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  * - All those function map things into a new addresspace. From the wrong
  35  *   process and the wrong thread. So calling other API functions will mess
  36  *   things up badly sometimes.
  37  */
  38
  39 #include <errno.h>
  40 #include <assert.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43 #include <unistd.h>
  44 #include <sys/types.h>
  45 #include <sys/stat.h>
  46 #include <sys/mman.h>
  47 #include "windows.h"
  48 #include "winbase.h"
  49 #include "callback.h"
  50 #include "file.h"
  51 #include "heap.h"
  52 #include "neexe.h"
  53 #include "peexe.h"
  54 #include "process.h"
  55 #include "thread.h"
  56 #include "pe_image.h"
  57 #include "module.h"
  58 #include "global.h"
  59 #include "task.h"
  60 #include "snoop.h"
  61 #include "debug.h"
  62
  63
  64 /* convert PE image VirtualAddress to Real Address */
  65 #define RVA(x) ((unsigned int)load_addr+(unsigned int)(x))
  66
  67 #define AdjustPtr(ptr,delta) ((char *)(ptr) + (delta))
  68
  69 void dump_exports( HMODULE32 hModule )
  70 {
  71   char          *Module;
  72   int           i, j;
  73   u_short       *ordinal;
  74   u_long        *function,*functions;
  75   u_char        **name;
  76   unsigned int load_addr = hModule;
  77
  78   DWORD rva_start = PE_HEADER(hModule)->OptionalHeader
  79                    .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
  80   DWORD rva_end = rva_start + PE_HEADER(hModule)->OptionalHeader
  81                    .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
  82   IMAGE_EXPORT_DIRECTORY *pe_exports = (IMAGE_EXPORT_DIRECTORY*)RVA(rva_start);
  83
  84   Module = (char*)RVA(pe_exports->Name);
  85   TRACE(win32,"*******EXPORT DATA*******\n");
  86   TRACE(win32,"Module name is %s, %ld functions, %ld names\n",
  87                Module, pe_exports->NumberOfFunctions, pe_exports->NumberOfNames);
  88
  89   ordinal=(u_short*) RVA(pe_exports->AddressOfNameOrdinals);
  90   functions=function=(u_long*) RVA(pe_exports->AddressOfFunctions);
  91   name=(u_char**) RVA(pe_exports->AddressOfNames);
  92
  93   TRACE(win32," Ord    RVA     Addr   Name\n" );
  94   for (i=0;i<pe_exports->NumberOfFunctions;i++, function++)
  95   {
  96       if (!*function) continue;  /* No such function */
  97       if (TRACE_ON(win32)){
  98         dbg_decl_str(win32, 1024);
  99
 100         dsprintf(win32,"%4ld %08lx %08x",
 101                  i + pe_exports->Base, *function, RVA(*function) );
 102         /* Check if we have a name for it */
 103         for (j = 0; j < pe_exports->NumberOfNames; j++)
 104           if (ordinal[j] == i)
 105             dsprintf(win32, "  %s", (char*)RVA(name[j]) );
 106         if ((*function >= rva_start) && (*function <= rva_end))
 107           dsprintf(win32, " (forwarded -> %s)", (char *)RVA(*function));
 108         TRACE(win32,"%s\n", dbg_str(win32));
 109       }
 110   }
 111 }
 112
 113 /* Look up the specified function or ordinal in the exportlist:
 114  * If it is a string:
 115  *      - look up the name in the Name list.
 116  *      - look up the ordinal with that index.
 117  *      - use the ordinal as offset into the functionlist
 118  * If it is a ordinal:
 119  *      - use ordinal-pe_export->Base as offset into the functionlist
 120  */
 121 FARPROC32 PE_FindExportedFunction(
 122         PDB32 *process,         /* [in] process context */
 123         WINE_MODREF *wm,        /* [in] WINE modreference */
 124         LPCSTR funcName,        /* [in] function name */
 125         BOOL32 snoop )
 126 {
 127         u_short                         * ordinal;
 128         u_long                          * function;
 129         u_char                          ** name, *ename;
 130         int                             i;
 131         PE_MODREF                       *pem = &(wm->binfmt.pe);
 132         IMAGE_EXPORT_DIRECTORY          *exports = pem->pe_export;
 133         unsigned int                    load_addr = wm->module;
 134         u_long                          rva_start, rva_end, addr;
 135         char                            * forward;
 136
 137         if (HIWORD(funcName))
 138                 TRACE(win32,"(%s)\n",funcName);
 139         else
 140                 TRACE(win32,"(%d)\n",(int)funcName);
 141         if (!exports) {
 142                 /* Not a fatal problem, some apps do
 143                  * GetProcAddress(0,"RegisterPenApp") which triggers this
 144                  * case.
