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"
37 #include "stackframe.h"
38 #include "kernel_private.h"
39 #include "wine/exception.h"
40 #include "wine/debug.h"
42 WINE_DEFAULT_DEBUG_CHANNEL(thunk);
43 WINE_DECLARE_DEBUG_CHANNEL(relay);
44 WINE_DECLARE_DEBUG_CHANNEL(snoop);
47 * These are the 16-bit side WOW routines. They reside in wownt16.h
48 * in the SDK; since we don't support Win16 source code anyway, I've
49 * placed them here for compilation with Wine ...
52 DWORD WINAPI GetVDMPointer32W16(SEGPTR,UINT16);
54 DWORD WINAPI LoadLibraryEx32W16(LPCSTR,DWORD,DWORD);
55 DWORD WINAPI GetProcAddress32W16(DWORD,LPCSTR);
56 DWORD WINAPI FreeLibrary32W16(DWORD);
58 #define CPEX_DEST_STDCALL 0x00000000L
59 #define CPEX_DEST_CDECL 0x80000000L
61 /* thunk for 16-bit CreateThread */
68 static DWORD CALLBACK start_thread16( LPVOID threadArgs )
70 struct thread_args args = *(struct thread_args *)threadArgs;
71 HeapFree( GetProcessHeap(), 0, threadArgs );
72 return K32WOWCallback16( (DWORD)args.proc, args.param );
78 /* symbols exported from relay16.s */
79 extern DWORD WINAPI wine_call_to_16( FARPROC16 target, DWORD cbArgs, PEXCEPTION_HANDLER handler );
80 extern void WINAPI wine_call_to_16_regs( CONTEXT86 *context, DWORD cbArgs, PEXCEPTION_HANDLER handler );
81 extern void Call16_Ret_Start();
82 extern void Call16_Ret_End();
83 extern void CallTo16_Ret();
84 extern void CALL32_CBClient_Ret();
85 extern void CALL32_CBClientEx_Ret();
86 extern void DPMI_PendingEventCheck();
87 extern void DPMI_PendingEventCheck_Cleanup();
88 extern void DPMI_PendingEventCheck_Return();
89 extern DWORD CallTo16_DataSelector;
90 extern SEGPTR CALL32_CBClient_RetAddr;
91 extern SEGPTR CALL32_CBClientEx_RetAddr;
92 extern BYTE Call16_Start;
93 extern BYTE Call16_End;
95 extern void RELAY16_InitDebugLists(void);
97 static LONG CALLBACK vectored_handler( EXCEPTION_POINTERS *ptrs );
98 static SEGPTR call16_ret_addr; /* segptr to CallTo16_Ret routine */
100 static WORD dpmi_checker_selector;
101 static DWORD dpmi_checker_offset_call;
102 static DWORD dpmi_checker_offset_cleanup;
103 static DWORD dpmi_checker_offset_return;
105 /***********************************************************************
108 BOOL WOWTHUNK_Init(void)
110 /* allocate the code selector for CallTo16 routines */
111 WORD codesel = SELECTOR_AllocBlock( (void *)Call16_Ret_Start,
112 (char *)Call16_Ret_End - (char *)Call16_Ret_Start,
113 WINE_LDT_FLAGS_CODE | WINE_LDT_FLAGS_32BIT );
114 if (!codesel) return FALSE;
116 /* Patch the return addresses for CallTo16 routines */
118 CallTo16_DataSelector = wine_get_ds();
119 call16_ret_addr = MAKESEGPTR( codesel, (char*)CallTo16_Ret - (char*)Call16_Ret_Start );
120 CALL32_CBClient_RetAddr =
121 MAKESEGPTR( codesel, (char*)CALL32_CBClient_Ret - (char*)Call16_Ret_Start );
122 CALL32_CBClientEx_RetAddr =
123 MAKESEGPTR( codesel, (char*)CALL32_CBClientEx_Ret - (char*)Call16_Ret_Start );
125 /* Prepare selector and offsets for DPMI event checking. */
126 dpmi_checker_selector = codesel;
127 dpmi_checker_offset_call =
128 (char*)DPMI_PendingEventCheck - (char*)Call16_Ret_Start;
129 dpmi_checker_offset_cleanup =
130 (char*)DPMI_PendingEventCheck_Cleanup - (char*)Call16_Ret_Start;
131 dpmi_checker_offset_return =
132 (char*)DPMI_PendingEventCheck_Return - (char*)Call16_Ret_Start;
134 if (TRACE_ON(relay) || TRACE_ON(snoop)) RELAY16_InitDebugLists();
136 /* setup emulation of protected instructions from 32-bit code (only for Win9x versions) */
