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 )
 460 {
 461     HMODULE32   hModule;
 462     HFILE32     hFile;
 463     HANDLE32    mapping;
 464
 465     IMAGE_NT_HEADERS *nt;
 466     IMAGE_SECTION_HEADER *pe_sec;
 467     BY_HANDLE_FILE_INFORMATION bhfi;
 468     int i, rawsize, lowest_va, lowest_fa, vma_size, file_size = 0;
 469     DWORD load_addr, aoep, reloc = 0;
 470     char dllname[256], *p;
 471
 472     /* Append .DLL to name if no extension present */
 473     strcpy( dllname, name );
 474     if ((p = strrchr( dllname, '\\' ))) p++; else p = dllname;
 475     if (!strchr( p, '.' )) strcat( dllname, ".DLL" );
 476
 477     /* Open PE file */
 478     hFile = OpenFile32( dllname, ofs, OF_READ );
 479     if ( hFile == HFILE_ERROR32 )
 480     {
 481         WARN( win32, "OpenFile error %ld\n", GetLastError() );
 482         return 2;
 483     }
 484
 485     /* Retrieve file size */
 486     if ( GetFileInformationByHandle( hFile, &bhfi ) )
 487         file_size = bhfi.nFileSizeLow; /* FIXME: 64 bit */
 488
 489     /* Map the PE file somewhere */
 490     mapping = CreateFileMapping32A( hFile, NULL, PAGE_READONLY | SEC_COMMIT,
 491                                     0, 0, NULL );
 492     CloseHandle( hFile );
 493     if (!mapping)
 494     {
 495         WARN( win32, "CreateFileMapping error %ld\n", GetLastError() );
 496         return 0;
 497     }
 498     hModule = (HMODULE32)MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
 499     CloseHandle( mapping );
 500     if (!hModule)
 501     {
 502         WARN( win32, "MapViewOfFile error %ld\n", GetLastError() );
 503         return 0;
 504     }
 505     nt = PE_HEADER( hModule );
 506
 507     /* Check signature */
 508     if ( nt->Signature != IMAGE_NT_SIGNATURE )
 509     {
 510         WARN(win32, "image doesn't have PE signature, but 0x%08lx\n",
 511                     nt->Signature );
 512         goto error;
 513     }
 514
 515     /* Check architecture */
 516     if ( nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386 )
 517     {
 518         MSG("Trying to load PE image for unsupported architecture (");
 519         switch (nt->FileHeader.Machine)
 520         {
 521         case IMAGE_FILE_MACHINE_UNKNOWN: MSG("Unknown"); break;
 522         case IMAGE_FILE_MACHINE_I860:    MSG("I860"); break;
 523         case IMAGE_FILE_MACHINE_R3000:   MSG("R3000"); break;
 524         case IMAGE_FILE_MACHINE_R4000:   MSG("R4000"); break;
 525         case IMAGE_FILE_MACHINE_R10000:  MSG("R10000"); break;
 526         case IMAGE_FILE_MACHINE_ALPHA:   MSG("Alpha"); break;
 527         case IMAGE_FILE_MACHINE_POWERPC: MSG("PowerPC"); break;
 528         default: MSG("Unknown-%04x", nt->FileHeader.Machine); break;
 529         }
 530         MSG(")\n");
 531         goto error;
 532     }
 533
 534     /* Find out how large this executeable should be */
 535     pe_sec = PE_SECTIONS( hModule );
 536     rawsize = 0; lowest_va = 0x10000; lowest_fa = 0x10000;
 537     for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
 538     {
 539         if (lowest_va > pe_sec[i].VirtualAddress)
 540            lowest_va = pe_sec[i].VirtualAddress;
 541         if (pe_sec[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 542             continue;
 543         if (pe_sec[i].PointerToRawData < lowest_fa)
 544             lowest_fa = pe_sec[i].PointerToRawData;
 545         if (pe_sec[i].PointerToRawData+pe_sec[i].SizeOfRawData > rawsize)
 546             rawsize = pe_sec[i].PointerToRawData+pe_sec[i].SizeOfRawData;
 547     }
 548
 549     /* Check file size */
 550     if ( file_size && file_size < rawsize )
 551     {
 552         ERR( win32, "PE module is too small (header: %d, filesize: %d), "
