600 lines
17 KiB
C
600 lines
17 KiB
C
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/*
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* Copyright (c) 2015-2016, Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef _BLE_MESH_BYTEORDER_H_
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#define _BLE_MESH_BYTEORDER_H_
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#include "mesh_types.h"
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#include "mesh_trace.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Internal helpers only used by the sys_* APIs further below */
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#ifndef __bswap_16
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#define __bswap_16(x) ((u16_t) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)))
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#endif
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#ifndef __bswap_24
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#define __bswap_24(x) ((u32_t) ((((x) >> 16) & 0xff) | \
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(((x)) & 0xff00) | \
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(((x) & 0xff) << 16)))
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#endif
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#ifndef __bswap_32
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#define __bswap_32(x) ((u32_t) ((((x) >> 24) & 0xff) | \
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(((x) >> 8) & 0xff00) | \
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(((x) & 0xff00) << 8) | \
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(((x) & 0xff) << 24)))
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#endif
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#ifndef __bswap_48
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#define __bswap_48(x) ((u64_t) ((((x) >> 40) & 0xff) | \
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(((x) >> 24) & 0xff00) | \
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(((x) >> 8) & 0xff0000) | \
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(((x) & 0xff0000) << 8) | \
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(((x) & 0xff00) << 24) | \
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(((x) & 0xff) << 40)))
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#endif
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#ifndef __bswap_64
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#define __bswap_64(x) ((u64_t) ((((x) >> 56) & 0xff) | \
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(((x) >> 40) & 0xff00) | \
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(((x) >> 24) & 0xff0000) | \
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(((x) >> 8) & 0xff000000) | \
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(((x) & 0xff000000) << 8) | \
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(((x) & 0xff0000) << 24) | \
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(((x) & 0xff00) << 40) | \
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(((x) & 0xff) << 56)))
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#endif
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/** @def sys_le16_to_cpu
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* @brief Convert 16-bit integer from little-endian to host endianness.
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*
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* @param val 16-bit integer in little-endian format.
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*
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* @return 16-bit integer in host endianness.
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*/
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/** @def sys_cpu_to_le16
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* @brief Convert 16-bit integer from host endianness to little-endian.
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*
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* @param val 16-bit integer in host endianness.
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*
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* @return 16-bit integer in little-endian format.
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*/
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/** @def sys_le24_to_cpu
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* @brief Convert 24-bit integer from little-endian to host endianness.
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*
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* @param val 24-bit integer in little-endian format.
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*
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* @return 24-bit integer in host endianness.
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*/
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/** @def sys_cpu_to_le24
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* @brief Convert 24-bit integer from host endianness to little-endian.
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*
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* @param val 24-bit integer in host endianness.
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*
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* @return 24-bit integer in little-endian format.
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*/
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/** @def sys_le32_to_cpu
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* @brief Convert 32-bit integer from little-endian to host endianness.
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*
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* @param val 32-bit integer in little-endian format.
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*
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* @return 32-bit integer in host endianness.
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*/
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/** @def sys_cpu_to_le32
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* @brief Convert 32-bit integer from host endianness to little-endian.
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*
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* @param val 32-bit integer in host endianness.
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*
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* @return 32-bit integer in little-endian format.
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*/
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/** @def sys_le48_to_cpu
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* @brief Convert 48-bit integer from little-endian to host endianness.
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*
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* @param val 48-bit integer in little-endian format.
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*
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* @return 48-bit integer in host endianness.
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*/
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/** @def sys_cpu_to_le48
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* @brief Convert 48-bit integer from host endianness to little-endian.
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*
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* @param val 48-bit integer in host endianness.
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*
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* @return 48-bit integer in little-endian format.
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*/
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/** @def sys_be16_to_cpu
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* @brief Convert 16-bit integer from big-endian to host endianness.
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*
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* @param val 16-bit integer in big-endian format.
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*
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* @return 16-bit integer in host endianness.
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*/
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/** @def sys_cpu_to_be16
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* @brief Convert 16-bit integer from host endianness to big-endian.
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*
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* @param val 16-bit integer in host endianness.
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*
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* @return 16-bit integer in big-endian format.
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*/
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/** @def sys_be24_to_cpu
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* @brief Convert 24-bit integer from big-endian to host endianness.
