loader/pe_image.c

   1 #ifndef WINELIB
   2 /*
   3  *  Copyright   1994    Eric Youndale & Erik Bos
   4  *  Copyright   1995    Martin von Löwis
   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
  13 #include <ctype.h>
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <string.h>
  17 #include <unistd.h>
  18 #include <sys/types.h>
  19 #include <sys/mman.h>
  20 #include "windows.h"
  21 #include "dlls.h"
  22 #include "neexe.h"
  23 #include "peexe.h"
  24 #include "pe_image.h"
  25 #include "relay32.h"
  26 #include "module.h"
  27 #include "alias.h"
  28 #include "global.h"
  29 #include "task.h"
  30 #include "ldt.h"
  31 #include "registers.h"
  32 #include "selectors.h"
  33 #include "stddebug.h"
  34 #include "debug.h"
  35 #include "xmalloc.h"
  36
  37 struct w_files *wine_files = NULL;
  38
  39 void my_wcstombs(char * result, u_short * source, int len)
  40 {
  41   while(len--) {
  42     /* this used to be isascii, but see isascii implementation in Linux'
  43            ctype.h */
  44     if(*source<255) *result++ = *source++;
  45     else {
  46       printf("Unable to handle unicode right now\n");
  47       exit(0);
  48     }
  49   };
  50 }
  51
  52 #if 0
  53 char * xmmap(char * vaddr, unsigned int v_size, unsigned int r_size,
  54         int prot, int flags, int fd, unsigned int file_offset)
  55 {
  56   char * result;
  57   /* .bss has no associated storage in the PE file */
  58   if(r_size)
  59     v_size=r_size;
  60   else
  61 #ifdef __svr4__
  62     fprintf(stderr,"xmmap: %s line %d doesn't support MAP_ANON\n",__FILE__, __LINE__);
  63 #else
  64     flags |= MAP_ANON;
  65 #endif
  66   result = mmap(vaddr, v_size, prot, flags, fd, file_offset);
  67   if((unsigned int) result != 0xffffffff) return result;
  68
  69   /* Sigh.  Alignment must be wrong for mmap.  Do this the hard way. */
  70   if(!(flags & MAP_FIXED)) {
  71     vaddr = (char *)0x40000000;
  72     flags |= MAP_FIXED;
  73   };
  74
  75   mmap(vaddr, v_size, prot, MAP_ANONYMOUS | flags, 0, 0);
  76   lseek(fd, file_offset, SEEK_SET);
  77   read(fd, vaddr, v_size);
  78   return vaddr;
  79 };
  80 #endif
  81
  82 void dump_exports(struct PE_Export_Directory * pe_exports, unsigned int load_addr)
  83 {
  84   char * Module;
  85   int i;
  86   u_short * ordinal;
  87   u_long * function;
  88   u_char ** name, *ename;
  89
  90   Module = ((char *) load_addr) + pe_exports->Name;
  91   dprintf_win32(stddeb,"\n*******EXPORT DATA*******\nModule name is %s, %ld functions, %ld names\n",
  92          Module,
  93          pe_exports->Number_Of_Functions,
  94          pe_exports->Number_Of_Names);
  95
  96   ordinal = (u_short *) (((char *) load_addr) + (int) pe_exports->Address_Of_Name_Ordinals);
  97   function = (u_long *)  (((char *) load_addr) + (int) pe_exports->AddressOfFunctions);
  98   name = (u_char **)  (((char *) load_addr) + (int) pe_exports->AddressOfNames);
  99
 100   dprintf_win32(stddeb,"%-32s Ordinal Virt Addr\n", "Function Name");
 101   for(i=0; i< pe_exports->Number_Of_Functions; i++)
 102     {
 103       ename =  (char *) (((char *) load_addr) + (int) *name++);
 104       dprintf_win32(stddeb,"%-32s %4d    %8.8lx\n", ename, *ordinal++, *function++);
 105     }
 106 }
 107
 108 DWORD PE_FindExportedFunction(struct w_files* wpnt, char* funcName)
 109 {
 110         struct PE_Export_Directory * exports = wpnt->pe->pe_export;
 111         unsigned load_addr = wpnt->pe->load_addr;
 112         u_short * ordinal;
 113         u_long * function;
 114         u_char ** name, *ename;
 115         int i;
 116         if(!exports)return 0;
 117         ordinal = (u_short *) (((char *) load_addr) + (int) exports->Address_Of_Name_Ordinals);
 118         function = (u_long *)  (((char *) load_addr) + (int) exports->AddressOfFunctions);
