bfd/targets.c

   1 /* Generic target-file-type support for the BFD library.
   2    Copyright 1990, 91, 92, 93, 94, 1995 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 #include "bfd.h"
  22 #include "sysdep.h"
  23 #include "libbfd.h"
  24
  25 /*
  26 SECTION
  27         Targets
  28
  29 DESCRIPTION
  30         Each port of BFD to a different machine requries the creation
  31         of a target back end. All the back end provides to the root
  32         part of BFD is a structure containing pointers to functions
  33         which perform certain low level operations on files. BFD
  34         translates the applications's requests through a pointer into
  35         calls to the back end routines.
  36
  37         When a file is opened with <<bfd_openr>>, its format and
  38         target are unknown. BFD uses various mechanisms to determine
  39         how to interpret the file. The operations performed are:
  40
  41         o Create a BFD by calling the internal routine
  42         <<_bfd_new_bfd>>, then call <<bfd_find_target>> with the
  43         target string supplied to <<bfd_openr>> and the new BFD pointer.
  44
  45         o If a null target string was provided to <<bfd_find_target>>,
  46         look up the environment variable <<GNUTARGET>> and use
  47         that as the target string.
  48
  49         o If the target string is still <<NULL>>, or the target string is
  50         <<default>>, then use the first item in the target vector
  51         as the target type, and set <<target_defaulted>> in the BFD to
  52         cause <<bfd_check_format>> to loop through all the targets.
  53         @xref{bfd_target}.  @xref{Formats}.
  54
  55         o Otherwise, inspect the elements in the target vector
  56         one by one, until a match on target name is found. When found,
  57         use it.
  58
  59         o Otherwise return the error <<bfd_error_invalid_target>> to
  60         <<bfd_openr>>.
  61
  62         o <<bfd_openr>> attempts to open the file using
  63         <<bfd_open_file>>, and returns the BFD.
  64
  65         Once the BFD has been opened and the target selected, the file
  66         format may be determined. This is done by calling
  67         <<bfd_check_format>> on the BFD with a suggested format.
  68         If <<target_defaulted>> has been set, each possible target
  69         type is tried to see if it recognizes the specified format.
  70         <<bfd_check_format>> returns <<true>> when the caller guesses right.
  71 @menu
  72 @* bfd_target::
  73 @end menu
  74 */
  75
  76
  77 /*
  78
  79 INODE
  80         bfd_target,  , Targets, Targets
  81 DOCDD
  82 SUBSECTION
  83         bfd_target
  84
  85 DESCRIPTION
  86         This structure contains everything that BFD knows about a
  87         target. It includes things like its byte order, name, and which
  88         routines to call to do various operations.
  89
  90         Every BFD points to a target structure with its <<xvec>>
  91         member.
  92
  93         The macros below are used to dispatch to functions through the
  94         <<bfd_target>> vector. They are used in a number of macros further
  95         down in @file{bfd.h}, and are also used when calling various
  96         routines by hand inside the BFD implementation.  The @var{arglist}
  97         argument must be parenthesized; it contains all the arguments
  98         to the called function.
  99
 100         They make the documentation (more) unpleasant to read, so if
 101         someone wants to fix this and not break the above, please do.
 102
 103 .#define BFD_SEND(bfd, message, arglist) \
 104 .               ((*((bfd)->xvec->message)) arglist)
 105 .
 106 .#ifdef DEBUG_BFD_SEND
 107 .#undef BFD_SEND
 108 .#define BFD_SEND(bfd, message, arglist) \
 109 .  (((bfd) && (bfd)->xvec && (bfd)->xvec->message) ? \
 110 .    ((*((bfd)->xvec->message)) arglist) : \
 111 .    (bfd_assert (__FILE__,__LINE__), NULL))
 112 .#endif
 113
 114         For operations which index on the BFD format:
 115
 116 .#define BFD_SEND_FMT(bfd, message, arglist) \
 117 .            (((bfd)->xvec->message[(int)((bfd)->format)]) arglist)
 118 .
 119 .#ifdef DEBUG_BFD_SEND
 120 .#undef BFD_SEND_FMT
 121 .#define BFD_SEND_FMT(bfd, message, arglist) \
 122 .  (((bfd) && (bfd)->xvec && (bfd)->xvec->message) ? \
 123 .   (((bfd)->xvec->message[(int)((bfd)->format)]) arglist) : \
 124 .   (bfd_assert (__FILE__,__LINE__), NULL))
 125 .#endif
 126
 127         This is the structure which defines the type of BFD this is.  The
 128         <<xvec>> member of the struct <<bfd>> itself points here.  Each
 129         module that implements access to a different target under BFD,
 130         defines one of these.
 131
 132
 133         FIXME, these names should be rationalised with the names of
 134         the entry points which call them. Too bad we can't have one
 135         macro to define them both!
