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goma/wine/e10b58425f8bda7fcec3977d12192aba275c2e4d/./dlls/kernel/wowthunk.c
blob: eb44d5418b9a28cfa2577b3c749e513fc2f79880 [file]
/*
* Win32 WOW Generic Thunk API
*
* Copyright 1999 Ulrich Weigand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <stdarg.h>
#include "wine/winbase16.h"
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "wownt32.h"
#include "excpt.h"
#include "winreg.h"
#include "winternl.h"
#include "miscemu.h"
#include "module.h"
#include "stackframe.h"
#include "kernel_private.h"
#include "wine/exception.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(thunk);
WINE_DECLARE_DEBUG_CHANNEL(relay);
WINE_DECLARE_DEBUG_CHANNEL(snoop);
/*
* These are the 16-bit side WOW routines. They reside in wownt16.h
* in the SDK; since we don't support Win16 source code anyway, I've
* placed them here for compilation with Wine ...
*/
DWORD WINAPI GetVDMPointer32W16(SEGPTR,UINT16);
DWORD WINAPI LoadLibraryEx32W16(LPCSTR,DWORD,DWORD);
DWORD WINAPI GetProcAddress32W16(DWORD,LPCSTR);
DWORD WINAPI FreeLibrary32W16(DWORD);
#define CPEX_DEST_STDCALL 0x00000000L
#define CPEX_DEST_CDECL 0x80000000L
/* thunk for 16-bit CreateThread */
struct thread_args
{
FARPROC16 proc;
DWORD param;
};
static DWORD CALLBACK start_thread16( LPVOID threadArgs )
{
struct thread_args args = *(struct thread_args *)threadArgs;
HeapFree( GetProcessHeap(), 0, threadArgs );
return K32WOWCallback16( (DWORD)args.proc, args.param );
}
#ifdef __i386__
/* symbols exported from relay16.s */
extern DWORD WINAPI wine_call_to_16( FARPROC16 target, DWORD cbArgs, PEXCEPTION_HANDLER handler );
extern void WINAPI wine_call_to_16_regs( CONTEXT86 *context, DWORD cbArgs, PEXCEPTION_HANDLER handler );
extern void Call16_Ret_Start();
extern void Call16_Ret_End();
extern void CallTo16_Ret();
extern void CALL32_CBClient_Ret();
extern void CALL32_CBClientEx_Ret();
extern void DPMI_PendingEventCheck();
extern void DPMI_PendingEventCheck_Cleanup();
extern void DPMI_PendingEventCheck_Return();
extern DWORD CallTo16_DataSelector;
extern SEGPTR CALL32_CBClient_RetAddr;
extern SEGPTR CALL32_CBClientEx_RetAddr;
extern BYTE Call16_Start;
extern BYTE Call16_End;
extern void RELAY16_InitDebugLists(void);
static LONG CALLBACK vectored_handler( EXCEPTION_POINTERS *ptrs );
static SEGPTR call16_ret_addr; /* segptr to CallTo16_Ret routine */
static WORD dpmi_checker_selector;
static DWORD dpmi_checker_offset_call;
static DWORD dpmi_checker_offset_cleanup;
static DWORD dpmi_checker_offset_return;
/***********************************************************************
* WOWTHUNK_Init
*/
BOOL WOWTHUNK_Init(void)
{
/* allocate the code selector for CallTo16 routines */
WORD codesel = SELECTOR_AllocBlock( (void *)Call16_Ret_Start,
(char *)Call16_Ret_End - (char *)Call16_Ret_Start,
WINE_LDT_FLAGS_CODE | WINE_LDT_FLAGS_32BIT );
if (!codesel) return FALSE;
/* Patch the return addresses for CallTo16 routines */
CallTo16_DataSelector = wine_get_ds();
call16_ret_addr = MAKESEGPTR( codesel, (char*)CallTo16_Ret - (char*)Call16_Ret_Start );
CALL32_CBClient_RetAddr =
MAKESEGPTR( codesel, (char*)CALL32_CBClient_Ret - (char*)Call16_Ret_Start );
CALL32_CBClientEx_RetAddr =
MAKESEGPTR( codesel, (char*)CALL32_CBClientEx_Ret - (char*)Call16_Ret_Start );
