bfd/libbfd-in.h

   1 /* libbfd.h -- Declarations used by bfd library *implementation*.
   2    (This include file is not for users of the library.)
   3
   4    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
   5    1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
   6    2010, 2011, 2012
   7    Free Software Foundation, Inc.
   8
   9    Written by Cygnus Support.
  10
  11    This file is part of BFD, the Binary File Descriptor library.
  12
  13    This program is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 3 of the License, or
  16    (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software
  25    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  26    MA 02110-1301, USA.  */
  27
  28 #include "hashtab.h"
  29
  30 /* Align an address upward to a boundary, expressed as a number of bytes.
  31    E.g. align to an 8-byte boundary with argument of 8.  Take care never
  32    to wrap around if the address is within boundary-1 of the end of the
  33    address space.  */
  34 #define BFD_ALIGN(this, boundary)                                         \
  35   ((((bfd_vma) (this) + (boundary) - 1) >= (bfd_vma) (this))              \
  36    ? (((bfd_vma) (this) + ((boundary) - 1)) & ~ (bfd_vma) ((boundary)-1)) \
  37    : ~ (bfd_vma) 0)
  38
  39 /* If you want to read and write large blocks, you might want to do it
  40    in quanta of this amount */
  41 #define DEFAULT_BUFFERSIZE 8192
  42
  43 /* Set a tdata field.  Can't use the other macros for this, since they
  44    do casts, and casting to the left of assignment isn't portable.  */
  45 #define set_tdata(bfd, v) ((bfd)->tdata.any = (v))
  46
  47 /* If BFD_IN_MEMORY is set for a BFD, then the iostream fields points
  48    to an instance of this structure.  */
  49
  50 struct bfd_in_memory
  51 {
  52   /* Size of buffer.  */
  53   bfd_size_type size;
  54   /* Buffer holding contents of BFD.  */
  55   bfd_byte *buffer;
  56 };
  57
  58 struct section_hash_entry
  59 {
  60   struct bfd_hash_entry root;
  61   asection section;
  62 };
  63
  64 /* tdata for an archive.  For an input archive, cache
  65    needs to be free()'d.  For an output archive, symdefs do.  */
  66
  67 struct artdata
  68 {
  69   file_ptr first_file_filepos;
  70   /* Speed up searching the armap */
  71   htab_t cache;
  72   bfd *archive_head;            /* Only interesting in output routines.  */
  73   carsym *symdefs;              /* The symdef entries.  */
  74   symindex symdef_count;        /* How many there are.  */
  75   char *extended_names;         /* Clever intel extension.  */
  76   bfd_size_type extended_names_size; /* Size of extended names.  */
  77   /* When more compilers are standard C, this can be a time_t.  */
  78   long  armap_timestamp;        /* Timestamp value written into armap.
  79                                    This is used for BSD archives to check
  80                                    that the timestamp is recent enough
  81                                    for the BSD linker to not complain,
  82                                    just before we finish writing an
  83                                    archive.  */
  84   file_ptr armap_datepos;       /* Position within archive to seek to
  85                                    rewrite the date field.  */
  86   void *tdata;                  /* Backend specific information.  */
  87 };
  88
  89 #define bfd_ardata(bfd) ((bfd)->tdata.aout_ar_data)
  90
  91 /* Goes in bfd's arelt_data slot */
  92 struct areltdata
  93 {
  94   char * arch_header;           /* It's actually a string.  */
  95   bfd_size_type parsed_size;    /* Octets of filesize not including ar_hdr.  */
  96   bfd_size_type extra_size;     /* BSD4.4: extra bytes after the header.  */
  97   char *filename;               /* Null-terminated.  */
  98   file_ptr origin;              /* For element of a thin archive.  */
  99   void *parent_cache;           /* Where and how to find this member.  */
 100   file_ptr key;
 101 };
 102
 103 #define arelt_size(bfd) (((struct areltdata *)((bfd)->arelt_data))->parsed_size)
 104
 105 extern void *bfd_malloc
 106   (bfd_size_type);
 107 extern void *bfd_realloc
 108   (void *, bfd_size_type);
 109 extern void *bfd_realloc_or_free
 110   (void *, bfd_size_type);
 111 extern void *bfd_zmalloc
 112   (bfd_size_type);
 113 extern void *bfd_malloc2
 114   (bfd_size_type, bfd_size_type);
 115 extern void *bfd_realloc2
 116   (void *, bfd_size_type, bfd_size_type);
