/*
* ConcretizationInputBuffer.java - This file is part of the Jakstab project.
* Copyright 2007-2012 Johannes Kinder <jk@jakstab.org>
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, see <http://www.gnu.org/licenses/>.
*/
package org.jakstab.util;
import java.io.IOException;
import java.util.Set;
import org.jakstab.analysis.AbstractState;
import org.jakstab.loader.ExecutableImage;
import org.jakstab.rtl.expressions.ExpressionFactory;
import org.jakstab.rtl.expressions.RTLMemoryLocation;
import org.jakstab.rtl.expressions.RTLNumber;
import org.jakstab.util.Logger;
/**
* @author Johannes Kinder
*/
public class ConcretizationInputBuffer extends BinaryInputBuffer {
@SuppressWarnings("unused")
private static final Logger logger = Logger.getLogger(ConcretizationInputBuffer.class);
private AbstractState state;
private ExecutableImage module;
public ConcretizationInputBuffer(ExecutableImage module, AbstractState state) {
this.module = module;
this.state = state;
}
@Override
public byte getByteAt(int fp) {
RTLNumber va = ExpressionFactory.createNumber(module.getVirtualAddress(fp).getValue(), 32);
RTLMemoryLocation m = ExpressionFactory.createMemoryLocation(va, 8);
Set<Tuple<RTLNumber>> cValSet = state.projectionFromConcretization(m);
// Hooray for fragile code
return (byte)cValSet.iterator().next().get(0).intValue();
}
@Override
public long getSize() {
return module.getMaxAddress().getValue() - module.getMinAddress().getValue();
}
@Override
public int readBYTE() throws IOException {
return 0xFF & getByteAt(current++);
}
}