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) 1990-2016 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 #include "hashtab.h"
  26
  27 #ifdef __cplusplus
  28 extern "C" {
  29 #endif
  30
  31 /* Align an address upward to a boundary, expressed as a number of bytes.
  32    E.g. align to an 8-byte boundary with argument of 8.  Take care never
  33    to wrap around if the address is within boundary-1 of the end of the
  34    address space.  */
  35 #define BFD_ALIGN(this, boundary)                                         \
  36   ((((bfd_vma) (this) + (boundary) - 1) >= (bfd_vma) (this))              \
  37    ? (((bfd_vma) (this) + ((boundary) - 1)) & ~ (bfd_vma) ((boundary)-1)) \
  38    : ~ (bfd_vma) 0)
  39
  40 /* If you want to read and write large blocks, you might want to do it
  41    in quanta of this amount */
  42 #define DEFAULT_BUFFERSIZE 8192
  43
  44 /* Set a tdata field.  Can't use the other macros for this, since they
  45    do casts, and casting to the left of assignment isn't portable.  */
  46 #define set_tdata(bfd, v) ((bfd)->tdata.any = (v))
  47
  48 /* If BFD_IN_MEMORY is set for a BFD, then the iostream fields points
  49    to an instance of this structure.  */
  50
  51 struct bfd_in_memory
  52 {
  53   /* Size of buffer.  */
  54   bfd_size_type size;
  55   /* Buffer holding contents of BFD.  */
  56   bfd_byte *buffer;
  57 };
  58
  59 struct section_hash_entry
  60 {
  61   struct bfd_hash_entry root;
  62   asection section;
  63 };
  64
  65 /* tdata for an archive.  For an input archive, cache
  66    needs to be free()'d.  For an output archive, symdefs do.  */
  67
  68 struct artdata
  69 {
  70   file_ptr first_file_filepos;
  71   /* Speed up searching the armap */
  72   htab_t cache;
  73   bfd *archive_head;            /* Only interesting in output routines.  */
  74   carsym *symdefs;              /* The symdef entries.  */
  75   symindex symdef_count;        /* How many there are.  */
  76   char *extended_names;         /* Clever intel extension.  */
  77   bfd_size_type extended_names_size; /* Size of extended names.  */
  78   /* When more compilers are standard C, this can be a time_t.  */
  79   long  armap_timestamp;        /* Timestamp value written into armap.
  80                                    This is used for BSD archives to check
  81                                    that the timestamp is recent enough
  82                                    for the BSD linker to not complain,
  83                                    just before we finish writing an
  84                                    archive.  */
  85   file_ptr armap_datepos;       /* Position within archive to seek to
  86                                    rewrite the date field.  */
  87   void *tdata;                  /* Backend specific information.  */
  88 };
  89
  90 #define bfd_ardata(bfd) ((bfd)->tdata.aout_ar_data)
  91
  92 /* Goes in bfd's arelt_data slot */
  93 struct areltdata
  94 {
  95   char * arch_header;           /* It's actually a string.  */
  96   bfd_size_type parsed_size;    /* Octets of filesize not including ar_hdr.  */
  97   bfd_size_type extra_size;     /* BSD4.4: extra bytes after the header.  */
  98   char *filename;               /* Null-terminated.  */
  99   file_ptr origin;              /* For element of a thin archive.  */
 100   void *parent_cache;           /* Where and how to find this member.  */
 101   file_ptr key;
 102 };
 103
 104 #define arelt_size(bfd) (((struct areltdata *)((bfd)->arelt_data))->parsed_size)
 105
 106 extern void *bfd_malloc
 107   (bfd_size_type);
 108 extern void *bfd_realloc
 109   (void *, bfd_size_type);
 110 extern void *bfd_realloc_or_free
 111   (void *, bfd_size_type);
 112 extern void *bfd_zmalloc
 113   (bfd_size_type);
 114 extern void *bfd_malloc2
 115   (bfd_size_type, bfd_size_type);
 116 extern void *bfd_realloc2
 117   (void *, bfd_size_type, bfd_size_type);
 118 extern void *bfd_zmalloc2
 119   (bfd_size_type, bfd_size_type);
 120
 121 extern void _bfd_default_error_handler (const char *s, ...);
 122 extern bfd_error_handler_type _bfd_error_handler;
 123 extern bfd_assert_handler_type _bfd_assert_handler;
 124
 125 /* These routines allocate and free things on the BFD's objalloc.  */
 126
 127 extern void *bfd_alloc2
 128   (bfd *, bfd_size_type, bfd_size_type);
 129 extern void *bfd_zalloc2
 130   (bfd *, bfd_size_type, bfd_size_type);
 131 extern void bfd_release
 132   (bfd *, void *);
 133
 134 bfd * _bfd_create_empty_archive_element_shell
 135   (bfd *obfd);
