| 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 */ |