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*
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* @param val 24-bit integer in big-endian format.
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*
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* @return 24-bit integer in host endianness.
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*/
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/** @def sys_cpu_to_be24
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* @brief Convert 24-bit integer from host endianness to big-endian.
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*
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* @param val 24-bit integer in host endianness.
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*
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* @return 24-bit integer in big-endian format.
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*/
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/** @def sys_be32_to_cpu
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* @brief Convert 32-bit integer from big-endian to host endianness.
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*
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* @param val 32-bit integer in big-endian format.
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*
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* @return 32-bit integer in host endianness.
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*/
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/** @def sys_cpu_to_be32
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* @brief Convert 32-bit integer from host endianness to big-endian.
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*
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* @param val 32-bit integer in host endianness.
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*
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* @return 32-bit integer in big-endian format.
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*/
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/** @def sys_be48_to_cpu
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* @brief Convert 48-bit integer from big-endian to host endianness.
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*
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* @param val 48-bit integer in big-endian format.
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*
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* @return 48-bit integer in host endianness.
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*/
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/** @def sys_cpu_to_be48
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* @brief Convert 48-bit integer from host endianness to big-endian.
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*
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* @param val 48-bit integer in host endianness.
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*
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* @return 48-bit integer in big-endian format.
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*/
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#ifndef sys_le16_to_cpu
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#define sys_le16_to_cpu(val) (val)
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#endif
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#ifndef sys_cpu_to_le16
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#define sys_cpu_to_le16(val) (val)
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#endif
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#ifndef sys_le24_to_cpu
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#define sys_le24_to_cpu(val) (val)
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#endif
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#ifndef sys_cpu_to_le24
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#define sys_cpu_to_le24(val) (val)
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#endif
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#ifndef sys_le32_to_cpu
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#define sys_le32_to_cpu(val) (val)
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#endif
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#ifndef sys_cpu_to_le32
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#define sys_cpu_to_le32(val) (val)
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#endif
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#ifndef sys_le48_to_cpu
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#define sys_le48_to_cpu(val) (val)
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#endif
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#ifndef sys_cpu_to_le48
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#define sys_cpu_to_le48(val) (val)
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#endif
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#ifndef sys_le64_to_cpu
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#define sys_le64_to_cpu(val) (val)
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#endif
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#ifndef sys_cpu_to_le64
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#define sys_cpu_to_le64(val) (val)
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#endif
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#ifndef sys_be16_to_cpu
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#define sys_be16_to_cpu(val) __bswap_16(val)
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#endif
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#ifndef sys_cpu_to_be16
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#define sys_cpu_to_be16(val) __bswap_16(val)
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#endif
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#ifndef sys_be24_to_cpu
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#define sys_be24_to_cpu(val) __bswap_24(val)
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#endif
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#ifndef sys_cpu_to_be24
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#define sys_cpu_to_be24(val) __bswap_24(val)
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#endif
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#ifndef sys_be32_to_cpu
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#define sys_be32_to_cpu(val) __bswap_32(val)
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#endif
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#ifndef sys_cpu_to_be32
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#define sys_cpu_to_be32(val) __bswap_32(val)
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#endif
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#ifndef sys_be48_to_cpu
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#define sys_be48_to_cpu(val) __bswap_48(val)
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#endif
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#ifndef sys_cpu_to_be48
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#define sys_cpu_to_be48(val) __bswap_48(val)
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#endif
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#ifndef sys_be64_to_cpu
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#define sys_be64_to_cpu(val) __bswap_64(val)
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#endif
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#ifndef sys_cpu_to_be64
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#define sys_cpu_to_be64(val) __bswap_64(val)
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#endif
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/**
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* @brief Put a 16-bit integer as big-endian to arbitrary location.
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*
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* Put a 16-bit integer, originally in host endianness, to a
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* potentially unaligned memory location in big-endian format.
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*
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* @param val 16-bit integer in host endianness.
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* @param dst Destination memory address to store the result.
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*/
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static inline void sys_put_be16(u16_t val, u8_t dst[2])
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{
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dst[0] = val >> 8;
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dst[1] = val;
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}
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/**
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* @brief Put a 24-bit integer as big-endian to arbitrary location.