 136 bfd * _bfd_look_for_bfd_in_cache
 137   (bfd *, file_ptr);
 138 bfd_boolean _bfd_add_bfd_to_archive_cache
 139   (bfd *, file_ptr, bfd *);
 140 bfd_boolean _bfd_generic_mkarchive
 141   (bfd *abfd);
 142 char *_bfd_append_relative_path
 143   (bfd *arch, char *elt_name);
 144 const bfd_target *bfd_generic_archive_p
 145   (bfd *abfd);
 146 bfd_boolean bfd_slurp_armap
 147   (bfd *abfd);
 148 bfd_boolean bfd_slurp_bsd_armap_f2
 149   (bfd *abfd);
 150 #define bfd_slurp_bsd_armap bfd_slurp_armap
 151 #define bfd_slurp_coff_armap bfd_slurp_armap
 152 bfd_boolean _bfd_archive_64_bit_slurp_armap
 153   (bfd *);
 154 bfd_boolean _bfd_archive_64_bit_write_armap
 155   (bfd *, unsigned int, struct orl *, unsigned int, int);
 156 #define _bfd_archive_64_bit_slurp_extended_name_table \
 157   _bfd_slurp_extended_name_table
 158 #define _bfd_archive_64_bit_construct_extended_name_table \
 159   _bfd_archive_coff_construct_extended_name_table
 160 #define _bfd_archive_64_bit_truncate_arname \
 161   bfd_dont_truncate_arname
 162 #define _bfd_archive_64_bit_read_ar_hdr \
 163   _bfd_generic_read_ar_hdr
 164 #define _bfd_archive_64_bit_write_ar_hdr \
 165   _bfd_generic_write_ar_hdr
 166 #define _bfd_archive_64_bit_openr_next_archived_file \
 167   bfd_generic_openr_next_archived_file
 168 #define _bfd_archive_64_bit_get_elt_at_index \
 169   _bfd_generic_get_elt_at_index
 170 #define _bfd_archive_64_bit_generic_stat_arch_elt \
 171   bfd_generic_stat_arch_elt
 172 #define _bfd_archive_64_bit_update_armap_timestamp \
 173   bfd_true
 174
 175 bfd_boolean _bfd_slurp_extended_name_table
 176   (bfd *abfd);
 177 extern bfd_boolean _bfd_construct_extended_name_table
 178   (bfd *, bfd_boolean, char **, bfd_size_type *);
 179 bfd_boolean _bfd_write_archive_contents
 180   (bfd *abfd);
 181 bfd_boolean _bfd_compute_and_write_armap
 182   (bfd *, unsigned int elength);
 183 bfd *_bfd_get_elt_at_filepos
 184   (bfd *archive, file_ptr filepos);
 185 extern bfd *_bfd_generic_get_elt_at_index
 186   (bfd *, symindex);
 187 bfd * _bfd_new_bfd
 188   (void);
 189 bfd_boolean _bfd_free_cached_info
 190   (bfd *);
 191
 192 bfd_boolean bfd_false
 193   (bfd *ignore);
 194 bfd_boolean bfd_true
 195   (bfd *ignore);
 196 void *bfd_nullvoidptr
 197   (bfd *ignore);
 198 int bfd_0
 199   (bfd *ignore);
 200 unsigned int bfd_0u
 201   (bfd *ignore);
 202 long bfd_0l
 203   (bfd *ignore);
 204 long _bfd_n1
 205   (bfd *ignore);
 206 void bfd_void
 207   (bfd *ignore);
 208
 209 bfd *_bfd_new_bfd_contained_in
 210   (bfd *);
 211 const bfd_target *_bfd_dummy_target
 212   (bfd *abfd);
 213
 214 void bfd_dont_truncate_arname
 215   (bfd *abfd, const char *filename, char *hdr);
 216 void bfd_bsd_truncate_arname
 217   (bfd *abfd, const char *filename, char *hdr);
 218 void bfd_gnu_truncate_arname
 219   (bfd *abfd, const char *filename, char *hdr);
 220
 221 bfd_boolean bsd_write_armap
 222   (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
 223    int stridx);
 224
 225 bfd_boolean coff_write_armap
 226   (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
 227    int stridx);
 228
 229 extern void *_bfd_generic_read_ar_hdr
 230   (bfd *);
 231 extern void _bfd_ar_spacepad
 232   (char *, size_t, const char *, long);
 233 extern bfd_boolean _bfd_ar_sizepad
 234   (char *, size_t, bfd_size_type);
 235
 236 extern void *_bfd_generic_read_ar_hdr_mag
 237   (bfd *, const char *);
 238
 239 extern bfd_boolean _bfd_generic_write_ar_hdr
 240   (bfd *, bfd *);
 241
 242 extern bfd_boolean _bfd_bsd44_write_ar_hdr
 243   (bfd *, bfd *);
 244
 245 bfd * bfd_generic_openr_next_archived_file
 246   (bfd *archive, bfd *last_file);
 247
 248 int bfd_generic_stat_arch_elt
 249   (bfd *, struct stat *);
 250
 251 #define _bfd_read_ar_hdr(abfd) \
 252   BFD_SEND (abfd, _bfd_read_ar_hdr_fn, (abfd))
 253 #define _bfd_write_ar_hdr(archive, abfd)         \
 254   BFD_SEND (abfd, _bfd_write_ar_hdr_fn, (archive, abfd))
 255 \f
 256 /* Generic routines to use for BFD_JUMP_TABLE_GENERIC.  Use
 257    BFD_JUMP_TABLE_GENERIC (_bfd_generic).  */
 258
 259 #define _bfd_generic_close_and_cleanup _bfd_archive_close_and_cleanup
 260 extern bfd_boolean _bfd_archive_close_and_cleanup
 261   (bfd *);
 262 #define _bfd_generic_bfd_free_cached_info bfd_true
 263 extern bfd_boolean _bfd_generic_new_section_hook
 264   (bfd *, asection *);
 265 extern bfd_boolean _bfd_generic_get_section_contents
 266   (bfd *, asection *, void *, file_ptr, bfd_size_type);
 267 extern bfd_boolean _bfd_generic_get_section_contents_in_window
 268   (bfd *, asection *, bfd_window *, file_ptr, bfd_size_type);
