| 1 | /* Plugin support for BFD. |
| 2 | Copyright (C) 2009-2020 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 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 | |
| 24 | #if BFD_SUPPORTS_PLUGINS |
| 25 | |
| 26 | #include <assert.h> |
| 27 | #ifdef HAVE_DLFCN_H |
| 28 | #include <dlfcn.h> |
| 29 | #elif defined (HAVE_WINDOWS_H) |
| 30 | #include <windows.h> |
| 31 | #else |
| 32 | #error Unknown how to handle dynamic-load-libraries. |
| 33 | #endif |
| 34 | #include <stdarg.h> |
| 35 | #include "plugin-api.h" |
| 36 | #include "plugin.h" |
| 37 | #include "libbfd.h" |
| 38 | #include "libiberty.h" |
| 39 | #include <dirent.h> |
| 40 | |
| 41 | #if !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H) |
| 42 | |
| 43 | #define RTLD_NOW 0 /* Dummy value. */ |
| 44 | |
| 45 | static void * |
| 46 | dlopen (const char *file, int mode ATTRIBUTE_UNUSED) |
| 47 | { |
| 48 | return LoadLibrary (file); |
| 49 | } |
| 50 | |
| 51 | static void * |
| 52 | dlsym (void *handle, const char *name) |
| 53 | { |
| 54 | return GetProcAddress (handle, name); |
| 55 | } |
| 56 | |
| 57 | static int ATTRIBUTE_UNUSED |
| 58 | dlclose (void *handle) |
| 59 | { |
| 60 | FreeLibrary (handle); |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | static const char * |
| 65 | dlerror (void) |
| 66 | { |
| 67 | return "Unable to load DLL."; |
| 68 | } |
| 69 | |
| 70 | #endif /* !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H) */ |
| 71 | |
| 72 | #define bfd_plugin_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
| 73 | #define bfd_plugin_new_section_hook _bfd_generic_new_section_hook |
| 74 | #define bfd_plugin_get_section_contents _bfd_generic_get_section_contents |
| 75 | #define bfd_plugin_get_section_contents_in_window _bfd_generic_get_section_contents_in_window |
| 76 | #define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data |
| 77 | #define bfd_plugin_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data |
| 78 | #define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data |
| 79 | #define bfd_plugin_bfd_set_private_flags _bfd_generic_bfd_set_private_flags |
| 80 | #define bfd_plugin_core_file_matches_executable_p generic_core_file_matches_executable_p |
| 81 | #define bfd_plugin_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name |
| 82 | #define bfd_plugin_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false |
| 83 | #define bfd_plugin_get_lineno _bfd_nosymbols_get_lineno |
| 84 | #define bfd_plugin_find_nearest_line _bfd_nosymbols_find_nearest_line |
| 85 | #define bfd_plugin_find_line _bfd_nosymbols_find_line |
| 86 | #define bfd_plugin_find_inliner_info _bfd_nosymbols_find_inliner_info |
| 87 | #define bfd_plugin_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string |
| 88 | #define bfd_plugin_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol |
| 89 | #define bfd_plugin_read_minisymbols _bfd_generic_read_minisymbols |
| 90 | #define bfd_plugin_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
| 91 | #define bfd_plugin_set_arch_mach bfd_default_set_arch_mach |
| 92 | #define bfd_plugin_set_section_contents _bfd_generic_set_section_contents |
| 93 | #define bfd_plugin_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents |
| 94 | #define bfd_plugin_bfd_relax_section bfd_generic_relax_section |
| 95 | #define bfd_plugin_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
| 96 | #define bfd_plugin_bfd_link_add_symbols _bfd_generic_link_add_symbols |
| 97 | #define bfd_plugin_bfd_link_just_syms _bfd_generic_link_just_syms |
| 98 | #define bfd_plugin_bfd_final_link _bfd_generic_final_link |
| 99 | #define bfd_plugin_bfd_link_split_section _bfd_generic_link_split_section |
| 100 | #define bfd_plugin_bfd_gc_sections bfd_generic_gc_sections |
| 101 | #define bfd_plugin_bfd_lookup_section_flags bfd_generic_lookup_section_flags |
| 102 | #define bfd_plugin_bfd_merge_sections bfd_generic_merge_sections |
| 103 | #define bfd_plugin_bfd_is_group_section bfd_generic_is_group_section |
| 104 | #define bfd_plugin_bfd_group_name bfd_generic_group_name |
| 105 | #define bfd_plugin_bfd_discard_group bfd_generic_discard_group |
| 106 | #define bfd_plugin_section_already_linked _bfd_generic_section_already_linked |
| 107 | #define bfd_plugin_bfd_define_common_symbol bfd_generic_define_common_symbol |
| 108 | #define bfd_plugin_bfd_link_hide_symbol _bfd_generic_link_hide_symbol |
| 109 | #define bfd_plugin_bfd_define_start_stop bfd_generic_define_start_stop |
| 110 | #define bfd_plugin_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type |
| 111 | #define bfd_plugin_bfd_link_check_relocs _bfd_generic_link_check_relocs |
| 112 | |
| 113 | static enum ld_plugin_status |
| 114 | message (int level ATTRIBUTE_UNUSED, |
| 115 | const char * format, ...) |
| 116 | { |
| 117 | va_list args; |
| 118 | va_start (args, format); |
| 119 | printf ("bfd plugin: "); |
