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FFmpeg/libavutil/aarch64/bswap.h
Janne Grunau d0cd2a8c46 aarch64: bswap inline assembly
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
2014-01-14 22:19:38 +01:00

51 lines
1.4 KiB
C

/*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_AARCH64_BSWAP_H
#define AVUTIL_AARCH64_BSWAP_H
#include <stdint.h>
#include "config.h"
#include "libavutil/attributes.h"
#if HAVE_INLINE_ASM
#define av_bswap16 av_bswap16
static av_always_inline av_const unsigned av_bswap16(unsigned x)
{
__asm__("rev16 %w0, %w0" : "+r"(x));
return x;
}
#define av_bswap32 av_bswap32
static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
{
__asm__("rev %w0, %w0" : "+r"(x));
return x;
}
#define av_bswap64 av_bswap64
static av_always_inline av_const uint64_t av_bswap64(uint64_t x)
{
__asm__("rev %0, %0" : "+r"(x));
return x;
}
#endif /* HAVE_INLINE_ASM */
#endif /* AVUTIL_AARCH64_BSWAP_H */