/* * Copyright (c) 2010 Alexander Strange <astrange@ithinksw.com> * * 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_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 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 */