/*   `Deep Thought', a softcore CPU implemented on a FPGA

    Copyright (C) 2010 Markus Hofstaetter <markus.manrow@gmx.at>
    Copyright (C) 2010 Martin Perner <e0725782@student.tuwien.ac.at>
    Copyright (C) 2010 Stefan Rebernig <stefan.rebernig@gmail.com>
    Copyright (C) 2010 Manfred Schwarz <e0725898@student.tuwien.ac.at>
    Copyright (C) 2010 Bernhard Urban <lewurm@gmail.com>

    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 3 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, see <http://www.gnu.org/licenses/>. */

#ifndef __CPU__H__
#define __CPU__H__

#include "cdat.hpp"
#include "cmem.hpp"
#include "cpmem.hpp"

#include "ccolor.h"

class Iinstr;
class Iext;

#include "iext.hpp"
#include <boost/regex.hpp>
#include "Iinstr.hpp"


class CCpu {
	private:

		bool m_Z, m_S, m_C, m_O, m_breakNext;

		CDat m_pc, m_pc_next, m_perf;
		CMem<CDat> m_reg, m_ram;
		CPMem<Iinstr*> m_prog;

		vector<Iext*> m_exts;

		CDat m_stack;

		static const int EXT_MODEL_OFFSET = 0x2000;

	public:
		void registerExtension() {};
		void applyToExtensions(const vector<string>& in);
		void tick();

		void breakNext();
		bool shouldBreak();

		CDat getRegister(const int) const;
		void setRegister(const int, CDat);

		CDat getRAM(const int) const;
		void setRAM(const int, CDat);

		Iinstr* getProg(const int) const;
		void setProg(const int, Iinstr*);

		void registerExtension(Iext*);

		CDat getPerf() const;
		void setPerf(CDat);
		void incPerf();
		void incPerfBy(short);

		CDat getCurPC() const;
		CDat getNextPC() const;
		void setNextPC(CDat);

		CDat getFlags() const;
		void setFlags(CDat);
		/* will only change zero and sign */
		void updateFlags(CDat);
		/* will change all flags */
		void updateFlags(CDatd, CDat, CDat);
		/* will change all flags */
		void updateFlags(bool z, bool o, bool c, bool s);
		/* will change carry */
		void updateCarry(bool c);

		bool getCarry();

		bool conditionMet(short);

		int getStack() const;
		void setStack(const int);

		string colorifyInstr(string instr);

		CCpu(int,int,int);

};


#endif