 269
 270 /* Generic routines to use for BFD_JUMP_TABLE_COPY.  Use
 271    BFD_JUMP_TABLE_COPY (_bfd_generic).  */
 272
 273 #define _bfd_generic_bfd_copy_private_bfd_data \
 274   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 275 #define _bfd_generic_bfd_merge_private_bfd_data \
 276   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 277 #define _bfd_generic_bfd_set_private_flags \
 278   ((bfd_boolean (*) (bfd *, flagword)) bfd_true)
 279 #define _bfd_generic_bfd_copy_private_section_data \
 280   ((bfd_boolean (*) (bfd *, asection *, bfd *, asection *)) bfd_true)
 281 #define _bfd_generic_bfd_copy_private_symbol_data \
 282   ((bfd_boolean (*) (bfd *, asymbol *, bfd *, asymbol *)) bfd_true)
 283 #define _bfd_generic_bfd_copy_private_header_data \
 284   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 285 #define _bfd_generic_bfd_print_private_bfd_data \
 286   ((bfd_boolean (*) (bfd *, void *)) bfd_true)
 287
 288 extern bfd_boolean _bfd_generic_init_private_section_data
 289   (bfd *, asection *, bfd *, asection *, struct bfd_link_info *);
 290
 291 /* Routines to use for BFD_JUMP_TABLE_CORE when there is no core file
 292    support.  Use BFD_JUMP_TABLE_CORE (_bfd_nocore).  */
 293
 294 extern char *_bfd_nocore_core_file_failing_command
 295   (bfd *);
 296 extern int _bfd_nocore_core_file_failing_signal
 297   (bfd *);
 298 extern bfd_boolean _bfd_nocore_core_file_matches_executable_p
 299   (bfd *, bfd *);
 300 extern int _bfd_nocore_core_file_pid
 301   (bfd *);
 302
 303 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE when there is no archive
 304    file support.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive).  */
 305
 306 #define _bfd_noarchive_slurp_armap bfd_false
 307 #define _bfd_noarchive_slurp_extended_name_table bfd_false
 308 #define _bfd_noarchive_construct_extended_name_table \
 309   ((bfd_boolean (*) (bfd *, char **, bfd_size_type *, const char **)) \
 310    bfd_false)
 311 #define _bfd_noarchive_truncate_arname \
 312   ((void (*) (bfd *, const char *, char *)) bfd_void)
 313 #define _bfd_noarchive_write_armap \
 314   ((bfd_boolean (*) (bfd *, unsigned int, struct orl *, unsigned int, int)) \
 315    bfd_false)
 316 #define _bfd_noarchive_read_ar_hdr bfd_nullvoidptr
 317 #define _bfd_noarchive_write_ar_hdr \
 318   ((bfd_boolean (*) (bfd *, bfd *)) bfd_false)
 319 #define _bfd_noarchive_openr_next_archived_file \
 320   ((bfd *(*) (bfd *, bfd *)) bfd_nullvoidptr)
 321 #define _bfd_noarchive_get_elt_at_index \
 322   ((bfd *(*) (bfd *, symindex)) bfd_nullvoidptr)
 323 #define _bfd_noarchive_generic_stat_arch_elt bfd_generic_stat_arch_elt
 324 #define _bfd_noarchive_update_armap_timestamp bfd_false
 325
 326 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD style
 327    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd).  */
 328
 329 #define _bfd_archive_bsd_slurp_armap bfd_slurp_bsd_armap
 330 #define _bfd_archive_bsd_slurp_extended_name_table \
 331   _bfd_slurp_extended_name_table
 332 extern bfd_boolean _bfd_archive_bsd_construct_extended_name_table
 333   (bfd *, char **, bfd_size_type *, const char **);
 334 #define _bfd_archive_bsd_truncate_arname bfd_bsd_truncate_arname
 335 #define _bfd_archive_bsd_write_armap bsd_write_armap
 336 #define _bfd_archive_bsd_read_ar_hdr _bfd_generic_read_ar_hdr
 337 #define _bfd_archive_bsd_write_ar_hdr _bfd_generic_write_ar_hdr
 338 #define _bfd_archive_bsd_openr_next_archived_file \
 339   bfd_generic_openr_next_archived_file
 340 #define _bfd_archive_bsd_get_elt_at_index _bfd_generic_get_elt_at_index
 341 #define _bfd_archive_bsd_generic_stat_arch_elt \
 342   bfd_generic_stat_arch_elt
 343 extern bfd_boolean _bfd_archive_bsd_update_armap_timestamp
 344   (bfd *);
 345
 346 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get COFF style
 347    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff).  */
 348
 349 #define _bfd_archive_coff_slurp_armap bfd_slurp_coff_armap
 350 #define _bfd_archive_coff_slurp_extended_name_table \
 351   _bfd_slurp_extended_name_table
 352 extern bfd_boolean _bfd_archive_coff_construct_extended_name_table
 353   (bfd *, char **, bfd_size_type *, const char **);
 354 #define _bfd_archive_coff_truncate_arname bfd_dont_truncate_arname
 355 #define _bfd_archive_coff_write_armap coff_write_armap
 356 #define _bfd_archive_coff_read_ar_hdr _bfd_generic_read_ar_hdr
 357 #define _bfd_archive_coff_write_ar_hdr _bfd_generic_write_ar_hdr
 358 #define _bfd_archive_coff_openr_next_archived_file \
 359   bfd_generic_openr_next_archived_file