 119         name = (u_char **)  (((char *) load_addr) + (int) exports->AddressOfNames);
 120         for(i=0; i<exports->Number_Of_Functions; i++)
 121         {
 122                 if(HIWORD(funcName))
 123                 {
 124                         ename =  (char *) (((char *) load_addr) + (int) *name);
 125                         if(strcmp(ename,funcName)==0)
 126                                 return load_addr+*function;
 127                 }else{
 128                         if(funcName == (int)*ordinal + exports->Base)
 129                                 return load_addr+*function;
 130                 }
 131                 function++;
 132                 ordinal++;
 133                 name++;
 134         }
 135         return 0;
 136 }
 137
 138 DWORD PE_GetProcAddress(HMODULE hModule, char* function)
 139 {
 140         struct w_files *wpnt;
 141         for(wpnt=wine_files;wpnt;wpnt=wpnt->next)
 142                 if(wpnt->hModule==hModule) break;
 143         if(!wpnt)return 0;
 144         if(wpnt->builtin)
 145         {
 146                 if(HIWORD(function))
 147                         return RELAY32_GetEntryPoint(wpnt->builtin,function,0);
 148                 else
 149                         return RELAY32_GetEntryPoint(wpnt->builtin,0,(int)function);
 150         }
 151         return PE_FindExportedFunction(wpnt,function);
 152 }
 153
 154 void fixup_imports(struct w_files* wpnt)
 155 {
 156   struct PE_Import_Directory * pe_imp;
 157   int fixup_failed=0;
 158   unsigned int load_addr = wpnt->pe->load_addr;
 159   int i;
 160   NE_MODULE *ne_mod;
 161   HMODULE *mod_ptr;
 162
 163  /* OK, now dump the import list */
 164   dprintf_win32(stddeb, "\nDumping imports list\n");
 165
 166   /* first, count the number of imported non-internal modules */
 167   pe_imp = wpnt->pe->pe_import;
 168   for(i=0;pe_imp->ModuleName;pe_imp++)
 169         i++;
 170
 171   /* Now, allocate memory for dlls_to_init */
 172   ne_mod = GlobalLock(wpnt->hModule);
 173   ne_mod->dlls_to_init = GLOBAL_Alloc(GMEM_ZEROINIT,(i+1) * sizeof(HMODULE),
 174                                         wpnt->hModule, FALSE, FALSE, FALSE );
 175   mod_ptr = GlobalLock(ne_mod->dlls_to_init);
 176   /* load the modules and put their handles into the list */
 177   for(i=0,pe_imp = wpnt->pe->pe_import;pe_imp->ModuleName;pe_imp++)
 178   {
 179         char *name = (char*)load_addr+pe_imp->ModuleName;
 180         if(RELAY32_GetBuiltinDLL(name))
 181                 continue;
 182         mod_ptr[i] = LoadModule(name,(LPVOID)-1);
 183         if(mod_ptr[i]<=(HMODULE)32)
 184         {
 185                 fprintf(stderr,"Module %s not found\n",name);
 186                 exit(0);
 187         }
 188         i++;
 189   }
 190   pe_imp = wpnt->pe->pe_import;
 191   while (pe_imp->ModuleName)
 192     {
 193       char * Module;
 194       struct pe_import_name * pe_name;
 195       unsigned int * import_list, *thunk_list;
 196
 197       Module = ((char *) load_addr) + pe_imp->ModuleName;
 198       dprintf_win32(stddeb, "%s\n", Module);
 199
 200    if(pe_imp->Import_List != 0) { /* original microsoft style */
 201       dprintf_win32(stddeb, "Microsoft style imports used\n");
 202       import_list = (unsigned int *)
 203         (((unsigned int) load_addr) + pe_imp->Import_List);
 204           thunk_list = (unsigned int *)
 205           (((unsigned int) load_addr) + pe_imp->Thunk_List);
 206
 207
 208     while(*import_list)
 209         {
 210           pe_name = (struct pe_import_name *) ((int) load_addr + *import_list);
 211           if((unsigned)*import_list & 0x80000000)
 212           {
 213                 int ordinal=*import_list & (0x80000000-1);
 214                 dprintf_win32(stddeb,"--- Ordinal %s,%d\n", Module, ordinal);
 215                 *thunk_list = WIN32_GetProcAddress(MODULE_FindModule(Module),
