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 (C) 1990-2020 Free Software Foundation, Inc.
   5
   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 3 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., 51 Franklin Street - Fifth Floor, Boston,
  23    MA 02110-1301, USA.  */
  24
  25 #ifndef _LIBBFD_H
  26 #define _LIBBFD_H 1
  27
  28 #ifndef ATTRIBUTE_HIDDEN
  29 #if HAVE_HIDDEN
  30 #define ATTRIBUTE_HIDDEN __attribute__ ((__visibility__ ("hidden")))
  31 #else
  32 #define ATTRIBUTE_HIDDEN
  33 #endif
  34 #endif
  35
  36 #include "hashtab.h"
  37
  38 #ifdef __cplusplus
  39 extern "C" {
  40 #endif
  41
  42 /* If you want to read and write large blocks, you might want to do it
  43    in quanta of this amount */
  44 #define DEFAULT_BUFFERSIZE 8192
  45
  46 /* Set a tdata field.  Can't use the other macros for this, since they
  47    do casts, and casting to the left of assignment isn't portable.  */
  48 #define set_tdata(bfd, v) ((bfd)->tdata.any = (v))
  49
  50 /* If BFD_IN_MEMORY is set for a BFD, then the iostream fields points
  51    to an instance of this structure.  */
  52
  53 struct bfd_in_memory
  54 {
  55   /* Size of buffer.  */
  56   bfd_size_type size;
  57   /* Buffer holding contents of BFD.  */
  58   bfd_byte *buffer;
  59 };
  60
  61 struct section_hash_entry
  62 {
  63   struct bfd_hash_entry root;
  64   asection section;
  65 };
  66
  67 /* Unique section id.  */
  68 extern unsigned int _bfd_section_id ATTRIBUTE_HIDDEN;
  69
  70 /* tdata for an archive.  For an input archive, cache
  71    needs to be free()'d.  For an output archive, symdefs do.  */
  72
  73 struct artdata
  74 {
  75   file_ptr first_file_filepos;
  76   /* Speed up searching the armap */
  77   htab_t cache;
  78   bfd *archive_head;            /* Only interesting in output routines.  */
  79   carsym *symdefs;              /* The symdef entries.  */
  80   symindex symdef_count;        /* How many there are.  */
  81   char *extended_names;         /* Clever intel extension.  */
  82   bfd_size_type extended_names_size; /* Size of extended names.  */
  83   /* When more compilers are standard C, this can be a time_t.  */
  84   long  armap_timestamp;        /* Timestamp value written into armap.
  85                                    This is used for BSD archives to check
  86                                    that the timestamp is recent enough
  87                                    for the BSD linker to not complain,
  88                                    just before we finish writing an
  89                                    archive.  */
  90   file_ptr armap_datepos;       /* Position within archive to seek to
  91                                    rewrite the date field.  */
  92   void *tdata;                  /* Backend specific information.  */
  93 };
  94
  95 #define bfd_ardata(bfd) ((bfd)->tdata.aout_ar_data)
  96
  97 /* Goes in bfd's arelt_data slot */
  98 struct areltdata
  99 {
 100   char * arch_header;           /* It's actually a string.  */
 101   bfd_size_type parsed_size;    /* Octets of filesize not including ar_hdr.  */
 102   bfd_size_type extra_size;     /* BSD4.4: extra bytes after the header.  */
 103   char *filename;               /* Null-terminated.  */
 104   file_ptr origin;              /* For element of a thin archive.  */
 105   void *parent_cache;           /* Where and how to find this member.  */
 106   file_ptr key;
 107 };
 108
 109 #define arelt_size(bfd) (((struct areltdata *)((bfd)->arelt_data))->parsed_size)
 110
 111 extern void *bfd_malloc
 112   (bfd_size_type) ATTRIBUTE_HIDDEN;
 113 extern void *bfd_realloc
 114   (void *, bfd_size_type) ATTRIBUTE_HIDDEN;
 115 extern void *bfd_realloc_or_free
 116   (void *, bfd_size_type) ATTRIBUTE_HIDDEN;
 117 extern void *bfd_zmalloc
 118   (bfd_size_type) ATTRIBUTE_HIDDEN;
 119
 120 static inline char *
 121 bfd_strdup (const char *str)
 122 {
 123   size_t len = strlen (str) + 1;
 124   char *buf = bfd_malloc (len);
 125   if (buf != NULL)
 126     memcpy (buf, str, len);
 127   return buf;
 128 }
 129 /* These routines allocate and free things on the BFD's objalloc.  */
 130
 131 extern void bfd_release
 132   (bfd *, void *) ATTRIBUTE_HIDDEN;
 133
 134 extern bfd * _bfd_create_empty_archive_element_shell
 135   (bfd *) ATTRIBUTE_HIDDEN;
 136 extern bfd * _bfd_look_for_bfd_in_cache
 137   (bfd *, file_ptr) ATTRIBUTE_HIDDEN;
 138 extern bfd_boolean _bfd_add_bfd_to_archive_cache
 139   (bfd *, file_ptr, bfd *) ATTRIBUTE_HIDDEN;
 140 extern bfd_boolean _bfd_generic_mkarchive
 141   (bfd *) ATTRIBUTE_HIDDEN;
 142 extern char *_bfd_append_relative_path
 143   (bfd *, char *) ATTRIBUTE_HIDDEN;
 144 extern const bfd_target *bfd_generic_archive_p
 145   (bfd *) ATTRIBUTE_HIDDEN;
 146 extern bfd_boolean bfd_slurp_armap
 147   (bfd *) ATTRIBUTE_HIDDEN;
 148 #define bfd_slurp_bsd_armap bfd_slurp_armap
 149 #define bfd_slurp_coff_armap bfd_slurp_armap
