git.oblomov.eu Git - wine/blob - 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  *
   8  *      ftp.microsoft.com:/pub/developer/MSDN/CD8/PEFILE.ZIP
   9  * make that:
  10  *      ftp.microsoft.com:/developr/MSDN/OctCD/PEFILE.ZIP
  11  */
  12 /* Notes:
  13  * Before you start changing something in this file be aware of the following:
  14  *
  15  * - There are several functions called recursively. In a very subtle and
  16  *   obscure way. DLLs can reference each other recursively etc.
  17  * - If you want to enhance, speed up or clean up something in here, think
  18  *   twice WHY it is implemented in that strange way. There is usually a reason.
  19  *   Though sometimes it might just be lazyness ;)
  20  * - In PE_MapImage, right before fixup_imports() all external and internal
  21  *   state MUST be correct since this function can be called with the SAME image
  22  *   AGAIN. (Thats recursion for you.) That means MODREF.module and
  23  *   NE_MODULE.module32.
  24  * - No, you (usually) cannot use Linux mmap() to mmap() the images directly.
  25  *
  26  *   The problem is, that there is not direct 1:1 mapping from a diskimage and
  27  *   a memoryimage. The headers at the start are mapped linear, but the sections
  28  *   are not. For x86 the sections are 512 byte aligned in file and 4096 byte
  29  *   aligned in memory. Linux likes them 4096 byte aligned in memory (due to
  30  *   x86 pagesize, this cannot be fixed without a rather large kernel rewrite)
  31  *   and 'blocksize' file-aligned (offsets). Since we have 512/1024/2048 (CDROM)
  32  *   and other byte blocksizes, we can't do this. However, this could be less
  33  *   difficult to support... (See mm/filemap.c).
  34  */
  35
  36 #include <errno.h>
  37 #include <assert.h>
  38 #include <stdlib.h>
  39 #include <string.h>
  40 #include <unistd.h>
  41 #include <sys/types.h>
  42 #include <sys/stat.h>
  43 #include <sys/mman.h>
  44 #include "windef.h"
  45 #include "winbase.h"
  46 #include "winerror.h"
  47 #include "callback.h"
  48 #include "file.h"
  49 #include "heap.h"
  50 #include "neexe.h"
  51 #include "peexe.h"
  52 #include "process.h"
  53 #include "thread.h"
  54 #include "pe_image.h"
  55 #include "module.h"
  56 #include "global.h"
  57 #include "task.h"
  58 #include "snoop.h"
  59 #include "debug.h"
  60
  61
  62 /* convert PE image VirtualAddress to Real Address */
  63 #define RVA(x) ((unsigned int)load_addr+(unsigned int)(x))
  64
  65 #define AdjustPtr(ptr,delta) ((char *)(ptr) + (delta))
  66
  67 void dump_exports( HMODULE hModule )
  68 {
  69   char          *Module;
  70   int           i, j;
  71   u_short       *ordinal;
  72   u_long        *function,*functions;
  73   u_char        **name;
  74   unsigned int load_addr = hModule;
  75
  76   DWORD rva_start = PE_HEADER(hModule)->OptionalHeader
  77                    .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
  78   DWORD rva_end = rva_start + PE_HEADER(hModule)->OptionalHeader
  79                    .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
  80   IMAGE_EXPORT_DIRECTORY *pe_exports = (IMAGE_EXPORT_DIRECTORY*)RVA(rva_start);
  81
  82   Module = (char*)RVA(pe_exports->Name);
  83   TRACE(win32,"*******EXPORT DATA*******\n");
  84   TRACE(win32,"Module name is %s, %ld functions, %ld names\n",
  85                Module, pe_exports->NumberOfFunctions, pe_exports->NumberOfNames);
  86
  87   ordinal=(u_short*) RVA(pe_exports->AddressOfNameOrdinals);
  88   functions=function=(u_long*) RVA(pe_exports->AddressOfFunctions);
  89   name=(u_char**) RVA(pe_exports->AddressOfNames);
  90
  91   TRACE(win32," Ord    RVA     Addr   Name\n" );
  92   for (i=0;i<pe_exports->NumberOfFunctions;i++, function++)
  93   {
  94       if (!*function) continue;  /* No such function */
  95       if (TRACE_ON(win32)){
  96         dbg_decl_str(win32, 1024);
  97
  98         dsprintf(win32,"%4ld %08lx %08x",
  99                  i + pe_exports->Base, *function, RVA(*function) );
 100         /* Check if we have a name for it */
 101         for (j = 0; j < pe_exports->NumberOfNames; j++)
 102           if (ordinal[j] == i)
 103             dsprintf(win32, "  %s", (char*)RVA(name[j]) );
 104         if ((*function >= rva_start) && (*function <= rva_end))
 105           dsprintf(win32, " (forwarded -> %s)", (char *)RVA(*function));
 106         TRACE(win32,"%s\n", dbg_str(win32));
 107       }
 108   }
 109 }
 110
 111 /* Look up the specified function or ordinal in the exportlist:
 112  * If it is a string:
 113  *      - look up the name in the Name list.
 114  *      - look up the ordinal with that index.
 115  *      - use the ordinal as offset into the functionlist
 116  * If it is a ordinal:
 117  *      - use ordinal-pe_export->Base as offset into the functionlist
 118  */
 119 FARPROC PE_FindExportedFunction(
 120         WINE_MODREF *wm,        /* [in] WINE modreference */
 121         LPCSTR funcName,        /* [in] function name */
 122         BOOL snoop )
 123 {
 124         u_short                         * ordinal;
 125         u_long                          * function;
 126         u_char                          ** name, *ename;
 127         int                             i;
 128         PE_MODREF                       *pem = &(wm->binfmt.pe);
 129         IMAGE_EXPORT_DIRECTORY          *exports = pem->pe_export;
 130         unsigned int                    load_addr = wm->module;
 131         u_long                          rva_start, rva_end, addr;
 132         char                            * forward;
 133
 134         if (HIWORD(funcName))
 135                 TRACE(win32,"(%s)\n",funcName);
 136         else
 137                 TRACE(win32,"(%d)\n",(int)funcName);
 138         if (!exports) {
 139                 /* Not a fatal problem, some apps do
 140                  * GetProcAddress(0,"RegisterPenApp") which triggers this
 141                  * case.
