45cab335bc
This is the first step toward isolating standard C and POSIX headers into a single replaceable header file. Change-Id: I527297f5e7260b01103018ad3429922962ee9add Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
179 lines
4.4 KiB
C
179 lines
4.4 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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* Endian conversion functions
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*/
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#ifndef SPDK_ENDIAN_H
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#define SPDK_ENDIAN_H
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#include "spdk/stdinc.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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static inline uint16_t
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from_be16(const void *ptr)
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{
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const uint8_t *tmp = (const uint8_t *)ptr;
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return (((uint16_t)tmp[0] << 8) | tmp[1]);
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}
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static inline void
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to_be16(void *out, uint16_t in)
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{
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uint8_t *tmp = (uint8_t *)out;
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tmp[0] = (in >> 8) & 0xFF;
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tmp[1] = in & 0xFF;
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}
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static inline uint32_t
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from_be32(const void *ptr)
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{
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const uint8_t *tmp = (const uint8_t *)ptr;
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return (((uint32_t)tmp[0] << 24) |
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((uint32_t)tmp[1] << 16) |
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((uint32_t)tmp[2] << 8) |
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((uint32_t)tmp[3]));
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}
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static inline void
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to_be32(void *out, uint32_t in)
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{
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uint8_t *tmp = (uint8_t *)out;
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tmp[0] = (in >> 24) & 0xFF;
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tmp[1] = (in >> 16) & 0xFF;
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tmp[2] = (in >> 8) & 0xFF;
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tmp[3] = in & 0xFF;
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}
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static inline uint64_t
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from_be64(const void *ptr)
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{
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const uint8_t *tmp = (const uint8_t *)ptr;
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return (((uint64_t)tmp[0] << 56) |
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((uint64_t)tmp[1] << 48) |
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((uint64_t)tmp[2] << 40) |
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((uint64_t)tmp[3] << 32) |
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((uint64_t)tmp[4] << 24) |
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((uint64_t)tmp[5] << 16) |
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((uint64_t)tmp[6] << 8) |
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((uint64_t)tmp[7]));
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}
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static inline void
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to_be64(void *out, uint64_t in)
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{
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uint8_t *tmp = (uint8_t *)out;
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tmp[0] = (in >> 56) & 0xFF;
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tmp[1] = (in >> 48) & 0xFF;
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tmp[2] = (in >> 40) & 0xFF;
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tmp[3] = (in >> 32) & 0xFF;
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tmp[4] = (in >> 24) & 0xFF;
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tmp[5] = (in >> 16) & 0xFF;
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tmp[6] = (in >> 8) & 0xFF;
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tmp[7] = in & 0xFF;
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}
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static inline uint16_t
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from_le16(const void *ptr)
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{
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const uint8_t *tmp = (const uint8_t *)ptr;
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return (((uint16_t)tmp[1] << 8) | tmp[0]);
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}
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static inline void
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to_le16(void *out, uint16_t in)
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{
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uint8_t *tmp = (uint8_t *)out;
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tmp[1] = (in >> 8) & 0xFF;
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tmp[0] = in & 0xFF;
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}
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static inline uint32_t
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from_le32(const void *ptr)
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{
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const uint8_t *tmp = (const uint8_t *)ptr;
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return (((uint32_t)tmp[3] << 24) |
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((uint32_t)tmp[2] << 16) |
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((uint32_t)tmp[1] << 8) |
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((uint32_t)tmp[0]));
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}
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static inline void
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to_le32(void *out, uint32_t in)
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{
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uint8_t *tmp = (uint8_t *)out;
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tmp[3] = (in >> 24) & 0xFF;
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tmp[2] = (in >> 16) & 0xFF;
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tmp[1] = (in >> 8) & 0xFF;
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tmp[0] = in & 0xFF;
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}
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static inline uint64_t
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from_le64(const void *ptr)
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{
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const uint8_t *tmp = (const uint8_t *)ptr;
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return (((uint64_t)tmp[7] << 56) |
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((uint64_t)tmp[6] << 48) |
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((uint64_t)tmp[5] << 40) |
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((uint64_t)tmp[4] << 32) |
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((uint64_t)tmp[3] << 24) |
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((uint64_t)tmp[2] << 16) |
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((uint64_t)tmp[1] << 8) |
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((uint64_t)tmp[0]));
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}
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static inline void
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to_le64(void *out, uint64_t in)
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{
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uint8_t *tmp = (uint8_t *)out;
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tmp[7] = (in >> 56) & 0xFF;
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tmp[6] = (in >> 48) & 0xFF;
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tmp[5] = (in >> 40) & 0xFF;
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tmp[4] = (in >> 32) & 0xFF;
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tmp[3] = (in >> 24) & 0xFF;
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tmp[2] = (in >> 16) & 0xFF;
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tmp[1] = (in >> 8) & 0xFF;
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tmp[0] = in & 0xFF;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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