| 1 | /* Plugin support for BFD. |
| 2 | Copyright (C) 2009-2019 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_close_and_cleanup _bfd_generic_close_and_cleanup |
| 73 | #define bfd_plugin_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
| 74 | #define bfd_plugin_new_section_hook _bfd_generic_new_section_hook |
| 75 | #define bfd_plugin_get_section_contents _bfd_generic_get_section_contents |
| 76 | #define bfd_plugin_get_section_contents_in_window _bfd_generic_get_section_contents_in_window |
| 77 | #define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data |
| 78 | #define bfd_plugin_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data |
| 79 | #define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data |
| 80 | #define bfd_plugin_bfd_set_private_flags _bfd_generic_bfd_set_private_flags |
| 81 | #define bfd_plugin_core_file_matches_executable_p generic_core_file_matches_executable_p |
| 82 | #define bfd_plugin_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name |
| 83 | #define bfd_plugin_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false |
| 84 | #define bfd_plugin_get_lineno _bfd_nosymbols_get_lineno |
| 85 | #define bfd_plugin_find_nearest_line _bfd_nosymbols_find_nearest_line |
| 86 | #define bfd_plugin_find_line _bfd_nosymbols_find_line |
| 87 | #define bfd_plugin_find_inliner_info _bfd_nosymbols_find_inliner_info |
| 88 | #define bfd_plugin_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string |
| 89 | #define bfd_plugin_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol |
| 90 | #define bfd_plugin_read_minisymbols _bfd_generic_read_minisymbols |
| 91 | #define bfd_plugin_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
| 92 | #define bfd_plugin_set_arch_mach bfd_default_set_arch_mach |
| 93 | #define bfd_plugin_set_section_contents _bfd_generic_set_section_contents |
| 94 | #define bfd_plugin_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents |
| 95 | #define bfd_plugin_bfd_relax_section bfd_generic_relax_section |
| 96 | #define bfd_plugin_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
| 97 | #define bfd_plugin_bfd_link_add_symbols _bfd_generic_link_add_symbols |
| 98 | #define bfd_plugin_bfd_link_just_syms _bfd_generic_link_just_syms |
| 99 | #define bfd_plugin_bfd_final_link _bfd_generic_final_link |
| 100 | #define bfd_plugin_bfd_link_split_section _bfd_generic_link_split_section |
| 101 | #define bfd_plugin_bfd_gc_sections bfd_generic_gc_sections |
| 102 | #define bfd_plugin_bfd_lookup_section_flags bfd_generic_lookup_section_flags |
| 103 | #define bfd_plugin_bfd_merge_sections bfd_generic_merge_sections |
| 104 | #define bfd_plugin_bfd_is_group_section bfd_generic_is_group_section |
| 105 | #define bfd_plugin_bfd_group_name bfd_generic_group_name |
| 106 | #define bfd_plugin_bfd_discard_group bfd_generic_discard_group |
| 107 | #define bfd_plugin_section_already_linked _bfd_generic_section_already_linked |
| 108 | #define bfd_plugin_bfd_define_common_symbol bfd_generic_define_common_symbol |