 117 extern void *bfd_zmalloc2
 118   (bfd_size_type, bfd_size_type);
 119
 120 extern void _bfd_default_error_handler (const char *s, ...);
 121 extern bfd_error_handler_type _bfd_error_handler;
 122 extern bfd_assert_handler_type _bfd_assert_handler;
 123
 124 /* These routines allocate and free things on the BFD's objalloc.  */
 125
 126 extern void *bfd_alloc2
 127   (bfd *, bfd_size_type, bfd_size_type);
 128 extern void *bfd_zalloc2
 129   (bfd *, bfd_size_type, bfd_size_type);
 130 extern void bfd_release
 131   (bfd *, void *);
 132
 133 bfd * _bfd_create_empty_archive_element_shell
 134   (bfd *obfd);
 135 bfd * _bfd_look_for_bfd_in_cache
 136   (bfd *, file_ptr);
 137 bfd_boolean _bfd_add_bfd_to_archive_cache
 138   (bfd *, file_ptr, bfd *);
 139 bfd_boolean _bfd_generic_mkarchive
 140   (bfd *abfd);
 141 char *_bfd_append_relative_path
 142   (bfd *arch, char *elt_name);
 143 const bfd_target *bfd_generic_archive_p
 144   (bfd *abfd);
 145 bfd_boolean bfd_slurp_armap
 146   (bfd *abfd);
 147 bfd_boolean bfd_slurp_bsd_armap_f2
 148   (bfd *abfd);
 149 #define bfd_slurp_bsd_armap bfd_slurp_armap
 150 #define bfd_slurp_coff_armap bfd_slurp_armap
 151 bfd_boolean _bfd_slurp_extended_name_table
 152   (bfd *abfd);
 153 extern bfd_boolean _bfd_construct_extended_name_table
 154   (bfd *, bfd_boolean, char **, bfd_size_type *);
 155 bfd_boolean _bfd_write_archive_contents
 156   (bfd *abfd);
 157 bfd_boolean _bfd_compute_and_write_armap
 158   (bfd *, unsigned int elength);
 159 bfd *_bfd_get_elt_at_filepos
 160   (bfd *archive, file_ptr filepos);
 161 extern bfd *_bfd_generic_get_elt_at_index
 162   (bfd *, symindex);
 163 bfd * _bfd_new_bfd
 164   (void);
 165 bfd_boolean _bfd_free_cached_info
 166   (bfd *);
 167
 168 bfd_boolean bfd_false
 169   (bfd *ignore);
 170 bfd_boolean bfd_true
 171   (bfd *ignore);
 172 void *bfd_nullvoidptr
 173   (bfd *ignore);
 174 int bfd_0
 175   (bfd *ignore);
 176 unsigned int bfd_0u
 177   (bfd *ignore);
 178 long bfd_0l
 179   (bfd *ignore);
 180 long _bfd_n1
 181   (bfd *ignore);
 182 void bfd_void
 183   (bfd *ignore);
 184
 185 bfd *_bfd_new_bfd_contained_in
 186   (bfd *);
 187 const bfd_target *_bfd_dummy_target
 188   (bfd *abfd);
 189
 190 void bfd_dont_truncate_arname
 191   (bfd *abfd, const char *filename, char *hdr);
 192 void bfd_bsd_truncate_arname
 193   (bfd *abfd, const char *filename, char *hdr);
 194 void bfd_gnu_truncate_arname
 195   (bfd *abfd, const char *filename, char *hdr);
 196
 197 bfd_boolean bsd_write_armap
 198   (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
 199    int stridx);
 200
 201 bfd_boolean coff_write_armap
 202   (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count,
 203    int stridx);
 204
 205 extern void *_bfd_generic_read_ar_hdr
 206   (bfd *);
 207 extern void _bfd_ar_spacepad
 208   (char *, size_t, const char *, long);
 209 extern bfd_boolean _bfd_ar_sizepad
 210   (char *, size_t, bfd_size_type);
 211
 212 extern void *_bfd_generic_read_ar_hdr_mag
 213   (bfd *, const char *);
 214
 215 extern bfd_boolean _bfd_generic_write_ar_hdr
 216   (bfd *, bfd *);
 217
 218 extern bfd_boolean _bfd_bsd44_write_ar_hdr
 219   (bfd *, bfd *);
 220
 221 bfd * bfd_generic_openr_next_archived_file
 222   (bfd *archive, bfd *last_file);
 223
 224 int bfd_generic_stat_arch_elt
 225   (bfd *, struct stat *);
 226
 227 #define _bfd_read_ar_hdr(abfd) \
 228   BFD_SEND (abfd, _bfd_read_ar_hdr_fn, (abfd))
 229 #define _bfd_write_ar_hdr(archive, abfd)         \
 230   BFD_SEND (abfd, _bfd_write_ar_hdr_fn, (archive, abfd))
 231 \f
 232 /* Generic routines to use for BFD_JUMP_TABLE_GENERIC.  Use
 233    BFD_JUMP_TABLE_GENERIC (_bfd_generic).  */
 234
 235 #define _bfd_generic_close_and_cleanup _bfd_archive_close_and_cleanup
 236 extern bfd_boolean _bfd_archive_close_and_cleanup
 237   (bfd *);
 238 #define _bfd_generic_bfd_free_cached_info bfd_true
 239 extern bfd_boolean _bfd_generic_new_section_hook
 240   (bfd *, asection *);
 241 extern bfd_boolean _bfd_generic_get_section_contents
 242   (bfd *, asection *, void *, file_ptr, bfd_size_type);
 243 extern bfd_boolean _bfd_generic_get_section_contents_in_window
 244   (bfd *, asection *, bfd_window *, file_ptr, bfd_size_type);
 245
 246 /* Generic routines to use for BFD_JUMP_TABLE_COPY.  Use
 247    BFD_JUMP_TABLE_COPY (_bfd_generic).  */
 248
 249 #define _bfd_generic_bfd_copy_private_bfd_data \
 250   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 251 #define _bfd_generic_bfd_merge_private_bfd_data \
