1*0a6a1f1dSLionel Sambuc /* ===-- int_endianness.h - configuration header for compiler-rt ------------=== 2*0a6a1f1dSLionel Sambuc * 3*0a6a1f1dSLionel Sambuc * The LLVM Compiler Infrastructure 4*0a6a1f1dSLionel Sambuc * 5*0a6a1f1dSLionel Sambuc * This file is dual licensed under the MIT and the University of Illinois Open 6*0a6a1f1dSLionel Sambuc * Source Licenses. See LICENSE.TXT for details. 7*0a6a1f1dSLionel Sambuc * 8*0a6a1f1dSLionel Sambuc * ===----------------------------------------------------------------------=== 9*0a6a1f1dSLionel Sambuc * 10*0a6a1f1dSLionel Sambuc * This file is a configuration header for compiler-rt. 11*0a6a1f1dSLionel Sambuc * This file is not part of the interface of this library. 12*0a6a1f1dSLionel Sambuc * 13*0a6a1f1dSLionel Sambuc * ===----------------------------------------------------------------------=== 14*0a6a1f1dSLionel Sambuc */ 15*0a6a1f1dSLionel Sambuc 16*0a6a1f1dSLionel Sambuc #ifndef INT_ENDIANNESS_H 17*0a6a1f1dSLionel Sambuc #define INT_ENDIANNESS_H 18*0a6a1f1dSLionel Sambuc 19*0a6a1f1dSLionel Sambuc #if defined(__SVR4) && defined(__sun) 20*0a6a1f1dSLionel Sambuc #include <sys/byteorder.h> 21*0a6a1f1dSLionel Sambuc 22*0a6a1f1dSLionel Sambuc #if defined(_BIG_ENDIAN) 23*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 0 24*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 1 25*0a6a1f1dSLionel Sambuc #elif defined(_LITTLE_ENDIAN) 26*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 1 27*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 0 28*0a6a1f1dSLionel Sambuc #else /* !_LITTLE_ENDIAN */ 29*0a6a1f1dSLionel Sambuc #error "unknown endianness" 30*0a6a1f1dSLionel Sambuc #endif /* !_LITTLE_ENDIAN */ 31*0a6a1f1dSLionel Sambuc 32*0a6a1f1dSLionel Sambuc #endif /* Solaris and AuroraUX. */ 33*0a6a1f1dSLionel Sambuc 34*0a6a1f1dSLionel Sambuc /* .. */ 35*0a6a1f1dSLionel Sambuc 36*0a6a1f1dSLionel Sambuc #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__minix) 37*0a6a1f1dSLionel Sambuc #include <sys/endian.h> 38*0a6a1f1dSLionel Sambuc 39*0a6a1f1dSLionel Sambuc #if _BYTE_ORDER == _BIG_ENDIAN 40*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 0 41*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 1 42*0a6a1f1dSLionel Sambuc #elif _BYTE_ORDER == _LITTLE_ENDIAN 43*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 1 44*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 0 45*0a6a1f1dSLionel Sambuc #endif /* _BYTE_ORDER */ 46*0a6a1f1dSLionel Sambuc 47*0a6a1f1dSLionel Sambuc #endif /* *BSD */ 48*0a6a1f1dSLionel Sambuc 49*0a6a1f1dSLionel Sambuc #if defined(__OpenBSD__) || defined(__Bitrig__) 50*0a6a1f1dSLionel Sambuc #include <machine/endian.h> 51*0a6a1f1dSLionel Sambuc 52*0a6a1f1dSLionel Sambuc #if _BYTE_ORDER == _BIG_ENDIAN 53*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 0 54*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 1 55*0a6a1f1dSLionel Sambuc #elif _BYTE_ORDER == _LITTLE_ENDIAN 56*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 1 57*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 0 58*0a6a1f1dSLionel Sambuc #endif /* _BYTE_ORDER */ 59*0a6a1f1dSLionel Sambuc 60*0a6a1f1dSLionel Sambuc #endif /* OpenBSD and Bitrig. */ 61*0a6a1f1dSLionel Sambuc 62*0a6a1f1dSLionel Sambuc /* .. */ 63*0a6a1f1dSLionel Sambuc 64*0a6a1f1dSLionel Sambuc /* Mac OSX has __BIG_ENDIAN__ or __LITTLE_ENDIAN__ automatically set by the compiler (at least with GCC) */ 65*0a6a1f1dSLionel Sambuc #if defined(__APPLE__) || defined(__ellcc__ ) 66*0a6a1f1dSLionel Sambuc 67*0a6a1f1dSLionel Sambuc #ifdef __BIG_ENDIAN__ 68*0a6a1f1dSLionel Sambuc #if __BIG_ENDIAN__ 69*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 0 70*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 1 71*0a6a1f1dSLionel Sambuc #endif 72*0a6a1f1dSLionel Sambuc #endif /* __BIG_ENDIAN__ */ 73*0a6a1f1dSLionel Sambuc 74*0a6a1f1dSLionel Sambuc #ifdef __LITTLE_ENDIAN__ 75*0a6a1f1dSLionel Sambuc #if __LITTLE_ENDIAN__ 76*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 1 77*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 0 78*0a6a1f1dSLionel Sambuc #endif 79*0a6a1f1dSLionel Sambuc #endif /* __LITTLE_ENDIAN__ */ 80*0a6a1f1dSLionel Sambuc 81*0a6a1f1dSLionel Sambuc #endif /* Mac OSX */ 82*0a6a1f1dSLionel Sambuc 83*0a6a1f1dSLionel Sambuc /* .. */ 84*0a6a1f1dSLionel Sambuc 85*0a6a1f1dSLionel Sambuc #if defined(__linux__) 86*0a6a1f1dSLionel Sambuc #include <endian.h> 87*0a6a1f1dSLionel Sambuc 88*0a6a1f1dSLionel Sambuc #if __BYTE_ORDER == __BIG_ENDIAN 89*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 0 90*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 1 91*0a6a1f1dSLionel Sambuc #elif __BYTE_ORDER == __LITTLE_ENDIAN 92*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 1 93*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 0 94*0a6a1f1dSLionel Sambuc #endif /* __BYTE_ORDER */ 95*0a6a1f1dSLionel Sambuc 96*0a6a1f1dSLionel Sambuc #endif /* GNU/Linux */ 97*0a6a1f1dSLionel Sambuc 98*0a6a1f1dSLionel Sambuc #if defined(_WIN32) 99*0a6a1f1dSLionel Sambuc 100*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 1 101*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 0 102*0a6a1f1dSLionel Sambuc 103*0a6a1f1dSLionel Sambuc #endif /* Windows */ 104*0a6a1f1dSLionel Sambuc 105*0a6a1f1dSLionel Sambuc /* . */ 106*0a6a1f1dSLionel Sambuc 107*0a6a1f1dSLionel Sambuc #if !defined(_YUGA_LITTLE_ENDIAN) || !defined(_YUGA_BIG_ENDIAN) 108*0a6a1f1dSLionel Sambuc #error Unable to determine endian 109*0a6a1f1dSLionel Sambuc #endif /* Check we found an endianness correctly. */ 110*0a6a1f1dSLionel Sambuc 111*0a6a1f1dSLionel Sambuc #endif /* INT_ENDIANNESS_H */ 112