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 void _bfd_default_error_handler (const char *s, ...);
  95 extern bfd_error_handler_type _bfd_error_handler;
  96
  97 /* These routines allocate and free things on the BFD's objalloc.  */
  98
  99 extern void *bfd_alloc
 100   (bfd *, bfd_size_type);
 101 extern void *bfd_zalloc
 102   (bfd *, bfd_size_type);
 103 extern void bfd_release
 104   (bfd *, void *);
 105
 106 bfd * _bfd_create_empty_archive_element_shell
 107   (bfd *obfd);
 108 bfd * _bfd_look_for_bfd_in_cache
 109   (bfd *, file_ptr);
 110 bfd_boolean _bfd_add_bfd_to_archive_cache
 111   (bfd *, file_ptr, bfd *);
 112 bfd_boolean _bfd_generic_mkarchive
 113   (bfd *abfd);
 114 const bfd_target *bfd_generic_archive_p
 115   (bfd *abfd);
 116 bfd_boolean bfd_slurp_armap
 117   (bfd *abfd);
 118 bfd_boolean bfd_slurp_bsd_armap_f2
 119   (bfd *abfd);
 120 #define bfd_slurp_bsd_armap bfd_slurp_armap
 121 #define bfd_slurp_coff_armap bfd_slurp_armap
 122 bfd_boolean _bfd_slurp_extended_name_table
 123   (bfd *abfd);
 124 extern bfd_boolean _bfd_construct_extended_name_table
 125   (bfd *, bfd_boolean, char **, bfd_size_type *);
 126 bfd_boolean _bfd_write_archive_contents
 127   (bfd *abfd);
 128 bfd_boolean _bfd_compute_and_write_armap
 129   (bfd *, unsigned int elength);
 130 bfd *_bfd_get_elt_at_filepos
 131   (bfd *archive, file_ptr filepos);
 132 extern bfd *_bfd_generic_get_elt_at_index
 133   (bfd *, symindex);
 134 bfd * _bfd_new_bfd
 135   (void);
 136 void _bfd_delete_bfd
 137   (bfd *);
 138
 139 bfd_boolean bfd_false
 140   (bfd *ignore);
 141 bfd_boolean bfd_true
 142   (bfd *ignore);
 143 void *bfd_nullvoidptr
 144   (bfd *ignore);
 145 int bfd_0
 146   (bfd *ignore);
 147 unsigned int bfd_0u
 148   (bfd *ignore);
 149 long bfd_0l
 150   (bfd *ignore);
 151 long _bfd_n1
 152   (bfd *ignore);
 153 void bfd_void
 154   (bfd *ignore);
 155
 156 bfd *_bfd_new_bfd_contained_in
 157   (bfd *);
 158 const bfd_target *_bfd_dummy_target
 159   (bfd *abfd);
 160
 161 void bfd_dont_truncate_arname
 162   (bfd *abfd, const char *filename, char *hdr);
 163 void bfd_bsd_truncate_arname
 164   (bfd *abfd, const char *filename, char *hdr);
 165 void bfd_gnu_truncate_arname
 166   (bfd *abfd, const char *filename, char *hdr);
 167
 168 bfd_boolean bsd_write_armap
 169   (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
 170    int stridx);
 171
 172 bfd_boolean coff_write_armap
 173   (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
 174    int stridx);
 175
 176 extern void *_bfd_generic_read_ar_hdr
 177   (bfd *);
 178
 179 extern void *_bfd_generic_read_ar_hdr_mag
 180   (bfd *, const char *);
 181
 182 bfd * bfd_generic_openr_next_archived_file
 183   (bfd *archive, bfd *last_file);
 184
 185 int bfd_generic_stat_arch_elt
 186   (bfd *, struct stat *);
 187
 188 #define _bfd_read_ar_hdr(abfd) \
 189   BFD_SEND (abfd, _bfd_read_ar_hdr_fn, (abfd))
 190 \f
 191 /* Generic routines to use for BFD_JUMP_TABLE_GENERIC.  Use
 192    BFD_JUMP_TABLE_GENERIC (_bfd_generic).  */
 193
 194 #define _bfd_generic_close_and_cleanup bfd_true
 195 #define _bfd_generic_bfd_free_cached_info bfd_true
 196 #define _bfd_generic_new_section_hook \
 197   ((bfd_boolean (*) (bfd *, asection *)) bfd_true)
 198 extern bfd_boolean _bfd_generic_get_section_contents
 199   (bfd *, asection *, void *, file_ptr, bfd_size_type);
 200 extern bfd_boolean _bfd_generic_get_section_contents_in_window
