Mercurial > hg > Members > kono > jpf-core

annotate src/main/gov/nasa/jpf/jvm/bytecode/FSTORE.java @ 0:61d41facf527

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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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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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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.bytecode.StoreInstruction;
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21 import gov.nasa.jpf.vm.Instruction;
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22 import gov.nasa.jpf.vm.StackFrame;
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23 import gov.nasa.jpf.vm.ThreadInfo;
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24
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25
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26 /**
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27 * Store float into local variable
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28 * ..., value => ...
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29 */
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30 public class FSTORE extends JVMLocalVariableInstruction implements StoreInstruction {
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31
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32 public FSTORE(int localVarIndex) {
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33 super(localVarIndex);
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34 }
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35
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36 @Override
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37 public Instruction execute (ThreadInfo ti) {
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38 StackFrame frame = ti.getModifiableTopFrame();
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39
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40 frame.storeOperand(index);
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41
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42 return getNext(ti);
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43 }
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44
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45 @Override
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46 public int getLength() {
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47 if (index > 3){
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48 return 2; // opcode, index
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49 } else {
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50 return 1;
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51 }
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52 }
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53
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54 @Override
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55 public int getByteCode () {
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56 switch (index) {
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57 case 0: return 0x43;
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58 case 1: return 0x44;
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59 case 2: return 0x45;
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60 case 3: return 0x46;
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61 }
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62
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63 return 0x38; // ?? wide
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64 }
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65
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66 @Override
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67 public String getBaseMnemonic() {
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68 return "fstore";
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69 }
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70
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71 @Override
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72 public void accept(JVMInstructionVisitor insVisitor) {
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73 insVisitor.visit(this);
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74 }
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75 }