 150 extern bfd_boolean _bfd_archive_64_bit_slurp_armap
 151   (bfd *) ATTRIBUTE_HIDDEN;
 152 extern bfd_boolean _bfd_archive_64_bit_write_armap
 153   (bfd *, unsigned int, struct orl *, unsigned int, int) ATTRIBUTE_HIDDEN;
 154 #define _bfd_archive_64_bit_slurp_extended_name_table \
 155   _bfd_slurp_extended_name_table
 156 #define _bfd_archive_64_bit_construct_extended_name_table \
 157   _bfd_archive_coff_construct_extended_name_table
 158 #define _bfd_archive_64_bit_truncate_arname \
 159   bfd_dont_truncate_arname
 160 #define _bfd_archive_64_bit_read_ar_hdr \
 161   _bfd_generic_read_ar_hdr
 162 #define _bfd_archive_64_bit_write_ar_hdr \
 163   _bfd_generic_write_ar_hdr
 164 #define _bfd_archive_64_bit_openr_next_archived_file \
 165   bfd_generic_openr_next_archived_file
 166 #define _bfd_archive_64_bit_get_elt_at_index \
 167   _bfd_generic_get_elt_at_index
 168 #define _bfd_archive_64_bit_generic_stat_arch_elt \
 169   bfd_generic_stat_arch_elt
 170 #define _bfd_archive_64_bit_update_armap_timestamp _bfd_bool_bfd_true
 171
 172 extern bfd_boolean _bfd_slurp_extended_name_table
 173   (bfd *) ATTRIBUTE_HIDDEN;
 174 extern bfd_boolean _bfd_construct_extended_name_table
 175   (bfd *, bfd_boolean, char **, bfd_size_type *) ATTRIBUTE_HIDDEN;
 176 extern bfd_boolean _bfd_write_archive_contents
 177   (bfd *) ATTRIBUTE_HIDDEN;
 178 extern bfd_boolean _bfd_compute_and_write_armap
 179   (bfd *, unsigned int) ATTRIBUTE_HIDDEN;
 180 extern bfd *_bfd_get_elt_at_filepos
 181   (bfd *, file_ptr) ATTRIBUTE_HIDDEN;
 182 extern bfd *_bfd_generic_get_elt_at_index
 183   (bfd *, symindex) ATTRIBUTE_HIDDEN;
 184 extern bfd * _bfd_new_bfd
 185   (void) ATTRIBUTE_HIDDEN;
 186 extern bfd_boolean _bfd_free_cached_info
 187   (bfd *) ATTRIBUTE_HIDDEN;
 188
 189 extern bfd_boolean _bfd_bool_bfd_false
 190   (bfd *) ATTRIBUTE_HIDDEN;
 191 extern bfd_boolean _bfd_bool_bfd_asymbol_false
 192   (bfd *, asymbol *) ATTRIBUTE_HIDDEN;
 193 extern bfd_boolean _bfd_bool_bfd_false_error
 194   (bfd *) ATTRIBUTE_HIDDEN;
 195 extern bfd_boolean _bfd_bool_bfd_link_false_error
 196   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 197 extern bfd_boolean _bfd_bool_bfd_true
 198   (bfd *) ATTRIBUTE_HIDDEN;
 199 extern bfd_boolean _bfd_bool_bfd_link_true
 200   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 201 extern bfd_boolean _bfd_bool_bfd_bfd_true
 202   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 203 extern bfd_boolean _bfd_bool_bfd_uint_true
 204   (bfd *, unsigned int) ATTRIBUTE_HIDDEN;
 205 extern bfd_boolean _bfd_bool_bfd_asection_bfd_asection_true
 206   (bfd *, asection *, bfd *, asection *) ATTRIBUTE_HIDDEN;
 207 extern bfd_boolean _bfd_bool_bfd_asymbol_bfd_asymbol_true
 208   (bfd *, asymbol *, bfd *, asymbol *) ATTRIBUTE_HIDDEN;
 209 extern bfd_boolean _bfd_bool_bfd_ptr_true
 210   (bfd *, void *) ATTRIBUTE_HIDDEN;
 211 extern void *_bfd_ptr_bfd_null_error
 212   (bfd *) ATTRIBUTE_HIDDEN;
 213 extern int _bfd_int_bfd_0
 214   (bfd *) ATTRIBUTE_HIDDEN;
 215 extern unsigned int _bfd_uint_bfd_0
 216   (bfd *) ATTRIBUTE_HIDDEN;
 217 extern long _bfd_long_bfd_0
 218   (bfd *) ATTRIBUTE_HIDDEN;
 219 extern long _bfd_long_bfd_n1_error
 220   (bfd *) ATTRIBUTE_HIDDEN;
 221 extern void _bfd_void_bfd
 222   (bfd *) ATTRIBUTE_HIDDEN;
 223 extern void _bfd_void_bfd_link
 224   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 225 extern void _bfd_void_bfd_asection
 226   (bfd *, asection *) ATTRIBUTE_HIDDEN;
 227
 228 extern bfd *_bfd_new_bfd_contained_in
 229   (bfd *) ATTRIBUTE_HIDDEN;
 230 extern const bfd_target *_bfd_dummy_target
 231   (bfd *) ATTRIBUTE_HIDDEN;
 232
 233 extern void bfd_dont_truncate_arname
 234   (bfd *, const char *, char *) ATTRIBUTE_HIDDEN;
 235 extern void bfd_bsd_truncate_arname
 236   (bfd *, const char *, char *) ATTRIBUTE_HIDDEN;
 237 extern void bfd_gnu_truncate_arname
 238   (bfd *, const char *, char *) ATTRIBUTE_HIDDEN;
 239
 240 extern bfd_boolean _bfd_bsd_write_armap
 241   (bfd *, unsigned int, struct orl *, unsigned int, int) ATTRIBUTE_HIDDEN;
 242
 243 extern bfd_boolean _bfd_coff_write_armap
 244   (bfd *, unsigned int, struct orl *, unsigned int, int) ATTRIBUTE_HIDDEN;
 245
 246 extern void *_bfd_generic_read_ar_hdr
 247   (bfd *) ATTRIBUTE_HIDDEN;
 248 extern void _bfd_ar_spacepad
 249   (char *, size_t, const char *, long) ATTRIBUTE_HIDDEN;
 250 extern bfd_boolean _bfd_ar_sizepad
 251   (char *, size_t, bfd_size_type) ATTRIBUTE_HIDDEN;
 252
 253 extern void *_bfd_generic_read_ar_hdr_mag
 254   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 255
 256 extern bfd_boolean _bfd_generic_write_ar_hdr
 257   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 258
 259 extern bfd_boolean _bfd_bsd44_write_ar_hdr
 260   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 261
 262 extern bfd * bfd_generic_openr_next_archived_file
 263   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 264
