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) 1990-2023 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   ufile_ptr first_file_filepos;
  76   /* Speed up searching the armap */
  77   htab_t cache;
  78   carsym *symdefs;              /* The symdef entries.  */
  79   symindex symdef_count;        /* How many there are.  */
  80   char *extended_names;         /* Clever intel extension.  */
  81   bfd_size_type extended_names_size; /* Size of extended names.  */
  82   /* When more compilers are standard C, this can be a time_t.  */
  83   long  armap_timestamp;        /* Timestamp value written into armap.
  84                                    This is used for BSD archives to check
  85                                    that the timestamp is recent enough
  86                                    for the BSD linker to not complain,
  87                                    just before we finish writing an
  88                                    archive.  */
  89   file_ptr armap_datepos;       /* Position within archive to seek to
  90                                    rewrite the date field.  */
  91   void *tdata;                  /* Backend specific information.  */
  92 };
  93
  94 #define bfd_ardata(bfd) ((bfd)->tdata.aout_ar_data)
  95
  96 /* Goes in bfd's arelt_data slot */
  97 struct areltdata
  98 {
  99   char * arch_header;           /* It's actually a string.  */
 100   bfd_size_type parsed_size;    /* Octets of filesize not including ar_hdr.  */
 101   bfd_size_type extra_size;     /* BSD4.4: extra bytes after the header.  */
 102   char *filename;               /* Null-terminated.  */
 103   file_ptr origin;              /* For element of a thin archive.  */
 104   void *parent_cache;           /* Where and how to find this member.  */
 105   file_ptr key;
 106 };
 107
 108 #define arelt_size(bfd) (((struct areltdata *)((bfd)->arelt_data))->parsed_size)
 109
 110 extern void *bfd_malloc
 111   (bfd_size_type) ATTRIBUTE_HIDDEN;
 112
 113 static inline char *
 114 bfd_strdup (const char *str)
 115 {
 116   size_t len = strlen (str) + 1;
 117   char *buf = bfd_malloc (len);
 118   if (buf != NULL)
 119     memcpy (buf, str, len);
 120   return buf;
 121 }
 122
 123 extern bfd * _bfd_create_empty_archive_element_shell
 124   (bfd *) ATTRIBUTE_HIDDEN;
 125 extern bfd * _bfd_look_for_bfd_in_cache
 126   (bfd *, file_ptr) ATTRIBUTE_HIDDEN;
 127 extern bool _bfd_add_bfd_to_archive_cache
 128   (bfd *, file_ptr, bfd *) ATTRIBUTE_HIDDEN;
 129 extern bool _bfd_generic_mkarchive
 130   (bfd *) ATTRIBUTE_HIDDEN;
 131 extern char *_bfd_append_relative_path
 132   (bfd *, char *) ATTRIBUTE_HIDDEN;
 133 extern bfd_cleanup bfd_generic_archive_p
 134   (bfd *) ATTRIBUTE_HIDDEN;
 135 extern bool bfd_slurp_armap
 136   (bfd *) ATTRIBUTE_HIDDEN;
 137 #define bfd_slurp_bsd_armap bfd_slurp_armap
 138 #define bfd_slurp_coff_armap bfd_slurp_armap
 139 extern bool _bfd_archive_64_bit_slurp_armap
 140   (bfd *) ATTRIBUTE_HIDDEN;
 141 extern bool _bfd_archive_64_bit_write_armap
 142   (bfd *, unsigned int, struct orl *, unsigned int, int) ATTRIBUTE_HIDDEN;
 143 #define _bfd_archive_64_bit_slurp_extended_name_table \
 144   _bfd_slurp_extended_name_table
 145 #define _bfd_archive_64_bit_construct_extended_name_table \
 146   _bfd_archive_coff_construct_extended_name_table
 147 #define _bfd_archive_64_bit_truncate_arname \
 148   bfd_dont_truncate_arname
 149 #define _bfd_archive_64_bit_read_ar_hdr \
 150   _bfd_generic_read_ar_hdr
 151 #define _bfd_archive_64_bit_write_ar_hdr \
 152   _bfd_generic_write_ar_hdr
 153 #define _bfd_archive_64_bit_openr_next_archived_file \
 154   bfd_generic_openr_next_archived_file
 155 #define _bfd_archive_64_bit_get_elt_at_index \
 156   _bfd_generic_get_elt_at_index
 157 #define _bfd_archive_64_bit_generic_stat_arch_elt \
 158   bfd_generic_stat_arch_elt
 159 #define _bfd_archive_64_bit_update_armap_timestamp _bfd_bool_bfd_true
 160
 161 extern bool _bfd_slurp_extended_name_table
 162   (bfd *) ATTRIBUTE_HIDDEN;
 163 extern bool _bfd_construct_extended_name_table
 164   (bfd *, bool, char **, bfd_size_type *) ATTRIBUTE_HIDDEN;
 165 extern bool _bfd_write_archive_contents
 166   (bfd *) ATTRIBUTE_HIDDEN;
 167 extern bool _bfd_compute_and_write_armap
 168   (bfd *, unsigned int) ATTRIBUTE_HIDDEN;
 169 extern bfd *_bfd_get_elt_at_filepos
 170   (bfd *, file_ptr, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 171 extern bfd *_bfd_generic_get_elt_at_index
 172   (bfd *, symindex) ATTRIBUTE_HIDDEN;
 173
 174 extern bool _bfd_bool_bfd_false
 175   (bfd *) ATTRIBUTE_HIDDEN;
 176 extern bool _bfd_bool_bfd_asymbol_false
