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targets.c revision 1.1.1.2.2.1
      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_cr16_vec;
    610 extern const bfd_target bfd_elf32_cr16c_vec;
    611 extern const bfd_target bfd_elf32_cris_vec;
    612 extern const bfd_target bfd_elf32_crx_vec;
    613 extern const bfd_target bfd_elf32_d10v_vec;
    614 extern const bfd_target bfd_elf32_d30v_vec;
    615 extern const bfd_target bfd_elf32_dlx_big_vec;
    616 extern const bfd_target bfd_elf32_epiphany_vec;
    617 extern const bfd_target bfd_elf32_fr30_vec;
    618 extern const bfd_target bfd_elf32_frv_vec;
    619 extern const bfd_target bfd_elf32_frvfdpic_vec;
    620 extern const bfd_target bfd_elf32_moxie_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_m32c_vec;
    649 extern const bfd_target bfd_elf32_m32r_vec;
    650 extern const bfd_target bfd_elf32_m32rle_vec;
    651 extern const bfd_target bfd_elf32_m32rlin_vec;
    652 extern const bfd_target bfd_elf32_m32rlelin_vec;
    653 extern const bfd_target bfd_elf32_m68hc11_vec;
    654 extern const bfd_target bfd_elf32_m68hc12_vec;
    655 extern const bfd_target bfd_elf32_m68k_vec;
    656 extern const bfd_target bfd_elf32_m88k_vec;
    657 extern const bfd_target bfd_elf32_mcore_big_vec;
    658 extern const bfd_target bfd_elf32_mcore_little_vec;
    659 extern const bfd_target bfd_elf32_mep_vec;
    660 extern const bfd_target bfd_elf32_mep_little_vec;
    661 extern const bfd_target bfd_elf32_microblaze_vec;
    662 extern const bfd_target bfd_elf32_mn10200_vec;
    663 extern const bfd_target bfd_elf32_mn10300_vec;
    664 extern const bfd_target bfd_elf32_mt_vec;
    665 extern const bfd_target bfd_elf32_msp430_vec;
    666 extern const bfd_target bfd_elf32_nbigmips_vec;
    667 extern const bfd_target bfd_elf32_nlittlemips_vec;
    668 extern const bfd_target bfd_elf32_ntradbigmips_vec;
    669 extern const bfd_target bfd_elf32_ntradlittlemips_vec;
    670 extern const bfd_target bfd_elf32_ntradbigmips_freebsd_vec;
    671 extern const bfd_target bfd_elf32_ntradlittlemips_freebsd_vec;
    672 extern const bfd_target bfd_elf32_openrisc_vec;
    673 extern const bfd_target bfd_elf32_or32_big_vec;
    674 extern const bfd_target bfd_elf32_pj_vec;
    675 extern const bfd_target bfd_elf32_pjl_vec;
    676 extern const bfd_target bfd_elf32_powerpc_vec;
    677 extern const bfd_target bfd_elf32_powerpcle_vec;
    678 extern const bfd_target bfd_elf32_powerpc_freebsd_vec;
    679 extern const bfd_target bfd_elf32_powerpc_vxworks_vec;
    680 extern const bfd_target bfd_elf32_rl78_vec;
    681 extern const bfd_target bfd_elf32_rx_le_vec;
    682 extern const bfd_target bfd_elf32_rx_be_vec;
    683 extern const bfd_target bfd_elf32_rx_be_ns_vec;
    684 extern const bfd_target bfd_elf32_s390_vec;
    685 extern const bfd_target bfd_elf32_bigscore_vec;
    686 extern const bfd_target bfd_elf32_littlescore_vec;
    687 extern const bfd_target bfd_elf32_sh64_vec;
    688 extern const bfd_target bfd_elf32_sh64l_vec;
    689 extern const bfd_target bfd_elf32_sh64lin_vec;
    690 extern const bfd_target bfd_elf32_sh64blin_vec;
    691 extern const bfd_target bfd_elf32_sh64lnbsd_vec;
    692 extern const bfd_target bfd_elf32_sh64nbsd_vec;
    693 extern const bfd_target bfd_elf32_sh_vec;
    694 extern const bfd_target bfd_elf32_shbfd_vec;
    695 extern const bfd_target bfd_elf32_shblin_vec;
    696 extern const bfd_target bfd_elf32_shfd_vec;
    697 extern const bfd_target bfd_elf32_shl_vec;
    698 extern const bfd_target bfd_elf32_shl_symbian_vec;
    699 extern const bfd_target bfd_elf32_shlin_vec;
    700 extern const bfd_target bfd_elf32_shlnbsd_vec;
    701 extern const bfd_target bfd_elf32_shlvxworks_vec;
    702 extern const bfd_target bfd_elf32_shnbsd_vec;
    703 extern const bfd_target bfd_elf32_shvxworks_vec;
    704 extern const bfd_target bfd_elf32_sparc_vec;
    705 extern const bfd_target bfd_elf32_sparc_sol2_vec;
    706 extern const bfd_target bfd_elf32_sparc_vxworks_vec;
    707 extern const bfd_target bfd_elf32_spu_vec;
    708 extern const bfd_target bfd_elf32_tic6x_be_vec;
    709 extern const bfd_target bfd_elf32_tic6x_le_vec;
    710 extern const bfd_target bfd_elf32_tic6x_elf_be_vec;
    711 extern const bfd_target bfd_elf32_tic6x_elf_le_vec;
    712 extern const bfd_target bfd_elf32_tic6x_linux_be_vec;
    713 extern const bfd_target bfd_elf32_tic6x_linux_le_vec;
    714 extern const bfd_target bfd_elf32_tilegx_be_vec;
    715 extern const bfd_target bfd_elf32_tilegx_le_vec;
    716 extern const bfd_target bfd_elf32_tilepro_vec;
    717 extern const bfd_target bfd_elf32_tradbigmips_vec;
    718 extern const bfd_target bfd_elf32_tradlittlemips_vec;
    719 extern const bfd_target bfd_elf32_tradbigmips_freebsd_vec;
    720 extern const bfd_target bfd_elf32_tradlittlemips_freebsd_vec;
    721 extern const bfd_target bfd_elf32_us_cris_vec;
    722 extern const bfd_target bfd_elf32_v850_vec;
    723 extern const bfd_target bfd_elf32_vax_vec;
    724 extern const bfd_target bfd_elf32_xc16x_vec;
    725 extern const bfd_target bfd_elf32_xgate_vec;
    726 extern const bfd_target bfd_elf32_xstormy16_vec;
    727 extern const bfd_target bfd_elf32_xtensa_be_vec;
    728 extern const bfd_target bfd_elf32_xtensa_le_vec;
    729 extern const bfd_target bfd_elf64_alpha_freebsd_vec;
    730 extern const bfd_target bfd_elf64_alpha_vec;
