libavcodec/mips/mathops.h

   1 /*
   2  * Copyright (c) 2009 Mans Rullgard <mans@mansr.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 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 #if ARCH_MIPS64
  32
  33 static inline av_const int64_t MAC64(int64_t d, int a, int b)
  34 {
  35     int64_t m;
  36     __asm__ ("dmult %2, %3     \n\t"
  37              "mflo  %1         \n\t"
  38              "daddu %0, %0, %1 \n\t"
  39              : "+r"(d), "=&r"(m) : "r"(a), "r"(b)
  40              : "hi", "lo");
  41     return d;
  42 }
  43 #define MAC64(d, a, b) ((d) = MAC64(d, a, b))
  44
  45 static inline av_const int64_t MLS64(int64_t d, int a, int b)
  46 {
  47     int64_t m;
  48     __asm__ ("dmult %2, %3     \n\t"
  49              "mflo  %1         \n\t"
  50              "dsubu %0, %0, %1 \n\t"
  51              : "+r"(d), "=&r"(m) : "r"(a), "r"(b)
  52              : "hi", "lo");
  53     return d;
  54 }
  55 #define MLS64(d, a, b) ((d) = MLS64(d, a, b))
  56
  57 #else
  58
  59 static inline av_const int64_t MAC64(int64_t d, int a, int b)
  60 {
  61     int64_t m;
  62     __asm__ ("dmult.g %1, %2, %3 \n\t"
  63              "daddu   %0, %0, %1 \n\t"
  64              : "+r"(d), "=&r"(m) : "r"(a), "r"(b));
  65     return d;
  66 }
  67 #define MAC64(d, a, b) ((d) = MAC64(d, a, b))
  68
  69 static inline av_const int64_t MLS64(int64_t d, int a, int b)
  70 {
  71     int64_t m;
  72     __asm__ ("dmult.g %1, %2, %3 \n\t"
  73              "dsubu   %0, %0, %1 \n\t"
  74              : "+r"(d), "=&r"(m) : "r"(a), "r"(b));
  75     return d;
  76 }
  77 #define MLS64(d, a, b) ((d) = MLS64(d, a, b))
  78
  79 #endif
  80
  81 #endif /* HAVE_LOONGSON */
  82
  83 #endif /* HAVE_INLINE_ASM */
  84
  85 #endif /* AVCODEC_MIPS_MATHOPS_H */