 201   (bfd *, asection *, bfd_window *, file_ptr, bfd_size_type);
 202
 203 /* Generic routines to use for BFD_JUMP_TABLE_COPY.  Use
 204    BFD_JUMP_TABLE_COPY (_bfd_generic).  */
 205
 206 #define _bfd_generic_bfd_copy_private_bfd_data \
 207   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 208 #define _bfd_generic_bfd_merge_private_bfd_data \
 209   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 210 #define _bfd_generic_bfd_set_private_flags \
 211   ((bfd_boolean (*) (bfd *, flagword)) bfd_true)
 212 #define _bfd_generic_bfd_copy_private_section_data \
 213   ((bfd_boolean (*) (bfd *, asection *, bfd *, asection *)) bfd_true)
 214 #define _bfd_generic_bfd_copy_private_symbol_data \
 215   ((bfd_boolean (*) (bfd *, asymbol *, bfd *, asymbol *)) bfd_true)
 216 #define _bfd_generic_bfd_copy_private_header_data \
 217   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 218 #define _bfd_generic_bfd_print_private_bfd_data \
 219   ((bfd_boolean (*) (bfd *, void *)) bfd_true)
 220
 221 /* Routines to use for BFD_JUMP_TABLE_CORE when there is no core file
 222    support.  Use BFD_JUMP_TABLE_CORE (_bfd_nocore).  */
 223
 224 extern char *_bfd_nocore_core_file_failing_command
 225   (bfd *);
 226 extern int _bfd_nocore_core_file_failing_signal
 227   (bfd *);
 228 extern bfd_boolean _bfd_nocore_core_file_matches_executable_p
 229   (bfd *, bfd *);
 230
 231 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE when there is no archive
 232    file support.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive).  */
 233
 234 #define _bfd_noarchive_slurp_armap bfd_false
 235 #define _bfd_noarchive_slurp_extended_name_table bfd_false
 236 #define _bfd_noarchive_construct_extended_name_table \
 237   ((bfd_boolean (*) (bfd *, char **, bfd_size_type *, const char **)) \
 238    bfd_false)
 239 #define _bfd_noarchive_truncate_arname \
 240   ((void (*) (bfd *, const char *, char *)) bfd_void)
 241 #define _bfd_noarchive_write_armap \
 242   ((bfd_boolean (*) (bfd *, unsigned int, struct orl *, unsigned int, int)) \
 243    bfd_false)
 244 #define _bfd_noarchive_read_ar_hdr bfd_nullvoidptr
 245 #define _bfd_noarchive_openr_next_archived_file \
 246   ((bfd *(*) (bfd *, bfd *)) bfd_nullvoidptr)
 247 #define _bfd_noarchive_get_elt_at_index \
 248   ((bfd *(*) (bfd *, symindex)) bfd_nullvoidptr)
 249 #define _bfd_noarchive_generic_stat_arch_elt bfd_generic_stat_arch_elt
 250 #define _bfd_noarchive_update_armap_timestamp bfd_false
 251
 252 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD style
 253    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd).  */
 254
 255 #define _bfd_archive_bsd_slurp_armap bfd_slurp_bsd_armap
 256 #define _bfd_archive_bsd_slurp_extended_name_table \
 257   _bfd_slurp_extended_name_table
 258 extern bfd_boolean _bfd_archive_bsd_construct_extended_name_table
 259   (bfd *, char **, bfd_size_type *, const char **);
 260 #define _bfd_archive_bsd_truncate_arname bfd_bsd_truncate_arname
 261 #define _bfd_archive_bsd_write_armap bsd_write_armap
 262 #define _bfd_archive_bsd_read_ar_hdr _bfd_generic_read_ar_hdr
 263 #define _bfd_archive_bsd_openr_next_archived_file \
 264   bfd_generic_openr_next_archived_file
 265 #define _bfd_archive_bsd_get_elt_at_index _bfd_generic_get_elt_at_index
 266 #define _bfd_archive_bsd_generic_stat_arch_elt \
 267   bfd_generic_stat_arch_elt
 268 extern bfd_boolean _bfd_archive_bsd_update_armap_timestamp
 269   (bfd *);
 270
