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_microblazeel_vec;
 663 extern const bfd_target bfd_elf32_microblaze_vec;
 664 extern const bfd_target bfd_elf32_mn10200_vec;
 665 extern const bfd_target bfd_elf32_mn10300_vec;
 666 extern const bfd_target bfd_elf32_mt_vec;
 667 extern const bfd_target bfd_elf32_msp430_vec;
 668 extern const bfd_target bfd_elf32_nbigmips_vec;
 669 extern const bfd_target bfd_elf32_nlittlemips_vec;
 670 extern const bfd_target bfd_elf32_ntradbigmips_vec;
 671 extern const bfd_target bfd_elf32_ntradlittlemips_vec;
 672 extern const bfd_target bfd_elf32_ntradbigmips_freebsd_vec;
 673 extern const bfd_target bfd_elf32_ntradlittlemips_freebsd_vec;
 674 extern const bfd_target bfd_elf32_openrisc_vec;
 675 extern const bfd_target bfd_elf32_or32_big_vec;
 676 extern const bfd_target bfd_elf32_pj_vec;
 677 extern const bfd_target bfd_elf32_pjl_vec;
 678 extern const bfd_target bfd_elf32_powerpc_vec;
 679 extern const bfd_target bfd_elf32_powerpcle_vec;
 680 extern const bfd_target bfd_elf32_powerpc_freebsd_vec;
 681 extern const bfd_target bfd_elf32_powerpc_vxworks_vec;
 682 extern const bfd_target bfd_elf32_rl78_vec;
 683 extern const bfd_target bfd_elf32_rx_le_vec;
 684 extern const bfd_target bfd_elf32_rx_be_vec;
 685 extern const bfd_target bfd_elf32_rx_be_ns_vec;
 686 extern const bfd_target bfd_elf32_s390_vec;
 687 extern const bfd_target bfd_elf32_bigscore_vec;
 688 extern const bfd_target bfd_elf32_littlescore_vec;
 689 extern const bfd_target bfd_elf32_sh64_vec;
 690 extern const bfd_target bfd_elf32_sh64l_vec;
 691 extern const bfd_target bfd_elf32_sh64lin_vec;
 692 extern const bfd_target bfd_elf32_sh64blin_vec;
 693 extern const bfd_target bfd_elf32_sh64lnbsd_vec;
 694 extern const bfd_target bfd_elf32_sh64nbsd_vec;
 695 extern const bfd_target bfd_elf32_sh_vec;
 696 extern const bfd_target bfd_elf32_shbfd_vec;
 697 extern const bfd_target bfd_elf32_shblin_vec;
 698 extern const bfd_target bfd_elf32_shfd_vec;
 699 extern const bfd_target bfd_elf32_shl_vec;
 700 extern const bfd_target bfd_elf32_shl_symbian_vec;
 701 extern const bfd_target bfd_elf32_shlin_vec;
 702 extern const bfd_target bfd_elf32_shlnbsd_vec;
 703 extern const bfd_target bfd_elf32_shlvxworks_vec;
 704 extern const bfd_target bfd_elf32_shnbsd_vec;
 705 extern const bfd_target bfd_elf32_shvxworks_vec;
 706 extern const bfd_target bfd_elf32_sparc_vec;
 707 extern const bfd_target bfd_elf32_sparc_sol2_vec;
 708 extern const bfd_target bfd_elf32_sparc_vxworks_vec;
 709 extern const bfd_target bfd_elf32_spu_vec;
 710 extern const bfd_target bfd_elf32_tic6x_be_vec;
 711 extern const bfd_target bfd_elf32_tic6x_le_vec;
 712 extern const bfd_target bfd_elf32_tic6x_elf_be_vec;
 713 extern const bfd_target bfd_elf32_tic6x_elf_le_vec;
 714 extern const bfd_target bfd_elf32_tic6x_linux_be_vec;
 715 extern const bfd_target bfd_elf32_tic6x_linux_le_vec;
 716 extern const bfd_target bfd_elf32_tilegx_be_vec;
 717 extern const bfd_target bfd_elf32_tilegx_le_vec;
 718 extern const bfd_target bfd_elf32_tilepro_vec;
 719 extern const bfd_target bfd_elf32_tradbigmips_vec;
 720 extern const bfd_target bfd_elf32_tradlittlemips_vec;
 721 extern const bfd_target bfd_elf32_tradbigmips_freebsd_vec;
 722 extern const bfd_target bfd_elf32_tradlittlemips_freebsd_vec;
 723 extern const bfd_target bfd_elf32_us_cris_vec;
 724 extern const bfd_target bfd_elf32_v850_vec;
 725 extern const bfd_target bfd_elf32_v850_rh850_vec;
 726 extern const bfd_target bfd_elf32_vax_vec;
 727 extern const bfd_target bfd_elf32_xc16x_vec;
 728 extern const bfd_target bfd_elf32_xgate_vec;
 729 extern const bfd_target bfd_elf32_xstormy16_vec;
 730 extern const bfd_target bfd_elf32_xtensa_be_vec;
 731 extern const bfd_target bfd_elf32_xtensa_le_vec;
 732 extern const bfd_target bfd_elf64_alpha_freebsd_vec;
 733 extern const bfd_target bfd_elf64_alpha_vec;
 734 extern const bfd_target bfd_elf64_big_generic_vec;
 735 extern const bfd_target bfd_elf64_bigmips_vec;
 736 extern const bfd_target bfd_elf64_bigaarch64_vec;
 737 extern const bfd_target bfd_elf64_hppa_linux_vec;
 738 extern const bfd_target bfd_elf64_hppa_vec;
 739 extern const bfd_target bfd_elf64_ia64_big_vec;
 740 extern const bfd_target bfd_elf64_ia64_hpux_big_vec;
 741 extern const bfd_target bfd_elf64_ia64_little_vec;
 742 extern const bfd_target bfd_elf64_ia64_vms_vec;
 743 extern const bfd_target bfd_elf64_little_generic_vec;
 744 extern const bfd_target bfd_elf64_littlemips_vec;
 745 extern const bfd_target bfd_elf64_littleaarch64_vec;
 746 extern const bfd_target bfd_elf64_mmix_vec;
 747 extern const bfd_target bfd_elf64_powerpc_vec;
 748 extern const bfd_target bfd_elf64_powerpcle_vec;
 749 extern const bfd_target bfd_elf64_powerpc_freebsd_vec;