/* Prepare selector and offsets for DPMI event checking. */
dpmi_checker_selector = codesel;
dpmi_checker_offset_call =
(char*)DPMI_PendingEventCheck - (char*)Call16_Ret_Start;
dpmi_checker_offset_cleanup =
(char*)DPMI_PendingEventCheck_Cleanup - (char*)Call16_Ret_Start;
dpmi_checker_offset_return =
(char*)DPMI_PendingEventCheck_Return - (char*)Call16_Ret_Start;
if (TRACE_ON(relay) || TRACE_ON(snoop)) RELAY16_InitDebugLists();
/* setup emulation of protected instructions from 32-bit code (only for Win9x versions) */
if (GetVersion() & 0x80000000) RtlAddVectoredExceptionHandler( TRUE, vectored_handler );
return TRUE;
}
/*************************************************************
* fix_selector
*
* Fix a selector load that caused an exception if it's in the
* 16-bit relay code.
*/
static BOOL fix_selector( CONTEXT *context )
{
WORD *stack;
BYTE *instr = (BYTE *)context->Eip;
if (instr < &Call16_Start || instr >= &Call16_End) return FALSE;
/* skip prefixes */
while (*instr == 0x66 || *instr == 0x67) instr++;
switch(instr[0])
{
case 0x07: /* pop es */
case 0x17: /* pop ss */
case 0x1f: /* pop ds */
break;
case 0x0f: /* extended instruction */
switch(instr[1])
{
case 0xa1: /* pop fs */
case 0xa9: /* pop gs */
break;
default:
return FALSE;
}
break;
default:
return FALSE;
}
stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
TRACE( "fixing up selector %x for pop instruction\n", *stack );
*stack = 0;
return TRUE;
}
/*************************************************************
* insert_event_check
*
* Make resuming the context check for pending DPMI events
* before the original context is restored. This is required
* because DPMI events are asynchronous, they are blocked while
* Wine 32-bit code is being executed and we want to prevent
* a race when returning back to 16-bit or 32-bit DPMI context.
*/
static void insert_event_check( CONTEXT *context )
{
char *stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
/* don't do event check while in system code */
if (wine_ldt_is_system(context->SegCs))
return;
if(context->SegCs == dpmi_checker_selector &&
context->Eip >= dpmi_checker_offset_call &&
context->Eip <= dpmi_checker_offset_cleanup)
{
/*
* Nested call. Stack will be preserved.
*/
}
else if(context->SegCs == dpmi_checker_selector &&
context->Eip == dpmi_checker_offset_return)
{
/*
* Nested call. We have just finished popping the fs
* register, lets put it back into stack.
*/
stack -= sizeof(WORD);
*(WORD*)stack = context->SegFs;
context->Esp -= 2;
}
else
{
/*
* Call is not nested.
* Push modified registers into stack.
* These will be popped by the assembler stub.
*/
stack -= sizeof(DWORD);
*(DWORD*)stack = context->EFlags;
stack -= sizeof(DWORD);
*(DWORD*)stack = context->SegCs;
stack -= sizeof(DWORD);
*(DWORD*)stack = context->Eip;
stack -= sizeof(WORD);
*(WORD*)stack = context->SegFs;
context->Esp -= 14;
}
/*
* Modify the context so that we jump into assembler stub.
* TEB access is made easier by providing the stub
* with the correct fs register value.
*/
context->SegCs = dpmi_checker_selector;
context->Eip = dpmi_checker_offset_call;
context->SegFs = wine_get_fs();
}
/*************************************************************
* call16_handler
*
* Handler for exceptions occurring in 16-bit code.
