1 /* 2 * File pe_module.c - handle PE module information 3 * 4 * Copyright (C) 1996, Eric Youngdale. 5 * Copyright (C) 1999-2000, Ulrich Weigand. 6 * Copyright (C) 2004-2007, Eric Pouech. 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with this library; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA 21 * 22 */ 23 24 #include <stdlib.h> 25 #include <stdio.h> 26 #include <string.h> 27 #include <assert.h> 28 29 #include "dbghelp_private.h" 30 #include "image_private.h" 31 #ifndef DBGHELP_STATIC_LIB 32 #include "winternl.h" 33 #include "wine/debug.h" 34 #include "wine/heap.h" 35 #else 36 #ifdef _MSC_VER 37 #define strcasecmp _stricmp 38 #endif 39 #endif 40 41 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp); 42 43 struct pe_module_info 44 { 45 struct image_file_map fmap; 46 }; 47 48 static const char builtin_signature[] = "Wine builtin DLL"; 49 50 static void* pe_map_full(struct image_file_map* fmap, IMAGE_NT_HEADERS** nth) 51 { 52 if (!fmap->u.pe.full_map) 53 { 54 fmap->u.pe.full_map = MapViewOfFile(fmap->u.pe.hMap, FILE_MAP_READ, 0, 0, 0); 55 } 56 if (fmap->u.pe.full_map) 57 { 58 if (nth) *nth = RtlImageNtHeader(fmap->u.pe.full_map); 59 fmap->u.pe.full_count++; 60 return fmap->u.pe.full_map; 61 } 62 return NULL; 63 } 64 65 static void pe_unmap_full(struct image_file_map* fmap) 66 { 67 if (fmap->u.pe.full_count && !--fmap->u.pe.full_count) 68 { 69 UnmapViewOfFile(fmap->u.pe.full_map); 70 fmap->u.pe.full_map = NULL; 71 } 72 } 73 74 /****************************************************************** 75 * pe_map_section 76 * 77 * Maps a single section into memory from an PE file 78 */ 79 static const char* pe_map_section(struct image_section_map* ism) 80 { 81 void* mapping; 82 struct pe_file_map* fmap = &ism->fmap->u.pe; 83 84 if (ism->sidx >= 0 && ism->sidx < fmap->ntheader.FileHeader.NumberOfSections && 85 fmap->sect[ism->sidx].mapped == IMAGE_NO_MAP) 86 { 87 IMAGE_NT_HEADERS* nth; 88 89 if (fmap->sect[ism->sidx].shdr.Misc.VirtualSize > fmap->sect[ism->sidx].shdr.SizeOfRawData) 90 { 91 FIXME("Section %ld: virtual (0x%x) > raw (0x%x) size - not supported\n", 92 ism->sidx, fmap->sect[ism->sidx].shdr.Misc.VirtualSize, 93 fmap->sect[ism->sidx].shdr.SizeOfRawData); 94 return IMAGE_NO_MAP; 95 } 96 /* FIXME: that's rather drastic, but that will do for now 97 * that's ok if the full file map exists, but we could be less aggressive otherwise and 98 * only map the relevant section 99 */ 100 if ((mapping = pe_map_full(ism->fmap, &nth))) 101 { 102 fmap->sect[ism->sidx].mapped = RtlImageRvaToVa(nth, mapping, 103 fmap->sect[ism->sidx].shdr.VirtualAddress, 104 NULL); 105 return fmap->sect[ism->sidx].mapped; 106 } 107 } 108 return IMAGE_NO_MAP; 109 } 110 111 /****************************************************************** 112 * pe_find_section 113 * 114 * Finds a section by name (and type) into memory from an PE file 115 * or its alternate if any 116 */ 117 static BOOL pe_find_section(struct image_file_map* fmap, const char* name, 118 struct image_section_map* ism) 119 { 120 const char* sectname; 121 unsigned i; 122 char tmp[IMAGE_SIZEOF_SHORT_NAME + 1]; 123 124 for (i = 0; i < fmap->u.pe.ntheader.FileHeader.NumberOfSections; i++) 125 { 126 sectname = (const char*)fmap->u.pe.sect[i].shdr.Name; 127 /* long section names start with a '/' (at least on MinGW32) */ 128 if (sectname[0] == '/' && fmap->u.pe.strtable) 129 sectname = fmap->u.pe.strtable + atoi(sectname + 1); 130 else 131 { 132 /* the section name may not be null terminated */ 133 sectname = memcpy(tmp, sectname, IMAGE_SIZEOF_SHORT_NAME); 134 tmp[IMAGE_SIZEOF_SHORT_NAME] = '\0'; 135 } 136 if (!stricmp(sectname, name)) 137 { 138 ism->fmap = fmap; 139 ism->sidx = i; 140 return TRUE; 141 } 142 } 143 ism->fmap = NULL; 144 ism->sidx = -1; 145 146 return FALSE; 147 } 148 149 /****************************************************************** 150 * pe_unmap_section 151 * 152 * Unmaps a single section from memory 153 */ 154 static