 360 #define _bfd_archive_coff_get_elt_at_index _bfd_generic_get_elt_at_index
 361 #define _bfd_archive_coff_generic_stat_arch_elt \
 362   bfd_generic_stat_arch_elt
 363 #define _bfd_archive_coff_update_armap_timestamp bfd_true
 364
 365 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD4.4 style
 366    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd44).  */
 367
 368 #define _bfd_archive_bsd44_slurp_armap bfd_slurp_bsd_armap
 369 #define _bfd_archive_bsd44_slurp_extended_name_table \
 370   _bfd_slurp_extended_name_table
 371 extern bfd_boolean _bfd_archive_bsd44_construct_extended_name_table
 372   (bfd *, char **, bfd_size_type *, const char **);
 373 #define _bfd_archive_bsd44_truncate_arname bfd_bsd_truncate_arname
 374 #define _bfd_archive_bsd44_write_armap bsd_write_armap
 375 #define _bfd_archive_bsd44_read_ar_hdr _bfd_generic_read_ar_hdr
 376 #define _bfd_archive_bsd44_write_ar_hdr _bfd_bsd44_write_ar_hdr
 377 #define _bfd_archive_bsd44_openr_next_archived_file \
 378   bfd_generic_openr_next_archived_file
 379 #define _bfd_archive_bsd44_get_elt_at_index _bfd_generic_get_elt_at_index
 380 #define _bfd_archive_bsd44_generic_stat_arch_elt \
 381   bfd_generic_stat_arch_elt
 382 #define _bfd_archive_bsd44_update_armap_timestamp \
 383   _bfd_archive_bsd_update_armap_timestamp
 384
 385 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get VMS style
 386    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_vms_lib).  Some of them
 387    are irrelevant and never called, so defined as NULL.  */
 388
 389 extern bfd_boolean _bfd_vms_lib_write_archive_contents (bfd *arch);
 390 #define _bfd_vms_lib_slurp_armap NULL
 391 #define _bfd_vms_lib_slurp_extended_name_table NULL
 392 #define _bfd_vms_lib_construct_extended_name_table NULL
 393 #define _bfd_vms_lib_truncate_arname NULL
 394 #define _bfd_vms_lib_write_armap NULL
 395 #define _bfd_vms_lib_read_ar_hdr NULL
 396 #define _bfd_vms_lib_write_ar_hdr NULL
 397 extern bfd *_bfd_vms_lib_openr_next_archived_file (bfd *, bfd *);
 398 extern bfd *_bfd_vms_lib_get_elt_at_index (bfd *, symindex);
 399 extern int _bfd_vms_lib_generic_stat_arch_elt (bfd *, struct stat *);
 400 #define _bfd_vms_lib_update_armap_timestamp bfd_true
 401
 402 /* Extra routines for VMS style archives.  */
 403
 404 extern symindex _bfd_vms_lib_find_symbol (bfd *, const char *);
 405 extern bfd *_bfd_vms_lib_get_imagelib_file (bfd *);
 406 extern const bfd_target *_bfd_vms_lib_alpha_archive_p (bfd *abfd);
 407 extern const bfd_target *_bfd_vms_lib_ia64_archive_p (bfd *abfd);
 408 extern bfd_boolean _bfd_vms_lib_alpha_mkarchive (bfd *abfd);
 409 extern bfd_boolean _bfd_vms_lib_ia64_mkarchive (bfd *abfd);
 410
 411 /* Routines to use for BFD_JUMP_TABLE_SYMBOLS where there is no symbol
 412    support.  Use BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols).  */
 413
 414 #define _bfd_nosymbols_get_symtab_upper_bound _bfd_n1
 415 #define _bfd_nosymbols_canonicalize_symtab \
 416   ((long (*) (bfd *, asymbol **)) _bfd_n1)
 417 #define _bfd_nosymbols_make_empty_symbol _bfd_generic_make_empty_symbol
 418 #define _bfd_nosymbols_print_symbol \
 419   ((void (*) (bfd *, void *, asymbol *, bfd_print_symbol_type)) bfd_void)
 420 #define _bfd_nosymbols_get_symbol_info \
 421   ((void (*) (bfd *, asymbol *, symbol_info *)) bfd_void)
 422 #define _bfd_nosymbols_get_symbol_version_string \
 423   ((const char *(*) (bfd *, asymbol *, bfd_boolean *)) bfd_nullvoidptr)
 424 #define _bfd_nosymbols_bfd_is_local_label_name \
 425   ((bfd_boolean (*) (bfd *, const char *)) bfd_false)
 426 #define _bfd_nosymbols_bfd_is_target_special_symbol \
 427   ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
 428 #define _bfd_nosymbols_get_lineno \
 429   ((alent *(*) (bfd *, asymbol *)) bfd_nullvoidptr)
 430 #define _bfd_nosymbols_find_nearest_line \
 431   ((bfd_boolean (*) (bfd *, asymbol **, asection *, bfd_vma,            \
 432                      const char **, const char **, unsigned int *,      \
 433                      unsigned int *))                                   \
 434    bfd_false)
 435 #define _bfd_nosymbols_find_line \
 436   ((bfd_boolean (*) (bfd *, asymbol **, asymbol *,      \
 437                      const char **, unsigned int *))    \
 438    bfd_false)
 439 #define _bfd_nosymbols_find_inliner_info \
 440   ((bfd_boolean (*) (bfd *, const char **, const char **, unsigned int *)) \
 441    bfd_false)
 442 #define _bfd_nosymbols_bfd_make_debug_symbol \
 443   ((asymbol *(*) (bfd *, void *, unsigned long)) bfd_nullvoidptr)
 444 #define _bfd_nosymbols_read_minisymbols \