*/
static DWORD call16_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame,
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher )
{
if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
{
/* unwinding: restore the stack pointer in the TEB, and leave the Win16 mutex */
STACK32FRAME *frame32 = (STACK32FRAME *)((char *)frame - offsetof(STACK32FRAME,frame));
NtCurrentTeb()->cur_stack = frame32->frame16;
_LeaveWin16Lock();
}
else if (record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
record->ExceptionCode == EXCEPTION_PRIV_INSTRUCTION)
{
if (wine_ldt_is_system(context->SegCs))
{
if (fix_selector( context )) return ExceptionContinueExecution;
}
else
{
SEGPTR gpHandler;
DWORD ret = INSTR_EmulateInstruction( record, context );
/*
* Insert check for pending DPMI events. Note that this
* check must be inserted after instructions have been
* emulated because the instruction emulation requires
* original CS:IP and the emulation may change TEB.dpmi_vif.
*/
if(NtCurrentTeb()->dpmi_vif)
insert_event_check( context );
if (ret != ExceptionContinueSearch) return ret;
/* check for Win16 __GP handler */
if ((gpHandler = HasGPHandler16( MAKESEGPTR( context->SegCs, context->Eip ) )))
{
WORD *stack = wine_ldt_get_ptr( context->SegSs, context->Esp );
*--stack = context->SegCs;
*--stack = context->Eip;
if (!IS_SELECTOR_32BIT(context->SegSs))
context->Esp = MAKELONG( LOWORD(context->Esp - 2*sizeof(WORD)),
HIWORD(context->Esp) );
else
context->Esp -= 2*sizeof(WORD);
context->SegCs = SELECTOROF( gpHandler );
context->Eip = OFFSETOF( gpHandler );
return ExceptionContinueExecution;
}
}
}
else if (record->ExceptionCode == EXCEPTION_VM86_STI)
{
insert_event_check( context );
}
return ExceptionContinueSearch;
}
/*************************************************************
* vm86_handler
*
* Handler for exceptions occurring in vm86 code.
*/
static DWORD vm86_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame,
CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher )
{
if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
return ExceptionContinueSearch;
if (record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
record->ExceptionCode == EXCEPTION_PRIV_INSTRUCTION)
{
return INSTR_EmulateInstruction( record, context );
}
return ExceptionContinueSearch;
}
/***********************************************************************
* vectored_handler
*
* Vectored exception handler used to emulate protected instructions
* from 32-bit code.
*/
static LONG CALLBACK vectored_handler( EXCEPTION_POINTERS *ptrs )
{
EXCEPTION_RECORD *record = ptrs->ExceptionRecord;
CONTEXT *context = ptrs->ContextRecord;
if (wine_ldt_is_system(context->SegCs) &&
(record->ExceptionCode == EXCEPTION_ACCESS_VIOLATION ||
record->ExceptionCode == EXCEPTION_PRIV_INSTRUCTION))
{
if (INSTR_EmulateInstruction( record, context ) == ExceptionContinueExecution)
return EXCEPTION_CONTINUE_EXECUTION;
}
return EXCEPTION_CONTINUE_SEARCH;
}
#else /* __i386__ */
BOOL WOWTHUNK_Init(void)
{
return TRUE;
}
#endif /* __i386__ */
/*
* 32-bit WOW routines (in WOW32, but actually forwarded to KERNEL32)
*/
/**********************************************************************
* K32WOWGetDescriptor (KERNEL32.70)
*/
BOOL WINAPI K32WOWGetDescriptor( SEGPTR segptr, LPLDT_ENTRY ldtent )
{
return GetThreadSelectorEntry( GetCurrentThread(),
segptr >> 16, ldtent );
}
/**********************************************************************
* K32WOWGetVDMPointer (KERNEL32.56)
*/
LPVOID WINAPI K32WOWGetVDMPointer( DWORD vp, DWORD dwBytes, BOOL fProtectedMode )
{
/* FIXME: add size check too */
if ( fProtectedMode )
return MapSL( vp );
else
return DOSMEM_MapRealToLinear( vp );
}
/**********************************************************************
* K32WOWGetVDMPointerFix (KERNEL32.68)
*/
LPVOID WINAPI K32WOWGetVDMPointerFix( DWORD vp, DWORD dwBytes, BOOL fProtectedMode )
{
/*
* Hmmm. According to the docu, we should call:
*
* GlobalFix16( SELECTOROF(vp) );
*
* But this is unnecessary under Wine, as we never move global
* memory segments in linear memory anyway.
