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 <stdio.h>
  42 #include <stdlib.h>
  43 #include <string.h>
  44 #include <unistd.h>
  45 #include <sys/types.h>
  46 #include <sys/stat.h>
  47 #include <sys/mman.h>
  48 #include "windows.h"
  49 #include "winbase.h"
  50 #include "callback.h"
  51 #include "file.h"
  52 #include "heap.h"
  53 #include "neexe.h"
  54 #include "peexe.h"
  55 #include "process.h"
  56 #include "thread.h"
  57 #include "pe_image.h"
  58 #include "module.h"
  59 #include "global.h"
  60 #include "task.h"
  61 #include "debug.h"
  62
  63 static void PE_InitDLL(WINE_MODREF *wm, DWORD type, LPVOID lpReserved);
  64
  65 /* convert PE image VirtualAddress to Real Address */
  66 #define RVA(x) ((unsigned int)load_addr+(unsigned int)(x))
  67
  68 #define AdjustPtr(ptr,delta) ((char *)(ptr) + (delta))
  69
  70 void dump_exports( HMODULE32 hModule )
  71 {
  72   char          *Module;
  73   int           i, j;
  74   u_short       *ordinal;
  75   u_long        *function,*functions;
  76   u_char        **name;
  77   unsigned int load_addr = hModule;
  78
  79   DWORD rva_start = PE_HEADER(hModule)->OptionalHeader
  80                    .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
  81   DWORD rva_end = rva_start + PE_HEADER(hModule)->OptionalHeader
  82                    .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
  83   IMAGE_EXPORT_DIRECTORY *pe_exports = (IMAGE_EXPORT_DIRECTORY*)RVA(rva_start);
  84
  85   Module = (char*)RVA(pe_exports->Name);
  86   TRACE(win32,"*******EXPORT DATA*******\n");
  87   TRACE(win32,"Module name is %s, %ld functions, %ld names\n",
  88                Module, pe_exports->NumberOfFunctions, pe_exports->NumberOfNames);
  89
  90   ordinal=(u_short*) RVA(pe_exports->AddressOfNameOrdinals);
  91   functions=function=(u_long*) RVA(pe_exports->AddressOfFunctions);
  92   name=(u_char**) RVA(pe_exports->AddressOfNames);
  93
  94   TRACE(win32," Ord    RVA     Addr   Name\n" );
  95   for (i=0;i<pe_exports->NumberOfFunctions;i++, function++)
  96   {
  97       if (!*function) continue;  /* No such function */
  98       if (TRACE_ON(win32)){
  99         dbg_decl_str(win32, 1024);
 100
 101         dsprintf(win32,"%4ld %08lx %08x",
 102                  i + pe_exports->Base, *function, RVA(*function) );
 103         /* Check if we have a name for it */
 104         for (j = 0; j < pe_exports->NumberOfNames; j++)
 105           if (ordinal[j] == i)
 106             dsprintf(win32, "  %s", (char*)RVA(name[j]) );
 107         if ((*function >= rva_start) && (*function <= rva_end))
 108           dsprintf(win32, " (forwarded -> %s)", (char *)RVA(*function));
 109         TRACE(win32,"%s\n", dbg_str(win32));
 110       }
 111   }
 112 }
 113
 114 /* Look up the specified function or ordinal in the exportlist:
 115  * If it is a string:
 116  *      - look up the name in the Name list.
 117  *      - look up the ordinal with that index.
 118  *      - use the ordinal as offset into the functionlist
 119  * If it is a ordinal:
 120  *      - use ordinal-pe_export->Base as offset into the functionlist
 121  */
 122 FARPROC32 PE_FindExportedFunction(
 123         PDB32 *process,         /* [in] process context */
 124         WINE_MODREF *wm,        /* [in] WINE modreference */
 125         LPCSTR funcName )       /* [in] function name */
 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 (FARPROC32)RVA(addr);
 167                             forward = (char *)RVA(addr);
 168                             break;
 169                         }
 170                         ordinal++;
 171                         name++;
 172                 }
 173         } else {
 174                 if (LOWORD(funcName)-exports->Base > exports->NumberOfFunctions) {
 175                         TRACE(win32,"   ordinal %d out of range!\n",
 176                                       LOWORD(funcName));
 177                         return NULL;
 178                 }
 179                 addr = function[(int)funcName-exports->Base];
 180                 if (!addr) return NULL;
 181                 if ((addr < rva_start) || (addr >= rva_end))
 182                         return (FARPROC32)RVA(addr);
 183                 forward = (char *)RVA(addr);
 184         }
 185         if (forward)
 186         {
 187                 HMODULE32 hMod;
 188                 char module[256];
 189                 char *end = strchr(forward, '.');
 190
 191                 if (!end) return NULL;
 192                 assert(end-forward<256);
 193                 strncpy(module, forward, (end - forward));
 194                 module[end-forward] = 0;
 195                 hMod = MODULE_FindModule32(process,module);
 196                 assert(hMod);
 197                 return MODULE_GetProcAddress32( process, hMod, end + 1);
 198         }
 199         return NULL;
 200 }
 201
 202 DWORD fixup_imports (PDB32 *process,WINE_MODREF *wm)
 203 {
 204     IMAGE_IMPORT_DESCRIPTOR     *pe_imp;
 205     WINE_MODREF                 *xwm;
 206     PE_MODREF                   *pem;
 207     int fixup_failed            = 0;
 208     unsigned int load_addr      = wm->module;
 209     int                         i;
 210     char                        *modname;
 211
 212     assert(wm->type==MODULE32_PE);
 213     pem = &(wm->binfmt.pe);
 214     if (pem->pe_export)
 215         modname = (char*) RVA(pem->pe_export->Name);
 216     else
 217         modname = "<unknown>";
 218
 219     /* OK, now dump the import list */
 220     TRACE(win32, "Dumping imports list\n");
 221
 222     /* first, count the number of imported non-internal modules */
 223     pe_imp = pem->pe_import;
 224     if (!pe_imp)
 225         ERR(win32, "no import directory????\n");
 226
 227     /* FIXME: should terminate on 0 Characteristics */
 228     for (i = 0; pe_imp->Name; pe_imp++)
 229         i++;
 230
 231     /* load the imported modules. They are automatically
 232      * added to the modref list of the process.
