< prev index next >

src/hotspot/os_cpu/linux_x86/prefetch_linux_x86.inline.hpp

Print this page

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_PREFETCH_LINUX_X86_INLINE_HPP
26 #define OS_CPU_LINUX_X86_PREFETCH_LINUX_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_LINUX_X86_PREFETCH_LINUX_X86_INLINE_HPP

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_PREFETCH_LINUX_X86_INLINE_HPP
26 #define OS_CPU_LINUX_X86_PREFETCH_LINUX_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::read_streaming(void *loc, intx interval) {
38 #ifdef AMD64
39   __asm__ ("prefetchnta (%0,%1,1)" : : "r" (loc), "r" (interval));
40 #endif // AMD64
41 }
42 
43 inline void Prefetch::write(void *loc, intx interval) {
44 #ifdef AMD64
45 
46   // Do not use the 3dnow prefetchw instruction.  It isn't supported on em64t.
47   //  __asm__ ("prefetchw (%0,%1,1)" : : "r" (loc), "r" (interval));
48   __asm__ ("prefetcht0 (%0,%1,1)" : : "r" (loc), "r" (interval));
49 
50 #endif // AMD64
51 }
52 
53 #endif // OS_CPU_LINUX_X86_PREFETCH_LINUX_X86_INLINE_HPP
< prev index next >