loader/pe_image.c

   1 /*
   2  *  Copyright   1994    Eric Youndale & Erik Bos
   3  *  Copyright   1995    Martin von Löwis
   4  *  Copyright   1996-98 Marcus Meissner
   5  *
   6  *      based on Eric Youndale's pe-test and:
   7  *      ftp.microsoft.com:/developr/MSDN/OctCD/PEFILE.ZIP
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23 /* Notes:
  24  * Before you start changing something in this file be aware of the following:
  25  *
  26  * - There are several functions called recursively. In a very subtle and
  27  *   obscure way. DLLs can reference each other recursively etc.
  28  * - If you want to enhance, speed up or clean up something in here, think
  29  *   twice WHY it is implemented in that strange way. There is usually a reason.
  30  *   Though sometimes it might just be lazyness ;)
  31  * - In PE_MapImage, right before PE_fixup_imports() all external and internal
  32  *   state MUST be correct since this function can be called with the SAME image
  33  *   AGAIN. (Thats recursion for you.) That means MODREF.module and
  34  *   NE_MODULE.module32.
  35  */
  36
  37 #include "config.h"
  38
  39 #include <sys/types.h>
  40 #ifdef HAVE_SYS_MMAN_H
  41 #include <sys/mman.h>
  42 #endif
  43 #include <string.h>
  44 #include "wine/winbase16.h"
  45 #include "winerror.h"
  46 #include "snoop.h"
  47 #include "wine/server.h"
  48 #include "wine/debug.h"
  49
  50 WINE_DEFAULT_DEBUG_CHANNEL(win32);
  51 WINE_DECLARE_DEBUG_CHANNEL(delayhlp);
  52 WINE_DECLARE_DEBUG_CHANNEL(fixup);
  53 WINE_DECLARE_DEBUG_CHANNEL(module);
  54 WINE_DECLARE_DEBUG_CHANNEL(relay);
  55 WINE_DECLARE_DEBUG_CHANNEL(segment);
  56
  57
  58 static IMAGE_EXPORT_DIRECTORY *get_exports( HMODULE hmod )
  59 {
  60     IMAGE_EXPORT_DIRECTORY *ret = NULL;
  61     IMAGE_DATA_DIRECTORY *dir = PE_HEADER(hmod)->OptionalHeader.DataDirectory
  62                                 + IMAGE_DIRECTORY_ENTRY_EXPORT;
  63     if (dir->Size && dir->VirtualAddress)
  64         ret = (IMAGE_EXPORT_DIRECTORY *)((char *)hmod + dir->VirtualAddress);
  65     return ret;
  66 }
  67
  68 static IMAGE_IMPORT_DESCRIPTOR *get_imports( HMODULE hmod )
  69 {
  70     IMAGE_IMPORT_DESCRIPTOR *ret = NULL;
  71     IMAGE_DATA_DIRECTORY *dir = PE_HEADER(hmod)->OptionalHeader.DataDirectory
  72                                 + IMAGE_DIRECTORY_ENTRY_IMPORT;
  73     if (dir->Size && dir->VirtualAddress)
  74         ret = (IMAGE_IMPORT_DESCRIPTOR *)((char *)hmod + dir->VirtualAddress);
  75     return ret;
  76 }
  77
  78
  79 /* convert PE image VirtualAddress to Real Address */
  80 #define RVA(x) ((void *)((char *)load_addr+(unsigned int)(x)))
  81
  82 #define AdjustPtr(ptr,delta) ((char *)(ptr) + (delta))
  83
  84 void dump_exports( HMODULE hModule )
  85 {
  86   char          *Module;
  87   int           i, j;
  88   WORD          *ordinal;
  89   DWORD         *function,*functions;
  90   BYTE          **name;
  91   unsigned int load_addr = hModule;
  92