 750 extern const bfd_target bfd_elf64_s390_vec;
 751 extern const bfd_target bfd_elf64_sh64_vec;
 752 extern const bfd_target bfd_elf64_sh64l_vec;
 753 extern const bfd_target bfd_elf64_sh64lin_vec;
 754 extern const bfd_target bfd_elf64_sh64blin_vec;
 755 extern const bfd_target bfd_elf64_sh64lnbsd_vec;
 756 extern const bfd_target bfd_elf64_sh64nbsd_vec;
 757 extern const bfd_target bfd_elf64_sparc_vec;
 758 extern const bfd_target bfd_elf64_sparc_freebsd_vec;
 759 extern const bfd_target bfd_elf64_sparc_sol2_vec;
 760 extern const bfd_target bfd_elf64_tilegx_be_vec;
 761 extern const bfd_target bfd_elf64_tilegx_le_vec;
 762 extern const bfd_target bfd_elf64_tradbigmips_vec;
 763 extern const bfd_target bfd_elf64_tradlittlemips_vec;
 764 extern const bfd_target bfd_elf64_tradbigmips_freebsd_vec;
 765 extern const bfd_target bfd_elf64_tradlittlemips_freebsd_vec;
 766 extern const bfd_target bfd_elf64_x86_64_freebsd_vec;
 767 extern const bfd_target bfd_elf64_x86_64_nacl_vec;
 768 extern const bfd_target bfd_elf64_x86_64_sol2_vec;
 769 extern const bfd_target bfd_elf64_x86_64_vec;
 770 extern const bfd_target bfd_elf32_x86_64_nacl_vec;
 771 extern const bfd_target bfd_elf32_x86_64_vec;
 772 extern const bfd_target bfd_elf64_l1om_freebsd_vec;
 773 extern const bfd_target bfd_elf64_l1om_vec;
 774 extern const bfd_target bfd_elf64_k1om_freebsd_vec;
 775 extern const bfd_target bfd_elf64_k1om_vec;
 776 extern const bfd_target bfd_mmo_vec;
 777 extern const bfd_target bfd_powerpc_pe_vec;
 778 extern const bfd_target bfd_powerpc_pei_vec;
 779 extern const bfd_target bfd_powerpcle_pe_vec;
 780 extern const bfd_target bfd_powerpcle_pei_vec;
 781 extern const bfd_target cris_aout_vec;
 782 extern const bfd_target demo_64_vec;
 783 extern const bfd_target ecoff_big_vec;
 784 extern const bfd_target ecoff_biglittle_vec;
 785 extern const bfd_target ecoff_little_vec;
 786 extern const bfd_target ecoffalpha_little_vec;
 787 extern const bfd_target go32coff_vec;
 788 extern const bfd_target go32stubbedcoff_vec;
 789 extern const bfd_target h8300coff_vec;
 790 extern const bfd_target h8500coff_vec;
 791 extern const bfd_target host_aout_vec;
 792 extern const bfd_target hp300bsd_vec;
 793 extern const bfd_target hp300hpux_vec;
 794 extern const bfd_target i386aout_vec;
 795 extern const bfd_target i386bsd_vec;
 796 extern const bfd_target i386coff_vec;
 797 extern const bfd_target i386dynix_vec;
 798 extern const bfd_target i386freebsd_vec;
 799 extern const bfd_target i386linux_vec;
 800 extern const bfd_target i386lynx_aout_vec;
 801 extern const bfd_target i386lynx_coff_vec;
 802 extern const bfd_target i386mach3_vec;
 803 extern const bfd_target i386msdos_vec;
 804 extern const bfd_target i386netbsd_vec;
 805 extern const bfd_target i386os9k_vec;
 806 extern const bfd_target i386pe_vec;
 807 extern const bfd_target i386pei_vec;
 808 extern const bfd_target i860coff_vec;
 809 extern const bfd_target icoff_big_vec;
 810 extern const bfd_target icoff_little_vec;
 811 extern const bfd_target ieee_vec;
 812 extern const bfd_target m68k4knetbsd_vec;
 813 extern const bfd_target m68kaux_coff_vec;
 814 extern const bfd_target m68kcoff_vec;
 815 extern const bfd_target m68kcoffun_vec;
 816 extern const bfd_target m68klinux_vec;
 817 extern const bfd_target m68knetbsd_vec;
 818 extern const bfd_target m68ksysvcoff_vec;
 819 extern const bfd_target m88kbcs_vec;
 820 extern const bfd_target m88kmach3_vec;
 821 extern const bfd_target m88kopenbsd_vec;
 822 extern const bfd_target mach_o_be_vec;
 823 extern const bfd_target mach_o_le_vec;
 824 extern const bfd_target mach_o_fat_vec;
 825 extern const bfd_target mach_o_i386_vec;
 826 extern const bfd_target mach_o_x86_64_vec;
 827 extern const bfd_target mcore_pe_big_vec;
 828 extern const bfd_target mcore_pe_little_vec;
 829 extern const bfd_target mcore_pei_big_vec;
 830 extern const bfd_target mcore_pei_little_vec;
 831 extern const bfd_target mipslpe_vec;
 832 extern const bfd_target mipslpei_vec;
 833 extern const bfd_target newsos3_vec;
 834 extern const bfd_target nlm32_alpha_vec;
 835 extern const bfd_target nlm32_i386_vec;
 836 extern const bfd_target nlm32_powerpc_vec;
 837 extern const bfd_target nlm32_sparc_vec;
 838 extern const bfd_target oasys_vec;
 839 extern const bfd_target or32coff_big_vec;
 840 extern const bfd_target pc532machaout_vec;
 841 extern const bfd_target pc532netbsd_vec;
 842 extern const bfd_target pdp11_aout_vec;
 843 extern const bfd_target pef_vec;
 844 extern const bfd_target pef_xlib_vec;
 845 extern const bfd_target plugin_vec;
 846 extern const bfd_target pmac_xcoff_vec;
 847 extern const bfd_target ppcboot_vec;
 848 extern const bfd_target riscix_vec;
 849 extern const bfd_target rs6000coff64_vec;
 850 extern const bfd_target rs6000coff_vec;