 233      */
 234
 235     /* FIXME: should terminate on 0 Characteristics */
 236     for (i = 0, pe_imp = pem->pe_import; pe_imp->Name; pe_imp++) {
 237         HMODULE32       res;
 238         WINE_MODREF     **ywm;
 239         char            *name = (char *) RVA(pe_imp->Name);
 240
 241         /* don't use MODULE_Load, Win32 creates new task differently */
 242         res = PE_LoadLibraryEx32A( name, process, 0, 0 );
 243         if (res <= (HMODULE32) 32) {
 244             char buffer[1024];
 245
 246             /* Try with prepending the path of the current module */
 247             if (GetModuleFileName32A( wm->module, buffer, sizeof (buffer))) {
 248                 char *p;
 249
 250                 if (!(p = strrchr (buffer, '\\')))
 251                     p = buffer;
 252                 strcpy (p + 1, name);
 253                 res = PE_LoadLibraryEx32A( buffer, process, 0, 0 );
 254             } else
 255                 ERR(win32,"cannot find the module just loaded!\n");
 256         }
 257         if (res <= (HMODULE32) 32) {
 258             WARN (module, "Module %s not found\n", name);
 259             return res;
 260         }
 261         xwm = wm->next;
 262         while (xwm) {
 263                 if (xwm->module == res)
 264                         break;
 265                 xwm = xwm->next;
 266         }
 267         if (xwm) {
 268                 /* It has been loaded *BEFORE* us, so we have to initialize
 269                  * it before us. We cannot just link in the xwm before wm,
 270                  * since xwm might reference more dlls which would be in the
 271                  * wrong order after that.
 272                  * Instead we link in wm right AFTER xwm, which should keep
 273                  * the correct order. (I am not 100% sure about that.)
 274                  */
 275                 /* unlink wm from chain */
 276                 ywm = &(process->modref_list);
 277                 while (*ywm) {
 278                         if ((*ywm)==wm)
 279                                 break;
 280                         ywm = &((*ywm)->next);
 281                 }
 282                 *ywm            = wm->next;
 283
 284                 /* link wm directly AFTER xwm */
 285                 wm->next        = xwm->next;
 286                 xwm->next       = wm;
 287
 288         }
 289         i++;
 290     }
 291     pe_imp = pem->pe_import;
 292     while (pe_imp->Name) {
 293         char                    *Module;
 294         IMAGE_IMPORT_BY_NAME    *pe_name;
 295         LPIMAGE_THUNK_DATA      import_list,thunk_list;
 296         HMODULE32 hImpModule;
 297
 298         Module = (char *) RVA(pe_imp->Name);
 299         hImpModule = MODULE_FindModule32(process,Module);
 300         assert(hImpModule); /* we have imported it, so it MUST be there */
 301         TRACE(win32, "%s\n", Module);
 302
 303         /* FIXME: forwarder entries ... */
 304
 305         if (pe_imp->u.OriginalFirstThunk != 0) { /* original MS style */
 306             TRACE(win32, "Microsoft style imports used\n");
 307             import_list =(LPIMAGE_THUNK_DATA) RVA(pe_imp->u.OriginalFirstThunk);
 308             thunk_list = (LPIMAGE_THUNK_DATA) RVA(pe_imp->FirstThunk);
 309
 310             while (import_list->u1.Ordinal) {
 311                 if (IMAGE_SNAP_BY_ORDINAL(import_list->u1.Ordinal)) {
 312                     int ordinal = IMAGE_ORDINAL(import_list->u1.Ordinal);
 313
 314                     TRACE(win32, "--- Ordinal %s,%d\n", Module, ordinal);
 315                     thunk_list->u1.Function=(LPDWORD)MODULE_GetProcAddress32(
 316                         process, hImpModule, (LPCSTR)ordinal
 317                     );
 318                     if (!thunk_list->u1.Function) {
 319                         WARN(win32,"No implementation for %s.%d, setting to NULL\n",
 320                                 Module, ordinal);
 321                         /* fixup_failed=1; */
 322                     }
 323                 } else {                /* import by name */
 324                     pe_name = (LPIMAGE_IMPORT_BY_NAME)RVA(import_list->u1.AddressOfData);
 325                     TRACE(win32, "--- %s %s.%d\n", pe_name->Name, Module, pe_name->Hint);
 326                     thunk_list->u1.Function=(LPDWORD)MODULE_GetProcAddress32(
 327                         process, hImpModule, pe_name->Name
 328                     );
 329                     if (!thunk_list->u1.Function) {