 177   (bfd *, asymbol *) ATTRIBUTE_HIDDEN;
 178 extern bool _bfd_bool_bfd_false_error
 179   (bfd *) ATTRIBUTE_HIDDEN;
 180 extern bool _bfd_bool_bfd_link_false_error
 181   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 182 extern bool _bfd_bool_bfd_true
 183   (bfd *) ATTRIBUTE_HIDDEN;
 184 extern bool _bfd_bool_bfd_link_true
 185   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 186 extern bool _bfd_bool_bfd_bfd_true
 187   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 188 extern bool _bfd_bool_bfd_uint_true
 189   (bfd *, unsigned int) ATTRIBUTE_HIDDEN;
 190 extern bool _bfd_bool_bfd_asection_bfd_asection_true
 191   (bfd *, asection *, bfd *, asection *) ATTRIBUTE_HIDDEN;
 192 extern bool _bfd_bool_bfd_asymbol_bfd_asymbol_true
 193   (bfd *, asymbol *, bfd *, asymbol *) ATTRIBUTE_HIDDEN;
 194 extern bool _bfd_bool_bfd_ptr_true
 195   (bfd *, void *) ATTRIBUTE_HIDDEN;
 196 extern void *_bfd_ptr_bfd_null_error
 197   (bfd *) ATTRIBUTE_HIDDEN;
 198 extern int _bfd_int_bfd_0
 199   (bfd *) ATTRIBUTE_HIDDEN;
 200 extern unsigned int _bfd_uint_bfd_0
 201   (bfd *) ATTRIBUTE_HIDDEN;
 202 extern long _bfd_long_bfd_0
 203   (bfd *) ATTRIBUTE_HIDDEN;
 204 extern long _bfd_long_bfd_n1_error
 205   (bfd *) ATTRIBUTE_HIDDEN;
 206 extern void _bfd_void_bfd
 207   (bfd *) ATTRIBUTE_HIDDEN;
 208 extern void _bfd_void_bfd_link
 209   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 210 extern void _bfd_void_bfd_asection
 211   (bfd *, asection *) ATTRIBUTE_HIDDEN;
 212
 213 extern bfd_cleanup _bfd_dummy_target
 214   (bfd *) ATTRIBUTE_HIDDEN;
 215 #define _bfd_no_cleanup _bfd_void_bfd
 216
 217 extern void bfd_dont_truncate_arname
 218   (bfd *, const char *, char *) ATTRIBUTE_HIDDEN;
 219 extern void bfd_bsd_truncate_arname
 220   (bfd *, const char *, char *) ATTRIBUTE_HIDDEN;
 221 extern void bfd_gnu_truncate_arname
 222   (bfd *, const char *, char *) ATTRIBUTE_HIDDEN;
 223
 224 extern bool _bfd_bsd_write_armap
 225   (bfd *, unsigned int, struct orl *, unsigned int, int) ATTRIBUTE_HIDDEN;
 226
 227 extern bool _bfd_coff_write_armap
 228   (bfd *, unsigned int, struct orl *, unsigned int, int) ATTRIBUTE_HIDDEN;
 229
 230 extern void *_bfd_generic_read_ar_hdr
 231   (bfd *) ATTRIBUTE_HIDDEN;
 232 extern void _bfd_ar_spacepad
 233   (char *, size_t, const char *, long) ATTRIBUTE_HIDDEN;
 234 extern bool _bfd_ar_sizepad
 235   (char *, size_t, bfd_size_type) ATTRIBUTE_HIDDEN;
 236
 237 extern void *_bfd_generic_read_ar_hdr_mag
 238   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 239
 240 extern bool _bfd_generic_write_ar_hdr
 241   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 242
 243 extern bool _bfd_bsd44_write_ar_hdr
 244   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 245
 246 extern bfd * bfd_generic_openr_next_archived_file
 247   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 248
 249 extern int bfd_generic_stat_arch_elt
 250   (bfd *, struct stat *) ATTRIBUTE_HIDDEN;
 251
 252 #define _bfd_read_ar_hdr(abfd) \
 253         BFD_SEND (abfd, _bfd_read_ar_hdr_fn, (abfd))
 254 #define _bfd_write_ar_hdr(archive, abfd)         \
 255         BFD_SEND (abfd, _bfd_write_ar_hdr_fn, (archive, abfd))
 256 \f
 257 /* Generic routines to use for BFD_JUMP_TABLE_GENERIC.  Use
 258    BFD_JUMP_TABLE_GENERIC (_bfd_generic).  */
 259
 260 #define _bfd_generic_close_and_cleanup _bfd_archive_close_and_cleanup
 261 extern bool _bfd_archive_close_and_cleanup
 262   (bfd *) ATTRIBUTE_HIDDEN;
 263 extern void _bfd_unlink_from_archive_parent (bfd *) ATTRIBUTE_HIDDEN;
 264 #define _bfd_generic_bfd_free_cached_info _bfd_free_cached_info
 265 extern bool _bfd_generic_new_section_hook
 266   (bfd *, asection *) ATTRIBUTE_HIDDEN;
 267 extern bool _bfd_generic_get_section_contents
 268   (bfd *, asection *, void *, file_ptr, bfd_size_type) ATTRIBUTE_HIDDEN;
 269 extern bool _bfd_generic_get_section_contents_in_window
 270   (bfd *, asection *, bfd_window *, file_ptr, bfd_size_type) ATTRIBUTE_HIDDEN;
 271
 272 /* Generic routines to use for BFD_JUMP_TABLE_COPY.  Use
 273    BFD_JUMP_TABLE_COPY (_bfd_generic).  */
 274
 275 #define _bfd_generic_bfd_copy_private_bfd_data _bfd_bool_bfd_bfd_true
 276 #define _bfd_generic_bfd_merge_private_bfd_data \
 277   _bfd_bool_bfd_link_true
 278 #define _bfd_generic_bfd_set_private_flags _bfd_bool_bfd_uint_true
 279 #define _bfd_generic_bfd_copy_private_section_data \
 280   _bfd_bool_bfd_asection_bfd_asection_true
 281 #define _bfd_generic_bfd_copy_private_symbol_data \
 282   _bfd_bool_bfd_asymbol_bfd_asymbol_true
 283 #define _bfd_generic_bfd_copy_private_header_data _bfd_bool_bfd_bfd_true
