2 * Win32 WOW Generic Thunk API
4 * Copyright 1999 Ulrich Weigand
7 #include "wine/winbase16.h"
14 #include "stackframe.h"
15 #include "builtin16.h"
16 #include "debugtools.h"
18 DEFAULT_DEBUG_CHANNEL(thunk);
21 * These are the 16-bit side WOW routines. They reside in wownt16.h
22 * in the SDK; since we don't support Win16 source code anyway, I've
23 * placed them here for compilation with Wine ...
26 DWORD WINAPI GetVDMPointer32W16(SEGPTR,UINT16);
28 DWORD WINAPI LoadLibraryEx32W16(LPCSTR,DWORD,DWORD);
29 DWORD WINAPI GetProcAddress32W16(DWORD,LPCSTR);
30 DWORD WINAPI FreeLibrary32W16(DWORD);
32 #define CPEX_DEST_STDCALL 0x00000000L
33 #define CPEX_DEST_CDECL 0x80000000L
35 DWORD WINAPI CallProcExW16(VOID);
36 DWORD WINAPI CallProcEx32W16(VOID);
39 * 32-bit WOW routines (in WOW32, but actually forwarded to KERNEL32)
42 /**********************************************************************
43 * WOWGetDescriptor (WOW32.1) (KERNEL32.70)
45 BOOL WINAPI WOWGetDescriptor( SEGPTR segptr, LPLDT_ENTRY ldtent )
47 return GetThreadSelectorEntry( GetCurrentThread(),
48 segptr >> 16, ldtent );
51 /**********************************************************************
52 * WOWGetVDMPointer (WOW32.5) (KERNEL32.56)
54 LPVOID WINAPI WOWGetVDMPointer( DWORD vp, DWORD dwBytes, BOOL fProtectedMode )
56 /* FIXME: add size check too */
59 return PTR_SEG_TO_LIN( vp );
61 return DOSMEM_MapRealToLinear( vp );
64 /**********************************************************************
65 * WOWGetVDMPointerFix (WOW32.6) (KERNEL32.68)
67 LPVOID WINAPI WOWGetVDMPointerFix( DWORD vp, DWORD dwBytes, BOOL fProtectedMode )
70 * Hmmm. According to the docu, we should call:
72 * GlobalFix16( SELECTOROF(vp) );
74 * But this is unnecessary under Wine, as we never move global
75 * memory segments in linear memory anyway.
77 * (I'm not so sure what we are *supposed* to do if
78 * fProtectedMode is TRUE, anyway ...)
81 return WOWGetVDMPointer( vp, dwBytes, fProtectedMode );
84 /**********************************************************************
85 * WOWGetVDMPointerUnFix (WOW32.7) (KERNEL32.69)
87 VOID WINAPI WOWGetVDMPointerUnfix( DWORD vp )
90 * See above why we don't call:
92 * GlobalUnfix16( SELECTOROF(vp) );
97 /**********************************************************************
98 * WOWGlobalAlloc16 (WOW32.8) (KERNEL32.59)
100 WORD WINAPI WOWGlobalAlloc16( WORD wFlags, DWORD cb )
102 return (WORD)GlobalAlloc16( wFlags, cb );
105 /**********************************************************************
106 * WOWGlobalFree16 (WOW32.10) (KERNEL32.62)
108 WORD WINAPI WOWGlobalFree16( WORD hMem )
110 return (WORD)GlobalFree16( (HGLOBAL16)hMem );
113 /**********************************************************************
114 * WOWGlobalLock16 (WOW32.11) (KERNEL32.60)
116 DWORD WINAPI WOWGlobalLock16( WORD hMem )
118 return (DWORD)WIN16_GlobalLock16( (HGLOBAL16)hMem );
121 /**********************************************************************
122 * WOWGlobalUnlock16 (WOW32.13) (KERNEL32.61)
124 BOOL WINAPI WOWGlobalUnlock16( WORD hMem )
126 return (BOOL)GlobalUnlock16( (HGLOBAL16)hMem );
129 /**********************************************************************
130 * WOWGlobalAllocLock16 (WOW32.9) (KERNEL32.63)
132 DWORD WINAPI WOWGlobalAllocLock16( WORD wFlags, DWORD cb, WORD *phMem )
134 WORD hMem = WOWGlobalAlloc16( wFlags, cb );
135 if (phMem) *phMem = hMem;
137 return WOWGlobalLock16( hMem );
140 /**********************************************************************
141 * WOWGlobalLockSize16 (WOW32.12) (KERNEL32.65)
143 DWORD WINAPI WOWGlobalLockSize16( WORD hMem, PDWORD pcb )
146 *pcb = GlobalSize16( (HGLOBAL16)hMem );
148 return WOWGlobalLock16( hMem );
151 /**********************************************************************
152 * WOWGlobalUnlockFree16 (WOW32.14) (KERNEL32.64)
154 WORD WINAPI WOWGlobalUnlockFree16( DWORD vpMem )
156 if ( !WOWGlobalUnlock16( HIWORD(vpMem) ) )
159 return WOWGlobalFree16( HIWORD(vpMem) );
163 /**********************************************************************
164 * WOWYield16 (WOW32.17) (KERNEL32.66)
166 VOID WINAPI WOWYield16( void )
169 * This does the right thing for both Win16 and Win32 tasks.