 330                         WARN(win32,"No implementation for %s.%d(%s), setting to NULL\n",
 331                                 Module,pe_name->Hint,pe_name->Name);
 332                         /* fixup_failed=1; */
 333                     }
 334                 }
 335                 import_list++;
 336                 thunk_list++;
 337             }
 338         } else {        /* Borland style */
 339             TRACE(win32, "Borland style imports used\n");
 340             thunk_list = (LPIMAGE_THUNK_DATA) RVA(pe_imp->FirstThunk);
 341             while (thunk_list->u1.Ordinal) {
 342                 if (IMAGE_SNAP_BY_ORDINAL(thunk_list->u1.Ordinal)) {
 343                     /* not sure about this branch, but it seems to work */
 344                     int ordinal = IMAGE_ORDINAL(thunk_list->u1.Ordinal);
 345
 346                     TRACE(win32,"--- Ordinal %s.%d\n",Module,ordinal);
 347                     thunk_list->u1.Function=(LPDWORD)MODULE_GetProcAddress32(
 348                         process, hImpModule, (LPCSTR) ordinal
 349                     );
 350                     if (!thunk_list->u1.Function) {
 351                         WARN(win32, "No implementation for %s.%d, setting to NULL\n",
 352                                 Module,ordinal);
 353                         /* fixup_failed=1; */
 354                     }
 355                 } else {
 356                     pe_name=(LPIMAGE_IMPORT_BY_NAME) RVA(thunk_list->u1.AddressOfData);
 357                     TRACE(win32,"--- %s %s.%d\n",
 358                                   pe_name->Name,Module,pe_name->Hint);
 359                     thunk_list->u1.Function=(LPDWORD)MODULE_GetProcAddress32(
 360                         process, hImpModule, pe_name->Name
 361                     );
 362                     if (!thunk_list->u1.Function) {
 363                         WARN(win32, "No implementation for %s.%d, setting to NULL\n",
 364                                 Module, pe_name->Hint);
 365                         /* fixup_failed=1; */
 366                     }
 367                 }
 368                 thunk_list++;
 369             }
 370         }
 371         pe_imp++;
 372     }
 373     if (fixup_failed) return 22;
 374     return 0;
 375 }
 376
 377 static int calc_vma_size( HMODULE32 hModule )
 378 {
 379     int i,vma_size = 0;
 380     IMAGE_SECTION_HEADER *pe_seg = PE_SECTIONS(hModule);
 381
 382     TRACE(win32, "Dump of segment table\n");
 383     TRACE(win32, "   Name    VSz  Vaddr     SzRaw   Fileadr  *Reloc *Lineum #Reloc #Linum Char\n");
 384     for (i = 0; i< PE_HEADER(hModule)->FileHeader.NumberOfSections; i++)
 385     {
 386         TRACE(win32, "%8s: %4.4lx %8.8lx %8.8lx %8.8lx %8.8lx %8.8lx %4.4x %4.4x %8.8lx\n",
 387                       pe_seg->Name,
 388                       pe_seg->Misc.VirtualSize,
 389                       pe_seg->VirtualAddress,
 390                       pe_seg->SizeOfRawData,
 391                       pe_seg->PointerToRawData,
 392                       pe_seg->PointerToRelocations,
 393                       pe_seg->PointerToLinenumbers,
 394                       pe_seg->NumberOfRelocations,
 395                       pe_seg->NumberOfLinenumbers,
 396                       pe_seg->Characteristics);
 397         vma_size = MAX(vma_size, pe_seg->VirtualAddress+pe_seg->SizeOfRawData);
 398         pe_seg++;
 399     }
 400     return vma_size;
 401 }
 402
 403 static void do_relocations(WINE_MODREF *wm)
 404 {
 405     PE_MODREF   *pem = &(wm->binfmt.pe);
 406     int delta = wm->module - PE_HEADER(wm->module)->OptionalHeader.ImageBase;
 407     unsigned int load_addr= wm->module;
 408
 409         IMAGE_BASE_RELOCATION           *r = pem->pe_reloc;
 410         int                             hdelta = (delta >> 16) & 0xFFFF;
 411         int                             ldelta = delta & 0xFFFF;
 412
 413         /* int reloc_size = */
 414
 415         if(delta == 0)
 416                 /* Nothing to do */
 417                 return;
 418         while(r->VirtualAddress)
 419         {
 420                 char *page = (char*) RVA(r->VirtualAddress);
 421                 int count = (r->SizeOfBlock - 8)/2;
 422                 int i;
 423                 TRACE(fixup, "%x relocations for page %lx\n",
 424                         count, r->VirtualAddress);
 425                 /* patching in reverse order */
 426                 for(i=0;i<count;i++)
 427                 {
 428                         int offset = r->TypeOffset[i] & 0xFFF;
