| 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 | } |