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) 1990-2022 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
 114 static inline char *
 115 bfd_strdup (const char *str)
 116 {
 117   size_t len = strlen (str) + 1;
 118   char *buf = bfd_malloc (len);
 119   if (buf != NULL)
 120     memcpy (buf, str, len);
 121   return buf;
 122 }
 123 /* These routines allocate and free things on the BFD's objalloc.  */
 124
 125 extern void bfd_release
 126   (bfd *, void *) ATTRIBUTE_HIDDEN;
 127
 128 extern bfd * _bfd_create_empty_archive_element_shell
 129   (bfd *) ATTRIBUTE_HIDDEN;
 130 extern bfd * _bfd_look_for_bfd_in_cache
 131   (bfd *, file_ptr) ATTRIBUTE_HIDDEN;
 132 extern bool _bfd_add_bfd_to_archive_cache
 133   (bfd *, file_ptr, bfd *) ATTRIBUTE_HIDDEN;
 134 extern bool _bfd_generic_mkarchive
 135   (bfd *) ATTRIBUTE_HIDDEN;
 136 extern char *_bfd_append_relative_path
 137   (bfd *, char *) ATTRIBUTE_HIDDEN;
 138 extern bfd_cleanup bfd_generic_archive_p
 139   (bfd *) ATTRIBUTE_HIDDEN;
 140 extern bool bfd_slurp_armap
 141   (bfd *) ATTRIBUTE_HIDDEN;
 142 #define bfd_slurp_bsd_armap bfd_slurp_armap
 143 #define bfd_slurp_coff_armap bfd_slurp_armap
 144 extern bool _bfd_archive_64_bit_slurp_armap
 145   (bfd *) ATTRIBUTE_HIDDEN;
 146 extern bool _bfd_archive_64_bit_write_armap
 147   (bfd *, unsigned int, struct orl *, unsigned int, int) ATTRIBUTE_HIDDEN;
 148 #define _bfd_archive_64_bit_slurp_extended_name_table \
 149   _bfd_slurp_extended_name_table
 150 #define _bfd_archive_64_bit_construct_extended_name_table \
 151   _bfd_archive_coff_construct_extended_name_table
 152 #define _bfd_archive_64_bit_truncate_arname \
 153   bfd_dont_truncate_arname
 154 #define _bfd_archive_64_bit_read_ar_hdr \
 155   _bfd_generic_read_ar_hdr
 156 #define _bfd_archive_64_bit_write_ar_hdr \
 157   _bfd_generic_write_ar_hdr
 158 #define _bfd_archive_64_bit_openr_next_archived_file \
 159   bfd_generic_openr_next_archived_file
 160 #define _bfd_archive_64_bit_get_elt_at_index \
 161   _bfd_generic_get_elt_at_index
 162 #define _bfd_archive_64_bit_generic_stat_arch_elt \
 163   bfd_generic_stat_arch_elt
 164 #define _bfd_archive_64_bit_update_armap_timestamp _bfd_bool_bfd_true
 165
 166 extern bool _bfd_slurp_extended_name_table
 167   (bfd *) ATTRIBUTE_HIDDEN;
 168 extern bool _bfd_construct_extended_name_table
 169   (bfd *, bool, char **, bfd_size_type *) ATTRIBUTE_HIDDEN;
 170 extern bool _bfd_write_archive_contents
 171   (bfd *) ATTRIBUTE_HIDDEN;
 172 extern bool _bfd_compute_and_write_armap
 173   (bfd *, unsigned int) ATTRIBUTE_HIDDEN;
 174 extern bfd *_bfd_get_elt_at_filepos
 175   (bfd *, file_ptr, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 176 extern bfd *_bfd_generic_get_elt_at_index
 177   (bfd *, symindex) ATTRIBUTE_HIDDEN;
 178 extern bfd * _bfd_new_bfd
 179   (void) ATTRIBUTE_HIDDEN;
 180 extern bool _bfd_free_cached_info
 181   (bfd *) ATTRIBUTE_HIDDEN;
 182
 183 extern bool _bfd_bool_bfd_false
 184   (bfd *) ATTRIBUTE_HIDDEN;
 185 extern bool _bfd_bool_bfd_asymbol_false
 186   (bfd *, asymbol *) ATTRIBUTE_HIDDEN;
 187 extern bool _bfd_bool_bfd_false_error
 188   (bfd *) ATTRIBUTE_HIDDEN;
 189 extern bool _bfd_bool_bfd_link_false_error
 190   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 191 extern bool _bfd_bool_bfd_true
 192   (bfd *) ATTRIBUTE_HIDDEN;
 193 extern bool _bfd_bool_bfd_link_true
 194   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 195 extern bool _bfd_bool_bfd_bfd_true
 196   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 197 extern bool _bfd_bool_bfd_uint_true
 198   (bfd *, unsigned int) ATTRIBUTE_HIDDEN;
 199 extern bool _bfd_bool_bfd_asection_bfd_asection_true
 200   (bfd *, asection *, bfd *, asection *) ATTRIBUTE_HIDDEN;
 201 extern bool _bfd_bool_bfd_asymbol_bfd_asymbol_true
 202   (bfd *, asymbol *, bfd *, asymbol *) ATTRIBUTE_HIDDEN;
 203 extern bool _bfd_bool_bfd_ptr_true
 204   (bfd *, void *) ATTRIBUTE_HIDDEN;
 205 extern void *_bfd_ptr_bfd_null_error
 206   (bfd *) ATTRIBUTE_HIDDEN;
 207 extern int _bfd_int_bfd_0
 208   (bfd *) ATTRIBUTE_HIDDEN;
 209 extern unsigned int _bfd_uint_bfd_0
 210   (bfd *) ATTRIBUTE_HIDDEN;
 211 extern long _bfd_long_bfd_0
 212   (bfd *) ATTRIBUTE_HIDDEN;
 213 extern long _bfd_long_bfd_n1_error
 214   (bfd *) ATTRIBUTE_HIDDEN;
 215 extern void _bfd_void_bfd
 216   (bfd *) ATTRIBUTE_HIDDEN;
 217 extern void _bfd_void_bfd_link
 218   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 219 extern void _bfd_void_bfd_asection
 220   (bfd *, asection *) ATTRIBUTE_HIDDEN;
 221
 222 extern bfd *_bfd_new_bfd_contained_in
 223   (bfd *) ATTRIBUTE_HIDDEN;
 224 extern bfd_cleanup _bfd_dummy_target
 225   (bfd *) ATTRIBUTE_HIDDEN;
