bfd/targets.c

   1 /* Generic target-file-type support for the BFD library.
   2    Copyright 1990, 91, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
   3    Written by Cygnus Support.
   4
   5 This file is part of BFD, the Binary File Descriptor library.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #include "bfd.h"
  22 #include "sysdep.h"
  23 #include "libbfd.h"
  24 #include "fnmatch.h"
  25
  26 /*
  27 SECTION
  28         Targets
  29
  30 DESCRIPTION
  31         Each port of BFD to a different machine requries the creation
  32         of a target back end. All the back end provides to the root
  33         part of BFD is a structure containing pointers to functions
  34         which perform certain low level operations on files. BFD
  35         translates the applications's requests through a pointer into
  36         calls to the back end routines.
  37
  38         When a file is opened with <<bfd_openr>>, its format and
  39         target are unknown. BFD uses various mechanisms to determine
  40         how to interpret the file. The operations performed are:
  41
  42         o Create a BFD by calling the internal routine
  43         <<_bfd_new_bfd>>, then call <<bfd_find_target>> with the
  44         target string supplied to <<bfd_openr>> and the new BFD pointer.
  45
  46         o If a null target string was provided to <<bfd_find_target>>,
  47         look up the environment variable <<GNUTARGET>> and use
  48         that as the target string.
  49
  50         o If the target string is still <<NULL>>, or the target string is
  51         <<default>>, then use the first item in the target vector
  52         as the target type, and set <<target_defaulted>> in the BFD to
  53         cause <<bfd_check_format>> to loop through all the targets.
  54         @xref{bfd_target}.  @xref{Formats}.
  55
  56         o Otherwise, inspect the elements in the target vector
  57         one by one, until a match on target name is found. When found,
  58         use it.
  59
  60         o Otherwise return the error <<bfd_error_invalid_target>> to
  61         <<bfd_openr>>.
  62
  63         o <<bfd_openr>> attempts to open the file using
  64         <<bfd_open_file>>, and returns the BFD.
  65
  66         Once the BFD has been opened and the target selected, the file
  67         format may be determined. This is done by calling
  68         <<bfd_check_format>> on the BFD with a suggested format.
  69         If <<target_defaulted>> has been set, each possible target
  70         type is tried to see if it recognizes the specified format.
  71         <<bfd_check_format>> returns <<true>> when the caller guesses right.
  72 @menu
  73 @* bfd_target::
  74 @end menu
  75 */
  76
  77
  78 /*
  79
  80 INODE
  81         bfd_target,  , Targets, Targets
  82 DOCDD
  83 SUBSECTION
  84         bfd_target
  85
  86 DESCRIPTION
  87         This structure contains everything that BFD knows about a
  88         target. It includes things like its byte order, name, and which
  89         routines to call to do various operations.
  90
  91         Every BFD points to a target structure with its <<xvec>>
  92         member.
  93
  94         The macros below are used to dispatch to functions through the
  95         <<bfd_target>> vector. They are used in a number of macros further
  96         down in @file{bfd.h}, and are also used when calling various
  97         routines by hand inside the BFD implementation.  The @var{arglist}
  98         argument must be parenthesized; it contains all the arguments
  99         to the called function.
 100
 101         They make the documentation (more) unpleasant to read, so if
 102         someone wants to fix this and not break the above, please do.
 103
 104 .#define BFD_SEND(bfd, message, arglist) \
 105 .               ((*((bfd)->xvec->message)) arglist)
 106 .
 107 .#ifdef DEBUG_BFD_SEND
 108 .#undef BFD_SEND
 109 .#define BFD_SEND(bfd, message, arglist) \
 110 .  (((bfd) && (bfd)->xvec && (bfd)->xvec->message) ? \
 111 .    ((*((bfd)->xvec->message)) arglist) : \
 112 .    (bfd_assert (__FILE__,__LINE__), NULL))
 113 .#endif
 114
 115         For operations which index on the BFD format:
 116
 117 .#define BFD_SEND_FMT(bfd, message, arglist) \
 118 .            (((bfd)->xvec->message[(int)((bfd)->format)]) arglist)
 119 .
 120 .#ifdef DEBUG_BFD_SEND
 121 .#undef BFD_SEND_FMT
 122 .#define BFD_SEND_FMT(bfd, message, arglist) \
 123 .  (((bfd) && (bfd)->xvec && (bfd)->xvec->message) ? \
 124 .   (((bfd)->xvec->message[(int)((bfd)->format)]) arglist) : \
 125 .   (bfd_assert (__FILE__,__LINE__), NULL))
 126 .#endif
 127
 128         This is the structure which defines the type of BFD this is.  The
 129         <<xvec>> member of the struct <<bfd>> itself points here.  Each
 130         module that implements access to a different target under BFD,
 131         defines one of these.
 132
 133
 134         FIXME, these names should be rationalised with the names of
 135         the entry points which call them. Too bad we can't have one
 136         macro to define them both!
 137
 138 .enum bfd_flavour {
 139 .  bfd_target_unknown_flavour,
 140 .  bfd_target_aout_flavour,
 141 .  bfd_target_coff_flavour,
 142 .  bfd_target_ecoff_flavour,
 143 .  bfd_target_elf_flavour,
 144 .  bfd_target_ieee_flavour,
 145 .  bfd_target_nlm_flavour,
 146 .  bfd_target_oasys_flavour,
 147 .  bfd_target_tekhex_flavour,
 148 .  bfd_target_srec_flavour,
 149 .  bfd_target_ihex_flavour,
 150 .  bfd_target_som_flavour,
 151 .  bfd_target_os9k_flavour,
 152 .  bfd_target_versados_flavour,
 153 .  bfd_target_msdos_flavour,
 154 .  bfd_target_evax_flavour
 155 .};
 156 .
 157 .enum bfd_endian { BFD_ENDIAN_BIG, BFD_ENDIAN_LITTLE, BFD_ENDIAN_UNKNOWN };
 158 .
