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1 /*
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2 * Copyright 2003-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #if defined(COMPILER2) || defined(_LP64)
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26
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27 // For Sun Studio inplementation is in solaris_sparc.il
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28 // For gcc inplementation is just below
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29 extern "C" void _Prefetch_read (void *loc, intx interval);
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30 extern "C" void _Prefetch_write(void *loc, intx interval);
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31
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32 inline void Prefetch::read(void *loc, intx interval) {
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33 _Prefetch_read(loc, interval);
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34 }
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35
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36 inline void Prefetch::write(void *loc, intx interval) {
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37 _Prefetch_write(loc, interval);
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38 }
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39
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40 #ifdef _GNU_SOURCE
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41 extern "C" {
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42 inline void _Prefetch_read (void *loc, intx interval) {
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43 __asm__ volatile
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44 ("prefetch [%0+%1], 0" : : "r" (loc), "r" (interval) : "memory" );
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45 }
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46 inline void _Prefetch_write(void *loc, intx interval) {
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47 __asm__ volatile
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48 ("prefetch [%0+%1], 2" : : "r" (loc), "r" (interval) : "memory" );
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49 }
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50 }
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51 #endif // _GNU_SOURCE
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52
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53 #else // defined(COMPILER2) || defined(_LP64)
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54
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55 inline void Prefetch::read (void *loc, intx interval) {}
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56 inline void Prefetch::write(void *loc, intx interval) {}
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57
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58 #endif // defined(COMPILER2) || defined(_LP64)
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