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*
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* Put a 24-bit integer, originally in host endianness, to a
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* potentially unaligned memory location in big-endian format.
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*
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* @param val 24-bit integer in host endianness.
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* @param dst Destination memory address to store the result.
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*/
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static inline void sys_put_be24(u32_t val, u8_t dst[3])
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{
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dst[0] = val >> 16;
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sys_put_be16(val, &dst[1]);
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}
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/**
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* @brief Put a 32-bit integer as big-endian to arbitrary location.
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*
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* Put a 32-bit integer, originally in host endianness, to a
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* potentially unaligned memory location in big-endian format.
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*
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* @param val 32-bit integer in host endianness.
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* @param dst Destination memory address to store the result.
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*/
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static inline void sys_put_be32(u32_t val, u8_t dst[4])
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{
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sys_put_be16(val >> 16, dst);
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sys_put_be16(val, &dst[2]);
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}
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/**
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* @brief Put a 48-bit integer as big-endian to arbitrary location.
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*
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* Put a 48-bit integer, originally in host endianness, to a
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* potentially unaligned memory location in big-endian format.
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*
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* @param val 48-bit integer in host endianness.
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* @param dst Destination memory address to store the result.
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*/
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static inline void sys_put_be48(u64_t val, u8_t dst[6])
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{
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sys_put_be16(val >> 32, dst);
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sys_put_be32(val, &dst[2]);
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}
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/**
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* @brief Put a 64-bit integer as big-endian to arbitrary location.
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*
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* Put a 64-bit integer, originally in host endianness, to a
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* potentially unaligned memory location in big-endian format.
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*
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* @param val 64-bit integer in host endianness.
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* @param dst Destination memory address to store the result.
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*/
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static inline void sys_put_be64(u64_t val, u8_t dst[8])
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{
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sys_put_be32(val >> 32, dst);
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sys_put_be32(val, &dst[4]);
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}
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/**
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* @brief Put a 16-bit integer as little-endian to arbitrary location.
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*
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* Put a 16-bit integer, originally in host endianness, to a
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* potentially unaligned memory location in little-endian format.
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*
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* @param val 16-bit integer in host endianness.
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* @param dst Destination memory address to store the result.
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*/
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static inline void sys_put_le16(u16_t val, u8_t dst[2])
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{
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dst[0] = val;
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dst[1] = val >> 8;
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}
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/**
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* @brief Put a 24-bit integer as little-endian to arbitrary location.
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*
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* Put a 24-bit integer, originally in host endianness, to a
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* potentially unaligned memory location in littel-endian format.
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*
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* @param val 24-bit integer in host endianness.
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* @param dst Destination memory address to store the result.
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*/
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static inline void sys_put_le24(u32_t val, u8_t dst[3])
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{
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sys_put_le16(val, dst);
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dst[2] = val >> 16;
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}
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/**
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* @brief Put a 32-bit integer as little-endian to arbitrary location.
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*
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* Put a 32-bit integer, originally in host endianness, to a
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* potentially unaligned memory location in little-endian format.
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*
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* @param val 32-bit integer in host endianness.
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* @param dst Destination memory address to store the result.
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*/
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static inline void sys_put_le32(u32_t val, u8_t dst[4])
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{
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sys_put_le16(val, dst);
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sys_put_le16(val >> 16, &dst[2]);
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}
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/**
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* @brief Put a 48-bit integer as little-endian to arbitrary location.
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*
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* Put a 48-bit integer, originally in host endianness, to a
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* potentially unaligned memory location in little-endian format.
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*
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* @param val 48-bit integer in host endianness.
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* @param dst Destination memory address to store the result.
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*/
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static inline void sys_put_le48(u64_t val, u8_t dst[6])
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{
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sys_put_le32(val, dst);
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sys_put_le16(val >> 32, &dst[4]);
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}
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/**
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* @brief Put a 64-bit integer as little-endian to arbitrary location.
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*
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* Put a 64-bit integer, originally in host endianness, to a
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* potentially unaligned memory location in little-endian format.
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*
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* @param val 64-bit integer in host endianness.
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* @param dst Destination memory address to store the result.