 271 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get COFF style
 272    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff).  */
 273
 274 #define _bfd_archive_coff_slurp_armap bfd_slurp_coff_armap
 275 #define _bfd_archive_coff_slurp_extended_name_table \
 276   _bfd_slurp_extended_name_table
 277 extern bfd_boolean _bfd_archive_coff_construct_extended_name_table
 278   (bfd *, char **, bfd_size_type *, const char **);
 279 #define _bfd_archive_coff_truncate_arname bfd_dont_truncate_arname
 280 #define _bfd_archive_coff_write_armap coff_write_armap
 281 #define _bfd_archive_coff_read_ar_hdr _bfd_generic_read_ar_hdr
 282 #define _bfd_archive_coff_openr_next_archived_file \
 283   bfd_generic_openr_next_archived_file
 284 #define _bfd_archive_coff_get_elt_at_index _bfd_generic_get_elt_at_index
 285 #define _bfd_archive_coff_generic_stat_arch_elt \
 286   bfd_generic_stat_arch_elt
 287 #define _bfd_archive_coff_update_armap_timestamp bfd_true
 288
 289 /* Routines to use for BFD_JUMP_TABLE_SYMBOLS where there is no symbol
 290    support.  Use BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols).  */
 291
 292 #define _bfd_nosymbols_get_symtab_upper_bound _bfd_n1
 293 #define _bfd_nosymbols_canonicalize_symtab \
 294   ((long (*) (bfd *, asymbol **)) _bfd_n1)
 295 #define _bfd_nosymbols_make_empty_symbol _bfd_generic_make_empty_symbol
 296 #define _bfd_nosymbols_print_symbol \
 297   ((void (*) (bfd *, void *, asymbol *, bfd_print_symbol_type)) bfd_void)
 298 #define _bfd_nosymbols_get_symbol_info \
 299   ((void (*) (bfd *, asymbol *, symbol_info *)) bfd_void)
 300 #define _bfd_nosymbols_bfd_is_local_label_name \
 301   ((bfd_boolean (*) (bfd *, const char *)) bfd_false)
 302 #define _bfd_nosymbols_get_lineno \
 303   ((alent *(*) (bfd *, asymbol *)) bfd_nullvoidptr)
 304 #define _bfd_nosymbols_find_nearest_line \
 305   ((bfd_boolean (*) (bfd *, asection *, asymbol **, bfd_vma, const char **, \
 306                      const char **, unsigned int *)) \
 307    bfd_false)
 308 #define _bfd_nosymbols_bfd_make_debug_symbol \
 309   ((asymbol *(*) (bfd *, void *, unsigned long)) bfd_nullvoidptr)
 310 #define _bfd_nosymbols_read_minisymbols \
 311   ((long (*) (bfd *, bfd_boolean, void **, unsigned int *)) _bfd_n1)
 312 #define _bfd_nosymbols_minisymbol_to_symbol \
 313   ((asymbol *(*) (bfd *, bfd_boolean, const void *, asymbol *)) \
 314    bfd_nullvoidptr)
 315
 316 /* Routines to use for BFD_JUMP_TABLE_RELOCS when there is no reloc
 317    support.  Use BFD_JUMP_TABLE_RELOCS (_bfd_norelocs).  */
 318
 319 #define _bfd_norelocs_get_reloc_upper_bound \
 320   ((long (*) (bfd *, asection *)) _bfd_n1)
 321 #define _bfd_norelocs_canonicalize_reloc \
 322   ((long (*) (bfd *, asection *, arelent **, asymbol **)) _bfd_n1)
 323 #define _bfd_norelocs_bfd_reloc_type_lookup \
 324   ((reloc_howto_type *(*) (bfd *, bfd_reloc_code_real_type)) bfd_nullvoidptr)
 325
 326 /* Routines to use for BFD_JUMP_TABLE_WRITE for targets which may not
 327    be written.  Use BFD_JUMP_TABLE_WRITE (_bfd_nowrite).  */
 328
 329 #define _bfd_nowrite_set_arch_mach \
 330   ((bfd_boolean (*) (bfd *, enum bfd_architecture, unsigned long)) \
 331    bfd_false)
 332 #define _bfd_nowrite_set_section_contents \
 333   ((bfd_boolean (*) (bfd *, asection *, const void *, file_ptr, bfd_size_type)) \
 334    bfd_false)
 335
 336 /* Generic routines to use for BFD_JUMP_TABLE_WRITE.  Use
 337    BFD_JUMP_TABLE_WRITE (_bfd_generic).  */