| 109 | #define bfd_plugin_bfd_link_hide_symbol _bfd_generic_link_hide_symbol |
| 110 | #define bfd_plugin_bfd_define_start_stop bfd_generic_define_start_stop |
| 111 | #define bfd_plugin_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type |
| 112 | #define bfd_plugin_bfd_link_check_relocs _bfd_generic_link_check_relocs |
| 113 | |
| 114 | static enum ld_plugin_status |
| 115 | message (int level ATTRIBUTE_UNUSED, |
| 116 | const char * format, ...) |
| 117 | { |
| 118 | va_list args; |
| 119 | va_start (args, format); |
| 120 | printf ("bfd plugin: "); |
| 121 | vprintf (format, args); |
| 122 | putchar ('\n'); |
| 123 | va_end (args); |
| 124 | return LDPS_OK; |
| 125 | } |
| 126 | |
| 127 | /* Register a claim-file handler. */ |
| 128 | static ld_plugin_claim_file_handler claim_file = NULL; |
| 129 | |
| 130 | static enum ld_plugin_status |
| 131 | register_claim_file (ld_plugin_claim_file_handler handler) |
| 132 | { |
| 133 | claim_file = handler; |
| 134 | return LDPS_OK; |
| 135 | } |
| 136 | |
| 137 | static enum ld_plugin_status |
| 138 | add_symbols (void * handle, |
| 139 | int nsyms, |
| 140 | const struct ld_plugin_symbol * syms) |
| 141 | { |
| 142 | bfd *abfd = handle; |
| 143 | struct plugin_data_struct *plugin_data = |
| 144 | bfd_alloc (abfd, sizeof (plugin_data_struct)); |
| 145 | |
| 146 | plugin_data->nsyms = nsyms; |
| 147 | plugin_data->syms = syms; |
| 148 | |
| 149 | if (nsyms != 0) |
| 150 | abfd->flags |= HAS_SYMS; |
| 151 | |
| 152 | abfd->tdata.plugin_data = plugin_data; |
| 153 | return LDPS_OK; |
| 154 | } |
| 155 | |
| 156 | static const char *plugin_program_name; |
| 157 | |
| 158 | void |
| 159 | bfd_plugin_set_program_name (const char *program_name) |
| 160 | { |
| 161 | plugin_program_name = program_name; |
| 162 | } |
| 163 | |
| 164 | int |
| 165 | bfd_plugin_open_input (bfd *ibfd, struct ld_plugin_input_file *file) |
| 166 | { |
| 167 | bfd *iobfd; |
| 168 | |
| 169 | iobfd = ibfd; |
| 170 | while (iobfd->my_archive |
| 171 | && !bfd_is_thin_archive (iobfd->my_archive)) |
| 172 | iobfd = iobfd->my_archive; |
| 173 | file->name = iobfd->filename; |
| 174 | |
| 175 | if (!iobfd->iostream && !bfd_open_file (iobfd)) |
| 176 | return 0; |
| 177 | |
| 178 | /* The plugin API expects that the file descriptor won't be closed |
| 179 | and reused as done by the bfd file cache. So open it again. |
| 180 | dup isn't good enough. plugin IO uses lseek/read while BFD uses |
| 181 | fseek/fread. It isn't wise to mix the unistd and stdio calls on |
| 182 | the same underlying file descriptor. */ |
| 183 | file->fd = open (file->name, O_RDONLY | O_BINARY); |
| 184 | if (file->fd < 0) |
| 185 | return 0; |
| 186 | |
| 187 | if (iobfd == ibfd) |
| 188 | { |
| 189 | struct stat stat_buf; |
| 190 | |
| 191 | if (fstat (file->fd, &stat_buf)) |
| 192 | { |
| 193 | close(file->fd); |
| 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | file->offset = 0; |
| 198 | file->filesize = stat_buf.st_size; |
| 199 | } |
| 200 | else |
| 201 | { |
| 202 | file->offset = ibfd->origin; |