 553                     "probably truncated download?\n",
 554                     rawsize, file_size );
 555         goto error;
 556     }
 557
 558     /* Check entrypoint address */
 559     aoep = nt->OptionalHeader.AddressOfEntryPoint;
 560     if (aoep && (aoep < lowest_va))
 561         FIXME( win32, "WARNING: '%s' has an invalid entrypoint (0x%08lx) "
 562                       "below the first virtual address (0x%08x) "
 563                       "(possible Virus Infection or broken binary)!\n",
 564                        ofs->szPathName, aoep, lowest_va );
 565
 566
 567     /* Allocate memory for module */
 568     load_addr = nt->OptionalHeader.ImageBase;
 569     vma_size = calc_vma_size( hModule );
 570
 571     load_addr = (DWORD)VirtualAlloc( (void*)load_addr, vma_size,
 572                                      MEM_RESERVE | MEM_COMMIT,
 573                                      PAGE_EXECUTE_READWRITE );
 574     if (load_addr == 0)
 575     {
 576         /* We need to perform base relocations */
 577         IMAGE_DATA_DIRECTORY *dir;
 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     /* We don't need the orignal mapping any more */
 639     UnmapViewOfFile( (LPVOID)hModule );
 640     return (HMODULE32)load_addr;
 641
 642 error:
 643     UnmapViewOfFile( (LPVOID)hModule );
 644     return 0;
 645 }
 646
 647 /**********************************************************************
 648  *                 PE_CreateModule
 649  *
 650  * Create WINE_MODREF structure for loaded HMODULE32, link it into
 651  * process modref_list, and fixup all imports.
 652  *
 653  * Note: hModule must point to a correctly allocated PE image,
 654  *       with base relocations applied; the 16-bit dummy module
 655  *       associated to hModule must already exist.
 656  */
 657 static WINE_MODREF *PE_CreateModule( PDB32 *process, HMODULE32 hModule,
 658                                      OFSTRUCT *ofs, DWORD flags, BOOL32 builtin )
 659 {
 660     DWORD load_addr = (DWORD)hModule;  /* for RVA */
 661     IMAGE_NT_HEADERS *nt = PE_HEADER(hModule);
 662     IMAGE_DATA_DIRECTORY *dir;
 663     IMAGE_IMPORT_DESCRIPTOR *pe_import = NULL;
 664     IMAGE_EXPORT_DIRECTORY *pe_export = NULL;
 665     IMAGE_RESOURCE_DIRECTORY *pe_resource = NULL;
 666     WINE_MODREF *wm;
 667     int result;
 668     char *modname;
 669
 670
 671     /* Retrieve DataDirectory entries */
 672
 673     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXPORT;
 674     if (dir->Size)
 675         pe_export = (PIMAGE_EXPORT_DIRECTORY)RVA(dir->VirtualAddress);
 676
 677     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_IMPORT;
 678     if (dir->Size)
 679         pe_import = (PIMAGE_IMPORT_DESCRIPTOR)RVA(dir->VirtualAddress);
 680
 681     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_RESOURCE;
 682     if (dir->Size)
 683         pe_resource = (PIMAGE_RESOURCE_DIRECTORY)RVA(dir->VirtualAddress);
 684
 685     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXCEPTION;
 686     if (dir->Size) FIXME( win32, "Exception directory ignored\n" );
 687
 688     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_SECURITY;
 689     if (dir->Size) FIXME( win32, "Security directory ignored\n" );
 690
 691     /* IMAGE_DIRECTORY_ENTRY_BASERELOC handled in PE_LoadImage */
 692     /* IMAGE_DIRECTORY_ENTRY_DEBUG handled by debugger */
 693
 694     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_DEBUG;
 695     if (dir->Size) TRACE( win32, "Debug directory ignored\n" );
 696
 697     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_COPYRIGHT;
 698     if (dir->Size) FIXME( win32, "Copyright string ignored\n" );