  93   DWORD rva_start = PE_HEADER(hModule)->OptionalHeader
  94                    .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
  95   DWORD rva_end = rva_start + PE_HEADER(hModule)->OptionalHeader
  96                    .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
  97   IMAGE_EXPORT_DIRECTORY *pe_exports = (IMAGE_EXPORT_DIRECTORY*)RVA(rva_start);
  98
  99   Module = (char*)RVA(pe_exports->Name);
 100   DPRINTF("*******EXPORT DATA*******\n");
 101   DPRINTF("Module name is %s, %ld functions, %ld names\n",
 102           Module, pe_exports->NumberOfFunctions, pe_exports->NumberOfNames);
 103
 104   ordinal = RVA(pe_exports->AddressOfNameOrdinals);
 105   functions = function = RVA(pe_exports->AddressOfFunctions);
 106   name = RVA(pe_exports->AddressOfNames);
 107
 108   DPRINTF(" Ord    RVA     Addr   Name\n" );
 109   for (i=0;i<pe_exports->NumberOfFunctions;i++, function++)
 110   {
 111       if (!*function) continue;  /* No such function */
 112       DPRINTF( "%4ld %08lx %p", i + pe_exports->Base, *function, RVA(*function) );
 113       /* Check if we have a name for it */
 114       for (j = 0; j < pe_exports->NumberOfNames; j++)
 115           if (ordinal[j] == i)
 116           {
 117               DPRINTF( "  %s", (char*)RVA(name[j]) );
 118               break;
 119           }
 120       if ((*function >= rva_start) && (*function <= rva_end))
 121           DPRINTF(" (forwarded -> %s)", (char *)RVA(*function));
 122       DPRINTF("\n");
 123   }
 124 }
 125
 126 /* Look up the specified function or ordinal in the export list:
 127  * If it is a string:
 128  *      - look up the name in the name list.
 129  *      - look up the ordinal with that index.
 130  *      - use the ordinal as offset into the functionlist
 131  * If it is an ordinal:
 132  *      - use ordinal-pe_export->Base as offset into the function list
 133  */
 134 static FARPROC PE_FindExportedFunction(
 135         WINE_MODREF *wm,        /* [in] WINE modreference */
 136         LPCSTR funcName,        /* [in] function name */
 137         int hint,
 138         BOOL snoop )
 139 {
 140         WORD                            * ordinals;
 141         DWORD                           * function;
 142         BYTE                            ** name, *ename = NULL;
 143         int                             i, ordinal;
 144         unsigned int                    load_addr = wm->module;
 145         DWORD                           rva_start, rva_end, addr;
 146         char                            * forward;
 147         IMAGE_EXPORT_DIRECTORY *exports = get_exports(wm->module);
 148
 149         if (HIWORD(funcName))
 150                 TRACE("(%s)\n",funcName);
 151         else
 152                 TRACE("(%d)\n",(int)funcName);
 153         if (!exports) {
 154                 /* Not a fatal problem, some apps do
 155                  * GetProcAddress(0,"RegisterPenApp") which triggers this
 156                  * case.
