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 static void* pe_map_full(struct image_file_map* fmap, IMAGE_NT_HEADERS** nth)
  40 {
  41     if (!fmap->u.pe.full_map)
  42     {
  43         fmap->u.pe.full_map = MapViewOfFile(fmap->u.pe.hMap, FILE_MAP_READ, 0, 0, 0);
  44     }
  45     if (fmap->u.pe.full_map)
  46     {
  47         if (nth) *nth = RtlImageNtHeader(fmap->u.pe.full_map);
  48         fmap->u.pe.full_count++;
  49         return fmap->u.pe.full_map;
  50     }
  51     return IMAGE_NO_MAP;
  52 }
  53
  54 static void pe_unmap_full(struct image_file_map* fmap)
  55 {
  56     if (fmap->u.pe.full_count && !--fmap->u.pe.full_count)
  57     {
  58         UnmapViewOfFile(fmap->u.pe.full_map);
  59         fmap->u.pe.full_map = NULL;
  60     }
  61 }
  62
  63 /******************************************************************
  64  *              pe_map_section
  65  *
  66  * Maps a single section into memory from an PE file
  67  */
  68 const char* pe_map_section(struct image_section_map* ism)
  69 {
  70     void*       mapping;
  71     struct pe_file_map* fmap = &ism->fmap->u.pe;
  72
  73     if (ism->sidx >= 0 && ism->sidx < fmap->ntheader.FileHeader.NumberOfSections &&
  74         fmap->sect[ism->sidx].mapped == IMAGE_NO_MAP)
  75     {
  76         IMAGE_NT_HEADERS*       nth;
  77         /* FIXME: that's rather drastic, but that will do for now
  78          * that's ok if the full file map exists, but we could be less agressive otherwise and
  79          * only map the relevant section
  80          */
  81         if ((mapping = pe_map_full(ism->fmap, &nth)))
  82         {
  83             fmap->sect[ism->sidx].mapped = RtlImageRvaToVa(nth, mapping,
  84                                                            fmap->sect[ism->sidx].shdr.VirtualAddress,
  85                                                            NULL);
  86             return fmap->sect[ism->sidx].mapped;
  87         }
  88     }
  89     return IMAGE_NO_MAP;
  90 }
  91
  92 /******************************************************************
  93  *              pe_find_section
  94  *
  95  * Finds a section by name (and type) into memory from an PE file
  96  * or its alternate if any
  97  */
  98 BOOL pe_find_section(struct image_file_map* fmap, const char* name,
  99                      struct image_section_map* ism)
 100 {
 101     const char*                 sectname;
 102     unsigned                    i;
 103     char                        tmp[IMAGE_SIZEOF_SHORT_NAME + 1];
 104
 105     for (i = 0; i < fmap->u.pe.ntheader.FileHeader.NumberOfSections; i++)
 106     {
 107         sectname = (const char*)fmap->u.pe.sect[i].shdr.Name;
 108         /* long section names start with a '/' (at least on MinGW32) */
 109         if (sectname[0] == '/' && fmap->u.pe.strtable)
 110             sectname = fmap->u.pe.strtable + atoi(sectname + 1);
 111         else
 112         {
 113             /* the section name may not be null terminated */
 114             sectname = memcpy(tmp, sectname, IMAGE_SIZEOF_SHORT_NAME);
 115             tmp[IMAGE_SIZEOF_SHORT_NAME] = '\0';
 116         }
 117         if (!strcasecmp(sectname, name))
 118         {
 119             ism->fmap = fmap;
 120             ism->sidx = i;
 121             return TRUE;
 122         }
 123     }
 124     ism->fmap = NULL;
 125     ism->sidx = -1;
 126
 127     return FALSE;
 128 }
 129
 130 /******************************************************************
 131  *              pe_unmap_section
 132  *
 133  * Unmaps a single section from memory
 134  */
 135 void pe_unmap_section(struct image_section_map* ism)
 136 {
 137     if (ism->sidx >= 0 && ism->sidx < ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections &&
 138         ism->fmap->u.pe.sect[ism->sidx].mapped != IMAGE_NO_MAP)
 139     {
 140         pe_unmap_full(ism->fmap);
 141         ism->fmap->u.pe.sect[ism->sidx].mapped = IMAGE_NO_MAP;
 142     }
 143 }
 144
 145 /******************************************************************
 146  *              pe_get_map_size