 699
 700     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_GLOBALPTR;
 701     if (dir->Size) FIXME( win32, "Global Pointer (MIPS) ignored\n" );
 702
 703     /* IMAGE_DIRECTORY_ENTRY_TLS handled in PE_TlsInit */
 704
 705     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG;
 706     if (dir->Size) FIXME (win32, "Load Configuration directory ignored\n" );
 707
 708     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT;
 709     if (dir->Size) TRACE( win32, "Bound Import directory ignored\n" );
 710
 711     dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_IAT;
 712     if (dir->Size) TRACE( win32, "Import Address Table directory ignored\n" );
 713
 714     dir = nt->OptionalHeader.DataDirectory+13;
 715     if (dir->Size) FIXME( win32, "Unknown directory 13 ignored\n" );
 716
 717     dir = nt->OptionalHeader.DataDirectory+14;
 718     if (dir->Size) FIXME( win32, "Unknown directory 14 ignored\n" );
 719
 720     dir = nt->OptionalHeader.DataDirectory+15;
 721     if (dir->Size) FIXME( win32, "Unknown directory 15 ignored\n" );
 722
 723
 724     /* Allocate and fill WINE_MODREF */
 725
 726     wm = (WINE_MODREF *)HeapAlloc( process->heap, HEAP_ZERO_MEMORY, sizeof(*wm) );
 727     wm->module = hModule;
 728
 729     wm->type = MODULE32_PE;
 730     wm->binfmt.pe.flags = builtin? PE_MODREF_INTERNAL : 0;
 731     wm->binfmt.pe.pe_export = pe_export;
 732     wm->binfmt.pe.pe_import = pe_import;
 733     wm->binfmt.pe.pe_resource = pe_resource;
 734
 735     if ( pe_export )
 736         modname = (char *)RVA( pe_export->Name );
 737     else
 738     {
 739         /* try to find out the name from the OFSTRUCT */
 740         char *s;
 741         modname = ofs->szPathName;
 742         while ((s=strchr(modname,'\\')))
 743             modname = s+1;
 744     }
 745     wm->modname = HEAP_strdupA( process->heap, 0, modname );
 746
 747     result = GetLongPathName32A( ofs->szPathName, NULL, 0 );
 748     wm->longname = (char *)HeapAlloc( process->heap, 0, result+1 );
 749     GetLongPathName32A( ofs->szPathName, wm->longname, result+1 );
 750
 751     wm->shortname = HEAP_strdupA( process->heap, 0, ofs->szPathName );
 752
 753     /* Link MODREF into process list */
 754
 755     wm->next = process->modref_list;
 756     process->modref_list = wm;
 757
 758     if ( !(nt->FileHeader.Characteristics & IMAGE_FILE_DLL) )
 759     {
 760         if ( process->exe_modref )
 761             FIXME( win32, "overwriting old exe_modref... arrgh\n" );
 762         process->exe_modref = wm;
 763     }
 764
 765     /* Dump Exports */
 766
 767     if ( pe_export )
 768         dump_exports( hModule );
 769
 770     /* Fixup Imports */
 771
 772     if ( pe_import && fixup_imports( process, wm ) )
 773     {
 774         /* remove entry from modref chain */
 775         WINE_MODREF **xwm;
 776         for ( xwm = &process->modref_list; *xwm; xwm = &(*xwm)->next )
 777             if ( *xwm == wm )
 778             {
 779                 *xwm = wm->next;
 780                 break;
 781             }
 782         /* FIXME: there are several more dangling references
 783          * left. Including dlls loaded by this dll before the
 784          * failed one. Unrolling is rather difficult with the
 785          * current structure and we can leave it them lying
 786          * around with no problems, so we don't care.
 787          * As these might reference our wm, we don't free it.
 788          */
 789          return NULL;
 790     }
 791
 792     return wm;
 793 }
 794
 795 /******************************************************************************
 796  * The PE Library Loader frontend.
 797  * FIXME: handle the flags.