 157                  */
 158                 WARN("Module %08x(%s)/MODREF %p doesn't have a exports table.\n",wm->module,wm->modname,wm);
 159                 return NULL;
 160         }
 161         ordinals= RVA(exports->AddressOfNameOrdinals);
 162         function= RVA(exports->AddressOfFunctions);
 163         name    = RVA(exports->AddressOfNames);
 164         forward = NULL;
 165         rva_start = PE_HEADER(wm->module)->OptionalHeader
 166                 .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
 167         rva_end = rva_start + PE_HEADER(wm->module)->OptionalHeader
 168                 .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
 169
 170         if (HIWORD(funcName))
 171         {
 172             int min = 0, max = exports->NumberOfNames - 1;
 173
 174             /* first check the hint */
 175             if (hint >= 0 && hint <= max)
 176             {
 177                 ename = RVA(name[hint]);
 178                 if (!strcmp( ename, funcName ))
 179                 {
 180                     ordinal = ordinals[hint];
 181                     goto found;
 182                 }
 183             }
 184
 185             /* then do a binary search */
 186             while (min <= max)
 187             {
 188                 int res, pos = (min + max) / 2;
 189                 ename = RVA(name[pos]);
 190                 if (!(res = strcmp( ename, funcName )))
 191                 {
 192                     ordinal = ordinals[pos];
 193                     goto found;
 194                 }
 195                 if (res > 0) max = pos - 1;
 196                 else min = pos + 1;
 197             }
 198             return NULL;
 199         }
 200         else  /* find by ordinal */
 201         {
 202             ordinal = LOWORD(funcName) - exports->Base;
 203             if (snoop && name)  /* need to find a name for it */
 204             {
 205                 for (i = 0; i < exports->NumberOfNames; i++)
 206                     if (ordinals[i] == ordinal)
 207                     {
 208                         ename = RVA(name[i]);
 209                         break;
 210                     }
 211             }
 212         }
 213
 214  found:
 215         if (ordinal >= exports->NumberOfFunctions)
 216         {
 217             TRACE("     ordinal %ld out of range!\n", ordinal + exports->Base );
 218             return NULL;
 219         }
 220         addr = function[ordinal];
 221         if (!addr) return NULL;
 222         if ((addr < rva_start) || (addr >= rva_end))
 223         {
 224             FARPROC proc = RVA(addr);
 225             if (snoop)
 226             {
 227                 if (!ename) ename = "@";
 228                 proc = SNOOP_GetProcAddress(wm->module,ename,ordinal,proc);
 229             }
 230             return proc;
 231         }
 232         else  /* forward entry point */
 233         {
 234                 WINE_MODREF *wm_fw;
 235                 FARPROC proc;
 236                 char *forward = RVA(addr);
 237                 char module[256];
 238                 char *end = strchr(forward, '.');
 239
 240                 if (!end) return NULL;
 241                 if (end - forward >= sizeof(module)) return NULL;
 242                 memcpy( module, forward, end - forward );
 243                 module[end-forward] = 0;
 244                 if (!(wm_fw = MODULE_FindModule( module )))
 245                 {
 246                     ERR("module not found for forward '%s' used by '%s'\n", forward, wm->modname );
 247                     return NULL;
 248                 }
 249                 if (!(proc = MODULE_GetProcAddress( wm_fw->module, end + 1, -1, snoop )))
 250                     ERR("function not found for forward '%s' used by '%s'. If you are using builtin '%s', try using the native one instead.\n", forward, wm->modname, wm->modname );
 251                 return proc;
 252         }
 253 }
 254
 255 /****************************************************************
 256  *      PE_fixup_imports
 257  */
 258 DWORD PE_fixup_imports( WINE_MODREF *wm )
 259 {
 260     IMAGE_IMPORT_DESCRIPTOR     *pe_imp;
 261     unsigned int load_addr      = wm->module;
 262     int                         i,characteristics_detection=1;
 263     IMAGE_IMPORT_DESCRIPTOR *imports = get_imports(wm->module);
 264
 265     /* first, count the number of imported non-internal modules */
 266     pe_imp = imports;
 267     if (!pe_imp) return 0;
 268
 269     /* OK, now dump the import list */
 270     TRACE("Dumping imports list\n");
 271
 272     /* We assume that we have at least one import with !0 characteristics and
 273      * detect broken imports with all characteristics 0 (notably Borland) and
 274      * switch the detection off for them.
 275      */
 276     for (i = 0; pe_imp->Name ; pe_imp++) {
 277         if (!i && !pe_imp->u.Characteristics)
 278                 characteristics_detection = 0;
 279         if (characteristics_detection && !pe_imp->u.Characteristics)
 280                 break;
 281         i++;
 282     }
 283     if (!i) return 0;  /* no imports */
 284
 285     /* Allocate module dependency list */
 286     wm->nDeps = i;
 287     wm->deps  = HeapAlloc( GetProcessHeap(), 0, i*sizeof(WINE_MODREF *) );
 288
 289     /* load the imported modules. They are automatically
 290      * added to the modref list of the process.
