Register (Serviceability Agent API)

java.lang.Object
- sun.jvm.hotspot.asm.Operand
- - sun.jvm.hotspot.asm.ImmediateOrRegister
  - - sun.jvm.hotspot.asm.Register

Direct Known Subclasses:

SPARCRegister
```
public abstract class Register
extends ImmediateOrRegister
```
Register is an abstraction over machine registers.

FIXME: should align constants with underlying VM code

Field Summary

Fields
Modifier and Type Field and Description

protected int number
Corresponds to the machine register code.

Fields
Modifier and Type	Field and Description
`protected int`	`number` Corresponds to the machine register code.

Constructor Summary

Constructors
Constructor and Description

Register()

Register(int number)

Constructors
Constructor and Description
`Register()`
`Register(int number)`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`equals(java.lang.Object x)`
`int`	`getNumber()`
`abstract int`	`getNumberOfRegisters()` Must be overridden by subclass to indicate number of available registers on this platform
`int`	`hashCode()`
`abstract boolean`	`isFloat()`
`abstract boolean`	`isFramePointer()`
`boolean`	`isRegister()`
`abstract boolean`	`isStackPointer()`
`boolean`	`isValid()`

Methods inherited from class sun.jvm.hotspot.asm.Operand
isAddress, isImmediate

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - number
```
protected int number
```
    Corresponds to the machine register code. -1 stands for invalid register (initial value).
- Constructor Detail
  - Register
```
public Register()
```
  - Register
```
public Register(int number)
```
- Method Detail
  - getNumberOfRegisters
```
public abstract int getNumberOfRegisters()
```
    Must be overridden by subclass to indicate number of available registers on this platform
  - isValid
```
public boolean isValid()
```
  - getNumber
```
public int getNumber()
```
  - equals
```
public boolean equals(java.lang.Object x)
```
    Overrides:
    
    equals in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - isRegister
```
public boolean isRegister()
```
    Overrides:
    
    isRegister in class Operand
  - isStackPointer
```
public abstract boolean isStackPointer()
```
  - isFramePointer
```
public abstract boolean isFramePointer()
```
  - isFloat
```
public abstract boolean isFloat()
```

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Class Register

Field Summary

Constructor Summary

Method Summary

Methods inherited from class sun.jvm.hotspot.asm.Operand

Methods inherited from class java.lang.Object

Field Detail

number

Constructor Detail

Register

Register

Method Detail

getNumberOfRegisters

isValid

getNumber

equals

hashCode

isRegister

isStackPointer

isFramePointer

isFloat