/*
* Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.max.vm.actor.holder;
import com.sun.max.unsafe.*;
import com.sun.max.vm.actor.member.*;
import com.sun.max.vm.heap.*;
/**
*/
public final class StaticHub extends Hub {
StaticHub(Size tupleSize, ClassActor classActor, TupleReferenceMap referenceMap, int vTableLength) {
super(tupleSize, classActor, referenceMap, vTableLength);
}
/**
* Static Hub.
*/
StaticHub expand(TupleReferenceMap referenceMap, int rootId) {
final StaticHub hub = (StaticHub) expand();
referenceMap.copyIntoHub(hub);
// static hubs have a very special i-table and m-table that make it appear
// as if it extends java.lang.Object (rootId)
hub.setWord(hub.iTableStartIndex, Address.fromInt(rootId));
hub.setInt(hub.mTableStartIndex, hub.iTableStartIndex);
return hub;
}
@Override
public FieldActor findFieldActor(int offset) {
return classActor.findStaticFieldActor(offset);
}
}