 145                  */
 146                 WARN(win32,"Module %08x(%s)/MODREF %p doesn't have a exports table.\n",wm->module,wm->modname,pem);
 147                 return NULL;
 148         }
 149         ordinal = (u_short*)  RVA(exports->AddressOfNameOrdinals);
 150         function= (u_long*)   RVA(exports->AddressOfFunctions);
 151         name    = (u_char **) RVA(exports->AddressOfNames);
 152         forward = NULL;
 153         rva_start = PE_HEADER(wm->module)->OptionalHeader
 154                 .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
 155         rva_end = rva_start + PE_HEADER(wm->module)->OptionalHeader
 156                 .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
 157
 158         if (HIWORD(funcName)) {
 159                 for(i=0; i<exports->NumberOfNames; i++) {
 160                         ename=(char*)RVA(*name);
 161                         if(!strcmp(ename,funcName))
 162                         {
 163                             addr = function[*ordinal];
 164                             if (!addr) return NULL;
 165                             if ((addr < rva_start) || (addr >= rva_end))
 166                                 return snoop? SNOOP_GetProcAddress32(wm->module,ename,*ordinal,(FARPROC32)RVA(addr))
 167                                             : (FARPROC32)RVA(addr);
 168                             forward = (char *)RVA(addr);
 169                             break;
 170                         }
 171                         ordinal++;
 172                         name++;
 173                 }
 174         } else  {
 175                 int i;
 176                 if (LOWORD(funcName)-exports->Base > exports->NumberOfFunctions) {
 177                         TRACE(win32,"   ordinal %d out of range!\n",
 178                                       LOWORD(funcName));
 179                         return NULL;
 180                 }
 181                 addr = function[(int)funcName-exports->Base];
 182                 if (!addr) return NULL;
 183                 ename = "";
 184                 if (name) {
 185                     for (i=0;i<exports->NumberOfNames;i++) {
 186                             ename = (char*)RVA(*name);
 187                             if (*ordinal == LOWORD(funcName)-exports->Base)
 188                                 break;
 189                             ordinal++;
 190                             name++;
 191                     }
 192                     if (i==exports->NumberOfNames)
 193                         ename = "";
 194                 }
 195                 if ((addr < rva_start) || (addr >= rva_end))
 196                         return snoop? SNOOP_GetProcAddress32(wm->module,ename,(DWORD)funcName-exports->Base,(FARPROC32)RVA(addr))
 197                                     : (FARPROC32)RVA(addr);
 198                 forward = (char *)RVA(addr);
 199         }
 200         if (forward)
 201         {
 202                 HMODULE32 hMod;
 203                 char module[256];
 204                 char *end = strchr(forward, '.');
 205
 206                 if (!end) return NULL;
 207                 assert(end-forward<256);
 208                 strncpy(module, forward, (end - forward));
 209                 module[end-forward] = 0;
 210                 hMod = MODULE_FindModule32(process,module);
 211                 assert(hMod);
 212                 return MODULE_GetProcAddress32( process, hMod, end + 1, snoop );
 213         }
 214         return NULL;
 215 }
 216
 217 DWORD fixup_imports (PDB32 *process,WINE_MODREF *wm)
 218 {
 219     IMAGE_IMPORT_DESCRIPTOR     *pe_imp;
 220     WINE_MODREF                 *xwm;
 221     PE_MODREF                   *pem;
 222     unsigned int load_addr      = wm->module;
 223     int                         i,characteristics_detection=1;
 224     char                        *modname;
 225
 226     assert(wm->type==MODULE32_PE);
 227     pem = &(wm->binfmt.pe);
 228     if (pem->pe_export)
 229         modname = (char*) RVA(pem->pe_export->Name);
 230     else
 231         modname = "<unknown>";
 232
 233     /* OK, now dump the import list */
 234     TRACE(win32, "Dumping imports list\n");
 235
 236     /* first, count the number of imported non-internal modules */
 237     pe_imp = pem->pe_import;
 238     if (!pe_imp)
 239         ERR(win32, "no import directory????\n");
 240
 241     /* We assume that we have at least one import with !0 characteristics and
 242      * detect broken imports with all characteristsics 0 (notably Borland) and
 243      * switch the detection off for them.
 244      */
 245     for (i = 0; pe_imp->Name ; pe_imp++) {
 246         if (!i && !pe_imp->u.Characteristics)
 247                 characteristics_detection = 0;
 248         if (characteristics_detection && !pe_imp->u.Characteristics)
 249                 break;
 250         i++;
 251     }
 252
 253     /* Allocate module dependency list */
 254     wm->nDeps = i;
 255     wm->deps  = HeapAlloc(process->heap, 0, i*sizeof(WINE_MODREF *));
 256
 257     /* load the imported modules. They are automatically
 258      * added to the modref list of the process.
 259      */
 260
 261     for (i = 0, pe_imp = pem->pe_import; pe_imp->Name ; pe_imp++) {
 262         HMODULE32               hImpModule;
 263         IMAGE_IMPORT_BY_NAME    *pe_name;
 264         PIMAGE_THUNK_DATA       import_list,thunk_list;
 265         char                    *name = (char *) RVA(pe_imp->Name);
 266
 267         if (characteristics_detection && !pe_imp->u.Characteristics)
 268                 break;
 269
 270         /* don't use MODULE_Load, Win32 creates new task differently */
 271         hImpModule = MODULE_LoadLibraryEx32A( name, process, 0, 0 );
