sandmark.watermark.objectwm
Class InstructionEmbedUtil

java.lang.Object
  |
  +--sandmark.watermark.objectwm.InstructionEmbedUtil

public class InstructionEmbedUtil

extends java.lang.Object

This class builds all the functionalities required for embedding a new instruction group to increase the vector frequency

Field Summary

(package private) ObjectHelper	helper
de.fub.bytecode.generic.InstructionHandle	ihNewInstrEmbedObj
int	newInstrIndexObj
(package private) ObjectUtil	util

Constructor Summary

InstructionEmbedUtil(ObjectUtil objUtil)
Constructor

Method Summary

boolean	checkSplitVectorGrp(int instrIndex, de.fub.bytecode.generic.InstructionHandle[] instrHandles) This method checks whether the code to be inserted splits any existing vector groups; returns 'true' if splits, else returns 'false'
(package private) void	displayLeaders(int numleaders, int[] leaders) displaying leader information of the method cfg
int	substituteNewCode(java.lang.String[] subInstr, int numInstr, int codeBookembedIndex, VectorUpdateCtrl vecObj) This method is invoked from the newCode Insertion option in modifyCode():
java.lang.String	transformCode(java.lang.String subInstr, java.lang.String className) Converts the received code to the actual code to be inserted by placing appropriate local variable indices etc etc; methodsInvoked: inLocalTable(String),

Methods inherited from class java.lang.Object

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

Field Detail

util

ObjectUtil util

helper

ObjectHelper helper

ihNewInstrEmbedObj

public de.fub.bytecode.generic.InstructionHandle ihNewInstrEmbedObj

newInstrIndexObj

public int newInstrIndexObj

Constructor Detail

InstructionEmbedUtil

public InstructionEmbedUtil(ObjectUtil objUtil)

Constructor

Method Detail

transformCode

public java.lang.String transformCode(java.lang.String subInstr,
                                      java.lang.String className)

Converts the received code to the actual code to be inserted by placing appropriate local variable indices etc etc; methodsInvoked: inLocalTable(String),

checkSplitVectorGrp

public boolean checkSplitVectorGrp(int instrIndex,
                                   de.fub.bytecode.generic.InstructionHandle[] instrHandles)

This method checks whether the code to be inserted splits any existing vector groups; returns 'true' if splits, else returns 'false'

displayLeaders

void displayLeaders(int numleaders,
                    int[] leaders)

displaying leader information of the method cfg

substituteNewCode

public int substituteNewCode(java.lang.String[] subInstr,
                             int numInstr,
                             int codeBookembedIndex,
                             VectorUpdateCtrl vecObj)

This method is invoked from the newCode Insertion option in modifyCode():