 291      */
 292
 293     for (i = 0, pe_imp = imports; pe_imp->Name ; pe_imp++) {
 294         WINE_MODREF             *wmImp;
 295         IMAGE_IMPORT_BY_NAME    *pe_name;
 296         PIMAGE_THUNK_DATA       import_list,thunk_list;
 297         char                    *name = (char *) RVA(pe_imp->Name);
 298
 299         if (characteristics_detection && !pe_imp->u.Characteristics)
 300                 break;
 301
 302         wmImp = MODULE_LoadLibraryExA( name, 0, 0 );
 303         if (!wmImp) {
 304             ERR_(module)("Module (file) %s (which is needed by %s) not found\n", name, wm->filename);
 305             return 1;
 306         }
 307         wm->deps[i++] = wmImp;
 308
 309         /* FIXME: forwarder entries ... */
 310
 311         if (pe_imp->u.OriginalFirstThunk != 0) { /* original MS style */
 312             TRACE("Microsoft style imports used\n");
 313             import_list =(PIMAGE_THUNK_DATA) RVA(pe_imp->u.OriginalFirstThunk);
 314             thunk_list = (PIMAGE_THUNK_DATA) RVA(pe_imp->FirstThunk);
 315
 316             while (import_list->u1.Ordinal) {
 317                 if (IMAGE_SNAP_BY_ORDINAL(import_list->u1.Ordinal)) {
 318                     int ordinal = IMAGE_ORDINAL(import_list->u1.Ordinal);
 319
 320                     TRACE("--- Ordinal %s,%d\n", name, ordinal);
 321                     thunk_list->u1.Function=(PDWORD)MODULE_GetProcAddress(
 322                         wmImp->module, (LPCSTR)ordinal, -1, TRUE
 323                     );
 324                     if (!thunk_list->u1.Function) {
 325                         ERR("No implementation for %s.%d imported from %s, setting to 0xdeadbeef\n",
 326                                 name, ordinal, wm->filename );
 327                         thunk_list->u1.Function = (PDWORD)0xdeadbeef;
 328                     }
 329                 } else {                /* import by name */
 330                     pe_name = (PIMAGE_IMPORT_BY_NAME)RVA(import_list->u1.AddressOfData);
 331                     TRACE("--- %s %s.%d\n", pe_name->Name, name, pe_name->Hint);
 332                     thunk_list->u1.Function=(PDWORD)MODULE_GetProcAddress(
 333                         wmImp->module, pe_name->Name, pe_name->Hint, TRUE
 334                     );
 335                     if (!thunk_list->u1.Function) {
 336                         ERR("No implementation for %s.%d(%s) imported from %s, setting to 0xdeadbeef\n",
 337                                 name,pe_name->Hint,pe_name->Name,wm->filename);
 338                         thunk_list->u1.Function = (PDWORD)0xdeadbeef;
 339                     }
 340                 }
 341                 import_list++;
 342                 thunk_list++;
 343             }
 344         } else {        /* Borland style */
 345             TRACE("Borland style imports used\n");
 346             thunk_list = (PIMAGE_THUNK_DATA) RVA(pe_imp->FirstThunk);
 347             while (thunk_list->u1.Ordinal) {
 348                 if (IMAGE_SNAP_BY_ORDINAL(thunk_list->u1.Ordinal)) {
 349                     /* not sure about this branch, but it seems to work */
 350                     int ordinal = IMAGE_ORDINAL(thunk_list->u1.Ordinal);
 351
 352                     TRACE("--- Ordinal %s.%d\n",name,ordinal);
 353                     thunk_list->u1.Function=(PDWORD)MODULE_GetProcAddress(
 354                         wmImp->module, (LPCSTR) ordinal, -1, TRUE
 355                     );
 356                     if (!thunk_list->u1.Function) {
 357                         ERR("No implementation for %s.%d imported from %s, setting to 0xdeadbeef\n",
 358                                 name,ordinal, wm->filename);
 359                         thunk_list->u1.Function = (PDWORD)0xdeadbeef;
 360                     }
 361                 } else {
 362                     pe_name=(PIMAGE_IMPORT_BY_NAME) RVA(thunk_list->u1.AddressOfData);
 363                     TRACE("--- %s %s.%d\n",
 364                                   pe_name->Name,name,pe_name->Hint);
 365                     thunk_list->u1.Function=(PDWORD)MODULE_GetProcAddress(
 366                         wmImp->module, pe_name->Name, pe_name->Hint, TRUE
 367                     );
 368                     if (!thunk_list->u1.Function) {
 369                         ERR("No implementation for %s.%d(%s) imported from %s, setting to 0xdeadbeef\n",
 370                                 name, pe_name->Hint, pe_name->Name, wm->filename);
 371                         thunk_list->u1.Function = (PDWORD)0xdeadbeef;
 372                     }
 373                 }
 374                 thunk_list++;
 375             }
 376         }
 377     }
 378     return 0;
 379 }
 380
 381 /**********************************************************************
 382  *                      PE_LoadImage
 383  * Load one PE format DLL/EXE into memory
 384  *
 385  * Unluckily we can't just mmap the sections where we want them, for
 386  * (at least) Linux does only support offsets which are page-aligned.