 136
 137 .enum bfd_flavour {
 138 .  bfd_target_unknown_flavour,
 139 .  bfd_target_aout_flavour,
 140 .  bfd_target_coff_flavour,
 141 .  bfd_target_ecoff_flavour,
 142 .  bfd_target_elf_flavour,
 143 .  bfd_target_ieee_flavour,
 144 .  bfd_target_nlm_flavour,
 145 .  bfd_target_oasys_flavour,
 146 .  bfd_target_tekhex_flavour,
 147 .  bfd_target_srec_flavour,
 148 .  bfd_target_som_flavour,
 149 .  bfd_target_os9k_flavour,
 150 .  bfd_target_versados_flavour
 151 .};
 152 .
 153 .{* Forward declaration.  *}
 154 .typedef struct bfd_link_info _bfd_link_info;
 155 .
 156 .typedef struct bfd_target
 157 .{
 158
 159 Identifies the kind of target, e.g., SunOS4, Ultrix, etc.
 160
 161 .  char *name;
 162
 163 The "flavour" of a back end is a general indication about the contents
 164 of a file.
 165
 166 .  enum bfd_flavour flavour;
 167
 168 The order of bytes within the data area of a file.
 169
 170 .  boolean byteorder_big_p;
 171
 172 The order of bytes within the header parts of a file.
 173
 174 .  boolean header_byteorder_big_p;
 175
 176 A mask of all the flags which an executable may have set -
 177 from the set <<NO_FLAGS>>, <<HAS_RELOC>>, ...<<D_PAGED>>.
 178
 179 .  flagword object_flags;
 180
 181 A mask of all the flags which a section may have set - from
 182 the set <<SEC_NO_FLAGS>>, <<SEC_ALLOC>>, ...<<SET_NEVER_LOAD>>.
 183
 184 .  flagword section_flags;
 185
 186 The character normally found at the front of a symbol
 187 (if any), perhaps `_'.
 188
 189 .  char symbol_leading_char;
 190
 191 The pad character for file names within an archive header.
 192
 193 .  char ar_pad_char;
 194
 195 The maximum number of characters in an archive header.
 196
 197 .  unsigned short ar_max_namelen;
 198
 199 The minimum alignment restriction for any section.
 200
 201 .  unsigned int align_power_min;
 202
 203 Entries for byte swapping for data. These are different from the other
 204 entry points, since they don't take a BFD asthe first argument.
 205 Certain other handlers could do the same.
 206
 207 .  bfd_vma      (*bfd_getx64) PARAMS ((const bfd_byte *));
 208 .  bfd_signed_vma (*bfd_getx_signed_64) PARAMS ((const bfd_byte *));
 209 .  void         (*bfd_putx64) PARAMS ((bfd_vma, bfd_byte *));
 210 .  bfd_vma      (*bfd_getx32) PARAMS ((const bfd_byte *));
 211 .  bfd_signed_vma (*bfd_getx_signed_32) PARAMS ((const bfd_byte *));
 212 .  void         (*bfd_putx32) PARAMS ((bfd_vma, bfd_byte *));
 213 .  bfd_vma      (*bfd_getx16) PARAMS ((const bfd_byte *));
 214 .  bfd_signed_vma (*bfd_getx_signed_16) PARAMS ((const bfd_byte *));
 215 .  void         (*bfd_putx16) PARAMS ((bfd_vma, bfd_byte *));
 216
 217 Byte swapping for the headers
 218
 219 .  bfd_vma      (*bfd_h_getx64) PARAMS ((const bfd_byte *));
 220 .  bfd_signed_vma (*bfd_h_getx_signed_64) PARAMS ((const bfd_byte *));
 221 .  void         (*bfd_h_putx64) PARAMS ((bfd_vma, bfd_byte *));
 222 .  bfd_vma      (*bfd_h_getx32) PARAMS ((const bfd_byte *));
 223 .  bfd_signed_vma (*bfd_h_getx_signed_32) PARAMS ((const bfd_byte *));
 224 .  void         (*bfd_h_putx32) PARAMS ((bfd_vma, bfd_byte *));
 225 .  bfd_vma      (*bfd_h_getx16) PARAMS ((const bfd_byte *));
 226 .  bfd_signed_vma (*bfd_h_getx_signed_16) PARAMS ((const bfd_byte *));
 227 .  void         (*bfd_h_putx16) PARAMS ((bfd_vma, bfd_byte *));
 228
 229 Format dependent routines: these are vectors of entry points
 230 within the target vector structure, one for each format to check.
 231
 232 Check the format of a file being read.  Return a <<bfd_target *>> or zero.
 233
 234 .  const struct bfd_target *(*_bfd_check_format[bfd_type_end]) PARAMS ((bfd *));
 235
 236 Set the format of a file being written.
 237
 238 .  boolean             (*_bfd_set_format[bfd_type_end]) PARAMS ((bfd *));
 239
 240 Write cached information into a file being written, at <<bfd_close>>.
 241
 242 .  boolean             (*_bfd_write_contents[bfd_type_end]) PARAMS ((bfd *));
 243
 244 The general target vector.
 245
 246 .
