1 /* 2 * Copyright (c) 2016, 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 package org.graalvm.compiler.hotspot.stubs; 24 25 import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.RegisterEffect.DESTROYS_REGISTERS; 26 import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.Transition.SAFEPOINT; 27 import static org.graalvm.compiler.hotspot.meta.HotSpotForeignCallsProviderImpl.REEXECUTABLE; 28 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.clearPendingException; 29 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.registerAsWord; 30 import static org.graalvm.word.LocationIdentity.any; 31 import static jdk.vm.ci.hotspot.HotSpotCallingConventionType.NativeCall; 32 33 import org.graalvm.compiler.api.replacements.Fold; 34 import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor; 35 import org.graalvm.compiler.graph.Node.ConstantNodeParameter; 36 import org.graalvm.compiler.graph.Node.NodeIntrinsic; 37 import org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage; 38 import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig; 39 import org.graalvm.compiler.hotspot.meta.HotSpotForeignCallsProviderImpl; 40 import org.graalvm.compiler.hotspot.meta.HotSpotProviders; 41 import org.graalvm.compiler.hotspot.nodes.StubForeignCallNode; 42 import org.graalvm.compiler.hotspot.word.KlassPointer; 43 import org.graalvm.compiler.options.OptionValues; 44 import org.graalvm.compiler.replacements.nodes.CStringConstant; 45 import org.graalvm.compiler.word.Word; 46 47 import jdk.vm.ci.code.Register; 48 49 /** 50 * Base class for stubs that create a runtime exception. 51 */ 52 public class CreateExceptionStub extends SnippetStub { 53 54 protected CreateExceptionStub(String snippetMethodName, OptionValues options, HotSpotProviders providers, HotSpotForeignCallLinkage linkage) { 55 super(snippetMethodName, options, providers, linkage); 56 } 57 58 @Fold 59 static String getInternalClassName(Class<?> cls) { 60 return cls.getName().replace('.', '/'); 61 } 62 63 private static Word classAsCString(Class<?> cls) { 64 return CStringConstant.cstring(getInternalClassName(cls)); 65 } 66 67 protected static Object createException(Register threadRegister, Class<? extends Throwable> exception) { 68 Word message = null; 69 return createException(threadRegister, exception, message); 70 } 71 72 protected static Object createException(Register threadRegister, Class<? extends Throwable> exception, Word message) { 73 Word thread = registerAsWord(threadRegister); 74 throwAndPostJvmtiException(THROW_AND_POST_JVMTI_EXCEPTION, thread, classAsCString(exception), message); 75 return clearPendingException(thread); 76 } 77 78 protected static Object createException(Register threadRegister, Class<? extends Throwable> exception, KlassPointer klass) { 79 Word thread = registerAsWord(threadRegister); 80 throwKlassExternalNameException(THROW_KLASS_EXTERNAL_NAME_EXCEPTION, thread, classAsCString(exception), klass); 81 return clearPendingException(thread); 82 } 83 84 protected static Object createException(Register threadRegister, Class<? extends Throwable> exception, KlassPointer objKlass, KlassPointer targetKlass) { 85 Word thread = registerAsWord(threadRegister); 86 throwClassCastException(THROW_CLASS_CAST_EXCEPTION, thread, classAsCString(exception), objKlass, targetKlass); 87 return clearPendingException(thread); 88 } 89 90 private static final ForeignCallDescriptor THROW_AND_POST_JVMTI_EXCEPTION = new ForeignCallDescriptor("throw_and_post_jvmti_exception", void.class, Word.class, Word.class, Word.class); 91 private static final ForeignCallDescriptor THROW_KLASS_EXTERNAL_NAME_EXCEPTION = new ForeignCallDescriptor("throw_klass_external_name_exception", void.class, Word.class, Word.class, 92 KlassPointer.class); 93 private static final ForeignCallDescriptor THROW_CLASS_CAST_EXCEPTION = new ForeignCallDescriptor("throw_class_cast_exception", void.class, Word.class, Word.class, KlassPointer.class, 94 KlassPointer.class); 95 96 @NodeIntrinsic(StubForeignCallNode.class) 97 private static native void throwAndPostJvmtiException(@ConstantNodeParameter ForeignCallDescriptor d, Word thread, Word type, Word message); 98 99 @NodeIntrinsic(StubForeignCallNode.class) 100 private static native void throwKlassExternalNameException(@ConstantNodeParameter ForeignCallDescriptor d, Word thread, Word type, KlassPointer klass); 101 102 @NodeIntrinsic(StubForeignCallNode.class) 103 private static native void throwClassCastException(@ConstantNodeParameter ForeignCallDescriptor d, Word thread, Word type, KlassPointer objKlass, KlassPointer targetKlass); 104 105 public static void registerForeignCalls(GraalHotSpotVMConfig c, HotSpotForeignCallsProviderImpl foreignCalls) { 106 foreignCalls.registerForeignCall(THROW_AND_POST_JVMTI_EXCEPTION, c.throwAndPostJvmtiExceptionAddress, NativeCall, DESTROYS_REGISTERS, SAFEPOINT, REEXECUTABLE, any()); 107 foreignCalls.registerForeignCall(THROW_KLASS_EXTERNAL_NAME_EXCEPTION, c.throwKlassExternalNameExceptionAddress, NativeCall, DESTROYS_REGISTERS, SAFEPOINT, REEXECUTABLE, any()); 108 foreignCalls.registerForeignCall(THROW_CLASS_CAST_EXCEPTION, c.throwClassCastExceptionAddress, NativeCall, DESTROYS_REGISTERS, SAFEPOINT, REEXECUTABLE, any()); 109 } 110 }