 265 extern int bfd_generic_stat_arch_elt
 266   (bfd *, struct stat *) ATTRIBUTE_HIDDEN;
 267
 268 #define _bfd_read_ar_hdr(abfd) \
 269         BFD_SEND (abfd, _bfd_read_ar_hdr_fn, (abfd))
 270 #define _bfd_write_ar_hdr(archive, abfd)         \
 271         BFD_SEND (abfd, _bfd_write_ar_hdr_fn, (archive, abfd))
 272 \f
 273 /* Generic routines to use for BFD_JUMP_TABLE_GENERIC.  Use
 274    BFD_JUMP_TABLE_GENERIC (_bfd_generic).  */
 275
 276 #define _bfd_generic_close_and_cleanup _bfd_archive_close_and_cleanup
 277 extern bfd_boolean _bfd_archive_close_and_cleanup
 278   (bfd *) ATTRIBUTE_HIDDEN;
 279 extern void _bfd_unlink_from_archive_parent (bfd *) ATTRIBUTE_HIDDEN;
 280 #define _bfd_generic_bfd_free_cached_info _bfd_bool_bfd_true
 281 extern bfd_boolean _bfd_generic_new_section_hook
 282   (bfd *, asection *) ATTRIBUTE_HIDDEN;
 283 extern bfd_boolean _bfd_generic_get_section_contents
 284   (bfd *, asection *, void *, file_ptr, bfd_size_type) ATTRIBUTE_HIDDEN;
 285 extern bfd_boolean _bfd_generic_get_section_contents_in_window
 286   (bfd *, asection *, bfd_window *, file_ptr, bfd_size_type) ATTRIBUTE_HIDDEN;
 287
 288 /* Generic routines to use for BFD_JUMP_TABLE_COPY.  Use
 289    BFD_JUMP_TABLE_COPY (_bfd_generic).  */
 290
 291 #define _bfd_generic_bfd_copy_private_bfd_data _bfd_bool_bfd_bfd_true
 292 #define _bfd_generic_bfd_merge_private_bfd_data \
 293   _bfd_bool_bfd_link_true
 294 #define _bfd_generic_bfd_set_private_flags _bfd_bool_bfd_uint_true
 295 #define _bfd_generic_bfd_copy_private_section_data \
 296   _bfd_bool_bfd_asection_bfd_asection_true
 297 #define _bfd_generic_bfd_copy_private_symbol_data \
 298   _bfd_bool_bfd_asymbol_bfd_asymbol_true
 299 #define _bfd_generic_bfd_copy_private_header_data _bfd_bool_bfd_bfd_true
 300 #define _bfd_generic_bfd_print_private_bfd_data _bfd_bool_bfd_ptr_true
 301
 302 extern bfd_boolean _bfd_generic_init_private_section_data
 303   (bfd *, asection *, bfd *, asection *, struct bfd_link_info *)
 304   ATTRIBUTE_HIDDEN;
 305
 306 /* Routines to use for BFD_JUMP_TABLE_CORE when there is no core file
 307    support.  Use BFD_JUMP_TABLE_CORE (_bfd_nocore).  */
 308
 309 extern char *_bfd_nocore_core_file_failing_command
 310   (bfd *) ATTRIBUTE_HIDDEN;
 311 extern int _bfd_nocore_core_file_failing_signal
 312   (bfd *) ATTRIBUTE_HIDDEN;
 313 extern bfd_boolean _bfd_nocore_core_file_matches_executable_p
 314   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 315 extern int _bfd_nocore_core_file_pid
 316   (bfd *) ATTRIBUTE_HIDDEN;
 317
 318 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE when there is no archive
 319    file support.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive).  */
 320
 321 #define _bfd_noarchive_slurp_armap _bfd_bool_bfd_false_error
 322 #define _bfd_noarchive_slurp_extended_name_table _bfd_bool_bfd_false_error
 323 extern bfd_boolean _bfd_noarchive_construct_extended_name_table
 324   (bfd *, char **, bfd_size_type *, const char **) ATTRIBUTE_HIDDEN;
 325 extern void _bfd_noarchive_truncate_arname
 326   (bfd *, const char *, char *) ATTRIBUTE_HIDDEN;
 327 extern bfd_boolean _bfd_noarchive_write_armap
 328   (bfd *, unsigned int, struct orl *, unsigned int, int) ATTRIBUTE_HIDDEN;
 329 #define _bfd_noarchive_read_ar_hdr _bfd_ptr_bfd_null_error
 330 extern bfd_boolean _bfd_noarchive_write_ar_hdr
 331   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 332 extern bfd *
 333 _bfd_noarchive_openr_next_archived_file
 334   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 335 extern bfd * _bfd_noarchive_get_elt_at_index
 336   (bfd *, symindex) ATTRIBUTE_HIDDEN;
 337 #define _bfd_noarchive_generic_stat_arch_elt bfd_generic_stat_arch_elt
 338 #define _bfd_noarchive_update_armap_timestamp _bfd_bool_bfd_false_error
 339
 340 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD style
 341    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd).  */
 342
 343 #define _bfd_archive_bsd_slurp_armap bfd_slurp_bsd_armap
 344 #define _bfd_archive_bsd_slurp_extended_name_table \
 345   _bfd_slurp_extended_name_table
 346 extern bfd_boolean _bfd_archive_bsd_construct_extended_name_table
 347   (bfd *, char **, bfd_size_type *, const char **) ATTRIBUTE_HIDDEN;
 348 #define _bfd_archive_bsd_truncate_arname bfd_bsd_truncate_arname
 349 #define _bfd_archive_bsd_write_armap _bfd_bsd_write_armap
 350 #define _bfd_archive_bsd_read_ar_hdr _bfd_generic_read_ar_hdr
 351 #define _bfd_archive_bsd_write_ar_hdr _bfd_generic_write_ar_hdr
 352 #define _bfd_archive_bsd_openr_next_archived_file \
 353   bfd_generic_openr_next_archived_file
 354 #define _bfd_archive_bsd_get_elt_at_index _bfd_generic_get_elt_at_index
 355 #define _bfd_archive_bsd_generic_stat_arch_elt \
 356   bfd_generic_stat_arch_elt
 357 extern bfd_boolean _bfd_archive_bsd_update_armap_timestamp
 358   (bfd *) ATTRIBUTE_HIDDEN;
 359
 360 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get COFF style