 272         if (!hImpModule) {
 273             char *p,buffer[2000];
 274
 275             /* GetModuleFileName would use the wrong process, so don't use it */
 276             strcpy(buffer,wm->shortname);
 277             if (!(p = strrchr (buffer, '\\')))
 278                 p = buffer;
 279             strcpy (p + 1, name);
 280             hImpModule = MODULE_LoadLibraryEx32A( buffer, process, 0, 0 );
 281         }
 282         if (!hImpModule) {
 283             ERR (module, "Module %s not found\n", name);
 284             return 1;
 285         }
 286         xwm = MODULE32_LookupHMODULE(process, hImpModule);
 287         assert( xwm );
 288         wm->deps[i++] = xwm;
 289
 290         /* FIXME: forwarder entries ... */
 291
 292         if (pe_imp->u.OriginalFirstThunk != 0) { /* original MS style */
 293             TRACE(win32, "Microsoft style imports used\n");
 294             import_list =(PIMAGE_THUNK_DATA) RVA(pe_imp->u.OriginalFirstThunk);
 295             thunk_list = (PIMAGE_THUNK_DATA) RVA(pe_imp->FirstThunk);
 296
 297             while (import_list->u1.Ordinal) {
 298                 if (IMAGE_SNAP_BY_ORDINAL(import_list->u1.Ordinal)) {
 299                     int ordinal = IMAGE_ORDINAL(import_list->u1.Ordinal);
 300
 301                     TRACE(win32, "--- Ordinal %s,%d\n", name, ordinal);
 302                     thunk_list->u1.Function=MODULE_GetProcAddress32(
 303                         process, hImpModule, (LPCSTR)ordinal, TRUE
 304                     );
 305                     if (!thunk_list->u1.Function) {
 306                         ERR(win32,"No implementation for %s.%d, setting to 0xdeadbeef\n",
 307                                 name, ordinal);
 308                         thunk_list->u1.Function = (FARPROC32)0xdeadbeef;
 309                     }
 310                 } else {                /* import by name */
 311                     pe_name = (PIMAGE_IMPORT_BY_NAME)RVA(import_list->u1.AddressOfData);
 312                     TRACE(win32, "--- %s %s.%d\n", pe_name->Name, name, pe_name->Hint);
 313                     thunk_list->u1.Function=MODULE_GetProcAddress32(
 314                         process, hImpModule, pe_name->Name, TRUE
 315                     );
 316                     if (!thunk_list->u1.Function) {
 317                         ERR(win32,"No implementation for %s.%d(%s), setting to 0xdeadbeef\n",
 318                                 name,pe_name->Hint,pe_name->Name);
 319                         thunk_list->u1.Function = (FARPROC32)0xdeadbeef;
 320                     }
 321                 }
 322                 import_list++;
 323                 thunk_list++;
 324             }
 325         } else {        /* Borland style */
 326             TRACE(win32, "Borland style imports used\n");
 327             thunk_list = (PIMAGE_THUNK_DATA) RVA(pe_imp->FirstThunk);
 328             while (thunk_list->u1.Ordinal) {
 329                 if (IMAGE_SNAP_BY_ORDINAL(thunk_list->u1.Ordinal)) {
 330                     /* not sure about this branch, but it seems to work */
 331                     int ordinal = IMAGE_ORDINAL(thunk_list->u1.Ordinal);
 332
 333                     TRACE(win32,"--- Ordinal %s.%d\n",name,ordinal);
 334                     thunk_list->u1.Function=MODULE_GetProcAddress32(
 335                         process, hImpModule, (LPCSTR) ordinal, TRUE
 336                     );
 337                     if (!thunk_list->u1.Function) {
 338                         ERR(win32, "No implementation for %s.%d, setting to 0xdeadbeef\n",
 339                                 name,ordinal);
 340                         thunk_list->u1.Function = (FARPROC32)0xdeadbeef;
 341                     }
 342                 } else {
 343                     pe_name=(PIMAGE_IMPORT_BY_NAME) RVA(thunk_list->u1.AddressOfData);
 344                     TRACE(win32,"--- %s %s.%d\n",
 345                                   pe_name->Name,name,pe_name->Hint);
 346                     thunk_list->u1.Function=MODULE_GetProcAddress32(
 347                         process, hImpModule, pe_name->Name, TRUE
 348                     );
 349                     if (!thunk_list->u1.Function) {
 350                         ERR(win32, "No implementation for %s.%d, setting to 0xdeadbeef\n",
 351                                 name, pe_name->Hint);
 352                         thunk_list->u1.Function = (FARPROC32)0xdeadbeef;
 353                     }
 354                 }
 355                 thunk_list++;
 356             }
 357         }
 358     }
 359     return 0;
 360 }
 361
 362 static int calc_vma_size( HMODULE32 hModule )
 363 {
 364     int i,vma_size = 0;
 365     IMAGE_SECTION_HEADER *pe_seg = PE_SECTIONS(hModule);
 366
 367     TRACE(win32, "Dump of segment table\n");
 368     TRACE(win32, "   Name    VSz  Vaddr     SzRaw   Fileadr  *Reloc *Lineum #Reloc #Linum Char\n");
 369     for (i = 0; i< PE_HEADER(hModule)->FileHeader.NumberOfSections; i++)
 370     {
 371         TRACE(win32, "%8s: %4.4lx %8.8lx %8.8lx %8.8lx %8.8lx %8.8lx %4.4x %4.4x %8.8lx\n",
 372                       pe_seg->Name,
 373                       pe_seg->Misc.VirtualSize,
 374                       pe_seg->VirtualAddress,
 375                       pe_seg->SizeOfRawData,
 376                       pe_seg->PointerToRawData,
 377                       pe_seg->PointerToRelocations,
 378                       pe_seg->PointerToLinenumbers,
 379                       pe_seg->NumberOfRelocations,
 380                       pe_seg->NumberOfLinenumbers,
 381                       pe_seg->Characteristics);
 382         vma_size=MAX(vma_size, pe_seg->VirtualAddress+pe_seg->SizeOfRawData);
 383         vma_size=MAX(vma_size, pe_seg->VirtualAddress+pe_seg->Misc.VirtualSize);
