rte_vect.h revision 6b3e017e
1/*-
2 *   BSD LICENSE
3 *
4 *   Copyright(c) 2015 Cavium Networks. All rights reserved.
5 *
6 *   Redistribution and use in source and binary forms, with or without
7 *   modification, are permitted provided that the following conditions
8 *   are met:
9 *
10 *     * Redistributions of source code must retain the above copyright
11 *       notice, this list of conditions and the following disclaimer.
12 *     * Redistributions in binary form must reproduce the above copyright
13 *       notice, this list of conditions and the following disclaimer in
14 *       the documentation and/or other materials provided with the
15 *       distribution.
16 *     * Neither the name of Cavium Networks nor the names of its
17 *       contributors may be used to endorse or promote products derived
18 *       from this software without specific prior written permission.
19 *
20 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#ifndef _RTE_VECT_ARM_H_
34#define _RTE_VECT_ARM_H_
35
36#include <stdint.h>
37#include "arm_neon.h"
38
39#ifdef __cplusplus
40extern "C" {
41#endif
42
43typedef int32x4_t xmm_t;
44
45#define	XMM_SIZE	(sizeof(xmm_t))
46#define	XMM_MASK	(XMM_SIZE - 1)
47
48typedef union rte_xmm {
49	xmm_t    x;
50	uint8_t  u8[XMM_SIZE / sizeof(uint8_t)];
51	uint16_t u16[XMM_SIZE / sizeof(uint16_t)];
52	uint32_t u32[XMM_SIZE / sizeof(uint32_t)];
53	uint64_t u64[XMM_SIZE / sizeof(uint64_t)];
54	double   pd[XMM_SIZE / sizeof(double)];
55} __attribute__((aligned(16))) rte_xmm_t;
56
57#ifdef RTE_ARCH_ARM
58/* NEON intrinsic vqtbl1q_u8() is not supported in ARMv7-A(AArch32) */
59static __inline uint8x16_t
60vqtbl1q_u8(uint8x16_t a, uint8x16_t b)
61{
62	uint8_t i, pos;
63	rte_xmm_t rte_a, rte_b, rte_ret;
64
65	vst1q_u8(rte_a.u8, a);
66	vst1q_u8(rte_b.u8, b);
67
68	for (i = 0; i < 16; i++) {
69		pos = rte_b.u8[i];
70		if (pos < 16)
71			rte_ret.u8[i] = rte_a.u8[pos];
72		else
73			rte_ret.u8[i] = 0;
74	}
75
76	return vld1q_u8(rte_ret.u8);
77}
78#endif
79
80#ifdef __cplusplus
81}
82#endif
83
84#endif
85