 159 .{* Forward declaration.  *}
 160 .typedef struct bfd_link_info _bfd_link_info;
 161 .
 162 .typedef struct bfd_target
 163 .{
 164
 165 Identifies the kind of target, e.g., SunOS4, Ultrix, etc.
 166
 167 .  char *name;
 168
 169 The "flavour" of a back end is a general indication about the contents
 170 of a file.
 171
 172 .  enum bfd_flavour flavour;
 173
 174 The order of bytes within the data area of a file.
 175
 176 .  enum bfd_endian byteorder;
 177
 178 The order of bytes within the header parts of a file.
 179
 180 .  enum bfd_endian header_byteorder;
 181
 182 A mask of all the flags which an executable may have set -
 183 from the set <<BFD_NO_FLAGS>>, <<HAS_RELOC>>, ...<<D_PAGED>>.
 184
 185 .  flagword object_flags;
 186
 187 A mask of all the flags which a section may have set - from
 188 the set <<SEC_NO_FLAGS>>, <<SEC_ALLOC>>, ...<<SET_NEVER_LOAD>>.
 189
 190 .  flagword section_flags;
 191
 192 The character normally found at the front of a symbol
 193 (if any), perhaps `_'.
 194
 195 .  char symbol_leading_char;
 196
 197 The pad character for file names within an archive header.
 198
 199 .  char ar_pad_char;
 200
 201 The maximum number of characters in an archive header.
 202
 203 .  unsigned short ar_max_namelen;
 204
 205 Entries for byte swapping for data. These are different from the other
 206 entry points, since they don't take a BFD asthe first argument.
 207 Certain other handlers could do the same.
 208
 209 .  bfd_vma      (*bfd_getx64) PARAMS ((const bfd_byte *));
 210 .  bfd_signed_vma (*bfd_getx_signed_64) PARAMS ((const bfd_byte *));
 211 .  void         (*bfd_putx64) PARAMS ((bfd_vma, bfd_byte *));
 212 .  bfd_vma      (*bfd_getx32) PARAMS ((const bfd_byte *));
 213 .  bfd_signed_vma (*bfd_getx_signed_32) PARAMS ((const bfd_byte *));
 214 .  void         (*bfd_putx32) PARAMS ((bfd_vma, bfd_byte *));
 215 .  bfd_vma      (*bfd_getx16) PARAMS ((const bfd_byte *));
 216 .  bfd_signed_vma (*bfd_getx_signed_16) PARAMS ((const bfd_byte *));
 217 .  void         (*bfd_putx16) PARAMS ((bfd_vma, bfd_byte *));
 218
 219 Byte swapping for the headers
 220
 221 .  bfd_vma      (*bfd_h_getx64) PARAMS ((const bfd_byte *));
 222 .  bfd_signed_vma (*bfd_h_getx_signed_64) PARAMS ((const bfd_byte *));
 223 .  void         (*bfd_h_putx64) PARAMS ((bfd_vma, bfd_byte *));
 224 .  bfd_vma      (*bfd_h_getx32) PARAMS ((const bfd_byte *));
 225 .  bfd_signed_vma (*bfd_h_getx_signed_32) PARAMS ((const bfd_byte *));
 226 .  void         (*bfd_h_putx32) PARAMS ((bfd_vma, bfd_byte *));
 227 .  bfd_vma      (*bfd_h_getx16) PARAMS ((const bfd_byte *));
 228 .  bfd_signed_vma (*bfd_h_getx_signed_16) PARAMS ((const bfd_byte *));
 229 .  void         (*bfd_h_putx16) PARAMS ((bfd_vma, bfd_byte *));
 230
 231 Format dependent routines: these are vectors of entry points
 232 within the target vector structure, one for each format to check.
 233
 234 Check the format of a file being read.  Return a <<bfd_target *>> or zero.
 235
 236 .  const struct bfd_target *(*_bfd_check_format[bfd_type_end]) PARAMS ((bfd *));
 237
 238 Set the format of a file being written.
 239
 240 .  boolean             (*_bfd_set_format[bfd_type_end]) PARAMS ((bfd *));
 241
 242 Write cached information into a file being written, at <<bfd_close>>.
 243
 244 .  boolean             (*_bfd_write_contents[bfd_type_end]) PARAMS ((bfd *));
 245
 246 The general target vector.
 247
 248 .
 249 .  {* Generic entry points.  *}
 250 .#define BFD_JUMP_TABLE_GENERIC(NAME)\
 251 .CAT(NAME,_close_and_cleanup),\
 252 .CAT(NAME,_bfd_free_cached_info),\
 253 .CAT(NAME,_new_section_hook),\
 254 .CAT(NAME,_get_section_contents),\
 255 .CAT(NAME,_get_section_contents_in_window)
 256 .
 257 .  {* Called when the BFD is being closed to do any necessary cleanup.  *}
 258 .  boolean       (*_close_and_cleanup) PARAMS ((bfd *));
 259 .  {* Ask the BFD to free all cached information.  *}
 260 .  boolean (*_bfd_free_cached_info) PARAMS ((bfd *));
 261 .  {* Called when a new section is created.  *}
 262 .  boolean       (*_new_section_hook) PARAMS ((bfd *, sec_ptr));
 263 .  {* Read the contents of a section.  *}
 264 .  boolean       (*_bfd_get_section_contents) PARAMS ((bfd *, sec_ptr, PTR,
 265 .                                            file_ptr, bfd_size_type));
 266 .  boolean       (*_bfd_get_section_contents_in_window)
 267 .                          PARAMS ((bfd *, sec_ptr, bfd_window *,
 268 .                                   file_ptr, bfd_size_type));
 269 .
