1 /*
   2  * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 package org.graalvm.compiler.hotspot.replacements;
  26 
  27 import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfig.INJECTED_METAACCESS;
  28 import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfigBase.INJECTED_INTRINSIC_CONTEXT;
  29 import static org.graalvm.compiler.serviceprovider.JavaVersionUtil.Java8OrEarlier;
  30 
  31 import org.graalvm.compiler.api.replacements.ClassSubstitution;
  32 import org.graalvm.compiler.api.replacements.Fold;
  33 import org.graalvm.compiler.api.replacements.MethodSubstitution;
  34 import org.graalvm.compiler.hotspot.HotSpotBackend;
  35 import org.graalvm.compiler.nodes.ComputeObjectAddressNode;
  36 import org.graalvm.compiler.nodes.PiNode;
  37 import org.graalvm.compiler.nodes.extended.RawLoadNode;
  38 import org.graalvm.compiler.nodes.graphbuilderconf.IntrinsicContext;
  39 import org.graalvm.compiler.replacements.ReplacementsUtil;
  40 import org.graalvm.compiler.word.Word;
  41 import jdk.internal.vm.compiler.word.LocationIdentity;
  42 import jdk.internal.vm.compiler.word.WordFactory;
  43 
  44 import jdk.vm.ci.meta.JavaKind;
  45 
  46 @ClassSubstitution(className = "sun.security.provider.SHA2", optional = true)
  47 public class SHA2Substitutions {
  48 
  49     public static final String implCompressName = Java8OrEarlier ? "implCompress" : "implCompress0";
  50 
  51     @MethodSubstitution(isStatic = false)
  52     static void implCompress0(Object receiver, byte[] buf, int ofs) {
  53         Object realReceiver = PiNode.piCastNonNull(receiver, HotSpotReplacementsUtil.methodHolderClass(INJECTED_INTRINSIC_CONTEXT));
  54         Object state = RawLoadNode.load(realReceiver, stateOffset(INJECTED_INTRINSIC_CONTEXT), JavaKind.Object, LocationIdentity.any());
  55         Word bufAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(buf, ReplacementsUtil.getArrayBaseOffset(INJECTED_METAACCESS, JavaKind.Byte) + ofs));
  56         Word stateAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(state, ReplacementsUtil.getArrayBaseOffset(INJECTED_METAACCESS, JavaKind.Int)));
  57         HotSpotBackend.sha2ImplCompressStub(bufAddr, stateAddr);
  58     }
  59 
  60     @Fold
  61     static long stateOffset(@Fold.InjectedParameter IntrinsicContext context) {
  62         return HotSpotReplacementsUtil.getFieldOffset(HotSpotReplacementsUtil.methodHolderClass(context), "state");
  63     }
  64 }