| 1 | /* Linker file opening and searching. |
| 2 | Copyright (C) 1991-2019 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of the GNU Binutils. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 19 | MA 02110-1301, USA. */ |
| 20 | |
| 21 | #include "sysdep.h" |
| 22 | #include "bfd.h" |
| 23 | #include "bfdlink.h" |
| 24 | #include "ctf-api.h" |
| 25 | #include "safe-ctype.h" |
| 26 | #include "ld.h" |
| 27 | #include "ldmisc.h" |
| 28 | #include "ldexp.h" |
| 29 | #include "ldlang.h" |
| 30 | #include "ldfile.h" |
| 31 | #include "ldmain.h" |
| 32 | #include <ldgram.h> |
| 33 | #include "ldlex.h" |
| 34 | #include "ldemul.h" |
| 35 | #include "libiberty.h" |
| 36 | #include "filenames.h" |
| 37 | #ifdef ENABLE_PLUGINS |
| 38 | #include "plugin-api.h" |
| 39 | #include "plugin.h" |
| 40 | #endif /* ENABLE_PLUGINS */ |
| 41 | |
| 42 | bfd_boolean ldfile_assumed_script = FALSE; |
| 43 | const char *ldfile_output_machine_name = ""; |
| 44 | unsigned long ldfile_output_machine; |
| 45 | enum bfd_architecture ldfile_output_architecture; |
| 46 | search_dirs_type *search_head; |
| 47 | |
| 48 | #ifdef VMS |
| 49 | static char *slash = ""; |
| 50 | #else |
| 51 | #if defined (_WIN32) && !defined (__CYGWIN32__) |
| 52 | static char *slash = "\\"; |
| 53 | #else |
| 54 | static char *slash = "/"; |
| 55 | #endif |
| 56 | #endif |
| 57 | |
| 58 | typedef struct search_arch |
| 59 | { |
| 60 | char *name; |
| 61 | struct search_arch *next; |
| 62 | } search_arch_type; |
| 63 | |
| 64 | static search_dirs_type **search_tail_ptr = &search_head; |
| 65 | static search_arch_type *search_arch_head; |
| 66 | static search_arch_type **search_arch_tail_ptr = &search_arch_head; |
| 67 | |
| 68 | /* Test whether a pathname, after canonicalization, is the same or a |
| 69 | sub-directory of the sysroot directory. */ |
| 70 | |
| 71 | static bfd_boolean |
| 72 | is_sysrooted_pathname (const char *name) |
| 73 | { |
| 74 | char *realname; |
| 75 | int len; |
| 76 | bfd_boolean result; |
| 77 | |
| 78 | if (ld_canon_sysroot == NULL) |
| 79 | return FALSE; |
| 80 | |
| 81 | realname = lrealpath (name); |
| 82 | len = strlen (realname); |
| 83 | result = FALSE; |
| 84 | if (len > ld_canon_sysroot_len |
| 85 | && IS_DIR_SEPARATOR (realname[ld_canon_sysroot_len])) |
| 86 | { |
| 87 | realname[ld_canon_sysroot_len] = '\0'; |
| 88 | result = FILENAME_CMP (ld_canon_sysroot, realname) == 0; |
| 89 | } |
| 90 | |
| 91 | free (realname); |
| 92 | return result; |
| 93 | } |
| 94 | |
| 95 | /* Adds NAME to the library search path. |
| 96 | Makes a copy of NAME using xmalloc(). */ |
| 97 | |
| 98 | void |
| 99 | ldfile_add_library_path (const char *name, bfd_boolean cmdline) |
| 100 | { |
| 101 | search_dirs_type *new_dirs; |
| 102 | |
| 103 | if (!cmdline && config.only_cmd_line_lib_dirs) |
| 104 | return; |
| 105 | |
| 106 | new_dirs = (search_dirs_type *) xmalloc (sizeof (search_dirs_type)); |
| 107 | new_dirs->next = NULL; |
| 108 | new_dirs->cmdline = cmdline; |
| 109 | *search_tail_ptr = new_dirs; |
| 110 | search_tail_ptr = &new_dirs->next; |
| 111 | |
| 112 | /* If a directory is marked as honoring sysroot, prepend the sysroot path |
| 113 | now. */ |
| 114 | if (name[0] == '=') |