137 if (GetVersion() & 0x80000000) RtlAddVectoredExceptionHandler( TRUE, vectored_handler );
142 /*************************************************************
145 * Fix a selector load that caused an exception if it's in the
148 static BOOL fix_selector( CONTEXT *context )
151 BYTE *instr = (BYTE *)context->Eip;
153 if (instr < &Call16_Start || instr >= &Call16_End) return FALSE;
156 while (*instr == 0x66 || *instr == 0x67) instr++;
160 case 0x07: /* pop es */
161 case 0x17: /* pop ss */
162 case 0x1f: /* pop ds */
164 case 0x0f: /* extended instruction */
167 case 0xa1: /* pop fs */
168 case 0xa9: /* pop gs */
177 stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
178 TRACE( "fixing up selector %x for pop instruction\n", *stack );
184 /*************************************************************
187 * Make resuming the context check for pending DPMI events
188 * before the original context is restored. This is required
189 * because DPMI events are asynchronous, they are blocked while
190 * Wine 32-bit code is being executed and we want to prevent
191 * a race when returning back to 16-bit or 32-bit DPMI context.
193 static void insert_event_check( CONTEXT *context )
195 char *stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
197 /* don't do event check while in system code */
198 if (wine_ldt_is_system(context->SegCs))
201 if(context->SegCs == dpmi_checker_selector &&
202 context->Eip >= dpmi_checker_offset_call &&
203 context->Eip <= dpmi_checker_offset_cleanup)
206 * Nested call. Stack will be preserved.
209 else if(context->SegCs == dpmi_checker_selector &&
210 context->Eip == dpmi_checker_offset_return)
213 * Nested call. We have just finished popping the fs
214 * register, lets put it back into stack.
217 stack -= sizeof(WORD);
218 *(WORD*)stack = context->SegFs;
225 * Call is not nested.
226 * Push modified registers into stack.
227 * These will be popped by the assembler stub.
230 stack -= sizeof(DWORD);
231 *(DWORD*)stack = context->EFlags;
233 stack -= sizeof(DWORD);
234 *(DWORD*)stack = context->SegCs;
236 stack -= sizeof(DWORD);
237 *(DWORD*)stack = context->Eip;
239 stack -= sizeof(WORD);
240 *(WORD*)stack = context->SegFs;
246 * Modify the context so that we jump into assembler stub.
247 * TEB access is made easier by providing the stub
248 * with the correct fs register value.
251 context->SegCs = dpmi_checker_selector;
252 context->Eip = dpmi_checker_offset_call;
253 context->SegFs = wine_get_fs();
257 /*************************************************************
260 * Handler for exceptions occurring in 16-bit code.
262 static DWORD call16_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame,
263 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher )
265 if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
267 /* unwinding: restore the stack pointer in the TEB, and leave the Win16 mutex */
268 STACK32FRAME *frame32 = (STACK32FRAME *)((char *)frame - offsetof(STACK32FRAME,frame));
269 NtCurrentTeb()->cur_stack = frame32->frame16;
272 else if (record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
273 record->ExceptionCode == EXCEPTION_PRIV_INSTRUCTION)
275 if (wine_ldt_is_system(context->SegCs))
277 if (fix_selector( context )) return ExceptionContinueExecution;
282 DWORD ret = INSTR_EmulateInstruction( record, context );
285 * Insert check for pending DPMI events. Note that this
286 * check must be inserted after instructions have been
287 * emulated because the instruction emulation requires
288 * original CS:IP and the emulation may change TEB.dpmi_vif.
