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
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/* byte-order stuff
* Copyright (C) 1998, 1999 D. Hugh Redelmeier.
*
* This program 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 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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.
*
* RCSID $Id: endian.h,v 1.6 2002/04/24 07:35:49 mcr Exp $
*/
/* sets BYTE_ORDER, LITTLE_ENDIAN, and BIG_ENDIAN */
#if defined(__OpenBSD__) || defined(__NetBSD__)
# include <machine/endian.h>
#elif linux
# if defined(i386) && !defined(__i386__)
# define __i386__ 1
# define MYHACKFORTHIS 1
# endif
# include <endian.h>
# if 0 /* kernel's <asm/byteorder.h> clashes with glibc's <netinet/in.h> */
/* The problem (in RedHat 5.0) is the typing of the "longs" (32-bit values)
* in the [nh]to[hn]l functions:
* - <asm/byteorder.h> uses unsigned long
* - <netinet/in.h> uses u_int32_t which is unsigned int
* Since 64-bit machines are supported, <asm/byteorder.h> should be changed.
* For now, we simply don't use <asm/byteorder.h>.
*/
# include <asm/byteorder.h>
# endif
# ifdef MYHACKFORTHIS
# undef __i386__
# undef MYHACKFORTHIS
# endif
#elif !(defined(BIG_ENDIAN) && defined(LITTLE_ENDIAN) && defined(BYTE_ORDER))
/* we don't know how to do this, so we require the macros to be defined
* with compiler flags:
* -DBIG_ENDIAN=4321 -DLITTLE_ENDIAN=1234 -DBYTE_ORDER=BIG_ENDIAN
* or -DBIG_ENDIAN=4321 -DLITTLE_ENDIAN=1234 -DBYTE_ORDER=LITTLE_ENDIAN
* Thse match the GNU definitions
*/
# include <sys/endian.h>
#endif
#ifndef BIG_ENDIAN
#error BIG_ENDIAN must be defined
#endif
#ifndef LITTLE_ENDIAN
#error LITTLE_ENDIAN must be defined
#endif
#ifndef BYTE_ORDER
#error BYTE_ORDER must be defined
#endif
|