 247 .  {* Generic entry points.  *}
 248 .#define BFD_JUMP_TABLE_GENERIC(NAME)\
 249 .CAT(NAME,_close_and_cleanup),\
 250 .CAT(NAME,_bfd_free_cached_info),\
 251 .CAT(NAME,_new_section_hook),\
 252 .CAT(NAME,_get_section_contents)
 253 .  {* Called when the BFD is being closed to do any necessary cleanup.  *}
 254 .  boolean       (*_close_and_cleanup) PARAMS ((bfd *));
 255 .  {* Ask the BFD to free all cached information.  *}
 256 .  boolean (*_bfd_free_cached_info) PARAMS ((bfd *));
 257 .  {* Called when a new section is created.  *}
 258 .  boolean       (*_new_section_hook) PARAMS ((bfd *, sec_ptr));
 259 .  {* Read the contents of a section.  *}
 260 .  boolean       (*_bfd_get_section_contents) PARAMS ((bfd *, sec_ptr, PTR,
 261 .                                            file_ptr, bfd_size_type));
 262 .
 263 .  {* Entry points to copy private data.  *}
 264 .#define BFD_JUMP_TABLE_COPY(NAME)\
 265 .CAT(NAME,_bfd_copy_private_bfd_data),\
 266 .CAT(NAME,_bfd_merge_private_bfd_data),\
 267 .CAT(NAME,_bfd_copy_private_section_data),\
 268 .CAT(NAME,_bfd_copy_private_symbol_data),\
 269 .CAT(NAME,_bfd_set_private_flags)
 270 .  {* Called to copy BFD general private data from one object file
 271 .     to another.  *}
 272 .  boolean       (*_bfd_copy_private_bfd_data) PARAMS ((bfd *, bfd *));
 273 .  {* Called to merge BFD general private data from one object file
 274 .     to a common output file when linking.  *}
 275 .  boolean       (*_bfd_merge_private_bfd_data) PARAMS ((bfd *, bfd *));
 276 .  {* Called to copy BFD private section data from one object file
 277 .     to another.  *}
 278 .  boolean       (*_bfd_copy_private_section_data) PARAMS ((bfd *, sec_ptr,
 279 .                                                       bfd *, sec_ptr));
 280 .  {* Called to copy BFD private symbol data from one symbol
 281 .     to another.  *}
 282 .  boolean       (*_bfd_copy_private_symbol_data) PARAMS ((bfd *, asymbol *,
 283 .                                                          bfd *, asymbol *));
 284 .  {* Called to set private backend flags *}
 285 .  boolean       (*_bfd_set_private_flags) PARAMS ((bfd *, flagword));
 286 .
 287 .  {* Core file entry points.  *}
 288 .#define BFD_JUMP_TABLE_CORE(NAME)\
 289 .CAT(NAME,_core_file_failing_command),\
 290 .CAT(NAME,_core_file_failing_signal),\
 291 .CAT(NAME,_core_file_matches_executable_p)
 292 .  char *   (*_core_file_failing_command) PARAMS ((bfd *));
 293 .  int      (*_core_file_failing_signal) PARAMS ((bfd *));
 294 .  boolean  (*_core_file_matches_executable_p) PARAMS ((bfd *, bfd *));
 295 .
 296 .  {* Archive entry points.  *}
 297 .#define BFD_JUMP_TABLE_ARCHIVE(NAME)\
 298 .CAT(NAME,_slurp_armap),\
 299 .CAT(NAME,_slurp_extended_name_table),\
 300 .CAT(NAME,_construct_extended_name_table),\
 301 .CAT(NAME,_truncate_arname),\
 302 .CAT(NAME,_write_armap),\
 303 .CAT(NAME,_openr_next_archived_file),\
 304 .CAT(NAME,_generic_stat_arch_elt),\
 305 .CAT(NAME,_update_armap_timestamp)
 306 .  boolean  (*_bfd_slurp_armap) PARAMS ((bfd *));
 307 .  boolean  (*_bfd_slurp_extended_name_table) PARAMS ((bfd *));
 308 .  boolean  (*_bfd_construct_extended_name_table)
 309 .             PARAMS ((bfd *, char **, bfd_size_type *, const char **));
 310 .  void     (*_bfd_truncate_arname) PARAMS ((bfd *, CONST char *, char *));
 311 .  boolean  (*write_armap) PARAMS ((bfd *arch,
 312 .                              unsigned int elength,
 313 .                              struct orl *map,
 314 .                              unsigned int orl_count,
 315 .                              int stridx));
 316 .  bfd *    (*openr_next_archived_file) PARAMS ((bfd *arch, bfd *prev));
 317 .  int      (*_bfd_stat_arch_elt) PARAMS ((bfd *, struct stat *));
 318 .  boolean  (*_bfd_update_armap_timestamp) PARAMS ((bfd *));
 319 .
