00001 package gov.nasa.arc.ase.jpf.jvm.bytecode;
00002
00003 import de.fub.bytecode.classfile.ConstantPool;
00004 import gov.nasa.arc.ase.jpf.jvm.SystemState;
00005 import gov.nasa.arc.ase.jpf.jvm.KernelState;
00006 import gov.nasa.arc.ase.jpf.jvm.ThreadInfo;
00007 import gov.nasa.arc.ase.util.Debug;
00008 import de.fub.bytecode.generic.InstructionHandle;
00009
00010 public class TABLESWITCH extends Instruction {
00011 private int target;
00012 private int[] matches;
00013 private int[] targets;
00014
00015 public Instruction execute(SystemState ss, KernelState ks, ThreadInfo th) {
00016 int value = th.pop();
00017
00018 for(int i = 0, l = matches.length; i < l; i++)
00019 if (value == matches[i])
00020 return th.getMethod().getInstructionAt(targets[i]);
00021
00022 return th.getMethod().getInstructionAt(target);
00023 }
00024 public void setPeer(de.fub.bytecode.generic.Instruction i, ConstantPool cp) {
00025 target = ((de.fub.bytecode.generic.TABLESWITCH)i).getTarget().getPosition();
00026 matches = ((de.fub.bytecode.generic.TABLESWITCH)i).getMatchs();
00027 int length = matches.length;
00028 targets = new int[length];
00029 InstructionHandle[] ih = ((de.fub.bytecode.generic.TABLESWITCH)i).getTargets();
00030
00031 for(int j = 0; j < length; j++)
00032 targets[j] = ih[j].getPosition();
00033 }
00034 }
