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1 /***********************************************************************
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2 Copyright (c) 2006-2011, Skype Limited. All rights reserved.
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3 Redistribution and use in source and binary forms, with or without
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4 modification, are permitted provided that the following conditions
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5 are met:
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6 - Redistributions of source code must retain the above copyright notice,
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7 this list of conditions and the following disclaimer.
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8 - Redistributions in binary form must reproduce the above copyright
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9 notice, this list of conditions and the following disclaimer in the
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10 documentation and/or other materials provided with the distribution.
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11 - Neither the name of Internet Society, IETF or IETF Trust, nor the
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12 names of specific contributors, may be used to endorse or promote
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13 products derived from this software without specific prior written
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14 permission.
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15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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25 POSSIBILITY OF SUCH DAMAGE.
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26 ***********************************************************************/
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27
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28
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29 #ifndef __SILK_MACROS_MIPSR1_H__
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30 #define __SILK_MACROS_MIPSR1_H__
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31
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32 #define mips_clz(x) __builtin_clz(x)
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33
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34 #undef silk_SMULWB
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35 static inline int silk_SMULWB(int a, int b)
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36 {
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37 long long ac;
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38 int c;
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39
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40 ac = __builtin_mips_mult(a, (opus_int32)(opus_int16)b);
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41 c = __builtin_mips_extr_w(ac, 16);
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42
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43 return c;
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44 }
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45
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46 #undef silk_SMLAWB
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47 #define silk_SMLAWB(a32, b32, c32) ((a32) + silk_SMULWB(b32, c32))
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48
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49 #undef silk_SMULWW
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50 static inline int silk_SMULWW(int a, int b)
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51 {
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52 long long ac;
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53 int c;
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54
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55 ac = __builtin_mips_mult(a, b);
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56 c = __builtin_mips_extr_w(ac, 16);
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57
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58 return c;
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59 }
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60
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61 #undef silk_SMLAWW
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62 static inline int silk_SMLAWW(int a, int b, int c)
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63 {
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64 long long ac;
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65 int res;
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66
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67 ac = __builtin_mips_mult(b, c);
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68 res = __builtin_mips_extr_w(ac, 16);
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69 res += a;
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70
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71 return res;
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72 }
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73
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74 #define OVERRIDE_silk_CLZ16
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75 static inline opus_int32 silk_CLZ16(opus_int16 in16)
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76 {
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77 int re32;
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78 opus_int32 in32 = (opus_int32 )in16;
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79 re32 = mips_clz(in32);
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80 re32-=16;
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81 return re32;
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82 }
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83
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84 #define OVERRIDE_silk_CLZ32
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85 static inline opus_int32 silk_CLZ32(opus_int32 in32)
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86 {
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87 int re32;
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88 re32 = mips_clz(in32);
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89 return re32;
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90 }
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91
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92 #endif /* __SILK_MACROS_MIPSR1_H__ */
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