| 203 | file->filesize = arelt_size (ibfd); |
| 204 | } |
| 205 | return 1; |
| 206 | } |
| 207 | |
| 208 | static int |
| 209 | try_claim (bfd *abfd) |
| 210 | { |
| 211 | int claimed = 0; |
| 212 | struct ld_plugin_input_file file; |
| 213 | |
| 214 | file.handle = abfd; |
| 215 | if (!bfd_plugin_open_input (abfd, &file)) |
| 216 | return 0; |
| 217 | if (claim_file) |
| 218 | claim_file (&file, &claimed); |
| 219 | close (file.fd); |
| 220 | return claimed; |
| 221 | } |
| 222 | |
| 223 | struct plugin_list_entry |
| 224 | { |
| 225 | void * handle; |
| 226 | ld_plugin_claim_file_handler claim_file; |
| 227 | struct plugin_list_entry * next; |
| 228 | }; |
| 229 | |
| 230 | static struct plugin_list_entry * plugin_list = NULL; |
| 231 | |
| 232 | static int |
| 233 | try_load_plugin (const char *pname, bfd *abfd, int *has_plugin_p) |
| 234 | { |
| 235 | void *plugin_handle = NULL; |
| 236 | struct ld_plugin_tv tv[4]; |
| 237 | int i; |
| 238 | ld_plugin_onload onload; |
| 239 | enum ld_plugin_status status; |
| 240 | struct plugin_list_entry *plugin_list_iter; |
| 241 | |
| 242 | *has_plugin_p = 0; |
| 243 | |
| 244 | plugin_handle = dlopen (pname, RTLD_NOW); |
| 245 | if (!plugin_handle) |
| 246 | { |
| 247 | _bfd_error_handler ("%s\n", dlerror ()); |
| 248 | return 0; |
| 249 | } |
| 250 | |
| 251 | for (plugin_list_iter = plugin_list; |
| 252 | plugin_list_iter; |
| 253 | plugin_list_iter = plugin_list_iter->next) |
| 254 | { |
| 255 | if (plugin_handle == plugin_list_iter->handle) |
| 256 | { |
| 257 | dlclose (plugin_handle); |
| 258 | if (!plugin_list_iter->claim_file) |
| 259 | return 0; |
| 260 | |
| 261 | register_claim_file (plugin_list_iter->claim_file); |
| 262 | goto have_claim_file; |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | plugin_list_iter = bfd_malloc (sizeof *plugin_list_iter); |
| 267 | if (plugin_list_iter == NULL) |
| 268 | return 0; |
| 269 | plugin_list_iter->handle = plugin_handle; |
| 270 | plugin_list_iter->claim_file = NULL; |
| 271 | plugin_list_iter->next = plugin_list; |
| 272 | plugin_list = plugin_list_iter; |
| 273 | |
| 274 | onload = dlsym (plugin_handle, "onload"); |
| 275 | if (!onload) |
| 276 | return 0; |
| 277 | |
| 278 | i = 0; |
| 279 | tv[i].tv_tag = LDPT_MESSAGE; |
| 280 | tv[i].tv_u.tv_message = message; |
| 281 | |
| 282 | ++i; |
| 283 | tv[i].tv_tag = LDPT_REGISTER_CLAIM_FILE_HOOK; |
| 284 | tv[i].tv_u.tv_register_claim_file = register_claim_file; |
| 285 | |
| 286 | ++i; |
| 287 | tv[i].tv_tag = LDPT_ADD_SYMBOLS; |
| 288 | tv[i].tv_u.tv_add_symbols = add_symbols; |
| 289 | |
| 290 | ++i; |
| 291 | tv[i].tv_tag = LDPT_NULL; |
| 292 | tv[i].tv_u.tv_val = 0; |
| 293 | |
| 294 | status = (*onload)(tv); |
| 295 | |
| 296 | if (status != LDPS_OK) |
| 297 | return 0; |
| 298 | |
| 299 | plugin_list_iter->claim_file = claim_file; |
| 300 | |
| 301 | have_claim_file: |
| 302 | *has_plugin_p = 1; |
| 303 | |
| 304 | abfd->plugin_format = bfd_plugin_no; |
| 305 | |
| 306 | if (!claim_file) |
| 307 | return 0; |