 445   ((long (*) (bfd *, bfd_boolean, void **, unsigned int *)) _bfd_n1)
 446 #define _bfd_nosymbols_minisymbol_to_symbol \
 447   ((asymbol *(*) (bfd *, bfd_boolean, const void *, asymbol *)) \
 448    bfd_nullvoidptr)
 449
 450 /* Routines to use for BFD_JUMP_TABLE_RELOCS when there is no reloc
 451    support.  Use BFD_JUMP_TABLE_RELOCS (_bfd_norelocs).  */
 452
 453 extern long _bfd_norelocs_get_reloc_upper_bound (bfd *, asection *);
 454 extern long _bfd_norelocs_canonicalize_reloc (bfd *, asection *,
 455                                               arelent **, asymbol **);
 456 #define _bfd_norelocs_bfd_reloc_type_lookup \
 457   ((reloc_howto_type *(*) (bfd *, bfd_reloc_code_real_type)) bfd_nullvoidptr)
 458 #define _bfd_norelocs_bfd_reloc_name_lookup \
 459   ((reloc_howto_type *(*) (bfd *, const char *)) bfd_nullvoidptr)
 460
 461 /* Routines to use for BFD_JUMP_TABLE_WRITE for targets which may not
 462    be written.  Use BFD_JUMP_TABLE_WRITE (_bfd_nowrite).  */
 463
 464 #define _bfd_nowrite_set_arch_mach \
 465   ((bfd_boolean (*) (bfd *, enum bfd_architecture, unsigned long)) \
 466    bfd_false)
 467 #define _bfd_nowrite_set_section_contents \
 468   ((bfd_boolean (*) (bfd *, asection *, const void *, file_ptr, bfd_size_type)) \
 469    bfd_false)
 470
 471 /* Generic routines to use for BFD_JUMP_TABLE_WRITE.  Use
 472    BFD_JUMP_TABLE_WRITE (_bfd_generic).  */
 473
 474 #define _bfd_generic_set_arch_mach bfd_default_set_arch_mach
 475 extern bfd_boolean _bfd_generic_set_section_contents
 476   (bfd *, asection *, const void *, file_ptr, bfd_size_type);
 477
 478 /* Routines to use for BFD_JUMP_TABLE_LINK for targets which do not
 479    support linking.  Use BFD_JUMP_TABLE_LINK (_bfd_nolink).  */
 480
 481 #define _bfd_nolink_sizeof_headers \
 482   ((int (*) (bfd *, struct bfd_link_info *)) bfd_0)
 483 #define _bfd_nolink_bfd_get_relocated_section_contents \
 484   ((bfd_byte *(*) (bfd *, struct bfd_link_info *, struct bfd_link_order *, \
 485                    bfd_byte *, bfd_boolean, asymbol **)) \
 486    bfd_nullvoidptr)
 487 #define _bfd_nolink_bfd_relax_section \
 488   ((bfd_boolean (*) \
 489     (bfd *, asection *, struct bfd_link_info *, bfd_boolean *)) \
 490    bfd_false)
 491 #define _bfd_nolink_bfd_gc_sections \
 492   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
 493    bfd_false)
 494 #define _bfd_nolink_bfd_lookup_section_flags \
 495   ((bfd_boolean (*) (struct bfd_link_info *, struct flag_info *, asection *)) \
 496    bfd_0)
 497 #define _bfd_nolink_bfd_merge_sections \
 498   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
 499    bfd_false)
 500 #define _bfd_nolink_bfd_is_group_section \
 501   ((bfd_boolean (*) (bfd *, const struct bfd_section *)) \
 502    bfd_false)
 503 #define _bfd_nolink_bfd_discard_group \
 504   ((bfd_boolean (*) (bfd *, struct bfd_section *)) \
 505    bfd_false)
 506 #define _bfd_nolink_bfd_link_hash_table_create \
 507   ((struct bfd_link_hash_table *(*) (bfd *)) bfd_nullvoidptr)
 508 #define _bfd_nolink_bfd_link_add_symbols \
 509   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
 510 #define _bfd_nolink_bfd_link_just_syms \
 511   ((void (*) (asection *, struct bfd_link_info *)) bfd_void)
 512 #define _bfd_nolink_bfd_copy_link_hash_symbol_type \
 513   ((void (*) (bfd *, struct bfd_link_hash_entry *, \
 514               struct bfd_link_hash_entry *)) bfd_void)
 515 #define _bfd_nolink_bfd_final_link \
 516   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
 517 #define _bfd_nolink_bfd_link_split_section \
 518   ((bfd_boolean (*) (bfd *, struct bfd_section *)) bfd_false)
 519 #define _bfd_nolink_section_already_linked \
 520   ((bfd_boolean (*) (bfd *, asection *, \
 521                      struct bfd_link_info *)) bfd_false)
 522 #define _bfd_nolink_bfd_define_common_symbol \
 523   ((bfd_boolean (*) (bfd *, struct bfd_link_info *, \
 524                      struct bfd_link_hash_entry *)) bfd_false)
 525 #define _bfd_nolink_bfd_link_check_relocs \
 526   _bfd_generic_link_check_relocs
 527
 528 /* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
 529    have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
 530    (_bfd_nodynamic).  */
 531
 532 #define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_n1
 533 #define _bfd_nodynamic_canonicalize_dynamic_symtab \
 534   ((long (*) (bfd *, asymbol **)) _bfd_n1)
 535 #define _bfd_nodynamic_get_synthetic_symtab \
 536   ((long (*) (bfd *, long, asymbol **, long, asymbol **, asymbol **)) _bfd_n1)
 537 #define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_n1