 142                  */
 143                 WARN(win32,"Module %08x(%s)/MODREF %p doesn't have a exports table.\n",wm->module,wm->modname,pem);
 144                 return NULL;
 145         }
 146         ordinal = (u_short*)  RVA(exports->AddressOfNameOrdinals);
 147         function= (u_long*)   RVA(exports->AddressOfFunctions);
 148         name    = (u_char **) RVA(exports->AddressOfNames);
 149         forward = NULL;
 150         rva_start = PE_HEADER(wm->module)->OptionalHeader
 151                 .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
 152         rva_end = rva_start + PE_HEADER(wm->module)->OptionalHeader
 153                 .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
 154
 155         if (HIWORD(funcName)) {
 156                 for(i=0; i<exports->NumberOfNames; i++) {
 157                         ename=(char*)RVA(*name);
 158                         if(!strcmp(ename,funcName))
 159                         {
 160                             addr = function[*ordinal];
 161                             if (!addr) return NULL;
 162                             if ((addr < rva_start) || (addr >= rva_end))
 163                                 return snoop? SNOOP_GetProcAddress(wm->module,ename,*ordinal,(FARPROC)RVA(addr))
 164                                             : (FARPROC)RVA(addr);
 165                             forward = (char *)RVA(addr);
 166                             break;
 167                         }
 168                         ordinal++;
 169                         name++;
 170                 }
 171         } else  {
 172                 int i;
 173                 if (LOWORD(funcName)-exports->Base > exports->NumberOfFunctions) {
 174                         TRACE(win32,"   ordinal %d out of range!\n",
 175                                       LOWORD(funcName));
 176                         return NULL;
 177                 }
 178                 addr = function[(int)funcName-exports->Base];
 179                 if (!addr) return NULL;
 180                 ename = "";
 181                 if (name) {
 182                     for (i=0;i<exports->NumberOfNames;i++) {
 183                             ename = (char*)RVA(*name);
 184                             if (*ordinal == LOWORD(funcName)-exports->Base)
 185                                 break;
 186                             ordinal++;
 187                             name++;
 188                     }
 189                     if (i==exports->NumberOfNames)
 190                         ename = "";
 191                 }
 192                 if ((addr < rva_start) || (addr >= rva_end))
 193                         return snoop? SNOOP_GetProcAddress(wm->module,ename,(DWORD)funcName-exports->Base,(FARPROC)RVA(addr))
 194                                     : (FARPROC)RVA(addr);
 195                 forward = (char *)RVA(addr);
 196         }
 197         if (forward)
 198         {
 199                 HMODULE hMod;
 200                 char module[256];
 201                 char *end = strchr(forward, '.');
 202
 203                 if (!end) return NULL;
 204                 assert(end-forward<256);
 205                 strncpy(module, forward, (end - forward));
 206                 module[end-forward] = 0;
 207                 hMod = MODULE_FindModule( module );
 208                 assert(hMod);
 209                 return MODULE_GetProcAddress( hMod, end + 1, snoop );
 210         }
 211         return NULL;
 212 }
 213
 214 DWORD fixup_imports( WINE_MODREF *wm )
 215 {
 216     IMAGE_IMPORT_DESCRIPTOR     *pe_imp;
 217     WINE_MODREF                 *xwm;
 218     PE_MODREF                   *pem;
 219     unsigned int load_addr      = wm->module;
 220     int                         i,characteristics_detection=1;
 221     char                        *modname;
 222
 223     assert(wm->type==MODULE32_PE);
 224     pem = &(wm->binfmt.pe);
 225     if (pem->pe_export)
 226         modname = (char*) RVA(pem->pe_export->Name);
 227     else
 228         modname = "<unknown>";
 229
 230     /* OK, now dump the import list */
 231     TRACE(win32, "Dumping imports list\n");
 232
 233     /* first, count the number of imported non-internal modules */
 234     pe_imp = pem->pe_import;
 235     if (!pe_imp)
 236         ERR(win32, "no import directory????\n");
 237
 238     /* We assume that we have at least one import with !0 characteristics and
 239      * detect broken imports with all characteristsics 0 (notably Borland) and
 240      * switch the detection off for them.
 241      */
 242     for (i = 0; pe_imp->Name ; pe_imp++) {
 243         if (!i && !pe_imp->u.Characteristics)
 244                 characteristics_detection = 0;
 245         if (characteristics_detection && !pe_imp->u.Characteristics)
 246                 break;
 247         i++;
 248     }
 249
 250     /* Allocate module dependency list */
 251     wm->nDeps = i;
 252     wm->deps  = HeapAlloc( GetProcessHeap(), 0, i*sizeof(WINE_MODREF *) );
 253
 254     /* load the imported modules. They are automatically
 255      * added to the modref list of the process.
