Libav
mathops.h
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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 */
#define av_const
Definition: attributes.h:60
#define MLS64(d, a, b)
Definition: mathops.h:80
#define b
Definition: input.c:52
common internal and external API header
#define MAC64(d, a, b)
Definition: mathops.h:76