2 * Copyright (C) 2014, United States Government, as represented by the
3 * Administrator of the National Aeronautics and Space Administration.
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
10 * http://www.apache.org/licenses/LICENSE-2.0.
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.
19 package gov.nasa.jpf.jvm.bytecode;
21 import gov.nasa.jpf.vm.ElementInfo;
22 import gov.nasa.jpf.vm.FieldInfo;
23 import gov.nasa.jpf.vm.StackFrame;
24 import gov.nasa.jpf.vm.ThreadInfo;
27 * helper class to factor out common PUT code
29 * <2do> This is going to be moved into a Java 8 interface with default methods
31 public class PutHelper {
33 protected static boolean hasNewValue (ThreadInfo ti, StackFrame frame, ElementInfo eiFieldOwner, FieldInfo fi){
34 Object valAttr = null;
35 int fieldSize = fi.getStorageSize();
38 valAttr = frame.getOperandAttr();
39 int val = frame.peek();
40 if (eiFieldOwner.get1SlotField(fi) != val){
45 valAttr = frame.getLongOperandAttr();
46 long val = frame.peekLong();
47 if (eiFieldOwner.get2SlotField(fi) != val){
52 if (eiFieldOwner.getFieldAttr(fi) != valAttr){
59 protected static int setReferenceField (ThreadInfo ti, StackFrame frame, ElementInfo eiFieldOwner, FieldInfo fi){
60 Object valAttr = frame.getOperandAttr();
61 int val = frame.peek();
62 eiFieldOwner.set1SlotField(fi, val);
63 eiFieldOwner.setFieldAttr(fi, valAttr);
67 protected static long setField (ThreadInfo ti, StackFrame frame, ElementInfo eiFieldOwner, FieldInfo fi){
68 int fieldSize = fi.getStorageSize();
71 Object valAttr = frame.getOperandAttr();
72 int val = frame.peek();
73 eiFieldOwner.set1SlotField(fi, val);
74 eiFieldOwner.setFieldAttr(fi, valAttr);
78 Object valAttr = frame.getLongOperandAttr();
79 long val = frame.peekLong();
80 eiFieldOwner.set2SlotField(fi, val);
81 eiFieldOwner.setFieldAttr(fi, valAttr);