 270 .  {* Entry points to copy private data.  *}
 271 .#define BFD_JUMP_TABLE_COPY(NAME)\
 272 .CAT(NAME,_bfd_copy_private_bfd_data),\
 273 .CAT(NAME,_bfd_merge_private_bfd_data),\
 274 .CAT(NAME,_bfd_copy_private_section_data),\
 275 .CAT(NAME,_bfd_copy_private_symbol_data),\
 276 .CAT(NAME,_bfd_set_private_flags),\
 277 .CAT(NAME,_bfd_print_private_bfd_data)\
 278 .  {* Called to copy BFD general private data from one object file
 279 .     to another.  *}
 280 .  boolean       (*_bfd_copy_private_bfd_data) PARAMS ((bfd *, bfd *));
 281 .  {* Called to merge BFD general private data from one object file
 282 .     to a common output file when linking.  *}
 283 .  boolean       (*_bfd_merge_private_bfd_data) PARAMS ((bfd *, bfd *));
 284 .  {* Called to copy BFD private section data from one object file
 285 .     to another.  *}
 286 .  boolean       (*_bfd_copy_private_section_data) PARAMS ((bfd *, sec_ptr,
 287 .                                                       bfd *, sec_ptr));
 288 .  {* Called to copy BFD private symbol data from one symbol
 289 .     to another.  *}
 290 .  boolean       (*_bfd_copy_private_symbol_data) PARAMS ((bfd *, asymbol *,
 291 .                                                          bfd *, asymbol *));
 292 .  {* Called to set private backend flags *}
 293 .  boolean       (*_bfd_set_private_flags) PARAMS ((bfd *, flagword));
 294 .
 295 .  {* Called to print private BFD data *}
 296 .  boolean       (*_bfd_print_private_bfd_data) PARAMS ((bfd *, PTR));
 297 .
 298 .  {* Core file entry points.  *}
 299 .#define BFD_JUMP_TABLE_CORE(NAME)\
 300 .CAT(NAME,_core_file_failing_command),\
 301 .CAT(NAME,_core_file_failing_signal),\
 302 .CAT(NAME,_core_file_matches_executable_p)
 303 .  char *   (*_core_file_failing_command) PARAMS ((bfd *));
 304 .  int      (*_core_file_failing_signal) PARAMS ((bfd *));
 305 .  boolean  (*_core_file_matches_executable_p) PARAMS ((bfd *, bfd *));
 306 .
 307 .  {* Archive entry points.  *}
 308 .#define BFD_JUMP_TABLE_ARCHIVE(NAME)\
 309 .CAT(NAME,_slurp_armap),\
 310 .CAT(NAME,_slurp_extended_name_table),\
 311 .CAT(NAME,_construct_extended_name_table),\
 312 .CAT(NAME,_truncate_arname),\
 313 .CAT(NAME,_write_armap),\
 314 .CAT(NAME,_read_ar_hdr),\
 315 .CAT(NAME,_openr_next_archived_file),\
 316 .CAT(NAME,_get_elt_at_index),\
 317 .CAT(NAME,_generic_stat_arch_elt),\
 318 .CAT(NAME,_update_armap_timestamp)
 319 .  boolean  (*_bfd_slurp_armap) PARAMS ((bfd *));
 320 .  boolean  (*_bfd_slurp_extended_name_table) PARAMS ((bfd *));
 321 .  boolean  (*_bfd_construct_extended_name_table)
 322 .             PARAMS ((bfd *, char **, bfd_size_type *, const char **));
 323 .  void     (*_bfd_truncate_arname) PARAMS ((bfd *, CONST char *, char *));
 324 .  boolean  (*write_armap) PARAMS ((bfd *arch,
 325 .                              unsigned int elength,
 326 .                              struct orl *map,
 327 .                              unsigned int orl_count,
 328 .                              int stridx));
 329 .  PTR (*_bfd_read_ar_hdr_fn) PARAMS ((bfd *));
 330 .  bfd *    (*openr_next_archived_file) PARAMS ((bfd *arch, bfd *prev));
 331 .#define bfd_get_elt_at_index(b,i) BFD_SEND(b, _bfd_get_elt_at_index, (b,i))
 332 .  bfd *    (*_bfd_get_elt_at_index) PARAMS ((bfd *, symindex));
 333 .  int      (*_bfd_stat_arch_elt) PARAMS ((bfd *, struct stat *));
 334 .  boolean  (*_bfd_update_armap_timestamp) PARAMS ((bfd *));
 335 .
 336 .  {* Entry points used for symbols.  *}
 337 .#define BFD_JUMP_TABLE_SYMBOLS(NAME)\
 338 .CAT(NAME,_get_symtab_upper_bound),\
 339 .CAT(NAME,_get_symtab),\
 340 .CAT(NAME,_make_empty_symbol),\
 341 .CAT(NAME,_print_symbol),\
 342 .CAT(NAME,_get_symbol_info),\
 343 .CAT(NAME,_bfd_is_local_label_name),\
 344 .CAT(NAME,_get_lineno),\
 345 .CAT(NAME,_find_nearest_line),\
 346 .CAT(NAME,_bfd_make_debug_symbol),\
 347 .CAT(NAME,_read_minisymbols),\
 348 .CAT(NAME,_minisymbol_to_symbol)
 349 .  long  (*_bfd_get_symtab_upper_bound) PARAMS ((bfd *));
 350 .  long  (*_bfd_canonicalize_symtab) PARAMS ((bfd *,
 351 .                                             struct symbol_cache_entry **));
 352 .  struct symbol_cache_entry  *
 353 .                (*_bfd_make_empty_symbol) PARAMS ((bfd *));
 354 .  void          (*_bfd_print_symbol) PARAMS ((bfd *, PTR,
 355 .                                      struct symbol_cache_entry *,
 356 .                                      bfd_print_symbol_type));
 357 .#define bfd_print_symbol(b,p,s,e) BFD_SEND(b, _bfd_print_symbol, (b,p,s,e))
 358 .  void          (*_bfd_get_symbol_info) PARAMS ((bfd *,
 359 .                                      struct symbol_cache_entry *,
 360 .                                      symbol_info *));
 361 .#define bfd_get_symbol_info(b,p,e) BFD_SEND(b, _bfd_get_symbol_info, (b,p,e))
 362 .  boolean       (*_bfd_is_local_label_name) PARAMS ((bfd *, const char *));
 363 .
