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gerrit-public.fairphone.software / platform / external / compiler-rt / 0172c8cd8ec72ae11e7b2a2b65b54466ea75de9c / . / 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
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]22#if _BYTE_ORDER == _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
25#elif _BYTE_ORDER == _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
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]28#endif /* _BYTE_ORDER */
29
30#endif /* Solaris and AuroraUX. */
31
32/* .. */
33
Eric Christopher47a953e2012-09-20 06:19:20 +0000[diff] [blame]34#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__minix)
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]35#include <sys/endian.h>
36
37#if _BYTE_ORDER == _BIG_ENDIAN
38#define _YUGA_LITTLE_ENDIAN 0
39#define _YUGA_BIG_ENDIAN 1
40#elif _BYTE_ORDER == _LITTLE_ENDIAN
41#define _YUGA_LITTLE_ENDIAN 1
42#define _YUGA_BIG_ENDIAN 0
43#endif /* _BYTE_ORDER */
44
45#endif /* *BSD */
46
Eric Christopher47a953e2012-09-20 06:19:20 +0000[diff] [blame]47#if defined(__OpenBSD__) || defined(__Bitrig__)
48#include <machine/endian.h>
49
50#if _BYTE_ORDER == _BIG_ENDIAN
51#define _YUGA_LITTLE_ENDIAN 0
52#define _YUGA_BIG_ENDIAN 1
53#elif _BYTE_ORDER == _LITTLE_ENDIAN
54#define _YUGA_LITTLE_ENDIAN 1
55#define _YUGA_BIG_ENDIAN 0
56#endif /* _BYTE_ORDER */
57
58#endif /* OpenBSD and Bitrig. */
59
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]60/* .. */
61
62/* 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]63#if defined(__APPLE__) && defined(__MACH__) || defined(__ellcc__ )
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]64
65#ifdef __BIG_ENDIAN__
66#if __BIG_ENDIAN__
67#define _YUGA_LITTLE_ENDIAN 0
68#define _YUGA_BIG_ENDIAN 1
69#endif
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]70#endif /* __BIG_ENDIAN__ */
71
72#ifdef __LITTLE_ENDIAN__
73#if __LITTLE_ENDIAN__
74#define _YUGA_LITTLE_ENDIAN 1
75#define _YUGA_BIG_ENDIAN 0
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]76#endif
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]77#endif /* __LITTLE_ENDIAN__ */
78
79#endif /* Mac OSX */
80
81/* .. */
82
Nuno Lopes166b7832009-08-09 18:59:21 +0000[diff] [blame]83#if defined(__linux__)
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]84#include <endian.h>
85
86#if __BYTE_ORDER == __BIG_ENDIAN
87#define _YUGA_LITTLE_ENDIAN 0
88#define _YUGA_BIG_ENDIAN 1
89#elif __BYTE_ORDER == __LITTLE_ENDIAN
90#define _YUGA_LITTLE_ENDIAN 1
91#define _YUGA_BIG_ENDIAN 0
92#endif /* __BYTE_ORDER */
93
94#endif /* GNU/Linux */
95
Anton Korobeynikov7e8904f2012-01-12 21:13:48 +0000[diff] [blame]96#if defined(_WIN32)
97
98#define _YUGA_LITTLE_ENDIAN 1
99#define _YUGA_BIG_ENDIAN 0
100
101#endif /* Windows */
102
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]103/* . */
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]104
105#if !defined(_YUGA_LITTLE_ENDIAN) || !defined(_YUGA_BIG_ENDIAN)
Edward O'Callaghanbb119a42009-08-08 02:31:50 +0000[diff] [blame]106#error Unable to determine endian
107#endif /* Check we found an endianness correctly. */
Edward O'Callaghan1fcb40b2009-08-05 19:06:50 +0000[diff] [blame]108
Daniel Dunbar0a3e3502011-11-15 18:56:21 +0000[diff] [blame]109#endif /* INT_ENDIANNESS_H */