| 1 | /* Renesas / SuperH specific support for Symbian 32-bit ELF files |
| 2 | Copyright (C) 2004-2017 Free Software Foundation, Inc. |
| 3 | Contributed by Red Hat |
| 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 3 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., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | |
| 23 | /* Stop elf32-sh.c from defining any target vectors. */ |
| 24 | #define SH_TARGET_ALREADY_DEFINED |
| 25 | #define sh_find_elf_flags sh_symbian_find_elf_flags |
| 26 | #define sh_elf_get_flags_from_mach sh_symbian_elf_get_flags_from_mach |
| 27 | #include "elf32-sh.c" |
| 28 | |
| 29 | |
| 30 | //#define SYMBIAN_DEBUG 1 |
| 31 | #define SYMBIAN_DEBUG 0 |
| 32 | |
| 33 | #define DIRECTIVE_HEADER "#<SYMEDIT>#\n" |
| 34 | #define DIRECTIVE_IMPORT "IMPORT " |
| 35 | #define DIRECTIVE_EXPORT "EXPORT " |
| 36 | #define DIRECTIVE_AS "AS " |
| 37 | |
| 38 | /* Macro to advance 's' until either it reaches 'e' or the |
| 39 | character pointed to by 's' is equal to 'c'. If 'e' is |
| 40 | reached and SYMBIAN_DEBUG is enabled then the error message 'm' |
| 41 | is displayed. */ |
| 42 | #define SKIP_UNTIL(s,e,c,m) \ |
| 43 | do \ |
| 44 | { \ |
| 45 | while (s < e && *s != c) \ |
| 46 | ++ s; \ |
| 47 | if (s >= e) \ |
| 48 | { \ |
| 49 | if (SYMBIAN_DEBUG) \ |
| 50 | fprintf (stderr, "Corrupt directive: %s\n", m); \ |
| 51 | result = FALSE; \ |
| 52 | } \ |
| 53 | } \ |
| 54 | while (0); \ |
| 55 | if (!result) \ |
| 56 | break; |
| 57 | |
| 58 | /* Like SKIP_UNTIL except there are two terminator characters |
| 59 | c1 and c2. */ |
| 60 | #define SKIP_UNTIL2(s,e,c1,c2,m) \ |
| 61 | do \ |
| 62 | { \ |
| 63 | while (s < e && *s != c1 && *s != c2) \ |
| 64 | ++ s; \ |
| 65 | if (s >= e) \ |
| 66 | { \ |
| 67 | if (SYMBIAN_DEBUG) \ |
| 68 | fprintf (stderr, "Corrupt directive: %s\n", m); \ |
| 69 | result = FALSE; \ |
| 70 | } \ |
| 71 | } \ |
| 72 | while (0); \ |
| 73 | if (!result) \ |
| 74 | break; |
| 75 | |
| 76 | /* Macro to advance 's' until either it reaches 'e' or the |
| 77 | character pointed to by 's' is not equal to 'c'. If 'e' |
| 78 | is reached and SYMBIAN_DEBUG is enabled then the error message |
| 79 | 'm' is displayed. */ |
| 80 | #define SKIP_WHILE(s,e,c,m) \ |
| 81 | do \ |
| 82 | { \ |
| 83 | while (s < e && *s == c) \ |
| 84 | ++ s; \ |
| 85 | if (s >= e) \ |
| 86 | { \ |
| 87 | if (SYMBIAN_DEBUG) \ |
| 88 | fprintf (stderr, "Corrupt directive: %s\n", m); \ |
| 89 | result = FALSE; \ |
| 90 | } \ |
| 91 | } \ |
| 92 | while (0); \ |
| 93 | if (!result) \ |
| 94 | break; |
| 95 | |
| 96 | |
| 97 | typedef struct symbol_rename |
| 98 | { |
| 99 | struct symbol_rename * next; |
| 100 | char * current_name; |
| 101 | char * new_name; |
| 102 | struct elf_link_hash_entry * current_hash; |
| 103 | unsigned long new_symndx; |
| 104 | } |
| 105 | symbol_rename; |
| 106 | |
| 107 | static symbol_rename * rename_list = NULL; |
| 108 | |
| 109 | /* Accumulate a list of symbols to be renamed. */ |
| 110 | |
| 111 | static bfd_boolean |