 364 .  alent *    (*_get_lineno) PARAMS ((bfd *, struct symbol_cache_entry *));
 365 .  boolean    (*_bfd_find_nearest_line) PARAMS ((bfd *abfd,
 366 .                    struct sec *section, struct symbol_cache_entry **symbols,
 367 .                    bfd_vma offset, CONST char **file, CONST char **func,
 368 .                    unsigned int *line));
 369 . {* Back-door to allow format-aware applications to create debug symbols
 370 .    while using BFD for everything else.  Currently used by the assembler
 371 .    when creating COFF files.  *}
 372 .  asymbol *  (*_bfd_make_debug_symbol) PARAMS ((
 373 .       bfd *abfd,
 374 .       void *ptr,
 375 .       unsigned long size));
 376 .#define bfd_read_minisymbols(b, d, m, s) \
 377 .  BFD_SEND (b, _read_minisymbols, (b, d, m, s))
 378 .  long  (*_read_minisymbols) PARAMS ((bfd *, boolean, PTR *,
 379 .                                      unsigned int *));
 380 .#define bfd_minisymbol_to_symbol(b, d, m, f) \
 381 .  BFD_SEND (b, _minisymbol_to_symbol, (b, d, m, f))
 382 .  asymbol *(*_minisymbol_to_symbol) PARAMS ((bfd *, boolean, const PTR,
 383 .                                             asymbol *));
 384 .
 385 .  {* Routines for relocs.  *}
 386 .#define BFD_JUMP_TABLE_RELOCS(NAME)\
 387 .CAT(NAME,_get_reloc_upper_bound),\
 388 .CAT(NAME,_canonicalize_reloc),\
 389 .CAT(NAME,_bfd_reloc_type_lookup)
 390 .  long  (*_get_reloc_upper_bound) PARAMS ((bfd *, sec_ptr));
 391 .  long  (*_bfd_canonicalize_reloc) PARAMS ((bfd *, sec_ptr, arelent **,
 392 .                                            struct symbol_cache_entry **));
 393 .  {* See documentation on reloc types.  *}
 394 .  reloc_howto_type *
 395 .       (*reloc_type_lookup) PARAMS ((bfd *abfd,
 396 .                                     bfd_reloc_code_real_type code));
 397 .
 398 .  {* Routines used when writing an object file.  *}
 399 .#define BFD_JUMP_TABLE_WRITE(NAME)\
 400 .CAT(NAME,_set_arch_mach),\
 401 .CAT(NAME,_set_section_contents)
 402 .  boolean    (*_bfd_set_arch_mach) PARAMS ((bfd *, enum bfd_architecture,
 403 .                    unsigned long));
 404 .  boolean       (*_bfd_set_section_contents) PARAMS ((bfd *, sec_ptr, PTR,
 405 .                                            file_ptr, bfd_size_type));
 406 .
 407 .  {* Routines used by the linker.  *}
 408 .#define BFD_JUMP_TABLE_LINK(NAME)\
 409 .CAT(NAME,_sizeof_headers),\
 410 .CAT(NAME,_bfd_get_relocated_section_contents),\
 411 .CAT(NAME,_bfd_relax_section),\
 412 .CAT(NAME,_bfd_link_hash_table_create),\
 413 .CAT(NAME,_bfd_link_add_symbols),\
 414 .CAT(NAME,_bfd_final_link),\
 415 .CAT(NAME,_bfd_link_split_section)
 416 .  int        (*_bfd_sizeof_headers) PARAMS ((bfd *, boolean));
 417 .  bfd_byte * (*_bfd_get_relocated_section_contents) PARAMS ((bfd *,
 418 .                    struct bfd_link_info *, struct bfd_link_order *,
 419 .                    bfd_byte *data, boolean relocateable,
 420 .                    struct symbol_cache_entry **));
 421 .
 422 .  boolean    (*_bfd_relax_section) PARAMS ((bfd *, struct sec *,
 423 .                    struct bfd_link_info *, boolean *again));
 424 .
 425 .  {* Create a hash table for the linker.  Different backends store
 426 .     different information in this table.  *}
 427 .  struct bfd_link_hash_table *(*_bfd_link_hash_table_create) PARAMS ((bfd *));
 428 .
 429 .  {* Add symbols from this object file into the hash table.  *}
 430 .  boolean (*_bfd_link_add_symbols) PARAMS ((bfd *, struct bfd_link_info *));
 431 .
 432 .  {* Do a link based on the link_order structures attached to each
 433 .     section of the BFD.  *}
 434 .  boolean (*_bfd_final_link) PARAMS ((bfd *, struct bfd_link_info *));
 435 .
 436 .  {* Should this section be split up into smaller pieces during linking.  *}
 437 .  boolean (*_bfd_link_split_section) PARAMS ((bfd *, struct sec *));
 438 .
 439 . {* Routines to handle dynamic symbols and relocs.  *}
 440 .#define BFD_JUMP_TABLE_DYNAMIC(NAME)\
 441 .CAT(NAME,_get_dynamic_symtab_upper_bound),\
 442 .CAT(NAME,_canonicalize_dynamic_symtab),\
 443 .CAT(NAME,_get_dynamic_reloc_upper_bound),\
 444 .CAT(NAME,_canonicalize_dynamic_reloc)
 445 .  {* Get the amount of memory required to hold the dynamic symbols. *}
 446 .  long  (*_bfd_get_dynamic_symtab_upper_bound) PARAMS ((bfd *));
 447 .  {* Read in the dynamic symbols.  *}
 448 .  long  (*_bfd_canonicalize_dynamic_symtab)
 449 .    PARAMS ((bfd *, struct symbol_cache_entry **));
 450 .  {* Get the amount of memory required to hold the dynamic relocs.  *}
 451 .  long  (*_bfd_get_dynamic_reloc_upper_bound) PARAMS ((bfd *));
 452 .  {* Read in the dynamic relocs.  *}
 453 .  long  (*_bfd_canonicalize_dynamic_reloc)
 454 .    PARAMS ((bfd *, arelent **, struct symbol_cache_entry **));
 455 .
