00001 package gov.nasa.arc.ase.jpf.jvm.bytecode;
00002
00003 import gov.nasa.arc.ase.jpf.*;
00004 import gov.nasa.arc.ase.jpf.jvm.*;
00005 import de.fub.bytecode.generic.InstructionHandle;
00006 import gov.nasa.arc.ase.util.Debug;
00007
00008 public class LCMP extends AbstractInstruction {
00009 private de.fub.bytecode.generic.LCMP peer;
00010
00011 public InstructionHandle execute(SystemState ss, KernelState ks, ThreadInfo th) {
00012 long v1 = th.pop2();
00013 long v2 = th.pop2();
00014
00015 if (v1 == v2)
00016 th.push(0);
00017 else if (v2 > v1)
00018 th.push(1);
00019 else
00020 th.push(-1);
00021
00022 return th.getPC().getNext();
00023 }
00024 public void setPeer(de.fub.bytecode.generic.Instruction i) {
00025 peer = (de.fub.bytecode.generic.LCMP)i;
00026 }
00027 }