| 112 | sh_symbian_import_as (struct bfd_link_info *info, bfd * abfd, |
| 113 | char * current_name, char * new_name) |
| 114 | { |
| 115 | struct elf_link_hash_entry * new_hash; |
| 116 | symbol_rename * node; |
| 117 | |
| 118 | if (SYMBIAN_DEBUG) |
| 119 | fprintf (stderr, "IMPORT '%s' AS '%s'\n", current_name, new_name); |
| 120 | |
| 121 | for (node = rename_list; node; node = node->next) |
| 122 | if (strcmp (node->current_name, current_name) == 0) |
| 123 | { |
| 124 | if (strcmp (node->new_name, new_name) == 0) |
| 125 | /* Already added to rename list. */ |
| 126 | return TRUE; |
| 127 | |
| 128 | bfd_set_error (bfd_error_invalid_operation); |
| 129 | /* xgettext:c-format */ |
| 130 | _bfd_error_handler (_("%B: IMPORT AS directive for %s conceals previous IMPORT AS"), |
| 131 | abfd, current_name); |
| 132 | return FALSE; |
| 133 | } |
| 134 | |
| 135 | if ((node = bfd_malloc (sizeof * node)) == NULL) |
| 136 | { |
| 137 | if (SYMBIAN_DEBUG) |
| 138 | fprintf (stderr, "IMPORT AS: No mem for new rename node\n"); |
| 139 | return FALSE; |
| 140 | } |
| 141 | |
| 142 | if ((node->current_name = bfd_malloc (strlen (current_name) + 1)) == NULL) |
| 143 | { |
| 144 | if (SYMBIAN_DEBUG) |
| 145 | fprintf (stderr, "IMPORT AS: No mem for current name field in rename node\n"); |
| 146 | free (node); |
| 147 | return FALSE; |
| 148 | } |
| 149 | else |
| 150 | strcpy (node->current_name, current_name); |
| 151 | |
| 152 | if ((node->new_name = bfd_malloc (strlen (new_name) + 1)) == NULL) |
| 153 | { |
| 154 | if (SYMBIAN_DEBUG) |
| 155 | fprintf (stderr, "IMPORT AS: No mem for new name field in rename node\n"); |
| 156 | free (node->current_name); |
| 157 | free (node); |
| 158 | return FALSE; |
| 159 | } |
| 160 | else |
| 161 | strcpy (node->new_name, new_name); |
| 162 | |
| 163 | node->next = rename_list; |
| 164 | node->current_hash = NULL; |
| 165 | node->new_symndx = 0; |
| 166 | rename_list = node; |
| 167 | |
| 168 | new_hash = elf_link_hash_lookup (elf_hash_table (info), node->new_name, TRUE, FALSE, TRUE); |
| 169 | bfd_elf_link_record_dynamic_symbol (info, new_hash); |
| 170 | if (new_hash->root.type == bfd_link_hash_new) |
| 171 | new_hash->root.type = bfd_link_hash_undefined; |
| 172 | |
| 173 | return TRUE; |
| 174 | } |
| 175 | |
| 176 | |
| 177 | static bfd_boolean |
| 178 | sh_symbian_import (bfd * abfd ATTRIBUTE_UNUSED, char * name) |
| 179 | { |
| 180 | if (SYMBIAN_DEBUG) |
| 181 | fprintf (stderr, "IMPORT '%s'\n", name); |
| 182 | |
| 183 | /* XXX: Generate an import somehow ? */ |
| 184 | |
| 185 | return TRUE; |
| 186 | } |
| 187 | |
| 188 | static bfd_boolean |
| 189 | sh_symbian_export (bfd * abfd ATTRIBUTE_UNUSED, char * name) |
| 190 | { |
| 191 | if (SYMBIAN_DEBUG) |
| 192 | fprintf (stderr, "EXPORT '%s'\n", name); |
| 193 | |
| 194 | /* XXX: Generate an export somehow ? */ |
| 195 | |
| 196 | return TRUE; |
| 197 | } |
| 198 | |
| 199 | /* Process any magic embedded commands in the .directive. section. |
| 200 | Returns TRUE upon sucecss, but if it fails it sets bfd_error and |
