#ifndef __CPU_H__
#define __CPU_H__

#ifndef _SETJMP_H
#include <setjmp.h>
#endif

class CPU: public Checkpointable {
public:
	virtual Memory::address run(unsigned instructions) =0;
	virtual void reset () =0;
	virtual Memory::address step() =0;
	virtual void raise (int level) =0;
	virtual char *status () =0;

	typedef void (*statfn) (const char *, ...);

	virtual void checkpoint(Stream &s) = 0;
	virtual void restore(Stream &s) = 0;

	void debug() { _debug = !_debug; }

protected:
	CPU (Memory *m, jmp_buf *e, statfn s): _memory(m), _err(e), _status(s){}
	Memory *_memory;
	jmp_buf *_err;
	statfn _status;
	bool _debug;
};
#endif