| 115 | new_dirs->name = concat (ld_sysroot, name + 1, (const char *) NULL); |
| 116 | else if (CONST_STRNEQ (name, "$SYSROOT")) |
| 117 | new_dirs->name = concat (ld_sysroot, name + strlen ("$SYSROOT"), (const char *) NULL); |
| 118 | else |
| 119 | new_dirs->name = xstrdup (name); |
| 120 | } |
| 121 | |
| 122 | /* Try to open a BFD for a lang_input_statement. */ |
| 123 | |
| 124 | bfd_boolean |
| 125 | ldfile_try_open_bfd (const char *attempt, |
| 126 | lang_input_statement_type *entry) |
| 127 | { |
| 128 | entry->the_bfd = bfd_openr (attempt, entry->target); |
| 129 | |
| 130 | if (verbose) |
| 131 | { |
| 132 | if (entry->the_bfd == NULL) |
| 133 | info_msg (_("attempt to open %s failed\n"), attempt); |
| 134 | else |
| 135 | info_msg (_("attempt to open %s succeeded\n"), attempt); |
| 136 | } |
| 137 | |
| 138 | if (entry->the_bfd == NULL) |
| 139 | { |
| 140 | if (bfd_get_error () == bfd_error_invalid_target) |
| 141 | einfo (_("%F%P: invalid BFD target `%s'\n"), entry->target); |
| 142 | return FALSE; |
| 143 | } |
| 144 | |
| 145 | /* Linker needs to decompress sections. */ |
| 146 | entry->the_bfd->flags |= BFD_DECOMPRESS; |
| 147 | |
| 148 | /* This is a linker input BFD. */ |
| 149 | entry->the_bfd->is_linker_input = 1; |
| 150 | |
| 151 | #ifdef ENABLE_PLUGINS |
| 152 | if (entry->flags.lto_output) |
| 153 | entry->the_bfd->lto_output = 1; |
| 154 | #endif |
| 155 | |
| 156 | /* If we are searching for this file, see if the architecture is |
| 157 | compatible with the output file. If it isn't, keep searching. |
| 158 | If we can't open the file as an object file, stop the search |
| 159 | here. If we are statically linking, ensure that we don't link |
| 160 | a dynamic object. |
| 161 | |
| 162 | In the code below, it's OK to exit early if the check fails, |
| 163 | closing the checked BFD and returning FALSE, but if the BFD |
| 164 | checks out compatible, do not exit early returning TRUE, or |
| 165 | the plugins will not get a chance to claim the file. */ |
| 166 | |
| 167 | if (entry->flags.search_dirs || !entry->flags.dynamic) |
| 168 | { |
| 169 | bfd *check; |
| 170 | |
| 171 | if (bfd_check_format (entry->the_bfd, bfd_archive)) |
| 172 | check = bfd_openr_next_archived_file (entry->the_bfd, NULL); |
| 173 | else |
| 174 | check = entry->the_bfd; |
| 175 | |
| 176 | if (check != NULL) |
| 177 | { |
| 178 | if (!bfd_check_format (check, bfd_object)) |
| 179 | { |
| 180 | if (check == entry->the_bfd |
| 181 | && entry->flags.search_dirs |
| 182 | && bfd_get_error () == bfd_error_file_not_recognized |
| 183 | && !ldemul_unrecognized_file (entry)) |
| 184 | { |
| 185 | int token, skip = 0; |
| 186 | char *arg, *arg1, *arg2, *arg3; |
| 187 | extern FILE *yyin; |
| 188 | |
| 189 | /* Try to interpret the file as a linker script. */ |
| 190 | ldfile_open_command_file (attempt); |
| 191 | |
| 192 | ldfile_assumed_script = TRUE; |
| 193 | parser_input = input_selected; |
| 194 | ldlex_both (); |
| 195 | token = INPUT_SCRIPT; |
| 196 | while (token != 0) |
| 197 | { |
| 198 | switch (token) |
| 199 | { |
| 200 | case OUTPUT_FORMAT: |
| 201 | if ((token = yylex ()) != '(') |
| 202 | continue; |
| 203 | if ((token = yylex ()) != NAME) |
| 204 | continue; |
| 205 | arg1 = yylval.name; |
| 206 | arg2 = NULL; |