 384         pe_seg++;
 385     }
 386     return vma_size;
 387 }
 388
 389 static void do_relocations( unsigned int load_addr, IMAGE_BASE_RELOCATION *r )
 390 {
 391     int delta = load_addr - PE_HEADER(load_addr)->OptionalHeader.ImageBase;
 392     int hdelta = (delta >> 16) & 0xFFFF;
 393     int ldelta = delta & 0xFFFF;
 394
 395         if(delta == 0)
 396                 /* Nothing to do */
 397                 return;
 398         while(r->VirtualAddress)
 399         {
 400                 char *page = (char*) RVA(r->VirtualAddress);
 401                 int count = (r->SizeOfBlock - 8)/2;
 402                 int i;
 403                 TRACE(fixup, "%x relocations for page %lx\n",
 404                         count, r->VirtualAddress);
 405                 /* patching in reverse order */
 406                 for(i=0;i<count;i++)
 407                 {
 408                         int offset = r->TypeOffset[i] & 0xFFF;
 409                         int type = r->TypeOffset[i] >> 12;
 410                         TRACE(fixup,"patching %x type %x\n", offset, type);
 411                         switch(type)
 412                         {
 413                         case IMAGE_REL_BASED_ABSOLUTE: break;
 414                         case IMAGE_REL_BASED_HIGH:
 415                                 *(short*)(page+offset) += hdelta;
 416                                 break;
 417                         case IMAGE_REL_BASED_LOW:
 418                                 *(short*)(page+offset) += ldelta;
 419                                 break;
 420                         case IMAGE_REL_BASED_HIGHLOW:
 421 #if 1
 422                                 *(int*)(page+offset) += delta;
 423 #else
 424                                 { int h=*(unsigned short*)(page+offset);
 425                                   int l=r->TypeOffset[++i];
 426                                   *(unsigned int*)(page + offset) = (h<<16) + l + delta;
 427                                 }
 428 #endif
 429                                 break;
 430                         case IMAGE_REL_BASED_HIGHADJ:
 431                                 FIXME(win32, "Don't know what to do with IMAGE_REL_BASED_HIGHADJ\n");
 432                                 break;
 433                         case IMAGE_REL_BASED_MIPS_JMPADDR:
 434                                 FIXME(win32, "Is this a MIPS machine ???\n");
 435                                 break;
 436                         default:
 437                                 FIXME(win32, "Unknown fixup type\n");
 438                                 break;
 439                         }
 440                 }
 441                 r = (IMAGE_BASE_RELOCATION*)((char*)r + r->SizeOfBlock);
 442         }
 443 }
 444
 445
 446
 447
 448
 449 /**********************************************************************
 450  *                      PE_LoadImage
 451  * Load one PE format DLL/EXE into memory
 452  *
 453  * Unluckily we can't just mmap the sections where we want them, for
 454  * (at least) Linux does only support offsets which are page-aligned.
 455  *
 456  * BUT we have to map the whole image anyway, for Win32 programs sometimes
 457  * want to access them. (HMODULE32 point to the start of it)
 458  */
 459 static HMODULE32 PE_LoadImage( LPCSTR name, OFSTRUCT *ofs, LPCSTR *modName )
 460 {
 461     HMODULE32   hModule;
 462     HFILE32     hFile;
 463     HANDLE32    mapping;
 464
 465     IMAGE_NT_HEADERS *nt;
 466     IMAGE_SECTION_HEADER *pe_sec;
 467     IMAGE_DATA_DIRECTORY *dir;
 468     BY_HANDLE_FILE_INFORMATION bhfi;
 469     int i, rawsize, lowest_va, lowest_fa, vma_size, file_size = 0;
 470     DWORD load_addr, aoep, reloc = 0;
 471     char dllname[256], *p;
 472
 473     /* Append .DLL to name if no extension present */
 474     strcpy( dllname, name );
 475     if ((p = strrchr( dllname, '\\' ))) p++; else p = dllname;
 476     if (!strchr( p, '.' )) strcat( dllname, ".DLL" );
 477
 478     /* Open PE file */
 479     hFile = OpenFile32( dllname, ofs, OF_READ | OF_SHARE_DENY_WRITE );
 480     if ( hFile == HFILE_ERROR32 )
 481     {
 482         WARN( win32, "OpenFile error %ld\n", GetLastError() );
 483         return 2;
 484     }
 485
 486     /* Retrieve file size */
 487     if ( GetFileInformationByHandle( hFile, &bhfi ) )
 488         file_size = bhfi.nFileSizeLow; /* FIXME: 64 bit */
 489
 490     /* Map the PE file somewhere */
 491     mapping = CreateFileMapping32A( hFile, NULL, PAGE_READONLY | SEC_COMMIT,
 492                                     0, 0, NULL );
 493     CloseHandle( hFile );
 494     if (!mapping)
 495     {
 496         WARN( win32, "CreateFileMapping error %ld\n", GetLastError() );
 497         return 0;
 498     }
 499     hModule = (HMODULE32)MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
 500     CloseHandle( mapping );
 501     if (!hModule)
 502     {
 503         WARN( win32, "MapViewOfFile error %ld\n", GetLastError() );
 504         return 0;
 505     }
 506     nt = PE_HEADER( hModule );
 507
 508     /* Check signature */
 509     if ( nt->Signature != IMAGE_NT_SIGNATURE )
 510     {
 511         WARN(win32, "image doesn't have PE signature, but 0x%08lx\n",
 512                     nt->Signature );
 513         goto error;
 514     }
 515
 516     /* Check architecture */
 517     if ( nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386 )
 518     {
 519         MSG("Trying to load PE image for unsupported architecture (");
 520         switch (nt->FileHeader.Machine)
 521         {
 522         case IMAGE_FILE_MACHINE_UNKNOWN: MSG("Unknown"); break;
 523         case IMAGE_FILE_MACHINE_I860:    MSG("I860"); break;
 524         case IMAGE_FILE_MACHINE_R3000:   MSG("R3000"); break;