 284 #define _bfd_generic_bfd_print_private_bfd_data _bfd_bool_bfd_ptr_true
 285
 286 extern bool _bfd_generic_init_private_section_data
 287   (bfd *, asection *, bfd *, asection *, struct bfd_link_info *)
 288   ATTRIBUTE_HIDDEN;
 289
 290 /* Routines to use for BFD_JUMP_TABLE_CORE when there is no core file
 291    support.  Use BFD_JUMP_TABLE_CORE (_bfd_nocore).  */
 292
 293 extern char *_bfd_nocore_core_file_failing_command
 294   (bfd *) ATTRIBUTE_HIDDEN;
 295 extern int _bfd_nocore_core_file_failing_signal
 296   (bfd *) ATTRIBUTE_HIDDEN;
 297 extern bool _bfd_nocore_core_file_matches_executable_p
 298   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 299 extern int _bfd_nocore_core_file_pid
 300   (bfd *) ATTRIBUTE_HIDDEN;
 301
 302 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE when there is no archive
 303    file support.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive).  */
 304
 305 #define _bfd_noarchive_slurp_armap _bfd_bool_bfd_false_error
 306 #define _bfd_noarchive_slurp_extended_name_table _bfd_bool_bfd_false_error
 307 extern bool _bfd_noarchive_construct_extended_name_table
 308   (bfd *, char **, bfd_size_type *, const char **) ATTRIBUTE_HIDDEN;
 309 extern void _bfd_noarchive_truncate_arname
 310   (bfd *, const char *, char *) ATTRIBUTE_HIDDEN;
 311 extern bool _bfd_noarchive_write_armap
 312   (bfd *, unsigned int, struct orl *, unsigned int, int) ATTRIBUTE_HIDDEN;
 313 #define _bfd_noarchive_read_ar_hdr _bfd_ptr_bfd_null_error
 314 extern bool _bfd_noarchive_write_ar_hdr
 315   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 316 extern bfd *
 317 _bfd_noarchive_openr_next_archived_file
 318   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 319 extern bfd * _bfd_noarchive_get_elt_at_index
 320   (bfd *, symindex) ATTRIBUTE_HIDDEN;
 321 #define _bfd_noarchive_generic_stat_arch_elt bfd_generic_stat_arch_elt
 322 #define _bfd_noarchive_update_armap_timestamp _bfd_bool_bfd_false_error
 323
 324 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD style
 325    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd).  */
 326
 327 #define _bfd_archive_bsd_slurp_armap bfd_slurp_bsd_armap
 328 #define _bfd_archive_bsd_slurp_extended_name_table \
 329   _bfd_slurp_extended_name_table
 330 extern bool _bfd_archive_bsd_construct_extended_name_table
 331   (bfd *, char **, bfd_size_type *, const char **) ATTRIBUTE_HIDDEN;
 332 #define _bfd_archive_bsd_truncate_arname bfd_bsd_truncate_arname
 333 #define _bfd_archive_bsd_write_armap _bfd_bsd_write_armap
 334 #define _bfd_archive_bsd_read_ar_hdr _bfd_generic_read_ar_hdr
 335 #define _bfd_archive_bsd_write_ar_hdr _bfd_generic_write_ar_hdr
 336 #define _bfd_archive_bsd_openr_next_archived_file \
 337   bfd_generic_openr_next_archived_file
 338 #define _bfd_archive_bsd_get_elt_at_index _bfd_generic_get_elt_at_index
 339 #define _bfd_archive_bsd_generic_stat_arch_elt \
 340   bfd_generic_stat_arch_elt
 341 extern bool _bfd_archive_bsd_update_armap_timestamp
 342   (bfd *) ATTRIBUTE_HIDDEN;
 343
 344 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get COFF style
 345    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff).  */
 346
 347 #define _bfd_archive_coff_slurp_armap bfd_slurp_coff_armap
 348 #define _bfd_archive_coff_slurp_extended_name_table \
 349   _bfd_slurp_extended_name_table
 350 extern bool _bfd_archive_coff_construct_extended_name_table
 351   (bfd *, char **, bfd_size_type *, const char **) ATTRIBUTE_HIDDEN;
 352 #define _bfd_archive_coff_truncate_arname bfd_dont_truncate_arname
 353 #define _bfd_archive_coff_write_armap _bfd_coff_write_armap
 354 #define _bfd_archive_coff_read_ar_hdr _bfd_generic_read_ar_hdr
 355 #define _bfd_archive_coff_write_ar_hdr _bfd_generic_write_ar_hdr
 356 #define _bfd_archive_coff_openr_next_archived_file \
 357   bfd_generic_openr_next_archived_file
 358 #define _bfd_archive_coff_get_elt_at_index _bfd_generic_get_elt_at_index
 359 #define _bfd_archive_coff_generic_stat_arch_elt \
 360   bfd_generic_stat_arch_elt
 361 #define _bfd_archive_coff_update_armap_timestamp _bfd_bool_bfd_true
 362
 363 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD4.4 style
 364    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd44).  */
 365
 366 #define _bfd_archive_bsd44_slurp_armap bfd_slurp_bsd_armap
 367 #define _bfd_archive_bsd44_slurp_extended_name_table \
 368   _bfd_slurp_extended_name_table
 369 extern bool _bfd_archive_bsd44_construct_extended_name_table
 370   (bfd *, char **, bfd_size_type *, const char **) ATTRIBUTE_HIDDEN;
 371 #define _bfd_archive_bsd44_truncate_arname bfd_bsd_truncate_arname
 372 #define _bfd_archive_bsd44_write_armap _bfd_bsd_write_armap