 798  */
 799 HMODULE32 PE_LoadLibraryEx32A (LPCSTR name, PDB32 *process,
 800                                HFILE32 hFile, DWORD flags)
 801 {
 802     OFSTRUCT    ofs;
 803     HMODULE32   hModule32;
 804     HMODULE16   hModule16;
 805     NE_MODULE   *pModule;
 806     WINE_MODREF *wm;
 807     BOOL32      builtin;
 808
 809     /* Check for already loaded module */
 810     if ((hModule32 = MODULE_FindModule32( process, name )))
 811         return hModule32;
 812
 813     /* try to load builtin, enabled modules first */
 814     if ((hModule32 = BUILTIN32_LoadImage( name, &ofs, FALSE )))
 815         builtin = TRUE;
 816     /* try to load the specified dll/exe */
 817     else if ((hModule32 = PE_LoadImage( name, &ofs )) >= 32)
 818         builtin = FALSE;
 819     /* Now try the built-in even if disabled */
 820     else if ((hModule32 = BUILTIN32_LoadImage( name, &ofs, TRUE )))
 821     {
 822         WARN( module, "Could not load external DLL '%s', using built-in module.\n", name );
 823         builtin = TRUE;
 824     }
 825     else
 826         return 0;
 827
 828     /* Create 16-bit dummy module */
 829     if ((hModule16 = MODULE_CreateDummyModule( &ofs )) < 32) return hModule16;
 830     pModule = (NE_MODULE *)GlobalLock16( hModule16 );
 831     pModule->flags    = NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA |
 832                         NE_FFLAGS_WIN32 | (builtin? NE_FFLAGS_BUILTIN : 0);
 833     pModule->module32 = hModule32;
 834
 835     /* Create 32-bit MODREF */
 836     if ( !(wm = PE_CreateModule( process, hModule32, &ofs, flags, builtin )) )
 837     {
 838         ERR(win32,"can't load %s\n",ofs.szPathName);
 839         FreeLibrary16( hModule16 );
 840         return 0;
 841     }
 842
 843     if (wm->binfmt.pe.pe_export)
 844         SNOOP_RegisterDLL(wm->module,wm->modname,wm->binfmt.pe.pe_export->NumberOfFunctions);
 845
 846     return wm->module;
 847 }
 848
 849 /*****************************************************************************
 850  * Load the PE main .EXE. All other loading is done by PE_LoadLibraryEx32A
 851  * FIXME: this function should use PE_LoadLibraryEx32A, but currently can't
 852  * due to the PROCESS_Create stuff.
 853  */
 854 HINSTANCE16 PE_CreateProcess( LPCSTR name, LPCSTR cmd_line,
 855                               LPCSTR env, LPSTARTUPINFO32A startup,
 856                               LPPROCESS_INFORMATION info )
 857 {
 858     HMODULE16 hModule16;
 859     HMODULE32 hModule32;
 860     HINSTANCE16 hInstance;
 861     NE_MODULE *pModule;
 862     OFSTRUCT ofs;
 863     PDB32 *process;
 864     TDB *pTask;
 865     WINE_MODREF *wm;
 866
 867     /* Load file */
 868     if ((hModule32 = PE_LoadImage( name, &ofs )) < 32)
 869         return hModule32;
 870     if (PE_HEADER(hModule32)->FileHeader.Characteristics & IMAGE_FILE_DLL)
 871         return 11;
 872
 873     /* Create 16-bit dummy module */
 874     if ((hModule16 = MODULE_CreateDummyModule( &ofs )) < 32) return hModule16;
 875     pModule = (NE_MODULE *)GlobalLock16( hModule16 );
 876     pModule->flags    = NE_FFLAGS_WIN32;
 877     pModule->module32 = hModule32;
 878
 879     /* Create new process */
 880     hInstance = NE_CreateInstance( pModule, NULL, FALSE );
 881     process = PROCESS_Create( pModule, cmd_line, env,
 882                               hInstance, 0, startup, info );
 883
 884     /* Create 32-bit MODREF */
 885     if ( !(wm = PE_CreateModule( process, hModule32, &ofs, 0, FALSE )) )
 886     {
 887         /* FIXME: should destroy the task created and free referenced stuff */
 888         return 0;
 889     }
 890
 891     /* FIXME: Yuck. Is there no other good place to do that? */
 892     pTask = (TDB *)GlobalLock16( process->task );
 893     PE_InitTls( pTask->thdb );
 894
 895     return hInstance;
 896 }
 897
 898 /*********************************************************************
 899  * PE_UnloadImage [internal]
 900  */
 901 int PE_UnloadImage( HMODULE32 hModule )
 902 {
 903         FIXME(win32,"stub.\n");
 904         /* free resources, image, unmap */
 905         return 1;
 906 }
 907
 908 /* Called if the library is loaded or freed.