 429                         int type = r->TypeOffset[i] >> 12;
 430                         TRACE(fixup,"patching %x type %x\n", offset, type);
 431                         switch(type)
 432                         {
 433                         case IMAGE_REL_BASED_ABSOLUTE: break;
 434                         case IMAGE_REL_BASED_HIGH:
 435                                 *(short*)(page+offset) += hdelta;
 436                                 break;
 437                         case IMAGE_REL_BASED_LOW:
 438                                 *(short*)(page+offset) += ldelta;
 439                                 break;
 440                         case IMAGE_REL_BASED_HIGHLOW:
 441 #if 1
 442                                 *(int*)(page+offset) += delta;
 443 #else
 444                                 { int h=*(unsigned short*)(page+offset);
 445                                   int l=r->TypeOffset[++i];
 446                                   *(unsigned int*)(page + offset) = (h<<16) + l + delta;
 447                                 }
 448 #endif
 449                                 break;
 450                         case IMAGE_REL_BASED_HIGHADJ:
 451                                 WARN(win32, "Don't know what to do with IMAGE_REL_BASED_HIGHADJ\n");
 452                                 break;
 453                         case IMAGE_REL_BASED_MIPS_JMPADDR:
 454                                 WARN(win32, "Is this a MIPS machine ???\n");
 455                                 break;
 456                         default:
 457                                 WARN(win32, "Unknown fixup type\n");
 458                                 break;
 459                         }
 460                 }
 461                 r = (IMAGE_BASE_RELOCATION*)((char*)r + r->SizeOfBlock);
 462         }
 463 }
 464
 465
 466
 467
 468
 469 /**********************************************************************
 470  *                      PE_LoadImage
 471  * Load one PE format DLL/EXE into memory
 472  *
 473  * Unluckily we can't just mmap the sections where we want them, for
 474  * (at least) Linux does only support offsets which are page-aligned.
 475  *
 476  * BUT we have to map the whole image anyway, for Win32 programs sometimes
 477  * want to access them. (HMODULE32 point to the start of it)
 478  */
 479 static HMODULE32 PE_LoadImage( HFILE32 hFile )
 480 {
 481     HMODULE32 hModule;
 482     HANDLE32 mapping;
 483
 484     /* map the PE file somewhere */
 485     mapping = CreateFileMapping32A( hFile, NULL, PAGE_READONLY | SEC_COMMIT,
 486                                     0, 0, NULL );
 487     if (!mapping)
 488     {
 489         WARN( win32, "CreateFileMapping error %ld\n",
 490                  GetLastError() );
 491         return 0;
 492     }
 493     hModule = (HMODULE32)MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
 494     CloseHandle( mapping );
 495     if (!hModule)
 496     {
 497         WARN( win32, "PE_LoadImage: MapViewOfFile error %ld\n",
 498                  GetLastError() );
 499         return 0;
 500     }
 501
 502     if (PE_HEADER(hModule)->Signature != IMAGE_NT_SIGNATURE)
 503     {
 504         WARN(win32,"image doesn't have PE signature, but 0x%08lx\n",
 505                 PE_HEADER(hModule)->Signature );
 506         goto error;
 507     }
 508
 509     if (PE_HEADER(hModule)->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
 510     {
 511         MSG("Trying to load PE image for unsupported architecture (");
 512         switch (PE_HEADER(hModule)->FileHeader.Machine)
 513         {
 514         case IMAGE_FILE_MACHINE_UNKNOWN: MSG("Unknown\n"); break;
 515         case IMAGE_FILE_MACHINE_I860:    MSG("I860\n"); break;
 516         case IMAGE_FILE_MACHINE_R3000:   MSG("R3000\n"); break;
 517         case IMAGE_FILE_MACHINE_R4000:   MSG("R4000\n"); break;
 518         case IMAGE_FILE_MACHINE_R10000:  MSG("R10000\n"); break;
 519         case IMAGE_FILE_MACHINE_ALPHA:   MSG("Alpha\n"); break;
 520         case IMAGE_FILE_MACHINE_POWERPC: MSG("PowerPC\n"); break;
 521         default: MSG("Unknown-%04x\n",
 522                          PE_HEADER(hModule)->FileHeader.Machine); break;
 523         }
 524         goto error;
 525     }
 526     return hModule;
 527
 528 error:
 529     UnmapViewOfFile( (LPVOID)hModule );
 530     return 0;
 531 }
 532
 533 /**********************************************************************
 534  * This maps a loaded PE dll into the address space of the specified process.
