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"
35 #include "kernel_private.h"
36 #include "kernel16_private.h"
37 #include "wine/exception.h"
38 #include "wine/debug.h"
40 WINE_DEFAULT_DEBUG_CHANNEL(thunk);
41 WINE_DECLARE_DEBUG_CHANNEL(relay);
42 WINE_DECLARE_DEBUG_CHANNEL(snoop);
45 * These are the 16-bit side WOW routines. They reside in wownt16.h
46 * in the SDK; since we don't support Win16 source code anyway, I've
47 * placed them here for compilation with Wine ...
50 DWORD WINAPI GetVDMPointer32W16(SEGPTR,UINT16);
52 DWORD WINAPI LoadLibraryEx32W16(LPCSTR,DWORD,DWORD);
53 DWORD WINAPI GetProcAddress32W16(DWORD,LPCSTR);
54 DWORD WINAPI FreeLibrary32W16(DWORD);
56 #define CPEX_DEST_STDCALL 0x00000000L
57 #define CPEX_DEST_CDECL 0x80000000L
59 /* thunk for 16-bit CreateThread */
66 static DWORD CALLBACK start_thread16( LPVOID threadArgs )
68 struct thread_args args = *(struct thread_args *)threadArgs;
69 HeapFree( GetProcessHeap(), 0, threadArgs );
70 return K32WOWCallback16( (DWORD)args.proc, args.param );
76 /* symbols exported from relay16.s */
77 extern DWORD WINAPI wine_call_to_16( FARPROC16 target, DWORD cbArgs, PEXCEPTION_HANDLER handler );
78 extern void WINAPI wine_call_to_16_regs( CONTEXT86 *context, DWORD cbArgs, PEXCEPTION_HANDLER handler );
79 extern void __wine_call_to_16_ret(void);
80 extern void CALL32_CBClient_Ret();
81 extern void CALL32_CBClientEx_Ret();
82 extern void DPMI_PendingEventCheck();
83 extern void DPMI_PendingEventCheck_Cleanup();
84 extern void DPMI_PendingEventCheck_Return();
85 extern BYTE __wine_call16_start[];
86 extern BYTE __wine_call16_end[];
88 extern void RELAY16_InitDebugLists(void);
90 static LONG CALLBACK vectored_handler( EXCEPTION_POINTERS *ptrs );
91 static SEGPTR call16_ret_addr; /* segptr to __wine_call_to_16_ret routine */
93 static WORD dpmi_checker_selector;
94 static DWORD dpmi_checker_offset_call;
95 static DWORD dpmi_checker_offset_cleanup;
96 static DWORD dpmi_checker_offset_return;
98 /***********************************************************************
101 BOOL WOWTHUNK_Init(void)
103 /* allocate the code selector for CallTo16 routines */
105 WORD codesel = wine_ldt_alloc_entries(1);
107 if (!codesel) return FALSE;
108 wine_ldt_set_base( &entry, __wine_call16_start );
109 wine_ldt_set_limit( &entry, (BYTE *)(&CallTo16_TebSelector + 1) - __wine_call16_start - 1 );
110 wine_ldt_set_flags( &entry, WINE_LDT_FLAGS_CODE | WINE_LDT_FLAGS_32BIT );
111 wine_ldt_set_entry( codesel, &entry );
113 /* Patch the return addresses for CallTo16 routines */
115 CallTo16_DataSelector = wine_get_ds();
116 call16_ret_addr = MAKESEGPTR( codesel, (BYTE *)__wine_call_to_16_ret - __wine_call16_start );
117 CALL32_CBClient_RetAddr =
118 MAKESEGPTR( codesel, (BYTE *)CALL32_CBClient_Ret - __wine_call16_start );
119 CALL32_CBClientEx_RetAddr =
120 MAKESEGPTR( codesel, (BYTE *)CALL32_CBClientEx_Ret - __wine_call16_start );
122 /* Prepare selector and offsets for DPMI event checking. */
123 dpmi_checker_selector = codesel;
124 dpmi_checker_offset_call = (BYTE *)DPMI_PendingEventCheck - __wine_call16_start;
125 dpmi_checker_offset_cleanup = (BYTE *)DPMI_PendingEventCheck_Cleanup - __wine_call16_start;
126 dpmi_checker_offset_return = (BYTE *)DPMI_PendingEventCheck_Return - __wine_call16_start;
128 if (TRACE_ON(relay) || TRACE_ON(snoop)) RELAY16_InitDebugLists();
130 /* setup emulation of protected instructions from 32-bit code (only for Win9x versions) */
131 if (GetVersion() & 0x80000000) RtlAddVectoredExceptionHandler( TRUE, vectored_handler );