    731 extern const bfd_target bfd_elf64_big_generic_vec;
    732 extern const bfd_target bfd_elf64_bigmips_vec;
    733 extern const bfd_target bfd_elf64_bigaarch64_vec;
    734 extern const bfd_target bfd_elf64_hppa_linux_vec;
    735 extern const bfd_target bfd_elf64_hppa_vec;
    736 extern const bfd_target bfd_elf64_ia64_big_vec;
    737 extern const bfd_target bfd_elf64_ia64_hpux_big_vec;
    738 extern const bfd_target bfd_elf64_ia64_little_vec;
    739 extern const bfd_target bfd_elf64_ia64_vms_vec;
    740 extern const bfd_target bfd_elf64_little_generic_vec;
    741 extern const bfd_target bfd_elf64_littlemips_vec;
    742 extern const bfd_target bfd_elf64_littleaarch64_vec;
    743 extern const bfd_target bfd_elf64_mmix_vec;
    744 extern const bfd_target bfd_elf64_powerpc_vec;
    745 extern const bfd_target bfd_elf64_powerpcle_vec;
    746 extern const bfd_target bfd_elf64_powerpc_freebsd_vec;
    747 extern const bfd_target bfd_elf64_s390_vec;
    748 extern const bfd_target bfd_elf64_sh64_vec;
    749 extern const bfd_target bfd_elf64_sh64l_vec;
    750 extern const bfd_target bfd_elf64_sh64lin_vec;
    751 extern const bfd_target bfd_elf64_sh64blin_vec;
    752 extern const bfd_target bfd_elf64_sh64lnbsd_vec;
    753 extern const bfd_target bfd_elf64_sh64nbsd_vec;
    754 extern const bfd_target bfd_elf64_sparc_vec;
    755 extern const bfd_target bfd_elf64_sparc_freebsd_vec;
    756 extern const bfd_target bfd_elf64_sparc_sol2_vec;
    757 extern const bfd_target bfd_elf64_tilegx_be_vec;
    758 extern const bfd_target bfd_elf64_tilegx_le_vec;
    759 extern const bfd_target bfd_elf64_tradbigmips_vec;
    760 extern const bfd_target bfd_elf64_tradlittlemips_vec;
    761 extern const bfd_target bfd_elf64_tradbigmips_freebsd_vec;
    762 extern const bfd_target bfd_elf64_tradlittlemips_freebsd_vec;
    763 extern const bfd_target bfd_elf64_x86_64_freebsd_vec;
    764 extern const bfd_target bfd_elf64_x86_64_nacl_vec;
    765 extern const bfd_target bfd_elf64_x86_64_sol2_vec;
    766 extern const bfd_target bfd_elf64_x86_64_vec;
    767 extern const bfd_target bfd_elf32_x86_64_nacl_vec;
    768 extern const bfd_target bfd_elf32_x86_64_vec;
    769 extern const bfd_target bfd_elf64_l1om_freebsd_vec;
    770 extern const bfd_target bfd_elf64_l1om_vec;
    771 extern const bfd_target bfd_elf64_k1om_freebsd_vec;
    772 extern const bfd_target bfd_elf64_k1om_vec;
    773 extern const bfd_target bfd_mmo_vec;
    774 extern const bfd_target bfd_powerpc_pe_vec;
    775 extern const bfd_target bfd_powerpc_pei_vec;
    776 extern const bfd_target bfd_powerpcle_pe_vec;
    777 extern const bfd_target bfd_powerpcle_pei_vec;
    778 extern const bfd_target cris_aout_vec;
    779 extern const bfd_target demo_64_vec;
    780 extern const bfd_target ecoff_big_vec;
    781 extern const bfd_target ecoff_biglittle_vec;
    782 extern const bfd_target ecoff_little_vec;
    783 extern const bfd_target ecoffalpha_little_vec;
    784 extern const bfd_target go32coff_vec;
    785 extern const bfd_target go32stubbedcoff_vec;
    786 extern const bfd_target h8300coff_vec;
    787 extern const bfd_target h8500coff_vec;
    788 extern const bfd_target host_aout_vec;
    789 extern const bfd_target hp300bsd_vec;
    790 extern const bfd_target hp300hpux_vec;
    791 extern const bfd_target i386aout_vec;
    792 extern const bfd_target i386bsd_vec;
    793 extern const bfd_target i386coff_vec;
    794 extern const bfd_target i386dynix_vec;
    795 extern const bfd_target i386freebsd_vec;
    796 extern const bfd_target i386linux_vec;
    797 extern const bfd_target i386lynx_aout_vec;
    798 extern const bfd_target i386lynx_coff_vec;
    799 extern const bfd_target i386mach3_vec;
    800 extern const bfd_target i386msdos_vec;
    801 extern const bfd_target i386netbsd_vec;
    802 extern const bfd_target i386os9k_vec;
    803 extern const bfd_target i386pe_vec;
    804 extern const bfd_target i386pei_vec;
    805 extern const bfd_target i860coff_vec;
    806 extern const bfd_target icoff_big_vec;
    807 extern const bfd_target icoff_little_vec;
    808 extern const bfd_target ieee_vec;
    809 extern const bfd_target m68k4knetbsd_vec;
    810 extern const bfd_target m68kaux_coff_vec;
    811 extern const bfd_target m68kcoff_vec;
    812 extern const bfd_target m68kcoffun_vec;
    813 extern const bfd_target m68klinux_vec;
    814 extern const bfd_target m68knetbsd_vec;
    815 extern const bfd_target m68ksysvcoff_vec;
    816 extern const bfd_target m88kbcs_vec;
    817 extern const bfd_target m88kmach3_vec;
    818 extern const bfd_target m88kopenbsd_vec;
    819 extern const bfd_target mach_o_be_vec;
    820 extern const bfd_target mach_o_le_vec;
    821 extern const bfd_target mach_o_fat_vec;
    822 extern const bfd_target mach_o_i386_vec;
    823 extern const bfd_target mach_o_x86_64_vec;
    824 extern const bfd_target mcore_pe_big_vec;
    825 extern const bfd_target mcore_pe_little_vec;
    826 extern const bfd_target mcore_pei_big_vec;
    827 extern const bfd_target mcore_pei_little_vec;
    828 extern const bfd_target mipslpe_vec;
    829 extern const bfd_target mipslpei_vec;
    830 extern const bfd_target newsos3_vec;
    831 extern const bfd_target nlm32_alpha_vec;
    832 extern const bfd_target nlm32_i386_vec;
    833 extern const bfd_target nlm32_powerpc_vec;
    834 extern const bfd_target nlm32_sparc_vec;
    835 extern const bfd_target oasys_vec;