 535  */
 536 static BOOL32 PE_MapImage( HMODULE32 *phModule, PDB32 *process,
 537                            OFSTRUCT *ofs, DWORD flags )
 538 {
 539         WINE_MODREF             *wm;
 540         PE_MODREF               *pem;
 541         int                     i, result;
 542         DWORD                   load_addr;
 543         IMAGE_DATA_DIRECTORY    dir;
 544         char                    *modname;
 545         int                     vma_size;
 546         HMODULE32               hModule = *phModule;
 547
 548         IMAGE_SECTION_HEADER *pe_seg;
 549         IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *)hModule;
 550         IMAGE_NT_HEADERS *nt_header = PE_HEADER(hModule);
 551
 552
 553         wm = (WINE_MODREF*)HeapAlloc(process->heap,HEAP_ZERO_MEMORY,
 554                                     sizeof(*wm));
 555         wm->type= MODULE32_PE;
 556         pem     = &(wm->binfmt.pe);
 557
 558         /* NOTE: fixup_imports takes care of the correct order */
 559         wm->next        = process->modref_list;
 560         process->modref_list = wm;
 561
 562         if (!(nt_header->FileHeader.Characteristics & IMAGE_FILE_DLL))
 563         {
 564                 if (process->exe_modref)
 565                         WARN(win32,"overwriting old exe_modref... arrgh\n");
 566                 process->exe_modref = wm;
 567         }
 568
 569         load_addr = nt_header->OptionalHeader.ImageBase;
 570         vma_size = calc_vma_size( hModule );
 571         TRACE(win32, "Load addr is %lx\n",load_addr);
 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                 load_addr = (DWORD)VirtualAlloc( NULL, vma_size,
 577                                                  MEM_RESERVE | MEM_COMMIT,
 578                                                  PAGE_EXECUTE_READWRITE );
 579         }
 580         /* *phModule is the module32 entry in the NE_MODULE. We need to
 581          * change it here, since it can get referenced by fixup_imports()
 582          */
 583         wm->module = *phModule = (HMODULE32)load_addr;
 584
 585         TRACE(win32, "Load addr is really %lx, range %x\n",
 586                       load_addr, vma_size);
 587
 588         TRACE(segment, "Loading %s at %lx, range %x\n",
 589               ofs->szPathName, load_addr, vma_size );
 590
 591         /* Store the NT header at the load addr
 592          * (FIXME: should really use mmap)
 593          */
 594         *(IMAGE_DOS_HEADER *)load_addr = *dos_header;
 595         *(IMAGE_NT_HEADERS *)(load_addr + dos_header->e_lfanew) = *nt_header;
 596
 597         pe_seg = PE_SECTIONS(hModule);
 598         for (i = 0; i < nt_header->FileHeader.NumberOfSections; i++, pe_seg++)
 599         {
 600                 /* memcpy only non-BSS segments */
 601                 /* FIXME: this should be done by mmap(..MAP_PRIVATE|MAP_FIXED..)
 602                  * but it is not possible for (at least) Linux needs
 603                  * a page-aligned offset.
 604                  */
 605                 if(!(pe_seg->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA))
 606                     memcpy((char*)RVA(pe_seg->VirtualAddress),
 607                         (char*)(hModule + pe_seg->PointerToRawData),
 608                         pe_seg->SizeOfRawData
 609                     );
 610
 611                 result = RVA (pe_seg->VirtualAddress);
 612 #if 1
 613                 /* not needed, memory is zero */
 614                 if(strcmp(pe_seg->Name, ".bss") == 0)
 615                     memset((void *)result, 0,
 616                            pe_seg->Misc.VirtualSize ?
 617                            pe_seg->Misc.VirtualSize :
 618                            pe_seg->SizeOfRawData);
 619 #endif
 620
 621                 if(strcmp(pe_seg->Name, ".idata") == 0)
 622                         pem->pe_import = (LPIMAGE_IMPORT_DESCRIPTOR) result;
 623
 624                 if(strcmp(pe_seg->Name, ".edata") == 0)
 625                         pem->pe_export = (LPIMAGE_EXPORT_DIRECTORY) result;
 626
 627                 if(strcmp(pe_seg->Name, ".rsrc") == 0)
 628                         pem->pe_resource = (LPIMAGE_RESOURCE_DIRECTORY) result;
 629
 630                 if(strcmp(pe_seg->Name, ".reloc") == 0)
 631                         pem->pe_reloc = (LPIMAGE_BASE_RELOCATION) result;
 632         }
 633
 634         /* There is word that the actual loader does not care about the
 635            section names, and only goes for the DataDirectory */
 636         dir=nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT];
 637         if(dir.Size)
 638         {
 639                 if(pem->pe_export && (int)pem->pe_export!=RVA(dir.VirtualAddress))
 640                         WARN(win32,"wrong export directory??\n");
 641                 /* always trust the directory */
 642                 pem->pe_export = (LPIMAGE_EXPORT_DIRECTORY) RVA(dir.VirtualAddress);
 643         }
 644
 645         dir=nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT];
 646         if(dir.Size)
 647         {
 648                 /*
 649                 if(pem->pe_import && (int)pem->pe_import!=RVA(dir.VirtualAddress))
 650                         WARN(win32,"wrong import directory??\n");
 651                  */
 652                 pem->pe_import = (LPIMAGE_IMPORT_DESCRIPTOR) RVA(dir.VirtualAddress);
 653         }
 654
 655         dir=nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE];
 656         if(dir.Size)
 657         {
