--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/stubs/OutOfBoundsExceptionStub.java 2017-02-15 17:00:34.870809324 -0800 @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2016, 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 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.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(HotSpotProviders providers, HotSpotForeignCallLinkage linkage) { + super("createOutOfBoundsException", providers, linkage); + } + + private static final int MAX_INT_STRING_SIZE = Integer.toString(Integer.MIN_VALUE).length(); + + @Override + protected Object getConstantParameterValue(int index, String name) { + switch (index) { + case 1: + return providers.getRegisters().getThreadRegister(); + case 2: + int wordSize = providers.getWordTypes().getWordKind().getByteCount(); + // (MAX_INT_STRING_SIZE + 1) / wordSize, rounded up + return MAX_INT_STRING_SIZE / wordSize + 1; + default: + throw GraalError.shouldNotReachHere("unknown parameter " + name + " at index " + index); + } + } + + @Snippet + private static Object createOutOfBoundsException(int idx, @ConstantParameter Register threadRegister, @ConstantParameter int bufferSizeInWords) { + Word buffer = AllocaNode.alloca(bufferSizeInWords); + + long number = idx; + if (number < 0) { + number = -number; + } + + Word ptr = buffer.add(MAX_INT_STRING_SIZE); + ptr.writeByte(0, (byte) 0); + do { + long digit = number % 10; + number /= 10; + + ptr = ptr.subtract(1); + ptr.writeByte(0, (byte) ('0' + digit)); + } while (number > 0); + + if (idx < 0) { + ptr = ptr.subtract(1); + ptr.writeByte(0, (byte) '-'); + } + + return createException(threadRegister, ArrayIndexOutOfBoundsException.class, ptr); + } +}