| 120 | vprintf (format, args); |
| 121 | putchar ('\n'); |
| 122 | va_end (args); |
| 123 | return LDPS_OK; |
| 124 | } |
| 125 | |
| 126 | struct plugin_list_entry |
| 127 | { |
| 128 | /* These must be initialized for each IR object with LTO wrapper. */ |
| 129 | ld_plugin_claim_file_handler claim_file; |
| 130 | ld_plugin_all_symbols_read_handler all_symbols_read; |
| 131 | ld_plugin_all_symbols_read_handler cleanup_handler; |
| 132 | char *resolution_file; |
| 133 | char *resolution_option; |
| 134 | bfd *real_bfd; |
| 135 | long real_nsyms; |
| 136 | asymbol **real_syms; |
| 137 | int lto_nsyms; |
| 138 | const struct ld_plugin_symbol *lto_syms; |
| 139 | bfd_boolean has_symbol_type; |
| 140 | |
| 141 | struct plugin_list_entry *next; |
| 142 | |
| 143 | /* These can be reused for all IR objects. */ |
| 144 | const char *plugin_name; |
| 145 | char *gcc; |
| 146 | char *lto_wrapper; |
| 147 | char *gcc_env; |
| 148 | bfd_boolean initialized; |
| 149 | }; |
| 150 | |
| 151 | static const char *plugin_program_name; |
| 152 | static int need_lto_wrapper_p; |
| 153 | |
| 154 | void |
| 155 | bfd_plugin_set_program_name (const char *program_name, |
| 156 | int need_lto_wrapper) |
| 157 | { |
| 158 | plugin_program_name = program_name; |
| 159 | need_lto_wrapper_p = need_lto_wrapper; |
| 160 | } |
| 161 | |
| 162 | /* Use GCC LTO wrapper to covert LTO IR object to the real object. */ |
| 163 | |
| 164 | static bfd_boolean |
| 165 | get_lto_wrapper (struct plugin_list_entry *plugin) |
| 166 | { |
| 167 | struct stat st; |
| 168 | const char *real_name; |
| 169 | const char *base_name; |
| 170 | size_t length; |
| 171 | const char *target_start = NULL; |
| 172 | const char *target_end = NULL; |
| 173 | size_t target_length = 0; |
| 174 | char *gcc_name; |
| 175 | char *wrapper_name; |
| 176 | char *p; |
| 177 | char dir_seperator = '\0'; |
| 178 | char *resolution_file; |
| 179 | |
| 180 | if (!need_lto_wrapper_p) |
| 181 | return FALSE; |
| 182 | |
| 183 | if (plugin->initialized) |
| 184 | { |
| 185 | if (plugin->lto_wrapper) |
| 186 | { |
| 187 | resolution_file = make_temp_file (".res"); |
| 188 | if (resolution_file) |
| 189 | { |
| 190 | plugin->resolution_file = resolution_file; |
| 191 | plugin->resolution_option = concat ("-fresolution=", |
| 192 | resolution_file, NULL); |
| 193 | return TRUE; |
| 194 | } |
| 195 | else |
| 196 | { |
| 197 | /* Something is wrong. Give up. */ |
| 198 | free (plugin->gcc); |
| 199 | free (plugin->lto_wrapper); |
| 200 | free (plugin->gcc_env); |
| 201 | plugin->gcc = NULL; |
| 202 | plugin->gcc_env = NULL; |
| 203 | plugin->lto_wrapper = NULL; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | return FALSE; |
| 208 | } |
| 209 | |
| 210 | plugin->initialized = TRUE; |
| 211 | |
| 212 | /* Check for PREFIX/libexec/gcc/TARGET/VERSION/liblto_plugin.so. */ |
| 213 | real_name = lrealpath (plugin->plugin_name); |
| 214 | base_name = lbasename (real_name); |
| 215 | |
| 216 | /* The directory length in plugin pathname. */ |
| 217 | length = base_name - real_name; |
| 218 | |
| 219 | /* Skip if there is no PREFIX. */ |
| 220 | if (!length) |
| 221 | return FALSE; |
| 222 | |
| 223 | p = (char *) real_name + length - 1; |
| 224 | if (IS_DIR_SEPARATOR (*p)) |
| 225 | { |
| 226 | int level = 0; |
| 227 | for (; p != real_name; p--) |
| 228 | if (IS_DIR_SEPARATOR (*p)) |
| 229 | { |
| 230 | level++; |
| 231 | if (level == 2) |
| 232 | target_end = p; |
| 233 | else if (level == 3) |
| 234 | { |
| 235 | target_start = p + 1; |
| 236 | target_length = target_end - target_start; |
| 237 | } |
| 238 | else if (level == 5) |
| 239 | { |
| 240 | dir_seperator = *p; |
| 241 | break; |
| 242 | } |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | /* Skip if there is no TARGET nor PREFIX. */ |
| 247 | if (!target_length || !dir_seperator) |
| 248 | return FALSE; |
| 249 | |
| 250 | #ifdef HAVE_EXECUTABLE_SUFFIX |
| 251 | # define GCC_EXECUTABLE "gcc" EXECUTABLE_SUFFIX |
| 252 | # define LTO_WRAPPER_EXECUTABLE "lto-wrapper" EXECUTABLE_SUFFIX |
| 253 | #else |
| 254 | # define GCC_EXECUTABLE "gcc" |
| 255 | # define LTO_WRAPPER_EXECUTABLE "lto-wrapper" |
| 256 | #endif |
| 257 | gcc_name = bfd_malloc (length + target_length |
| 258 | + sizeof (GCC_EXECUTABLE)); |
| 259 | if (gcc_name == NULL) |
| 260 | return FALSE; |
| 261 | memcpy (gcc_name, real_name, length); |
| 262 | |
| 263 | /* Get PREFIX/bin/. */ |
| 264 | p += gcc_name - real_name; |
| 265 | memcpy (p + 1, "bin", 3); |
| 266 | p[4] = dir_seperator; |
| 267 | |
| 268 | /* Try PREFIX/bin/TARGET-gcc first. */ |
| 269 | memcpy (p + 5, target_start, target_length); |
| 270 | p[5 + target_length] = '-'; |
| 271 | memcpy (p + 5 + target_length + 1, GCC_EXECUTABLE, |
| 272 | sizeof (GCC_EXECUTABLE)); |
| 273 | if (stat (gcc_name, &st) != 0 || !S_ISREG (st.st_mode)) |
| 274 | { |
| 275 | /* Then try PREFIX/bin/gcc. */ |
