/*
* RTLUnknownProcedureCall.java - This file is part of the Jakstab project.
* Copyright 2007-2015 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.rtl.statements;
import java.util.Collections;
import java.util.Set;
import org.jakstab.rtl.Context;
import org.jakstab.rtl.expressions.*;
import org.jakstab.util.Logger;
/**
* The fallthrough edge of an unresolved procedure call. Generated by optimistic and
* semi-optimistic state transformer factories.
*
* @author Johannes Kinder
*/
public class RTLUnknownProcedureCall extends AbstractRTLStatement implements
RTLStatement {
@SuppressWarnings("unused")
private static final Logger logger = Logger.getLogger(RTLUnknownProcedureCall.class);
private static final SetOfVariables FASTCALL_USED;
private static final SetOfVariables INTEL_ABI_DEFINED;
static {
FASTCALL_USED = new SetOfVariables();
FASTCALL_USED.add(ExpressionFactory.createVariable("%eax"));
FASTCALL_USED.add(ExpressionFactory.createVariable("%ecx"));
FASTCALL_USED.add(ExpressionFactory.createVariable("%edx"));
INTEL_ABI_DEFINED = new SetOfVariables();
INTEL_ABI_DEFINED.add(ExpressionFactory.createVariable("%eax"));
INTEL_ABI_DEFINED.add(ExpressionFactory.createVariable("%ecx"));
INTEL_ABI_DEFINED.add(ExpressionFactory.createVariable("%edx"));
}
private final RTLGoto source;
/**
*
*/
public RTLUnknownProcedureCall(RTLGoto source) {
this.source = source;
}
/*
* @see org.jakstab.rtl.statements.AbstractRTLStatement#initDefinedVariables()
*/
@Override
protected SetOfVariables initDefinedVariables() {
return INTEL_ABI_DEFINED;
}
/*
* @see org.jakstab.rtl.statements.AbstractRTLStatement#initUsedMemoryLocations()
*/
@Override
protected Set<RTLMemoryLocation> initUsedMemoryLocations() {
return Collections.emptySet();
}
/*
* @see org.jakstab.rtl.statements.AbstractRTLStatement#initUsedVariables()
*/
@Override
protected SetOfVariables initUsedVariables() {
return FASTCALL_USED;
}
/*
* @see org.jakstab.rtl.statements.RTLStatement#accept(org.jakstab.rtl.statements.StatementVisitor)
*/
@Override
public <T> T accept(StatementVisitor<T> visitor) {
return visitor.visit(this);
}
/*
* @see org.jakstab.rtl.statements.RTLStatement#evaluate(org.jakstab.rtl.Context)
*/
@Override
public RTLStatement evaluate(Context context) {
return this;
}
public RTLGoto getSource() {
return source;
}
@Override
public String toString() {
return "return from call(" + source.getTargetExpression() + ")";
}
@Override
public int hashCode() {
final int prime = 31;
int result = super.hashCode();
result = prime * result + ((source == null) ? 0 : source.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (!super.equals(obj))
return false;
if (getClass() != obj.getClass())
return false;
RTLUnknownProcedureCall other = (RTLUnknownProcedureCall) obj;
if (source == null) {
if (other.source != null)
return false;
} else if (!source.equals(other.source))
return false;
return true;
}
}