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/*
* Copyright (c) 2010 Alexander Strange <astrange@ithinksw.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_X86_INTREADWRITE_H
#define AVUTIL_X86_INTREADWRITE_H
#include <stdint.h>
#include "config.h"
#include "libavutil/attributes.h"
#if HAVE_MMX
#if !HAVE_FAST_64BIT && defined(__MMX__)
#define FF_COPY_SWAP_ZERO_USES_MMX
#define AV_COPY64 AV_COPY64
static av_always_inline void AV_COPY64(void *d, const void *s)
{
__asm__("movq %1, %%mm0 \n\t"
"movq %%mm0, %0 \n\t"
: "=m"(*(uint64_t*)d)
: "m" (*(const uint64_t*)s)
: "mm0");
}
#define AV_SWAP64 AV_SWAP64
static av_always_inline void AV_SWAP64(void *a, void *b)
{
__asm__("movq %1, %%mm0 \n\t"
"movq %0, %%mm1 \n\t"
"movq %%mm0, %0 \n\t"
"movq %%mm1, %1 \n\t"
: "+m"(*(uint64_t*)a), "+m"(*(uint64_t*)b)
::"mm0", "mm1");
}
#define AV_ZERO64 AV_ZERO64
static av_always_inline void AV_ZERO64(void *d)
{
__asm__("pxor %%mm0, %%mm0 \n\t"
"movq %%mm0, %0 \n\t"
: "=m"(*(uint64_t*)d)
:: "mm0");
}
#endif /* !HAVE_FAST_64BIT && defined(__MMX__) */
#ifdef __SSE__
#define AV_COPY128 AV_COPY128
static av_always_inline void AV_COPY128(void *d, const void *s)
{
struct v {uint64_t v[2];};
__asm__("movaps %1, %%xmm0 \n\t"
"movaps %%xmm0, %0 \n\t"
: "=m"(*(struct v*)d)
: "m" (*(const struct v*)s)
: "xmm0");
}
#endif /* __SSE__ */
#ifdef __SSE2__
#define AV_ZERO128 AV_ZERO128
static av_always_inline void AV_ZERO128(void *d)
{
struct v {uint64_t v[2];};
__asm__("pxor %%xmm0, %%xmm0 \n\t"
"movdqa %%xmm0, %0 \n\t"
: "=m"(*(struct v*)d)
:: "xmm0");
}
#endif /* __SSE2__ */
#endif /* HAVE_MMX */
#endif /* AVUTIL_X86_INTREADWRITE_H */
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