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 #include "ntdll_misc.h"
  50
  51 WINE_DEFAULT_DEBUG_CHANNEL(win32);
  52 WINE_DECLARE_DEBUG_CHANNEL(module);
  53 WINE_DECLARE_DEBUG_CHANNEL(relay);
  54
  55
  56 /* convert PE image VirtualAddress to Real Address */
  57 inline static void *get_rva( HMODULE module, DWORD va )
  58 {
  59     return (void *)((char *)module + va);
  60 }
  61
  62 #define AdjustPtr(ptr,delta) ((char *)(ptr) + (delta))
  63
  64 void dump_exports( HMODULE hModule )
  65 {
  66   char          *Module;
  67   int           i, j;
  68   WORD          *ordinal;
  69   DWORD         *function,*functions;
  70   DWORD *name;
  71   IMAGE_EXPORT_DIRECTORY *pe_exports;
  72   DWORD rva_start, size;
  73
  74   pe_exports = RtlImageDirectoryEntryToData( hModule, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &size );
  75   rva_start = (char *)pe_exports - (char *)hModule;
  76
  77   Module = get_rva(hModule, pe_exports->Name);
  78   DPRINTF("*******EXPORT DATA*******\n");
  79   DPRINTF("Module name is %s, %ld functions, %ld names\n",
  80           Module, pe_exports->NumberOfFunctions, pe_exports->NumberOfNames);
  81
  82   ordinal = get_rva(hModule, pe_exports->AddressOfNameOrdinals);
  83   functions = function = get_rva(hModule, pe_exports->AddressOfFunctions);
  84   name = get_rva(hModule, pe_exports->AddressOfNames);
  85
  86   DPRINTF(" Ord    RVA     Addr   Name\n" );
  87   for (i=0;i<pe_exports->NumberOfFunctions;i++, function++)
  88   {
  89       if (!*function) continue;  /* No such function */
  90       DPRINTF( "%4ld %08lx %p", i + pe_exports->Base, *function, get_rva(hModule, *function) );
  91       /* Check if we have a name for it */
  92       for (j = 0; j < pe_exports->NumberOfNames; j++)
  93           if (ordinal[j] == i)
  94           {
  95               DPRINTF( "  %s", (char*)get_rva(hModule, name[j]) );
  96               break;
  97           }
  98       if ((*function >= rva_start) && (*function <= rva_start + size))
  99           DPRINTF(" (forwarded -> %s)", (char *)get_rva(hModule, *function));
 100       DPRINTF("\n");
 101   }
 102 }
 103
 104 /* Look up the specified function or ordinal in the export list:
 105  * If it is a string:
 106  *      - look up the name in the name list.
 107  *      - look up the ordinal with that index.
 108  *      - use the ordinal as offset into the functionlist
 109  * If it is an ordinal:
 110  *      - use ordinal-pe_export->Base as offset into the function list
 111  */
 112 FARPROC PE_FindExportedFunction(
 113         WINE_MODREF *wm,        /* [in] WINE modreference */
 114         LPCSTR funcName,        /* [in] function name */
 115         int hint,
 116         BOOL snoop )
 117 {
 118         WORD                            * ordinals;
 119         DWORD                           * function;
 120         int                             i, ordinal;
 121         DWORD                           rva_start, addr;
 122         char                            * forward;
 123         DWORD *name;
 124         char *ename = NULL;
 125         FARPROC proc;
 126         IMAGE_EXPORT_DIRECTORY *exports;
 127         DWORD exp_size;
 128
 129         if (!(exports = RtlImageDirectoryEntryToData( wm->ldr.BaseAddress, TRUE,
 130                                                       IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size )))
 131             return NULL;
 132
 133         if (HIWORD(funcName)) TRACE("(%s)\n",funcName);
 134         else TRACE("(%d)\n",LOWORD(funcName));
 135
 136         ordinals= get_rva(wm->ldr.BaseAddress, exports->AddressOfNameOrdinals);
 137         function= get_rva(wm->ldr.BaseAddress, exports->AddressOfFunctions);
 138         name    = get_rva(wm->ldr.BaseAddress, exports->AddressOfNames);
 139         forward = NULL;
 140         rva_start = (char *)exports - (char *)wm->ldr.BaseAddress;
 141
 142         if (HIWORD(funcName))
 143         {
 144             int min = 0, max = exports->NumberOfNames - 1;
 145
 146             /* first check the hint */
 147             if (hint >= 0 && hint <= max)
 148             {
 149                 ename = get_rva(wm->ldr.BaseAddress, name[hint]);
 150                 if (!strcmp( ename, funcName ))
 151                 {
 152                     ordinal = ordinals[hint];
