1/* PEF support for BFD. 2 Copyright (C) 1999-2017 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/* PEF (Preferred Executable Format) is the binary file format for late 22 classic Mac OS versions (before Darwin). It is supported by both m68k 23 and PowerPc. It is also called CFM (Code Fragment Manager). */ 24 25#include "sysdep.h" 26#include "safe-ctype.h" 27#include "pef.h" 28#include "pef-traceback.h" 29#include "bfd.h" 30#include "libbfd.h" 31#include "libiberty.h" 32 33#ifndef BFD_IO_FUNCS 34#define BFD_IO_FUNCS 0 35#endif 36 37#define bfd_pef_close_and_cleanup _bfd_generic_close_and_cleanup 38#define bfd_pef_bfd_free_cached_info _bfd_generic_bfd_free_cached_info 39#define bfd_pef_new_section_hook _bfd_generic_new_section_hook 40#define bfd_pef_bfd_is_local_label_name bfd_generic_is_local_label_name 41#define bfd_pef_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) 42#define bfd_pef_get_lineno _bfd_nosymbols_get_lineno 43#define bfd_pef_find_nearest_line _bfd_nosymbols_find_nearest_line 44#define bfd_pef_find_line _bfd_nosymbols_find_line 45#define bfd_pef_find_inliner_info _bfd_nosymbols_find_inliner_info 46#define bfd_pef_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string 47#define bfd_pef_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol 48#define bfd_pef_read_minisymbols _bfd_generic_read_minisymbols 49#define bfd_pef_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol 50#define bfd_pef_set_arch_mach _bfd_generic_set_arch_mach 51#define bfd_pef_get_section_contents _bfd_generic_get_section_contents 52#define bfd_pef_set_section_contents _bfd_generic_set_section_contents 53#define bfd_pef_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents 54#define bfd_pef_bfd_relax_section bfd_generic_relax_section 55#define bfd_pef_bfd_gc_sections bfd_generic_gc_sections 56#define bfd_pef_bfd_lookup_section_flags bfd_generic_lookup_section_flags 57#define bfd_pef_bfd_merge_sections bfd_generic_merge_sections 58#define bfd_pef_bfd_is_group_section bfd_generic_is_group_section 59#define bfd_pef_bfd_discard_group bfd_generic_discard_group 60#define bfd_pef_section_already_linked _bfd_generic_section_already_linked 61#define bfd_pef_bfd_define_common_symbol bfd_generic_define_common_symbol 62#define bfd_pef_bfd_link_hash_table_create _bfd_generic_link_hash_table_create 63#define bfd_pef_bfd_link_add_symbols _bfd_generic_link_add_symbols 64#define bfd_pef_bfd_link_just_syms _bfd_generic_link_just_syms 65#define bfd_pef_bfd_copy_link_hash_symbol_type \ 66 _bfd_generic_copy_link_hash_symbol_type 67#define bfd_pef_bfd_final_link _bfd_generic_final_link 68#define bfd_pef_bfd_link_split_section _bfd_generic_link_split_section 69#define bfd_pef_get_section_contents_in_window _bfd_generic_get_section_contents_in_window 70#define bfd_pef_bfd_link_check_relocs _bfd_generic_link_check_relocs 71 72static int 73bfd_pef_parse_traceback_table (bfd *abfd, 74 asection *section, 75 unsigned char *buf, 76 size_t len, 77 size_t pos, 78 asymbol *sym, 79 FILE *file) 80{ 81 struct traceback_table table; 82 size_t offset; 83 const char *s; 84 asymbol tmpsymbol; 85 86 if (sym == NULL) 87 sym = & tmpsymbol; 88 89 sym->name = NULL; 90 sym->value = 0; 91 sym->the_bfd = abfd; 92 sym->section = section; 93 sym->flags = 0; 94 sym->udata.i = 0; 95 96 /* memcpy is fine since all fields are unsigned char. */ 97 if ((pos + 8) > len) 98 return -1; 99 memcpy (&table, buf + pos, 8); 100 101 /* Calling code relies on returned symbols having a name and 102 correct offset. */ 103 if ((table.lang != TB_C) && (table.lang != TB_CPLUSPLUS)) 104 return -1; 105 106 if (! (table.flags2 & TB_NAME_PRESENT)) 107 return -1; 108 109 if (! (table.flags1 & TB_HAS_TBOFF)) 110 return -1; 111 112 offset = 8; 113 114 if ((table.flags5 & TB_FLOATPARAMS) || (table.fixedparams)) 115 offset += 4; 116 117 if (table.flags1 & TB_HAS_TBOFF) 118 { 119 struct traceback_table_tboff off; 120 121 if ((pos + offset + 4) > len) 122 return -1; 123 off.tb_offset = bfd_getb32 (buf + pos + offset); 124 offset += 4; 125 126 /* Need to subtract 4 because the offset includes the 0x0L 127 preceding