Sweden-Number/msdos/interrupts.c

175 lines
4.6 KiB
C

/*
* Interrupt vectors emulation
*
* Copyright 1995 Alexandre Julliard
*/
#include <sys/types.h>
#include "windef.h"
#include "wine/winbase16.h"
#include "miscemu.h"
#include "msdos.h"
#include "module.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(int);
static INTPROC INT_WineHandler[256] = {
0, 0, 0, 0, 0, 0, 0, 0,
0, INT_Int09Handler, 0, 0, 0, 0, 0, 0,
INT_Int10Handler, INT_Int11Handler, INT_Int12Handler, INT_Int13Handler,
0, INT_Int15Handler, INT_Int16Handler, INT_Int17Handler,
0, 0, INT_Int1aHandler, 0, 0, 0, 0, 0,
INT_Int20Handler, DOS3Call, 0, 0, 0, INT_Int25Handler, 0, 0,
0, INT_Int29Handler, INT_Int2aHandler, 0, 0, 0, 0, INT_Int2fHandler,
0, INT_Int31Handler, 0, INT_Int33Handler
};
static FARPROC16 INT_Vectors[256];
/* Ordinal number for interrupt 0 handler in WPROCS.DLL */
#define FIRST_INTERRUPT 100
/**********************************************************************
* INT_GetPMHandler
*
* Return the protected mode interrupt vector for a given interrupt.
*/
FARPROC16 INT_GetPMHandler( BYTE intnum )
{
if (!INT_Vectors[intnum])
{
static HMODULE16 wprocs;
if (!wprocs)
{
if (((wprocs = GetModuleHandle16( "wprocs" )) < 32) &&
((wprocs = LoadLibrary16( "wprocs" )) < 32))
{
ERR("could not load wprocs.dll\n");
return 0;
}
}
if (!(INT_Vectors[intnum] = GetProcAddress16( wprocs, (LPCSTR)(FIRST_INTERRUPT + intnum))))
{
WARN("int%x not implemented, returning dummy handler\n", intnum );
INT_Vectors[intnum] = GetProcAddress16( wprocs, (LPCSTR)(FIRST_INTERRUPT + 256) );
}
}
return INT_Vectors[intnum];
}
/**********************************************************************
* INT_SetPMHandler
*
* Set the protected mode interrupt handler for a given interrupt.
*/
void INT_SetPMHandler( BYTE intnum, FARPROC16 handler )
{
TRACE("Set protected mode interrupt vector %02x <- %04x:%04x\n",
intnum, HIWORD(handler), LOWORD(handler) );
INT_Vectors[intnum] = handler;
}
/**********************************************************************
* INT_GetRMHandler
*
* Return the real mode interrupt vector for a given interrupt.
*/
FARPROC16 INT_GetRMHandler( BYTE intnum )
{
return ((FARPROC16*)DOSMEM_SystemBase())[intnum];
}
/**********************************************************************
* INT_SetRMHandler
*
* Set the real mode interrupt handler for a given interrupt.
*/
void INT_SetRMHandler( BYTE intnum, FARPROC16 handler )
{
TRACE("Set real mode interrupt vector %02x <- %04x:%04x\n",
intnum, HIWORD(handler), LOWORD(handler) );
((FARPROC16*)DOSMEM_SystemBase())[intnum] = handler;
}
/**********************************************************************
* INT_CtxGetHandler
*
* Return the interrupt vector for a given interrupt.
*/
FARPROC16 INT_CtxGetHandler( CONTEXT86 *context, BYTE intnum )
{
if (ISV86(context))
return INT_GetRMHandler(intnum);
else
return INT_GetPMHandler(intnum);
}
/**********************************************************************
* INT_CtxSetHandler
*
* Set the interrupt handler for a given interrupt.
*/
void INT_CtxSetHandler( CONTEXT86 *context, BYTE intnum, FARPROC16 handler )
{
if (ISV86(context))
INT_SetRMHandler(intnum, handler);
else
INT_SetPMHandler(intnum, handler);
}
/**********************************************************************
* INT_GetWineHandler
*
* Return the Wine interrupt handler for a given interrupt.
*/
INTPROC INT_GetWineHandler( BYTE intnum )
{
return INT_WineHandler[intnum];
}
/**********************************************************************
* INT_SetWineHandler
*
* Set the Wine interrupt handler for a given interrupt.
*/
void INT_SetWineHandler( BYTE intnum, INTPROC handler )
{
TRACE("Set Wine interrupt vector %02x <- %p\n", intnum, handler );
INT_WineHandler[intnum] = handler;
}
/**********************************************************************
* INT_RealModeInterrupt
*
* Handle real mode interrupts
*/
int INT_RealModeInterrupt( BYTE intnum, CONTEXT86 *context )
{
if (INT_WineHandler[intnum]) {
(*INT_WineHandler[intnum])(context);
return 0;
}
FIXME("Unknown Interrupt in DOS mode: 0x%x\n", intnum);
return 1;
}
/**********************************************************************
* INT_DefaultHandler (WPROCS.356)
*
* Default interrupt handler.
*/
void WINAPI INT_DefaultHandler( CONTEXT86 *context )
{
}