win32/kernel32.c

   1 /*
   2  * KERNEL32 thunks and other undocumented stuff
   3  *
   4  * Copyright 1997-1998 Marcus Meissner
   5  * Copyright 1998      Ulrich Weigand
   6  *
   7  */
   8
   9 #include <string.h>
  10 #include <sys/types.h>
  11 #include <unistd.h>
  12
  13 #include "windef.h"
  14 #include "winbase.h"
  15 #include "wine/winbase16.h"
  16 #include "callback.h"
  17 #include "task.h"
  18 #include "user.h"
  19 #include "heap.h"
  20 #include "module.h"
  21 #include "neexe.h"
  22 #include "process.h"
  23 #include "stackframe.h"
  24 #include "selectors.h"
  25 #include "file.h"
  26 #include "debugtools.h"
  27 #include "flatthunk.h"
  28 #include "syslevel.h"
  29 #include "winerror.h"
  30
  31 DEFAULT_DEBUG_CHANNEL(thunk);
  32 DECLARE_DEBUG_CHANNEL(win32);
  33
  34
  35 /***********************************************************************
  36  *                                                                     *
  37  *                 Win95 internal thunks                               *
  38  *                                                                     *
  39  ***********************************************************************/
  40
  41 /***********************************************************************
  42  *           LogApiThk    (KERNEL.423)
  43  */
  44 void WINAPI LogApiThk( LPSTR func )
  45 {
  46     TRACE( "%s\n", debugstr_a(func) );
  47 }
  48
  49 /***********************************************************************
  50  *           LogApiThkLSF    (KERNEL32.42)
  51  *
  52  * NOTE: needs to preserve all registers!
  53  */
  54 void WINAPI LogApiThkLSF( LPSTR func, CONTEXT86 *context )
  55 {
  56     TRACE( "%s\n", debugstr_a(func) );
  57 }
  58
  59 /***********************************************************************
  60  *           LogApiThkSL    (KERNEL32.44)
  61  *
  62  * NOTE: needs to preserve all registers!
  63  */
  64 void WINAPI LogApiThkSL( LPSTR func, CONTEXT86 *context )
  65 {
  66     TRACE( "%s\n", debugstr_a(func) );
  67 }
  68
  69 /***********************************************************************
  70  *           LogCBThkSL    (KERNEL32.47)
  71  *
  72  * NOTE: needs to preserve all registers!
  73  */
  74 void WINAPI LogCBThkSL( LPSTR func, CONTEXT86 *context )
  75 {
  76     TRACE( "%s\n", debugstr_a(func) );
  77 }
  78
  79 /***********************************************************************
  80  * Generates a FT_Prolog call.
  81  *
  82  *  0FB6D1                  movzbl edx,cl
  83  *  8B1495xxxxxxxx          mov edx,[4*edx + targetTable]
  84  *  68xxxxxxxx              push FT_Prolog
  85  *  C3                      lret
  86  */
  87 static void _write_ftprolog(LPBYTE relayCode ,DWORD *targetTable) {
  88         LPBYTE  x;
  89
  90         x       = relayCode;
  91         *x++    = 0x0f;*x++=0xb6;*x++=0xd1; /* movzbl edx,cl */
  92         *x++    = 0x8B;*x++=0x14;*x++=0x95;*(DWORD**)x= targetTable;
  93         x+=4;   /* mov edx, [4*edx + targetTable] */
  94         *x++    = 0x68; *(DWORD*)x = (DWORD)GetProcAddress(GetModuleHandleA("KERNEL32"),"FT_Prolog");
  95         x+=4;   /* push FT_Prolog */
  96         *x++    = 0xC3;         /* lret */
  97         /* fill rest with 0xCC / int 3 */
  98 }
  99
 100 /***********************************************************************
 101  *      _write_qtthunk                                  (internal)
 102  * Generates a QT_Thunk style call.
 103  *
 104  *  33C9                    xor ecx, ecx
 105  *  8A4DFC                  mov cl , [ebp-04]
 106  *  8B148Dxxxxxxxx          mov edx, [4*ecx + targetTable]
 107  *  B8yyyyyyyy              mov eax, QT_Thunk
 108  *  FFE0                    jmp eax
 109  */
 110 static void _write_qtthunk(
 111         LPBYTE relayCode,       /* [in] start of QT_Thunk stub */
 112         DWORD *targetTable      /* [in] start of thunk (for index lookup) */
 113 ) {
 114         LPBYTE  x;
 115
 116         x       = relayCode;
 117         *x++    = 0x33;*x++=0xC9; /* xor ecx,ecx */
 118         *x++    = 0x8A;*x++=0x4D;*x++=0xFC; /* movb cl,[ebp-04] */
 119         *x++    = 0x8B;*x++=0x14;*x++=0x8D;*(DWORD**)x= targetTable;
 120         x+=4;   /* mov edx, [4*ecx + targetTable */
 121         *x++    = 0xB8; *(DWORD*)x = (DWORD)GetProcAddress(GetModuleHandleA("KERNEL32"),"QT_Thunk");
 122         x+=4;   /* mov eax , QT_Thunk */
 123         *x++    = 0xFF; *x++ = 0xE0;    /* jmp eax */
 124         /* should fill the rest of the 32 bytes with 0xCC */
 125 }
 126
 127 /***********************************************************************
 128  *           _loadthunk
 129  */
 130 static LPVOID _loadthunk(LPCSTR module, LPCSTR func, LPCSTR module32,
 131                          struct ThunkDataCommon *TD32, DWORD checksum)
 132 {
 133     struct ThunkDataCommon *TD16;
 134     HMODULE hmod;
 135     int ordinal;
 136
 137     if ((hmod = LoadLibrary16(module)) <= 32)
 138     {
 139         ERR("(%s, %s, %s): Unable to load '%s', error %d\n",
 140                    module, func, module32, module, hmod);
 141         return 0;
 142     }
 143
 144     if (   !(ordinal = NE_GetOrdinal(hmod, func))
 145         || !(TD16 = PTR_SEG_TO_LIN(NE_GetEntryPointEx(hmod, ordinal, FALSE))))
 146     {
 147         ERR("(%s, %s, %s): Unable to find '%s'\n",
 148                    module, func, module32, func);
 149         return 0;
 150     }
 151
 152     if (TD32 && memcmp(TD16->magic, TD32->magic, 4))
 153     {
 154         ERR("(%s, %s, %s): Bad magic %c%c%c%c (should be %c%c%c%c)\n",
 155                    module, func, module32,
 156                    TD16->magic[0], TD16->magic[1], TD16->magic[2], TD16->magic[3],
 157                    TD32->magic[0], TD32->magic[1], TD32->magic[2], TD32->magic[3]);
 158         return 0;
 159     }
 160
 161     if (TD32 && TD16->checksum != TD32->checksum)
 162     {
 163         ERR("(%s, %s, %s): Wrong checksum %08lx (should be %08lx)\n",
 164                    module, func, module32, TD16->checksum, TD32->checksum);
 165         return 0;
 166     }
 167
 168     if (!TD32 && checksum && checksum != *(LPDWORD)TD16)
 169     {
 170         ERR("(%s, %s, %s): Wrong checksum %08lx (should be %08lx)\n",
 171                    module, func, module32, *(LPDWORD)TD16, checksum);
 172         return 0;
 173     }
 174
 175     return TD16;
 176 }
 177
 178 /***********************************************************************
 179  *           GetThunkStuff    (KERNEL32.53)
 180  */
 181 LPVOID WINAPI GetThunkStuff(LPSTR module, LPSTR func)
 182 {
 183     return _loadthunk(module, func, "<kernel>", NULL, 0L);
 184 }
 185
 186 /***********************************************************************
 187  *           GetThunkBuff    (KERNEL32.52)
 188  * Returns a pointer to ThkBuf in the 16bit library SYSTHUNK.DLL.
