From d0cd2a8c461f975eeaeff2900e95fa8ec0931ef8 Mon Sep 17 00:00:00 2001 From: Janne Grunau Date: Mon, 25 Nov 2013 16:58:54 +0100 Subject: aarch64: bswap inline assembly Signed-off-by: Janne Grunau --- libavutil/aarch64/bswap.h | 50 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 libavutil/aarch64/bswap.h (limited to 'libavutil/aarch64') diff --git a/libavutil/aarch64/bswap.h b/libavutil/aarch64/bswap.h new file mode 100644 index 0000000000..0c001cec19 --- /dev/null +++ b/libavutil/aarch64/bswap.h @@ -0,0 +1,50 @@ +/* + * 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 +#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 */ -- cgit v1.2.3