170 * More or less, at least :-/
175 /**********************************************************************
176 * WOWDirectedYield16 (WOW32.4) (KERNEL32.67)
178 VOID WINAPI WOWDirectedYield16( WORD htask16 )
181 * Argh. Our scheduler doesn't like DirectedYield by Win32
182 * tasks at all. So we do hope that this routine is indeed
183 * only ever called by Win16 tasks that have thunked up ...
185 DirectedYield16( (HTASK16)htask16 );
189 /***********************************************************************
190 * WOWHandle32 (WOW32.16) (KERNEL32.57)
192 HANDLE WINAPI WOWHandle32( WORD handle, WOW_HANDLE_TYPE type )
202 case WOW_TYPE_HMETAFILE:
204 case WOW_TYPE_HBITMAP:
205 case WOW_TYPE_HBRUSH:
206 case WOW_TYPE_HPALETTE:
208 case WOW_TYPE_HACCEL:
210 case WOW_TYPE_FULLHWND:
211 return (HANDLE)handle;
214 ERR( "handle 0x%04x of unknown type %d\n", handle, type );
215 return (HANDLE)handle;
219 /***********************************************************************
220 * WOWHandle16 (WOW32.15) (KERNEL32.58)
222 WORD WINAPI WOWHandle16( HANDLE handle, WOW_HANDLE_TYPE type )
224 if ( HIWORD(handle ) )
225 ERR( "handle 0x%08x of type %d has non-zero HIWORD\n", handle, type );
235 case WOW_TYPE_HMETAFILE:
237 case WOW_TYPE_HBITMAP:
238 case WOW_TYPE_HBRUSH:
239 case WOW_TYPE_HPALETTE:
241 case WOW_TYPE_HACCEL:
243 case WOW_TYPE_FULLHWND:
244 return LOWORD(handle);
247 ERR( "handle 0x%08x of unknown type %d\n", handle, type );
248 return LOWORD(handle);
252 /**********************************************************************
253 * WOWCallback16 (WOW32.2) (KERNEL32.54)
255 DWORD WINAPI WOWCallback16( DWORD vpfn16, DWORD dwParam )
259 if ( !WOWCallback16Ex( vpfn16, WCB16_PASCAL,
260 sizeof(DWORD), &dwParam, &ret ) )
266 /**********************************************************************
267 * WOWCallback16Ex (WOW32.3) (KERNEL32.55)
269 BOOL WINAPI WOWCallback16Ex( DWORD vpfn16, DWORD dwFlags,
270 DWORD cbArgs, LPVOID pArgs, LPDWORD pdwRetCode )
275 * Arguments must be prepared in the correct order by the caller
276 * (both for PASCAL and CDECL calling convention), so we simply
277 * copy them to the 16-bit stack ...
279 memcpy( (LPBYTE)CURRENT_STACK16 - cbArgs, (LPBYTE)pArgs, cbArgs );
283 * Actually, we should take care whether the called routine cleans up
284 * its stack or not. Fortunately, our CallTo16 core doesn't rely on
285 * the callee to do so; after the routine has returned, the 16-bit
286 * stack pointer is always reset to the position it had before.
