NullRegisterState Class Reference

#include <RegisterState.hh>

Inheritance diagram for NullRegisterState:

Collaboration diagram for NullRegisterState:

Public Member Functions
virtual	~NullRegisterState ()
virtual void	setValue (const SimValue &value)
virtual const SimValue &	value () const
Public Member Functions inherited from RegisterState
	RegisterState (int width, bool constantZero=false)
	RegisterState (SimValue &sharedRegister)
virtual	~RegisterState ()
Public Member Functions inherited from StateData
	StateData ()
virtual	~StateData ()
Public Member Functions inherited from WritableState
	WritableState ()
virtual	~WritableState ()
Public Member Functions inherited from ReadableState
	ReadableState ()
virtual	~ReadableState ()

Static Public Member Functions
static NullRegisterState &	instance ()

Private Member Functions
	NullRegisterState ()
	NullRegisterState (const NullRegisterState &)
	Copying not allowed.
NullRegisterState &	operator= (const NullRegisterState &)
	Assignment not allowed.

Static Private Attributes
static NullRegisterState *	instance_ = NULL
	Unique instance of NullRegisterState.

Additional Inherited Members
Protected Attributes inherited from RegisterState
SimValue &	value_
	Value of the RegisterState.

Detailed Description

Models non-existing RegisterState.

Definition at line 83 of file RegisterState.hh.

Constructor & Destructor Documentation

~NullRegisterState()

NullRegisterState::~NullRegisterState ( )

virtual

Destructor.

Definition at line 124 of file RegisterState.cc.

                                      {
}

NullRegisterState() [1/2]

NullRegisterState::NullRegisterState ( )

private

Constructor.

Definition at line 118 of file RegisterState.cc.

                                     : RegisterState(0) {
}

Referenced by instance().

NullRegisterState() [2/2]

NullRegisterState::NullRegisterState ( const NullRegisterState &  )

private

Copying not allowed.

Member Function Documentation

instance()

NullRegisterState & NullRegisterState::instance ( )

static

Returns instance of NullRegisterState.

Returns

The instance of NullRegisterState.

Definition at line 108 of file RegisterState.cc.

                            {
    if (instance_ == NULL) {
        instance_ = new NullRegisterState();
    }
    return *instance_;
}

References instance_, and NullRegisterState().

Referenced by NullRegisterFileState::registerState().

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operator=()

NullRegisterState & NullRegisterState::operator= ( const NullRegisterState &  )

private

Assignment not allowed.

setValue()

void NullRegisterState::setValue ( const SimValue &  value )

virtual

Aborts the program with error message.

Reimplemented from RegisterState.

Definition at line 131 of file RegisterState.cc.

                                           {
    Application::abortWithError("setValue()");
}

value()

const SimValue & NullRegisterState::value ( ) const

virtual

Aborts the program with error message.

Returns

Never returns.

Reimplemented from RegisterState.

Definition at line 141 of file RegisterState.cc.

                               {
    Application::abortWithError("value()");
    return NullSimValue::instance();
}

References NullSimValue::instance().

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Member Data Documentation

instance_

NullRegisterState * NullRegisterState::instance_ = NULL

staticprivate

Unique instance of NullRegisterState.

Definition at line 100 of file RegisterState.hh.

Referenced by instance().

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The documentation for this class was generated from the following files:

• RegisterState.hh
• RegisterState.cc