| 207 | arg3 = NULL; |
| 208 | token = yylex (); |
| 209 | if (token == ',') |
| 210 | { |
| 211 | if ((token = yylex ()) != NAME) |
| 212 | { |
| 213 | free (arg1); |
| 214 | continue; |
| 215 | } |
| 216 | arg2 = yylval.name; |
| 217 | if ((token = yylex ()) != ',' |
| 218 | || (token = yylex ()) != NAME) |
| 219 | { |
| 220 | free (arg1); |
| 221 | free (arg2); |
| 222 | continue; |
| 223 | } |
| 224 | arg3 = yylval.name; |
| 225 | token = yylex (); |
| 226 | } |
| 227 | if (token == ')') |
| 228 | { |
| 229 | switch (command_line.endian) |
| 230 | { |
| 231 | default: |
| 232 | case ENDIAN_UNSET: |
| 233 | arg = arg1; break; |
| 234 | case ENDIAN_BIG: |
| 235 | arg = arg2 ? arg2 : arg1; break; |
| 236 | case ENDIAN_LITTLE: |
| 237 | arg = arg3 ? arg3 : arg1; break; |
| 238 | } |
| 239 | if (strcmp (arg, lang_get_output_target ()) != 0) |
| 240 | skip = 1; |
| 241 | } |
| 242 | free (arg1); |
| 243 | if (arg2) free (arg2); |
| 244 | if (arg3) free (arg3); |
| 245 | break; |
| 246 | case NAME: |
| 247 | case LNAME: |
| 248 | case VERS_IDENTIFIER: |
| 249 | case VERS_TAG: |
| 250 | free (yylval.name); |
| 251 | break; |
| 252 | case INT: |
| 253 | if (yylval.bigint.str) |
| 254 | free (yylval.bigint.str); |
| 255 | break; |
| 256 | } |
| 257 | token = yylex (); |
| 258 | } |
| 259 | ldlex_popstate (); |
| 260 | ldfile_assumed_script = FALSE; |
| 261 | fclose (yyin); |
| 262 | yyin = NULL; |
| 263 | if (skip) |
| 264 | { |
| 265 | if (command_line.warn_search_mismatch) |
| 266 | einfo (_("%P: skipping incompatible %s " |
| 267 | "when searching for %s\n"), |
| 268 | attempt, entry->local_sym_name); |
| 269 | bfd_close (entry->the_bfd); |
| 270 | entry->the_bfd = NULL; |
| 271 | return FALSE; |
| 272 | } |
| 273 | } |
| 274 | goto success; |
| 275 | } |
| 276 | |
| 277 | if (!entry->flags.dynamic && (entry->the_bfd->flags & DYNAMIC) != 0) |
| 278 | { |
| 279 | einfo (_("%F%P: attempted static link of dynamic object `%s'\n"), |
| 280 | attempt); |
| 281 | bfd_close (entry->the_bfd); |
| 282 | entry->the_bfd = NULL; |
| 283 | return FALSE; |
| 284 | } |
| 285 | |
| 286 | if (entry->flags.search_dirs |
| 287 | && !bfd_arch_get_compatible (check, link_info.output_bfd, |
| 288 | command_line.accept_unknown_input_arch) |
| 289 | /* XCOFF archives can have 32 and 64 bit objects. */ |
| 290 | && !(bfd_get_flavour (check) == bfd_target_xcoff_flavour |
| 291 | && (bfd_get_flavour (link_info.output_bfd) |
| 292 | == bfd_target_xcoff_flavour) |
| 293 | && bfd_check_format (entry->the_bfd, bfd_archive))) |
| 294 | { |
| 295 | if (command_line.warn_search_mismatch) |
| 296 | einfo (_("%P: skipping incompatible %s " |
| 297 | "when searching for %s\n"), |
| 298 | attempt, entry->local_sym_name); |
| 299 | bfd_close (entry->the_bfd); |
| 300 | entry->the_bfd = NULL; |
| 301 | return FALSE; |
| 302 | } |
| 303 | } |
| 304 | } |
| 305 | success: |
| 306 | #ifdef ENABLE_PLUGINS |
| 307 | /* If plugins are active, they get first chance to claim |
| 308 | any successfully-opened input file. We skip archives |
| 309 | here; the plugin wants us to offer it the individual |
| 310 | members when we enumerate them, not the whole file. We |
| 311 | also ignore corefiles, because that's just weird. It is |