 387  *
 388  * BUT we have to map the whole image anyway, for Win32 programs sometimes
 389  * want to access them. (HMODULE points to the start of it)
 390  */
 391 HMODULE PE_LoadImage( HANDLE hFile, LPCSTR filename, DWORD flags )
 392 {
 393     IMAGE_NT_HEADERS *nt;
 394     HMODULE hModule;
 395     HANDLE mapping;
 396     void *base;
 397
 398     TRACE_(module)( "loading %s\n", filename );
 399
 400     mapping = CreateFileMappingA( hFile, NULL, SEC_IMAGE, 0, 0, NULL );
 401     if (!mapping) return 0;
 402     base = MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
 403     CloseHandle( mapping );
 404     if (!base) return 0;
 405
 406     /* virus check */
 407
 408     hModule = (HMODULE)base;
 409     nt = PE_HEADER( hModule );
 410
 411     if (nt->OptionalHeader.AddressOfEntryPoint)
 412     {
 413         int i;
 414         IMAGE_SECTION_HEADER *sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader +
 415                                                             nt->FileHeader.SizeOfOptionalHeader);
 416         for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
 417         {
 418             if (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress)
 419                 continue;
 420             if (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress+sec->SizeOfRawData)
 421                 break;
 422         }
 423         if (i == nt->FileHeader.NumberOfSections)
 424             MESSAGE("VIRUS WARNING: PE module has an invalid entrypoint (0x%08lx) "
 425                     "outside all sections (possibly infected by Tchernobyl/SpaceFiller virus)!\n",
 426                     nt->OptionalHeader.AddressOfEntryPoint );
 427     }
 428
 429     return hModule;
 430 }
 431
 432 /**********************************************************************
 433  *                 PE_CreateModule
 434  *
 435  * Create WINE_MODREF structure for loaded HMODULE, link it into
 436  * process modref_list, and fixup all imports.
 437  *
 438  * Note: hModule must point to a correctly allocated PE image,
 439  *       with base relocations applied; the 16-bit dummy module
 440  *       associated to hModule must already exist.
 441  *
 442  * Note: This routine must always be called in the context of the
 443  *       process that is to own the module to be created.