void pe_unmap_section(struct image_section_map* ism) 155 { 156 if (ism->sidx >= 0 && ism->sidx < ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections && 157 ism->fmap->u.pe.sect[ism->sidx].mapped != IMAGE_NO_MAP) 158 { 159 pe_unmap_full(ism->fmap); 160 ism->fmap->u.pe.sect[ism->sidx].mapped = IMAGE_NO_MAP; 161 } 162 } 163 164 /****************************************************************** 165 * pe_get_map_rva 166 * 167 * Get the RVA of an PE section 168 */ 169 static DWORD_PTR pe_get_map_rva(const struct image_section_map* ism) 170 { 171 if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections) 172 return 0; 173 return ism->fmap->u.pe.sect[ism->sidx].shdr.VirtualAddress; 174 } 175 176 /****************************************************************** 177 * pe_get_map_size 178 * 179 * Get the size of a PE section 180 */ 181 static unsigned pe_get_map_size(const struct image_section_map* ism) 182 { 183 if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections) 184 return 0; 185 return ism->fmap->u.pe.sect[ism->sidx].shdr.Misc.VirtualSize; 186 } 187 188 /****************************************************************** 189 * pe_unmap_file 190 * 191 * Unmaps an PE file from memory (previously mapped with pe_map_file) 192 */ 193 static void pe_unmap_file(struct image_file_map* fmap) 194 { 195 if (fmap->u.pe.hMap != 0) 196 { 197 struct image_section_map ism; 198 ism.fmap = fmap; 199 for (ism.sidx = 0; ism.sidx < fmap->u.pe.ntheader.FileHeader.NumberOfSections; ism.sidx++) 200 { 201 pe_unmap_section(&ism); 202 } 203 while (fmap->u.pe.full_count) pe_unmap_full(fmap); 204 HeapFree(GetProcessHeap(), 0, fmap->u.pe.sect); 205 HeapFree(GetProcessHeap(), 0, (void*)fmap->u.pe.strtable); /* FIXME ugly (see pe_map_file) */ 206 CloseHandle(fmap->u.pe.hMap); 207 fmap->u.pe.hMap = NULL; 208 } 209 } 210 211 static const struct image_file_map_ops pe_file_map_ops = 212 { 213 pe_map_section, 214 pe_unmap_section, 215 pe_find_section, 216 pe_get_map_rva, 217 pe_get_map_size, 218 pe_unmap_file, 219 }; 220 221 /****************************************************************** 222 * pe_is_valid_pointer_table 223 * 224 * Checks whether the PointerToSymbolTable and NumberOfSymbols in file_header contain 225 * valid information. 226 */ 227 static BOOL pe_is_valid_pointer_table(const IMAGE_NT_HEADERS* nthdr, const void* mapping, DWORD64 sz) 228 { 229 DWORD64 offset; 230 231 /* is the iSym table inside file size ? (including first DWORD of string table, which is its size) */ 232 offset = (DWORD64)nthdr->FileHeader.PointerToSymbolTable; 233 offset += (DWORD64)nthdr->FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL); 234 if (offset + sizeof(DWORD) > sz) return FALSE; 235 /* is string table (following iSym table) inside file size ? */ 236 offset += *(DWORD*)((const char*)mapping + offset); 237 return offset <= sz; 238 } 239 240 /****************************************************************** 241 * pe_map_file 242 * 243 * Maps an PE file into memory (and checks it's a real PE file) 244 */ 245 BOOL pe_map_file(HANDLE file, struct image_file_map* fmap, enum module_type mt) 246 { 247 void* mapping; 248 249 fmap->modtype = mt; 250 fmap->ops = &pe_file_map_ops; 251 fmap->alternate = NULL; 252 fmap->u.pe.hMap = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL); 253 if (fmap->u.pe.hMap == 0) return FALSE; 254 fmap->u.pe.full_count = 0; 255 fmap->u.pe.full_map = NULL; 256 if (!(mapping = pe_map_full(fmap, NULL))) goto error; 257 258 switch (mt) 259 { 260 case DMT_PE: 261 { 262 IMAGE_NT_HEADERS* nthdr; 263 IMAGE_SECTION_HEADER* section; 264 unsigned i; 265 266 if (!