/*
 * Copyright (c) 2011, 2012, 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.oracle.graal.hotspot.nodes;

import com.oracle.max.asm.target.amd64.*;
import com.oracle.graal.api.code.*;
import com.oracle.graal.api.meta.*;
import com.oracle.graal.nodes.calc.*;
import com.oracle.graal.nodes.spi.*;
import com.oracle.graal.nodes.type.*;

public final class CurrentThread extends FloatingNode implements LIRLowerable {

    private int threadObjectOffset;

    public CurrentThread(int threadObjectOffset, RiRuntime runtime) {
        super(StampFactory.declaredNonNull(runtime.getType(Thread.class)));
        this.threadObjectOffset = threadObjectOffset;
    }

    @Override
    public void generate(LIRGeneratorTool generator) {
        generator.setResult(this, generator.emitLoad(new CiAddress(Kind.Object, AMD64.r15.asValue(generator.target().wordKind), threadObjectOffset), false));
    }

    @SuppressWarnings("unused")
    @NodeIntrinsic
    public static Object get(int threadObjectOffset) {
        throw new UnsupportedOperationException();
    }
}