Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/asm/BaseIndexScaleDispAddress.java @ 3779:04760e41b01e
7016112: CMS: crash during promotion testing
Summary: Also reviewed by mikael.gerdin@oracle.com; stdlib:qsort() does byte-by-byte swapping on Windows. This leads to pointer shearing. Fix is to implement a quicksort that does full pointer updates.
Reviewed-by: never, coleenp, ysr
author | brutisso |
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date | Tue, 28 Jun 2011 14:23:27 +0200 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2002, 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 sun.jvm.hotspot.asm; // address is calculated as (base + (index * scale) + displacement) // optionally index is auto incremented or decremented public abstract class BaseIndexScaleDispAddress extends IndirectAddress { private final Register base, index; private final int scale; private final long disp; private boolean isAutoIncr; private boolean isAutoDecr; public BaseIndexScaleDispAddress(Register base, Register index, long disp, int scale) { this.base = base; this.index = index; this.disp = disp; this.scale = scale; } public BaseIndexScaleDispAddress(Register base, Register index, long disp) { this(base, index, disp, 1); } public BaseIndexScaleDispAddress(Register base, Register index) { this(base, index, 0L, 1); } public BaseIndexScaleDispAddress(Register base, long disp) { this(base, null, disp, 1); } public Register getBase() { return base; } public Register getIndex() { return index; } public int getScale() { return scale; } public long getDisplacement() { return disp; } // is the index auto decremented or incremented? public boolean isAutoIncrement() { return isAutoIncr; } public void setAutoIncrement(boolean value) { isAutoIncr = value; } public boolean isAutoDecrement() { return isAutoDecr; } public void setAutoDecrement(boolean value) { isAutoDecr = value; } }