136 /*************************************************************
139 * Fix a selector load that caused an exception if it's in the
142 static BOOL fix_selector( CONTEXT *context )
145 BYTE *instr = (BYTE *)context->Eip;
147 if (instr < __wine_call16_start || instr >= __wine_call16_end) return FALSE;
150 while (*instr == 0x66 || *instr == 0x67) instr++;
154 case 0x07: /* pop es */
155 case 0x17: /* pop ss */
156 case 0x1f: /* pop ds */
158 case 0x0f: /* extended instruction */
161 case 0xa1: /* pop fs */
162 case 0xa9: /* pop gs */
171 stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
172 TRACE( "fixing up selector %x for pop instruction\n", *stack );
178 /*************************************************************
181 * Make resuming the context check for pending DPMI events
182 * before the original context is restored. This is required
183 * because DPMI events are asynchronous, they are blocked while
184 * Wine 32-bit code is being executed and we want to prevent
185 * a race when returning back to 16-bit or 32-bit DPMI context.
187 static void insert_event_check( CONTEXT *context )
189 char *stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
191 /* don't do event check while in system code */
192 if (wine_ldt_is_system(context->SegCs))
195 if(context->SegCs == dpmi_checker_selector &&
196 context->Eip >= dpmi_checker_offset_call &&
197 context->Eip <= dpmi_checker_offset_cleanup)
200 * Nested call. Stack will be preserved.
203 else if(context->SegCs == dpmi_checker_selector &&
204 context->Eip == dpmi_checker_offset_return)
207 * Nested call. We have just finished popping the fs
208 * register, lets put it back into stack.
211 stack -= sizeof(WORD);
212 *(WORD*)stack = context->SegFs;
219 * Call is not nested.
220 * Push modified registers into stack.
221 * These will be popped by the assembler stub.
224 stack -= sizeof(DWORD);
225 *(DWORD*)stack = context->EFlags;
227 stack -= sizeof(DWORD);
228 *(DWORD*)stack = context->SegCs;
230 stack -= sizeof(DWORD);
231 *(DWORD*)stack = context->Eip;
233 stack -= sizeof(WORD);
234 *(WORD*)stack = context->SegFs;
240 * Modify the context so that we jump into assembler stub.
241 * TEB access is made easier by providing the stub
242 * with the correct fs register value.
245 context->SegCs = dpmi_checker_selector;
246 context->Eip = dpmi_checker_offset_call;
247 context->SegFs = wine_get_fs();
251 /*************************************************************
254 * Handler for exceptions occurring in 16-bit code.
256 static DWORD call16_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame,
257 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher )
259 if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
261 /* unwinding: restore the stack pointer in the TEB, and leave the Win16 mutex */
262 STACK32FRAME *frame32 = (STACK32FRAME *)((char *)frame - offsetof(STACK32FRAME,frame));
263 NtCurrentTeb()->WOW32Reserved = (void *)frame32->frame16;
266 else if (record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
267 record->ExceptionCode == EXCEPTION_PRIV_INSTRUCTION)
269 if (wine_ldt_is_system(context->SegCs))
271 if (fix_selector( context )) return ExceptionContinueExecution;
276 DWORD ret = INSTR_EmulateInstruction( record, context );
279 * Insert check for pending DPMI events. Note that this
280 * check must be inserted after instructions have been
281 * emulated because the instruction emulation requires
282 * original CS:IP and the emulation may change TEB.dpmi_vif.
