diff options
Diffstat (limited to 'libavutil/arm')
-rw-r--r-- | libavutil/arm/timer.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/libavutil/arm/timer.h b/libavutil/arm/timer.h new file mode 100644 index 0000000000..0455d6af33 --- /dev/null +++ b/libavutil/arm/timer.h @@ -0,0 +1,39 @@ +/* + * Copyright (c) 2009 Mans Rullgard <mans@mansr.com> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_ARM_TIMER_H +#define AVUTIL_ARM_TIMER_H + +#include <stdint.h> + +#if HAVE_INLINE_ASM && defined(__ARM_ARCH_7A__) + +#define AV_READ_TIME read_time + +static inline uint64_t read_time(void) +{ + unsigned cc; + __asm__ volatile ("mrc p15, 0, %0, c9, c13, 0" : "=r"(cc)); + return cc; +} + +#endif /* HAVE_INLINE_ASM && __ARM_ARCH_7A__ */ + +#endif /* AVUTIL_ARM_TIMER_H */ |