 189  */
 190 LPVOID WINAPI GetThunkBuff(void)
 191 {
 192     return GetThunkStuff("SYSTHUNK.DLL", "ThkBuf");
 193 }
 194
 195 /***********************************************************************
 196  *              ThunkConnect32          (KERNEL32)
 197  * Connects a 32bit and a 16bit thunkbuffer.
 198  */
 199 UINT WINAPI ThunkConnect32(
 200         struct ThunkDataCommon *TD,  /* [in/out] thunkbuffer */
 201         LPSTR thunkfun16,            /* [in] win16 thunkfunction */
 202         LPSTR module16,              /* [in] name of win16 dll */
 203         LPSTR module32,              /* [in] name of win32 dll */
 204         HMODULE hmod32,            /* [in] hmodule of win32 dll */
 205         DWORD dwReason               /* [in] initialisation argument */
 206 ) {
 207     BOOL directionSL;
 208
 209     if (!strncmp(TD->magic, "SL01", 4))
 210     {
 211         directionSL = TRUE;
 212
 213         TRACE("SL01 thunk %s (%lx) <- %s (%s), Reason: %ld\n",
 214                      module32, (DWORD)TD, module16, thunkfun16, dwReason);
 215     }
 216     else if (!strncmp(TD->magic, "LS01", 4))
 217     {
 218         directionSL = FALSE;
 219
 220         TRACE("LS01 thunk %s (%lx) -> %s (%s), Reason: %ld\n",
 221                      module32, (DWORD)TD, module16, thunkfun16, dwReason);
 222     }
 223     else
 224     {
 225         ERR("Invalid magic %c%c%c%c\n",
 226                    TD->magic[0], TD->magic[1], TD->magic[2], TD->magic[3]);
 227         return 0;
 228     }
 229
 230     switch (dwReason)
 231     {
 232         case DLL_PROCESS_ATTACH:
 233         {
 234             struct ThunkDataCommon *TD16;
 235             if (!(TD16 = _loadthunk(module16, thunkfun16, module32, TD, 0L)))
 236                 return 0;
 237
 238             if (directionSL)
 239             {
 240                 struct ThunkDataSL32 *SL32 = (struct ThunkDataSL32 *)TD;
 241                 struct ThunkDataSL16 *SL16 = (struct ThunkDataSL16 *)TD16;
 242                 struct SLTargetDB *tdb;
 243
 244                 if (SL16->fpData == NULL)
 245                 {
 246                     ERR("ThunkConnect16 was not called!\n");
 247                     return 0;
 248                 }
 249
 250                 SL32->data = SL16->fpData;
 251
 252                 tdb = HeapAlloc(GetProcessHeap(), 0, sizeof(*tdb));
 253                 tdb->process = PROCESS_Current();
 254                 tdb->targetTable = (DWORD *)(thunkfun16 + SL32->offsetTargetTable);
 255
 256                 tdb->next = SL32->data->targetDB;   /* FIXME: not thread-safe! */
 257                 SL32->data->targetDB = tdb;
 258
 259                 TRACE("Process %08lx allocated TargetDB entry for ThunkDataSL %08lx\n",
 260                              (DWORD)PROCESS_Current(), (DWORD)SL32->data);
 261             }
 262             else
 263             {
 264                 struct ThunkDataLS32 *LS32 = (struct ThunkDataLS32 *)TD;
 265                 struct ThunkDataLS16 *LS16 = (struct ThunkDataLS16 *)TD16;
 266
 267                 LS32->targetTable = PTR_SEG_TO_LIN(LS16->targetTable);
 268
 269                 /* write QT_Thunk and FT_Prolog stubs */
 270                 _write_qtthunk ((LPBYTE)TD + LS32->offsetQTThunk,  LS32->targetTable);
 271                 _write_ftprolog((LPBYTE)TD + LS32->offsetFTProlog, LS32->targetTable);
 272             }
 273             break;
 274         }
 275
 276         case DLL_PROCESS_DETACH:
 277             /* FIXME: cleanup */
 278             break;
 279     }
 280
 281     return 1;
 282 }
 283
 284 /**********************************************************************
 285  *              QT_Thunk                        (KERNEL32)
 286  *
 287  * The target address is in EDX.
 288  * The 16 bit arguments start at ESP.
 289  * The number of 16bit argument bytes is EBP-ESP-0x40 (64 Byte thunksetup).
 290  * [ok]
 291  */
 292 void WINAPI QT_Thunk( CONTEXT86 *context )
 293 {
 294     CONTEXT86 context16;
 295     DWORD argsize;
 296
 297     memcpy(&context16,context,sizeof(context16));
 298
 299     CS_reg(&context16)  = HIWORD(EDX_reg(context));
 300     EIP_reg(&context16) = LOWORD(EDX_reg(context));
 301     EBP_reg(&context16) = OFFSETOF( NtCurrentTeb()->cur_stack )
 302                            + (WORD)&((STACK16FRAME*)0)->bp;
 303
 304     argsize = EBP_reg(context)-ESP_reg(context)-0x40;
 305
 306     memcpy( (LPBYTE)CURRENT_STACK16 - argsize,
 307             (LPBYTE)ESP_reg(context), argsize );
 308
 309     EAX_reg(context) = Callbacks->CallRegisterShortProc( &context16, argsize );
 310     EDX_reg(context) = HIWORD(EAX_reg(context));
 311     EAX_reg(context) = LOWORD(EAX_reg(context));
 312 }
 313
 314
 315 /**********************************************************************
 316  *              FT_Prolog                       (KERNEL32.233)
 317  *
 318  * The set of FT_... thunk routines is used instead of QT_Thunk,
 319  * if structures have to be converted from 32-bit to 16-bit
 320  * (change of member alignment, conversion of members).