 216                         ordinal);
 217           }else{ /* import by name */
 218           dprintf_win32(stddeb, "--- %s %s.%d\n", pe_name->Name, Module, pe_name->Hint);
 219 #ifndef WINELIB /* FIXME: JBP: Should this happen in libwine.a? */
 220                 *thunk_list = WIN32_GetProcAddress(MODULE_FindModule(Module),
 221                                 pe_name->Name);
 222
 223 #else
 224           fprintf(stderr,"JBP: Call to RELAY32_GetEntryPoint being ignored.\n");
 225 #endif
 226                 }
 227           if(!*thunk_list)
 228           {
 229                 fprintf(stderr,"No implementation for %s.%d(%s)\n",Module,
 230                         pe_name->Hint, pe_name->Name);
 231                 fixup_failed=1;
 232           }
 233
 234           import_list++;
 235           thunk_list++;
 236         }
 237     } else { /* Borland style */
 238       dprintf_win32(stddeb, "Borland style imports used\n");
 239       thunk_list = (unsigned int *)
 240         (((unsigned int) load_addr) + pe_imp->Thunk_List);
 241       while(*thunk_list) {
 242         pe_name = (struct pe_import_name *) ((int) load_addr + *thunk_list);
 243         if((unsigned)pe_name & 0x80000000) {
 244           fprintf(stderr,"Import by ordinal not supported\n");
 245           exit(0);
 246         }
 247         dprintf_win32(stddeb, "--- %s %s.%d\n", pe_name->Name, Module, pe_name->Hint);
 248 #ifndef WINELIB /* FIXME: JBP: Should this happen in libwine.a? */
 249         /* FIXME: Both calls should be unified into GetProcAddress */
 250 #if 0
 251         *thunk_list=(unsigned int)RELAY32_GetEntryPoint(Module,pe_name->Name,pe_name->Hint);
 252         if(*thunk_list == 0)
 253 #endif
 254                 *thunk_list = WIN32_GetProcAddress(MODULE_FindModule(Module),
 255                                 pe_name->Name);
 256 #else
 257         fprintf(stderr,"JBP: Call to RELAY32_GetEntryPoint being ignored.\n");
 258 #endif
 259         if(!*thunk_list) {
 260           fprintf(stderr,"No implementation for %s.%d\n",Module, pe_name->Hint);
 261           fixup_failed=1;
 262         }
 263         thunk_list++;
 264       }
 265     }
 266     pe_imp++;
 267   }
 268   if(fixup_failed)exit(1);
 269 }
 270
 271 static void calc_vma_size(struct w_files *wpnt)
 272 {
 273   int i;
 274
 275   dprintf_win32(stddeb, "Dump of segment table\n");
 276   dprintf_win32(stddeb, "   Name    VSz  Vaddr     SzRaw   Fileadr  *Reloc *Lineum #Reloc #Linum Char\n");
 277   for(i=0; i< wpnt->pe->pe_header->coff.NumberOfSections; i++)
 278     {
 279       dprintf_win32(stddeb, "%8s: %4.4lx %8.8lx %8.8lx %8.8lx %8.8lx %8.8lx %4.4x %4.4x %8.8lx\n",
 280              wpnt->pe->pe_seg[i].Name,
 281              wpnt->pe->pe_seg[i].Virtual_Size,
 282              wpnt->pe->pe_seg[i].Virtual_Address,
 283              wpnt->pe->pe_seg[i].Size_Of_Raw_Data,
 284              wpnt->pe->pe_seg[i].PointerToRawData,
 285              wpnt->pe->pe_seg[i].PointerToRelocations,
 286              wpnt->pe->pe_seg[i].PointerToLinenumbers,
 287              wpnt->pe->pe_seg[i].NumberOfRelocations,
 288              wpnt->pe->pe_seg[i].NumberOfLinenumbers,
 289              wpnt->pe->pe_seg[i].Characteristics);
 290           wpnt->pe->vma_size = max(wpnt->pe->vma_size,
 291                         wpnt->pe->pe_seg[i].Virtual_Address +
 292                         wpnt->pe->pe_seg[i].Size_Of_Raw_Data);
 293     }
 294 }
 295
 296 static void do_relocations(struct w_files *wpnt)
 297 {
 298         int delta = wpnt->pe->load_addr - wpnt->pe->base_addr;
 299         struct PE_Reloc_Block *r = wpnt->pe->pe_reloc;
 300         int hdelta = (delta >> 16) & 0xFFFF;
 301         int ldelta = delta & 0xFFFF;
 302         /* int reloc_size = */
 303         if(delta == 0)
 304                 /* Nothing to do */
 305                 return;