 256      */
 257
 258     for (i = 0, pe_imp = pem->pe_import; pe_imp->Name ; pe_imp++) {
 259         HMODULE         hImpModule;
 260         IMAGE_IMPORT_BY_NAME    *pe_name;
 261         PIMAGE_THUNK_DATA       import_list,thunk_list;
 262         char                    *name = (char *) RVA(pe_imp->Name);
 263
 264         if (characteristics_detection && !pe_imp->u.Characteristics)
 265                 break;
 266
 267         /* don't use MODULE_Load, Win32 creates new task differently */
 268         hImpModule = MODULE_LoadLibraryExA( name, 0, 0 );
 269         if (!hImpModule) {
 270             char *p,buffer[2000];
 271
 272             /* GetModuleFileName would use the wrong process, so don't use it */
 273             strcpy(buffer,wm->shortname);
 274             if (!(p = strrchr (buffer, '\\')))
 275                 p = buffer;
 276             strcpy (p + 1, name);
 277             hImpModule = MODULE_LoadLibraryExA( buffer, 0, 0 );
 278         }
 279         if (!hImpModule) {
 280             ERR (module, "Module %s not found\n", name);
 281             return 1;
 282         }
 283         xwm = MODULE32_LookupHMODULE( hImpModule );
 284         assert( xwm );
 285         wm->deps[i++] = xwm;
 286
 287         /* FIXME: forwarder entries ... */
 288
 289         if (pe_imp->u.OriginalFirstThunk != 0) { /* original MS style */
 290             TRACE(win32, "Microsoft style imports used\n");
 291             import_list =(PIMAGE_THUNK_DATA) RVA(pe_imp->u.OriginalFirstThunk);
 292             thunk_list = (PIMAGE_THUNK_DATA) RVA(pe_imp->FirstThunk);
 293
 294             while (import_list->u1.Ordinal) {
 295                 if (IMAGE_SNAP_BY_ORDINAL(import_list->u1.Ordinal)) {
 296                     int ordinal = IMAGE_ORDINAL(import_list->u1.Ordinal);
 297
 298                     TRACE(win32, "--- Ordinal %s,%d\n", name, ordinal);
 299                     thunk_list->u1.Function=MODULE_GetProcAddress(
 300                         hImpModule, (LPCSTR)ordinal, TRUE
 301                     );
 302                     if (!thunk_list->u1.Function) {
 303                         ERR(win32,"No implementation for %s.%d, setting to 0xdeadbeef\n",
 304                                 name, ordinal);
 305                         thunk_list->u1.Function = (FARPROC)0xdeadbeef;
 306                     }
 307                 } else {                /* import by name */
 308                     pe_name = (PIMAGE_IMPORT_BY_NAME)RVA(import_list->u1.AddressOfData);
 309                     TRACE(win32, "--- %s %s.%d\n", pe_name->Name, name, pe_name->Hint);
 310                     thunk_list->u1.Function=MODULE_GetProcAddress(
 311                         hImpModule, pe_name->Name, TRUE
 312                     );
 313                     if (!thunk_list->u1.Function) {
 314                         ERR(win32,"No implementation for %s.%d(%s), setting to 0xdeadbeef\n",
 315                                 name,pe_name->Hint,pe_name->Name);
 316                         thunk_list->u1.Function = (FARPROC)0xdeadbeef;
 317                     }
 318                 }
 319                 import_list++;
 320                 thunk_list++;
 321             }
 322         } else {        /* Borland style */
 323             TRACE(win32, "Borland style imports used\n");
 324             thunk_list = (PIMAGE_THUNK_DATA) RVA(pe_imp->FirstThunk);
 325             while (thunk_list->u1.Ordinal) {
 326                 if (IMAGE_SNAP_BY_ORDINAL(thunk_list->u1.Ordinal)) {
 327                     /* not sure about this branch, but it seems to work */
 328                     int ordinal = IMAGE_ORDINAL(thunk_list->u1.Ordinal);
 329
 330                     TRACE(win32,"--- Ordinal %s.%d\n",name,ordinal);
 331                     thunk_list->u1.Function=MODULE_GetProcAddress(
 332                         hImpModule, (LPCSTR) ordinal, TRUE
 333                     );
 334                     if (!thunk_list->u1.Function) {
 335                         ERR(win32, "No implementation for %s.%d, setting to 0xdeadbeef\n",
 336                                 name,ordinal);
 337                         thunk_list->u1.Function = (FARPROC)0xdeadbeef;
 338                     }
 339                 } else {
 340                     pe_name=(PIMAGE_IMPORT_BY_NAME) RVA(thunk_list->u1.AddressOfData);
 341                     TRACE(win32,"--- %s %s.%d\n",
 342                                   pe_name->Name,name,pe_name->Hint);
 343                     thunk_list->u1.Function=MODULE_GetProcAddress(
 344                         hImpModule, pe_name->Name, TRUE
 345                     );
 346                     if (!thunk_list->u1.Function) {
 347                         ERR(win32, "No implementation for %s.%d, setting to 0xdeadbeef\n",
 348                                 name, pe_name->Hint);
 349                         thunk_list->u1.Function = (FARPROC)0xdeadbeef;
 350                     }
 351                 }
 352                 thunk_list++;
 353             }
 354         }
 355     }
 356     return 0;
 357 }
 358
 359 static int calc_vma_size( HMODULE hModule )
 360 {
 361     int i,vma_size = 0;
 362     IMAGE_SECTION_HEADER *pe_seg = PE_SECTIONS(hModule);
 363
 364     TRACE(win32, "Dump of segment table\n");
 365     TRACE(win32, "   Name    VSz  Vaddr     SzRaw   Fileadr  *Reloc *Lineum #Reloc #Linum Char\n");
 366     for (i = 0; i< PE_HEADER(hModule)->FileHeader.NumberOfSections; i++)
 367     {
 368         TRACE(win32, "%8s: %4.4lx %8.8lx %8.8lx %8.8lx %8.8lx %8.8lx %4.4x %4.4x %8.8lx\n",
 369                       pe_seg->Name,
 370                       pe_seg->Misc.VirtualSize,
 371                       pe_seg->VirtualAddress,
 372                       pe_seg->SizeOfRawData,
 373                       pe_seg->PointerToRawData,