the table. */ 128 if (file != NULL) 129 fprintf (file, " [offset = 0x%lx]", off.tb_offset); 130 131 if ((file == NULL) && ((off.tb_offset + 4) > (pos + offset))) 132 return -1; 133 134 sym->value = pos - off.tb_offset - 4; 135 } 136 137 if (table.flags2 & TB_INT_HNDL) 138 offset += 4; 139 140 if (table.flags1 & TB_HAS_CTL) 141 { 142 struct traceback_table_anchors anchors; 143 144 if ((pos + offset + 4) > len) 145 return -1; 146 anchors.ctl_info = bfd_getb32 (buf + pos + offset); 147 offset += 4; 148 149 if (anchors.ctl_info > 1024) 150 return -1; 151 152 offset += anchors.ctl_info * 4; 153 } 154 155 if (table.flags2 & TB_NAME_PRESENT) 156 { 157 struct traceback_table_routine name; 158 char *namebuf; 159 160 if ((pos + offset + 2) > len) 161 return -1; 162 name.name_len = bfd_getb16 (buf + pos + offset); 163 offset += 2; 164 165 if (name.name_len > 4096) 166 return -1; 167 168 if ((pos + offset + name.name_len) > len) 169 return -1; 170 171 namebuf = bfd_alloc (abfd, name.name_len + 1); 172 if (namebuf == NULL) 173 return -1; 174 175 memcpy (namebuf, buf + pos + offset, name.name_len); 176 namebuf[name.name_len] = '\0'; 177 178 /* Strip leading period inserted by compiler. */ 179 if (namebuf[0] == '.') 180 memmove (namebuf, namebuf + 1, name.name_len + 1); 181 182 sym->name = namebuf; 183 184 for (s = sym->name; (*s != '\0'); s++) 185 if (! ISPRINT (*s)) 186 return -1; 187 188 offset += name.name_len; 189 } 190 191 if (table.flags2 & TB_USES_ALLOCA) 192 offset += 4; 193 194 if (table.flags4 & TB_HAS_VEC_INFO) 195 offset += 4; 196 197 if (file != NULL) 198 fprintf (file, " [length = 0x%lx]", (unsigned long) offset); 199 200 return offset; 201} 202 203static void 204bfd_pef_print_symbol (bfd *abfd, 205 void * afile, 206 asymbol *symbol, 207 bfd_print_symbol_type how) 208{ 209 FILE *file = (FILE *) afile; 210 211 switch (how) 212 { 213 case bfd_print_symbol_name: 214 fprintf (file, "%s", symbol->name); 215 break; 216 default: 217 bfd_print_symbol_vandf (abfd, (void *) file, symbol); 218 fprintf (file, " %-5s %s", symbol->section->name, symbol->name); 219 if (CONST_STRNEQ (symbol->name, "__traceback_")) 220 { 221 unsigned char *buf = xmalloc (symbol->udata.i); 222 size_t offset = symbol->value + 4; 223 size_t len = symbol->udata.i; 224 int ret; 225 226 bfd_get_section_contents (abfd, symbol->section, buf, offset, len); 227 ret = bfd_pef_parse_traceback_table (abfd, symbol->section, buf, 228 len, 0, NULL, file); 229 if (ret < 0) 230 fprintf (file, " [ERROR]"); 231 free (buf); 232 } 233 } 234} 235 236static void 237bfd_pef_convert_architecture (unsigned long architecture, 238 enum bfd_architecture *type, 239 unsigned long *subtype) 240{ 241 const unsigned long ARCH_POWERPC = 0x70777063; /* 'pwpc'. */ 242 const unsigned long ARCH_M68K = 0x6d36386b; /* 'm68k'. */ 243 244 *subtype = bfd_arch_unknown; 245 *type = bfd_arch_unknown; 246 247 if (architecture == ARCH_POWERPC) 248 *type = bfd_arch_powerpc; 249 else if (architecture == ARCH_M68K) 250 *type = bfd_arch_m68k; 251} 252 253static bfd_boolean 254bfd_pef_mkobject (bfd *abfd ATTRIBUTE_UNUSED) 255{ 256 return TRUE; 257} 258 259static const char *bfd_pef_section_name (bfd_pef_section *section) 260{ 261 switch (section->section_kind) 262 { 263 case BFD_PEF_SECTION_CODE: return "code"; 264 case BFD_PEF_SECTION_UNPACKED_DATA: return "unpacked-data"; 265 case BFD_PEF_SECTION_PACKED_DATA: return "packed-data"; 266 case BFD_PEF_SECTION_CONSTANT: return "constant"; 267 case BFD_PEF_SECTION_LOADER: return "loader"; 268 case BFD_PEF_SECTION_DEBUG: return "debug"; 269 case BFD_PEF_SECTION_EXEC_DATA: return "exec-data"; 270 case BFD_PEF_SECTION_EXCEPTION: return "exception"; 271 case BFD_PEF_SECTION_TRACEBACK: return "traceback"; 272 default: return "unknown"; 273 } 274} 275 276static unsigned long bfd_pef_section_flags (bfd_pef_section *section) 277{ 278 switch (section->section_kind) 279 { 280 case BFD_PEF_SECTION_CODE: 281 return SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC | SEC_CODE; 282 case BFD_PEF_SECTION_UNPACKED_DATA: 283 case BFD_PEF_SECTION_PACKED_DATA: 284 case BFD_PEF_SECTION_CONSTANT: 285 case