(nthdr = RtlImageNtHeader(mapping))) goto error; 267 memcpy(&fmap->u.pe.ntheader, nthdr, sizeof(fmap->u.pe.ntheader)); 268 switch (nthdr->OptionalHeader.Magic) 269 { 270 case 0x10b: fmap->addr_size = 32; break; 271 case 0x20b: fmap->addr_size = 64; break; 272 default: return FALSE; 273 } 274 275 fmap->u.pe.builtin = !memcmp((const IMAGE_DOS_HEADER*)mapping + 1, builtin_signature, sizeof(builtin_signature)); 276 section = (IMAGE_SECTION_HEADER*) 277 ((char*)&nthdr->OptionalHeader + nthdr->FileHeader.SizeOfOptionalHeader); 278 fmap->u.pe.sect = HeapAlloc(GetProcessHeap(), 0, 279 nthdr->FileHeader.NumberOfSections * sizeof(fmap->u.pe.sect[0])); 280 if (!fmap->u.pe.sect) goto error; 281 for (i = 0; i < nthdr->FileHeader.NumberOfSections; i++) 282 { 283 memcpy(&fmap->u.pe.sect[i].shdr, section + i, sizeof(IMAGE_SECTION_HEADER)); 284 fmap->u.pe.sect[i].mapped = IMAGE_NO_MAP; 285 } 286 if (nthdr->FileHeader.PointerToSymbolTable && nthdr->FileHeader.NumberOfSymbols) 287 { 288 LARGE_INTEGER li; 289 290 if (GetFileSizeEx(file, &li) && pe_is_valid_pointer_table(nthdr, mapping, li.QuadPart)) 291 { 292 /* FIXME ugly: should rather map the relevant content instead of copying it */ 293 const char* src = (const char*)mapping + 294 nthdr->FileHeader.PointerToSymbolTable + 295 nthdr->FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL); 296 char* dst; 297 DWORD sz = *(DWORD*)src; 298 299 if ((dst = HeapAlloc(GetProcessHeap(), 0, sz))) 300 memcpy(dst, src, sz); 301 fmap->u.pe.strtable = dst; 302 } 303 else 304 { 305 WARN("Bad coff table... wipping out\n"); 306 /* we have bad information here, wipe it out */ 307 fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable = 0; 308 fmap->u.pe.ntheader.FileHeader.NumberOfSymbols = 0; 309 fmap->u.pe.strtable = NULL; 310 } 311 } 312 else fmap->u.pe.strtable = NULL; 313 } 314 break; 315 default: assert(0); goto error; 316 } 317 pe_unmap_full(fmap); 318 319 return TRUE; 320 error: 321 pe_unmap_full(fmap); 322 CloseHandle(fmap->u.pe.hMap); 323 return FALSE; 324 } 325 326 /****************************************************************** 327 * pe_map_directory 328 * 329 * Maps a directory content out of a PE file 330 */ 331 const char* pe_map_directory(struct module* module, int dirno, DWORD* size) 332 { 333 IMAGE_NT_HEADERS* nth; 334 void* mapping; 335 336 if (module->type != DMT_PE || !module->format_info[DFI_PE]) return NULL; 337 if (dirno >= IMAGE_NUMBEROF_DIRECTORY_ENTRIES || 338 !(mapping = pe_map_full(&module->format_info[DFI_PE]->u.pe_info->fmap, &nth))) 339 return NULL; 340 if (size) *size = nth->OptionalHeader.DataDirectory[dirno].Size; 341 return RtlImageRvaToVa(nth, mapping, 342 nth->OptionalHeader.DataDirectory[dirno].VirtualAddress, NULL); 343 } 344 345 static void pe_module_remove(struct process* pcs, struct module_format* modfmt) 346 { 347 image_unmap_file(&modfmt->u.pe_info->fmap); 348 HeapFree(GetProcessHeap(), 0, modfmt); 349 } 350 351 /****************************************************************** 352 * pe_locate_with_coff_symbol_table 353 * 354 * Use the COFF symbol table (if any) from the IMAGE_FILE_HEADER to set the absolute address 355 * of global symbols. 356 * Mingw32 requires this for stabs debug information as address for global variables isn't filled in 357 * (this is similar to what is done in elf_module.c when using the .symtab ELF section) 358 */ 359 static BOOL pe_locate_with_coff_symbol_table(struct module* module) 360 { 361 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap; 362 const IMAGE_SYMBOL* isym; 363 int i, numsym, naux; 364 char tmp[9]; 365 const char* name; 366 struct hash_table_iter hti; 367 void* ptr; 368 struct symt_data* sym; 369 const char* mapping; 370 371 numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols; 372 if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym) 373 return TRUE; 374 if (!