Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/CipherBlockChainingSubstitutions.java @ 9735:2e4f035186cf
rename: Descriptor -> ForeignCallDescriptor
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Thu, 16 May 2013 16:01:40 +0200 |
parents | badabdca0c53 |
children | 951d5ebf3c49 |
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/* * 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.hotspot.replacements.HotSpotReplacementsUtil.*; import sun.misc.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.code.RuntimeCallTarget.ForeignCallDescriptor; import com.oracle.graal.api.meta.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.compiler.gen.*; import com.oracle.graal.compiler.target.*; import com.oracle.graal.graph.*; import com.oracle.graal.hotspot.nodes.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.type.*; 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); } } 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) { EncryptAESCryptStubCall.call(inAddr, outAddr, kAddr, rAddr, inLength); } else { DecryptAESCryptStubCall.call(inAddr, outAddr, kAddr, rAddr, inLength); } } @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); } } abstract static class AESCryptStubCall extends DeoptimizingStubCall implements LIRGenLowerable { @Input private ValueNode in; @Input private ValueNode out; @Input private ValueNode key; @Input private ValueNode r; @Input private ValueNode inLength; private final ForeignCallDescriptor descriptor; public AESCryptStubCall(ValueNode in, ValueNode out, ValueNode key, ValueNode r, ValueNode inLength, ForeignCallDescriptor descriptor) { super(StampFactory.forVoid()); this.in = in; this.out = out; this.key = key; this.r = r; this.inLength = inLength; this.descriptor = descriptor; } @Override public void generate(LIRGenerator gen) { RuntimeCallTarget stub = gen.getRuntime().lookupRuntimeCall(descriptor); gen.emitCall(stub, stub.getCallingConvention(), null, gen.operand(in), gen.operand(out), gen.operand(key), gen.operand(r), gen.operand(inLength)); } } public static class EncryptAESCryptStubCall extends AESCryptStubCall { public static final ForeignCallDescriptor ENCRYPT = new ForeignCallDescriptor("encrypt", false, void.class, Word.class, Word.class, Word.class, Word.class, int.class); public EncryptAESCryptStubCall(ValueNode in, ValueNode out, ValueNode key, ValueNode r, ValueNode inLength) { super(in, out, key, r, inLength, ENCRYPT); } @NodeIntrinsic public static native void call(Word in, Word out, Word key, Word r, int inLength); } public static class DecryptAESCryptStubCall extends AESCryptStubCall { public static final ForeignCallDescriptor DECRYPT = new ForeignCallDescriptor("decrypt", false, void.class, Word.class, Word.class, Word.class, Word.class, int.class); public DecryptAESCryptStubCall(ValueNode in, ValueNode out, ValueNode key, ValueNode r, ValueNode inLength) { super(in, out, key, r, inLength, DECRYPT); } @NodeIntrinsic public static native void call(Word in, Word out, Word key, Word r, int inLength); } }