    836 extern const bfd_target or32coff_big_vec;
    837 extern const bfd_target pc532machaout_vec;
    838 extern const bfd_target pc532netbsd_vec;
    839 extern const bfd_target pdp11_aout_vec;
    840 extern const bfd_target pef_vec;
    841 extern const bfd_target pef_xlib_vec;
    842 extern const bfd_target plugin_vec;
    843 extern const bfd_target pmac_xcoff_vec;
    844 extern const bfd_target ppcboot_vec;
    845 extern const bfd_target riscix_vec;
    846 extern const bfd_target rs6000coff64_vec;
    847 extern const bfd_target rs6000coff_vec;
    848 extern const bfd_target shcoff_small_vec;
    849 extern const bfd_target shcoff_vec;
    850 extern const bfd_target shlcoff_small_vec;
    851 extern const bfd_target shlcoff_vec;
    852 extern const bfd_target shlpe_vec;
    853 extern const bfd_target shlpei_vec;
    854 extern const bfd_target som_vec;
    855 extern const bfd_target sparccoff_vec;
    856 extern const bfd_target sparcle_aout_vec;
    857 extern const bfd_target sparclinux_vec;
    858 extern const bfd_target sparclynx_aout_vec;
    859 extern const bfd_target sparclynx_coff_vec;
    860 extern const bfd_target sparcnetbsd_vec;
    861 extern const bfd_target sunos_big_vec;
    862 extern const bfd_target sym_vec;
    863 extern const bfd_target tic30_aout_vec;
    864 extern const bfd_target tic30_coff_vec;
    865 extern const bfd_target tic4x_coff0_beh_vec;
    866 extern const bfd_target tic4x_coff0_vec;
    867 extern const bfd_target tic4x_coff1_beh_vec;
    868 extern const bfd_target tic4x_coff1_vec;
    869 extern const bfd_target tic4x_coff2_beh_vec;
    870 extern const bfd_target tic4x_coff2_vec;
    871 extern const bfd_target tic54x_coff0_beh_vec;
    872 extern const bfd_target tic54x_coff0_vec;
    873 extern const bfd_target tic54x_coff1_beh_vec;
    874 extern const bfd_target tic54x_coff1_vec;
    875 extern const bfd_target tic54x_coff2_beh_vec;
    876 extern const bfd_target tic54x_coff2_vec;
    877 extern const bfd_target tic80coff_vec;
    878 extern const bfd_target vaxbsd_vec;
    879 extern const bfd_target vaxnetbsd_vec;
    880 extern const bfd_target vax1knetbsd_vec;
    881 extern const bfd_target versados_vec;
    882 extern const bfd_target vms_alpha_vec;
    883 extern const bfd_target vms_lib_txt_vec;
    884 extern const bfd_target w65_vec;
    885 extern const bfd_target we32kcoff_vec;
    886 extern const bfd_target x86_64pe_vec;
    887 extern const bfd_target x86_64pei_vec;
    888 extern const bfd_target x86_64coff_vec;
    889 extern const bfd_target z80coff_vec;
    890 extern const bfd_target z8kcoff_vec;
    891 
    892 /* These are always included.  */
    893 extern const bfd_target srec_vec;
    894 extern const bfd_target verilog_vec;
    895 extern const bfd_target symbolsrec_vec;
    896 extern const bfd_target tekhex_vec;
    897 extern const bfd_target binary_vec;
    898 extern const bfd_target ihex_vec;
    899 
    900 /* All of the xvecs for core files.  */
    901 extern const bfd_target aix386_core_vec;
    902 extern const bfd_target cisco_core_big_vec;
    903 extern const bfd_target cisco_core_little_vec;
    904 extern const bfd_target hppabsd_core_vec;
    905 extern const bfd_target hpux_core_vec;
    906 extern const bfd_target irix_core_vec;
    907 extern const bfd_target netbsd_core_vec;
    908 extern const bfd_target osf_core_vec;
    909 extern const bfd_target ptrace_core_vec;
    910 extern const bfd_target sco5_core_vec;
    911 extern const bfd_target trad_core_vec;
    912 
    913 extern const bfd_target bfd_elf32_am33lin_vec;
    914 static const bfd_target * const _bfd_target_vector[] =
    915 {
    916 #ifdef SELECT_VECS
    917 
    918 	SELECT_VECS,
    919 
    920 #else /* not SELECT_VECS */
    921 
    922 #ifdef DEFAULT_VECTOR
    923 	&DEFAULT_VECTOR,
    924 #endif
    925 	/* This list is alphabetized to make it easy to compare
    926 	   with other vector lists -- the decls above and
    927 	   the case statement in configure.in.
    928 	   Vectors that don't compile on all systems, or aren't finished,
    929 	   should have an entry here with #if 0 around it, to show that
    930 	   it wasn't omitted by mistake.  */
    931 	&a_out_adobe_vec,
    932 #ifdef BFD64
    933 	&aix5coff64_vec,
    934 #endif
    935 	&aout0_big_vec,
    936 #if 0
    937 	/* We have no way of distinguishing these from other a.out variants.  */
    938 	&aout_arm_big_vec,
    939 	&aout_arm_little_vec,
    940 	/* No one seems to use this.  */
    941 	&aout_mips_big_vec,
    942 #endif
    943 	&aout_mips_little_vec,
    944 #if 0
    945 	&apollocoff_vec,
    946 #endif
    947 	&arm_epoc_pe_big_vec,
    948 	&arm_epoc_pe_little_vec,
    949 	&arm_epoc_pei_big_vec,
    950 	&arm_epoc_pei_little_vec,
    951 	&arm_wince_pe_big_vec,
    952 	&arm_wince_pe_little_vec,
    953 	&arm_wince_pei_big_vec,
    954 	&arm_wince_pei_little_vec,
    955 	&armcoff_big_vec,
    956 	&armcoff_little_vec,
    957 	&armnetbsd_vec,
    958 	&armpe_big_vec,
    959 	&armpe_little_vec,
    960 	&armpei_big_vec,
    961 	&armpei_little_vec,
    962 	&b_out_vec_big_host,
    963 	&b_out_vec_little_host,
    964 #ifdef BFD64
    965 	&bfd_pei_ia64_vec,
    966 #endif
    967 	&bfd_elf32_avr_vec,
    968 	&bfd_elf32_bfin_vec,
    969 	&bfd_elf32_bfinfdpic_vec,
    970 
    971 	/* This, and other vectors, may not be used in any *.mt configuration.