 226 #define _bfd_no_cleanup _bfd_void_bfd
 227
 228 extern void bfd_dont_truncate_arname
 229   (bfd *, const char *, char *) ATTRIBUTE_HIDDEN;
 230 extern void bfd_bsd_truncate_arname
 231   (bfd *, const char *, char *) ATTRIBUTE_HIDDEN;
 232 extern void bfd_gnu_truncate_arname
 233   (bfd *, const char *, char *) ATTRIBUTE_HIDDEN;
 234
 235 extern bool _bfd_bsd_write_armap
 236   (bfd *, unsigned int, struct orl *, unsigned int, int) ATTRIBUTE_HIDDEN;
 237
 238 extern bool _bfd_coff_write_armap
 239   (bfd *, unsigned int, struct orl *, unsigned int, int) ATTRIBUTE_HIDDEN;
 240
 241 extern void *_bfd_generic_read_ar_hdr
 242   (bfd *) ATTRIBUTE_HIDDEN;
 243 extern void _bfd_ar_spacepad
 244   (char *, size_t, const char *, long) ATTRIBUTE_HIDDEN;
 245 extern bool _bfd_ar_sizepad
 246   (char *, size_t, bfd_size_type) ATTRIBUTE_HIDDEN;
 247
 248 extern void *_bfd_generic_read_ar_hdr_mag
 249   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 250
 251 extern bool _bfd_generic_write_ar_hdr
 252   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 253
 254 extern bool _bfd_bsd44_write_ar_hdr
 255   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 256
 257 extern bfd * bfd_generic_openr_next_archived_file
 258   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 259
 260 extern int bfd_generic_stat_arch_elt
 261   (bfd *, struct stat *) ATTRIBUTE_HIDDEN;
 262
 263 #define _bfd_read_ar_hdr(abfd) \
 264         BFD_SEND (abfd, _bfd_read_ar_hdr_fn, (abfd))
 265 #define _bfd_write_ar_hdr(archive, abfd)         \
 266         BFD_SEND (abfd, _bfd_write_ar_hdr_fn, (archive, abfd))
 267 \f
 268 /* Generic routines to use for BFD_JUMP_TABLE_GENERIC.  Use
 269    BFD_JUMP_TABLE_GENERIC (_bfd_generic).  */
 270
 271 #define _bfd_generic_close_and_cleanup _bfd_archive_close_and_cleanup
 272 extern bool _bfd_archive_close_and_cleanup
 273   (bfd *) ATTRIBUTE_HIDDEN;
 274 extern void _bfd_unlink_from_archive_parent (bfd *) ATTRIBUTE_HIDDEN;
 275 #define _bfd_generic_bfd_free_cached_info _bfd_bool_bfd_true
 276 extern bool _bfd_generic_new_section_hook
 277   (bfd *, asection *) ATTRIBUTE_HIDDEN;
 278 extern bool _bfd_generic_get_section_contents
 279   (bfd *, asection *, void *, file_ptr, bfd_size_type) ATTRIBUTE_HIDDEN;
 280 extern bool _bfd_generic_get_section_contents_in_window
 281   (bfd *, asection *, bfd_window *, file_ptr, bfd_size_type) ATTRIBUTE_HIDDEN;
 282
 283 /* Generic routines to use for BFD_JUMP_TABLE_COPY.  Use
 284    BFD_JUMP_TABLE_COPY (_bfd_generic).  */
 285
 286 #define _bfd_generic_bfd_copy_private_bfd_data _bfd_bool_bfd_bfd_true
 287 #define _bfd_generic_bfd_merge_private_bfd_data \
 288   _bfd_bool_bfd_link_true
 289 #define _bfd_generic_bfd_set_private_flags _bfd_bool_bfd_uint_true
 290 #define _bfd_generic_bfd_copy_private_section_data \
 291   _bfd_bool_bfd_asection_bfd_asection_true
 292 #define _bfd_generic_bfd_copy_private_symbol_data \
 293   _bfd_bool_bfd_asymbol_bfd_asymbol_true
 294 #define _bfd_generic_bfd_copy_private_header_data _bfd_bool_bfd_bfd_true
 295 #define _bfd_generic_bfd_print_private_bfd_data _bfd_bool_bfd_ptr_true
 296
 297 extern bool _bfd_generic_init_private_section_data
 298   (bfd *, asection *, bfd *, asection *, struct bfd_link_info *)
 299   ATTRIBUTE_HIDDEN;
 300
 301 /* Routines to use for BFD_JUMP_TABLE_CORE when there is no core file
 302    support.  Use BFD_JUMP_TABLE_CORE (_bfd_nocore).  */
 303
 304 extern char *_bfd_nocore_core_file_failing_command
 305   (bfd *) ATTRIBUTE_HIDDEN;
 306 extern int _bfd_nocore_core_file_failing_signal
 307   (bfd *) ATTRIBUTE_HIDDEN;
 308 extern bool _bfd_nocore_core_file_matches_executable_p
 309   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 310 extern int _bfd_nocore_core_file_pid
 311   (bfd *) ATTRIBUTE_HIDDEN;
 312
 313 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE when there is no archive
 314    file support.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive).  */
 315
 316 #define _bfd_noarchive_slurp_armap _bfd_bool_bfd_false_error
 317 #define _bfd_noarchive_slurp_extended_name_table _bfd_bool_bfd_false_error
 318 extern bool _bfd_noarchive_construct_extended_name_table
 319   (bfd *, char **, bfd_size_type *, const char **) ATTRIBUTE_HIDDEN;
 320 extern void _bfd_noarchive_truncate_arname
 321   (bfd *, const char *, char *) ATTRIBUTE_HIDDEN;
 322 extern bool _bfd_noarchive_write_armap
 323   (bfd *, unsigned int, struct orl *, unsigned int, int) ATTRIBUTE_HIDDEN;
 324 #define _bfd_noarchive_read_ar_hdr _bfd_ptr_bfd_null_error
 325 extern bool _bfd_noarchive_write_ar_hdr
 326   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 327 extern bfd *
 328 _bfd_noarchive_openr_next_archived_file