 320 .  {* Entry points used for symbols.  *}
 321 .#define BFD_JUMP_TABLE_SYMBOLS(NAME)\
 322 .CAT(NAME,_get_symtab_upper_bound),\
 323 .CAT(NAME,_get_symtab),\
 324 .CAT(NAME,_make_empty_symbol),\
 325 .CAT(NAME,_print_symbol),\
 326 .CAT(NAME,_get_symbol_info),\
 327 .CAT(NAME,_bfd_is_local_label),\
 328 .CAT(NAME,_get_lineno),\
 329 .CAT(NAME,_find_nearest_line),\
 330 .CAT(NAME,_bfd_make_debug_symbol)
 331 .  long  (*_bfd_get_symtab_upper_bound) PARAMS ((bfd *));
 332 .  long  (*_bfd_canonicalize_symtab) PARAMS ((bfd *,
 333 .                                             struct symbol_cache_entry **));
 334 .  struct symbol_cache_entry  *
 335 .                (*_bfd_make_empty_symbol) PARAMS ((bfd *));
 336 .  void          (*_bfd_print_symbol) PARAMS ((bfd *, PTR,
 337 .                                      struct symbol_cache_entry *,
 338 .                                      bfd_print_symbol_type));
 339 .#define bfd_print_symbol(b,p,s,e) BFD_SEND(b, _bfd_print_symbol, (b,p,s,e))
 340 .  void          (*_bfd_get_symbol_info) PARAMS ((bfd *,
 341 .                                      struct symbol_cache_entry *,
 342 .                                      symbol_info *));
 343 .#define bfd_get_symbol_info(b,p,e) BFD_SEND(b, _bfd_get_symbol_info, (b,p,e))
 344 .  boolean       (*_bfd_is_local_label) PARAMS ((bfd *, asymbol *));
 345 .
 346 .  alent *    (*_get_lineno) PARAMS ((bfd *, struct symbol_cache_entry *));
 347 .  boolean    (*_bfd_find_nearest_line) PARAMS ((bfd *abfd,
 348 .                    struct sec *section, struct symbol_cache_entry **symbols,
 349 .                    bfd_vma offset, CONST char **file, CONST char **func,
 350 .                    unsigned int *line));
 351 . {* Back-door to allow format-aware applications to create debug symbols
 352 .    while using BFD for everything else.  Currently used by the assembler
 353 .    when creating COFF files.  *}
 354 . asymbol *  (*_bfd_make_debug_symbol) PARAMS ((
 355 .       bfd *abfd,
 356 .       void *ptr,
 357 .       unsigned long size));
 358 .
 359 .  {* Routines for relocs.  *}
 360 .#define BFD_JUMP_TABLE_RELOCS(NAME)\
 361 .CAT(NAME,_get_reloc_upper_bound),\
 362 .CAT(NAME,_canonicalize_reloc),\
 363 .CAT(NAME,_bfd_reloc_type_lookup)
 364 .  long  (*_get_reloc_upper_bound) PARAMS ((bfd *, sec_ptr));
 365 .  long  (*_bfd_canonicalize_reloc) PARAMS ((bfd *, sec_ptr, arelent **,
 366 .                                            struct symbol_cache_entry **));
 367 .  {* See documentation on reloc types.  *}
 368 .  reloc_howto_type *
 369 .       (*reloc_type_lookup) PARAMS ((bfd *abfd,
 370 .                                     bfd_reloc_code_real_type code));
 371 .
 372 .  {* Routines used when writing an object file.  *}
 373 .#define BFD_JUMP_TABLE_WRITE(NAME)\
 374 .CAT(NAME,_set_arch_mach),\
 375 .CAT(NAME,_set_section_contents)
 376 .  boolean    (*_bfd_set_arch_mach) PARAMS ((bfd *, enum bfd_architecture,
 377 .                    unsigned long));
 378 .  boolean       (*_bfd_set_section_contents) PARAMS ((bfd *, sec_ptr, PTR,
 379 .                                            file_ptr, bfd_size_type));
 380 .
 381 .  {* Routines used by the linker.  *}
 382 .#define BFD_JUMP_TABLE_LINK(NAME)\
 383 .CAT(NAME,_sizeof_headers),\
 384 .CAT(NAME,_bfd_get_relocated_section_contents),\
 385 .CAT(NAME,_bfd_relax_section),\
 386 .CAT(NAME,_bfd_link_hash_table_create),\
 387 .CAT(NAME,_bfd_link_add_symbols),\
 388 .CAT(NAME,_bfd_final_link),\
 389 .CAT(NAME,_bfd_link_split_section)
 390 .  int        (*_bfd_sizeof_headers) PARAMS ((bfd *, boolean));
 391 .  bfd_byte * (*_bfd_get_relocated_section_contents) PARAMS ((bfd *,
 392 .                    struct bfd_link_info *, struct bfd_link_order *,
 393 .                    bfd_byte *data, boolean relocateable,
 394 .                    struct symbol_cache_entry **));
 395 .