 252   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 253 #define _bfd_generic_bfd_set_private_flags \
 254   ((bfd_boolean (*) (bfd *, flagword)) bfd_true)
 255 #define _bfd_generic_bfd_copy_private_section_data \
 256   ((bfd_boolean (*) (bfd *, asection *, bfd *, asection *)) bfd_true)
 257 #define _bfd_generic_bfd_copy_private_symbol_data \
 258   ((bfd_boolean (*) (bfd *, asymbol *, bfd *, asymbol *)) bfd_true)
 259 #define _bfd_generic_bfd_copy_private_header_data \
 260   ((bfd_boolean (*) (bfd *, bfd *)) bfd_true)
 261 #define _bfd_generic_bfd_print_private_bfd_data \
 262   ((bfd_boolean (*) (bfd *, void *)) bfd_true)
 263
 264 extern bfd_boolean _bfd_generic_init_private_section_data
 265   (bfd *, asection *, bfd *, asection *, struct bfd_link_info *);
 266
 267 /* Routines to use for BFD_JUMP_TABLE_CORE when there is no core file
 268    support.  Use BFD_JUMP_TABLE_CORE (_bfd_nocore).  */
 269
 270 extern char *_bfd_nocore_core_file_failing_command
 271   (bfd *);
 272 extern int _bfd_nocore_core_file_failing_signal
 273   (bfd *);
 274 extern bfd_boolean _bfd_nocore_core_file_matches_executable_p
 275   (bfd *, bfd *);
 276 extern int _bfd_nocore_core_file_pid
 277   (bfd *);
 278
 279 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE when there is no archive
 280    file support.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive).  */
 281
 282 #define _bfd_noarchive_slurp_armap bfd_false
 283 #define _bfd_noarchive_slurp_extended_name_table bfd_false
 284 #define _bfd_noarchive_construct_extended_name_table \
 285   ((bfd_boolean (*) (bfd *, char **, bfd_size_type *, const char **)) \
 286    bfd_false)
 287 #define _bfd_noarchive_truncate_arname \
 288   ((void (*) (bfd *, const char *, char *)) bfd_void)
 289 #define _bfd_noarchive_write_armap \
 290   ((bfd_boolean (*) (bfd *, unsigned int, struct orl *, unsigned int, int)) \
 291    bfd_false)
 292 #define _bfd_noarchive_read_ar_hdr bfd_nullvoidptr
 293 #define _bfd_noarchive_write_ar_hdr \
 294   ((bfd_boolean (*) (bfd *, bfd *)) bfd_false)
 295 #define _bfd_noarchive_openr_next_archived_file \
 296   ((bfd *(*) (bfd *, bfd *)) bfd_nullvoidptr)
 297 #define _bfd_noarchive_get_elt_at_index \
 298   ((bfd *(*) (bfd *, symindex)) bfd_nullvoidptr)
 299 #define _bfd_noarchive_generic_stat_arch_elt bfd_generic_stat_arch_elt
 300 #define _bfd_noarchive_update_armap_timestamp bfd_false
 301
 302 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD style
 303    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd).  */
 304
 305 #define _bfd_archive_bsd_slurp_armap bfd_slurp_bsd_armap
 306 #define _bfd_archive_bsd_slurp_extended_name_table \
 307   _bfd_slurp_extended_name_table
 308 extern bfd_boolean _bfd_archive_bsd_construct_extended_name_table
 309   (bfd *, char **, bfd_size_type *, const char **);
 310 #define _bfd_archive_bsd_truncate_arname bfd_bsd_truncate_arname
 311 #define _bfd_archive_bsd_write_armap bsd_write_armap
 312 #define _bfd_archive_bsd_read_ar_hdr _bfd_generic_read_ar_hdr
 313 #define _bfd_archive_bsd_write_ar_hdr _bfd_generic_write_ar_hdr
 314 #define _bfd_archive_bsd_openr_next_archived_file \
 315   bfd_generic_openr_next_archived_file
 316 #define _bfd_archive_bsd_get_elt_at_index _bfd_generic_get_elt_at_index
 317 #define _bfd_archive_bsd_generic_stat_arch_elt \
 318   bfd_generic_stat_arch_elt
 319 extern bfd_boolean _bfd_archive_bsd_update_armap_timestamp
 320   (bfd *);
 321
 322 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get COFF style
 323    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff).  */
 324
 325 #define _bfd_archive_coff_slurp_armap bfd_slurp_coff_armap
 326 #define _bfd_archive_coff_slurp_extended_name_table \
 327   _bfd_slurp_extended_name_table
 328 extern bfd_boolean _bfd_archive_coff_construct_extended_name_table
 329   (bfd *, char **, bfd_size_type *, const char **);
 330 #define _bfd_archive_coff_truncate_arname bfd_dont_truncate_arname
 331 #define _bfd_archive_coff_write_armap coff_write_armap
 332 #define _bfd_archive_coff_read_ar_hdr _bfd_generic_read_ar_hdr
 333 #define _bfd_archive_coff_write_ar_hdr _bfd_generic_write_ar_hdr
 334 #define _bfd_archive_coff_openr_next_archived_file \
 335   bfd_generic_openr_next_archived_file
 336 #define _bfd_archive_coff_get_elt_at_index _bfd_generic_get_elt_at_index
 337 #define _bfd_archive_coff_generic_stat_arch_elt \
 338   bfd_generic_stat_arch_elt