 373 #define _bfd_archive_bsd44_read_ar_hdr _bfd_generic_read_ar_hdr
 374 #define _bfd_archive_bsd44_write_ar_hdr _bfd_bsd44_write_ar_hdr
 375 #define _bfd_archive_bsd44_openr_next_archived_file \
 376   bfd_generic_openr_next_archived_file
 377 #define _bfd_archive_bsd44_get_elt_at_index _bfd_generic_get_elt_at_index
 378 #define _bfd_archive_bsd44_generic_stat_arch_elt \
 379   bfd_generic_stat_arch_elt
 380 #define _bfd_archive_bsd44_update_armap_timestamp \
 381   _bfd_archive_bsd_update_armap_timestamp
 382
 383 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get VMS style
 384    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_vms_lib).  Some of them
 385    are irrelevant.  */
 386
 387 extern bool _bfd_vms_lib_write_archive_contents
 388   (bfd *) ATTRIBUTE_HIDDEN;
 389 #define _bfd_vms_lib_slurp_armap _bfd_noarchive_slurp_armap
 390 #define _bfd_vms_lib_slurp_extended_name_table \
 391   _bfd_noarchive_slurp_extended_name_table
 392 #define _bfd_vms_lib_construct_extended_name_table \
 393   _bfd_noarchive_construct_extended_name_table
 394 #define _bfd_vms_lib_truncate_arname _bfd_noarchive_truncate_arname
 395 #define _bfd_vms_lib_write_armap _bfd_noarchive_write_armap
 396 #define _bfd_vms_lib_read_ar_hdr _bfd_noarchive_read_ar_hdr
 397 #define _bfd_vms_lib_write_ar_hdr _bfd_noarchive_write_ar_hdr
 398 extern bfd *_bfd_vms_lib_openr_next_archived_file
 399   (bfd *, bfd *) ATTRIBUTE_HIDDEN;
 400 extern bfd *_bfd_vms_lib_get_elt_at_index
 401   (bfd *, symindex) ATTRIBUTE_HIDDEN;
 402 extern int _bfd_vms_lib_generic_stat_arch_elt
 403   (bfd *, struct stat *) ATTRIBUTE_HIDDEN;
 404 #define _bfd_vms_lib_update_armap_timestamp _bfd_bool_bfd_true
 405
 406 /* Extra routines for VMS style archives.  */
 407
 408 extern symindex _bfd_vms_lib_find_symbol
 409   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 410 extern bfd *_bfd_vms_lib_get_imagelib_file
 411   (bfd *) ATTRIBUTE_HIDDEN;
 412 extern bfd_cleanup _bfd_vms_lib_alpha_archive_p
 413   (bfd *) ATTRIBUTE_HIDDEN;
 414 extern bfd_cleanup _bfd_vms_lib_ia64_archive_p
 415   (bfd *) ATTRIBUTE_HIDDEN;
 416 extern bool _bfd_vms_lib_alpha_mkarchive
 417   (bfd *) ATTRIBUTE_HIDDEN;
 418 extern bool _bfd_vms_lib_ia64_mkarchive
 419   (bfd *) ATTRIBUTE_HIDDEN;
 420
 421 /* Routines to use for BFD_JUMP_TABLE_SYMBOLS where there is no symbol
 422    support.  Use BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols).  */
 423
 424 #define _bfd_nosymbols_get_symtab_upper_bound _bfd_long_bfd_n1_error
 425 extern long _bfd_nosymbols_canonicalize_symtab
 426   (bfd *, asymbol **) ATTRIBUTE_HIDDEN;
 427 #define _bfd_nosymbols_make_empty_symbol _bfd_generic_make_empty_symbol
 428 extern void _bfd_nosymbols_print_symbol
 429   (bfd *, void *, asymbol *, bfd_print_symbol_type) ATTRIBUTE_HIDDEN;
 430 extern void _bfd_nosymbols_get_symbol_info
 431   (bfd *, asymbol *, symbol_info *) ATTRIBUTE_HIDDEN;
 432 extern const char * _bfd_nosymbols_get_symbol_version_string
 433   (bfd *, asymbol *, bool, bool *) ATTRIBUTE_HIDDEN;
 434 extern bool _bfd_nosymbols_bfd_is_local_label_name
 435   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 436 #define _bfd_nosymbols_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
 437 extern alent *_bfd_nosymbols_get_lineno
 438   (bfd *, asymbol *) ATTRIBUTE_HIDDEN;
 439 extern bool _bfd_nosymbols_find_nearest_line
 440   (bfd *, asymbol **, asection *, bfd_vma,
 441    const char **, const char **, unsigned int *, unsigned int *)
 442   ATTRIBUTE_HIDDEN;
 443 extern bool _bfd_nosymbols_find_nearest_line_with_alt
 444   (bfd *, const char *, asymbol **, asection *, bfd_vma,
 445    const char **, const char **, unsigned int *, unsigned int *)
 446   ATTRIBUTE_HIDDEN;
 447 extern bool _bfd_nosymbols_find_line
 448   (bfd *, asymbol **, asymbol *, const char **, unsigned int *)
 449   ATTRIBUTE_HIDDEN;
 450 extern bool _bfd_nosymbols_find_inliner_info
 451   (bfd *, const char **, const char **, unsigned int *) ATTRIBUTE_HIDDEN;
 452 extern asymbol *_bfd_nosymbols_bfd_make_debug_symbol
 453   (bfd *) ATTRIBUTE_HIDDEN;
 454 extern long _bfd_nosymbols_read_minisymbols
 455   (bfd *, bool, void **, unsigned int *) ATTRIBUTE_HIDDEN;
 456 extern asymbol *_bfd_nosymbols_minisymbol_to_symbol
 457   (bfd *, bool, const void *, asymbol *) ATTRIBUTE_HIDDEN;
 458
 459 /* Routines to use for BFD_JUMP_TABLE_RELOCS when there is no reloc
 460    support.  Use BFD_JUMP_TABLE_RELOCS (_bfd_norelocs).  */
 461
 462 extern long _bfd_norelocs_get_reloc_upper_bound
 463   (bfd *, asection *) ATTRIBUTE_HIDDEN;
 464 extern long _bfd_norelocs_canonicalize_reloc