*
* (I'm not so sure what we are *supposed* to do if
* fProtectedMode is TRUE, anyway ...)
*/
return K32WOWGetVDMPointer( vp, dwBytes, fProtectedMode );
}
/**********************************************************************
* K32WOWGetVDMPointerUnfix (KERNEL32.69)
*/
VOID WINAPI K32WOWGetVDMPointerUnfix( DWORD vp )
{
/*
* See above why we don't call:
*
* GlobalUnfix16( SELECTOROF(vp) );
*
*/
}
/**********************************************************************
* K32WOWGlobalAlloc16 (KERNEL32.59)
*/
WORD WINAPI K32WOWGlobalAlloc16( WORD wFlags, DWORD cb )
{
return (WORD)GlobalAlloc16( wFlags, cb );
}
/**********************************************************************
* K32WOWGlobalFree16 (KERNEL32.62)
*/
WORD WINAPI K32WOWGlobalFree16( WORD hMem )
{
return (WORD)GlobalFree16( (HGLOBAL16)hMem );
}
/**********************************************************************
* K32WOWGlobalUnlock16 (KERNEL32.61)
*/
BOOL WINAPI K32WOWGlobalUnlock16( WORD hMem )
{
return (BOOL)GlobalUnlock16( (HGLOBAL16)hMem );
}
/**********************************************************************
* K32WOWGlobalAllocLock16 (KERNEL32.63)
*/
DWORD WINAPI K32WOWGlobalAllocLock16( WORD wFlags, DWORD cb, WORD *phMem )
{
WORD hMem = K32WOWGlobalAlloc16( wFlags, cb );
if (phMem) *phMem = hMem;
return K32WOWGlobalLock16( hMem );
}
/**********************************************************************
* K32WOWGlobalLockSize16 (KERNEL32.65)
*/
DWORD WINAPI K32WOWGlobalLockSize16( WORD hMem, PDWORD pcb )
{
if ( pcb )
*pcb = GlobalSize16( (HGLOBAL16)hMem );
return K32WOWGlobalLock16( hMem );
}
/**********************************************************************
* K32WOWGlobalUnlockFree16 (KERNEL32.64)
*/
WORD WINAPI K32WOWGlobalUnlockFree16( DWORD vpMem )
{
if ( !K32WOWGlobalUnlock16( HIWORD(vpMem) ) )
return FALSE;
return K32WOWGlobalFree16( HIWORD(vpMem) );
}
/**********************************************************************
* K32WOWYield16 (KERNEL32.66)
*/
VOID WINAPI K32WOWYield16( void )
{
/*
* This does the right thing for both Win16 and Win32 tasks.
* More or less, at least :-/
*/
Yield16();
}
/**********************************************************************
* K32WOWDirectedYield16 (KERNEL32.67)
*/
VOID WINAPI K32WOWDirectedYield16( WORD htask16 )
{
/*
* Argh. Our scheduler doesn't like DirectedYield by Win32
* tasks at all. So we do hope that this routine is indeed
* only ever called by Win16 tasks that have thunked up ...