 147  *
 148  * Get the size of an PE section
 149  */
 150 unsigned pe_get_map_size(const struct image_section_map* ism)
 151 {
 152     if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 153         return 0;
 154     return ism->fmap->u.pe.sect[ism->sidx].shdr.SizeOfRawData;
 155 }
 156
 157 /******************************************************************
 158  *              pe_map_file
 159  *
 160  * Maps an PE file into memory (and checks it's a real PE file)
 161  */
 162 static BOOL pe_map_file(HANDLE file, struct image_file_map* fmap, enum module_type mt)
 163 {
 164     void*       mapping;
 165
 166     fmap->modtype = mt;
 167     fmap->u.pe.hMap = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
 168     if (fmap->u.pe.hMap == 0) return FALSE;
 169     fmap->u.pe.full_count = 0;
 170     fmap->u.pe.full_map = NULL;
 171     if (!(mapping = pe_map_full(fmap, NULL))) goto error;
 172
 173     switch (mt)
 174     {
 175     case DMT_PE:
 176         {
 177             IMAGE_NT_HEADERS*       nthdr;
 178             IMAGE_SECTION_HEADER*   section;
 179             unsigned                i;
 180
 181             if (!(nthdr = RtlImageNtHeader(mapping))) goto error;
 182             memcpy(&fmap->u.pe.ntheader, nthdr, sizeof(fmap->u.pe.ntheader));
 183             section = (IMAGE_SECTION_HEADER*)
 184                 ((char*)&nthdr->OptionalHeader + nthdr->FileHeader.SizeOfOptionalHeader);
 185             fmap->u.pe.sect = HeapAlloc(GetProcessHeap(), 0,
 186                                         nthdr->FileHeader.NumberOfSections * sizeof(fmap->u.pe.sect[0]));
 187             if (!fmap->u.pe.sect) goto error;
 188             for (i = 0; i < nthdr->FileHeader.NumberOfSections; i++)
 189             {
 190                 memcpy(&fmap->u.pe.sect[i].shdr, section + i, sizeof(IMAGE_SECTION_HEADER));
 191                 fmap->u.pe.sect[i].mapped = IMAGE_NO_MAP;
 192             }
 193             if (nthdr->FileHeader.PointerToSymbolTable && nthdr->FileHeader.NumberOfSymbols)
 194             {
 195                 /* FIXME ugly: should rather map the relevant content instead of copying it */
 196                 const char* src = (const char*)mapping +
 197                     nthdr->FileHeader.PointerToSymbolTable +
 198                     nthdr->FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL);
 199                 char* dst;
 200                 DWORD sz = *(DWORD*)src;
 201
 202                 if ((dst = HeapAlloc(GetProcessHeap(), 0, sz)))
 203                     memcpy(dst, src, sz);
 204                 fmap->u.pe.strtable = dst;
 205             }
 206             else fmap->u.pe.strtable = NULL;
 207         }
 208         break;
 209     default: assert(0); goto error;
 210     }
 211     pe_unmap_full(fmap);
 212
 213     return TRUE;
 214 error:
 215     pe_unmap_full(fmap);
 216     CloseHandle(fmap->u.pe.hMap);
 217     return FALSE;
 218 }
 219
 220 /******************************************************************
 221  *              pe_unmap_file
 222  *
 223  * Unmaps an PE file from memory (previously mapped with pe_map_file)
 224  */
 225 static void pe_unmap_file(struct image_file_map* fmap)
 226 {
 227     if (fmap->u.pe.hMap != 0)
 228     {
 229         struct image_section_map  ism;
 230         ism.fmap = fmap;
 231         for (ism.sidx = 0; ism.sidx < fmap->u.pe.ntheader.FileHeader.NumberOfSections; ism.sidx++)
 232         {
 233             pe_unmap_section(&ism);
 234         }
 235         while (fmap->u.pe.full_count) pe_unmap_full(fmap);
 236         HeapFree(GetProcessHeap(), 0, fmap->u.pe.sect);
 237         HeapFree(GetProcessHeap(), 0, (void*)fmap->u.pe.strtable); /* FIXME ugly (see pe_map_file) */
 238         CloseHandle(fmap->u.pe.hMap);
 239     }
 240 }
 241
 242 /******************************************************************
 243  *              pe_locate_with_coff_symbol_table
 244  *
 245  * Use the COFF symbol table (if any) from the IMAGE_FILE_HEADER to set the absolute address
 246  * of global symbols.
