Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/CipherBlockChainingSubstitutions.java @ 9793:b4f12c603be5
added support for the runtime to specify for each foreign call whether it is re-executable and what memory locations it kills
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Wed, 22 May 2013 16:27:25 +0200 |
parents | 9a32908912ae |
children | cf071af51d94 |
line wrap: on
line source
/* * Copyright (c) 2012, 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 com.oracle.graal.hotspot.replacements; import static com.oracle.graal.api.meta.LocationIdentity.*; import static com.oracle.graal.hotspot.replacements.HotSpotReplacementsUtil.*; import sun.misc.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.Node.ConstantNodeParameter; import com.oracle.graal.graph.Node.NodeIntrinsic; import com.oracle.graal.hotspot.nodes.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.replacements.Snippet.Fold; import com.oracle.graal.word.*; /** * Substitutions for {@code com.sun.crypto.provider.CipherBlockChaining} methods. */ @ClassSubstitution(className = "com.sun.crypto.provider.CipherBlockChaining", optional = true) public class CipherBlockChainingSubstitutions { private static final long embeddedCipherOffset; private static final long rOffset; static { try { // Need to use launcher class path as com.sun.crypto.provider.AESCrypt // is normally not on the boot class path ClassLoader cl = Launcher.getLauncher().getClassLoader(); embeddedCipherOffset = UnsafeAccess.unsafe.objectFieldOffset(Class.forName("com.sun.crypto.provider.FeedbackCipher", true, cl).getDeclaredField("embeddedCipher")); rOffset = UnsafeAccess.unsafe.objectFieldOffset(Class.forName("com.sun.crypto.provider.CipherBlockChaining", true, cl).getDeclaredField("r")); } catch (Exception ex) { throw new GraalInternalError(ex); } } @Fold private static Class getAESCryptClass() { return AESCryptSubstitutions.AESCryptClass; } @MethodSubstitution(isStatic = false) static void encrypt(Object rcvr, byte[] in, int inOffset, int inLength, byte[] out, int outOffset) { Object embeddedCipher = Word.fromObject(rcvr).readObject(Word.unsigned(embeddedCipherOffset), ANY_LOCATION); if (getAESCryptClass().isInstance(embeddedCipher)) { crypt(rcvr, in, inOffset, inLength, out, outOffset, embeddedCipher, true); } else { encrypt(rcvr, in, inOffset, inLength, out, outOffset); } } @MethodSubstitution(isStatic = false) static void decrypt(Object rcvr, byte[] in, int inOffset, int inLength, byte[] out, int outOffset) { Object embeddedCipher = Word.fromObject(rcvr).readObject(Word.unsigned(embeddedCipherOffset), ANY_LOCATION); if (in != out && getAESCryptClass().isInstance(embeddedCipher)) { crypt(rcvr, in, inOffset, inLength, out, outOffset, embeddedCipher, false); } else { decrypt(rcvr, in, inOffset, inLength, out, outOffset); } } private static void crypt(Object rcvr, byte[] in, int inOffset, int inLength, byte[] out, int outOffset, Object embeddedCipher, boolean encrypt) { Word kAddr = Word.fromObject(embeddedCipher).readWord(Word.unsigned(AESCryptSubstitutions.kOffset), ANY_LOCATION).add(arrayBaseOffset(Kind.Byte)); Word rAddr = Word.unsigned(GetObjectAddressNode.get(rcvr)).readWord(Word.unsigned(rOffset), ANY_LOCATION).add(arrayBaseOffset(Kind.Byte)); Word inAddr = Word.unsigned(GetObjectAddressNode.get(in) + arrayBaseOffset(Kind.Byte) + inOffset); Word outAddr = Word.unsigned(GetObjectAddressNode.get(out) + arrayBaseOffset(Kind.Byte) + outOffset); if (encrypt) { encryptAESCryptStub(ENCRYPT, inAddr, outAddr, kAddr, rAddr, inLength); } else { decryptAESCryptStub(DECRYPT, inAddr, outAddr, kAddr, rAddr, inLength); } } public static final ForeignCallDescriptor ENCRYPT = new ForeignCallDescriptor("encrypt", void.class, Word.class, Word.class, Word.class, Word.class, int.class); public static final ForeignCallDescriptor DECRYPT = new ForeignCallDescriptor("decrypt", void.class, Word.class, Word.class, Word.class, Word.class, int.class); @NodeIntrinsic(ForeignCallNode.class) public static native void encryptAESCryptStub(@ConstantNodeParameter ForeignCallDescriptor descriptor, Word in, Word out, Word key, Word r, int inLength); @NodeIntrinsic(ForeignCallNode.class) public static native void decryptAESCryptStub(@ConstantNodeParameter ForeignCallDescriptor descriptor, Word in, Word out, Word key, Word r, int inLength); }