 361    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff).  */
 362
 363 #define _bfd_archive_coff_slurp_armap bfd_slurp_coff_armap
 364 #define _bfd_archive_coff_slurp_extended_name_table \
 365   _bfd_slurp_extended_name_table
 366 extern bfd_boolean _bfd_archive_coff_construct_extended_name_table
 367   (bfd *, char **, bfd_size_type *, const char **) ATTRIBUTE_HIDDEN;
 368 #define _bfd_archive_coff_truncate_arname bfd_dont_truncate_arname
 369 #define _bfd_archive_coff_write_armap _bfd_coff_write_armap
 370 #define _bfd_archive_coff_read_ar_hdr _bfd_generic_read_ar_hdr
 371 #define _bfd_archive_coff_write_ar_hdr _bfd_generic_write_ar_hdr
 372 #define _bfd_archive_coff_openr_next_archived_file \
 373   bfd_generic_openr_next_archived_file
 374 #define _bfd_archive_coff_get_elt_at_index _bfd_generic_get_elt_at_index
 375 #define _bfd_archive_coff_generic_stat_arch_elt \
 376   bfd_generic_stat_arch_elt
 377 #define _bfd_archive_coff_update_armap_timestamp _bfd_bool_bfd_true
 378
 379 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD4.4 style
 380    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd44).  */
 381
 382 #define _bfd_archive_bsd44_slurp_armap bfd_slurp_bsd_armap
 383 #define _bfd_archive_bsd44_slurp_extended_name_table \
 384   _bfd_slurp_extended_name_table
 385 extern bfd_boolean _bfd_archive_bsd44_construct_extended_name_table
 386   (bfd *, char **, bfd_size_type *, const char **) ATTRIBUTE_HIDDEN;
 387 #define _bfd_archive_bsd44_truncate_arname bfd_bsd_truncate_arname
 388 #define _bfd_archive_bsd44_write_armap _bfd_bsd_write_armap
 389 #define _bfd_archive_bsd44_read_ar_hdr _bfd_generic_read_ar_hdr
 390 #define _bfd_archive_bsd44_write_ar_hdr _bfd_bsd44_write_ar_hdr
 391 #define _bfd_archive_bsd44_openr_next_archived_file \
 392   bfd_generic_openr_next_archived_file
 393 #define _bfd_archive_bsd44_get_elt_at_index _bfd_generic_get_elt_at_index
 394 #define _bfd_archive_bsd44_generic_stat_arch_elt \
 395   bfd_generic_stat_arch_elt
 396 #define _bfd_archive_bsd44_update_armap_timestamp \
 397   _bfd_archive_bsd_update_armap_timestamp
 398
 399 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get VMS style
 400    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_vms_lib).  Some of them
 401    are irrelevant.  */
 402
 403 extern bfd_boolean _bfd_vms_lib_write_archive_contents
 404   (bfd *) ATTRIBUTE_HIDDEN;
 405 #define _bfd_vms_lib_slurp_armap _bfd_noarchive_slurp_armap
 406 #define _bfd_vms_lib_slurp_extended_name_table \
 407   _bfd_noarchive_slurp_extended_name_table
 408 #define _bfd_vms_lib_construct_extended_name_table \
 409   _bfd_noarchive_construct_extended_name_table
 410 #define _bfd_vms_lib_truncate_arname _bfd_noarchive_truncate_arname
 411 #define _bfd_vms_lib_write_armap _bfd_noarchive_write_armap
 412 #define _bfd_vms_lib_read_ar_hdr _bfd_noarchive_read_ar_hdr
 413 #define _bfd_vms_lib_write_ar_hdr _bfd_noarchive_write_ar_hdr
 414 extern bfd *_bfd_vms_lib_openr_next_archived_file
 415   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 416 extern bfd *_bfd_vms_lib_get_elt_at_index
 417   (bfd *, symindex) ATTRIBUTE_HIDDEN;
 418 extern int _bfd_vms_lib_generic_stat_arch_elt
 419   (bfd *, struct stat *) ATTRIBUTE_HIDDEN;
 420 #define _bfd_vms_lib_update_armap_timestamp _bfd_bool_bfd_true
 421
 422 /* Extra routines for VMS style archives.  */
 423
 424 extern symindex _bfd_vms_lib_find_symbol
 425   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 426 extern bfd *_bfd_vms_lib_get_imagelib_file
 427   (bfd *) ATTRIBUTE_HIDDEN;
 428 extern const bfd_target *_bfd_vms_lib_alpha_archive_p
 429   (bfd *) ATTRIBUTE_HIDDEN;
 430 extern const bfd_target *_bfd_vms_lib_ia64_archive_p
 431   (bfd *) ATTRIBUTE_HIDDEN;
 432 extern bfd_boolean _bfd_vms_lib_alpha_mkarchive
 433   (bfd *) ATTRIBUTE_HIDDEN;
 434 extern bfd_boolean _bfd_vms_lib_ia64_mkarchive
 435   (bfd *) ATTRIBUTE_HIDDEN;
 436
 437 /* Routines to use for BFD_JUMP_TABLE_SYMBOLS where there is no symbol
 438    support.  Use BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols).  */
 439
 440 #define _bfd_nosymbols_get_symtab_upper_bound _bfd_long_bfd_n1_error
 441 extern long _bfd_nosymbols_canonicalize_symtab
 442   (bfd *, asymbol **) ATTRIBUTE_HIDDEN;
 443 #define _bfd_nosymbols_make_empty_symbol _bfd_generic_make_empty_symbol
 444 extern void _bfd_nosymbols_print_symbol
 445   (bfd *, void *, asymbol *, bfd_print_symbol_type) ATTRIBUTE_HIDDEN;
 446 extern void _bfd_nosymbols_get_symbol_info
 447   (bfd *, asymbol *, symbol_info *) ATTRIBUTE_HIDDEN;
 448 extern const char * _bfd_nosymbols_get_symbol_version_string
 449   (bfd *, asymbol *, bfd_boolean *) ATTRIBUTE_HIDDEN;
 450 extern bfd_boolean _bfd_nosymbols_bfd_is_local_label_name
 451   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 452 #define _bfd_nosymbols_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
 453 extern alent *_bfd_nosymbols_get_lineno
 454   (bfd *, asymbol *) ATTRIBUTE_HIDDEN;