290 if(NtCurrentTeb()->dpmi_vif)
291 insert_event_check( context );
293 if (ret != ExceptionContinueSearch) return ret;
295 /* check for Win16 __GP handler */
296 if ((gpHandler = HasGPHandler16( MAKESEGPTR( context->SegCs, context->Eip ) )))
298 WORD *stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
299 *--stack = context->SegCs;
300 *--stack = context->Eip;
302 if (!IS_SELECTOR_32BIT(context->SegSs))
303 context->Esp = MAKELONG( LOWORD(context->Esp - 2*sizeof(WORD)),
304 HIWORD(context->Esp) );
306 context->Esp -= 2*sizeof(WORD);
308 context->SegCs = SELECTOROF( gpHandler );
309 context->Eip = OFFSETOF( gpHandler );
310 return ExceptionContinueExecution;
314 else if (record->ExceptionCode == EXCEPTION_VM86_STI)
316 insert_event_check( context );
318 return ExceptionContinueSearch;
322 /*************************************************************
325 * Handler for exceptions occurring in vm86 code.
327 static DWORD vm86_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame,
328 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher )
330 if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
331 return ExceptionContinueSearch;
333 if (record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
334 record->ExceptionCode == EXCEPTION_PRIV_INSTRUCTION)
336 return INSTR_EmulateInstruction( record, context );
339 return ExceptionContinueSearch;
343 /***********************************************************************
346 * Vectored exception handler used to emulate protected instructions
349 static LONG CALLBACK vectored_handler( EXCEPTION_POINTERS *ptrs )
351 EXCEPTION_RECORD *record = ptrs->ExceptionRecord;
352 CONTEXT *context = ptrs->ContextRecord;
354 if (wine_ldt_is_system(context->SegCs) &&
355 (record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
356 record->ExceptionCode == EXCEPTION_PRIV_INSTRUCTION))
358 if (INSTR_EmulateInstruction( record, context ) == ExceptionContinueExecution)
359 return EXCEPTION_CONTINUE_EXECUTION;
361 return EXCEPTION_CONTINUE_SEARCH;
367 BOOL WOWTHUNK_Init(void)
372 #endif /* __i386__ */
376 * 32-bit WOW routines (in WOW32, but actually forwarded to KERNEL32)
379 /**********************************************************************
380 * K32WOWGetDescriptor (KERNEL32.70)
382 BOOL WINAPI K32WOWGetDescriptor( SEGPTR segptr, LPLDT_ENTRY ldtent )
384 return GetThreadSelectorEntry( GetCurrentThread(),
385 segptr >> 16, ldtent );
388 /**********************************************************************
389 * K32WOWGetVDMPointer (KERNEL32.56)
391 LPVOID WINAPI K32WOWGetVDMPointer( DWORD vp, DWORD dwBytes, BOOL fProtectedMode )
393 /* FIXME: add size check too */
395 if ( fProtectedMode )
398 return DOSMEM_MapRealToLinear( vp );
401 /**********************************************************************
402 * K32WOWGetVDMPointerFix (KERNEL32.68)
404 LPVOID WINAPI K32WOWGetVDMPointerFix( DWORD vp, DWORD dwBytes, BOOL fProtectedMode )
407 * Hmmm. According to the docu, we should call:
409 * GlobalFix16( SELECTOROF(vp) );
411 * But this is unnecessary under Wine, as we never move global
412 * memory segments in linear memory anyway.
414 * (I'm not so sure what we are *supposed* to do if
415 * fProtectedMode is TRUE, anyway ...)