| 276 | memcpy (p + 5, GCC_EXECUTABLE, sizeof (GCC_EXECUTABLE)); |
| 277 | if (stat (gcc_name, &st) != 0 || !S_ISREG (st.st_mode)) |
| 278 | { |
| 279 | free (gcc_name); |
| 280 | return FALSE; |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | /* lto-wrapper should be in the same directory with LTO plugin. */ |
| 285 | wrapper_name = bfd_malloc (length + sizeof (LTO_WRAPPER_EXECUTABLE)); |
| 286 | if (wrapper_name == NULL) |
| 287 | { |
| 288 | free (gcc_name); |
| 289 | return FALSE; |
| 290 | } |
| 291 | memcpy (wrapper_name, real_name, length); |
| 292 | memcpy (wrapper_name + length, LTO_WRAPPER_EXECUTABLE, |
| 293 | sizeof (LTO_WRAPPER_EXECUTABLE)); |
| 294 | if (stat (wrapper_name, &st) == 0 && S_ISREG (st.st_mode)) |
| 295 | { |
| 296 | resolution_file = make_temp_file (".res"); |
| 297 | if (resolution_file) |
| 298 | { |
| 299 | plugin->gcc = gcc_name; |
| 300 | plugin->lto_wrapper = wrapper_name; |
| 301 | plugin->gcc_env = concat ("COLLECT_GCC=", gcc_name, NULL); |
| 302 | plugin->resolution_file = resolution_file; |
| 303 | plugin->resolution_option = concat ("-fresolution=", |
| 304 | resolution_file, NULL); |
| 305 | return TRUE; |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | free (gcc_name); |
| 310 | free (wrapper_name); |
| 311 | return FALSE; |
| 312 | } |
| 313 | |
| 314 | /* Set environment variables for GCC LTO wrapper to covert LTO IR |
| 315 | object to the real object. */ |
| 316 | |
| 317 | static int |
| 318 | setup_lto_wrapper_env (struct plugin_list_entry *plugin) |
| 319 | { |
| 320 | return (putenv (plugin->gcc_env) |
| 321 | || putenv ("COLLECT_GCC_OPTIONS=")); |
| 322 | } |
| 323 | |
| 324 | static struct plugin_list_entry *plugin_list = NULL; |
| 325 | static struct plugin_list_entry *current_plugin = NULL; |
| 326 | |
| 327 | /* Register a claim-file handler. */ |
| 328 | |
| 329 | static enum ld_plugin_status |
| 330 | register_claim_file (ld_plugin_claim_file_handler handler) |
| 331 | { |
| 332 | current_plugin->claim_file = handler; |
| 333 | return LDPS_OK; |
| 334 | } |
| 335 | |
| 336 | /* Register an all-symbols-read handler. */ |
| 337 | |
| 338 | static enum ld_plugin_status |
| 339 | register_all_symbols_read (ld_plugin_all_symbols_read_handler handler) |
| 340 | { |
| 341 | current_plugin->all_symbols_read = handler; |
| 342 | return LDPS_OK; |
| 343 | } |
| 344 | |
| 345 | /* Register a cleanup handler. */ |
| 346 | |
| 347 | static enum ld_plugin_status |
| 348 | register_cleanup (ld_plugin_all_symbols_read_handler handler) |
| 349 | { |
| 350 | current_plugin->cleanup_handler = handler; |
| 351 | return LDPS_OK; |
| 352 | } |
| 353 | |
| 354 | /* Get the symbol resolution info for a plugin-claimed input file. */ |
| 355 | |
| 356 | static enum ld_plugin_status |
| 357 | get_symbols (const void *handle ATTRIBUTE_UNUSED, int nsyms, |
| 358 | struct ld_plugin_symbol *syms) |
| 359 | { |
| 360 | if (syms) |
| 361 | { |
| 362 | int n; |
| 363 | for (n = 0; n < nsyms; n++) |
| 364 | { |
| 365 | switch (syms[n].def) |
| 366 | { |
| 367 | default: |
| 368 | BFD_ASSERT (0); |
| 369 | break; |
| 370 | case LDPK_UNDEF: |
| 371 | case LDPK_WEAKUNDEF: |
| 372 | syms[n].resolution = LDPR_UNDEF; |
| 373 | break; |
| 374 | case LDPK_DEF: |
| 375 | case LDPK_WEAKDEF: |
| 376 | case LDPK_COMMON: |
| 377 | /* Tell plugin that LTO symbol has references from regular |
| 378 | object code. */ |
| 379 | syms[n].resolution = LDPR_PREVAILING_DEF; |
| 380 | break; |
| 381 | } |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | return LDPS_OK; |
| 386 | } |
| 387 | |
| 388 | /* Add a new (real) input file generated by a plugin. */ |
| 389 | |
| 390 | static enum ld_plugin_status |
| 391 | add_input_file (const char *pathname) |
| 392 | { |
| 393 | /* Get symbols from the real LTO object. */ |
| 394 | char **matching; |
| 395 | long real_symsize; |
| 396 | long real_nsyms; |
| 397 | asymbol **real_syms; |
| 398 | int lto_nsyms; |
| 399 | bfd_boolean lto_symbol_found = FALSE; |
| 400 | const struct ld_plugin_symbol *lto_syms; |
| 401 | bfd *rbfd; |
| 402 | int i, j; |
| 403 | |
| 404 | rbfd = bfd_openr (pathname, NULL); |
| 405 | if (!bfd_check_format_matches (rbfd, bfd_object, &matching)) |
| 406 | BFD_ASSERT (0); |
| 407 | |
| 408 | real_symsize = bfd_get_symtab_upper_bound (rbfd); |
| 409 | if (real_symsize < 0) |
| 410 | BFD_ASSERT (0); |
| 411 | |
| 412 | real_syms = (asymbol **) bfd_malloc (real_symsize); |
| 413 | if (real_syms) |
| 414 | { |
| 415 | real_nsyms = bfd_canonicalize_symtab (rbfd, real_syms); |
| 416 | if (real_nsyms < 0) |
| 417 | BFD_ASSERT (0); |
| 418 | |
| 419 | /* NB: LTO plugin may generate more than one real object from one |
| 420 | LTO IR object. We use the one which contains LTO symbols. */ |
| 421 | lto_syms = current_plugin->lto_syms; |
| 422 | lto_nsyms = current_plugin->lto_nsyms; |
| 423 | for (i = 0; i < lto_nsyms; i++) |
