| /* |
| * Copyright (c) 2012, 2014, 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 org.graalvm.compiler.hotspot.replacements; |
| |
| import static org.graalvm.compiler.hotspot.GraalHotSpotVMConfig.INJECTED_VMCONFIG; |
| import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.ARRAY_KLASS_COMPONENT_MIRROR; |
| import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.KLASS_ACCESS_FLAGS_LOCATION; |
| import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.KLASS_MODIFIER_FLAGS_LOCATION; |
| import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.KLASS_SUPER_KLASS_LOCATION; |
| import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.arrayKlassComponentMirrorOffset; |
| import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.klassAccessFlagsOffset; |
| import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.klassIsArray; |
| import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.klassModifierFlagsOffset; |
| import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.klassSuperKlassOffset; |
| |
| import java.lang.reflect.Modifier; |
| |
| import org.graalvm.compiler.api.replacements.ClassSubstitution; |
| import org.graalvm.compiler.api.replacements.MethodSubstitution; |
| import org.graalvm.compiler.hotspot.word.KlassPointer; |
| import org.graalvm.compiler.nodes.PiNode; |
| import org.graalvm.compiler.nodes.SnippetAnchorNode; |
| |
| // JaCoCo Exclude |
| |
| /** |
| * Substitutions for {@link java.lang.Class} methods. |
| */ |
| @ClassSubstitution(Class.class) |
| public class HotSpotClassSubstitutions { |
| |
| @MethodSubstitution(isStatic = false) |
| public static int getModifiers(final Class<?> thisObj) { |
| KlassPointer klass = ClassGetHubNode.readClass(thisObj); |
| if (klass.isNull()) { |
| // Class for primitive type |
| return Modifier.ABSTRACT | Modifier.FINAL | Modifier.PUBLIC; |
| } else { |
| return klass.readInt(klassModifierFlagsOffset(INJECTED_VMCONFIG), KLASS_MODIFIER_FLAGS_LOCATION); |
| } |
| } |
| |
| @MethodSubstitution(isStatic = false) |
| public static boolean isInterface(final Class<?> thisObj) { |
| KlassPointer klass = ClassGetHubNode.readClass(thisObj); |
| if (klass.isNull()) { |
| // Class for primitive type |
| return false; |
| } else { |
| int accessFlags = klass.readInt(klassAccessFlagsOffset(INJECTED_VMCONFIG), KLASS_ACCESS_FLAGS_LOCATION); |
| return (accessFlags & Modifier.INTERFACE) != 0; |
| } |
| } |
| |
| @MethodSubstitution(isStatic = false) |
| public static boolean isArray(final Class<?> thisObj) { |
| KlassPointer klass = ClassGetHubNode.readClass(thisObj); |
| if (klass.isNull()) { |
| // Class for primitive type |
| return false; |
| } else { |
| KlassPointer klassNonNull = ClassGetHubNode.piCastNonNull(klass, SnippetAnchorNode.anchor()); |
| return klassIsArray(klassNonNull); |
| } |
| } |
| |
| @MethodSubstitution(isStatic = false) |
| public static boolean isPrimitive(final Class<?> thisObj) { |
| KlassPointer klass = ClassGetHubNode.readClass(thisObj); |
| return klass.isNull(); |
| } |
| |
| @MethodSubstitution(isStatic = false) |
| public static Class<?> getSuperclass(final Class<?> thisObj) { |
| KlassPointer klass = ClassGetHubNode.readClass(thisObj); |
| if (!klass.isNull()) { |
| KlassPointer klassNonNull = ClassGetHubNode.piCastNonNull(klass, SnippetAnchorNode.anchor()); |
| int accessFlags = klassNonNull.readInt(klassAccessFlagsOffset(INJECTED_VMCONFIG), KLASS_ACCESS_FLAGS_LOCATION); |
| if ((accessFlags & Modifier.INTERFACE) == 0) { |
| if (klassIsArray(klassNonNull)) { |
| return Object.class; |
| } else { |
| KlassPointer superKlass = klassNonNull.readKlassPointer(klassSuperKlassOffset(INJECTED_VMCONFIG), KLASS_SUPER_KLASS_LOCATION); |
| if (superKlass.isNull()) { |
| return null; |
| } else { |
| KlassPointer superKlassNonNull = ClassGetHubNode.piCastNonNull(superKlass, SnippetAnchorNode.anchor()); |
| return HubGetClassNode.readClass(superKlassNonNull); |
| } |
| } |
| } |
| } else { |
| // Class for primitive type |
| } |
| return null; |
| } |
| |
| @MethodSubstitution(isStatic = false) |
| public static Class<?> getComponentType(final Class<?> thisObj) { |
| KlassPointer klass = ClassGetHubNode.readClass(thisObj); |
| if (!klass.isNull()) { |
| KlassPointer klassNonNull = ClassGetHubNode.piCastNonNull(klass, SnippetAnchorNode.anchor()); |
| if (klassIsArray(klassNonNull)) { |
| return PiNode.asNonNullClass(klassNonNull.readObject(arrayKlassComponentMirrorOffset(INJECTED_VMCONFIG), ARRAY_KLASS_COMPONENT_MIRROR)); |
| } |
| } else { |
| // Class for primitive type |
| } |
| return null; |
| } |
| } |