Package mars.mips.hardware

Class Register

java.lang.Object

mars.mips.hardware.Register

public class Register
extends Object

Abstraction to represent a register of a MIPS Assembler.

Version:

June 2003

Author:

Jason Bumgarner, Jason Shrewsbury, Ben Sherman

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	Register.Listener

Constructor Summary

Constructors

Constructor	Description
Register(String name, int number, int defaultValue)	Creates a new register with specified name, number, and value.

Method Summary

Modifier and Type	Method	Description
void	addListener(Register.Listener listener)
int	getDefaultValue()	Returns the default (initial) value of the register.
Register.Listener[]	getListeners()
String	getName()	Returns the name of the register.
int	getNumber()	Returns the number of the register.
int	getValue()	Gets the value of the register, notifying listeners.
int	getValueNoNotify()	Gets the value of the register without notifying listeners.
void	removeListener(Register.Listener listener)
void	resetValueToDefault()	Resets the value of the register to the value it was constructed with.
void	setDefaultValue(int defaultValue)	Change the register's default value, the value to which it will be set when resetValueToDefault() is called.
int	setValue(int value)	Sets the value of the register, notifying listeners.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Register

public Register(String name,
 int number,
 int defaultValue)

Creates a new register with specified name, number, and value.

Parameters:

name - The name of the register.

number - The number of the register.

defaultValue - The default (and initial) value of the register.

Method Details

getName

public String getName()

Returns the name of the register.

Returns:

The name of the register.

getNumber

public int getNumber()

Returns the number of the register.

Returns:

The number of the register.

getDefaultValue

public int getDefaultValue()

Returns the default (initial) value of the register.

Returns:

The default value of the register.

setDefaultValue

public void setDefaultValue(int defaultValue)

Change the register's default value, the value to which it will be set when resetValueToDefault() is called.

getValue

public int getValue()

Gets the value of the register, notifying listeners.

Returns:

The value of the register.

getValueNoNotify

public int getValueNoNotify()

Gets the value of the register without notifying listeners.

Returns:

The value of the register.

setValue

public int setValue(int value)

Sets the value of the register, notifying listeners.

Parameters:

value - Value to set the register to.

Returns:

Previous value of the register.

resetValueToDefault

public void resetValueToDefault()

Resets the value of the register to the value it was constructed with. Listeners are not notified.

addListener

public void addListener(Register.Listener listener)

removeListener

public void removeListener(Register.Listener listener)

getListeners

public Register.Listener[] getListeners()