418 return K32WOWGetVDMPointer( vp, dwBytes, fProtectedMode );
421 /**********************************************************************
422 * K32WOWGetVDMPointerUnfix (KERNEL32.69)
424 VOID WINAPI K32WOWGetVDMPointerUnfix( DWORD vp )
427 * See above why we don't call:
429 * GlobalUnfix16( SELECTOROF(vp) );
434 /**********************************************************************
435 * K32WOWGlobalAlloc16 (KERNEL32.59)
437 WORD WINAPI K32WOWGlobalAlloc16( WORD wFlags, DWORD cb )
439 return (WORD)GlobalAlloc16( wFlags, cb );
442 /**********************************************************************
443 * K32WOWGlobalFree16 (KERNEL32.62)
445 WORD WINAPI K32WOWGlobalFree16( WORD hMem )
447 return (WORD)GlobalFree16( (HGLOBAL16)hMem );
450 /**********************************************************************
451 * K32WOWGlobalUnlock16 (KERNEL32.61)
453 BOOL WINAPI K32WOWGlobalUnlock16( WORD hMem )
455 return (BOOL)GlobalUnlock16( (HGLOBAL16)hMem );
458 /**********************************************************************
459 * K32WOWGlobalAllocLock16 (KERNEL32.63)
461 DWORD WINAPI K32WOWGlobalAllocLock16( WORD wFlags, DWORD cb, WORD *phMem )
463 WORD hMem = K32WOWGlobalAlloc16( wFlags, cb );
464 if (phMem) *phMem = hMem;
466 return K32WOWGlobalLock16( hMem );
469 /**********************************************************************
470 * K32WOWGlobalLockSize16 (KERNEL32.65)
472 DWORD WINAPI K32WOWGlobalLockSize16( WORD hMem, PDWORD pcb )
475 *pcb = GlobalSize16( (HGLOBAL16)hMem );
477 return K32WOWGlobalLock16( hMem );
480 /**********************************************************************
481 * K32WOWGlobalUnlockFree16 (KERNEL32.64)
483 WORD WINAPI K32WOWGlobalUnlockFree16( DWORD vpMem )
485 if ( !K32WOWGlobalUnlock16( HIWORD(vpMem) ) )
488 return K32WOWGlobalFree16( HIWORD(vpMem) );
492 /**********************************************************************
493 * K32WOWYield16 (KERNEL32.66)
495 VOID WINAPI K32WOWYield16( void )
498 * This does the right thing for both Win16 and Win32 tasks.
499 * More or less, at least :-/
504 /**********************************************************************
505 * K32WOWDirectedYield16 (KERNEL32.67)
507 VOID WINAPI K32WOWDirectedYield16( WORD htask16 )
510 * Argh. Our scheduler doesn't like DirectedYield by Win32
511 * tasks at all. So we do hope that this routine is indeed
512 * only ever called by Win16 tasks that have thunked up ...
514 DirectedYield16( (HTASK16)htask16 );
518 /***********************************************************************
519 * K32WOWHandle32 (KERNEL32.57)
521 HANDLE WINAPI K32WOWHandle32( WORD handle, WOW_HANDLE_TYPE type )
532 case WOW_TYPE_HBITMAP:
533 case WOW_TYPE_HBRUSH:
534 case WOW_TYPE_HPALETTE:
536 case WOW_TYPE_HACCEL:
537 return (HANDLE)(ULONG_PTR)handle;
539 case WOW_TYPE_HMETAFILE:
540 FIXME( "conversion of metafile handles not supported yet\n" );
541 return (HANDLE)(ULONG_PTR)handle;
544 return ((TDB *)GlobalLock16(handle))->teb->ClientId.UniqueThread;
546 case WOW_TYPE_FULLHWND:
547 FIXME( "conversion of full window handles not supported yet\n" );
548 return (HANDLE)(ULONG_PTR)handle;
551 ERR( "handle 0x%04x of unknown type %d\n", handle, type );
552 return (HANDLE)(ULONG_PTR)handle;
556 /***********************************************************************
557 * K32WOWHandle16 (KERNEL32.58)
559 WORD WINAPI K32WOWHandle16( HANDLE handle, WOW_HANDLE_TYPE type )
570 case WOW_TYPE_HBITMAP:
571 case WOW_TYPE_HBRUSH:
572 case WOW_TYPE_HPALETTE:
574 case WOW_TYPE_HACCEL:
575 case WOW_TYPE_FULLHWND:
576 if ( HIWORD(handle ) )
577 ERR( "handle %p of type %d has non-zero HIWORD\n", handle, type );
578 return LOWORD(handle);
580 case WOW_TYPE_HMETAFILE:
581 FIXME( "conversion of metafile handles not supported yet\n" );
582 return LOWORD(handle);
585 return TASK_GetTaskFromThread( (DWORD)handle );
588 ERR( "handle %p of unknown type %d\n", handle, type );
589 return LOWORD(handle);
593 /**********************************************************************
594 * K32WOWCallback16Ex (KERNEL32.55)
596 BOOL WINAPI K32WOWCallback16Ex( DWORD vpfn16, DWORD dwFlags,
597 DWORD cbArgs, LPVOID pArgs, LPDWORD pdwRetCode )
601 * Arguments must be prepared in the correct order by the caller
602 * (both for PASCAL and CDECL calling convention), so we simply
603 * copy them to the 16-bit stack ...