 338
 339 #define _bfd_generic_set_arch_mach bfd_default_set_arch_mach
 340 extern bfd_boolean _bfd_generic_set_section_contents
 341   (bfd *, asection *, const void *, file_ptr, bfd_size_type);
 342
 343 /* Routines to use for BFD_JUMP_TABLE_LINK for targets which do not
 344    support linking.  Use BFD_JUMP_TABLE_LINK (_bfd_nolink).  */
 345
 346 #define _bfd_nolink_sizeof_headers ((int (*) (bfd *, bfd_boolean)) bfd_0)
 347 #define _bfd_nolink_bfd_get_relocated_section_contents \
 348   ((bfd_byte *(*) (bfd *, struct bfd_link_info *, struct bfd_link_order *, \
 349                    bfd_byte *, bfd_boolean, asymbol **)) \
 350    bfd_nullvoidptr)
 351 #define _bfd_nolink_bfd_relax_section \
 352   ((bfd_boolean (*) \
 353     (bfd *, asection *, struct bfd_link_info *, bfd_boolean *)) \
 354    bfd_false)
 355 #define _bfd_nolink_bfd_gc_sections \
 356   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
 357    bfd_false)
 358 #define _bfd_nolink_bfd_merge_sections \
 359   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
 360    bfd_false)
 361 #define _bfd_nolink_bfd_is_group_section \
 362   ((bfd_boolean (*) (bfd *, const struct bfd_section *)) \
 363    bfd_false)
 364 #define _bfd_nolink_bfd_discard_group \
 365   ((bfd_boolean (*) (bfd *, struct bfd_section *)) \
 366    bfd_false)
 367 #define _bfd_nolink_bfd_link_hash_table_create \
 368   ((struct bfd_link_hash_table *(*) (bfd *)) bfd_nullvoidptr)
 369 #define _bfd_nolink_bfd_link_hash_table_free \
 370   ((void (*) (struct bfd_link_hash_table *)) bfd_void)
 371 #define _bfd_nolink_bfd_link_add_symbols \
 372   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
 373 #define _bfd_nolink_bfd_link_just_syms \
 374   ((void (*) (asection *, struct bfd_link_info *)) bfd_void)
 375 #define _bfd_nolink_bfd_final_link \
 376   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
 377 #define _bfd_nolink_bfd_link_split_section \
 378   ((bfd_boolean (*) (bfd *, struct bfd_section *)) bfd_false)
 379 #define _bfd_nolink_section_already_linked \
 380   ((void (*) (bfd *, struct bfd_section *)) bfd_void)
 381
 382 /* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
 383    have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
 384    (_bfd_nodynamic).  */
 385
 386 #define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_n1
 387 #define _bfd_nodynamic_canonicalize_dynamic_symtab \
 388   ((long (*) (bfd *, asymbol **)) _bfd_n1)
 389 #define _bfd_nodynamic_get_synthetic_symtab \
 390   ((long (*) (bfd *, asymbol **, asymbol **)) _bfd_n1)
 391 #define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_n1
 392 #define _bfd_nodynamic_canonicalize_dynamic_reloc \
 393   ((long (*) (bfd *, arelent **, asymbol **)) _bfd_n1)
 394 \f
 395 /* Generic routine to determine of the given symbol is a local
 396    label.  */
 397 extern bfd_boolean bfd_generic_is_local_label_name
 398   (bfd *, const char *);
 399
 400 /* Generic minisymbol routines.  */
 401 extern long _bfd_generic_read_minisymbols
 402   (bfd *, bfd_boolean, void **, unsigned int *);
 403 extern asymbol *_bfd_generic_minisymbol_to_symbol
 404   (bfd *, bfd_boolean, const void *, asymbol *);
 405
 406 /* Find the nearest line using .stab/.stabstr sections.  */
 407 extern bfd_boolean _bfd_stab_section_find_nearest_line
 408   (bfd *, asymbol **, asection *, bfd_vma, bfd_boolean *,
 409    const char **, const char **, unsigned int *, void **);
 410