| 312 | a needed side-effect of calling bfd_check_format with |
| 313 | bfd_object that it sets the bfd's arch and mach, which |
| 314 | will be needed when and if we want to bfd_create a new |
| 315 | one using this one as a template. */ |
| 316 | if (link_info.lto_plugin_active |
| 317 | && !no_more_claiming |
| 318 | && bfd_check_format (entry->the_bfd, bfd_object)) |
| 319 | plugin_maybe_claim (entry); |
| 320 | #endif /* ENABLE_PLUGINS */ |
| 321 | |
| 322 | /* It opened OK, the format checked out, and the plugins have had |
| 323 | their chance to claim it, so this is success. */ |
| 324 | return TRUE; |
| 325 | } |
| 326 | |
| 327 | /* Search for and open the file specified by ENTRY. If it is an |
| 328 | archive, use ARCH, LIB and SUFFIX to modify the file name. */ |
| 329 | |
| 330 | bfd_boolean |
| 331 | ldfile_open_file_search (const char *arch, |
| 332 | lang_input_statement_type *entry, |
| 333 | const char *lib, |
| 334 | const char *suffix) |
| 335 | { |
| 336 | search_dirs_type *search; |
| 337 | |
| 338 | /* If this is not an archive, try to open it in the current |
| 339 | directory first. */ |
| 340 | if (!entry->flags.maybe_archive) |
| 341 | { |
| 342 | if (entry->flags.sysrooted && IS_ABSOLUTE_PATH (entry->filename)) |
| 343 | { |
| 344 | char *name = concat (ld_sysroot, entry->filename, |
| 345 | (const char *) NULL); |
| 346 | if (ldfile_try_open_bfd (name, entry)) |
| 347 | { |
| 348 | entry->filename = name; |
| 349 | return TRUE; |
| 350 | } |
| 351 | free (name); |
| 352 | } |
| 353 | else if (ldfile_try_open_bfd (entry->filename, entry)) |
| 354 | return TRUE; |
| 355 | |
| 356 | if (IS_ABSOLUTE_PATH (entry->filename)) |
| 357 | return FALSE; |
| 358 | } |
| 359 | |
| 360 | for (search = search_head; search != NULL; search = search->next) |
| 361 | { |
| 362 | char *string; |
| 363 | |
| 364 | if (entry->flags.dynamic && !bfd_link_relocatable (&link_info)) |
| 365 | { |
| 366 | if (ldemul_open_dynamic_archive (arch, search, entry)) |
| 367 | return TRUE; |
| 368 | } |
| 369 | |
| 370 | if (entry->flags.maybe_archive && !entry->flags.full_name_provided) |
| 371 | string = concat (search->name, slash, lib, entry->filename, |
| 372 | arch, suffix, (const char *) NULL); |
| 373 | else |
| 374 | string = concat (search->name, slash, entry->filename, |
| 375 | (const char *) 0); |
| 376 | |
| 377 | if (ldfile_try_open_bfd (string, entry)) |
| 378 | { |
| 379 | entry->filename = string; |
| 380 | return TRUE; |
| 381 | } |
| 382 | |
| 383 | free (string); |
| 384 | } |
| 385 | |
| 386 | return FALSE; |
| 387 | } |
| 388 | |
| 389 | /* Open the input file specified by ENTRY. |
| 390 | PR 4437: Do not stop on the first missing file, but |
| 391 | continue processing other input files in case there |
| 392 | are more errors to report. */ |
| 393 | |
| 394 | void |
| 395 | ldfile_open_file (lang_input_statement_type *entry) |
| 396 | { |
| 397 | if (entry->the_bfd != NULL) |
| 398 | return; |
| 399 | |
| 400 | if (!entry->flags.search_dirs) |
| 401 | { |
| 402 | if (ldfile_try_open_bfd (entry->filename, entry)) |
| 403 | return; |
| 404 | |
| 405 | if (filename_cmp (entry->filename, entry->local_sym_name) != 0) |
| 406 | einfo (_("%P: cannot find %s (%s): %E\n"), |