    972 	   But that does not mean they are unnecessary.  If configured with
    973 	   --enable-targets=all, objdump or gdb should be able to examine
    974 	   the file even if we don't recognize the machine type.  */
    975 	&bfd_elf32_big_generic_vec,
    976 	&bfd_elf32_bigarc_vec,
    977 	&bfd_elf32_bigarm_vec,
    978 	&bfd_elf32_bigarm_symbian_vec,
    979 	&bfd_elf32_bigarm_vxworks_vec,
    980 	&bfd_elf32_bigmips_vec,
    981 	&bfd_elf32_bigmips_vxworks_vec,
    982 	&bfd_elf32_cr16_vec,
    983 	&bfd_elf32_cr16c_vec,
    984 	&bfd_elf32_cris_vec,
    985 	&bfd_elf32_crx_vec,
    986 	&bfd_elf32_d10v_vec,
    987 	&bfd_elf32_d30v_vec,
    988 	&bfd_elf32_dlx_big_vec,
    989 	&bfd_elf32_epiphany_vec,
    990 	&bfd_elf32_fr30_vec,
    991 	&bfd_elf32_frv_vec,
    992 	&bfd_elf32_frvfdpic_vec,
    993  	&bfd_elf32_moxie_vec,
    994 	&bfd_elf32_h8300_vec,
    995 	&bfd_elf32_hppa_linux_vec,
    996 	&bfd_elf32_hppa_nbsd_vec,
    997 	&bfd_elf32_hppa_vec,
    998 	&bfd_elf32_i370_vec,
    999 	&bfd_elf32_i386_freebsd_vec,
   1000 	&bfd_elf32_i386_nacl_vec,
   1001 	&bfd_elf32_i386_sol2_vec,
   1002 	&bfd_elf32_i386_vxworks_vec,
   1003 	&bfd_elf32_i386_vec,
   1004 	&bfd_elf32_i860_little_vec,
   1005 	&bfd_elf32_i860_vec,
   1006 	&bfd_elf32_i960_vec,
   1007 #if 0
   1008 	&bfd_elf32_ia64_big_vec,
   1009 #endif
   1010 #ifdef BFD64
   1011 	&bfd_elf32_ia64_hpux_big_vec,
   1012 #endif
   1013 	&bfd_elf32_ip2k_vec,
   1014 	&bfd_elf32_iq2000_vec,
   1015 	&bfd_elf32_lm32_vec,
   1016 	&bfd_elf32_little_generic_vec,
   1017 	&bfd_elf32_littlearc_vec,
   1018 	&bfd_elf32_littlearm_vec,
   1019 	&bfd_elf32_littlearm_symbian_vec,
   1020 	&bfd_elf32_littlearm_vxworks_vec,
   1021 	&bfd_elf32_littlemips_vec,
   1022 	&bfd_elf32_littlemips_vxworks_vec,
   1023 	&bfd_elf32_m32c_vec,
   1024 	&bfd_elf32_m32r_vec,
   1025         &bfd_elf32_m32rle_vec,
   1026         &bfd_elf32_m32rlin_vec,
   1027         &bfd_elf32_m32rlelin_vec,
   1028 	&bfd_elf32_m68hc11_vec,
   1029 	&bfd_elf32_m68hc12_vec,
   1030 	&bfd_elf32_m68k_vec,
   1031 	&bfd_elf32_m88k_vec,
   1032 	&bfd_elf32_mcore_big_vec,
   1033 	&bfd_elf32_mcore_little_vec,
   1034 	&bfd_elf32_mep_vec,
   1035 	&bfd_elf32_microblaze_vec,
   1036 	&bfd_elf32_mn10200_vec,
   1037 	&bfd_elf32_mn10300_vec,
   1038 	&bfd_elf32_mt_vec,
   1039 	&bfd_elf32_msp430_vec,
   1040 #ifdef BFD64
   1041 	&bfd_elf32_nbigmips_vec,
   1042 	&bfd_elf32_nlittlemips_vec,
   1043 	&bfd_elf32_ntradbigmips_vec,
   1044 	&bfd_elf32_ntradlittlemips_vec,
   1045 	&bfd_elf32_ntradbigmips_freebsd_vec,
   1046 	&bfd_elf32_ntradlittlemips_freebsd_vec,
   1047 #endif
   1048 	&bfd_elf32_openrisc_vec,
   1049 	&bfd_elf32_or32_big_vec,
   1050 	&bfd_elf32_pj_vec,
   1051 	&bfd_elf32_pjl_vec,
   1052 	&bfd_elf32_powerpc_vec,
   1053 	&bfd_elf32_powerpc_vxworks_vec,
   1054 	&bfd_elf32_powerpcle_vec,
   1055 	&bfd_elf32_powerpc_freebsd_vec,
   1056 	&bfd_elf32_rl78_vec,
   1057 	&bfd_elf32_rx_be_vec,
   1058 	&bfd_elf32_rx_be_ns_vec,
   1059 	&bfd_elf32_rx_le_vec,
   1060 	&bfd_elf32_s390_vec,
   1061 #ifdef BFD64
   1062 	&bfd_elf32_bigscore_vec,
   1063 	&bfd_elf32_littlescore_vec,
   1064 #endif
   1065         &bfd_elf32_sh_vec,
   1066         &bfd_elf32_shbfd_vec,
   1067         &bfd_elf32_shblin_vec,
   1068         &bfd_elf32_shfd_vec,
   1069         &bfd_elf32_shl_vec,
   1070         &bfd_elf32_shl_symbian_vec,
   1071         &bfd_elf32_shlin_vec,
   1072 	&bfd_elf32_shlnbsd_vec,
   1073 	&bfd_elf32_shlvxworks_vec,
   1074 	&bfd_elf32_shnbsd_vec,
   1075 	&bfd_elf32_shvxworks_vec,
   1076 #ifdef BFD64
   1077 	&bfd_elf32_sh64_vec,
   1078 	&bfd_elf32_sh64l_vec,
   1079 	&bfd_elf32_sh64lnbsd_vec,
   1080 	&bfd_elf32_sh64nbsd_vec,
   1081 	&bfd_elf32_sh64lin_vec,
   1082 	&bfd_elf32_sh64blin_vec,
   1083 #endif
   1084 	&bfd_elf32_sparc_vec,
   1085 	&bfd_elf32_sparc_sol2_vec,
   1086 	&bfd_elf32_sparc_vxworks_vec,
   1087 	&bfd_elf32_spu_vec,
   1088 	&bfd_elf32_tic6x_be_vec,
   1089 	&bfd_elf32_tic6x_le_vec,
   1090 	&bfd_elf32_tilegx_be_vec,
   1091 	&bfd_elf32_tilegx_le_vec,
   1092 	&bfd_elf32_tilepro_vec,
   1093 	&bfd_elf32_tradbigmips_vec,
   1094 	&bfd_elf32_tradlittlemips_vec,
   1095 	&bfd_elf32_tradbigmips_freebsd_vec,
   1096 	&bfd_elf32_tradlittlemips_freebsd_vec,
   1097 	&bfd_elf32_us_cris_vec,
   1098 	&bfd_elf32_v850_vec,
   1099 	&bfd_elf32_vax_vec,
   1100 	&bfd_elf32_xc16x_vec,
   1101 	&bfd_elf32_xgate_vec,