 444  *
 445  * Note: Assumes that the process critical section is held
 446  */
 447 WINE_MODREF *PE_CreateModule( HMODULE hModule, LPCSTR filename, DWORD flags,
 448                               HANDLE hFile, BOOL builtin )
 449 {
 450     DWORD load_addr = (DWORD)hModule;  /* for RVA */
 451     IMAGE_NT_HEADERS *nt = PE_HEADER(hModule);
 452     IMAGE_DATA_DIRECTORY *dir;
 453     IMAGE_EXPORT_DIRECTORY *pe_export = NULL;
 454     WINE_MODREF *wm;
 455     HMODULE16 hModule16;
 456
 457     /* Retrieve DataDirectory entries */
 458
 459     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXPORT;
 460     if (dir->Size)
 461         pe_export = (PIMAGE_EXPORT_DIRECTORY)RVA(dir->VirtualAddress);
 462
 463     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXCEPTION;
 464     if (dir->Size) FIXME("Exception directory ignored\n" );
 465
 466     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_SECURITY;
 467     if (dir->Size) FIXME("Security directory ignored\n" );
 468
 469     /* IMAGE_DIRECTORY_ENTRY_BASERELOC handled in PE_LoadImage */
 470     /* IMAGE_DIRECTORY_ENTRY_DEBUG handled by debugger */
 471
 472     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_GLOBALPTR;
 473     if (dir->Size) FIXME("Global Pointer (MIPS) ignored\n" );
 474
 475     /* IMAGE_DIRECTORY_ENTRY_TLS handled in PE_TlsInit */
 476
 477     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG;
 478     if (dir->Size) FIXME("Load Configuration directory ignored\n" );
 479
 480     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT;
 481     if (dir->Size) TRACE("Bound Import directory ignored\n" );
 482
 483     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_IAT;
 484     if (dir->Size) TRACE("Import Address Table directory ignored\n" );
 485
 486     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT;
 487     if (dir->Size)
 488     {
 489                 TRACE("Delayed import, stub calls LoadLibrary\n" );
 490                 /*
 491                  * Nothing to do here.
 492                  */
 493
 494 #ifdef ImgDelayDescr
 495                 /*
 496                  * This code is useful to observe what the heck is going on.
 497                  */
 498                 {
 499                 ImgDelayDescr *pe_delay = NULL;
 500         pe_delay = (PImgDelayDescr)RVA(dir->VirtualAddress);
 501         TRACE_(delayhlp)("pe_delay->grAttrs = %08x\n", pe_delay->grAttrs);
 502         TRACE_(delayhlp)("pe_delay->szName = %s\n", pe_delay->szName);
 503         TRACE_(delayhlp)("pe_delay->phmod = %08x\n", pe_delay->phmod);
 504         TRACE_(delayhlp)("pe_delay->pIAT = %08x\n", pe_delay->pIAT);
 505         TRACE_(delayhlp)("pe_delay->pINT = %08x\n", pe_delay->pINT);
 506         TRACE_(delayhlp)("pe_delay->pBoundIAT = %08x\n", pe_delay->pBoundIAT);
 507         TRACE_(delayhlp)("pe_delay->pUnloadIAT = %08x\n", pe_delay->pUnloadIAT);
 508         TRACE_(delayhlp)("pe_delay->dwTimeStamp = %08x\n", pe_delay->dwTimeStamp);
 509         }
 510 #endif /* ImgDelayDescr */
 511         }
 512
 513     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR;
 514     if (dir->Size) FIXME("Unknown directory 14 ignored\n" );
 515
 516     dir = nt->OptionalHeader.DataDirectory+15;
 517     if (dir->Size) FIXME("Unknown directory 15 ignored\n" );
 518
 519     /* Create 16-bit dummy module */
 520
 521     if ((hModule16 = MODULE_CreateDummyModule( filename, hModule )) < 32)
 522     {
 523         SetLastError( (DWORD)hModule16 );       /* This should give the correct error */
 524         return NULL;
 525     }
 526
 527     /* Allocate and fill WINE_MODREF */
 528
 529     if (!(wm = MODULE_AllocModRef( hModule, filename )))
 530     {
 531         FreeLibrary16( hModule16 );
 532         return NULL;
 533     }
 534     wm->hDummyMod = hModule16;
 535
 536     if ( builtin )
 537     {
 538         NE_MODULE *pModule = (NE_MODULE *)GlobalLock16( hModule16 );
 539         pModule->flags |= NE_FFLAGS_BUILTIN;
 540         wm->flags |= WINE_MODREF_INTERNAL;
 541     }
 542     else if ( flags & DONT_RESOLVE_DLL_REFERENCES )
 543         wm->flags |= WINE_MODREF_DONT_RESOLVE_REFS;
 544
 545     wm->find_export = PE_FindExportedFunction;
 546
 547     /* Dump Exports */
 548
 549     if (pe_export && TRACE_ON(win32))
 550         dump_exports( hModule );
 551
 552     /* Fixup Imports */
 553
 554     if (!(wm->flags & WINE_MODREF_DONT_RESOLVE_REFS) &&
 555         PE_fixup_imports( wm ))
 556     {
 557         /* remove entry from modref chain */
 558
 559         if ( !wm->prev )
 560             MODULE_modref_list = wm->next;
 561         else
 562             wm->prev->next = wm->next;
 563
 564         if ( wm->next ) wm->next->prev = wm->prev;
 565         wm->next = wm->prev = NULL;
 566
 567         /* FIXME: there are several more dangling references
 568          * left. Including dlls loaded by this dll before the
 569          * failed one. Unrolling is rather difficult with the
 570          * current structure and we can leave them lying
 571          * around with no problems, so we don't care.