 456
 457 Data for use by back-end routines, which isn't generic enough to belong
 458 in this structure.
 459
 460 . PTR backend_data;
 461 .} bfd_target;
 462
 463 */
 464
 465 /* All known xvecs (even those that don't compile on all systems).
 466    Alphabetized for easy reference.
 467    They are listed a second time below, since
 468    we can't intermix extern's and initializers.  */
 469 extern const bfd_target a29kcoff_big_vec;
 470 extern const bfd_target a_out_adobe_vec;
 471 extern const bfd_target aout_arm_big_vec;
 472 extern const bfd_target aout_arm_little_vec;
 473 extern const bfd_target aout_mips_big_vec;
 474 extern const bfd_target aout_mips_little_vec;
 475 extern const bfd_target aout0_big_vec;
 476 extern const bfd_target apollocoff_vec;
 477 extern const bfd_target armcoff_little_vec;
 478 extern const bfd_target armcoff_big_vec;
 479 extern const bfd_target armpe_little_vec;
 480 extern const bfd_target armpe_big_vec;
 481 extern const bfd_target armpei_little_vec;
 482 extern const bfd_target armpei_big_vec;
 483 extern const bfd_target b_out_vec_big_host;
 484 extern const bfd_target b_out_vec_little_host;
 485 extern const bfd_target bfd_elf64_alpha_vec;
 486 extern const bfd_target bfd_elf32_bigarc_vec;
 487 extern const bfd_target bfd_elf32_littlearc_vec;
 488 extern const bfd_target bfd_elf32_big_generic_vec;
 489 extern const bfd_target bfd_elf32_bigmips_vec;
 490 extern const bfd_target bfd_elf64_bigmips_vec;
 491 extern const bfd_target bfd_elf32_d10v_vec;
 492 /* start-sanitize-d30v */
 493 extern const bfd_target bfd_elf32_d30v_vec;
 494 /* end-sanitize-d30v */
 495 extern const bfd_target bfd_elf32_hppa_vec;
 496 extern const bfd_target bfd_elf32_i386_vec;
 497 extern const bfd_target bfd_elf32_i860_vec;
 498 extern const bfd_target bfd_elf32_little_generic_vec;
 499 extern const bfd_target bfd_elf32_littlemips_vec;
 500 extern const bfd_target bfd_elf64_littlemips_vec;
 501 extern const bfd_target bfd_elf32_m32r_vec;
 502 extern const bfd_target bfd_elf32_m68k_vec;
 503 extern const bfd_target bfd_elf32_m88k_vec;
 504 extern const bfd_target bfd_elf32_mn10200_vec;
 505 extern const bfd_target bfd_elf32_mn10300_vec;
 506 extern const bfd_target bfd_elf32_powerpc_vec;
 507 extern const bfd_target bfd_elf32_powerpcle_vec;
 508 extern const bfd_target bfd_elf32_sh_vec;
 509 extern const bfd_target bfd_elf32_shl_vec;
 510 extern const bfd_target bfd_elf32_sparc_vec;
 511 extern const bfd_target bfd_elf32_v850_vec;
 512 extern const bfd_target bfd_elf64_big_generic_vec;
 513 extern const bfd_target bfd_elf64_little_generic_vec;
 514 extern const bfd_target bfd_elf64_sparc_vec;
 515 extern const bfd_target demo_64_vec;
 516 extern const bfd_target ecoff_big_vec;
 517 extern const bfd_target ecoff_little_vec;
 518 extern const bfd_target ecoff_biglittle_vec;
 519 extern const bfd_target ecoffalpha_little_vec;
 520 extern const bfd_target evax_alpha_vec;
 521 extern const bfd_target h8300coff_vec;
 522 extern const bfd_target h8500coff_vec;
 523 extern const bfd_target host_aout_vec;
 524 extern const bfd_target hp300bsd_vec;
 525 extern const bfd_target hp300hpux_vec;
 526 extern const bfd_target som_vec;
 527 extern const bfd_target i386aout_vec;
 528 extern const bfd_target i386bsd_vec;
 529 extern const bfd_target i386dynix_vec;
 530 extern const bfd_target i386freebsd_vec;
 531 extern const bfd_target i386os9k_vec;
 532 extern const bfd_target i386coff_vec;
 533 extern const bfd_target bfd_powerpc_pe_vec;
 534 extern const bfd_target bfd_powerpcle_pe_vec;
 535 extern const bfd_target bfd_powerpc_pei_vec;
 536 extern const bfd_target bfd_powerpcle_pei_vec;
 537 extern const bfd_target i386pe_vec;
 538 extern const bfd_target i386pei_vec;
 539 extern const bfd_target go32coff_vec;
 540 extern const bfd_target go32stubbedcoff_vec;
 541 extern const bfd_target i386linux_vec;
 542 extern const bfd_target i386lynx_aout_vec;
 543 extern const bfd_target i386lynx_coff_vec;
 544 extern const bfd_target i386mach3_vec;
 545 extern const bfd_target i386msdos_vec;
 546 extern const bfd_target i386netbsd_vec;
 547 extern const bfd_target i860coff_vec;
 548 extern const bfd_target icoff_big_vec;
 549 extern const bfd_target icoff_little_vec;
 550 extern const bfd_target ieee_vec;
 551 extern const bfd_target m68kaux_coff_vec;
 552 extern const bfd_target m68kcoff_vec;
 553 extern const bfd_target m68kcoffun_vec;
 554 extern const bfd_target m68klinux_vec;
 555 extern const bfd_target m68klynx_aout_vec;
 556 extern const bfd_target m68klynx_coff_vec;
 557 extern const bfd_target m68knetbsd_vec;
 558 extern const bfd_target m68ksysvcoff_vec;
 559 extern const bfd_target m68k4knetbsd_vec;
 560 extern const bfd_target m88kbcs_vec;
 561 extern const bfd_target m88kmach3_vec;
 562 extern const bfd_target newsos3_vec;
 563 extern const bfd_target nlm32_i386_vec;
 564 extern const bfd_target nlm32_sparc_vec;
 565 extern const bfd_target nlm32_alpha_vec;
 566 extern const bfd_target nlm32_powerpc_vec;
 567 extern const bfd_target pc532netbsd_vec;
