Sweden-Number/dlls/vwin32.vxd/vwin32.c

253 lines
8.1 KiB
C

/*
* VWIN32 VxD implementation
*
* Copyright 1998 Marcus Meissner
* Copyright 1998 Ulrich Weigand
* Copyright 1998 Patrik Stridvall
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winioctl.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(vxd);
typedef struct tagDIOCRegs {
DWORD reg_EBX;
DWORD reg_EDX;
DWORD reg_ECX;
DWORD reg_EAX;
DWORD reg_EDI;
DWORD reg_ESI;
DWORD reg_Flags;
} DIOC_REGISTERS, *PDIOC_REGISTERS;
#define VWIN32_DIOC_DOS_IOCTL 1 /* This is the specified MS-DOS device I/O ctl - Interrupt 21h Function 4400h - 4411h */
#define VWIN32_DIOC_DOS_INT25 2 /* This is the Absolute Disk Read command - Interrupt 25h */
#define VWIN32_DIOC_DOS_INT26 3 /* This is the Absolute Disk Write command - Interrupt 25h */
#define VWIN32_DIOC_DOS_INT13 4 /* This is Interrupt 13h commands */
#define VWIN32_DIOC_SIMCTRLC 5 /* Simulate Ctrl-C */
#define VWIN32_DIOC_DOS_DRIVEINFO 6 /* This is Interrupt 21h Function 730X commands */
#include <pshpack1.h>
typedef struct tagMID {
WORD midInfoLevel;
DWORD midSerialNum;
BYTE midVolLabel[11];
BYTE midFileSysType[8];
} MID, *PMID;
#include <poppack.h>
typedef void (WINAPI *CallBuiltinHandler)( CONTEXT *context, BYTE intnum );
static CallBuiltinHandler load_builtin_handler(void)
{
static CallBuiltinHandler handler;
static BOOL init_done;
if (!init_done)
{
HMODULE mod = LoadLibraryA( "winedos.dll" );
if (mod) handler = (void *)GetProcAddress( mod, "CallBuiltinHandler" );
if (!handler) FIXME( "DOS calls not supported\n" );
init_done = TRUE;
}
return handler;
}
/* Pop a DWORD from the 32-bit stack */
static inline DWORD stack32_pop( CONTEXT86 *context )
{
DWORD ret = *(DWORD *)context->Esp;
context->Esp += sizeof(DWORD);
return ret;
}
static void DIOCRegs_2_CONTEXT( DIOC_REGISTERS *pIn, CONTEXT86 *pCxt )
{
memset( pCxt, 0, sizeof(*pCxt) );
/* Note: segment registers == 0 means that CTX_SEG_OFF_TO_LIN
will interpret 32-bit register contents as linear pointers */
pCxt->ContextFlags=CONTEXT86_INTEGER|CONTEXT86_CONTROL;
pCxt->Eax = pIn->reg_EAX;
pCxt->Ebx = pIn->reg_EBX;
pCxt->Ecx = pIn->reg_ECX;
pCxt->Edx = pIn->reg_EDX;
pCxt->Esi = pIn->reg_ESI;
pCxt->Edi = pIn->reg_EDI;
/* FIXME: Only partial CONTEXT86_CONTROL */
pCxt->EFlags = pIn->reg_Flags & ~0x00020000; /* clear vm86 mode */
}
static void CONTEXT_2_DIOCRegs( CONTEXT86 *pCxt, DIOC_REGISTERS *pOut )
{
memset( pOut, 0, sizeof(DIOC_REGISTERS) );
pOut->reg_EAX = pCxt->Eax;
pOut->reg_EBX = pCxt->Ebx;
pOut->reg_ECX = pCxt->Ecx;
pOut->reg_EDX = pCxt->Edx;
pOut->reg_ESI = pCxt->Esi;
pOut->reg_EDI = pCxt->Edi;
/* FIXME: Only partial CONTEXT86_CONTROL */
pOut->reg_Flags = pCxt->EFlags;
}
/***********************************************************************
* DeviceIoControl (VWIN32.VXD.@)
*/
BOOL WINAPI VWIN32_DeviceIoControl(DWORD dwIoControlCode,
LPVOID lpvInBuffer, DWORD cbInBuffer,
LPVOID lpvOutBuffer, DWORD cbOutBuffer,
LPDWORD lpcbBytesReturned, LPOVERLAPPED lpOverlapped)
{
switch (dwIoControlCode)
{