 538 #define _bfd_nodynamic_canonicalize_dynamic_reloc \
 539   ((long (*) (bfd *, arelent **, asymbol **)) _bfd_n1)
 540 \f
 541 /* Generic routine to determine of the given symbol is a local
 542    label.  */
 543 extern bfd_boolean bfd_generic_is_local_label_name
 544   (bfd *, const char *);
 545
 546 /* Generic minisymbol routines.  */
 547 extern long _bfd_generic_read_minisymbols
 548   (bfd *, bfd_boolean, void **, unsigned int *);
 549 extern asymbol *_bfd_generic_minisymbol_to_symbol
 550   (bfd *, bfd_boolean, const void *, asymbol *);
 551
 552 /* Find the nearest line using .stab/.stabstr sections.  */
 553 extern bfd_boolean _bfd_stab_section_find_nearest_line
 554   (bfd *, asymbol **, asection *, bfd_vma, bfd_boolean *,
 555    const char **, const char **, unsigned int *, void **);
 556
 557 /* Find the nearest line using DWARF 1 debugging information.  */
 558 extern bfd_boolean _bfd_dwarf1_find_nearest_line
 559   (bfd *, asymbol **, asection *, bfd_vma,
 560    const char **, const char **, unsigned int *);
 561
 562 struct dwarf_debug_section
 563 {
 564   const char *uncompressed_name;
 565   const char *compressed_name;
 566 };
 567
 568 /* Map of uncompressed DWARF debug section name to compressed one.  It
 569    is terminated by NULL uncompressed_name.  */
 570
 571 extern const struct dwarf_debug_section dwarf_debug_sections[];
 572
 573 /* Find the nearest line using DWARF 2 debugging information.  */
 574 extern bfd_boolean _bfd_dwarf2_find_nearest_line
 575   (bfd *, asymbol **, asymbol *, asection *, bfd_vma,
 576    const char **, const char **, unsigned int *, unsigned int *,
 577    const struct dwarf_debug_section *, unsigned int, void **);
 578
 579 /* Find the bias between DWARF addresses and real addresses.  */
 580 extern bfd_signed_vma _bfd_dwarf2_find_symbol_bias
 581   (asymbol **, void **);
 582
 583 /* Find inliner info after calling bfd_find_nearest_line. */
 584 extern bfd_boolean _bfd_dwarf2_find_inliner_info
 585   (bfd *, const char **, const char **, unsigned int *, void **);
 586
 587 /* Read DWARF 2 debugging information. */
 588 extern bfd_boolean _bfd_dwarf2_slurp_debug_info
 589   (bfd *, bfd *, const struct dwarf_debug_section *, asymbol **, void **,
 590    bfd_boolean);
 591
 592 /* Clean up the data used to handle DWARF 2 debugging information. */
 593 extern void _bfd_dwarf2_cleanup_debug_info
 594   (bfd *, void **);
 595
 596 /* Create a new section entry.  */
 597 extern struct bfd_hash_entry *bfd_section_hash_newfunc
 598   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 599
 600 /* A routine to create entries for a bfd_link_hash_table.  */
 601 extern struct bfd_hash_entry *_bfd_link_hash_newfunc
 602   (struct bfd_hash_entry *entry, struct bfd_hash_table *table,
 603    const char *string);
 604
 605 /* Initialize a bfd_link_hash_table.  */
 606 extern bfd_boolean _bfd_link_hash_table_init
 607   (struct bfd_link_hash_table *, bfd *,
 608    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 609                                struct bfd_hash_table *,
 610                                const char *),
 611    unsigned int);
 612
 613 /* Generic link hash table creation routine.  */
 614 extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
 615   (bfd *);
 616
 617 /* Generic link hash table destruction routine.  */
 618 extern void _bfd_generic_link_hash_table_free
 619   (bfd *);
 620
 621 /* Generic add symbol routine.  */
 622 extern bfd_boolean _bfd_generic_link_add_symbols
 623   (bfd *, struct bfd_link_info *);
 624
 625 /* Generic add symbol routine.  This version is used by targets for
 626    which the linker must collect constructors and destructors by name,
 627    as the collect2 program does.  */
 628 extern bfd_boolean _bfd_generic_link_add_symbols_collect
 629   (bfd *, struct bfd_link_info *);
 630
 631 /* Generic archive add symbol routine.  */
 632 extern bfd_boolean _bfd_generic_link_add_archive_symbols
 633   (bfd *, struct bfd_link_info *,
 634    bfd_boolean (*) (bfd *, struct bfd_link_info *,
 635                     struct bfd_link_hash_entry *, const char *,
 636                     bfd_boolean *));
 637
 638 /* Forward declaration to avoid prototype errors.  */
 639 typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
 640
 641 /* Generic routine to add a single symbol.  */
 642 extern bfd_boolean _bfd_generic_link_add_one_symbol
 643   (struct bfd_link_info *, bfd *, const char *name, flagword,
 644    asection *, bfd_vma, const char *, bfd_boolean copy,
