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1/*
2 This file is part of libmicrohttpd
3 Copyright (C) 2015 Karlson2k (Evgeny Grin)
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library.
17 If not, see <http://www.gnu.org/licenses/>.
18*/
19
20/**
21 * @file microhttpd/mhd_byteorder.h
22 * @brief macro definitions for host byte order
23 * @author Karlson2k (Evgeny Grin)
24 */
25
26#ifndef MHD_BYTEORDER_H
27#define MHD_BYTEORDER_H
28
29#include "platform.h"
30
31#if HAVE_ENDIAN_H
32#include <endian.h>
33#endif
34
35#if HAVE_SYS_PARAM_H
36#include <sys/param.h>
37#endif
38
39#if HAVE_MACHINE_ENDIAN_H
40#include <machine/endian.h>
41#endif
42
43#if HAVE_SYS_ENDIAN_H
44#include <sys/endian.h>
45#endif
46
47#if HAVE_SYS_TYPES_H
48#include <sys/types.h>
49#endif
50
51#if HAVE_SYS_BYTEORDER_H
52#include <sys/byteorder.h>
53#endif
54
55#if HAVE_SYS_MACHINE_H
56#include <sys/machine.h>
57#endif
58
59#if HAVE_MACHINE_PARAM_H
60#include <machine/param.h>
61#endif
62
63#if HAVE_SYS_ISA_DEFS_H
64#include <sys/isa_defs.h>
65#endif
66
67#define _MHD_BIG_ENDIAN 1234
68#define _MHD_LITTLE_ENDIAN 4321
69#define _MHD_PDP_ENDIAN 2143
70
71#if defined(__BYTE_ORDER__)
72#if defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
73#define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
74#elif defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
75#define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
76#elif defined(__ORDER_PDP_ENDIAN__) && __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__
77#define _MHD_BYTE_ORDER _MHD_PDP_ENDIAN
78#endif /* __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__ */
79#elif defined(__BYTE_ORDER)
80#if defined(__BIG_ENDIAN) && __BYTE_ORDER == __BIG_ENDIAN
81#define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
82#elif defined(__LITTLE_ENDIAN) && __BYTE_ORDER == __LITTLE_ENDIAN
83#define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
84#elif defined(__PDP_ENDIAN) && __BYTE_ORDER == __PDP_ENDIAN
85#define _MHD_BYTE_ORDER _MHD_PDP_ENDIAN
86#endif /* __BYTE_ORDER == __PDP_ENDIAN */
87#elif defined (BYTE_ORDER)
88#if defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
89#define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
90#elif defined(LITTLE_ENDIAN) && BYTE_ORDER == LITTLE_ENDIAN
91#define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
92#elif defined(PDP_ENDIAN) && BYTE_ORDER == PDP_ENDIAN
93#define _MHD_BYTE_ORDER _MHD_PDP_ENDIAN
94#endif /* __BYTE_ORDER == _PDP_ENDIAN */
95#elif defined (_BYTE_ORDER)
96#if defined(_BIG_ENDIAN) && _BYTE_ORDER == _BIG_ENDIAN
97#define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
98#elif defined(_LITTLE_ENDIAN) && _BYTE_ORDER == _LITTLE_ENDIAN
99#define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
100#elif defined(_PDP_ENDIAN) && _BYTE_ORDER == _PDP_ENDIAN
101#define _MHD_BYTE_ORDER _MHD_PDP_ENDIAN
102#endif /* _BYTE_ORDER == _PDP_ENDIAN */
103#endif /* _BYTE_ORDER */
104
105#ifndef _MHD_BYTE_ORDER
106/* Byte order specification didn't detected in system headers */
107/* Try some guessing */
108
109#if (defined(__BIG_ENDIAN__) && !defined(__LITTLE_ENDIAN__)) || \
110 (defined(_BIG_ENDIAN) && !defined(_LITTLE_ENDIAN))
111/* Seems that we are on big endian platform */
112#define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
113#elif (defined(__LITTLE_ENDIAN__) && !defined(__BIG_ENDIAN__)) || \
114 (defined(_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN))
115/* Seems that we are on little endian platform */
116#define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
117#elif defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || defined(__x86_64) || \
118 defined(_M_X64) || defined(_M_AMD64) || defined(i386) || defined(__i386) || \
119 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
120 defined(_M_IX86) || defined(_X86_) || defined (__THW_INTEL__)
121/* x86 family is little endian */
122#define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
123#elif defined(__ARMEB__) || defined(__THUMBEB__) || defined(__AARCH64EB__) || \
124 defined(_MIPSEB) || defined(__MIPSEB) || defined(__MIPSEB__)
125/* Looks like we are on ARM/MIPS in big endian mode */
126#define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
127#elif defined(__ARMEL__) || defined(__THUMBEL__) || defined(__AARCH64EL__) || \
128 defined(_MIPSEL) || defined(__MIPSEL) || defined(__MIPSEL__)
129/* Looks like we are on ARM/MIPS in little endian mode */
130#define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
131#elif defined(__m68k__) || defined(M68000) || defined(__hppa__) || defined(__hppa) || \
132 defined(__HPPA__) || defined(__370__) || defined(__THW_370__) || \
133 defined(__s390__) || defined(__s390x__) || defined(__SYSC_ZARCH__)
134/* Looks like we are on big endian platform */
135#define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
136#elif defined(__ia64__) || defined(_IA64) || defined(__IA64__) || defined(__ia64) || \
137 defined(_M_IA64) || defined(__itanium__) || defined(__bfin__) || \
138 defined(__BFIN__) || defined(bfin) || defined(BFIN)
139/* Looks like we are on little endian platform */
140#define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
141#elif defined(_WIN32)
142/* W32 is always little endian on all platforms */
143#define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
144#elif defined(WORDS_BIGENDIAN)
145/* Use byte order detected by configure */
146#define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
147#endif /* _WIN32 */
148
149#endif /* !_MHD_BYTE_ORDER */
150
151#ifdef _MHD_BYTE_ORDER
152/* Some safety checks */
153#if defined(WORDS_BIGENDIAN) && _MHD_BYTE_ORDER != _MHD_BIG_ENDIAN
154#error Configure detected big endian byte order but headers specify different byte order
155#elif !defined(WORDS_BIGENDIAN) && _MHD_BYTE_ORDER == _MHD_BIG_ENDIAN
156#error Configure did not detect big endian byte order but headers specify big endian byte order
157#endif /* !WORDS_BIGENDIAN && _MHD_BYTE_ORDER == _MHD_BIG_ENDIAN */
158#endif /* _MHD_BYTE_ORDER */
159
160#endif /* !MHD_BYTEORDER_H */