 329   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 330 extern bfd * _bfd_noarchive_get_elt_at_index
 331   (bfd *, symindex) ATTRIBUTE_HIDDEN;
 332 #define _bfd_noarchive_generic_stat_arch_elt bfd_generic_stat_arch_elt
 333 #define _bfd_noarchive_update_armap_timestamp _bfd_bool_bfd_false_error
 334
 335 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD style
 336    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd).  */
 337
 338 #define _bfd_archive_bsd_slurp_armap bfd_slurp_bsd_armap
 339 #define _bfd_archive_bsd_slurp_extended_name_table \
 340   _bfd_slurp_extended_name_table
 341 extern bool _bfd_archive_bsd_construct_extended_name_table
 342   (bfd *, char **, bfd_size_type *, const char **) ATTRIBUTE_HIDDEN;
 343 #define _bfd_archive_bsd_truncate_arname bfd_bsd_truncate_arname
 344 #define _bfd_archive_bsd_write_armap _bfd_bsd_write_armap
 345 #define _bfd_archive_bsd_read_ar_hdr _bfd_generic_read_ar_hdr
 346 #define _bfd_archive_bsd_write_ar_hdr _bfd_generic_write_ar_hdr
 347 #define _bfd_archive_bsd_openr_next_archived_file \
 348   bfd_generic_openr_next_archived_file
 349 #define _bfd_archive_bsd_get_elt_at_index _bfd_generic_get_elt_at_index
 350 #define _bfd_archive_bsd_generic_stat_arch_elt \
 351   bfd_generic_stat_arch_elt
 352 extern bool _bfd_archive_bsd_update_armap_timestamp
 353   (bfd *) ATTRIBUTE_HIDDEN;
 354
 355 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get COFF style
 356    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff).  */
 357
 358 #define _bfd_archive_coff_slurp_armap bfd_slurp_coff_armap
 359 #define _bfd_archive_coff_slurp_extended_name_table \
 360   _bfd_slurp_extended_name_table
 361 extern bool _bfd_archive_coff_construct_extended_name_table
 362   (bfd *, char **, bfd_size_type *, const char **) ATTRIBUTE_HIDDEN;
 363 #define _bfd_archive_coff_truncate_arname bfd_dont_truncate_arname
 364 #define _bfd_archive_coff_write_armap _bfd_coff_write_armap
 365 #define _bfd_archive_coff_read_ar_hdr _bfd_generic_read_ar_hdr
 366 #define _bfd_archive_coff_write_ar_hdr _bfd_generic_write_ar_hdr
 367 #define _bfd_archive_coff_openr_next_archived_file \
 368   bfd_generic_openr_next_archived_file
 369 #define _bfd_archive_coff_get_elt_at_index _bfd_generic_get_elt_at_index
 370 #define _bfd_archive_coff_generic_stat_arch_elt \
 371   bfd_generic_stat_arch_elt
 372 #define _bfd_archive_coff_update_armap_timestamp _bfd_bool_bfd_true
 373
 374 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD4.4 style
 375    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd44).  */
 376
 377 #define _bfd_archive_bsd44_slurp_armap bfd_slurp_bsd_armap
 378 #define _bfd_archive_bsd44_slurp_extended_name_table \
 379   _bfd_slurp_extended_name_table
 380 extern bool _bfd_archive_bsd44_construct_extended_name_table
 381   (bfd *, char **, bfd_size_type *, const char **) ATTRIBUTE_HIDDEN;
 382 #define _bfd_archive_bsd44_truncate_arname bfd_bsd_truncate_arname
 383 #define _bfd_archive_bsd44_write_armap _bfd_bsd_write_armap
 384 #define _bfd_archive_bsd44_read_ar_hdr _bfd_generic_read_ar_hdr
 385 #define _bfd_archive_bsd44_write_ar_hdr _bfd_bsd44_write_ar_hdr
 386 #define _bfd_archive_bsd44_openr_next_archived_file \
 387   bfd_generic_openr_next_archived_file
 388 #define _bfd_archive_bsd44_get_elt_at_index _bfd_generic_get_elt_at_index
 389 #define _bfd_archive_bsd44_generic_stat_arch_elt \
 390   bfd_generic_stat_arch_elt
 391 #define _bfd_archive_bsd44_update_armap_timestamp \
 392   _bfd_archive_bsd_update_armap_timestamp
 393
 394 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get VMS style
 395    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_vms_lib).  Some of them
 396    are irrelevant.  */
 397
 398 extern bool _bfd_vms_lib_write_archive_contents
 399   (bfd *) ATTRIBUTE_HIDDEN;
 400 #define _bfd_vms_lib_slurp_armap _bfd_noarchive_slurp_armap
 401 #define _bfd_vms_lib_slurp_extended_name_table \
 402   _bfd_noarchive_slurp_extended_name_table
 403 #define _bfd_vms_lib_construct_extended_name_table \
 404   _bfd_noarchive_construct_extended_name_table
 405 #define _bfd_vms_lib_truncate_arname _bfd_noarchive_truncate_arname
 406 #define _bfd_vms_lib_write_armap _bfd_noarchive_write_armap
 407 #define _bfd_vms_lib_read_ar_hdr _bfd_noarchive_read_ar_hdr
 408 #define _bfd_vms_lib_write_ar_hdr _bfd_noarchive_write_ar_hdr
 409 extern bfd *_bfd_vms_lib_openr_next_archived_file
 410   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 411 extern bfd *_bfd_vms_lib_get_elt_at_index
 412   (bfd *, symindex) ATTRIBUTE_HIDDEN;
 413 extern int _bfd_vms_lib_generic_stat_arch_elt
 414   (bfd *, struct stat *) ATTRIBUTE_HIDDEN;
