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 org.graalvm.compiler.api.replacements.Snippet; 26 import org.graalvm.compiler.api.replacements.Snippet.ConstantParameter; 27 import org.graalvm.compiler.debug.GraalError; 28 import org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage; 29 import org.graalvm.compiler.hotspot.meta.HotSpotProviders; 30 import org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil; 31 import org.graalvm.compiler.hotspot.word.KlassPointer; 32 import org.graalvm.compiler.options.OptionValues; 33 34 import jdk.vm.ci.code.Register; 35 36 /** 37 */ 38 public class ClassCastExceptionStub extends CreateExceptionStub { 39 40 public ClassCastExceptionStub(OptionValues options, HotSpotProviders providers, HotSpotForeignCallLinkage linkage) { 41 super("createClassCastException", options, providers, linkage); 42 } 43 44 @Override 45 protected Object getConstantParameterValue(int index, String name) { 46 GraalError.guarantee(index == 2, "unknown parameter %s at index %d", name, index); 47 return providers.getRegisters().getThreadRegister(); 48 } 49 50 @Snippet 51 private static Object createClassCastException(@Snippet.NonNullParameter Object object, KlassPointer targetKlass, @ConstantParameter Register threadRegister) { 52 KlassPointer objKlass = HotSpotReplacementsUtil.loadHub(object); 53 return createException(threadRegister, ClassCastException.class, objKlass, targetKlass); 54 } 55 }