| 201 | returns FALSE. */ |
| 202 | |
| 203 | static bfd_boolean |
| 204 | sh_symbian_process_embedded_commands (struct bfd_link_info *info, bfd * abfd, |
| 205 | asection * sec, bfd_byte * contents) |
| 206 | { |
| 207 | char *s; |
| 208 | char *e; |
| 209 | bfd_boolean result = TRUE; |
| 210 | bfd_size_type sz = sec->rawsize ? sec->rawsize : sec->size; |
| 211 | |
| 212 | for (s = (char *) contents, e = s + sz; s < e;) |
| 213 | { |
| 214 | char * directive = s; |
| 215 | |
| 216 | switch (*s) |
| 217 | { |
| 218 | /* I want to use "case DIRECTIVE_HEADER [0]:" here but gcc won't let me :-( */ |
| 219 | case '#': |
| 220 | if (strcmp (s, DIRECTIVE_HEADER)) |
| 221 | result = FALSE; |
| 222 | else |
| 223 | /* Just ignore the header. |
| 224 | XXX: Strictly speaking we ought to check that the header |
| 225 | is present and that it is the first thing in the file. */ |
| 226 | s += strlen (DIRECTIVE_HEADER) + 1; |
| 227 | break; |
| 228 | |
| 229 | case 'I': |
| 230 | if (! CONST_STRNEQ (s, DIRECTIVE_IMPORT)) |
| 231 | result = FALSE; |
| 232 | else |
| 233 | { |
| 234 | char * new_name; |
| 235 | char * new_name_end; |
| 236 | char name_end_char; |
| 237 | |
| 238 | /* Skip the IMPORT directive. */ |
| 239 | s += strlen (DIRECTIVE_IMPORT); |
| 240 | |
| 241 | new_name = s; |
| 242 | /* Find the end of the new name. */ |
| 243 | while (s < e && *s != ' ' && *s != '\n') |
| 244 | ++ s; |
| 245 | if (s >= e) |
| 246 | { |
| 247 | /* We have reached the end of the .directive section |
| 248 | without encountering a string terminator. This is |
| 249 | allowed for IMPORT directives. */ |
| 250 | new_name_end = e - 1; |
| 251 | name_end_char = * new_name_end; |
| 252 | * new_name_end = 0; |
| 253 | result = sh_symbian_import (abfd, new_name); |
| 254 | * new_name_end = name_end_char; |
| 255 | break; |
| 256 | } |
| 257 | |
| 258 | /* Remember where the name ends. */ |
| 259 | new_name_end = s; |
| 260 | /* Skip any whitespace before the 'AS'. */ |
| 261 | SKIP_WHILE (s, e, ' ', "IMPORT: Name just followed by spaces"); |
| 262 | /* Terminate the new name. (Do this after skiping...) */ |
| 263 | name_end_char = * new_name_end; |
| 264 | * new_name_end = 0; |
| 265 | |
| 266 | /* Check to see if 'AS '... is present. If so we have an |
| 267 | IMPORT AS directive, otherwise we have an IMPORT directive. */ |
| 268 | if (! CONST_STRNEQ (s, DIRECTIVE_AS)) |
| 269 | { |
| 270 | /* Skip the new-line at the end of the name. */ |
| 271 | if (SYMBIAN_DEBUG && name_end_char != '\n') |
| 272 | fprintf (stderr, "IMPORT: No newline at end of directive\n"); |
| 273 | else |
| 274 | s ++; |
| 275 | |
| 276 | result = sh_symbian_import (abfd, new_name); |
| 277 | |
| 278 | /* Skip past the NUL character. */ |
| 279 | if (* s ++ != 0) |
| 280 | { |
| 281 | if (SYMBIAN_DEBUG) |
| 282 | fprintf (stderr, "IMPORT: No NUL at end of directive\n"); |
| 283 | } |
| 284 | } |
| 285 | else |
| 286 | { |
| 287 | char * current_name; |
| 288 | char * current_name_end; |