 321  *
 322  * The thunk function (as created by the thunk compiler) calls
 323  * FT_Prolog at the beginning, to set up a stack frame and
 324  * allocate a 64 byte buffer on the stack.
 325  * The input parameters (target address and some flags) are
 326  * saved for later use by FT_Thunk.
 327  *
 328  * Input:  EDX  16-bit target address (SEGPTR)
 329  *         CX   bits  0..7   target number (in target table)
 330  *              bits  8..9   some flags (unclear???)
 331  *              bits 10..15  number of DWORD arguments
 332  *
 333  * Output: A new stackframe is created, and a 64 byte buffer
 334  *         allocated on the stack. The layout of the stack
 335  *         on return is as follows:
 336  *
 337  *  (ebp+4)  return address to caller of thunk function
 338  *  (ebp)    old EBP
 339  *  (ebp-4)  saved EBX register of caller
 340  *  (ebp-8)  saved ESI register of caller
 341  *  (ebp-12) saved EDI register of caller
 342  *  (ebp-16) saved ECX register, containing flags
 343  *  (ebp-20) bitmap containing parameters that are to be converted
 344  *           by FT_Thunk; it is initialized to 0 by FT_Prolog and
 345  *           filled in by the thunk code before calling FT_Thunk
 346  *  (ebp-24)
 347  *    ...    (unclear)
 348  *  (ebp-44)
 349  *  (ebp-48) saved EAX register of caller (unclear, never restored???)
 350  *  (ebp-52) saved EDX register, containing 16-bit thunk target
 351  *  (ebp-56)
 352  *    ...    (unclear)
 353  *  (ebp-64)
 354  *
 355  *  ESP is EBP-64 after return.
 356  *
 357  */
 358
 359 void WINAPI FT_Prolog( CONTEXT86 *context )
 360 {
 361     /* Build stack frame */
 362     stack32_push(context, EBP_reg(context));
 363     EBP_reg(context) = ESP_reg(context);
 364
 365     /* Allocate 64-byte Thunk Buffer */
 366     ESP_reg(context) -= 64;
 367     memset((char *)ESP_reg(context), '\0', 64);
 368
 369     /* Store Flags (ECX) and Target Address (EDX) */
 370     /* Save other registers to be restored later */
 371     *(DWORD *)(EBP_reg(context) -  4) = EBX_reg(context);
 372     *(DWORD *)(EBP_reg(context) -  8) = ESI_reg(context);
 373     *(DWORD *)(EBP_reg(context) - 12) = EDI_reg(context);
 374     *(DWORD *)(EBP_reg(context) - 16) = ECX_reg(context);
 375
 376     *(DWORD *)(EBP_reg(context) - 48) = EAX_reg(context);
 377     *(DWORD *)(EBP_reg(context) - 52) = EDX_reg(context);
 378 }
 379
 380 /**********************************************************************
 381  *              FT_Thunk                        (KERNEL32.234)
 382  *
 383  * This routine performs the actual call to 16-bit code,
 384  * similar to QT_Thunk. The differences are:
 385  *  - The call target is taken from the buffer created by FT_Prolog
 386  *  - Those arguments requested by the thunk code (by setting the
 387  *    corresponding bit in the bitmap at EBP-20) are converted
 388  *    from 32-bit pointers to segmented pointers (those pointers
 389  *    are guaranteed to point to structures copied to the stack
 390  *    by the thunk code, so we always use the 16-bit stack selector
 391  *    for those addresses).
 392  *
 393  *    The bit #i of EBP-20 corresponds here to the DWORD starting at
 394  *    ESP+4 + 2*i.
 395  *
 396  * FIXME: It is unclear what happens if there are more than 32 WORDs
 397  *        of arguments, so that the single DWORD bitmap is no longer
 398  *        sufficient ...
 399  */
 400
 401 void WINAPI FT_Thunk( CONTEXT86 *context )
 402 {
 403     DWORD mapESPrelative = *(DWORD *)(EBP_reg(context) - 20);
 404     DWORD callTarget     = *(DWORD *)(EBP_reg(context) - 52);
 405
 406     CONTEXT86 context16;
 407     DWORD i, argsize;
 408     LPBYTE newstack, oldstack;
 409
 410     memcpy(&context16,context,sizeof(context16));
 411
 412     CS_reg(&context16)  = HIWORD(callTarget);
 413     EIP_reg(&context16) = LOWORD(callTarget);
 414     EBP_reg(&context16) = OFFSETOF( NtCurrentTeb()->cur_stack )
 415                            + (WORD)&((STACK16FRAME*)0)->bp;
 416
 417     argsize  = EBP_reg(context)-ESP_reg(context)-0x40;
 418     newstack = (LPBYTE)CURRENT_STACK16 - argsize;
 419     oldstack = (LPBYTE)ESP_reg(context);
 420
 421     memcpy( newstack, oldstack, argsize );
 422
 423     for (i = 0; i < 32; i++)    /* NOTE: What about > 32 arguments? */
 424         if (mapESPrelative & (1 << i))
 425         {
 426             SEGPTR *arg = (SEGPTR *)(newstack + 2*i);
 427             *arg = PTR_SEG_OFF_TO_SEGPTR(SELECTOROF(NtCurrentTeb()->cur_stack),
 428                                          OFFSETOF(NtCurrentTeb()->cur_stack) - argsize
 429                                          + (*(LPBYTE *)arg - oldstack));
 430         }
 431
 432     EAX_reg(context) = Callbacks->CallRegisterShortProc( &context16, argsize );
 433     EDX_reg(context) = HIWORD(EAX_reg(context));
 434     EAX_reg(context) = LOWORD(EAX_reg(context));
 435
 436     /* Copy modified buffers back to 32-bit stack */
 437     memcpy( oldstack, newstack, argsize );
 438 }
 439
 440 /**********************************************************************
 441  *              FT_ExitNN               (KERNEL32.218 - 232)
 442  *
 443  * One of the FT_ExitNN functions is called at the end of the thunk code.
 444  * It removes the stack frame created by FT_Prolog, moves the function
 445  * return from EBX to EAX (yes, FT_Thunk did use EAX for the return
 446  * value, but the thunk code has moved it from EAX to EBX in the
 447  * meantime ... :-), restores the caller's EBX, ESI, and EDI registers,
 448  * and perform a return to the CALLER of the thunk code (while removing
 449  * the given number of arguments from the caller's stack).
