00001 /* 00002 * Copyright (c) 2009 Mans Rullgard <mans@mansr.com> 00003 * 00004 * This file is part of FFmpeg. 00005 * 00006 * FFmpeg is free software; you can redistribute it and/or 00007 * modify it under the terms of the GNU Lesser General Public 00008 * License as published by the Free Software Foundation; either 00009 * version 2.1 of the License, or (at your option) any later version. 00010 * 00011 * FFmpeg is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 * Lesser General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU Lesser General Public 00017 * License along with FFmpeg; if not, write to the Free Software 00018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00019 */ 00020 00021 #ifndef AVUTIL_MIPS_INTREADWRITE_H 00022 #define AVUTIL_MIPS_INTREADWRITE_H 00023 00024 #include <stdint.h> 00025 #include "config.h" 00026 00027 #if ARCH_MIPS64 && HAVE_INLINE_ASM 00028 00029 #define AV_RN32 AV_RN32 00030 static av_always_inline uint32_t AV_RN32(const void *p) 00031 { 00032 struct __attribute__((packed)) u32 { uint32_t v; }; 00033 const uint8_t *q = p; 00034 const struct u32 *pl = (const struct u32 *)(q + 3 * !HAVE_BIGENDIAN); 00035 const struct u32 *pr = (const struct u32 *)(q + 3 * HAVE_BIGENDIAN); 00036 uint32_t v; 00037 __asm__ ("lwl %0, %1 \n\t" 00038 "lwr %0, %2 \n\t" 00039 : "=&r"(v) 00040 : "m"(*pl), "m"(*pr)); 00041 return v; 00042 } 00043 00044 #endif /* ARCH_MIPS64 && HAVE_INLINE_ASM */ 00045 00046 #endif /* AVUTIL_MIPS_INTREADWRITE_H */
1.5.8