(mapping = pe_map_full(fmap, NULL))) return FALSE; 375 isym = (const IMAGE_SYMBOL*)(mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable); 376 377 for (i = 0; i < numsym; i+= naux, isym += naux) 378 { 379 if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL && 380 isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections) 381 { 382 if (isym->N.Name.Short) 383 { 384 name = memcpy(tmp, isym->N.ShortName, 8); 385 tmp[8] = '\0'; 386 } 387 else name = fmap->u.pe.strtable + isym->N.Name.Long; 388 if (name[0] == '_') name++; 389 hash_table_iter_init(&module->ht_symbols, &hti, name); 390 while ((ptr = hash_table_iter_up(&hti))) 391 { 392 sym = CONTAINING_RECORD(ptr, struct symt_data, hash_elt); 393 if (sym->symt.tag == SymTagData && 394 (sym->kind == DataIsGlobal || sym->kind == DataIsFileStatic) && 395 sym->u.var.kind == loc_absolute && 396 !strcmp(sym->hash_elt.name, name)) 397 { 398 TRACE("Changing absolute address for %d.%s: %lx -> %s\n", 399 isym->SectionNumber, name, sym->u.var.offset, 400 wine_dbgstr_longlong(module->module.BaseOfImage + 401 fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress + 402 isym->Value)); 403 sym->u.var.offset = module->module.BaseOfImage + 404 fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress + isym->Value; 405 break; 406 } 407 } 408 } 409 naux = isym->NumberOfAuxSymbols + 1; 410 } 411 pe_unmap_full(fmap); 412 return TRUE; 413 } 414 415 /****************************************************************** 416 * pe_load_coff_symbol_table 417 * 418 * Load public symbols out of the COFF symbol table (if any). 419 */ 420 static BOOL pe_load_coff_symbol_table(struct module* module) 421 { 422 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap; 423 const IMAGE_SYMBOL* isym; 424 int i, numsym, naux; 425 const char* strtable; 426 char tmp[9]; 427 const char* name; 428 const char* lastfilename = NULL; 429 struct symt_compiland* compiland = NULL; 430 const IMAGE_SECTION_HEADER* sect; 431 const char* mapping; 432 433 numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols; 434 if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym) 435 return TRUE; 436 if (!(mapping = pe_map_full(fmap, NULL))) return FALSE; 437 isym = (const IMAGE_SYMBOL*)((const char*)mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable); 438 /* FIXME: no way to get strtable size */ 439 strtable = (const char*)&isym[numsym]; 440 sect = IMAGE_FIRST_SECTION(RtlImageNtHeader((HMODULE)mapping)); 441 442 for (i = 0; i < numsym; i+= naux, isym += naux) 443 { 444 if (isym->StorageClass == IMAGE_SYM_CLASS_FILE) 445 { 446 lastfilename = (const char*)(isym + 1); 447 compiland = NULL; 448 } 449 if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL && 450 isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections) 451 { 452 if (isym->N.Name.Short) 453 { 454 name = memcpy(tmp, isym->N.ShortName, 8); 455 tmp[8] = '\0'; 456 } 457 else name = strtable + isym->N.Name.Long; 458 if (name[0] == '_') name++; 459 460 if (!compiland && lastfilename) 461 compiland = symt_new_compiland(module, 0, 462 source_new(module, NULL, lastfilename)); 463 464 if (!(dbghelp_options & SYMOPT_NO_PUBLICS)) 465 symt_new_public(module, compiland, name, FALSE, 466 module->module.BaseOfImage + sect[isym->SectionNumber - 1].VirtualAddress + 467 isym->Value, 468 1); 469 } 470 naux = isym->NumberOfAuxSymbols + 1; 471 } 472 module->module.SymType = SymCoff; 473 module->module.LineNumbers = FALSE; 474 module->module.GlobalSymbols = FALSE; 475 module->module.TypeInfo = FALSE; 476 module->module.SourceIndexed = FALSE; 477 module->module.Publics = TRUE; 478 pe_unmap_full(fmap); 479 480 return TRUE; 481 } 482 483 /****************************************************************** 484 * pe_load_stabs 485 * 486 * look for stabs information in PE header (it's how the mingw compiler provides 487 * its debugging information) 488 */ 489 static BOOL pe_load_stabs(const struct process* pcs, struct module* module) 490 { 491 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap; 492 struct image_section_map sect_stabs, sect_stabstr; 493 BOOL ret = FALSE; 494 495 if (pe_find_section(fmap, ".stab", §_stabs) && pe_find_section(fmap, ".stabstr", §_stabstr)) 496 { 497 const char* stab; 498 const char* stabstr; 499 500 stab = image_map_section(§_stabs); 501 stabstr = image_map_section(§_stabstr); 502 if (stab != IMAGE_NO_MAP && stabstr != IMAGE_NO_MAP) 503 { 504 ret = stabs_parse(module, 505 module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase, 506 stab, image_get_map_size(§_stabs) / sizeof(struct stab_nlist), sizeof(struct stab_nlist), 507 stabstr, image_get_map_size(§_stabstr), 508 NULL, NULL); 509 } 510 image_unmap_section(§_stabs); 511 image_unmap_section(§_stabstr); 512 if (ret) pe_locate_with_coff_symbol_table(module); 513 } 514 TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load"); 515 516 return ret; 517 } 518 519 /****************************************************************** 520 * pe_load_dwarf 521 * 522 * look for dwarf information in PE header (it's also a way for the mingw compiler 523 * to provide its debugging information) 524 */ 525 static BOOL pe_load_dwarf(struct module* module) 526 { 527 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap; 528 BOOL ret; 529 530 ret = dwarf2_parse(module, 531 module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase, 532 NULL, /* FIXME: some thunks to deal with ? */ 533 fmap); 534 TRACE("%s the DWARF debug info\n", ret ? "successfully loaded" : "failed to load"); 535 536 return ret; 537 } 538 539 #ifndef DBGHELP_STATIC_LIB 540 /****************************************************************** 541 * pe_load_rsym 542 * 543 * look for ReactOS's own rsym format 544 */ 545 static BOOL pe_load_rsym(struct module* module) 546 { 547 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap; 548 struct image_section_map sect_rsym; 549 BOOL ret = FALSE; 550 551 if (pe_find_section(fmap, ".rossym", §_rsym)) 552 { 553 const char* rsym = image_map_section(§_rsym); 554 if (rsym != IMAGE_NO_MAP) 555 { 556 ret = rsym_parse(module, module->module.BaseOfImage, 557 rsym, image_get_map_size(§_rsym)); 558 } 559 image_unmap_section(§_rsym); 560 } 561 TRACE("%s the RSYM debug info\n", ret ? "successfully loaded" : "failed to load"); 562 563 return ret; 564 } 565 566 /****************************************************************** 567 * pe_load_dbg_file 568 * 569 * loads a .dbg file 570 */ 571 static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module, 572 const char* dbg_name, DWORD timestamp) 573 { 574 WCHAR tmp[MAX_PATH]; 575 HANDLE hFile = INVALID_HANDLE_VALUE, hMap = 0; 576 const BYTE* dbg_mapping = NULL; 577 BOOL ret = FALSE; 578 579 TRACE("Processing DBG file %s\n", debugstr_a(dbg_name)); 580 581 if (path_find_symbol_file(pcs, module, dbg_name, DMT_DBG, NULL, timestamp, 0, tmp, &module->module.DbgUnmatched) && 582 (hFile = CreateFileW(tmp, GENERIC_READ, FILE_SHARE_READ, NULL, 583 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE && 584 ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) && 585 ((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL)) 586 { 587 const IMAGE_SEPARATE_DEBUG_HEADER* hdr; 588 const IMAGE_SECTION_HEADER* sectp; 589 const IMAGE_DEBUG_DIRECTORY* dbg; 590 591 hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping; 592 /* section headers come immediately after debug header */ 593 sectp = (const IMAGE_SECTION_HEADER*)(hdr + 1); 594 /* and after that and the exported names comes the debug directory */ 595 dbg = (const IMAGE_DEBUG_DIRECTORY*) 596 (dbg_mapping + sizeof(*hdr) + 597 hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) + 598 hdr->ExportedNamesSize); 599 600 ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp, 601 hdr->NumberOfSections, dbg, 602 hdr->DebugDirectorySize / sizeof(*dbg)); 603 } 604 else 605 ERR("Couldn't find .DBG file %s (%s)\n", debugstr_a(dbg_name), debugstr_w(tmp)); 606 607 if (dbg_mapping) UnmapViewOfFile(dbg_mapping); 608 if (hMap) CloseHandle(hMap); 609 if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile); 610 return ret; 611 } 612 613 /****************************************************************** 614 * pe_load_msc_debug_info 615 * 616 * Process MSC debug information in PE file. 617 */ 618 static BOOL pe_load_msc_debug_info(const struct process* pcs, struct module* module) 619 { 620 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap; 621 BOOL ret = FALSE; 622 const IMAGE_DEBUG_DIRECTORY*dbg; 623 ULONG nDbg; 624 void* mapping; 625 IMAGE_NT_HEADERS* nth; 626 627 if (!