 525         case IMAGE_FILE_MACHINE_R4000:   MSG("R4000"); break;
 526         case IMAGE_FILE_MACHINE_R10000:  MSG("R10000"); break;
 527         case IMAGE_FILE_MACHINE_ALPHA:   MSG("Alpha"); break;
 528         case IMAGE_FILE_MACHINE_POWERPC: MSG("PowerPC"); break;
 529         default: MSG("Unknown-%04x", nt->FileHeader.Machine); break;
 530         }
 531         MSG(")\n");
 532         goto error;
 533     }
 534
 535     /* Find out how large this executeable should be */
 536     pe_sec = PE_SECTIONS( hModule );
 537     rawsize = 0; lowest_va = 0x10000; lowest_fa = 0x10000;
 538     for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
 539     {
 540         if (lowest_va > pe_sec[i].VirtualAddress)
 541            lowest_va = pe_sec[i].VirtualAddress;
 542         if (pe_sec[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 543             continue;
 544         if (pe_sec[i].PointerToRawData < lowest_fa)
 545             lowest_fa = pe_sec[i].PointerToRawData;
 546         if (pe_sec[i].PointerToRawData+pe_sec[i].SizeOfRawData > rawsize)
 547             rawsize = pe_sec[i].PointerToRawData+pe_sec[i].SizeOfRawData;
 548     }
 549
 550     /* Check file size */
 551     if ( file_size && file_size < rawsize )
 552     {
 553         ERR( win32, "PE module is too small (header: %d, filesize: %d), "
 554                     "probably truncated download?\n",
 555                     rawsize, file_size );
 556         goto error;
 557     }
 558
 559     /* Check entrypoint address */
 560     aoep = nt->OptionalHeader.AddressOfEntryPoint;
 561     if (aoep && (aoep < lowest_va))
 562         FIXME( win32, "WARNING: '%s' has an invalid entrypoint (0x%08lx) "
 563                       "below the first virtual address (0x%08x) "
 564                       "(possible Virus Infection or broken binary)!\n",
 565                        ofs->szPathName, aoep, lowest_va );
 566
 567
 568     /* Allocate memory for module */
 569     load_addr = nt->OptionalHeader.ImageBase;
 570     vma_size = calc_vma_size( hModule );
 571
 572     load_addr = (DWORD)VirtualAlloc( (void*)load_addr, vma_size,
 573                                      MEM_RESERVE | MEM_COMMIT,
 574                                      PAGE_EXECUTE_READWRITE );
 575     if (load_addr == 0)
 576     {
 577         /* We need to perform base relocations */
 578         dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_BASERELOC;
 579         if (dir->Size)
 580             reloc = dir->VirtualAddress;
 581         else
 582         {
 583             FIXME( win32,
 584                    "Need to relocate %s, but no relocation records present (%s).\n",
 585                    ofs->szPathName,
 586                    (nt->FileHeader.Characteristics&IMAGE_FILE_RELOCS_STRIPPED)?
 587                    "stripped during link" : "unknown reason" );
 588             goto error;
 589         }
 590
 591         load_addr = (DWORD)VirtualAlloc( NULL, vma_size,
 592                                          MEM_RESERVE | MEM_COMMIT,
 593                                          PAGE_EXECUTE_READWRITE );
 594     }
 595
 596     TRACE( win32, "Load addr is %lx (base %lx), range %x\n",
 597                   load_addr, nt->OptionalHeader.ImageBase, vma_size );
 598     TRACE( segment, "Loading %s at %lx, range %x\n",
 599                     ofs->szPathName, load_addr, vma_size );
 600
 601     /* Store the NT header at the load addr */
 602     *(PIMAGE_DOS_HEADER)load_addr = *(PIMAGE_DOS_HEADER)hModule;
 603     *PE_HEADER( load_addr ) = *nt;
 604     memcpy( PE_SECTIONS(load_addr), PE_SECTIONS(hModule),
 605             sizeof(IMAGE_SECTION_HEADER) * nt->FileHeader.NumberOfSections );
 606 #if 0
 607     /* Copies all stuff up to the first section. Including win32 viruses. */
 608     memcpy( load_addr, hModule, lowest_fa );
 609 #endif
 610
 611     /* Copy sections into module image */
 612     pe_sec = PE_SECTIONS( hModule );
 613     for (i = 0; i < nt->FileHeader.NumberOfSections; i++, pe_sec++)
 614     {
 615         /* memcpy only non-BSS segments */
 616         /* FIXME: this should be done by mmap(..MAP_PRIVATE|MAP_FIXED..)
 617          * but it is not possible for (at least) Linux needs
 618          * a page-aligned offset.
 619          */
 620         if(!(pe_sec->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA))
 621             memcpy((char*)RVA(pe_sec->VirtualAddress),
 622                    (char*)(hModule + pe_sec->PointerToRawData),
 623                    pe_sec->SizeOfRawData);
 624 #if 0
 625         /* not needed, memory is zero */
 626         if(strcmp(pe_sec->Name, ".bss") == 0)
 627             memset((void *)RVA(pe_sec->VirtualAddress), 0,
 628                    pe_sec->Misc.VirtualSize ?
 629                    pe_sec->Misc.VirtualSize :
 630                    pe_sec->SizeOfRawData);
 631 #endif
 632     }
 633
 634     /* Perform base relocation, if necessary */
 635     if ( reloc )
 636         do_relocations( load_addr, (IMAGE_BASE_RELOCATION *)RVA(reloc) );
 637
 638     /* Get module name */
 639     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXPORT;
 640     if (dir->Size)
 641         *modName = (LPCSTR)RVA(((PIMAGE_EXPORT_DIRECTORY)RVA(dir->VirtualAddress))->Name);
 642
 643     /* We don't need the orignal mapping any more */
 644     UnmapViewOfFile( (LPVOID)hModule );
 645     return (HMODULE32)load_addr;
 646
 647 error:
 648     UnmapViewOfFile( (LPVOID)hModule );
 649     return 0;
 650 }
 651
 652 /**********************************************************************
 653  *                 PE_CreateModule
 654  *
 655  * Create WINE_MODREF structure for loaded HMODULE32, link it into
 656  * process modref_list, and fixup all imports.