 450  */
 451
 452 static void FT_Exit(CONTEXT86 *context, int nPopArgs)
 453 {
 454     /* Return value is in EBX */
 455     EAX_reg(context) = EBX_reg(context);
 456
 457     /* Restore EBX, ESI, and EDI registers */
 458     EBX_reg(context) = *(DWORD *)(EBP_reg(context) -  4);
 459     ESI_reg(context) = *(DWORD *)(EBP_reg(context) -  8);
 460     EDI_reg(context) = *(DWORD *)(EBP_reg(context) - 12);
 461
 462     /* Clean up stack frame */
 463     ESP_reg(context) = EBP_reg(context);
 464     EBP_reg(context) = stack32_pop(context);
 465
 466     /* Pop return address to CALLER of thunk code */
 467     EIP_reg(context) = stack32_pop(context);
 468     /* Remove arguments */
 469     ESP_reg(context) += nPopArgs;
 470 }
 471
 472 void WINAPI FT_Exit0 (CONTEXT86 *context) { FT_Exit(context,  0); }
 473 void WINAPI FT_Exit4 (CONTEXT86 *context) { FT_Exit(context,  4); }
 474 void WINAPI FT_Exit8 (CONTEXT86 *context) { FT_Exit(context,  8); }
 475 void WINAPI FT_Exit12(CONTEXT86 *context) { FT_Exit(context, 12); }
 476 void WINAPI FT_Exit16(CONTEXT86 *context) { FT_Exit(context, 16); }
 477 void WINAPI FT_Exit20(CONTEXT86 *context) { FT_Exit(context, 20); }
 478 void WINAPI FT_Exit24(CONTEXT86 *context) { FT_Exit(context, 24); }
 479 void WINAPI FT_Exit28(CONTEXT86 *context) { FT_Exit(context, 28); }
 480 void WINAPI FT_Exit32(CONTEXT86 *context) { FT_Exit(context, 32); }
 481 void WINAPI FT_Exit36(CONTEXT86 *context) { FT_Exit(context, 36); }
 482 void WINAPI FT_Exit40(CONTEXT86 *context) { FT_Exit(context, 40); }
 483 void WINAPI FT_Exit44(CONTEXT86 *context) { FT_Exit(context, 44); }
 484 void WINAPI FT_Exit48(CONTEXT86 *context) { FT_Exit(context, 48); }
 485 void WINAPI FT_Exit52(CONTEXT86 *context) { FT_Exit(context, 52); }
 486 void WINAPI FT_Exit56(CONTEXT86 *context) { FT_Exit(context, 56); }
 487
 488
 489 /***********************************************************************
 490  *              ThunkInitLS     (KERNEL32.43)
 491  * A thunkbuffer link routine
 492  * The thunkbuf looks like:
 493  *
 494  *      00: DWORD       length          ? don't know exactly
 495  *      04: SEGPTR      ptr             ? where does it point to?
 496  * The pointer ptr is written into the first DWORD of 'thunk'.
 497  * (probably correct implemented)
 498  * [ok probably]
 499  * RETURNS
 500  *      segmented pointer to thunk?
 501  */
 502 DWORD WINAPI ThunkInitLS(
 503         LPDWORD thunk,  /* [in] win32 thunk */
 504         LPCSTR thkbuf,  /* [in] thkbuffer name in win16 dll */
 505         DWORD len,      /* [in] thkbuffer length */
 506         LPCSTR dll16,   /* [in] name of win16 dll */
 507         LPCSTR dll32    /* [in] name of win32 dll (FIXME: not used?) */
 508 ) {
 509         LPDWORD         addr;
 510
 511         if (!(addr = _loadthunk( dll16, thkbuf, dll32, NULL, len )))
 512                 return 0;
 513
 514         if (!addr[1])
 515                 return 0;
 516         *(DWORD*)thunk = addr[1];
 517
 518         return addr[1];
 519 }
 520
 521 /***********************************************************************
 522  *              Common32ThkLS   (KERNEL32.45)
 523  *
 524  * This is another 32->16 thunk, independent of the QT_Thunk/FT_Thunk
 525  * style thunks. The basic difference is that the parameter conversion
 526  * is done completely on the *16-bit* side here. Thus we do not call
 527  * the 16-bit target directly, but call a common entry point instead.
 528  * This entry function then calls the target according to the target
 529  * number passed in the DI register.
 530  *
 531  * Input:  EAX    SEGPTR to the common 16-bit entry point
 532  *         CX     offset in thunk table (target number * 4)
 533  *         DX     error return value if execution fails (unclear???)
 534  *         EDX.HI number of DWORD parameters
 535  *
 536  * (Note that we need to move the thunk table offset from CX to DI !)
 537  *
 538  * The called 16-bit stub expects its stack to look like this:
 539  *     ...
 540  *   (esp+40)  32-bit arguments
 541  *     ...
 542  *   (esp+8)   32 byte of stack space available as buffer
 543  *   (esp)     8 byte return address for use with 0x66 lret
 544  *
 545  * The called 16-bit stub uses a 0x66 lret to return to 32-bit code,
 546  * and uses the EAX register to return a DWORD return value.
 547  * Thus we need to use a special assembly glue routine
 548  * (CallRegisterLongProc instead of CallRegisterShortProc).
 549  *
 550  * Finally, we return to the caller, popping the arguments off
 551  * the stack.
 552  *
 553  * FIXME: The called function uses EBX to return the number of
 554  *        arguments that are to be popped off the caller's stack.
 555  *        This is clobbered by the assembly glue, so we simply use
 556  *        the original EDX.HI to get the number of arguments.
 557  *        (Those two values should be equal anyway ...?)
 558  *
 559  */
 560 void WINAPI Common32ThkLS( CONTEXT86 *context )
 561 {
 562     CONTEXT86 context16;
 563     DWORD argsize;
 564
 565     memcpy(&context16,context,sizeof(context16));
 566
 567     DI_reg(&context16)  = CX_reg(context);
 568     CS_reg(&context16)  = HIWORD(EAX_reg(context));
 569     EIP_reg(&context16) = LOWORD(EAX_reg(context));
 570     EBP_reg(&context16) = OFFSETOF( NtCurrentTeb()->cur_stack )
 571                            + (WORD)&((STACK16FRAME*)0)->bp;
 572
 573     argsize = HIWORD(EDX_reg(context)) * 4;
 574
 575     /* FIXME: hack for stupid USER32 CallbackGlueLS routine */
 576     if (EDX_reg(context) == EIP_reg(context))
 577         argsize = 6 * 4;
 578
 579     memcpy( (LPBYTE)CURRENT_STACK16 - argsize,
 580             (LPBYTE)ESP_reg(context), argsize );
 581
 582     EAX_reg(context) = Callbacks->CallRegisterLongProc(&context16, argsize + 32);
 583
 584     /* Clean up caller's stack frame */
 585     ESP_reg(context) += argsize;
 586 }
 587
 588 /***********************************************************************
 589  *              OT_32ThkLSF     (KERNEL32.40)
 590  *
 591  * YET Another 32->16 thunk. The difference to Common32ThkLS is that
 592  * argument processing is done on both the 32-bit and the 16-bit side:
 593  * The 32-bit side prepares arguments, copying them onto the stack.