 339 #define _bfd_archive_coff_update_armap_timestamp bfd_true
 340
 341 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get BSD4.4 style
 342    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_bsd44).  */
 343
 344 #define _bfd_archive_bsd44_slurp_armap bfd_slurp_bsd_armap
 345 #define _bfd_archive_bsd44_slurp_extended_name_table \
 346   _bfd_slurp_extended_name_table
 347 extern bfd_boolean _bfd_archive_bsd44_construct_extended_name_table
 348   (bfd *, char **, bfd_size_type *, const char **);
 349 #define _bfd_archive_bsd44_truncate_arname bfd_bsd_truncate_arname
 350 #define _bfd_archive_bsd44_write_armap bsd_write_armap
 351 #define _bfd_archive_bsd44_read_ar_hdr _bfd_generic_read_ar_hdr
 352 #define _bfd_archive_bsd44_write_ar_hdr _bfd_bsd44_write_ar_hdr
 353 #define _bfd_archive_bsd44_openr_next_archived_file \
 354   bfd_generic_openr_next_archived_file
 355 #define _bfd_archive_bsd44_get_elt_at_index _bfd_generic_get_elt_at_index
 356 #define _bfd_archive_bsd44_generic_stat_arch_elt \
 357   bfd_generic_stat_arch_elt
 358 #define _bfd_archive_bsd44_update_armap_timestamp \
 359   _bfd_archive_bsd_update_armap_timestamp
 360
 361 /* Routines to use for BFD_JUMP_TABLE_ARCHIVE to get VMS style
 362    archives.  Use BFD_JUMP_TABLE_ARCHIVE (_bfd_vms_lib).  Some of them
 363    are irrelevant and never called, so defined as NULL.  */
 364
 365 extern bfd_boolean _bfd_vms_lib_write_archive_contents (bfd *arch);
 366 #define _bfd_vms_lib_slurp_armap NULL
 367 #define _bfd_vms_lib_slurp_extended_name_table NULL
 368 #define _bfd_vms_lib_construct_extended_name_table NULL
 369 #define _bfd_vms_lib_truncate_arname NULL
 370 #define _bfd_vms_lib_write_armap NULL
 371 #define _bfd_vms_lib_read_ar_hdr NULL
 372 #define _bfd_vms_lib_write_ar_hdr NULL
 373 extern bfd *_bfd_vms_lib_openr_next_archived_file (bfd *, bfd *);
 374 extern bfd *_bfd_vms_lib_get_elt_at_index (bfd *, symindex);
 375 extern int _bfd_vms_lib_generic_stat_arch_elt (bfd *, struct stat *);
 376 #define _bfd_vms_lib_update_armap_timestamp bfd_true
 377
 378 /* Extra routines for VMS style archives.  */
 379
 380 extern symindex _bfd_vms_lib_find_symbol (bfd *, const char *);
 381 extern bfd *_bfd_vms_lib_get_imagelib_file (bfd *);
 382 extern const bfd_target *_bfd_vms_lib_alpha_archive_p (bfd *abfd);
 383 extern const bfd_target *_bfd_vms_lib_ia64_archive_p (bfd *abfd);
 384 extern bfd_boolean _bfd_vms_lib_alpha_mkarchive (bfd *abfd);
 385 extern bfd_boolean _bfd_vms_lib_ia64_mkarchive (bfd *abfd);
 386
 387 /* Routines to use for BFD_JUMP_TABLE_SYMBOLS where there is no symbol
 388    support.  Use BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols).  */
 389
 390 #define _bfd_nosymbols_get_symtab_upper_bound _bfd_n1
 391 #define _bfd_nosymbols_canonicalize_symtab \
 392   ((long (*) (bfd *, asymbol **)) _bfd_n1)
 393 #define _bfd_nosymbols_make_empty_symbol _bfd_generic_make_empty_symbol
 394 #define _bfd_nosymbols_print_symbol \
 395   ((void (*) (bfd *, void *, asymbol *, bfd_print_symbol_type)) bfd_void)
 396 #define _bfd_nosymbols_get_symbol_info \
 397   ((void (*) (bfd *, asymbol *, symbol_info *)) bfd_void)
 398 #define _bfd_nosymbols_bfd_is_local_label_name \
 399   ((bfd_boolean (*) (bfd *, const char *)) bfd_false)
 400 #define _bfd_nosymbols_bfd_is_target_special_symbol \
 401   ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
 402 #define _bfd_nosymbols_get_lineno \
 403   ((alent *(*) (bfd *, asymbol *)) bfd_nullvoidptr)
 404 #define _bfd_nosymbols_find_nearest_line \
 405   ((bfd_boolean (*) (bfd *, asection *, asymbol **, bfd_vma, const char **, \
 406                      const char **, unsigned int *)) \
 407    bfd_false)
 408 #define _bfd_nosymbols_find_inliner_info \
 409   ((bfd_boolean (*) (bfd *, const char **, const char **, unsigned int *)) \
 410    bfd_false)
 411 #define _bfd_nosymbols_bfd_make_debug_symbol \
 412   ((asymbol *(*) (bfd *, void *, unsigned long)) bfd_nullvoidptr)
 413 #define _bfd_nosymbols_read_minisymbols \
 414   ((long (*) (bfd *, bfd_boolean, void **, unsigned int *)) _bfd_n1)
 415 #define _bfd_nosymbols_minisymbol_to_symbol \
 416   ((asymbol *(*) (bfd *, bfd_boolean, const void *, asymbol *)) \
 417    bfd_nullvoidptr)
 418
 419 /* Routines to use for BFD_JUMP_TABLE_RELOCS when there is no reloc
 420    support.  Use BFD_JUMP_TABLE_RELOCS (_bfd_norelocs).  */
 421
 422 extern long _bfd_norelocs_get_reloc_upper_bound (bfd *, asection *);
 423 extern long _bfd_norelocs_canonicalize_reloc (bfd *, asection *,
