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 FCMPL extends AbstractInstruction {
00009 private de.fub.bytecode.generic.FCMPL peer;
00010
00011 public InstructionHandle execute(SystemState ss, KernelState ks, ThreadInfo th) {
00012 float v1 = Types.intToFloat(th.pop());
00013 float v2 = Types.intToFloat(th.pop());
00014
00015 if (Float.isNaN(v1) || Float.isNaN(v2))
00016 th.push(-1);
00017 if (v1 == v2)
00018 th.push(0);
00019 else if (v2 > v1)
00020 th.push(1);
00021 else
00022 th.push(-1);
00023
00024 return th.getPC().getNext();
00025 }
00026 public void setPeer(de.fub.bytecode.generic.Instruction i) {
00027 peer = (de.fub.bytecode.generic.FCMPL)i;
00028 }
00029 }
