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.GraalHotSpotVMConfigBase.INJECTED_INTRINSIC_CONTEXT; 28 import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfigBase.INJECTED_METAACCESS; 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.Fold.InjectedParameter; 34 import org.graalvm.compiler.api.replacements.MethodSubstitution; 35 import org.graalvm.compiler.hotspot.HotSpotBackend; 36 import org.graalvm.compiler.nodes.ComputeObjectAddressNode; 37 import org.graalvm.compiler.nodes.PiNode; 38 import org.graalvm.compiler.nodes.extended.RawLoadNode; 39 import org.graalvm.compiler.nodes.graphbuilderconf.IntrinsicContext; 40 import org.graalvm.compiler.replacements.ReplacementsUtil; 41 import org.graalvm.compiler.word.Word; 42 import jdk.internal.vm.compiler.word.LocationIdentity; 43 import jdk.internal.vm.compiler.word.WordFactory; 44 45 import jdk.vm.ci.meta.JavaKind; 46 47 @ClassSubstitution(className = "sun.security.provider.SHA", optional = true) 48 public class SHASubstitutions { 49 50 public static final String implCompressName = Java8OrEarlier ? "implCompress" : "implCompress0"; 51 52 @MethodSubstitution(isStatic = false) 53 static void implCompress0(Object receiver, byte[] buf, int ofs) { 54 Object realReceiver = PiNode.piCastNonNull(receiver, HotSpotReplacementsUtil.methodHolderClass(INJECTED_INTRINSIC_CONTEXT)); 55 Object state = RawLoadNode.load(realReceiver, stateOffset(INJECTED_INTRINSIC_CONTEXT), JavaKind.Object, LocationIdentity.any()); 56 Word bufAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(buf, ReplacementsUtil.getArrayBaseOffset(INJECTED_METAACCESS, JavaKind.Byte) + ofs)); 57 Word stateAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(state, ReplacementsUtil.getArrayBaseOffset(INJECTED_METAACCESS, JavaKind.Int))); 58 HotSpotBackend.shaImplCompressStub(bufAddr, stateAddr); 59 } 60 61 @Fold 62 static long stateOffset(@InjectedParameter IntrinsicContext context) { 63 return HotSpotReplacementsUtil.getFieldOffset(HotSpotReplacementsUtil.methodHolderClass(context), "state"); 64 } 65 66 }