*/
DirectedYield16( (HTASK16)htask16 );
}
/***********************************************************************
* K32WOWHandle32 (KERNEL32.57)
*/
HANDLE WINAPI K32WOWHandle32( WORD handle, WOW_HANDLE_TYPE type )
{
switch ( type )
{
case WOW_TYPE_HWND:
case WOW_TYPE_HMENU:
case WOW_TYPE_HDWP:
case WOW_TYPE_HDROP:
case WOW_TYPE_HDC:
case WOW_TYPE_HFONT:
case WOW_TYPE_HRGN:
case WOW_TYPE_HBITMAP:
case WOW_TYPE_HBRUSH:
case WOW_TYPE_HPALETTE:
case WOW_TYPE_HPEN:
case WOW_TYPE_HACCEL:
return (HANDLE)(ULONG_PTR)handle;
case WOW_TYPE_HMETAFILE:
FIXME( "conversion of metafile handles not supported yet\n" );
return (HANDLE)(ULONG_PTR)handle;
case WOW_TYPE_HTASK:
return ((TDB *)GlobalLock16(handle))->teb->ClientId.UniqueThread;
case WOW_TYPE_FULLHWND:
FIXME( "conversion of full window handles not supported yet\n" );
return (HANDLE)(ULONG_PTR)handle;
default:
ERR( "handle 0x%04x of unknown type %d\n", handle, type );
return (HANDLE)(ULONG_PTR)handle;
}
}
/***********************************************************************
* K32WOWHandle16 (KERNEL32.58)
*/
WORD WINAPI K32WOWHandle16( HANDLE handle, WOW_HANDLE_TYPE type )
{
switch ( type )
{
case WOW_TYPE_HWND:
case WOW_TYPE_HMENU:
case WOW_TYPE_HDWP:
case WOW_TYPE_HDROP:
case WOW_TYPE_HDC:
case WOW_TYPE_HFONT:
case WOW_TYPE_HRGN:
case WOW_TYPE_HBITMAP:
case WOW_TYPE_HBRUSH:
case WOW_TYPE_HPALETTE:
case WOW_TYPE_HPEN:
case WOW_TYPE_HACCEL:
case WOW_TYPE_FULLHWND:
if ( HIWORD(handle ) )
ERR( "handle %p of type %d has non-zero HIWORD\n", handle, type );
return LOWORD(handle);
case WOW_TYPE_HMETAFILE:
FIXME( "conversion of metafile handles not supported yet\n" );
return LOWORD(handle);
case WOW_TYPE_HTASK:
return TASK_GetTaskFromThread( (DWORD)handle );
default:
ERR( "handle %p of unknown type %d\n", handle, type );
return LOWORD(handle);
}
}
/**********************************************************************
* K32WOWCallback16Ex (KERNEL32.55)
*/
BOOL WINAPI K32WOWCallback16Ex( DWORD vpfn16, DWORD dwFlags,
DWORD cbArgs, LPVOID pArgs, LPDWORD pdwRetCode )
{
#ifdef __i386__
/*
* Arguments must be prepared in the correct order by the caller
* (both for PASCAL and CDECL calling convention), so we simply
* copy them to the 16-bit stack ...