284 if(NtCurrentTeb()->dpmi_vif)
285 insert_event_check( context );
287 if (ret != ExceptionContinueSearch) return ret;
289 /* check for Win16 __GP handler */
290 if ((gpHandler = HasGPHandler16( MAKESEGPTR( context->SegCs, context->Eip ) )))
292 WORD *stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
293 *--stack = context->SegCs;
294 *--stack = context->Eip;
296 if (!IS_SELECTOR_32BIT(context->SegSs))
297 context->Esp = MAKELONG( LOWORD(context->Esp - 2*sizeof(WORD)),
298 HIWORD(context->Esp) );
300 context->Esp -= 2*sizeof(WORD);
302 context->SegCs = SELECTOROF( gpHandler );
303 context->Eip = OFFSETOF( gpHandler );
304 return ExceptionContinueExecution;
308 else if (record->ExceptionCode == EXCEPTION_VM86_STI)
310 insert_event_check( context );
312 return ExceptionContinueSearch;
316 /*************************************************************
319 * Handler for exceptions occurring in vm86 code.
321 static DWORD vm86_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame,
322 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher )
324 if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
325 return ExceptionContinueSearch;
327 if (record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
328 record->ExceptionCode == EXCEPTION_PRIV_INSTRUCTION)
330 return INSTR_EmulateInstruction( record, context );
333 return ExceptionContinueSearch;
337 /***********************************************************************
340 * Vectored exception handler used to emulate protected instructions
343 static LONG CALLBACK vectored_handler( EXCEPTION_POINTERS *ptrs )
345 EXCEPTION_RECORD *record = ptrs->ExceptionRecord;
346 CONTEXT *context = ptrs->ContextRecord;
348 if (wine_ldt_is_system(context->SegCs) &&
349 (record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
350 record->ExceptionCode == EXCEPTION_PRIV_INSTRUCTION))
352 if (INSTR_EmulateInstruction( record, context ) == ExceptionContinueExecution)
353 return EXCEPTION_CONTINUE_EXECUTION;
355 return EXCEPTION_CONTINUE_SEARCH;
361 BOOL WOWTHUNK_Init(void)
366 #endif /* __i386__ */
370 * 32-bit WOW routines (in WOW32, but actually forwarded to KERNEL32)
373 /**********************************************************************
374 * K32WOWGetDescriptor (KERNEL32.70)
376 BOOL WINAPI K32WOWGetDescriptor( SEGPTR segptr, LPLDT_ENTRY ldtent )
378 return GetThreadSelectorEntry( GetCurrentThread(),
379 segptr >> 16, ldtent );
382 /**********************************************************************
383 * K32WOWGetVDMPointer (KERNEL32.56)
385 LPVOID WINAPI K32WOWGetVDMPointer( DWORD vp, DWORD dwBytes, BOOL fProtectedMode )
387 /* FIXME: add size check too */
389 if ( fProtectedMode )
392 return DOSMEM_MapRealToLinear( vp );
395 /**********************************************************************
396 * K32WOWGetVDMPointerFix (KERNEL32.68)
398 LPVOID WINAPI K32WOWGetVDMPointerFix( DWORD vp, DWORD dwBytes, BOOL fProtectedMode )
401 * Hmmm. According to the docu, we should call:
403 * GlobalFix16( SELECTOROF(vp) );
405 * But this is unnecessary under Wine, as we never move global
406 * memory segments in linear memory anyway.
408 * (I'm not so sure what we are *supposed* to do if
409 * fProtectedMode is TRUE, anyway ...)
