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77 lines
2.1 KiB
77 lines
2.1 KiB
/* |
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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_ARM_INTREADWRITE_H |
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#define AVUTIL_ARM_INTREADWRITE_H |
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#include <stdint.h> |
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#include "config.h" |
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#if HAVE_FAST_UNALIGNED && HAVE_INLINE_ASM |
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#define AV_RN16 AV_RN16 |
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static av_always_inline unsigned AV_RN16(const void *p) |
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{ |
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unsigned v; |
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__asm__ ("ldrh %0, %1" : "=r"(v) : "m"(*(const uint16_t *)p)); |
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return v; |
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} |
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#define AV_WN16 AV_WN16 |
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static av_always_inline void AV_WN16(void *p, uint16_t v) |
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{ |
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__asm__ ("strh %1, %0" : "=m"(*(uint16_t *)p) : "r"(v)); |
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} |
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#define AV_RN32 AV_RN32 |
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static av_always_inline uint32_t AV_RN32(const void *p) |
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{ |
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uint32_t v; |
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__asm__ ("ldr %0, %1" : "=r"(v) : "m"(*(const uint32_t *)p)); |
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return v; |
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} |
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#define AV_WN32 AV_WN32 |
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static av_always_inline void AV_WN32(void *p, uint32_t v) |
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{ |
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__asm__ ("str %1, %0" : "=m"(*(uint32_t *)p) : "r"(v)); |
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} |
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#define AV_RN64 AV_RN64 |
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static av_always_inline uint64_t AV_RN64(const void *p) |
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{ |
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uint64_t v; |
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__asm__ ("ldr %Q0, %1 \n\t" |
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"ldr %R0, %2 \n\t" |
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: "=&r"(v) |
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: "m"(*(const uint32_t*)p), "m"(*((const uint32_t*)p+1))); |
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return v; |
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} |
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#define AV_WN64 AV_WN64 |
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static av_always_inline void AV_WN64(void *p, uint64_t v) |
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{ |
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__asm__ ("str %Q2, %0 \n\t" |
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"str %R2, %1 \n\t" |
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: "=m"(*(uint32_t*)p), "=m"(*((uint32_t*)p+1)) |
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: "r"(v)); |
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} |
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#endif /* HAVE_INLINE_ASM */ |
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#endif /* AVUTIL_ARM_INTREADWRITE_H */
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