   1102 	&bfd_elf32_xstormy16_vec,
   1103 	&bfd_elf32_xtensa_be_vec,
   1104 	&bfd_elf32_xtensa_le_vec,
   1105 #ifdef BFD64
   1106 	&bfd_elf64_alpha_freebsd_vec,
   1107 	&bfd_elf64_alpha_vec,
   1108 	&bfd_elf64_big_generic_vec,
   1109 	&bfd_elf64_bigmips_vec,
   1110 	&bfd_elf64_bigaarch64_vec,
   1111 	&bfd_elf64_hppa_linux_vec,
   1112 	&bfd_elf64_hppa_vec,
   1113 	&bfd_elf64_ia64_big_vec,
   1114 	&bfd_elf64_ia64_hpux_big_vec,
   1115 	&bfd_elf64_ia64_little_vec,
   1116 	&bfd_elf64_ia64_vms_vec,
   1117 	&bfd_elf64_little_generic_vec,
   1118 	&bfd_elf64_littlemips_vec,
   1119 	&bfd_elf64_littleaarch64_vec,
   1120 	&bfd_elf64_mmix_vec,
   1121 	&bfd_elf64_powerpc_vec,
   1122 	&bfd_elf64_powerpcle_vec,
   1123 	&bfd_elf64_powerpc_freebsd_vec,
   1124 	&bfd_elf64_s390_vec,
   1125 	&bfd_elf64_sh64_vec,
   1126 	&bfd_elf64_sh64l_vec,
   1127 	&bfd_elf64_sh64lnbsd_vec,
   1128 	&bfd_elf64_sh64nbsd_vec,
   1129 	&bfd_elf64_sh64lin_vec,
   1130 	&bfd_elf64_sh64blin_vec,
   1131 	&bfd_elf64_sparc_vec,
   1132 	&bfd_elf64_sparc_freebsd_vec,
   1133 	&bfd_elf64_sparc_sol2_vec,
   1134 	&bfd_elf64_tilegx_be_vec,
   1135 	&bfd_elf64_tilegx_le_vec,
   1136 	&bfd_elf64_tradbigmips_vec,
   1137 	&bfd_elf64_tradlittlemips_vec,
   1138 	&bfd_elf64_tradbigmips_freebsd_vec,
   1139 	&bfd_elf64_tradlittlemips_freebsd_vec,
   1140 	&bfd_elf64_x86_64_freebsd_vec,
   1141 	&bfd_elf64_x86_64_nacl_vec,
   1142 	&bfd_elf64_x86_64_sol2_vec,
   1143 	&bfd_elf64_x86_64_vec,
   1144 	&bfd_elf32_x86_64_nacl_vec,
   1145 	&bfd_elf32_x86_64_vec,
   1146 	&bfd_elf64_l1om_freebsd_vec,
   1147 	&bfd_elf64_l1om_vec,
   1148 	&bfd_elf64_k1om_freebsd_vec,
   1149 	&bfd_elf64_k1om_vec,
   1150 	&bfd_mmo_vec,
   1151 #endif
   1152 	&bfd_powerpc_pe_vec,
   1153 	&bfd_powerpc_pei_vec,
   1154 	&bfd_powerpcle_pe_vec,
   1155 	&bfd_powerpcle_pei_vec,
   1156 	&cris_aout_vec,
   1157 #ifdef BFD64
   1158 	&demo_64_vec,	/* Only compiled if host has long-long support.  */
   1159 #endif
   1160 	&ecoff_big_vec,
   1161 	&ecoff_biglittle_vec,
   1162 	&ecoff_little_vec,
   1163 #ifdef BFD64
   1164 	&ecoffalpha_little_vec,
   1165 #endif
   1166 	&go32coff_vec,
   1167 	&go32stubbedcoff_vec,
   1168 	&h8300coff_vec,
   1169 	&h8500coff_vec,
   1170 #if 0
   1171 	/* Since a.out files lack decent magic numbers, no way to recognize
   1172 	   which kind of a.out file it is.  */
   1173 	&host_aout_vec,
   1174 	/* Clashes with sunos_big_vec magic no.  */
   1175 	&hp300bsd_vec,
   1176 #endif
   1177 	&hp300hpux_vec,
   1178 	&i386aout_vec,
   1179 	&i386bsd_vec,
   1180 	&i386coff_vec,
   1181 #if 0
   1182 	&i386dynix_vec,
   1183 #endif
   1184 	&i386freebsd_vec,
   1185 #if 0
   1186 	/* Since a.out files lack decent magic numbers, no way to recognize
   1187 	   which kind of a.out file it is.  */
   1188 	&i386linux_vec,
   1189 #endif
   1190 	&i386lynx_aout_vec,
   1191 	&i386lynx_coff_vec,
   1192 #if 0
   1193 	/* No distinguishing features for Mach 3 executables.  */
   1194 	&i386mach3_vec,
   1195 #endif
   1196 	&i386msdos_vec,
   1197 	&i386netbsd_vec,
   1198 	&i386os9k_vec,
   1199 	&i386pe_vec,
   1200 	&i386pei_vec,
   1201 #ifdef BFD64
   1202 	&x86_64coff_vec,
   1203 	&x86_64pe_vec,
   1204 	&x86_64pei_vec,
   1205 #endif
   1206 	&i860coff_vec,
   1207 	&icoff_big_vec,
   1208 	&icoff_little_vec,
   1209 	&ieee_vec,
   1210 #if 0
   1211 	&m68k4knetbsd_vec,
   1212 	&m68kaux_coff_vec,
   1213 #endif
   1214 	&m68kcoff_vec,
   1215 	&m68kcoffun_vec,
   1216 #if 0
   1217 	/* Since a.out files lack decent magic numbers, no way to recognize
   1218 	   which kind of a.out file it is.  */
   1219 	&m68klinux_vec,
   1220 #endif
   1221 	&m68knetbsd_vec,
   1222 	&m68ksysvcoff_vec,
   1223 	&m88kbcs_vec,
   1224 	&m88kmach3_vec,
   1225 	&m88kopenbsd_vec,
   1226 	&mach_o_be_vec,
   1227 	&mach_o_le_vec,
   1228 	&mach_o_fat_vec,
   1229 	&mach_o_i386_vec,
   1230 #ifdef BFD64
   1231 	&mach_o_x86_64_vec,
   1232 #endif
   1233 	&mcore_pe_big_vec,
   1234 	&mcore_pe_little_vec,
   1235 	&mcore_pei_big_vec,
   1236 	&mcore_pei_little_vec,
   1237 	&mipslpe_vec,
   1238 	&mipslpei_vec,
   1239 	&newsos3_vec,
   1240 #ifdef BFD64
   1241 	&nlm32_alpha_vec,
   1242 #endif
   1243 	&nlm32_i386_vec,
   1244 	&nlm32_powerpc_vec,
   1245 	&nlm32_sparc_vec,
   1246 #if 0
   1247 	/* We have no oasys tools anymore, so we can't test any of this
   1248 	   anymore. If you want to test the stuff yourself, go ahead...
