| 1 | /*===----------------------- clzerointrin.h - CLZERO ----------------------=== |
|---|---|
| 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 | #if !defined __X86INTRIN_H && !defined __IMMINTRIN_H |
| 24 | #error "Never use <clzerointrin.h> directly; include <x86intrin.h> instead." |
| 25 | #endif |
| 26 | |
| 27 | #ifndef __CLZEROINTRIN_H |
| 28 | #define __CLZEROINTRIN_H |
| 29 | |
| 30 | /* Define the default attributes for the functions in this file. */ |
| 31 | #define __DEFAULT_FN_ATTRS \ |
| 32 | __attribute__((__always_inline__, __nodebug__, __target__("clzero"))) |
| 33 | |
| 34 | /// Loads the cache line address and zero's out the cacheline |
| 35 | /// |
| 36 | /// \headerfile <clzerointrin.h> |
| 37 | /// |
| 38 | /// This intrinsic corresponds to the <c> CLZERO </c> instruction. |
| 39 | /// |
| 40 | /// \param __line |
| 41 | /// A pointer to a cacheline which needs to be zeroed out. |
| 42 | static __inline__ void __DEFAULT_FN_ATTRS |
| 43 | _mm_clzero (void * __line) |
| 44 | { |
| 45 | __builtin_ia32_clzero ((void *)__line); |
| 46 | } |
| 47 | |
| 48 | #undef __DEFAULT_FN_ATTRS |
| 49 | |
| 50 | #endif /* __CLZEROINTRIN_H */ |
| 51 |