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