 306         while(r->PageRVA)
 307         {
 308                 char *page = (char*)wpnt->pe->load_addr + r->PageRVA;
 309                 int count = (r->BlockSize - 8)/2;
 310                 int i;
 311                 dprintf_fixup(stddeb, "%x relocations for page %lx\n",
 312                         count, r->PageRVA);
 313                 /* patching in reverse order */
 314                 for(i=0;i<count;i++)
 315                 {
 316                         int offset = r->Relocations[i] & 0xFFF;
 317                         int type = r->Relocations[i] >> 12;
 318                         dprintf_fixup(stddeb,"patching %x type %x\n", offset, type);
 319                         switch(type)
 320                         {
 321                         case IMAGE_REL_BASED_ABSOLUTE: break;
 322                         case IMAGE_REL_BASED_HIGH:
 323                                 *(short*)(page+offset) += hdelta;
 324                                 break;
 325                         case IMAGE_REL_BASED_LOW:
 326                                 *(short*)(page+offset) += ldelta;
 327                                 break;
 328                         case IMAGE_REL_BASED_HIGHLOW:
 329 #if 1
 330                                 *(int*)(page+offset) += delta;
 331 #else
 332                                 { int h=*(unsigned short*)(page+offset);
 333                                   int l=r->Relocations[++i];
 334                                   *(unsigned int*)(page + offset) = (h<<16) + l + delta;
 335                                 }
 336 #endif
 337                                 break;
 338                         case IMAGE_REL_BASED_HIGHADJ:
 339                                 fprintf(stderr, "Don't know what to do with IMAGE_REL_BASED_HIGHADJ\n");
 340                                 break;
 341                         case IMAGE_REL_BASED_MIPS_JMPADDR:
 342                                 fprintf(stderr, "Is this a MIPS machine ???\n");
 343                                 break;
 344                         default:
 345                                 fprintf(stderr, "Unknown fixup type\n");
 346                                 break;
 347                         }
 348                 }
 349                 r = (struct PE_Reloc_Block*)((char*)r + r->BlockSize);
 350         }
 351 }
 352
 353
 354
 355
 356
 357 /**********************************************************************
 358  *                      PE_LoadImage
 359  * Load one PE format executable into memory
 360  */
 361 static HINSTANCE PE_LoadImage( int fd, struct w_files *wpnt )
 362 {
 363         int i, result;
 364     unsigned int load_addr;
 365         struct Directory dir;
 366
 367         wpnt->pe = xmalloc(sizeof(struct pe_data));
 368         memset(wpnt->pe,0,sizeof(struct pe_data));
 369         wpnt->pe->pe_header = xmalloc(sizeof(struct pe_header_s));
 370
 371         /* read PE header */
 372         lseek( fd, wpnt->mz_header->ne_offset, SEEK_SET);
 373         read( fd, wpnt->pe->pe_header, sizeof(struct pe_header_s));
 374
 375         /* read sections */
 376         wpnt->pe->pe_seg = xmalloc(sizeof(struct pe_segment_table) *
 377                                    wpnt->pe->pe_header->coff.NumberOfSections);
 378         read( fd, wpnt->pe->pe_seg, sizeof(struct pe_segment_table) *
 379                         wpnt->pe->pe_header->coff.NumberOfSections);
 380
 381         load_addr = wpnt->pe->pe_header->opt_coff.BaseOfImage;
 382         wpnt->pe->base_addr=load_addr;
 383         wpnt->pe->vma_size=0;
 384         dprintf_win32(stddeb, "Load addr is %x\n",load_addr);
 385         calc_vma_size(wpnt);
 386
 387         /* We use malloc here, while a huge part of that address space does
 388            not be supported by actual memory. It has to be contiguous, though.
