numam-spdk/include/spdk/endian.h
Ben Walker 01d13145c9 scsi: Flesh out the public header file
The public header file was missing some required definitions.

Change-Id: Ic4f8028367b1e21ea00c02660ca36be28da54e37
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
2016-08-03 09:47:28 -07:00

116 lines
3.1 KiB
C

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