| 407 | entry->filename, entry->local_sym_name); |
| 408 | else |
| 409 | einfo (_("%P: cannot find %s: %E\n"), entry->local_sym_name); |
| 410 | |
| 411 | entry->flags.missing_file = TRUE; |
| 412 | input_flags.missing_file = TRUE; |
| 413 | } |
| 414 | else |
| 415 | { |
| 416 | search_arch_type *arch; |
| 417 | bfd_boolean found = FALSE; |
| 418 | |
| 419 | /* Try to open <filename><suffix> or lib<filename><suffix>.a */ |
| 420 | for (arch = search_arch_head; arch != NULL; arch = arch->next) |
| 421 | { |
| 422 | found = ldfile_open_file_search (arch->name, entry, "lib", ".a"); |
| 423 | if (found) |
| 424 | break; |
| 425 | #ifdef VMS |
| 426 | found = ldfile_open_file_search (arch->name, entry, ":lib", ".a"); |
| 427 | if (found) |
| 428 | break; |
| 429 | #endif |
| 430 | found = ldemul_find_potential_libraries (arch->name, entry); |
| 431 | if (found) |
| 432 | break; |
| 433 | } |
| 434 | |
| 435 | /* If we have found the file, we don't need to search directories |
| 436 | again. */ |
| 437 | if (found) |
| 438 | entry->flags.search_dirs = FALSE; |
| 439 | else |
| 440 | { |
| 441 | if (entry->flags.sysrooted |
| 442 | && ld_sysroot |
| 443 | && IS_ABSOLUTE_PATH (entry->local_sym_name)) |
| 444 | einfo (_("%P: cannot find %s inside %s\n"), |
| 445 | entry->local_sym_name, ld_sysroot); |
| 446 | else |
| 447 | einfo (_("%P: cannot find %s\n"), entry->local_sym_name); |
| 448 | entry->flags.missing_file = TRUE; |
| 449 | input_flags.missing_file = TRUE; |
| 450 | } |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | /* Try to open NAME. */ |
| 455 | |
| 456 | static FILE * |
| 457 | try_open (const char *name, bfd_boolean *sysrooted) |
| 458 | { |
| 459 | FILE *result; |
| 460 | |
| 461 | result = fopen (name, "r"); |
| 462 | |
| 463 | if (result != NULL) |
| 464 | *sysrooted = is_sysrooted_pathname (name); |
| 465 | |
| 466 | if (verbose) |
| 467 | { |
| 468 | if (result == NULL) |
| 469 | info_msg (_("cannot find script file %s\n"), name); |
| 470 | else |
| 471 | info_msg (_("opened script file %s\n"), name); |
| 472 | } |
| 473 | |
| 474 | return result; |
| 475 | } |
| 476 | |
| 477 | /* Return TRUE iff directory DIR contains an "ldscripts" subdirectory. */ |
| 478 | |
| 479 | static bfd_boolean |
| 480 | check_for_scripts_dir (char *dir) |
| 481 | { |
| 482 | char *buf; |
| 483 | struct stat s; |
| 484 | bfd_boolean res; |
| 485 | |
| 486 | buf = concat (dir, "/ldscripts", (const char *) NULL); |
| 487 | res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); |
| 488 | free (buf); |
| 489 | return res; |
| 490 | } |
| 491 | |
| 492 | /* Return the default directory for finding script files. |
| 493 | We look for the "ldscripts" directory in: |
| 494 | |
| 495 | SCRIPTDIR (passed from Makefile) |
| 496 | (adjusted according to the current location of the binary) |
| 497 | the dir where this program is (for using it from the build tree). */ |
| 498 | |
| 499 | static char * |
| 500 | find_scripts_dir (void) |
| 501 | { |
| 502 | char *dir; |
| 503 | |
| 504 | dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR); |
| 505 | if (dir) |
| 506 | { |
| 507 | if (check_for_scripts_dir (dir)) |
| 508 | return dir; |
| 509 | free (dir); |
| 510 | } |
| 511 | |