 909  * NOTE: if a thread attaches a DLL, the current thread will only do
 910  * DLL_PROCESS_ATTACH. Only new created threads do DLL_THREAD_ATTACH
 911  * (SDK)
 912  */
 913 void PE_InitDLL(WINE_MODREF *wm, DWORD type, LPVOID lpReserved)
 914 {
 915     if (wm->type!=MODULE32_PE)
 916         return;
 917     if (wm->binfmt.pe.flags & PE_MODREF_NO_DLL_CALLS)
 918         return;
 919     if (type==DLL_PROCESS_ATTACH)
 920     {
 921         if (wm->binfmt.pe.flags & PE_MODREF_PROCESS_ATTACHED)
 922             return;
 923
 924         wm->binfmt.pe.flags |= PE_MODREF_PROCESS_ATTACHED;
 925     }
 926
 927     /*  DLL_ATTACH_PROCESS:
 928      *          lpreserved is NULL for dynamic loads, not-NULL for static loads
 929      *  DLL_DETACH_PROCESS:
 930      *          lpreserved is NULL if called by FreeLibrary, not-NULL otherwise
 931      *  the SDK doesn't mention anything for DLL_THREAD_*
 932      */
 933
 934     /* Is this a library? And has it got an entrypoint? */
 935     if ((PE_HEADER(wm->module)->FileHeader.Characteristics & IMAGE_FILE_DLL) &&
 936         (PE_HEADER(wm->module)->OptionalHeader.AddressOfEntryPoint)
 937     ) {
 938         DLLENTRYPROC32 entry = (void*)RVA_PTR( wm->module,OptionalHeader.AddressOfEntryPoint );
 939         TRACE(relay, "CallTo32(entryproc=%p,module=%08x,type=%ld,res=%p)\n",
 940                        entry, wm->module, type, lpReserved );
 941
 942         entry( wm->module, type, lpReserved );
 943     }
 944 }
 945
 946 /************************************************************************
 947  *      PE_InitTls                      (internal)
 948  *
 949  * If included, initialises the thread local storages of modules.
 950  * Pointers in those structs are not RVAs but real pointers which have been
 951  * relocated by do_relocations() already.
 952  */
 953 void PE_InitTls(THDB *thdb)
 954 {
 955         WINE_MODREF             *wm;
 956         PE_MODREF               *pem;
 957         IMAGE_NT_HEADERS        *peh;
 958         DWORD                   size,datasize;
 959         LPVOID                  mem;
 960         PIMAGE_TLS_DIRECTORY    pdir;
 961         PDB32                   *pdb = thdb->process;
 962         int delta;
 963
 964         for (wm = pdb->modref_list;wm;wm=wm->next) {
 965                 if (wm->type!=MODULE32_PE)
 966                         continue;
 967                 pem = &(wm->binfmt.pe);
 968                 peh = PE_HEADER(wm->module);
 969                 delta = wm->module - peh->OptionalHeader.ImageBase;
 970                 if (!peh->OptionalHeader.DataDirectory[IMAGE_FILE_THREAD_LOCAL_STORAGE].VirtualAddress)
 971                         continue;
 972                 FIXME(win32,"%s has TLS directory.\n",wm->longname);
 973                 pdir = (LPVOID)(wm->module + peh->OptionalHeader.
 974                         DataDirectory[IMAGE_FILE_THREAD_LOCAL_STORAGE].VirtualAddress);
 975
 976
 977                 if (!(pem->flags & PE_MODREF_TLS_ALLOCED)) {
 978                         pem->tlsindex = THREAD_TlsAlloc(thdb);
 979                         *pdir->AddressOfIndex=pem->tlsindex;
 980                 }
 981                 pem->flags |= PE_MODREF_TLS_ALLOCED;
 982                 datasize= pdir->EndAddressOfRawData-pdir->StartAddressOfRawData;
 983                 size    = datasize + pdir->SizeOfZeroFill;
 984                 mem=VirtualAlloc(0,size,MEM_RESERVE|MEM_COMMIT,PAGE_READWRITE);
 985                 memcpy(mem,(LPVOID)pdir->StartAddressOfRawData,datasize);
 986                 if (pdir->AddressOfCallBacks) {
 987                      PIMAGE_TLS_CALLBACK *cbs =
 988                        (PIMAGE_TLS_CALLBACK *)pdir->AddressOfCallBacks;
 989
 990                      if (*cbs)
 991                        FIXME(win32, "TLS Callbacks aren't going to be called\n");
 992                 }
 993                 /* Don't use TlsSetValue, we are in the wrong thread */
 994                 thdb->tls_array[pem->tlsindex] = mem;
 995         }
 996 }
 997
 998 /****************************************************************************
 999  *              DisableThreadLibraryCalls (KERNEL32.74)
1000  * Don't call DllEntryPoint for DLL_THREAD_{ATTACH,DETACH} if set.
1001  */
1002 BOOL32 WINAPI DisableThreadLibraryCalls(HMODULE32 hModule)
1003 {
1004         WINE_MODREF     *wm;
1005
1006         for (wm=PROCESS_Current()->modref_list;wm;wm=wm->next)
1007                 if ((wm->module == hModule) && (wm->type==MODULE32_PE))
1008                         wm->binfmt.pe.flags|=PE_MODREF_NO_DLL_CALLS;
1009         return TRUE;
1010 }