 396 .  boolean    (*_bfd_relax_section) PARAMS ((bfd *, struct sec *,
 397 .                    struct bfd_link_info *, boolean *again));
 398 .
 399 .  {* Create a hash table for the linker.  Different backends store
 400 .     different information in this table.  *}
 401 .  struct bfd_link_hash_table *(*_bfd_link_hash_table_create) PARAMS ((bfd *));
 402 .
 403 .  {* Add symbols from this object file into the hash table.  *}
 404 .  boolean (*_bfd_link_add_symbols) PARAMS ((bfd *, struct bfd_link_info *));
 405 .
 406 .  {* Do a link based on the link_order structures attached to each
 407 .     section of the BFD.  *}
 408 .  boolean (*_bfd_final_link) PARAMS ((bfd *, struct bfd_link_info *));
 409 .
 410 .  {* Should this section be split up into smaller pieces during linking.  *}
 411 .  boolean (*_bfd_link_split_section) PARAMS ((bfd *, struct sec *));
 412 .
 413 . {* Routines to handle dynamic symbols and relocs.  *}
 414 .#define BFD_JUMP_TABLE_DYNAMIC(NAME)\
 415 .CAT(NAME,_get_dynamic_symtab_upper_bound),\
 416 .CAT(NAME,_canonicalize_dynamic_symtab),\
 417 .CAT(NAME,_get_dynamic_reloc_upper_bound),\
 418 .CAT(NAME,_canonicalize_dynamic_reloc)
 419 .  {* Get the amount of memory required to hold the dynamic symbols. *}
 420 .  long  (*_bfd_get_dynamic_symtab_upper_bound) PARAMS ((bfd *));
 421 .  {* Read in the dynamic symbols.  *}
 422 .  long  (*_bfd_canonicalize_dynamic_symtab)
 423 .    PARAMS ((bfd *, struct symbol_cache_entry **));
 424 .  {* Get the amount of memory required to hold the dynamic relocs.  *}
 425 .  long  (*_bfd_get_dynamic_reloc_upper_bound) PARAMS ((bfd *));
 426 .  {* Read in the dynamic relocs.  *}
 427 .  long  (*_bfd_canonicalize_dynamic_reloc)
 428 .    PARAMS ((bfd *, arelent **, struct symbol_cache_entry **));
 429 .
 430
 431 Data for use by back-end routines, which isn't generic enough to belong
 432 in this structure.
 433
 434 . PTR backend_data;
 435 .} bfd_target;
 436
 437 */
 438
 439 /* All known xvecs (even those that don't compile on all systems).
 440    Alphabetized for easy reference.
 441    They are listed a second time below, since
 442    we can't intermix extern's and initializers.  */
 443 extern const bfd_target a29kcoff_big_vec;
 444 extern const bfd_target a_out_adobe_vec;
 445 extern const bfd_target aout_arm_big_vec;
 446 extern const bfd_target aout_arm_little_vec;
 447 extern const bfd_target aout_mips_big_vec;
 448 extern const bfd_target aout_mips_little_vec;
 449 extern const bfd_target aout0_big_vec;
 450 extern const bfd_target apollocoff_vec;
 451 extern const bfd_target armpe_vec;
 452 extern const bfd_target armpei_vec;
 453 extern const bfd_target b_out_vec_big_host;
 454 extern const bfd_target b_out_vec_little_host;
 455 /* start-sanitize-arc */
 456 extern const bfd_target bfd_elf32_bigarc_vec;
 457 extern const bfd_target bfd_elf32_littlearc_vec;
 458 /* end-sanitize-arc */
 459 extern const bfd_target bfd_elf32_big_generic_vec;
 460 extern const bfd_target bfd_elf32_bigmips_vec;
 461 extern const bfd_target bfd_elf32_hppa_vec;
 462 extern const bfd_target bfd_elf32_i386_vec;
 463 extern const bfd_target bfd_elf32_i860_vec;
 464 extern const bfd_target bfd_elf32_little_generic_vec;
 465 extern const bfd_target bfd_elf32_littlemips_vec;
 466 extern const bfd_target bfd_elf32_m68k_vec;
 467 extern const bfd_target bfd_elf32_m88k_vec;
 468 extern const bfd_target bfd_elf32_powerpc_vec;
 469 extern const bfd_target bfd_elf32_powerpcle_vec;
 470 extern const bfd_target bfd_elf32_sparc_vec;
 471 extern const bfd_target bfd_elf64_big_generic_vec;
 472 extern const bfd_target bfd_elf64_little_generic_vec;
 473 extern const bfd_target bfd_elf64_sparc_vec;
 474 extern const bfd_target demo_64_vec;
 475 extern const bfd_target ecoff_big_vec;
 476 extern const bfd_target ecoff_little_vec;
 477 extern const bfd_target ecoffalpha_little_vec;
 478 extern const bfd_target h8300coff_vec;
 479 extern const bfd_target h8500coff_vec;