 465   (bfd *, asection *, arelent **, asymbol **) ATTRIBUTE_HIDDEN;
 466 extern void _bfd_norelocs_set_reloc
 467   (bfd *, asection *, arelent **, unsigned int) ATTRIBUTE_HIDDEN;
 468 extern reloc_howto_type *_bfd_norelocs_bfd_reloc_type_lookup
 469   (bfd *, bfd_reloc_code_real_type) ATTRIBUTE_HIDDEN;
 470 extern reloc_howto_type *_bfd_norelocs_bfd_reloc_name_lookup
 471   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 472
 473 /* Routines to use for BFD_JUMP_TABLE_WRITE for targets which may not
 474    be written.  Use BFD_JUMP_TABLE_WRITE (_bfd_nowrite).  */
 475
 476 extern bool _bfd_nowrite_set_arch_mach
 477   (bfd *, enum bfd_architecture, unsigned long) ATTRIBUTE_HIDDEN;
 478 extern bool _bfd_nowrite_set_section_contents
 479   (bfd *, asection *, const void *, file_ptr, bfd_size_type) ATTRIBUTE_HIDDEN;
 480
 481 /* Generic routines to use for BFD_JUMP_TABLE_WRITE.  Use
 482    BFD_JUMP_TABLE_WRITE (_bfd_generic).  */
 483
 484 #define _bfd_generic_set_arch_mach bfd_default_set_arch_mach
 485 extern bool _bfd_generic_set_section_contents
 486   (bfd *, asection *, const void *, file_ptr, bfd_size_type) ATTRIBUTE_HIDDEN;
 487
 488 /* Routines to use for BFD_JUMP_TABLE_LINK for targets which do not
 489    support linking.  Use BFD_JUMP_TABLE_LINK (_bfd_nolink).  */
 490
 491 extern int _bfd_nolink_sizeof_headers
 492   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 493 extern bfd_byte *_bfd_nolink_bfd_get_relocated_section_contents
 494   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 495    bfd_byte *, bool, asymbol **) ATTRIBUTE_HIDDEN;
 496 extern bool _bfd_nolink_bfd_relax_section
 497   (bfd *, asection *, struct bfd_link_info *, bool *) ATTRIBUTE_HIDDEN;
 498 #define _bfd_nolink_bfd_gc_sections _bfd_bool_bfd_link_false_error
 499 extern bool _bfd_nolink_bfd_lookup_section_flags
 500   (struct bfd_link_info *, struct flag_info *, asection *) ATTRIBUTE_HIDDEN;
 501 #define _bfd_nolink_bfd_merge_sections _bfd_bool_bfd_link_false_error
 502 extern bool _bfd_nolink_bfd_is_group_section
 503   (bfd *, const asection *) ATTRIBUTE_HIDDEN;
 504 extern const char *_bfd_nolink_bfd_group_name
 505   (bfd *, const asection *) ATTRIBUTE_HIDDEN;
 506 extern bool _bfd_nolink_bfd_discard_group
 507   (bfd *, asection *) ATTRIBUTE_HIDDEN;
 508 extern struct bfd_link_hash_table *_bfd_nolink_bfd_link_hash_table_create
 509   (bfd *) ATTRIBUTE_HIDDEN;
 510 #define _bfd_nolink_bfd_link_add_symbols _bfd_bool_bfd_link_false_error
 511 extern void _bfd_nolink_bfd_link_just_syms
 512   (asection *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 513 extern void _bfd_nolink_bfd_copy_link_hash_symbol_type
 514   (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *)
 515   ATTRIBUTE_HIDDEN;
 516 #define _bfd_nolink_bfd_final_link _bfd_bool_bfd_link_false_error
 517 extern bool _bfd_nolink_bfd_link_split_section
 518   (bfd *, struct bfd_section *) ATTRIBUTE_HIDDEN;
 519 extern bool _bfd_nolink_section_already_linked
 520   (bfd *, asection *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 521 extern bool _bfd_nolink_bfd_define_common_symbol
 522   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *)
 523   ATTRIBUTE_HIDDEN;
 524 #define _bfd_nolink_bfd_link_hide_symbol \
 525   _bfd_generic_link_hide_symbol
 526 extern struct bfd_link_hash_entry *_bfd_nolink_bfd_define_start_stop
 527   (struct bfd_link_info *, const char *, asection *) ATTRIBUTE_HIDDEN;
 528 #define _bfd_nolink_bfd_link_check_relocs \
 529   _bfd_generic_link_check_relocs
 530
 531 /* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
 532    have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
 533    (_bfd_nodynamic).  */
 534
 535 #define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_long_bfd_n1_error
 536 #define _bfd_nodynamic_canonicalize_dynamic_symtab \
 537   _bfd_nosymbols_canonicalize_symtab
 538 extern long _bfd_nodynamic_get_synthetic_symtab
 539   (bfd *, long, asymbol **, long, asymbol **, asymbol **) ATTRIBUTE_HIDDEN;
 540 #define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_long_bfd_n1_error
 541 extern long _bfd_nodynamic_canonicalize_dynamic_reloc
 542   (bfd *, arelent **, asymbol **) ATTRIBUTE_HIDDEN;
 543 \f
 544 /* Generic routine to determine of the given symbol is a local
 545    label.  */
 546 extern bool bfd_generic_is_local_label_name
 547   (bfd *, const char *) ATTRIBUTE_HIDDEN;
 548
 549 /* Generic minisymbol routines.  */
 550 extern long _bfd_generic_read_minisymbols
 551   (bfd *, bool, void **, unsigned int *) ATTRIBUTE_HIDDEN;
 552 extern asymbol *_bfd_generic_minisymbol_to_symbol
 553   (bfd *, bool, const void *, asymbol *) ATTRIBUTE_HIDDEN;
 554
