00001 package gov.nasa.arc.ase.jpf.jvm.bytecode;
00002
00003 import de.fub.bytecode.classfile.ConstantPool;
00004 import de.fub.bytecode.generic.ConstantPoolGen;
00005 import gov.nasa.arc.ase.jpf.jvm.SystemState;
00006 import gov.nasa.arc.ase.jpf.jvm.KernelState;
00007 import gov.nasa.arc.ase.jpf.jvm.ThreadInfo;
00008 import gov.nasa.arc.ase.jpf.jvm.ClassInfo;
00009 import gov.nasa.arc.ase.jpf.jvm.MethodInfo;
00010 import gov.nasa.arc.ase.jpf.jvm.Types;
00011 import gov.nasa.arc.ase.util.Debug;
00012
00013 public class INVOKEVIRTUAL extends InvokeInstruction {
00014 public boolean examine(SystemState ss, KernelState ks, ThreadInfo th) {
00015 int objref = th.getCalleeThis(Types.getArgumentsSize(signature) + 1);
00016
00017 if(objref == -1)
00018 return false;
00019
00020 ClassInfo ci = ks.da.get(objref).getClassInfo();
00021 MethodInfo mi = ci.getDynamicMethod(mname);
00022
00023 return !mi.getClassInfo().isMethodDeterministic(th, mname);
00024 }
00025 public Instruction execute(SystemState ss, KernelState ks, ThreadInfo th) {
00026 int objref = th.getCalleeThis(Types.getArgumentsSize(signature) + 1);
00027
00028 if(objref == -1)
00029 return th.createAndThrowException("java.lang.NullPointerException");
00030
00031 ClassInfo ci = ks.da.get(objref).getClassInfo();
00032 MethodInfo mi = ci.getDynamicMethod(mname);
00033
00034 return mi.getClassInfo().executeMethod(th, mname);
00035 }
00036 public boolean isExecutable(SystemState ss, KernelState ks, ThreadInfo th) {
00037 int objref = th.getCalleeThis(Types.getArgumentsSize(signature) + 1);
00038
00039 if(objref == -1)
00040 return true;
00041
00042 ClassInfo ci = ks.da.get(objref).getClassInfo();
00043 MethodInfo mi = ci.getDynamicMethod(mname);
00044
00045 return mi.getClassInfo().isMethodExecutable(th, mname);
00046 }
00047 public void setPeer(de.fub.bytecode.generic.Instruction i, ConstantPool cp) {
00048 cname = ((de.fub.bytecode.generic.INVOKEVIRTUAL)i).getClassName(new ConstantPoolGen(cp));
00049 signature = ((de.fub.bytecode.generic.INVOKEVIRTUAL)i).getSignature(new ConstantPoolGen(cp));
00050 mname = ((de.fub.bytecode.generic.INVOKEVIRTUAL)i).getMethodName(new ConstantPoolGen(cp)) +
00051 signature;
00052 }
00053 }
