2 * Win32 WOW Generic Thunk API
4 * Copyright 1999 Ulrich Weigand
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "wine/port.h"
27 #include "wine/winbase16.h"
36 #include "kernel_private.h"
37 #include "kernel16_private.h"
38 #include "wine/exception.h"
39 #include "wine/debug.h"
41 WINE_DEFAULT_DEBUG_CHANNEL(thunk);
42 WINE_DECLARE_DEBUG_CHANNEL(relay);
43 WINE_DECLARE_DEBUG_CHANNEL(snoop);
46 * These are the 16-bit side WOW routines. They reside in wownt16.h
47 * in the SDK; since we don't support Win16 source code anyway, I've
48 * placed them here for compilation with Wine ...
51 DWORD WINAPI GetVDMPointer32W16(SEGPTR,UINT16);
53 DWORD WINAPI LoadLibraryEx32W16(LPCSTR,DWORD,DWORD);
54 DWORD WINAPI GetProcAddress32W16(DWORD,LPCSTR);
55 DWORD WINAPI FreeLibrary32W16(DWORD);
57 #define CPEX_DEST_STDCALL 0x00000000L
58 #define CPEX_DEST_CDECL 0x80000000L
60 /* thunk for 16-bit CreateThread */
67 static DWORD CALLBACK start_thread16( LPVOID threadArgs )
69 struct thread_args args = *(struct thread_args *)threadArgs;
70 HeapFree( GetProcessHeap(), 0, threadArgs );
71 return K32WOWCallback16( (DWORD)args.proc, args.param );
77 /* symbols exported from relay16.s */
78 extern DWORD WINAPI wine_call_to_16( FARPROC16 target, DWORD cbArgs, PEXCEPTION_HANDLER handler );
79 extern void WINAPI wine_call_to_16_regs( CONTEXT86 *context, DWORD cbArgs, PEXCEPTION_HANDLER handler );
80 extern void Call16_Ret_Start();
81 extern void Call16_Ret_End();
82 extern void CallTo16_Ret();
83 extern void CALL32_CBClient_Ret();
84 extern void CALL32_CBClientEx_Ret();
85 extern void DPMI_PendingEventCheck();
86 extern void DPMI_PendingEventCheck_Cleanup();
87 extern void DPMI_PendingEventCheck_Return();
88 extern DWORD CallTo16_DataSelector;
89 extern SEGPTR CALL32_CBClient_RetAddr;
90 extern SEGPTR CALL32_CBClientEx_RetAddr;
91 extern BYTE Call16_Start;
92 extern BYTE Call16_End;
94 extern void RELAY16_InitDebugLists(void);
96 static LONG CALLBACK vectored_handler( EXCEPTION_POINTERS *ptrs );
97 static SEGPTR call16_ret_addr; /* segptr to CallTo16_Ret routine */
99 static WORD dpmi_checker_selector;
100 static DWORD dpmi_checker_offset_call;
101 static DWORD dpmi_checker_offset_cleanup;
102 static DWORD dpmi_checker_offset_return;
104 /***********************************************************************
107 BOOL WOWTHUNK_Init(void)
109 /* allocate the code selector for CallTo16 routines */
110 WORD codesel = SELECTOR_AllocBlock( (void *)Call16_Ret_Start,
111 (char *)Call16_Ret_End - (char *)Call16_Ret_Start,
112 WINE_LDT_FLAGS_CODE | WINE_LDT_FLAGS_32BIT );
113 if (!codesel) return FALSE;
115 /* Patch the return addresses for CallTo16 routines */
117 CallTo16_DataSelector = wine_get_ds();
118 call16_ret_addr = MAKESEGPTR( codesel, (char*)CallTo16_Ret - (char*)Call16_Ret_Start );
119 CALL32_CBClient_RetAddr =
120 MAKESEGPTR( codesel, (char*)CALL32_CBClient_Ret - (char*)Call16_Ret_Start );
121 CALL32_CBClientEx_RetAddr =
122 MAKESEGPTR( codesel, (char*)CALL32_CBClientEx_Ret - (char*)Call16_Ret_Start );
124 /* Prepare selector and offsets for DPMI event checking. */
125 dpmi_checker_selector = codesel;
126 dpmi_checker_offset_call =
127 (char*)DPMI_PendingEventCheck - (char*)Call16_Ret_Start;
128 dpmi_checker_offset_cleanup =
129 (char*)DPMI_PendingEventCheck_Cleanup - (char*)Call16_Ret_Start;
130 dpmi_checker_offset_return =
131 (char*)DPMI_PendingEventCheck_Return - (char*)Call16_Ret_Start;
133 if (TRACE_ON(relay) || TRACE_ON(snoop)) RELAY16_InitDebugLists();
135 /* setup emulation of protected instructions from 32-bit code (only for Win9x versions) */