| 424 | for (j = 0; j < real_nsyms; j++) |
| 425 | if (real_syms[j]->name |
| 426 | && strcmp (lto_syms[i].name, real_syms[j]->name) == 0) |
| 427 | { |
| 428 | lto_symbol_found = TRUE; |
| 429 | break; |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | if (lto_symbol_found) |
| 434 | { |
| 435 | current_plugin->real_nsyms = real_nsyms; |
| 436 | current_plugin->real_syms = real_syms; |
| 437 | /* NB: We can't close RBFD which own the real symbol info. */ |
| 438 | current_plugin->real_bfd = rbfd; |
| 439 | } |
| 440 | else |
| 441 | { |
| 442 | bfd_close (rbfd); |
| 443 | free (real_syms); |
| 444 | } |
| 445 | |
| 446 | return LDPS_OK; |
| 447 | } |
| 448 | |
| 449 | static enum ld_plugin_status |
| 450 | add_symbols (void * handle, |
| 451 | int nsyms, |
| 452 | const struct ld_plugin_symbol * syms) |
| 453 | { |
| 454 | bfd *abfd = handle; |
| 455 | struct plugin_data_struct *plugin_data = |
| 456 | bfd_alloc (abfd, sizeof (plugin_data_struct)); |
| 457 | |
| 458 | if (plugin_data) |
| 459 | { |
| 460 | struct ld_plugin_symbol *sym_info; |
| 461 | char *strtab; |
| 462 | size_t sym_info_size, name_length; |
| 463 | int i; |
| 464 | |
| 465 | memset (plugin_data, 0, sizeof (*plugin_data)); |
| 466 | |
| 467 | abfd->tdata.plugin_data = plugin_data; |
| 468 | |
| 469 | /* NB: LTO symbols are owned by LTO plugin. Create a copy so |
| 470 | that we can use it in bfd_plugin_canonicalize_symtab. */ |
| 471 | sym_info_size = nsyms * sizeof (*syms); |
| 472 | |
| 473 | /* Allocate a string table */ |
| 474 | for (i = 0; i < nsyms; i++) |
| 475 | sym_info_size += strlen (syms[i].name) + 1; |
| 476 | |
| 477 | sym_info = bfd_alloc (abfd, sym_info_size); |
| 478 | if (sym_info) |
| 479 | { |
| 480 | /* Copy symbol table. */ |
| 481 | memcpy (sym_info, syms, nsyms * sizeof (*syms)); |
| 482 | |
| 483 | /* Copy symbol names in symbol table. */ |
| 484 | strtab = (char *) (sym_info + nsyms); |
| 485 | for (i = 0; i < nsyms; i++) |
| 486 | { |
| 487 | name_length = strlen (syms[i].name); |
| 488 | memcpy (strtab, syms[i].name, name_length + 1); |
| 489 | sym_info[i].name = strtab; |
| 490 | strtab += name_length + 1; |
| 491 | } |
| 492 | |
| 493 | plugin_data->nsyms = nsyms; |
| 494 | plugin_data->syms = sym_info; |
| 495 | |
| 496 | current_plugin->lto_nsyms = nsyms; |
| 497 | current_plugin->lto_syms = sym_info; |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | if (nsyms != 0) |
| 502 | abfd->flags |= HAS_SYMS; |
| 503 | |
| 504 | return LDPS_OK; |
| 505 | } |
| 506 | |
| 507 | static enum ld_plugin_status |
| 508 | add_symbols_v2 (void *handle, int nsyms, |
| 509 | const struct ld_plugin_symbol *syms) |
| 510 | { |
| 511 | current_plugin->has_symbol_type = TRUE; |
| 512 | return add_symbols (handle, nsyms, syms); |
| 513 | } |
| 514 | |
| 515 | int |
| 516 | bfd_plugin_open_input (bfd *ibfd, struct ld_plugin_input_file *file) |
| 517 | { |
| 518 | bfd *iobfd; |
| 519 | |
| 520 | iobfd = ibfd; |
| 521 | while (iobfd->my_archive |
| 522 | && !bfd_is_thin_archive (iobfd->my_archive)) |
| 523 | iobfd = iobfd->my_archive; |
| 524 | file->name = iobfd->filename; |
| 525 | |
| 526 | if (!iobfd->iostream && !bfd_open_file (iobfd)) |
| 527 | return 0; |
| 528 | |
| 529 | /* The plugin API expects that the file descriptor won't be closed |
| 530 | and reused as done by the bfd file cache. So open it again. |
| 531 | dup isn't good enough. plugin IO uses lseek/read while BFD uses |
| 532 | fseek/fread. It isn't wise to mix the unistd and stdio calls on |
| 533 | the same underlying file descriptor. */ |
| 534 | file->fd = open (file->name, O_RDONLY | O_BINARY); |
| 535 | if (file->fd < 0) |
| 536 | return 0; |
| 537 | |
| 538 | if (iobfd == ibfd) |
| 539 | { |
| 540 | struct stat stat_buf; |
| 541 | |
| 542 | if (fstat (file->fd, &stat_buf)) |
| 543 | { |
| 544 | close(file->fd); |
| 545 | return 0; |
| 546 | } |
| 547 | |
| 548 | file->offset = 0; |
| 549 | file->filesize = stat_buf.st_size; |
| 550 | } |
| 551 | else |
| 552 | { |
| 553 | file->offset = ibfd->origin; |
| 554 | file->filesize = arelt_size (ibfd); |
| 555 | } |
| 556 | return 1; |
| 557 | } |
| 558 | |
| 559 | static int |
| 560 | try_claim (bfd *abfd) |
| 561 | { |
| 562 | int claimed = 0; |
| 563 | struct ld_plugin_input_file file; |
| 564 | |
| 565 | file.handle = abfd; |
| 566 | if (bfd_plugin_open_input (abfd, &file) |
| 567 | && current_plugin->claim_file) |
| 568 | { |
| 569 | current_plugin->claim_file (&file, &claimed); |
| 570 | if (claimed) |
| 571 | { |
| 572 | if (current_plugin->all_symbols_read |
| 573 | && !current_plugin->has_symbol_type) |
| 574 | { |
| 575 | struct plugin_data_struct *plugin_data |
| 576 | = abfd->tdata.plugin_data; |
| 577 | if (plugin_data) |
| 578 | { |
| 579 | /* Get real symbols from LTO wrapper. */ |
| 580 | current_plugin->all_symbols_read (); |
| 581 | |
| 582 | /* Copy real symbols to plugin_data. */ |
