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159 lines
4 KiB
C
159 lines
4 KiB
C
/*
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* Interrupt vectors emulation
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*
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* Copyright 1995 Alexandre Julliard
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*/
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#include <sys/types.h>
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#include "windef.h"
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#include "miscemu.h"
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#include "msdos.h"
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#include "debugtools.h"
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DEFAULT_DEBUG_CHANNEL(int)
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static FARPROC16 INT_Vectors[256];
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/**********************************************************************
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* INT_GetPMHandler
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*
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* Return the protected mode interrupt vector for a given interrupt.
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*/
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FARPROC16 INT_GetPMHandler( BYTE intnum )
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{
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return INT_Vectors[intnum];
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}
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/**********************************************************************
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* INT_SetPMHandler
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*
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* Set the protected mode interrupt handler for a given interrupt.
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*/
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void INT_SetPMHandler( BYTE intnum, FARPROC16 handler )
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{
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TRACE("Set protected mode interrupt vector %02x <- %04x:%04x\n",
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intnum, HIWORD(handler), LOWORD(handler) );
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INT_Vectors[intnum] = handler;
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}
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/**********************************************************************
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* INT_GetRMHandler
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*
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* Return the real mode interrupt vector for a given interrupt.
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*/
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FARPROC16 INT_GetRMHandler( BYTE intnum )
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{
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return ((FARPROC16*)DOSMEM_MemoryBase(0))[intnum];
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}
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/**********************************************************************
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* INT_SetRMHandler
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*
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* Set the real mode interrupt handler for a given interrupt.
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*/
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void INT_SetRMHandler( BYTE intnum, FARPROC16 handler )
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{
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TRACE("Set real mode interrupt vector %02x <- %04x:%04x\n",
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intnum, HIWORD(handler), LOWORD(handler) );
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((FARPROC16*)DOSMEM_MemoryBase(0))[intnum] = handler;
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}
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/**********************************************************************
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* INT_CtxGetHandler
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*
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* Return the interrupt vector for a given interrupt.
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*/
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FARPROC16 INT_CtxGetHandler( CONTEXT86 *context, BYTE intnum )
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{
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if (ISV86(context))
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return ((FARPROC16*)V86BASE(context))[intnum];
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else
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return INT_GetPMHandler(intnum);
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}
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/**********************************************************************
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* INT_CtxSetHandler
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*
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* Set the interrupt handler for a given interrupt.
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*/
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void INT_CtxSetHandler( CONTEXT86 *context, BYTE intnum, FARPROC16 handler )
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{
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if (ISV86(context)) {
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TRACE("Set real mode interrupt vector %02x <- %04x:%04x\n",
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intnum, HIWORD(handler), LOWORD(handler) );
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((FARPROC16*)V86BASE(context))[intnum] = handler;
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} else
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INT_SetPMHandler(intnum, handler);
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}
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/**********************************************************************
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* INT_RealModeInterrupt
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*
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* Handle real mode interrupts
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*/
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int INT_RealModeInterrupt( BYTE intnum, CONTEXT86 *context )
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{
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/* we should really map to if1632/wprocs.spec, but not all
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* interrupt handlers are adapted to support real mode yet */
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switch (intnum) {
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case 0x09:
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INT_Int09Handler(context);
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break;
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case 0x10:
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INT_Int10Handler(context);
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break;
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case 0x11:
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INT_Int11Handler(context);
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break;
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case 0x12:
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INT_Int12Handler(context);
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break;
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case 0x13:
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INT_Int13Handler(context);
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break;
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case 0x15:
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INT_Int15Handler(context);
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break;
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case 0x16:
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INT_Int16Handler(context);
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break;
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case 0x17:
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INT_Int17Handler(context);
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break;
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case 0x1a:
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INT_Int1aHandler(context);
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break;
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case 0x20:
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INT_Int20Handler(context);
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break;
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case 0x21:
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DOS3Call(context);
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break;
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case 0x25:
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INT_Int25Handler(context);
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break;
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case 0x29:
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INT_Int29Handler(context);
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break;
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case 0x2f:
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INT_Int2fHandler(context);
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break;
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case 0x31:
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INT_Int31Handler(context);
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break;
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case 0x33:
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INT_Int33Handler(context);
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break;
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default:
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FIXME("Unknown Interrupt in DOS mode: 0x%x\n", intnum);
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return 1;
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}
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return 0;
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}
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