media/libopus/celt/mips/fixed_generic_mipsr1.h

   1 /* Copyright (C) 2007-2009 Xiph.Org Foundation
   2    Copyright (C) 2003-2008 Jean-Marc Valin
   3    Copyright (C) 2007-2008 CSIRO */
   4 /**
   5    @file fixed_generic.h
   6    @brief Generic fixed-point operations
   7 */
   8 /*
   9    Redistribution and use in source and binary forms, with or without
  10    modification, are permitted provided that the following conditions
  11    are met:
  12
  13    - Redistributions of source code must retain the above copyright
  14    notice, this list of conditions and the following disclaimer.
  15
  16    - Redistributions in binary form must reproduce the above copyright
  17    notice, this list of conditions and the following disclaimer in the
  18    documentation and/or other materials provided with the distribution.
  19
  20    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  24    OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  25    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  26    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  27    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  28    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  29    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  30    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31 */
  32
  33 #ifndef CELT_FIXED_GENERIC_MIPSR1_H
  34 #define CELT_FIXED_GENERIC_MIPSR1_H
  35
  36 #undef MULT16_32_Q15_ADD
  37 static inline int MULT16_32_Q15_ADD(int a, int b, int c, int d) {
  38     int m;
  39     asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a), "r" ((int)b));
  40     asm volatile("madd $ac1, %0, %1" : : "r" ((int)c), "r" ((int)d));
  41     asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m): "i" (15));
  42     return m;
  43 }
  44
  45 #undef MULT16_32_Q15_SUB
  46 static inline int MULT16_32_Q15_SUB(int a, int b, int c, int d) {
  47     int m;
  48     asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a), "r" ((int)b));
  49     asm volatile("msub $ac1, %0, %1" : : "r" ((int)c), "r" ((int)d));
  50     asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m): "i" (15));
  51     return m;
  52 }
  53
  54 #undef MULT16_16_Q15_ADD
  55 static inline int MULT16_16_Q15_ADD(int a, int b, int c, int d) {
  56     int m;
  57     asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a), "r" ((int)b));
  58     asm volatile("madd $ac1, %0, %1" : : "r" ((int)c), "r" ((int)d));
  59     asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m): "i" (15));
  60     return m;
  61 }
  62
  63 #undef MULT16_16_Q15_SUB
  64 static inline int MULT16_16_Q15_SUB(int a, int b, int c, int d) {
  65     int m;
  66     asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a), "r" ((int)b));
  67     asm volatile("msub $ac1, %0, %1" : : "r" ((int)c), "r" ((int)d));
  68     asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m): "i" (15));
  69     return m;
  70 }
  71
  72
  73 #undef MULT16_32_Q16
  74 static inline int MULT16_32_Q16(int a, int b)
  75 {
  76     int c;
  77     asm volatile("MULT $ac1,%0, %1" : : "r" (a), "r" (b));
  78     asm volatile("EXTR.W %0,$ac1, %1" : "=r" (c): "i" (16));
  79     return c;
  80 }
  81
  82 #undef MULT16_32_P16
  83 static inline int MULT16_32_P16(int a, int b)
  84 {
  85     int c;
  86     asm volatile("MULT $ac1, %0, %1" : : "r" (a), "r" (b));
  87     asm volatile("EXTR_R.W %0,$ac1, %1" : "=r" (c): "i" (16));
  88     return c;
  89 }
  90
  91 #undef MULT16_32_Q15
  92 static inline int MULT16_32_Q15(int a, int b)
  93 {
  94     int c;
  95     asm volatile("MULT $ac1, %0, %1" : : "r" (a), "r" (b));
  96     asm volatile("EXTR.W %0,$ac1, %1" : "=r" (c): "i" (15));
  97     return c;
  98 }
  99
 100 #undef MULT32_32_Q31
 101 static inline int MULT32_32_Q31(int a, int b)
 102 {
 103     int r;
 104     asm volatile("MULT $ac1, %0, %1" : : "r" (a), "r" (b));
 105     asm volatile("EXTR.W %0,$ac1, %1" : "=r" (r): "i" (31));
 106     return r;
 107 }
 108
 109 #undef PSHR32
 110 static inline int PSHR32(int a, int shift)
 111 {
 112     int r;
 113     asm volatile ("SHRAV_R.W %0, %1, %2" :"=r" (r): "r" (a), "r" (shift));
 114     return r;
 115 }
 116
 117 #undef MULT16_16_P15
 118 static inline int MULT16_16_P15(int a, int b)
 119 {
 120     int r;
 121     asm volatile ("mul %0, %1, %2" :"=r" (r): "r" (a), "r" (b));
 122     asm volatile ("SHRA_R.W %0, %1, %2" : "+r" (r):  "0" (r), "i"(15));
 123     return r;
 124 }
 125
 126 #endif /* CELT_FIXED_GENERIC_MIPSR1_H */