| 289 | char current_name_end_char; |
| 290 | |
| 291 | /* Skip the 'AS '. */ |
| 292 | s += strlen (DIRECTIVE_AS); |
| 293 | /* Skip any white space after the 'AS '. */ |
| 294 | SKIP_WHILE (s, e, ' ', "IMPORT AS: Nothing after AS"); |
| 295 | current_name = s; |
| 296 | /* Find the end of the current name. */ |
| 297 | SKIP_UNTIL2 (s, e, ' ', '\n', "IMPORT AS: No newline at the end of the current name"); |
| 298 | /* Skip (backwards) over spaces at the end of the current name. */ |
| 299 | current_name_end = s; |
| 300 | current_name_end_char = * current_name_end; |
| 301 | |
| 302 | SKIP_WHILE (s, e, ' ', "IMPORT AS: Current name just followed by spaces"); |
| 303 | /* Skip past the newline character. */ |
| 304 | if (* s ++ != '\n') |
| 305 | if (SYMBIAN_DEBUG) |
| 306 | fprintf (stderr, "IMPORT AS: No newline at end of directive\n"); |
| 307 | |
| 308 | /* Terminate the current name after having performed the skips. */ |
| 309 | * current_name_end = 0; |
| 310 | |
| 311 | result = sh_symbian_import_as (info, abfd, current_name, new_name); |
| 312 | |
| 313 | /* The next character should be a NUL. */ |
| 314 | if (* s != 0) |
| 315 | { |
| 316 | if (SYMBIAN_DEBUG) |
| 317 | fprintf (stderr, "IMPORT AS: Junk at end of directive\n"); |
| 318 | result = FALSE; |
| 319 | } |
| 320 | s ++; |
| 321 | |
| 322 | * current_name_end = current_name_end_char; |
| 323 | } |
| 324 | |
| 325 | /* Restore the characters we overwrote, since |
| 326 | the .directive section will be emitted. */ |
| 327 | * new_name_end = name_end_char; |
| 328 | } |
| 329 | break; |
| 330 | |
| 331 | case 'E': |
| 332 | if (! CONST_STRNEQ (s, DIRECTIVE_EXPORT)) |
| 333 | result = FALSE; |
| 334 | else |
| 335 | { |
| 336 | char * name; |
| 337 | char * name_end; |
| 338 | char name_end_char; |
| 339 | |
| 340 | /* Skip the directive. */ |
| 341 | s += strlen (DIRECTIVE_EXPORT); |
| 342 | name = s; |
| 343 | /* Find the end of the name to be exported. */ |
| 344 | SKIP_UNTIL (s, e, '\n', "EXPORT: no newline at end of directive"); |
| 345 | /* Skip (backwards) over spaces at end of exported name. */ |
| 346 | for (name_end = s; name_end[-1] == ' '; name_end --) |
| 347 | ; |
| 348 | /* name_end now points at the first character after the |
| 349 | end of the exported name, so we can termiante it */ |
| 350 | name_end_char = * name_end; |
| 351 | * name_end = 0; |
| 352 | /* Skip passed the newline character. */ |
| 353 | s ++; |
| 354 | |
| 355 | result = sh_symbian_export (abfd, name); |
| 356 | |
| 357 | /* The next character should be a NUL. */ |
| 358 | if (* s != 0) |
| 359 | { |
| 360 | if (SYMBIAN_DEBUG) |
| 361 | fprintf (stderr, "EXPORT: Junk at end of directive\n"); |
| 362 | result = FALSE; |
| 363 | } |
| 364 | s++; |
| 365 | |
| 366 | /* Restore the character we deleted. */ |
| 367 | * name_end = name_end_char; |
| 368 | } |
| 369 | break; |
| 370 | |
| 371 | default: |
| 372 | result = FALSE; |
| 373 | break; |
| 374 | } |
| 375 | |
| 376 | if (! result) |
| 377 | { |
| 378 | if (SYMBIAN_DEBUG) |