 480 extern const bfd_target host_aout_vec;
 481 extern const bfd_target hp300bsd_vec;
 482 extern const bfd_target hp300hpux_vec;
 483 extern const bfd_target som_vec;
 484 extern const bfd_target i386aout_vec;
 485 extern const bfd_target i386bsd_vec;
 486 extern const bfd_target i386dynix_vec;
 487 extern const bfd_target i386os9k_vec;
 488 extern const bfd_target i386coff_vec;
 489 extern const bfd_target i386pe_vec;
 490 extern const bfd_target i386pei_vec;
 491 extern const bfd_target go32coff_vec;
 492 extern const bfd_target i386linux_vec;
 493 extern const bfd_target i386lynx_aout_vec;
 494 extern const bfd_target i386lynx_coff_vec;
 495 extern const bfd_target i386mach3_vec;
 496 extern const bfd_target i386msdos_vec;
 497 extern const bfd_target i386netbsd_vec;
 498 extern const bfd_target icoff_big_vec;
 499 extern const bfd_target icoff_little_vec;
 500 extern const bfd_target ieee_vec;
 501 extern const bfd_target m68kcoff_vec;
 502 extern const bfd_target m68kcoffun_vec;
 503 extern const bfd_target m68klynx_aout_vec;
 504 extern const bfd_target m68klynx_coff_vec;
 505 extern const bfd_target m68knetbsd_vec;
 506 extern const bfd_target m88kbcs_vec;
 507 extern const bfd_target m88kmach3_vec;
 508 extern const bfd_target newsos3_vec;
 509 extern const bfd_target nlm32_i386_vec;
 510 extern const bfd_target nlm32_sparc_vec;
 511 extern const bfd_target nlm32_alpha_vec;
 512 extern const bfd_target nlm32_powerpc_vec;
 513 extern const bfd_target pc532netbsd_vec;
 514 extern const bfd_target oasys_vec;
 515 extern const bfd_target pc532machaout_vec;
 516 extern const bfd_target riscix_vec;
 517 extern const bfd_target rs6000coff_vec;
 518 extern const bfd_target shcoff_vec;
 519 /* start-sanitize-rce */
 520 extern bfd_target rce_aout_vec;
 521 /* end-sanitize-rce */
 522 extern const bfd_target shlcoff_vec;
 523 extern const bfd_target sparclynx_aout_vec;
 524 extern const bfd_target sparclynx_coff_vec;
 525 extern const bfd_target sparcnetbsd_vec;
 526 extern const bfd_target sparccoff_vec;
 527 extern const bfd_target sunos_big_vec;
 528 extern const bfd_target tekhex_vec;
 529 extern const bfd_target versados_vec;
 530 extern const bfd_target we32kcoff_vec;
 531 extern const bfd_target w65_vec;
 532 extern const bfd_target z8kcoff_vec;
 533
 534 /* srec is always included.  */
 535 extern const bfd_target srec_vec;
 536 extern const bfd_target symbolsrec_vec;
 537
 538 /* binary is always included.  */
 539 extern const bfd_target binary_vec;
 540
 541 /* All of the xvecs for core files.  */
 542 extern const bfd_target aix386_core_vec;
 543 extern const bfd_target cisco_core_vec;
 544 extern const bfd_target hpux_core_vec;
 545 extern const bfd_target hppabsd_core_vec;
 546 extern const bfd_target irix_core_vec;
 547 extern const bfd_target osf_core_vec;
 548 extern const bfd_target sco_core_vec;
 549 extern const bfd_target trad_core_vec;
 550 extern const bfd_target ptrace_core_vec;
 551
 552 const bfd_target * const bfd_target_vector[] = {
 553
 554 #ifdef SELECT_VECS
 555
 556         SELECT_VECS,
 557
 558 #else /* not SELECT_VECS */
 559
 560 #ifdef DEFAULT_VECTOR
 561         &DEFAULT_VECTOR,
 562 #endif
 563         /* This list is alphabetized to make it easy to compare
 564            with other vector lists -- the decls above and
 565            the case statement in configure.in.
 566            Vectors that don't compile on all systems, or aren't finished,
 567            should have an entry here with #if 0 around it, to show that
 568            it wasn't omitted by mistake.  */
 569         &a29kcoff_big_vec,
 570         &a_out_adobe_vec,
 571 #if 0                           /* No one seems to use this.  */
 572         &aout_mips_big_vec,
 573 #endif
 574         &aout_mips_little_vec,
 575         &b_out_vec_big_host,
 576         &b_out_vec_little_host,
 577
 578         /* This, and other vectors, may not be used in any *.mt configuration.
