1 /* 2 * Copyright (c) 2016, 2018, 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.stubs; 26 27 import static jdk.vm.ci.hotspot.HotSpotCallingConventionType.NativeCall; 28 import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.Reexecutability.REEXECUTABLE; 29 import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.RegisterEffect.DESTROYS_REGISTERS; 30 import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.Transition.SAFEPOINT; 31 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.clearPendingException; 32 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.registerAsWord; 33 import static jdk.internal.vm.compiler.word.LocationIdentity.any; 34 35 import org.graalvm.compiler.api.replacements.Fold; 36 import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor; 37 import org.graalvm.compiler.graph.Node.ConstantNodeParameter; 38 import org.graalvm.compiler.graph.Node.NodeIntrinsic; 39 import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig; 40 import org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage; 41 import org.graalvm.compiler.hotspot.meta.HotSpotForeignCallsProviderImpl; 42 import org.graalvm.compiler.hotspot.meta.HotSpotProviders; 43 import org.graalvm.compiler.hotspot.nodes.StubForeignCallNode; 44 import org.graalvm.compiler.hotspot.word.KlassPointer; 45 import org.graalvm.compiler.options.OptionValues; 46 import org.graalvm.compiler.replacements.nodes.CStringConstant; 47 import org.graalvm.compiler.word.Word; 48 import jdk.internal.vm.compiler.word.WordFactory; 49 50 import jdk.vm.ci.code.Register; 51 52 /** 53 * Base class for stubs that create a runtime exception. 54 */ 55 public class CreateExceptionStub extends SnippetStub { 56 57 protected CreateExceptionStub(String snippetMethodName, OptionValues options, HotSpotProviders providers, HotSpotForeignCallLinkage linkage) { 58 super(snippetMethodName, options, providers, linkage); 59 } 60 61 @Fold 62 static String getInternalClassName(Class<?> cls) { 63 return cls.getName().replace('.', '/'); 64 } 65 66 private static Word classAsCString(Class<?> cls) { 67 return CStringConstant.cstring(getInternalClassName(cls)); 68 } 69 70 protected static Object createException(Register threadRegister, Class<? extends Throwable> exception) { 71 Word message = WordFactory.zero(); 72 return createException(threadRegister, exception, message); 73 } 74 75 protected static Object createException(Register threadRegister, Class<? extends Throwable> exception, Word message) { 76 Word thread = registerAsWord(threadRegister); 77 throwAndPostJvmtiException(THROW_AND_POST_JVMTI_EXCEPTION, thread, classAsCString(exception), message); 78 return clearPendingException(thread); 79 } 80 81 protected static Object createException(Register threadRegister, Class<? extends Throwable> exception, KlassPointer klass) { 82 Word thread = registerAsWord(threadRegister); 83 throwKlassExternalNameException(THROW_KLASS_EXTERNAL_NAME_EXCEPTION, thread, classAsCString(exception), klass); 84 return clearPendingException(thread); 85 } 86 87 protected static Object createException(Register threadRegister, Class<? extends Throwable> exception, KlassPointer objKlass, KlassPointer targetKlass) { 88 Word thread = registerAsWord(threadRegister); 89 throwClassCastException(THROW_CLASS_CAST_EXCEPTION, thread, classAsCString(exception), objKlass, targetKlass); 90 return clearPendingException(thread); 91 } 92 93 private static final ForeignCallDescriptor THROW_AND_POST_JVMTI_EXCEPTION = new ForeignCallDescriptor("throw_and_post_jvmti_exception", void.class, Word.class, Word.class, Word.class); 94 private static final ForeignCallDescriptor THROW_KLASS_EXTERNAL_NAME_EXCEPTION = new ForeignCallDescriptor("throw_klass_external_name_exception", void.class, Word.class, Word.class, 95 KlassPointer.class); 96 private static final ForeignCallDescriptor THROW_CLASS_CAST_EXCEPTION = new ForeignCallDescriptor("throw_class_cast_exception", void.class, Word.class, Word.class, KlassPointer.class, 97 KlassPointer.class); 98 99 @NodeIntrinsic(StubForeignCallNode.class) 100 private static native void throwAndPostJvmtiException(@ConstantNodeParameter ForeignCallDescriptor d, Word thread, Word type, Word message); 101 102 @NodeIntrinsic(StubForeignCallNode.class) 103 private static native void throwKlassExternalNameException(@ConstantNodeParameter ForeignCallDescriptor d, Word thread, Word type, KlassPointer klass); 104 105 @NodeIntrinsic(StubForeignCallNode.class) 106 private static native void throwClassCastException(@ConstantNodeParameter ForeignCallDescriptor d, Word thread, Word type, KlassPointer objKlass, KlassPointer targetKlass); 107 108 public static void registerForeignCalls(GraalHotSpotVMConfig c, HotSpotForeignCallsProviderImpl foreignCalls) { 109 foreignCalls.registerForeignCall(THROW_AND_POST_JVMTI_EXCEPTION, c.throwAndPostJvmtiExceptionAddress, NativeCall, DESTROYS_REGISTERS, SAFEPOINT, REEXECUTABLE, any()); 110 foreignCalls.registerForeignCall(THROW_KLASS_EXTERNAL_NAME_EXCEPTION, c.throwKlassExternalNameExceptionAddress, NativeCall, DESTROYS_REGISTERS, SAFEPOINT, REEXECUTABLE, any()); 111 foreignCalls.registerForeignCall(THROW_CLASS_CAST_EXCEPTION, c.throwClassCastExceptionAddress, NativeCall, DESTROYS_REGISTERS, SAFEPOINT, REEXECUTABLE, any()); 112 } 113 }