 247  * Mingw32 requires this for stabs debug information as address for global variables isn't filled in
 248  * (this is similar to what is done in elf_module.c when using the .symtab ELF section)
 249  */
 250 static BOOL pe_locate_with_coff_symbol_table(struct module* module, struct image_file_map* fmap)
 251 {
 252     const IMAGE_SYMBOL* isym;
 253     int                 i, numsym, naux;
 254     char                tmp[9];
 255     const char*         name;
 256     struct hash_table_iter      hti;
 257     void*               ptr;
 258     struct symt_data*   sym;
 259     const char*         mapping;
 260
 261     numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
 262     if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
 263         return TRUE;
 264     if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
 265     isym = (const IMAGE_SYMBOL*)(mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
 266
 267     for (i = 0; i < numsym; i+= naux, isym += naux)
 268     {
 269         if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
 270             isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 271         {
 272             if (isym->N.Name.Short)
 273             {
 274                 name = memcpy(tmp, isym->N.ShortName, 8);
 275                 tmp[8] = '\0';
 276             }
 277             else name = fmap->u.pe.strtable + isym->N.Name.Long;
 278             if (name[0] == '_') name++;
 279             hash_table_iter_init(&module->ht_symbols, &hti, name);
 280             while ((ptr = hash_table_iter_up(&hti)))
 281             {
 282                 sym = GET_ENTRY(ptr, struct symt_data, hash_elt);
 283                 if (sym->symt.tag == SymTagData &&
 284                     (sym->kind == DataIsGlobal || sym->kind == DataIsFileStatic) &&
 285                     !strcmp(sym->hash_elt.name, name))
 286                 {
 287                     TRACE("Changing absolute address for %d.%s: %lx -> %s\n",
 288                           isym->SectionNumber, name, sym->u.var.offset,
 289                           wine_dbgstr_longlong(module->module.BaseOfImage +
 290                                                fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress +
 291                                                isym->Value));
 292                     sym->u.var.offset = module->module.BaseOfImage +
 293                         fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress + isym->Value;
 294                     break;
 295                 }
 296             }
 297         }
 298         naux = isym->NumberOfAuxSymbols + 1;
 299     }
 300     pe_unmap_full(fmap);
 301     return TRUE;
 302 }
 303
 304 /******************************************************************
 305  *              pe_load_coff_symbol_table
 306  *
 307  * Load public symbols out of the COFF symbol table (if any).
