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annotate src/os_cpu/bsd_x86/vm/prefetch_bsd_x86.inline.hpp @ 12157:35b99e7e0af2

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8023381: VM fails to initialize in runtime/CDSCompressedKPtrs/XShareAuto.java runtime/SharedArchiveFile/CdsSameObjectAlignment.java Summary: Improve handling when CDS archive cannot be mapped Reviewed-by: kvn, dholmes, mseledtsov
author hseigel
date Sun, 01 Sep 2013 10:37:01 -0400
parents f08d439fab8c
children
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1 /*
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2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef OS_CPU_BSD_X86_VM_PREFETCH_BSD_X86_INLINE_HPP
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26 #define OS_CPU_BSD_X86_VM_PREFETCH_BSD_X86_INLINE_HPP
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27
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28 #include "runtime/prefetch.hpp"
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29
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30
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31 inline void Prefetch::read (void *loc, intx interval) {
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32 #ifdef AMD64
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33 __asm__ ("prefetcht0 (%0,%1,1)" : : "r" (loc), "r" (interval));
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34 #endif // AMD64
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35 }
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36
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37 inline void Prefetch::write(void *loc, intx interval) {
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38 #ifdef AMD64
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39
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40 // Do not use the 3dnow prefetchw instruction. It isn't supported on em64t.
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41 // __asm__ ("prefetchw (%0,%1,1)" : : "r" (loc), "r" (interval));
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42 __asm__ ("prefetcht0 (%0,%1,1)" : : "r" (loc), "r" (interval));
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43
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44 #endif // AMD64
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45 }
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46
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47 #endif // OS_CPU_BSD_X86_VM_PREFETCH_BSD_X86_INLINE_HPP