 411 /* Find the neaderst line using DWARF 1 debugging information.  */
 412 extern bfd_boolean _bfd_dwarf1_find_nearest_line
 413   (bfd *, asection *, asymbol **, bfd_vma, const char **,
 414    const char **, unsigned int *);
 415
 416 /* Find the nearest line using DWARF 2 debugging information.  */
 417 extern bfd_boolean _bfd_dwarf2_find_nearest_line
 418   (bfd *, asection *, asymbol **, bfd_vma, const char **, const char **,
 419    unsigned int *, unsigned int, void **);
 420
 421 /* Create a new section entry.  */
 422 extern struct bfd_hash_entry *bfd_section_hash_newfunc
 423   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 424
 425 /* A routine to create entries for a bfd_link_hash_table.  */
 426 extern struct bfd_hash_entry *_bfd_link_hash_newfunc
 427   (struct bfd_hash_entry *entry, struct bfd_hash_table *table,
 428    const char *string);
 429
 430 /* Initialize a bfd_link_hash_table.  */
 431 extern bfd_boolean _bfd_link_hash_table_init
 432   (struct bfd_link_hash_table *, bfd *,
 433    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 434                                struct bfd_hash_table *,
 435                                const char *));
 436
 437 /* Generic link hash table creation routine.  */
 438 extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
 439   (bfd *);
 440
 441 /* Generic link hash table destruction routine.  */
 442 extern void _bfd_generic_link_hash_table_free
 443   (struct bfd_link_hash_table *);
 444
 445 /* Generic add symbol routine.  */
 446 extern bfd_boolean _bfd_generic_link_add_symbols
 447   (bfd *, struct bfd_link_info *);
 448
 449 /* Generic add symbol routine.  This version is used by targets for
 450    which the linker must collect constructors and destructors by name,
 451    as the collect2 program does.  */
 452 extern bfd_boolean _bfd_generic_link_add_symbols_collect
 453   (bfd *, struct bfd_link_info *);
 454
 455 /* Generic archive add symbol routine.  */
 456 extern bfd_boolean _bfd_generic_link_add_archive_symbols
 457   (bfd *, struct bfd_link_info *,
 458    bfd_boolean (*) (bfd *, struct bfd_link_info *, bfd_boolean *));
 459
 460 /* Forward declaration to avoid prototype errors.  */
 461 typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
 462
 463 /* Generic routine to add a single symbol.  */
 464 extern bfd_boolean _bfd_generic_link_add_one_symbol
 465   (struct bfd_link_info *, bfd *, const char *name, flagword,
 466    asection *, bfd_vma, const char *, bfd_boolean copy,
 467    bfd_boolean constructor, struct bfd_link_hash_entry **);
 468
 469 /* Generic routine to mark section as supplying symbols only.  */
 470 extern void _bfd_generic_link_just_syms
 471   (asection *, struct bfd_link_info *);
 472
 473 /* Generic link routine.  */
 474 extern bfd_boolean _bfd_generic_final_link
 475   (bfd *, struct bfd_link_info *);
 476
 477 extern bfd_boolean _bfd_generic_link_split_section
 478   (bfd *, struct bfd_section *);
 479
 480 extern void _bfd_generic_section_already_linked
 481   (bfd *, struct bfd_section *);
 482
 483 /* Generic reloc_link_order processing routine.  */
 484 extern bfd_boolean _bfd_generic_reloc_link_order
 485   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
 486
 487 /* Default link order processing routine.  */
 488 extern bfd_boolean _bfd_default_link_order
 489   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
 490
 491 /* Count the number of reloc entries in a link order list.  */
