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 30static 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 */ 47