Mercurial > hg > Members > kono > jpf-core
annotate src/main/gov/nasa/jpf/jvm/bytecode/IFEQ.java @ 0:61d41facf527
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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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1 /* |
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2 * Copyright (C) 2014, United States Government, as represented by the |
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3 * Administrator of the National Aeronautics and Space Administration. |
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4 * All rights reserved. |
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5 * |
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the |
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except |
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8 * in compliance with the License. You may obtain a copy of the License at |
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9 * |
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10 * http://www.apache.org/licenses/LICENSE-2.0. |
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11 * |
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12 * Unless required by applicable law or agreed to in writing, software |
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13 * distributed under the License is distributed on an "AS IS" BASIS, |
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 * See the License for the specific language governing permissions and |
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16 * limitations under the License. |
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17 */ |
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18 package gov.nasa.jpf.jvm.bytecode; |
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19 |
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20 import gov.nasa.jpf.vm.StackFrame; |
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21 |
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22 |
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23 /** |
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24 * Branch if int comparison with zero succeeds |
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25 * ..., value => ... |
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26 */ |
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27 public class IFEQ extends IfInstruction { |
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28 |
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29 public IFEQ(int targetPc) { |
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30 super(targetPc); |
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31 } |
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32 |
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33 |
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34 @Override |
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35 public boolean popConditionValue (StackFrame frame) { |
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36 return (frame.pop() == 0); |
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37 } |
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38 |
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39 |
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40 @Override |
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41 public int getByteCode () { |
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42 return 0x99; |
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43 } |
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44 |
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45 @Override |
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46 public void accept(JVMInstructionVisitor insVisitor) { |
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47 insVisitor.visit(this); |
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48 } |
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49 } |