   1249 	   steve (at) cygnus.com
   1250 	   Worse, since there is no magic number for archives, there
   1251 	   can be annoying target mis-matches.  */
   1252 	&oasys_vec,
   1253 #endif
   1254 	/* Entry for the OpenRISC family.  */
   1255 	&or32coff_big_vec,
   1256 
   1257 	&pc532machaout_vec,
   1258 	&pc532netbsd_vec,
   1259 	&pdp11_aout_vec,
   1260 	&pef_vec,
   1261 	&pef_xlib_vec,
   1262 #if BFD_SUPPORTS_PLUGINS
   1263 	&plugin_vec,
   1264 #endif
   1265 #if 0
   1266 	/* This has the same magic number as RS/6000.  */
   1267 	&pmac_xcoff_vec,
   1268 #endif
   1269 	&ppcboot_vec,
   1270 #if 0
   1271 	/* We have no way of distinguishing these from other a.out variants.  */
   1272 	&riscix_vec,
   1273 #endif
   1274 #ifdef BFD64
   1275 	&rs6000coff64_vec,
   1276 #endif
   1277 	&rs6000coff_vec,
   1278 	&shcoff_small_vec,
   1279 	&shcoff_vec,
   1280 	&shlcoff_small_vec,
   1281 	&shlcoff_vec,
   1282 	&shlpe_vec,
   1283 	&shlpei_vec,
   1284 	&som_vec,
   1285 	&sparccoff_vec,
   1286 	&sparcle_aout_vec,
   1287 	&sparclinux_vec,
   1288 	&sparclynx_aout_vec,
   1289 	&sparclynx_coff_vec,
   1290 	&sparcnetbsd_vec,
   1291 	&sunos_big_vec,
   1292 	&sym_vec,
   1293 	&tic30_aout_vec,
   1294 	&tic30_coff_vec,
   1295 	&tic54x_coff0_beh_vec,
   1296 	&tic54x_coff0_vec,
   1297 	&tic54x_coff1_beh_vec,
   1298 	&tic54x_coff1_vec,
   1299 	&tic54x_coff2_beh_vec,
   1300 	&tic54x_coff2_vec,
   1301 	&tic80coff_vec,
   1302 	&vaxbsd_vec,
   1303 	&vaxnetbsd_vec,
   1304 	&vax1knetbsd_vec,
   1305 	&versados_vec,
   1306 #ifdef BFD64
   1307 	&vms_alpha_vec,
   1308 #endif
   1309         &vms_lib_txt_vec,
   1310 	&w65_vec,
   1311 	&we32kcoff_vec,
   1312 	&z80coff_vec,
   1313 	&z8kcoff_vec,
   1314 	&bfd_elf32_am33lin_vec,
   1315 #endif /* not SELECT_VECS */
   1316 
   1317 /* Always support S-records, for convenience.  */
   1318 	&srec_vec,
   1319 	&symbolsrec_vec,
   1320 /* And verilog.  */
   1321 	&verilog_vec,
   1322 /* And tekhex */
   1323 	&tekhex_vec,
   1324 /* Likewise for binary output.  */
   1325 	&binary_vec,
   1326 /* Likewise for ihex.  */
   1327 	&ihex_vec,
   1328 
   1329 /* Add any required traditional-core-file-handler.  */
   1330 
   1331 #ifdef AIX386_CORE
   1332 	&aix386_core_vec,
   1333 #endif
   1334 #if 0
   1335 	/* We don't include cisco_core_*_vec.  Although it has a magic number,
   1336 	   the magic number isn't at the beginning of the file, and thus
   1337 	   might spuriously match other kinds of files.  */
   1338 	&cisco_core_big_vec,
   1339 	&cisco_core_little_vec,
   1340 #endif
   1341 #ifdef HPPABSD_CORE
   1342 	&hppabsd_core_vec,
   1343 #endif
   1344 #ifdef HPUX_CORE
   1345 	&hpux_core_vec,
   1346 #endif
   1347 #ifdef IRIX_CORE
   1348 	&irix_core_vec,
   1349 #endif
   1350 #ifdef NETBSD_CORE
   1351 	&netbsd_core_vec,
   1352 #endif
   1353 #ifdef OSF_CORE
   1354 	&osf_core_vec,
   1355 #endif
   1356 #ifdef PTRACE_CORE
   1357 	&ptrace_core_vec,
   1358 #endif
   1359 #ifdef SCO5_CORE
   1360 	&sco5_core_vec,
   1361 #endif
   1362 #ifdef TRAD_CORE
   1363 	&trad_core_vec,
   1364 #endif
   1365 
   1366 	NULL /* end of list marker */
   1367 };
   1368 const bfd_target * const *bfd_target_vector = _bfd_target_vector;
   1369 
   1370 /* bfd_default_vector[0] contains either the address of the default vector,
   1371    if there is one, or zero if there isn't.  */
   1372 
   1373 const bfd_target *bfd_default_vector[] = {
   1374 #ifdef DEFAULT_VECTOR
   1375 	&DEFAULT_VECTOR,
   1376 #endif
   1377 	NULL
   1378 };
   1379 
   1380 /* bfd_associated_vector[] contains the associated target vectors used
   1381    to reduce the ambiguity in bfd_check_format_matches.  */
   1382 
   1383 static const bfd_target *_bfd_associated_vector[] = {
   1384 #ifdef ASSOCIATED_VECS
   1385 	ASSOCIATED_VECS,
   1386 #endif
   1387 	NULL
   1388 };
   1389 const bfd_target * const *bfd_associated_vector = _bfd_associated_vector;
   1390 
   1391 /* When there is an ambiguous match, bfd_check_format_matches puts the
   1392    names of the matching targets in an array.  This variable is the maximum
   1393    number of entries that the array could possibly need.  */
   1394 const size_t _bfd_target_vector_entries = sizeof (_bfd_target_vector)/sizeof (*_bfd_target_vector);
   1395 
   1396 /* This array maps configuration triplets onto BFD vectors.  */
   1398 
   1399 struct targmatch
   1400 {
   1401   /* The configuration triplet.  */
   1402   const char *triplet;
   1403   /* The BFD vector.  If this is NULL, then the vector is found by
   1404      searching forward for the next structure with a non NULL vector
   1405      field.  */
   1406   const bfd_target *vector;
   1407 };
   1408 
   1409 /* targmatch.h is built by Makefile out of config.bfd.  */
   1410 static const struct targmatch bfd_target_match[] = {
   1411 #include "targmatch.h"
   1412   { NULL, NULL }
   1413 };
   1414 
   1415 /* Find a target vector, given a name or configuration triplet.  */
   1416 
   1417 static const bfd_target *
   1418 find_target (const char *name)
   1419 {
   1420   const bfd_target * const *target;
   1421   const struct targmatch *match;
   1422 
   1423   for (target = &bfd_target_vector[0]; *target != NULL; target++)
   1424     if (strcmp (name, (*target)->name) == 0)
