joeq.Allocator
Class CodeAllocator.InstructionPointer

java.lang.Object
  joeq.Allocator.CodeAllocator.InstructionPointer

All Implemented Interfaces:

Comparable

Enclosing class:

CodeAllocator

public static class CodeAllocator.InstructionPointer
extends Object
implements Comparable

An object of this class represents a code address. It can be compared with a jq_CompiledCode object with compareTo and equals. They are equal if the InstructionPointer points within the range of the compiled code; the InstructionPointer is less if it is before the start address of the compiled code; the InstructionPointer is less if it is after the end address of the compiled code.

Field Summary

static jq_InstanceField

_ip

Constructor Summary

CodeAllocator.InstructionPointer(CodeAddress ip)
Create a new instruction pointer.

Method Summary

int	compareTo(CodeAllocator.InstructionPointer that) Compare this instruction pointer to another instruction pointer.
int	compareTo(jq_CompiledCode that) Compare this instruction pointer to a compiled code object.
int	compareTo(Object that) Compares this instruction pointer to the given object (InstructionPointer or jq_CompiledCode)
boolean	equals(CodeAllocator.InstructionPointer that) Returns true if this instruction pointer refers to the same location as the given instruction pointer, false otherwise.
boolean	equals(jq_CompiledCode that) Returns true if this instruction pointer refers to a location within the given compiled code, false otherwise.
boolean	equals(Object that) Compares this instruction pointer with the given object (InstructionPointer or jq_CompiledCode).
CodeAddress	getIP() Extract the address of this instruction pointer.
int	hashCode() Returns the hash code of this instruction pointer.

Methods inherited from class java.lang.Object

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

Field Detail

_ip

public static final jq_InstanceField _ip

Constructor Detail

CodeAllocator.InstructionPointer

public CodeAllocator.InstructionPointer(CodeAddress ip)

Create a new instruction pointer.

Parameters:

ip - instruction pointer value

Method Detail

getIP

public CodeAddress getIP()

Extract the address of this instruction pointer.

Returns:

address of this instruction pointer

compareTo

public int compareTo(jq_CompiledCode that)

Compare this instruction pointer to a compiled code object.

Parameters:

that - compiled code to compare against

Returns:

-1 if this ip comes before the given code, 0 if it is inside the given code, 1 if it is after the given code

compareTo

public int compareTo(CodeAllocator.InstructionPointer that)

Compare this instruction pointer to another instruction pointer.

Parameters:

that - instruction pointer to compare against

Returns:

-1 if this ip is before the given ip, 0 if it is equal to the given ip, 1 if it is after the given ip

compareTo

public int compareTo(Object that)

Compares this instruction pointer to the given object (InstructionPointer or jq_CompiledCode)

Specified by:

compareTo in interface Comparable

Parameters:

that - object to compare to

Returns:

-1 if this is less than, 0 if this is equal, 1 if this is greater than

equals

public boolean equals(jq_CompiledCode that)

Returns true if this instruction pointer refers to a location within the given compiled code, false otherwise.

Parameters:

that - compiled code to compare to

Returns:

true if the instruction pointer is within, false otherwise

equals

public boolean equals(CodeAllocator.InstructionPointer that)

Returns true if this instruction pointer refers to the same location as the given instruction pointer, false otherwise.

Parameters:

that - instruction pointer to compare to

Returns:

true if the instruction pointers are equal, false otherwise

equals

public boolean equals(Object that)

Compares this instruction pointer with the given object (InstructionPointer or jq_CompiledCode).

Overrides:

equals in class Object

Parameters:

that - object to compare with

Returns:

true if these objects are equal, false otherwise

hashCode

public int hashCode()

Returns the hash code of this instruction pointer. This is a really bad implementation (just returns 0), and should not be counted on.

Overrides:

hashCode in class Object

Returns:

hash code