LongImmediateRegisterState.hh

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/*
    Copyright (c) 2002-2009 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
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/**
 * @file LongImmediateRegisterState.hh
 *
 * Declaration of LongImmediateRegisterState class.
 *
 * @author Jussi Nykänen 2004 (nykanen-no.spam-cs.tut.fi)
 * @author Pekka Jääskeläinen 2005 (pjaaskel-no.spam-cs.tut.fi)
 * @note rating: red
 */
 
#ifndef TTA_LONG_IMMEDIATE_REGISTER_STATE_HH
#define TTA_LONG_IMMEDIATE_REGISTER_STATE_HH
 
#include <string>
 
#include "StateData.hh"
 
class LongImmediateUnitState;
class SimValue;
 
/**
 * Represents a register of a long immediate unit.
 */
class LongImmediateRegisterState : public StateData {
public:
    LongImmediateRegisterState(
        LongImmediateUnitState* parent, 
        int index,
        int width,
        bool signExtend);
    virtual ~LongImmediateRegisterState();
 
    virtual void setValue(const SimValue& value);
    virtual const SimValue& value() const;
 
private:
    /// Copying not allowed.
    LongImmediateRegisterState(const LongImmediateRegisterState&);
    /// Assignment not allowed.
    LongImmediateRegisterState& operator=(const LongImmediateRegisterState&);
 
    /// Parent unit of the register state.
    LongImmediateUnitState* parent_;
    /// Index of the register.
    int index_;
    /// The bit width of the register (needed only while extending).
    int width_;
    /// True in case the written values should be sign extended.
    bool signExtend_;
};
 
#endif