 415 #define _bfd_vms_lib_update_armap_timestamp _bfd_bool_bfd_true
 416
 417 /* Extra routines for VMS style archives.  */
 418
 419 extern symindex _bfd_vms_lib_find_symbol
 420   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 421 extern bfd *_bfd_vms_lib_get_imagelib_file
 422   (bfd *) ATTRIBUTE_HIDDEN;
 423 extern bfd_cleanup _bfd_vms_lib_alpha_archive_p
 424   (bfd *) ATTRIBUTE_HIDDEN;
 425 extern bfd_cleanup _bfd_vms_lib_ia64_archive_p
 426   (bfd *) ATTRIBUTE_HIDDEN;
 427 extern bool _bfd_vms_lib_alpha_mkarchive
 428   (bfd *) ATTRIBUTE_HIDDEN;
 429 extern bool _bfd_vms_lib_ia64_mkarchive
 430   (bfd *) ATTRIBUTE_HIDDEN;
 431
 432 /* Routines to use for BFD_JUMP_TABLE_SYMBOLS where there is no symbol
 433    support.  Use BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols).  */
 434
 435 #define _bfd_nosymbols_get_symtab_upper_bound _bfd_long_bfd_n1_error
 436 extern long _bfd_nosymbols_canonicalize_symtab
 437   (bfd *, asymbol **) ATTRIBUTE_HIDDEN;
 438 #define _bfd_nosymbols_make_empty_symbol _bfd_generic_make_empty_symbol
 439 extern void _bfd_nosymbols_print_symbol
 440   (bfd *, void *, asymbol *, bfd_print_symbol_type) ATTRIBUTE_HIDDEN;
 441 extern void _bfd_nosymbols_get_symbol_info
 442   (bfd *, asymbol *, symbol_info *) ATTRIBUTE_HIDDEN;
 443 extern const char * _bfd_nosymbols_get_symbol_version_string
 444   (bfd *, asymbol *, bool, bool *) ATTRIBUTE_HIDDEN;
 445 extern bool _bfd_nosymbols_bfd_is_local_label_name
 446   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 447 #define _bfd_nosymbols_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
 448 extern alent *_bfd_nosymbols_get_lineno
 449   (bfd *, asymbol *) ATTRIBUTE_HIDDEN;
 450 extern bool _bfd_nosymbols_find_nearest_line
 451   (bfd *, asymbol **, asection *, bfd_vma,
 452    const char **, const char **, unsigned int *, unsigned int *)
 453   ATTRIBUTE_HIDDEN;
 454 extern bool _bfd_nosymbols_find_nearest_line_with_alt
 455   (bfd *, const char *, asymbol **, asection *, bfd_vma,
 456    const char **, const char **, unsigned int *, unsigned int *)
 457   ATTRIBUTE_HIDDEN;
 458 extern bool _bfd_nosymbols_find_line
 459   (bfd *, asymbol **, asymbol *, const char **, unsigned int *)
 460   ATTRIBUTE_HIDDEN;
 461 extern bool _bfd_nosymbols_find_inliner_info
 462   (bfd *, const char **, const char **, unsigned int *) ATTRIBUTE_HIDDEN;
 463 extern asymbol *_bfd_nosymbols_bfd_make_debug_symbol
 464   (bfd *, void *, unsigned long) ATTRIBUTE_HIDDEN;
 465 extern long _bfd_nosymbols_read_minisymbols
 466   (bfd *, bool, void **, unsigned int *) ATTRIBUTE_HIDDEN;
 467 extern asymbol *_bfd_nosymbols_minisymbol_to_symbol
 468   (bfd *, bool, const void *, asymbol *) ATTRIBUTE_HIDDEN;
 469
 470 /* Routines to use for BFD_JUMP_TABLE_RELOCS when there is no reloc
 471    support.  Use BFD_JUMP_TABLE_RELOCS (_bfd_norelocs).  */
 472
 473 extern long _bfd_norelocs_get_reloc_upper_bound
 474   (bfd *, asection *) ATTRIBUTE_HIDDEN;
 475 extern long _bfd_norelocs_canonicalize_reloc
 476   (bfd *, asection *, arelent **, asymbol **) ATTRIBUTE_HIDDEN;
 477 extern void _bfd_norelocs_set_reloc
 478   (bfd *, asection *, arelent **, unsigned int) ATTRIBUTE_HIDDEN;
 479 extern reloc_howto_type *_bfd_norelocs_bfd_reloc_type_lookup
 480   (bfd *, bfd_reloc_code_real_type) ATTRIBUTE_HIDDEN;
 481 extern reloc_howto_type *_bfd_norelocs_bfd_reloc_name_lookup
 482   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 483
 484 /* Routines to use for BFD_JUMP_TABLE_WRITE for targets which may not
 485    be written.  Use BFD_JUMP_TABLE_WRITE (_bfd_nowrite).  */
 486
 487 extern bool _bfd_nowrite_set_arch_mach
 488   (bfd *, enum bfd_architecture, unsigned long) ATTRIBUTE_HIDDEN;
 489 extern bool _bfd_nowrite_set_section_contents
 490   (bfd *, asection *, const void *, file_ptr, bfd_size_type) ATTRIBUTE_HIDDEN;
 491
 492 /* Generic routines to use for BFD_JUMP_TABLE_WRITE.  Use
 493    BFD_JUMP_TABLE_WRITE (_bfd_generic).  */
 494
 495 #define _bfd_generic_set_arch_mach bfd_default_set_arch_mach
 496 extern bool _bfd_generic_set_section_contents
 497   (bfd *, asection *, const void *, file_ptr, bfd_size_type) ATTRIBUTE_HIDDEN;
 498
 499 /* Routines to use for BFD_JUMP_TABLE_LINK for targets which do not
 500    support linking.  Use BFD_JUMP_TABLE_LINK (_bfd_nolink).  */
 501
 502 extern int _bfd_nolink_sizeof_headers
 503   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 504 extern bfd_byte *_bfd_nolink_bfd_get_relocated_section_contents
 505   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 506    bfd_byte *, bool, asymbol **) ATTRIBUTE_HIDDEN;
 507 extern bool _bfd_nolink_bfd_relax_section
 508   (bfd *, asection *, struct bfd_link_info *, bool *) ATTRIBUTE_HIDDEN;
