Supermodel/Src/Debugger/CPU/Musashi68KDebug.h

/**
 ** Supermodel
 ** A Sega Model 3 Arcade Emulator.
 ** Copyright 2011 Bart Trzynadlowski, Nik Henson
 **
 ** This file is part of Supermodel.
 **
 ** Supermodel 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.
 **
 ** Supermodel 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 Supermodel.  If not, see <http://www.gnu.org/licenses/>.
 **/

/*
 * Musashi68KDebug.h
 */

#ifdef SUPERMODEL_DEBUGGER
#ifndef INCLUDED_MUSASHI68KDEBUG_H
#define INCLUDED_MUSASHI68KDEBUG_H

#include "68KDebug.h"
#include "CPU/Bus.h"
#include "CPU/68K/68K.h"
#include "Types.h"

// TODO - can't get this namespace to work with 68K.h for some reason - strange Visual Studio errors
namespace Debugger
{
	/*
	 * CCPUDebug implementation for the Musashi Motorola 68000 emulator.
	 */
	class CMusashi68KDebug : public C68KDebug, public ::IBus
	{
	private:
		static UINT32 GetReg(CCPUDebug *cpu, unsigned id);

		static bool SetReg(CCPUDebug *cpu, unsigned id, UINT32 data);

		M68KCtx *m_ctx;
		UINT32 m_resetAddr;

		M68KCtx m_savedCtx;

		::IBus *m_bus;

		// Inlined methods

		void SetM68KContext()
		{
			M68KGetContext(&m_savedCtx);
			if (m_savedCtx.Debug != this)
				M68KSetContext(m_ctx);
		}

		void UpdateM68KContext(M68KCtx *ctx)
		{
			m_ctx = ctx;
		}

		void RestoreM68KContext()
		{
			if (m_savedCtx.Debug != this)
				M68KSetContext(&m_savedCtx);
		}

	protected:
		UINT32 GetSP();

	public:
		CMusashi68KDebug(const char *name, M68KCtx *m68K);

		virtual ~CMusashi68KDebug();

		// CCPUDebug methods

		void AttachToCPU();

		void DetachFromCPU();

		UINT32 GetResetAddr();

		bool UpdatePC(UINT32 pc);

		bool ForceException(CException *ex);

		bool ForceInterrupt(CInterrupt *in);

		UINT64 ReadMem(UINT32 addr, unsigned dataSize);

		bool WriteMem(UINT32 addr, unsigned dataSize, UINT64 data);

		// IBus methods
		
		UINT8 Read8(UINT32 addr);

		void Write8(UINT32 addr, UINT8 data);
		
		UINT16 Read16(UINT32 addr);

		void Write16(UINT32 addr, UINT16 data);
		
		UINT32 Read32(UINT32 addr);

		void Write32(UINT32 addr, UINT32 data);
	};
}

#endif	// INCLUDED_MUSASHI68KDEBUG_H
#endif  // SUPERMODEL_DEBUGGER