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/* -*- mode: C++; tab-width: 4 -*- */
/* ===================================================================== *\
Copyright (c) 1998-2001 Palm, Inc. or its subsidiaries.
All rights reserved.
This file is part of the Palm OS Emulator.
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.
\* ===================================================================== */
#ifndef EmCPU_h
#define EmCPU_h
class EmSession;
class SessionFile;
class EmCPU;
extern EmCPU* gCPU;
class EmCPU
{
public:
// -----------------------------------------------------------------------------
// constructor / destructor
// -----------------------------------------------------------------------------
EmCPU (EmSession*);
virtual ~EmCPU (void);
// -----------------------------------------------------------------------------
// public methods
// -----------------------------------------------------------------------------
// Standard sub-system methods:
// Reset: Resets the state. Called on hardware resets or on
// calls to SysReset. Also called from constructor.
// Save: Saves the state to the given file.
// Load: Loads the state from the given file. Can assume that
// Reset has been called first.
virtual void Reset (Bool hardwareReset);
virtual void Save (SessionFile&);
virtual void Load (SessionFile&);
// Execute the main CPU loop until asked to stop.
virtual void Execute (void) = 0;
virtual void CheckAfterCycle (void) = 0;
// Low-level access to CPU state.
virtual emuptr GetPC (void) = 0;
virtual emuptr GetSP (void) = 0;
virtual uint32 GetRegister (int) = 0;
virtual void SetPC (emuptr) = 0;
virtual void SetSP (emuptr) = 0;
virtual void SetRegister (int, uint32) = 0;
virtual Bool Stopped (void) = 0;
protected:
EmSession* fSession;
};
#endif /* EmCPU_h */
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