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1 /*-
2  * Copyright 2013 John-Mark Gurney
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  *
28  */
29
30 #ifndef _WMMINTRIN_PCLMUL_H_
31 #define _WMMINTRIN_PCLMUL_H_
32
33 #include <emmintrin.h>
34
35 /*
36  * c selects which parts of a and b to multiple:
37  *  0x00:       a[ 63: 0] * b[ 63: 0]
38  *  0x01:       a[127:64] * b[ 63: 0]
39  *  0x10:       a[ 63: 0] * b[127:64]
40  *  0x11:       a[127:64] * b[127:64]
41  */
42 #define _mm_clmulepi64_si128(a, b, c)                                   \
43 ({                                                                      \
44         __m128i _a = (a);                                               \
45         __m128i _b = (b);                                               \
46                                                                         \
47         __asm__("pclmulqdq %3, %2, %0": "=x" (_a): "0" (_a), "xm" (_b), \
48             "i" (c));                                                   \
49                                                                         \
50         _a;                                                             \
51 })
52
53 #endif  /* _WMMINTRIN_PCLMUL_H_ */