 389            I don't know if mmap("/dev/null"); would do any better.
 390            What I'd really like to do is a Win32 style VirtualAlloc/MapViewOfFile
 391            sequence */
 392         load_addr = wpnt->pe->load_addr = malloc(wpnt->pe->vma_size);
 393         dprintf_win32(stddeb, "Load addr is really %x, range %x\n",
 394                 wpnt->pe->load_addr, wpnt->pe->vma_size);
 395
 396
 397         for(i=0; i < wpnt->pe->pe_header->coff.NumberOfSections; i++)
 398         {
 399                 /* load only non-BSS segments */
 400                 if(wpnt->pe->pe_seg[i].Characteristics &
 401                         ~ IMAGE_SCN_TYPE_CNT_UNINITIALIZED_DATA)
 402                 if(lseek(fd,wpnt->pe->pe_seg[i].PointerToRawData,SEEK_SET) == -1
 403                 || read(fd,load_addr + wpnt->pe->pe_seg[i].Virtual_Address,
 404                                 wpnt->pe->pe_seg[i].Size_Of_Raw_Data)
 405                                 != wpnt->pe->pe_seg[i].Size_Of_Raw_Data)
 406                 {
 407                         fprintf(stderr,"Failed to load section %x\n", i);
 408                         exit(0);
 409                 }
 410                 result = load_addr + wpnt->pe->pe_seg[i].Virtual_Address;
 411 #if 0
 412         if(!load_addr) {
 413
 414                 result = (int)xmmap((char *)0, wpnt->pe->pe_seg[i].Virtual_Size,
 415                         wpnt->pe->pe_seg[i].Size_Of_Raw_Data, 7,
 416                         MAP_PRIVATE, fd, wpnt->pe->pe_seg[i].PointerToRawData);
 417                 load_addr = (unsigned int) result -  wpnt->pe->pe_seg[i].Virtual_Address;
 418         } else {
 419                 result = (int)xmmap((char *) load_addr + wpnt->pe->pe_seg[i].Virtual_Address,
 420                           wpnt->pe->pe_seg[i].Virtual_Size,
 421                       wpnt->pe->pe_seg[i].Size_Of_Raw_Data, 7, MAP_PRIVATE | MAP_FIXED,
 422                       fd, wpnt->pe->pe_seg[i].PointerToRawData);
 423         }
 424         if(result==-1){
 425                 fprintf(stderr,"Could not load section %x to desired address %lx\n",
 426                         i, load_addr+wpnt->pe->pe_seg[i].Virtual_Address);
 427                 fprintf(stderr,"Need to implement relocations now\n");
 428                 exit(0);
 429         }
 430 #endif
 431
 432         if(strcmp(wpnt->pe->pe_seg[i].Name, ".bss") == 0)
 433             memset((void *)result, 0,
 434                    wpnt->pe->pe_seg[i].Virtual_Size ?
 435                    wpnt->pe->pe_seg[i].Virtual_Size :
 436                    wpnt->pe->pe_seg[i].Size_Of_Raw_Data);
 437
 438         if(strcmp(wpnt->pe->pe_seg[i].Name, ".idata") == 0)
 439                 wpnt->pe->pe_import = (struct PE_Import_Directory *) result;
 440
 441         if(strcmp(wpnt->pe->pe_seg[i].Name, ".edata") == 0)
 442                 wpnt->pe->pe_export = (struct PE_Export_Directory *) result;
 443
 444         if(strcmp(wpnt->pe->pe_seg[i].Name, ".rsrc") == 0) {
 445             wpnt->pe->pe_resource = (struct PE_Resource_Directory *) result;
 446 #if 0
 447 /* FIXME pe->resource_offset should be deleted from structure if this
 448  ifdef doesn't break anything */
 449             /* save offset for PE_FindResource */
 450             wpnt->pe->resource_offset = wpnt->pe->pe_seg[i].Virtual_Address -
 451                                         wpnt->pe->pe_seg[i].PointerToRawData;
 452 #endif
 453             }
 454         if(strcmp(wpnt->pe->pe_seg[i].Name, ".reloc") == 0)
 455                 wpnt->pe->pe_reloc = (struct PE_Reloc_Block *) result;
 456
 457         }
 458
 459         /* There is word that the actual loader does not care about the
 460            section names, and only goes for the DataDirectory */
