001/*
002 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.hotspot.nodes;
024
025import jdk.internal.jvmci.meta.*;
026import static com.oracle.graal.hotspot.HotSpotBackend.*;
027
028import com.oracle.graal.compiler.common.spi.*;
029import com.oracle.graal.compiler.common.type.*;
030import com.oracle.graal.graph.*;
031import com.oracle.graal.hotspot.*;
032import com.oracle.graal.lir.StandardOp.SaveRegistersOp;
033import com.oracle.graal.nodeinfo.*;
034import com.oracle.graal.nodes.*;
035import com.oracle.graal.nodes.memory.*;
036import com.oracle.graal.nodes.spi.*;
037import com.oracle.graal.word.*;
038
039/**
040 * A call to the runtime code implementing the uncommon trap logic.
041 */
042@NodeInfo(allowedUsageTypes = {InputType.Memory})
043public final class UncommonTrapCallNode extends FixedWithNextNode implements LIRLowerable, MemoryCheckpoint.Single {
044
045    public static final NodeClass<UncommonTrapCallNode> TYPE = NodeClass.create(UncommonTrapCallNode.class);
046    @Input ValueNode trapRequest;
047    @Input SaveAllRegistersNode registerSaver;
048    protected final ForeignCallsProvider foreignCalls;
049
050    public UncommonTrapCallNode(@InjectedNodeParameter ForeignCallsProvider foreignCalls, ValueNode registerSaver, ValueNode trapRequest) {
051        super(TYPE, StampFactory.forKind(Kind.fromJavaClass(UNCOMMON_TRAP.getResultType())));
052        this.trapRequest = trapRequest;
053        this.registerSaver = (SaveAllRegistersNode) registerSaver;
054        this.foreignCalls = foreignCalls;
055    }
056
057    @Override
058    public LocationIdentity getLocationIdentity() {
059        return LocationIdentity.any();
060    }
061
062    public SaveRegistersOp getSaveRegistersOp() {
063        return registerSaver.getSaveRegistersOp();
064    }
065
066    @Override
067    public void generate(NodeLIRBuilderTool gen) {
068        Value trapRequestValue = gen.operand(trapRequest);
069        Value result = ((HotSpotLIRGenerator) gen.getLIRGeneratorTool()).emitUncommonTrapCall(trapRequestValue, getSaveRegistersOp());
070        gen.setResult(this, result);
071    }
072
073    @NodeIntrinsic
074    public static native Word uncommonTrap(long registerSaver, int trapRequest);
075}