1 /*****************************************************************************
2 * bitstream-a.S: aarch64 bitstream functions
3 *****************************************************************************
4 * Copyright (C) 2014-2015 x264 project
6 * Authors: Janne Grunau <janne-x264@jannau.net>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
22 * This program is also available under a commercial proprietary license.
23 * For more information, contact us at licensing@x264.com.
24 *****************************************************************************/
28 function x264_nal_escape_neon, export=1
40 ld1 {v1.16b}, [x1], #16
41 ext v2.16b, v0.16b, v1.16b, #14
42 ext v3.16b, v0.16b, v1.16b, #15
43 cmhi v7.16b, v4.16b, v1.16b
44 cmeq v5.16b, v2.16b, #0
45 cmeq v6.16b, v3.16b, #0
46 and v5.16b, v5.16b, v7.16b
47 and v5.16b, v5.16b, v6.16b
55 orr w5, w4, w5, lsl #8
58 orr w9, w4, w5, lsl #16
62 orr w5, w3, w5, lsl #8
66 orr w5, w4, w5, lsl #8
77 st1 {v1.16b}, [x0], #16