GNU libmicrohttpd  0.9.72
mhd_byteorder.h
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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 
26 #ifndef MHD_BYTEORDER_H
27 #define MHD_BYTEORDER_H
28 
29 #include "mhd_options.h"
30 
31 #include <stdint.h>
32 
33 #if HAVE_ENDIAN_H
34 #include <endian.h>
35 #endif
36 
37 #if HAVE_SYS_PARAM_H
38 #include <sys/param.h>
39 #endif
40 
41 #if HAVE_MACHINE_ENDIAN_H
42 #include <machine/endian.h>
43 #endif
44 
45 #if HAVE_SYS_ENDIAN_H
46 #include <sys/endian.h>
47 #endif
48 
49 #if HAVE_SYS_TYPES_H
50 #include <sys/types.h>
51 #endif
52 
53 #if HAVE_SYS_BYTEORDER_H
54 #include <sys/byteorder.h>
55 #endif
56 
57 #if HAVE_SYS_MACHINE_H
58 #include <sys/machine.h>
59 #endif
60 
61 #if HAVE_MACHINE_PARAM_H
62 #include <machine/param.h>
63 #endif
64 
65 #if HAVE_SYS_ISA_DEFS_H
66 #include <sys/isa_defs.h>
67 #endif
68 
69 #define _MHD_BIG_ENDIAN 1234
70 #define _MHD_LITTLE_ENDIAN 4321
71 #define _MHD_PDP_ENDIAN 2143
72 
73 #if defined(__BYTE_ORDER__)
74 #if defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
75 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
76 #elif defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == \
77  __ORDER_LITTLE_ENDIAN__
78 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
79 #elif defined(__ORDER_PDP_ENDIAN__) && __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__
80 #define _MHD_BYTE_ORDER _MHD_PDP_ENDIAN
81 #endif /* __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__ */
82 #elif defined(__BYTE_ORDER)
83 #if defined(__BIG_ENDIAN) && __BYTE_ORDER == __BIG_ENDIAN
84 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
85 #elif defined(__LITTLE_ENDIAN) && __BYTE_ORDER == __LITTLE_ENDIAN
86 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
87 #elif defined(__PDP_ENDIAN) && __BYTE_ORDER == __PDP_ENDIAN
88 #define _MHD_BYTE_ORDER _MHD_PDP_ENDIAN
89 #endif /* __BYTE_ORDER == __PDP_ENDIAN */
90 #elif defined (BYTE_ORDER)
91 #if defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
92 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
93 #elif defined(LITTLE_ENDIAN) && BYTE_ORDER == LITTLE_ENDIAN
94 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
95 #elif defined(PDP_ENDIAN) && BYTE_ORDER == PDP_ENDIAN
96 #define _MHD_BYTE_ORDER _MHD_PDP_ENDIAN
97 #endif /* __BYTE_ORDER == _PDP_ENDIAN */
98 #elif defined (_BYTE_ORDER)
99 #if defined(_BIG_ENDIAN) && _BYTE_ORDER == _BIG_ENDIAN
100 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
101 #elif defined(_LITTLE_ENDIAN) && _BYTE_ORDER == _LITTLE_ENDIAN
102 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
103 #elif defined(_PDP_ENDIAN) && _BYTE_ORDER == _PDP_ENDIAN
104 #define _MHD_BYTE_ORDER _MHD_PDP_ENDIAN
105 #endif /* _BYTE_ORDER == _PDP_ENDIAN */
106 #endif /* _BYTE_ORDER */
107 
108 #ifndef _MHD_BYTE_ORDER
109 /* Byte order specification didn't detected in system headers */
110 /* Try some guessing */
111 
112 #if (defined(__BIG_ENDIAN__) && ! defined(__LITTLE_ENDIAN__)) || \
113  (defined(_BIG_ENDIAN) && ! defined(_LITTLE_ENDIAN))
114 /* Seems that we are on big endian platform */
115 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
116 #elif (defined(__LITTLE_ENDIAN__) && ! defined(__BIG_ENDIAN__)) || \
117  (defined(_LITTLE_ENDIAN) && ! defined(_BIG_ENDIAN))
118 /* Seems that we are on little endian platform */
119 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
120 #elif defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || \
121  defined(__x86_64) || \
122  defined(_M_X64) || defined(_M_AMD64) || defined(i386) || defined(__i386) || \
123  defined(__i386__) || defined(__i486__) || defined(__i586__) || \
124  defined(__i686__) || \
125  defined(_M_IX86) || defined(_X86_) || defined (__THW_INTEL__)
126 /* x86 family is little endian */
127 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
128 #elif defined(__ARMEB__) || defined(__THUMBEB__) || defined(__AARCH64EB__) || \
129  defined(_MIPSEB) || defined(__MIPSEB) || defined(__MIPSEB__)
130 /* Looks like we are on ARM/MIPS in big endian mode */
131 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
132 #elif defined(__ARMEL__) || defined(__THUMBEL__) || defined(__AARCH64EL__) || \
133  defined(_MIPSEL) || defined(__MIPSEL) || defined(__MIPSEL__)
134 /* Looks like we are on ARM/MIPS in little endian mode */
135 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
136 #elif defined(__m68k__) || defined(M68000) || defined(__hppa__) || \
137  defined(__hppa) || \
138  defined(__HPPA__) || defined(__370__) || defined(__THW_370__) || \
139  defined(__s390__) || defined(__s390x__) || defined(__SYSC_ZARCH__)
140 /* Looks like we are on big endian platform */
141 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
142 #elif defined(__ia64__) || defined(_IA64) || defined(__IA64__) || \
143  defined(__ia64) || \
144  defined(_M_IA64) || defined(__itanium__) || defined(__bfin__) || \
145  defined(__BFIN__) || defined(bfin) || defined(BFIN)
146 /* Looks like we are on little endian platform */
147 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
148 #elif defined(_WIN32)
149 /* W32 is always little endian on all platforms */
150 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN
151 #elif defined(WORDS_BIGENDIAN)
152 /* Use byte order detected by configure */
153 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN
154 #endif /* _WIN32 */
155 
156 #endif /* !_MHD_BYTE_ORDER */
157 
158 #ifdef _MHD_BYTE_ORDER
159 /* Some safety checks */
160 #if defined(WORDS_BIGENDIAN) && _MHD_BYTE_ORDER != _MHD_BIG_ENDIAN
161 #error \
162  Configure detected big endian byte order but headers specify different byte order
163 #elif ! defined(WORDS_BIGENDIAN) && _MHD_BYTE_ORDER == _MHD_BIG_ENDIAN
164 #error \
165  Configure did not detect big endian byte order but headers specify big endian byte order
166 #endif /* !WORDS_BIGENDIAN && _MHD_BYTE_ORDER == _MHD_BIG_ENDIAN */
167 #endif /* _MHD_BYTE_ORDER */
168 
169 #endif /* !MHD_BYTEORDER_H */
additional automatic macros for MHD_config.h