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
32static 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
42static 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#elif ARCH_MIPS64
53
54static inline av_const int64_t MAC64(int64_t d, int a, int b)
55{
56    int64_t m;
57    __asm__ ("dmult %2, %3     \n\t"
58             "mflo  %1         \n\t"
59             "daddu %0, %0, %1 \n\t"
60             : "+r"(d), "=&r"(m) : "r"(a), "r"(b)
61             : "hi", "lo");
62    return d;
63}
64#define MAC64(d, a, b) ((d) = MAC64(d, a, b))
65
66static inline av_const int64_t MLS64(int64_t d, int a, int b)
67{
68    int64_t m;
69    __asm__ ("dmult %2, %3     \n\t"
70             "mflo  %1         \n\t"
71             "dsubu %0, %0, %1 \n\t"
72             : "+r"(d), "=&r"(m) : "r"(a), "r"(b)
73             : "hi", "lo");
74    return d;
75}
76#define MLS64(d, a, b) ((d) = MLS64(d, a, b))
77
78#endif
79
80#endif /* HAVE_INLINE_ASM */
81
82#endif /* AVCODEC_MIPS_MATHOPS_H */
83