bfd/targets.c

   1 /* Generic target-file-type support for the BFD library.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   3    2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
   4    Free Software Foundation, Inc.
   5    Written by Cygnus Support.
   6
   7    This file is part of BFD, the Binary File Descriptor library.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  22    MA 02110-1301, USA.  */
  23
  24 #include "sysdep.h"
  25 #include "bfd.h"
  26 #include "libbfd.h"
  27 #include "fnmatch.h"
  28
  29 /*
  30    It's okay to see some:
  31 #if 0
  32    directives in this source file, as targets.c uses them to exclude
  33    certain BFD vectors.  This comment is specially formatted to catch
  34    users who grep for ^#if 0, so please keep it this way!
  35 */
  36
  37 /*
  38 SECTION
  39         Targets
  40
  41 DESCRIPTION
  42         Each port of BFD to a different machine requires the creation
  43         of a target back end. All the back end provides to the root
  44         part of BFD is a structure containing pointers to functions
  45         which perform certain low level operations on files. BFD
  46         translates the applications's requests through a pointer into
  47         calls to the back end routines.
  48
  49         When a file is opened with <<bfd_openr>>, its format and
  50         target are unknown. BFD uses various mechanisms to determine
  51         how to interpret the file. The operations performed are:
  52
  53         o Create a BFD by calling the internal routine
  54         <<_bfd_new_bfd>>, then call <<bfd_find_target>> with the
  55         target string supplied to <<bfd_openr>> and the new BFD pointer.
  56
  57         o If a null target string was provided to <<bfd_find_target>>,
  58         look up the environment variable <<GNUTARGET>> and use
  59         that as the target string.
  60
  61         o If the target string is still <<NULL>>, or the target string is
  62         <<default>>, then use the first item in the target vector
  63         as the target type, and set <<target_defaulted>> in the BFD to
  64         cause <<bfd_check_format>> to loop through all the targets.
  65         @xref{bfd_target}.  @xref{Formats}.
  66
  67         o Otherwise, inspect the elements in the target vector
  68         one by one, until a match on target name is found. When found,
  69         use it.
  70
  71         o Otherwise return the error <<bfd_error_invalid_target>> to
  72         <<bfd_openr>>.
  73
  74         o <<bfd_openr>> attempts to open the file using
  75         <<bfd_open_file>>, and returns the BFD.
  76
  77         Once the BFD has been opened and the target selected, the file
  78         format may be determined. This is done by calling
  79         <<bfd_check_format>> on the BFD with a suggested format.
  80         If <<target_defaulted>> has been set, each possible target
  81         type is tried to see if it recognizes the specified format.
  82         <<bfd_check_format>> returns <<TRUE>> when the caller guesses right.
  83 @menu
  84 @* bfd_target::
  85 @end menu
  86 */
  87
  88 /*
  89
  90 INODE
  91         bfd_target,  , Targets, Targets
  92 DOCDD
  93 SUBSECTION
  94         bfd_target
  95
  96 DESCRIPTION
  97         This structure contains everything that BFD knows about a
  98         target. It includes things like its byte order, name, and which
  99         routines to call to do various operations.
 100
 101         Every BFD points to a target structure with its <<xvec>>
 102         member.
 103
 104         The macros below are used to dispatch to functions through the
 105         <<bfd_target>> vector. They are used in a number of macros further
 106         down in @file{bfd.h}, and are also used when calling various
 107         routines by hand inside the BFD implementation.  The @var{arglist}
 108         argument must be parenthesized; it contains all the arguments
 109         to the called function.
 110
 111         They make the documentation (more) unpleasant to read, so if
 112         someone wants to fix this and not break the above, please do.
 113
 114 .#define BFD_SEND(bfd, message, arglist) \
 115 .  ((*((bfd)->xvec->message)) arglist)
 116 .
 117 .#ifdef DEBUG_BFD_SEND
 118 .#undef BFD_SEND
 119 .#define BFD_SEND(bfd, message, arglist) \
 120 .  (((bfd) && (bfd)->xvec && (bfd)->xvec->message) ? \
 121 .    ((*((bfd)->xvec->message)) arglist) : \
 122 .    (bfd_assert (__FILE__,__LINE__), NULL))
 123 .#endif
 124
 125         For operations which index on the BFD format:
 126
 127 .#define BFD_SEND_FMT(bfd, message, arglist) \
 128 .  (((bfd)->xvec->message[(int) ((bfd)->format)]) arglist)
 129 .
 130 .#ifdef DEBUG_BFD_SEND
 131 .#undef BFD_SEND_FMT
 132 .#define BFD_SEND_FMT(bfd, message, arglist) \
 133 .  (((bfd) && (bfd)->xvec && (bfd)->xvec->message) ? \
 134 .   (((bfd)->xvec->message[(int) ((bfd)->format)]) arglist) : \
 135 .   (bfd_assert (__FILE__,__LINE__), NULL))
 136 .#endif
 137 .
 138         This is the structure which defines the type of BFD this is.  The
 139         <<xvec>> member of the struct <<bfd>> itself points here.  Each
 140         module that implements access to a different target under BFD,
 141         defines one of these.
 142
 143         FIXME, these names should be rationalised with the names of
 144         the entry points which call them. Too bad we can't have one
 145         macro to define them both!
 146
 147 .enum bfd_flavour
 148 .{
 149 .  bfd_target_unknown_flavour,
 150 .  bfd_target_aout_flavour,
 151 .  bfd_target_coff_flavour,
 152 .  bfd_target_ecoff_flavour,
 153 .  bfd_target_xcoff_flavour,
 154 .  bfd_target_elf_flavour,
 155 .  bfd_target_ieee_flavour,
 156 .  bfd_target_nlm_flavour,
 157 .  bfd_target_oasys_flavour,
 158 .  bfd_target_tekhex_flavour,
 159 .  bfd_target_srec_flavour,
 160 .  bfd_target_verilog_flavour,
 161 .  bfd_target_ihex_flavour,
 162 .  bfd_target_som_flavour,
 163 .  bfd_target_os9k_flavour,
 164 .  bfd_target_versados_flavour,
 165 .  bfd_target_msdos_flavour,
 166 .  bfd_target_ovax_flavour,
 167 .  bfd_target_evax_flavour,
 168 .  bfd_target_mmo_flavour,
 169 .  bfd_target_mach_o_flavour,
 170 .  bfd_target_pef_flavour,
 171 .  bfd_target_pef_xlib_flavour,
 172 .  bfd_target_sym_flavour
 173 .};
 174 .
 175 .enum bfd_endian { BFD_ENDIAN_BIG, BFD_ENDIAN_LITTLE, BFD_ENDIAN_UNKNOWN };
 176 .
 177 .{* Forward declaration.  *}
 178 .typedef struct bfd_link_info _bfd_link_info;
 179 .
 180 .{* Forward declaration.  *}
 181 .typedef struct flag_info flag_info;
 182 .
 183 .typedef struct bfd_target
 184 .{
 185 .  {* Identifies the kind of target, e.g., SunOS4, Ultrix, etc.  *}
 186 .  char *name;
 187 .
 188 . {* The "flavour" of a back end is a general indication about
 189 .    the contents of a file.  *}
 190 .  enum bfd_flavour flavour;
 191 .
 192 .  {* The order of bytes within the data area of a file.  *}
 193 .  enum bfd_endian byteorder;
 194 .
 195 . {* The order of bytes within the header parts of a file.  *}
 196 .  enum bfd_endian header_byteorder;
 197 .
 198 .  {* A mask of all the flags which an executable may have set -
 199 .     from the set <<BFD_NO_FLAGS>>, <<HAS_RELOC>>, ...<<D_PAGED>>.  *}
 200 .  flagword object_flags;
 201 .
 202 . {* A mask of all the flags which a section may have set - from
 203 .    the set <<SEC_NO_FLAGS>>, <<SEC_ALLOC>>, ...<<SET_NEVER_LOAD>>.  *}
 204 .  flagword section_flags;
 205 .
 206 . {* The character normally found at the front of a symbol.
 207 .    (if any), perhaps `_'.  *}
 208 .  char symbol_leading_char;
 209 .
 210 . {* The pad character for file names within an archive header.  *}
 211 .  char ar_pad_char;
 212 .
 213 .  {* The maximum number of characters in an archive header.  *}
 214 .  unsigned char ar_max_namelen;
 215 .
 216 .  {* How well this target matches, used to select between various
 217 .     possible targets when more than one target matches.  *}
 218 .  unsigned char match_priority;
 219 .
 220 .  {* Entries for byte swapping for data. These are different from the
 221 .     other entry points, since they don't take a BFD as the first argument.
 222 .     Certain other handlers could do the same.  *}
 223 .  bfd_uint64_t   (*bfd_getx64) (const void *);
 224 .  bfd_int64_t    (*bfd_getx_signed_64) (const void *);
 225 .  void           (*bfd_putx64) (bfd_uint64_t, void *);
 226 .  bfd_vma        (*bfd_getx32) (const void *);
 227 .  bfd_signed_vma (*bfd_getx_signed_32) (const void *);
 228 .  void           (*bfd_putx32) (bfd_vma, void *);
 229 .  bfd_vma        (*bfd_getx16) (const void *);
 230 .  bfd_signed_vma (*bfd_getx_signed_16) (const void *);
 231 .  void           (*bfd_putx16) (bfd_vma, void *);
 232 .
 233 .  {* Byte swapping for the headers.  *}
 234 .  bfd_uint64_t   (*bfd_h_getx64) (const void *);
 235 .  bfd_int64_t    (*bfd_h_getx_signed_64) (const void *);
 236 .  void           (*bfd_h_putx64) (bfd_uint64_t, void *);
 237 .  bfd_vma        (*bfd_h_getx32) (const void *);
 238 .  bfd_signed_vma (*bfd_h_getx_signed_32) (const void *);
 239 .  void           (*bfd_h_putx32) (bfd_vma, void *);
 240 .  bfd_vma        (*bfd_h_getx16) (const void *);
 241 .  bfd_signed_vma (*bfd_h_getx_signed_16) (const void *);
 242 .  void           (*bfd_h_putx16) (bfd_vma, void *);
 243 .
 244 .  {* Format dependent routines: these are vectors of entry points
 245 .     within the target vector structure, one for each format to check.  *}
 246 .