412 return K32WOWGetVDMPointer( vp, dwBytes, fProtectedMode );
415 /**********************************************************************
416 * K32WOWGetVDMPointerUnfix (KERNEL32.69)
418 VOID WINAPI K32WOWGetVDMPointerUnfix( DWORD vp )
421 * See above why we don't call:
423 * GlobalUnfix16( SELECTOROF(vp) );
428 /**********************************************************************
429 * K32WOWGlobalAlloc16 (KERNEL32.59)
431 WORD WINAPI K32WOWGlobalAlloc16( WORD wFlags, DWORD cb )
433 return (WORD)GlobalAlloc16( wFlags, cb );
436 /**********************************************************************
437 * K32WOWGlobalFree16 (KERNEL32.62)
439 WORD WINAPI K32WOWGlobalFree16( WORD hMem )
441 return (WORD)GlobalFree16( (HGLOBAL16)hMem );
444 /**********************************************************************
445 * K32WOWGlobalUnlock16 (KERNEL32.61)
447 BOOL WINAPI K32WOWGlobalUnlock16( WORD hMem )
449 return (BOOL)GlobalUnlock16( (HGLOBAL16)hMem );
452 /**********************************************************************
453 * K32WOWGlobalAllocLock16 (KERNEL32.63)
455 DWORD WINAPI K32WOWGlobalAllocLock16( WORD wFlags, DWORD cb, WORD *phMem )
457 WORD hMem = K32WOWGlobalAlloc16( wFlags, cb );
458 if (phMem) *phMem = hMem;
460 return K32WOWGlobalLock16( hMem );
463 /**********************************************************************
464 * K32WOWGlobalLockSize16 (KERNEL32.65)
466 DWORD WINAPI K32WOWGlobalLockSize16( WORD hMem, PDWORD pcb )
469 *pcb = GlobalSize16( (HGLOBAL16)hMem );
471 return K32WOWGlobalLock16( hMem );
474 /**********************************************************************
475 * K32WOWGlobalUnlockFree16 (KERNEL32.64)
477 WORD WINAPI K32WOWGlobalUnlockFree16( DWORD vpMem )
479 if ( !K32WOWGlobalUnlock16( HIWORD(vpMem) ) )
482 return K32WOWGlobalFree16( HIWORD(vpMem) );
486 /**********************************************************************
487 * K32WOWYield16 (KERNEL32.66)
489 VOID WINAPI K32WOWYield16( void )
492 * This does the right thing for both Win16 and Win32 tasks.
493 * More or less, at least :-/
498 /**********************************************************************
499 * K32WOWDirectedYield16 (KERNEL32.67)
501 VOID WINAPI K32WOWDirectedYield16( WORD htask16 )
504 * Argh. Our scheduler doesn't like DirectedYield by Win32
505 * tasks at all. So we do hope that this routine is indeed
506 * only ever called by Win16 tasks that have thunked up ...
508 DirectedYield16( (HTASK16)htask16 );
512 /***********************************************************************
513 * K32WOWHandle32 (KERNEL32.57)
515 HANDLE WINAPI K32WOWHandle32( WORD handle, WOW_HANDLE_TYPE type )
526 case WOW_TYPE_HBITMAP:
527 case WOW_TYPE_HBRUSH:
528 case WOW_TYPE_HPALETTE:
530 case WOW_TYPE_HACCEL:
531 return (HANDLE)(ULONG_PTR)handle;
533 case WOW_TYPE_HMETAFILE:
534 FIXME( "conversion of metafile handles not supported yet\n" );
535 return (HANDLE)(ULONG_PTR)handle;
538 return ((TDB *)GlobalLock16(handle))->teb->ClientId.UniqueThread;
540 case WOW_TYPE_FULLHWND:
541 FIXME( "conversion of full window handles not supported yet\n" );
542 return (HANDLE)(ULONG_PTR)handle;
545 ERR( "handle 0x%04x of unknown type %d\n", handle, type );
546 return (HANDLE)(ULONG_PTR)handle;
550 /***********************************************************************
551 * K32WOWHandle16 (KERNEL32.58)
553 WORD WINAPI K32WOWHandle16( HANDLE handle, WOW_HANDLE_TYPE type )
564 case WOW_TYPE_HBITMAP:
565 case WOW_TYPE_HBRUSH:
566 case WOW_TYPE_HPALETTE:
568 case WOW_TYPE_HACCEL:
569 case WOW_TYPE_FULLHWND:
570 if ( HIWORD(handle ) )
571 ERR( "handle %p of type %d has non-zero HIWORD\n", handle, type );
572 return LOWORD(handle);
574 case WOW_TYPE_HMETAFILE:
575 FIXME( "conversion of metafile handles not supported yet\n" );
576 return LOWORD(handle);
579 return TASK_GetTaskFromThread( (DWORD)handle );
582 ERR( "handle %p of unknown type %d\n", handle, type );
583 return LOWORD(handle);
587 /**********************************************************************
588 * K32WOWCallback16Ex (KERNEL32.55)
590 BOOL WINAPI K32WOWCallback16Ex( DWORD vpfn16, DWORD dwFlags,
591 DWORD cbArgs, LPVOID pArgs, LPDWORD pdwRetCode )
595 * Arguments must be prepared in the correct order by the caller
596 * (both for PASCAL and CDECL calling convention), so we simply
597 * copy them to the 16-bit stack ...