 153                     goto found;
 154                 }
 155             }
 156
 157             /* then do a binary search */
 158             while (min <= max)
 159             {
 160                 int res, pos = (min + max) / 2;
 161                 ename = get_rva(wm->ldr.BaseAddress, name[pos]);
 162                 if (!(res = strcmp( ename, funcName )))
 163                 {
 164                     ordinal = ordinals[pos];
 165                     goto found;
 166                 }
 167                 if (res > 0) max = pos - 1;
 168                 else min = pos + 1;
 169             }
 170             return NULL;
 171         }
 172         else  /* find by ordinal */
 173         {
 174             ordinal = LOWORD(funcName) - exports->Base;
 175             if (snoop && name)  /* need to find a name for it */
 176             {
 177                 for (i = 0; i < exports->NumberOfNames; i++)
 178                     if (ordinals[i] == ordinal)
 179                     {
 180                         ename = get_rva(wm->ldr.BaseAddress, name[i]);
 181                         break;
 182                     }
 183             }
 184         }
 185
 186  found:
 187         if (ordinal >= exports->NumberOfFunctions)
 188         {
 189             TRACE("     ordinal %ld out of range!\n", ordinal + exports->Base );
 190             return NULL;
 191         }
 192         addr = function[ordinal];
 193         if (!addr) return NULL;
 194
 195         proc = get_rva(wm->ldr.BaseAddress, addr);
 196         if (((char *)proc < (char *)exports) || ((char *)proc >= (char *)exports + exp_size))
 197         {
 198             if (snoop)
 199             {
 200                 if (!ename) ename = "@";
 201                 proc = SNOOP_GetProcAddress(wm->ldr.BaseAddress,ename,ordinal,proc);
 202             }
 203             return proc;
 204         }
 205         else  /* forward entry point */
 206         {
 207                 WINE_MODREF *wm_fw;
 208                 char *forward = (char *)proc;
 209                 char module[256];
 210                 char *end = strchr(forward, '.');
 211
 212                 if (!end) return NULL;
 213                 if (end - forward >= sizeof(module)) return NULL;
 214                 memcpy( module, forward, end - forward );
 215                 module[end-forward] = 0;
 216                 if (!(wm_fw = MODULE_FindModule( module )))
 217                 {
 218                     ERR("module not found for forward '%s' used by '%s'\n", forward, wm->modname );
 219                     return NULL;
 220                 }
 221                 if (!(proc = MODULE_GetProcAddress( wm_fw->ldr.BaseAddress, end + 1, -1, snoop )))
 222                     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 );
 223                 return proc;
 224         }
 225 }
 226
 227 /****************************************************************
 228  *      PE_fixup_imports
 229  */
 230 DWORD PE_fixup_imports( WINE_MODREF *wm )
 231 {
 232     int i,characteristics_detection=1;
 233     IMAGE_IMPORT_DESCRIPTOR *imports, *pe_imp;
 234     DWORD size;
 235
 236     imports = RtlImageDirectoryEntryToData( wm->ldr.BaseAddress, TRUE, IMAGE_DIRECTORY_ENTRY_IMPORT, &size );
 237
 238     /* first, count the number of imported non-internal modules */
 239     pe_imp = imports;
 240     if (!pe_imp) return 0;
 241
 242     /* OK, now dump the import list */
 243     TRACE("Dumping imports list\n");
 244
 245     /* We assume that we have at least one import with !0 characteristics and
 246      * detect broken imports with all characteristics 0 (notably Borland) and
 247      * switch the detection off for them.
 248      */
 249     for (i = 0; pe_imp->Name ; pe_imp++) {
 250         if (!i && !pe_imp->u.Characteristics)
 251                 characteristics_detection = 0;
 252         if (characteristics_detection && !pe_imp->u.Characteristics)
 253                 break;
 254         i++;
 255     }
 256     if (!i) return 0;  /* no imports */
 257
 258     /* Allocate module dependency list */
 259     wm->nDeps = i;
 260     wm->deps  = RtlAllocateHeap( ntdll_get_process_heap(), 0, i*sizeof(WINE_MODREF *) );
 261
 262     /* load the imported modules. They are automatically
 263      * added to the modref list of the process.
