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/* C:B**************************************************************************
This software is Copyright 2014-2017 Bright Plaza Inc. <drivetrust@drivetrust.com>
This file is part of sedutil.
sedutil is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
sedutil is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with sedutil. If not, see <http://www.gnu.org/licenses/>.
* C:E********************************************************************** */
/* These are a few macros to fixup the endianess of the data
* returned by the drive as specified in the TCG OPAL SSC standards
* Since this is a low use utility program it shouldn't be to
* ugly that these are macros
*/
/*
* Windows provides system call in the network stack to do this but
* I've never had much luck when the winsock headers get in the mix
*/
//
//TODO: add a test on the endianess of the system and define
// empty macros if the system is big endian
#pragma once
#ifdef __gnu_linux__
#include <endian.h>
#if __BYTE_ORDER != __LITTLE_ENDIAN
#error This code does not support big endian architectures
#endif
#endif
/** change the "endianess" of a 16bit field */
#define SWAP16(x) ((uint16_t) ((x & 0x00ff) << 8) | ((x & 0xff00) >> 8))
/** change the "endianess" of a 32bit field */
#define SWAP32(x) ((uint32_t) (((x) & 0x000000ff) << 24) | (((x) & 0x0000ff00) << 8) \
| (((x) & 0x00ff0000) >> 8) | (((x) & 0xff000000) >> 24))
/** change the "endianess" of a 64bit field */
#define SWAP64(x) (uint64_t) \
((uint64_t) (SWAP32((x & 0x00000000ffffffff)) << 32) | \
((uint64_t) (SWAP32((x >> 32))) ) \
)
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