Mercurial > hg > Members > kono > jpf-core
diff src/main/gov/nasa/jpf/jvm/bytecode/ANEWARRAY.java @ 0:61d41facf527
initial v8 import (history reset)
author | Peter Mehlitz <Peter.C.Mehlitz@nasa.gov> |
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date | Fri, 23 Jan 2015 10:14:01 -0800 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/main/gov/nasa/jpf/jvm/bytecode/ANEWARRAY.java Fri Jan 23 10:14:01 2015 -0800 @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2014, United States Government, as represented by the + * Administrator of the National Aeronautics and Space Administration. + * All rights reserved. + * + * The Java Pathfinder core (jpf-core) platform is licensed under the + * Apache License, Version 2.0 (the "License"); you may not use this file except + * in compliance with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0. + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package gov.nasa.jpf.jvm.bytecode; + +import gov.nasa.jpf.vm.ClassInfo; +import gov.nasa.jpf.vm.ClassLoaderInfo; +import gov.nasa.jpf.vm.ElementInfo; +import gov.nasa.jpf.vm.Heap; +import gov.nasa.jpf.vm.Instruction; +import gov.nasa.jpf.vm.LoadOnJPFRequired; +import gov.nasa.jpf.vm.StackFrame; +import gov.nasa.jpf.vm.ThreadInfo; +import gov.nasa.jpf.vm.Types; + + +/** + * Create new array of reference + * ..., count => ..., arrayref + */ +public class ANEWARRAY extends NewArrayInstruction { + + public ANEWARRAY (String typeDescriptor){ + type = Types.getTypeSignature(typeDescriptor, true); + } + + @Override + public Instruction execute (ThreadInfo ti) { + // resolve the component class first + String compType = Types.getTypeName(type); + if(Types.isReferenceSignature(type)) { + try { + ti.resolveReferencedClass(compType); + } catch(LoadOnJPFRequired lre) { + return ti.getPC(); + } + } + + // there is no clinit for array classes, but we still have to create a class object + // since its a builtin class, we also don't have to bother with NoClassDefFoundErrors + String clsName = "[" + type; + ClassInfo ci = ClassLoaderInfo.getCurrentResolvedClassInfo(clsName); + + if (!ci.isRegistered()) { + ci.registerClass(ti); + ci.setInitialized(); + } + + StackFrame frame = ti.getModifiableTopFrame(); + + arrayLength = frame.pop(); + if (arrayLength < 0){ + return ti.createAndThrowException("java.lang.NegativeArraySizeException"); + } + + Heap heap = ti.getHeap(); + if (heap.isOutOfMemory()) { // simulate OutOfMemoryError + return ti.createAndThrowException("java.lang.OutOfMemoryError", + "trying to allocate new " + + Types.getTypeName(type) + + "[" + arrayLength + "]"); + } + + ElementInfo eiArray = heap.newArray(type, arrayLength, ti); + int aRef = eiArray.getObjectRef(); + + // pushes the object reference on the top stack frame + frame.push(aRef, true); + + return getNext(ti); + } + + @Override + public int getLength () { + return 3; // opcode, index1, index2 + } + + @Override + public int getByteCode () { + return 0xBD; + } + + @Override + public void accept(JVMInstructionVisitor insVisitor) { + insVisitor.visit(this); + } +}