 424                                               arelent **, asymbol **);
 425 #define _bfd_norelocs_bfd_reloc_type_lookup \
 426   ((reloc_howto_type *(*) (bfd *, bfd_reloc_code_real_type)) bfd_nullvoidptr)
 427 #define _bfd_norelocs_bfd_reloc_name_lookup \
 428   ((reloc_howto_type *(*) (bfd *, const char *)) bfd_nullvoidptr)
 429
 430 /* Routines to use for BFD_JUMP_TABLE_WRITE for targets which may not
 431    be written.  Use BFD_JUMP_TABLE_WRITE (_bfd_nowrite).  */
 432
 433 #define _bfd_nowrite_set_arch_mach \
 434   ((bfd_boolean (*) (bfd *, enum bfd_architecture, unsigned long)) \
 435    bfd_false)
 436 #define _bfd_nowrite_set_section_contents \
 437   ((bfd_boolean (*) (bfd *, asection *, const void *, file_ptr, bfd_size_type)) \
 438    bfd_false)
 439
 440 /* Generic routines to use for BFD_JUMP_TABLE_WRITE.  Use
 441    BFD_JUMP_TABLE_WRITE (_bfd_generic).  */
 442
 443 #define _bfd_generic_set_arch_mach bfd_default_set_arch_mach
 444 extern bfd_boolean _bfd_generic_set_section_contents
 445   (bfd *, asection *, const void *, file_ptr, bfd_size_type);
 446
 447 /* Routines to use for BFD_JUMP_TABLE_LINK for targets which do not
 448    support linking.  Use BFD_JUMP_TABLE_LINK (_bfd_nolink).  */
 449
 450 #define _bfd_nolink_sizeof_headers \
 451   ((int (*) (bfd *, struct bfd_link_info *)) bfd_0)
 452 #define _bfd_nolink_bfd_get_relocated_section_contents \
 453   ((bfd_byte *(*) (bfd *, struct bfd_link_info *, struct bfd_link_order *, \
 454                    bfd_byte *, bfd_boolean, asymbol **)) \
 455    bfd_nullvoidptr)
 456 #define _bfd_nolink_bfd_relax_section \
 457   ((bfd_boolean (*) \
 458     (bfd *, asection *, struct bfd_link_info *, bfd_boolean *)) \
 459    bfd_false)
 460 #define _bfd_nolink_bfd_gc_sections \
 461   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
 462    bfd_false)
 463 #define _bfd_nolink_bfd_lookup_section_flags \
 464   ((bfd_boolean (*) (struct bfd_link_info *, struct flag_info *, asection *)) \
 465    bfd_0)
 466 #define _bfd_nolink_bfd_merge_sections \
 467   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) \
 468    bfd_false)
 469 #define _bfd_nolink_bfd_is_group_section \
 470   ((bfd_boolean (*) (bfd *, const struct bfd_section *)) \
 471    bfd_false)
 472 #define _bfd_nolink_bfd_discard_group \
 473   ((bfd_boolean (*) (bfd *, struct bfd_section *)) \
 474    bfd_false)
 475 #define _bfd_nolink_bfd_link_hash_table_create \
 476   ((struct bfd_link_hash_table *(*) (bfd *)) bfd_nullvoidptr)
 477 #define _bfd_nolink_bfd_link_hash_table_free \
 478   ((void (*) (struct bfd_link_hash_table *)) bfd_void)
 479 #define _bfd_nolink_bfd_link_add_symbols \
 480   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
 481 #define _bfd_nolink_bfd_link_just_syms \
 482   ((void (*) (asection *, struct bfd_link_info *)) bfd_void)
 483 #define _bfd_nolink_bfd_copy_link_hash_symbol_type \
 484   ((void (*) (bfd *, struct bfd_link_hash_entry *, \
 485               struct bfd_link_hash_entry *)) bfd_void)
 486 #define _bfd_nolink_bfd_final_link \
 487   ((bfd_boolean (*) (bfd *, struct bfd_link_info *)) bfd_false)
 488 #define _bfd_nolink_bfd_link_split_section \
 489   ((bfd_boolean (*) (bfd *, struct bfd_section *)) bfd_false)
 490 #define _bfd_nolink_section_already_linked \
 491   ((bfd_boolean (*) (bfd *, asection *, \
 492                      struct bfd_link_info *)) bfd_false)
 493 #define _bfd_nolink_bfd_define_common_symbol \
 494   ((bfd_boolean (*) (bfd *, struct bfd_link_info *, \
 495                      struct bfd_link_hash_entry *)) bfd_false)
 496
 497 /* Routines to use for BFD_JUMP_TABLE_DYNAMIC for targets which do not
 498    have dynamic symbols or relocs.  Use BFD_JUMP_TABLE_DYNAMIC
 499    (_bfd_nodynamic).  */
 500
 501 #define _bfd_nodynamic_get_dynamic_symtab_upper_bound _bfd_n1
 502 #define _bfd_nodynamic_canonicalize_dynamic_symtab \
 503   ((long (*) (bfd *, asymbol **)) _bfd_n1)
 504 #define _bfd_nodynamic_get_synthetic_symtab \
 505   ((long (*) (bfd *, long, asymbol **, long, asymbol **, asymbol **)) _bfd_n1)
 506 #define _bfd_nodynamic_get_dynamic_reloc_upper_bound _bfd_n1
 507 #define _bfd_nodynamic_canonicalize_dynamic_reloc \
 508   ((long (*) (bfd *, arelent **, asymbol **)) _bfd_n1)
 509 \f
 510 /* Generic routine to determine of the given symbol is a local
 511    label.  */
 512 extern bfd_boolean bfd_generic_is_local_label_name
 513   (bfd *, const char *);
 514
 515 /* Generic minisymbol routines.  */
