Mercurial > hg > Members > kono > jpf-core

comparison src/main/gov/nasa/jpf/jvm/bytecode/ANEWARRAY.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 /*
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.ClassInfo;
21 import gov.nasa.jpf.vm.ClassLoaderInfo;
22 import gov.nasa.jpf.vm.ElementInfo;
23 import gov.nasa.jpf.vm.Heap;
24 import gov.nasa.jpf.vm.Instruction;
25 import gov.nasa.jpf.vm.LoadOnJPFRequired;
26 import gov.nasa.jpf.vm.StackFrame;
27 import gov.nasa.jpf.vm.ThreadInfo;
28 import gov.nasa.jpf.vm.Types;
29
30
31 /**
32 * Create new array of reference
33 * ..., count => ..., arrayref
34 */
35 public class ANEWARRAY extends NewArrayInstruction {
36
37 public ANEWARRAY (String typeDescriptor){
38 type = Types.getTypeSignature(typeDescriptor, true);
39 }
40
41 @Override
42 public Instruction execute (ThreadInfo ti) {
43 // resolve the component class first
44 String compType = Types.getTypeName(type);
45 if(Types.isReferenceSignature(type)) {
46 try {
47 ti.resolveReferencedClass(compType);
48 } catch(LoadOnJPFRequired lre) {
49 return ti.getPC();
50 }
51 }
52
53 // there is no clinit for array classes, but we still have to create a class object
54 // since its a builtin class, we also don't have to bother with NoClassDefFoundErrors
55 String clsName = "[" + type;
56 ClassInfo ci = ClassLoaderInfo.getCurrentResolvedClassInfo(clsName);
57
58 if (!ci.isRegistered()) {
59 ci.registerClass(ti);
60 ci.setInitialized();
61 }
62
63 StackFrame frame = ti.getModifiableTopFrame();
64
65 arrayLength = frame.pop();
66 if (arrayLength < 0){
67 return ti.createAndThrowException("java.lang.NegativeArraySizeException");
68 }
69
70 Heap heap = ti.getHeap();
71 if (heap.isOutOfMemory()) { // simulate OutOfMemoryError
72 return ti.createAndThrowException("java.lang.OutOfMemoryError",
73 "trying to allocate new " +
74 Types.getTypeName(type) +
75 "[" + arrayLength + "]");
76 }
77
78 ElementInfo eiArray = heap.newArray(type, arrayLength, ti);
79 int aRef = eiArray.getObjectRef();
80
81 // pushes the object reference on the top stack frame
82 frame.push(aRef, true);
83
84 return getNext(ti);
85 }
86
87 @Override
88 public int getLength () {
89 return 3; // opcode, index1, index2
90 }
91
92 @Override
93 public int getByteCode () {
94 return 0xBD;
95 }
96
97 @Override
98 public void accept(JVMInstructionVisitor insVisitor) {
99 insVisitor.visit(this);
100 }
101 }