 264      */
 265
 266     for (i = 0, pe_imp = imports; pe_imp->Name ; pe_imp++) {
 267         WINE_MODREF             *wmImp;
 268         IMAGE_IMPORT_BY_NAME    *pe_name;
 269         PIMAGE_THUNK_DATA       import_list,thunk_list;
 270         char                    *name = get_rva(wm->ldr.BaseAddress, pe_imp->Name);
 271         NTSTATUS                nts;
 272
 273         if (characteristics_detection && !pe_imp->u.Characteristics)
 274                 break;
 275
 276         nts = MODULE_LoadLibraryExA( name, 0, &wmImp );
 277         switch (nts)
 278         {
 279         case STATUS_SUCCESS:
 280             break;
 281         case STATUS_NO_SUCH_FILE:
 282             ERR_(module)("Module (file) %s (which is needed by %s) not found\n", name, wm->filename);
 283             return 1;
 284         default:
 285             ERR_(module)("Loading module (file) %s (which is needed by %s) failed (error %ld).\n",
 286                          name, wm->filename, GetLastError());
 287             return 1;
 288         }
 289         wm->deps[i++] = wmImp;
 290
 291         /* FIXME: forwarder entries ... */
 292
 293         if (pe_imp->u.OriginalFirstThunk != 0) { /* original MS style */
 294             TRACE("Microsoft style imports used\n");
 295             import_list = get_rva(wm->ldr.BaseAddress, (DWORD)pe_imp->u.OriginalFirstThunk);
 296             thunk_list = get_rva(wm->ldr.BaseAddress, (DWORD)pe_imp->FirstThunk);
 297
 298             while (import_list->u1.Ordinal) {
 299                 if (IMAGE_SNAP_BY_ORDINAL(import_list->u1.Ordinal)) {
 300                     int ordinal = IMAGE_ORDINAL(import_list->u1.Ordinal);
 301
 302                     TRACE("--- Ordinal %s,%d\n", name, ordinal);
 303                     thunk_list->u1.Function=(PDWORD)MODULE_GetProcAddress(
 304                         wmImp->ldr.BaseAddress, (LPCSTR)ordinal, -1, TRUE
 305                     );
 306                     if (!thunk_list->u1.Function) {
 307                         ERR("No implementation for %s.%d imported from %s, setting to 0xdeadbeef\n",
 308                                 name, ordinal, wm->filename );
 309                         thunk_list->u1.Function = (PDWORD)0xdeadbeef;
 310                     }
 311                 } else {                /* import by name */
 312                     pe_name = get_rva(wm->ldr.BaseAddress, (DWORD)import_list->u1.AddressOfData);
 313                     TRACE("--- %s %s.%d\n", pe_name->Name, name, pe_name->Hint);
 314                     thunk_list->u1.Function=(PDWORD)MODULE_GetProcAddress(
 315                         wmImp->ldr.BaseAddress, pe_name->Name, pe_name->Hint, TRUE
 316                     );
 317                     if (!thunk_list->u1.Function) {
 318                         ERR("No implementation for %s.%d(%s) imported from %s, setting to 0xdeadbeef\n",
 319                                 name,pe_name->Hint,pe_name->Name,wm->filename);
 320                         thunk_list->u1.Function = (PDWORD)0xdeadbeef;
 321                     }
 322                 }
 323                 import_list++;
 324                 thunk_list++;
 325             }
 326         } else {        /* Borland style */
 327             TRACE("Borland style imports used\n");
 328             thunk_list = get_rva(wm->ldr.BaseAddress, (DWORD)pe_imp->FirstThunk);
 329             while (thunk_list->u1.Ordinal) {
 330                 if (IMAGE_SNAP_BY_ORDINAL(thunk_list->u1.Ordinal)) {
 331                     /* not sure about this branch, but it seems to work */
 332                     int ordinal = IMAGE_ORDINAL(thunk_list->u1.Ordinal);
 333
 334                     TRACE("--- Ordinal %s.%d\n",name,ordinal);
 335                     thunk_list->u1.Function=(PDWORD)MODULE_GetProcAddress(
 336                         wmImp->ldr.BaseAddress, (LPCSTR) ordinal, -1, TRUE
 337                     );
 338                     if (!thunk_list->u1.Function) {