 579            But that does not mean they are unnecessary.  If configured with
 580            --enable-targets=all, objdump or gdb should be able to examine
 581            the file even if we don't recognize the machine type.  */
 582         &bfd_elf32_big_generic_vec,
 583 /* start-sanitize-arc */
 584         &bfd_elf32_bigarc_vec,
 585 /* end-sanitize-arc */
 586         &bfd_elf32_bigmips_vec,
 587         &bfd_elf32_hppa_vec,
 588         &bfd_elf32_i386_vec,
 589         &bfd_elf32_i860_vec,
 590         &bfd_elf32_little_generic_vec,
 591 /* start-sanitize-arc */
 592         &bfd_elf32_littlearc_vec,
 593 /* end-sanitize-arc */
 594         &bfd_elf32_littlemips_vec,
 595         &bfd_elf32_m68k_vec,
 596         &bfd_elf32_m88k_vec,
 597         &bfd_elf32_sparc_vec,
 598         &bfd_elf32_powerpc_vec,
 599 #ifdef BFD64                    /* No one seems to use this.  */
 600         &bfd_elf64_big_generic_vec,
 601         &bfd_elf64_little_generic_vec,
 602 #endif
 603 #if 0
 604         &bfd_elf64_sparc_vec,
 605 #endif
 606         /* We don't include cisco_core_vec.  Although it has a magic number,
 607            the magic number isn't at the beginning of the file, and thus
 608            might spuriously match other kinds of files.  */
 609 #ifdef BFD64
 610         &demo_64_vec,   /* Only compiled if host has long-long support */
 611 #endif
 612         &ecoff_big_vec,
 613         &ecoff_little_vec,
 614 #if 0
 615         &ecoffalpha_little_vec,
 616 #endif
 617         &h8300coff_vec,
 618         &h8500coff_vec,
 619 #if 0
 620         /* Since a.out files lack decent magic numbers, no way to recognize
 621            which kind of a.out file it is.  */
 622         &host_aout_vec,
 623 #endif
 624 #if 0                           /* Clashes with sunos_big_vec magic no.  */
 625         &hp300bsd_vec,
 626 #endif
 627         &hp300hpux_vec,
 628 #if defined (HOST_HPPAHPUX) || defined (HOST_HPPABSD) || defined (HOST_HPPAOSF)
 629         &som_vec,
 630 #endif
 631         &i386aout_vec,
 632         &i386bsd_vec,
 633         &i386coff_vec,
 634         &go32coff_vec,
 635 #if 0
 636         /* Since a.out files lack decent magic numbers, no way to recognize
 637            which kind of a.out file it is.  */
 638         &i386linux_vec,
 639 #endif
 640         &i386lynx_aout_vec,
 641         &i386lynx_coff_vec,
 642 #if 0
 643         /* No distinguishing features for Mach 3 executables.  */
 644         &i386mach3_vec,
 645 #endif
 646         &i386msdos_vec,
 647         &i386netbsd_vec,
 648         &i386os9k_vec,
 649         &i386pe_vec,
 650         &i386pei_vec,
 651         &armpe_vec,
 652         &armpei_vec,
 653         &icoff_big_vec,
 654         &icoff_little_vec,
 655         &ieee_vec,
 656         &m68kcoff_vec,
 657         &m68kcoffun_vec,
 658         &m68klynx_aout_vec,
 659         &m68klynx_coff_vec,
 660         &m68knetbsd_vec,
 661         &m88kbcs_vec,
 662         &m88kmach3_vec,
 663         &newsos3_vec,
 664         &nlm32_i386_vec,
 665         &nlm32_sparc_vec,
 666 #ifdef BFD64
 667         &nlm32_alpha_vec,
 668 #endif
 669         &pc532netbsd_vec,
 670 #if 0
 671         /* We have no oasys tools anymore, so we can't test any of this
 672            anymore. If you want to test the stuff yourself, go ahead...
