void *, asymbol *, bfd_print_symbol_type)) bfd_void)
 295 #define _bfd_nosymbols_get_symbol_info \
 296   ((void (*) (bfd *, asymbol *, symbol_info *)) bfd_void)
 297 #define _bfd_nosymbols_bfd_is_local_label_name \
 298   ((bfd_boolean (*) (bfd *, const char *)) bfd_false)
 299 #define _bfd_nosymbols_get_lineno \
 300   ((alent *(*) (bfd *, asymbol *)) bfd_nullvoidptr)
 301 #define _bfd_nosymbols_find_nearest_line \
 302   ((bfd_boolean (*) (bfd *, asection *, asymbol **, bfd_vma, const char **, \
 303                      const char **, unsigned int *)) \
 304    bfd_false)
 305 #define _bfd_nosymbols_bfd_make_debug_symbol \
 306   ((asymbol *(*) (bfd *, void *, unsigned long)) bfd_nullvoidptr)
 307 #define _bfd_nosymbols_read_minisymbols \
 308   ((long (*) (bfd *, bfd_boolean, void **, unsigned int *)) _bfd_n1)
 309 #define _bfd_nosymbols_minisymbol_to_symbol \
 310   ((asymbol *(*) (bfd *, bfd_boolean, const void *, asymbol *)) \
 311    bfd_nullvoidptr)
 312
 313 /* Routines to use for BFD_JUMP_TABLE_RELOCS when there is no reloc
 314    support.  Use BFD_JUMP_TABLE_RELOCS (_bfd_norelocs).  */
 315
 316 #define _bfd_norelocs_get_reloc_upper_bound \
 317   ((long (*) (bfd *, asection *)) _bfd_n1)
 318 #define _bfd_norelocs_canonicalize_reloc \
 319   ((long (*) (bfd *, asection *, arelent **, asymbol **)) _bfd_n1)
 320 #define _bfd_norelocs_bfd_reloc_type_lookup \
 321   ((reloc_howto_type *(*) (bfd *, bfd_reloc_code_real_type)) bfd_nullvoidptr)
 322
 323 /* Routines to use for BFD_JUMP_TABLE_WRITE for targets which may not
 324    be written.  Use BFD_JUMP_TABLE_WRITE (_bfd_nowrite).  */
 325
 326 #define _bfd_nowrite_set_arch_mach \
 327   ((bfd_boolean (*) (bfd *, enum bfd_architecture, unsigned long)) \
 328    bfd_false)
 329 #define _bfd_nowrite_set_section_contents \
 330   ((bfd_boolean (*) (bfd *, asection *, const void *, file_ptr, bfd_size_type)) \
 331    bfd_false)
 332
 333 /* Generic routines to use for BFD_JUMP_TABLE_WRITE.  Use
 334    BFD_JUMP_TABLE_WRITE (_bfd_generic).  */
 335
 336 #define _bfd_generic_set_arch_mach bfd_default_set_arch_mach
 337 extern bfd_boolean _bfd_generic_set_section_contents
 338   (bfd *, asection *, const void *, file_ptr, bfd_size_type);
 339
 340 /* Routines to use for BFD_JUMP_TABLE_LINK for targets which do not
 341    support linking.  Use BFD_JUMP_TABLE_LINK (_bfd_nolink).  */
 342
 343 #define _bfd_nolink_sizeof_headers ((int (*) (bfd *, bfd_boolean)) bfd_0)
 344 #define _bfd_nolink_bfd_get_relocated_section_contents \
 345   ((bfd_byte *(*) (bfd *, struct bfd_link_info *, struct bfd_link_order *, \
 346                    bfd_byte *, bfd_boolean, asymbol **)) \
 347    bfd_nullvoidptr)
 348 #define _bfd_nolink_bfd_relax_section \
 349   ((bfd_boolean (*) \
 350     (bfd *, asection *, struct bfd_link_info *, bfd_boolean *)) \
 351    bfd_false)
 352 #define _bfd_nolink_bfd_gc_sections \
 353   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
 354    bfd_false)
 355 #define _bfd_nolink_bfd_merge_sections \
 356   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
 357    bfd_false)
 358 #define _bfd_nolink_bfd_discard_group \
 359   ((bfd_boolean (*) (bfd *, struct bfd_section *)) \
 360    bfd_false)
 361 #define _bfd_nolink_bfd_link_hash_table_create \
 362   ((struct bfd_link_hash_table *(*) (bfd *)) bfd_nullvoidptr)
 363 #define _bfd_nolink_bfd_link_hash_table_free \
 364   ((void (*) (struct bfd_link_hash_table *)) bfd_void)
 365 #define _bfd_nolink_bfd_link_add_symbols \
 366   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
 367 #define _bfd_nolink_bfd_link_just_syms \
 368   ((void (*) (asection *, struct bfd_link_info *)) bfd_void)
 369 #define _bfd_nolink_bfd_final_link \
 370   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
 371 #define _bfd_nolink_bfd_link_split_section \