 455 extern bfd_boolean _bfd_nosymbols_find_nearest_line
 456   (bfd *, asymbol **, asection *, bfd_vma,
 457    const char **, const char **, unsigned int *, unsigned int *)
 458   ATTRIBUTE_HIDDEN;
 459 extern bfd_boolean _bfd_nosymbols_find_line
 460   (bfd *, asymbol **, asymbol *, const char **, unsigned int *)
 461   ATTRIBUTE_HIDDEN;
 462 extern bfd_boolean _bfd_nosymbols_find_inliner_info
 463   (bfd *, const char **, const char **, unsigned int *) ATTRIBUTE_HIDDEN;
 464 extern asymbol *_bfd_nosymbols_bfd_make_debug_symbol
 465   (bfd *, void *, unsigned long) ATTRIBUTE_HIDDEN;
 466 extern long _bfd_nosymbols_read_minisymbols
 467   (bfd *, bfd_boolean, void **, unsigned int *) ATTRIBUTE_HIDDEN;
 468 extern asymbol *_bfd_nosymbols_minisymbol_to_symbol
 469   (bfd *, bfd_boolean, const void *, asymbol *) ATTRIBUTE_HIDDEN;
 470
 471 /* Routines to use for BFD_JUMP_TABLE_RELOCS when there is no reloc
 472    support.  Use BFD_JUMP_TABLE_RELOCS (_bfd_norelocs).  */
 473
 474 extern long _bfd_norelocs_get_reloc_upper_bound
 475   (bfd *, asection *) ATTRIBUTE_HIDDEN;
 476 extern long _bfd_norelocs_canonicalize_reloc
 477   (bfd *, asection *, arelent **, asymbol **) ATTRIBUTE_HIDDEN;
 478 extern void _bfd_norelocs_set_reloc
 479   (bfd *, asection *, arelent **, unsigned int) ATTRIBUTE_HIDDEN;
 480 extern reloc_howto_type *_bfd_norelocs_bfd_reloc_type_lookup
 481   (bfd *, bfd_reloc_code_real_type) ATTRIBUTE_HIDDEN;
 482 extern reloc_howto_type *_bfd_norelocs_bfd_reloc_name_lookup
 483   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 484
 485 /* Routines to use for BFD_JUMP_TABLE_WRITE for targets which may not
 486    be written.  Use BFD_JUMP_TABLE_WRITE (_bfd_nowrite).  */
 487
 488 extern bfd_boolean _bfd_nowrite_set_arch_mach
 489   (bfd *, enum bfd_architecture, unsigned long) ATTRIBUTE_HIDDEN;
 490 extern bfd_boolean _bfd_nowrite_set_section_contents
 491   (bfd *, asection *, const void *, file_ptr, bfd_size_type) ATTRIBUTE_HIDDEN;
 492
 493 /* Generic routines to use for BFD_JUMP_TABLE_WRITE.  Use
 494    BFD_JUMP_TABLE_WRITE (_bfd_generic).  */
 495
 496 #define _bfd_generic_set_arch_mach bfd_default_set_arch_mach
 497 extern bfd_boolean _bfd_generic_set_section_contents
 498   (bfd *, asection *, const void *, file_ptr, bfd_size_type) ATTRIBUTE_HIDDEN;
 499
 500 /* Routines to use for BFD_JUMP_TABLE_LINK for targets which do not
 501    support linking.  Use BFD_JUMP_TABLE_LINK (_bfd_nolink).  */
 502
 503 extern int _bfd_nolink_sizeof_headers
 504   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 505 extern bfd_byte *_bfd_nolink_bfd_get_relocated_section_contents
 506   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 507    bfd_byte *, bfd_boolean, asymbol **) ATTRIBUTE_HIDDEN;
 508 extern bfd_boolean _bfd_nolink_bfd_relax_section
 509   (bfd *, asection *, struct bfd_link_info *, bfd_boolean *) ATTRIBUTE_HIDDEN;
 510 #define _bfd_nolink_bfd_gc_sections _bfd_bool_bfd_link_false_error
 511 extern bfd_boolean _bfd_nolink_bfd_lookup_section_flags
 512   (struct bfd_link_info *, struct flag_info *, asection *) ATTRIBUTE_HIDDEN;
 513 #define _bfd_nolink_bfd_merge_sections _bfd_bool_bfd_link_false_error
 514 extern bfd_boolean _bfd_nolink_bfd_is_group_section
 515   (bfd *, const asection *) ATTRIBUTE_HIDDEN;
 516 extern const char *_bfd_nolink_bfd_group_name
 517   (bfd *, const asection *) ATTRIBUTE_HIDDEN;
 518 extern bfd_boolean _bfd_nolink_bfd_discard_group
 519   (bfd *, asection *) ATTRIBUTE_HIDDEN;
 520 extern struct bfd_link_hash_table *_bfd_nolink_bfd_link_hash_table_create
 521   (bfd *) ATTRIBUTE_HIDDEN;
 522 #define _bfd_nolink_bfd_link_add_symbols _bfd_bool_bfd_link_false_error
 523 extern void _bfd_nolink_bfd_link_just_syms
 524   (asection *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 525 extern void _bfd_nolink_bfd_copy_link_hash_symbol_type
 526   (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *)
 527   ATTRIBUTE_HIDDEN;
 528 #define _bfd_nolink_bfd_final_link _bfd_bool_bfd_link_false_error
 529 extern bfd_boolean _bfd_nolink_bfd_link_split_section
 530   (bfd *, struct bfd_section *) ATTRIBUTE_HIDDEN;
 531 extern bfd_boolean _bfd_nolink_section_already_linked
 532   (bfd *, asection *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 533 extern bfd_boolean _bfd_nolink_bfd_define_common_symbol
 534   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *)
 535   ATTRIBUTE_HIDDEN;
 536 #define _bfd_nolink_bfd_link_hide_symbol \
 537   _bfd_generic_link_hide_symbol
 538 extern struct bfd_link_hash_entry *_bfd_nolink_bfd_define_start_stop
 539   (struct bfd_link_info *, const char *, asection *) ATTRIBUTE_HIDDEN;
 540 #define _bfd_nolink_bfd_link_check_relocs \
 541   _bfd_generic_link_check_relocs
 542
 543 /* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
 544    have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
 545    (_bfd_nodynamic).  */
 546