 308  */
 309 static BOOL pe_load_coff_symbol_table(struct module* module, struct image_file_map* fmap)
 310 {
 311     const IMAGE_SYMBOL* isym;
 312     int                 i, numsym, naux;
 313     const char*         strtable;
 314     char                tmp[9];
 315     const char*         name;
 316     const char*         lastfilename = NULL;
 317     struct symt_compiland*   compiland = NULL;
 318     const IMAGE_SECTION_HEADER* sect;
 319     const char*         mapping;
 320
 321     numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
 322     if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
 323         return TRUE;
 324     if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
 325     isym = (const IMAGE_SYMBOL*)((char*)mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
 326     /* FIXME: no way to get strtable size */
 327     strtable = (const char*)&isym[numsym];
 328     sect = IMAGE_FIRST_SECTION(&fmap->u.pe.ntheader);
 329
 330     for (i = 0; i < numsym; i+= naux, isym += naux)
 331     {
 332         if (isym->StorageClass == IMAGE_SYM_CLASS_FILE)
 333         {
 334             lastfilename = (const char*)(isym + 1);
 335             compiland = NULL;
 336         }
 337         if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
 338             isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 339         {
 340             if (isym->N.Name.Short)
 341             {
 342                 name = memcpy(tmp, isym->N.ShortName, 8);
 343                 tmp[8] = '\0';
 344             }
 345             else name = strtable + isym->N.Name.Long;
 346             if (name[0] == '_') name++;
 347
 348             if (!compiland && lastfilename)
 349                 compiland = symt_new_compiland(module, 0,
 350                                                source_new(module, NULL, lastfilename));
 351             symt_new_public(module, compiland, name,
 352                             module->module.BaseOfImage + sect[isym->SectionNumber - 1].VirtualAddress + isym->Value,
 353                             1);
 354         }
 355         naux = isym->NumberOfAuxSymbols + 1;
 356     }
 357     module->module.SymType = SymCoff;
 358     module->module.LineNumbers = FALSE;
 359     module->module.GlobalSymbols = FALSE;
 360     module->module.TypeInfo = FALSE;
 361     module->module.SourceIndexed = FALSE;
 362     module->module.Publics = TRUE;
 363     pe_unmap_full(fmap);
 364
 365     return TRUE;
 366 }
 367
 368 static inline void* pe_get_sect(IMAGE_NT_HEADERS* nth, void* mapping,
 369                                 IMAGE_SECTION_HEADER* sect)
 370 {
 371     return (sect) ? RtlImageRvaToVa(nth, mapping, sect->VirtualAddress, NULL) : NULL;
 372 }
 373
 374 static inline DWORD pe_get_sect_size(IMAGE_SECTION_HEADER* sect)
 375 {
 376     return (sect) ? sect->SizeOfRawData : 0;
 377 }
 378
 379 /******************************************************************
 380  *              pe_load_stabs
 381  *
 382  * look for stabs information in PE header (it's how the mingw compiler provides
 383  * its debugging information)
 384  */
 385 static BOOL pe_load_stabs(const struct process* pcs, struct module* module, struct image_file_map* fmap)
 386 {
 387     struct image_section_map    sect_stabs, sect_stabstr;
 388     BOOL                        ret = FALSE;
 389
 390     if (pe_find_section(fmap, ".stab", &sect_stabs) && pe_find_section(fmap, ".stabstr", &sect_stabstr))
 391     {
 392         const char* stab;
 393         const char* stabstr;
 394
 395         stab = image_map_section(&sect_stabs);
 396         stabstr = image_map_section(&sect_stabstr);
 397         if (stab != IMAGE_NO_MAP && stabstr != IMAGE_NO_MAP)
 398         {
 399             ret = stabs_parse(module,
 400                               module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
 401                               stab, image_get_map_size(&sect_stabs),
 402                               stabstr, image_get_map_size(&sect_stabstr),
 403                               NULL, NULL);
 404         }
 405         image_unmap_section(&sect_stabs);
 406         image_unmap_section(&sect_stabstr);
 407         if (ret) pe_locate_with_coff_symbol_table(module, fmap);
 408     }
 409     TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load");
 410
 411     return ret;
 412 }
 413
 414 /******************************************************************
 415  *              pe_load_dwarf
 416  *
 417  * look for dwarf information in PE header (it's also a way for the mingw compiler
 418  * to provide its debugging information)
 419  */
 420 static BOOL pe_load_dwarf(const struct process* pcs, struct module* module,
 421                           struct image_file_map* fmap)
 422 {