136 if (GetVersion() & 0x80000000) RtlAddVectoredExceptionHandler( TRUE, vectored_handler );
141 /*************************************************************
144 * Fix a selector load that caused an exception if it's in the
147 static BOOL fix_selector( CONTEXT *context )
150 BYTE *instr = (BYTE *)context->Eip;
152 if (instr < &Call16_Start || instr >= &Call16_End) return FALSE;
155 while (*instr == 0x66 || *instr == 0x67) instr++;
159 case 0x07: /* pop es */
160 case 0x17: /* pop ss */
161 case 0x1f: /* pop ds */
163 case 0x0f: /* extended instruction */
166 case 0xa1: /* pop fs */
167 case 0xa9: /* pop gs */
176 stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
177 TRACE( "fixing up selector %x for pop instruction\n", *stack );
183 /*************************************************************
186 * Make resuming the context check for pending DPMI events
187 * before the original context is restored. This is required
188 * because DPMI events are asynchronous, they are blocked while
189 * Wine 32-bit code is being executed and we want to prevent
190 * a race when returning back to 16-bit or 32-bit DPMI context.
192 static void insert_event_check( CONTEXT *context )
194 char *stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
196 /* don't do event check while in system code */
197 if (wine_ldt_is_system(context->SegCs))
200 if(context->SegCs == dpmi_checker_selector &&
201 context->Eip >= dpmi_checker_offset_call &&
202 context->Eip <= dpmi_checker_offset_cleanup)
205 * Nested call. Stack will be preserved.
208 else if(context->SegCs == dpmi_checker_selector &&
209 context->Eip == dpmi_checker_offset_return)
212 * Nested call. We have just finished popping the fs
213 * register, lets put it back into stack.
216 stack -= sizeof(WORD);
217 *(WORD*)stack = context->SegFs;
224 * Call is not nested.
225 * Push modified registers into stack.
226 * These will be popped by the assembler stub.
229 stack -= sizeof(DWORD);
230 *(DWORD*)stack = context->EFlags;
232 stack -= sizeof(DWORD);
233 *(DWORD*)stack = context->SegCs;
235 stack -= sizeof(DWORD);
236 *(DWORD*)stack = context->Eip;
238 stack -= sizeof(WORD);
239 *(WORD*)stack = context->SegFs;
245 * Modify the context so that we jump into assembler stub.
246 * TEB access is made easier by providing the stub
247 * with the correct fs register value.
250 context->SegCs = dpmi_checker_selector;
251 context->Eip = dpmi_checker_offset_call;
252 context->SegFs = wine_get_fs();
256 /*************************************************************
259 * Handler for exceptions occurring in 16-bit code.
261 static DWORD call16_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame,
262 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher )
264 if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
266 /* unwinding: restore the stack pointer in the TEB, and leave the Win16 mutex */
267 STACK32FRAME *frame32 = (STACK32FRAME *)((char *)frame - offsetof(STACK32FRAME,frame));
268 NtCurrentTeb()->WOW32Reserved = (void *)frame32->frame16;
271 else if (record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
272 record->ExceptionCode == EXCEPTION_PRIV_INSTRUCTION)
274 if (wine_ldt_is_system(context->SegCs))
276 if (fix_selector( context )) return ExceptionContinueExecution;
281 DWORD ret = INSTR_EmulateInstruction( record, context );
284 * Insert check for pending DPMI events. Note that this
285 * check must be inserted after instructions have been
286 * emulated because the instruction emulation requires
287 * original CS:IP and the emulation may change TEB.dpmi_vif.