| 308 | |
| 309 | if (!try_claim (abfd)) |
| 310 | return 0; |
| 311 | |
| 312 | abfd->plugin_format = bfd_plugin_yes; |
| 313 | return 1; |
| 314 | } |
| 315 | |
| 316 | /* There may be plugin libraries in lib/bfd-plugins. */ |
| 317 | |
| 318 | static int has_plugin = -1; |
| 319 | |
| 320 | static const bfd_target *(*ld_plugin_object_p) (bfd *); |
| 321 | |
| 322 | static const char *plugin_name; |
| 323 | |
| 324 | void |
| 325 | bfd_plugin_set_plugin (const char *p) |
| 326 | { |
| 327 | plugin_name = p; |
| 328 | has_plugin = p != NULL; |
| 329 | } |
| 330 | |
| 331 | /* Return TRUE if a plugin library is used. */ |
| 332 | |
| 333 | bfd_boolean |
| 334 | bfd_plugin_specified_p (void) |
| 335 | { |
| 336 | return has_plugin > 0; |
| 337 | } |
| 338 | |
| 339 | /* Return TRUE if ABFD can be claimed by linker LTO plugin. */ |
| 340 | |
| 341 | bfd_boolean |
| 342 | bfd_link_plugin_object_p (bfd *abfd) |
| 343 | { |
| 344 | if (ld_plugin_object_p) |
| 345 | return ld_plugin_object_p (abfd) != NULL; |
| 346 | return FALSE; |
| 347 | } |
| 348 | |
| 349 | extern const bfd_target plugin_vec; |
| 350 | |
| 351 | /* Return TRUE if TARGET is a pointer to plugin_vec. */ |
| 352 | |
| 353 | bfd_boolean |
| 354 | bfd_plugin_target_p (const bfd_target *target) |
| 355 | { |
| 356 | return target == &plugin_vec; |
| 357 | } |
| 358 | |
| 359 | /* Register OBJECT_P to be used by bfd_plugin_object_p. */ |
| 360 | |
| 361 | void |
| 362 | register_ld_plugin_object_p (const bfd_target *(*object_p) (bfd *)) |
| 363 | { |
| 364 | ld_plugin_object_p = object_p; |
| 365 | } |
| 366 | |
| 367 | static int |
| 368 | load_plugin (bfd *abfd) |
| 369 | { |
| 370 | /* The intent was to search ${libdir}/bfd-plugins for plugins, but |
| 371 | unfortunately the original implementation wasn't precisely that |
| 372 | when configuring binutils using --libdir. Search in the proper |
| 373 | path first, then the old one for backwards compatibility. */ |
| 374 | static const char *path[] |
| 375 | = { LIBDIR "/bfd-plugins", BINDIR "/../lib/bfd-plugins" }; |
| 376 | struct stat last_st; |
| 377 | int found = 0; |
| 378 | unsigned int i; |
| 379 | |
| 380 | if (!has_plugin) |
| 381 | return found; |
| 382 | |
| 383 | if (plugin_name) |
| 384 | return try_load_plugin (plugin_name, abfd, &has_plugin); |
| 385 | |
| 386 | if (plugin_program_name == NULL) |
| 387 | return found; |
| 388 | |
| 389 | /* Try not to search the same dir twice, by looking at st_dev and |
| 390 | st_ino for the dir. If we are on a file system that always sets |
| 391 | st_ino to zero or the actual st_ino is zero we might waste some |
| 392 | time, but that doesn't matter too much. */ |
| 393 | last_st.st_dev = 0; |
| 394 | last_st.st_ino = 0; |
| 395 | for (i = 0; i < sizeof (path) / sizeof (path[0]); i++) |
| 396 | { |
| 397 | char *plugin_dir = make_relative_prefix (plugin_program_name, |
| 398 | BINDIR, |
| 399 | path[i]); |
| 400 | if (plugin_dir) |
| 401 | { |
| 402 | struct stat st; |
| 403 | DIR *d; |
| 404 | |
| 405 | if (stat (plugin_dir, &st) == 0 |