 658                 if(pem->pe_resource && (int)pem->pe_resource!=RVA(dir.VirtualAddress))
 659                         WARN(win32,"wrong resource directory??\n");
 660                 pem->pe_resource = (LPIMAGE_RESOURCE_DIRECTORY) RVA(dir.VirtualAddress);
 661         }
 662
 663         if(nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXCEPTION].Size)
 664                 FIXME(win32,"Exception directory ignored\n");
 665
 666         if(nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_SECURITY].Size)
 667                 FIXME(win32,"Security directory ignored\n");
 668
 669
 670
 671         dir=nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
 672         if(dir.Size)
 673         {
 674                 if(pem->pe_reloc && (int)pem->pe_reloc!= RVA(dir.VirtualAddress))
 675                         WARN(win32,"wrong relocation list??\n");
 676                 pem->pe_reloc = (void *) RVA(dir.VirtualAddress);
 677         }
 678
 679         if(nt_header->OptionalHeader.DataDirectory
 680                 [IMAGE_DIRECTORY_ENTRY_COPYRIGHT].Size)
 681                 FIXME(win32,"Copyright string ignored\n");
 682
 683         if(nt_header->OptionalHeader.DataDirectory
 684                 [IMAGE_DIRECTORY_ENTRY_GLOBALPTR].Size)
 685                 FIXME(win32,"Global Pointer (MIPS) ignored\n");
 686
 687         if(nt_header->OptionalHeader.DataDirectory
 688                 [IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG].Size)
 689                 FIXME(win32,"Load Configuration directory ignored\n");
 690
 691         if(nt_header->OptionalHeader.DataDirectory
 692                 [IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT].Size)
 693                 FIXME(win32,"Bound Import directory ignored\n");
 694
 695         if(nt_header->OptionalHeader.DataDirectory
 696                 [IMAGE_DIRECTORY_ENTRY_IAT].Size)
 697                 FIXME(win32,"Import Address Table directory ignored\n");
 698         if(nt_header->OptionalHeader.DataDirectory[13].Size)
 699                 FIXME(win32,"Unknown directory 13 ignored\n");
 700         if(nt_header->OptionalHeader.DataDirectory[14].Size)
 701                 FIXME(win32,"Unknown directory 14 ignored\n");
 702         if(nt_header->OptionalHeader.DataDirectory[15].Size)
 703                 FIXME(win32,"Unknown directory 15 ignored\n");
 704
 705         if(pem->pe_reloc)       do_relocations(wm);
 706         if(pem->pe_export) {
 707                 dump_exports(wm->module);
 708
 709                 wm->modname = HEAP_strdupA(process->heap,0,(char*)RVA(pem->pe_export->Name));
 710         } else {
 711                 /* try to find out the name from the OFSTRUCT */
 712                 char *s;
 713                 modname = s = ofs->szPathName;
 714                 while ((s=strchr(modname,'\\')))
 715                         modname = s+1;
 716                 if ((s=strchr(modname,'.')))
 717                         *s='\0';
 718                 wm->modname = HEAP_strdupA(process->heap,0,modname);
 719         }
 720         if(pem->pe_import)      {
 721                 if (fixup_imports(process,wm)) {
 722                         WINE_MODREF     **xwm;
 723
 724                         /* remove entry from modref chain */
 725                         xwm = &(process->modref_list);
 726                         while (*xwm) {
 727                                 if (*xwm==wm) {
 728                                         *xwm = wm->next;
 729                                         break;
 730                                 }
 731                                 xwm = &((*xwm)->next);
 732                         }
 733                         /* FIXME: there are several more dangling references
 734                          * left. Including dlls loaded by this dll before the
 735                          * failed one. Unrolling is rather difficult with the
 736                          * current structure and we can leave it them lying
 737                          * around with no problems, so we don't care
 738                          */
 739                         return 0;
 740                 }
 741         }
 742
 743         /* Now that we got everything at the right address,
 744          * we can unmap the previous module */
 745         UnmapViewOfFile( (LPVOID)hModule );
 746         return 1;
 747 }
 748
 749 /******************************************************************************
 750  * The PE Library Loader frontend.
 751  * FIXME: handle the flags.
 752  *        internal module handling should be made better here (and in builtin.c)
 753  */
 754 HMODULE32 PE_LoadLibraryEx32A (LPCSTR name, PDB32 *process,
 755                                HFILE32 hFile, DWORD flags)
 756 {
 757         OFSTRUCT        ofs;
 758         HMODULE32       hModule;
 759         NE_MODULE       *pModule;
 760         WINE_MODREF     *wm;
 761
 762         if ((hModule = MODULE_FindModule32( process, name ))) {
 763
 764                 pModule = MODULE_GetPtr32(hModule);
 765                 for (wm= process->modref_list;wm;wm=wm->next)
 766                         if (wm->module == hModule) {
 767                                 pModule->count++;
 768                                 return hModule;
 769                         }
 770                 /* Since MODULE_FindModule32 uses the modref chain too, the
 771                  * module MUST have been found above. If not, something has gone
 772                  * terribly wrong.