 492 extern unsigned int _bfd_count_link_order_relocs
 493   (struct bfd_link_order *);
 494
 495 /* Final link relocation routine.  */
 496 extern bfd_reloc_status_type _bfd_final_link_relocate
 497   (reloc_howto_type *, bfd *, asection *, bfd_byte *,
 498    bfd_vma, bfd_vma, bfd_vma);
 499
 500 /* Relocate a particular location by a howto and a value.  */
 501 extern bfd_reloc_status_type _bfd_relocate_contents
 502   (reloc_howto_type *, bfd *, bfd_vma, bfd_byte *);
 503
 504 /* Link stabs in sections in the first pass.  */
 505
 506 extern bfd_boolean _bfd_link_section_stabs
 507   (bfd *, struct stab_info *, asection *, asection *, void **,
 508    bfd_size_type *);
 509
 510 /* Eliminate stabs for discarded functions and symbols.  */
 511 extern bfd_boolean _bfd_discard_section_stabs
 512   (bfd *, asection *, void *, bfd_boolean (*) (bfd_vma, void *), void *);
 513
 514 /* Write out the .stab section when linking stabs in sections.  */
 515
 516 extern bfd_boolean _bfd_write_section_stabs
 517   (bfd *, struct stab_info *, asection *, void **, bfd_byte *);
 518
 519 /* Write out the .stabstr string table when linking stabs in sections.  */
 520
 521 extern bfd_boolean _bfd_write_stab_strings
 522   (bfd *, struct stab_info *);
 523
 524 /* Find an offset within a .stab section when linking stabs in
 525    sections.  */
 526
 527 extern bfd_vma _bfd_stab_section_offset
 528   (asection *, void *, bfd_vma);
 529
 530 /* Register a SEC_MERGE section as a candidate for merging.  */
 531
 532 extern bfd_boolean _bfd_add_merge_section
 533   (bfd *, void **, asection *, void **);
 534
 535 /* Attempt to merge SEC_MERGE sections.  */
 536
 537 extern bfd_boolean _bfd_merge_sections
 538   (bfd *, struct bfd_link_info *, void *, void (*) (bfd *, asection *));
 539
 540 /* Write out a merged section.  */
 541
 542 extern bfd_boolean _bfd_write_merged_section
 543   (bfd *, asection *, void *);
 544
 545 /* Find an offset within a modified SEC_MERGE section.  */
 546
 547 extern bfd_vma _bfd_merged_section_offset
 548   (bfd *, asection **, void *, bfd_vma);
 549
 550 /* Create a string table.  */
 551 extern struct bfd_strtab_hash *_bfd_stringtab_init
 552   (void);
 553
 554 /* Create an XCOFF .debug section style string table.  */
 555 extern struct bfd_strtab_hash *_bfd_xcoff_stringtab_init
 556   (void);
 557
 558 /* Free a string table.  */
 559 extern void _bfd_stringtab_free
 560   (struct bfd_strtab_hash *);
 561
 562 /* Get the size of a string table.  */
 563 extern bfd_size_type _bfd_stringtab_size
 564   (struct bfd_strtab_hash *);
 565
 566 /* Add a string to a string table.  */
 567 extern bfd_size_type _bfd_stringtab_add
 568   (struct bfd_strtab_hash *, const char *, bfd_boolean hash, bfd_boolean copy);
 569
 570 /* Write out a string table.  */
 571 extern bfd_boolean _bfd_stringtab_emit
 572   (bfd *, struct bfd_strtab_hash *);
 573
 574 /* Check that endianness of input and output file match.  */
 575 extern bfd_boolean _bfd_generic_verify_endian_match
 576   (bfd *, bfd *);
 577 \f
 578 /* Macros to tell if bfds are read or write enabled.
 579
 580    Note that bfds open for read may be scribbled into if the fd passed
 581    to bfd_fdopenr is actually open both for read and write
 582    simultaneously.  However an output bfd will never be open for
 583    read.  Therefore sometimes you want to check bfd_read_p or
 584    !bfd_read_p, and only sometimes bfd_write_p.