 372   ((bfd_boolean (*) (bfd *, struct bfd_section *)) bfd_false)
 373
 374 /* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
 375    have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
 376    (_bfd_nodynamic).  */
 377
 378 #define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_n1
 379 #define _bfd_nodynamic_canonicalize_dynamic_symtab \
 380   ((long (*) (bfd *, asymbol **)) _bfd_n1)
 381 #define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_n1
 382 #define _bfd_nodynamic_canonicalize_dynamic_reloc \
 383   ((long (*) (bfd *, arelent **, asymbol **)) _bfd_n1)
 384 \f
 385 /* Generic routine to determine of the given symbol is a local
 386    label.  */
 387 extern bfd_boolean bfd_generic_is_local_label_name
 388   (bfd *, const char *);
 389
 390 /* Generic minisymbol routines.  */
 391 extern long _bfd_generic_read_minisymbols
 392   (bfd *, bfd_boolean, void **, unsigned int *);
 393 extern asymbol *_bfd_generic_minisymbol_to_symbol
 394   (bfd *, bfd_boolean, const void *, asymbol *);
 395
 396 /* Find the nearest line using .stab/.stabstr sections.  */
 397 extern bfd_boolean _bfd_stab_section_find_nearest_line
 398   (bfd *, asymbol **, asection *, bfd_vma, bfd_boolean *,
 399    const char **, const char **, unsigned int *, void **);
 400
 401 /* Find the neaderst line using DWARF 1 debugging information.  */
 402 extern bfd_boolean _bfd_dwarf1_find_nearest_line
 403   (bfd *, asection *, asymbol **, bfd_vma, const char **,
 404    const char **, unsigned int *);
 405
 406 /* Find the nearest line using DWARF 2 debugging information.  */
 407 extern bfd_boolean _bfd_dwarf2_find_nearest_line
 408   (bfd *, asection *, asymbol **, bfd_vma, const char **, const char **,
 409    unsigned int *, unsigned int, void **);
 410
 411 /* Create a new section entry.  */
 412 extern struct bfd_hash_entry *bfd_section_hash_newfunc
 413   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 414
 415 /* A routine to create entries for a bfd_link_hash_table.  */
 416 extern struct bfd_hash_entry *_bfd_link_hash_newfunc
 417   (struct bfd_hash_entry *entry, struct bfd_hash_table *table,
 418    const char *string);
 419
 420 /* Initialize a bfd_link_hash_table.  */
 421 extern bfd_boolean _bfd_link_hash_table_init
 422   (struct bfd_link_hash_table *, bfd *,
 423    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 424                                struct bfd_hash_table *,
 425                                const char *));
 426
 427 /* Generic link hash table creation routine.  */
 428 extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
 429   (bfd *);
 430
 431 /* Generic link hash table destruction routine.  */
 432 extern void _bfd_generic_link_hash_table_free
 433   (struct bfd_link_hash_table *);
 434
 435 /* Generic add symbol routine.  */
 436 extern bfd_boolean _bfd_generic_link_add_symbols
 437   (bfd *, struct bfd_link_info *);
 438
 439 /* Generic add symbol routine.  This version is used by targets for
 440    which the linker must collect constructors and destructors by name,
 441    as the collect2 program does.  */
 442 extern bfd_boolean _bfd_generic_link_add_symbols_collect
 443   (bfd *, struct bfd_link_info *);
 444
 445 /* Generic archive add symbol routine.  */
 446 extern bfd_boolean _bfd_generic_link_add_archive_symbols
 447   (bfd *, struct bfd_link_info *,
 448    bfd_boolean (*) (bfd *, struct bfd_link_info *, bfd_boolean *));
 449
 450 /* Forward declaration to avoid prototype errors.  */
 451 typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
 452
 453 /* Generic routine to add a single symbol.  */
 454 extern bfd_boolean _bfd_generic_link_add_one_symbol
 455   (struct bfd_link_info *, bfd *, const char *name, flagword,
 456    asection *, bfd_vma, const char *, bfd_boolean copy,
 457    bfd_boolean constructor, struct bfd_link_hash_entry **);
 458