 547 #define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_long_bfd_n1_error
 548 #define _bfd_nodynamic_canonicalize_dynamic_symtab \
 549   _bfd_nosymbols_canonicalize_symtab
 550 extern long _bfd_nodynamic_get_synthetic_symtab
 551   (bfd *, long, asymbol **, long, asymbol **, asymbol **) ATTRIBUTE_HIDDEN;
 552 #define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_long_bfd_n1_error
 553 extern long _bfd_nodynamic_canonicalize_dynamic_reloc
 554   (bfd *, arelent **, asymbol **) ATTRIBUTE_HIDDEN;
 555 \f
 556 /* Generic routine to determine of the given symbol is a local
 557    label.  */
 558 extern bfd_boolean bfd_generic_is_local_label_name
 559   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 560
 561 /* Generic minisymbol routines.  */
 562 extern long _bfd_generic_read_minisymbols
 563   (bfd *, bfd_boolean, void **, unsigned int *) ATTRIBUTE_HIDDEN;
 564 extern asymbol *_bfd_generic_minisymbol_to_symbol
 565   (bfd *, bfd_boolean, const void *, asymbol *) ATTRIBUTE_HIDDEN;
 566
 567 /* Find the nearest line using .stab/.stabstr sections.  */
 568 extern bfd_boolean _bfd_stab_section_find_nearest_line
 569   (bfd *, asymbol **, asection *, bfd_vma, bfd_boolean *,
 570    const char **, const char **, unsigned int *, void **) ATTRIBUTE_HIDDEN;
 571
 572 /* Find the nearest line using DWARF 1 debugging information.  */
 573 extern bfd_boolean _bfd_dwarf1_find_nearest_line
 574   (bfd *, asymbol **, asection *, bfd_vma,
 575    const char **, const char **, unsigned int *) ATTRIBUTE_HIDDEN;
 576
 577 struct dwarf_debug_section
 578 {
 579   const char * uncompressed_name;
 580   const char * compressed_name;
 581 };
 582
 583 /* Map of uncompressed DWARF debug section name to compressed one.  It
 584    is terminated by NULL uncompressed_name.  */
 585
 586 extern const struct dwarf_debug_section dwarf_debug_sections[] ATTRIBUTE_HIDDEN;
 587
 588 /* Find the nearest line using DWARF 2 debugging information.  */
 589 extern int _bfd_dwarf2_find_nearest_line
 590   (bfd *, asymbol **, asymbol *, asection *, bfd_vma,
 591    const char **, const char **, unsigned int *, unsigned int *,
 592    const struct dwarf_debug_section *, void **) ATTRIBUTE_HIDDEN;
 593
 594 /* Find the bias between DWARF addresses and real addresses.  */
 595 extern bfd_signed_vma _bfd_dwarf2_find_symbol_bias
 596   (asymbol **, void **) ATTRIBUTE_HIDDEN;
 597
 598 /* Find inliner info after calling bfd_find_nearest_line. */
 599 extern bfd_boolean _bfd_dwarf2_find_inliner_info
 600   (bfd *, const char **, const char **, unsigned int *, void **)
 601   ATTRIBUTE_HIDDEN;
 602
 603 /* Read DWARF 2 debugging information. */
 604 extern bfd_boolean _bfd_dwarf2_slurp_debug_info
 605   (bfd *, bfd *, const struct dwarf_debug_section *, asymbol **, void **,
 606    bfd_boolean) ATTRIBUTE_HIDDEN;
 607
 608 /* Clean up the data used to handle DWARF 2 debugging information. */
 609 extern void _bfd_dwarf2_cleanup_debug_info
 610   (bfd *, void **) ATTRIBUTE_HIDDEN;
 611
 612 /* Create a new section entry.  */
 613 extern struct bfd_hash_entry *bfd_section_hash_newfunc
 614   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *)
 615   ATTRIBUTE_HIDDEN;
 616
 617 /* A routine to create entries for a bfd_link_hash_table.  */
 618 extern struct bfd_hash_entry *_bfd_link_hash_newfunc
 619   (struct bfd_hash_entry *entry, struct bfd_hash_table *table,
 620    const char *string) ATTRIBUTE_HIDDEN;
 621
 622 /* Initialize a bfd_link_hash_table.  */
 623 extern bfd_boolean _bfd_link_hash_table_init
 624   (struct bfd_link_hash_table *, bfd *,
 625    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 626                                struct bfd_hash_table *,
 627                                const char *),
 628    unsigned int) ATTRIBUTE_HIDDEN;
 629
 630 /* Generic link hash table creation routine.  */
 631 extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
 632   (bfd *) ATTRIBUTE_HIDDEN;
 633
 634 /* Generic link hash table destruction routine.  */
 635 extern void _bfd_generic_link_hash_table_free
 636   (bfd *) ATTRIBUTE_HIDDEN;
 637
 638 /* Generic add symbol routine.  */
 639 extern bfd_boolean _bfd_generic_link_add_symbols
 640   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 641
 642 /* Generic archive add symbol routine.  */
 643 extern bfd_boolean _bfd_generic_link_add_archive_symbols
 644   (bfd *, struct bfd_link_info *,
 645    bfd_boolean (*) (bfd *, struct bfd_link_info *,
 646                     struct bfd_link_hash_entry *, const char *,
 647                     bfd_boolean *)) ATTRIBUTE_HIDDEN;
 648
 649 /* Forward declaration to avoid prototype errors.  */
 650 typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
 651
 652 /* Generic routine to add a single symbol.  */
 653 extern bfd_boolean _bfd_generic_link_add_one_symbol
 654   (struct bfd_link_info *, bfd *, const char *name, flagword,
 655    asection *, bfd_vma, const char *, bfd_boolean copy,
