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