| 512 | dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR); |
| 513 | if (dir) |
| 514 | { |
| 515 | if (check_for_scripts_dir (dir)) |
| 516 | return dir; |
| 517 | free (dir); |
| 518 | } |
| 519 | |
| 520 | /* Look for "ldscripts" in the dir where our binary is. */ |
| 521 | dir = make_relative_prefix (program_name, ".", "."); |
| 522 | if (dir) |
| 523 | { |
| 524 | if (check_for_scripts_dir (dir)) |
| 525 | return dir; |
| 526 | free (dir); |
| 527 | } |
| 528 | |
| 529 | return NULL; |
| 530 | } |
| 531 | |
| 532 | /* If DEFAULT_ONLY is false, try to open NAME; if that fails, look for |
| 533 | it in directories specified with -L, then in the default script |
| 534 | directory. If DEFAULT_ONLY is true, the search is restricted to |
| 535 | the default script location. */ |
| 536 | |
| 537 | static FILE * |
| 538 | ldfile_find_command_file (const char *name, |
| 539 | bfd_boolean default_only, |
| 540 | bfd_boolean *sysrooted) |
| 541 | { |
| 542 | search_dirs_type *search; |
| 543 | FILE *result = NULL; |
| 544 | char *path; |
| 545 | static search_dirs_type *script_search; |
| 546 | |
| 547 | if (!default_only) |
| 548 | { |
| 549 | /* First try raw name. */ |
| 550 | result = try_open (name, sysrooted); |
| 551 | if (result != NULL) |
| 552 | return result; |
| 553 | } |
| 554 | |
| 555 | if (!script_search) |
| 556 | { |
| 557 | char *script_dir = find_scripts_dir (); |
| 558 | if (script_dir) |
| 559 | { |
| 560 | search_dirs_type **save_tail_ptr = search_tail_ptr; |
| 561 | search_tail_ptr = &script_search; |
| 562 | ldfile_add_library_path (script_dir, TRUE); |
| 563 | search_tail_ptr = save_tail_ptr; |
| 564 | } |
| 565 | } |
| 566 | |
| 567 | /* Temporarily append script_search to the path list so that the |
| 568 | paths specified with -L will be searched first. */ |
| 569 | *search_tail_ptr = script_search; |
| 570 | |
| 571 | /* Try now prefixes. */ |
| 572 | for (search = default_only ? script_search : search_head; |
| 573 | search != NULL; |
| 574 | search = search->next) |
| 575 | { |
| 576 | path = concat (search->name, slash, name, (const char *) NULL); |
| 577 | result = try_open (path, sysrooted); |
| 578 | free (path); |
| 579 | if (result) |
| 580 | break; |
| 581 | } |
| 582 | |
| 583 | /* Restore the original path list. */ |
| 584 | *search_tail_ptr = NULL; |
| 585 | |
| 586 | return result; |
| 587 | } |
| 588 | |
| 589 | enum script_open_style { |
| 590 | script_nonT, |
| 591 | script_T, |
| 592 | script_defaultT |
| 593 | }; |
| 594 | |
| 595 | struct script_name_list |
| 596 | { |
| 597 | struct script_name_list *next; |
| 598 | enum script_open_style open_how; |
| 599 | char name[1]; |
| 600 | }; |
| 601 | |
| 602 | /* Open command file NAME. */ |
| 603 | |
| 604 | static void |
| 605 | ldfile_open_command_file_1 (const char *name, enum script_open_style open_how) |
| 606 | { |
| 607 | FILE *ldlex_input_stack; |
| 608 | bfd_boolean sysrooted; |
| 609 | static struct script_name_list *processed_scripts = NULL; |
| 610 | struct script_name_list *script; |
| 611 | size_t len; |
| 612 | |
| 613 | /* PR 24576: Catch the case where the user has accidentally included |
| 614 | the same linker script twice. */ |
| 615 | for (script = processed_scripts; script != NULL; script = script->next) |