 247 .  {* Check the format of a file being read.  Return a <<bfd_target *>> or zero.  *}
 248 .  const struct bfd_target *(*_bfd_check_format[bfd_type_end]) (bfd *);
 249 .
 250 .  {* Set the format of a file being written.  *}
 251 .  bfd_boolean (*_bfd_set_format[bfd_type_end]) (bfd *);
 252 .
 253 .  {* Write cached information into a file being written, at <<bfd_close>>.  *}
 254 .  bfd_boolean (*_bfd_write_contents[bfd_type_end]) (bfd *);
 255 .
 256 The general target vector.  These vectors are initialized using the
 257 BFD_JUMP_TABLE macros.
 258 .
 259 .  {* Generic entry points.  *}
 260 .#define BFD_JUMP_TABLE_GENERIC(NAME) \
 261 .  NAME##_close_and_cleanup, \
 262 .  NAME##_bfd_free_cached_info, \
 263 .  NAME##_new_section_hook, \
 264 .  NAME##_get_section_contents, \
 265 .  NAME##_get_section_contents_in_window
 266 .
 267 .  {* Called when the BFD is being closed to do any necessary cleanup.  *}
 268 .  bfd_boolean (*_close_and_cleanup) (bfd *);
 269 .  {* Ask the BFD to free all cached information.  *}
 270 .  bfd_boolean (*_bfd_free_cached_info) (bfd *);
 271 .  {* Called when a new section is created.  *}
 272 .  bfd_boolean (*_new_section_hook) (bfd *, sec_ptr);
 273 .  {* Read the contents of a section.  *}
 274 .  bfd_boolean (*_bfd_get_section_contents)
 275 .    (bfd *, sec_ptr, void *, file_ptr, bfd_size_type);
 276 .  bfd_boolean (*_bfd_get_section_contents_in_window)
 277 .    (bfd *, sec_ptr, bfd_window *, file_ptr, bfd_size_type);
 278 .
 279 .  {* Entry points to copy private data.  *}
 280 .#define BFD_JUMP_TABLE_COPY(NAME) \
 281 .  NAME##_bfd_copy_private_bfd_data, \
 282 .  NAME##_bfd_merge_private_bfd_data, \
 283 .  _bfd_generic_init_private_section_data, \
 284 .  NAME##_bfd_copy_private_section_data, \
 285 .  NAME##_bfd_copy_private_symbol_data, \
 286 .  NAME##_bfd_copy_private_header_data, \
 287 .  NAME##_bfd_set_private_flags, \
 288 .  NAME##_bfd_print_private_bfd_data
 289 .
 290 .  {* Called to copy BFD general private data from one object file
 291 .     to another.  *}
 292 .  bfd_boolean (*_bfd_copy_private_bfd_data) (bfd *, bfd *);
 293 .  {* Called to merge BFD general private data from one object file
 294 .     to a common output file when linking.  *}
 295 .  bfd_boolean (*_bfd_merge_private_bfd_data) (bfd *, bfd *);
 296 .  {* Called to initialize BFD private section data from one object file
 297 .     to another.  *}
 298 .#define bfd_init_private_section_data(ibfd, isec, obfd, osec, link_info) \
 299 .  BFD_SEND (obfd, _bfd_init_private_section_data, (ibfd, isec, obfd, osec, link_info))
 300 .  bfd_boolean (*_bfd_init_private_section_data)
 301 .    (bfd *, sec_ptr, bfd *, sec_ptr, struct bfd_link_info *);
 302 .  {* Called to copy BFD private section data from one object file
 303 .     to another.  *}
 304 .  bfd_boolean (*_bfd_copy_private_section_data)
 305 .    (bfd *, sec_ptr, bfd *, sec_ptr);
 306 .  {* Called to copy BFD private symbol data from one symbol
 307 .     to another.  *}
 308 .  bfd_boolean (*_bfd_copy_private_symbol_data)
 309 .    (bfd *, asymbol *, bfd *, asymbol *);
 310 .  {* Called to copy BFD private header data from one object file
 311 .     to another.  *}
 312 .  bfd_boolean (*_bfd_copy_private_header_data)
 313 .    (bfd *, bfd *);
 314 .  {* Called to set private backend flags.  *}
 315 .  bfd_boolean (*_bfd_set_private_flags) (bfd *, flagword);
 316 .
 317 .  {* Called to print private BFD data.  *}
 318 .  bfd_boolean (*_bfd_print_private_bfd_data) (bfd *, void *);
 319 .
 320 .  {* Core file entry points.  *}
 321 .#define BFD_JUMP_TABLE_CORE(NAME) \
 322 .  NAME##_core_file_failing_command, \
 323 .  NAME##_core_file_failing_signal, \
 324 .  NAME##_core_file_matches_executable_p, \
 325 .  NAME##_core_file_pid
 326 .
 327 .  char *      (*_core_file_failing_command) (bfd *);
 328 .  int         (*_core_file_failing_signal) (bfd *);
 329 .  bfd_boolean (*_core_file_matches_executable_p) (bfd *, bfd *);
 330 .  int         (*_core_file_pid) (bfd *);
 331 .
 332 .  {* Archive entry points.  *}
 333 .#define BFD_JUMP_TABLE_ARCHIVE(NAME) \
 334 .  NAME##_slurp_armap, \
 335 .  NAME##_slurp_extended_name_table, \
 336 .  NAME##_construct_extended_name_table, \
 337 .  NAME##_truncate_arname, \
 338 .  NAME##_write_armap, \
 339 .  NAME##_read_ar_hdr, \
 340 .  NAME##_write_ar_hdr, \
 341 .  NAME##_openr_next_archived_file, \
 342 .  NAME##_get_elt_at_index, \
 343 .  NAME##_generic_stat_arch_elt, \
 344 .  NAME##_update_armap_timestamp
 345 .
 346 .  bfd_boolean (*_bfd_slurp_armap) (bfd *);
 347 .  bfd_boolean (*_bfd_slurp_extended_name_table) (bfd *);
 348 .  bfd_boolean (*_bfd_construct_extended_name_table)
 349 .    (bfd *, char **, bfd_size_type *, const char **);
 350 .  void        (*_bfd_truncate_arname) (bfd *, const char *, char *);
 351 .  bfd_boolean (*write_armap)
 352 .    (bfd *, unsigned int, struct orl *, unsigned int, int);
 353 .  void *      (*_bfd_read_ar_hdr_fn) (bfd *);
 354 .  bfd_boolean (*_bfd_write_ar_hdr_fn) (bfd *, bfd *);
 355 .  bfd *       (*openr_next_archived_file) (bfd *, bfd *);
 356 .#define bfd_get_elt_at_index(b,i) BFD_SEND (b, _bfd_get_elt_at_index, (b,i))
 357 .  bfd *       (*_bfd_get_elt_at_index) (bfd *, symindex);
 358 .  int         (*_bfd_stat_arch_elt) (bfd *, struct stat *);
 359 .  bfd_boolean (*_bfd_update_armap_timestamp) (bfd *);
 360 .
 361 .  {* Entry points used for symbols.  *}
 362 .#define BFD_JUMP_TABLE_SYMBOLS(NAME) \
 363 .  NAME##_get_symtab_upper_bound, \
 364 .  NAME##_canonicalize_symtab, \
 365 .  NAME##_make_empty_symbol, \
 366 .  NAME##_print_symbol, \
 367 .  NAME##_get_symbol_info, \
 368 .  NAME##_bfd_is_local_label_name, \
 369 .  NAME##_bfd_is_target_special_symbol, \
 370 .  NAME##_get_lineno, \
 371 .  NAME##_find_nearest_line, \
 372 .  _bfd_generic_find_nearest_line_discriminator, \
 373 .  _bfd_generic_find_line, \
 374 .  NAME##_find_inliner_info, \
 375 .  NAME##_bfd_make_debug_symbol, \
 376 .  NAME##_read_minisymbols, \
 377 .  NAME##_minisymbol_to_symbol
 378 .
 379 .  long        (*_bfd_get_symtab_upper_bound) (bfd *);
 380 .  long        (*_bfd_canonicalize_symtab)
 381 .    (bfd *, struct bfd_symbol **);
 382 .  struct bfd_symbol *
 383 .              (*_bfd_make_empty_symbol) (bfd *);
 384 .  void        (*_bfd_print_symbol)
 385 .    (bfd *, void *, struct bfd_symbol *, bfd_print_symbol_type);
 386 .#define bfd_print_symbol(b,p,s,e) BFD_SEND (b, _bfd_print_symbol, (b,p,s,e))
 387 .  void        (*_bfd_get_symbol_info)
 388 .    (bfd *, struct bfd_symbol *, symbol_info *);
 389 .#define bfd_get_symbol_info(b,p,e) BFD_SEND (b, _bfd_get_symbol_info, (b,p,e))
 390 .  bfd_boolean (*_bfd_is_local_label_name) (bfd *, const char *);
 391 .  bfd_boolean (*_bfd_is_target_special_symbol) (bfd *, asymbol *);
 392 .  alent *     (*_get_lineno) (bfd *, struct bfd_symbol *);
 393 .  bfd_boolean (*_bfd_find_nearest_line)
 394 .    (bfd *, struct bfd_section *, struct bfd_symbol **, bfd_vma,
 395 .     const char **, const char **, unsigned int *);
 396 .  bfd_boolean (*_bfd_find_nearest_line_discriminator)
 397 .    (bfd *, struct bfd_section *, struct bfd_symbol **, bfd_vma,
 398 .     const char **, const char **, unsigned int *, unsigned int *);
 399 .  bfd_boolean (*_bfd_find_line)
 400 .    (bfd *, struct bfd_symbol **, struct bfd_symbol *,
 401 .     const char **, unsigned int *);
 402 .  bfd_boolean (*_bfd_find_inliner_info)
 403 .    (bfd *, const char **, const char **, unsigned int *);
 404 . {* Back-door to allow format-aware applications to create debug symbols
 405 .    while using BFD for everything else.  Currently used by the assembler
 406 .    when creating COFF files.  *}
 407 .  asymbol *   (*_bfd_make_debug_symbol)
 408 .    (bfd *, void *, unsigned long size);
 409 .#define bfd_read_minisymbols(b, d, m, s) \
 410 .  BFD_SEND (b, _read_minisymbols, (b, d, m, s))
 411 .  long        (*_read_minisymbols)
 412 .    (bfd *, bfd_boolean, void **, unsigned int *);
 413 .#define bfd_minisymbol_to_symbol(b, d, m, f) \
 414 .  BFD_SEND (b, _minisymbol_to_symbol, (b, d, m, f))
 415 .  asymbol *   (*_minisymbol_to_symbol)
 416 .    (bfd *, bfd_boolean, const void *, asymbol *);
 417 .