 374                       pe_seg->PointerToRelocations,
 375                       pe_seg->PointerToLinenumbers,
 376                       pe_seg->NumberOfRelocations,
 377                       pe_seg->NumberOfLinenumbers,
 378                       pe_seg->Characteristics);
 379         vma_size=MAX(vma_size, pe_seg->VirtualAddress+pe_seg->SizeOfRawData);
 380         vma_size=MAX(vma_size, pe_seg->VirtualAddress+pe_seg->Misc.VirtualSize);
 381         pe_seg++;
 382     }
 383     return vma_size;
 384 }
 385
 386 static void do_relocations( unsigned int load_addr, IMAGE_BASE_RELOCATION *r )
 387 {
 388     int delta = load_addr - PE_HEADER(load_addr)->OptionalHeader.ImageBase;
 389     int hdelta = (delta >> 16) & 0xFFFF;
 390     int ldelta = delta & 0xFFFF;
 391
 392         if(delta == 0)
 393                 /* Nothing to do */
 394                 return;
 395         while(r->VirtualAddress)
 396         {
 397                 char *page = (char*) RVA(r->VirtualAddress);
 398                 int count = (r->SizeOfBlock - 8)/2;
 399                 int i;
 400                 TRACE(fixup, "%x relocations for page %lx\n",
 401                         count, r->VirtualAddress);
 402                 /* patching in reverse order */
 403                 for(i=0;i<count;i++)
 404                 {
 405                         int offset = r->TypeOffset[i] & 0xFFF;
 406                         int type = r->TypeOffset[i] >> 12;
 407                         TRACE(fixup,"patching %x type %x\n", offset, type);
 408                         switch(type)
 409                         {
 410                         case IMAGE_REL_BASED_ABSOLUTE: break;
 411                         case IMAGE_REL_BASED_HIGH:
 412                                 *(short*)(page+offset) += hdelta;
 413                                 break;
 414                         case IMAGE_REL_BASED_LOW:
 415                                 *(short*)(page+offset) += ldelta;
 416                                 break;
 417                         case IMAGE_REL_BASED_HIGHLOW:
 418 #if 1
 419                                 *(int*)(page+offset) += delta;
 420 #else
 421                                 { int h=*(unsigned short*)(page+offset);
 422                                   int l=r->TypeOffset[++i];
 423                                   *(unsigned int*)(page + offset) = (h<<16) + l + delta;
 424                                 }
 425 #endif
 426                                 break;
 427                         case IMAGE_REL_BASED_HIGHADJ:
 428                                 FIXME(win32, "Don't know what to do with IMAGE_REL_BASED_HIGHADJ\n");
 429                                 break;
 430                         case IMAGE_REL_BASED_MIPS_JMPADDR:
 431                                 FIXME(win32, "Is this a MIPS machine ???\n");
 432                                 break;
 433                         default:
 434                                 FIXME(win32, "Unknown fixup type\n");
 435                                 break;
 436                         }
 437                 }
 438                 r = (IMAGE_BASE_RELOCATION*)((char*)r + r->SizeOfBlock);
 439         }
 440 }
 441
 442
 443
 444
 445
 446 /**********************************************************************
 447  *                      PE_LoadImage
 448  * Load one PE format DLL/EXE into memory
 449  *
 450  * Unluckily we can't just mmap the sections where we want them, for
 451  * (at least) Linux does only support offsets which are page-aligned.
 452  *
 453  * BUT we have to map the whole image anyway, for Win32 programs sometimes
 454  * want to access them. (HMODULE32 point to the start of it)
 455  */
 456 HMODULE PE_LoadImage( HFILE hFile, OFSTRUCT *ofs, LPCSTR *modName )
 457 {
 458     HMODULE     hModule;
 459     HANDLE      mapping;
 460
 461     IMAGE_NT_HEADERS *nt;
 462     IMAGE_SECTION_HEADER *pe_sec;
 463     IMAGE_DATA_DIRECTORY *dir;
 464     BY_HANDLE_FILE_INFORMATION bhfi;
 465     int i, rawsize, lowest_va, lowest_fa, vma_size, file_size = 0;
 466     DWORD load_addr, aoep, reloc = 0;
 467
 468     /* Retrieve file size */
 469     if ( GetFileInformationByHandle( hFile, &bhfi ) )
 470         file_size = bhfi.nFileSizeLow; /* FIXME: 64 bit */
 471
 472     /* Map the PE file somewhere */
 473     mapping = CreateFileMappingA( hFile, NULL, PAGE_READONLY | SEC_COMMIT,
 474                                     0, 0, NULL );
 475     if (!mapping)
 476     {
 477         WARN( win32, "CreateFileMapping error %ld\n", GetLastError() );
 478         return 0;
 479     }
 480     hModule = (HMODULE)MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
 481     CloseHandle( mapping );
 482     if (!hModule)
 483     {
 484         WARN( win32, "MapViewOfFile error %ld\n", GetLastError() );
 485         return 0;
 486     }
 487     nt = PE_HEADER( hModule );
 488
 489     /* Check signature */
 490     if ( nt->Signature != IMAGE_NT_SIGNATURE )
 491     {
 492         WARN(win32, "image doesn't have PE signature, but 0x%08lx\n",
 493                     nt->Signature );
 494         goto error;
 495     }
 496
 497     /* Check architecture */
 498     if ( nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386 )
 499     {
 500         MSG("Trying to load PE image for unsupported architecture (");
 501         switch (nt->FileHeader.Machine)
 502         {
 503         case IMAGE_FILE_MACHINE_UNKNOWN: MSG("Unknown"); break;
 504         case IMAGE_FILE_MACHINE_I860:    MSG("I860"); break;
 505         case IMAGE_FILE_MACHINE_R3000:   MSG("R3000"); break;
 506         case IMAGE_FILE_MACHINE_R4000:   MSG("R4000"); break;
 507         case IMAGE_FILE_MACHINE_R10000:  MSG("R10000"); break;
 508         case IMAGE_FILE_MACHINE_ALPHA:   MSG("Alpha"); break;
 509         case IMAGE_FILE_MACHINE_POWERPC: MSG("PowerPC"); break;