 568 extern const bfd_target oasys_vec;
 569 extern const bfd_target pc532machaout_vec;
 570 extern const bfd_target ppcboot_vec;
 571 extern const bfd_target riscix_vec;
 572 extern const bfd_target pmac_xcoff_vec;
 573 extern const bfd_target rs6000coff_vec;
 574 extern const bfd_target shcoff_vec;
 575 extern const bfd_target shlcoff_vec;
 576 extern const bfd_target shcoff_small_vec;
 577 extern const bfd_target shlcoff_small_vec;
 578 extern const bfd_target sparcle_aout_vec;
 579 extern const bfd_target sparclinux_vec;
 580 extern const bfd_target sparclynx_aout_vec;
 581 extern const bfd_target sparclynx_coff_vec;
 582 extern const bfd_target sparcnetbsd_vec;
 583 extern const bfd_target sparccoff_vec;
 584 extern const bfd_target sunos_big_vec;
 585 extern const bfd_target tekhex_vec;
 586 /* start-sanitize-tic80 */
 587 extern const bfd_target tic80coff_vec;
 588 /* end-sanitize-tic80 */
 589 extern const bfd_target versados_vec;
 590 extern const bfd_target we32kcoff_vec;
 591 extern const bfd_target w65_vec;
 592 extern const bfd_target z8kcoff_vec;
 593
 594 /* srec is always included.  */
 595 extern const bfd_target srec_vec;
 596 extern const bfd_target symbolsrec_vec;
 597
 598 /* binary is always included.  */
 599 extern const bfd_target binary_vec;
 600
 601 /* ihex is always included.  */
 602 extern const bfd_target ihex_vec;
 603
 604 /* All of the xvecs for core files.  */
 605 extern const bfd_target aix386_core_vec;
 606 extern const bfd_target cisco_core_vec;
 607 extern const bfd_target hpux_core_vec;
 608 extern const bfd_target hppabsd_core_vec;
 609 extern const bfd_target irix_core_vec;
 610 extern const bfd_target netbsd_core_vec;
 611 extern const bfd_target osf_core_vec;
 612 extern const bfd_target sco_core_vec;
 613 extern const bfd_target trad_core_vec;
 614 extern const bfd_target ptrace_core_vec;
 615
 616 const bfd_target * const bfd_target_vector[] = {
 617
 618 #ifdef SELECT_VECS
 619
 620         SELECT_VECS,
 621
 622 #else /* not SELECT_VECS */
 623
 624 #ifdef DEFAULT_VECTOR
 625         &DEFAULT_VECTOR,
 626 #endif
 627         /* This list is alphabetized to make it easy to compare
 628            with other vector lists -- the decls above and
 629            the case statement in configure.in.
 630            Vectors that don't compile on all systems, or aren't finished,
 631            should have an entry here with #if 0 around it, to show that
 632            it wasn't omitted by mistake.  */
 633         &a29kcoff_big_vec,
 634         &a_out_adobe_vec,
 635 #if 0                           /* No one seems to use this.  */
 636         &aout_mips_big_vec,
 637 #endif
 638         &aout_mips_little_vec,
 639         &b_out_vec_big_host,
 640         &b_out_vec_little_host,
 641
 642         /* This, and other vectors, may not be used in any *.mt configuration.
 643            But that does not mean they are unnecessary.  If configured with
 644            --enable-targets=all, objdump or gdb should be able to examine
 645            the file even if we don't recognize the machine type.  */
 646         &bfd_elf32_big_generic_vec,
 647 #ifdef BFD64
 648         &bfd_elf64_alpha_vec,
 649 #endif
 650         &bfd_elf32_bigarc_vec,
 651         &bfd_elf32_bigmips_vec,
 652 #ifdef BFD64
 653         &bfd_elf64_bigmips_vec,
 654 #endif
 655         &bfd_elf32_d10v_vec,
 656 /* start-sanitize-d30v */
 657         &bfd_elf32_d30v_vec,
 658 /* end-sanitize-d30v */
 659         &bfd_elf32_hppa_vec,
 660         &bfd_elf32_i386_vec,
 661         &bfd_elf32_i860_vec,
 662         &bfd_elf32_little_generic_vec,
 663         &bfd_elf32_littlearc_vec,
 664         &bfd_elf32_littlemips_vec,
 665 #ifdef BFD64
 666         &bfd_elf64_littlemips_vec,
 667 #endif
 668         &bfd_elf32_m32r_vec,
 669         &bfd_elf32_mn10200_vec,
 670         &bfd_elf32_mn10300_vec,
 671         &bfd_elf32_m68k_vec,
 672         &bfd_elf32_m88k_vec,
 673         &bfd_elf32_sparc_vec,
 674         &bfd_elf32_powerpc_vec,
 675         &bfd_elf32_v850_vec,
 676 #ifdef BFD64                    /* No one seems to use this.  */
 677         &bfd_elf64_big_generic_vec,
 678         &bfd_elf64_little_generic_vec,
 679 #endif
 680 #if 0
 681         &bfd_elf64_sparc_vec,
 682 #endif
 683         /* We don't include cisco_core_vec.  Although it has a magic number,
 684            the magic number isn't at the beginning of the file, and thus
 685            might spuriously match other kinds of files.  */
 686 #ifdef BFD64
 687         &demo_64_vec,   /* Only compiled if host has long-long support */
 688 #endif
 689         &ecoff_big_vec,
 690         &ecoff_little_vec,
 691         &ecoff_biglittle_vec,
 692 #ifdef BFD64
 693         &ecoffalpha_little_vec,
 694         &evax_alpha_vec,
 695 #endif
 696         &h8300coff_vec,
 697         &h8500coff_vec,
 698 #if 0
 699         /* Since a.out files lack decent magic numbers, no way to recognize
 700            which kind of a.out file it is.  */
 701         &host_aout_vec,
 702 #endif