 516 extern long _bfd_generic_read_minisymbols
 517   (bfd *, bfd_boolean, void **, unsigned int *);
 518 extern asymbol *_bfd_generic_minisymbol_to_symbol
 519   (bfd *, bfd_boolean, const void *, asymbol *);
 520
 521 /* Find the nearest line using .stab/.stabstr sections.  */
 522 extern bfd_boolean _bfd_stab_section_find_nearest_line
 523   (bfd *, asymbol **, asection *, bfd_vma, bfd_boolean *,
 524    const char **, const char **, unsigned int *, void **);
 525
 526 /* Find the nearest line using DWARF 1 debugging information.  */
 527 extern bfd_boolean _bfd_dwarf1_find_nearest_line
 528   (bfd *, asection *, asymbol **, bfd_vma, const char **,
 529    const char **, unsigned int *);
 530
 531 struct dwarf_debug_section
 532 {
 533   const char *uncompressed_name;
 534   const char *compressed_name;
 535 };
 536
 537 /* Map of uncompressed DWARF debug section name to compressed one.  It
 538    is terminated by NULL uncompressed_name.  */
 539
 540 extern const struct dwarf_debug_section dwarf_debug_sections[];
 541
 542 /* Find the nearest line using DWARF 2 debugging information.  */
 543 extern bfd_boolean _bfd_dwarf2_find_nearest_line
 544   (bfd *, const struct dwarf_debug_section *, asection *, asymbol **, bfd_vma,
 545    const char **, const char **, unsigned int *, unsigned int *, unsigned int,
 546    void **);
 547
 548 /* Find the line using DWARF 2 debugging information.  */
 549 extern bfd_boolean _bfd_dwarf2_find_line
 550   (bfd *, asymbol **, asymbol *, const char **,
 551    unsigned int *, unsigned int *, unsigned int, void **);
 552
 553 bfd_boolean _bfd_generic_find_line
 554   (bfd *, asymbol **, asymbol *, const char **, unsigned int *);
 555
 556 bfd_boolean _bfd_generic_find_nearest_line_discriminator
 557   (bfd *, asection *, asymbol **, bfd_vma, const char **, const char **,
 558    unsigned int *, unsigned int *);
 559
 560 /* Find inliner info after calling bfd_find_nearest_line. */
 561 extern bfd_boolean _bfd_dwarf2_find_inliner_info
 562   (bfd *, const char **, const char **, unsigned int *, void **);
 563
 564 /* Read DWARF 2 debugging information. */
 565 extern bfd_boolean _bfd_dwarf2_slurp_debug_info
 566   (bfd *, bfd *, const struct dwarf_debug_section *, asymbol **, void **);
 567
 568 /* Clean up the data used to handle DWARF 2 debugging information. */
 569 extern void _bfd_dwarf2_cleanup_debug_info
 570   (bfd *, void **);
 571
 572 /* Create a new section entry.  */
 573 extern struct bfd_hash_entry *bfd_section_hash_newfunc
 574   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 575
 576 /* A routine to create entries for a bfd_link_hash_table.  */
 577 extern struct bfd_hash_entry *_bfd_link_hash_newfunc
 578   (struct bfd_hash_entry *entry, struct bfd_hash_table *table,
 579    const char *string);
 580
 581 /* Initialize a bfd_link_hash_table.  */
 582 extern bfd_boolean _bfd_link_hash_table_init
 583   (struct bfd_link_hash_table *, bfd *,
 584    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 585                                struct bfd_hash_table *,
 586                                const char *),
 587    unsigned int);
 588
 589 /* Generic link hash table creation routine.  */
 590 extern struct bfd_link_hash_table *_bfd_generic_link_hash_table_create
 591   (bfd *);
 592
 593 /* Generic link hash table destruction routine.  */
 594 extern void _bfd_generic_link_hash_table_free
 595   (struct bfd_link_hash_table *);
 596
 597 /* Generic add symbol routine.  */
 598 extern bfd_boolean _bfd_generic_link_add_symbols
 599   (bfd *, struct bfd_link_info *);
 600
 601 /* Generic add symbol routine.  This version is used by targets for
 602    which the linker must collect constructors and destructors by name,
 603    as the collect2 program does.  */
 604 extern bfd_boolean _bfd_generic_link_add_symbols_collect
 605   (bfd *, struct bfd_link_info *);
 606
 607 /* Generic archive add symbol routine.  */
 608 extern bfd_boolean _bfd_generic_link_add_archive_symbols
 609   (bfd *, struct bfd_link_info *,
 610    bfd_boolean (*) (bfd *, struct bfd_link_info *, bfd_boolean *));
 611
 612 /* Forward declaration to avoid prototype errors.  */
 613 typedef struct bfd_link_hash_entry _bfd_link_hash_entry;
 614
 615 /* Generic routine to add a single symbol.  */
 616 extern bfd_boolean _bfd_generic_link_add_one_symbol
 617   (struct bfd_link_info *, bfd *, const char *name, flagword,
 618    asection *, bfd_vma, const char *, bfd_boolean copy,