 851 extern const bfd_target shcoff_small_vec;
 852 extern const bfd_target shcoff_vec;
 853 extern const bfd_target shlcoff_small_vec;
 854 extern const bfd_target shlcoff_vec;
 855 extern const bfd_target shlpe_vec;
 856 extern const bfd_target shlpei_vec;
 857 extern const bfd_target som_vec;
 858 extern const bfd_target sparccoff_vec;
 859 extern const bfd_target sparcle_aout_vec;
 860 extern const bfd_target sparclinux_vec;
 861 extern const bfd_target sparclynx_aout_vec;
 862 extern const bfd_target sparclynx_coff_vec;
 863 extern const bfd_target sparcnetbsd_vec;
 864 extern const bfd_target sunos_big_vec;
 865 extern const bfd_target sym_vec;
 866 extern const bfd_target tic30_aout_vec;
 867 extern const bfd_target tic30_coff_vec;
 868 extern const bfd_target tic4x_coff0_beh_vec;
 869 extern const bfd_target tic4x_coff0_vec;
 870 extern const bfd_target tic4x_coff1_beh_vec;
 871 extern const bfd_target tic4x_coff1_vec;
 872 extern const bfd_target tic4x_coff2_beh_vec;
 873 extern const bfd_target tic4x_coff2_vec;
 874 extern const bfd_target tic54x_coff0_beh_vec;
 875 extern const bfd_target tic54x_coff0_vec;
 876 extern const bfd_target tic54x_coff1_beh_vec;
 877 extern const bfd_target tic54x_coff1_vec;
 878 extern const bfd_target tic54x_coff2_beh_vec;
 879 extern const bfd_target tic54x_coff2_vec;
 880 extern const bfd_target tic80coff_vec;
 881 extern const bfd_target vaxbsd_vec;
 882 extern const bfd_target vaxnetbsd_vec;
 883 extern const bfd_target vax1knetbsd_vec;
 884 extern const bfd_target versados_vec;
 885 extern const bfd_target vms_alpha_vec;
 886 extern const bfd_target vms_lib_txt_vec;
 887 extern const bfd_target w65_vec;
 888 extern const bfd_target we32kcoff_vec;
 889 extern const bfd_target x86_64pe_vec;
 890 extern const bfd_target x86_64pei_vec;
 891 extern const bfd_target x86_64coff_vec;
 892 extern const bfd_target z80coff_vec;
 893 extern const bfd_target z8kcoff_vec;
 894
 895 /* These are always included.  */
 896 extern const bfd_target srec_vec;
 897 extern const bfd_target verilog_vec;
 898 extern const bfd_target symbolsrec_vec;
 899 extern const bfd_target tekhex_vec;
 900 extern const bfd_target binary_vec;
 901 extern const bfd_target ihex_vec;
 902
 903 /* All of the xvecs for core files.  */
 904 extern const bfd_target aix386_core_vec;
 905 extern const bfd_target cisco_core_big_vec;
 906 extern const bfd_target cisco_core_little_vec;
 907 extern const bfd_target hppabsd_core_vec;
 908 extern const bfd_target hpux_core_vec;
 909 extern const bfd_target irix_core_vec;
 910 extern const bfd_target netbsd_core_vec;
 911 extern const bfd_target osf_core_vec;
 912 extern const bfd_target ptrace_core_vec;
 913 extern const bfd_target sco5_core_vec;
 914 extern const bfd_target trad_core_vec;
 915
 916 extern const bfd_target bfd_elf32_am33lin_vec;
 917 static const bfd_target * const _bfd_target_vector[] =
 918 {
 919 #ifdef SELECT_VECS
 920
 921         SELECT_VECS,
 922
 923 #else /* not SELECT_VECS */
 924
 925 #ifdef DEFAULT_VECTOR
 926         &DEFAULT_VECTOR,
 927 #endif
 928         /* This list is alphabetized to make it easy to compare
 929            with other vector lists -- the decls above and
 930            the case statement in configure.in.
 931            Vectors that don't compile on all systems, or aren't finished,
 932            should have an entry here with #if 0 around it, to show that
 933            it wasn't omitted by mistake.  */
 934         &a_out_adobe_vec,
 935 #ifdef BFD64
 936         &aix5coff64_vec,
 937 #endif
 938         &aout0_big_vec,
 939 #if 0
 940         /* We have no way of distinguishing these from other a.out variants.  */
 941         &aout_arm_big_vec,
 942         &aout_arm_little_vec,
 943         /* No one seems to use this.  */
 944         &aout_mips_big_vec,
 945 #endif
 946         &aout_mips_little_vec,
 947 #if 0
 948         &apollocoff_vec,
 949 #endif
 950         &arm_epoc_pe_big_vec,
 951         &arm_epoc_pe_little_vec,
 952         &arm_epoc_pei_big_vec,
 953         &arm_epoc_pei_little_vec,
 954         &arm_wince_pe_big_vec,
 955         &arm_wince_pe_little_vec,
 956         &arm_wince_pei_big_vec,
 957         &arm_wince_pei_little_vec,
 958         &armcoff_big_vec,
 959         &armcoff_little_vec,
 960         &armnetbsd_vec,
 961         &armpe_big_vec,
 962         &armpe_little_vec,
 963         &armpei_big_vec,
 964         &armpei_little_vec,
 965         &b_out_vec_big_host,
 966         &b_out_vec_little_host,
 967 #ifdef BFD64
 968         &bfd_pei_ia64_vec,
 969 #endif
 970         &bfd_elf32_avr_vec,
 971         &bfd_elf32_bfin_vec,
 972         &bfd_elf32_bfinfdpic_vec,
 973
 974         /* This, and other vectors, may not be used in any *.mt configuration.