*/
char *stack = (char *)CURRENT_STACK16 - cbArgs;
memcpy( stack, pArgs, cbArgs );
if (dwFlags & (WCB16_REGS|WCB16_REGS_LONG))
{
CONTEXT *context = (CONTEXT *)pdwRetCode;
if (TRACE_ON(relay))
{
DWORD count = cbArgs / sizeof(WORD);
WORD * wstack = (WORD *)stack;
DPRINTF("%04lx:CallTo16(func=%04lx:%04x,ds=%04lx",
GetCurrentThreadId(),
context->SegCs, LOWORD(context->Eip), context->SegDs );
while (count) DPRINTF( ",%04x", wstack[--count] );
DPRINTF(") ss:sp=%04x:%04x",
SELECTOROF(NtCurrentTeb()->cur_stack), OFFSETOF(NtCurrentTeb()->cur_stack) );
DPRINTF(" ax=%04x bx=%04x cx=%04x dx=%04x si=%04x di=%04x bp=%04x es=%04x fs=%04x\n",
(WORD)context->Eax, (WORD)context->Ebx, (WORD)context->Ecx,
(WORD)context->Edx, (WORD)context->Esi, (WORD)context->Edi,
(WORD)context->Ebp, (WORD)context->SegEs, (WORD)context->SegFs );
SYSLEVEL_CheckNotLevel( 2 );
}
if (context->EFlags & 0x00020000) /* v86 mode */
{
EXCEPTION_REGISTRATION_RECORD frame;
frame.Handler = vm86_handler;
__wine_push_frame( &frame );
__wine_enter_vm86( context );
__wine_pop_frame( &frame );
}
else
{
/* push return address */
if (dwFlags & WCB16_REGS_LONG)
{
stack -= sizeof(DWORD);
*((DWORD *)stack) = HIWORD(call16_ret_addr);
stack -= sizeof(DWORD);
*((DWORD *)stack) = LOWORD(call16_ret_addr);
cbArgs += 2 * sizeof(DWORD);
}
else
{
stack -= sizeof(SEGPTR);
*((SEGPTR *)stack) = call16_ret_addr;
cbArgs += sizeof(SEGPTR);
}
/*
* Start call by checking for pending events.
* Note that wine_call_to_16_regs overwrites context stack
* pointer so we may modify it here without a problem.
*/
if (NtCurrentTeb()->dpmi_vif)
{
context->SegSs = wine_get_ds();
context->Esp = (DWORD)stack;
insert_event_check( context );
cbArgs += (DWORD)stack - context->Esp;
}
_EnterWin16Lock();
wine_call_to_16_regs( context, cbArgs, call16_handler );
_LeaveWin16Lock();
}
if (TRACE_ON(relay))
{
DPRINTF("%04lx:RetFrom16() ss:sp=%04x:%04x ",
GetCurrentThreadId(), SELECTOROF(NtCurrentTeb()->cur_stack),
OFFSETOF(NtCurrentTeb()->cur_stack));
DPRINTF(" ax=%04x bx=%04x cx=%04x dx=%04x bp=%04x sp=%04x\n",
(WORD)context->Eax, (WORD)context->Ebx, (WORD)context->Ecx,
(WORD)context->Edx, (WORD)context->Ebp, (WORD)context->Esp );
SYSLEVEL_CheckNotLevel( 2 );
}
}
else
{
DWORD ret;
if (TRACE_ON(relay))
{
DWORD count = cbArgs / sizeof(WORD);
WORD * wstack = (WORD *)stack;
DPRINTF("%04lx:CallTo16(func=%04x:%04x,ds=%04x",
GetCurrentThreadId(), HIWORD(vpfn16), LOWORD(vpfn16),
SELECTOROF(NtCurrentTeb()->cur_stack) );
while (count) DPRINTF( ",%04x", wstack[--count] );
DPRINTF(") ss:sp=%04x:%04x\n",
SELECTOROF(NtCurrentTeb()->cur_stack), OFFSETOF(NtCurrentTeb()->cur_stack) );
SYSLEVEL_CheckNotLevel( 2 );
}
/* push return address */
stack -= sizeof(SEGPTR);
*((SEGPTR *)stack) = call16_ret_addr;
cbArgs += sizeof(SEGPTR);
/*
* Actually, we should take care whether the called routine cleans up
* its stack or not. Fortunately, our wine_call_to_16 core doesn't rely on
* the callee to do so; after the routine has returned, the 16-bit
* stack pointer is always reset to the position it had before.