289 if(NtCurrentTeb()->dpmi_vif)
290 insert_event_check( context );
292 if (ret != ExceptionContinueSearch) return ret;
294 /* check for Win16 __GP handler */
295 if ((gpHandler = HasGPHandler16( MAKESEGPTR( context->SegCs, context->Eip ) )))
297 WORD *stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
298 *--stack = context->SegCs;
299 *--stack = context->Eip;
301 if (!IS_SELECTOR_32BIT(context->SegSs))
302 context->Esp = MAKELONG( LOWORD(context->Esp - 2*sizeof(WORD)),
303 HIWORD(context->Esp) );
305 context->Esp -= 2*sizeof(WORD);
307 context->SegCs = SELECTOROF( gpHandler );
308 context->Eip = OFFSETOF( gpHandler );
309 return ExceptionContinueExecution;
313 else if (record->ExceptionCode == EXCEPTION_VM86_STI)
315 insert_event_check( context );
317 return ExceptionContinueSearch;
321 /*************************************************************
324 * Handler for exceptions occurring in vm86 code.
326 static DWORD vm86_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame,
327 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher )
329 if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
330 return ExceptionContinueSearch;
332 if (record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
333 record->ExceptionCode == EXCEPTION_PRIV_INSTRUCTION)
335 return INSTR_EmulateInstruction( record, context );
338 return ExceptionContinueSearch;
342 /***********************************************************************
345 * Vectored exception handler used to emulate protected instructions
348 static LONG CALLBACK vectored_handler( EXCEPTION_POINTERS *ptrs )
350 EXCEPTION_RECORD *record = ptrs->ExceptionRecord;
351 CONTEXT *context = ptrs->ContextRecord;
353 if (wine_ldt_is_system(context->SegCs) &&
354 (record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
355 record->ExceptionCode == EXCEPTION_PRIV_INSTRUCTION))
357 if (INSTR_EmulateInstruction( record, context ) == ExceptionContinueExecution)
358 return EXCEPTION_CONTINUE_EXECUTION;
360 return EXCEPTION_CONTINUE_SEARCH;
366 BOOL WOWTHUNK_Init(void)
371 #endif /* __i386__ */
375 * 32-bit WOW routines (in WOW32, but actually forwarded to KERNEL32)
378 /**********************************************************************
379 * K32WOWGetDescriptor (KERNEL32.70)
381 BOOL WINAPI K32WOWGetDescriptor( SEGPTR segptr, LPLDT_ENTRY ldtent )
383 return GetThreadSelectorEntry( GetCurrentThread(),
384 segptr >> 16, ldtent );
387 /**********************************************************************
388 * K32WOWGetVDMPointer (KERNEL32.56)
390 LPVOID WINAPI K32WOWGetVDMPointer( DWORD vp, DWORD dwBytes, BOOL fProtectedMode )
392 /* FIXME: add size check too */
394 if ( fProtectedMode )
397 return DOSMEM_MapRealToLinear( vp );
400 /**********************************************************************
401 * K32WOWGetVDMPointerFix (KERNEL32.68)
403 LPVOID WINAPI K32WOWGetVDMPointerFix( DWORD vp, DWORD dwBytes, BOOL fProtectedMode )
406 * Hmmm. According to the docu, we should call:
408 * GlobalFix16( SELECTOROF(vp) );
410 * But this is unnecessary under Wine, as we never move global
411 * memory segments in linear memory anyway.
413 * (I'm not so sure what we are *supposed* to do if
414 * fProtectedMode is TRUE, anyway ...)
