Libav
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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 #define AV_RN32 AV_RN32 00028 static av_always_inline uint32_t AV_RN32(const void *p) 00029 { 00030 uint32_t v; 00031 __asm__ ("lwl %0, %1 \n\t" 00032 "lwr %0, %2 \n\t" 00033 : "=&r"(v) 00034 : "m"(*(const uint32_t *)((const uint8_t *)p+3*!HAVE_BIGENDIAN)), 00035 "m"(*(const uint32_t *)((const uint8_t *)p+3*HAVE_BIGENDIAN))); 00036 return v; 00037 } 00038 00039 #define AV_WN32 AV_WN32 00040 static av_always_inline void AV_WN32(void *p, uint32_t v) 00041 { 00042 __asm__ ("swl %2, %0 \n\t" 00043 "swr %2, %1 \n\t" 00044 : "=m"(*(uint32_t *)((uint8_t *)p+3*!HAVE_BIGENDIAN)), 00045 "=m"(*(uint32_t *)((uint8_t *)p+3*HAVE_BIGENDIAN)) 00046 : "r"(v)); 00047 } 00048 00049 #if ARCH_MIPS64 00050 00051 #define AV_RN64 AV_RN64 00052 static av_always_inline uint64_t AV_RN64(const void *p) 00053 { 00054 uint64_t v; 00055 __asm__ ("ldl %0, %1 \n\t" 00056 "ldr %0, %2 \n\t" 00057 : "=&r"(v) 00058 : "m"(*(const uint64_t *)((const uint8_t *)p+7*!HAVE_BIGENDIAN)), 00059 "m"(*(const uint64_t *)((const uint8_t *)p+7*HAVE_BIGENDIAN))); 00060 return v; 00061 } 00062 00063 #define AV_WN64 AV_WN64 00064 static av_always_inline void AV_WN64(void *p, uint64_t v) 00065 { 00066 __asm__ ("sdl %2, %0 \n\t" 00067 "sdr %2, %1 \n\t" 00068 : "=m"(*(uint64_t *)((uint8_t *)p+7*!HAVE_BIGENDIAN)), 00069 "=m"(*(uint64_t *)((uint8_t *)p+7*HAVE_BIGENDIAN)) 00070 : "r"(v)); 00071 } 00072 00073 #else 00074 00075 #define AV_RN64 AV_RN64 00076 static av_always_inline uint64_t AV_RN64(const void *p) 00077 { 00078 union { uint64_t v; uint32_t hl[2]; } v; 00079 v.hl[0] = AV_RN32(p); 00080 v.hl[1] = AV_RN32((const uint8_t *)p + 4); 00081 return v.v; 00082 } 00083 00084 #define AV_WN64 AV_WN64 00085 static av_always_inline void AV_WN64(void *p, uint64_t v) 00086 { 00087 union { uint64_t v; uint32_t hl[2]; } vv = { v }; 00088 AV_WN32(p, vv.hl[0]); 00089 AV_WN32((uint8_t *)p + 4, vv.hl[1]); 00090 } 00091 00092 #endif /* ARCH_MIPS64 */ 00093 00094 #endif /* AVUTIL_MIPS_INTREADWRITE_H */