/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.test;
import java.io.File;
import org.jnode.vm.VmSystemClassLoader;
import org.jnode.vm.bytecode.BytecodeParser;
import org.jnode.vm.bytecode.BytecodeViewer;
import org.jnode.vm.bytecode.ControlFlowGraph;
import org.jnode.vm.classmgr.VmByteCode;
import org.jnode.vm.classmgr.VmMethod;
import org.jnode.vm.classmgr.VmType;
import org.jnode.vm.x86.VmX86Architecture32;
/**
* @author epr
*/
public class TestControlFlowGraph {
public static void main(String[] args)
throws Exception {
final String className = (args.length > 0) ? args[0] : "java.lang.Object";
final VmSystemClassLoader loader = new VmSystemClassLoader(new File(".").toURL(), new VmX86Architecture32());
final VmType vmClass = loader.loadClass(className, true);
for (int i = 0; i < vmClass.getNoDeclaredMethods(); i++) {
TestCFG(vmClass.getDeclaredMethod(i));
}
}
private static void TestCFG(VmMethod method) {
final VmByteCode bc = method.getBytecode();
System.out.println("Method " + method);
System.out.println("MaxStack " + bc.getMaxStack());
System.out.println("#Locals " + bc.getNoLocals());
System.out.println("#Arg slots " + method.getArgSlotCount());
final ControlFlowGraph cfg = new ControlFlowGraph(method.getBytecode());
BytecodeParser.parse(method.getBytecode(), new BytecodeViewer(cfg));
System.out.println();
}
}