2 * Copyright (c) 2010 Alexander Strange <astrange@ithinksw.com>
4 * This file is part of FFmpeg.
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.
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.
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
21 #ifndef AVUTIL_X86_INTREADWRITE_H
22 #define AVUTIL_X86_INTREADWRITE_H
26 #include "libavutil/attributes.h"
30 #if !HAVE_FAST_64BIT && defined(__MMX__)
32 #define AV_COPY64 AV_COPY64
33 static av_always_inline void AV_COPY64(void *d, const void *s)
35 __asm__("movq %1, %%mm0 \n\t"
38 : "m" (*(const uint64_t*)s)
42 #define AV_SWAP64 AV_SWAP64
43 static av_always_inline void AV_SWAP64(void *a, void *b)
45 __asm__("movq %1, %%mm0 \n\t"
49 : "+m"(*(uint64_t*)a), "+m"(*(uint64_t*)b)
53 #define AV_ZERO64 AV_ZERO64
54 static av_always_inline void AV_ZERO64(void *d)
56 __asm__("pxor %%mm0, %%mm0 \n\t"
62 #endif /* !HAVE_FAST_64BIT && defined(__MMX__) */
66 #define AV_COPY128 AV_COPY128
67 static av_always_inline void AV_COPY128(void *d, const void *s)
69 struct v {uint64_t v[2];};
71 __asm__("movaps %1, %%xmm0 \n\t"
72 "movaps %%xmm0, %0 \n\t"
74 : "m" (*(const struct v*)s)
82 #define AV_ZERO128 AV_ZERO128
83 static av_always_inline void AV_ZERO128(void *d)
85 struct v {uint64_t v[2];};
87 __asm__("pxor %%xmm0, %%xmm0 \n\t"
88 "movdqa %%xmm0, %0 \n\t"
97 #endif /* AVUTIL_X86_INTREADWRITE_H */