 645    bfd_boolean constructor, struct bfd_link_hash_entry **);
 646
 647 /* Generic routine to mark section as supplying symbols only.  */
 648 extern void _bfd_generic_link_just_syms
 649   (asection *, struct bfd_link_info *);
 650
 651 /* Generic routine that does nothing.  */
 652 extern void _bfd_generic_copy_link_hash_symbol_type
 653   (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *);
 654
 655 /* Generic link routine.  */
 656 extern bfd_boolean _bfd_generic_final_link
 657   (bfd *, struct bfd_link_info *);
 658
 659 extern bfd_boolean _bfd_generic_link_split_section
 660   (bfd *, struct bfd_section *);
 661
 662 extern bfd_boolean _bfd_generic_section_already_linked
 663   (bfd *, asection *, struct bfd_link_info *);
 664
 665 /* Generic reloc_link_order processing routine.  */
 666 extern bfd_boolean _bfd_generic_reloc_link_order
 667   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
 668
 669 /* Default link order processing routine.  */
 670 extern bfd_boolean _bfd_default_link_order
 671   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
 672
 673 /* Count the number of reloc entries in a link order list.  */
 674 extern unsigned int _bfd_count_link_order_relocs
 675   (struct bfd_link_order *);
 676
 677 /* Final link relocation routine.  */
 678 extern bfd_reloc_status_type _bfd_final_link_relocate
 679   (reloc_howto_type *, bfd *, asection *, bfd_byte *,
 680    bfd_vma, bfd_vma, bfd_vma);
 681
 682 /* Relocate a particular location by a howto and a value.  */
 683 extern bfd_reloc_status_type _bfd_relocate_contents
 684   (reloc_howto_type *, bfd *, bfd_vma, bfd_byte *);
 685
 686 /* Clear a given location using a given howto.  */
 687 extern void _bfd_clear_contents (reloc_howto_type *howto, bfd *input_bfd,
 688                                  asection *input_section, bfd_byte *location);
 689
 690 /* Link stabs in sections in the first pass.  */
 691
 692 extern bfd_boolean _bfd_link_section_stabs
 693   (bfd *, struct stab_info *, asection *, asection *, void **,
 694    bfd_size_type *);
 695
 696 /* Eliminate stabs for discarded functions and symbols.  */
 697 extern bfd_boolean _bfd_discard_section_stabs
 698   (bfd *, asection *, void *, bfd_boolean (*) (bfd_vma, void *), void *);
 699
 700 /* Write out the .stab section when linking stabs in sections.  */
 701
 702 extern bfd_boolean _bfd_write_section_stabs
 703   (bfd *, struct stab_info *, asection *, void **, bfd_byte *);
 704
 705 /* Write out the .stabstr string table when linking stabs in sections.  */
 706
 707 extern bfd_boolean _bfd_write_stab_strings
 708   (bfd *, struct stab_info *);
 709
 710 /* Find an offset within a .stab section when linking stabs in
 711    sections.  */
 712
 713 extern bfd_vma _bfd_stab_section_offset
 714   (asection *, void *, bfd_vma);
 715
 716 /* Register a SEC_MERGE section as a candidate for merging.  */
 717
 718 extern bfd_boolean _bfd_add_merge_section
 719   (bfd *, void **, asection *, void **);
 720
 721 /* Attempt to merge SEC_MERGE sections.  */
 722
 723 extern bfd_boolean _bfd_merge_sections
 724   (bfd *, struct bfd_link_info *, void *, void (*) (bfd *, asection *));
 725
 726 /* Write out a merged section.  */
 727
 728 extern bfd_boolean _bfd_write_merged_section
 729   (bfd *, asection *, void *);
 730
 731 /* Find an offset within a modified SEC_MERGE section.  */
 732
 733 extern bfd_vma _bfd_merged_section_offset
 734   (bfd *, asection **, void *, bfd_vma);
 735
 736 /* Tidy up when done.  */
 737
 738 extern void _bfd_merge_sections_free (void *);
 739
 740 /* Create a string table.  */
 741 extern struct bfd_strtab_hash *_bfd_stringtab_init
 742   (void);
 743
 744 /* Create an XCOFF .debug section style string table.  */
 745 extern struct bfd_strtab_hash *_bfd_xcoff_stringtab_init
 746   (void);
 747
 748 /* Free a string table.  */
 749 extern void _bfd_stringtab_free
 750   (struct bfd_strtab_hash *);
 751
 752 /* Get the size of a string table.  */
 753 extern bfd_size_type _bfd_stringtab_size
 754   (struct bfd_strtab_hash *);
 755
 756 /* Add a string to a string table.  */
 757 extern bfd_size_type _bfd_stringtab_add
 758   (struct bfd_strtab_hash *, const char *, bfd_boolean hash, bfd_boolean copy);
 759
 760 /* Write out a string table.  */
 761 extern bfd_boolean _bfd_stringtab_emit
 762   (bfd *, struct bfd_strtab_hash *);
 763
 764 /* Check that endianness of input and output file match.  */
 765 extern bfd_boolean _bfd_generic_verify_endian_match
 766   (bfd *, bfd *);
 767 \f
 768 /* Macros to tell if bfds are read or write enabled.