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*/
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static inline void sys_put_le64(u64_t val, u8_t dst[8])
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{
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sys_put_le32(val, dst);
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sys_put_le32(val >> 32, &dst[4]);
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}
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/**
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* @brief Get a 16-bit integer stored in big-endian format.
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*
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* Get a 16-bit integer, stored in big-endian format in a potentially
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* unaligned memory location, and convert it to the host endianness.
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*
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* @param src Location of the big-endian 16-bit integer to get.
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*
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* @return 16-bit integer in host endianness.
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*/
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static inline u16_t sys_get_be16(const u8_t src[2])
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{
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return ((u16_t)src[0] << 8) | src[1];
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}
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/**
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* @brief Get a 24-bit integer stored in big-endian format.
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*
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* Get a 24-bit integer, stored in big-endian format in a potentially
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* unaligned memory location, and convert it to the host endianness.
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*
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* @param src Location of the big-endian 24-bit integer to get.
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*
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* @return 24-bit integer in host endianness.
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*/
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static inline u32_t sys_get_be24(const u8_t src[3])
|
||
|
{
|
||
|
return ((u32_t)src[0] << 16) | sys_get_be16(&src[1]);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Get a 32-bit integer stored in big-endian format.
|
||
|
*
|
||
|
* Get a 32-bit integer, stored in big-endian format in a potentially
|
||
|
* unaligned memory location, and convert it to the host endianness.
|
||
|
*
|
||
|
* @param src Location of the big-endian 32-bit integer to get.
|
||
|
*
|
||
|
* @return 32-bit integer in host endianness.
|
||
|
*/
|
||
|
static inline u32_t sys_get_be32(const u8_t src[4])
|
||
|
{
|
||
|
return ((u32_t)sys_get_be16(&src[0]) << 16) | sys_get_be16(&src[2]);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Get a 48-bit integer stored in big-endian format.
|
||
|
*
|
||
|
* Get a 48-bit integer, stored in big-endian format in a potentially
|
||
|
* unaligned memory location, and convert it to the host endianness.
|
||
|
*
|
||
|
* @param src Location of the big-endian 48-bit integer to get.
|
||
|
*
|
||
|
* @return 48-bit integer in host endianness.
|
||
|
*/
|
||
|
static inline u64_t sys_get_be48(const u8_t src[6])
|
||
|
{
|
||
|
return ((u64_t)sys_get_be32(&src[0]) << 32) | sys_get_be16(&src[4]);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Get a 64-bit integer stored in big-endian format.
|
||
|
*
|
||
|
* Get a 64-bit integer, stored in big-endian format in a potentially
|
||
|
* unaligned memory location, and convert it to the host endianness.
|
||
|
*
|
||
|
* @param src Location of the big-endian 64-bit integer to get.
|
||
|
*
|
||
|
* @return 64-bit integer in host endianness.
|
||
|
*/
|
||
|
static inline u64_t sys_get_be64(const u8_t src[8])
|
||
|
{
|
||
|
return ((u64_t)sys_get_be32(&src[0]) << 32) | sys_get_be32(&src[4]);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Get a 16-bit integer stored in little-endian format.
|
||
|
*
|
||
|
* Get a 16-bit integer, stored in little-endian format in a potentially
|
||
|
* unaligned memory location, and convert it to the host endianness.
|
||
|
*
|
||
|
* @param src Location of the little-endian 16-bit integer to get.
|
||
|
*
|
||
|
* @return 16-bit integer in host endianness.
|
||
|
*/
|
||
|
static inline u16_t sys_get_le16(const u8_t src[2])
|
||
|
{
|
||
|
return ((u16_t)src[1] << 8) | src[0];
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Get a 24-bit integer stored in big-endian format.
|
||
|
*
|
||
|
* Get a 24-bit integer, stored in big-endian format in a potentially
|
||
|
* unaligned memory location, and convert it to the host endianness.
|
||
|
*
|
||
|
* @param src Location of the big-endian 24-bit integer to get.
|
||
|
*
|
||
|
* @return 24-bit integer in host endianness.
|
||
|
*/
|
||
|
static inline u32_t sys_get_le24(const u8_t src[3])
|
||
|
{
|
||
|
return ((u32_t)src[2] << 16) | sys_get_le16(&src[0]);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Get a 32-bit integer stored in little-endian format.
