1/* 2 * Copyright (c) 2010 Alexander Strange <astrange@ithinksw.com> 3 * 4 * This file is part of Libav. 5 * 6 * Libav 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. 10 * 11 * Libav 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. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with Libav; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21#ifndef AVUTIL_X86_INTREADWRITE_H 22#define AVUTIL_X86_INTREADWRITE_H 23 24#include <stdint.h> 25#include "config.h" 26#include "libavutil/attributes.h" 27 28#if HAVE_MMX 29 30#if !HAVE_FAST_64BIT && defined(__MMX__) 31 32#define AV_COPY64 AV_COPY64 33static av_always_inline void AV_COPY64(void *d, const void *s) 34{ 35 __asm__("movq %1, %%mm0 \n\t" 36 "movq %%mm0, %0 \n\t" 37 : "=m"(*(uint64_t*)d) 38 : "m" (*(const uint64_t*)s) 39 : "mm0"); 40} 41 42#define AV_SWAP64 AV_SWAP64 43static av_always_inline void AV_SWAP64(void *a, void *b) 44{ 45 __asm__("movq %1, %%mm0 \n\t" 46 "movq %0, %%mm1 \n\t" 47 "movq %%mm0, %0 \n\t" 48 "movq %%mm1, %1 \n\t" 49 : "+m"(*(uint64_t*)a), "+m"(*(uint64_t*)b) 50 ::"mm0", "mm1"); 51} 52 53#define AV_ZERO64 AV_ZERO64 54static av_always_inline void AV_ZERO64(void *d) 55{ 56 __asm__("pxor %%mm0, %%mm0 \n\t" 57 "movq %%mm0, %0 \n\t" 58 : "=m"(*(uint64_t*)d) 59 :: "mm0"); 60} 61 62#endif /* !HAVE_FAST_64BIT && defined(__MMX__) */ 63 64#ifdef __SSE__ 65 66#define AV_COPY128 AV_COPY128 67static av_always_inline void AV_COPY128(void *d, const void *s) 68{ 69 struct v {uint64_t v[2];}; 70 71 __asm__("movaps %1, %%xmm0 \n\t" 72 "movaps %%xmm0, %0 \n\t" 73 : "=m"(*(struct v*)d) 74 : "m" (*(const struct v*)s) 75 : "xmm0"); 76} 77 78#endif /* __SSE__ */ 79 80#ifdef __SSE2__ 81 82#define AV_ZERO128 AV_ZERO128 83static av_always_inline void AV_ZERO128(void *d) 84{ 85 struct v {uint64_t v[2];}; 86 87 __asm__("pxor %%xmm0, %%xmm0 \n\t" 88 "movdqa %%xmm0, %0 \n\t" 89 : "=m"(*(struct v*)d) 90 :: "xmm0"); 91} 92 93#endif /* __SSE2__ */ 94 95#endif /* HAVE_MMX */ 96 97#endif /* AVUTIL_X86_INTREADWRITE_H */ 98