/* * Copyright (c) 2008 Mans Rullgard <mans@mansr.com> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVUTIL_PPC_INTREADWRITE_H #define AVUTIL_PPC_INTREADWRITE_H #include <stdint.h> #include "config.h" #if HAVE_XFORM_ASM #define AV_RL16 AV_RL16 static av_always_inline uint16_t AV_RL16(const void *p) { uint16_t v; __asm__ ("lhbrx %0, %y1" : "=r"(v) : "Z"(*(const uint16_t*)p)); return v; } #define AV_WL16 AV_WL16 static av_always_inline void AV_WL16(void *p, uint16_t v) { __asm__ ("sthbrx %1, %y0" : "=Z"(*(uint16_t*)p) : "r"(v)); } #define AV_RL32 AV_RL32 static av_always_inline uint32_t AV_RL32(const void *p) { uint32_t v; __asm__ ("lwbrx %0, %y1" : "=r"(v) : "Z"(*(const uint32_t*)p)); return v; } #define AV_WL32 AV_WL32 static av_always_inline void AV_WL32(void *p, uint32_t v) { __asm__ ("stwbrx %1, %y0" : "=Z"(*(uint32_t*)p) : "r"(v)); } #if HAVE_LDBRX #define AV_RL64 AV_RL64 static av_always_inline uint64_t AV_RL64(const void *p) { uint64_t v; __asm__ ("ldbrx %0, %y1" : "=r"(v) : "Z"(*(const uint64_t*)p)); return v; } #define AV_WL64 AV_WL64 static av_always_inline void AV_WL64(void *p, uint64_t v) { __asm__ ("stdbrx %1, %y0" : "=Z"(*(uint64_t*)p) : "r"(v)); } #else #define AV_RL64 AV_RL64 static av_always_inline uint64_t AV_RL64(const void *p) { union { uint64_t v; uint32_t hl[2]; } v; __asm__ ("lwbrx %0, %y2 \n\t" "lwbrx %1, %y3 \n\t" : "=&r"(v.hl[1]), "=r"(v.hl[0]) : "Z"(*(const uint32_t*)p), "Z"(*((const uint32_t*)p+1))); return v.v; } #define AV_WL64 AV_WL64 static av_always_inline void AV_WL64(void *p, uint64_t v) { union { uint64_t v; uint32_t hl[2]; } vv = { v }; __asm__ ("stwbrx %2, %y0 \n\t" "stwbrx %3, %y1 \n\t" : "=Z"(*(uint32_t*)p), "=Z"(*((uint32_t*)p+1)) : "r"(vv.hl[1]), "r"(vv.hl[0])); } #endif /* HAVE_LDBRX */ #endif /* HAVE_XFORM_ASM */ /* * GCC fails miserably on the packed struct version which is used by * default, so we override it here. */ #define AV_RB64(p) (*(const uint64_t *)(p)) #define AV_WB64(p, v) (*(uint64_t *)(p) = (v)) #endif /* AVUTIL_PPC_INTREADWRITE_H */