| 583 | plugin_data->real_bfd = current_plugin->real_bfd; |
| 584 | plugin_data->real_nsyms = current_plugin->real_nsyms; |
| 585 | plugin_data->real_syms = current_plugin->real_syms; |
| 586 | |
| 587 | /* Clean up LTO plugin. */ |
| 588 | if (current_plugin->cleanup_handler) |
| 589 | current_plugin->cleanup_handler (); |
| 590 | } |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | close (file.fd); |
| 595 | } |
| 596 | |
| 597 | if (current_plugin->lto_wrapper) |
| 598 | { |
| 599 | /* Clean up for LTO wrapper. NB: Resolution file and option |
| 600 | have been created regardless if an IR object is claimed or |
| 601 | not. */ |
| 602 | unlink (current_plugin->resolution_file); |
| 603 | free (current_plugin->resolution_option); |
| 604 | } |
| 605 | |
| 606 | return claimed; |
| 607 | } |
| 608 | |
| 609 | static int |
| 610 | try_load_plugin (const char *pname, |
| 611 | struct plugin_list_entry *plugin_list_iter, |
| 612 | bfd *abfd, bfd_boolean build_list_p) |
| 613 | { |
| 614 | void *plugin_handle; |
| 615 | struct ld_plugin_tv tv[13]; |
| 616 | int i; |
| 617 | ld_plugin_onload onload; |
| 618 | enum ld_plugin_status status; |
| 619 | int result = 0; |
| 620 | |
| 621 | /* NB: Each object is independent. Reuse the previous plugin from |
| 622 | the last run will lead to wrong result. */ |
| 623 | if (current_plugin) |
| 624 | memset (current_plugin, 0, |
| 625 | offsetof (struct plugin_list_entry, next)); |
| 626 | |
| 627 | if (plugin_list_iter) |
| 628 | pname = plugin_list_iter->plugin_name; |
| 629 | |
| 630 | plugin_handle = dlopen (pname, RTLD_NOW); |
| 631 | if (!plugin_handle) |
| 632 | { |
| 633 | _bfd_error_handler ("%s\n", dlerror ()); |
| 634 | return 0; |
| 635 | } |
| 636 | |
| 637 | if (plugin_list_iter == NULL) |
| 638 | { |
| 639 | size_t length_plugin_name = strlen (pname) + 1; |
| 640 | char *plugin_name = bfd_malloc (length_plugin_name); |
| 641 | if (plugin_name == NULL) |
| 642 | goto short_circuit; |
| 643 | plugin_list_iter = bfd_malloc (sizeof *plugin_list_iter); |
| 644 | if (plugin_list_iter == NULL) |
| 645 | { |
| 646 | free (plugin_name); |
| 647 | goto short_circuit; |
| 648 | } |
| 649 | /* Make a copy of PNAME since PNAME from load_plugin () will be |
| 650 | freed. */ |
| 651 | memcpy (plugin_name, pname, length_plugin_name); |
| 652 | memset (plugin_list_iter, 0, sizeof (*plugin_list_iter)); |
| 653 | plugin_list_iter->plugin_name = plugin_name; |
| 654 | plugin_list_iter->next = plugin_list; |
| 655 | plugin_list = plugin_list_iter; |
| 656 | } |
| 657 | |
| 658 | current_plugin = plugin_list_iter; |
| 659 | if (build_list_p) |
| 660 | goto short_circuit; |
| 661 | |
| 662 | onload = dlsym (plugin_handle, "onload"); |
| 663 | if (!onload) |
| 664 | goto short_circuit; |
| 665 | |
| 666 | i = 0; |
| 667 | tv[i].tv_tag = LDPT_MESSAGE; |
| 668 | tv[i].tv_u.tv_message = message; |
| 669 | |
| 670 | ++i; |
| 671 | tv[i].tv_tag = LDPT_REGISTER_CLAIM_FILE_HOOK; |
| 672 | tv[i].tv_u.tv_register_claim_file = register_claim_file; |
| 673 | |
| 674 | ++i; |
| 675 | tv[i].tv_tag = LDPT_ADD_SYMBOLS; |
| 676 | tv[i].tv_u.tv_add_symbols = add_symbols; |
| 677 | |
| 678 | ++i; |
| 679 | tv[i].tv_tag = LDPT_ADD_SYMBOLS_V2; |
| 680 | tv[i].tv_u.tv_add_symbols = add_symbols_v2; |
| 681 | |
| 682 | if (get_lto_wrapper (plugin_list_iter)) |
| 683 | { |
| 684 | ++i; |
| 685 | tv[i].tv_tag = LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK; |
| 686 | tv[i].tv_u.tv_register_all_symbols_read = register_all_symbols_read; |
| 687 | |
| 688 | ++i; |
| 689 | tv[i].tv_tag = LDPT_REGISTER_CLEANUP_HOOK; |
| 690 | tv[i].tv_u.tv_register_cleanup = register_cleanup; |
| 691 | |
| 692 | ++i; |
| 693 | tv[i].tv_tag = LDPT_GET_SYMBOLS; |
| 694 | tv[i].tv_u.tv_get_symbols = get_symbols; |
| 695 | |
| 696 | ++i; |
| 697 | tv[i].tv_tag = LDPT_GET_SYMBOLS_V2; |
| 698 | tv[i].tv_u.tv_get_symbols = get_symbols; |
| 699 | |
| 700 | ++i; |
| 701 | tv[i].tv_tag = LDPT_OPTION; |
| 702 | tv[i].tv_u.tv_string = plugin_list_iter->lto_wrapper; |
| 703 | |
| 704 | ++i; |
| 705 | tv[i].tv_tag = LDPT_OPTION; |
| 706 | tv[i].tv_u.tv_string = plugin_list_iter->resolution_option; |
| 707 | |
| 708 | ++i; |
| 709 | tv[i].tv_tag = LDPT_LINKER_OUTPUT; |
| 710 | tv[i].tv_u.tv_val = LDPO_EXEC; |
| 711 | |
| 712 | ++i; |
| 713 | tv[i].tv_tag = LDPT_ADD_INPUT_FILE; |
| 714 | tv[i].tv_u.tv_add_input_file = add_input_file; |
| 715 | } |
| 716 | |
| 717 | ++i; |
| 718 | tv[i].tv_tag = LDPT_NULL; |
| 719 | tv[i].tv_u.tv_val = 0; |
| 720 | |
| 721 | /* LTO plugin will call handler hooks to set up plugin handlers. */ |
| 722 | status = (*onload)(tv); |
| 723 | |
| 724 | if (status != LDPS_OK) |
| 725 | goto short_circuit; |
| 726 | |
| 727 | if (current_plugin->lto_wrapper |
| 728 | && setup_lto_wrapper_env (current_plugin)) |
| 729 | goto short_circuit; |
| 730 | |