 594  *
 595  * When this routine is called, the first word on the stack is the
 596  * number of argument bytes prepared by the 32-bit code, and EDX
 597  * contains the 16-bit target address.
 598  *
 599  * The called 16-bit routine is another relaycode, doing further
 600  * argument processing and then calling the real 16-bit target
 601  * whose address is stored at [bp-04].
 602  *
 603  * The call proceeds using a normal CallRegisterShortProc.
 604  * After return from the 16-bit relaycode, the arguments need
 605  * to be copied *back* to the 32-bit stack, since the 32-bit
 606  * relaycode processes output parameters.
 607  *
 608  * Note that we copy twice the number of arguments, since some of the
 609  * 16-bit relaycodes in SYSTHUNK.DLL directly access the original
 610  * arguments of the caller!
 611  *
 612  * (Note that this function seems only to be used for
 613  *  OLECLI32 -> OLECLI and OLESVR32 -> OLESVR thunking.)
 614  */
 615 void WINAPI OT_32ThkLSF( CONTEXT86 *context )
 616 {
 617     CONTEXT86 context16;
 618     DWORD argsize;
 619
 620     memcpy(&context16,context,sizeof(context16));
 621
 622     CS_reg(&context16)  = HIWORD(EDX_reg(context));
 623     EIP_reg(&context16) = LOWORD(EDX_reg(context));
 624     EBP_reg(&context16) = OFFSETOF( NtCurrentTeb()->cur_stack )
 625                            + (WORD)&((STACK16FRAME*)0)->bp;
 626
 627     argsize = 2 * *(WORD *)ESP_reg(context) + 2;
 628
 629     memcpy( (LPBYTE)CURRENT_STACK16 - argsize,
 630             (LPBYTE)ESP_reg(context), argsize );
 631
 632     EAX_reg(context) = Callbacks->CallRegisterShortProc(&context16, argsize);
 633
 634     memcpy( (LPBYTE)ESP_reg(context),
 635             (LPBYTE)CURRENT_STACK16 - argsize, argsize );
 636 }
 637
 638 /***********************************************************************
 639  *              ThunkInitLSF            (KERNEL32.41)
 640  * A thunk setup routine.
 641  * Expects a pointer to a preinitialized thunkbuffer in the first argument
 642  * looking like:
 643  *      00..03:         unknown (pointer, check _41, _43, _46)
 644  *      04: EB1E                jmp +0x20
 645  *
 646  *      06..23:         unknown (space for replacement code, check .90)
 647  *
 648  *      24:>E800000000          call offset 29
 649  *      29:>58                  pop eax            ( target of call )
 650  *      2A: 2D25000000          sub eax,0x00000025 ( now points to offset 4 )
 651  *      2F: BAxxxxxxxx          mov edx,xxxxxxxx
 652  *      34: 68yyyyyyyy          push KERNEL32.90
 653  *      39: C3                  ret
 654  *
 655  *      3A: EB1E                jmp +0x20
 656  *      3E ... 59:      unknown (space for replacement code?)
 657  *      5A: E8xxxxxxxx          call <32bitoffset xxxxxxxx>
 658  *      5F: 5A                  pop edx
 659  *      60: 81EA25xxxxxx        sub edx, 0x25xxxxxx
 660  *      66: 52                  push edx
 661  *      67: 68xxxxxxxx          push xxxxxxxx
 662  *      6C: 68yyyyyyyy          push KERNEL32.89
 663  *      71: C3                  ret
 664  *      72: end?
 665  * This function checks if the code is there, and replaces the yyyyyyyy entries
 666  * by the functionpointers.
 667  * The thunkbuf looks like:
 668  *
 669  *      00: DWORD       length          ? don't know exactly
 670  *      04: SEGPTR      ptr             ? where does it point to?
 671  * The segpointer ptr is written into the first DWORD of 'thunk'.
 672  * [ok probably]
 673  * RETURNS
 674  *      unclear, pointer to win16 thkbuffer?
 675  */
 676 LPVOID WINAPI ThunkInitLSF(
 677         LPBYTE thunk,   /* [in] win32 thunk */
 678         LPCSTR thkbuf,  /* [in] thkbuffer name in win16 dll */
 679         DWORD len,      /* [in] length of thkbuffer */
 680         LPCSTR dll16,   /* [in] name of win16 dll */
 681         LPCSTR dll32    /* [in] name of win32 dll */
 682 ) {
 683         HMODULE hkrnl32 = GetModuleHandleA("KERNEL32");
 684         LPDWORD         addr,addr2;
 685
 686         /* FIXME: add checks for valid code ... */
 687         /* write pointers to kernel32.89 and kernel32.90 (+ordinal base of 1) */
 688         *(DWORD*)(thunk+0x35) = (DWORD)GetProcAddress(hkrnl32,(LPSTR)90);
 689         *(DWORD*)(thunk+0x6D) = (DWORD)GetProcAddress(hkrnl32,(LPSTR)89);
 690
 691
 692         if (!(addr = _loadthunk( dll16, thkbuf, dll32, NULL, len )))
 693                 return 0;
 694
 695         addr2 = PTR_SEG_TO_LIN(addr[1]);
 696         if (HIWORD(addr2))
 697                 *(DWORD*)thunk = (DWORD)addr2;
 698
 699         return addr2;
 700 }
 701
 702 /***********************************************************************
 703  *              FT_PrologPrime                  (KERNEL32.89)
 704  *
 705  * This function is called from the relay code installed by
 706  * ThunkInitLSF. It replaces the location from where it was
 707  * called by a standard FT_Prolog call stub (which is 'primed'
 708  * by inserting the correct target table pointer).
 709  * Finally, it calls that stub.
 710  *
 711  * Input:  ECX    target number + flags (passed through to FT_Prolog)
 712  *        (ESP)   offset of location where target table pointer
 713  *                is stored, relative to the start of the relay code
 714  *        (ESP+4) pointer to start of relay code
 715  *                (this is where the FT_Prolog call stub gets written to)
 716  *
 717  * Note: The two DWORD arguments get popped off the stack.