 510         default: MSG("Unknown-%04x", nt->FileHeader.Machine); break;
 511         }
 512         MSG(")\n");
 513         goto error;
 514     }
 515
 516     /* Find out how large this executeable should be */
 517     pe_sec = PE_SECTIONS( hModule );
 518     rawsize = 0; lowest_va = 0x10000; lowest_fa = 0x10000;
 519     for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
 520     {
 521         if (lowest_va > pe_sec[i].VirtualAddress)
 522            lowest_va = pe_sec[i].VirtualAddress;
 523         if (pe_sec[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 524             continue;
 525         if (pe_sec[i].PointerToRawData < lowest_fa)
 526             lowest_fa = pe_sec[i].PointerToRawData;
 527         if (pe_sec[i].PointerToRawData+pe_sec[i].SizeOfRawData > rawsize)
 528             rawsize = pe_sec[i].PointerToRawData+pe_sec[i].SizeOfRawData;
 529     }
 530
 531     /* Check file size */
 532     if ( file_size && file_size < rawsize )
 533     {
 534         ERR( win32, "PE module is too small (header: %d, filesize: %d), "
 535                     "probably truncated download?\n",
 536                     rawsize, file_size );
 537         goto error;
 538     }
 539
 540     /* Check entrypoint address */
 541     aoep = nt->OptionalHeader.AddressOfEntryPoint;
 542     if (aoep && (aoep < lowest_va))
 543         FIXME( win32, "WARNING: '%s' has an invalid entrypoint (0x%08lx) "
 544                       "below the first virtual address (0x%08x) "
 545                       "(possible Virus Infection or broken binary)!\n",
 546                        ofs->szPathName, aoep, lowest_va );
 547
 548
 549     /* Allocate memory for module */
 550     load_addr = nt->OptionalHeader.ImageBase;
 551     vma_size = calc_vma_size( hModule );
 552
 553     load_addr = (DWORD)VirtualAlloc( (void*)load_addr, vma_size,
 554                                      MEM_RESERVE | MEM_COMMIT,
 555                                      PAGE_EXECUTE_READWRITE );
 556     if (load_addr == 0)
 557     {
 558         /* We need to perform base relocations */
 559         dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_BASERELOC;
 560         if (dir->Size)
 561             reloc = dir->VirtualAddress;
 562         else
 563         {
 564             FIXME( win32,
 565                    "Need to relocate %s, but no relocation records present (%s).\n",
 566                    ofs->szPathName,
 567                    (nt->FileHeader.Characteristics&IMAGE_FILE_RELOCS_STRIPPED)?
 568                    "stripped during link" : "unknown reason" );
 569             goto error;
 570         }
 571
 572         load_addr = (DWORD)VirtualAlloc( NULL, vma_size,
 573                                          MEM_RESERVE | MEM_COMMIT,
 574                                          PAGE_EXECUTE_READWRITE );
 575     }
 576
 577     TRACE( win32, "Load addr is %lx (base %lx), range %x\n",
 578                   load_addr, nt->OptionalHeader.ImageBase, vma_size );
 579     TRACE( segment, "Loading %s at %lx, range %x\n",
 580                     ofs->szPathName, load_addr, vma_size );
 581
 582     /* Store the NT header at the load addr */
 583     *(PIMAGE_DOS_HEADER)load_addr = *(PIMAGE_DOS_HEADER)hModule;
 584     *PE_HEADER( load_addr ) = *nt;
 585     memcpy( PE_SECTIONS(load_addr), PE_SECTIONS(hModule),
 586             sizeof(IMAGE_SECTION_HEADER) * nt->FileHeader.NumberOfSections );
 587 #if 0
 588     /* Copies all stuff up to the first section. Including win32 viruses. */
 589     memcpy( load_addr, hModule, lowest_fa );
 590 #endif
 591
 592     /* Copy sections into module image */
 593     pe_sec = PE_SECTIONS( hModule );
 594     for (i = 0; i < nt->FileHeader.NumberOfSections; i++, pe_sec++)
 595     {
 596         /* memcpy only non-BSS segments */
 597         /* FIXME: this should be done by mmap(..MAP_PRIVATE|MAP_FIXED..)
 598          * but it is not possible for (at least) Linux needs
 599          * a page-aligned offset.
 600          */
 601         if(!(pe_sec->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA))
 602             memcpy((char*)RVA(pe_sec->VirtualAddress),
 603                    (char*)(hModule + pe_sec->PointerToRawData),
 604                    pe_sec->SizeOfRawData);
 605 #if 0
 606         /* not needed, memory is zero */
 607         if(strcmp(pe_sec->Name, ".bss") == 0)
 608             memset((void *)RVA(pe_sec->VirtualAddress), 0,
 609                    pe_sec->Misc.VirtualSize ?
 610                    pe_sec->Misc.VirtualSize :
 611                    pe_sec->SizeOfRawData);
 612 #endif
 613     }
 614
 615     /* Perform base relocation, if necessary */
 616     if ( reloc )
 617         do_relocations( load_addr, (IMAGE_BASE_RELOCATION *)RVA(reloc) );
 618
 619     /* Get module name */
 620     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXPORT;
 621     if (dir->Size)
 622         *modName = (LPCSTR)RVA(((PIMAGE_EXPORT_DIRECTORY)RVA(dir->VirtualAddress))->Name);
 623
 624     /* We don't need the orignal mapping any more */
 625     UnmapViewOfFile( (LPVOID)hModule );
 626     return (HMODULE)load_addr;
 627
 628 error:
 629     UnmapViewOfFile( (LPVOID)hModule );
 630     return 0;
 631 }
 632
 633 /**********************************************************************
 634  *                 PE_CreateModule
 635  *
 636  * Create WINE_MODREF structure for loaded HMODULE32, link it into
 637  * process modref_list, and fixup all imports.
 638  *
 639  * Note: hModule must point to a correctly allocated PE image,
 640  *       with base relocations applied; the 16-bit dummy module
 641  *       associated to hModule must already exist.
 642  *
 643  * Note: This routine must always be called in the context of the
 644  *       process that is to own the module to be created.
