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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package com.oracle.svm.core.graal.nodes;

import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeCycles;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodeinfo.NodeSize;
import org.graalvm.compiler.nodes.FixedWithNextNode;
import org.graalvm.compiler.nodes.spi.LIRLowerable;
import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;

import com.oracle.svm.core.FrameAccess;

import jdk.vm.ci.meta.Value;

@NodeInfo(cycles = NodeCycles.CYCLES_1, size = NodeSize.SIZE_1)
public final class ReadReturnAddressNode extends FixedWithNextNode implements LIRLowerable {
    public static final NodeClass<ReadReturnAddressNode> TYPE = NodeClass.create(ReadReturnAddressNode.class);

    public ReadReturnAddressNode() {
        super(TYPE, FrameAccess.getWordStamp());
    }

    @Override
    public void generate(NodeLIRBuilderTool gen) {
        assert FrameAccess.returnAddressSize() > 0;
        Value result = gen.getLIRGeneratorTool().emitReadReturnAddress(FrameAccess.getWordStamp(), FrameAccess.returnAddressSize());
        gen.setResult(this, result);
    }
}