 718  *
 719  */
 720 void WINAPI FT_PrologPrime( CONTEXT86 *context )
 721 {
 722     DWORD  targetTableOffset;
 723     LPBYTE relayCode;
 724
 725     /* Compensate for the fact that the Wine register relay code thought
 726        we were being called, although we were in fact jumped to */
 727     ESP_reg(context) -= 4;
 728
 729     /* Write FT_Prolog call stub */
 730     targetTableOffset = stack32_pop(context);
 731     relayCode = (LPBYTE)stack32_pop(context);
 732     _write_ftprolog( relayCode, *(DWORD **)(relayCode+targetTableOffset) );
 733
 734     /* Jump to the call stub just created */
 735     EIP_reg(context) = (DWORD)relayCode;
 736 }
 737
 738 /***********************************************************************
 739  *              QT_ThunkPrime                   (KERNEL32.90)
 740  *
 741  * This function corresponds to FT_PrologPrime, but installs a
 742  * call stub for QT_Thunk instead.
 743  *
 744  * Input: (EBP-4) target number (passed through to QT_Thunk)
 745  *         EDX    target table pointer location offset
 746  *         EAX    start of relay code
 747  *
 748  */
 749 void WINAPI QT_ThunkPrime( CONTEXT86 *context )
 750 {
 751     DWORD  targetTableOffset;
 752     LPBYTE relayCode;
 753
 754     /* Compensate for the fact that the Wine register relay code thought
 755        we were being called, although we were in fact jumped to */
 756     ESP_reg(context) -= 4;
 757
 758     /* Write QT_Thunk call stub */
 759     targetTableOffset = EDX_reg(context);
 760     relayCode = (LPBYTE)EAX_reg(context);
 761     _write_qtthunk( relayCode, *(DWORD **)(relayCode+targetTableOffset) );
 762
 763     /* Jump to the call stub just created */
 764     EIP_reg(context) = (DWORD)relayCode;
 765 }
 766
 767 /***********************************************************************
 768  *                                                      (KERNEL32.46)
 769  * Another thunkbuf link routine.
 770  * The start of the thunkbuf looks like this:
 771  *      00: DWORD       length
 772  *      04: SEGPTR      address for thunkbuffer pointer
 773  * [ok probably]
 774  */
 775 VOID WINAPI ThunkInitSL(
 776         LPBYTE thunk,           /* [in] start of thunkbuffer */
 777         LPCSTR thkbuf,          /* [in] name/ordinal of thunkbuffer in win16 dll */
 778         DWORD len,              /* [in] length of thunkbuffer */
 779         LPCSTR dll16,           /* [in] name of win16 dll containing the thkbuf */
 780         LPCSTR dll32            /* [in] win32 dll. FIXME: strange, unused */
 781 ) {
 782         LPDWORD         addr;
 783
 784         if (!(addr = _loadthunk( dll16, thkbuf, dll32, NULL, len )))
 785                 return;
 786
 787         *(DWORD*)PTR_SEG_TO_LIN(addr[1]) = (DWORD)thunk;
 788 }
 789
 790 /**********************************************************************
 791  *           SSInit             KERNEL.700
 792  * RETURNS
 793  *      TRUE for success.
 794  */
 795 BOOL WINAPI SSInit16()
 796 {
 797     return TRUE;
 798 }
 799
 800 /**********************************************************************
 801  *           SSOnBigStack       KERNEL32.87
 802  * Check if thunking is initialized (ss selector set up etc.)
 803  * We do that differently, so just return TRUE.
 804  * [ok]
 805  * RETURNS
 806  *      TRUE for success.
 807  */
 808 BOOL WINAPI SSOnBigStack()
 809 {
 810     TRACE("Yes, thunking is initialized\n");
 811     return TRUE;
 812 }
 813
 814 /**********************************************************************
 815  *           SSConfirmSmallStack     KERNEL.704
 816  *
 817  * Abort if not on small stack.
 818  *
 819  * This must be a register routine as it has to preserve *all* registers.
 820  */
 821 void WINAPI SSConfirmSmallStack( CONTEXT86 *context )
 822 {
 823     /* We are always on the small stack while in 16-bit code ... */
 824 }
 825
 826 /**********************************************************************
 827  *           SSCall
 828  * One of the real thunking functions. This one seems to be for 32<->32
 829  * thunks. It should probably be capable of crossing processboundaries.
 830  *
 831  * And YES, I've seen nr=48 (somewhere in the Win95 32<->16 OLE coupling)
 832  * [ok]
 833  */
 834 DWORD WINAPIV SSCall(
 835         DWORD nr,       /* [in] number of argument bytes */
 836         DWORD flags,    /* [in] FIXME: flags ? */
 837         FARPROC fun,    /* [in] function to call */
 838         ...             /* [in/out] arguments */
 839 ) {
 840     DWORD i,ret;
 841     DWORD *args = ((DWORD *)&fun) + 1;
 842
 843     if(TRACE_ON(thunk))
 844     {
 845       DPRINTF("(%ld,0x%08lx,%p,[",nr,flags,fun);
 846       for (i=0;i<nr/4;i++)
 847           DPRINTF("0x%08lx,",args[i]);
 848       DPRINTF("])\n");
 849     }
 850     switch (nr) {
 851     case 0:     ret = fun();
 852                 break;
 853     case 4:     ret = fun(args[0]);
 854                 break;
 855     case 8:     ret = fun(args[0],args[1]);
 856                 break;
 857     case 12:    ret = fun(args[0],args[1],args[2]);
 858                 break;
 859     case 16:    ret = fun(args[0],args[1],args[2],args[3]);
 860                 break;
 861     case 20:    ret = fun(args[0],args[1],args[2],args[3],args[4]);
 862                 break;
 863     case 24:    ret = fun(args[0],args[1],args[2],args[3],args[4],args[5]);
 864                 break;
 865     case 28:    ret = fun(args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
 866                 break;
 867     case 32:    ret = fun(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
 868                 break;
 869     case 36:    ret = fun(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8]);
 870                 break;
 871     case 40:    ret = fun(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9]);
 872                 break;
 873     case 44:    ret = fun(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9],args[10]);
 874                 break;
 875     case 48:    ret = fun(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9],args[10],args[11]);
 876                 break;
 877     default:
 878         WARN("Unsupported nr of arguments, %ld\n",nr);
 879         ret = 0;
 880         break;
 881
 882     }
 883     TRACE(" returning %ld ...\n",ret);
 884     return ret;
 885 }
 886
 887 /**********************************************************************
 888  *           W32S_BackTo32                      (KERNEL32.51)
 889  */
 890 void WINAPI W32S_BackTo32( CONTEXT86 *context )
 891 {
 892     LPDWORD stack = (LPDWORD)ESP_reg( context );
 893     FARPROC proc = (FARPROC)EIP_reg(context);
 894
 895     EAX_reg( context ) = proc( stack[1], stack[2], stack[3], stack[4], stack[5],
 896                                stack[6], stack[7], stack[8], stack[9], stack[10] );
 897
 898     EIP_reg( context ) = stack32_pop(context);
 899 }
 900
 901 /**********************************************************************
 902  *                      AllocSLCallback         (KERNEL32)
 903  *
 904  * Win95 uses some structchains for callbacks. It allocates them
 905  * in blocks of 100 entries, size 32 bytes each, layout:
 906  * blockstart:
 907  *      0:      PTR     nextblockstart
 908  *      4:      entry   *first;
 909  *      8:      WORD    sel ( start points to blockstart)
 910  *      A:      WORD    unknown
 911  * 100xentry:
 912  *      00..17:         Code
 913  *      18:     PDB     *owning_process;
 914  *      1C:     PTR     blockstart
 915  *
 916  * We ignore this for now. (Just a note for further developers)
 917  * FIXME: use this method, so we don't waste selectors...