 657  *
 658  * Note: hModule must point to a correctly allocated PE image,
 659  *       with base relocations applied; the 16-bit dummy module
 660  *       associated to hModule must already exist.
 661  */
 662 static WINE_MODREF *PE_CreateModule( PDB32 *process, HMODULE32 hModule,
 663                                      OFSTRUCT *ofs, DWORD flags, BOOL32 builtin )
 664 {
 665     DWORD load_addr = (DWORD)hModule;  /* for RVA */
 666     IMAGE_NT_HEADERS *nt = PE_HEADER(hModule);
 667     IMAGE_DATA_DIRECTORY *dir;
 668     IMAGE_IMPORT_DESCRIPTOR *pe_import = NULL;
 669     IMAGE_EXPORT_DIRECTORY *pe_export = NULL;
 670     IMAGE_RESOURCE_DIRECTORY *pe_resource = NULL;
 671     WINE_MODREF *wm;
 672     int result;
 673     char *modname;
 674
 675
 676     /* Retrieve DataDirectory entries */
 677
 678     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXPORT;
 679     if (dir->Size)
 680         pe_export = (PIMAGE_EXPORT_DIRECTORY)RVA(dir->VirtualAddress);
 681
 682     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_IMPORT;
 683     if (dir->Size)
 684         pe_import = (PIMAGE_IMPORT_DESCRIPTOR)RVA(dir->VirtualAddress);
 685
 686     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_RESOURCE;
 687     if (dir->Size)
 688         pe_resource = (PIMAGE_RESOURCE_DIRECTORY)RVA(dir->VirtualAddress);
 689
 690     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXCEPTION;
 691     if (dir->Size) FIXME( win32, "Exception directory ignored\n" );
 692
 693     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_SECURITY;
 694     if (dir->Size) FIXME( win32, "Security directory ignored\n" );
 695
 696     /* IMAGE_DIRECTORY_ENTRY_BASERELOC handled in PE_LoadImage */
 697     /* IMAGE_DIRECTORY_ENTRY_DEBUG handled by debugger */
 698
 699     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_DEBUG;
 700     if (dir->Size) TRACE( win32, "Debug directory ignored\n" );
 701
 702     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_COPYRIGHT;
 703     if (dir->Size) FIXME( win32, "Copyright string ignored\n" );
 704
 705     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_GLOBALPTR;
 706     if (dir->Size) FIXME( win32, "Global Pointer (MIPS) ignored\n" );
 707
 708     /* IMAGE_DIRECTORY_ENTRY_TLS handled in PE_TlsInit */
 709
 710     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG;
 711     if (dir->Size) FIXME (win32, "Load Configuration directory ignored\n" );
 712
 713     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT;
 714     if (dir->Size) TRACE( win32, "Bound Import directory ignored\n" );
 715
 716     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_IAT;
 717     if (dir->Size) TRACE( win32, "Import Address Table directory ignored\n" );
 718
 719     dir = nt->OptionalHeader.DataDirectory+13;
 720     if (dir->Size) FIXME( win32, "Unknown directory 13 ignored\n" );
 721
 722     dir = nt->OptionalHeader.DataDirectory+14;
 723     if (dir->Size) FIXME( win32, "Unknown directory 14 ignored\n" );
 724
 725     dir = nt->OptionalHeader.DataDirectory+15;
 726     if (dir->Size) FIXME( win32, "Unknown directory 15 ignored\n" );
 727
 728
 729     /* Allocate and fill WINE_MODREF */
 730
 731     wm = (WINE_MODREF *)HeapAlloc( process->heap, HEAP_ZERO_MEMORY, sizeof(*wm) );
 732     wm->module = hModule;
 733
 734     wm->type = MODULE32_PE;
 735     wm->binfmt.pe.flags = builtin? PE_MODREF_INTERNAL : 0;
 736     wm->binfmt.pe.pe_export = pe_export;
 737     wm->binfmt.pe.pe_import = pe_import;
 738     wm->binfmt.pe.pe_resource = pe_resource;
 739
 740     if ( pe_export )
 741         modname = (char *)RVA( pe_export->Name );
 742     else
 743     {
 744         /* try to find out the name from the OFSTRUCT */
 745         char *s;
 746         modname = ofs->szPathName;
 747         while ((s=strchr(modname,'\\')))
 748             modname = s+1;
 749     }
 750     wm->modname = HEAP_strdupA( process->heap, 0, modname );
 751
 752     result = GetLongPathName32A( ofs->szPathName, NULL, 0 );
 753     wm->longname = (char *)HeapAlloc( process->heap, 0, result+1 );
 754     GetLongPathName32A( ofs->szPathName, wm->longname, result+1 );
 755
 756     wm->shortname = HEAP_strdupA( process->heap, 0, ofs->szPathName );
 757
 758     /* Link MODREF into process list */
 759
 760     wm->next = process->modref_list;
 761     process->modref_list = wm;
 762
 763     if ( !(nt->FileHeader.Characteristics & IMAGE_FILE_DLL) )
 764     {
 765         if ( process->exe_modref )
 766             FIXME( win32, "overwriting old exe_modref... arrgh\n" );
 767         process->exe_modref = wm;
 768     }
 769
 770     /* Dump Exports */
 771
 772     if ( pe_export )
 773         dump_exports( hModule );
 774
 775     /* Fixup Imports */
 776
 777     if ( pe_import && fixup_imports( process, wm ) )
 778     {
 779         /* remove entry from modref chain */
 780         WINE_MODREF **xwm;
 781         for ( xwm = &process->modref_list; *xwm; xwm = &(*xwm)->next )
 782             if ( *xwm == wm )
 783             {
 784                 *xwm = wm->next;
 785                 break;
 786             }
 787         /* FIXME: there are several more dangling references
 788          * left. Including dlls loaded by this dll before the
 789          * failed one. Unrolling is rather difficult with the
 790          * current structure and we can leave it them lying
 791          * around with no problems, so we don't care.