 619    bfd_boolean constructor, struct bfd_link_hash_entry **);
 620
 621 /* Generic routine to mark section as supplying symbols only.  */
 622 extern void _bfd_generic_link_just_syms
 623   (asection *, struct bfd_link_info *);
 624
 625 /* Generic routine that does nothing.  */
 626 extern void _bfd_generic_copy_link_hash_symbol_type
 627   (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *);
 628
 629 /* Generic link routine.  */
 630 extern bfd_boolean _bfd_generic_final_link
 631   (bfd *, struct bfd_link_info *);
 632
 633 extern bfd_boolean _bfd_generic_link_split_section
 634   (bfd *, struct bfd_section *);
 635
 636 extern bfd_boolean _bfd_generic_section_already_linked
 637   (bfd *, asection *, struct bfd_link_info *);
 638
 639 /* Generic reloc_link_order processing routine.  */
 640 extern bfd_boolean _bfd_generic_reloc_link_order
 641   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
 642
 643 /* Default link order processing routine.  */
 644 extern bfd_boolean _bfd_default_link_order
 645   (bfd *, struct bfd_link_info *, asection *, struct bfd_link_order *);
 646
 647 /* Count the number of reloc entries in a link order list.  */
 648 extern unsigned int _bfd_count_link_order_relocs
 649   (struct bfd_link_order *);
 650
 651 /* Final link relocation routine.  */
 652 extern bfd_reloc_status_type _bfd_final_link_relocate
 653   (reloc_howto_type *, bfd *, asection *, bfd_byte *,
 654    bfd_vma, bfd_vma, bfd_vma);
 655
 656 /* Relocate a particular location by a howto and a value.  */
 657 extern bfd_reloc_status_type _bfd_relocate_contents
 658   (reloc_howto_type *, bfd *, bfd_vma, bfd_byte *);
 659
 660 /* Clear a given location using a given howto.  */
 661 extern void _bfd_clear_contents (reloc_howto_type *howto, bfd *input_bfd,
 662                                  asection *input_section, bfd_byte *location);
 663
 664 /* Link stabs in sections in the first pass.  */
 665
 666 extern bfd_boolean _bfd_link_section_stabs
 667   (bfd *, struct stab_info *, asection *, asection *, void **,
 668    bfd_size_type *);
 669
 670 /* Eliminate stabs for discarded functions and symbols.  */
 671 extern bfd_boolean _bfd_discard_section_stabs
 672   (bfd *, asection *, void *, bfd_boolean (*) (bfd_vma, void *), void *);
 673
 674 /* Write out the .stab section when linking stabs in sections.  */
 675
 676 extern bfd_boolean _bfd_write_section_stabs
 677   (bfd *, struct stab_info *, asection *, void **, bfd_byte *);
 678
 679 /* Write out the .stabstr string table when linking stabs in sections.  */
 680
 681 extern bfd_boolean _bfd_write_stab_strings
 682   (bfd *, struct stab_info *);
 683
 684 /* Find an offset within a .stab section when linking stabs in
 685    sections.  */
 686
 687 extern bfd_vma _bfd_stab_section_offset
 688   (asection *, void *, bfd_vma);
 689
 690 /* Register a SEC_MERGE section as a candidate for merging.  */
 691
 692 extern bfd_boolean _bfd_add_merge_section
 693   (bfd *, void **, asection *, void **);
 694
 695 /* Attempt to merge SEC_MERGE sections.  */
 696
 697 extern bfd_boolean _bfd_merge_sections
 698   (bfd *, struct bfd_link_info *, void *, void (*) (bfd *, asection *));
 699
 700 /* Write out a merged section.  */
 701
 702 extern bfd_boolean _bfd_write_merged_section
 703   (bfd *, asection *, void *);
 704
 705 /* Find an offset within a modified SEC_MERGE section.  */
 706
 707 extern bfd_vma _bfd_merged_section_offset
 708   (bfd *, asection **, void *, bfd_vma);
 709
 710 /* Create a string table.  */
 711 extern struct bfd_strtab_hash *_bfd_stringtab_init
 712   (void);
 713
 714 /* Create an XCOFF .debug section style string table.  */
 715 extern struct bfd_strtab_hash *_bfd_xcoff_stringtab_init
 716   (void);
 717
 718 /* Free a string table.  */
 719 extern void _bfd_stringtab_free
 720   (struct bfd_strtab_hash *);
 721
 722 /* Get the size of a string table.  */
 723 extern bfd_size_type _bfd_stringtab_size
 724   (struct bfd_strtab_hash *);
 725
 726 /* Add a string to a string table.  */
 727 extern bfd_size_type _bfd_stringtab_add
 728   (struct bfd_strtab_hash *, const char *, bfd_boolean hash, bfd_boolean copy);
 729
 730 /* Write out a string table.  */
 731 extern bfd_boolean _bfd_stringtab_emit
 732   (bfd *, struct bfd_strtab_hash *);
 733
 734 /* Check that endianness of input and output file match.  */
 735 extern bfd_boolean _bfd_generic_verify_endian_match
 736   (bfd *, bfd *);
 737 \f
 738 /* Macros to tell if bfds are read or write enabled.