 645  */
 646 WINE_MODREF *PE_CreateModule( HMODULE hModule,
 647                               OFSTRUCT *ofs, DWORD flags, BOOL builtin )
 648 {
 649     DWORD load_addr = (DWORD)hModule;  /* for RVA */
 650     IMAGE_NT_HEADERS *nt = PE_HEADER(hModule);
 651     IMAGE_DATA_DIRECTORY *dir;
 652     IMAGE_IMPORT_DESCRIPTOR *pe_import = NULL;
 653     IMAGE_EXPORT_DIRECTORY *pe_export = NULL;
 654     IMAGE_RESOURCE_DIRECTORY *pe_resource = NULL;
 655     WINE_MODREF *wm;
 656     int result;
 657     char *modname;
 658
 659
 660     /* Retrieve DataDirectory entries */
 661
 662     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXPORT;
 663     if (dir->Size)
 664         pe_export = (PIMAGE_EXPORT_DIRECTORY)RVA(dir->VirtualAddress);
 665
 666     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_IMPORT;
 667     if (dir->Size)
 668         pe_import = (PIMAGE_IMPORT_DESCRIPTOR)RVA(dir->VirtualAddress);
 669
 670     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_RESOURCE;
 671     if (dir->Size)
 672         pe_resource = (PIMAGE_RESOURCE_DIRECTORY)RVA(dir->VirtualAddress);
 673
 674     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXCEPTION;
 675     if (dir->Size) FIXME( win32, "Exception directory ignored\n" );
 676
 677     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_SECURITY;
 678     if (dir->Size) FIXME( win32, "Security directory ignored\n" );
 679
 680     /* IMAGE_DIRECTORY_ENTRY_BASERELOC handled in PE_LoadImage */
 681     /* IMAGE_DIRECTORY_ENTRY_DEBUG handled by debugger */
 682
 683     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_DEBUG;
 684     if (dir->Size) TRACE( win32, "Debug directory ignored\n" );
 685
 686     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_COPYRIGHT;
 687     if (dir->Size) FIXME( win32, "Copyright string ignored\n" );
 688
 689     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_GLOBALPTR;
 690     if (dir->Size) FIXME( win32, "Global Pointer (MIPS) ignored\n" );
 691
 692     /* IMAGE_DIRECTORY_ENTRY_TLS handled in PE_TlsInit */
 693
 694     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG;
 695     if (dir->Size) FIXME (win32, "Load Configuration directory ignored\n" );
 696
 697     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT;
 698     if (dir->Size) TRACE( win32, "Bound Import directory ignored\n" );
 699
 700     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_IAT;
 701     if (dir->Size) TRACE( win32, "Import Address Table directory ignored\n" );
 702
 703     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT;
 704     if (dir->Size)
 705     {
 706                 TRACE( win32, "Delayed import, stub calls LoadLibrary\n" );
 707                 /*
 708                  * Nothing to do here.
 709                  */
 710
 711 #ifdef ImgDelayDescr
 712                 /*
 713                  * This code is useful to observe what the heck is going on.
 714                  */
 715                 {
 716                 ImgDelayDescr *pe_delay = NULL;
 717         pe_delay = (PImgDelayDescr)RVA(dir->VirtualAddress);
 718         TRACE(delayhlp,"pe_delay->grAttrs = %08x\n", pe_delay->grAttrs);
 719         TRACE(delayhlp,"pe_delay->szName = %s\n", pe_delay->szName);
 720         TRACE(delayhlp,"pe_delay->phmod = %08x\n", pe_delay->phmod);
 721         TRACE(delayhlp,"pe_delay->pIAT = %08x\n", pe_delay->pIAT);
 722         TRACE(delayhlp,"pe_delay->pINT = %08x\n", pe_delay->pINT);
 723         TRACE(delayhlp,"pe_delay->pBoundIAT = %08x\n", pe_delay->pBoundIAT);
 724         TRACE(delayhlp,"pe_delay->pUnloadIAT = %08x\n", pe_delay->pUnloadIAT);
 725         TRACE(delayhlp,"pe_delay->dwTimeStamp = %08x\n", pe_delay->dwTimeStamp);
 726         }
 727 #endif /* ImgDelayDescr */
 728         }
 729
 730     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR;
 731     if (dir->Size) FIXME( win32, "Unknown directory 14 ignored\n" );
 732
 733     dir = nt->OptionalHeader.DataDirectory+15;
 734     if (dir->Size) FIXME( win32, "Unknown directory 15 ignored\n" );
 735
 736
 737     /* Allocate and fill WINE_MODREF */
 738
 739     wm = (WINE_MODREF *)HeapAlloc( GetProcessHeap(),
 740                                    HEAP_ZERO_MEMORY, sizeof(*wm) );
 741     wm->module = hModule;
 742
 743     wm->type = MODULE32_PE;
 744     wm->binfmt.pe.flags = builtin? PE_MODREF_INTERNAL : 0;
 745     wm->binfmt.pe.pe_export = pe_export;
 746     wm->binfmt.pe.pe_import = pe_import;
 747     wm->binfmt.pe.pe_resource = pe_resource;
 748
 749     if ( pe_export )
 750         modname = (char *)RVA( pe_export->Name );
 751     else
 752     {
 753         /* try to find out the name from the OFSTRUCT */
 754         char *s;
 755         modname = ofs->szPathName;
 756         while ((s=strchr(modname,'\\')))
 757             modname = s+1;
 758     }
 759     wm->modname = HEAP_strdupA( GetProcessHeap(), 0, modname );
 760
 761     result = GetLongPathNameA( ofs->szPathName, NULL, 0 );
 762     wm->longname = (char *)HeapAlloc( GetProcessHeap(), 0, result+1 );
 763     GetLongPathNameA( ofs->szPathName, wm->longname, result+1 );
 764
 765     wm->shortname = HEAP_strdupA( GetProcessHeap(), 0, ofs->szPathName );
 766
 767     /* Link MODREF into process list */
 768
 769     wm->next = PROCESS_Current()->modref_list;
 770     PROCESS_Current()->modref_list = wm;
 771
 772     if ( !(nt->FileHeader.Characteristics & IMAGE_FILE_DLL) )
 773     {
 774         if ( PROCESS_Current()->exe_modref )
 775             FIXME( win32, "overwriting old exe_modref... arrgh\n" );
 776         PROCESS_Current()->exe_modref = wm;
 777     }
 778
 779     /* Dump Exports */
 780
 781     if ( pe_export )
 782         dump_exports( hModule );
 783
 784     /* Fixup Imports */
 785
 786     if ( pe_import && fixup_imports( wm ) )
 787     {
 788         /* remove entry from modref chain */
 789         WINE_MODREF **xwm;
 790         for ( xwm = &PROCESS_Current()->modref_list; *xwm; xwm = &(*xwm)->next )
 791             if ( *xwm == wm )
 792             {
 793                 *xwm = wm->next;
 794                 break;
 795             }
 796         /* FIXME: there are several more dangling references
 797          * left. Including dlls loaded by this dll before the
 798          * failed one. Unrolling is rather difficult with the
 799          * current structure and we can leave it them lying
 800          * around with no problems, so we don't care.
