/*
 * Copyright (c) 2012, 2018, 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.
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package org.graalvm.compiler.hotspot.nodes;

import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_1;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;

import org.graalvm.compiler.core.common.LIRKind;
import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.hotspot.HotSpotLIRGenerator;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.calc.FloatingNode;
import org.graalvm.compiler.nodes.spi.LIRLowerable;
import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
import org.graalvm.compiler.word.Word;
import org.graalvm.compiler.word.WordTypes;

import jdk.vm.ci.code.Register;
import jdk.vm.ci.meta.JavaKind;
import jdk.vm.ci.meta.PlatformKind;

Gets the address of the C++ JavaThread object for the current thread.
/** * Gets the address of the C++ JavaThread object for the current thread. */
@NodeInfo(cycles = CYCLES_1, size = SIZE_1) public final class CurrentJavaThreadNode extends FloatingNode implements LIRLowerable { public static final NodeClass<CurrentJavaThreadNode> TYPE = NodeClass.create(CurrentJavaThreadNode.class); public CurrentJavaThreadNode(@InjectedNodeParameter WordTypes wordTypes) { this(wordTypes.getWordKind()); } public CurrentJavaThreadNode(JavaKind wordKind) { super(TYPE, StampFactory.forKind(wordKind)); } @Override public void generate(NodeLIRBuilderTool gen) { Register rawThread = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).getProviders().getRegisters().getThreadRegister(); PlatformKind wordKind = gen.getLIRGeneratorTool().target().arch.getWordKind(); gen.setResult(this, rawThread.asValue(LIRKind.value(wordKind))); } @NodeIntrinsic public static native Word get(); }