(mapping = pe_map_full(fmap, &nth))) return FALSE; 628 /* Read in debug directory */ 629 dbg = RtlImageDirectoryEntryToData( mapping, FALSE, IMAGE_DIRECTORY_ENTRY_DEBUG, &nDbg ); 630 if (!dbg || !(nDbg /= sizeof(IMAGE_DEBUG_DIRECTORY))) goto done; 631 632 /* Parse debug directory */ 633 if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED) 634 { 635 /* Debug info is stripped to .DBG file */ 636 const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*) 637 ((const char*)mapping + dbg->PointerToRawData); 638 639 if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC || 640 misc->DataType != IMAGE_DEBUG_MISC_EXENAME) 641 { 642 ERR("-Debug info stripped, but no .DBG file in module %s\n", 643 debugstr_w(module->module.ModuleName)); 644 } 645 else 646 { 647 ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp); 648 } 649 } 650 else 651 { 652 const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader); 653 /* Debug info is embedded into PE module */ 654 ret = pe_load_debug_directory(pcs, module, mapping, sectp, 655 nth->FileHeader.NumberOfSections, dbg, nDbg); 656 } 657 done: 658 pe_unmap_full(fmap); 659 return ret; 660 } 661 #endif /* DBGHELP_STATIC_LIB */ 662 663 /*********************************************************************** 664 * pe_load_export_debug_info 665 */ 666 static BOOL pe_load_export_debug_info(const struct process* pcs, struct module* module) 667 { 668 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap; 669 unsigned int i; 670 const IMAGE_EXPORT_DIRECTORY* exports; 671 DWORD base = module->module.BaseOfImage; 672 DWORD size; 673 IMAGE_NT_HEADERS* nth; 674 void* mapping; 675 676 if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE; 677 678 if (!(mapping = pe_map_full(fmap, &nth))) return FALSE; 679 #if 0 680 /* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */ 681 /* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */ 682 symt_new_public(module, NULL, module->module.ModuleName, FALSE, base, 1); 683 #endif 684 685 /* Add entry point */ 686 symt_new_public(module, NULL, "EntryPoint", FALSE, 687 base + nth->OptionalHeader.AddressOfEntryPoint, 1); 688 #if 0 689 /* FIXME: we'd better store addresses linked to sections rather than 690 absolute values */ 691 IMAGE_SECTION_HEADER* section; 692 /* Add start of sections */ 693 section = (IMAGE_SECTION_HEADER*) 694 ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader); 695 for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++) 696 { 697 symt_new_public(module, NULL, section->Name, FALSE, 698 RtlImageRvaToVa(nth, mapping, section->VirtualAddress, NULL), 1); 699 } 700 #endif 701 702 /* Add exported functions */ 703 if ((exports = RtlImageDirectoryEntryToData(mapping, FALSE, 704 IMAGE_DIRECTORY_ENTRY_EXPORT, &size))) 705 { 706 const WORD* ordinals = NULL; 707 const DWORD_PTR* functions = NULL; 708 const DWORD* names = NULL; 709 unsigned int j; 710 char buffer[16]; 711 712 functions = RtlImageRvaToVa(nth, mapping, exports->AddressOfFunctions, NULL); 713 ordinals = RtlImageRvaToVa(nth, mapping, exports->AddressOfNameOrdinals, NULL); 714 names = RtlImageRvaToVa(nth, mapping, exports->AddressOfNames, NULL); 715 716 if (functions && ordinals && names) 717 { 718 for (i = 0; i < exports->NumberOfNames; i++) 719 { 720 if (!names[i]) continue; 721 symt_new_public(module, NULL, 722 RtlImageRvaToVa(nth, mapping, names[i], NULL), 723 FALSE, 724 base + functions[ordinals[i]], 1); 725 } 726 727 for (i = 0; i < exports->NumberOfFunctions; i++) 728 { 729 if (!functions[i]) continue; 730 /* Check if we already added it with a name */ 731 for (j = 0; j < exports->NumberOfNames; j++) 732 if ((ordinals[j] == i) && names[j]) break; 733 if (j < exports->NumberOfNames) continue; 734 snprintf(buffer, sizeof(buffer), "%d", i + exports->Base); 735 symt_new_public(module, NULL, buffer, FALSE, base + (DWORD)functions[i], 1); 736 } 737 } 738 } 739 /* no real debug info, only entry points */ 740 if (module->module.SymType == SymDeferred) 741 module->module.SymType = SymExport; 742 pe_unmap_full(fmap); 743 744 return TRUE; 745 } 746 747 /****************************************************************** 748 * pe_load_debug_info 749 * 750 */ 751 BOOL pe_load_debug_info(const struct process* pcs, struct module* module) 752 { 753 BOOL ret = FALSE; 754 755 if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY)) 756 { 757 ret = image_check_alternate(&module->format_info[DFI_PE]->u.pe_info->fmap, module); 758 ret = pe_load_stabs(pcs, module) || ret; 759 ret = pe_load_dwarf(module) || ret; 760 #ifndef DBGHELP_STATIC_LIB 761 ret = pe_load_msc_debug_info(pcs, module) || ret; 762 ret = pe_load_rsym(module) || ret; 763 #endif 764 765 ret = ret || pe_load_coff_symbol_table(module); /* FIXME */ 766 /* if we still have no debug info (we could only get SymExport at this 767 * point), then do the SymExport except if we have an ELF container, 768 * in which case we'll rely on the export's on the ELF side 769 */ 770 } 771 /* FIXME shouldn't we check that? if (!module_get_debug(pcs, module)) */ 772 if (pe_load_export_debug_info(pcs, module) && !ret) 773 ret = TRUE; 774 775 return ret; 776 } 777 778 #ifndef __REACTOS__ 779 struct builtin_search 780 { 781 WCHAR *path; 782 struct image_file_map fmap; 783 }; 784 785 static BOOL search_builtin_pe(void *param, HANDLE handle, const WCHAR *path) 786 { 787 struct builtin_search *search = param; 788 size_t size; 789 790 if (!pe_map_file(handle, &search->fmap, DMT_PE)) return FALSE; 791 792 size = (lstrlenW(path) + 1) * sizeof(WCHAR); 793 if ((search->path = heap_alloc(size))) 794 memcpy(search->path, path, size); 795 return TRUE; 796 } 797 #endif 798 799 /****************************************************************** 800 * pe_load_native_module 801 * 802 */ 803 struct module* pe_load_native_module(struct process* pcs, const WCHAR* name, 804 HANDLE hFile, DWORD64 base, DWORD size) 805 { 806 struct module* module = NULL; 807 BOOL opened = FALSE; 808 struct module_format* modfmt; 809 WCHAR loaded_name[MAX_PATH]; 810 811 loaded_name[0] = '\0'; 812 if (!hFile) 813 { 814 assert(name); 815 816 if ((hFile = FindExecutableImageExW(name, pcs->search_path, loaded_name, NULL, NULL)) == NULL) 817 return NULL; 818 opened = TRUE; 819 } 820 else if (name) lstrcpyW(loaded_name, name); 821 else if (dbghelp_options & SYMOPT_DEFERRED_LOADS) 822 FIXME("Trouble ahead (no module name passed in deferred mode)\n"); 823 if (!(modfmt = HeapAlloc(GetProcessHeap(), 0, sizeof(struct module_format) + sizeof(struct pe_module_info)))) 824 return NULL; 825 modfmt->u.pe_info = (struct pe_module_info*)(modfmt + 1); 826 if (pe_map_file(hFile, &modfmt->u.pe_info->fmap, DMT_PE)) 827 { 828 #ifndef __REACTOS__ 829 struct builtin_search builtin = { NULL }; 830 if (modfmt->u.pe_info->fmap.u.pe.builtin && search_dll_path(pcs, loaded_name, search_builtin_pe, &builtin)) 831 { 832 TRACE("reloaded %s from %s\n", debugstr_w(loaded_name), debugstr_w(builtin.path)); 833 image_unmap_file(&modfmt->u.pe_info->fmap); 834 modfmt->u.pe_info->fmap = builtin.fmap; 835 } 836 #endif 837 if (!base) base = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.ImageBase; 838 if (!size) size = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.SizeOfImage; 839 840 module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size, 841 modfmt->u.pe_info->fmap.u.pe.ntheader.FileHeader.TimeDateStamp, 842 modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.CheckSum); 843 if (module) 844 { 845 #ifdef __REACTOS__ 846 module->real_path = NULL; 847 #else 848 module->real_path = builtin.path; 849 #endif 850 modfmt->module = module; 851 modfmt->remove = pe_module_remove; 852 modfmt->loc_compute = NULL; 853 854 module->format_info[DFI_PE] = modfmt; 