mathops: mips: Correctly enable loongson-specific assembly
[libav.git] / libavcodec / mips / mathops.h
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 */