 339                         ERR("No implementation for %s.%d imported from %s, setting to 0xdeadbeef\n",
 340                                 name,ordinal, wm->filename);
 341                         thunk_list->u1.Function = (PDWORD)0xdeadbeef;
 342                     }
 343                 } else {
 344                     pe_name=get_rva(wm->ldr.BaseAddress, (DWORD)thunk_list->u1.AddressOfData);
 345                     TRACE("--- %s %s.%d\n",
 346                                   pe_name->Name,name,pe_name->Hint);
 347                     thunk_list->u1.Function=(PDWORD)MODULE_GetProcAddress(
 348                         wmImp->ldr.BaseAddress, pe_name->Name, pe_name->Hint, TRUE
 349                     );
 350                     if (!thunk_list->u1.Function) {
 351                         ERR("No implementation for %s.%d(%s) imported from %s, setting to 0xdeadbeef\n",
 352                                 name, pe_name->Hint, pe_name->Name, wm->filename);
 353                         thunk_list->u1.Function = (PDWORD)0xdeadbeef;
 354                     }
 355                 }
 356                 thunk_list++;
 357             }
 358         }
 359     }
 360     return 0;
 361 }
 362
 363 /**********************************************************************
 364  *                      PE_LoadImage
 365  * Load one PE format DLL/EXE into memory
 366  *
 367  * Unluckily we can't just mmap the sections where we want them, for
 368  * (at least) Linux does only support offsets which are page-aligned.
 369  *
 370  * BUT we have to map the whole image anyway, for Win32 programs sometimes
 371  * want to access them. (HMODULE points to the start of it)
 372  */
 373 HMODULE PE_LoadImage( HANDLE hFile, LPCSTR filename, DWORD flags )
 374 {
 375     IMAGE_NT_HEADERS *nt;
 376     HMODULE hModule;
 377     HANDLE mapping;
 378     void *base = NULL;
 379     OBJECT_ATTRIBUTES attr;
 380     LARGE_INTEGER lg_int;
 381     DWORD len = 0;
 382     NTSTATUS nts;
 383
 384     TRACE_(module)( "loading %s\n", filename );
 385
 386     attr.Length                   = sizeof(attr);
 387     attr.RootDirectory            = 0;
 388     attr.ObjectName               = NULL;
 389     attr.Attributes               = 0;
 390     attr.SecurityDescriptor       = NULL;
 391     attr.SecurityQualityOfService = NULL;
 392
 393     lg_int.QuadPart = 0;
 394
 395     if (NtCreateSection( &mapping,
 396                          STANDARD_RIGHTS_REQUIRED | SECTION_QUERY | SECTION_MAP_READ,
 397                          &attr, &lg_int, 0, SEC_IMAGE, hFile ) != STATUS_SUCCESS)
 398         return 0;
 399
 400     nts = NtMapViewOfSection( mapping, GetCurrentProcess(),
 401                               &base, 0, 0, &lg_int, &len, ViewShare, 0,
 402                               PAGE_READONLY );
 403
 404     NtClose( mapping );
 405     if (nts != STATUS_SUCCESS) return 0;
 406
 407     /* virus check */
 408
 409     hModule = (HMODULE)base;
 410     nt = RtlImageNtHeader( hModule );
 411
 412     if (nt->OptionalHeader.AddressOfEntryPoint)
 413     {
 414         if (!RtlImageRvaToSection( nt, hModule, nt->OptionalHeader.AddressOfEntryPoint ))
 415             MESSAGE("VIRUS WARNING: PE module has an invalid entrypoint (0x%08lx) "
 416                     "outside all sections (possibly infected by Tchernobyl/SpaceFiller virus)!\n",
 417                     nt->OptionalHeader.AddressOfEntryPoint );
 418     }
 419
 420     return hModule;
 421 }
 422
 423 /**********************************************************************
 424  *                 PE_CreateModule
 425  *
 426  * Create WINE_MODREF structure for loaded HMODULE, link it into
 427  * process modref_list, and fixup all imports.
 428  *
 429  * Note: hModule must point to a correctly allocated PE image,
 430  *       with base relocations applied; the 16-bit dummy module
 431  *       associated to hModule must already exist.