605 char *stack = (char *)CURRENT_STACK16 - cbArgs;
607 memcpy( stack, pArgs, cbArgs );
609 if (dwFlags & (WCB16_REGS|WCB16_REGS_LONG))
611 CONTEXT *context = (CONTEXT *)pdwRetCode;
615 DWORD count = cbArgs / sizeof(WORD);
616 WORD * wstack = (WORD *)stack;
618 DPRINTF("%04lx:CallTo16(func=%04lx:%04x,ds=%04lx",
619 GetCurrentThreadId(),
620 context->SegCs, LOWORD(context->Eip), context->SegDs );
621 while (count) DPRINTF( ",%04x", wstack[--count] );
622 DPRINTF(") ss:sp=%04x:%04x",
623 SELECTOROF(NtCurrentTeb()->cur_stack), OFFSETOF(NtCurrentTeb()->cur_stack) );
624 DPRINTF(" ax=%04x bx=%04x cx=%04x dx=%04x si=%04x di=%04x bp=%04x es=%04x fs=%04x\n",
625 (WORD)context->Eax, (WORD)context->Ebx, (WORD)context->Ecx,
626 (WORD)context->Edx, (WORD)context->Esi, (WORD)context->Edi,
627 (WORD)context->Ebp, (WORD)context->SegEs, (WORD)context->SegFs );
628 SYSLEVEL_CheckNotLevel( 2 );
631 if (context->EFlags & 0x00020000) /* v86 mode */
633 EXCEPTION_REGISTRATION_RECORD frame;
634 frame.Handler = vm86_handler;
635 __wine_push_frame( &frame );
636 __wine_enter_vm86( context );
637 __wine_pop_frame( &frame );
641 /* push return address */
642 if (dwFlags & WCB16_REGS_LONG)
644 stack -= sizeof(DWORD);
645 *((DWORD *)stack) = HIWORD(call16_ret_addr);
646 stack -= sizeof(DWORD);
647 *((DWORD *)stack) = LOWORD(call16_ret_addr);
648 cbArgs += 2 * sizeof(DWORD);
652 stack -= sizeof(SEGPTR);
653 *((SEGPTR *)stack) = call16_ret_addr;
654 cbArgs += sizeof(SEGPTR);
658 * Start call by checking for pending events.
659 * Note that wine_call_to_16_regs overwrites context stack
660 * pointer so we may modify it here without a problem.
662 if (NtCurrentTeb()->dpmi_vif)
664 context->SegSs = wine_get_ds();
665 context->Esp = (DWORD)stack;
666 insert_event_check( context );
667 cbArgs += (DWORD)stack - context->Esp;
671 wine_call_to_16_regs( context, cbArgs, call16_handler );
677 DPRINTF("%04lx:RetFrom16() ss:sp=%04x:%04x ",
678 GetCurrentThreadId(), SELECTOROF(NtCurrentTeb()->cur_stack),
679 OFFSETOF(NtCurrentTeb()->cur_stack));
680 DPRINTF(" ax=%04x bx=%04x cx=%04x dx=%04x bp=%04x sp=%04x\n",
681 (WORD)context->Eax, (WORD)context->Ebx, (WORD)context->Ecx,
682 (WORD)context->Edx, (WORD)context->Ebp, (WORD)context->Esp );
683 SYSLEVEL_CheckNotLevel( 2 );
692 DWORD count = cbArgs / sizeof(WORD);
693 WORD * wstack = (WORD *)stack;
695 DPRINTF("%04lx:CallTo16(func=%04x:%04x,ds=%04x",
696 GetCurrentThreadId(), HIWORD(vpfn16), LOWORD(vpfn16),
697 SELECTOROF(NtCurrentTeb()->cur_stack) );
698 while (count) DPRINTF( ",%04x", wstack[--count] );
699 DPRINTF(") ss:sp=%04x:%04x\n",
700 SELECTOROF(NtCurrentTeb()->cur_stack), OFFSETOF(NtCurrentTeb()->cur_stack) );
701 SYSLEVEL_CheckNotLevel( 2 );
704 /* push return address */
705 stack -= sizeof(SEGPTR);
706 *((SEGPTR *)stack) = call16_ret_addr;
707 cbArgs += sizeof(SEGPTR);
710 * Actually, we should take care whether the called routine cleans up
711 * its stack or not. Fortunately, our wine_call_to_16 core doesn't rely on
712 * the callee to do so; after the routine has returned, the 16-bit
713 * stack pointer is always reset to the position it had before.