 975            But that does not mean they are unnecessary.  If configured with
 976            --enable-targets=all, objdump or gdb should be able to examine
 977            the file even if we don't recognize the machine type.  */
 978         &bfd_elf32_big_generic_vec,
 979         &bfd_elf32_bigarc_vec,
 980         &bfd_elf32_bigarm_vec,
 981         &bfd_elf32_bigarm_symbian_vec,
 982         &bfd_elf32_bigarm_vxworks_vec,
 983         &bfd_elf32_bigmips_vec,
 984         &bfd_elf32_bigmips_vxworks_vec,
 985         &bfd_elf32_bigmoxie_vec,
 986         &bfd_elf32_cr16_vec,
 987         &bfd_elf32_cr16c_vec,
 988         &bfd_elf32_cris_vec,
 989         &bfd_elf32_crx_vec,
 990         &bfd_elf32_d10v_vec,
 991         &bfd_elf32_d30v_vec,
 992         &bfd_elf32_dlx_big_vec,
 993         &bfd_elf32_epiphany_vec,
 994         &bfd_elf32_fr30_vec,
 995         &bfd_elf32_frv_vec,
 996         &bfd_elf32_frvfdpic_vec,
 997         &bfd_elf32_h8300_vec,
 998         &bfd_elf32_hppa_linux_vec,
 999         &bfd_elf32_hppa_nbsd_vec,
1000         &bfd_elf32_hppa_vec,
1001         &bfd_elf32_i370_vec,
1002         &bfd_elf32_i386_freebsd_vec,
1003         &bfd_elf32_i386_nacl_vec,
1004         &bfd_elf32_i386_sol2_vec,
1005         &bfd_elf32_i386_vxworks_vec,
1006         &bfd_elf32_i386_vec,
1007         &bfd_elf32_i860_little_vec,
1008         &bfd_elf32_i860_vec,
1009         &bfd_elf32_i960_vec,
1010 #if 0
1011         &bfd_elf32_ia64_big_vec,
1012 #endif
1013 #ifdef BFD64
1014         &bfd_elf32_ia64_hpux_big_vec,
1015 #endif
1016         &bfd_elf32_ip2k_vec,
1017         &bfd_elf32_iq2000_vec,
1018         &bfd_elf32_lm32_vec,
1019         &bfd_elf32_little_generic_vec,
1020         &bfd_elf32_littlearc_vec,
1021         &bfd_elf32_littlearm_vec,
1022         &bfd_elf32_littlearm_symbian_vec,
1023         &bfd_elf32_littlearm_vxworks_vec,
1024         &bfd_elf32_littlemips_vec,
1025         &bfd_elf32_littlemips_vxworks_vec,
1026         &bfd_elf32_littlemoxie_vec,
1027         &bfd_elf32_m32c_vec,
1028         &bfd_elf32_m32r_vec,
1029         &bfd_elf32_m32rle_vec,
1030         &bfd_elf32_m32rlin_vec,
1031         &bfd_elf32_m32rlelin_vec,
1032         &bfd_elf32_m68hc11_vec,
1033         &bfd_elf32_m68hc12_vec,
1034         &bfd_elf32_m68k_vec,
1035         &bfd_elf32_m88k_vec,
1036         &bfd_elf32_mcore_big_vec,
1037         &bfd_elf32_mcore_little_vec,
1038         &bfd_elf32_mep_vec,
1039         &bfd_elf32_microblaze_vec,
1040         &bfd_elf32_mn10200_vec,
1041         &bfd_elf32_mn10300_vec,
1042         &bfd_elf32_mt_vec,
1043         &bfd_elf32_msp430_vec,
1044 #ifdef BFD64
1045         &bfd_elf32_nbigmips_vec,
1046         &bfd_elf32_nlittlemips_vec,
1047         &bfd_elf32_ntradbigmips_vec,
1048         &bfd_elf32_ntradlittlemips_vec,
1049         &bfd_elf32_ntradbigmips_freebsd_vec,
1050         &bfd_elf32_ntradlittlemips_freebsd_vec,
1051 #endif
1052         &bfd_elf32_openrisc_vec,
1053         &bfd_elf32_or32_big_vec,
1054         &bfd_elf32_pj_vec,
1055         &bfd_elf32_pjl_vec,
1056         &bfd_elf32_powerpc_vec,
1057         &bfd_elf32_powerpc_vxworks_vec,
1058         &bfd_elf32_powerpcle_vec,
1059         &bfd_elf32_powerpc_freebsd_vec,
1060         &bfd_elf32_rl78_vec,
1061         &bfd_elf32_rx_be_vec,
1062         &bfd_elf32_rx_be_ns_vec,
1063         &bfd_elf32_rx_le_vec,
1064         &bfd_elf32_s390_vec,
1065 #ifdef BFD64
1066         &bfd_elf32_bigscore_vec,
1067         &bfd_elf32_littlescore_vec,
1068 #endif
1069         &bfd_elf32_sh_vec,
1070         &bfd_elf32_shbfd_vec,
1071         &bfd_elf32_shblin_vec,
1072         &bfd_elf32_shfd_vec,
1073         &bfd_elf32_shl_vec,
1074         &bfd_elf32_shl_symbian_vec,
1075         &bfd_elf32_shlin_vec,
1076         &bfd_elf32_shlnbsd_vec,
1077         &bfd_elf32_shlvxworks_vec,
1078         &bfd_elf32_shnbsd_vec,
1079         &bfd_elf32_shvxworks_vec,
1080 #ifdef BFD64
1081         &bfd_elf32_sh64_vec,
1082         &bfd_elf32_sh64l_vec,
1083         &bfd_elf32_sh64lnbsd_vec,
1084         &bfd_elf32_sh64nbsd_vec,
1085         &bfd_elf32_sh64lin_vec,
1086         &bfd_elf32_sh64blin_vec,
1087 #endif
1088         &bfd_elf32_sparc_vec,
1089         &bfd_elf32_sparc_sol2_vec,
1090         &bfd_elf32_sparc_vxworks_vec,
1091         &bfd_elf32_spu_vec,
1092         &bfd_elf32_tic6x_be_vec,
1093         &bfd_elf32_tic6x_le_vec,
1094         &bfd_elf32_tilegx_be_vec,
1095         &bfd_elf32_tilegx_le_vec,
1096         &bfd_elf32_tilepro_vec,
1097         &bfd_elf32_tradbigmips_vec,
1098         &bfd_elf32_tradlittlemips_vec,
1099         &bfd_elf32_tradbigmips_freebsd_vec,
1100         &bfd_elf32_tradlittlemips_freebsd_vec,
1101         &bfd_elf32_us_cris_vec,
1102         &bfd_elf32_v850_vec,
1103         &bfd_elf32_v850_rh850_vec,
1104         &bfd_elf32_vax_vec,
1105         &bfd_elf32_xc16x_vec,
1106         &bfd_elf32_xgate_vec,
1107         &bfd_elf32_xstormy16_vec,
1108         &bfd_elf32_xtensa_be_vec,
1109         &bfd_elf32_xtensa_le_vec,
1110 #ifdef BFD64
1111         &bfd_elf64_alpha_freebsd_vec,