 432  *
 433  * Note: This routine must always be called in the context of the
 434  *       process that is to own the module to be created.
 435  *
 436  * Note: Assumes that the process critical section is held
 437  */
 438 WINE_MODREF *PE_CreateModule( HMODULE hModule, LPCSTR filename, DWORD flags,
 439                               HANDLE hFile, BOOL builtin )
 440 {
 441     IMAGE_NT_HEADERS *nt;
 442     IMAGE_DATA_DIRECTORY *dir;
 443     IMAGE_EXPORT_DIRECTORY *pe_export = NULL;
 444     WINE_MODREF *wm;
 445     HMODULE16 hModule16;
 446
 447     /* Retrieve DataDirectory entries */
 448
 449     nt = RtlImageNtHeader(hModule);
 450     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXPORT;
 451     if (dir->Size) pe_export = get_rva(hModule, dir->VirtualAddress);
 452
 453     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXCEPTION;
 454     if (dir->Size) FIXME("Exception directory ignored\n" );
 455
 456     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_SECURITY;
 457     if (dir->Size) FIXME("Security directory ignored\n" );
 458
 459     /* IMAGE_DIRECTORY_ENTRY_BASERELOC handled in PE_LoadImage */
 460     /* IMAGE_DIRECTORY_ENTRY_DEBUG handled by debugger */
 461
 462     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_GLOBALPTR;
 463     if (dir->Size) FIXME("Global Pointer (MIPS) ignored\n" );
 464
 465     /* IMAGE_DIRECTORY_ENTRY_TLS handled in PE_TlsInit */
 466
 467     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG;
 468     if (dir->Size) FIXME("Load Configuration directory ignored\n" );
 469
 470     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT;
 471     if (dir->Size) TRACE("Bound Import directory ignored\n" );
 472
 473     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_IAT;
 474     if (dir->Size) TRACE("Import Address Table directory ignored\n" );
 475
 476     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT;
 477     if (dir->Size)
 478     {
 479         TRACE("Delayed import, stub calls LoadLibrary\n" );
 480         /*
 481          * Nothing to do here.
 482          */
 483
 484 #ifdef ImgDelayDescr
 485         /*
 486          * This code is useful to observe what the heck is going on.
 487          */
 488         {
 489             ImgDelayDescr *pe_delay = NULL;
 490             pe_delay = get_rva(hModule, dir->VirtualAddress);
 491             TRACE("pe_delay->grAttrs = %08x\n", pe_delay->grAttrs);
 492             TRACE("pe_delay->szName = %s\n", pe_delay->szName);
 493             TRACE("pe_delay->phmod = %08x\n", pe_delay->phmod);
 494             TRACE("pe_delay->pIAT = %08x\n", pe_delay->pIAT);
 495             TRACE("pe_delay->pINT = %08x\n", pe_delay->pINT);
 496             TRACE("pe_delay->pBoundIAT = %08x\n", pe_delay->pBoundIAT);
 497             TRACE("pe_delay->pUnloadIAT = %08x\n", pe_delay->pUnloadIAT);
 498             TRACE("pe_delay->dwTimeStamp = %08x\n", pe_delay->dwTimeStamp);
 499         }
 500 #endif /* ImgDelayDescr */
 501     }
 502
 503     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR;
 504     if (dir->Size) FIXME("Unknown directory 14 ignored\n" );
 505
 506     dir = nt->OptionalHeader.DataDirectory+15;
 507     if (dir->Size) FIXME("Unknown directory 15 ignored\n" );
 508
 509     /* Create 16-bit dummy module */
 510
 511     if ((hModule16 = MODULE_CreateDummyModule( filename, hModule )) < 32)
 512     {
 513         SetLastError( (DWORD)hModule16 );       /* This should give the correct error */
 514         return NULL;
 515     }
 516
 517     /* Allocate and fill WINE_MODREF */
 518
 519     if (!(wm = MODULE_AllocModRef( hModule, filename )))
 520     {
 521         FreeLibrary16( hModule16 );
 522         return NULL;
 523     }
 524     wm->hDummyMod = hModule16;
 525
 526     if ( builtin )
 527     {
 528         NE_MODULE *pModule = (NE_MODULE *)GlobalLock16( hModule16 );
 529         pModule->flags |= NE_FFLAGS_BUILTIN;
 530         wm->ldr.Flags |= LDR_WINE_INTERNAL;
 531     }
 532     else if ( flags & DONT_RESOLVE_DLL_REFERENCES )
 533         wm->ldr.Flags |= LDR_DONT_RESOLVE_REFS;
 534
 535     /* Dump Exports */
 536
 537     if (pe_export && TRACE_ON(win32))
 538         dump_exports( hModule );
 539
 540     /* Fixup Imports */
 541
 542     if (!(wm->ldr.Flags & LDR_DONT_RESOLVE_REFS) &&
 543         PE_fixup_imports( wm ))
 544     {
 545         /* remove entry from modref chain */
 546
 547         if ( !wm->prev )
 548             MODULE_modref_list = wm->next;
 549         else
 550             wm->prev->next = wm->next;
 551
 552         if ( wm->next ) wm->next->prev = wm->prev;
 553         wm->next = wm->prev = NULL;
 554
 555         /* FIXME: there are several more dangling references
 556          * left. Including dlls loaded by this dll before the
 557          * failed one. Unrolling is rather difficult with the
 558          * current structure and we can leave them lying
 559          * around with no problems, so we don't care.