 423     struct image_section_map    sect_debuginfo, sect_debugstr, sect_debugabbrev, sect_debugline, sect_debugloc;
 424     BOOL                        ret = FALSE;
 425
 426     if (pe_find_section(fmap, ".debug_info", &sect_debuginfo))
 427     {
 428         const BYTE* dw2_debuginfo;
 429         const BYTE* dw2_debugabbrev;
 430         const BYTE* dw2_debugstr;
 431         const BYTE* dw2_debugline;
 432         const BYTE* dw2_debugloc;
 433
 434         pe_find_section(fmap, ".debug_str",    &sect_debugstr);
 435         pe_find_section(fmap, ".debug_abbrev", &sect_debugabbrev);
 436         pe_find_section(fmap, ".debug_line",   &sect_debugline);
 437         pe_find_section(fmap, ".debug_loc",    &sect_debugloc);
 438
 439         dw2_debuginfo   = (const BYTE*)image_map_section(&sect_debuginfo);
 440         dw2_debugabbrev = (const BYTE*)image_map_section(&sect_debugabbrev);
 441         dw2_debugstr    = (const BYTE*)image_map_section(&sect_debugstr);
 442         dw2_debugline   = (const BYTE*)image_map_section(&sect_debugline);
 443         dw2_debugloc    = (const BYTE*)image_map_section(&sect_debugloc);
 444
 445         if (dw2_debuginfo != IMAGE_NO_MAP && dw2_debugabbrev != IMAGE_NO_MAP && dw2_debugstr != IMAGE_NO_MAP)
 446         {
 447             ret = dwarf2_parse(module,
 448                                module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
 449                                NULL, /* FIXME: some thunks to deal with ? */
 450                                dw2_debuginfo,   image_get_map_size(&sect_debuginfo),
 451                                dw2_debugabbrev, image_get_map_size(&sect_debugabbrev),
 452                                dw2_debugstr,    image_get_map_size(&sect_debugstr),
 453                                dw2_debugline,   image_get_map_size(&sect_debugline),
 454                                dw2_debugloc,    image_get_map_size(&sect_debugloc));
 455         }
 456         image_unmap_section(&sect_debuginfo);
 457         image_unmap_section(&sect_debugabbrev);
 458         image_unmap_section(&sect_debugstr);
 459         image_unmap_section(&sect_debugline);
 460         image_unmap_section(&sect_debugloc);
 461     }
 462     TRACE("%s the DWARF debug info\n", ret ? "successfully loaded" : "failed to load");
 463
 464     return ret;
 465 }
 466
 467 /******************************************************************
 468  *              pe_load_dbg_file
 469  *
 470  * loads a .dbg file
 471  */
 472 static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module,
 473                              const char* dbg_name, DWORD timestamp)
 474 {
 475     char                                tmp[MAX_PATH];
 476     HANDLE                              hFile = INVALID_HANDLE_VALUE, hMap = 0;
 477     const BYTE*                         dbg_mapping = NULL;
 478     BOOL                                ret = FALSE;
 479
 480     TRACE("Processing DBG file %s\n", debugstr_a(dbg_name));
 481
 482     if (path_find_symbol_file(pcs, dbg_name, NULL, timestamp, 0, tmp, &module->module.DbgUnmatched) &&
 483         (hFile = CreateFileA(tmp, GENERIC_READ, FILE_SHARE_READ, NULL,
 484                              OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
 485         ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
 486         ((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
 487     {
 488         const IMAGE_SEPARATE_DEBUG_HEADER*      hdr;
 489         const IMAGE_SECTION_HEADER*             sectp;
 490         const IMAGE_DEBUG_DIRECTORY*            dbg;
 491
 492         hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping;
 493         /* section headers come immediately after debug header */
 494         sectp = (const IMAGE_SECTION_HEADER*)(hdr + 1);
 495         /* and after that and the exported names comes the debug directory */
 496         dbg = (const IMAGE_DEBUG_DIRECTORY*)
 497             (dbg_mapping + sizeof(*hdr) +
 498              hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
 499              hdr->ExportedNamesSize);
 500
 501         ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp,
 502                                       hdr->NumberOfSections, dbg,
 503                                       hdr->DebugDirectorySize / sizeof(*dbg));
 504     }
 505     else
 506         ERR("Couldn't find .DBG file %s (%s)\n", debugstr_a(dbg_name), debugstr_a(tmp));
 507
 508     if (dbg_mapping) UnmapViewOfFile(dbg_mapping);
 509     if (hMap) CloseHandle(hMap);
 510     if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
 511     return ret;
 512 }
 513
 514 /******************************************************************
 515  *              pe_load_msc_debug_info
 516  *
 517  * Process MSC debug information in PE file.
