1 /*
 2  * Copyright (c) 2003, 2019, 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_BSD_X86_PREFETCH_BSD_X86_INLINE_HPP
26 #define OS_CPU_BSD_X86_PREFETCH_BSD_X86_INLINE_HPP
27 
28 #include "runtime/prefetch.hpp"
29 
30 
31 inline 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 
37 inline 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_BSD_X86_PREFETCH_BSD_X86_INLINE_HPP