599 char *stack = (char *)CURRENT_STACK16 - cbArgs;
601 memcpy( stack, pArgs, cbArgs );
603 if (dwFlags & (WCB16_REGS|WCB16_REGS_LONG))
605 CONTEXT *context = (CONTEXT *)pdwRetCode;
609 DWORD count = cbArgs / sizeof(WORD);
610 WORD * wstack = (WORD *)stack;
612 DPRINTF("%04lx:CallTo16(func=%04lx:%04x,ds=%04lx",
613 GetCurrentThreadId(),
614 context->SegCs, LOWORD(context->Eip), context->SegDs );
615 while (count) DPRINTF( ",%04x", wstack[--count] );
616 DPRINTF(") ss:sp=%04x:%04x",
617 SELECTOROF(NtCurrentTeb()->WOW32Reserved), OFFSETOF(NtCurrentTeb()->WOW32Reserved) );
618 DPRINTF(" ax=%04x bx=%04x cx=%04x dx=%04x si=%04x di=%04x bp=%04x es=%04x fs=%04x\n",
619 (WORD)context->Eax, (WORD)context->Ebx, (WORD)context->Ecx,
620 (WORD)context->Edx, (WORD)context->Esi, (WORD)context->Edi,
621 (WORD)context->Ebp, (WORD)context->SegEs, (WORD)context->SegFs );
622 SYSLEVEL_CheckNotLevel( 2 );
625 if (context->EFlags & 0x00020000) /* v86 mode */
627 EXCEPTION_REGISTRATION_RECORD frame;
628 frame.Handler = vm86_handler;
629 __wine_push_frame( &frame );
630 __wine_enter_vm86( context );
631 __wine_pop_frame( &frame );
635 /* push return address */
636 if (dwFlags & WCB16_REGS_LONG)
638 stack -= sizeof(DWORD);
639 *((DWORD *)stack) = HIWORD(call16_ret_addr);
640 stack -= sizeof(DWORD);
641 *((DWORD *)stack) = LOWORD(call16_ret_addr);
642 cbArgs += 2 * sizeof(DWORD);
646 stack -= sizeof(SEGPTR);
647 *((SEGPTR *)stack) = call16_ret_addr;
648 cbArgs += sizeof(SEGPTR);
652 * Start call by checking for pending events.
653 * Note that wine_call_to_16_regs overwrites context stack
654 * pointer so we may modify it here without a problem.
656 if (NtCurrentTeb()->dpmi_vif)
658 context->SegSs = wine_get_ds();
659 context->Esp = (DWORD)stack;
660 insert_event_check( context );
661 cbArgs += (DWORD)stack - context->Esp;
665 wine_call_to_16_regs( context, cbArgs, call16_handler );
671 DPRINTF("%04lx:RetFrom16() ss:sp=%04x:%04x ",
672 GetCurrentThreadId(), SELECTOROF(NtCurrentTeb()->WOW32Reserved),
673 OFFSETOF(NtCurrentTeb()->WOW32Reserved));
674 DPRINTF(" ax=%04x bx=%04x cx=%04x dx=%04x bp=%04x sp=%04x\n",
675 (WORD)context->Eax, (WORD)context->Ebx, (WORD)context->Ecx,
676 (WORD)context->Edx, (WORD)context->Ebp, (WORD)context->Esp );
677 SYSLEVEL_CheckNotLevel( 2 );
686 DWORD count = cbArgs / sizeof(WORD);
687 WORD * wstack = (WORD *)stack;
689 DPRINTF("%04lx:CallTo16(func=%04x:%04x,ds=%04x",
690 GetCurrentThreadId(), HIWORD(vpfn16), LOWORD(vpfn16),
691 SELECTOROF(NtCurrentTeb()->WOW32Reserved) );
692 while (count) DPRINTF( ",%04x", wstack[--count] );
693 DPRINTF(") ss:sp=%04x:%04x\n",
694 SELECTOROF(NtCurrentTeb()->WOW32Reserved), OFFSETOF(NtCurrentTeb()->WOW32Reserved) );
695 SYSLEVEL_CheckNotLevel( 2 );
698 /* push return address */
699 stack -= sizeof(SEGPTR);
700 *((SEGPTR *)stack) = call16_ret_addr;
701 cbArgs += sizeof(SEGPTR);
704 * Actually, we should take care whether the called routine cleans up
705 * its stack or not. Fortunately, our wine_call_to_16 core doesn't rely on
706 * the callee to do so; after the routine has returned, the 16-bit
707 * stack pointer is always reset to the position it had before.