*/
_EnterWin16Lock();
ret = wine_call_to_16( (FARPROC16)vpfn16, cbArgs, call16_handler );
if (pdwRetCode) *pdwRetCode = ret;
_LeaveWin16Lock();
if (TRACE_ON(relay))
{
DPRINTF("%04lx:RetFrom16() ss:sp=%04x:%04x retval=%08lx\n",
GetCurrentThreadId(), SELECTOROF(NtCurrentTeb()->cur_stack),
OFFSETOF(NtCurrentTeb()->cur_stack), ret);
SYSLEVEL_CheckNotLevel( 2 );
}
}
#else
assert(0); /* cannot call to 16-bit on non-Intel architectures */
#endif /* __i386__ */
return TRUE; /* success */
}
/**********************************************************************
* K32WOWCallback16 (KERNEL32.54)
*/
DWORD WINAPI K32WOWCallback16( DWORD vpfn16, DWORD dwParam )
{
DWORD ret;
if ( !K32WOWCallback16Ex( vpfn16, WCB16_PASCAL,
sizeof(DWORD), &dwParam, &ret ) )
ret = 0L;
return ret;
}
/*
* 16-bit WOW routines (in KERNEL)
*/
/**********************************************************************
* GetVDMPointer32W (KERNEL.516)
*/
DWORD WINAPI GetVDMPointer32W16( SEGPTR vp, UINT16 fMode )
{
GlobalPageLock16(GlobalHandle16(SELECTOROF(vp)));
return (DWORD)K32WOWGetVDMPointer( vp, 0, (DWORD)fMode );
}
/***********************************************************************
* LoadLibraryEx32W (KERNEL.513)
*/
DWORD WINAPI LoadLibraryEx32W16( LPCSTR lpszLibFile, DWORD hFile, DWORD dwFlags )
{
HMODULE hModule;
DWORD mutex_count;
OFSTRUCT ofs;
const char *p;
if (!lpszLibFile)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
/* if the file can not be found, call LoadLibraryExA anyway, since it might be
a builtin module. This case is handled in MODULE_LoadLibraryExA */
if ((p = strrchr( lpszLibFile, '.' )) && !strchr( p, '\\' )) /* got an extension */
{
if (OpenFile16( lpszLibFile, &ofs, OF_EXIST ) != HFILE_ERROR16)
lpszLibFile = ofs.szPathName;
}
else
{
char buffer[MAX_PATH+4];
strcpy( buffer, lpszLibFile );
strcat( buffer, ".dll" );
if (OpenFile16( buffer, &ofs, OF_EXIST ) != HFILE_ERROR16)
lpszLibFile = ofs.szPathName;
}
ReleaseThunkLock( &mutex_count );
hModule = LoadLibraryExA( lpszLibFile, (HANDLE)hFile, dwFlags );
RestoreThunkLock( mutex_count );
return (DWORD)hModule;
}
/***********************************************************************
* GetProcAddress32W (KERNEL.515)
*/
DWORD WINAPI GetProcAddress32W16( DWORD hModule, LPCSTR lpszProc )
{
return (DWORD)GetProcAddress( (HMODULE)hModule, lpszProc );
}
/***********************************************************************
* FreeLibrary32W (KERNEL.514)
*/
DWORD WINAPI FreeLibrary32W16( DWORD hLibModule )
{
BOOL retv;
DWORD mutex_count;
ReleaseThunkLock( &mutex_count );
retv = FreeLibrary( (HMODULE)hLibModule );
RestoreThunkLock( mutex_count );
return (DWORD)retv;
}
/**********************************************************************
* WOW_CallProc32W
*/
static DWORD WOW_CallProc32W16( FARPROC proc32, DWORD nrofargs, DWORD *args )
{
DWORD ret;
DWORD mutex_count;
ReleaseThunkLock( &mutex_count );
/*
* FIXME: If ( nrofargs & CPEX_DEST_CDECL ) != 0, we should call a
* 32-bit CDECL routine ...
