Mercurial > hg > Members > kono > jpf-core

comparison src/main/gov/nasa/jpf/jvm/bytecode/ATHROW.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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-1:000000000000 0:61d41facf527
1 /*
2 * Copyright (C) 2014, United States Government, as represented by the
3 * Administrator of the National Aeronautics and Space Administration.
4 * All rights reserved.
5 *
6 * The Java Pathfinder core (jpf-core) platform is licensed under the
7 * Apache License, Version 2.0 (the "License"); you may not use this file except
8 * in compliance with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0.
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package gov.nasa.jpf.jvm.bytecode;
19
20 import gov.nasa.jpf.vm.Instruction;
21 import gov.nasa.jpf.vm.MJIEnv;
22 import gov.nasa.jpf.vm.StackFrame;
23 import gov.nasa.jpf.vm.ThreadInfo;
24
25
26 /**
27 * Throw exception or error
28 * ..., objectref => objectref
29 */
30 public class ATHROW extends Instruction implements JVMInstruction {
31
32 @Override
33 public Instruction execute (ThreadInfo ti) {
34 StackFrame frame = ti.getModifiableTopFrame();
35
36 int objref = frame.pop();
37
38 if (objref == MJIEnv.NULL) {
39 return ti.createAndThrowException("java.lang.NullPointerException");
40 }
41
42 return ti.throwException(objref);
43 }
44
45 @Override
46 public int getByteCode () {
47 return 0xBF;
48 }
49
50 @Override
51 public void accept(JVMInstructionVisitor insVisitor) {
52 insVisitor.visit(this);
53 }
54 }