/*
 * Copyright (c) 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.graal.api.code.*;
import com.oracle.graal.api.meta.*;
import com.oracle.graal.compiler.gen.*;
import com.oracle.graal.compiler.target.*;
import com.oracle.graal.hotspot.*;
import com.oracle.graal.nodes.*;
import com.oracle.graal.nodes.type.*;
import com.oracle.graal.word.*;

/**
 * Node implementing a call to {@code GraalRuntime::monitorexit}.
 */
public class MonitorExitStubCall extends DeoptimizingStubCall implements LIRGenLowerable {

    @Input private ValueNode object;
    private int lockDepth;
    public static final ForeignCallDescriptor MONITOREXIT = new ForeignCallDescriptor("monitorexit", void.class, Object.class, Word.class);

    public MonitorExitStubCall(ValueNode object, int lockDepth) {
        super(StampFactory.forVoid());
        this.object = object;
        this.lockDepth = lockDepth;
    }

    @Override
    public void generate(LIRGenerator gen) {
        assert lockDepth != -1;
        HotSpotLIRGenerator hsGen = (HotSpotLIRGenerator) gen;
        StackSlot slot = hsGen.getLockSlot(lockDepth);
        ForeignCallLinkage linkage = gen.getForeignCalls().lookupForeignCall(MonitorExitStubCall.MONITOREXIT);
        gen.emitForeignCall(linkage, this, gen.operand(object), gen.emitAddress(slot));
    }

    @NodeIntrinsic
    public static native void call(Object object, @ConstantNodeParameter int lockDepth);
}