 418 .  {* Routines for relocs.  *}
 419 .#define BFD_JUMP_TABLE_RELOCS(NAME) \
 420 .  NAME##_get_reloc_upper_bound, \
 421 .  NAME##_canonicalize_reloc, \
 422 .  NAME##_bfd_reloc_type_lookup, \
 423 .  NAME##_bfd_reloc_name_lookup
 424 .
 425 .  long        (*_get_reloc_upper_bound) (bfd *, sec_ptr);
 426 .  long        (*_bfd_canonicalize_reloc)
 427 .    (bfd *, sec_ptr, arelent **, struct bfd_symbol **);
 428 .  {* See documentation on reloc types.  *}
 429 .  reloc_howto_type *
 430 .              (*reloc_type_lookup) (bfd *, bfd_reloc_code_real_type);
 431 .  reloc_howto_type *
 432 .              (*reloc_name_lookup) (bfd *, const char *);
 433 .
 434 .
 435 .  {* Routines used when writing an object file.  *}
 436 .#define BFD_JUMP_TABLE_WRITE(NAME) \
 437 .  NAME##_set_arch_mach, \
 438 .  NAME##_set_section_contents
 439 .
 440 .  bfd_boolean (*_bfd_set_arch_mach)
 441 .    (bfd *, enum bfd_architecture, unsigned long);
 442 .  bfd_boolean (*_bfd_set_section_contents)
 443 .    (bfd *, sec_ptr, const void *, file_ptr, bfd_size_type);
 444 .
 445 .  {* Routines used by the linker.  *}
 446 .#define BFD_JUMP_TABLE_LINK(NAME) \
 447 .  NAME##_sizeof_headers, \
 448 .  NAME##_bfd_get_relocated_section_contents, \
 449 .  NAME##_bfd_relax_section, \
 450 .  NAME##_bfd_link_hash_table_create, \
 451 .  NAME##_bfd_link_hash_table_free, \
 452 .  NAME##_bfd_link_add_symbols, \
 453 .  NAME##_bfd_link_just_syms, \
 454 .  NAME##_bfd_copy_link_hash_symbol_type, \
 455 .  NAME##_bfd_final_link, \
 456 .  NAME##_bfd_link_split_section, \
 457 .  NAME##_bfd_gc_sections, \
 458 .  NAME##_bfd_lookup_section_flags, \
 459 .  NAME##_bfd_merge_sections, \
 460 .  NAME##_bfd_is_group_section, \
 461 .  NAME##_bfd_discard_group, \
 462 .  NAME##_section_already_linked, \
 463 .  NAME##_bfd_define_common_symbol
 464 .
 465 .  int         (*_bfd_sizeof_headers) (bfd *, struct bfd_link_info *);
 466 .  bfd_byte *  (*_bfd_get_relocated_section_contents)
 467 .    (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 468 .     bfd_byte *, bfd_boolean, struct bfd_symbol **);
 469 .
 470 .  bfd_boolean (*_bfd_relax_section)
 471 .    (bfd *, struct bfd_section *, struct bfd_link_info *, bfd_boolean *);
 472 .
 473 .  {* Create a hash table for the linker.  Different backends store
 474 .     different information in this table.  *}
 475 .  struct bfd_link_hash_table *
 476 .              (*_bfd_link_hash_table_create) (bfd *);
 477 .
 478 .  {* Release the memory associated with the linker hash table.  *}
 479 .  void        (*_bfd_link_hash_table_free) (struct bfd_link_hash_table *);
 480 .
 481 .  {* Add symbols from this object file into the hash table.  *}
 482 .  bfd_boolean (*_bfd_link_add_symbols) (bfd *, struct bfd_link_info *);
 483 .
 484 .  {* Indicate that we are only retrieving symbol values from this section.  *}
 485 .  void        (*_bfd_link_just_syms) (asection *, struct bfd_link_info *);
 486 .
 487 .  {* Copy the symbol type of a linker hash table entry.  *}
 488 .#define bfd_copy_link_hash_symbol_type(b, t, f) \
 489 .  BFD_SEND (b, _bfd_copy_link_hash_symbol_type, (b, t, f))
 490 .  void (*_bfd_copy_link_hash_symbol_type)
 491 .    (bfd *, struct bfd_link_hash_entry *, struct bfd_link_hash_entry *);
 492 .
 493 .  {* Do a link based on the link_order structures attached to each
 494 .     section of the BFD.  *}
 495 .  bfd_boolean (*_bfd_final_link) (bfd *, struct bfd_link_info *);
 496 .
 497 .  {* Should this section be split up into smaller pieces during linking.  *}
 498 .  bfd_boolean (*_bfd_link_split_section) (bfd *, struct bfd_section *);
 499 .
 500 .  {* Remove sections that are not referenced from the output.  *}
 501 .  bfd_boolean (*_bfd_gc_sections) (bfd *, struct bfd_link_info *);
 502 .
 503 .  {* Sets the bitmask of allowed and disallowed section flags.  *}
 504 .  bfd_boolean (*_bfd_lookup_section_flags) (struct bfd_link_info *,
 505 .                                            struct flag_info *,
 506 .                                            asection *);
 507 .
 508 .  {* Attempt to merge SEC_MERGE sections.  *}
 509 .  bfd_boolean (*_bfd_merge_sections) (bfd *, struct bfd_link_info *);
 510 .
 511 .  {* Is this section a member of a group?  *}
 512 .  bfd_boolean (*_bfd_is_group_section) (bfd *, const struct bfd_section *);
 513 .
 514 .  {* Discard members of a group.  *}
 515 .  bfd_boolean (*_bfd_discard_group) (bfd *, struct bfd_section *);
 516 .
 517 .  {* Check if SEC has been already linked during a reloceatable or
 518 .     final link.  *}
 519 .  bfd_boolean (*_section_already_linked) (bfd *, asection *,
 520 .                                          struct bfd_link_info *);
 521 .
 522 .  {* Define a common symbol.  *}
 523 .  bfd_boolean (*_bfd_define_common_symbol) (bfd *, struct bfd_link_info *,
 524 .                                            struct bfd_link_hash_entry *);
 525 .
 526 .  {* Routines to handle dynamic symbols and relocs.  *}
 527 .#define BFD_JUMP_TABLE_DYNAMIC(NAME) \
 528 .  NAME##_get_dynamic_symtab_upper_bound, \
 529 .  NAME##_canonicalize_dynamic_symtab, \
 530 .  NAME##_get_synthetic_symtab, \
 531 .  NAME##_get_dynamic_reloc_upper_bound, \
 532 .  NAME##_canonicalize_dynamic_reloc
 533 .
 534 .  {* Get the amount of memory required to hold the dynamic symbols.  *}
 535 .  long        (*_bfd_get_dynamic_symtab_upper_bound) (bfd *);
 536 .  {* Read in the dynamic symbols.  *}
 537 .  long        (*_bfd_canonicalize_dynamic_symtab)
 538 .    (bfd *, struct bfd_symbol **);
 539 .  {* Create synthetized symbols.  *}
 540 .  long        (*_bfd_get_synthetic_symtab)
 541 .    (bfd *, long, struct bfd_symbol **, long, struct bfd_symbol **,
 542 .     struct bfd_symbol **);
 543 .  {* Get the amount of memory required to hold the dynamic relocs.  *}
 544 .  long        (*_bfd_get_dynamic_reloc_upper_bound) (bfd *);
 545 .  {* Read in the dynamic relocs.  *}
 546 .  long        (*_bfd_canonicalize_dynamic_reloc)
 547 .    (bfd *, arelent **, struct bfd_symbol **);
 548 .
 549
 550 A pointer to an alternative bfd_target in case the current one is not
 551 satisfactory.  This can happen when the target cpu supports both big
 552 and little endian code, and target chosen by the linker has the wrong
 553 endianness.  The function open_output() in ld/ldlang.c uses this field
 554 to find an alternative output format that is suitable.
 555
 556 .  {* Opposite endian version of this target.  *}
 557 .  const struct bfd_target * alternative_target;
 558 .
 559
 560 .  {* Data for use by back-end routines, which isn't
 561 .     generic enough to belong in this structure.  *}
 562 .  const void *backend_data;
 563 .
 564 .} bfd_target;
 565 .
 566 */
 567
 568 /* All known xvecs (even those that don't compile on all systems).