 673            steve@cygnus.com
 674            Worse, since there is no magic number for archives, there
 675            can be annoying target mis-matches.  */
 676         &oasys_vec,
 677 #endif
 678         &pc532machaout_vec,
 679 #if 0
 680         /* We have no way of distinguishing these from other a.out variants */
 681         &aout_arm_big_vec,
 682         &aout_arm_little_vec,
 683         &riscix_vec,
 684 #endif
 685         &rs6000coff_vec,
 686         &shcoff_vec,
 687         &shlcoff_vec,
 688 /* start-sanitize-rce */
 689         &rce_aout_vec,
 690 /* end-sanitize-rce */
 691         &sparclynx_aout_vec,
 692         &sparclynx_coff_vec,
 693         &sparcnetbsd_vec,
 694         &sunos_big_vec,
 695         &aout0_big_vec,
 696         &tekhex_vec,
 697         &we32kcoff_vec,
 698         &versados_vec,
 699         &z8kcoff_vec,
 700
 701 #endif /* not SELECT_VECS */
 702
 703 /* Always support S-records, for convenience.  */
 704         &srec_vec,
 705         &symbolsrec_vec,
 706 /* And tekhex */
 707         &tekhex_vec,
 708 /* Likewise for binary output.  */
 709         &binary_vec,
 710
 711 /* Add any required traditional-core-file-handler.  */
 712
 713 #ifdef AIX386_CORE
 714         &aix386_core_vec,
 715 #endif
 716 #ifdef HPUX_CORE
 717         &hpux_core_vec,
 718 #endif
 719 #ifdef HPPABSD_CORE
 720         &hppabsd_core_vec,
 721 #endif
 722 #ifdef IRIX_CORE
 723         &irix_core_vec,
 724 #endif
 725 #ifdef OSF_CORE
 726         &osf_core_vec,
 727 #endif
 728 #ifdef  TRAD_CORE
 729         &trad_core_vec,
 730 #endif
 731
 732 #ifdef  PTRACE_CORE
 733         &ptrace_core_vec,
 734 #endif
 735
 736         NULL /* end of list marker */
 737 };
 738
 739 /* bfd_default_vector[0] contains either the address of the default vector,
 740    if there is one, or zero if there isn't.  */
 741
 742 const bfd_target * const bfd_default_vector[] = {
 743 #ifdef DEFAULT_VECTOR
 744         &DEFAULT_VECTOR,
 745 #endif
 746         NULL
 747 };
 748
 749 /* When there is an ambiguous match, bfd_check_format_matches puts the
 750    names of the matching targets in an array.  This variable is the maximum
 751    number of entries that the array could possibly need.  */
 752 const size_t _bfd_target_vector_entries = sizeof(bfd_target_vector)/sizeof(*bfd_target_vector);
 753
 754 /*
 755 FUNCTION
 756         bfd_find_target
 757
 758 SYNOPSIS
 759         const bfd_target *bfd_find_target(CONST char *target_name, bfd *abfd);
 760
 761 DESCRIPTION
 762         Return a pointer to the transfer vector for the object target
 763         named @var{target_name}.  If @var{target_name} is <<NULL>>, choose the
 764         one in the environment variable <<GNUTARGET>>; if that is null or not
 765         defined, then choose the first entry in the target list.
 766         Passing in the string "default" or setting the environment
 767         variable to "default" will cause the first entry in the target
 768         list to be returned, and "target_defaulted" will be set in the
 769         BFD.  This causes <<bfd_check_format>> to loop over all the
 770         targets to find the one that matches the file being read.
 771 */
 772
 773 const bfd_target *
 774 bfd_find_target (target_name, abfd)
 775      CONST char *target_name;
 776      bfd *abfd;
 777 {
 778   const bfd_target * const *target;
 779   extern char *getenv ();
 780   CONST char *targname = (target_name ? target_name :
 781                           (CONST char *) getenv ("GNUTARGET"));
 782
 783   /* This is safe; the vector cannot be null */
 784   if (targname == NULL || !strcmp (targname, "default")) {
 785     abfd->target_defaulted = true;
 786     return abfd->xvec = bfd_target_vector[0];
 787   }
 788
 789   abfd->target_defaulted = false;
 790
 791   for (target = &bfd_target_vector[0]; *target != NULL; target++) {
 792     if (!strcmp (targname, (*target)->name))
 793       return abfd->xvec = *target;
 794   }
 795
 796   bfd_set_error (bfd_error_invalid_target);
 797   return NULL;
 798 }
 799
 800
 801 /*
 802 FUNCTION
 803         bfd_target_list
 804
 805 SYNOPSIS
 806         const char **bfd_target_list(void);
 807
 808 DESCRIPTION
 809         Return a freshly malloced NULL-terminated
 810         vector of the names of all the valid BFD targets. Do not
 811         modify the names.
 812
 813 */
 814
 815 const char **
 816 bfd_target_list ()
 817 {
 818   int vec_length= 0;
 819 #ifdef NATIVE_HPPAHPUX_COMPILER
 820   /* The native compiler on the HP9000/700 has a bug which causes it
 821      to loop endlessly when compiling this file.  This avoids it.  */
 822   volatile
 823 #endif
 824     const bfd_target * const *target;
 825   CONST  char **name_list, **name_ptr;
 826
 827   for (target = &bfd_target_vector[0]; *target != NULL; target++)
 828     vec_length++;
 829
 830   name_ptr = name_list = (CONST char **)
 831     bfd_zmalloc ((vec_length + 1) * sizeof (char **));
 832
 833   if (name_list == NULL) {
 834     bfd_set_error (bfd_error_no_memory);
 835     return NULL;
 836   }
 837
 838   for (target = &bfd_target_vector[0]; *target != NULL; target++)
 839     *(name_ptr++) = (*target)->name;
 840
 841   return name_list;
 842 }