 703 #if 0                           /* Clashes with sunos_big_vec magic no.  */
 704         &hp300bsd_vec,
 705 #endif
 706         &hp300hpux_vec,
 707 #if defined (HOST_HPPAHPUX) || defined (HOST_HPPABSD) || defined (HOST_HPPAOSF)
 708         &som_vec,
 709 #endif
 710         &i386aout_vec,
 711         &i386bsd_vec,
 712         &i386coff_vec,
 713         &i386freebsd_vec,
 714         &i860coff_vec,
 715         &bfd_powerpc_pe_vec,
 716         &bfd_powerpcle_pe_vec,
 717         &bfd_powerpc_pei_vec,
 718         &bfd_powerpcle_pei_vec,
 719         &go32coff_vec,
 720         &go32stubbedcoff_vec,
 721 #if 0
 722         /* Since a.out files lack decent magic numbers, no way to recognize
 723            which kind of a.out file it is.  */
 724         &i386linux_vec,
 725 #endif
 726         &i386lynx_aout_vec,
 727         &i386lynx_coff_vec,
 728 #if 0
 729         /* No distinguishing features for Mach 3 executables.  */
 730         &i386mach3_vec,
 731 #endif
 732         &i386msdos_vec,
 733         &i386netbsd_vec,
 734         &i386os9k_vec,
 735         &i386pe_vec,
 736         &i386pei_vec,
 737         &armcoff_little_vec,
 738         &armcoff_big_vec,
 739         &armpe_little_vec,
 740         &armpe_big_vec,
 741         &armpei_little_vec,
 742         &armpei_big_vec,
 743         &icoff_big_vec,
 744         &icoff_little_vec,
 745         &ieee_vec,
 746         &m68kcoff_vec,
 747         &m68kcoffun_vec,
 748 #if 0
 749         /* Since a.out files lack decent magic numbers, no way to recognize
 750            which kind of a.out file it is.  */
 751         &m68klinux_vec,
 752 #endif
 753         &m68klynx_aout_vec,
 754         &m68klynx_coff_vec,
 755         &m68knetbsd_vec,
 756         &m68ksysvcoff_vec,
 757         &m88kbcs_vec,
 758         &m88kmach3_vec,
 759         &newsos3_vec,
 760         &nlm32_i386_vec,
 761         &nlm32_sparc_vec,
 762 #ifdef BFD64
 763         &nlm32_alpha_vec,
 764 #endif
 765         &pc532netbsd_vec,
 766 #if 0
 767         /* We have no oasys tools anymore, so we can't test any of this
 768            anymore. If you want to test the stuff yourself, go ahead...
 769            steve@cygnus.com
 770            Worse, since there is no magic number for archives, there
 771            can be annoying target mis-matches.  */
 772         &oasys_vec,
 773 #endif
 774         &pc532machaout_vec,
 775 #if 0
 776         /* We have no way of distinguishing these from other a.out variants */
 777         &aout_arm_big_vec,
 778         &aout_arm_little_vec,
 779         &riscix_vec,
 780 #endif
 781 #if 0
 782         /* This has the same magic number as RS/6000. */
 783         &pmac_xcoff_vec,
 784 #endif
 785         &rs6000coff_vec,
 786         &ppcboot_vec,
 787         &shcoff_vec,
 788         &shlcoff_vec,
 789         &shcoff_small_vec,
 790         &shlcoff_small_vec,
 791         &sparcle_aout_vec,
 792         &sparclinux_vec,
 793         &sparclynx_aout_vec,
 794         &sparclynx_coff_vec,
 795         &sparcnetbsd_vec,
 796         &sunos_big_vec,
 797         &aout0_big_vec,
 798         &tekhex_vec,
 799 /* start-sanitize-tic80 */
 800         &tic80coff_vec,
 801 /* end-sanitize-tic80 */
 802         &we32kcoff_vec,
 803         &versados_vec,
 804         &z8kcoff_vec,
 805
 806 #endif /* not SELECT_VECS */
 807
 808 /* Always support S-records, for convenience.  */
 809         &srec_vec,
 810         &symbolsrec_vec,
 811 /* And tekhex */
 812         &tekhex_vec,
 813 /* Likewise for binary output.  */
 814         &binary_vec,
 815 /* Likewise for ihex.  */
 816         &ihex_vec,
 817
 818 /* Add any required traditional-core-file-handler.  */
 819
 820 #ifdef AIX386_CORE
 821         &aix386_core_vec,
 822 #endif
 823 #ifdef HPUX_CORE
 824         &hpux_core_vec,
 825 #endif
 826 #ifdef HPPABSD_CORE
 827         &hppabsd_core_vec,
 828 #endif
 829 #ifdef IRIX_CORE
 830         &irix_core_vec,
 831 #endif
 832 #ifdef OSF_CORE
 833         &osf_core_vec,
 834 #endif
 835 #ifdef  TRAD_CORE
 836         &trad_core_vec,
 837 #endif
 838
 839 #ifdef  PTRACE_CORE
 840         &ptrace_core_vec,
 841 #endif
 842
 843         NULL /* end of list marker */
 844 };
 845
 846 /* bfd_default_vector[0] contains either the address of the default vector,
 847    if there is one, or zero if there isn't.  */
 848
 849 const bfd_target *bfd_default_vector[] = {
 850 #ifdef DEFAULT_VECTOR
 851         &DEFAULT_VECTOR,
 852 #endif
 853         NULL
 854 };
 855
 856 /* When there is an ambiguous match, bfd_check_format_matches puts the
 857    names of the matching targets in an array.  This variable is the maximum
 858    number of entries that the array could possibly need.  */
 859 const size_t _bfd_target_vector_entries = sizeof(bfd_target_vector)/sizeof(*bfd_target_vector);
 860 \f
 861 /* This array maps configuration triplets onto BFD vectors.  */
 862
 863 struct targmatch
 864 {
 865   /* The configuration triplet.  */
 866   const char *triplet;
 867   /* The BFD vector.  If this is NULL, then the vector is found by
