Mercurial > hg > Members > kono > jpf-core
diff src/main/gov/nasa/jpf/jvm/bytecode/EXECUTENATIVE.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/EXECUTENATIVE.java Fri Jan 23 10:14:01 2015 -0800 @@ -0,0 +1,99 @@ +/* + * 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.Instruction; +import gov.nasa.jpf.vm.MethodInfo; +import gov.nasa.jpf.vm.NativeMethodInfo; +import gov.nasa.jpf.vm.ThreadInfo; + +import java.lang.reflect.Method; + +/** + * this is a synthetic instruction to (re-)execute native methods + * + * Note that StackFrame and lock handling has to occur from within + * the corresponding NativeMethodInfo + */ +public class EXECUTENATIVE extends Instruction implements JVMInstruction { + + // unfortunately we can't null this in cleanupTransients(), but it is + // a potential leak for stored traces + protected NativeMethodInfo executedMethod; + + @Override + public boolean isExtendedInstruction() { + return true; + } + + public static final int OPCODE = 259; + + @Override + public int getByteCode () { + return OPCODE; + } + + public EXECUTENATIVE (){} + + public EXECUTENATIVE (NativeMethodInfo mi){ + executedMethod = mi; + } + + public void setExecutedMethod (NativeMethodInfo mi){ + executedMethod = mi; + } + + @Override + public void accept(JVMInstructionVisitor insVisitor) { + insVisitor.visit(this); + } + + @Override + public Instruction execute (ThreadInfo ti) { + + // we don't have to enter/leave or push/pop a frame, that's all done + // in NativeMethodInfo.execute() + // !! don't re-enter if this is reexecuted !! + return executedMethod.executeNative(ti); + } + + public MethodInfo getExecutedMethod() { + return executedMethod; + } + + public String getExecutedMethodName(){ + return executedMethod.getName(); + } + + @Override + public String toString() { + StringBuilder sb = new StringBuilder(); + sb.append("executenative"); + + if (executedMethod != null){ + Method m = executedMethod.getMethod(); + sb.append(' '); + sb.append( m.getDeclaringClass().getSimpleName()); + sb.append('.'); + sb.append( m.getName()); + } + + return sb.toString(); + } +}