BFD_PEF_SECTION_LOADER: 286 case BFD_PEF_SECTION_DEBUG: 287 case BFD_PEF_SECTION_EXEC_DATA: 288 case BFD_PEF_SECTION_EXCEPTION: 289 case BFD_PEF_SECTION_TRACEBACK: 290 default: 291 return SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC; 292 } 293} 294 295static asection * 296bfd_pef_make_bfd_section (bfd *abfd, bfd_pef_section *section) 297{ 298 asection *bfdsec; 299 const char *name = bfd_pef_section_name (section); 300 301 bfdsec = bfd_make_section_anyway (abfd, name); 302 if (bfdsec == NULL) 303 return NULL; 304 305 bfdsec->vma = section->default_address + section->container_offset; 306 bfdsec->lma = section->default_address + section->container_offset; 307 bfdsec->size = section->container_length; 308 bfdsec->filepos = section->container_offset; 309 bfdsec->alignment_power = section->alignment; 310 311 bfdsec->flags = bfd_pef_section_flags (section); 312 313 return bfdsec; 314} 315 316int 317bfd_pef_parse_loader_header (bfd *abfd ATTRIBUTE_UNUSED, 318 unsigned char *buf, 319 size_t len, 320 bfd_pef_loader_header *header) 321{ 322 BFD_ASSERT (len == 56); 323 324 header->main_section = bfd_getb32 (buf); 325 header->main_offset = bfd_getb32 (buf + 4); 326 header->init_section = bfd_getb32 (buf + 8); 327 header->init_offset = bfd_getb32 (buf + 12); 328 header->term_section = bfd_getb32 (buf + 16); 329 header->term_offset = bfd_getb32 (buf + 20); 330 header->imported_library_count = bfd_getb32 (buf + 24); 331 header->total_imported_symbol_count = bfd_getb32 (buf + 28); 332 header->reloc_section_count = bfd_getb32 (buf + 32); 333 header->reloc_instr_offset = bfd_getb32 (buf + 36); 334 header->loader_strings_offset = bfd_getb32 (buf + 40); 335 header->export_hash_offset = bfd_getb32 (buf + 44); 336 header->export_hash_table_power = bfd_getb32 (buf + 48); 337 header->exported_symbol_count = bfd_getb32 (buf + 52); 338 339 return 0; 340} 341 342int 343bfd_pef_parse_imported_library (bfd *abfd ATTRIBUTE_UNUSED, 344 unsigned char *buf, 345 size_t len, 346 bfd_pef_imported_library *header) 347{ 348 BFD_ASSERT (len == 24); 349 350 header->name_offset = bfd_getb32 (buf); 351 header->old_implementation_version = bfd_getb32 (buf + 4); 352 header->current_version = bfd_getb32 (buf + 8); 353 header->imported_symbol_count = bfd_getb32 (buf + 12); 354 header->first_imported_symbol = bfd_getb32 (buf + 16); 355 header->options = buf[20]; 356 header->reserved_a = buf[21]; 357 header->reserved_b = bfd_getb16 (buf + 22); 358 359 return 0; 360} 361 362int 363bfd_pef_parse_imported_symbol (bfd *abfd ATTRIBUTE_UNUSED, 364 unsigned char *buf, 365 size_t len, 366 bfd_pef_imported_symbol *symbol) 367{ 368 unsigned long value; 369 370 BFD_ASSERT (len == 4); 371 372 value = bfd_getb32 (buf); 373 symbol->symbol_class = value >> 24; 374 symbol->name = value & 0x00ffffff; 375 376 return 0; 377} 378 379int 380bfd_pef_scan_section (bfd *abfd, bfd_pef_section *section) 381{ 382 unsigned char buf[28]; 383 384 bfd_seek (abfd, section->header_offset, SEEK_SET); 385 if (bfd_bread ((void *) buf, 28, abfd) != 28) 386 return -1; 387 388 section->name_offset = bfd_h_get_32 (abfd, buf); 389 section->default_address = bfd_h_get_32 (abfd, buf + 4); 390 section->total_length = bfd_h_get_32 (abfd, buf + 8); 391 section->unpacked_length = bfd_h_get_32 (abfd, buf + 12); 392 section->container_length = bfd_h_get_32 (abfd, buf + 16); 393 section->container_offset = bfd_h_get_32 (abfd, buf + 20); 394 section->section_kind = buf[24]; 395 section->share_kind = buf[25]; 396 section->alignment = buf[26]; 397 section->reserved = buf[27]; 398 399 section->bfd_section = bfd_pef_make_bfd_section (abfd, section); 400 if (section->bfd_section == NULL) 401 return -1; 402 403 return 0; 404} 405 406void 407bfd_pef_print_loader_header (bfd *abfd ATTRIBUTE_UNUSED, 408 bfd_pef_loader_header *header, 409 FILE *file) 410{ 411 fprintf (file, "main_section: %ld\n", header->main_section); 412 fprintf (file, "main_offset: %lu\n", header->main_offset); 413 fprintf (file, "init_section: %ld\n", header->init_section); 414 fprintf (file, "init_offset: %lu\n", header->init_offset); 415 fprintf (file, "term_section: %ld\n", header->term_section); 416 fprintf (file, "term_offset: %lu\n", header->term_offset); 417 fprintf (file, "imported_library_count: %lu\n", 418 header->imported_library_count); 419 fprintf (file, "total_imported_symbol_count: %lu\n", 420 header->total_imported_symbol_count); 421 fprintf (file, "reloc_section_count: %lu\n", header->reloc_section_count); 422 fprintf (file, "reloc_instr_offset: %lu\n", header->reloc_instr_offset); 423 fprintf (file, "loader_strings_offset: %lu\n", 424 header->loader_strings_offset); 425 fprintf (file, "export_hash_offset: %lu\n", header->export_hash_offset); 426 fprintf (file, "export_hash_table_power: %lu\n", 427 header->export_hash_table_power); 428 fprintf (file, "exported_symbol_count: %lu\n", 429 header->exported_symbol_count); 430} 431 432int 433bfd_pef_print_loader_section (bfd *abfd, FILE *file) 434{ 435 bfd_pef_loader_header header; 436 asection *loadersec = NULL; 437 unsigned char *loaderbuf = NULL; 438 size_t loaderlen = 0; 439 440 loadersec = bfd_get_section_by_name (abfd, "loader"); 441 if (loadersec == NULL) 442 return -1; 443 444 loaderlen = loadersec->size; 445 loaderbuf = bfd_malloc (loaderlen); 446 447 if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) < 0 448 || bfd_bread ((void *) loaderbuf, loaderlen, abfd) != loaderlen 449 || loaderlen < 56 450 || bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header) < 0) 451 { 452 free (loaderbuf); 453 return -1; 454 } 455 456 bfd_pef_print_loader_header (abfd, &header, file); 457 return 0; 458} 459 460int 461bfd_pef_scan_start_address (bfd *abfd) 462{ 463 bfd_pef_loader_header header; 464 asection *section; 465 466 asection *loadersec = NULL; 467 unsigned char *loaderbuf = NULL; 468 size_t loaderlen = 0; 469 int ret; 470 471 loadersec = bfd_get_section_by_name (abfd, "loader"); 472 if (loadersec == NULL) 473 goto end; 474 475 loaderlen = loadersec->size; 476 loaderbuf = bfd_malloc (loaderlen); 477 if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) < 0) 478 goto error; 479 if (bfd_bread ((void *) loaderbuf, loaderlen, abfd) != loaderlen) 480 goto error; 481 482 if (loaderlen < 56) 483 goto error; 484 ret = bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header); 485 if (ret < 0) 486 goto error; 487 488 if (header.main_section < 0) 489 goto end; 490 491 for (section = abfd->sections; section != NULL; section = section->next) 492 if ((long) (section->index + 1) == header.main_section) 493 break; 494 495 if (section == NULL) 496 goto error; 497 498 abfd->start_address = section->vma + header.main_offset; 499 500 end: 501 if (loaderbuf != NULL) 502 free (loaderbuf); 503 return 0; 504 505 error: 506 if (loaderbuf != NULL) 507 free (loaderbuf); 508 return -1; 509} 510 511int 512bfd_pef_scan (bfd *abfd, 513 bfd_pef_header *header, 514 bfd_pef_data_struct *mdata) 515{ 516 unsigned int i; 517 enum bfd_architecture cputype; 518 unsigned long cpusubtype; 519 520 mdata->header = *header; 521 522 bfd_pef_convert_architecture (header->architecture, &cputype, &cpusubtype); 523 if (cputype == bfd_arch_unknown) 524 { 525 _bfd_error_handler (_("bfd_pef_scan: unknown architecture 0x%lx"), 526 header->architecture); 527 return -1; 528 } 529 bfd_set_arch_mach (abfd, cputype, cpusubtype); 530 531 mdata->header = *header; 532 533 abfd->flags = (abfd->xvec->object_flags 534 | (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS))); 535 536 if (header->section_count != 0) 537 { 538 mdata->sections = bfd_alloc (abfd, header->section_count * sizeof (bfd_pef_section)); 539 540 if (mdata->sections == NULL) 541 return -1; 542 543 for (i = 0; i < header->section_count; i++) 544 { 545 bfd_pef_section *cur = &mdata->sections[i]; 546 cur->header_offset = 40 + (i * 28); 547 if (bfd_pef_scan_section (abfd, cur) < 0) 548 return -1; 549 } 550 } 551 552 if (bfd_pef_scan_start_address (abfd) < 0) 553 return -1; 554 555 abfd->tdata.pef_data = mdata; 556 557 return 0; 558} 559 560static int 561bfd_pef_read_header (bfd *abfd, bfd_pef_header *header) 562{ 563 unsigned char buf[40]; 564 565 bfd_seek (abfd, 0, SEEK_SET); 566 567 if (bfd_bread ((void *) buf, 40, abfd) != 40) 