417 return K32WOWGetVDMPointer( vp, dwBytes, fProtectedMode );
420 /**********************************************************************
421 * K32WOWGetVDMPointerUnfix (KERNEL32.69)
423 VOID WINAPI K32WOWGetVDMPointerUnfix( DWORD vp )
426 * See above why we don't call:
428 * GlobalUnfix16( SELECTOROF(vp) );
433 /**********************************************************************
434 * K32WOWGlobalAlloc16 (KERNEL32.59)
436 WORD WINAPI K32WOWGlobalAlloc16( WORD wFlags, DWORD cb )
438 return (WORD)GlobalAlloc16( wFlags, cb );
441 /**********************************************************************
442 * K32WOWGlobalFree16 (KERNEL32.62)
444 WORD WINAPI K32WOWGlobalFree16( WORD hMem )
446 return (WORD)GlobalFree16( (HGLOBAL16)hMem );
449 /**********************************************************************
450 * K32WOWGlobalUnlock16 (KERNEL32.61)
452 BOOL WINAPI K32WOWGlobalUnlock16( WORD hMem )
454 return (BOOL)GlobalUnlock16( (HGLOBAL16)hMem );
457 /**********************************************************************
458 * K32WOWGlobalAllocLock16 (KERNEL32.63)
460 DWORD WINAPI K32WOWGlobalAllocLock16( WORD wFlags, DWORD cb, WORD *phMem )
462 WORD hMem = K32WOWGlobalAlloc16( wFlags, cb );
463 if (phMem) *phMem = hMem;
465 return K32WOWGlobalLock16( hMem );
468 /**********************************************************************
469 * K32WOWGlobalLockSize16 (KERNEL32.65)
471 DWORD WINAPI K32WOWGlobalLockSize16( WORD hMem, PDWORD pcb )
474 *pcb = GlobalSize16( (HGLOBAL16)hMem );
476 return K32WOWGlobalLock16( hMem );
479 /**********************************************************************
480 * K32WOWGlobalUnlockFree16 (KERNEL32.64)
482 WORD WINAPI K32WOWGlobalUnlockFree16( DWORD vpMem )
484 if ( !K32WOWGlobalUnlock16( HIWORD(vpMem) ) )
487 return K32WOWGlobalFree16( HIWORD(vpMem) );
491 /**********************************************************************
492 * K32WOWYield16 (KERNEL32.66)
494 VOID WINAPI K32WOWYield16( void )
497 * This does the right thing for both Win16 and Win32 tasks.
498 * More or less, at least :-/
503 /**********************************************************************
504 * K32WOWDirectedYield16 (KERNEL32.67)
506 VOID WINAPI K32WOWDirectedYield16( WORD htask16 )
509 * Argh. Our scheduler doesn't like DirectedYield by Win32
510 * tasks at all. So we do hope that this routine is indeed
511 * only ever called by Win16 tasks that have thunked up ...
513 DirectedYield16( (HTASK16)htask16 );
517 /***********************************************************************
518 * K32WOWHandle32 (KERNEL32.57)
520 HANDLE WINAPI K32WOWHandle32( WORD handle, WOW_HANDLE_TYPE type )
531 case WOW_TYPE_HBITMAP:
532 case WOW_TYPE_HBRUSH:
533 case WOW_TYPE_HPALETTE:
535 case WOW_TYPE_HACCEL:
536 return (HANDLE)(ULONG_PTR)handle;
538 case WOW_TYPE_HMETAFILE:
539 FIXME( "conversion of metafile handles not supported yet\n" );
540 return (HANDLE)(ULONG_PTR)handle;
543 return ((TDB *)GlobalLock16(handle))->teb->ClientId.UniqueThread;
545 case WOW_TYPE_FULLHWND:
546 FIXME( "conversion of full window handles not supported yet\n" );
547 return (HANDLE)(ULONG_PTR)handle;
550 ERR( "handle 0x%04x of unknown type %d\n", handle, type );
551 return (HANDLE)(ULONG_PTR)handle;
555 /***********************************************************************
556 * K32WOWHandle16 (KERNEL32.58)
558 WORD WINAPI K32WOWHandle16( HANDLE handle, WOW_HANDLE_TYPE type )
569 case WOW_TYPE_HBITMAP:
570 case WOW_TYPE_HBRUSH:
571 case WOW_TYPE_HPALETTE:
573 case WOW_TYPE_HACCEL:
574 case WOW_TYPE_FULLHWND:
575 if ( HIWORD(handle ) )
576 ERR( "handle %p of type %d has non-zero HIWORD\n", handle, type );
577 return LOWORD(handle);
579 case WOW_TYPE_HMETAFILE:
580 FIXME( "conversion of metafile handles not supported yet\n" );
581 return LOWORD(handle);
584 return TASK_GetTaskFromThread( (DWORD)handle );
587 ERR( "handle %p of unknown type %d\n", handle, type );
588 return LOWORD(handle);
592 /**********************************************************************
593 * K32WOWCallback16Ex (KERNEL32.55)
595 BOOL WINAPI K32WOWCallback16Ex( DWORD vpfn16, DWORD dwFlags,
596 DWORD cbArgs, LPVOID pArgs, LPDWORD pdwRetCode )
600 * Arguments must be prepared in the correct order by the caller
601 * (both for PASCAL and CDECL calling convention), so we simply
602 * copy them to the 16-bit stack ...
