Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/snippets/ClassSnippets.java @ 7220:fcae6d960acd
added more compiler intrinsics
author | Christian Haeubl <haeubl@ssw.jku.at> |
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date | Tue, 11 Dec 2012 08:28:00 +0100 |
parents | |
children | 8a3efb8c831d |
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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.snippets; import static com.oracle.graal.hotspot.snippets.HotSpotSnippetUtils.*; import java.lang.reflect.*; import com.oracle.graal.snippets.*; @ClassSubstitution(java.lang.Class.class) public class ClassSnippets implements SnippetsInterface { @InstanceMethodSubstitution public static int getModifiers(final Class<?> thisObj) { Word klass = loadWordFromObject(thisObj, klassOffset()); if (klass == Word.zero()) { return Modifier.ABSTRACT | Modifier.FINAL | Modifier.PUBLIC; } else { return loadIntFromWord(klass, klassModifierFlagsOffset()); } } @InstanceMethodSubstitution public static boolean isInterface(final Class<?> thisObj) { Word klass = loadWordFromObject(thisObj, klassOffset()); if (klass == Word.zero()) { return false; } else { int accessFlags = loadIntFromWord(klass, klassAccessFlagsOffset()); return (accessFlags & Modifier.INTERFACE) != 0; } } @InstanceMethodSubstitution public static boolean isArray(final Class<?> thisObj) { Word klass = loadWordFromObject(thisObj, klassOffset()); if (klass == Word.zero()) { return false; } else { int layoutHelper = loadIntFromWord(klass, klassLayoutHelperOffset()); return (layoutHelper & arrayKlassLayoutHelperIdentifier()) != 0; } } @InstanceMethodSubstitution public static boolean isPrimitive(final Class<?> thisObj) { Word klass = loadWordFromObject(thisObj, klassOffset()); return klass == Word.zero(); } @InstanceMethodSubstitution public static Class<?> getSuperclass(final Class<?> thisObj) { Word klass = loadWordFromObject(thisObj, klassOffset()); if (klass != Word.zero()) { int accessFlags = loadIntFromWord(klass, klassAccessFlagsOffset()); if ((accessFlags & Modifier.INTERFACE) == 0) { int layoutHelper = loadIntFromWord(klass, klassLayoutHelperOffset()); if ((layoutHelper & arrayKlassLayoutHelperIdentifier()) != 0) { return Object.class; } else { Word superKlass = loadWordFromWord(klass, klassSuperKlassOffset()); if (superKlass == Word.zero()) { return null; } else { return (Class<?>) loadObjectFromWord(superKlass, classMirrorOffset()); } } } } return null; } @InstanceMethodSubstitution public static Class<?> getComponentType(final Class<?> thisObj) { Word klass = loadWordFromObject(thisObj, klassOffset()); if (klass != Word.zero()) { int layoutHelper = loadIntFromWord(klass, klassLayoutHelperOffset()); if ((layoutHelper & arrayKlassLayoutHelperIdentifier()) != 0) { return (Class<?>) loadObjectFromWord(klass, arrayKlassComponentMirrorOffset()); } } return null; } }