|
||
|
*
|
||
|
* Get a 32-bit integer, stored in little-endian format in a potentially
|
||
|
* unaligned memory location, and convert it to the host endianness.
|
||
|
*
|
||
|
* @param src Location of the little-endian 32-bit integer to get.
|
||
|
*
|
||
|
* @return 32-bit integer in host endianness.
|
||
|
*/
|
||
|
static inline u32_t sys_get_le32(const u8_t src[4])
|
||
|
{
|
||
|
return ((u32_t)sys_get_le16(&src[2]) << 16) | sys_get_le16(&src[0]);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Get a 48-bit integer stored in little-endian format.
|
||
|
*
|
||
|
* Get a 48-bit integer, stored in little-endian format in a potentially
|
||
|
* unaligned memory location, and convert it to the host endianness.
|
||
|
*
|
||
|
* @param src Location of the little-endian 48-bit integer to get.
|
||
|
*
|
||
|
* @return 48-bit integer in host endianness.
|
||
|
*/
|
||
|
static inline u64_t sys_get_le48(const u8_t src[6])
|
||
|
{
|
||
|
return ((u64_t)sys_get_le32(&src[2]) << 32) | sys_get_le16(&src[0]);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Get a 64-bit integer stored in little-endian format.
|
||
|
*
|
||
|
* Get a 64-bit integer, stored in little-endian format in a potentially
|
||
|
* unaligned memory location, and convert it to the host endianness.
|
||
|
*
|
||
|
* @param src Location of the little-endian 64-bit integer to get.
|
||
|
*
|
||
|
* @return 64-bit integer in host endianness.
|
||
|
*/
|
||
|
static inline u64_t sys_get_le64(const u8_t src[8])
|
||
|
{
|
||
|
return ((u64_t)sys_get_le32(&src[4]) << 32) | sys_get_le32(&src[0]);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Swap one buffer content into another
|
||
|
*
|
||
|
* Copy the content of src buffer into dst buffer in reversed order,
|
||
|
* i.e.: src[n] will be put in dst[end-n]
|
||
|
* Where n is an index and 'end' the last index in both arrays.
|
||
|
* The 2 memory pointers must be pointing to different areas, and have
|
||
|
* a minimum size of given length.
|
||
|
*
|
||
|
* @param dst A valid pointer on a memory area where to copy the data in
|
||
|
* @param src A valid pointer on a memory area where to copy the data from
|
||
|
* @param length Size of both dst and src memory areas
|
||
|
*/
|
||
|
static inline void sys_memcpy_swap(void *dst, const void *src, size_t length)
|
||
|
{
|
||
|
u8_t *pdst = (u8_t *)dst;
|
||
|
const u8_t *psrc = (const u8_t *)src;
|
||
|
|
||
|
__ASSERT(((psrc < pdst && (psrc + length) <= pdst) ||
|
||
|
(psrc > pdst && (pdst + length) <= psrc)),
|
||
|
"Source and destination buffers must not overlap");
|
||
|
|
||
|
psrc += length - 1;
|
||
|
|
||
|
for (; length > 0; length--) {
|
||
|
*pdst++ = *psrc--;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @brief Swap buffer content
|
||
|
*
|
||
|
* In-place memory swap, where final content will be reversed.
|
||
|
* I.e.: buf[n] will be put in buf[end-n]
|
||
|
* Where n is an index and 'end' the last index of buf.
|
||
|
*
|
||
|
* @param buf A valid pointer on a memory area to swap
|
||
|
* @param length Size of buf memory area
|
||
|
*/
|
||
|
static inline void sys_mem_swap(void *buf, size_t length)
|
||
|
{
|
||
|
size_t i;
|
||
|
|
||
|
for (i = 0; i < (length / 2); i++) {
|
||
|
u8_t tmp = ((u8_t *)buf)[i];
|
||
|
|
||
|
((u8_t *)buf)[i] = ((u8_t *)buf)[length - 1 - i];
|
||
|
((u8_t *)buf)[length - 1 - i] = tmp;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
#ifdef __cplusplus
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
#endif /* _BLE_MESH_BYTEORDER_H_ */
|