| 731 | abfd->plugin_format = bfd_plugin_no; |
| 732 | |
| 733 | if (!current_plugin->claim_file) |
| 734 | goto short_circuit; |
| 735 | |
| 736 | if (!try_claim (abfd)) |
| 737 | goto short_circuit; |
| 738 | |
| 739 | abfd->plugin_format = bfd_plugin_yes; |
| 740 | result = 1; |
| 741 | |
| 742 | short_circuit: |
| 743 | dlclose (plugin_handle); |
| 744 | return result; |
| 745 | } |
| 746 | |
| 747 | /* There may be plugin libraries in lib/bfd-plugins. */ |
| 748 | static int has_plugin_list = -1; |
| 749 | |
| 750 | static bfd_cleanup (*ld_plugin_object_p) (bfd *); |
| 751 | |
| 752 | static const char *plugin_name; |
| 753 | |
| 754 | void |
| 755 | bfd_plugin_set_plugin (const char *p) |
| 756 | { |
| 757 | plugin_name = p; |
| 758 | } |
| 759 | |
| 760 | /* Return TRUE if a plugin library is used. */ |
| 761 | |
| 762 | bfd_boolean |
| 763 | bfd_plugin_specified_p (void) |
| 764 | { |
| 765 | return plugin_list != NULL; |
| 766 | } |
| 767 | |
| 768 | /* Return TRUE if ABFD can be claimed by linker LTO plugin. */ |
| 769 | |
| 770 | bfd_boolean |
| 771 | bfd_link_plugin_object_p (bfd *abfd) |
| 772 | { |
| 773 | if (ld_plugin_object_p) |
| 774 | return ld_plugin_object_p (abfd) != NULL; |
| 775 | return FALSE; |
| 776 | } |
| 777 | |
| 778 | extern const bfd_target plugin_vec; |
| 779 | |
| 780 | /* Return TRUE if TARGET is a pointer to plugin_vec. */ |
| 781 | |
| 782 | bfd_boolean |
| 783 | bfd_plugin_target_p (const bfd_target *target) |
| 784 | { |
| 785 | return target == &plugin_vec; |
| 786 | } |
| 787 | |
| 788 | /* Register OBJECT_P to be used by bfd_plugin_object_p. */ |
| 789 | |
| 790 | void |
| 791 | register_ld_plugin_object_p (bfd_cleanup (*object_p) (bfd *)) |
| 792 | { |
| 793 | ld_plugin_object_p = object_p; |
| 794 | } |
| 795 | |
| 796 | static void |
| 797 | build_plugin_list (bfd *abfd) |
| 798 | { |
| 799 | /* The intent was to search ${libdir}/bfd-plugins for plugins, but |
| 800 | unfortunately the original implementation wasn't precisely that |
| 801 | when configuring binutils using --libdir. Search in the proper |
| 802 | path first, then the old one for backwards compatibility. */ |
| 803 | static const char *path[] |
| 804 | = { LIBDIR "/bfd-plugins", BINDIR "/../lib/bfd-plugins" }; |
| 805 | struct stat last_st; |
| 806 | unsigned int i; |
| 807 | |
| 808 | if (has_plugin_list >= 0) |
| 809 | return; |
| 810 | |
| 811 | /* Try not to search the same dir twice, by looking at st_dev and |
| 812 | st_ino for the dir. If we are on a file system that always sets |
| 813 | st_ino to zero or the actual st_ino is zero we might waste some |
| 814 | time, but that doesn't matter too much. */ |
| 815 | last_st.st_dev = 0; |
| 816 | last_st.st_ino = 0; |
| 817 | for (i = 0; i < sizeof (path) / sizeof (path[0]); i++) |
| 818 | { |
| 819 | char *plugin_dir = make_relative_prefix (plugin_program_name, |
| 820 | BINDIR, |
| 821 | path[i]); |
| 822 | if (plugin_dir) |
| 823 | { |
| 824 | struct stat st; |
| 825 | DIR *d; |
| 826 | |
| 827 | if (stat (plugin_dir, &st) == 0 |
| 828 | && S_ISDIR (st.st_mode) |
| 829 | && !(last_st.st_dev == st.st_dev |
| 830 | && last_st.st_ino == st.st_ino |
| 831 | && st.st_ino != 0) |
| 832 | && (d = opendir (plugin_dir)) != NULL) |
| 833 | { |
| 834 | struct dirent *ent; |
| 835 | |
| 836 | last_st.st_dev = st.st_dev; |
| 837 | last_st.st_ino = st.st_ino; |
| 838 | while ((ent = readdir (d)) != NULL) |
| 839 | { |
| 840 | char *full_name; |
| 841 | |
| 842 | full_name = concat (plugin_dir, "/", ent->d_name, NULL); |
| 843 | if (stat (full_name, &st) == 0 && S_ISREG (st.st_mode)) |
| 844 | try_load_plugin (full_name, NULL, abfd, TRUE); |
| 845 | free (full_name); |
| 846 | } |
| 847 | closedir (d); |
| 848 | } |
| 849 | free (plugin_dir); |
| 850 | } |
| 851 | } |
| 852 | |
| 853 | has_plugin_list = plugin_list != NULL; |
| 854 | } |
| 855 | |
| 856 | static int |
| 857 | load_plugin (bfd *abfd) |
| 858 | { |
| 859 | struct plugin_list_entry *plugin_list_iter; |
| 860 | |
| 861 | if (plugin_name) |
| 862 | return try_load_plugin (plugin_name, plugin_list, abfd, FALSE); |
| 863 | |
| 864 | if (plugin_program_name == NULL) |
| 865 | return 0; |
| 866 | |
| 867 | build_plugin_list (abfd); |
| 868 | |
| 869 | for (plugin_list_iter = plugin_list; |
| 870 | plugin_list_iter; |
| 871 | plugin_list_iter = plugin_list_iter->next) |
| 872 | if (try_load_plugin (NULL, plugin_list_iter, abfd, FALSE)) |
| 873 | return 1; |
| 874 | |
| 875 | return 0; |
| 876 | } |
| 877 | |
| 878 | |
| 879 | static bfd_cleanup |
| 880 | bfd_plugin_object_p (bfd *abfd) |
| 881 | { |
| 882 | if (ld_plugin_object_p) |
| 883 | return ld_plugin_object_p (abfd); |
| 884 | |
| 885 | if (abfd->plugin_format == bfd_plugin_unknown && !load_plugin (abfd)) |
| 886 | return NULL; |
| 887 | |
| 888 | return abfd->plugin_format == bfd_plugin_yes ? _bfd_no_cleanup : NULL; |
| 889 | } |
| 890 | |