855 if (dbghelp_options & SYMOPT_DEFERRED_LOADS) 856 module->module.SymType = SymDeferred; 857 else 858 pe_load_debug_info(pcs, module); 859 module->reloc_delta = base - modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.ImageBase; 860 } 861 else 862 { 863 ERR("could not load the module '%s'\n", debugstr_w(loaded_name)); 864 #ifndef __REACTOS__ 865 heap_free(builtin.path); 866 #endif 867 image_unmap_file(&modfmt->u.pe_info->fmap); 868 } 869 } 870 if (!module) HeapFree(GetProcessHeap(), 0, modfmt); 871 872 if (opened) CloseHandle(hFile); 873 874 return module; 875 } 876 877 /****************************************************************** 878 * pe_load_nt_header 879 * 880 */ 881 BOOL pe_load_nt_header(HANDLE hProc, DWORD64 base, IMAGE_NT_HEADERS* nth) 882 { 883 IMAGE_DOS_HEADER dos; 884 885 return ReadProcessMemory(hProc, (char*)(DWORD_PTR)base, &dos, sizeof(dos), NULL) && 886 dos.e_magic == IMAGE_DOS_SIGNATURE && 887 ReadProcessMemory(hProc, (char*)(DWORD_PTR)(base + dos.e_lfanew), 888 nth, sizeof(*nth), NULL) && 889 nth->Signature == IMAGE_NT_SIGNATURE; 890 } 891 892 /****************************************************************** 893 * pe_load_builtin_module 894 * 895 */ 896 struct module* pe_load_builtin_module(struct process* pcs, const WCHAR* name, 897 DWORD64 base, DWORD64 size) 898 { 899 struct module* module = NULL; 900 901 if (base && pcs->dbg_hdr_addr) 902 { 903 IMAGE_NT_HEADERS nth; 904 905 if (pe_load_nt_header(pcs->handle, base, &nth)) 906 { 907 if (!size) size = nth.OptionalHeader.SizeOfImage; 908 module = module_new(pcs, name, DMT_PE, FALSE, base, size, 909 nth.FileHeader.TimeDateStamp, 910 nth.OptionalHeader.CheckSum); 911 } 912 } 913 return module; 914 } 915 916 /*********************************************************************** 917 * ImageDirectoryEntryToDataEx (DBGHELP.@) 918 * 919 * Search for specified directory in PE image 920 * 921 * PARAMS 922 * 923 * base [in] Image base address 924 * image [in] TRUE - image has been loaded by loader, FALSE - raw file image 925 * dir [in] Target directory index 926 * size [out] Receives directory size 927 * section [out] Receives pointer to section header of section containing directory data 928 * 929 * RETURNS 930 * Success: pointer to directory data 931 * Failure: NULL 932 * 933 */ 934 PVOID WINAPI ImageDirectoryEntryToDataEx( PVOID base, BOOLEAN image, USHORT dir, PULONG size, PIMAGE_SECTION_HEADER *section ) 935 { 936 const IMAGE_NT_HEADERS *nt; 937 DWORD addr; 938 939 *size = 0; 940 if (section) *section = NULL; 941 942 if (!(nt = RtlImageNtHeader( base ))) return NULL; 943 if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC) 944 { 945 const IMAGE_NT_HEADERS64 *nt64 = (const IMAGE_NT_HEADERS64 *)nt; 946 947 if (dir >= nt64->OptionalHeader.NumberOfRvaAndSizes) return NULL; 948 if (!(addr = nt64->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL; 949 *size = nt64->OptionalHeader.DataDirectory[dir].Size; 950 if (image || addr < nt64->OptionalHeader.SizeOfHeaders) return (char *)base + addr; 951 } 952 else if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) 953 { 954 const IMAGE_NT_HEADERS32 *nt32 = (const IMAGE_NT_HEADERS32 *)nt; 955 956 if (dir >= nt32->OptionalHeader.NumberOfRvaAndSizes) return NULL; 957 if (!(addr = nt32->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL; 958 *size = nt32->OptionalHeader.DataDirectory[dir].Size; 959 if (image || addr < nt32->OptionalHeader.SizeOfHeaders) return (char *)base + addr; 960 } 961 else return NULL; 962 963 return RtlImageRvaToVa( nt, base, addr, section ); 964 } 965 966 /*********************************************************************** 967 * ImageDirectoryEntryToData (DBGHELP.@) 968 * 969 * NOTES 970 * See ImageDirectoryEntryToDataEx 971 */ 972 PVOID WINAPI ImageDirectoryEntryToData( PVOID base, BOOLEAN image, USHORT dir, PULONG size ) 973 { 974 return ImageDirectoryEntryToDataEx( base, image, dir, size, NULL ); 975 } 976