 461         dir=wpnt->pe->pe_header->opt_coff.DataDirectory[IMAGE_FILE_EXPORT_DIRECTORY];
 462         if(dir.Size)
 463         {
 464                 if(wpnt->pe->pe_export &&
 465                         wpnt->pe->pe_export!=load_addr+dir.Virtual_address)
 466                         fprintf(stderr,"wrong export directory??\n");
 467                 /* always trust the directory */
 468                 wpnt->pe->pe_export = load_addr+dir.Virtual_address;
 469         }
 470
 471         dir=wpnt->pe->pe_header->opt_coff.DataDirectory[IMAGE_FILE_IMPORT_DIRECTORY];
 472         if(dir.Size)
 473         {
 474                 if(wpnt->pe->pe_import &&
 475                         wpnt->pe->pe_import!=load_addr+dir.Virtual_address)
 476                         fprintf(stderr,"wrong import directory??\n");
 477                 wpnt->pe->pe_import = load_addr+dir.Virtual_address;
 478         }
 479
 480         dir=wpnt->pe->pe_header->opt_coff.DataDirectory[IMAGE_FILE_RESOURCE_DIRECTORY];
 481         if(dir.Size)
 482         {
 483                 if(wpnt->pe->pe_resource &&
 484                         wpnt->pe->pe_resource!=load_addr+dir.Virtual_address)
 485                         fprintf(stderr,"wrong resource directory??\n");
 486                 wpnt->pe->pe_resource = load_addr+dir.Virtual_address;
 487         }
 488
 489         dir=wpnt->pe->pe_header->opt_coff.DataDirectory[IMAGE_FILE_BASE_RELOCATION_TABLE];
 490         if(dir.Size)
 491         {
 492                 if(wpnt->pe->pe_reloc &&
 493                         wpnt->pe->pe_reloc!=load_addr+dir.Virtual_address)
 494                         fprintf(stderr,"wrong relocation list??\n");
 495                 wpnt->pe->pe_reloc = load_addr+dir.Virtual_address;
 496         }
 497
 498         if(wpnt->pe->pe_header->opt_coff.DataDirectory
 499                 [IMAGE_FILE_EXCEPTION_DIRECTORY].Size)
 500                 dprintf_win32(stdnimp,"Exception directory ignored\n");
 501
 502         if(wpnt->pe->pe_header->opt_coff.DataDirectory
 503                 [IMAGE_FILE_SECURITY_DIRECTORY].Size)
 504                 dprintf_win32(stdnimp,"Security directory ignored\n");
 505
 506         if(wpnt->pe->pe_header->opt_coff.DataDirectory
 507                 [IMAGE_FILE_DEBUG_DIRECTORY].Size)
 508                 dprintf_win32(stdnimp,"Debug directory ignored\n");
 509
 510         if(wpnt->pe->pe_header->opt_coff.DataDirectory
 511                 [IMAGE_FILE_DESCRIPTION_STRING].Size)
 512                 dprintf_win32(stdnimp,"Description string ignored\n");
 513
 514         if(wpnt->pe->pe_header->opt_coff.DataDirectory
 515                 [IMAGE_FILE_MACHINE_VALUE].Size)
 516                 dprintf_win32(stdnimp,"Machine Value ignored\n");
 517
 518         if(wpnt->pe->pe_header->opt_coff.DataDirectory
 519                 [IMAGE_FILE_THREAD_LOCAL_STORAGE].Size)
 520                  dprintf_win32(stdnimp,"Thread local storage ignored\n");
 521
 522         if(wpnt->pe->pe_header->opt_coff.DataDirectory
 523                 [IMAGE_FILE_CALLBACK_DIRECTORY].Size)
 524                 dprintf_win32(stdnimp,"Callback directory ignored\n");
 525
 526
 527         if(wpnt->pe->pe_import) fixup_imports(wpnt);
 528         if(wpnt->pe->pe_export) dump_exports(wpnt->pe->pe_export,load_addr);
 529         if(wpnt->pe->pe_reloc) do_relocations(wpnt);
 530
 531         wpnt->hinstance = (HINSTANCE)0x8000;
 532         wpnt->load_addr = load_addr;
 533         return (wpnt->hinstance);
 534 }
 535
 536 HINSTANCE MODULE_CreateInstance(HMODULE hModule,LOADPARAMS *params);
 537 void InitTask(struct sigcontext_struct context);
 538
 539 HINSTANCE PE_LoadModule(int fd, OFSTRUCT *ofs, LOADPARAMS* params)
 540 {
 541         struct w_files *wpnt;
 542         int size;