568 return -1; 569 570 header->tag1 = bfd_getb32 (buf); 571 header->tag2 = bfd_getb32 (buf + 4); 572 header->architecture = bfd_getb32 (buf + 8); 573 header->format_version = bfd_getb32 (buf + 12); 574 header->timestamp = bfd_getb32 (buf + 16); 575 header->old_definition_version = bfd_getb32 (buf + 20); 576 header->old_implementation_version = bfd_getb32 (buf + 24); 577 header->current_version = bfd_getb32 (buf + 28); 578 header->section_count = bfd_getb32 (buf + 32) + 1; 579 header->instantiated_section_count = bfd_getb32 (buf + 34); 580 header->reserved = bfd_getb32 (buf + 36); 581 582 return 0; 583} 584 585static const bfd_target * 586bfd_pef_object_p (bfd *abfd) 587{ 588 bfd_pef_header header; 589 bfd_pef_data_struct *mdata; 590 591 if (bfd_pef_read_header (abfd, &header) != 0) 592 goto wrong; 593 594 if (header.tag1 != BFD_PEF_TAG1 || header.tag2 != BFD_PEF_TAG2) 595 goto wrong; 596 597 mdata = (bfd_pef_data_struct *) bfd_zalloc (abfd, sizeof (*mdata)); 598 if (mdata == NULL) 599 goto fail; 600 601 if (bfd_pef_scan (abfd, &header, mdata)) 602 goto wrong; 603 604 return abfd->xvec; 605 606 wrong: 607 bfd_set_error (bfd_error_wrong_format); 608 609 fail: 610 return NULL; 611} 612 613static int 614bfd_pef_parse_traceback_tables (bfd *abfd, 615 asection *sec, 616 unsigned char *buf, 617 size_t len, 618 long *nsym, 619 asymbol **csym) 620{ 621 char *name; 622 623 asymbol function; 624 asymbol traceback; 625 626 const char *const tbprefix = "__traceback_"; 627 size_t tbnamelen; 628 629 size_t pos = 0; 630 unsigned long count = 0; 631 int ret; 632 633 for (;;) 634 { 635 /* We're reading symbols two at a time. */ 636 if (csym && ((csym[count] == NULL) || (csym[count + 1] == NULL))) 637 break; 638 639 pos += 3; 640 pos -= (pos % 4); 641 642 while ((pos + 4) <= len) 643 { 644 if (bfd_getb32 (buf + pos) == 0) 645 break; 646 pos += 4; 647 } 648 649 if ((pos + 4) > len) 650 break; 651 652 ret = bfd_pef_parse_traceback_table (abfd, sec, buf, len, pos + 4, 653 &function, 0); 654 if (ret < 0) 655 { 656 /* Skip over 0x0L to advance to next possible traceback table. */ 657 pos += 4; 658 continue; 659 } 660 661 BFD_ASSERT (function.name != NULL); 662 663 /* Don't bother to compute the name if we are just 664 counting symbols. */ 665 if (csym) 666 { 667 tbnamelen = strlen (tbprefix) + strlen (function.name); 668 name = bfd_alloc (abfd, tbnamelen + 1); 669 if (name == NULL) 670 { 671 bfd_release (abfd, (void *) function.name); 672 function.name = NULL; 673 break; 674 } 675 snprintf (name, tbnamelen + 1, "%s%s", tbprefix, function.name); 676 traceback.name = name; 677 traceback.value = pos; 678 traceback.the_bfd = abfd; 679 traceback.section = sec; 680 traceback.flags = 0; 681 traceback.udata.i = ret; 682 683 *(csym[count]) = function; 684 *(csym[count + 1]) = traceback; 685 } 686 687 pos += ret; 688 count += 2; 689 } 690 691 *nsym = count; 692 return 0; 693} 694 695static int 696bfd_pef_parse_function_stub (bfd *abfd ATTRIBUTE_UNUSED, 697 unsigned char *buf, 698 size_t len, 699 unsigned long *offset) 700{ 701 BFD_ASSERT (len == 24); 702 703 if ((bfd_getb32 (buf) & 0xffff0000) != 0x81820000) 704 return -1; 705 if (bfd_getb32 (buf + 4) != 0x90410014) 706 return -1; 707 if (bfd_getb32 (buf + 8) != 0x800c0000) 708 return -1; 709 if (bfd_getb32 (buf + 12) != 0x804c0004) 710 return -1; 711 if (bfd_getb32 (buf + 16) != 0x7c0903a6) 712 return -1; 713 if (bfd_getb32 (buf + 20) != 0x4e800420) 714 return -1; 715 716 if (offset != NULL) 717 *offset = (bfd_getb32 (buf) & 0x0000ffff) / 4; 718 719 return 0; 720} 721 722static int 723bfd_pef_parse_function_stubs (bfd *abfd, 724 asection *codesec, 725 unsigned char *codebuf, 726 size_t codelen, 727 unsigned char *loaderbuf, 728 size_t loaderlen, 729 unsigned long *nsym, 730 asymbol **csym) 731{ 732 const char *const sprefix = "__stub_"; 733 size_t codepos = 0; 734 unsigned long count = 0; 735 bfd_pef_loader_header header; 736 bfd_pef_imported_library *libraries = NULL; 737 bfd_pef_imported_symbol *imports = NULL; 738 unsigned long i; 739 int ret; 740 741 if (loaderlen < 56) 742 goto error; 743 744 ret = bfd_pef_parse_loader_header (abfd, loaderbuf, 56, &header); 745 if (ret < 0) 746 goto error; 747 748 libraries = bfd_malloc 749 (header.imported_library_count * sizeof (bfd_pef_imported_library)); 750 imports = bfd_malloc 751 (header.total_imported_symbol_count * sizeof (bfd_pef_imported_symbol)); 752 753 if (loaderlen < (56 + (header.imported_library_count * 24))) 754 goto error; 755 for (i = 0; i < header.imported_library_count; i++) 756 { 757 ret = bfd_pef_parse_imported_library 758 (abfd, loaderbuf + 56 + (i * 24), 24, &libraries[i]); 759 if (ret < 0) 760 goto error; 761 } 762 763 if (loaderlen < (56 + (header.imported_library_count * 24) 764 + (header.total_imported_symbol_count * 4))) 765 goto error; 766 for (i = 0; i < header.total_imported_symbol_count; i++) 767 { 768 ret = (bfd_pef_parse_imported_symbol 769 (abfd, 770 loaderbuf + 56 + (header.imported_library_count * 24) + (i * 4), 771 4, &imports[i])); 772 if (ret < 0) 773 goto error; 774 } 775 776 codepos = 0; 777 778 for (;;) 779 { 780 asymbol sym; 781 const char *symname; 782 char *name; 783 unsigned long sym_index; 784 785 if (csym && (csym[count] == NULL)) 786 break; 787 788 codepos += 3; 789 codepos -= (codepos % 4); 790 791 while ((codepos + 4) <= codelen) 792 { 793 if ((bfd_getb32 (codebuf + codepos) & 0xffff0000) == 0x81820000) 794 break; 795 codepos += 4; 796 } 797 798 if ((codepos + 4) > codelen) 799 break; 800 801 ret = bfd_pef_parse_function_stub (abfd, codebuf + codepos, 24, &sym_index); 802 if (ret < 0) 803 { 804 codepos += 24; 805 continue; 806 } 807 808 if (sym_index >= header.total_imported_symbol_count) 809 { 810 codepos += 24; 811 continue; 812 } 813 814 { 815 size_t max, namelen; 816 const char *s; 817 818 if (loaderlen < (header.loader_strings_offset + imports[sym_index].name)) 819 goto error; 820 821 max = loaderlen - (header.loader_strings_offset + imports[sym_index].name); 822 symname = (char *) loaderbuf; 823 symname += header.loader_strings_offset + imports[sym_index].name; 824 namelen = 0; 825 for (s = symname; s < (symname + max); s++) 826 { 827 if (*s == '\0') 828 break; 829 if (! ISPRINT (*s)) 830 goto error; 831 namelen++; 832 } 833 if (*s != '\0') 834 goto error; 835 836 name = bfd_alloc (abfd, strlen (sprefix) + namelen + 1); 837 if (name == NULL) 838 break; 839 840 snprintf (name, strlen (sprefix) + namelen + 1, "%s%s", 841 sprefix, symname); 842 sym.name = name; 843 } 844 845 sym.value = codepos; 846 sym.the_bfd = abfd; 847 sym.section = codesec; 848 sym.flags = 0; 849 sym.udata.i = 0; 850 851 codepos += 24; 852 853 if (csym != NULL) 854 *(csym[count]) = sym; 855 856 count++; 857 } 858 859 goto end; 860 861 end: 862 if (libraries != NULL) 863 free (libraries); 864 if (imports != NULL) 865 free (imports); 866 *nsym = count; 867 return 0; 868 869 error: 870 if (libraries != NULL) 871 free (libraries); 872 if (imports != NULL) 873 free (imports); 874 *nsym = count; 875 return -1; 876} 877 878static long 879bfd_pef_parse_symbols (bfd *abfd, asymbol **csym) 880{ 881 unsigned long count = 0; 882 883 asection *codesec = NULL; 884 unsigned char *codebuf = NULL; 885 size_t codelen = 0; 886 887 asection *loadersec = NULL; 888 unsigned char *loaderbuf = NULL; 889 size_t loaderlen = 0; 890 891 codesec = bfd_get_section_by_name (abfd, "code"); 892 if (codesec != NULL) 893 { 894 codelen = codesec->size; 895 codebuf = bfd_malloc (codelen); 896 if (bfd_seek (abfd, codesec->filepos, SEEK_SET) < 0) 897 goto end; 898 if (bfd_bread ((void *) codebuf, codelen, abfd) != codelen) 899 goto end; 900 } 901 902 loadersec = bfd_get_section_by_name (abfd, "loader"); 903 if (loadersec != NULL) 904 { 905 loaderlen = loadersec->size; 906 loaderbuf = bfd_malloc (loaderlen); 907 if (bfd_seek (abfd, loadersec->filepos, SEEK_SET) < 0) 908 goto end; 909 if (bfd_bread ((void *) loaderbuf, loaderlen, abfd) != loaderlen) 910 goto end; 911 } 912 913 count = 0; 914 if (codesec != NULL) 915 { 916 long ncount = 0; 917 bfd_pef_parse_traceback_tables (abfd, codesec, codebuf, codelen, 918 &ncount, csym); 919 count += ncount; 920 } 921 922 if ((codesec != NULL) && (loadersec != NULL)) 923 { 924 unsigned long ncount = 0; 925 