/*
* $Id$
*
* 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.vm;
import org.jnode.util.NumberUtils;
import org.jnode.annotation.MagicPermission;
import org.jnode.vm.objects.VmSystemObject;
import org.jnode.vm.scheduler.VmProcessor;
import org.vmmagic.unboxed.Address;
/**
* Address is not a normal Java object. Instead it is used as a reference
* to a virtual memory address. Variables of this type are not considered to
* be objects by the garbage collector.
*
* @author epr
*/
@MagicPermission
public abstract class VmAddress extends VmSystemObject {
/**
* Convert the given address to a String.
* The length of the string depends of the reference size of
* the current architecture.
*
* @param addr an address
* @return a hexadecimal string rendering of the address
*/
public static String toString(VmAddress addr) {
final int refsize = VmProcessor.current().getArchitecture().getReferenceSize();
if (refsize == 4) {
return NumberUtils.hex(Address.fromAddress(addr).toInt());
} else {
return NumberUtils.hex(Address.fromAddress(addr).toLong());
}
}
}