 656    bfd_boolean constructor, struct bfd_link_hash_entry **) ATTRIBUTE_HIDDEN;
 657
 658 /* Generic routine to mark section as supplying symbols only.  */
 659 extern void _bfd_generic_link_just_syms
 660   (asection *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 661
 662 /* Generic routine that does nothing.  */
 663 extern void _bfd_generic_copy_link_hash_symbol_type
 664   (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *)
 665   ATTRIBUTE_HIDDEN;
 666
 667 /* Generic link routine.  */
 668 extern bfd_boolean _bfd_generic_final_link
 669   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 670
 671 extern bfd_boolean _bfd_generic_link_split_section
 672   (bfd *, struct bfd_section *) ATTRIBUTE_HIDDEN;
 673
 674 extern bfd_boolean _bfd_generic_section_already_linked
 675   (bfd *, asection *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 676
 677 /* Generic reloc_link_order processing routine.  */
 678 extern bfd_boolean _bfd_generic_reloc_link_order
 679   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *)
 680   ATTRIBUTE_HIDDEN;
 681
 682 /* Default link order processing routine.  */
 683 extern bfd_boolean _bfd_default_link_order
 684   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *)
 685   ATTRIBUTE_HIDDEN;
 686
 687 /* Count the number of reloc entries in a link order list.  */
 688 extern unsigned int _bfd_count_link_order_relocs
 689   (struct bfd_link_order *) ATTRIBUTE_HIDDEN;
 690
 691 /* Final link relocation routine.  */
 692 extern bfd_reloc_status_type _bfd_final_link_relocate
 693   (reloc_howto_type *, bfd *, asection *, bfd_byte *,
 694    bfd_vma, bfd_vma, bfd_vma) ATTRIBUTE_HIDDEN;
 695
 696 /* Relocate a particular location by a howto and a value.  */
 697 extern bfd_reloc_status_type _bfd_relocate_contents
 698   (reloc_howto_type *, bfd *, bfd_vma, bfd_byte *) ATTRIBUTE_HIDDEN;
 699
 700 /* Clear a given location using a given howto.  */
 701 extern bfd_reloc_status_type _bfd_clear_contents
 702   (reloc_howto_type *, bfd *, asection *, bfd_byte *, bfd_vma) ATTRIBUTE_HIDDEN;
 703
 704 /* Link stabs in sections in the first pass.  */
 705
 706 extern bfd_boolean _bfd_link_section_stabs
 707   (bfd *, struct stab_info *, asection *, asection *, void **,
 708    bfd_size_type *) ATTRIBUTE_HIDDEN;
 709
 710 /* Eliminate stabs for discarded functions and symbols.  */
 711 extern bfd_boolean _bfd_discard_section_stabs
 712   (bfd *, asection *, void *, bfd_boolean (*) (bfd_vma, void *), void *)
 713   ATTRIBUTE_HIDDEN;
 714
 715 /* Write out the .stab section when linking stabs in sections.  */
 716
 717 extern bfd_boolean _bfd_write_section_stabs
 718   (bfd *, struct stab_info *, asection *, void **, bfd_byte *)
 719   ATTRIBUTE_HIDDEN;
 720
 721 /* Write out the .stabstr string table when linking stabs in sections.  */
 722
 723 extern bfd_boolean _bfd_write_stab_strings
 724   (bfd *, struct stab_info *) ATTRIBUTE_HIDDEN;
 725
 726 /* Find an offset within a .stab section when linking stabs in
 727    sections.  */
 728
 729 extern bfd_vma _bfd_stab_section_offset
 730   (asection *, void *, bfd_vma) ATTRIBUTE_HIDDEN;
 731
 732 /* Register a SEC_MERGE section as a candidate for merging.  */
 733
 734 extern bfd_boolean _bfd_add_merge_section
 735   (bfd *, void **, asection *, void **) ATTRIBUTE_HIDDEN;
 736
 737 /* Attempt to merge SEC_MERGE sections.  */
 738
 739 extern bfd_boolean _bfd_merge_sections
 740   (bfd *, struct bfd_link_info *, void *, void (*) (bfd *, asection *))
 741   ATTRIBUTE_HIDDEN;
 742
 743 /* Write out a merged section.  */
 744
 745 extern bfd_boolean _bfd_write_merged_section
 746   (bfd *, asection *, void *) ATTRIBUTE_HIDDEN;
 747
 748 /* Find an offset within a modified SEC_MERGE section.  */
 749
 750 extern bfd_vma _bfd_merged_section_offset
 751   (bfd *, asection **, void *, bfd_vma) ATTRIBUTE_HIDDEN;
 752
 753 /* Tidy up when done.  */
 754
 755 extern void _bfd_merge_sections_free (void *) ATTRIBUTE_HIDDEN;
 756
 757 /* Create a string table.  */
 758 extern struct bfd_strtab_hash *_bfd_stringtab_init
 759   (void) ATTRIBUTE_HIDDEN;
 760
 761 /* Create an XCOFF .debug section style string table.  */
 762 extern struct bfd_strtab_hash *_bfd_xcoff_stringtab_init
 763   (void) ATTRIBUTE_HIDDEN;
 764
 765 /* Free a string table.  */
 766 extern void _bfd_stringtab_free
 767   (struct bfd_strtab_hash *) ATTRIBUTE_HIDDEN;
 768
 769 /* Get the size of a string table.  */
 770 extern bfd_size_type _bfd_stringtab_size
 771   (struct bfd_strtab_hash *) ATTRIBUTE_HIDDEN;
 772
 773 /* Add a string to a string table.  */
 774 extern bfd_size_type _bfd_stringtab_add
 775   (struct bfd_strtab_hash *, const char *, bfd_boolean hash, bfd_boolean copy)
 776   ATTRIBUTE_HIDDEN;
 777
 778 /* Write out a string table.  */
 779 extern bfd_boolean _bfd_stringtab_emit
 780   (bfd *, struct bfd_strtab_hash *) ATTRIBUTE_HIDDEN;
 781 \f
 782 /* Macros to tell if bfds are read or write enabled.