 518  */
 519 static BOOL pe_load_msc_debug_info(const struct process* pcs, struct module* module, struct image_file_map* fmap)
 520 {
 521     BOOL                        ret = FALSE;
 522     const IMAGE_DATA_DIRECTORY* dir;
 523     const IMAGE_DEBUG_DIRECTORY*dbg = NULL;
 524     int                         nDbg;
 525     void*                       mapping;
 526     IMAGE_NT_HEADERS*           nth;
 527
 528     if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
 529     /* Read in debug directory */
 530     dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG;
 531     nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY);
 532     if (!nDbg) goto done;
 533
 534     dbg = RtlImageRvaToVa(nth, mapping, dir->VirtualAddress, NULL);
 535
 536     /* Parse debug directory */
 537     if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED)
 538     {
 539         /* Debug info is stripped to .DBG file */
 540         const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*)
 541             ((const char*)mapping + dbg->PointerToRawData);
 542
 543         if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC ||
 544             misc->DataType != IMAGE_DEBUG_MISC_EXENAME)
 545         {
 546             WINE_ERR("-Debug info stripped, but no .DBG file in module %s\n",
 547                      debugstr_w(module->module.ModuleName));
 548         }
 549         else
 550         {
 551             ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp);
 552         }
 553     }
 554     else
 555     {
 556         const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
 557         /* Debug info is embedded into PE module */
 558         ret = pe_load_debug_directory(pcs, module, mapping, sectp,
 559                                       nth->FileHeader.NumberOfSections, dbg, nDbg);
 560     }
 561 done:
 562     pe_unmap_full(fmap);
 563     return ret;
 564 }
 565
 566 /***********************************************************************
 567  *                      pe_load_export_debug_info
 568  */
 569 static BOOL pe_load_export_debug_info(const struct process* pcs, struct module* module, struct image_file_map* fmap)
 570 {
 571     unsigned int                        i;
 572     const IMAGE_EXPORT_DIRECTORY*       exports;
 573     DWORD                               base = module->module.BaseOfImage;
 574     DWORD                               size;
 575     IMAGE_NT_HEADERS*                   nth;
 576     void*                               mapping;
 577
 578     if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE;
 579
 580     if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
 581 #if 0
 582     /* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */
 583     /* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */
 584     symt_new_public(module, NULL, module->module.ModuleName, base, 1);
 585 #endif
 586
 587     /* Add entry point */
 588     symt_new_public(module, NULL, "EntryPoint",
 589                     base + nth->OptionalHeader.AddressOfEntryPoint, 1);
 590 #if 0
 591     /* FIXME: we'd better store addresses linked to sections rather than
 592        absolute values */
 593     IMAGE_SECTION_HEADER*       section;
 594     /* Add start of sections */
 595     section = (IMAGE_SECTION_HEADER*)
 596         ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
 597     for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
 598     {
 599         symt_new_public(module, NULL, section->Name,
 600                         RtlImageRvaToVa(nth, mapping, section->VirtualAddress, NULL), 1);
 601     }
 602 #endif
 603
 604     /* Add exported functions */
 605     if ((exports = RtlImageDirectoryEntryToData(mapping, FALSE,
 606                                                 IMAGE_DIRECTORY_ENTRY_EXPORT, &size)))
 607     {
 608         const WORD*             ordinals = NULL;
 609         const DWORD_PTR*        functions = NULL;
 610         const DWORD*            names = NULL;
 611         unsigned int            j;
 612         char                    buffer[16];
 613
 614         functions = RtlImageRvaToVa(nth, mapping, exports->AddressOfFunctions, NULL);