 555 /* Find the nearest line using .stab/.stabstr sections.  */
 556 extern bool _bfd_stab_section_find_nearest_line
 557   (bfd *, asymbol **, asection *, bfd_vma, bool *,
 558    const char **, const char **, unsigned int *, void **) ATTRIBUTE_HIDDEN;
 559
 560 /* Find the nearest line using DWARF 1 debugging information.  */
 561 extern bool _bfd_dwarf1_find_nearest_line
 562   (bfd *, asymbol **, asection *, bfd_vma,
 563    const char **, const char **, unsigned int *) ATTRIBUTE_HIDDEN;
 564
 565 /* Clean up the data used to handle DWARF 1 debugging information. */
 566 extern void _bfd_dwarf1_cleanup_debug_info
 567   (bfd *, void **) ATTRIBUTE_HIDDEN;
 568
 569 struct dwarf_debug_section
 570 {
 571   const char * uncompressed_name;
 572   const char * compressed_name;
 573 };
 574
 575 /* Map of uncompressed DWARF debug section name to compressed one.  It
 576    is terminated by NULL uncompressed_name.  */
 577
 578 extern const struct dwarf_debug_section dwarf_debug_sections[] ATTRIBUTE_HIDDEN;
 579
 580 /* Find the nearest line using DWARF 2 debugging information.  */
 581 extern int _bfd_dwarf2_find_nearest_line
 582   (bfd *, asymbol **, asymbol *, asection *, bfd_vma,
 583    const char **, const char **, unsigned int *, unsigned int *,
 584    const struct dwarf_debug_section *, void **) ATTRIBUTE_HIDDEN;
 585
 586 /* Find the nearest line using DWARF 2 debugging information, with
 587    the option of specifying a .gnu_debugaltlink file.  */
 588 extern int _bfd_dwarf2_find_nearest_line_with_alt
 589   (bfd *, const char *, 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 bias between DWARF addresses and real addresses.  */
 594 extern bfd_signed_vma _bfd_dwarf2_find_symbol_bias
 595   (asymbol **, void **) ATTRIBUTE_HIDDEN;
 596
 597 /* Find inliner info after calling bfd_find_nearest_line. */
 598 extern bool _bfd_dwarf2_find_inliner_info
 599   (bfd *, const char **, const char **, unsigned int *, void **)
 600   ATTRIBUTE_HIDDEN;
 601
 602 /* Read DWARF 2 debugging information. */
 603 extern bool _bfd_dwarf2_slurp_debug_info
 604   (bfd *, bfd *, const struct dwarf_debug_section *, asymbol **, void **,
 605    bool) ATTRIBUTE_HIDDEN;
 606
 607 /* Clean up the data used to handle DWARF 2 debugging information. */
 608 extern void _bfd_dwarf2_cleanup_debug_info
 609   (bfd *, void **) ATTRIBUTE_HIDDEN;
 610
 611 extern void _bfd_stab_cleanup
 612   (bfd *, void **) ATTRIBUTE_HIDDEN;
 613
 614 /* Create a new section entry.  */
 615 extern struct bfd_hash_entry *bfd_section_hash_newfunc
 616   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *)
 617   ATTRIBUTE_HIDDEN;
 618
 619 /* A routine to create entries for a bfd_link_hash_table.  */
 620 extern struct bfd_hash_entry *_bfd_link_hash_newfunc
 621   (struct bfd_hash_entry *entry, struct bfd_hash_table *table,
 622    const char *string) ATTRIBUTE_HIDDEN;
 623
 624 /* Initialize a bfd_link_hash_table.  */
 625 extern bool _bfd_link_hash_table_init
 626   (struct bfd_link_hash_table *, bfd *,
 627    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 628                                struct bfd_hash_table *,
 629                                const char *),
 630    unsigned int) ATTRIBUTE_HIDDEN;
 631
 632 /* Generic link hash table creation routine.  */
 633 extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
 634   (bfd *) ATTRIBUTE_HIDDEN;
 635
 636 /* Generic link hash table destruction routine.  */
 637 extern void _bfd_generic_link_hash_table_free
 638   (bfd *) ATTRIBUTE_HIDDEN;
 639
 640 /* Generic add symbol routine.  */
 641 extern bool _bfd_generic_link_add_symbols
 642   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 643
 644 /* Generic archive add symbol routine.  */
 645 extern bool _bfd_generic_link_add_archive_symbols
 646   (bfd *, struct bfd_link_info *,
 647    bool (*) (bfd *, struct bfd_link_info *,
 648                     struct bfd_link_hash_entry *, const char *,
 649                     bool *)) ATTRIBUTE_HIDDEN;
 650
 651 /* Forward declaration to avoid prototype errors.  */
 652 typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
 653
 654 /* Generic routine to add a single symbol.  */
 655 extern bool _bfd_generic_link_add_one_symbol
 656   (struct bfd_link_info *, bfd *, const char *name, flagword,
 657    asection *, bfd_vma, const char *, bool copy,
 658    bool constructor, struct bfd_link_hash_entry **) ATTRIBUTE_HIDDEN;
 659
 660 /* Generic routine to mark section as supplying symbols only.  */
 661 extern void _bfd_generic_link_just_syms
 662   (asection *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 663
 664 /* Generic routine that does nothing.  */
