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 AVUTIL_MIPS_INTREADWRITE_H
22#define AVUTIL_MIPS_INTREADWRITE_H
23
24#include <stdint.h>
25#include "config.h"
26
27#define AV_RN32 AV_RN32
28static av_always_inline uint32_t AV_RN32(const void *p)
29{
30    uint32_t v;
31    __asm__ ("lwl %0, %1  \n\t"
32             "lwr %0, %2  \n\t"
33             : "=&r"(v)
34             : "m"(*(const uint32_t *)((const uint8_t *)p+3*!HAVE_BIGENDIAN)),
35               "m"(*(const uint32_t *)((const uint8_t *)p+3*HAVE_BIGENDIAN)));
36    return v;
37}
38
39#define AV_WN32 AV_WN32
40static av_always_inline void AV_WN32(void *p, uint32_t v)
41{
42    __asm__ ("swl %2, %0  \n\t"
43             "swr %2, %1  \n\t"
44             : "=m"(*(uint32_t *)((uint8_t *)p+3*!HAVE_BIGENDIAN)),
45               "=m"(*(uint32_t *)((uint8_t *)p+3*HAVE_BIGENDIAN))
46             : "r"(v));
47}
48
49#if ARCH_MIPS64
50
51#define AV_RN64 AV_RN64
52static av_always_inline uint64_t AV_RN64(const void *p)
53{
54    uint64_t v;
55    __asm__ ("ldl %0, %1  \n\t"
56             "ldr %0, %2  \n\t"
57             : "=&r"(v)
58             : "m"(*(const uint64_t *)((const uint8_t *)p+7*!HAVE_BIGENDIAN)),
59               "m"(*(const uint64_t *)((const uint8_t *)p+7*HAVE_BIGENDIAN)));
60    return v;
61}
62
63#define AV_WN64 AV_WN64
64static av_always_inline void AV_WN64(void *p, uint64_t v)
65{
66    __asm__ ("sdl %2, %0  \n\t"
67             "sdr %2, %1  \n\t"
68             : "=m"(*(uint64_t *)((uint8_t *)p+7*!HAVE_BIGENDIAN)),
69               "=m"(*(uint64_t *)((uint8_t *)p+7*HAVE_BIGENDIAN))
70             : "r"(v));
71}
72
73#else
74
75#define AV_RN64 AV_RN64
76static av_always_inline uint64_t AV_RN64(const void *p)
77{
78    union { uint64_t v; uint32_t hl[2]; } v;
79    v.hl[0] = AV_RN32(p);
80    v.hl[1] = AV_RN32((const uint8_t *)p + 4);
81    return v.v;
82}
83
84#define AV_WN64 AV_WN64
85static av_always_inline void AV_WN64(void *p, uint64_t v)
86{
87    union { uint64_t v; uint32_t hl[2]; } vv = { v };
88    AV_WN32(p, vv.hl[0]);
89    AV_WN32((uint8_t *)p + 4, vv.hl[1]);
90}
91
92#endif /* ARCH_MIPS64 */
93
94#endif /* AVUTIL_MIPS_INTREADWRITE_H */
95