Mercurial > hg > Members > kono > jpf-core
view src/main/gov/nasa/jpf/jvm/JVMNativeStackFrame.java @ 0:61d41facf527
initial v8 import (history reset)
author | Peter Mehlitz <Peter.C.Mehlitz@nasa.gov> |
---|---|
date | Fri, 23 Jan 2015 10:14:01 -0800 |
parents | |
children |
line wrap: on
line source
/* * 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; import gov.nasa.jpf.vm.NativeMethodInfo; import gov.nasa.jpf.vm.NativeStackFrame; import gov.nasa.jpf.vm.StackFrame; import gov.nasa.jpf.vm.ThreadInfo; import gov.nasa.jpf.vm.Types; /** * a NativeStackFrame used for calling NativeMethods from Java bytecode */ public class JVMNativeStackFrame extends NativeStackFrame { public JVMNativeStackFrame (NativeMethodInfo callee){ super(callee); } public void setArguments (ThreadInfo ti){ StackFrame callerFrame = ti.getTopFrame(); // we are not going to modify it NativeMethodInfo nmi = (NativeMethodInfo) mi; int nArgs = nmi.getNumberOfArguments(); byte[] argTypes = nmi.getArgumentTypes(); Object[] a = new Object[nArgs+2]; int stackOffset; int i, j, k; int ival; long lval; for (i = 0, stackOffset = 0, j = nArgs + 1, k = nArgs - 1; i < nArgs; i++, j--, k--) { switch (argTypes[k]) { case Types.T_BOOLEAN: ival = callerFrame.peek(stackOffset); a[j] = Boolean.valueOf(Types.intToBoolean(ival)); break; case Types.T_BYTE: ival = callerFrame.peek(stackOffset); a[j] = Byte.valueOf((byte) ival); break; case Types.T_CHAR: ival = callerFrame.peek(stackOffset); a[j] = Character.valueOf((char) ival); break; case Types.T_SHORT: ival = callerFrame.peek(stackOffset); a[j] = new Short((short) ival); break; case Types.T_INT: ival = callerFrame.peek(stackOffset); a[j] = new Integer(ival); break; case Types.T_LONG: lval = callerFrame.peekLong(stackOffset); stackOffset++; // 2 stack words a[j] = new Long(lval); break; case Types.T_FLOAT: ival = callerFrame.peek(stackOffset); a[j] = new Float(Types.intToFloat(ival)); break; case Types.T_DOUBLE: lval = callerFrame.peekLong(stackOffset); stackOffset++; // 2 stack words a[j] = new Double(Types.longToDouble(lval)); break; default: // NOTE - we have to store T_REFERENCE as an Integer, because // it shows up in our native method as an 'int' ival = callerFrame.peek(stackOffset); a[j] = new Integer(ival); } stackOffset++; } //--- set our standard MJI header arguments a[0] = ti.getMJIEnv(); if (nmi.isStatic()) { a[1] = new Integer( nmi.getClassInfo().getClassObjectRef()); } else { int thisRef = callerFrame.getCalleeThis(nmi); a[1] = new Integer( thisRef); setThis(thisRef); } setArgs(a); } }