case VWIN32_DIOC_DOS_IOCTL:
case 0x10: /* Int 0x21 call, call it VWIN_DIOC_INT21 ? */
case VWIN32_DIOC_DOS_INT13:
case VWIN32_DIOC_DOS_INT25:
case VWIN32_DIOC_DOS_INT26:
case 0x29: /* Int 0x31 call, call it VWIN_DIOC_INT31 ? */
case VWIN32_DIOC_DOS_DRIVEINFO:
{
CONTEXT86 cxt;
DIOC_REGISTERS *pIn = lpvInBuffer;
DIOC_REGISTERS *pOut = lpvOutBuffer;
BYTE intnum = 0;
CallBuiltinHandler handler;
if (!(handler = load_builtin_handler()))
{
pOut->reg_Flags |= 0x0001;
return FALSE;
}
TRACE( "Control '%s': "
"eax=0x%08x, ebx=0x%08x, ecx=0x%08x, "
"edx=0x%08x, esi=0x%08x, edi=0x%08x\n",
(dwIoControlCode == VWIN32_DIOC_DOS_IOCTL)? "VWIN32_DIOC_DOS_IOCTL" :
(dwIoControlCode == VWIN32_DIOC_DOS_INT25)? "VWIN32_DIOC_DOS_INT25" :
(dwIoControlCode == VWIN32_DIOC_DOS_INT26)? "VWIN32_DIOC_DOS_INT26" :
(dwIoControlCode == VWIN32_DIOC_DOS_DRIVEINFO)? "VWIN32_DIOC_DOS_DRIVEINFO" : "???",
pIn->reg_EAX, pIn->reg_EBX, pIn->reg_ECX,
pIn->reg_EDX, pIn->reg_ESI, pIn->reg_EDI );
DIOCRegs_2_CONTEXT( pIn, &cxt );
switch (dwIoControlCode)
{
case VWIN32_DIOC_DOS_IOCTL: /* Call int 21h */
case 0x10: /* Int 0x21 call, call it VWIN_DIOC_INT21 ? */
case VWIN32_DIOC_DOS_DRIVEINFO: /* Call int 21h 730x */
intnum = 0x21;
break;
case VWIN32_DIOC_DOS_INT13:
intnum = 0x13;
break;
case VWIN32_DIOC_DOS_INT25:
intnum = 0x25;
break;
case VWIN32_DIOC_DOS_INT26:
intnum = 0x26;
break;
case 0x29: /* Int 0x31 call, call it VWIN_DIOC_INT31 ? */
intnum = 0x31;
break;
}
handler( &cxt, intnum );
CONTEXT_2_DIOCRegs( &cxt, pOut );
}
return TRUE;
case VWIN32_DIOC_SIMCTRLC:
FIXME( "Control VWIN32_DIOC_SIMCTRLC not implemented\n");
return FALSE;
default:
FIXME( "Unknown Control %d\n", dwIoControlCode);
return FALSE;
}
}
/***********************************************************************
* VxDCall (VWIN32.VXD.@)
*
* Service numbers taken from page 448 of Pietrek's "Windows 95 System
* Programming Secrets". Parameters from experimentation on real Win98.
*
*/
DWORD WINAPI VWIN32_VxDCall( DWORD service, CONTEXT86 *context )
{
switch ( LOWORD(service) )
{
case 0x0000: /* GetVersion */
{
DWORD vers = GetVersion();
return (LOBYTE(vers) << 8) | HIBYTE(vers);
}
case 0x0020: /* Get VMCPD Version */
{
DWORD parm = stack32_pop(context);
FIXME("Get VMCPD Version(%08x): partial stub!\n", parm);
/* FIXME: This is what Win98 returns, it may
* not be correct in all situations.
* It makes Bleem! happy though.
*/
return 0x0405;
}
case 0x0029: /* Int31/DPMI dispatch */
{
DWORD callnum = stack32_pop(context);
DWORD parm = stack32_pop(context);
CallBuiltinHandler handler;
TRACE("Int31/DPMI dispatch(%08x)\n", callnum);
if (!(handler = load_builtin_handler()))
{
context->EFlags |= 0x0001;
return 0;
}
context->Eax = callnum;
context->Ecx = parm;
handler( context, 0x31 );
return LOWORD(context->Eax);
}
case 0x002a: /* Int41 dispatch - parm = int41 service number */
{
DWORD callnum = stack32_pop(context);
return callnum; /* FIXME: should really call INT_Int41Handler() */
}
default:
FIXME("Unknown service %08x\n", service);
return 0xffffffff;
}
}