/*

 * Copyright (c) 2016, 2019, 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package org.graalvm.compiler.hotspot.replacements;

import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfigBase.INJECTED_INTRINSIC_CONTEXT;

import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfigBase.INJECTED_METAACCESS;

import org.graalvm.compiler.api.replacements.ClassSubstitution;

import org.graalvm.compiler.api.replacements.Fold;

import org.graalvm.compiler.api.replacements.Fold.InjectedParameter;

import org.graalvm.compiler.api.replacements.MethodSubstitution;

import org.graalvm.compiler.hotspot.HotSpotBackend;

import org.graalvm.compiler.nodes.ComputeObjectAddressNode;

import org.graalvm.compiler.nodes.PiNode;

import org.graalvm.compiler.nodes.extended.RawLoadNode;

import org.graalvm.compiler.nodes.graphbuilderconf.IntrinsicContext;

import org.graalvm.compiler.replacements.ReplacementsUtil;

import org.graalvm.compiler.serviceprovider.JavaVersionUtil;

import org.graalvm.compiler.word.Word;

import jdk.internal.vm.compiler.word.LocationIdentity;

import jdk.internal.vm.compiler.word.WordFactory;

import jdk.vm.ci.meta.JavaKind;

@ClassSubstitution(className = "sun.security.provider.SHA5", optional = true)

public class SHA5Substitutions {

    public static final String implCompressName = JavaVersionUtil.JAVA_SPEC <= 8 ? "implCompress" : "implCompress0";

    @MethodSubstitution(isStatic = false)

    static void implCompress0(Object receiver, byte[] buf, int ofs) {

        Object realReceiver = PiNode.piCastNonNull(receiver, HotSpotReplacementsUtil.methodHolderClass(INJECTED_INTRINSIC_CONTEXT));

        Object state = RawLoadNode.load(realReceiver, stateOffset(INJECTED_INTRINSIC_CONTEXT), JavaKind.Object, LocationIdentity.any());

        Word bufAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(buf, ReplacementsUtil.getArrayBaseOffset(INJECTED_METAACCESS, JavaKind.Byte) + ofs));

        Word stateAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(state, ReplacementsUtil.getArrayBaseOffset(INJECTED_METAACCESS, JavaKind.Int)));

        HotSpotBackend.sha5ImplCompressStub(bufAddr, stateAddr);

    }

    @Fold

    static long stateOffset(@InjectedParameter IntrinsicContext context) {

        return HotSpotReplacementsUtil.getFieldOffset(HotSpotReplacementsUtil.methodHolderClass(context), "state");

    }

}