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