 543         NE_MODULE *pModule;
 544         LOADEDFILEINFO *pFileInfo;
 545         SEGTABLEENTRY *pSegment;
 546         char *pStr;
 547         DWORD cts;
 548         HMODULE hModule;
 549         HINSTANCE hInstance;
 550
 551         ALIAS_UseAliases=1;
 552
 553         wpnt=xmalloc(sizeof(struct w_files));
 554         wpnt->ofs=*ofs;
 555         wpnt->type=0;
 556         wpnt->hinstance=0;
 557         wpnt->hModule=0;
 558         wpnt->initialised=0;
 559         wpnt->builtin=0;
 560         lseek(fd,0,SEEK_SET);
 561         wpnt->mz_header=xmalloc(sizeof(struct mz_header_s));
 562         read(fd,wpnt->mz_header,sizeof(struct mz_header_s));
 563
 564         size=sizeof(NE_MODULE) +
 565                 /* loaded file info */
 566                 sizeof(LOADEDFILEINFO) + strlen(ofs->szPathName) +
 567                 /* segment table: DS,CS */
 568                 2 * sizeof(SEGTABLEENTRY) +
 569                 /* name table */
 570                 9 +
 571                 /* several empty tables */
 572                 8;
 573
 574         hModule = GlobalAlloc( GMEM_MOVEABLE | GMEM_ZEROINIT, size );
 575         wpnt->hModule=hModule;
 576         if (!hModule) return (HINSTANCE)11;  /* invalid exe */
 577
 578         FarSetOwner( hModule, hModule );
 579
 580         pModule = (NE_MODULE*)GlobalLock(hModule);
 581
 582         /* Set all used entries */
 583         pModule->magic=PE_SIGNATURE;
 584         pModule->count=1;
 585         pModule->next=0;
 586         pModule->flags=0;
 587         pModule->dgroup=1;
 588         pModule->ss=1;
 589         pModule->cs=2;
 590         /* Who wants to LocalAlloc for a PE Module? */
 591         pModule->heap_size=0x1000;
 592         pModule->stack_size=0xF000;
 593         pModule->seg_count=1;
 594         pModule->modref_count=0;
 595         pModule->nrname_size=0;
 596         pModule->seg_table=sizeof(NE_MODULE)+
 597                         sizeof(LOADEDFILEINFO)+strlen(ofs->szPathName);
 598         pModule->fileinfo=sizeof(NE_MODULE);
 599         pModule->os_flags=NE_OSFLAGS_WINDOWS;
 600         pModule->expected_version=0x30A;
 601
 602         pFileInfo=(LOADEDFILEINFO *)(pModule + 1);
 603         pFileInfo->length = sizeof(LOADEDFILEINFO)+strlen(ofs->szPathName)-1;
 604         strcpy(pFileInfo->filename,ofs->szPathName);
 605
 606         pSegment=(SEGTABLEENTRY*)((char*)pFileInfo+pFileInfo->length+1);
 607         pModule->dgroup_entry=(int)pSegment-(int)pModule;
 608         pSegment->size=0;
 609         pSegment->flags=NE_SEGFLAGS_DATA;
 610         pSegment->minsize=0x1000;
 611         pSegment++;
 612
 613         cts=(DWORD)GetWndProcEntry16("Win32CallToStart");
 614 #ifdef WINELIB32
 615         pSegment->selector=(void*)cts;
 616         pModule->ip=0;
 617 #else
 618         pSegment->selector=cts>>16;
 619         pModule->ip=cts & 0xFFFF;
 620 #endif
 621         pSegment++;
 622
 623         pStr=(char*)pSegment;
 624         pModule->name_table=(int)pStr-(int)pModule;
 625         strcpy(pStr,"\x08W32SXXXX");
 626         pStr+=9;
 627
 628         /* All tables zero terminated */
 629         pModule->res_table=pModule->import_table=pModule->entry_table=
 630                 (int)pStr-(int)pModule;
 631
 632         MODULE_RegisterModule(hModule);
 633
 634         PE_LoadImage( fd, wpnt );
 635
 636         pModule->heap_size=0x1000;
 637         pModule->stack_size=0xE000;
 638
 639         /* CreateInstance allocates now 64KB */
 640         hInstance=MODULE_CreateInstance(hModule,NULL /* FIX: NULL? really? */);
 641         wpnt->hinstance=hInstance;
 642
 643         if (wpnt->pe->pe_export) {
 644                 pStr = ((unsigned char *)(wpnt->load_addr))+wpnt->pe->pe_export->Name;
 645                 wpnt->name = xstrdup(pStr);