 572          * As these might reference our wm, we don't free it.
 573          */
 574          return NULL;
 575     }
 576
 577     if (!builtin && pe_export)
 578         SNOOP_RegisterDLL( hModule, wm->modname, pe_export->Base, pe_export->NumberOfFunctions );
 579
 580     /* Send DLL load event */
 581     /* we don't need to send a dll event for the main exe */
 582
 583     if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
 584     {
 585         if (hFile)
 586         {
 587             UINT drive_type = GetDriveTypeA( wm->short_filename );
 588             /* don't keep the file handle open on removable media */
 589             if (drive_type == DRIVE_REMOVABLE || drive_type == DRIVE_CDROM) hFile = 0;
 590         }
 591         SERVER_START_REQ( load_dll )
 592         {
 593             req->handle     = hFile;
 594             req->base       = (void *)hModule;
 595             req->size       = nt->OptionalHeader.SizeOfImage;
 596             req->dbg_offset = nt->FileHeader.PointerToSymbolTable;
 597             req->dbg_size   = nt->FileHeader.NumberOfSymbols;
 598             req->name       = &wm->filename;
 599             wine_server_add_data( req, wm->filename, strlen(wm->filename) );
 600             wine_server_call( req );
 601         }
 602         SERVER_END_REQ;
 603     }
 604
 605     return wm;
 606 }
 607
 608 /******************************************************************************
 609  * The PE Library Loader frontend.
 610  * FIXME: handle the flags.
 611  */
 612 WINE_MODREF *PE_LoadLibraryExA (LPCSTR name, DWORD flags)
 613 {
 614         HMODULE         hModule32;
 615         WINE_MODREF     *wm;
 616         HANDLE          hFile;
 617
 618         hFile = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ,
 619                              NULL, OPEN_EXISTING, 0, 0 );
 620         if ( hFile == INVALID_HANDLE_VALUE ) return NULL;
 621
 622         /* Load PE module */
 623         hModule32 = PE_LoadImage( hFile, name, flags );
 624         if (!hModule32)
 625         {
 626                 CloseHandle( hFile );
 627                 return NULL;
 628         }
 629
 630         /* Create 32-bit MODREF */
 631         if ( !(wm = PE_CreateModule( hModule32, name, flags, hFile, FALSE )) )
 632         {
 633                 ERR( "can't load %s\n", name );
 634                 CloseHandle( hFile );
 635                 SetLastError( ERROR_OUTOFMEMORY );
 636                 return NULL;
 637         }
 638
 639         CloseHandle( hFile );
 640         return wm;
 641 }
 642
 643
 644 /* Called if the library is loaded or freed.
