dlls/dbghelp/pe_module.c

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