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gerrit-public.fairphone.software / platform / external / compiler-rt / 2fb08720b11b4c339e191b90d85477c6a2dd74db / . / lib / int_endianness.h
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Daniel Dunbar0a3e3502011-11-15 18:56:21 +0000[diff] [blame]1/* ===-- int_endianness.h - configuration header for compiler-rt ------------===
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]2 *
3 * The LLVM Compiler Infrastructure
4 *
Howard Hinnant9ad441f2010-11-16 22:13:33 +0000[diff] [blame]5 * This file is dual licensed under the MIT and the University of Illinois Open
6 * Source Licenses. See LICENSE.TXT for details.
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]7 *
8 * ===----------------------------------------------------------------------===
9 *
Daniel Dunbar4467b652009-10-27 17:48:46 +0000[diff] [blame]10 * This file is a configuration header for compiler-rt.
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]11 * This file is not part of the interface of this library.
12 *
13 * ===----------------------------------------------------------------------===
14 */
15
Daniel Dunbar0a3e3502011-11-15 18:56:21 +0000[diff] [blame]16#ifndef INT_ENDIANNESS_H
17#define INT_ENDIANNESS_H
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]18
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]19#if defined(__SVR4) && defined(__sun)
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]20#include <sys/byteorder.h>
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]21
Joerg Sonnenberger7840d7d2013-08-17 22:32:10 +0000[diff] [blame]22#if defined(_BIG_ENDIAN)
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]23#define _YUGA_LITTLE_ENDIAN 0
24#define _YUGA_BIG_ENDIAN 1
Joerg Sonnenberger7840d7d2013-08-17 22:32:10 +0000[diff] [blame]25#elif defined(_LITTLE_ENDIAN)
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]26#define _YUGA_LITTLE_ENDIAN 1
27#define _YUGA_BIG_ENDIAN 0
Joerg Sonnenberger7840d7d2013-08-17 22:32:10 +0000[diff] [blame]28#else /* !_LITTLE_ENDIAN */
29#error "unknown endianness"
30#endif /* !_LITTLE_ENDIAN */
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]31
32#endif /* Solaris and AuroraUX. */
33
34/* .. */
35
Eric Christopher47a953e2012-09-20 06:19:20 +0000[diff] [blame]36#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__minix)
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]37#include <sys/endian.h>
38
39#if _BYTE_ORDER == _BIG_ENDIAN
40#define _YUGA_LITTLE_ENDIAN 0
41#define _YUGA_BIG_ENDIAN 1
42#elif _BYTE_ORDER == _LITTLE_ENDIAN
43#define _YUGA_LITTLE_ENDIAN 1
44#define _YUGA_BIG_ENDIAN 0
45#endif /* _BYTE_ORDER */
46
47#endif /* *BSD */
48
Eric Christopher47a953e2012-09-20 06:19:20 +0000[diff] [blame]49#if defined(__OpenBSD__) || defined(__Bitrig__)
50#include <machine/endian.h>
51
52#if _BYTE_ORDER == _BIG_ENDIAN
53#define _YUGA_LITTLE_ENDIAN 0
54#define _YUGA_BIG_ENDIAN 1
55#elif _BYTE_ORDER == _LITTLE_ENDIAN
56#define _YUGA_LITTLE_ENDIAN 1
57#define _YUGA_BIG_ENDIAN 0
58#endif /* _BYTE_ORDER */
59
60#endif /* OpenBSD and Bitrig. */
61
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]62/* .. */
63
64/* Mac OSX has __BIG_ENDIAN__ or __LITTLE_ENDIAN__ automatically set by the compiler (at least with GCC) */
Edward O'Callaghane8178e22009-08-18 11:54:44 +0000[diff] [blame]65#if defined(__APPLE__) && defined(__MACH__) || defined(__ellcc__ )
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]66
67#ifdef __BIG_ENDIAN__
68#if __BIG_ENDIAN__
69#define _YUGA_LITTLE_ENDIAN 0
70#define _YUGA_BIG_ENDIAN 1
71#endif
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]72#endif /* __BIG_ENDIAN__ */
73
74#ifdef __LITTLE_ENDIAN__
75#if __LITTLE_ENDIAN__
76#define _YUGA_LITTLE_ENDIAN 1
77#define _YUGA_BIG_ENDIAN 0
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]78#endif
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]79#endif /* __LITTLE_ENDIAN__ */
80
81#endif /* Mac OSX */
82
83/* .. */
84
Nuno Lopes166b7832009-08-09 18:59:21 +0000[diff] [blame]85#if defined(__linux__)
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]86#include <endian.h>
87
88#if __BYTE_ORDER == __BIG_ENDIAN
89#define _YUGA_LITTLE_ENDIAN 0
90#define _YUGA_BIG_ENDIAN 1
91#elif __BYTE_ORDER == __LITTLE_ENDIAN
92#define _YUGA_LITTLE_ENDIAN 1
93#define _YUGA_BIG_ENDIAN 0
94#endif /* __BYTE_ORDER */
95
96#endif /* GNU/Linux */
97
Anton Korobeynikov7e8904f2012-01-12 21:13:48 +0000[diff] [blame]98#if defined(_WIN32)
99
100#define _YUGA_LITTLE_ENDIAN 1
101#define _YUGA_BIG_ENDIAN 0
102
103#endif /* Windows */
104
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]105/* . */
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]106
107#if !defined(_YUGA_LITTLE_ENDIAN) || !defined(_YUGA_BIG_ENDIAN)
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]108#error Unable to determine endian
109#endif /* Check we found an endianness correctly. */
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]110
Daniel Dunbar0a3e3502011-11-15 18:56:21 +0000[diff] [blame]111#endif /* INT_ENDIANNESS_H */