 646         } else {
 647                 wpnt->name = xstrdup( ofs->szPathName );
 648         }
 649
 650         wpnt->next=wine_files;
 651         wine_files=wpnt;
 652
 653         /* FIXME: Is this really the correct place to initialise the DLL? */
 654         if ((wpnt->pe->pe_header->coff.Characteristics & IMAGE_FILE_DLL)) {
 655             PE_InitDLL(wpnt);
 656         } else {
 657             TASK_CreateTask(hModule,hInstance,0,
 658                 params->hEnvironment,(LPSTR)PTR_SEG_TO_LIN(params->cmdLine),
 659                 *((WORD*)PTR_SEG_TO_LIN(params->showCmd)+1));
 660         }
 661         return hInstance;
 662 }
 663
 664 int USER_InitApp(HINSTANCE hInstance);
 665 void PE_InitTEB(int hTEB);
 666
 667 void PE_Win32CallToStart(struct sigcontext_struct context)
 668 {
 669         int fs;
 670         struct w_files *wpnt=wine_files;
 671         dprintf_win32(stddeb,"Going to start Win32 program\n");
 672         InitTask(context);
 673         USER_InitApp(wpnt->hModule);
 674         fs=(int)GlobalAlloc(GHND,0x10000);
 675         PE_InitTEB(fs);
 676         __asm__ __volatile__("movw %w0,%%fs"::"r" (fs));
 677         ((void(*)())(wpnt->load_addr+wpnt->pe->pe_header->opt_coff.AddressOfEntryPoint))();
 678 }
 679
 680 int PE_UnloadImage(struct w_files *wpnt)
 681 {
 682         printf("PEunloadImage() called!\n");
 683         /* free resources, image, unmap */
 684         return 1;
 685 }
 686
 687 void PE_InitDLL(HMODULE hModule)
 688 {
 689         struct w_files *wpnt;
 690         hModule = GetExePtr(hModule);
 691         for(wpnt = wine_files;wpnt && wpnt->hModule != hModule;
 692                 wpnt = wpnt->next) /*nothing*/;
 693         if(!wpnt || wpnt->initialised)
 694                 return;
 695         /* FIXME: What are the correct values for parameters 2 and 3? */
 696
 697         /* Is this a library? */
 698         if (wpnt->pe->pe_header->coff.Characteristics & IMAGE_FILE_DLL) {
 699                 /* Should call DLLEntryPoint here */
 700                 printf("InitPEDLL() called!\n");
 701                 wpnt->initialised = 1;
 702                 ((void(*)())(wpnt->load_addr+wpnt->pe->pe_header->opt_coff.AddressOfEntryPoint))(wpnt->hModule, 0, 0);
 703         }
 704 }
 705
 706
 707 /* FIXME: This stuff is all on a "well it works" basis. An implementation
 708 based on some kind of documentation would be greatly appreciated :-) */
 709
 710 typedef struct
 711 {
 712     void        *Except;
 713     void        *stack;
 714     int         dummy1[4];
 715     struct TEB  *TEBDSAlias;
 716     int         dummy2[2];
 717     int         taskid;
 718 } TEB;
 719
 720 void PE_InitTEB(int hTEB)
 721 {
 722     TDB *pTask;
 723     TEB *pTEB;
 724
 725     pTask = (TDB *)(GlobalLock(GetCurrentTask() & 0xffff));
 726     pTEB = (TEB *)(PTR_SEG_OFF_TO_LIN(hTEB, 0));
 727     pTEB->stack = (void *)(GlobalLock(pTask->hStack32));
 728     pTEB->Except = (void *)(-1);
 729     pTEB->TEBDSAlias = pTEB;
 730     pTEB->taskid = getpid();
 731 }
 732
 733 void PE_InitializeDLLs(HMODULE hModule)
 734 {
 735         NE_MODULE *pModule;
 736         HMODULE *pDLL;
 737         pModule = (NE_MODULE *)GlobalLock( GetExePtr(hModule) );
 738         if (pModule->dlls_to_init)
 739         {
 740                 HANDLE to_init = pModule->dlls_to_init;
 741                 pModule->dlls_to_init = 0;
 742                 for (pDLL = (HMODULE *)GlobalLock( to_init ); *pDLL; pDLL++)
 743                 {
 744                         PE_InitializeDLLs( *pDLL );
 745                         PE_InitDLL( *pDLL );
 746                 }
 747                 GlobalFree( to_init );
 748         }
 749         PE_InitDLL( hModule );
 750 }
 751 #endif /* WINELIB */