 645  * NOTE: if a thread attaches a DLL, the current thread will only do
 646  * DLL_PROCESS_ATTACH. Only newly created threads do DLL_THREAD_ATTACH
 647  * (SDK)
 648  */
 649 typedef DWORD (CALLBACK *DLLENTRYPROC)(HMODULE,DWORD,LPVOID);
 650
 651 BOOL PE_InitDLL( HMODULE module, DWORD type, LPVOID lpReserved )
 652 {
 653     BOOL retv = TRUE;
 654     IMAGE_NT_HEADERS *nt = PE_HEADER(module);
 655
 656     /* Is this a library? And has it got an entrypoint? */
 657     if ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) &&
 658         (nt->OptionalHeader.AddressOfEntryPoint))
 659     {
 660         DLLENTRYPROC entry = (void*)((char*)module + nt->OptionalHeader.AddressOfEntryPoint);
 661         if (TRACE_ON(relay))
 662             DPRINTF("%08lx:Call PE DLL (proc=%p,module=%08x,type=%ld,res=%p)\n",
 663                     GetCurrentThreadId(), entry, module, type, lpReserved );
 664         retv = entry( module, type, lpReserved );
 665         if (TRACE_ON(relay))
 666             DPRINTF("%08lx:Ret  PE DLL (proc=%p,module=%08x,type=%ld,res=%p) retval=%x\n",
 667                     GetCurrentThreadId(), entry, module, type, lpReserved, retv );
 668     }
 669
 670     return retv;
 671 }
 672
 673 /************************************************************************
 674  *      PE_InitTls                      (internal)
 675  *
 676  * If included, initialises the thread local storages of modules.
 677  * Pointers in those structs are not RVAs but real pointers which have been
 678  * relocated by do_relocations() already.
 679  */
 680 static LPVOID
 681 _fixup_address(PIMAGE_OPTIONAL_HEADER opt,int delta,LPVOID addr) {
 682         if (    ((DWORD)addr>opt->ImageBase) &&
 683                 ((DWORD)addr<opt->ImageBase+opt->SizeOfImage)
 684         )
 685                 /* the address has not been relocated! */
 686                 return (LPVOID)(((DWORD)addr)+delta);
 687         else
 688                 /* the address has been relocated already */
 689                 return addr;
 690 }
 691 void PE_InitTls( void )
 692 {
 693         WINE_MODREF             *wm;
 694         IMAGE_NT_HEADERS        *peh;
 695         DWORD                   size,datasize;
 696         LPVOID                  mem;
 697         PIMAGE_TLS_DIRECTORY    pdir;
 698         int delta;
 699
 700         for (wm = MODULE_modref_list;wm;wm=wm->next) {
 701                 peh = PE_HEADER(wm->module);
 702                 delta = wm->module - peh->OptionalHeader.ImageBase;
 703                 if (!peh->OptionalHeader.DataDirectory[IMAGE_FILE_THREAD_LOCAL_STORAGE].VirtualAddress)
 704                         continue;
 705                 pdir = (LPVOID)(wm->module + peh->OptionalHeader.
 706                         DataDirectory[IMAGE_FILE_THREAD_LOCAL_STORAGE].VirtualAddress);
 707
 708
 709                 if ( wm->tlsindex == -1 ) {
 710                         LPDWORD xaddr;
 711                         wm->tlsindex = TlsAlloc();
 712                         xaddr = _fixup_address(&(peh->OptionalHeader),delta,
 713                                         pdir->AddressOfIndex
 714                         );
 715                         *xaddr=wm->tlsindex;
 716                 }
 717                 datasize= pdir->EndAddressOfRawData-pdir->StartAddressOfRawData;
 718                 size    = datasize + pdir->SizeOfZeroFill;
 719                 mem=VirtualAlloc(0,size,MEM_RESERVE|MEM_COMMIT,PAGE_READWRITE);
 720                 memcpy(mem,_fixup_address(&(peh->OptionalHeader),delta,(LPVOID)pdir->StartAddressOfRawData),datasize);
 721                 if (pdir->AddressOfCallBacks) {
 722                      PIMAGE_TLS_CALLBACK *cbs;
 723
 724                      cbs = _fixup_address(&(peh->OptionalHeader),delta,pdir->AddressOfCallBacks);
 725                      if (*cbs)
 726                        FIXME("TLS Callbacks aren't going to be called\n");
 727                 }
 728
 729                 TlsSetValue( wm->tlsindex, mem );
 730         }
 731 }