 801          * As these might reference our wm, we don't free it.
 802          */
 803          return NULL;
 804     }
 805
 806     return wm;
 807 }
 808
 809 /******************************************************************************
 810  * The PE Library Loader frontend.
 811  * FIXME: handle the flags.
 812  */
 813 HMODULE PE_LoadLibraryExA (LPCSTR name,
 814                                HFILE hFile, DWORD flags)
 815 {
 816     LPCSTR      modName = NULL;
 817     OFSTRUCT    ofs;
 818     HMODULE     hModule32;
 819     HMODULE16   hModule16;
 820     NE_MODULE   *pModule;
 821     WINE_MODREF *wm;
 822     BOOL        builtin = TRUE;
 823     char        dllname[256], *p;
 824
 825     /* Check for already loaded module */
 826     if ((hModule32 = MODULE_FindModule( name )))
 827         return hModule32;
 828
 829     /* Append .DLL to name if no extension present */
 830     strcpy( dllname, name );
 831     if (!(p = strrchr( dllname, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
 832         strcat( dllname, ".DLL" );
 833
 834     /* Try to load builtin enabled modules first */
 835     if ( !(hModule32 = BUILTIN32_LoadImage( name, &ofs, FALSE )) )
 836     {
 837         /* Load PE module */
 838
 839         hFile = OpenFile( dllname, &ofs, OF_READ | OF_SHARE_DENY_WRITE );
 840         if ( hFile != HFILE_ERROR )
 841             if ( (hModule32 = PE_LoadImage( hFile, &ofs, &modName )) >= 32 )
 842                 builtin = FALSE;
 843
 844         CloseHandle( hFile );
 845     }
 846
 847     /* Now try the built-in even if disabled */
 848     if ( builtin ) {
 849         if ( (hModule32 = BUILTIN32_LoadImage( name, &ofs, TRUE )) )
 850             WARN( module, "Could not load external DLL '%s', using built-in module.\n", name );
 851         else
 852             return 0;
 853     }
 854
 855
 856     /* Create 16-bit dummy module */
 857     if ((hModule16 = MODULE_CreateDummyModule( &ofs, modName )) < 32) return hModule16;
 858     pModule = (NE_MODULE *)GlobalLock16( hModule16 );
 859     pModule->flags    = NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA |
 860                         NE_FFLAGS_WIN32 | (builtin? NE_FFLAGS_BUILTIN : 0);
 861     pModule->module32 = hModule32;
 862
 863     /* Create 32-bit MODREF */
 864     if ( !(wm = PE_CreateModule( hModule32, &ofs, flags, builtin )) )
 865     {
 866         ERR(win32,"can't load %s\n",ofs.szPathName);
 867         FreeLibrary16( hModule16 );
 868         return 0;
 869     }
 870
 871     if (wm->binfmt.pe.pe_export)
 872         SNOOP_RegisterDLL(wm->module,wm->modname,wm->binfmt.pe.pe_export->NumberOfFunctions);
 873
 874     return wm->module;
 875 }
 876
 877 /*****************************************************************************
 878  * Load the PE main .EXE. All other loading is done by PE_LoadLibraryExA
 879  * FIXME: this function should use PE_LoadLibraryExA, but currently can't
 880  * due to the PROCESS_Create stuff.
 881  */
 882 BOOL PE_CreateProcess( HFILE hFile, OFSTRUCT *ofs, LPCSTR cmd_line, LPCSTR env,
 883                        LPSECURITY_ATTRIBUTES psa, LPSECURITY_ATTRIBUTES tsa,
 884                        BOOL inherit, LPSTARTUPINFOA startup,
 885                        LPPROCESS_INFORMATION info )
 886 {
 887     LPCSTR modName = NULL;
 888     HMODULE16 hModule16;
 889     HMODULE hModule32;
 890     NE_MODULE *pModule;
 891
 892     /* Load file */
 893     if ( (hModule32 = PE_LoadImage( hFile, ofs, &modName )) < 32 )
 894     {
 895         SetLastError( hModule32 );
 896         return FALSE;
 897     }
 898 #if 0
 899     if (PE_HEADER(hModule32)->FileHeader.Characteristics & IMAGE_FILE_DLL)
 900     {
 901         SetLastError( 20 );  /* FIXME: not the right error code */
 902         return FALSE;
 903     }
 904 #endif
 905
 906     /* Create 16-bit dummy module */
 907     if ( (hModule16 = MODULE_CreateDummyModule( ofs, modName )) < 32 )
 908     {
 909         SetLastError( hModule16 );
 910         return FALSE;
 911     }
 912     pModule = (NE_MODULE *)GlobalLock16( hModule16 );
 913     pModule->flags    = NE_FFLAGS_WIN32;
 914     pModule->module32 = hModule32;
 915
 916     /* Create new process */
 917     if ( !PROCESS_Create( pModule, cmd_line, env,
 918                           0, 0, psa, tsa, inherit, startup, info ) )
 919         return FALSE;
 920
 921     /* Note: PE_CreateModule and the remaining process initialization will
 922              be done in the context of the new process, in TASK_CallToStart */
 923
 924     return TRUE;
 925 }
 926
 927 /*********************************************************************
 928  * PE_UnloadImage [internal]
 929  */
 930 int PE_UnloadImage( HMODULE hModule )
 931 {
 932         FIXME(win32,"stub.\n");
 933         /* free resources, image, unmap */
 934         return 1;
 935 }
 936
 937 /* Called if the library is loaded or freed.
