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1 /*
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2 * Copyright (c) 2010 Alexander Strange <astrange@ithinksw.com>
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3 *
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4 * This file is part of FFmpeg.
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5 *
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6 * FFmpeg is free software; you can redistribute it and/or
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7 * modify it under the terms of the GNU Lesser General Public
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8 * License as published by the Free Software Foundation; either
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9 * version 2.1 of the License, or (at your option) any later version.
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10 *
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11 * FFmpeg is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * Lesser General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU Lesser General Public
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17 * License along with FFmpeg; if not, write to the Free Software
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18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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19 */
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20
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21 #ifndef AVUTIL_X86_INTREADWRITE_H
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22 #define AVUTIL_X86_INTREADWRITE_H
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23
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24 #include <stdint.h>
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25 #include "config.h"
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26 #include "libavutil/attributes.h"
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27
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28 #if HAVE_MMX
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29
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30 #if defined(__MMX__)
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31
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32 #define AV_COPY64 AV_COPY64
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33 static av_always_inline void AV_COPY64(void *d, const void *s)
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34 {
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35 __asm__("movq %1, %%mm0 \n\t"
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36 "movq %%mm0, %0 \n\t"
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37 : "=m"(*(uint64_t*)d)
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38 : "m" (*(const uint64_t*)s)
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39 : "mm0");
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40 }
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41
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42 #define AV_SWAP64 AV_SWAP64
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43 static av_always_inline void AV_SWAP64(void *a, void *b)
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44 {
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45 __asm__("movq %1, %%mm0 \n\t"
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46 "movq %0, %%mm1 \n\t"
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47 "movq %%mm0, %0 \n\t"
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48 "movq %%mm1, %1 \n\t"
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49 : "+m"(*(uint64_t*)a), "+m"(*(uint64_t*)b)
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50 ::"mm0", "mm1");
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51 }
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52
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53 #define AV_ZERO64 AV_ZERO64
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54 static av_always_inline void AV_ZERO64(void *d)
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55 {
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56 __asm__("pxor %%mm0, %%mm0 \n\t"
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57 "movq %%mm0, %0 \n\t"
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58 : "=m"(*(uint64_t*)d)
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59 :: "mm0");
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60 }
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61
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62 #endif /* !HAVE_FAST_64BIT && defined(__MMX__) */
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63
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64 #ifdef __SSE__
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65
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66 #define AV_COPY128 AV_COPY128
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67 static av_always_inline void AV_COPY128(void *d, const void *s)
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68 {
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69 struct v {uint64_t v[2];};
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70
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71 __asm__("movaps %1, %%xmm0 \n\t"
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72 "movaps %%xmm0, %0 \n\t"
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73 : "=m"(*(struct v*)d)
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74 : "m" (*(const struct v*)s)
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75 : "xmm0");
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76 }
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77
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78 #endif /* __SSE__ */
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79
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80 #ifdef __SSE2__
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81
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82 #define AV_ZERO128 AV_ZERO128
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83 static av_always_inline void AV_ZERO128(void *d)
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84 {
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85 struct v {uint64_t v[2];};
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86
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87 __asm__("pxor %%xmm0, %%xmm0 \n\t"
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88 "movdqa %%xmm0, %0 \n\t"
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89 : "=m"(*(struct v*)d)
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90 :: "xmm0");
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91 }
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92
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93 #endif /* __SSE2__ */
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94
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95 #endif /* HAVE_MMX */
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96
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97 #endif /* AVUTIL_X86_INTREADWRITE_H */
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