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/*
* Copyright (C) 2002-2015 The DOSBox Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef DOSBOX_CALLBACK_H
#define DOSBOX_CALLBACK_H
#ifndef DOSBOX_MEM_H
#include "mem.h"
#endif
typedef Bitu (*CallBack_Handler)(void);
extern CallBack_Handler CallBack_Handlers[];
enum { CB_RETN,CB_RETF,CB_RETF8,CB_IRET,CB_IRETD,CB_IRET_STI,CB_IRET_EOI_PIC1,
CB_IRQ0,CB_IRQ1,CB_IRQ9,CB_IRQ12,CB_IRQ12_RET,CB_IRQ6_PCJR,CB_MOUSE,
CB_INT29,CB_INT16,CB_HOOKABLE,CB_TDE_IRET,CB_IPXESR,CB_IPXESR_RET,
CB_INT21,CB_INT13 };
#define CB_MAX 128
#define CB_SIZE 32
#define CB_SEG 0xF000
#define CB_SOFFSET 0x1000
enum {
CBRET_NONE=0,CBRET_STOP=1
};
extern Bit8u lastint;
static INLINE RealPt CALLBACK_RealPointer(Bitu callback) {
return RealMake(CB_SEG,(Bit16u)(CB_SOFFSET+callback*CB_SIZE));
}
static INLINE PhysPt CALLBACK_PhysPointer(Bitu callback) {
return PhysMake(CB_SEG,(Bit16u)(CB_SOFFSET+callback*CB_SIZE));
}
static INLINE PhysPt CALLBACK_GetBase(void) {
return (CB_SEG << 4) + CB_SOFFSET;
}
Bitu CALLBACK_Allocate();
void CALLBACK_Idle(void);
void CALLBACK_RunRealInt(Bit8u intnum);
void CALLBACK_RunRealFar(Bit16u seg,Bit16u off);
bool CALLBACK_Setup(Bitu callback,CallBack_Handler handler,Bitu type,const char* descr);
Bitu CALLBACK_Setup(Bitu callback,CallBack_Handler handler,Bitu type,PhysPt addr,const char* descr);
const char* CALLBACK_GetDescription(Bitu callback);
bool CALLBACK_Free(Bitu callback);
void CALLBACK_SCF(bool val);
void CALLBACK_SZF(bool val);
void CALLBACK_SIF(bool val);
extern Bitu call_priv_io;
class CALLBACK_HandlerObject{
private:
bool installed;
Bitu m_callback;
enum {NONE,SETUP,SETUPAT} m_type;
struct {
RealPt old_vector;
Bit8u interrupt;
bool installed;
} vectorhandler;
public:
CALLBACK_HandlerObject():installed(false),m_type(NONE) {
vectorhandler.installed=false;
}
~CALLBACK_HandlerObject();
//Install and allocate a callback.
void Install(CallBack_Handler handler,Bitu type,const char* description);
void Install(CallBack_Handler handler,Bitu type,PhysPt addr,const char* description);
void Uninstall();
//Only allocate a callback number
void Allocate(CallBack_Handler handler,const char* description=0);
Bit16u Get_callback() {
return (Bit16u)m_callback;
}
RealPt Get_RealPointer() {
return CALLBACK_RealPointer(m_callback);
}
void Set_RealVec(Bit8u vec);
};
#endif
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