 769
 770    Note that bfds open for read may be scribbled into if the fd passed
 771    to bfd_fdopenr is actually open both for read and write
 772    simultaneously.  However an output bfd will never be open for
 773    read.  Therefore sometimes you want to check bfd_read_p or
 774    !bfd_read_p, and only sometimes bfd_write_p.
 775 */
 776
 777 #define bfd_read_p(abfd) \
 778   ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
 779 #define bfd_write_p(abfd) \
 780   ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
 781
 782 void bfd_assert
 783   (const char*,int);
 784
 785 #define BFD_ASSERT(x) \
 786   do { if (!(x)) bfd_assert(__FILE__,__LINE__); } while (0)
 787
 788 #define BFD_FAIL() \
 789   do { bfd_assert(__FILE__,__LINE__); } while (0)
 790
 791 extern void _bfd_abort
 792   (const char *, int, const char *) ATTRIBUTE_NORETURN;
 793
 794 /* if gcc >= 2.6, we can give a function name, too */
 795 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
 796 #define __PRETTY_FUNCTION__  ((char *) NULL)
 797 #endif
 798
 799 #undef abort
 800 #define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
 801
 802 /* Manipulate a system FILE but using BFD's "file_ptr", rather than
 803    the system "off_t" or "off64_t", as the offset.  */
 804 extern file_ptr real_ftell (FILE *file);
 805 extern int real_fseek (FILE *file, file_ptr offset, int whence);
 806 extern FILE *real_fopen (const char *filename, const char *modes);
 807
 808 /* List of supported target vectors, and the default vector (if
 809    bfd_default_vector[0] is NULL, there is no default).  */
 810 extern const bfd_target * const *bfd_target_vector;
 811 extern const bfd_target *bfd_default_vector[];
 812
 813 /* List of associated target vectors.  */
 814 extern const bfd_target * const *bfd_associated_vector;
 815
 816 /* Functions shared by the ECOFF and MIPS ELF backends, which have no
 817    other common header files.  */
 818
 819 #if defined(__STDC__) || defined(ALMOST_STDC)
 820 struct ecoff_find_line;
 821 #endif
 822
 823 extern bfd_boolean _bfd_ecoff_locate_line
 824   (bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
 825    const struct ecoff_debug_swap * const, struct ecoff_find_line *,
 826    const char **, const char **, unsigned int *);
 827 extern bfd_boolean _bfd_ecoff_get_accumulated_pdr
 828   (void *, bfd_byte *);
 829 extern bfd_boolean _bfd_ecoff_get_accumulated_sym
 830   (void *, bfd_byte *);
 831 extern bfd_boolean _bfd_ecoff_get_accumulated_ss
 832   (void *, bfd_byte *);
 833
 834 extern bfd_vma _bfd_get_gp_value
 835   (bfd *);
 836 extern void _bfd_set_gp_value
 837   (bfd *, bfd_vma);
 838
 839 /* Function shared by the COFF and ELF SH backends, which have no
 840    other common header files.  */
 841
 842 #ifndef _bfd_sh_align_load_span
 843 extern bfd_boolean _bfd_sh_align_load_span
 844   (bfd *, asection *, bfd_byte *,
 845    bfd_boolean (*) (bfd *, asection *, void *, bfd_byte *, bfd_vma),
 846    void *, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, bfd_boolean *);
 847 #endif
 848
 849 /* This is the shape of the elements inside the already_linked hash
 850    table. It maps a name onto a list of already_linked elements with
 851    the same name.  */
 852
 853 struct bfd_section_already_linked_hash_entry
 854 {
 855   struct bfd_hash_entry root;
 856   struct bfd_section_already_linked *entry;
 857 };
 858
 859 struct bfd_section_already_linked
 860 {
 861   struct bfd_section_already_linked *next;
 862   asection *sec;
 863 };
 864
 865 extern struct bfd_section_already_linked_hash_entry *
 866   bfd_section_already_linked_table_lookup (const char *);
 867 extern bfd_boolean bfd_section_already_linked_table_insert
 868   (struct bfd_section_already_linked_hash_entry *, asection *);
 869 extern void bfd_section_already_linked_table_traverse
 870   (bfd_boolean (*) (struct bfd_section_already_linked_hash_entry *,
 871                     void *), void *);
 872
 873 extern bfd_vma read_unsigned_leb128 (bfd *, bfd_byte *, unsigned int *);
 874 extern bfd_signed_vma read_signed_leb128 (bfd *, bfd_byte *, unsigned int *);
 875 extern bfd_vma safe_read_leb128 (bfd *, bfd_byte *, unsigned int *,
 876                                  bfd_boolean, const bfd_byte * const);