| 406 | && S_ISDIR (st.st_mode) |
| 407 | && !(last_st.st_dev == st.st_dev |
| 408 | && last_st.st_ino == st.st_ino |
| 409 | && st.st_ino != 0) |
| 410 | && (d = opendir (plugin_dir)) != NULL) |
| 411 | { |
| 412 | struct dirent *ent; |
| 413 | |
| 414 | last_st.st_dev = st.st_dev; |
| 415 | last_st.st_ino = st.st_ino; |
| 416 | while ((ent = readdir (d)) != NULL) |
| 417 | { |
| 418 | char *full_name; |
| 419 | |
| 420 | full_name = concat (plugin_dir, "/", ent->d_name, NULL); |
| 421 | if (stat (full_name, &st) == 0 && S_ISREG (st.st_mode)) |
| 422 | { |
| 423 | int valid_plugin; |
| 424 | |
| 425 | found = try_load_plugin (full_name, abfd, &valid_plugin); |
| 426 | if (has_plugin <= 0) |
| 427 | has_plugin = valid_plugin; |
| 428 | } |
| 429 | free (full_name); |
| 430 | if (found) |
| 431 | break; |
| 432 | } |
| 433 | closedir (d); |
| 434 | } |
| 435 | free (plugin_dir); |
| 436 | } |
| 437 | if (found) |
| 438 | break; |
| 439 | } |
| 440 | |
| 441 | return found; |
| 442 | } |
| 443 | |
| 444 | |
| 445 | static const bfd_target * |
| 446 | bfd_plugin_object_p (bfd *abfd) |
| 447 | { |
| 448 | if (ld_plugin_object_p) |
| 449 | return ld_plugin_object_p (abfd); |
| 450 | |
| 451 | if (abfd->plugin_format == bfd_plugin_unknown && !load_plugin (abfd)) |
| 452 | return NULL; |
| 453 | |
| 454 | return abfd->plugin_format == bfd_plugin_yes ? abfd->xvec : NULL; |
| 455 | } |
| 456 | |
| 457 | /* Copy any private info we understand from the input bfd |
| 458 | to the output bfd. */ |
| 459 | |
| 460 | static bfd_boolean |
| 461 | bfd_plugin_bfd_copy_private_bfd_data (bfd *ibfd ATTRIBUTE_UNUSED, |
| 462 | bfd *obfd ATTRIBUTE_UNUSED) |
| 463 | { |
| 464 | BFD_ASSERT (0); |
| 465 | return TRUE; |
| 466 | } |
| 467 | |
| 468 | /* Copy any private info we understand from the input section |
| 469 | to the output section. */ |
| 470 | |
| 471 | static bfd_boolean |
| 472 | bfd_plugin_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED, |
| 473 | asection *isection ATTRIBUTE_UNUSED, |
| 474 | bfd *obfd ATTRIBUTE_UNUSED, |
| 475 | asection *osection ATTRIBUTE_UNUSED) |
| 476 | { |
| 477 | BFD_ASSERT (0); |
| 478 | return TRUE; |
| 479 | } |
| 480 | |
| 481 | /* Copy any private info we understand from the input symbol |
| 482 | to the output symbol. */ |
| 483 | |
| 484 | static bfd_boolean |
| 485 | bfd_plugin_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED, |
| 486 | asymbol *isymbol ATTRIBUTE_UNUSED, |
| 487 | bfd *obfd ATTRIBUTE_UNUSED, |
| 488 | asymbol *osymbol ATTRIBUTE_UNUSED) |
| 489 | { |
| 490 | BFD_ASSERT (0); |
| 491 | return TRUE; |
| 492 | } |
| 493 | |
| 494 | static bfd_boolean |
| 495 | bfd_plugin_bfd_print_private_bfd_data (bfd *abfd ATTRIBUTE_UNUSED, PTR ptr ATTRIBUTE_UNUSED) |
| 496 | { |
| 497 | BFD_ASSERT (0); |
| 498 | return TRUE; |
| 499 | } |
| 500 | |
| 501 | static char * |
| 502 | bfd_plugin_core_file_failing_command (bfd *abfd ATTRIBUTE_UNUSED) |
| 503 | { |
| 504 | BFD_ASSERT (0); |
| 505 | return NULL; |
| 506 | } |
| 507 | |