 918  *
 919  * Following code is then generated by AllocSLCallback. The code is 16 bit, so
 920  * the 0x66 prefix switches from word->long registers.
 921  *
 922  *      665A            pop     edx
 923  *      6668x arg2 x    pushl   <arg2>
 924  *      6652            push    edx
 925  *      EAx arg1 x      jmpf    <arg1>
 926  *
 927  * returns the startaddress of this thunk.
 928  *
 929  * Note, that they look very similair to the ones allocates by THUNK_Alloc.
 930  * RETURNS
 931  *      segmented pointer to the start of the thunk
 932  */
 933 DWORD WINAPI
 934 AllocSLCallback(
 935         DWORD finalizer,        /* [in] finalizer function */
 936         DWORD callback          /* [in] callback function */
 937 ) {
 938         LPBYTE  x,thunk = HeapAlloc( GetProcessHeap(), 0, 32 );
 939         WORD    sel;
 940
 941         x=thunk;
 942         *x++=0x66;*x++=0x5a;                            /* popl edx */
 943         *x++=0x66;*x++=0x68;*(DWORD*)x=finalizer;x+=4;  /* pushl finalizer */
 944         *x++=0x66;*x++=0x52;                            /* pushl edx */
 945         *x++=0xea;*(DWORD*)x=callback;x+=4;             /* jmpf callback */
 946
 947         *(PDB**)(thunk+18) = PROCESS_Current();
 948
 949         sel = SELECTOR_AllocBlock( thunk , 32, SEGMENT_CODE, FALSE, FALSE );
 950         return (sel<<16)|0;
 951 }
 952
 953 /**********************************************************************
 954  *              FreeSLCallback          (KERNEL32.274)
 955  * Frees the specified 16->32 callback
 956  */
 957 void WINAPI
 958 FreeSLCallback(
 959         DWORD x /* [in] 16 bit callback (segmented pointer?) */
 960 ) {
 961         FIXME_(win32)("(0x%08lx): stub\n",x);
 962 }
 963
 964
 965 /**********************************************************************
 966  *              GetTEBSelectorFS        (KERNEL.475)
 967  *      Set the 16-bit %fs to the 32-bit %fs (current TEB selector)
 968  */
 969 void WINAPI GetTEBSelectorFS16(void)
 970 {
 971     GET_FS( CURRENT_STACK16->fs );
 972 }
 973
 974 /**********************************************************************
 975  *              KERNEL_431              (KERNEL.431)
 976  *              IsPeFormat              (W32SYS.2)
 977  * Checks the passed filename if it is a PE format executeable
 978  * RETURNS
 979  *  TRUE, if it is.
 980  *  FALSE if not.
 981  */
 982 BOOL16 WINAPI IsPeFormat16(
 983         LPSTR   fn,     /* [in] filename to executeable */
 984         HFILE16 hf16    /* [in] open file, if filename is NULL */
 985 ) {
 986         IMAGE_DOS_HEADER        mzh;
 987         HFILE                 hf=FILE_GetHandle(hf16);
 988         OFSTRUCT                ofs;
 989         DWORD                   xmagic;
 990
 991         if (fn) {
 992                 hf = OpenFile(fn,&ofs,OF_READ);
 993                 if (hf==HFILE_ERROR)
 994                         return FALSE;
 995         }
 996         _llseek(hf,0,SEEK_SET);
 997         if (sizeof(mzh)!=_lread(hf,&mzh,sizeof(mzh))) {
 998                 _lclose(hf);
 999                 return FALSE;
1000         }
1001         if (mzh.e_magic!=IMAGE_DOS_SIGNATURE) {
1002                 WARN("File has not got dos signature!\n");
1003                 _lclose(hf);
1004                 return FALSE;
1005         }
1006         _llseek(hf,mzh.e_lfanew,SEEK_SET);
1007         if (sizeof(DWORD)!=_lread(hf,&xmagic,sizeof(DWORD))) {
1008                 _lclose(hf);
1009                 return FALSE;
1010         }
1011         _lclose(hf);
1012         return (xmagic == IMAGE_NT_SIGNATURE);
1013 }
1014
1015
1016 /***********************************************************************
1017  *           K32Thk1632Prolog                   (KERNEL32.492)
1018  */
1019 void WINAPI K32Thk1632Prolog( CONTEXT86 *context )
1020 {
1021    LPBYTE code = (LPBYTE)EIP_reg(context) - 5;
1022
1023    /* Arrrgh! SYSTHUNK.DLL just has to re-implement another method
1024       of 16->32 thunks instead of using one of the standard methods!
1025       This means that SYSTHUNK.DLL itself switches to a 32-bit stack,
1026       and does a far call to the 32-bit code segment of OLECLI32/OLESVR32.
1027       Unfortunately, our CallTo/CallFrom mechanism is therefore completely
1028       bypassed, which means it will crash the next time the 32-bit OLE
1029       code thunks down again to 16-bit (this *will* happen!).