710 ret = wine_call_to_16( (FARPROC16)vpfn16, cbArgs, call16_handler );
711 if (pdwRetCode) *pdwRetCode = ret;
716 DPRINTF("%04lx:RetFrom16() ss:sp=%04x:%04x retval=%08lx\n",
717 GetCurrentThreadId(), SELECTOROF(NtCurrentTeb()->WOW32Reserved),
718 OFFSETOF(NtCurrentTeb()->WOW32Reserved), ret);
719 SYSLEVEL_CheckNotLevel( 2 );
723 assert(0); /* cannot call to 16-bit on non-Intel architectures */
724 #endif /* __i386__ */
726 return TRUE; /* success */
729 /**********************************************************************
730 * K32WOWCallback16 (KERNEL32.54)
732 DWORD WINAPI K32WOWCallback16( DWORD vpfn16, DWORD dwParam )
736 if ( !K32WOWCallback16Ex( vpfn16, WCB16_PASCAL,
737 sizeof(DWORD), &dwParam, &ret ) )
745 * 16-bit WOW routines (in KERNEL)
748 /**********************************************************************
749 * GetVDMPointer32W (KERNEL.516)
751 DWORD WINAPI GetVDMPointer32W16( SEGPTR vp, UINT16 fMode )
753 GlobalPageLock16(GlobalHandle16(SELECTOROF(vp)));
754 return (DWORD)K32WOWGetVDMPointer( vp, 0, (DWORD)fMode );
757 /***********************************************************************
758 * LoadLibraryEx32W (KERNEL.513)
760 DWORD WINAPI LoadLibraryEx32W16( LPCSTR lpszLibFile, DWORD hFile, DWORD dwFlags )
769 SetLastError(ERROR_INVALID_PARAMETER);
773 /* if the file cannot be found, call LoadLibraryExA anyway, since it might be
774 a builtin module. This case is handled in MODULE_LoadLibraryExA */
776 if ((p = strrchr( lpszLibFile, '.' )) && !strchr( p, '\\' )) /* got an extension */
778 if (OpenFile16( lpszLibFile, &ofs, OF_EXIST ) != HFILE_ERROR16)
779 lpszLibFile = ofs.szPathName;
783 char buffer[MAX_PATH+4];
784 strcpy( buffer, lpszLibFile );
785 strcat( buffer, ".dll" );
786 if (OpenFile16( buffer, &ofs, OF_EXIST ) != HFILE_ERROR16)
787 lpszLibFile = ofs.szPathName;
790 ReleaseThunkLock( &mutex_count );
791 hModule = LoadLibraryExA( lpszLibFile, (HANDLE)hFile, dwFlags );
792 RestoreThunkLock( mutex_count );
794 return (DWORD)hModule;
797 /***********************************************************************
798 * GetProcAddress32W (KERNEL.515)
800 DWORD WINAPI GetProcAddress32W16( DWORD hModule, LPCSTR lpszProc )
802 return (DWORD)GetProcAddress( (HMODULE)hModule, lpszProc );
805 /***********************************************************************
806 * FreeLibrary32W (KERNEL.514)
808 DWORD WINAPI FreeLibrary32W16( DWORD hLibModule )
813 ReleaseThunkLock( &mutex_count );
814 retv = FreeLibrary( (HMODULE)hLibModule );
815 RestoreThunkLock( mutex_count );
820 /**********************************************************************
823 static DWORD WOW_CallProc32W16( FARPROC proc32, DWORD nrofargs, DWORD *args )
828 ReleaseThunkLock( &mutex_count );
831 * FIXME: If ( nrofargs & CPEX_DEST_CDECL ) != 0, we should call a
832 * 32-bit CDECL routine ...