 509 #define _bfd_nolink_bfd_gc_sections _bfd_bool_bfd_link_false_error
 510 extern bool _bfd_nolink_bfd_lookup_section_flags
 511   (struct bfd_link_info *, struct flag_info *, asection *) ATTRIBUTE_HIDDEN;
 512 #define _bfd_nolink_bfd_merge_sections _bfd_bool_bfd_link_false_error
 513 extern bool _bfd_nolink_bfd_is_group_section
 514   (bfd *, const asection *) ATTRIBUTE_HIDDEN;
 515 extern const char *_bfd_nolink_bfd_group_name
 516   (bfd *, const asection *) ATTRIBUTE_HIDDEN;
 517 extern bool _bfd_nolink_bfd_discard_group
 518   (bfd *, asection *) ATTRIBUTE_HIDDEN;
 519 extern struct bfd_link_hash_table *_bfd_nolink_bfd_link_hash_table_create
 520   (bfd *) ATTRIBUTE_HIDDEN;
 521 #define _bfd_nolink_bfd_link_add_symbols _bfd_bool_bfd_link_false_error
 522 extern void _bfd_nolink_bfd_link_just_syms
 523   (asection *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 524 extern void _bfd_nolink_bfd_copy_link_hash_symbol_type
 525   (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *)
 526   ATTRIBUTE_HIDDEN;
 527 #define _bfd_nolink_bfd_final_link _bfd_bool_bfd_link_false_error
 528 extern bool _bfd_nolink_bfd_link_split_section
 529   (bfd *, struct bfd_section *) ATTRIBUTE_HIDDEN;
 530 extern bool _bfd_nolink_section_already_linked
 531   (bfd *, asection *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 532 extern bool _bfd_nolink_bfd_define_common_symbol
 533   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *)
 534   ATTRIBUTE_HIDDEN;
 535 #define _bfd_nolink_bfd_link_hide_symbol \
 536   _bfd_generic_link_hide_symbol
 537 extern struct bfd_link_hash_entry *_bfd_nolink_bfd_define_start_stop
 538   (struct bfd_link_info *, const char *, asection *) ATTRIBUTE_HIDDEN;
 539 #define _bfd_nolink_bfd_link_check_relocs \
 540   _bfd_generic_link_check_relocs
 541
 542 /* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
 543    have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
 544    (_bfd_nodynamic).  */
 545
 546 #define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_long_bfd_n1_error
 547 #define _bfd_nodynamic_canonicalize_dynamic_symtab \
 548   _bfd_nosymbols_canonicalize_symtab
 549 extern long _bfd_nodynamic_get_synthetic_symtab
 550   (bfd *, long, asymbol **, long, asymbol **, asymbol **) ATTRIBUTE_HIDDEN;
 551 #define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_long_bfd_n1_error
 552 extern long _bfd_nodynamic_canonicalize_dynamic_reloc
 553   (bfd *, arelent **, asymbol **) ATTRIBUTE_HIDDEN;
 554 \f
 555 /* Generic routine to determine of the given symbol is a local
 556    label.  */
 557 extern bool bfd_generic_is_local_label_name
 558   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 559
 560 /* Generic minisymbol routines.  */
 561 extern long _bfd_generic_read_minisymbols
 562   (bfd *, bool, void **, unsigned int *) ATTRIBUTE_HIDDEN;
 563 extern asymbol *_bfd_generic_minisymbol_to_symbol
 564   (bfd *, bool, const void *, asymbol *) ATTRIBUTE_HIDDEN;
 565
 566 /* Find the nearest line using .stab/.stabstr sections.  */
 567 extern bool _bfd_stab_section_find_nearest_line
 568   (bfd *, asymbol **, asection *, bfd_vma, bool *,
 569    const char **, const char **, unsigned int *, void **) ATTRIBUTE_HIDDEN;
 570
 571 /* Find the nearest line using DWARF 1 debugging information.  */
 572 extern bool _bfd_dwarf1_find_nearest_line
 573   (bfd *, asymbol **, asection *, bfd_vma,
 574    const char **, const char **, unsigned int *) ATTRIBUTE_HIDDEN;
 575
 576 struct dwarf_debug_section
 577 {
 578   const char * uncompressed_name;
 579   const char * compressed_name;
 580 };
 581
 582 /* Map of uncompressed DWARF debug section name to compressed one.  It
 583    is terminated by NULL uncompressed_name.  */
 584
 585 extern const struct dwarf_debug_section dwarf_debug_sections[] ATTRIBUTE_HIDDEN;
 586
 587 /* Find the nearest line using DWARF 2 debugging information.  */
 588 extern int _bfd_dwarf2_find_nearest_line
 589   (bfd *, asymbol **, asymbol *, asection *, bfd_vma,
 590    const char **, const char **, unsigned int *, unsigned int *,
 591    const struct dwarf_debug_section *, void **) ATTRIBUTE_HIDDEN;
 592
 593 /* Find the nearest line using DWARF 2 debugging information, with
 594    the option of specifying a .gnu_debugaltlink file.  */
 595 extern int _bfd_dwarf2_find_nearest_line_with_alt
 596   (bfd *, const char *, asymbol **, asymbol *, asection *, bfd_vma,
 597    const char **, const char **, unsigned int *, unsigned int *,
 598    const struct dwarf_debug_section *, void **) ATTRIBUTE_HIDDEN;
 599
 600 /* Find the bias between DWARF addresses and real addresses.  */
 601 extern bfd_signed_vma _bfd_dwarf2_find_symbol_bias