| 379 | fprintf (stderr, "offset into .directive section: %ld\n", |
| 380 | (long) (directive - (char *) contents)); |
| 381 | |
| 382 | bfd_set_error (bfd_error_invalid_operation); |
| 383 | /* xgettext:c-format */ |
| 384 | _bfd_error_handler (_("%B: Unrecognised .directive command: %s"), |
| 385 | abfd, directive); |
| 386 | break; |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | return result; |
| 391 | } |
| 392 | |
| 393 | |
| 394 | /* Scan a bfd for a .directive section, and if found process it. |
| 395 | Returns TRUE upon success, FALSE otherwise. */ |
| 396 | |
| 397 | static bfd_boolean |
| 398 | sh_symbian_process_directives (bfd *abfd, struct bfd_link_info *info) |
| 399 | { |
| 400 | bfd_boolean result = FALSE; |
| 401 | bfd_byte * contents; |
| 402 | asection * sec = bfd_get_section_by_name (abfd, ".directive"); |
| 403 | bfd_size_type sz; |
| 404 | |
| 405 | if (!sec) |
| 406 | return TRUE; |
| 407 | |
| 408 | sz = sec->rawsize ? sec->rawsize : sec->size; |
| 409 | contents = bfd_malloc (sz); |
| 410 | |
| 411 | if (!contents) |
| 412 | bfd_set_error (bfd_error_no_memory); |
| 413 | else |
| 414 | { |
| 415 | if (bfd_get_section_contents (abfd, sec, contents, 0, sz)) |
| 416 | result = sh_symbian_process_embedded_commands (info, abfd, sec, contents); |
| 417 | free (contents); |
| 418 | } |
| 419 | |
| 420 | return result; |
| 421 | } |
| 422 | |
| 423 | /* Intercept the normal sh_relocate_section() function |
| 424 | and magle the relocs to allow for symbol renaming. */ |
| 425 | |
| 426 | static bfd_boolean |
| 427 | sh_symbian_relocate_section (bfd * output_bfd, |
| 428 | struct bfd_link_info * info, |
| 429 | bfd * input_bfd, |
| 430 | asection * input_section, |
| 431 | bfd_byte * contents, |
| 432 | Elf_Internal_Rela * relocs, |
| 433 | Elf_Internal_Sym * local_syms, |
| 434 | asection ** local_sections) |
| 435 | { |
| 436 | /* When performing a final link we implement the IMPORT AS directives. */ |
| 437 | if (!bfd_link_relocatable (info)) |
| 438 | { |
| 439 | Elf_Internal_Rela * rel; |
| 440 | Elf_Internal_Rela * relend; |
| 441 | Elf_Internal_Shdr * symtab_hdr; |
| 442 | struct elf_link_hash_entry ** sym_hashes; |
| 443 | struct elf_link_hash_entry ** sym_hashes_end; |
| 444 | struct elf_link_hash_table * hash_table; |
| 445 | symbol_rename * ptr; |
| 446 | bfd_size_type num_global_syms; |
| 447 | unsigned long num_local_syms; |
| 448 | |
| 449 | BFD_ASSERT (! elf_bad_symtab (input_bfd)); |
| 450 | |
| 451 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
| 452 | hash_table = elf_hash_table (info); |
| 453 | num_local_syms = symtab_hdr->sh_info; |
| 454 | num_global_syms = symtab_hdr->sh_size / sizeof (Elf32_External_Sym); |
| 455 | num_global_syms -= num_local_syms; |
| 456 | sym_hashes = elf_sym_hashes (input_bfd); |
| 457 | sym_hashes_end = sym_hashes + num_global_syms; |
| 458 | |
| 459 | /* First scan the rename table, caching the hash entry and the new index. */ |
| 460 | for (ptr = rename_list; ptr; ptr = ptr->next) |
| 461 | { |