 615         ordinals  = RtlImageRvaToVa(nth, mapping, exports->AddressOfNameOrdinals, NULL);
 616         names     = RtlImageRvaToVa(nth, mapping, exports->AddressOfNames, NULL);
 617
 618         if (functions && ordinals && names)
 619         {
 620             for (i = 0; i < exports->NumberOfNames; i++)
 621             {
 622                 if (!names[i]) continue;
 623                 symt_new_public(module, NULL,
 624                                 RtlImageRvaToVa(nth, mapping, names[i], NULL),
 625                                 base + functions[ordinals[i]], 1);
 626             }
 627
 628             for (i = 0; i < exports->NumberOfFunctions; i++)
 629             {
 630                 if (!functions[i]) continue;
 631                 /* Check if we already added it with a name */
 632                 for (j = 0; j < exports->NumberOfNames; j++)
 633                     if ((ordinals[j] == i) && names[j]) break;
 634                 if (j < exports->NumberOfNames) continue;
 635                 snprintf(buffer, sizeof(buffer), "%d", i + exports->Base);
 636                 symt_new_public(module, NULL, buffer, base + (DWORD)functions[i], 1);
 637             }
 638         }
 639     }
 640     /* no real debug info, only entry points */
 641     if (module->module.SymType == SymDeferred)
 642         module->module.SymType = SymExport;
 643     pe_unmap_full(fmap);
 644
 645     return TRUE;
 646 }
 647
 648 /******************************************************************
 649  *              pe_load_debug_info
 650  *
 651  */
 652 BOOL pe_load_debug_info_internal(const struct process* pcs, struct module* module,
 653                                  struct image_file_map* fmap)
 654 {
 655     BOOL                ret = FALSE;
 656
 657     if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
 658     {
 659         ret = pe_load_stabs(pcs, module, fmap) ||
 660             pe_load_dwarf(pcs, module, fmap) ||
 661             pe_load_msc_debug_info(pcs, module, fmap) ||
 662             pe_load_coff_symbol_table(module, fmap);
 663         /* if we still have no debug info (we could only get SymExport at this
 664          * point), then do the SymExport except if we have an ELF container,
 665          * in which case we'll rely on the export's on the ELF side
 666          */
 667     }
 668 /* FIXME shouldn't we check that? if (!module_get_debug(pcs, module))l */
 669     if (pe_load_export_debug_info(pcs, module, fmap) && !ret)
 670         ret = TRUE;
 671
 672     return ret;
 673 }
 674
 675 BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
 676 {
 677     BOOL                        ret = FALSE;
 678     HANDLE                      hFile;
 679     struct image_file_map       fmap;
 680
 681     hFile = CreateFileW(module->module.LoadedImageName, GENERIC_READ, FILE_SHARE_READ,
 682                         NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
 683     if (hFile == INVALID_HANDLE_VALUE) return FALSE;
 684     if (pe_map_file(hFile, &fmap, DMT_PE))
 685     {
 686         ret = pe_load_debug_info_internal(pcs, module, &fmap);
 687         pe_unmap_file(&fmap);
 688     }
 689     CloseHandle(hFile);
 690
 691     return ret;
 692 }
 693
 694 /******************************************************************
 695  *              pe_load_native_module
 696  *
 697  */
 698 struct module* pe_load_native_module(struct process* pcs, const WCHAR* name,
 699                                      HANDLE hFile, DWORD base, DWORD size)
 700 {
 701     struct module*              module = NULL;
 702     BOOL                        opened = FALSE;
 703     struct image_file_map       fmap;
 704     WCHAR                       loaded_name[MAX_PATH];
 705
 706     loaded_name[0] = '\0';
 707     if (!hFile)
 708     {
 709         assert(name);
 710
 711         if ((hFile = FindExecutableImageExW(name, pcs->search_path, loaded_name, NULL, NULL)) == NULL)
 712             return NULL;
 713         opened = TRUE;
 714     }
 715     else if (name) strcpyW(loaded_name, name);
 716     else if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
