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