bfd_pef_parse_function_stubs 926 (abfd, codesec, codebuf, codelen, loaderbuf, loaderlen, &ncount, 927 (csym != NULL) ? (csym + count) : NULL); 928 count += ncount; 929 } 930 931 if (csym != NULL) 932 csym[count] = NULL; 933 934 end: 935 if (codebuf != NULL) 936 free (codebuf); 937 938 if (loaderbuf != NULL) 939 free (loaderbuf); 940 941 return count; 942} 943 944static long 945bfd_pef_count_symbols (bfd *abfd) 946{ 947 return bfd_pef_parse_symbols (abfd, NULL); 948} 949 950static long 951bfd_pef_get_symtab_upper_bound (bfd *abfd) 952{ 953 long nsyms = bfd_pef_count_symbols (abfd); 954 955 if (nsyms < 0) 956 return nsyms; 957 return ((nsyms + 1) * sizeof (asymbol *)); 958} 959 960static long 961bfd_pef_canonicalize_symtab (bfd *abfd, asymbol **alocation) 962{ 963 long i; 964 asymbol *syms; 965 long ret; 966 long nsyms = bfd_pef_count_symbols (abfd); 967 968 if (nsyms < 0) 969 return nsyms; 970 971 syms = bfd_alloc (abfd, nsyms * sizeof (asymbol)); 972 if (syms == NULL) 973 return -1; 974 975 for (i = 0; i < nsyms; i++) 976 alocation[i] = &syms[i]; 977 978 alocation[nsyms] = NULL; 979 980 ret = bfd_pef_parse_symbols (abfd, alocation); 981 if (ret != nsyms) 982 return 0; 983 984 return ret; 985} 986 987#define bfd_pef_make_empty_symbol _bfd_generic_make_empty_symbol 988 989static void 990bfd_pef_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, 991 asymbol *symbol, 992 symbol_info *ret) 993{ 994 bfd_symbol_info (symbol, ret); 995} 996 997static int 998bfd_pef_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, 999 struct bfd_link_info *info ATTRIBUTE_UNUSED) 1000{ 1001 return 0; 1002} 1003 1004const bfd_target pef_vec = 1005{ 1006 "pef", /* Name. */ 1007 bfd_target_pef_flavour, /* Flavour. */ 1008 BFD_ENDIAN_BIG, /* Byteorder. */ 1009 BFD_ENDIAN_BIG, /* Header_byteorder. */ 1010 (HAS_RELOC | EXEC_P | /* Object flags. */ 1011 HAS_LINENO | HAS_DEBUG | 1012 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), 1013 (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | SEC_DATA 1014 | SEC_ROM | SEC_HAS_CONTENTS), /* Section_flags. */ 1015 0, /* Symbol_leading_char. */ 1016 ' ', /* AR_pad_char. */ 1017 16, /* AR_max_namelen. */ 1018 0, /* match priority. */ 1019 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 1020 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 1021 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */ 1022 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 1023 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 1024 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */ 1025 { /* bfd_check_format. */ 1026 _bfd_dummy_target, 1027 bfd_pef_object_p, /* bfd_check_format. */ 1028 _bfd_dummy_target, 1029 _bfd_dummy_target, 1030 }, 1031 { /* bfd_set_format. */ 1032 bfd_false, 1033 bfd_pef_mkobject, 1034 bfd_false, 1035 bfd_false, 1036 }, 1037 { /* bfd_write_contents. */ 1038 bfd_false, 1039 bfd_true, 1040 bfd_false, 1041 bfd_false, 1042 }, 1043 1044 BFD_JUMP_TABLE_GENERIC (bfd_pef), 1045 BFD_JUMP_TABLE_COPY (_bfd_generic), 1046 BFD_JUMP_TABLE_CORE (_bfd_nocore), 1047 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 1048 BFD_JUMP_TABLE_SYMBOLS (bfd_pef), 1049 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 1050 BFD_JUMP_TABLE_WRITE (bfd_pef), 1051 BFD_JUMP_TABLE_LINK (bfd_pef), 1052 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 1053 1054 NULL, 1055 1056 NULL 1057}; 1058 1059#define bfd_pef_xlib_close_and_cleanup _bfd_generic_close_and_cleanup 1060#define bfd_pef_xlib_bfd_free_cached_info _bfd_generic_bfd_free_cached_info 1061#define bfd_pef_xlib_new_section_hook _bfd_generic_new_section_hook 1062#define bfd_pef_xlib_get_section_contents _bfd_generic_get_section_contents 1063#define bfd_pef_xlib_set_section_contents _bfd_generic_set_section_contents 1064#define bfd_pef_xlib_get_section_contents_in_window _bfd_generic_get_section_contents_in_window 1065#define bfd_pef_xlib_set_section_contents_in_window _bfd_generic_set_section_contents_in_window 1066 1067static int 1068bfd_pef_xlib_read_header (bfd *abfd, bfd_pef_xlib_header *header) 1069{ 1070 unsigned char buf[80]; 1071 1072 bfd_seek (abfd, 