 938  * NOTE: if a thread attaches a DLL, the current thread will only do
 939  * DLL_PROCESS_ATTACH. Only new created threads do DLL_THREAD_ATTACH
 940  * (SDK)
 941  */
 942 void PE_InitDLL(WINE_MODREF *wm, DWORD type, LPVOID lpReserved)
 943 {
 944     if (wm->type!=MODULE32_PE)
 945         return;
 946     if (wm->binfmt.pe.flags & PE_MODREF_NO_DLL_CALLS)
 947         return;
 948     if (type==DLL_PROCESS_ATTACH)
 949     {
 950         if (wm->binfmt.pe.flags & PE_MODREF_PROCESS_ATTACHED)
 951             return;
 952
 953         wm->binfmt.pe.flags |= PE_MODREF_PROCESS_ATTACHED;
 954     }
 955
 956     /*  DLL_ATTACH_PROCESS:
 957      *          lpreserved is NULL for dynamic loads, not-NULL for static loads
 958      *  DLL_DETACH_PROCESS:
 959      *          lpreserved is NULL if called by FreeLibrary, not-NULL otherwise
 960      *  the SDK doesn't mention anything for DLL_THREAD_*
 961      */
 962
 963     /* Is this a library? And has it got an entrypoint? */
 964     if ((PE_HEADER(wm->module)->FileHeader.Characteristics & IMAGE_FILE_DLL) &&
 965         (PE_HEADER(wm->module)->OptionalHeader.AddressOfEntryPoint)
 966     ) {
 967         DLLENTRYPROC entry = (void*)RVA_PTR( wm->module,OptionalHeader.AddressOfEntryPoint );
 968         TRACE(relay, "CallTo32(entryproc=%p,module=%08x,type=%ld,res=%p)\n",
 969                        entry, wm->module, type, lpReserved );
 970
 971         entry( wm->module, type, lpReserved );
 972     }
 973 }
 974
 975 /************************************************************************
 976  *      PE_InitTls                      (internal)
 977  *
 978  * If included, initialises the thread local storages of modules.
 979  * Pointers in those structs are not RVAs but real pointers which have been
 980  * relocated by do_relocations() already.
 981  */
 982 void PE_InitTls(THDB *thdb)
 983 {
 984         WINE_MODREF             *wm;
 985         PE_MODREF               *pem;
 986         IMAGE_NT_HEADERS        *peh;
 987         DWORD                   size,datasize;
 988         LPVOID                  mem;
 989         PIMAGE_TLS_DIRECTORY    pdir;
 990         PDB                     *pdb = thdb->process;
 991         int delta;
 992
 993         for (wm = pdb->modref_list;wm;wm=wm->next) {
 994                 if (wm->type!=MODULE32_PE)
 995                         continue;
 996                 pem = &(wm->binfmt.pe);
 997                 peh = PE_HEADER(wm->module);
 998                 delta = wm->module - peh->OptionalHeader.ImageBase;
 999                 if (!peh->OptionalHeader.DataDirectory[IMAGE_FILE_THREAD_LOCAL_STORAGE].VirtualAddress)
1000                         continue;
1001                 pdir = (LPVOID)(wm->module + peh->OptionalHeader.
1002                         DataDirectory[IMAGE_FILE_THREAD_LOCAL_STORAGE].VirtualAddress);
1003
1004
1005                 if (!(pem->flags & PE_MODREF_TLS_ALLOCED)) {
1006                         pem->tlsindex = THREAD_TlsAlloc(thdb);
1007                         *pdir->AddressOfIndex=pem->tlsindex;
1008                 }
1009                 pem->flags |= PE_MODREF_TLS_ALLOCED;
1010                 datasize= pdir->EndAddressOfRawData-pdir->StartAddressOfRawData;
1011                 size    = datasize + pdir->SizeOfZeroFill;
1012                 mem=VirtualAlloc(0,size,MEM_RESERVE|MEM_COMMIT,PAGE_READWRITE);
1013                 memcpy(mem,(LPVOID)pdir->StartAddressOfRawData,datasize);
1014                 if (pdir->AddressOfCallBacks) {
1015                      PIMAGE_TLS_CALLBACK *cbs =
1016                        (PIMAGE_TLS_CALLBACK *)pdir->AddressOfCallBacks;
1017
1018                      if (*cbs)
1019                        FIXME(win32, "TLS Callbacks aren't going to be called\n");
1020                 }
1021                 /* Don't use TlsSetValue, we are in the wrong thread */
1022                 thdb->tls_array[pem->tlsindex] = mem;
1023         }
1024 }
1025
1026 /****************************************************************************
1027  *              DisableThreadLibraryCalls (KERNEL32.74)
1028  * Don't call DllEntryPoint for DLL_THREAD_{ATTACH,DETACH} if set.
1029  */
1030 BOOL WINAPI DisableThreadLibraryCalls(HMODULE hModule)
1031 {
1032         WINE_MODREF     *wm;
1033
1034         for (wm=PROCESS_Current()->modref_list;wm;wm=wm->next)
1035                 if ((wm->module == hModule) && (wm->type==MODULE32_PE))
1036                         wm->binfmt.pe.flags|=PE_MODREF_NO_DLL_CALLS;
1037         return TRUE;
1038 }