| 508 | static int |
| 509 | bfd_plugin_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED) |
| 510 | { |
| 511 | BFD_ASSERT (0); |
| 512 | return 0; |
| 513 | } |
| 514 | |
| 515 | static int |
| 516 | bfd_plugin_core_file_pid (bfd *abfd ATTRIBUTE_UNUSED) |
| 517 | { |
| 518 | BFD_ASSERT (0); |
| 519 | return 0; |
| 520 | } |
| 521 | |
| 522 | static long |
| 523 | bfd_plugin_get_symtab_upper_bound (bfd *abfd) |
| 524 | { |
| 525 | struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data; |
| 526 | long nsyms = plugin_data->nsyms; |
| 527 | |
| 528 | BFD_ASSERT (nsyms >= 0); |
| 529 | |
| 530 | return ((nsyms + 1) * sizeof (asymbol *)); |
| 531 | } |
| 532 | |
| 533 | static flagword |
| 534 | convert_flags (const struct ld_plugin_symbol *sym) |
| 535 | { |
| 536 | switch (sym->def) |
| 537 | { |
| 538 | case LDPK_DEF: |
| 539 | case LDPK_COMMON: |
| 540 | case LDPK_UNDEF: |
| 541 | return BSF_GLOBAL; |
| 542 | |
| 543 | case LDPK_WEAKUNDEF: |
| 544 | case LDPK_WEAKDEF: |
| 545 | return BSF_GLOBAL | BSF_WEAK; |
| 546 | |
| 547 | default: |
| 548 | BFD_ASSERT (0); |
| 549 | return 0; |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | static long |
| 554 | bfd_plugin_canonicalize_symtab (bfd *abfd, |
| 555 | asymbol **alocation) |
| 556 | { |
| 557 | struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data; |
| 558 | long nsyms = plugin_data->nsyms; |
| 559 | const struct ld_plugin_symbol *syms = plugin_data->syms; |
| 560 | static asection fake_section |
| 561 | = BFD_FAKE_SECTION (fake_section, NULL, "plug", 0, |
| 562 | SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS); |
| 563 | static asection fake_common_section |
| 564 | = BFD_FAKE_SECTION (fake_common_section, NULL, "plug", 0, SEC_IS_COMMON); |
| 565 | int i; |
| 566 | |
| 567 | for (i = 0; i < nsyms; i++) |
| 568 | { |
| 569 | asymbol *s = bfd_alloc (abfd, sizeof (asymbol)); |
| 570 | |
| 571 | BFD_ASSERT (s); |
| 572 | alocation[i] = s; |
| 573 | |
| 574 | s->the_bfd = abfd; |
| 575 | s->name = syms[i].name; |
| 576 | s->value = 0; |
| 577 | s->flags = convert_flags (&syms[i]); |
| 578 | switch (syms[i].def) |
| 579 | { |
| 580 | case LDPK_COMMON: |
| 581 | s->section = &fake_common_section; |
| 582 | break; |
| 583 | case LDPK_UNDEF: |
| 584 | case LDPK_WEAKUNDEF: |
| 585 | s->section = bfd_und_section_ptr; |
| 586 | break; |
| 587 | case LDPK_DEF: |
| 588 | case LDPK_WEAKDEF: |
| 589 | s->section = &fake_section; |
| 590 | break; |
| 591 | default: |
| 592 | BFD_ASSERT (0); |
| 593 | } |
| 594 | |
| 595 | s->udata.p = (void *) &syms[i]; |
| 596 | } |
| 597 | |
| 598 | return nsyms; |
| 599 | } |
| 600 | |
| 601 | static void |
| 602 | bfd_plugin_print_symbol (bfd *abfd ATTRIBUTE_UNUSED, |
| 603 | PTR afile ATTRIBUTE_UNUSED, |
| 604 | asymbol *symbol ATTRIBUTE_UNUSED, |
| 605 | bfd_print_symbol_type how ATTRIBUTE_UNUSED) |
| 606 | { |
| 607 | BFD_ASSERT (0); |
| 608 | } |
| 609 | |
| 610 | static void |
| 611 | bfd_plugin_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
| 612 | asymbol *symbol, |
