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#define AV_RN32 AV_RN32 28static av_always_inline uint32_t AV_RN32(const void *p) 29{ 30 uint32_t v; 31 __asm__ ("lwl %0, %1 \n\t" 32 "lwr %0, %2 \n\t" 33 : "=&r"(v) 34 : "m"(*(const uint32_t *)((const uint8_t *)p+3*!HAVE_BIGENDIAN)), 35 "m"(*(const uint32_t *)((const uint8_t *)p+3*HAVE_BIGENDIAN))); 36 return v; 37} 38 39#define AV_WN32 AV_WN32 40static av_always_inline void AV_WN32(void *p, uint32_t v) 41{ 42 __asm__ ("swl %2, %0 \n\t" 43 "swr %2, %1 \n\t" 44 : "=m"(*(uint32_t *)((uint8_t *)p+3*!HAVE_BIGENDIAN)), 45 "=m"(*(uint32_t *)((uint8_t *)p+3*HAVE_BIGENDIAN)) 46 : "r"(v)); 47} 48 49#if ARCH_MIPS64 50 51#define AV_RN64 AV_RN64 52static av_always_inline uint64_t AV_RN64(const void *p) 53{ 54 uint64_t v; 55 __asm__ ("ldl %0, %1 \n\t" 56 "ldr %0, %2 \n\t" 57 : "=&r"(v) 58 : "m"(*(const uint64_t *)((const uint8_t *)p+7*!HAVE_BIGENDIAN)), 59 "m"(*(const uint64_t *)((const uint8_t *)p+7*HAVE_BIGENDIAN))); 60 return v; 61} 62 63#define AV_WN64 AV_WN64 64static av_always_inline void AV_WN64(void *p, uint64_t v) 65{ 66 __asm__ ("sdl %2, %0 \n\t" 67 "sdr %2, %1 \n\t" 68 : "=m"(*(uint64_t *)((uint8_t *)p+7*!HAVE_BIGENDIAN)), 69 "=m"(*(uint64_t *)((uint8_t *)p+7*HAVE_BIGENDIAN)) 70 : "r"(v)); 71} 72 73#else 74 75#define AV_RN64 AV_RN64 76static av_always_inline uint64_t AV_RN64(const void *p) 77{ 78 union { uint64_t v; uint32_t hl[2]; } v; 79 v.hl[0] = AV_RN32(p); 80 v.hl[1] = AV_RN32((const uint8_t *)p + 4); 81 return v.v; 82} 83 84#define AV_WN64 AV_WN64 85static av_always_inline void AV_WN64(void *p, uint64_t v) 86{ 87 union { uint64_t v; uint32_t hl[2]; } vv = { v }; 88 AV_WN32(p, vv.hl[0]); 89 AV_WN32((uint8_t *)p + 4, vv.hl[1]); 90} 91 92#endif /* ARCH_MIPS64 */ 93 94#endif /* AVUTIL_MIPS_INTREADWRITE_H */ 95