 602   (asymbol **, void **) ATTRIBUTE_HIDDEN;
 603
 604 /* Find inliner info after calling bfd_find_nearest_line. */
 605 extern bool _bfd_dwarf2_find_inliner_info
 606   (bfd *, const char **, const char **, unsigned int *, void **)
 607   ATTRIBUTE_HIDDEN;
 608
 609 /* Read DWARF 2 debugging information. */
 610 extern bool _bfd_dwarf2_slurp_debug_info
 611   (bfd *, bfd *, const struct dwarf_debug_section *, asymbol **, void **,
 612    bool) ATTRIBUTE_HIDDEN;
 613
 614 /* Clean up the data used to handle DWARF 2 debugging information. */
 615 extern void _bfd_dwarf2_cleanup_debug_info
 616   (bfd *, void **) ATTRIBUTE_HIDDEN;
 617
 618 extern void _bfd_stab_cleanup
 619   (bfd *, void **) ATTRIBUTE_HIDDEN;
 620
 621 /* Create a new section entry.  */
 622 extern struct bfd_hash_entry *bfd_section_hash_newfunc
 623   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *)
 624   ATTRIBUTE_HIDDEN;
 625
 626 /* A routine to create entries for a bfd_link_hash_table.  */
 627 extern struct bfd_hash_entry *_bfd_link_hash_newfunc
 628   (struct bfd_hash_entry *entry, struct bfd_hash_table *table,
 629    const char *string) ATTRIBUTE_HIDDEN;
 630
 631 /* Initialize a bfd_link_hash_table.  */
 632 extern bool _bfd_link_hash_table_init
 633   (struct bfd_link_hash_table *, bfd *,
 634    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 635                                struct bfd_hash_table *,
 636                                const char *),
 637    unsigned int) ATTRIBUTE_HIDDEN;
 638
 639 /* Generic link hash table creation routine.  */
 640 extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
 641   (bfd *) ATTRIBUTE_HIDDEN;
 642
 643 /* Generic link hash table destruction routine.  */
 644 extern void _bfd_generic_link_hash_table_free
 645   (bfd *) ATTRIBUTE_HIDDEN;
 646
 647 /* Generic add symbol routine.  */
 648 extern bool _bfd_generic_link_add_symbols
 649   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 650
 651 /* Generic archive add symbol routine.  */
 652 extern bool _bfd_generic_link_add_archive_symbols
 653   (bfd *, struct bfd_link_info *,
 654    bool (*) (bfd *, struct bfd_link_info *,
 655                     struct bfd_link_hash_entry *, const char *,
 656                     bool *)) ATTRIBUTE_HIDDEN;
 657
 658 /* Forward declaration to avoid prototype errors.  */
 659 typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
 660
 661 /* Generic routine to add a single symbol.  */
 662 extern bool _bfd_generic_link_add_one_symbol
 663   (struct bfd_link_info *, bfd *, const char *name, flagword,
 664    asection *, bfd_vma, const char *, bool copy,
 665    bool constructor, struct bfd_link_hash_entry **) ATTRIBUTE_HIDDEN;
 666
 667 /* Generic routine to mark section as supplying symbols only.  */
 668 extern void _bfd_generic_link_just_syms
 669   (asection *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 670
 671 /* Generic routine that does nothing.  */
 672 extern void _bfd_generic_copy_link_hash_symbol_type
 673   (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *)
 674   ATTRIBUTE_HIDDEN;
 675
 676 /* Generic link routine.  */
 677 extern bool _bfd_generic_final_link
 678   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 679
 680 extern bool _bfd_generic_link_split_section
 681   (bfd *, struct bfd_section *) ATTRIBUTE_HIDDEN;
 682
 683 extern bool _bfd_generic_section_already_linked
 684   (bfd *, asection *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 685
 686 /* Generic reloc_link_order processing routine.  */
 687 extern bool _bfd_generic_reloc_link_order
 688   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *)
 689   ATTRIBUTE_HIDDEN;
 690
 691 /* Default link order processing routine.  */
 692 extern bool _bfd_default_link_order
 693   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *)
 694   ATTRIBUTE_HIDDEN;
 695
 696 /* Count the number of reloc entries in a link order list.  */
 697 extern unsigned int _bfd_count_link_order_relocs
 698   (struct bfd_link_order *) ATTRIBUTE_HIDDEN;
 699
 700 /* Final link relocation routine.  */
 701 extern bfd_reloc_status_type _bfd_final_link_relocate
 702   (reloc_howto_type *, bfd *, asection *, bfd_byte *,
 703    bfd_vma, bfd_vma, bfd_vma) ATTRIBUTE_HIDDEN;
 704
 705 /* Relocate a particular location by a howto and a value.  */
 706 extern bfd_reloc_status_type _bfd_relocate_contents
 707   (reloc_howto_type *, bfd *, bfd_vma, bfd_byte *) ATTRIBUTE_HIDDEN;
 708
 709 /* Clear a given location using a given howto.  */
 710 extern bfd_reloc_status_type _bfd_clear_contents
 711   (reloc_howto_type *, bfd *, asection *, bfd_byte *, bfd_vma) ATTRIBUTE_HIDDEN;
 712
