RegisterState Class Reference

#include <RegisterState.hh>

Inheritance diagram for RegisterState:

Collaboration diagram for RegisterState:

Public Member Functions
	RegisterState (int width, bool constantZero=false)
	RegisterState (SimValue &sharedRegister)
virtual	~RegisterState ()
virtual void	setValue (const SimValue &value)
virtual const SimValue &	value () const
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 ()

Protected Attributes
SimValue &	value_
	Value of the RegisterState. More...

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

Private Attributes
bool	shared_
	Is the storage of this RegisterState shared with someone else? More...
bool	constantZero_
	Is this register constant zero? More...

Detailed Description

Class that represents the contents of a register.

Definition at line 50 of file RegisterState.hh.

Constructor & Destructor Documentation

RegisterState() [1/3]

RegisterState::RegisterState	(	int	width,
		bool	constantZero = false
	)

Constructor.

Parameters

width	The width of the register.
constantZero	Tells whether the register is constant zero

Definition at line 50 of file RegisterState.cc.

                                                         : 
    StateData(), value_(*(new SimValue(width))), shared_(false),
    constantZero_(constantZero) {
}

RegisterState() [2/3]

RegisterState::RegisterState

(

SimValue &

sharedRegister

)

Constructor for RegisterState which shares the actual register storage.

Parameters

sharedRegister

The register which is shared with this.

Definition at line 60 of file RegisterState.cc.

                                                     : 
    StateData(), value_(sharedRegister), shared_(true),
    constantZero_(false) {
}

~RegisterState()

RegisterState::~RegisterState ( )

virtual

Destructor.

Definition at line 68 of file RegisterState.cc.

                              {
    if (!shared_) {
        delete &value_;
    }
}

References shared_, and value_.

RegisterState() [3/3]

RegisterState::RegisterState ( const RegisterState &  )

private

Copying not allowed.

Member Function Documentation

operator=()

RegisterState& RegisterState::operator= ( const RegisterState &  )

private

Assignment not allowed.

setValue()

void RegisterState::setValue ( const SimValue &  value )

virtual

Sets the value for the register.

Parameters

value

Value to be set.

Implements WritableState.

Reimplemented in NullBusState, NullRegisterState, NullPortState, OpcodeSettingVirtualInputPortState, TriggeringInputPortState, and BusState.

Definition at line 80 of file RegisterState.cc.

                                             {
    if (!constantZero_) {
        value_ = value;
    } 
}

References constantZero_, value(), and value_.

Referenced by SimpleOperationExecutor::advanceClock(), ExecutingOperation::PendingResult::advanceCycle(), RFTestbenchGenerator::createStimulus(), SimProgramBuilder::processMove(), BusState::setValue(), TriggeringInputPortState::setValue(), OpcodeSettingVirtualInputPortState::setValue(), and FUTestbenchGenerator::writeInputPortStimulus().

Here is the call graph for this function:

value()

const SimValue & RegisterState::value ( ) const

virtual

Returns the value of the register.

Returns

The value of the register.

Implements ReadableState.

Reimplemented in NullBusState, NullRegisterState, NullPortState, and OpcodeSettingVirtualInputPortState.

Definition at line 92 of file RegisterState.cc.

                           {
    return value_;
}

References value_.

Referenced by RFTestbenchGenerator::createStimulus(), ProximBusDetailsCmd::Do(), ProximFUDetailsCmd::Do(), ProximFUPortDetailsCmd::Do(), ProximRFDetailsCmd::Do(), InfoSegmentsCommand::execute(), ExecutableMove::executeWrite(), BusTracker::handleEvent(), ProximRegisterWindow::loadRegisterFile(), FUTestbenchGenerator::readValuesFromOutPorts(), BusState::setValue(), setValue(), TriggeringInputPortState::setValue(), SimpleOperationExecutor::startOperation(), MultiLatencyOperationExecutor::startOperation(), ProximPortWindow::update(), OpcodeSettingVirtualInputPortState::value(), BusState::width(), and FUTestbenchGenerator::writeInputPortStimulus().

Member Data Documentation

constantZero_

bool RegisterState::constantZero_

private

Is this register constant zero?

Definition at line 73 of file RegisterState.hh.

Referenced by setValue().

shared_

bool RegisterState::shared_

private

Is the storage of this RegisterState shared with someone else?

Definition at line 71 of file RegisterState.hh.

Referenced by ~RegisterState().

value_

SimValue& RegisterState::value_

protected

Value of the RegisterState.

Todo:

Fix this mutable mess. It's needed because OutputPortState needs to mask the value_ in its value() implementation.

Definition at line 63 of file RegisterState.hh.

Referenced by setValue(), value(), and ~RegisterState().

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

• RegisterState.hh
• RegisterState.cc