 569    Alphabetized for easy reference.
 570    They are listed a second time below, since
 571    we can't intermix extern's and initializers.  */
 572 extern const bfd_target a_out_adobe_vec;
 573 extern const bfd_target aix5coff64_vec;
 574 extern const bfd_target aout0_big_vec;
 575 extern const bfd_target aout_arm_big_vec;
 576 extern const bfd_target aout_arm_little_vec;
 577 extern const bfd_target aout_mips_big_vec;
 578 extern const bfd_target aout_mips_little_vec;
 579 extern const bfd_target apollocoff_vec;
 580 extern const bfd_target arm_epoc_pe_big_vec;
 581 extern const bfd_target arm_epoc_pe_little_vec;
 582 extern const bfd_target arm_epoc_pei_big_vec;
 583 extern const bfd_target arm_epoc_pei_little_vec;
 584 extern const bfd_target arm_wince_pe_big_vec;
 585 extern const bfd_target arm_wince_pe_little_vec;
 586 extern const bfd_target arm_wince_pei_big_vec;
 587 extern const bfd_target arm_wince_pei_little_vec;
 588 extern const bfd_target armcoff_big_vec;
 589 extern const bfd_target armcoff_little_vec;
 590 extern const bfd_target armnetbsd_vec;
 591 extern const bfd_target armpe_big_vec;
 592 extern const bfd_target armpe_little_vec;
 593 extern const bfd_target armpei_big_vec;
 594 extern const bfd_target armpei_little_vec;
 595 extern const bfd_target b_out_vec_big_host;
 596 extern const bfd_target b_out_vec_little_host;
 597 extern const bfd_target bfd_pei_ia64_vec;
 598 extern const bfd_target bfd_elf32_avr_vec;
 599 extern const bfd_target bfd_elf32_bfin_vec;
 600 extern const bfd_target bfd_elf32_bfinfdpic_vec;
 601 extern const bfd_target bfd_elf32_big_generic_vec;
 602 extern const bfd_target bfd_elf32_bigarc_vec;
 603 extern const bfd_target bfd_elf32_bigarm_vec;
 604 extern const bfd_target bfd_elf32_bigarm_nacl_vec;
 605 extern const bfd_target bfd_elf32_bigarm_symbian_vec;
 606 extern const bfd_target bfd_elf32_bigarm_vxworks_vec;
 607 extern const bfd_target bfd_elf32_bigmips_vec;
 608 extern const bfd_target bfd_elf32_bigmips_vxworks_vec;
 609 extern const bfd_target bfd_elf32_bigmoxie_vec;
 610 extern const bfd_target bfd_elf32_cr16_vec;
 611 extern const bfd_target bfd_elf32_cr16c_vec;
 612 extern const bfd_target bfd_elf32_cris_vec;
 613 extern const bfd_target bfd_elf32_crx_vec;
 614 extern const bfd_target bfd_elf32_d10v_vec;
 615 extern const bfd_target bfd_elf32_d30v_vec;
 616 extern const bfd_target bfd_elf32_dlx_big_vec;
 617 extern const bfd_target bfd_elf32_epiphany_vec;
 618 extern const bfd_target bfd_elf32_fr30_vec;
 619 extern const bfd_target bfd_elf32_frv_vec;
 620 extern const bfd_target bfd_elf32_frvfdpic_vec;
 621 extern const bfd_target bfd_elf32_h8300_vec;
 622 extern const bfd_target bfd_elf32_hppa_linux_vec;
 623 extern const bfd_target bfd_elf32_hppa_nbsd_vec;
 624 extern const bfd_target bfd_elf32_hppa_vec;
 625 extern const bfd_target bfd_elf32_i370_vec;
 626 extern const bfd_target bfd_elf32_i386_freebsd_vec;
 627 extern const bfd_target bfd_elf32_i386_nacl_vec;
 628 extern const bfd_target bfd_elf32_i386_sol2_vec;
 629 extern const bfd_target bfd_elf32_i386_vxworks_vec;
 630 extern const bfd_target bfd_elf32_i386_vec;
 631 extern const bfd_target bfd_elf32_i860_little_vec;
 632 extern const bfd_target bfd_elf32_i860_vec;
 633 extern const bfd_target bfd_elf32_i960_vec;
 634 extern const bfd_target bfd_elf32_ia64_big_vec;
 635 extern const bfd_target bfd_elf32_ia64_hpux_big_vec;
 636 extern const bfd_target bfd_elf32_ip2k_vec;
 637 extern const bfd_target bfd_elf32_iq2000_vec;
 638 extern const bfd_target bfd_elf32_lm32_vec;
 639 extern const bfd_target bfd_elf32_lm32fdpic_vec;
 640 extern const bfd_target bfd_elf32_little_generic_vec;
 641 extern const bfd_target bfd_elf32_littlearc_vec;
 642 extern const bfd_target bfd_elf32_littlearm_vec;
 643 extern const bfd_target bfd_elf32_littlearm_nacl_vec;
 644 extern const bfd_target bfd_elf32_littlearm_symbian_vec;
 645 extern const bfd_target bfd_elf32_littlearm_vxworks_vec;
 646 extern const bfd_target bfd_elf32_littlemips_vec;
 647 extern const bfd_target bfd_elf32_littlemips_vxworks_vec;
 648 extern const bfd_target bfd_elf32_littlemoxie_vec;
 649 extern const bfd_target bfd_elf32_m32c_vec;
 650 extern const bfd_target bfd_elf32_m32r_vec;
 651 extern const bfd_target bfd_elf32_m32rle_vec;
 652 extern const bfd_target bfd_elf32_m32rlin_vec;
 653 extern const bfd_target bfd_elf32_m32rlelin_vec;
 654 extern const bfd_target bfd_elf32_m68hc11_vec;
 655 extern const bfd_target bfd_elf32_m68hc12_vec;
 656 extern const bfd_target bfd_elf32_m68k_vec;
 657 extern const bfd_target bfd_elf32_m88k_vec;
 658 extern const bfd_target bfd_elf32_mcore_big_vec;
 659 extern const bfd_target bfd_elf32_mcore_little_vec;
 660 extern const bfd_target bfd_elf32_mep_vec;
 661 extern const bfd_target bfd_elf32_mep_little_vec;
 662 extern const bfd_target bfd_elf32_microblaze_vec;
 663 extern const bfd_target bfd_elf32_mn10200_vec;
 664 extern const bfd_target bfd_elf32_mn10300_vec;
 665 extern const bfd_target bfd_elf32_mt_vec;
 666 extern const bfd_target bfd_elf32_msp430_vec;
 667 extern const bfd_target bfd_elf32_nbigmips_vec;
 668 extern const bfd_target bfd_elf32_nlittlemips_vec;
 669 extern const bfd_target bfd_elf32_ntradbigmips_vec;
 670 extern const bfd_target bfd_elf32_ntradlittlemips_vec;
 671 extern const bfd_target bfd_elf32_ntradbigmips_freebsd_vec;
 672 extern const bfd_target bfd_elf32_ntradlittlemips_freebsd_vec;
 673 extern const bfd_target bfd_elf32_openrisc_vec;
 674 extern const bfd_target bfd_elf32_or32_big_vec;
 675 extern const bfd_target bfd_elf32_pj_vec;
 676 extern const bfd_target bfd_elf32_pjl_vec;
 677 extern const bfd_target bfd_elf32_powerpc_vec;
 678 extern const bfd_target bfd_elf32_powerpcle_vec;
 679 extern const bfd_target bfd_elf32_powerpc_freebsd_vec;
 680 extern const bfd_target bfd_elf32_powerpc_vxworks_vec;
 681 extern const bfd_target bfd_elf32_rl78_vec;
 682 extern const bfd_target bfd_elf32_rx_le_vec;
 683 extern const bfd_target bfd_elf32_rx_be_vec;
 684 extern const bfd_target bfd_elf32_rx_be_ns_vec;
 685 extern const bfd_target bfd_elf32_s390_vec;
 686 extern const bfd_target bfd_elf32_bigscore_vec;
 687 extern const bfd_target bfd_elf32_littlescore_vec;
 688 extern const bfd_target bfd_elf32_sh64_vec;
 689 extern const bfd_target bfd_elf32_sh64l_vec;
 690 extern const bfd_target bfd_elf32_sh64lin_vec;
 691 extern const bfd_target bfd_elf32_sh64blin_vec;
 692 extern const bfd_target bfd_elf32_sh64lnbsd_vec;
 693 extern const bfd_target bfd_elf32_sh64nbsd_vec;
 694 extern const bfd_target bfd_elf32_sh_vec;
 695 extern const bfd_target bfd_elf32_shbfd_vec;
 696 extern const bfd_target bfd_elf32_shblin_vec;
 697 extern const bfd_target bfd_elf32_shfd_vec;
 698 extern const bfd_target bfd_elf32_shl_vec;
 699 extern const bfd_target bfd_elf32_shl_symbian_vec;
 700 extern const bfd_target bfd_elf32_shlin_vec;
 701 extern const bfd_target bfd_elf32_shlnbsd_vec;
 702 extern const bfd_target bfd_elf32_shlvxworks_vec;
 703 extern const bfd_target bfd_elf32_shnbsd_vec;
 704 extern const bfd_target bfd_elf32_shvxworks_vec;
 705 extern const bfd_target bfd_elf32_sparc_vec;
 706 extern const bfd_target bfd_elf32_sparc_sol2_vec;
 707 extern const bfd_target bfd_elf32_sparc_vxworks_vec;
 708 extern const bfd_target bfd_elf32_spu_vec;
 709 extern const bfd_target bfd_elf32_tic6x_be_vec;
 710 extern const bfd_target bfd_elf32_tic6x_le_vec;
 711 extern const bfd_target bfd_elf32_tic6x_elf_be_vec;
 712 extern const bfd_target bfd_elf32_tic6x_elf_le_vec;
 713 extern const bfd_target bfd_elf32_tic6x_linux_be_vec;
 714 extern const bfd_target bfd_elf32_tic6x_linux_le_vec;
 715 extern const bfd_target bfd_elf32_tilegx_be_vec;
 716 extern const bfd_target bfd_elf32_tilegx_le_vec;
 717 extern const bfd_target bfd_elf32_tilepro_vec;
 718 extern const bfd_target bfd_elf32_tradbigmips_vec;
 719 extern const bfd_target bfd_elf32_tradlittlemips_vec;
 720 extern const bfd_target bfd_elf32_tradbigmips_freebsd_vec;
 721 extern const bfd_target bfd_elf32_tradlittlemips_freebsd_vec;
 722 extern const bfd_target bfd_elf32_us_cris_vec;
 723 extern const bfd_target bfd_elf32_v850_vec;
 724 extern const bfd_target bfd_elf32_vax_vec;
 725 extern const bfd_target bfd_elf32_xc16x_vec;
 726 extern const bfd_target bfd_elf32_xgate_vec;
 727 extern const bfd_target bfd_elf32_xstormy16_vec;
 728 extern const bfd_target bfd_elf32_xtensa_be_vec;
 729 extern const bfd_target bfd_elf32_xtensa_le_vec;
 730 extern const bfd_target bfd_elf64_alpha_freebsd_vec;
 731 extern const bfd_target bfd_elf64_alpha_vec;
 732 extern const bfd_target bfd_elf64_big_generic_vec;
 733 extern const bfd_target bfd_elf64_bigmips_vec;
 734 extern const bfd_target bfd_elf64_bigaarch64_vec;