604 char *stack = (char *)CURRENT_STACK16 - cbArgs;
606 memcpy( stack, pArgs, cbArgs );
608 if (dwFlags & (WCB16_REGS|WCB16_REGS_LONG))
610 CONTEXT *context = (CONTEXT *)pdwRetCode;
614 DWORD count = cbArgs / sizeof(WORD);
615 WORD * wstack = (WORD *)stack;
617 DPRINTF("%04lx:CallTo16(func=%04lx:%04x,ds=%04lx",
618 GetCurrentThreadId(),
619 context->SegCs, LOWORD(context->Eip), context->SegDs );
620 while (count) DPRINTF( ",%04x", wstack[--count] );
621 DPRINTF(") ss:sp=%04x:%04x",
622 SELECTOROF(NtCurrentTeb()->WOW32Reserved), OFFSETOF(NtCurrentTeb()->WOW32Reserved) );
623 DPRINTF(" ax=%04x bx=%04x cx=%04x dx=%04x si=%04x di=%04x bp=%04x es=%04x fs=%04x\n",
624 (WORD)context->Eax, (WORD)context->Ebx, (WORD)context->Ecx,
625 (WORD)context->Edx, (WORD)context->Esi, (WORD)context->Edi,
626 (WORD)context->Ebp, (WORD)context->SegEs, (WORD)context->SegFs );
627 SYSLEVEL_CheckNotLevel( 2 );
630 if (context->EFlags & 0x00020000) /* v86 mode */
632 EXCEPTION_REGISTRATION_RECORD frame;
633 frame.Handler = vm86_handler;
634 __wine_push_frame( &frame );
635 __wine_enter_vm86( context );
636 __wine_pop_frame( &frame );
640 /* push return address */
641 if (dwFlags & WCB16_REGS_LONG)
643 stack -= sizeof(DWORD);
644 *((DWORD *)stack) = HIWORD(call16_ret_addr);
645 stack -= sizeof(DWORD);
646 *((DWORD *)stack) = LOWORD(call16_ret_addr);
647 cbArgs += 2 * sizeof(DWORD);
651 stack -= sizeof(SEGPTR);
652 *((SEGPTR *)stack) = call16_ret_addr;
653 cbArgs += sizeof(SEGPTR);
657 * Start call by checking for pending events.
658 * Note that wine_call_to_16_regs overwrites context stack
659 * pointer so we may modify it here without a problem.
661 if (NtCurrentTeb()->dpmi_vif)
663 context->SegSs = wine_get_ds();
664 context->Esp = (DWORD)stack;
665 insert_event_check( context );
666 cbArgs += (DWORD)stack - context->Esp;
670 wine_call_to_16_regs( context, cbArgs, call16_handler );
676 DPRINTF("%04lx:RetFrom16() ss:sp=%04x:%04x ",
677 GetCurrentThreadId(), SELECTOROF(NtCurrentTeb()->WOW32Reserved),
678 OFFSETOF(NtCurrentTeb()->WOW32Reserved));
679 DPRINTF(" ax=%04x bx=%04x cx=%04x dx=%04x bp=%04x sp=%04x\n",
680 (WORD)context->Eax, (WORD)context->Ebx, (WORD)context->Ecx,
681 (WORD)context->Edx, (WORD)context->Ebp, (WORD)context->Esp );
682 SYSLEVEL_CheckNotLevel( 2 );
691 DWORD count = cbArgs / sizeof(WORD);
692 WORD * wstack = (WORD *)stack;
694 DPRINTF("%04lx:CallTo16(func=%04x:%04x,ds=%04x",
695 GetCurrentThreadId(), HIWORD(vpfn16), LOWORD(vpfn16),
696 SELECTOROF(NtCurrentTeb()->WOW32Reserved) );
697 while (count) DPRINTF( ",%04x", wstack[--count] );
698 DPRINTF(") ss:sp=%04x:%04x\n",
699 SELECTOROF(NtCurrentTeb()->WOW32Reserved), OFFSETOF(NtCurrentTeb()->WOW32Reserved) );
700 SYSLEVEL_CheckNotLevel( 2 );
703 /* push return address */
704 stack -= sizeof(SEGPTR);
705 *((SEGPTR *)stack) = call16_ret_addr;
706 cbArgs += sizeof(SEGPTR);
709 * Actually, we should take care whether the called routine cleans up
710 * its stack or not. Fortunately, our wine_call_to_16 core doesn't rely on
711 * the callee to do so; after the routine has returned, the 16-bit
712 * stack pointer is always reset to the position it had before.