 665 extern void _bfd_generic_copy_link_hash_symbol_type
 666   (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *)
 667   ATTRIBUTE_HIDDEN;
 668
 669 /* Generic link routine.  */
 670 extern bool _bfd_generic_final_link
 671   (bfd *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 672
 673 extern bool _bfd_generic_link_split_section
 674   (bfd *, struct bfd_section *) ATTRIBUTE_HIDDEN;
 675
 676 extern bool _bfd_generic_section_already_linked
 677   (bfd *, asection *, struct bfd_link_info *) ATTRIBUTE_HIDDEN;
 678
 679 /* Generic reloc_link_order processing routine.  */
 680 extern bool _bfd_generic_reloc_link_order
 681   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *)
 682   ATTRIBUTE_HIDDEN;
 683
 684 /* Default link order processing routine.  */
 685 extern bool _bfd_default_link_order
 686   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *)
 687   ATTRIBUTE_HIDDEN;
 688
 689 /* Count the number of reloc entries in a link order list.  */
 690 extern unsigned int _bfd_count_link_order_relocs
 691   (struct bfd_link_order *) ATTRIBUTE_HIDDEN;
 692
 693 /* Final link relocation routine.  */
 694 extern bfd_reloc_status_type _bfd_final_link_relocate
 695   (reloc_howto_type *, bfd *, asection *, bfd_byte *,
 696    bfd_vma, bfd_vma, bfd_vma) ATTRIBUTE_HIDDEN;
 697
 698 /* Relocate a particular location by a howto and a value.  */
 699 extern bfd_reloc_status_type _bfd_relocate_contents
 700   (reloc_howto_type *, bfd *, bfd_vma, bfd_byte *) ATTRIBUTE_HIDDEN;
 701
 702 /* Clear a given location using a given howto.  */
 703 extern bfd_reloc_status_type _bfd_clear_contents
 704   (reloc_howto_type *, bfd *, asection *, bfd_byte *, bfd_vma) ATTRIBUTE_HIDDEN;
 705
 706 /* Register a SEC_MERGE section as a candidate for merging.  */
 707
 708 extern bool _bfd_add_merge_section
 709   (bfd *, void **, asection *, void **) ATTRIBUTE_HIDDEN;
 710
 711 /* Attempt to merge SEC_MERGE sections.  */
 712
 713 extern bool _bfd_merge_sections
 714   (bfd *, struct bfd_link_info *, void *, void (*) (bfd *, asection *))
 715   ATTRIBUTE_HIDDEN;
 716
 717 /* Write out a merged section.  */
 718
 719 extern bool _bfd_write_merged_section
 720   (bfd *, asection *, void *) ATTRIBUTE_HIDDEN;
 721
 722 /* Find an offset within a modified SEC_MERGE section.  */
 723
 724 extern bfd_vma _bfd_merged_section_offset
 725   (bfd *, asection **, void *, bfd_vma) ATTRIBUTE_HIDDEN;
 726
 727 /* Tidy up when done.  */
 728
 729 extern void _bfd_merge_sections_free (void *) ATTRIBUTE_HIDDEN;
 730
 731 /* Macros to tell if bfds are read or write enabled.
 732
 733    Note that bfds open for read may be scribbled into if the fd passed
 734    to bfd_fdopenr is actually open both for read and write
 735    simultaneously.  However an output bfd will never be open for
 736    read.  Therefore sometimes you want to check bfd_read_p or
 737    !bfd_read_p, and only sometimes bfd_write_p.
 738 */
 739
 740 #define bfd_read_p(abfd) \
 741   ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
 742 #define bfd_write_p(abfd) \
 743   ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
 744
 745 extern void bfd_assert
 746   (const char*,int) ATTRIBUTE_HIDDEN;
 747
 748 #define BFD_ASSERT(x) \
 749   do { if (!(x)) bfd_assert(__FILE__,__LINE__); } while (0)
 750
 751 #define BFD_FAIL() \
 752   do { bfd_assert(__FILE__,__LINE__); } while (0)
 753
 754 extern void _bfd_abort
 755   (const char *, int, const char *) ATTRIBUTE_NORETURN ATTRIBUTE_HIDDEN;
 756
 757 /* if gcc >= 2.6, we can give a function name, too */
 758 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
 759 #define __PRETTY_FUNCTION__  ((char *) NULL)
 760 #endif
 761
 762 #undef abort
 763 #define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
 764
 765 /* Manipulate a system FILE but using BFD's "file_ptr", rather than
 766    the system "off_t" or "off64_t", as the offset.  */
 767 extern file_ptr _bfd_real_ftell
 768   (FILE *) ATTRIBUTE_HIDDEN;
 769 extern int _bfd_real_fseek
 770   (FILE *, file_ptr, int) ATTRIBUTE_HIDDEN;
 771 extern FILE *_bfd_real_fopen
 772   (const char *, const char *) ATTRIBUTE_HIDDEN;
 773
 774 /* List of supported target vectors, and the default vector (if
 775    bfd_default_vector[0] is NULL, there is no default).  */
 776 extern const bfd_target *const *const bfd_target_vector ATTRIBUTE_HIDDEN;
 777 extern const bfd_target *bfd_default_vector[] ATTRIBUTE_HIDDEN;
 778
 779 /* List of associated target vectors.  */
 780 extern const bfd_target *const *const bfd_associated_vector ATTRIBUTE_HIDDEN;
 781
 782 /* Functions shared by the ECOFF and MIPS ELF backends, which have no