   1425       return *target;
   1426 
   1427   /* If we couldn't match on the exact name, try matching on the
   1428      configuration triplet.  FIXME: We should run the triplet through
   1429      config.sub first, but that is hard.  */
   1430   for (match = &bfd_target_match[0]; match->triplet != NULL; match++)
   1431     {
   1432       if (fnmatch (match->triplet, name, 0) == 0)
   1433 	{
   1434 	  while (match->vector == NULL)
   1435 	    ++match;
   1436 	  return match->vector;
   1437 	}
   1438     }
   1439 
   1440   bfd_set_error (bfd_error_invalid_target);
   1441   return NULL;
   1442 }
   1443 
   1444 /*
   1445 FUNCTION
   1446 	bfd_set_default_target
   1447 
   1448 SYNOPSIS
   1449 	bfd_boolean bfd_set_default_target (const char *name);
   1450 
   1451 DESCRIPTION
   1452 	Set the default target vector to use when recognizing a BFD.
   1453 	This takes the name of the target, which may be a BFD target
   1454 	name or a configuration triplet.
   1455 */
   1456 
   1457 bfd_boolean
   1458 bfd_set_default_target (const char *name)
   1459 {
   1460   const bfd_target *target;
   1461 
   1462   if (bfd_default_vector[0] != NULL
   1463       && strcmp (name, bfd_default_vector[0]->name) == 0)
   1464     return TRUE;
   1465 
   1466   target = find_target (name);
   1467   if (target == NULL)
   1468     return FALSE;
   1469 
   1470   bfd_default_vector[0] = target;
   1471   return TRUE;
   1472 }
   1473 
   1474 /*
   1475 FUNCTION
   1476 	bfd_find_target
   1477 
   1478 SYNOPSIS
   1479 	const bfd_target *bfd_find_target (const char *target_name, bfd *abfd);
   1480 
   1481 DESCRIPTION
   1482 	Return a pointer to the transfer vector for the object target
   1483 	named @var{target_name}.  If @var{target_name} is <<NULL>>,
   1484 	choose the one in the environment variable <<GNUTARGET>>; if
   1485 	that is null or not defined, then choose the first entry in the
   1486 	target list.  Passing in the string "default" or setting the
   1487 	environment variable to "default" will cause the first entry in
   1488 	the target list to be returned, and "target_defaulted" will be
   1489 	set in the BFD if @var{abfd} isn't <<NULL>>.  This causes
   1490 	<<bfd_check_format>> to loop over all the targets to find the
   1491 	one that matches the file being read.
   1492 */
   1493 
   1494 const bfd_target *
   1495 bfd_find_target (const char *target_name, bfd *abfd)
   1496 {
   1497   const char *targname;
   1498   const bfd_target *target;
   1499 
   1500   if (target_name != NULL)
   1501     targname = target_name;
   1502   else
   1503     targname = getenv ("GNUTARGET");
   1504 
   1505   /* This is safe; the vector cannot be null.  */
   1506   if (targname == NULL || strcmp (targname, "default") == 0)
   1507     {
   1508       if (bfd_default_vector[0] != NULL)
   1509 	target = bfd_default_vector[0];
   1510       else
   1511 	target = bfd_target_vector[0];
   1512       if (abfd)
   1513 	{
   1514 	  abfd->xvec = target;
   1515 	  abfd->target_defaulted = TRUE;
   1516 	}
   1517       return target;
   1518     }
   1519 
   1520   if (abfd)
   1521     abfd->target_defaulted = FALSE;
   1522 
   1523   target = find_target (targname);
   1524   if (target == NULL)
   1525     return NULL;
   1526 
   1527   if (abfd)
   1528     abfd->xvec = target;
   1529   return target;
   1530 }
   1531 
   1532 /* Helper function for bfd_get_target_info to determine the target's
   1533    architecture.  This method handles bfd internal target names as
   1534    tuples and triplets.  */
   1535 static bfd_boolean
   1536 _bfd_find_arch_match (const char *tname, const char **arch,
   1537 		      const char **def_target_arch)
   1538 {
   1539   if (!arch)
   1540     return FALSE;
   1541 
   1542   while (*arch != NULL)
   1543     {
   1544       const char *in_a = strstr (*arch, tname);
   1545       char end_ch = (in_a ? in_a[strlen (tname)] : 0);
   1546 
   1547       if (in_a && (in_a == *arch || in_a[-1] == ':')
   1548           && end_ch == 0)
   1549         {
   1550           *def_target_arch = *arch;
   1551           return TRUE;
   1552         }
   1553       arch++;
   1554     }
   1555   return FALSE;
   1556 }
   1557 
   1558 /*
   1559 FUNCTION
   1560 	bfd_get_target_info
   1561 SYNOPSIS
   1562 	const bfd_target *bfd_get_target_info (const char *target_name,
   1563 					       bfd *abfd,
   1564 				 	       bfd_boolean *is_bigendian,
   1565 					       int *underscoring,
   1566 					       const char **def_target_arch);
   1567 DESCRIPTION
   1568         Return a pointer to the transfer vector for the object target
   1569         named @var{target_name}.  If @var{target_name} is <<NULL>>,
   1570         choose the one in the environment variable <<GNUTARGET>>; if
   1571         that is null or not defined, then choose the first entry in the
   1572         target list.  Passing in the string "default" or setting the
   1573         environment variable to "default" will cause the first entry in
   1574         the target list to be returned, and "target_defaulted" will be
   1575         set in the BFD if @var{abfd} isn't <<NULL>>.  This causes
   1576         <<bfd_check_format>> to loop over all the targets to find the
   1577         one that matches the file being read.