715 ret = wine_call_to_16( (FARPROC16)vpfn16, cbArgs, call16_handler );
716 if (pdwRetCode) *pdwRetCode = ret;
721 DPRINTF("%04lx:RetFrom16() ss:sp=%04x:%04x retval=%08lx\n",
722 GetCurrentThreadId(), SELECTOROF(NtCurrentTeb()->WOW32Reserved),
723 OFFSETOF(NtCurrentTeb()->WOW32Reserved), ret);
724 SYSLEVEL_CheckNotLevel( 2 );
728 assert(0); /* cannot call to 16-bit on non-Intel architectures */
729 #endif /* __i386__ */
731 return TRUE; /* success */
734 /**********************************************************************
735 * K32WOWCallback16 (KERNEL32.54)
737 DWORD WINAPI K32WOWCallback16( DWORD vpfn16, DWORD dwParam )
741 if ( !K32WOWCallback16Ex( vpfn16, WCB16_PASCAL,
742 sizeof(DWORD), &dwParam, &ret ) )
750 * 16-bit WOW routines (in KERNEL)
753 /**********************************************************************
754 * GetVDMPointer32W (KERNEL.516)
756 DWORD WINAPI GetVDMPointer32W16( SEGPTR vp, UINT16 fMode )
758 GlobalPageLock16(GlobalHandle16(SELECTOROF(vp)));
759 return (DWORD)K32WOWGetVDMPointer( vp, 0, (DWORD)fMode );
762 /***********************************************************************
763 * LoadLibraryEx32W (KERNEL.513)
765 DWORD WINAPI LoadLibraryEx32W16( LPCSTR lpszLibFile, DWORD hFile, DWORD dwFlags )
774 SetLastError(ERROR_INVALID_PARAMETER);
778 /* if the file cannot be found, call LoadLibraryExA anyway, since it might be
779 a builtin module. This case is handled in MODULE_LoadLibraryExA */
781 if ((p = strrchr( lpszLibFile, '.' )) && !strchr( p, '\\' )) /* got an extension */
783 if (OpenFile16( lpszLibFile, &ofs, OF_EXIST ) != HFILE_ERROR16)
784 lpszLibFile = ofs.szPathName;
788 char buffer[MAX_PATH+4];
789 strcpy( buffer, lpszLibFile );
790 strcat( buffer, ".dll" );
791 if (OpenFile16( buffer, &ofs, OF_EXIST ) != HFILE_ERROR16)
792 lpszLibFile = ofs.szPathName;
795 ReleaseThunkLock( &mutex_count );
796 hModule = LoadLibraryExA( lpszLibFile, (HANDLE)hFile, dwFlags );
797 RestoreThunkLock( mutex_count );
799 return (DWORD)hModule;
802 /***********************************************************************
803 * GetProcAddress32W (KERNEL.515)
805 DWORD WINAPI GetProcAddress32W16( DWORD hModule, LPCSTR lpszProc )
807 return (DWORD)GetProcAddress( (HMODULE)hModule, lpszProc );
810 /***********************************************************************
811 * FreeLibrary32W (KERNEL.514)
813 DWORD WINAPI FreeLibrary32W16( DWORD hLibModule )
818 ReleaseThunkLock( &mutex_count );
819 retv = FreeLibrary( (HMODULE)hLibModule );
820 RestoreThunkLock( mutex_count );
825 /**********************************************************************
828 static DWORD WOW_CallProc32W16( FARPROC proc32, DWORD nrofargs, DWORD *args )
833 ReleaseThunkLock( &mutex_count );
836 * FIXME: If ( nrofargs & CPEX_DEST_CDECL ) != 0, we should call a
837 * 32-bit CDECL routine ...