1112         &bfd_elf64_alpha_vec,
1113         &bfd_elf64_big_generic_vec,
1114         &bfd_elf64_bigmips_vec,
1115         &bfd_elf64_bigaarch64_vec,
1116         &bfd_elf64_hppa_linux_vec,
1117         &bfd_elf64_hppa_vec,
1118         &bfd_elf64_ia64_big_vec,
1119         &bfd_elf64_ia64_hpux_big_vec,
1120         &bfd_elf64_ia64_little_vec,
1121         &bfd_elf64_ia64_vms_vec,
1122         &bfd_elf64_little_generic_vec,
1123         &bfd_elf64_littlemips_vec,
1124         &bfd_elf64_littleaarch64_vec,
1125         &bfd_elf64_mmix_vec,
1126         &bfd_elf64_powerpc_vec,
1127         &bfd_elf64_powerpcle_vec,
1128         &bfd_elf64_powerpc_freebsd_vec,
1129         &bfd_elf64_s390_vec,
1130         &bfd_elf64_sh64_vec,
1131         &bfd_elf64_sh64l_vec,
1132         &bfd_elf64_sh64lnbsd_vec,
1133         &bfd_elf64_sh64nbsd_vec,
1134         &bfd_elf64_sh64lin_vec,
1135         &bfd_elf64_sh64blin_vec,
1136         &bfd_elf64_sparc_vec,
1137         &bfd_elf64_sparc_freebsd_vec,
1138         &bfd_elf64_sparc_sol2_vec,
1139         &bfd_elf64_tilegx_be_vec,
1140         &bfd_elf64_tilegx_le_vec,
1141         &bfd_elf64_tradbigmips_vec,
1142         &bfd_elf64_tradlittlemips_vec,
1143         &bfd_elf64_tradbigmips_freebsd_vec,
1144         &bfd_elf64_tradlittlemips_freebsd_vec,
1145         &bfd_elf64_x86_64_freebsd_vec,
1146         &bfd_elf64_x86_64_nacl_vec,
1147         &bfd_elf64_x86_64_sol2_vec,
1148         &bfd_elf64_x86_64_vec,
1149         &bfd_elf32_x86_64_nacl_vec,
1150         &bfd_elf32_x86_64_vec,
1151         &bfd_elf64_l1om_freebsd_vec,
1152         &bfd_elf64_l1om_vec,
1153         &bfd_elf64_k1om_freebsd_vec,
1154         &bfd_elf64_k1om_vec,
1155         &bfd_mmo_vec,
1156 #endif
1157         &bfd_powerpc_pe_vec,
1158         &bfd_powerpc_pei_vec,
1159         &bfd_powerpcle_pe_vec,
1160         &bfd_powerpcle_pei_vec,
1161         &cris_aout_vec,
1162 #ifdef BFD64
1163         &demo_64_vec,   /* Only compiled if host has long-long support.  */
1164 #endif
1165         &ecoff_big_vec,
1166         &ecoff_biglittle_vec,
1167         &ecoff_little_vec,
1168 #ifdef BFD64
1169         &ecoffalpha_little_vec,
1170 #endif
1171         &go32coff_vec,
1172         &go32stubbedcoff_vec,
1173         &h8300coff_vec,
1174         &h8500coff_vec,
1175 #if 0
1176         /* Since a.out files lack decent magic numbers, no way to recognize
1177            which kind of a.out file it is.  */
1178         &host_aout_vec,
1179         /* Clashes with sunos_big_vec magic no.  */
1180         &hp300bsd_vec,
1181 #endif
1182         &hp300hpux_vec,
1183         &i386aout_vec,
1184         &i386bsd_vec,
1185         &i386coff_vec,
1186 #if 0
1187         &i386dynix_vec,
1188 #endif
1189         &i386freebsd_vec,
1190 #if 0
1191         /* Since a.out files lack decent magic numbers, no way to recognize
1192            which kind of a.out file it is.  */
1193         &i386linux_vec,
1194 #endif
1195         &i386lynx_aout_vec,
1196         &i386lynx_coff_vec,
1197 #if 0
1198         /* No distinguishing features for Mach 3 executables.  */
1199         &i386mach3_vec,
1200 #endif
1201         &i386msdos_vec,
1202         &i386netbsd_vec,
1203         &i386os9k_vec,
1204         &i386pe_vec,
1205         &i386pei_vec,
1206 #ifdef BFD64
1207         &x86_64coff_vec,
1208         &x86_64pe_vec,
1209         &x86_64pei_vec,
1210 #endif
1211         &i860coff_vec,
1212         &icoff_big_vec,
1213         &icoff_little_vec,
1214         &ieee_vec,
1215 #if 0
1216         &m68k4knetbsd_vec,
1217         &m68kaux_coff_vec,
1218 #endif
1219         &m68kcoff_vec,
1220         &m68kcoffun_vec,
1221 #if 0
1222         /* Since a.out files lack decent magic numbers, no way to recognize
1223            which kind of a.out file it is.  */
1224         &m68klinux_vec,
1225 #endif
1226         &m68knetbsd_vec,
1227         &m68ksysvcoff_vec,
1228         &m88kbcs_vec,
1229         &m88kmach3_vec,
1230         &m88kopenbsd_vec,
1231         &mach_o_be_vec,
1232         &mach_o_le_vec,
1233         &mach_o_fat_vec,
1234         &mach_o_i386_vec,
1235 #ifdef BFD64
1236         &mach_o_x86_64_vec,
1237 #endif
1238         &mcore_pe_big_vec,
1239         &mcore_pe_little_vec,
1240         &mcore_pei_big_vec,
1241         &mcore_pei_little_vec,
1242         &mipslpe_vec,
1243         &mipslpei_vec,
1244         &newsos3_vec,
1245 #ifdef BFD64
1246         &nlm32_alpha_vec,
1247 #endif
1248         &nlm32_i386_vec,
1249         &nlm32_powerpc_vec,
1250         &nlm32_sparc_vec,
1251 #if 0
1252         /* We have no oasys tools anymore, so we can't test any of this
1253            anymore. If you want to test the stuff yourself, go ahead...
1254            steve@cygnus.com
1255            Worse, since there is no magic number for archives, there
1256            can be annoying target mis-matches.  */
1257         &oasys_vec,
1258 #endif
1259         /* Entry for the OpenRISC family.  */
1260         &or32coff_big_vec,
1261
1262         &pc532machaout_vec,
1263         &pc532netbsd_vec,
1264         &pdp11_aout_vec,
1265         &pef_vec,
