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