840 if (!proc32) ret = 0;
841 else switch (nrofargs)
843 case 0: ret = proc32();
845 case 1: ret = proc32(args[0]);
847 case 2: ret = proc32(args[0],args[1]);
849 case 3: ret = proc32(args[0],args[1],args[2]);
851 case 4: ret = proc32(args[0],args[1],args[2],args[3]);
853 case 5: ret = proc32(args[0],args[1],args[2],args[3],args[4]);
855 case 6: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5]);
857 case 7: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
859 case 8: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
861 case 9: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8]);
863 case 10:ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9]);
865 case 11:ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9],args[10]);
867 case 12:ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9],args[10],args[11]);
869 case 13:ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9],args[10],args[11],args[12]);
871 case 14:ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9],args[10],args[11],args[12],args[13]);
873 case 15:ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9],args[10],args[11],args[12],args[13],args[14]);
876 /* FIXME: should go up to 32 arguments */
877 ERR("Unsupported number of arguments %ld, please report.\n",nrofargs);
882 RestoreThunkLock( mutex_count );
884 TRACE("returns %08lx\n",ret);
888 /**********************************************************************
889 * CallProc32W (KERNEL.517)
891 DWORD WINAPIV CallProc32W16( DWORD nrofargs, DWORD argconvmask, FARPROC proc32, VA_LIST16 valist )
896 TRACE("(%ld,%ld,%p args[",nrofargs,argconvmask,proc32);
898 for (i=0;i<nrofargs;i++)
900 if (argconvmask & (1<<i))
902 SEGPTR ptr = VA_ARG16( valist, SEGPTR );
903 /* pascal convention, have to reverse the arguments order */
904 args[nrofargs - i - 1] = (DWORD)MapSL(ptr);
905 TRACE("%08lx(%p),",ptr,MapSL(ptr));
909 DWORD arg = VA_ARG16( valist, DWORD );
910 /* pascal convention, have to reverse the arguments order */
911 args[nrofargs - i - 1] = arg;
917 /* POP nrofargs DWORD arguments and 3 DWORD parameters */
918 stack16_pop( (3 + nrofargs) * sizeof(DWORD) );
920 return WOW_CallProc32W16( proc32, nrofargs, args );
923 /**********************************************************************
924 * _CallProcEx32W (KERNEL.518)
926 DWORD WINAPIV CallProcEx32W16( DWORD nrofargs, DWORD argconvmask, FARPROC proc32, VA_LIST16 valist )
931 TRACE("(%ld,%ld,%p args[",nrofargs,argconvmask,proc32);
933 for (i=0;i<nrofargs;i++)
935 if (argconvmask & (1<<i))
937 SEGPTR ptr = VA_ARG16( valist, SEGPTR );
938 args[i] = (DWORD)MapSL(ptr);
939 TRACE("%08lx(%p),",ptr,MapSL(ptr));
943 DWORD arg = VA_ARG16( valist, DWORD );
949 return WOW_CallProc32W16( proc32, nrofargs, args );
953 /**********************************************************************
954 * WOW16Call (KERNEL.500)
959 DWORD WINAPIV WOW16Call(WORD x, WORD y, WORD z, VA_LIST16 args)
963 FIXME("(0x%04x,0x%04x,%d),calling (",x,y,z);
965 for (i=0;i<x/2;i++) {
966 WORD a = VA_ARG16(args,WORD);
969 calladdr = VA_ARG16(args,DWORD);
970 stack16_pop( 3*sizeof(WORD) + x + sizeof(DWORD) );
971 DPRINTF(") calling address was 0x%08lx\n",calladdr);
976 /***********************************************************************
977 * CreateThread16 (KERNEL.441)
979 HANDLE WINAPI CreateThread16( SECURITY_ATTRIBUTES *sa, DWORD stack,
980 FARPROC16 start, SEGPTR param,
981 DWORD flags, LPDWORD id )
983 struct thread_args *args = HeapAlloc( GetProcessHeap(), 0, sizeof(*args) );
984 if (!args) return INVALID_HANDLE_VALUE;
987 return CreateThread( sa, stack, start_thread16, args, flags, id );