*/
if (!proc32) ret = 0;
else switch (nrofargs)
{
case 0: ret = proc32();
break;
case 1: ret = proc32(args[0]);
break;
case 2: ret = proc32(args[0],args[1]);
break;
case 3: ret = proc32(args[0],args[1],args[2]);
break;
case 4: ret = proc32(args[0],args[1],args[2],args[3]);
break;
case 5: ret = proc32(args[0],args[1],args[2],args[3],args[4]);
break;
case 6: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5]);
break;
case 7: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6]);
break;
case 8: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
break;
case 9: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8]);
break;
case 10:ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9]);
break;
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]);
break;
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]);
break;
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]);
break;
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]);
break;
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]);
break;
default:
/* FIXME: should go up to 32 arguments */
ERR("Unsupported number of arguments %ld, please report.\n",nrofargs);
ret = 0;
break;
}
RestoreThunkLock( mutex_count );
TRACE("returns %08lx\n",ret);
return ret;
}
/**********************************************************************
* CallProc32W (KERNEL.517)
*/
DWORD WINAPIV CallProc32W16( DWORD nrofargs, DWORD argconvmask, FARPROC proc32, VA_LIST16 valist )
{
DWORD args[32];
unsigned int i;
TRACE("(%ld,%ld,%p args[",nrofargs,argconvmask,proc32);
for (i=0;i<nrofargs;i++)
{
if (argconvmask & (1<<i))
{
SEGPTR ptr = VA_ARG16( valist, SEGPTR );
/* pascal convention, have to reverse the arguments order */
args[nrofargs - i - 1] = (DWORD)MapSL(ptr);
TRACE("%08lx(%p),",ptr,MapSL(ptr));
}
else
{
DWORD arg = VA_ARG16( valist, DWORD );
/* pascal convention, have to reverse the arguments order */
args[nrofargs - i - 1] = arg;
TRACE("%ld,", arg);
}
}
TRACE("])\n");
/* POP nrofargs DWORD arguments and 3 DWORD parameters */
stack16_pop( (3 + nrofargs) * sizeof(DWORD) );
return WOW_CallProc32W16( proc32, nrofargs, args );
}
/**********************************************************************
* _CallProcEx32W (KERNEL.518)
*/
DWORD WINAPIV CallProcEx32W16( DWORD nrofargs, DWORD argconvmask, FARPROC proc32, VA_LIST16 valist )
{
DWORD args[32];
unsigned int i;
TRACE("(%ld,%ld,%p args[",nrofargs,argconvmask,proc32);
for (i=0;i<nrofargs;i++)
{
if (argconvmask & (1<<i))
{
SEGPTR ptr = VA_ARG16( valist, SEGPTR );
args[i] = (DWORD)MapSL(ptr);
TRACE("%08lx(%p),",ptr,MapSL(ptr));
}
else
{
DWORD arg = VA_ARG16( valist, DWORD );
args[i] = arg;
TRACE("%ld,", arg);
}
}
TRACE("])\n");
return WOW_CallProc32W16( proc32, nrofargs, args );
}
/**********************************************************************
* WOW16Call (KERNEL.500)
*
* FIXME!!!
*
*/
DWORD WINAPIV WOW16Call(WORD x, WORD y, WORD z, VA_LIST16 args)
{
int i;
DWORD calladdr;
FIXME("(0x%04x,0x%04x,%d),calling (",x,y,z);
for (i=0;i<x/2;i++) {
WORD a = VA_ARG16(args,WORD);
DPRINTF("%04x ",a);
}
calladdr = VA_ARG16(args,DWORD);
stack16_pop( 3*sizeof(WORD) + x + sizeof(DWORD) );
DPRINTF(") calling address was 0x%08lx\n",calladdr);
return 0;
}
/***********************************************************************
* CreateThread16 (KERNEL.441)
*/
HANDLE WINAPI CreateThread16( SECURITY_ATTRIBUTES *sa, DWORD stack,
FARPROC16 start, SEGPTR param,
DWORD flags, LPDWORD id )
{
struct thread_args *args = HeapAlloc( GetProcessHeap(), 0, sizeof(*args) );
if (!args) return INVALID_HANDLE_VALUE;
args->proc = start;
args->param = param;
return CreateThread( sa, stack, start_thread16, args, flags, id );
}