 459 /* Generic routine to mark section as supplying symbols only.  */
 460 extern void _bfd_generic_link_just_syms
 461   (asection *, struct bfd_link_info *);
 462
 463 /* Generic link routine.  */
 464 extern bfd_boolean _bfd_generic_final_link
 465   (bfd *, struct bfd_link_info *);
 466
 467 extern bfd_boolean _bfd_generic_link_split_section
 468   (bfd *, struct bfd_section *);
 469
 470 /* Generic reloc_link_order processing routine.  */
 471 extern bfd_boolean _bfd_generic_reloc_link_order
 472   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
 473
 474 /* Default link order processing routine.  */
 475 extern bfd_boolean _bfd_default_link_order
 476   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
 477
 478 /* Count the number of reloc entries in a link order list.  */
 479 extern unsigned int _bfd_count_link_order_relocs
 480   (struct bfd_link_order *);
 481
 482 /* Final link relocation routine.  */
 483 extern bfd_reloc_status_type _bfd_final_link_relocate
 484   (reloc_howto_type *, bfd *, asection *, bfd_byte *,
 485    bfd_vma, bfd_vma, bfd_vma);
 486
 487 /* Relocate a particular location by a howto and a value.  */
 488 extern bfd_reloc_status_type _bfd_relocate_contents
 489   (reloc_howto_type *, bfd *, bfd_vma, bfd_byte *);
 490
 491 /* Link stabs in sections in the first pass.  */
 492
 493 extern bfd_boolean _bfd_link_section_stabs
 494   (bfd *, void **, asection *, asection *, void **, bfd_size_type *);
 495
 496 /* Eliminate stabs for discarded functions and symbols.  */
 497 extern bfd_boolean _bfd_discard_section_stabs
 498   (bfd *, asection *, void *, bfd_boolean (*) (bfd_vma, void *), void *);
 499
 500 /* Write out the .stab section when linking stabs in sections.  */
 501
 502 extern bfd_boolean _bfd_write_section_stabs
 503   (bfd *, void **, asection *, void **, bfd_byte *);
 504
 505 /* Write out the .stabstr string table when linking stabs in sections.  */
 506
 507 extern bfd_boolean _bfd_write_stab_strings
 508   (bfd *, void **);
 509
 510 /* Find an offset within a .stab section when linking stabs in
 511    sections.  */
 512
 513 extern bfd_vma _bfd_stab_section_offset
 514   (bfd *, void **, asection *, void **, bfd_vma);
 515
 516 /* Attempt to merge a SEC_MERGE section.  */
 517
 518 extern bfd_boolean _bfd_merge_section
 519   (bfd *, void **, asection *, void **);
 520
 521 /* Attempt to merge SEC_MERGE sections.  */
 522
 523 extern bfd_boolean _bfd_merge_sections
 524   (bfd *, void *, void (*) (bfd *, asection *));
 525
 526 /* Write out a merged section.  */
 527
 528 extern bfd_boolean _bfd_write_merged_section
 529   (bfd *, asection *, void *);
 530
 531 /* Find an offset within a modified SEC_MERGE section.  */
 532
 533 extern bfd_vma _bfd_merged_section_offset
 534   (bfd *, asection **, void *, bfd_vma, bfd_vma);
 535
 536 /* Create a string table.  */
 537 extern struct bfd_strtab_hash *_bfd_stringtab_init
 538   (void);
 539
 540 /* Create an XCOFF .debug section style string table.  */
 541 extern struct bfd_strtab_hash *_bfd_xcoff_stringtab_init
 542   (void);
 543
 544 /* Free a string table.  */
 545 extern void _bfd_stringtab_free
 546   (struct bfd_strtab_hash *);
 547
 548 /* Get the size of a string table.  */
 549 extern bfd_size_type _bfd_stringtab_size
 550   (struct bfd_strtab_hash *);
 551
 552 /* Add a string to a string table.  */
 553 extern bfd_size_type _bfd_stringtab_add
 554   (struct bfd_strtab_hash *, const char *, bfd_boolean hash, bfd_boolean copy);
 555
 556 /* Write out a string table.  */
 557 extern bfd_boolean _bfd_stringtab_emit
 558   (bfd *, struct bfd_strtab_hash *);
 559
 560 /* Check that endianness of input and output file match.  */
 561 extern bfd_boolean _bfd_generic_verify_endian_match
 562   (bfd *, bfd *);
 563 \f
 564 /* Macros to tell if bfds are read or write enabled.
