1 /* 2 * Copyright (c) 2016, 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_METAACCESS; 28 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.getArrayBaseOffset; 29 import static org.graalvm.compiler.serviceprovider.GraalServices.Java8OrEarlier; 30 31 import org.graalvm.compiler.api.replacements.ClassSubstitution; 32 import org.graalvm.compiler.api.replacements.MethodSubstitution; 33 import org.graalvm.compiler.debug.GraalError; 34 import org.graalvm.compiler.hotspot.HotSpotBackend; 35 import org.graalvm.compiler.hotspot.nodes.ComputeObjectAddressNode; 36 import org.graalvm.compiler.nodes.PiNode; 37 import org.graalvm.compiler.nodes.extended.RawLoadNode; 38 import org.graalvm.compiler.word.Word; 39 import jdk.internal.vm.compiler.word.LocationIdentity; 40 import jdk.internal.vm.compiler.word.WordFactory; 41 42 import jdk.vm.ci.meta.JavaKind; 43 44 @ClassSubstitution(className = "sun.security.provider.SHA5", optional = true) 45 public class SHA5Substitutions { 46 47 static final long stateOffset; 48 49 static final Class<?> shaClass; 50 51 public static final String implCompressName = Java8OrEarlier ? "implCompress" : "implCompress0"; 52 53 static { 54 try { 55 // Need to use the system class loader as com.sun.crypto.provider.AESCrypt 56 // is normally loaded by the extension class loader which is not delegated 57 // to by the JVMCI class loader. 58 ClassLoader cl = ClassLoader.getSystemClassLoader(); 59 shaClass = Class.forName("sun.security.provider.SHA5", true, cl); 60 stateOffset = UnsafeAccess.UNSAFE.objectFieldOffset(shaClass.getDeclaredField("state")); 61 } catch (Exception ex) { 62 throw new GraalError(ex); 63 } 64 } 65 66 @MethodSubstitution(isStatic = false) implCompress0(Object receiver, byte[] buf, int ofs)67 static void implCompress0(Object receiver, byte[] buf, int ofs) { 68 Object realReceiver = PiNode.piCastNonNull(receiver, shaClass); 69 Object state = RawLoadNode.load(realReceiver, stateOffset, JavaKind.Object, LocationIdentity.any()); 70 Word bufAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(buf, getArrayBaseOffset(INJECTED_METAACCESS, JavaKind.Byte) + ofs)); 71 Word stateAddr = WordFactory.unsigned(ComputeObjectAddressNode.get(state, getArrayBaseOffset(INJECTED_METAACCESS, JavaKind.Int))); 72 HotSpotBackend.sha5ImplCompressStub(bufAddr, stateAddr); 73 } 74 } 75