 868      searching forward for the next structure with a non NULL vector
 869      field.  */
 870   const bfd_target *vector;
 871 };
 872
 873 /* targmatch.h is built by Makefile out of config.bfd.  */
 874 static const struct targmatch bfd_target_match[] = {
 875 #include "targmatch.h"
 876   { NULL, NULL }
 877 };
 878
 879 static const bfd_target *find_target PARAMS ((const char *));
 880
 881 /* Find a target vector, given a name or configuration triplet.  */
 882
 883 static const bfd_target *
 884 find_target (name)
 885      const char *name;
 886 {
 887   const bfd_target * const *target;
 888   const struct targmatch *match;
 889
 890   for (target = &bfd_target_vector[0]; *target != NULL; target++)
 891     if (strcmp (name, (*target)->name) == 0)
 892       return *target;
 893
 894   /* If we couldn't match on the exact name, try matching on the
 895      configuration triplet.  FIXME: We should run the triplet through
 896      config.sub first, but that is hard.  */
 897   for (match = &bfd_target_match[0]; match->triplet != NULL; match++)
 898     {
 899       if (fnmatch (match->triplet, name, 0) == 0)
 900         {
 901           while (match->vector == NULL)
 902             ++match;
 903           return match->vector;
 904           break;
 905         }
 906     }
 907
 908   bfd_set_error (bfd_error_invalid_target);
 909   return NULL;
 910 }
 911
 912 /*
 913 FUNCTION
 914         bfd_set_default_target
 915
 916 SYNOPSIS
 917         boolean bfd_set_default_target (const char *name);
 918
 919 DESCRIPTION
 920         Set the default target vector to use when recognizing a BFD.
 921         This takes the name of the target, which may be a BFD target
 922         name or a configuration triplet.
 923 */
 924
 925 boolean
 926 bfd_set_default_target (name)
 927      const char *name;
 928 {
 929   const bfd_target *target;
 930
 931   if (bfd_default_vector[0] != NULL
 932       && strcmp (name, bfd_default_vector[0]->name) == 0)
 933     return true;
 934
 935   target = find_target (name);
 936   if (target == NULL)
 937     return false;
 938
 939   bfd_default_vector[0] = target;
 940   return true;
 941 }
 942
 943 /*
 944 FUNCTION
 945         bfd_find_target
 946
 947 SYNOPSIS
 948         const bfd_target *bfd_find_target(CONST char *target_name, bfd *abfd);
 949
 950 DESCRIPTION
 951         Return a pointer to the transfer vector for the object target
 952         named @var{target_name}.  If @var{target_name} is <<NULL>>, choose the
 953         one in the environment variable <<GNUTARGET>>; if that is null or not
 954         defined, then choose the first entry in the target list.
 955         Passing in the string "default" or setting the environment
 956         variable to "default" will cause the first entry in the target
 957         list to be returned, and "target_defaulted" will be set in the
 958         BFD.  This causes <<bfd_check_format>> to loop over all the
 959         targets to find the one that matches the file being read.
 960 */
 961
 962 const bfd_target *
 963 bfd_find_target (target_name, abfd)
 964      const char *target_name;
 965      bfd *abfd;
 966 {
 967   const char *targname;
 968   const bfd_target *target;
 969
 970   if (target_name != NULL)
 971     targname = target_name;
 972   else
 973     targname = getenv ("GNUTARGET");
 974
 975   /* This is safe; the vector cannot be null */
 976   if (targname == NULL || strcmp (targname, "default") == 0)
 977     {
 978       abfd->target_defaulted = true;
 979       if (bfd_default_vector[0] != NULL)
 980         abfd->xvec = bfd_default_vector[0];
 981       else
 982         abfd->xvec = bfd_target_vector[0];
 983       return abfd->xvec;
 984     }
 985
 986   abfd->target_defaulted = false;
 987
 988   target = find_target (targname);
 989   if (target == NULL)
 990     return NULL;
 991
 992   abfd->xvec = target;
 993   return target;
 994 }
 995
 996 /*
 997 FUNCTION
 998         bfd_target_list
 999
1000 SYNOPSIS
1001         const char **bfd_target_list(void);
1002
1003 DESCRIPTION
1004         Return a freshly malloced NULL-terminated
1005         vector of the names of all the valid BFD targets. Do not
1006         modify the names.
1007
1008 */
1009
1010 const char **
1011 bfd_target_list ()
1012 {
1013   int vec_length= 0;
1014 #if defined (HOST_HPPAHPUX) && ! defined (__STDC__)
1015   /* The native compiler on the HP9000/700 has a bug which causes it
1016      to loop endlessly when compiling this file.  This avoids it.  */
1017   volatile
1018 #endif
1019     const bfd_target * const *target;
1020   CONST  char **name_list, **name_ptr;
1021
1022   for (target = &bfd_target_vector[0]; *target != NULL; target++)
1023     vec_length++;
1024
1025   name_ptr = name_list = (CONST char **)
1026     bfd_zmalloc ((vec_length + 1) * sizeof (char **));
1027
1028   if (name_list == NULL)
1029     return NULL;
1030
1031   for (target = &bfd_target_vector[0]; *target != NULL; target++)
1032     *(name_ptr++) = (*target)->name;
1033
1034   return name_list;
1035 }