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>
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);
+  }
+}