 735 extern const bfd_target bfd_elf64_hppa_linux_vec;
 736 extern const bfd_target bfd_elf64_hppa_vec;
 737 extern const bfd_target bfd_elf64_ia64_big_vec;
 738 extern const bfd_target bfd_elf64_ia64_hpux_big_vec;
 739 extern const bfd_target bfd_elf64_ia64_little_vec;
 740 extern const bfd_target bfd_elf64_ia64_vms_vec;
 741 extern const bfd_target bfd_elf64_little_generic_vec;
 742 extern const bfd_target bfd_elf64_littlemips_vec;
 743 extern const bfd_target bfd_elf64_littleaarch64_vec;
 744 extern const bfd_target bfd_elf64_mmix_vec;
 745 extern const bfd_target bfd_elf64_powerpc_vec;
 746 extern const bfd_target bfd_elf64_powerpcle_vec;
 747 extern const bfd_target bfd_elf64_powerpc_freebsd_vec;
 748 extern const bfd_target bfd_elf64_s390_vec;
 749 extern const bfd_target bfd_elf64_sh64_vec;
 750 extern const bfd_target bfd_elf64_sh64l_vec;
 751 extern const bfd_target bfd_elf64_sh64lin_vec;
 752 extern const bfd_target bfd_elf64_sh64blin_vec;
 753 extern const bfd_target bfd_elf64_sh64lnbsd_vec;
 754 extern const bfd_target bfd_elf64_sh64nbsd_vec;
 755 extern const bfd_target bfd_elf64_sparc_vec;
 756 extern const bfd_target bfd_elf64_sparc_freebsd_vec;
 757 extern const bfd_target bfd_elf64_sparc_sol2_vec;
 758 extern const bfd_target bfd_elf64_tilegx_be_vec;
 759 extern const bfd_target bfd_elf64_tilegx_le_vec;
 760 extern const bfd_target bfd_elf64_tradbigmips_vec;
 761 extern const bfd_target bfd_elf64_tradlittlemips_vec;
 762 extern const bfd_target bfd_elf64_tradbigmips_freebsd_vec;
 763 extern const bfd_target bfd_elf64_tradlittlemips_freebsd_vec;
 764 extern const bfd_target bfd_elf64_x86_64_freebsd_vec;
 765 extern const bfd_target bfd_elf64_x86_64_nacl_vec;
 766 extern const bfd_target bfd_elf64_x86_64_sol2_vec;
 767 extern const bfd_target bfd_elf64_x86_64_vec;
 768 extern const bfd_target bfd_elf32_x86_64_nacl_vec;
 769 extern const bfd_target bfd_elf32_x86_64_vec;
 770 extern const bfd_target bfd_elf64_l1om_freebsd_vec;
 771 extern const bfd_target bfd_elf64_l1om_vec;
 772 extern const bfd_target bfd_elf64_k1om_freebsd_vec;
 773 extern const bfd_target bfd_elf64_k1om_vec;
 774 extern const bfd_target bfd_mmo_vec;
 775 extern const bfd_target bfd_powerpc_pe_vec;
 776 extern const bfd_target bfd_powerpc_pei_vec;
 777 extern const bfd_target bfd_powerpcle_pe_vec;
 778 extern const bfd_target bfd_powerpcle_pei_vec;
 779 extern const bfd_target cris_aout_vec;
 780 extern const bfd_target demo_64_vec;
 781 extern const bfd_target ecoff_big_vec;
 782 extern const bfd_target ecoff_biglittle_vec;
 783 extern const bfd_target ecoff_little_vec;
 784 extern const bfd_target ecoffalpha_little_vec;
 785 extern const bfd_target go32coff_vec;
 786 extern const bfd_target go32stubbedcoff_vec;
 787 extern const bfd_target h8300coff_vec;
 788 extern const bfd_target h8500coff_vec;
 789 extern const bfd_target host_aout_vec;
 790 extern const bfd_target hp300bsd_vec;
 791 extern const bfd_target hp300hpux_vec;
 792 extern const bfd_target i386aout_vec;
 793 extern const bfd_target i386bsd_vec;
 794 extern const bfd_target i386coff_vec;
 795 extern const bfd_target i386dynix_vec;
 796 extern const bfd_target i386freebsd_vec;
 797 extern const bfd_target i386linux_vec;
 798 extern const bfd_target i386lynx_aout_vec;
 799 extern const bfd_target i386lynx_coff_vec;
 800 extern const bfd_target i386mach3_vec;
 801 extern const bfd_target i386msdos_vec;
 802 extern const bfd_target i386netbsd_vec;
 803 extern const bfd_target i386os9k_vec;
 804 extern const bfd_target i386pe_vec;
 805 extern const bfd_target i386pei_vec;
 806 extern const bfd_target i860coff_vec;
 807 extern const bfd_target icoff_big_vec;
 808 extern const bfd_target icoff_little_vec;
 809 extern const bfd_target ieee_vec;
 810 extern const bfd_target m68k4knetbsd_vec;
 811 extern const bfd_target m68kaux_coff_vec;
 812 extern const bfd_target m68kcoff_vec;
 813 extern const bfd_target m68kcoffun_vec;
 814 extern const bfd_target m68klinux_vec;
 815 extern const bfd_target m68knetbsd_vec;
 816 extern const bfd_target m68ksysvcoff_vec;
 817 extern const bfd_target m88kbcs_vec;
 818 extern const bfd_target m88kmach3_vec;
 819 extern const bfd_target m88kopenbsd_vec;
 820 extern const bfd_target mach_o_be_vec;
 821 extern const bfd_target mach_o_le_vec;
 822 extern const bfd_target mach_o_fat_vec;
 823 extern const bfd_target mach_o_i386_vec;
 824 extern const bfd_target mach_o_x86_64_vec;
 825 extern const bfd_target mcore_pe_big_vec;
 826 extern const bfd_target mcore_pe_little_vec;
 827 extern const bfd_target mcore_pei_big_vec;
 828 extern const bfd_target mcore_pei_little_vec;
 829 extern const bfd_target mipslpe_vec;
 830 extern const bfd_target mipslpei_vec;
 831 extern const bfd_target newsos3_vec;
 832 extern const bfd_target nlm32_alpha_vec;
 833 extern const bfd_target nlm32_i386_vec;
 834 extern const bfd_target nlm32_powerpc_vec;
 835 extern const bfd_target nlm32_sparc_vec;
 836 extern const bfd_target oasys_vec;
 837 extern const bfd_target or32coff_big_vec;
 838 extern const bfd_target pc532machaout_vec;
 839 extern const bfd_target pc532netbsd_vec;
 840 extern const bfd_target pdp11_aout_vec;
 841 extern const bfd_target pef_vec;
 842 extern const bfd_target pef_xlib_vec;
 843 extern const bfd_target plugin_vec;
 844 extern const bfd_target pmac_xcoff_vec;
 845 extern const bfd_target ppcboot_vec;
 846 extern const bfd_target riscix_vec;
 847 extern const bfd_target rs6000coff64_vec;
 848 extern const bfd_target rs6000coff_vec;
 849 extern const bfd_target shcoff_small_vec;
 850 extern const bfd_target shcoff_vec;
 851 extern const bfd_target shlcoff_small_vec;
 852 extern const bfd_target shlcoff_vec;
 853 extern const bfd_target shlpe_vec;
 854 extern const bfd_target shlpei_vec;
 855 extern const bfd_target som_vec;
 856 extern const bfd_target sparccoff_vec;
 857 extern const bfd_target sparcle_aout_vec;
 858 extern const bfd_target sparclinux_vec;
 859 extern const bfd_target sparclynx_aout_vec;
 860 extern const bfd_target sparclynx_coff_vec;
 861 extern const bfd_target sparcnetbsd_vec;
 862 extern const bfd_target sunos_big_vec;
 863 extern const bfd_target sym_vec;
 864 extern const bfd_target tic30_aout_vec;
 865 extern const bfd_target tic30_coff_vec;
 866 extern const bfd_target tic4x_coff0_beh_vec;
 867 extern const bfd_target tic4x_coff0_vec;
 868 extern const bfd_target tic4x_coff1_beh_vec;
 869 extern const bfd_target tic4x_coff1_vec;
 870 extern const bfd_target tic4x_coff2_beh_vec;
 871 extern const bfd_target tic4x_coff2_vec;
 872 extern const bfd_target tic54x_coff0_beh_vec;
 873 extern const bfd_target tic54x_coff0_vec;
 874 extern const bfd_target tic54x_coff1_beh_vec;
 875 extern const bfd_target tic54x_coff1_vec;
 876 extern const bfd_target tic54x_coff2_beh_vec;
 877 extern const bfd_target tic54x_coff2_vec;
 878 extern const bfd_target tic80coff_vec;
 879 extern const bfd_target vaxbsd_vec;
 880 extern const bfd_target vaxnetbsd_vec;
 881 extern const bfd_target vax1knetbsd_vec;
 882 extern const bfd_target versados_vec;
 883 extern const bfd_target vms_alpha_vec;
 884 extern const bfd_target vms_lib_txt_vec;
 885 extern const bfd_target w65_vec;
 886 extern const bfd_target we32kcoff_vec;
 887 extern const bfd_target x86_64pe_vec;
 888 extern const bfd_target x86_64pei_vec;
 889 extern const bfd_target x86_64coff_vec;
 890 extern const bfd_target z80coff_vec;
 891 extern const bfd_target z8kcoff_vec;
 892
 893 /* These are always included.  */
 894 extern const bfd_target srec_vec;
 895 extern const bfd_target verilog_vec;
 896 extern const bfd_target symbolsrec_vec;
 897 extern const bfd_target tekhex_vec;
 898 extern const bfd_target binary_vec;
 899 extern const bfd_target ihex_vec;
 900
 901 /* All of the xvecs for core files.  */
 902 extern const bfd_target aix386_core_vec;
 903 extern const bfd_target cisco_core_big_vec;
 904 extern const bfd_target cisco_core_little_vec;
 905 extern const bfd_target hppabsd_core_vec;
 906 extern const bfd_target hpux_core_vec;
 907 extern const bfd_target irix_core_vec;
 908 extern const bfd_target netbsd_core_vec;
 909 extern const bfd_target osf_core_vec;
 910 extern const bfd_target ptrace_core_vec;
 911 extern const bfd_target sco5_core_vec;
 912 extern const bfd_target trad_core_vec;
 913
 914 extern const bfd_target bfd_elf32_am33lin_vec;
 915 static const bfd_target * const _bfd_target_vector[] =
 916 {
 917 #ifdef SELECT_VECS
 918
 919         SELECT_VECS,
 920
 921 #else /* not SELECT_VECS */
 922
 923 #ifdef DEFAULT_VECTOR
 924         &DEFAULT_VECTOR,
 925 #endif
 926         /* This list is alphabetized to make it easy to compare
 927            with other vector lists -- the decls above and
 928            the case statement in configure.in.
