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
MULT16_32_Q15_ADD(int a,int b,int c,int d)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
MULT16_32_Q15_SUB(int a,int b,int c,int d)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
MULT16_16_Q15_ADD(int a,int b,int c,int d)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
MULT16_16_Q15_SUB(int a,int b,int c,int d)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
MULT16_32_Q16(int a,int b)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
MULT16_32_P16(int a,int b)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
MULT16_32_Q15(int a,int b)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
MULT32_32_Q31(int a,int b)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
PSHR32(int a,int shift)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
MULT16_16_P15(int a,int b)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 */
127