001/*
002 * Copyright (c) 2014, 2014, 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.amd64;
024
025import jdk.internal.jvmci.code.*;
026import jdk.internal.jvmci.code.CallingConvention.*;
027import jdk.internal.jvmci.meta.*;
028
029import com.oracle.graal.compiler.amd64.*;
030import com.oracle.graal.compiler.common.type.*;
031import com.oracle.graal.graph.*;
032import com.oracle.graal.nodeinfo.*;
033import com.oracle.graal.nodes.*;
034import com.oracle.graal.nodes.spi.*;
035
036@NodeInfo
037public final class AMD64RawNativeCallNode extends FixedWithNextNode implements LIRLowerable {
038    public static final NodeClass<AMD64RawNativeCallNode> TYPE = NodeClass.create(AMD64RawNativeCallNode.class);
039
040    protected final JavaConstant functionPointer;
041    @Input NodeInputList<ValueNode> args;
042
043    public AMD64RawNativeCallNode(Kind returnType, JavaConstant functionPointer, ValueNode[] args) {
044        super(TYPE, StampFactory.forKind(returnType));
045        this.functionPointer = functionPointer;
046        this.args = new NodeInputList<>(this, args);
047    }
048
049    @Override
050    public void generate(NodeLIRBuilderTool generator) {
051        AMD64NodeLIRBuilder gen = (AMD64NodeLIRBuilder) generator;
052        Value[] parameter = new Value[args.count()];
053        JavaType[] parameterTypes = new JavaType[args.count()];
054        for (int i = 0; i < args.count(); i++) {
055            parameter[i] = generator.operand(args.get(i));
056            parameterTypes[i] = args.get(i).stamp().javaType(gen.getLIRGeneratorTool().getMetaAccess());
057        }
058        ResolvedJavaType returnType = stamp().javaType(gen.getLIRGeneratorTool().getMetaAccess());
059        CallingConvention cc = generator.getLIRGeneratorTool().getCodeCache().getRegisterConfig().getCallingConvention(Type.NativeCall, returnType, parameterTypes,
060                        generator.getLIRGeneratorTool().target(), false);
061        gen.getLIRGeneratorTool().emitCCall(functionPointer.asLong(), cc, parameter, countFloatingTypeArguments(args));
062        if (this.getKind() != Kind.Void) {
063            generator.setResult(this, gen.getLIRGeneratorTool().emitMove(cc.getReturn()));
064        }
065    }
066
067    private static int countFloatingTypeArguments(NodeInputList<ValueNode> args) {
068        int count = 0;
069        for (ValueNode n : args) {
070            if (n.getKind() == Kind.Double || n.getKind() == Kind.Float) {
071                count++;
072            }
073        }
074        if (count > 8) {
075            return 8;
076        }
077        return count;
078    }
079
080}