| 613 | symbol_info *ret) |
| 614 | { |
| 615 | bfd_symbol_info (symbol, ret); |
| 616 | } |
| 617 | |
| 618 | /* Make an empty symbol. */ |
| 619 | |
| 620 | static asymbol * |
| 621 | bfd_plugin_make_empty_symbol (bfd *abfd) |
| 622 | { |
| 623 | asymbol *new_symbol = bfd_zalloc (abfd, sizeof (asymbol)); |
| 624 | if (new_symbol == NULL) |
| 625 | return new_symbol; |
| 626 | new_symbol->the_bfd = abfd; |
| 627 | return new_symbol; |
| 628 | } |
| 629 | |
| 630 | static int |
| 631 | bfd_plugin_sizeof_headers (bfd *a ATTRIBUTE_UNUSED, |
| 632 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 633 | { |
| 634 | BFD_ASSERT (0); |
| 635 | return 0; |
| 636 | } |
| 637 | |
| 638 | const bfd_target plugin_vec = |
| 639 | { |
| 640 | "plugin", /* Name. */ |
| 641 | bfd_target_unknown_flavour, |
| 642 | BFD_ENDIAN_LITTLE, /* Target byte order. */ |
| 643 | BFD_ENDIAN_LITTLE, /* Target headers byte order. */ |
| 644 | (HAS_RELOC | EXEC_P | /* Object flags. */ |
| 645 | HAS_LINENO | HAS_DEBUG | |
| 646 | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), |
| 647 | (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS |
| 648 | | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ |
| 649 | 0, /* symbol_leading_char. */ |
| 650 | '/', /* ar_pad_char. */ |
| 651 | 15, /* ar_max_namelen. */ |
| 652 | 255, /* match priority. */ |
| 653 | |
| 654 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| 655 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| 656 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ |
| 657 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| 658 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| 659 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ |
| 660 | |
| 661 | { /* bfd_check_format. */ |
| 662 | _bfd_dummy_target, |
| 663 | bfd_plugin_object_p, |
| 664 | bfd_generic_archive_p, |
| 665 | _bfd_dummy_target |
| 666 | }, |
| 667 | { /* bfd_set_format. */ |
| 668 | _bfd_bool_bfd_false_error, |
| 669 | _bfd_bool_bfd_false_error, |
| 670 | _bfd_generic_mkarchive, |
| 671 | _bfd_bool_bfd_false_error, |
| 672 | }, |
| 673 | { /* bfd_write_contents. */ |
| 674 | _bfd_bool_bfd_false_error, |
| 675 | _bfd_bool_bfd_false_error, |
| 676 | _bfd_write_archive_contents, |
| 677 | _bfd_bool_bfd_false_error, |
| 678 | }, |
| 679 | |
| 680 | BFD_JUMP_TABLE_GENERIC (bfd_plugin), |
| 681 | BFD_JUMP_TABLE_COPY (bfd_plugin), |
| 682 | BFD_JUMP_TABLE_CORE (bfd_plugin), |
| 683 | #ifdef USE_64_BIT_ARCHIVE |
| 684 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_64_bit), |
| 685 | #else |
| 686 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), |
| 687 | #endif |
| 688 | BFD_JUMP_TABLE_SYMBOLS (bfd_plugin), |
| 689 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), |
| 690 | BFD_JUMP_TABLE_WRITE (bfd_plugin), |
| 691 | BFD_JUMP_TABLE_LINK (bfd_plugin), |
| 692 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 693 | |
| 694 | NULL, |
| 695 | |
| 696 | NULL /* backend_data. */ |
| 697 | }; |
| 698 | #endif /* BFD_SUPPORTS_PLUGIN */ |