716 ret = wine_call_to_16( (FARPROC16)vpfn16, cbArgs, call16_handler );
717 if (pdwRetCode) *pdwRetCode = ret;
722 DPRINTF("%04lx:RetFrom16() ss:sp=%04x:%04x retval=%08lx\n",
723 GetCurrentThreadId(), SELECTOROF(NtCurrentTeb()->cur_stack),
724 OFFSETOF(NtCurrentTeb()->cur_stack), ret);
725 SYSLEVEL_CheckNotLevel( 2 );
729 assert(0); /* cannot call to 16-bit on non-Intel architectures */
730 #endif /* __i386__ */
732 return TRUE; /* success */
735 /**********************************************************************
736 * K32WOWCallback16 (KERNEL32.54)
738 DWORD WINAPI K32WOWCallback16( DWORD vpfn16, DWORD dwParam )
742 if ( !K32WOWCallback16Ex( vpfn16, WCB16_PASCAL,
743 sizeof(DWORD), &dwParam, &ret ) )
751 * 16-bit WOW routines (in KERNEL)
754 /**********************************************************************
755 * GetVDMPointer32W (KERNEL.516)
757 DWORD WINAPI GetVDMPointer32W16( SEGPTR vp, UINT16 fMode )
759 GlobalPageLock16(GlobalHandle16(SELECTOROF(vp)));
760 return (DWORD)K32WOWGetVDMPointer( vp, 0, (DWORD)fMode );
763 /***********************************************************************
764 * LoadLibraryEx32W (KERNEL.513)
766 DWORD WINAPI LoadLibraryEx32W16( LPCSTR lpszLibFile, DWORD hFile, DWORD dwFlags )
775 SetLastError(ERROR_INVALID_PARAMETER);
779 /* if the file can not be found, call LoadLibraryExA anyway, since it might be
780 a builtin module. This case is handled in MODULE_LoadLibraryExA */
782 if ((p = strrchr( lpszLibFile, '.' )) && !strchr( p, '\\' )) /* got an extension */
784 if (OpenFile16( lpszLibFile, &ofs, OF_EXIST ) != HFILE_ERROR16)
785 lpszLibFile = ofs.szPathName;
789 char buffer[MAX_PATH+4];
790 strcpy( buffer, lpszLibFile );
791 strcat( buffer, ".dll" );
792 if (OpenFile16( buffer, &ofs, OF_EXIST ) != HFILE_ERROR16)
793 lpszLibFile = ofs.szPathName;
796 ReleaseThunkLock( &mutex_count );
797 hModule = LoadLibraryExA( lpszLibFile, (HANDLE)hFile, dwFlags );
798 RestoreThunkLock( mutex_count );
800 return (DWORD)hModule;
803 /***********************************************************************
804 * GetProcAddress32W (KERNEL.515)
806 DWORD WINAPI GetProcAddress32W16( DWORD hModule, LPCSTR lpszProc )
808 return (DWORD)GetProcAddress( (HMODULE)hModule, lpszProc );
811 /***********************************************************************
812 * FreeLibrary32W (KERNEL.514)
814 DWORD WINAPI FreeLibrary32W16( DWORD hLibModule )
819 ReleaseThunkLock( &mutex_count );
820 retv = FreeLibrary( (HMODULE)hLibModule );
821 RestoreThunkLock( mutex_count );
826 /**********************************************************************
829 static DWORD WOW_CallProc32W16( FARPROC proc32, DWORD nrofargs, DWORD *args )
834 ReleaseThunkLock( &mutex_count );
837 * FIXME: If ( nrofargs & CPEX_DEST_CDECL ) != 0, we should call a
838 * 32-bit CDECL routine ...