835 if (!proc32) ret = 0;
836 else switch (nrofargs)
838 case 0: ret = proc32();
840 case 1: ret = proc32(args[0]);
842 case 2: ret = proc32(args[0],args[1]);
844 case 3: ret = proc32(args[0],args[1],args[2]);
846 case 4: ret = proc32(args[0],args[1],args[2],args[3]);
848 case 5: ret = proc32(args[0],args[1],args[2],args[3],args[4]);
850 case 6: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5]);
852 case 7: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
854 case 8: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
856 case 9: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8]);
858 case 10:ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9]);
860 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]);
862 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]);
864 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]);
866 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]);
868 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]);
871 /* FIXME: should go up to 32 arguments */
872 ERR("Unsupported number of arguments %ld, please report.\n",nrofargs);
877 RestoreThunkLock( mutex_count );
879 TRACE("returns %08lx\n",ret);
883 /**********************************************************************
884 * CallProc32W (KERNEL.517)
886 DWORD WINAPIV CallProc32W16( DWORD nrofargs, DWORD argconvmask, FARPROC proc32, VA_LIST16 valist )
891 TRACE("(%ld,%ld,%p args[",nrofargs,argconvmask,proc32);
893 for (i=0;i<nrofargs;i++)
895 if (argconvmask & (1<<i))
897 SEGPTR ptr = VA_ARG16( valist, SEGPTR );
898 /* pascal convention, have to reverse the arguments order */
899 args[nrofargs - i - 1] = (DWORD)MapSL(ptr);
900 TRACE("%08lx(%p),",ptr,MapSL(ptr));
904 DWORD arg = VA_ARG16( valist, DWORD );
905 /* pascal convention, have to reverse the arguments order */
906 args[nrofargs - i - 1] = arg;
912 /* POP nrofargs DWORD arguments and 3 DWORD parameters */
913 stack16_pop( (3 + nrofargs) * sizeof(DWORD) );
915 return WOW_CallProc32W16( proc32, nrofargs, args );
918 /**********************************************************************
919 * _CallProcEx32W (KERNEL.518)
921 DWORD WINAPIV CallProcEx32W16( DWORD nrofargs, DWORD argconvmask, FARPROC proc32, VA_LIST16 valist )
926 TRACE("(%ld,%ld,%p args[",nrofargs,argconvmask,proc32);
928 for (i=0;i<nrofargs;i++)
930 if (argconvmask & (1<<i))
932 SEGPTR ptr = VA_ARG16( valist, SEGPTR );
933 args[i] = (DWORD)MapSL(ptr);
934 TRACE("%08lx(%p),",ptr,MapSL(ptr));
938 DWORD arg = VA_ARG16( valist, DWORD );
944 return WOW_CallProc32W16( proc32, nrofargs, args );
948 /**********************************************************************
949 * WOW16Call (KERNEL.500)
954 DWORD WINAPIV WOW16Call(WORD x, WORD y, WORD z, VA_LIST16 args)
958 FIXME("(0x%04x,0x%04x,%d),calling (",x,y,z);
960 for (i=0;i<x/2;i++) {
961 WORD a = VA_ARG16(args,WORD);
964 calladdr = VA_ARG16(args,DWORD);
965 stack16_pop( 3*sizeof(WORD) + x + sizeof(DWORD) );
966 DPRINTF(") calling address was 0x%08lx\n",calladdr);
971 /***********************************************************************
972 * CreateThread16 (KERNEL.441)
974 HANDLE WINAPI CreateThread16( SECURITY_ATTRIBUTES *sa, DWORD stack,
975 FARPROC16 start, SEGPTR param,
976 DWORD flags, LPDWORD id )
978 struct thread_args *args = HeapAlloc( GetProcessHeap(), 0, sizeof(*args) );
979 if (!args) return INVALID_HANDLE_VALUE;
982 return CreateThread( sa, stack, start_thread16, args, flags, id );