 565
 566    Note that bfds open for read may be scribbled into if the fd passed
 567    to bfd_fdopenr is actually open both for read and write
 568    simultaneously.  However an output bfd will never be open for
 569    read.  Therefore sometimes you want to check bfd_read_p or
 570    !bfd_read_p, and only sometimes bfd_write_p.
 571 */
 572
 573 #define bfd_read_p(abfd) \
 574   ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
 575 #define bfd_write_p(abfd) \
 576   ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
 577
 578 void bfd_assert
 579   (const char*,int);
 580
 581 #define BFD_ASSERT(x) \
 582   { if (!(x)) bfd_assert(__FILE__,__LINE__); }
 583
 584 #define BFD_FAIL() \
 585   { bfd_assert(__FILE__,__LINE__); }
 586
 587 extern void _bfd_abort
 588   (const char *, int, const char *) ATTRIBUTE_NORETURN;
 589
 590 /* if gcc >= 2.6, we can give a function name, too */
 591 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
 592 #define __PRETTY_FUNCTION__  ((char *) NULL)
 593 #endif
 594
 595 #undef abort
 596 #define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
 597
 598 /* Manipulate a system FILE but using BFD's "file_ptr", rather than
 599    the system "off_t" or "off64_t", as the offset.  */
 600 extern file_ptr real_ftell (FILE *file);
 601 extern int real_fseek (FILE *file, file_ptr offset, int whence);
 602
 603 FILE *  bfd_cache_lookup_worker
 604   (bfd *);
 605
 606 extern bfd *bfd_last_cache;
 607
 608 /* List of supported target vectors, and the default vector (if
 609    bfd_default_vector[0] is NULL, there is no default).  */
 610 extern const bfd_target * const *bfd_target_vector;
 611 extern const bfd_target *bfd_default_vector[];
 612
 613 /* List of associated target vectors.  */
 614 extern const bfd_target * const *bfd_associated_vector;
 615
 616 /* Functions shared by the ECOFF and MIPS ELF backends, which have no
 617    other common header files.  */
 618
 619 #if defined(__STDC__) || defined(ALMOST_STDC)
 620 struct ecoff_find_line;
 621 #endif
 622
 623 extern bfd_boolean _bfd_ecoff_locate_line
 624   (bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
 625    const struct ecoff_debug_swap * const, struct ecoff_find_line *,
 626    const char **, const char **, unsigned int *);
 627 extern bfd_boolean _bfd_ecoff_get_accumulated_pdr
 628   (void *, bfd_byte *);
 629 extern bfd_boolean _bfd_ecoff_get_accumulated_sym
 630   (void *, bfd_byte *);
 631 extern bfd_boolean _bfd_ecoff_get_accumulated_ss
 632   (void *, bfd_byte *);
 633
 634 extern bfd_vma _bfd_get_gp_value
 635   (bfd *);
 636 extern void _bfd_set_gp_value
 637   (bfd *, bfd_vma);
 638
 639 /* Function shared by the COFF and ELF SH backends, which have no
 640    other common header files.  */
 641
 642 #ifndef _bfd_sh_align_load_span
 643 extern bfd_boolean _bfd_sh_align_load_span
 644   (bfd *, asection *, bfd_byte *,
 645    bfd_boolean (*) (bfd *, asection *, void *, bfd_byte *, bfd_vma),
 646    void *, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, bfd_boolean *);
 647 #endif