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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 AVUTIL_MIPS_INTREADWRITE_H | |
22 | #define AVUTIL_MIPS_INTREADWRITE_H | |
23 | ||
24 | #include <stdint.h> | |
25 | #include "config.h" | |
26 | ||
27 | #if ARCH_MIPS64 && HAVE_INLINE_ASM | |
28 | ||
29 | #define AV_RN32 AV_RN32 | |
30 | static av_always_inline uint32_t AV_RN32(const void *p) | |
31 | { | |
32 | struct __attribute__((packed)) u32 { uint32_t v; }; | |
33 | const uint8_t *q = p; | |
34 | const struct u32 *pl = (const struct u32 *)(q + 3 * !HAVE_BIGENDIAN); | |
35 | const struct u32 *pr = (const struct u32 *)(q + 3 * HAVE_BIGENDIAN); | |
36 | uint32_t v; | |
37 | __asm__ ("lwl %0, %1 \n\t" | |
38 | "lwr %0, %2 \n\t" | |
39 | : "=&r"(v) | |
40 | : "m"(*pl), "m"(*pr)); | |
41 | return v; | |
42 | } | |
43 | ||
44 | #endif /* ARCH_MIPS64 && HAVE_INLINE_ASM */ | |
45 | ||
46 | #endif /* AVUTIL_MIPS_INTREADWRITE_H */ |