 783    other common header files.  */
 784
 785 struct ecoff_debug_info;
 786 struct ecoff_debug_swap;
 787 struct ecoff_extr;
 788 struct ecoff_find_line;
 789
 790 extern void _bfd_ecoff_free_ecoff_debug_info
 791   (struct ecoff_debug_info *debug);
 792 extern bool _bfd_ecoff_locate_line
 793   (bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
 794    const struct ecoff_debug_swap * const, struct ecoff_find_line *,
 795    const char **, const char **, unsigned int *) ATTRIBUTE_HIDDEN;
 796 extern bool _bfd_ecoff_get_accumulated_pdr
 797   (void *, bfd_byte *) ATTRIBUTE_HIDDEN;
 798 extern bool _bfd_ecoff_get_accumulated_sym
 799   (void *, bfd_byte *) ATTRIBUTE_HIDDEN;
 800 extern bool _bfd_ecoff_get_accumulated_ss
 801   (void *, bfd_byte *) ATTRIBUTE_HIDDEN;
 802
 803 extern bfd_vma _bfd_get_gp_value
 804   (bfd *) ATTRIBUTE_HIDDEN;
 805 extern void _bfd_set_gp_value
 806   (bfd *, bfd_vma) ATTRIBUTE_HIDDEN;
 807
 808 /* Function shared by the COFF and ELF SH backends, which have no
 809    other common header files.  */
 810
 811 #ifndef _bfd_sh_align_load_span
 812 extern bool _bfd_sh_align_load_span
 813   (bfd *, asection *, bfd_byte *,
 814    bool (*) (bfd *, asection *, void *, bfd_byte *, bfd_vma),
 815    void *, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, bool *) ATTRIBUTE_HIDDEN;
 816 #endif
 817
 818 /* This is the shape of the elements inside the already_linked hash
 819    table. It maps a name onto a list of already_linked elements with
 820    the same name.  */
 821
 822 struct bfd_section_already_linked_hash_entry
 823 {
 824   struct bfd_hash_entry root;
 825   struct bfd_section_already_linked *entry;
 826 };
 827
 828 struct bfd_section_already_linked
 829 {
 830   struct bfd_section_already_linked *next;
 831   asection *sec;
 832 };
 833
 834 extern struct bfd_section_already_linked_hash_entry *
 835   bfd_section_already_linked_table_lookup (const char *) ATTRIBUTE_HIDDEN;
 836 extern bool bfd_section_already_linked_table_insert
 837   (struct bfd_section_already_linked_hash_entry *, asection *)
 838   ATTRIBUTE_HIDDEN;
 839 extern void bfd_section_already_linked_table_traverse
 840   (bool (*) (struct bfd_section_already_linked_hash_entry *,
 841                     void *), void *) ATTRIBUTE_HIDDEN;
 842
 843 extern bfd_vma _bfd_read_unsigned_leb128
 844   (bfd *, bfd_byte *, unsigned int *) ATTRIBUTE_HIDDEN;
 845 extern bfd_signed_vma _bfd_read_signed_leb128
 846   (bfd *, bfd_byte *, unsigned int *) ATTRIBUTE_HIDDEN;
 847 extern bfd_vma _bfd_safe_read_leb128
 848   (bfd *, bfd_byte **, bool, const bfd_byte * const) ATTRIBUTE_HIDDEN;
 849 extern bfd_byte * _bfd_write_unsigned_leb128
 850   (bfd_byte *, bfd_byte *, bfd_vma) ATTRIBUTE_HIDDEN;
 851
 852 extern struct bfd_link_info *_bfd_get_link_info (bfd *);
 853
 854 extern bool _bfd_link_keep_memory (struct bfd_link_info *)
 855   ATTRIBUTE_HIDDEN;
 856
 857 #if GCC_VERSION >= 7000
 858 #define _bfd_mul_overflow(a, b, res) __builtin_mul_overflow (a, b, res)
 859 #else
 860 /* Assumes unsigned values.  Careful!  Args evaluated multiple times.  */
 861 #define _bfd_mul_overflow(a, b, res) \
 862   ((*res) = (a), (*res) *= (b), (b) != 0 && (*res) / (b) != (a))
 863 #endif
 864
 865 #ifdef __GNUC__
 866 #define _bfd_constant_p(v) __builtin_constant_p (v)
 867 #else
 868 #define _bfd_constant_p(v) 0
 869 #endif
 870
 871 static inline void *
 872 _bfd_alloc_and_read (bfd *abfd, bfd_size_type asize, bfd_size_type rsize)
 873 {
 874   void *mem;
 875   if (!_bfd_constant_p (rsize))
 876     {
 877       ufile_ptr filesize = bfd_get_file_size (abfd);
 878       if (filesize != 0 && rsize > filesize)
 879         {
 880           bfd_set_error (bfd_error_file_truncated);
 881           return NULL;
 882         }
 883     }
 884   mem = bfd_alloc (abfd, asize);
 885   if (mem != NULL)
 886     {
 887       if (bfd_bread (mem, rsize, abfd) == rsize)
 888         return mem;
 889       bfd_release (abfd, mem);
 890     }
 891   return NULL;
 892 }
 893
 894 static inline void *
 895 _bfd_malloc_and_read (bfd *abfd, bfd_size_type asize, bfd_size_type rsize)
 896 {
 897   void *mem;
 898   if (!_bfd_constant_p (rsize))
 899     {
 900       ufile_ptr filesize = bfd_get_file_size (abfd);
 901       if (filesize != 0 && rsize > filesize)
 902         {
 903           bfd_set_error (bfd_error_file_truncated);
 904           return NULL;
 905         }
 906     }
 907   mem = bfd_malloc (asize);
 908   if (mem != NULL)
 909     {
 910       if (bfd_bread (mem, rsize, abfd) == rsize)
 911         return mem;
 912       free (mem);
 913     }
 914   return NULL;
 915 }