 585 */
 586
 587 #define bfd_read_p(abfd) \
 588   ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
 589 #define bfd_write_p(abfd) \
 590   ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
 591
 592 void bfd_assert
 593   (const char*,int);
 594
 595 #define BFD_ASSERT(x) \
 596   { if (!(x)) bfd_assert(__FILE__,__LINE__); }
 597
 598 #define BFD_FAIL() \
 599   { bfd_assert(__FILE__,__LINE__); }
 600
 601 extern void _bfd_abort
 602   (const char *, int, const char *) ATTRIBUTE_NORETURN;
 603
 604 /* if gcc >= 2.6, we can give a function name, too */
 605 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
 606 #define __PRETTY_FUNCTION__  ((char *) NULL)
 607 #endif
 608
 609 #undef abort
 610 #define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
 611
 612 /* Manipulate a system FILE but using BFD's "file_ptr", rather than
 613    the system "off_t" or "off64_t", as the offset.  */
 614 extern file_ptr real_ftell (FILE *file);
 615 extern int real_fseek (FILE *file, file_ptr offset, int whence);
 616
 617 FILE *  bfd_cache_lookup_worker
 618   (bfd *);
 619
 620 extern bfd *bfd_last_cache;
 621
 622 /* List of supported target vectors, and the default vector (if
 623    bfd_default_vector[0] is NULL, there is no default).  */
 624 extern const bfd_target * const *bfd_target_vector;
 625 extern const bfd_target *bfd_default_vector[];
 626
 627 /* List of associated target vectors.  */
 628 extern const bfd_target * const *bfd_associated_vector;
 629
 630 /* Functions shared by the ECOFF and MIPS ELF backends, which have no
 631    other common header files.  */
 632
 633 #if defined(__STDC__) || defined(ALMOST_STDC)
 634 struct ecoff_find_line;
 635 #endif
 636
 637 extern bfd_boolean _bfd_ecoff_locate_line
 638   (bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
 639    const struct ecoff_debug_swap * const, struct ecoff_find_line *,
 640    const char **, const char **, unsigned int *);
 641 extern bfd_boolean _bfd_ecoff_get_accumulated_pdr
 642   (void *, bfd_byte *);
 643 extern bfd_boolean _bfd_ecoff_get_accumulated_sym
 644   (void *, bfd_byte *);
 645 extern bfd_boolean _bfd_ecoff_get_accumulated_ss
 646   (void *, bfd_byte *);
 647
 648 extern bfd_vma _bfd_get_gp_value
 649   (bfd *);
 650 extern void _bfd_set_gp_value
 651   (bfd *, bfd_vma);
 652
 653 /* Function shared by the COFF and ELF SH backends, which have no
 654    other common header files.  */
 655
 656 #ifndef _bfd_sh_align_load_span
 657 extern bfd_boolean _bfd_sh_align_load_span
 658   (bfd *, asection *, bfd_byte *,
 659    bfd_boolean (*) (bfd *, asection *, void *, bfd_byte *, bfd_vma),
 660    void *, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, bfd_boolean *);
 661 #endif
 662
 663 /* This is the shape of the elements inside the already_linked hash
 664    table. It maps a name onto a list of already_linked elements with
 665    the same name.  */
 666
 667 struct bfd_section_already_linked_hash_entry
 668 {
 669   struct bfd_hash_entry root;
 670   struct bfd_section_already_linked *entry;
 671 };
 672
 673 struct bfd_section_already_linked
 674 {
 675   struct bfd_section_already_linked *next;
 676   asection *sec;
 677 };
 678
 679 extern struct bfd_section_already_linked_hash_entry *
 680   bfd_section_already_linked_table_lookup (const char *);
 681 extern void bfd_section_already_linked_table_insert
 682   (struct bfd_section_already_linked_hash_entry *, asection *);
 683 extern void bfd_section_already_linked_table_traverse
 684   (bfd_boolean (*) (struct bfd_section_already_linked_hash_entry *,
 685                     void *), void *);
 686