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comparison libavutil/arm/timer.h @ 2:897f711a7157

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rearrange to work with autoconf
author Nina Engelhardt <nengel@mailbox.tu-berlin.de>
date Tue, 25 Sep 2012 15:55:33 +0200
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1 /*
2 * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef AVUTIL_ARM_TIMER_H
22 #define AVUTIL_ARM_TIMER_H
23
24 #include <stdint.h>
25 #include "config.h"
26
27 #if HAVE_INLINE_ASM && defined(__ARM_ARCH_7A__)
28
29 #define AV_READ_TIME read_time
30
31 static inline uint64_t read_time(void)
32 {
33 unsigned cc;
34 __asm__ volatile ("mrc p15, 0, %0, c9, c13, 0" : "=r"(cc));
35 return cc;
36 }
37
38 #endif /* HAVE_INLINE_ASM && __ARM_ARCH_7A__ */
39
40 #endif /* AVUTIL_ARM_TIMER_H */