 773                  */
 774                 assert(0);
 775         }
 776         /* try to load builtin, enabled modules first */
 777         if ((hModule = BUILTIN32_LoadModule( name, FALSE, process )))
 778             return hModule;
 779
 780         /* try to load the specified dll/exe */
 781         if (HFILE_ERROR32==(hFile=OpenFile32(name,&ofs,OF_READ))) {
 782                 /* Now try the built-in even if disabled */
 783                 if ((hModule = BUILTIN32_LoadModule( name, TRUE, process ))) {
 784                         fprintf( stderr, "Warning: could not load external DLL '%s', using built-in module.\n", name );
 785                         return hModule;
 786                 }
 787                 return 1;
 788         }
 789         if ((hModule = MODULE_CreateDummyModule( &ofs )) < 32) {
 790                 _lclose32(hFile);
 791                 return hModule;
 792         }
 793         pModule         = (NE_MODULE *)GlobalLock16( hModule );
 794         pModule->flags  = NE_FFLAGS_WIN32;
 795         pModule->module32 = PE_LoadImage( hFile );
 796         CloseHandle( hFile );
 797         if (pModule->module32 < 32)
 798         {
 799             FreeLibrary32( hModule);
 800             return 21; /* FIXME: probably 0 */
 801         }
 802
 803         /* (possible) recursion */
 804         if (!PE_MapImage( &(pModule->module32), process, &ofs,flags)) {
 805                 /* FIXME: should free this module and its referenced ones */
 806                 return 0;
 807         }
 808         return pModule->module32;
 809 }
 810
 811 /*****************************************************************************
 812  * Load the PE main .EXE. All other loading is done by PE_LoadLibraryEx32A
 813  * FIXME: this function should use PE_LoadLibraryEx32A, but currently can't
 814  * due to the PROCESS_Create stuff.
 815  */
 816 HINSTANCE16 PE_LoadModule( HFILE32 hFile, OFSTRUCT *ofs, LPCSTR cmd_line,
 817                            LPCSTR env, UINT16 show_cmd )
 818 {
 819     HMODULE16 hModule16;
 820     HMODULE32 hModule32;
 821     HINSTANCE16 hInstance;
 822     NE_MODULE *pModule;
 823     THDB *thdb = THREAD_Current();
 824
 825     if ((hModule16 = MODULE_CreateDummyModule( ofs )) < 32) return hModule16;
 826     pModule = (NE_MODULE *)GlobalLock16( hModule16 );
 827     pModule->flags = NE_FFLAGS_WIN32;
 828
 829     pModule->module32 = hModule32 = PE_LoadImage( hFile );
 830     if (hModule32 < 32) return 21;
 831
 832     hInstance = MODULE_CreateInstance( hModule16, NULL, (cmd_line == NULL) );
 833     if (cmd_line &&
 834         !(PE_HEADER(hModule32)->FileHeader.Characteristics & IMAGE_FILE_DLL))
 835     {
 836         PDB32 *pdb = PROCESS_Create( pModule, cmd_line, env,
 837                                      hInstance, 0, show_cmd );
 838         TDB *pTask = (TDB *)GlobalLock16( pdb->task );
 839         thdb = pTask->thdb;
 840     }
 841     if (!PE_MapImage( &(pModule->module32), thdb->process, ofs, 0 ))
 842     {
 843         /* FIXME: should destroy the task created and free referenced stuff */
 844         return 0;
 845     }
 846     /* FIXME: Yuck. Is there no other good place to do that? */
 847     PE_InitTls( thdb );
 848     return hInstance;
 849 }
 850
 851 /*********************************************************************
 852  * PE_UnloadImage [internal]
 853  */
 854 int PE_UnloadImage( HMODULE32 hModule )
 855 {
 856         FIXME(win32,"stub.\n");
 857         /* free resources, image, unmap */
 858         return 1;
 859 }
 860
 861 /* Called if the library is loaded or freed.