1266         &pef_xlib_vec,
1267 #if BFD_SUPPORTS_PLUGINS
1268         &plugin_vec,
1269 #endif
1270 #if 0
1271         /* This has the same magic number as RS/6000.  */
1272         &pmac_xcoff_vec,
1273 #endif
1274         &ppcboot_vec,
1275 #if 0
1276         /* We have no way of distinguishing these from other a.out variants.  */
1277         &riscix_vec,
1278 #endif
1279 #ifdef BFD64
1280         &rs6000coff64_vec,
1281 #endif
1282         &rs6000coff_vec,
1283         &shcoff_small_vec,
1284         &shcoff_vec,
1285         &shlcoff_small_vec,
1286         &shlcoff_vec,
1287         &shlpe_vec,
1288         &shlpei_vec,
1289         &som_vec,
1290         &sparccoff_vec,
1291         &sparcle_aout_vec,
1292         &sparclinux_vec,
1293         &sparclynx_aout_vec,
1294         &sparclynx_coff_vec,
1295         &sparcnetbsd_vec,
1296         &sunos_big_vec,
1297         &sym_vec,
1298         &tic30_aout_vec,
1299         &tic30_coff_vec,
1300         &tic54x_coff0_beh_vec,
1301         &tic54x_coff0_vec,
1302         &tic54x_coff1_beh_vec,
1303         &tic54x_coff1_vec,
1304         &tic54x_coff2_beh_vec,
1305         &tic54x_coff2_vec,
1306         &tic80coff_vec,
1307         &vaxbsd_vec,
1308         &vaxnetbsd_vec,
1309         &vax1knetbsd_vec,
1310         &versados_vec,
1311 #ifdef BFD64
1312         &vms_alpha_vec,
1313 #endif
1314         &vms_lib_txt_vec,
1315         &w65_vec,
1316         &we32kcoff_vec,
1317         &z80coff_vec,
1318         &z8kcoff_vec,
1319         &bfd_elf32_am33lin_vec,
1320 #endif /* not SELECT_VECS */
1321
1322 /* Always support S-records, for convenience.  */
1323         &srec_vec,
1324         &symbolsrec_vec,
1325 /* And verilog.  */
1326         &verilog_vec,
1327 /* And tekhex */
1328         &tekhex_vec,
1329 /* Likewise for binary output.  */
1330         &binary_vec,
1331 /* Likewise for ihex.  */
1332         &ihex_vec,
1333
1334 /* Add any required traditional-core-file-handler.  */
1335
1336 #ifdef AIX386_CORE
1337         &aix386_core_vec,
1338 #endif
1339 #if 0
1340         /* We don't include cisco_core_*_vec.  Although it has a magic number,
1341            the magic number isn't at the beginning of the file, and thus
1342            might spuriously match other kinds of files.  */
1343         &cisco_core_big_vec,
1344         &cisco_core_little_vec,
1345 #endif
1346 #ifdef HPPABSD_CORE
1347         &hppabsd_core_vec,
1348 #endif
1349 #ifdef HPUX_CORE
1350         &hpux_core_vec,
1351 #endif
1352 #ifdef IRIX_CORE
1353         &irix_core_vec,
1354 #endif
1355 #ifdef NETBSD_CORE
1356         &netbsd_core_vec,
1357 #endif
1358 #ifdef OSF_CORE
1359         &osf_core_vec,
1360 #endif
1361 #ifdef PTRACE_CORE
1362         &ptrace_core_vec,
1363 #endif
1364 #ifdef SCO5_CORE
1365         &sco5_core_vec,
1366 #endif
1367 #ifdef TRAD_CORE
1368         &trad_core_vec,
1369 #endif
1370
1371         NULL /* end of list marker */
1372 };
1373 const bfd_target * const *bfd_target_vector = _bfd_target_vector;
1374
1375 /* bfd_default_vector[0] contains either the address of the default vector,
1376    if there is one, or zero if there isn't.  */
1377
1378 const bfd_target *bfd_default_vector[] = {
1379 #ifdef DEFAULT_VECTOR
1380         &DEFAULT_VECTOR,
1381 #endif
1382         NULL
1383 };
1384
1385 /* bfd_associated_vector[] contains the associated target vectors used
1386    to reduce the ambiguity in bfd_check_format_matches.  */
1387
1388 static const bfd_target *_bfd_associated_vector[] = {
1389 #ifdef ASSOCIATED_VECS
1390         ASSOCIATED_VECS,
1391 #endif
1392         NULL
1393 };
1394 const bfd_target * const *bfd_associated_vector = _bfd_associated_vector;
1395
1396 /* When there is an ambiguous match, bfd_check_format_matches puts the
1397    names of the matching targets in an array.  This variable is the maximum
1398    number of entries that the array could possibly need.  */
1399 const size_t _bfd_target_vector_entries = sizeof (_bfd_target_vector)/sizeof (*_bfd_target_vector);
1400 \f
1401 /* This array maps configuration triplets onto BFD vectors.  */
1402
1403 struct targmatch
1404 {
1405   /* The configuration triplet.  */
1406   const char *triplet;
1407   /* The BFD vector.  If this is NULL, then the vector is found by
1408      searching forward for the next structure with a non NULL vector
1409      field.  */
1410   const bfd_target *vector;
1411 };
1412
1413 /* targmatch.h is built by Makefile out of config.bfd.  */
1414 static const struct targmatch bfd_target_match[] = {
1415 #include "targmatch.h"
1416   { NULL, NULL }
1417 };
1418
1419 /* Find a target vector, given a name or configuration triplet.  */
1420
1421 static const bfd_target *
1422 find_target (const char *name)
1423 {
1424   const bfd_target * const *target;
1425   const struct targmatch *match;
1426
1427   for (target = &bfd_target_vector[0]; *target != NULL; target++)
1428     if (strcmp (name, (*target)->name) == 0)
1429       return *target;
1430
1431   /* If we couldn't match on the exact name, try matching on the
1432      configuration triplet.  FIXME: We should run the triplet through
