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annotate src/cpu/ppc/vm/globalDefinitions_ppc.hpp @ 20304:a22acf6d7598

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8048112: G1 Full GC needs to support the case when the very first region is not available Summary: Refactor preparation for compaction during Full GC so that it lazily initializes the first compaction point. This also avoids problems later when the first region may not be committed. Also reviewed by K. Barrett. Reviewed-by: brutisso
author tschatzl
date Mon, 21 Jul 2014 10:00:31 +0200
parents 3514ee402842
children f6bde7889409
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1 /*
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2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * Copyright 2012, 2013 SAP AG. All rights reserved.
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 *
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6 * This code is free software; you can redistribute it and/or modify it
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7 * under the terms of the GNU General Public License version 2 only, as
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8 * published by the Free Software Foundation.
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9 *
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10 * This code is distributed in the hope that it will be useful, but WITHOUT
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * version 2 for more details (a copy is included in the LICENSE file that
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14 * accompanied this code).
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15 *
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16 * You should have received a copy of the GNU General Public License version
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17 * 2 along with this work; if not, write to the Free Software Foundation,
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 *
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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21 * or visit www.oracle.com if you need additional information or have any
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22 * questions.
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23 *
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24 */
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25
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26 #ifndef CPU_PPC_VM_GLOBALDEFINITIONS_PPC_HPP
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27 #define CPU_PPC_VM_GLOBALDEFINITIONS_PPC_HPP
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28
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29 // Size of PPC Instructions
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30 const int BytesPerInstWord = 4;
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31
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32 const int StackAlignmentInBytes = 16;
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33
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34 // Indicates whether the C calling conventions require that
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35 // 32-bit integer argument values are properly extended to 64 bits.
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36 // If set, SharedRuntime::c_calling_convention() must adapt
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37 // signatures accordingly.
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38 const bool CCallingConventionRequiresIntsAsLongs = true;
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39
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40 // The PPC CPUs are NOT multiple-copy-atomic.
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41 #define CPU_NOT_MULTIPLE_COPY_ATOMIC
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42
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43 #endif // CPU_PPC_VM_GLOBALDEFINITIONS_PPC_HPP