clwbintrin.h revision 326941 
1/*===---- clwbintrin.h - CLWB intrinsic ------------------------------------===
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
19 * THE SOFTWARE.
20 *
21 *===-----------------------------------------------------------------------===
22 */
23
24#ifndef __IMMINTRIN_H
25#error "Never use <clwbintrin.h> directly; include <immintrin.h> instead."
26#endif
27
28#ifndef __CLWBINTRIN_H
29#define __CLWBINTRIN_H
30
31/* Define the default attributes for the functions in this file. */
32#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__,  __target__("clwb")))
33
34/// \brief Writes back to memory the cache line (if modified) that contains the
35/// linear address specified in \a __p from any level of the cache hierarchy in
36/// the cache coherence domain
37///
38/// \headerfile <immintrin.h>
39///
40/// This intrinsic corresponds to the <c> CLWB </c> instruction.
41///
42/// \param __p
43///    A pointer to the memory location used to identify the cache line to be
44///    written back.
45static __inline__ void __DEFAULT_FN_ATTRS
46_mm_clwb(void const *__p) {
47  __builtin_ia32_clwb(__p);
48}
49
50#undef __DEFAULT_FN_ATTRS
51
52#endif
53