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/*
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* Copyright (c) 2016, 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.replacements;
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import static org.graalvm.compiler.core.common.util.Util.Java8OrEarlier;
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import static jdk.vm.ci.hotspot.HotSpotJVMCIRuntimeProvider.getArrayBaseOffset;
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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.core.common.LocationIdentity;
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import org.graalvm.compiler.debug.GraalError;
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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.nodes.PiNode;
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import org.graalvm.compiler.nodes.extended.RawLoadNode;
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import org.graalvm.compiler.word.Word;
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import jdk.vm.ci.meta.JavaKind;
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@ClassSubstitution(className = "sun.security.provider.SHA5", optional = true)
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public class SHA5Substitutions {
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static final long stateOffset;
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static final Class<?> shaClass;
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public static final String implCompressName = Java8OrEarlier ? "implCompress" : "implCompress0";
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static {
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try {
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// Need to use the system class loader as com.sun.crypto.provider.AESCrypt
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// is normally loaded by the extension class loader which is not delegated
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// to by the JVMCI class loader.
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ClassLoader cl = ClassLoader.getSystemClassLoader();
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shaClass = Class.forName("sun.security.provider.SHA5", true, cl);
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stateOffset = UnsafeAccess.UNSAFE.objectFieldOffset(shaClass.getDeclaredField("state"));
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} catch (Exception ex) {
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throw new GraalError(ex);
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}
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}
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@MethodSubstitution(isStatic = false)
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static void implCompress0(Object receiver, byte[] buf, int ofs) {
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Object realReceiver = PiNode.piCastNonNull(receiver, shaClass);
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Object state = RawLoadNode.load(realReceiver, stateOffset, JavaKind.Object, LocationIdentity.any());
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Word bufAddr = Word.unsigned(ComputeObjectAddressNode.get(buf, getArrayBaseOffset(JavaKind.Byte) + ofs));
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Word stateAddr = Word.unsigned(ComputeObjectAddressNode.get(state, getArrayBaseOffset(JavaKind.Int)));
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HotSpotBackend.sha5ImplCompressStub(bufAddr, stateAddr);
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}
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}
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