1#ifndef _XARCH_H_
2# define _XARCH_H_
3
4/*
5 * Copyright 1997 Metro Link Incorporated
6 *
7 *                           All Rights Reserved
8 *
9 * Permission to use, copy, modify, distribute, and sell this software and its
10 * documentation for any purpose is hereby granted without fee, provided that
11 * the above copyright notice appear in all copies and that both that
12 * copyright notice and this permission notice appear in supporting
13 * documentation, and that the names of the above listed copyright holder(s)
14 * not be used in advertising or publicity pertaining to distribution of
15 * the software without specific, written prior permission.  The above listed
16 * copyright holder(s) make(s) no representations about the suitability of
17 * this software for any purpose.  It is provided "as is" without express or
18 * implied warranty.
19 *
20 * THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM(S) ALL WARRANTIES WITH REGARD
21 * TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
22 * AND FITNESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE
23 * LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
24 * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
25 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
26 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
27 */
28
29
30/*
31 * Determine the machine's byte order.
32 */
33
34/* See if it is set in the imake config first */
35# ifdef X_BYTE_ORDER
36
37#  define X_BIG_ENDIAN 4321
38#  define X_LITTLE_ENDIAN 1234
39
40# else
41
42#  if defined(SVR4) || defined(__SVR4)
43#   include <sys/types.h>
44#   include <sys/byteorder.h>
45#  elif defined(CSRG_BASED)
46#   if defined(__NetBSD__) || defined(__OpenBSD__)
47#    include <sys/types.h>
48#   endif
49#   include <machine/endian.h>
50#  elif defined(linux)
51#   if defined __STRICT_ANSI__
52#    undef __STRICT_ANSI__
53#    include <endian.h>
54#    define __STRICT_ANSI__
55#   else
56#    include <endian.h>
57#   endif
58/* 'endian.h' might have been included before 'Xarch.h' */
59#   if !defined(LITTLE_ENDIAN) && defined(__LITTLE_ENDIAN)
60#    define LITTLE_ENDIAN __LITTLE_ENDIAN
61#   endif
62#   if !defined(BIG_ENDIAN) && defined(__BIG_ENDIAN)
63#    define BIG_ENDIAN __BIG_ENDIAN
64#   endif
65#   if !defined(PDP_ENDIAN) && defined(__PDP_ENDIAN)
66#    define PDP_ENDIAN __PDP_ENDIAN
67#   endif
68#   if !defined(BYTE_ORDER) && defined(__BYTE_ORDER)
69#    define BYTE_ORDER __BYTE_ORDER
70#   endif
71#  endif
72
73#  ifndef BYTE_ORDER
74#   define LITTLE_ENDIAN 1234
75#   define BIG_ENDIAN    4321
76
77#   if defined(__sun) && defined(__SVR4)
78#    include <sys/isa_defs.h>
79#    ifdef _LITTLE_ENDIAN
80#     define BYTE_ORDER LITTLE_ENDIAN
81#    endif
82#    ifdef _BIG_ENDIAN
83#     define BYTE_ORDER BIG_ENDIAN
84#    endif
85#   endif /* sun */
86#  endif /* BYTE_ORDER */
87
88#  define X_BYTE_ORDER BYTE_ORDER
89#  define X_BIG_ENDIAN BIG_ENDIAN
90#  define X_LITTLE_ENDIAN LITTLE_ENDIAN
91
92# endif /* not in imake config */
93
94#endif /* _XARCH_H_ */
95