CALOAD.java Source File

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.jpf.jvm.ElementInfo;
00008 import gov.nasa.arc.ase.util.Debug;
00009 //#ifdef RACE
00010 
00011 //#endif RACE
00012 
00013 public class CALOAD extends Instruction {
00014   public Instruction execute(SystemState ss, KernelState ks, ThreadInfo th) {
00015     int index = th.pop();
00016     int arrayRef = th.pop();
00017 
00018     if(arrayRef == -1)
00019       return th.createAndThrowException("java.lang.NullPointerException");
00020 
00021     ElementInfo e = ks.da.get(arrayRef);
00022 
00023     if(e.outOfBounds(index))
00024       return th.createAndThrowException("java.lang.ArrayIndexOutOfBoundsException");
00025 
00026     th.push(e.getField(index), false);
00027 
00028 //#ifdef RACE
00029 
00030 
00031 //#endif RACE
00032 
00033     return th.getPC().getNext();
00034   }  
00035   public void setPeer(de.fub.bytecode.generic.Instruction i, ConstantPool cp) {
00036   }  
00037 }