 783
 784    Note that bfds open for read may be scribbled into if the fd passed
 785    to bfd_fdopenr is actually open both for read and write
 786    simultaneously.  However an output bfd will never be open for
 787    read.  Therefore sometimes you want to check bfd_read_p or
 788    !bfd_read_p, and only sometimes bfd_write_p.
 789 */
 790
 791 #define bfd_read_p(abfd) \
 792   ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
 793 #define bfd_write_p(abfd) \
 794   ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
 795
 796 extern void bfd_assert
 797   (const char*,int) ATTRIBUTE_HIDDEN;
 798
 799 #define BFD_ASSERT(x) \
 800   do { if (!(x)) bfd_assert(__FILE__,__LINE__); } while (0)
 801
 802 #define BFD_FAIL() \
 803   do { bfd_assert(__FILE__,__LINE__); } while (0)
 804
 805 extern void _bfd_abort
 806   (const char *, int, const char *) ATTRIBUTE_NORETURN ATTRIBUTE_HIDDEN;
 807
 808 /* if gcc >= 2.6, we can give a function name, too */
 809 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
 810 #define __PRETTY_FUNCTION__  ((char *) NULL)
 811 #endif
 812
 813 #undef abort
 814 #define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
 815
 816 /* Manipulate a system FILE but using BFD's "file_ptr", rather than
 817    the system "off_t" or "off64_t", as the offset.  */
 818 extern file_ptr _bfd_real_ftell
 819   (FILE *) ATTRIBUTE_HIDDEN;
 820 extern int _bfd_real_fseek
 821   (FILE *, file_ptr, int) ATTRIBUTE_HIDDEN;
 822 extern FILE *_bfd_real_fopen
 823   (const char *, const char *) ATTRIBUTE_HIDDEN;
 824
 825 /* List of supported target vectors, and the default vector (if
 826    bfd_default_vector[0] is NULL, there is no default).  */
 827 extern const bfd_target * const *bfd_target_vector ATTRIBUTE_HIDDEN;
 828 extern const bfd_target *bfd_default_vector[] ATTRIBUTE_HIDDEN;
 829
 830 /* List of associated target vectors.  */
 831 extern const bfd_target * const *bfd_associated_vector ATTRIBUTE_HIDDEN;
 832
 833 /* Functions shared by the ECOFF and MIPS ELF backends, which have no
 834    other common header files.  */
 835
 836 #if defined(__STDC__) || defined(ALMOST_STDC)
 837 struct ecoff_find_line;
 838 #endif
 839
 840 extern bfd_boolean _bfd_ecoff_locate_line
 841   (bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
 842    const struct ecoff_debug_swap * const, struct ecoff_find_line *,
 843    const char **, const char **, unsigned int *) ATTRIBUTE_HIDDEN;
 844 extern bfd_boolean _bfd_ecoff_get_accumulated_pdr
 845   (void *, bfd_byte *) ATTRIBUTE_HIDDEN;
 846 extern bfd_boolean _bfd_ecoff_get_accumulated_sym
 847   (void *, bfd_byte *) ATTRIBUTE_HIDDEN;
 848 extern bfd_boolean _bfd_ecoff_get_accumulated_ss
 849   (void *, bfd_byte *) ATTRIBUTE_HIDDEN;
 850
 851 extern bfd_vma _bfd_get_gp_value
 852   (bfd *) ATTRIBUTE_HIDDEN;
 853 extern void _bfd_set_gp_value
 854   (bfd *, bfd_vma) ATTRIBUTE_HIDDEN;
 855
 856 /* Function shared by the COFF and ELF SH backends, which have no
 857    other common header files.  */
 858
 859 #ifndef _bfd_sh_align_load_span
 860 extern bfd_boolean _bfd_sh_align_load_span
 861   (bfd *, asection *, bfd_byte *,
 862    bfd_boolean (*) (bfd *, asection *, void *, bfd_byte *, bfd_vma),
 863    void *, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, bfd_boolean *) ATTRIBUTE_HIDDEN;
 864 #endif
 865
 866 /* This is the shape of the elements inside the already_linked hash
 867    table. It maps a name onto a list of already_linked elements with
 868    the same name.  */
 869
 870 struct bfd_section_already_linked_hash_entry
 871 {
 872   struct bfd_hash_entry root;
 873   struct bfd_section_already_linked *entry;
 874 };
 875
 876 struct bfd_section_already_linked
 877 {
 878   struct bfd_section_already_linked *next;
 879   asection *sec;
 880 };
 881
 882 extern struct bfd_section_already_linked_hash_entry *
 883   bfd_section_already_linked_table_lookup (const char *) ATTRIBUTE_HIDDEN;
 884 extern bfd_boolean bfd_section_already_linked_table_insert
 885   (struct bfd_section_already_linked_hash_entry *, asection *)
 886   ATTRIBUTE_HIDDEN;
 887 extern void bfd_section_already_linked_table_traverse
 888   (bfd_boolean (*) (struct bfd_section_already_linked_hash_entry *,
 889                     void *), void *) ATTRIBUTE_HIDDEN;
 890
 891 extern bfd_vma _bfd_read_unsigned_leb128
 892   (bfd *, bfd_byte *, unsigned int *) ATTRIBUTE_HIDDEN;
 893 extern bfd_signed_vma _bfd_read_signed_leb128
 894   (bfd *, bfd_byte *, unsigned int *) ATTRIBUTE_HIDDEN;
 895 extern bfd_vma _bfd_safe_read_leb128
 896   (bfd *, bfd_byte *, unsigned int *, bfd_boolean, const bfd_byte * const)
 897   ATTRIBUTE_HIDDEN;
 898
 899 #if GCC_VERSION >= 7000
 900 #define _bfd_mul_overflow(a, b, res) __builtin_mul_overflow (a, b, res)
 901 #else
 902 /* Assumes unsigned values.  Careful!  Args evaluated multiple times.  */
 903 #define _bfd_mul_overflow(a, b, res) \
 904   ((*res) = (a), (*res) *= (b), (b) != 0 && (*res) / (b) != (a))
 905 #endif