 792          * As these might reference our wm, we don't free it.
 793          */
 794          return NULL;
 795     }
 796
 797     return wm;
 798 }
 799
 800 /******************************************************************************
 801  * The PE Library Loader frontend.
 802  * FIXME: handle the flags.
 803  */
 804 HMODULE32 PE_LoadLibraryEx32A (LPCSTR name, PDB32 *process,
 805                                HFILE32 hFile, DWORD flags)
 806 {
 807     LPCSTR      modName = NULL;
 808     OFSTRUCT    ofs;
 809     HMODULE32   hModule32;
 810     HMODULE16   hModule16;
 811     NE_MODULE   *pModule;
 812     WINE_MODREF *wm;
 813     BOOL32      builtin;
 814
 815     /* Check for already loaded module */
 816     if ((hModule32 = MODULE_FindModule32( process, name )))
 817         return hModule32;
 818
 819     /* try to load builtin, enabled modules first */
 820     if ((hModule32 = BUILTIN32_LoadImage( name, &ofs, FALSE )))
 821         builtin = TRUE;
 822     /* try to load the specified dll/exe */
 823     else if ((hModule32 = PE_LoadImage( name, &ofs, &modName )) >= 32)
 824         builtin = FALSE;
 825     /* Now try the built-in even if disabled */
 826     else if ((hModule32 = BUILTIN32_LoadImage( name, &ofs, TRUE )))
 827     {
 828         WARN( module, "Could not load external DLL '%s', using built-in module.\n", name );
 829         builtin = TRUE;
 830     }
 831     else
 832         return 0;
 833
 834     /* Create 16-bit dummy module */
 835     if ((hModule16 = MODULE_CreateDummyModule( &ofs, modName )) < 32) return hModule16;
 836     pModule = (NE_MODULE *)GlobalLock16( hModule16 );
 837     pModule->flags    = NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA |
 838                         NE_FFLAGS_WIN32 | (builtin? NE_FFLAGS_BUILTIN : 0);
 839     pModule->module32 = hModule32;
 840
 841     /* Create 32-bit MODREF */
 842     if ( !(wm = PE_CreateModule( process, hModule32, &ofs, flags, builtin )) )
 843     {
 844         ERR(win32,"can't load %s\n",ofs.szPathName);
 845         FreeLibrary16( hModule16 );
 846         return 0;
 847     }
 848
 849     if (wm->binfmt.pe.pe_export)
 850         SNOOP_RegisterDLL(wm->module,wm->modname,wm->binfmt.pe.pe_export->NumberOfFunctions);
 851
 852     return wm->module;
 853 }
 854
 855 /*****************************************************************************
 856  * Load the PE main .EXE. All other loading is done by PE_LoadLibraryEx32A
 857  * FIXME: this function should use PE_LoadLibraryEx32A, but currently can't
 858  * due to the PROCESS_Create stuff.
 859  */
 860 HINSTANCE16 PE_CreateProcess( LPCSTR name, LPCSTR cmd_line,
 861                               LPCSTR env, BOOL32 inherit, LPSTARTUPINFO32A startup,
 862                               LPPROCESS_INFORMATION info )
 863 {
 864     LPCSTR modName = NULL;
 865     HMODULE16 hModule16;
 866     HMODULE32 hModule32;
 867     HINSTANCE16 hInstance;
 868     NE_MODULE *pModule;
 869     OFSTRUCT ofs;
 870     PDB32 *process;
 871     TDB *pTask;
 872     WINE_MODREF *wm;
 873
 874     /* Load file */
 875     if ((hModule32 = PE_LoadImage( name, &ofs, &modName )) < 32)
 876         return hModule32;
 877     if (PE_HEADER(hModule32)->FileHeader.Characteristics & IMAGE_FILE_DLL)
 878         return 20;  /* FIXME: not the right error code */
 879
 880     /* Create 16-bit dummy module */
 881     if ((hModule16 = MODULE_CreateDummyModule( &ofs, modName )) < 32) return hModule16;
 882     pModule = (NE_MODULE *)GlobalLock16( hModule16 );
 883     pModule->flags    = NE_FFLAGS_WIN32;
 884     pModule->module32 = hModule32;
 885
 886     /* Create new process */
 887     hInstance = NE_CreateInstance( pModule, NULL, FALSE );
 888     process = PROCESS_Create( pModule, cmd_line, env,
 889                               hInstance, 0, inherit, startup, info );
 890
 891     /* Create 32-bit MODREF */
 892     if ( !(wm = PE_CreateModule( process, hModule32, &ofs, 0, FALSE )) )
 893     {
 894         /* FIXME: should destroy the task created and free referenced stuff */
 895         return 0;
 896     }
 897
 898     /* FIXME: Yuck. Is there no other good place to do that? */
 899     pTask = (TDB *)GlobalLock16( process->task );
 900     PE_InitTls( pTask->thdb );
 901
 902     return hInstance;
 903 }
 904
 905 /*********************************************************************
 906  * PE_UnloadImage [internal]
 907  */
 908 int PE_UnloadImage( HMODULE32 hModule )
 909 {
 910         FIXME(win32,"stub.\n");
 911         /* free resources, image, unmap */
 912         return 1;
 913 }
 914
 915 /* Called if the library is loaded or freed.