841 if (!proc32) ret = 0;
842 else switch (nrofargs)
844 case 0: ret = proc32();
846 case 1: ret = proc32(args[0]);
848 case 2: ret = proc32(args[0],args[1]);
850 case 3: ret = proc32(args[0],args[1],args[2]);
852 case 4: ret = proc32(args[0],args[1],args[2],args[3]);
854 case 5: ret = proc32(args[0],args[1],args[2],args[3],args[4]);
856 case 6: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5]);
858 case 7: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
860 case 8: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
862 case 9: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8]);
864 case 10:ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9]);
866 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]);
868 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]);
870 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]);
872 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]);
874 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]);
877 /* FIXME: should go up to 32 arguments */
878 ERR("Unsupported number of arguments %ld, please report.\n",nrofargs);
883 RestoreThunkLock( mutex_count );
885 TRACE("returns %08lx\n",ret);
889 /**********************************************************************
890 * CallProc32W (KERNEL.517)
892 DWORD WINAPIV CallProc32W16( DWORD nrofargs, DWORD argconvmask, FARPROC proc32, VA_LIST16 valist )
897 TRACE("(%ld,%ld,%p args[",nrofargs,argconvmask,proc32);
899 for (i=0;i<nrofargs;i++)
901 if (argconvmask & (1<<i))
903 SEGPTR ptr = VA_ARG16( valist, SEGPTR );
904 /* pascal convention, have to reverse the arguments order */
905 args[nrofargs - i - 1] = (DWORD)MapSL(ptr);
906 TRACE("%08lx(%p),",ptr,MapSL(ptr));
910 DWORD arg = VA_ARG16( valist, DWORD );
911 /* pascal convention, have to reverse the arguments order */
912 args[nrofargs - i - 1] = arg;
918 /* POP nrofargs DWORD arguments and 3 DWORD parameters */
919 stack16_pop( (3 + nrofargs) * sizeof(DWORD) );
921 return WOW_CallProc32W16( proc32, nrofargs, args );
924 /**********************************************************************
925 * _CallProcEx32W (KERNEL.518)
927 DWORD WINAPIV CallProcEx32W16( DWORD nrofargs, DWORD argconvmask, FARPROC proc32, VA_LIST16 valist )
932 TRACE("(%ld,%ld,%p args[",nrofargs,argconvmask,proc32);
934 for (i=0;i<nrofargs;i++)
936 if (argconvmask & (1<<i))
938 SEGPTR ptr = VA_ARG16( valist, SEGPTR );
939 args[i] = (DWORD)MapSL(ptr);
940 TRACE("%08lx(%p),",ptr,MapSL(ptr));
944 DWORD arg = VA_ARG16( valist, DWORD );
950 return WOW_CallProc32W16( proc32, nrofargs, args );
954 /**********************************************************************
955 * WOW16Call (KERNEL.500)
960 DWORD WINAPIV WOW16Call(WORD x, WORD y, WORD z, VA_LIST16 args)
964 FIXME("(0x%04x,0x%04x,%d),calling (",x,y,z);
966 for (i=0;i<x/2;i++) {
967 WORD a = VA_ARG16(args,WORD);
970 calladdr = VA_ARG16(args,DWORD);
971 stack16_pop( 3*sizeof(WORD) + x + sizeof(DWORD) );
972 DPRINTF(") calling address was 0x%08lx\n",calladdr);
977 /***********************************************************************
978 * CreateThread16 (KERNEL.441)
980 HANDLE WINAPI CreateThread16( SECURITY_ATTRIBUTES *sa, DWORD stack,
981 FARPROC16 start, SEGPTR param,
982 DWORD flags, LPDWORD id )
984 struct thread_args *args = HeapAlloc( GetProcessHeap(), 0, sizeof(*args) );
985 if (!args) return INVALID_HANDLE_VALUE;
988 return CreateThread( sa, stack, start_thread16, args, flags, id );