 739
 740    Note that bfds open for read may be scribbled into if the fd passed
 741    to bfd_fdopenr is actually open both for read and write
 742    simultaneously.  However an output bfd will never be open for
 743    read.  Therefore sometimes you want to check bfd_read_p or
 744    !bfd_read_p, and only sometimes bfd_write_p.
 745 */
 746
 747 #define bfd_read_p(abfd) \
 748   ((abfd)->direction == read_direction || (abfd)->direction == both_direction)
 749 #define bfd_write_p(abfd) \
 750   ((abfd)->direction == write_direction || (abfd)->direction == both_direction)
 751
 752 void bfd_assert
 753   (const char*,int);
 754
 755 #define BFD_ASSERT(x) \
 756   do { if (!(x)) bfd_assert(__FILE__,__LINE__); } while (0)
 757
 758 #define BFD_FAIL() \
 759   do { bfd_assert(__FILE__,__LINE__); } while (0)
 760
 761 extern void _bfd_abort
 762   (const char *, int, const char *) ATTRIBUTE_NORETURN;
 763
 764 /* if gcc >= 2.6, we can give a function name, too */
 765 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
 766 #define __PRETTY_FUNCTION__  ((char *) NULL)
 767 #endif
 768
 769 #undef abort
 770 #define abort() _bfd_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
 771
 772 /* Manipulate a system FILE but using BFD's "file_ptr", rather than
 773    the system "off_t" or "off64_t", as the offset.  */
 774 extern file_ptr real_ftell (FILE *file);
 775 extern int real_fseek (FILE *file, file_ptr offset, int whence);
 776 extern FILE *real_fopen (const char *filename, const char *modes);
 777
 778 /* List of supported target vectors, and the default vector (if
 779    bfd_default_vector[0] is NULL, there is no default).  */
 780 extern const bfd_target * const *bfd_target_vector;
 781 extern const bfd_target *bfd_default_vector[];
 782
 783 /* List of associated target vectors.  */
 784 extern const bfd_target * const *bfd_associated_vector;
 785
 786 /* Functions shared by the ECOFF and MIPS ELF backends, which have no
 787    other common header files.  */
 788
 789 #if defined(__STDC__) || defined(ALMOST_STDC)
 790 struct ecoff_find_line;
 791 #endif
 792
 793 extern bfd_boolean _bfd_ecoff_locate_line
 794   (bfd *, asection *, bfd_vma, struct ecoff_debug_info * const,
 795    const struct ecoff_debug_swap * const, struct ecoff_find_line *,
 796    const char **, const char **, unsigned int *);
 797 extern bfd_boolean _bfd_ecoff_get_accumulated_pdr
 798   (void *, bfd_byte *);
 799 extern bfd_boolean _bfd_ecoff_get_accumulated_sym
 800   (void *, bfd_byte *);
 801 extern bfd_boolean _bfd_ecoff_get_accumulated_ss
 802   (void *, bfd_byte *);
 803
 804 extern bfd_vma _bfd_get_gp_value
 805   (bfd *);
 806 extern void _bfd_set_gp_value
 807   (bfd *, bfd_vma);
 808
 809 /* Function shared by the COFF and ELF SH backends, which have no
 810    other common header files.  */
 811
 812 #ifndef _bfd_sh_align_load_span
 813 extern bfd_boolean _bfd_sh_align_load_span
 814   (bfd *, asection *, bfd_byte *,
 815    bfd_boolean (*) (bfd *, asection *, void *, bfd_byte *, bfd_vma),
 816    void *, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, bfd_boolean *);
 817 #endif
 818
 819 /* This is the shape of the elements inside the already_linked hash
 820    table. It maps a name onto a list of already_linked elements with
 821    the same name.  */
 822
 823 struct bfd_section_already_linked_hash_entry
 824 {
 825   struct bfd_hash_entry root;
 826   struct bfd_section_already_linked *entry;
 827 };
 828
 829 struct bfd_section_already_linked
 830 {
 831   struct bfd_section_already_linked *next;
 832   asection *sec;
 833 };
 834
 835 extern struct bfd_section_already_linked_hash_entry *
 836   bfd_section_already_linked_table_lookup (const char *);
 837 extern bfd_boolean bfd_section_already_linked_table_insert
 838   (struct bfd_section_already_linked_hash_entry *, asection *);
 839 extern void bfd_section_already_linked_table_traverse
 840   (bfd_boolean (*) (struct bfd_section_already_linked_hash_entry *,
 841                     void *), void *);
 842
 843 extern bfd_vma read_unsigned_leb128 (bfd *, bfd_byte *, unsigned int *);
 844 extern bfd_signed_vma read_signed_leb128 (bfd *, bfd_byte *, unsigned int *);