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  1. /*
  2.  * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  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.
  10.  *
  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.
  15.  *
  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
  19.  */
  20.  
  21. #ifndef AVCODEC_MIPS_MATHOPS_H
  22. #define AVCODEC_MIPS_MATHOPS_H
  23.  
  24. #include <stdint.h>
  25. #include "config.h"
  26. #include "libavutil/common.h"
  27.  
  28. #if HAVE_INLINE_ASM
  29.  
  30. #if HAVE_LOONGSON
  31.  
  32. static inline av_const int64_t MAC64(int64_t d, int a, int b)
  33. {
  34.     int64_t m;
  35.     __asm__ ("dmult.g %1, %2, %3 \n\t"
  36.              "daddu   %0, %0, %1 \n\t"
  37.              : "+r"(d), "=&r"(m) : "r"(a), "r"(b));
  38.     return d;
  39. }
  40. #define MAC64(d, a, b) ((d) = MAC64(d, a, b))
  41.  
  42. static inline av_const int64_t MLS64(int64_t d, int a, int b)
  43. {
  44.     int64_t m;
  45.     __asm__ ("dmult.g %1, %2, %3 \n\t"
  46.              "dsubu   %0, %0, %1 \n\t"
  47.              : "+r"(d), "=&r"(m) : "r"(a), "r"(b));
  48.     return d;
  49. }
  50. #define MLS64(d, a, b) ((d) = MLS64(d, a, b))
  51.  
  52. #elif ARCH_MIPS64
  53.  
  54. static inline av_const int64_t MAC64(int64_t d, int a, int b)
  55. {
  56.     int64_t m;
  57.     __asm__ ("dmult %2, %3     \n\t"
  58.              "mflo  %1         \n\t"
  59.              "daddu %0, %0, %1 \n\t"
  60.              : "+r"(d), "=&r"(m) : "r"(a), "r"(b)
  61.              : "hi", "lo");
  62.     return d;
  63. }
  64. #define MAC64(d, a, b) ((d) = MAC64(d, a, b))
  65.  
  66. static inline av_const int64_t MLS64(int64_t d, int a, int b)
  67. {
  68.     int64_t m;
  69.     __asm__ ("dmult %2, %3     \n\t"
  70.              "mflo  %1         \n\t"
  71.              "dsubu %0, %0, %1 \n\t"
  72.              : "+r"(d), "=&r"(m) : "r"(a), "r"(b)
  73.              : "hi", "lo");
  74.     return d;
  75. }
  76. #define MLS64(d, a, b) ((d) = MLS64(d, a, b))
  77.  
  78. #endif
  79.  
  80. #endif /* HAVE_INLINE_ASM */
  81.  
  82. #endif /* AVCODEC_MIPS_MATHOPS_H */
  83.