| 891 | /* Copy any private info we understand from the input bfd |
| 892 | to the output bfd. */ |
| 893 | |
| 894 | static bfd_boolean |
| 895 | bfd_plugin_bfd_copy_private_bfd_data (bfd *ibfd ATTRIBUTE_UNUSED, |
| 896 | bfd *obfd ATTRIBUTE_UNUSED) |
| 897 | { |
| 898 | BFD_ASSERT (0); |
| 899 | return TRUE; |
| 900 | } |
| 901 | |
| 902 | /* Copy any private info we understand from the input section |
| 903 | to the output section. */ |
| 904 | |
| 905 | static bfd_boolean |
| 906 | bfd_plugin_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED, |
| 907 | asection *isection ATTRIBUTE_UNUSED, |
| 908 | bfd *obfd ATTRIBUTE_UNUSED, |
| 909 | asection *osection ATTRIBUTE_UNUSED) |
| 910 | { |
| 911 | BFD_ASSERT (0); |
| 912 | return TRUE; |
| 913 | } |
| 914 | |
| 915 | /* Copy any private info we understand from the input symbol |
| 916 | to the output symbol. */ |
| 917 | |
| 918 | static bfd_boolean |
| 919 | bfd_plugin_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED, |
| 920 | asymbol *isymbol ATTRIBUTE_UNUSED, |
| 921 | bfd *obfd ATTRIBUTE_UNUSED, |
| 922 | asymbol *osymbol ATTRIBUTE_UNUSED) |
| 923 | { |
| 924 | BFD_ASSERT (0); |
| 925 | return TRUE; |
| 926 | } |
| 927 | |
| 928 | static bfd_boolean |
| 929 | bfd_plugin_bfd_print_private_bfd_data (bfd *abfd ATTRIBUTE_UNUSED, PTR ptr ATTRIBUTE_UNUSED) |
| 930 | { |
| 931 | BFD_ASSERT (0); |
| 932 | return TRUE; |
| 933 | } |
| 934 | |
| 935 | static char * |
| 936 | bfd_plugin_core_file_failing_command (bfd *abfd ATTRIBUTE_UNUSED) |
| 937 | { |
| 938 | BFD_ASSERT (0); |
| 939 | return NULL; |
| 940 | } |
| 941 | |
| 942 | static int |
| 943 | bfd_plugin_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED) |
| 944 | { |
| 945 | BFD_ASSERT (0); |
| 946 | return 0; |
| 947 | } |
| 948 | |
| 949 | static int |
| 950 | bfd_plugin_core_file_pid (bfd *abfd ATTRIBUTE_UNUSED) |
| 951 | { |
| 952 | BFD_ASSERT (0); |
| 953 | return 0; |
| 954 | } |
| 955 | |
| 956 | static long |
| 957 | bfd_plugin_get_symtab_upper_bound (bfd *abfd) |
| 958 | { |
| 959 | struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data; |
| 960 | long nsyms = plugin_data->nsyms; |
| 961 | |
| 962 | BFD_ASSERT (nsyms >= 0); |
| 963 | |
| 964 | return ((nsyms + 1) * sizeof (asymbol *)); |
| 965 | } |
| 966 | |
| 967 | static flagword |
| 968 | convert_flags (const struct ld_plugin_symbol *sym) |
| 969 | { |
| 970 | switch (sym->def) |
| 971 | { |
| 972 | case LDPK_DEF: |
| 973 | case LDPK_COMMON: |
| 974 | case LDPK_UNDEF: |
| 975 | return BSF_GLOBAL; |
| 976 | |
| 977 | case LDPK_WEAKUNDEF: |
| 978 | case LDPK_WEAKDEF: |
| 979 | return BSF_GLOBAL | BSF_WEAK; |
| 980 | |
| 981 | default: |
| 982 | BFD_ASSERT (0); |
| 983 | return 0; |
| 984 | } |
| 985 | } |
| 986 | |
| 987 | static long |
| 988 | bfd_plugin_canonicalize_symtab (bfd *abfd, |
| 989 | asymbol **alocation) |
| 990 | { |
| 991 | struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data; |
| 992 | long nsyms = plugin_data->nsyms; |
| 993 | const struct ld_plugin_symbol *syms = plugin_data->syms; |
| 994 | static asection fake_text_section |
| 995 | = BFD_FAKE_SECTION (fake_text_section, NULL, "plug", 0, |
| 996 | SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS); |
| 997 | static asection fake_data_section |
| 998 | = BFD_FAKE_SECTION (fake_data_section, NULL, "plug", 0, |
| 999 | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS); |
| 1000 | static asection fake_bss_section |
| 1001 | = BFD_FAKE_SECTION (fake_bss_section, NULL, "plug", 0, |
| 1002 | SEC_ALLOC); |
| 1003 | static asection fake_common_section |
| 1004 | = BFD_FAKE_SECTION (fake_common_section, NULL, "plug", 0, SEC_IS_COMMON); |
| 1005 | int i, j; |
| 1006 | long real_nsyms; |
| 1007 | asymbol **real_syms; |
| 1008 | |
| 1009 | real_syms = plugin_data->real_syms; |
| 1010 | if (real_syms) |
| 1011 | real_nsyms = plugin_data->real_nsyms; |
| 1012 | else |
| 1013 | real_nsyms = 0; |
| 1014 | |
| 1015 | for (i = 0; i < nsyms; i++) |
| 1016 | { |
| 1017 | asymbol *s = bfd_alloc (abfd, sizeof (asymbol)); |
| 1018 | |
| 1019 | BFD_ASSERT (s); |
| 1020 | alocation[i] = s; |
| 1021 | |
| 1022 | s->the_bfd = abfd; |
| 1023 | s->name = syms[i].name; |
| 1024 | s->value = 0; |
| 1025 | s->flags = convert_flags (&syms[i]); |
| 1026 | switch (syms[i].def) |
| 1027 | { |
| 1028 | case LDPK_COMMON: |
| 1029 | s->section = &fake_common_section; |
| 1030 | break; |
| 1031 | case LDPK_UNDEF: |
| 1032 | case LDPK_WEAKUNDEF: |
| 1033 | s->section = bfd_und_section_ptr; |
| 1034 | break; |
| 1035 | case LDPK_DEF: |
| 1036 | case LDPK_WEAKDEF: |
| 1037 | if (current_plugin->has_symbol_type) |
| 1038 | switch (syms[i].symbol_type) |
| 1039 | { |
| 1040 | case LDST_UNKNOWN: |
| 1041 | /* What is the best fake section for LDST_UNKNOWN? */ |
| 1042 | case LDST_FUNCTION: |
| 1043 | s->section = &fake_text_section; |
| 1044 | break; |
| 1045 | case LDST_VARIABLE: |