1030
1031       The following hack tries to recognize this situation.
1032       This is possible since the called stubs in OLECLI32/OLESVR32 all
1033       look exactly the same:
1034         00   E8xxxxxxxx    call K32Thk1632Prolog
1035         05   FF55FC        call [ebp-04]
1036         08   E8xxxxxxxx    call K32Thk1632Epilog
1037         0D   66CB          retf
1038
1039       If we recognize this situation, we try to simulate the actions
1040       of our CallTo/CallFrom mechanism by copying the 16-bit stack
1041       to our 32-bit stack, creating a proper STACK16FRAME and
1042       updating cur_stack. */
1043
1044    if (   code[5] == 0xFF && code[6] == 0x55 && code[7] == 0xFC
1045        && code[13] == 0x66 && code[14] == 0xCB)
1046    {
1047       WORD  stackSel  = NtCurrentTeb()->stack_sel;
1048       DWORD stackBase = GetSelectorBase(stackSel);
1049
1050       DWORD argSize = EBP_reg(context) - ESP_reg(context);
1051       char *stack16 = (char *)ESP_reg(context) - 4;
1052       char *stack32 = (char *)NtCurrentTeb()->cur_stack - argSize;
1053       STACK16FRAME *frame16 = (STACK16FRAME *)stack16 - 1;
1054
1055       TRACE("before SYSTHUNK hack: EBP: %08lx ESP: %08lx cur_stack: %08lx\n",
1056                    EBP_reg(context), ESP_reg(context), NtCurrentTeb()->cur_stack);
1057
1058       memset(frame16, '\0', sizeof(STACK16FRAME));
1059       frame16->frame32 = (STACK32FRAME *)NtCurrentTeb()->cur_stack;
1060       frame16->ebp = EBP_reg(context);
1061
1062       memcpy(stack32, stack16, argSize);
1063       NtCurrentTeb()->cur_stack = PTR_SEG_OFF_TO_SEGPTR(stackSel, (DWORD)frame16 - stackBase);
1064
1065       ESP_reg(context) = (DWORD)stack32 + 4;
1066       EBP_reg(context) = ESP_reg(context) + argSize;
1067
1068       TRACE("after  SYSTHUNK hack: EBP: %08lx ESP: %08lx cur_stack: %08lx\n",
1069                    EBP_reg(context), ESP_reg(context), NtCurrentTeb()->cur_stack);
1070    }
1071
1072    SYSLEVEL_ReleaseWin16Lock();
1073 }
1074
1075 /***********************************************************************
1076  *           K32Thk1632Epilog                   (KERNEL32.491)
1077  */
1078 void WINAPI K32Thk1632Epilog( CONTEXT86 *context )
1079 {
1080    LPBYTE code = (LPBYTE)EIP_reg(context) - 13;
1081
1082    SYSLEVEL_RestoreWin16Lock();
1083
1084    /* We undo the SYSTHUNK hack if necessary. See K32Thk1632Prolog. */
1085
1086    if (   code[5] == 0xFF && code[6] == 0x55 && code[7] == 0xFC
1087        && code[13] == 0x66 && code[14] == 0xCB)
1088    {
1089       STACK16FRAME *frame16 = (STACK16FRAME *)PTR_SEG_TO_LIN(NtCurrentTeb()->cur_stack);
1090       char *stack16 = (char *)(frame16 + 1);
1091       DWORD argSize = frame16->ebp - (DWORD)stack16;
1092       char *stack32 = (char *)frame16->frame32 - argSize;
1093
1094       DWORD nArgsPopped = ESP_reg(context) - (DWORD)stack32;
1095
1096       TRACE("before SYSTHUNK hack: EBP: %08lx ESP: %08lx cur_stack: %08lx\n",
1097                    EBP_reg(context), ESP_reg(context), NtCurrentTeb()->cur_stack);
1098
1099       NtCurrentTeb()->cur_stack = (DWORD)frame16->frame32;
1100
1101       ESP_reg(context) = (DWORD)stack16 + nArgsPopped;
1102       EBP_reg(context) = frame16->ebp;
1103
1104       TRACE("after  SYSTHUNK hack: EBP: %08lx ESP: %08lx cur_stack: %08lx\n",
1105                    EBP_reg(context), ESP_reg(context), NtCurrentTeb()->cur_stack);
1106    }
1107 }
1108
1109 /***********************************************************************
1110  *           UpdateResource32A                 (KERNEL32.707)
1111  */
1112 BOOL WINAPI UpdateResourceA(
1113   HANDLE  hUpdate,
1114   LPCSTR  lpType,
1115   LPCSTR  lpName,
1116   WORD    wLanguage,
1117   LPVOID  lpData,
1118   DWORD   cbData) {
1119
1120   FIXME_(win32)(": stub\n");
1121   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1122   return FALSE;
1123 }
1124
1125 /***********************************************************************
1126  *           UpdateResource32W                 (KERNEL32.708)
1127  */
1128 BOOL WINAPI UpdateResourceW(
1129   HANDLE  hUpdate,
1130   LPCWSTR lpType,
1131   LPCWSTR lpName,
1132   WORD    wLanguage,
1133   LPVOID  lpData,
1134   DWORD   cbData) {
1135
1136   FIXME_(win32)(": stub\n");
1137   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1138   return FALSE;
1139 }
1140
1141
1142 /***********************************************************************
1143  *           WaitNamedPipe32A                 [KERNEL32.725]
1144  */
1145 BOOL WINAPI WaitNamedPipeA (LPCSTR lpNamedPipeName, DWORD nTimeOut)
1146 {       FIXME_(win32)("%s 0x%08lx\n",lpNamedPipeName,nTimeOut);
1147         SetLastError(ERROR_PIPE_NOT_CONNECTED);
1148         return FALSE;
1149 }
1150 /***********************************************************************
1151  *           WaitNamedPipe32W                 [KERNEL32.726]
1152  */
1153 BOOL WINAPI WaitNamedPipeW (LPCWSTR lpNamedPipeName, DWORD nTimeOut)
1154 {       FIXME_(win32)("%s 0x%08lx\n",debugstr_w(lpNamedPipeName),nTimeOut);
1155         SetLastError(ERROR_PIPE_NOT_CONNECTED);
1156         return FALSE;
1157 }
1158
1159 /*********************************************************************
1160  *                   PK16FNF [KERNEL32.91]
1161  *
1162  *  This routine fills in the supplied 13-byte (8.3 plus terminator)
1163  *  string buffer with the 8.3 filename of a recently loaded 16-bit
1164  *  module.  It is unknown exactly what modules trigger this
1165  *  mechanism or what purpose this serves.  Win98 Explorer (and
1166  *  probably also Win95 with IE 4 shell integration) calls this
1167  *  several times during initialization.
1168  *
1169  *  FIXME: find out what this really does and make it work.
1170  */
1171 void WINAPI PK16FNF(LPSTR strPtr)
1172 {
1173        FIXME_(win32)("(%p): stub\n", strPtr);
1174
1175        /* fill in a fake filename that'll be easy to recognize */
1176        lstrcpyA(strPtr, "WINESTUB.FIX");
1177 }