Mercurial > hg > Members > kono > jpf-core
diff src/main/gov/nasa/jpf/jvm/bytecode/FSTORE.java @ 0:61d41facf527
initial v8 import (history reset)
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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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/main/gov/nasa/jpf/jvm/bytecode/FSTORE.java Fri Jan 23 10:14:01 2015 -0800 @@ -0,0 +1,75 @@ +/* + * 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.bytecode.StoreInstruction; +import gov.nasa.jpf.vm.Instruction; +import gov.nasa.jpf.vm.StackFrame; +import gov.nasa.jpf.vm.ThreadInfo; + + +/** + * Store float into local variable + * ..., value => ... + */ +public class FSTORE extends JVMLocalVariableInstruction implements StoreInstruction { + + public FSTORE(int localVarIndex) { + super(localVarIndex); + } + + @Override + public Instruction execute (ThreadInfo ti) { + StackFrame frame = ti.getModifiableTopFrame(); + + frame.storeOperand(index); + + return getNext(ti); + } + + @Override + public int getLength() { + if (index > 3){ + return 2; // opcode, index + } else { + return 1; + } + } + + @Override + public int getByteCode () { + switch (index) { + case 0: return 0x43; + case 1: return 0x44; + case 2: return 0x45; + case 3: return 0x46; + } + + return 0x38; // ?? wide + } + + @Override + public String getBaseMnemonic() { + return "fstore"; + } + + @Override + public void accept(JVMInstructionVisitor insVisitor) { + insVisitor.visit(this); + } +}