289 ret = CallTo16Long( (FARPROC16)vpfn16, cbArgs );
294 return TRUE; /* success */
300 * 16-bit WOW routines (in KERNEL)
303 /**********************************************************************
304 * GetVDMPointer32W16 (KERNEL.516)
306 DWORD WINAPI GetVDMPointer32W16( SEGPTR vp, UINT16 fMode )
308 return (DWORD)WOWGetVDMPointer( vp, 0, (DWORD)fMode );
311 /***********************************************************************
312 * LoadLibraryEx32W16 (KERNEL.513)
314 DWORD WINAPI LoadLibraryEx32W16( LPCSTR lpszLibFile, DWORD hFile, DWORD dwFlags )
317 DOS_FULL_NAME full_name;
319 /* if the file can not be found, call LoadLibraryExA anyway, since it might be
320 a buildin module. This case is handled in MODULE_LoadLibraryExA */
322 if ( ! DIR_SearchPath ( NULL, lpszLibFile, ".DLL", &full_name, FALSE ) ) {
323 strcpy ( full_name.short_name, lpszLibFile );
326 SYSLEVEL_ReleaseWin16Lock();
327 hModule = LoadLibraryExA( full_name.short_name, (HANDLE)hFile, dwFlags );
328 SYSLEVEL_RestoreWin16Lock();
330 return (DWORD)hModule;
333 /***********************************************************************
334 * GetProcAddress32W16 (KERNEL.515)
336 DWORD WINAPI GetProcAddress32W16( DWORD hModule, LPCSTR lpszProc )
338 return (DWORD)GetProcAddress( (HMODULE)hModule, lpszProc );
341 /***********************************************************************
342 * FreeLibrary32W16 (KERNEL.514)
344 DWORD WINAPI FreeLibrary32W16( DWORD hLibModule )
348 SYSLEVEL_ReleaseWin16Lock();
349 retv = FreeLibrary( (HMODULE)hLibModule );
350 SYSLEVEL_RestoreWin16Lock();
356 /**********************************************************************
359 static DWORD WOW_CallProc32W16( BOOL Ex )
361 DWORD nrofargs, argconvmask;
368 SYSLEVEL_ReleaseWin16Lock();
370 VA_START16( valist );
371 nrofargs = VA_ARG16( valist, DWORD );
372 argconvmask = VA_ARG16( valist, DWORD );
373 proc32 = VA_ARG16( valist, FARPROC );
374 TRACE("(%ld,%ld,%p, Ex%d args[",nrofargs,argconvmask,proc32,Ex);
375 args = (DWORD*)HeapAlloc( GetProcessHeap(), 0, sizeof(DWORD)*nrofargs );
376 if(args == NULL) proc32 = NULL; /* maybe we should WARN here? */
377 /* CallProcEx doesn't need its args reversed */
378 for (i=0;i<nrofargs;i++) {
382 aix = nrofargs - i - 1;
384 if (argconvmask & (1<<i))
386 SEGPTR ptr = VA_ARG16( valist, SEGPTR );
387 if (args) args[aix] = (DWORD)PTR_SEG_TO_LIN(ptr);
388 if (TRACE_ON(thunk)) DPRINTF("%08lx(%p),",ptr,PTR_SEG_TO_LIN(ptr));
392 DWORD arg = VA_ARG16( valist, DWORD );
393 if (args) args[aix] = arg;
394 if (TRACE_ON(thunk)) DPRINTF("%ld,", arg);
397 if (TRACE_ON(thunk)) DPRINTF("])\n");
401 * FIXME: If ( nrofargs & CPEX_DEST_CDECL ) != 0, we should call a
402 * 32-bit CDECL routine ...
405 if (!proc32) ret = 0;
406 else switch (nrofargs)
408 case 0: ret = proc32();
410 case 1: ret = proc32(args[0]);
412 case 2: ret = proc32(args[0],args[1]);
414 case 3: ret = proc32(args[0],args[1],args[2]);
416 case 4: ret = proc32(args[0],args[1],args[2],args[3]);
418 case 5: ret = proc32(args[0],args[1],args[2],args[3],args[4]);
420 case 6: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5]);
422 case 7: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
424 case 8: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
426 case 9: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8]);
428 case 10:ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9]);
430 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]);
432 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]);
434 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]);
437 /* FIXME: should go up to 32 arguments */
438 ERR("Unsupported number of arguments %ld, please report.\n",nrofargs);
443 /* POP nrofargs DWORD arguments and 3 DWORD parameters */
444 if (!Ex) stack16_pop( (3 + nrofargs) * sizeof(DWORD) );
446 TRACE("returns %08lx\n",ret);
447 HeapFree( GetProcessHeap(), 0, args );
449 SYSLEVEL_RestoreWin16Lock();
454 /**********************************************************************
455 * CallProc32W16 (KERNEL.517)
457 * DWORD PASCAL CallProc32W( DWORD p1, ... , DWORD lpProcAddress,
458 * DWORD fAddressConvert, DWORD cParams );
460 DWORD WINAPI CallProc32W16( void )
462 return WOW_CallProc32W16( FALSE );
465 /**********************************************************************
466 * CallProcEx32W16 (KERNEL.518)
468 * DWORD CallProcEx32W( DWORD cParams, DWORD fAddressConvert,
469 * DWORD lpProcAddress, DWORD p1, ... );
471 DWORD WINAPI CallProcEx32W16( void )
473 return WOW_CallProc32W16( TRUE );
477 /**********************************************************************
478 * WOW16Call (KERNEL.501)
483 DWORD WINAPI WOW16Call(WORD x,WORD y,WORD z)
488 FIXME("(0x%04x,0x%04x,%d),calling (",x,y,z);
491 for (i=0;i<x/2;i++) {
492 WORD a = VA_ARG16(args,WORD);
495 calladdr = VA_ARG16(args,DWORD);
497 stack16_pop( x + sizeof(DWORD) );
498 DPRINTF(") calling address was 0x%08lx\n",calladdr);