gbatimer.h

一个任天堂掌上游戏机NDS的源代码

/**************************************************************************
* DSemu - The Next Generation                                             *
* GBA interval timer: Class definition [gbatimer.h]                       *
* Copyright Imran Nazar, 2005; released under the BSD public licence.     *
**************************************************************************/

#ifndef __GBATIMER_H_
#define __GBATIMER_H_

#include "defs.h"
#include "plgbase.h"
#include "plgmmu32.h"
#include "plgcpu.h"
#include "plggui.h"

// Nothing particularly special about this plugin, no specific interface.
class gbaTimer : public Plugin {
    public:
        gbaTimer(std::string, REQPTR, UNREQPTR);
	~gbaTimer();
	
        PLUGININFO *getinfo();
	void reset();
	void release();
	void status(int, int);

    private:
        //---Plugin-generic stuff
        std::string pName, pClass;
        REQPTR pRequest;
        UNREQPTR pUnrequest;
	static PLUGININFO pInfo;
        
        static std::string pluginName;

	// Defintion of an I/O register
        typedef struct {
	    union {
		u8 b[4];
		u16 h[2];
		u32 w;
	    };
	} IOREG;

	static void post(int);
	static void check(int,int);
	static void post0(Plugin*);
	static void post1(Plugin*);
	static void post2(Plugin*);
	static void post3(Plugin*);

	static MMU32Plugin *MMU;
	static CPUPlugin *CPU;
	static GUIPlugin *GUI;
	static gbaTimer *cls;

	// I/O access handlers
	static u8 rdB(u32);
	static u16 rdH(u32);
	static u32 rdW(u32);
	static void wrB(u32,u8), wrH(u32,u16), wrW(u32,u32);
		
	static IOREG reg[4];
	static u16 counter[4];
	static u16 limits[4];
	static u32 shifts[4];
	static u16 oldf[4];
	static uint64_t cntTimestamps[4];
};

#endif//__GBATIMER_H_

/*** EOF: gbatimer.h *****************************************************/