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