1/* 2 * Copyright (c) 2003, 2010, 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#ifndef OS_CPU_LINUX_X86_VM_PREFETCH_LINUX_X86_INLINE_HPP 26#define OS_CPU_LINUX_X86_VM_PREFETCH_LINUX_X86_INLINE_HPP 27 28#include "runtime/prefetch.hpp" 29 30 31inline void Prefetch::read (void *loc, intx interval) { 32#ifdef AMD64 33 __asm__ ("prefetcht0 (%0,%1,1)" : : "r" (loc), "r" (interval)); 34#endif // AMD64 35} 36 37inline void Prefetch::write(void *loc, intx interval) { 38#ifdef AMD64 39 40 // Do not use the 3dnow prefetchw instruction. It isn't supported on em64t. 41 // __asm__ ("prefetchw (%0,%1,1)" : : "r" (loc), "r" (interval)); 42 __asm__ ("prefetcht0 (%0,%1,1)" : : "r" (loc), "r" (interval)); 43 44#endif // AMD64 45} 46 47#endif // OS_CPU_LINUX_X86_VM_PREFETCH_LINUX_X86_INLINE_HPP 48