| 462 | struct elf_link_hash_entry * new_hash; |
| 463 | struct elf_link_hash_entry ** h; |
| 464 | |
| 465 | ptr->current_hash = elf_link_hash_lookup (hash_table, ptr->current_name, FALSE, FALSE, TRUE); |
| 466 | |
| 467 | if (ptr->current_hash == NULL) |
| 468 | { |
| 469 | if (SYMBIAN_DEBUG) |
| 470 | fprintf (stderr, "IMPORT AS: current symbol '%s' does not exist\n", ptr->current_name); |
| 471 | continue; |
| 472 | } |
| 473 | |
| 474 | new_hash = elf_link_hash_lookup (hash_table, ptr->new_name, |
| 475 | FALSE, FALSE, TRUE); |
| 476 | /* If we could not find the symbol then it is a new, undefined symbol. |
| 477 | Symbian want this behaviour - ie they want to be able to rename the |
| 478 | reference in a reloc from one undefined symbol to another, new and |
| 479 | undefined symbol. So we create that symbol here. */ |
| 480 | if (new_hash == NULL) |
| 481 | { |
| 482 | struct bfd_link_hash_entry *bh = NULL; |
| 483 | bfd_boolean collect = get_elf_backend_data (input_bfd)->collect; |
| 484 | if (_bfd_generic_link_add_one_symbol (info, input_bfd, |
| 485 | ptr->new_name, BSF_GLOBAL, |
| 486 | bfd_und_section_ptr, 0, |
| 487 | NULL, FALSE, collect, |
| 488 | &bh)) |
| 489 | { |
| 490 | new_hash = (struct elf_link_hash_entry *) bh; |
| 491 | new_hash->type = STT_FUNC; |
| 492 | new_hash->non_elf = 0; |
| 493 | |
| 494 | if (SYMBIAN_DEBUG) |
| 495 | fprintf (stderr, "Created new symbol %s\n", ptr->new_name); |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | if (new_hash == NULL) |
| 500 | { |
| 501 | /* xgettext:c-format */ |
| 502 | _bfd_error_handler (_("%B: Failed to add renamed symbol %s"), |
| 503 | input_bfd, ptr->new_name); |
| 504 | continue; |
| 505 | } |
| 506 | |
| 507 | /* Convert the new_hash value into a index into the table of symbol hashes. */ |
| 508 | for (h = sym_hashes; h < sym_hashes_end; h ++) |
| 509 | { |
| 510 | if (* h == new_hash) |
| 511 | { |
| 512 | ptr->new_symndx = h - sym_hashes + num_local_syms; |
| 513 | if (SYMBIAN_DEBUG) |
| 514 | fprintf (stderr, "Converted new hash to index of %ld\n", ptr->new_symndx); |
| 515 | break; |
| 516 | } |
| 517 | } |
| 518 | /* If the new symbol is not in the hash table then it must be |
| 519 | because it is one of the newly created undefined symbols |
| 520 | manufactured above. So we extend the sym has table here to |
| 521 | include this extra symbol. */ |
| 522 | if (h == sym_hashes_end) |
| 523 | { |
| 524 | struct elf_link_hash_entry ** new_sym_hashes; |
| 525 | |
| 526 | /* This is not very efficient, but it works. */ |
| 527 | ++ num_global_syms; |
| 528 | new_sym_hashes = bfd_alloc (input_bfd, num_global_syms * sizeof * sym_hashes); |
| 529 | if (new_sym_hashes == NULL) |
| 530 | { |
| 531 | if (SYMBIAN_DEBUG) |
| 532 | fprintf (stderr, "Out of memory extending hash table\n"); |
| 533 | continue; |
| 534 | } |
| 535 | memcpy (new_sym_hashes, sym_hashes, (num_global_syms - 1) * sizeof * sym_hashes); |
| 536 | new_sym_hashes[num_global_syms - 1] = new_hash; |
| 537 | elf_sym_hashes (input_bfd) = sym_hashes = new_sym_hashes; |
