blob: 9b6a5d722c532735eff2a86ea3eef15fbd0e736d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
/*
* libc/sysdeps/linux/microblaze/bits/byteswap.h -- Macros to swap the order
* of bytes in integer values
*
* Copyright (C) 2001 NEC Corporation
* Copyright (C) 2001 Miles Bader <miles@gnu.org>
* Copyright (C) 1997,1998,2001 Free Software Foundation, Inc.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License. See the file COPYING.LIB in the main
* directory of this archive for more details.
*/
#if !defined _BYTESWAP_H && !defined _NETINET_IN_H
# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead."
#endif
/* Swap bytes in 16 bit value. */
#define __bswap_constant_16(x) \
((((x) >> 8) & 0xff) | (((x) & 0xff) << 8))
# define __bswap_16(x) __bswap_constant_16 (x)
/* Swap bytes in 32 bit value. */
#define __bswap_constant_32(x) \
((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
(((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
# define __bswap_32(x) __bswap_constant_32 (x)
#if defined __GNUC__ && __GNUC__ >= 2
/* Swap bytes in 64 bit value. */
# define __bswap_64(x) \
(__extension__ \
({ union { unsigned long long int __ll; \
unsigned long int __l[2]; } __bswap_64_v, __bswap_64_r; \
__bswap_64_v.__ll = (x); \
__bswap_64_r.__l[0] = __bswap_32 (__bswap_64_v.__l[1]); \
__bswap_64_r.__l[1] = __bswap_32 (__bswap_64_v.__l[0]); \
__bswap_64_r.__ll; }))
#endif
|