1433      config.sub first, but that is hard.  */
1434   for (match = &bfd_target_match[0]; match->triplet != NULL; match++)
1435     {
1436       if (fnmatch (match->triplet, name, 0) == 0)
1437         {
1438           while (match->vector == NULL)
1439             ++match;
1440           return match->vector;
1441         }
1442     }
1443
1444   bfd_set_error (bfd_error_invalid_target);
1445   return NULL;
1446 }
1447
1448 /*
1449 FUNCTION
1450         bfd_set_default_target
1451
1452 SYNOPSIS
1453         bfd_boolean bfd_set_default_target (const char *name);
1454
1455 DESCRIPTION
1456         Set the default target vector to use when recognizing a BFD.
1457         This takes the name of the target, which may be a BFD target
1458         name or a configuration triplet.
1459 */
1460
1461 bfd_boolean
1462 bfd_set_default_target (const char *name)
1463 {
1464   const bfd_target *target;
1465
1466   if (bfd_default_vector[0] != NULL
1467       && strcmp (name, bfd_default_vector[0]->name) == 0)
1468     return TRUE;
1469
1470   target = find_target (name);
1471   if (target == NULL)
1472     return FALSE;
1473
1474   bfd_default_vector[0] = target;
1475   return TRUE;
1476 }
1477
1478 /*
1479 FUNCTION
1480         bfd_find_target
1481
1482 SYNOPSIS
1483         const bfd_target *bfd_find_target (const char *target_name, bfd *abfd);
1484
1485 DESCRIPTION
1486         Return a pointer to the transfer vector for the object target
1487         named @var{target_name}.  If @var{target_name} is <<NULL>>,
1488         choose the one in the environment variable <<GNUTARGET>>; if
1489         that is null or not defined, then choose the first entry in the
1490         target list.  Passing in the string "default" or setting the
1491         environment variable to "default" will cause the first entry in
1492         the target list to be returned, and "target_defaulted" will be
1493         set in the BFD if @var{abfd} isn't <<NULL>>.  This causes
1494         <<bfd_check_format>> to loop over all the targets to find the
1495         one that matches the file being read.
1496 */
1497
1498 const bfd_target *
1499 bfd_find_target (const char *target_name, bfd *abfd)
1500 {
1501   const char *targname;
1502   const bfd_target *target;
1503
1504   if (target_name != NULL)
1505     targname = target_name;
1506   else
1507     targname = getenv ("GNUTARGET");
1508
1509   /* This is safe; the vector cannot be null.  */
1510   if (targname == NULL || strcmp (targname, "default") == 0)
1511     {
1512       if (bfd_default_vector[0] != NULL)
1513         target = bfd_default_vector[0];
1514       else
1515         target = bfd_target_vector[0];
1516       if (abfd)
1517         {
1518           abfd->xvec = target;
1519           abfd->target_defaulted = TRUE;
1520         }
1521       return target;
1522     }
1523
1524   if (abfd)
1525     abfd->target_defaulted = FALSE;
1526
1527   target = find_target (targname);
1528   if (target == NULL)
1529     return NULL;
1530
1531   if (abfd)
1532     abfd->xvec = target;
1533   return target;
1534 }
1535
1536 /* Helper function for bfd_get_target_info to determine the target's
1537    architecture.  This method handles bfd internal target names as
1538    tuples and triplets.  */
1539 static bfd_boolean
1540 _bfd_find_arch_match (const char *tname, const char **arch,
1541                       const char **def_target_arch)
1542 {
1543   if (!arch)
1544     return FALSE;
1545
1546   while (*arch != NULL)
1547     {
1548       const char *in_a = strstr (*arch, tname);
1549       char end_ch = (in_a ? in_a[strlen (tname)] : 0);
1550
1551       if (in_a && (in_a == *arch || in_a[-1] == ':')
1552           && end_ch == 0)
1553         {
1554           *def_target_arch = *arch;
1555           return TRUE;
1556         }
1557       arch++;
1558     }
1559   return FALSE;
1560 }
1561
1562 /*
1563 FUNCTION
1564         bfd_get_target_info
1565 SYNOPSIS
1566         const bfd_target *bfd_get_target_info (const char *target_name,
1567                                                bfd *abfd,
1568                                                bfd_boolean *is_bigendian,
1569                                                int *underscoring,
1570                                                const char **def_target_arch);
1571 DESCRIPTION
1572         Return a pointer to the transfer vector for the object target
1573         named @var{target_name}.  If @var{target_name} is <<NULL>>,
1574         choose the one in the environment variable <<GNUTARGET>>; if
1575         that is null or not defined, then choose the first entry in the
1576         target list.  Passing in the string "default" or setting the
1577         environment variable to "default" will cause the first entry in
1578         the target list to be returned, and "target_defaulted" will be
1579         set in the BFD if @var{abfd} isn't <<NULL>>.  This causes
1580         <<bfd_check_format>> to loop over all the targets to find the
1581         one that matches the file being read.
