| /* |
| * Copyright (c) 2016, 2018, 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.stubs; |
| |
| import static org.graalvm.compiler.hotspot.stubs.StubUtil.printNumber; |
| import static org.graalvm.compiler.hotspot.stubs.StubUtil.printString; |
| |
| import org.graalvm.compiler.api.replacements.Snippet; |
| import org.graalvm.compiler.api.replacements.Snippet.ConstantParameter; |
| import org.graalvm.compiler.debug.GraalError; |
| import org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage; |
| import org.graalvm.compiler.hotspot.meta.HotSpotProviders; |
| import org.graalvm.compiler.hotspot.nodes.AllocaNode; |
| import org.graalvm.compiler.options.OptionValues; |
| import org.graalvm.compiler.serviceprovider.GraalServices; |
| import org.graalvm.compiler.word.Word; |
| |
| import jdk.vm.ci.code.Register; |
| |
| /** |
| * Stub to allocate an {@link ArrayIndexOutOfBoundsException} thrown by a bytecode. |
| */ |
| public class OutOfBoundsExceptionStub extends CreateExceptionStub { |
| public OutOfBoundsExceptionStub(OptionValues options, HotSpotProviders providers, HotSpotForeignCallLinkage linkage) { |
| super("createOutOfBoundsException", options, providers, linkage); |
| } |
| |
| // JDK-8201593: Print array length in ArrayIndexOutOfBoundsException. |
| private static final boolean PRINT_LENGTH_IN_EXCEPTION = GraalServices.JAVA_SPECIFICATION_VERSION >= 11; |
| private static final int MAX_INT_STRING_SIZE = Integer.toString(Integer.MIN_VALUE).length(); |
| private static final String STR_INDEX = "Index "; |
| private static final String STR_OUTOFBOUNDSFORLENGTH = " out of bounds for length "; |
| |
| @Override |
| protected Object getConstantParameterValue(int index, String name) { |
| switch (index) { |
| case 2: |
| return providers.getRegisters().getThreadRegister(); |
| case 3: |
| int wordSize = providers.getWordTypes().getWordKind().getByteCount(); |
| int bytes; |
| if (PRINT_LENGTH_IN_EXCEPTION) { |
| bytes = STR_INDEX.length() + STR_OUTOFBOUNDSFORLENGTH.length() + 2 * MAX_INT_STRING_SIZE; |
| } else { |
| bytes = MAX_INT_STRING_SIZE; |
| } |
| // (required words for maximum length + nullbyte), rounded up |
| return (bytes + 1) / wordSize + 1; |
| case 4: |
| return PRINT_LENGTH_IN_EXCEPTION; |
| default: |
| throw GraalError.shouldNotReachHere("unknown parameter " + name + " at index " + index); |
| } |
| } |
| |
| @Snippet |
| private static Object createOutOfBoundsException(int idx, int length, @ConstantParameter Register threadRegister, @ConstantParameter int bufferSizeInWords, |
| @ConstantParameter boolean printLengthInException) { |
| Word buffer = AllocaNode.alloca(bufferSizeInWords); |
| Word ptr; |
| if (printLengthInException) { |
| ptr = printString(buffer, STR_INDEX); |
| ptr = printNumber(ptr, idx); |
| ptr = printString(ptr, STR_OUTOFBOUNDSFORLENGTH); |
| ptr = printNumber(ptr, length); |
| } else { |
| ptr = printNumber(buffer, idx); |
| } |
| ptr.writeByte(0, (byte) 0); |
| return createException(threadRegister, ArrayIndexOutOfBoundsException.class, buffer); |
| } |
| } |