 929            Vectors that don't compile on all systems, or aren't finished,
 930            should have an entry here with #if 0 around it, to show that
 931            it wasn't omitted by mistake.  */
 932         &a_out_adobe_vec,
 933 #ifdef BFD64
 934         &aix5coff64_vec,
 935 #endif
 936         &aout0_big_vec,
 937 #if 0
 938         /* We have no way of distinguishing these from other a.out variants.  */
 939         &aout_arm_big_vec,
 940         &aout_arm_little_vec,
 941         /* No one seems to use this.  */
 942         &aout_mips_big_vec,
 943 #endif
 944         &aout_mips_little_vec,
 945 #if 0
 946         &apollocoff_vec,
 947 #endif
 948         &arm_epoc_pe_big_vec,
 949         &arm_epoc_pe_little_vec,
 950         &arm_epoc_pei_big_vec,
 951         &arm_epoc_pei_little_vec,
 952         &arm_wince_pe_big_vec,
 953         &arm_wince_pe_little_vec,
 954         &arm_wince_pei_big_vec,
 955         &arm_wince_pei_little_vec,
 956         &armcoff_big_vec,
 957         &armcoff_little_vec,
 958         &armnetbsd_vec,
 959         &armpe_big_vec,
 960         &armpe_little_vec,
 961         &armpei_big_vec,
 962         &armpei_little_vec,
 963         &b_out_vec_big_host,
 964         &b_out_vec_little_host,
 965 #ifdef BFD64
 966         &bfd_pei_ia64_vec,
 967 #endif
 968         &bfd_elf32_avr_vec,
 969         &bfd_elf32_bfin_vec,
 970         &bfd_elf32_bfinfdpic_vec,
 971
 972         /* This, and other vectors, may not be used in any *.mt configuration.
 973            But that does not mean they are unnecessary.  If configured with
 974            --enable-targets=all, objdump or gdb should be able to examine
 975            the file even if we don't recognize the machine type.  */
 976         &bfd_elf32_big_generic_vec,
 977         &bfd_elf32_bigarc_vec,
 978         &bfd_elf32_bigarm_vec,
 979         &bfd_elf32_bigarm_symbian_vec,
 980         &bfd_elf32_bigarm_vxworks_vec,
 981         &bfd_elf32_bigmips_vec,
 982         &bfd_elf32_bigmips_vxworks_vec,
 983         &bfd_elf32_bigmoxie_vec,
 984         &bfd_elf32_cr16_vec,
 985         &bfd_elf32_cr16c_vec,
 986         &bfd_elf32_cris_vec,
 987         &bfd_elf32_crx_vec,
 988         &bfd_elf32_d10v_vec,
 989         &bfd_elf32_d30v_vec,
 990         &bfd_elf32_dlx_big_vec,
 991         &bfd_elf32_epiphany_vec,
 992         &bfd_elf32_fr30_vec,
 993         &bfd_elf32_frv_vec,
 994         &bfd_elf32_frvfdpic_vec,
 995         &bfd_elf32_h8300_vec,
 996         &bfd_elf32_hppa_linux_vec,
 997         &bfd_elf32_hppa_nbsd_vec,
 998         &bfd_elf32_hppa_vec,
 999         &bfd_elf32_i370_vec,
1000         &bfd_elf32_i386_freebsd_vec,
1001         &bfd_elf32_i386_nacl_vec,
1002         &bfd_elf32_i386_sol2_vec,
1003         &bfd_elf32_i386_vxworks_vec,
1004         &bfd_elf32_i386_vec,
1005         &bfd_elf32_i860_little_vec,
1006         &bfd_elf32_i860_vec,
1007         &bfd_elf32_i960_vec,
1008 #if 0
1009         &bfd_elf32_ia64_big_vec,
1010 #endif
1011 #ifdef BFD64
1012         &bfd_elf32_ia64_hpux_big_vec,
1013 #endif
1014         &bfd_elf32_ip2k_vec,
1015         &bfd_elf32_iq2000_vec,
1016         &bfd_elf32_lm32_vec,
1017         &bfd_elf32_little_generic_vec,
1018         &bfd_elf32_littlearc_vec,
1019         &bfd_elf32_littlearm_vec,
1020         &bfd_elf32_littlearm_symbian_vec,
1021         &bfd_elf32_littlearm_vxworks_vec,
1022         &bfd_elf32_littlemips_vec,
1023         &bfd_elf32_littlemips_vxworks_vec,
1024         &bfd_elf32_littlemoxie_vec,
1025         &bfd_elf32_m32c_vec,
1026         &bfd_elf32_m32r_vec,
1027         &bfd_elf32_m32rle_vec,
1028         &bfd_elf32_m32rlin_vec,
1029         &bfd_elf32_m32rlelin_vec,
1030         &bfd_elf32_m68hc11_vec,
1031         &bfd_elf32_m68hc12_vec,
1032         &bfd_elf32_m68k_vec,
1033         &bfd_elf32_m88k_vec,
1034         &bfd_elf32_mcore_big_vec,
1035         &bfd_elf32_mcore_little_vec,
1036         &bfd_elf32_mep_vec,
1037         &bfd_elf32_microblaze_vec,
1038         &bfd_elf32_mn10200_vec,
1039         &bfd_elf32_mn10300_vec,
1040         &bfd_elf32_mt_vec,
1041         &bfd_elf32_msp430_vec,
1042 #ifdef BFD64
1043         &bfd_elf32_nbigmips_vec,
1044         &bfd_elf32_nlittlemips_vec,
1045         &bfd_elf32_ntradbigmips_vec,
1046         &bfd_elf32_ntradlittlemips_vec,
1047         &bfd_elf32_ntradbigmips_freebsd_vec,
1048         &bfd_elf32_ntradlittlemips_freebsd_vec,
1049 #endif
1050         &bfd_elf32_openrisc_vec,
1051         &bfd_elf32_or32_big_vec,
1052         &bfd_elf32_pj_vec,
1053         &bfd_elf32_pjl_vec,
1054         &bfd_elf32_powerpc_vec,
1055         &bfd_elf32_powerpc_vxworks_vec,
1056         &bfd_elf32_powerpcle_vec,
1057         &bfd_elf32_powerpc_freebsd_vec,
1058         &bfd_elf32_rl78_vec,
1059         &bfd_elf32_rx_be_vec,
1060         &bfd_elf32_rx_be_ns_vec,
1061         &bfd_elf32_rx_le_vec,
1062         &bfd_elf32_s390_vec,
1063 #ifdef BFD64
1064         &bfd_elf32_bigscore_vec,
1065         &bfd_elf32_littlescore_vec,
1066 #endif
1067         &bfd_elf32_sh_vec,
1068         &bfd_elf32_shbfd_vec,
1069         &bfd_elf32_shblin_vec,
1070         &bfd_elf32_shfd_vec,
1071         &bfd_elf32_shl_vec,
1072         &bfd_elf32_shl_symbian_vec,
1073         &bfd_elf32_shlin_vec,
1074         &bfd_elf32_shlnbsd_vec,
1075         &bfd_elf32_shlvxworks_vec,
1076         &bfd_elf32_shnbsd_vec,
1077         &bfd_elf32_shvxworks_vec,
1078 #ifdef BFD64
1079         &bfd_elf32_sh64_vec,
1080         &bfd_elf32_sh64l_vec,
1081         &bfd_elf32_sh64lnbsd_vec,
1082         &bfd_elf32_sh64nbsd_vec,
1083         &bfd_elf32_sh64lin_vec,
1084         &bfd_elf32_sh64blin_vec,
1085 #endif
1086         &bfd_elf32_sparc_vec,
1087         &bfd_elf32_sparc_sol2_vec,
1088         &bfd_elf32_sparc_vxworks_vec,
1089         &bfd_elf32_spu_vec,
1090         &bfd_elf32_tic6x_be_vec,
1091         &bfd_elf32_tic6x_le_vec,
1092         &bfd_elf32_tilegx_be_vec,
1093         &bfd_elf32_tilegx_le_vec,
1094         &bfd_elf32_tilepro_vec,
1095         &bfd_elf32_tradbigmips_vec,
1096         &bfd_elf32_tradlittlemips_vec,
1097         &bfd_elf32_tradbigmips_freebsd_vec,
1098         &bfd_elf32_tradlittlemips_freebsd_vec,
1099         &bfd_elf32_us_cris_vec,
1100         &bfd_elf32_v850_vec,
1101         &bfd_elf32_vax_vec,
1102         &bfd_elf32_xc16x_vec,
1103         &bfd_elf32_xgate_vec,
1104         &bfd_elf32_xstormy16_vec,
1105         &bfd_elf32_xtensa_be_vec,
1106         &bfd_elf32_xtensa_le_vec,
1107 #ifdef BFD64
1108         &bfd_elf64_alpha_freebsd_vec,
1109         &bfd_elf64_alpha_vec,
1110         &bfd_elf64_big_generic_vec,
1111         &bfd_elf64_bigmips_vec,
1112         &bfd_elf64_bigaarch64_vec,
1113         &bfd_elf64_hppa_linux_vec,
1114         &bfd_elf64_hppa_vec,
1115         &bfd_elf64_ia64_big_vec,
1116         &bfd_elf64_ia64_hpux_big_vec,
1117         &bfd_elf64_ia64_little_vec,
1118         &bfd_elf64_ia64_vms_vec,
1119         &bfd_elf64_little_generic_vec,
1120         &bfd_elf64_littlemips_vec,
1121         &bfd_elf64_littleaarch64_vec,
1122         &bfd_elf64_mmix_vec,
1123         &bfd_elf64_powerpc_vec,
1124         &bfd_elf64_powerpcle_vec,
1125         &bfd_elf64_powerpc_freebsd_vec,
1126         &bfd_elf64_s390_vec,
1127         &bfd_elf64_sh64_vec,
1128         &bfd_elf64_sh64l_vec,
1129         &bfd_elf64_sh64lnbsd_vec,
1130         &bfd_elf64_sh64nbsd_vec,
1131         &bfd_elf64_sh64lin_vec,
1132         &bfd_elf64_sh64blin_vec,
1133         &bfd_elf64_sparc_vec,
1134         &bfd_elf64_sparc_freebsd_vec,
1135         &bfd_elf64_sparc_sol2_vec,
1136         &bfd_elf64_tilegx_be_vec,
1137         &bfd_elf64_tilegx_le_vec,
1138         &bfd_elf64_tradbigmips_vec,
1139         &bfd_elf64_tradlittlemips_vec,
1140         &bfd_elf64_tradbigmips_freebsd_vec,
1141         &bfd_elf64_tradlittlemips_freebsd_vec,
1142         &bfd_elf64_x86_64_freebsd_vec,
1143         &bfd_elf64_x86_64_nacl_vec,
1144         &bfd_elf64_x86_64_sol2_vec,
1145         &bfd_elf64_x86_64_vec,
1146         &bfd_elf32_x86_64_nacl_vec,
1147         &bfd_elf32_x86_64_vec,
1148         &bfd_elf64_l1om_freebsd_vec,
1149         &bfd_elf64_l1om_vec,
1150         &bfd_elf64_k1om_freebsd_vec,
1151         &bfd_elf64_k1om_vec,
1152         &bfd_mmo_vec,
1153 #endif
1154         &bfd_powerpc_pe_vec,
1155         &bfd_powerpc_pei_vec,
1156         &bfd_powerpcle_pe_vec,
1157         &bfd_powerpcle_pei_vec,
1158         &cris_aout_vec,
1159 #ifdef BFD64
1160         &demo_64_vec,   /* Only compiled if host has long-long support.  */
1161 #endif
1162         &ecoff_big_vec,
1163         &ecoff_biglittle_vec,
1164         &ecoff_little_vec,
1165 #ifdef BFD64