 916  * NOTE: if a thread attaches a DLL, the current thread will only do
 917  * DLL_PROCESS_ATTACH. Only new created threads do DLL_THREAD_ATTACH
 918  * (SDK)
 919  */
 920 void PE_InitDLL(WINE_MODREF *wm, DWORD type, LPVOID lpReserved)
 921 {
 922     if (wm->type!=MODULE32_PE)
 923         return;
 924     if (wm->binfmt.pe.flags & PE_MODREF_NO_DLL_CALLS)
 925         return;
 926     if (type==DLL_PROCESS_ATTACH)
 927     {
 928         if (wm->binfmt.pe.flags & PE_MODREF_PROCESS_ATTACHED)
 929             return;
 930
 931         wm->binfmt.pe.flags |= PE_MODREF_PROCESS_ATTACHED;
 932     }
 933
 934     /*  DLL_ATTACH_PROCESS:
 935      *          lpreserved is NULL for dynamic loads, not-NULL for static loads
 936      *  DLL_DETACH_PROCESS:
 937      *          lpreserved is NULL if called by FreeLibrary, not-NULL otherwise
 938      *  the SDK doesn't mention anything for DLL_THREAD_*
 939      */
 940
 941     /* Is this a library? And has it got an entrypoint? */
 942     if ((PE_HEADER(wm->module)->FileHeader.Characteristics & IMAGE_FILE_DLL) &&
 943         (PE_HEADER(wm->module)->OptionalHeader.AddressOfEntryPoint)
 944     ) {
 945         DLLENTRYPROC32 entry = (void*)RVA_PTR( wm->module,OptionalHeader.AddressOfEntryPoint );
 946         TRACE(relay, "CallTo32(entryproc=%p,module=%08x,type=%ld,res=%p)\n",
 947                        entry, wm->module, type, lpReserved );
 948
 949         entry( wm->module, type, lpReserved );
 950     }
 951 }
 952
 953 /************************************************************************
 954  *      PE_InitTls                      (internal)
 955  *
 956  * If included, initialises the thread local storages of modules.
 957  * Pointers in those structs are not RVAs but real pointers which have been
 958  * relocated by do_relocations() already.
 959  */
 960 void PE_InitTls(THDB *thdb)
 961 {
 962         WINE_MODREF             *wm;
 963         PE_MODREF               *pem;
 964         IMAGE_NT_HEADERS        *peh;
 965         DWORD                   size,datasize;
 966         LPVOID                  mem;
 967         PIMAGE_TLS_DIRECTORY    pdir;
 968         PDB32                   *pdb = thdb->process;
 969         int delta;
 970
 971         for (wm = pdb->modref_list;wm;wm=wm->next) {
 972                 if (wm->type!=MODULE32_PE)
 973                         continue;
 974                 pem = &(wm->binfmt.pe);
 975                 peh = PE_HEADER(wm->module);
 976                 delta = wm->module - peh->OptionalHeader.ImageBase;
 977                 if (!peh->OptionalHeader.DataDirectory[IMAGE_FILE_THREAD_LOCAL_STORAGE].VirtualAddress)
 978                         continue;
 979                 pdir = (LPVOID)(wm->module + peh->OptionalHeader.
 980                         DataDirectory[IMAGE_FILE_THREAD_LOCAL_STORAGE].VirtualAddress);
 981
 982
 983                 if (!(pem->flags & PE_MODREF_TLS_ALLOCED)) {
 984                         pem->tlsindex = THREAD_TlsAlloc(thdb);
 985                         *pdir->AddressOfIndex=pem->tlsindex;
 986                 }
 987                 pem->flags |= PE_MODREF_TLS_ALLOCED;
 988                 datasize= pdir->EndAddressOfRawData-pdir->StartAddressOfRawData;
 989                 size    = datasize + pdir->SizeOfZeroFill;
 990                 mem=VirtualAlloc(0,size,MEM_RESERVE|MEM_COMMIT,PAGE_READWRITE);
 991                 memcpy(mem,(LPVOID)pdir->StartAddressOfRawData,datasize);
 992                 if (pdir->AddressOfCallBacks) {
 993                      PIMAGE_TLS_CALLBACK *cbs =
 994                        (PIMAGE_TLS_CALLBACK *)pdir->AddressOfCallBacks;
 995
 996                      if (*cbs)
 997                        FIXME(win32, "TLS Callbacks aren't going to be called\n");
 998                 }
 999                 /* Don't use TlsSetValue, we are in the wrong thread */
1000                 thdb->tls_array[pem->tlsindex] = mem;
1001         }
1002 }
1003
1004 /****************************************************************************
1005  *              DisableThreadLibraryCalls (KERNEL32.74)
1006  * Don't call DllEntryPoint for DLL_THREAD_{ATTACH,DETACH} if set.
1007  */
1008 BOOL32 WINAPI DisableThreadLibraryCalls(HMODULE32 hModule)
1009 {
1010         WINE_MODREF     *wm;
1011
1012         for (wm=PROCESS_Current()->modref_list;wm;wm=wm->next)
1013                 if ((wm->module == hModule) && (wm->type==MODULE32_PE))
1014                         wm->binfmt.pe.flags|=PE_MODREF_NO_DLL_CALLS;
1015         return TRUE;
1016 }