 862  * NOTE: if a thread attaches a DLL, the current thread will only do
 863  * DLL_PROCESS_ATTACH. Only new created threads do DLL_THREAD_ATTACH
 864  * (SDK)
 865  */
 866 static void PE_InitDLL(WINE_MODREF *wm, DWORD type,LPVOID lpReserved)
 867 {
 868     if (wm->type!=MODULE32_PE)
 869         return;
 870     if (type==DLL_PROCESS_ATTACH)
 871         wm->binfmt.pe.flags |= PE_MODREF_PROCESS_ATTACHED;
 872
 873     /*  DLL_ATTACH_PROCESS:
 874      *          lpreserved is NULL for dynamic loads, not-NULL for static loads
 875      *  DLL_DETACH_PROCESS:
 876      *          lpreserved is NULL if called by FreeLibrary, not-NULL otherwise
 877      *  the SDK doesn't mention anything for DLL_THREAD_*
 878      */
 879
 880     /* Is this a library? And has it got an entrypoint? */
 881     if ((PE_HEADER(wm->module)->FileHeader.Characteristics & IMAGE_FILE_DLL) &&
 882         (PE_HEADER(wm->module)->OptionalHeader.AddressOfEntryPoint)
 883     ) {
 884         FARPROC32 entry = (FARPROC32)RVA_PTR( wm->module,
 885                                           OptionalHeader.AddressOfEntryPoint );
 886         TRACE(relay, "CallTo32(entryproc=%p,module=%08x,type=%ld,res=%p)\n",
 887                        entry, wm->module, type, lpReserved );
 888         entry( wm->module, type, lpReserved );
 889     }
 890 }
 891
 892 /* Call the DLLentry function of all dlls used by that process.
 893  * (NOTE: this may recursively call this function (if a library calls
 894  * LoadLibrary) ... but it won't matter)
 895  */
 896 void PE_InitializeDLLs(PDB32 *process,DWORD type,LPVOID lpReserved) {
 897         WINE_MODREF     *wm;
 898
 899         for (wm = process->modref_list;wm;wm=wm->next) {
 900                 PE_MODREF       *pem = NULL;
 901                 if (wm->type!=MODULE32_PE)
 902                         continue;
 903                 pem = &(wm->binfmt.pe);
 904                 if (pem->flags & PE_MODREF_NO_DLL_CALLS)
 905                         continue;
 906                 if (type==DLL_PROCESS_ATTACH) {
 907                         if (pem->flags & PE_MODREF_PROCESS_ATTACHED)
 908                                 continue;
 909                 }
 910                 PE_InitDLL( wm, type, lpReserved );
 911         }
 912 }
 913
 914 void PE_InitTls(THDB *thdb)
 915 {
 916         WINE_MODREF             *wm;
 917         PE_MODREF               *pem;
 918         IMAGE_NT_HEADERS        *peh;
 919         DWORD                   size,datasize;
 920         LPVOID                  mem;
 921         LPIMAGE_TLS_DIRECTORY   pdir;
 922         PDB32                   *pdb = thdb->process;
 923         int delta;
 924
 925         for (wm = pdb->modref_list;wm;wm=wm->next) {
 926                 if (wm->type!=MODULE32_PE)
 927                         continue;
 928                 pem = &(wm->binfmt.pe);
 929                 peh = PE_HEADER(wm->module);
 930                 delta = wm->module - peh->OptionalHeader.ImageBase;
 931                 if (!peh->OptionalHeader.DataDirectory[IMAGE_FILE_THREAD_LOCAL_STORAGE].VirtualAddress)
 932                         continue;
 933                 pdir = (LPVOID)(wm->module + peh->OptionalHeader.
 934                         DataDirectory[IMAGE_FILE_THREAD_LOCAL_STORAGE].VirtualAddress);
 935
 936
 937                 if (!(pem->flags & PE_MODREF_TLS_ALLOCED)) {
 938                         pem->tlsindex = THREAD_TlsAlloc(thdb);
 939                         *(LPDWORD)AdjustPtr(pdir->AddressOfIndex,delta)
 940                           =pem->tlsindex;
 941                 }
 942                 pem->flags |= PE_MODREF_TLS_ALLOCED;
 943                 datasize= pdir->EndAddressOfRawData-pdir->StartAddressOfRawData;
 944                 size    = datasize + pdir->SizeOfZeroFill;
 945                 mem=VirtualAlloc(0,size,MEM_RESERVE|MEM_COMMIT,PAGE_READWRITE);
 946                 memcpy(mem,
 947                        AdjustPtr(pdir->StartAddressOfRawData,delta),
 948                        datasize);
 949
 950                 /* don't use TlsSetValue, we are in the wrong thread */
 951                 if (pdir->AddressOfCallBacks) {
 952                      LPIMAGE_TLS_CALLBACK *cbs =
 953                        (LPIMAGE_TLS_CALLBACK *)
 954                        AdjustPtr(pdir->AddressOfCallBacks, delta);
 955
 956                      if (*cbs) {
 957                        FIXME(win32, "TLS Callbacks aren't going to be called\n");
 958                      }
 959                 }
 960                 thdb->tls_array[pem->tlsindex] = mem;
 961         }
 962 }
 963
 964 /****************************************************************************
 965  *              DisableThreadLibraryCalls (KERNEL32.74)
 966  * Don't call DllEntryPoint for DLL_THREAD_{ATTACH,DETACH} if set.
 967  */
 968 BOOL32 WINAPI DisableThreadLibraryCalls(HMODULE32 hModule)
 969 {
 970         WINE_MODREF     *wm;
 971
 972         for (wm=PROCESS_Current()->modref_list;wm;wm=wm->next)
 973                 if ((wm->module == hModule) && (wm->type==MODULE32_PE))
 974                         wm->binfmt.pe.flags|=PE_MODREF_NO_DLL_CALLS;
 975         return TRUE;
 976 }