01: //
02: // Copyright (C) 2005 United States Government as represented by the
03: // Administrator of the National Aeronautics and Space Administration
04: // (NASA). All Rights Reserved.
05: //
06: // This software is distributed under the NASA Open Source Agreement
07: // (NOSA), version 1.3. The NOSA has been approved by the Open Source
08: // Initiative. See the file NOSA-1.3-JPF at the top of the distribution
09: // directory tree for the complete NOSA document.
10: //
11: // THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
12: // KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
13: // LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
14: // SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
15: // A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
16: // THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
17: // DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
18: //
19: package gov.nasa.jpf.jvm.bytecode;
20:
21: import gov.nasa.jpf.jvm.ClassInfo;
22: import gov.nasa.jpf.jvm.KernelState;
23: import gov.nasa.jpf.jvm.SystemState;
24: import gov.nasa.jpf.jvm.ThreadInfo;
25:
26: import org.apache.bcel.classfile.ConstantPool;
27: import gov.nasa.jpf.jvm.DynamicArea;
28:
29: /**
30: * Create new object
31: * ... => ..., objectref
32: */
33: public class NEW extends Instruction {
34: protected String cname;
35:
36: public void setPeer(org.apache.bcel.generic.Instruction i,
37: ConstantPool cp) {
38: cname = cp.constantToString(cp
39: .getConstant(((org.apache.bcel.generic.NEW) i)
40: .getIndex()));
41: }
42:
43: public Instruction execute(SystemState ss, KernelState ks,
44: ThreadInfo ti) {
45: ClassInfo ci = ClassInfo.getClassInfo(cname);
46: DynamicArea heap = DynamicArea.getHeap();
47:
48: if (heap.getOutOfMemory()) { // simulate OutOfMemoryError
49: return ti.createAndThrowException(
50: "java.lang.OutOfMemoryError",
51: "trying to allocate new " + cname);
52: }
53:
54: int objRef = heap.newObject(ci, ti);
55:
56: if (ci.instanceOf("java.lang.Thread")) {
57: ti.getVM().createThread(objRef); // not running yet
58: }
59:
60: // pushes the return value onto the stack
61: ti.push(objRef, true);
62:
63: return getNext(ti);
64: }
65:
66: public int getByteCode() {
67: return 0xBB;
68: }
69: }
|