 717         FIXME("Trouble ahead (no module name passed in deferred mode)\n");
 718
 719     if (pe_map_file(hFile, &fmap, DMT_PE))
 720     {
 721         if (!base) base = fmap.u.pe.ntheader.OptionalHeader.ImageBase;
 722         if (!size) size = fmap.u.pe.ntheader.OptionalHeader.SizeOfImage;
 723
 724         module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size,
 725                             fmap.u.pe.ntheader.FileHeader.TimeDateStamp,
 726                             fmap.u.pe.ntheader.OptionalHeader.CheckSum);
 727         if (module)
 728         {
 729             if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
 730                 module->module.SymType = SymDeferred;
 731             else
 732                 pe_load_debug_info_internal(pcs, module, &fmap);
 733         }
 734         else ERR("could not load the module '%s'\n", debugstr_w(loaded_name));
 735         pe_unmap_file(&fmap);
 736     }
 737     if (opened) CloseHandle(hFile);
 738
 739     return module;
 740 }
 741
 742 /******************************************************************
 743  *              pe_load_nt_header
 744  *
 745  */
 746 BOOL pe_load_nt_header(HANDLE hProc, DWORD64 base, IMAGE_NT_HEADERS* nth)
 747 {
 748     IMAGE_DOS_HEADER    dos;
 749
 750     return ReadProcessMemory(hProc, (char*)(DWORD_PTR)base, &dos, sizeof(dos), NULL) &&
 751         dos.e_magic == IMAGE_DOS_SIGNATURE &&
 752         ReadProcessMemory(hProc, (char*)(DWORD_PTR)(base + dos.e_lfanew),
 753                           nth, sizeof(*nth), NULL) &&
 754         nth->Signature == IMAGE_NT_SIGNATURE;
 755 }
 756
 757 /******************************************************************
 758  *              pe_load_builtin_module
 759  *
 760  */
 761 struct module* pe_load_builtin_module(struct process* pcs, const WCHAR* name,
 762                                       DWORD64 base, DWORD64 size)
 763 {
 764     struct module*      module = NULL;
 765
 766     if (base && pcs->dbg_hdr_addr)
 767     {
 768         IMAGE_NT_HEADERS    nth;
 769
 770         if (pe_load_nt_header(pcs->handle, base, &nth))
 771         {
 772             if (!size) size = nth.OptionalHeader.SizeOfImage;
 773             module = module_new(pcs, name, DMT_PE, FALSE, base, size,
 774                                 nth.FileHeader.TimeDateStamp,
 775                                 nth.OptionalHeader.CheckSum);
 776         }
 777     }
 778     return module;
 779 }
 780
 781 /***********************************************************************
 782  *           ImageDirectoryEntryToDataEx (DBGHELP.@)
 783  *
 784  * Search for specified directory in PE image
 785  *
 786  * PARAMS
 787  *
 788  *   base    [in]  Image base address
 789  *   image   [in]  TRUE - image has been loaded by loader, FALSE - raw file image
 790  *   dir     [in]  Target directory index
 791  *   size    [out] Receives directory size
 792  *   section [out] Receives pointer to section header of section containing directory data
 793  *
 794  * RETURNS
 795  *   Success: pointer to directory data
 796  *   Failure: NULL
 797  *
 798  */
 799 PVOID WINAPI ImageDirectoryEntryToDataEx( PVOID base, BOOLEAN image, USHORT dir, PULONG size, PIMAGE_SECTION_HEADER *section )
 800 {
 801     const IMAGE_NT_HEADERS *nt;
 802     DWORD addr;
 803
 804     *size = 0;
 805     if (section) *section = NULL;
 806
 807     if (!(nt = RtlImageNtHeader( base ))) return NULL;
 808     if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
 809     if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
 810
 811     *size = nt->OptionalHeader.DataDirectory[dir].Size;
 812     if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
 813
 814     return RtlImageRvaToVa( nt, base, addr, section );
 815 }
 816
 817 /***********************************************************************
 818  *         ImageDirectoryEntryToData   (DBGHELP.@)
 819  *
 820  * NOTES
 821  *   See ImageDirectoryEntryToDataEx
 822  */
 823 PVOID WINAPI ImageDirectoryEntryToData( PVOID base, BOOLEAN image, USHORT dir, PULONG size )
 824 {
 825     return ImageDirectoryEntryToDataEx( base, image, dir, size, NULL );
 826 }