| 616 | { |
| 617 | if ((open_how != script_nonT || script->open_how != script_nonT) |
| 618 | && strcmp (name, script->name) == 0) |
| 619 | { |
| 620 | einfo (_("%F%P: error: linker script file '%s'" |
| 621 | " appears multiple times\n"), name); |
| 622 | return; |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | /* FIXME: This memory is never freed, but that should not really matter. |
| 627 | It will be released when the linker exits, and it is unlikely to ever |
| 628 | be more than a few tens of bytes. */ |
| 629 | len = strlen (name); |
| 630 | script = xmalloc (sizeof (*script) + len); |
| 631 | script->next = processed_scripts; |
| 632 | script->open_how = open_how; |
| 633 | memcpy (script->name, name, len + 1); |
| 634 | processed_scripts = script; |
| 635 | |
| 636 | ldlex_input_stack = ldfile_find_command_file (name, |
| 637 | open_how == script_defaultT, |
| 638 | &sysrooted); |
| 639 | if (ldlex_input_stack == NULL) |
| 640 | { |
| 641 | bfd_set_error (bfd_error_system_call); |
| 642 | einfo (_("%F%P: cannot open linker script file %s: %E\n"), name); |
| 643 | return; |
| 644 | } |
| 645 | |
| 646 | lex_push_file (ldlex_input_stack, name, sysrooted); |
| 647 | |
| 648 | lineno = 1; |
| 649 | |
| 650 | saved_script_handle = ldlex_input_stack; |
| 651 | } |
| 652 | |
| 653 | /* Open command file NAME in the current directory, -L directories, |
| 654 | the default script location, in that order. */ |
| 655 | |
| 656 | void |
| 657 | ldfile_open_command_file (const char *name) |
| 658 | { |
| 659 | ldfile_open_command_file_1 (name, script_nonT); |
| 660 | } |
| 661 | |
| 662 | void |
| 663 | ldfile_open_script_file (const char *name) |
| 664 | { |
| 665 | ldfile_open_command_file_1 (name, script_T); |
| 666 | } |
| 667 | |
| 668 | /* Open command file NAME at the default script location. */ |
| 669 | |
| 670 | void |
| 671 | ldfile_open_default_command_file (const char *name) |
| 672 | { |
| 673 | ldfile_open_command_file_1 (name, script_defaultT); |
| 674 | } |
| 675 | |
| 676 | void |
| 677 | ldfile_add_arch (const char *in_name) |
| 678 | { |
| 679 | char *name = xstrdup (in_name); |
| 680 | search_arch_type *new_arch |
| 681 | = (search_arch_type *) xmalloc (sizeof (search_arch_type)); |
| 682 | |
| 683 | ldfile_output_machine_name = in_name; |
| 684 | |
| 685 | new_arch->name = name; |
| 686 | new_arch->next = NULL; |
| 687 | while (*name) |
| 688 | { |
| 689 | *name = TOLOWER (*name); |
| 690 | name++; |
| 691 | } |
| 692 | *search_arch_tail_ptr = new_arch; |
| 693 | search_arch_tail_ptr = &new_arch->next; |
| 694 | |
| 695 | } |
| 696 | |
| 697 | /* Set the output architecture. */ |
| 698 | |
| 699 | void |
| 700 | ldfile_set_output_arch (const char *string, enum bfd_architecture defarch) |
| 701 | { |
| 702 | const bfd_arch_info_type *arch = bfd_scan_arch (string); |
| 703 | |
| 704 | if (arch) |
| 705 | { |
| 706 | ldfile_output_architecture = arch->arch; |
| 707 | ldfile_output_machine = arch->mach; |
| 708 | ldfile_output_machine_name = arch->printable_name; |
| 709 | } |
| 710 | else if (defarch != bfd_arch_unknown) |
| 711 | ldfile_output_architecture = defarch; |
| 712 | else |
| 713 | einfo (_("%F%P: cannot represent machine `%s'\n"), string); |
| 714 | } |