1166         &ecoffalpha_little_vec,
1167 #endif
1168         &go32coff_vec,
1169         &go32stubbedcoff_vec,
1170         &h8300coff_vec,
1171         &h8500coff_vec,
1172 #if 0
1173         /* Since a.out files lack decent magic numbers, no way to recognize
1174            which kind of a.out file it is.  */
1175         &host_aout_vec,
1176         /* Clashes with sunos_big_vec magic no.  */
1177         &hp300bsd_vec,
1178 #endif
1179         &hp300hpux_vec,
1180         &i386aout_vec,
1181         &i386bsd_vec,
1182         &i386coff_vec,
1183 #if 0
1184         &i386dynix_vec,
1185 #endif
1186         &i386freebsd_vec,
1187 #if 0
1188         /* Since a.out files lack decent magic numbers, no way to recognize
1189            which kind of a.out file it is.  */
1190         &i386linux_vec,
1191 #endif
1192         &i386lynx_aout_vec,
1193         &i386lynx_coff_vec,
1194 #if 0
1195         /* No distinguishing features for Mach 3 executables.  */
1196         &i386mach3_vec,
1197 #endif
1198         &i386msdos_vec,
1199         &i386netbsd_vec,
1200         &i386os9k_vec,
1201         &i386pe_vec,
1202         &i386pei_vec,
1203 #ifdef BFD64
1204         &x86_64coff_vec,
1205         &x86_64pe_vec,
1206         &x86_64pei_vec,
1207 #endif
1208         &i860coff_vec,
1209         &icoff_big_vec,
1210         &icoff_little_vec,
1211         &ieee_vec,
1212 #if 0
1213         &m68k4knetbsd_vec,
1214         &m68kaux_coff_vec,
1215 #endif
1216         &m68kcoff_vec,
1217         &m68kcoffun_vec,
1218 #if 0
1219         /* Since a.out files lack decent magic numbers, no way to recognize
1220            which kind of a.out file it is.  */
1221         &m68klinux_vec,
1222 #endif
1223         &m68knetbsd_vec,
1224         &m68ksysvcoff_vec,
1225         &m88kbcs_vec,
1226         &m88kmach3_vec,
1227         &m88kopenbsd_vec,
1228         &mach_o_be_vec,
1229         &mach_o_le_vec,
1230         &mach_o_fat_vec,
1231         &mach_o_i386_vec,
1232 #ifdef BFD64
1233         &mach_o_x86_64_vec,
1234 #endif
1235         &mcore_pe_big_vec,
1236         &mcore_pe_little_vec,
1237         &mcore_pei_big_vec,
1238         &mcore_pei_little_vec,
1239         &mipslpe_vec,
1240         &mipslpei_vec,
1241         &newsos3_vec,
1242 #ifdef BFD64
1243         &nlm32_alpha_vec,
1244 #endif
1245         &nlm32_i386_vec,
1246         &nlm32_powerpc_vec,
1247         &nlm32_sparc_vec,
1248 #if 0
1249         /* We have no oasys tools anymore, so we can't test any of this
1250            anymore. If you want to test the stuff yourself, go ahead...
1251            steve@cygnus.com
1252            Worse, since there is no magic number for archives, there
1253            can be annoying target mis-matches.  */
1254         &oasys_vec,
1255 #endif
1256         /* Entry for the OpenRISC family.  */
1257         &or32coff_big_vec,
1258
1259         &pc532machaout_vec,
1260         &pc532netbsd_vec,
1261         &pdp11_aout_vec,
1262         &pef_vec,
1263         &pef_xlib_vec,
1264 #if BFD_SUPPORTS_PLUGINS
1265         &plugin_vec,
1266 #endif
1267 #if 0
1268         /* This has the same magic number as RS/6000.  */
1269         &pmac_xcoff_vec,
1270 #endif
1271         &ppcboot_vec,
1272 #if 0
1273         /* We have no way of distinguishing these from other a.out variants.  */
1274         &riscix_vec,
1275 #endif
1276 #ifdef BFD64
1277         &rs6000coff64_vec,
1278 #endif
1279         &rs6000coff_vec,
1280         &shcoff_small_vec,
1281         &shcoff_vec,
1282         &shlcoff_small_vec,
1283         &shlcoff_vec,
1284         &shlpe_vec,
1285         &shlpei_vec,
1286         &som_vec,
1287         &sparccoff_vec,
1288         &sparcle_aout_vec,
1289         &sparclinux_vec,
1290         &sparclynx_aout_vec,
1291         &sparclynx_coff_vec,
1292         &sparcnetbsd_vec,
1293         &sunos_big_vec,
1294         &sym_vec,
1295         &tic30_aout_vec,
1296         &tic30_coff_vec,
1297         &tic54x_coff0_beh_vec,
1298         &tic54x_coff0_vec,
1299         &tic54x_coff1_beh_vec,
1300         &tic54x_coff1_vec,
1301         &tic54x_coff2_beh_vec,
1302         &tic54x_coff2_vec,
1303         &tic80coff_vec,
1304         &vaxbsd_vec,
1305         &vaxnetbsd_vec,
1306         &vax1knetbsd_vec,
1307         &versados_vec,
1308 #ifdef BFD64
1309         &vms_alpha_vec,
1310 #endif
1311         &vms_lib_txt_vec,
1312         &w65_vec,
1313         &we32kcoff_vec,
1314         &z80coff_vec,
1315         &z8kcoff_vec,
1316         &bfd_elf32_am33lin_vec,
1317 #endif /* not SELECT_VECS */
1318
1319 /* Always support S-records, for convenience.  */
1320         &srec_vec,
1321         &symbolsrec_vec,
1322 /* And verilog.  */
1323         &verilog_vec,
1324 /* And tekhex */
1325         &tekhex_vec,
1326 /* Likewise for binary output.  */
1327         &binary_vec,
1328 /* Likewise for ihex.  */
1329         &ihex_vec,
1330
1331 /* Add any required traditional-core-file-handler.  */
1332
1333 #ifdef AIX386_CORE
1334         &aix386_core_vec,
1335 #endif
1336 #if 0
1337         /* We don't include cisco_core_*_vec.  Although it has a magic number,
1338            the magic number isn't at the beginning of the file, and thus
1339            might spuriously match other kinds of files.  */
1340         &cisco_core_big_vec,
1341         &cisco_core_little_vec,
1342 #endif
1343 #ifdef HPPABSD_CORE
1344         &hppabsd_core_vec,
1345 #endif
1346 #ifdef HPUX_CORE
1347         &hpux_core_vec,
1348 #endif
1349 #ifdef IRIX_CORE
1350         &irix_core_vec,
1351 #endif
1352 #ifdef NETBSD_CORE
1353         &netbsd_core_vec,
1354 #endif
1355 #ifdef OSF_CORE
1356         &osf_core_vec,
1357 #endif
1358 #ifdef PTRACE_CORE
1359         &ptrace_core_vec,
1360 #endif
1361 #ifdef SCO5_CORE
1362         &sco5_core_vec,
1363 #endif
1364 #ifdef TRAD_CORE
1365         &trad_core_vec,
1366 #endif
1367
1368         NULL /* end of list marker */
1369 };
1370 const bfd_target * const *bfd_target_vector = _bfd_target_vector;
1371
1372 /* bfd_default_vector[0] contains either the address of the default vector,
1373    if there is one, or zero if there isn't.  */
1374
1375 const bfd_target *bfd_default_vector[] = {
1376 #ifdef DEFAULT_VECTOR
1377         &DEFAULT_VECTOR,
1378 #endif
1379         NULL
1380 };
1381
1382 /* bfd_associated_vector[] contains the associated target vectors used
1383    to reduce the ambiguity in bfd_check_format_matches.  */
1384
1385 static const bfd_target *_bfd_associated_vector[] = {
1386 #ifdef ASSOCIATED_VECS
1387         ASSOCIATED_VECS,
1388 #endif
1389         NULL
1390 };
1391 const bfd_target * const *bfd_associated_vector = _bfd_associated_vector;
1392
1393 /* When there is an ambiguous match, bfd_check_format_matches puts the
1394    names of the matching targets in an array.  This variable is the maximum
1395    number of entries that the array could possibly need.  */
1396 const size_t _bfd_target_vector_entries = sizeof (_bfd_target_vector)/sizeof (*_bfd_target_vector);
1397 \f
1398 /* This array maps configuration triplets onto BFD vectors.  */
1399
1400 struct targmatch
1401 {
1402   /* The configuration triplet.  */
1403   const char *triplet;
1404   /* The BFD vector.  If this is NULL, then the vector is found by
1405      searching forward for the next structure with a non NULL vector
1406      field.  */
1407   const bfd_target *vector;
1408 };
1409
1410 /* targmatch.h is built by Makefile out of config.bfd.  */
1411 static const struct targmatch bfd_target_match[] = {
1412 #include "targmatch.h"
1413   { NULL, NULL }
1414 };
1415
1416 /* Find a target vector, given a name or configuration triplet.  */
1417
1418 static const bfd_target *
1419 find_target (const char *name)
1420 {
1421   const bfd_target * const *target;
1422   const struct targmatch *match;
1423
1424   for (target = &bfd_target_vector[0]; *target != NULL; target++)
1425     if (strcmp (name, (*target)->name) == 0)
1426       return *target;
1427
1428   /* If we couldn't match on the exact name, try matching on the
1429      configuration triplet.  FIXME: We should run the triplet through
1430      config.sub first, but that is hard.  */
1431   for (match = &bfd_target_match[0]; match->triplet != NULL; match++)
1432     {
1433       if (fnmatch (match->triplet, name, 0) == 0)
1434         {
1435           while (match->vector == NULL)
1436             ++match;
1437           return match->vector;
1438         }
1439     }
1440
1441   bfd_set_error (bfd_error_invalid_target);
1442   return NULL;
1443 }
1444
1445 /*
1446 FUNCTION
1447         bfd_set_default_target
1448
1449 SYNOPSIS
1450         bfd_boolean bfd_set_default_target (const char *name);