 713 /* Link stabs in sections in the first pass.  */
 714
 715 extern bool _bfd_link_section_stabs
 716   (bfd *, struct stab_info *, asection *, asection *, void **,
 717    bfd_size_type *) ATTRIBUTE_HIDDEN;
 718
 719 /* Eliminate stabs for discarded functions and symbols.  */
 720 extern bool _bfd_discard_section_stabs
 721   (bfd *, asection *, void *, bool (*) (bfd_vma, void *), void *)
 722   ATTRIBUTE_HIDDEN;
 723
 724 /* Write out the .stab section when linking stabs in sections.  */
 725
 726 extern bool _bfd_write_section_stabs
 727   (bfd *, struct stab_info *, asection *, void **, bfd_byte *)
 728   ATTRIBUTE_HIDDEN;
 729
 730 /* Write out the .stabstr string table when linking stabs in sections.  */
 731
 732 extern bool _bfd_write_stab_strings
 733   (bfd *, struct stab_info *) ATTRIBUTE_HIDDEN;
 734
 735 /* Find an offset within a .stab section when linking stabs in
 736    sections.  */
 737
 738 extern bfd_vma _bfd_stab_section_offset
 739   (asection *, void *, bfd_vma) ATTRIBUTE_HIDDEN;
 740
 741 /* Register a SEC_MERGE section as a candidate for merging.  */
 742
 743 extern bool _bfd_add_merge_section
 744   (bfd *, void **, asection *, void **) ATTRIBUTE_HIDDEN;
 745
 746 /* Attempt to merge SEC_MERGE sections.  */
 747
 748 extern bool _bfd_merge_sections
 749   (bfd *, struct bfd_link_info *, void *, void (*) (bfd *, asection *))
 750   ATTRIBUTE_HIDDEN;
 751
 752 /* Write out a merged section.  */
 753
 754 extern bool _bfd_write_merged_section
 755   (bfd *, asection *, void *) ATTRIBUTE_HIDDEN;
 756
 757 /* Find an offset within a modified SEC_MERGE section.  */
 758
 759 extern bfd_vma _bfd_merged_section_offset
 760   (bfd *, asection **, void *, bfd_vma) ATTRIBUTE_HIDDEN;
 761
 762 /* Tidy up when done.  */
 763
 764 extern void _bfd_merge_sections_free (void *) ATTRIBUTE_HIDDEN;
 765
 766 /* Create a string table.  */
 767 extern struct bfd_strtab_hash *_bfd_stringtab_init
 768   (void) ATTRIBUTE_HIDDEN;
 769
 770 /* Create an XCOFF .debug section style string table.  */
 771 extern struct bfd_strtab_hash *_bfd_xcoff_stringtab_init
 772   (bool isxcoff64) ATTRIBUTE_HIDDEN;
 773
 774 /* Free a string table.  */
 775 extern void _bfd_stringtab_free
 776   (struct bfd_strtab_hash *) ATTRIBUTE_HIDDEN;
 777
 778 /* Get the size of a string table.  */
 779 extern bfd_size_type _bfd_stringtab_size
 780   (struct bfd_strtab_hash *) ATTRIBUTE_HIDDEN;
 781
 782 /* Add a string to a string table.  */
 783 extern bfd_size_type _bfd_stringtab_add
 784   (struct bfd_strtab_hash *, const char *, bool hash, bool copy)
 785   ATTRIBUTE_HIDDEN;
 786
 787 /* Write out a string table.  */
 788 extern bool _bfd_stringtab_emit
 789   (bfd *, struct bfd_strtab_hash *) ATTRIBUTE_HIDDEN;
 790 \f
 791 /* Macros to tell if bfds are read or write enabled.
 792
 793    Note that bfds open for read may be scribbled into if the fd passed
 794    to bfd_fdopenr is actually open both for read and write
 795    simultaneously.  However an output bfd will never be open for
 796    read.  Therefore sometimes you want to check bfd_read_p or
 797    !bfd_read_p, and only sometimes bfd_write_p.
 798 */
 799
 800 #define bfd_read_p(abfd) \
 801   ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
 802 #define bfd_write_p(abfd) \
 803   ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
 804
 805 extern void bfd_assert
 806   (const char*,int) ATTRIBUTE_HIDDEN;
 807
 808 #define BFD_ASSERT(x) \
 809   do { if (!(x)) bfd_assert(__FILE__,__LINE__); } while (0)
 810
 811 #define BFD_FAIL() \
 812   do { bfd_assert(__FILE__,__LINE__); } while (0)
 813
 814 extern void _bfd_abort
 815   (const char *, int, const char *) ATTRIBUTE_NORETURN ATTRIBUTE_HIDDEN;
 816
 817 /* if gcc >= 2.6, we can give a function name, too */
 818 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
 819 #define __PRETTY_FUNCTION__  ((char *) NULL)
 820 #endif
 821
 822 #undef abort
 823 #define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
 824
 825 /* Manipulate a system FILE but using BFD's "file_ptr", rather than
 826    the system "off_t" or "off64_t", as the offset.  */
 827 extern file_ptr _bfd_real_ftell
 828   (FILE *) ATTRIBUTE_HIDDEN;
 829 extern int _bfd_real_fseek
 830   (FILE *, file_ptr, int) ATTRIBUTE_HIDDEN;
 831 extern FILE *_bfd_real_fopen
 832   (const char *, const char *) ATTRIBUTE_HIDDEN;
 833
 834 /* List of supported target vectors, and the default vector (if
 835    bfd_default_vector[0] is NULL, there is no default).  */
 836 extern const bfd_target *const *const bfd_target_vector ATTRIBUTE_HIDDEN;
 837 extern const bfd_target *bfd_default_vector[] ATTRIBUTE_HIDDEN;
 838
 839 /* List of associated target vectors.  */
