88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
/*
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* Copyright (C) 2002-2005 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* $Id: callback.h,v 1.15 2006-02-03 17:07:41 harekiet Exp $ */
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#ifndef DOSBOX_CALLBACK_H
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#define DOSBOX_CALLBACK_H
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#ifndef DOSBOX_MEM_H
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#include "mem.h"
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#endif
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typedef Bitu (*CallBack_Handler)(void);
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extern CallBack_Handler CallBack_Handlers[];
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enum { CB_RETN, CB_RETF,CB_IRET,CB_IRET_STI };
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#define CB_MAX 144
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#define CB_SEG 0xC800
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#define CB_BASE (CB_SEG << 4)
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enum {
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CBRET_NONE=0,CBRET_STOP=1
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};
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extern Bit8u lastint;
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INLINE RealPt CALLBACK_RealPointer(Bitu callback) {
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return RealMake(CB_SEG,callback << 4);
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}
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Bitu CALLBACK_Allocate();
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void CALLBACK_Idle(void);
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void CALLBACK_RunRealInt(Bit8u intnum);
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void CALLBACK_RunRealFar(Bit16u seg,Bit16u off);
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bool CALLBACK_Setup(Bitu callback,CallBack_Handler handler,Bitu type,const char* description=0);
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/* Returns with the size of the extra callback */
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Bitu CALLBACK_SetupExtra(Bitu callback, Bitu type, PhysPt physAddress);
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const char* CALLBACK_GetDescription(Bitu callback);
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bool CALLBACK_Free(Bitu callback);
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void CALLBACK_SCF(bool val);
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void CALLBACK_SZF(bool val);
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extern Bitu call_priv_io;
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class CALLBACK_HandlerObject{
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private:
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bool installed;
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Bit16u m_callback;
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enum {NONE,SETUP,SETUPAT} m_type;
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struct {
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RealPt old_vector;
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Bit8u interrupt;
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bool installed;
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} vectorhandler;
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public:
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CALLBACK_HandlerObject():installed(false),m_type(NONE){vectorhandler.installed=false;}
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~CALLBACK_HandlerObject();
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//Install and allocate a callback.
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void Install(CallBack_Handler handler,Bitu type,const char* description=0);
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//Only allocate a callback number
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void Allocate(CallBack_Handler handler,const char* description=0);
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Bit16u Get_callback(){return m_callback;}
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RealPt Get_RealPointer(){ return RealMake(CB_SEG,m_callback << 4);}
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void Set_RealVec(Bit8u vec);
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};
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#endif
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