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[libc] Rewrite byte-swapping code

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2015-03-02 16:25:53 +00:00
parent 8ab4b00442
commit 01d16d821f
9 changed files with 154 additions and 152 deletions
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31
src/include/endian.h
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@@ -1,21 +1,22 @@
#ifndef ETHERBOOT_ENDIAN_H
#define ETHERBOOT_ENDIAN_H
#ifndef _ENDIAN_H
#define _ENDIAN_H
FILE_LICENCE ( GPL2_OR_LATER );
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/* Definitions for byte order, according to significance of bytes,
from low addresses to high addresses. The value is what you get by
putting '4' in the most significant byte, '3' in the second most
significant byte, '2' in the second least significant byte, and '1'
in the least significant byte, and then writing down one digit for
each byte, starting with the byte at the lowest address at the left,
and proceeding to the byte with the highest address at the right. */
/** Constant representing little-endian byte order
*
* Little-endian systems should define BYTE_ORDER as LITTLE_ENDIAN.
* This constant is intended to be used only at compile time.
*/
#define __LITTLE_ENDIAN 0x44332211UL
#define __LITTLE_ENDIAN 1234
#define __BIG_ENDIAN 4321
#define __PDP_ENDIAN 3412
/** Constant representing big-endian byte order
*
* Big-endian systems should define BYTE_ORDER as BIG_ENDIAN.
* This constant is intended to be used only at compile time.
*/
#define __BIG_ENDIAN 0x11223344UL
#include "bits/endian.h"
#endif /* ETHERBOOT_ENDIAN_H */
#endif /* _ENDIAN_H */