 840 extern const bfd_target *const *const bfd_associated_vector ATTRIBUTE_HIDDEN;
 841
 842 /* Functions shared by the ECOFF and MIPS ELF backends, which have no
 843    other common header files.  */
 844
 845 #if defined(__STDC__) || defined(ALMOST_STDC)
 846 struct ecoff_find_line;
 847 #endif
 848
 849 extern bool _bfd_ecoff_locate_line
 850   (bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
 851    const struct ecoff_debug_swap * const, struct ecoff_find_line *,
 852    const char **, const char **, unsigned int *) ATTRIBUTE_HIDDEN;
 853 extern bool _bfd_ecoff_get_accumulated_pdr
 854   (void *, bfd_byte *) ATTRIBUTE_HIDDEN;
 855 extern bool _bfd_ecoff_get_accumulated_sym
 856   (void *, bfd_byte *) ATTRIBUTE_HIDDEN;
 857 extern bool _bfd_ecoff_get_accumulated_ss
 858   (void *, bfd_byte *) ATTRIBUTE_HIDDEN;
 859
 860 extern bfd_vma _bfd_get_gp_value
 861   (bfd *) ATTRIBUTE_HIDDEN;
 862 extern void _bfd_set_gp_value
 863   (bfd *, bfd_vma) ATTRIBUTE_HIDDEN;
 864
 865 /* Function shared by the COFF and ELF SH backends, which have no
 866    other common header files.  */
 867
 868 #ifndef _bfd_sh_align_load_span
 869 extern bool _bfd_sh_align_load_span
 870   (bfd *, asection *, bfd_byte *,
 871    bool (*) (bfd *, asection *, void *, bfd_byte *, bfd_vma),
 872    void *, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, bool *) ATTRIBUTE_HIDDEN;
 873 #endif
 874
 875 /* This is the shape of the elements inside the already_linked hash
 876    table. It maps a name onto a list of already_linked elements with
 877    the same name.  */
 878
 879 struct bfd_section_already_linked_hash_entry
 880 {
 881   struct bfd_hash_entry root;
 882   struct bfd_section_already_linked *entry;
 883 };
 884
 885 struct bfd_section_already_linked
 886 {
 887   struct bfd_section_already_linked *next;
 888   asection *sec;
 889 };
 890
 891 extern struct bfd_section_already_linked_hash_entry *
 892   bfd_section_already_linked_table_lookup (const char *) ATTRIBUTE_HIDDEN;
 893 extern bool bfd_section_already_linked_table_insert
 894   (struct bfd_section_already_linked_hash_entry *, asection *)
 895   ATTRIBUTE_HIDDEN;
 896 extern void bfd_section_already_linked_table_traverse
 897   (bool (*) (struct bfd_section_already_linked_hash_entry *,
 898                     void *), void *) ATTRIBUTE_HIDDEN;
 899
 900 extern bfd_vma _bfd_read_unsigned_leb128
 901   (bfd *, bfd_byte *, unsigned int *) ATTRIBUTE_HIDDEN;
 902 extern bfd_signed_vma _bfd_read_signed_leb128
 903   (bfd *, bfd_byte *, unsigned int *) ATTRIBUTE_HIDDEN;
 904 extern bfd_vma _bfd_safe_read_leb128
 905   (bfd *, bfd_byte **, bool, const bfd_byte * const) ATTRIBUTE_HIDDEN;
 906 extern bfd_byte * _bfd_write_unsigned_leb128
 907   (bfd_byte *, bfd_byte *, bfd_vma) ATTRIBUTE_HIDDEN;
 908
 909 extern struct bfd_link_info *_bfd_get_link_info (bfd *);
 910
 911 extern bool _bfd_link_keep_memory (struct bfd_link_info *)
 912   ATTRIBUTE_HIDDEN;
 913
 914 #if GCC_VERSION >= 7000
 915 #define _bfd_mul_overflow(a, b, res) __builtin_mul_overflow (a, b, res)
 916 #else
 917 /* Assumes unsigned values.  Careful!  Args evaluated multiple times.  */
 918 #define _bfd_mul_overflow(a, b, res) \
 919   ((*res) = (a), (*res) *= (b), (b) != 0 && (*res) / (b) != (a))
 920 #endif
 921
 922 #ifdef __GNUC__
 923 #define _bfd_constant_p(v) __builtin_constant_p (v)
 924 #else
 925 #define _bfd_constant_p(v) 0
 926 #endif
 927
 928 static inline bfd_byte *
 929 _bfd_alloc_and_read (bfd *abfd, bfd_size_type asize, bfd_size_type rsize)
 930 {
 931   bfd_byte *mem;
 932   if (!_bfd_constant_p (rsize))
 933     {
 934       ufile_ptr filesize = bfd_get_file_size (abfd);
 935       if (filesize != 0 && rsize > filesize)
 936         {
 937           bfd_set_error (bfd_error_file_truncated);
 938           return NULL;
 939         }
 940     }
 941   mem = bfd_alloc (abfd, asize);
 942   if (mem != NULL)
 943     {
 944       if (bfd_bread (mem, rsize, abfd) == rsize)
 945         return mem;
 946       bfd_release (abfd, mem);
 947     }
 948   return NULL;
 949 }
 950
 951 static inline bfd_byte *
 952 _bfd_malloc_and_read (bfd *abfd, bfd_size_type asize, bfd_size_type rsize)
 953 {
 954   bfd_byte *mem;
 955   if (!_bfd_constant_p (rsize))
 956     {
 957       ufile_ptr filesize = bfd_get_file_size (abfd);
 958       if (filesize != 0 && rsize > filesize)
 959         {
 960           bfd_set_error (bfd_error_file_truncated);
 961           return NULL;
 962         }
 963     }
 964   mem = bfd_malloc (asize);
 965   if (mem != NULL)
 966     {
 967       if (bfd_bread (mem, rsize, abfd) == rsize)
 968         return mem;
 969       free (mem);
 970     }
 971   return NULL;
 972 }