| 538 | sym_hashes_end = sym_hashes + num_global_syms; |
| 539 | symtab_hdr->sh_size = (num_global_syms + num_local_syms) * sizeof (Elf32_External_Sym); |
| 540 | |
| 541 | ptr->new_symndx = num_global_syms - 1 + num_local_syms; |
| 542 | |
| 543 | if (SYMBIAN_DEBUG) |
| 544 | fprintf (stderr, "Extended symbol hash table to insert new symbol as index %ld\n", |
| 545 | ptr->new_symndx); |
| 546 | } |
| 547 | } |
| 548 | |
| 549 | /* Walk the reloc list looking for references to renamed symbols. |
| 550 | When we find one, we alter the index in the reloc to point to the new symbol. */ |
| 551 | for (rel = relocs, relend = relocs + input_section->reloc_count; |
| 552 | rel < relend; |
| 553 | rel ++) |
| 554 | { |
| 555 | int r_type; |
| 556 | unsigned long r_symndx; |
| 557 | struct elf_link_hash_entry * h; |
| 558 | |
| 559 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 560 | r_type = ELF32_R_TYPE (rel->r_info); |
| 561 | |
| 562 | /* Ignore unused relocs. */ |
| 563 | if ((r_type >= (int) R_SH_GNU_VTINHERIT |
| 564 | && r_type <= (int) R_SH_LABEL) |
| 565 | || r_type == (int) R_SH_NONE |
| 566 | || r_type < 0 |
| 567 | || r_type >= R_SH_max) |
| 568 | continue; |
| 569 | |
| 570 | /* Ignore relocs against local symbols. */ |
| 571 | if (r_symndx < num_local_syms) |
| 572 | continue; |
| 573 | |
| 574 | BFD_ASSERT (r_symndx < (num_global_syms + num_local_syms)); |
| 575 | h = sym_hashes[r_symndx - num_local_syms]; |
| 576 | BFD_ASSERT (h != NULL); |
| 577 | |
| 578 | while ( h->root.type == bfd_link_hash_indirect |
| 579 | || h->root.type == bfd_link_hash_warning) |
| 580 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 581 | |
| 582 | /* If the symbol is defined there is no need to rename it. |
| 583 | XXX - is this true ? */ |
| 584 | if ( h->root.type == bfd_link_hash_defined |
| 585 | || h->root.type == bfd_link_hash_defweak |
| 586 | || h->root.type == bfd_link_hash_undefweak) |
| 587 | continue; |
| 588 | |
| 589 | for (ptr = rename_list; ptr; ptr = ptr->next) |
| 590 | if (h == ptr->current_hash) |
| 591 | { |
| 592 | BFD_ASSERT (ptr->new_symndx); |
| 593 | if (SYMBIAN_DEBUG) |
| 594 | fprintf (stderr, "convert reloc %lx from using index %ld to using index %ld\n", |
| 595 | (unsigned long) rel->r_info, |
| 596 | (long) ELF32_R_SYM (rel->r_info), ptr->new_symndx); |
| 597 | rel->r_info = ELF32_R_INFO (ptr->new_symndx, r_type); |
| 598 | break; |
| 599 | } |
| 600 | } |
| 601 | } |
| 602 | |
| 603 | return sh_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
| 604 | contents, relocs, local_syms, local_sections); |
| 605 | } |
| 606 | |
| 607 | #define TARGET_LITTLE_SYM sh_elf32_symbian_le_vec |
| 608 | #define TARGET_LITTLE_NAME "elf32-shl-symbian" |
| 609 | |
| 610 | #undef elf_backend_relocate_section |
| 611 | #define elf_backend_relocate_section sh_symbian_relocate_section |
| 612 | #undef elf_backend_check_directives |
| 613 | #define elf_backend_check_directives sh_symbian_process_directives |
| 614 | |
| 615 | #include "elf32-target.h" |