1582         If @var{is_bigendian} is not <<NULL>>, then set this value to target's
1583         endian mode. True for big-endian, FALSE for little-endian or for
1584         invalid target.
1585         If @var{underscoring} is not <<NULL>>, then set this value to target's
1586         underscoring mode. Zero for none-underscoring, -1 for invalid target,
1587         else the value of target vector's symbol underscoring.
1588         If @var{def_target_arch} is not <<NULL>>, then set it to the architecture
1589         string specified by the target_name.
1590 */
1591 const bfd_target *
1592 bfd_get_target_info (const char *target_name, bfd *abfd,
1593                      bfd_boolean *is_bigendian,
1594                      int *underscoring, const char **def_target_arch)
1595 {
1596   const bfd_target *target_vec;
1597
1598   if (is_bigendian)
1599     *is_bigendian = FALSE;
1600   if (underscoring)
1601     *underscoring = -1;
1602   if (def_target_arch)
1603     *def_target_arch = NULL;
1604   target_vec = bfd_find_target (target_name, abfd);
1605   if (! target_vec)
1606     return NULL;
1607   if (is_bigendian)
1608     *is_bigendian = ((target_vec->byteorder == BFD_ENDIAN_BIG) ? TRUE
1609                                                                : FALSE);
1610   if (underscoring)
1611     *underscoring = ((int) target_vec->symbol_leading_char) & 0xff;
1612
1613   if (def_target_arch)
1614     {
1615       const char *tname = target_vec->name;
1616       const char **arches = bfd_arch_list ();
1617
1618       if (arches && tname)
1619         {
1620           char *hyp = strchr (tname, '-');
1621
1622           if (hyp != NULL)
1623             {
1624               tname = ++hyp;
1625
1626               /* Make sure we detect architecture names
1627                  for triplets like "pe-arm-wince-little".  */
1628               if (!_bfd_find_arch_match (tname, arches, def_target_arch))
1629                 {
1630                   char new_tname[50];
1631
1632                   strcpy (new_tname, hyp);
1633                   while ((hyp = strrchr (new_tname, '-')) != NULL)
1634                     {
1635                       *hyp = 0;
1636                       if (_bfd_find_arch_match (new_tname, arches,
1637                                                 def_target_arch))
1638                         break;
1639                     }
1640                 }
1641             }
1642           else
1643             _bfd_find_arch_match (tname, arches, def_target_arch);
1644         }
1645
1646       if (arches)
1647         free (arches);
1648     }
1649   return target_vec;
1650 }
1651
1652 /*
1653 FUNCTION
1654         bfd_target_list
1655
1656 SYNOPSIS
1657         const char ** bfd_target_list (void);
1658
1659 DESCRIPTION
1660         Return a freshly malloced NULL-terminated
1661         vector of the names of all the valid BFD targets. Do not
1662         modify the names.
1663
1664 */
1665
1666 const char **
1667 bfd_target_list (void)
1668 {
1669   int vec_length = 0;
1670   bfd_size_type amt;
1671   const bfd_target * const *target;
1672   const  char **name_list, **name_ptr;
1673
1674   for (target = &bfd_target_vector[0]; *target != NULL; target++)
1675     vec_length++;
1676
1677   amt = (vec_length + 1) * sizeof (char **);
1678   name_ptr = name_list = (const  char **) bfd_malloc (amt);
1679
1680   if (name_list == NULL)
1681     return NULL;
1682
1683   for (target = &bfd_target_vector[0]; *target != NULL; target++)
1684     if (target == &bfd_target_vector[0]
1685         || *target != bfd_target_vector[0])
1686       *name_ptr++ = (*target)->name;
1687
1688   *name_ptr = NULL;
1689   return name_list;
1690 }
1691
1692 /*
1693 FUNCTION
1694         bfd_seach_for_target
1695
1696 SYNOPSIS
1697         const bfd_target *bfd_search_for_target
1698           (int (*search_func) (const bfd_target *, void *),
1699            void *);
1700
1701 DESCRIPTION
1702         Return a pointer to the first transfer vector in the list of
1703         transfer vectors maintained by BFD that produces a non-zero
1704         result when passed to the function @var{search_func}.  The
1705         parameter @var{data} is passed, unexamined, to the search
1706         function.
1707 */
1708
1709 const bfd_target *
1710 bfd_search_for_target (int (*search_func) (const bfd_target *, void *),
1711                        void *data)
1712 {
1713   const bfd_target * const *target;
1714
1715   for (target = bfd_target_vector; *target != NULL; target ++)
1716     if (search_func (*target, data))
1717       return *target;
1718
1719   return NULL;
1720 }