| 1046 | if (syms[i].section_kind == LDSSK_BSS) |
| 1047 | s->section = &fake_bss_section; |
| 1048 | else |
| 1049 | s->section = &fake_data_section; |
| 1050 | break; |
| 1051 | } |
| 1052 | else |
| 1053 | { |
| 1054 | s->section = &fake_text_section; |
| 1055 | if (real_nsyms) |
| 1056 | /* Use real LTO symbols if possible. */ |
| 1057 | for (j = 0; j < real_nsyms; j++) |
| 1058 | if (real_syms[j]->name |
| 1059 | && strcmp (syms[i].name, real_syms[j]->name) == 0) |
| 1060 | { |
| 1061 | s->section = real_syms[j]->section; |
| 1062 | break; |
| 1063 | } |
| 1064 | } |
| 1065 | break; |
| 1066 | default: |
| 1067 | BFD_ASSERT (0); |
| 1068 | } |
| 1069 | |
| 1070 | s->udata.p = (void *) &syms[i]; |
| 1071 | } |
| 1072 | |
| 1073 | return nsyms; |
| 1074 | } |
| 1075 | |
| 1076 | static void |
| 1077 | bfd_plugin_print_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
| 1078 | PTR afile ATTRIBUTE_UNUSED, |
| 1079 | asymbol *symbol ATTRIBUTE_UNUSED, |
| 1080 | bfd_print_symbol_type how ATTRIBUTE_UNUSED) |
| 1081 | { |
| 1082 | BFD_ASSERT (0); |
| 1083 | } |
| 1084 | |
| 1085 | static void |
| 1086 | bfd_plugin_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
| 1087 | asymbol *symbol, |
| 1088 | symbol_info *ret) |
| 1089 | { |
| 1090 | bfd_symbol_info (symbol, ret); |
| 1091 | } |
| 1092 | |
| 1093 | /* Make an empty symbol. */ |
| 1094 | |
| 1095 | static asymbol * |
| 1096 | bfd_plugin_make_empty_symbol (bfd *abfd) |
| 1097 | { |
| 1098 | asymbol *new_symbol = bfd_zalloc (abfd, sizeof (asymbol)); |
| 1099 | if (new_symbol == NULL) |
| 1100 | return new_symbol; |
| 1101 | new_symbol->the_bfd = abfd; |
| 1102 | return new_symbol; |
| 1103 | } |
| 1104 | |
| 1105 | static int |
| 1106 | bfd_plugin_sizeof_headers (bfd *a ATTRIBUTE_UNUSED, |
| 1107 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 1108 | { |
| 1109 | BFD_ASSERT (0); |
| 1110 | return 0; |
| 1111 | } |
| 1112 | |
| 1113 | static bfd_boolean |
| 1114 | bfd_plugin_close_and_cleanup (bfd *abfd) |
| 1115 | { |
| 1116 | struct plugin_data_struct *plugin_data; |
| 1117 | |
| 1118 | if (abfd->format != bfd_archive |
| 1119 | && (plugin_data = abfd->tdata.plugin_data)) |
| 1120 | { |
| 1121 | if (plugin_data->real_bfd) |
| 1122 | bfd_close (plugin_data->real_bfd); |
| 1123 | |
| 1124 | if (plugin_data->real_syms) |
| 1125 | free (plugin_data->real_syms); |
| 1126 | } |
| 1127 | |
| 1128 | return _bfd_generic_close_and_cleanup (abfd); |
| 1129 | } |
| 1130 | |
| 1131 | const bfd_target plugin_vec = |
| 1132 | { |
| 1133 | "plugin", /* Name. */ |
| 1134 | bfd_target_unknown_flavour, |
| 1135 | BFD_ENDIAN_LITTLE, /* Target byte order. */ |
| 1136 | BFD_ENDIAN_LITTLE, /* Target headers byte order. */ |
| 1137 | (HAS_RELOC | EXEC_P | /* Object flags. */ |
| 1138 | HAS_LINENO | HAS_DEBUG | |
| 1139 | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), |
| 1140 | (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS |
| 1141 | | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ |
| 1142 | 0, /* symbol_leading_char. */ |
| 1143 | '/', /* ar_pad_char. */ |
| 1144 | 15, /* ar_max_namelen. */ |
| 1145 | 255, /* match priority. */ |
| 1146 | |
| 1147 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| 1148 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| 1149 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ |
| 1150 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| 1151 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| 1152 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ |
| 1153 | |
| 1154 | { /* bfd_check_format. */ |
| 1155 | _bfd_dummy_target, |
| 1156 | bfd_plugin_object_p, |
| 1157 | bfd_generic_archive_p, |
| 1158 | _bfd_dummy_target |
| 1159 | }, |
| 1160 | { /* bfd_set_format. */ |
| 1161 | _bfd_bool_bfd_false_error, |
| 1162 | _bfd_bool_bfd_false_error, |
| 1163 | _bfd_generic_mkarchive, |
| 1164 | _bfd_bool_bfd_false_error, |
| 1165 | }, |
| 1166 | { /* bfd_write_contents. */ |
| 1167 | _bfd_bool_bfd_false_error, |
| 1168 | _bfd_bool_bfd_false_error, |
| 1169 | _bfd_write_archive_contents, |
| 1170 | _bfd_bool_bfd_false_error, |
| 1171 | }, |
| 1172 | |
| 1173 | BFD_JUMP_TABLE_GENERIC (bfd_plugin), |
| 1174 | BFD_JUMP_TABLE_COPY (bfd_plugin), |
| 1175 | BFD_JUMP_TABLE_CORE (bfd_plugin), |
| 1176 | #ifdef USE_64_BIT_ARCHIVE |
| 1177 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_64_bit), |
| 1178 | #else |
| 1179 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), |
| 1180 | #endif |
| 1181 | BFD_JUMP_TABLE_SYMBOLS (bfd_plugin), |
| 1182 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), |
| 1183 | BFD_JUMP_TABLE_WRITE (bfd_plugin), |
| 1184 | BFD_JUMP_TABLE_LINK (bfd_plugin), |
| 1185 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 1186 | |
| 1187 | NULL, |
| 1188 | |
| 1189 | NULL /* backend_data. */ |
| 1190 | }; |
| 1191 | #endif /* BFD_SUPPORTS_PLUGIN */ |