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mathops.h
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1 /*
2  * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 
32 static inline av_const int64_t MAC64(int64_t d, int a, int b)
33 {
34  int64_t m;
35  __asm__ ("dmult.g %1, %2, %3 \n\t"
36  "daddu %0, %0, %1 \n\t"
37  : "+r"(d), "=&r"(m) : "r"(a), "r"(b));
38  return d;
39 }
40 #define MAC64(d, a, b) ((d) = MAC64(d, a, b))
41 
42 static inline av_const int64_t MLS64(int64_t d, int a, int b)
43 {
44  int64_t m;
45  __asm__ ("dmult.g %1, %2, %3 \n\t"
46  "dsubu %0, %0, %1 \n\t"
47  : "+r"(d), "=&r"(m) : "r"(a), "r"(b));
48  return d;
49 }
50 #define MLS64(d, a, b) ((d) = MLS64(d, a, b))
51 
52 #endif
53 
54 #endif /* HAVE_INLINE_ASM */
55 
56 #endif /* AVCODEC_MIPS_MATHOPS_H */