   1578 	If @var{is_bigendian} is not <<NULL>>, then set this value to target's
   1579 	endian mode. True for big-endian, FALSE for little-endian or for
   1580 	invalid target.
   1581 	If @var{underscoring} is not <<NULL>>, then set this value to target's
   1582 	underscoring mode. Zero for none-underscoring, -1 for invalid target,
   1583 	else the value of target vector's symbol underscoring.
   1584 	If @var{def_target_arch} is not <<NULL>>, then set it to the architecture
   1585 	string specified by the target_name.
   1586 */
   1587 const bfd_target *
   1588 bfd_get_target_info (const char *target_name, bfd *abfd,
   1589 		     bfd_boolean *is_bigendian,
   1590 		     int *underscoring, const char **def_target_arch)
   1591 {
   1592   const bfd_target *target_vec;
   1593 
   1594   if (is_bigendian)
   1595     *is_bigendian = FALSE;
   1596   if (underscoring)
   1597     *underscoring = -1;
   1598   if (def_target_arch)
   1599     *def_target_arch = NULL;
   1600   target_vec = bfd_find_target (target_name, abfd);
   1601   if (! target_vec)
   1602     return NULL;
   1603   if (is_bigendian)
   1604     *is_bigendian = ((target_vec->byteorder == BFD_ENDIAN_BIG) ? TRUE
   1605 							       : FALSE);
   1606   if (underscoring)
   1607     *underscoring = ((int) target_vec->symbol_leading_char) & 0xff;
   1608 
   1609   if (def_target_arch)
   1610     {
   1611       const char *tname = target_vec->name;
   1612       const char **arches = bfd_arch_list ();
   1613 
   1614       if (arches && tname)
   1615         {
   1616           char *hyp = strchr (tname, '-');
   1617 
   1618           if (hyp != NULL)
   1619             {
   1620               tname = ++hyp;
   1621 
   1622 	      /* Make sure we detect architecture names
   1623 		 for triplets like "pe-arm-wince-little".  */
   1624 	      if (!_bfd_find_arch_match (tname, arches, def_target_arch))
   1625 		{
   1626 		  char new_tname[50];
   1627 
   1628 		  strcpy (new_tname, hyp);
   1629 		  while ((hyp = strrchr (new_tname, '-')) != NULL)
   1630 		    {
   1631 		      *hyp = 0;
   1632 		      if (_bfd_find_arch_match (new_tname, arches,
   1633 			  			def_target_arch))
   1634 			break;
   1635 		    }
   1636 		}
   1637 	    }
   1638 	  else
   1639 	    _bfd_find_arch_match (tname, arches, def_target_arch);
   1640 	}
   1641 
   1642       if (arches)
   1643         free (arches);
   1644     }
   1645   return target_vec;
   1646 }
   1647 
   1648 /*
   1649 FUNCTION
   1650 	bfd_target_list
   1651 
   1652 SYNOPSIS
   1653 	const char ** bfd_target_list (void);
   1654 
   1655 DESCRIPTION
   1656 	Return a freshly malloced NULL-terminated
   1657 	vector of the names of all the valid BFD targets. Do not
   1658 	modify the names.
   1659 
   1660 */
   1661 
   1662 const char **
   1663 bfd_target_list (void)
   1664 {
   1665   int vec_length = 0;
   1666   bfd_size_type amt;
   1667   const bfd_target * const *target;
   1668   const  char **name_list, **name_ptr;
   1669 
   1670   for (target = &bfd_target_vector[0]; *target != NULL; target++)
   1671     vec_length++;
   1672 
   1673   amt = (vec_length + 1) * sizeof (char **);
   1674   name_ptr = name_list = (const  char **) bfd_malloc (amt);
   1675 
   1676   if (name_list == NULL)
   1677     return NULL;
   1678 
   1679   for (target = &bfd_target_vector[0]; *target != NULL; target++)
   1680     if (target == &bfd_target_vector[0]
   1681 	|| *target != bfd_target_vector[0])
   1682       *name_ptr++ = (*target)->name;
   1683 
   1684   *name_ptr = NULL;
   1685   return name_list;
   1686 }
   1687 
   1688 /*
   1689 FUNCTION
   1690 	bfd_seach_for_target
   1691 
   1692 SYNOPSIS
   1693 	const bfd_target *bfd_search_for_target
   1694 	  (int (*search_func) (const bfd_target *, void *),
   1695 	   void *);
   1696 
   1697 DESCRIPTION
   1698 	Return a pointer to the first transfer vector in the list of
   1699 	transfer vectors maintained by BFD that produces a non-zero
   1700 	result when passed to the function @var{search_func}.  The
   1701 	parameter @var{data} is passed, unexamined, to the search
   1702 	function.
   1703 */
   1704 
   1705 const bfd_target *
   1706 bfd_search_for_target (int (*search_func) (const bfd_target *, void *),
   1707 		       void *data)
   1708 {
   1709   const bfd_target * const *target;
   1710 
   1711   for (target = bfd_target_vector; *target != NULL; target ++)
   1712     if (search_func (*target, data))
   1713       return *target;
   1714 
   1715   return NULL;
   1716 }
   1717