0, SEEK_SET); 1073 1074 if (bfd_bread ((void *) buf, sizeof buf, abfd) != sizeof buf) 1075 return -1; 1076 1077 header->tag1 = bfd_getb32 (buf); 1078 header->tag2 = bfd_getb32 (buf + 4); 1079 header->current_format = bfd_getb32 (buf + 8); 1080 header->container_strings_offset = bfd_getb32 (buf + 12); 1081 header->export_hash_offset = bfd_getb32 (buf + 16); 1082 header->export_key_offset = bfd_getb32 (buf + 20); 1083 header->export_symbol_offset = bfd_getb32 (buf + 24); 1084 header->export_names_offset = bfd_getb32 (buf + 28); 1085 header->export_hash_table_power = bfd_getb32 (buf + 32); 1086 header->exported_symbol_count = bfd_getb32 (buf + 36); 1087 header->frag_name_offset = bfd_getb32 (buf + 40); 1088 header->frag_name_length = bfd_getb32 (buf + 44); 1089 header->dylib_path_offset = bfd_getb32 (buf + 48); 1090 header->dylib_path_length = bfd_getb32 (buf + 52); 1091 header->cpu_family = bfd_getb32 (buf + 56); 1092 header->cpu_model = bfd_getb32 (buf + 60); 1093 header->date_time_stamp = bfd_getb32 (buf + 64); 1094 header->current_version = bfd_getb32 (buf + 68); 1095 header->old_definition_version = bfd_getb32 (buf + 72); 1096 header->old_implementation_version = bfd_getb32 (buf + 76); 1097 1098 return 0; 1099} 1100 1101static int 1102bfd_pef_xlib_scan (bfd *abfd, bfd_pef_xlib_header *header) 1103{ 1104 bfd_pef_xlib_data_struct *mdata = NULL; 1105 1106 mdata = bfd_alloc (abfd, sizeof (* mdata)); 1107 if (mdata == NULL) 1108 return -1; 1109 1110 mdata->header = *header; 1111 1112 abfd->flags = (abfd->xvec->object_flags 1113 | (abfd->flags & (BFD_IN_MEMORY | BFD_IO_FUNCS))); 1114 1115 abfd->tdata.pef_xlib_data = mdata; 1116 1117 return 0; 1118} 1119 1120static const bfd_target * 1121bfd_pef_xlib_object_p (bfd *abfd) 1122{ 1123 bfd_pef_xlib_header header; 1124 1125 if (bfd_pef_xlib_read_header (abfd, &header) != 0) 1126 { 1127 bfd_set_error (bfd_error_wrong_format); 1128 return NULL; 1129 } 1130 1131 if ((header.tag1 != BFD_PEF_XLIB_TAG1) 1132 || ((header.tag2 != BFD_PEF_VLIB_TAG2) 1133 && (header.tag2 != BFD_PEF_BLIB_TAG2))) 1134 { 1135 bfd_set_error (bfd_error_wrong_format); 1136 return NULL; 1137 } 1138 1139 if (bfd_pef_xlib_scan (abfd, &header) != 0) 1140 { 1141 bfd_set_error (bfd_error_wrong_format); 1142 return NULL; 1143 } 1144 1145 return abfd->xvec; 1146} 1147 1148const bfd_target pef_xlib_vec = 1149{ 1150 "pef-xlib", /* Name. */ 1151 bfd_target_pef_xlib_flavour, /* Flavour. */ 1152 BFD_ENDIAN_BIG, /* Byteorder */ 1153 BFD_ENDIAN_BIG, /* Header_byteorder. */ 1154 (HAS_RELOC | EXEC_P | /* Object flags. */ 1155 HAS_LINENO | HAS_DEBUG | 1156 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), 1157 (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | SEC_DATA 1158 | SEC_ROM | SEC_HAS_CONTENTS),/* Section_flags. */ 1159 0, /* Symbol_leading_char. */ 1160 ' ', /* AR_pad_char. */ 1161 16, /* AR_max_namelen. */ 1162 0, /* match priority. */ 1163 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 1164 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 1165 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */ 1166 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 1167 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 1168 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */ 1169 { /* bfd_check_format. */ 1170 _bfd_dummy_target, 1171 bfd_pef_xlib_object_p, /* bfd_check_format. */ 1172 _bfd_dummy_target, 1173 _bfd_dummy_target, 1174 }, 1175 { /* bfd_set_format. */ 1176 bfd_false, 1177 bfd_pef_mkobject, 1178 bfd_false, 1179 bfd_false, 1180 }, 1181 { /* bfd_write_contents. */ 1182 bfd_false, 1183 bfd_true, 1184 bfd_false, 1185 bfd_false, 1186 }, 1187 1188 BFD_JUMP_TABLE_GENERIC (bfd_pef_xlib), 1189 BFD_JUMP_TABLE_COPY (_bfd_generic), 1190 BFD_JUMP_TABLE_CORE (_bfd_nocore), 1191 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 1192 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 1193 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 1194 BFD_JUMP_TABLE_WRITE (_bfd_nowrite), 1195 BFD_JUMP_TABLE_LINK (_bfd_nolink), 1196 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 1197 1198 NULL, 1199 1200 NULL 1201}; 1202