1451
1452 DESCRIPTION
1453         Set the default target vector to use when recognizing a BFD.
1454         This takes the name of the target, which may be a BFD target
1455         name or a configuration triplet.
1456 */
1457
1458 bfd_boolean
1459 bfd_set_default_target (const char *name)
1460 {
1461   const bfd_target *target;
1462
1463   if (bfd_default_vector[0] != NULL
1464       && strcmp (name, bfd_default_vector[0]->name) == 0)
1465     return TRUE;
1466
1467   target = find_target (name);
1468   if (target == NULL)
1469     return FALSE;
1470
1471   bfd_default_vector[0] = target;
1472   return TRUE;
1473 }
1474
1475 /*
1476 FUNCTION
1477         bfd_find_target
1478
1479 SYNOPSIS
1480         const bfd_target *bfd_find_target (const char *target_name, bfd *abfd);
1481
1482 DESCRIPTION
1483         Return a pointer to the transfer vector for the object target
1484         named @var{target_name}.  If @var{target_name} is <<NULL>>,
1485         choose the one in the environment variable <<GNUTARGET>>; if
1486         that is null or not defined, then choose the first entry in the
1487         target list.  Passing in the string "default" or setting the
1488         environment variable to "default" will cause the first entry in
1489         the target list to be returned, and "target_defaulted" will be
1490         set in the BFD if @var{abfd} isn't <<NULL>>.  This causes
1491         <<bfd_check_format>> to loop over all the targets to find the
1492         one that matches the file being read.
1493 */
1494
1495 const bfd_target *
1496 bfd_find_target (const char *target_name, bfd *abfd)
1497 {
1498   const char *targname;
1499   const bfd_target *target;
1500
1501   if (target_name != NULL)
1502     targname = target_name;
1503   else
1504     targname = getenv ("GNUTARGET");
1505
1506   /* This is safe; the vector cannot be null.  */
1507   if (targname == NULL || strcmp (targname, "default") == 0)
1508     {
1509       if (bfd_default_vector[0] != NULL)
1510         target = bfd_default_vector[0];
1511       else
1512         target = bfd_target_vector[0];
1513       if (abfd)
1514         {
1515           abfd->xvec = target;
1516           abfd->target_defaulted = TRUE;
1517         }
1518       return target;
1519     }
1520
1521   if (abfd)
1522     abfd->target_defaulted = FALSE;
1523
1524   target = find_target (targname);
1525   if (target == NULL)
1526     return NULL;
1527
1528   if (abfd)
1529     abfd->xvec = target;
1530   return target;
1531 }
1532
1533 /* Helper function for bfd_get_target_info to determine the target's
1534    architecture.  This method handles bfd internal target names as
1535    tuples and triplets.  */
1536 static bfd_boolean
1537 _bfd_find_arch_match (const char *tname, const char **arch,
1538                       const char **def_target_arch)
1539 {
1540   if (!arch)
1541     return FALSE;
1542
1543   while (*arch != NULL)
1544     {
1545       const char *in_a = strstr (*arch, tname);
1546       char end_ch = (in_a ? in_a[strlen (tname)] : 0);
1547
1548       if (in_a && (in_a == *arch || in_a[-1] == ':')
1549           && end_ch == 0)
1550         {
1551           *def_target_arch = *arch;
1552           return TRUE;
1553         }
1554       arch++;
1555     }
1556   return FALSE;
1557 }
1558
1559 /*
1560 FUNCTION
1561         bfd_get_target_info
1562 SYNOPSIS
1563         const bfd_target *bfd_get_target_info (const char *target_name,
1564                                                bfd *abfd,
1565                                                bfd_boolean *is_bigendian,
1566                                                int *underscoring,
1567                                                const char **def_target_arch);
1568 DESCRIPTION
1569         Return a pointer to the transfer vector for the object target
1570         named @var{target_name}.  If @var{target_name} is <<NULL>>,
1571         choose the one in the environment variable <<GNUTARGET>>; if
1572         that is null or not defined, then choose the first entry in the
1573         target list.  Passing in the string "default" or setting the
1574         environment variable to "default" will cause the first entry in
1575         the target list to be returned, and "target_defaulted" will be
1576         set in the BFD if @var{abfd} isn't <<NULL>>.  This causes
1577         <<bfd_check_format>> to loop over all the targets to find the
1578         one that matches the file being read.
1579         If @var{is_bigendian} is not <<NULL>>, then set this value to target's
1580         endian mode. True for big-endian, FALSE for little-endian or for
1581         invalid target.
1582         If @var{underscoring} is not <<NULL>>, then set this value to target's
1583         underscoring mode. Zero for none-underscoring, -1 for invalid target,
1584         else the value of target vector's symbol underscoring.
1585         If @var{def_target_arch} is not <<NULL>>, then set it to the architecture
1586         string specified by the target_name.
1587 */
1588 const bfd_target *
1589 bfd_get_target_info (const char *target_name, bfd *abfd,
1590                      bfd_boolean *is_bigendian,
1591                      int *underscoring, const char **def_target_arch)
1592 {
1593   const bfd_target *target_vec;
1594
1595   if (is_bigendian)
1596     *is_bigendian = FALSE;
1597   if (underscoring)
1598     *underscoring = -1;
1599   if (def_target_arch)
1600     *def_target_arch = NULL;
1601   target_vec = bfd_find_target (target_name, abfd);
1602   if (! target_vec)
1603     return NULL;
1604   if (is_bigendian)
1605     *is_bigendian = ((target_vec->byteorder == BFD_ENDIAN_BIG) ? TRUE
1606                                                                : FALSE);
1607   if (underscoring)
1608     *underscoring = ((int) target_vec->symbol_leading_char) & 0xff;
1609
1610   if (def_target_arch)
1611     {
1612       const char *tname = target_vec->name;
1613       const char **arches = bfd_arch_list ();
1614
1615       if (arches && tname)
1616         {
1617           char *hyp = strchr (tname, '-');
1618
1619           if (hyp != NULL)
1620             {
1621               tname = ++hyp;
1622
1623               /* Make sure we detect architecture names
1624                  for triplets like "pe-arm-wince-little".  */
1625               if (!_bfd_find_arch_match (tname, arches, def_target_arch))
1626                 {
1627                   char new_tname[50];
1628
1629                   strcpy (new_tname, hyp);
1630                   while ((hyp = strrchr (new_tname, '-')) != NULL)
1631                     {
1632                       *hyp = 0;
1633                       if (_bfd_find_arch_match (new_tname, arches,
1634                                                 def_target_arch))
1635                         break;
1636                     }
1637                 }
1638             }
1639           else
1640             _bfd_find_arch_match (tname, arches, def_target_arch);
1641         }
1642
1643       if (arches)
1644         free (arches);
1645     }
1646   return target_vec;
1647 }
1648
1649 /*
1650 FUNCTION
1651         bfd_target_list
1652
1653 SYNOPSIS
1654         const char ** bfd_target_list (void);
1655
1656 DESCRIPTION
1657         Return a freshly malloced NULL-terminated
1658         vector of the names of all the valid BFD targets. Do not
1659         modify the names.
1660
1661 */
1662
1663 const char **
1664 bfd_target_list (void)
1665 {
1666   int vec_length = 0;
1667   bfd_size_type amt;
1668   const bfd_target * const *target;
1669   const  char **name_list, **name_ptr;
1670
1671   for (target = &bfd_target_vector[0]; *target != NULL; target++)
1672     vec_length++;
1673
1674   amt = (vec_length + 1) * sizeof (char **);
1675   name_ptr = name_list = (const  char **) bfd_malloc (amt);
1676
1677   if (name_list == NULL)
1678     return NULL;
1679
1680   for (target = &bfd_target_vector[0]; *target != NULL; target++)
1681     if (target == &bfd_target_vector[0]
1682         || *target != bfd_target_vector[0])
1683       *name_ptr++ = (*target)->name;
1684
1685   *name_ptr = NULL;
1686   return name_list;
1687 }
1688
1689 /*
1690 FUNCTION
1691         bfd_seach_for_target
1692
1693 SYNOPSIS
1694         const bfd_target *bfd_search_for_target
1695           (int (*search_func) (const bfd_target *, void *),
1696            void *);
1697
1698 DESCRIPTION
1699         Return a pointer to the first transfer vector in the list of
1700         transfer vectors maintained by BFD that produces a non-zero
1701         result when passed to the function @var{search_func}.  The
1702         parameter @var{data} is passed, unexamined, to the search
1703         function.
1704 */
1705
1706 const bfd_target *
1707 bfd_search_for_target (int (*search_func) (const bfd_target *, void *),
1708                        void *data)
1709 {
1710   const bfd_target * const *target;
1711
1712   for (target = bfd_target_vector; *target != NULL; target ++)
1713     if (search_func (*target, data))
1714       return *target;
1715
1716   return NULL;
1717 }