public
abstract
class
implements IInsnEmulator<T extends IInstructionOperand>
InsnEmulator
extends Objectimplements IInsnEmulator<T extends IInstructionOperand>
| java.lang.Object | |
| ↳ | com.pnfsoftware.jeb.core.units.code.asm.simulator.InsnEmulator<T extends com.pnfsoftware.jeb.core.units.code.IInstructionOperand> |
Class Overview
Main class that can emulate an instruction and retrieve the correct result. It is based on:
- UPDATE_*** which provides the field(s) to be updated
- JUMP_*** which computes the new value to assign
Summary
| Constants | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| int | JUMP_LAST_OPERAND | ||||||||||
| int | JUMP_MASK | What is the new value: from 0x0100 to 0xFF00 | |||||||||
| int | LINK | saves the return address in LR | |||||||||
| int | NO_FLAG | ||||||||||
| int | UPDATE_MASK | What is updated: from 0x00 to 0xFF | |||||||||
| int | UPDATE_NONE | ||||||||||
| int | UPDATE_PC | Always Jump | |||||||||
| Public Constructors | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| InsnEmulator(int flags) | |||||||||||
| Public Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| IInsnEmulator.BranchType |
getBranchType()
Return BranchType (JUMP or LINK).
| ||||||||||
| int | getFlags() | ||||||||||
| boolean |
isPCUpdated()
Indicate if the instruction can update the PC (by another address than the following one).
| ||||||||||
|
[Expand]
Inherited Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
From class
java.lang.Object
| |||||||||||
|
From interface
com.pnfsoftware.jeb.core.units.code.asm.simulator.IInsnEmulator
| |||||||||||
Constants
public static final int JUMP_LAST_OPERAND
Constant Value:
256
(0x00000100)
public static final int JUMP_MASK
What is the new value: from 0x0100 to 0xFF00
Constant Value:
65280
(0x0000ff00)
public static final int LINK
saves the return address in LR
Constant Value:
65536
(0x00010000)
public static final int NO_FLAG
Constant Value:
0
(0x00000000)
public static final int UPDATE_MASK
What is updated: from 0x00 to 0xFF
Constant Value:
255
(0x000000ff)
public static final int UPDATE_NONE
Constant Value:
0
(0x00000000)
public static final int UPDATE_PC
Always Jump
Constant Value:
1
(0x00000001)
Public Constructors
public InsnEmulator (int flags)
Public Methods
public IInsnEmulator.BranchType getBranchType ()
Return BranchType (JUMP or LINK). See later if more is needed.
public int getFlags ()
public boolean isPCUpdated ()
Indicate if the instruction can update the PC (by another address than the following one).