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/*
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* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.graalvm.compiler.hotspot.meta;
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import static org.graalvm.compiler.serviceprovider.GraalServices.Java8OrEarlier;
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import org.graalvm.compiler.api.replacements.ClassSubstitution;
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import org.graalvm.compiler.api.replacements.MethodSubstitution;
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import org.graalvm.compiler.hotspot.HotSpotBackend;
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import org.graalvm.compiler.hotspot.nodes.ComputeObjectAddressNode;
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import org.graalvm.compiler.word.Word;
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import jdk.internal.vm.compiler.word.WordFactory;
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@ClassSubstitution(className = {"jdk.internal.misc.Unsafe", "sun.misc.Unsafe"})
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public class HotSpotUnsafeSubstitutions {
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public static final String copyMemoryName = Java8OrEarlier ? "copyMemory" : "copyMemory0";
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@SuppressWarnings("unused")
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@MethodSubstitution(isStatic = false)
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static void copyMemory(Object receiver, Object srcBase, long srcOffset, Object destBase, long destOffset, long bytes) {
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Word srcAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(srcBase, srcOffset));
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Word dstAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(destBase, destOffset));
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Word size = WordFactory.signed(bytes);
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HotSpotBackend.unsafeArraycopy(srcAddr, dstAddr, size);
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}
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}
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