 560          * As these might reference our wm, we don't free it.
 561          */
 562          return NULL;
 563     }
 564
 565     if (!builtin && pe_export)
 566         SNOOP_RegisterDLL( hModule, wm->modname, pe_export->Base, pe_export->NumberOfFunctions );
 567
 568     /* Send DLL load event */
 569     /* we don't need to send a dll event for the main exe */
 570
 571     if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
 572     {
 573         if (hFile)
 574         {
 575             UINT drive_type = GetDriveTypeA( wm->short_filename );
 576             /* don't keep the file handle open on removable media */
 577             if (drive_type == DRIVE_REMOVABLE || drive_type == DRIVE_CDROM) hFile = 0;
 578         }
 579         SERVER_START_REQ( load_dll )
 580         {
 581             req->handle     = hFile;
 582             req->base       = (void *)hModule;
 583             req->size       = nt->OptionalHeader.SizeOfImage;
 584             req->dbg_offset = nt->FileHeader.PointerToSymbolTable;
 585             req->dbg_size   = nt->FileHeader.NumberOfSymbols;
 586             req->name       = &wm->filename;
 587             wine_server_add_data( req, wm->filename, strlen(wm->filename) );
 588             wine_server_call( req );
 589         }
 590         SERVER_END_REQ;
 591     }
 592
 593     return wm;
 594 }
 595
 596 /******************************************************************************
 597  * The PE Library Loader frontend.
 598  * FIXME: handle the flags.
 599  */
 600 NTSTATUS PE_LoadLibraryExA (LPCSTR name, DWORD flags, WINE_MODREF** pwm)
 601 {
 602         HMODULE         hModule32;
 603         HANDLE          hFile;
 604
 605         hFile = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ,
 606                              NULL, OPEN_EXISTING, 0, 0 );
 607         if ( hFile == INVALID_HANDLE_VALUE )
 608         {
 609             /* keep it that way until we transform CreateFile into NtCreateFile */
 610             return (GetLastError() == ERROR_FILE_NOT_FOUND) ?
 611                 STATUS_NO_SUCH_FILE : STATUS_INTERNAL_ERROR;
 612         }
 613
 614         /* Load PE module */
 615         hModule32 = PE_LoadImage( hFile, name, flags );
 616         if (!hModule32)
 617         {
 618                 CloseHandle( hFile );
 619                 return STATUS_INTERNAL_ERROR;
 620         }
 621
 622         /* Create 32-bit MODREF */
 623         if ( !(*pwm = PE_CreateModule( hModule32, name, flags, hFile, FALSE )) )
 624         {
 625                 ERR( "can't load %s\n", name );
 626                 CloseHandle( hFile );
 627                 return STATUS_NO_MEMORY; /* FIXME */
 628         }
 629
 630         CloseHandle( hFile );
 631         return STATUS_SUCCESS;
 632 }
 633
 634
 635 /* Called if the library is loaded or freed.
 636  * NOTE: if a thread attaches a DLL, the current thread will only do
 637  * DLL_PROCESS_ATTACH. Only newly created threads do DLL_THREAD_ATTACH
 638  * (SDK)
 639  */
 640 typedef DWORD (CALLBACK *DLLENTRYPROC)(HMODULE,DWORD,LPVOID);
 641
 642 BOOL PE_InitDLL( HMODULE module, DWORD type, LPVOID lpReserved )
 643 {
 644     BOOL retv = TRUE;
 645     IMAGE_NT_HEADERS *nt = RtlImageNtHeader(module);
 646
 647     /* Is this a library? And has it got an entrypoint? */
 648     if (nt && (nt->FileHeader.Characteristics & IMAGE_FILE_DLL) &&
 649         (nt->OptionalHeader.AddressOfEntryPoint))
 650     {
 651         DLLENTRYPROC entry = (void*)((char*)module + nt->OptionalHeader.AddressOfEntryPoint);
 652         if (TRACE_ON(relay))
 653             DPRINTF("%04lx:Call PE DLL (proc=%p,module=%p,type=%ld,res=%p)\n",
 654                     GetCurrentThreadId(), entry, module, type, lpReserved );
 655         retv = entry( module, type, lpReserved );
 656         if (TRACE_ON(relay))
 657             DPRINTF("%04lx:Ret  PE DLL (proc=%p,module=%p,type=%ld,res=%p) retval=%x\n",
 658                     GetCurrentThreadId(), entry, module, type, lpReserved, retv );
 659     }
 660
 661     return retv;
 662 }
 663
 664 /************************************************************************
 665  *      PE_InitTls                      (internal)
 666  *
 667  * If included, initialises the thread local storages of modules.
 668  * Pointers in those structs are not RVAs but real pointers which have been
 669  * relocated by do_relocations() already.
 670  */
 671 static LPVOID
 672 _fixup_address(PIMAGE_OPTIONAL_HEADER opt,int delta,LPVOID addr) {
 673         if (    ((DWORD)addr>opt->ImageBase) &&
 674                 ((DWORD)addr<opt->ImageBase+opt->SizeOfImage)
 675         )
 676                 /* the address has not been relocated! */
 677                 return (LPVOID)(((DWORD)addr)+delta);
 678         else
 679                 /* the address has been relocated already */
 680                 return addr;
 681 }
 682
 683 void PE_InitTls( void )
 684 {
 685         WINE_MODREF             *wm;
 686         IMAGE_NT_HEADERS        *peh;
 687         DWORD                   size,datasize,dirsize;
 688         LPVOID                  mem;
 689         PIMAGE_TLS_DIRECTORY    pdir;
 690         int delta;
 691
 692         for (wm = MODULE_modref_list;wm;wm=wm->next) {
 693                 peh = RtlImageNtHeader(wm->ldr.BaseAddress);
 694                 pdir = RtlImageDirectoryEntryToData( wm->ldr.BaseAddress, TRUE,
 695                                                      IMAGE_DIRECTORY_ENTRY_TLS, &dirsize );
 696                 if (!pdir) continue;
 697                 delta = (char *)wm->ldr.BaseAddress - (char *)peh->OptionalHeader.ImageBase;
 698
 699                 if ( wm->ldr.TlsIndex == -1 ) {
 700                         LPDWORD xaddr;
 701                         wm->ldr.TlsIndex = TlsAlloc();
 702                         xaddr = _fixup_address(&(peh->OptionalHeader),delta,
 703                                         pdir->AddressOfIndex
 704                         );
 705                         *xaddr=wm->ldr.TlsIndex;
 706                 }
 707                 datasize= pdir->EndAddressOfRawData-pdir->StartAddressOfRawData;
 708                 size    = datasize + pdir->SizeOfZeroFill;
 709                 NtAllocateVirtualMemory( GetCurrentProcess(), &mem, NULL, &size,
 710                                          MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE );
 711                 memcpy(mem,_fixup_address(&(peh->OptionalHeader),delta,(LPVOID)pdir->StartAddressOfRawData),datasize);
 712                 if (pdir->AddressOfCallBacks) {
 713                      PIMAGE_TLS_CALLBACK *cbs;
 714
 715                      cbs = _fixup_address(&(peh->OptionalHeader),delta,pdir->AddressOfCallBacks);
 716                      if (*cbs)
 717                        FIXME("TLS Callbacks aren't going to be called\n");
 718                 }
 719
 720                 TlsSetValue( wm->ldr.TlsIndex, mem );
 721         }
 722 }