1*0a6a1f1dSLionel Sambuc /* ===-- endianness.h - configuration header for libgcc replacement --------=== 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 libgcc replacement. 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 ENDIANNESS_H 17*0a6a1f1dSLionel Sambuc #define ENDIANNESS_H 18*0a6a1f1dSLionel Sambuc 19*0a6a1f1dSLionel Sambuc /* 20*0a6a1f1dSLionel Sambuc * Known limitations: 21*0a6a1f1dSLionel Sambuc * Middle endian systems are not handled currently. 22*0a6a1f1dSLionel Sambuc */ 23*0a6a1f1dSLionel Sambuc 24*0a6a1f1dSLionel Sambuc #if defined(__SVR4) && defined(__sun) 25*0a6a1f1dSLionel Sambuc #include <sys/byteorder.h> 26*0a6a1f1dSLionel Sambuc 27*0a6a1f1dSLionel Sambuc #if _BYTE_ORDER == _BIG_ENDIAN 28*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 0 29*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 1 30*0a6a1f1dSLionel Sambuc #elif _BYTE_ORDER == _LITTLE_ENDIAN 31*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 1 32*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 0 33*0a6a1f1dSLionel Sambuc #endif /* _BYTE_ORDER */ 34*0a6a1f1dSLionel Sambuc 35*0a6a1f1dSLionel Sambuc #endif /* Solaris and AuroraUX. */ 36*0a6a1f1dSLionel Sambuc 37*0a6a1f1dSLionel Sambuc /* .. */ 38*0a6a1f1dSLionel Sambuc 39*0a6a1f1dSLionel Sambuc #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonflyBSD__) || defined(__minix) 40*0a6a1f1dSLionel Sambuc #include <sys/endian.h> 41*0a6a1f1dSLionel Sambuc 42*0a6a1f1dSLionel Sambuc #if _BYTE_ORDER == _BIG_ENDIAN 43*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 0 44*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 1 45*0a6a1f1dSLionel Sambuc #elif _BYTE_ORDER == _LITTLE_ENDIAN 46*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 1 47*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 0 48*0a6a1f1dSLionel Sambuc #endif /* _BYTE_ORDER */ 49*0a6a1f1dSLionel Sambuc 50*0a6a1f1dSLionel Sambuc #endif /* *BSD */ 51*0a6a1f1dSLionel Sambuc 52*0a6a1f1dSLionel Sambuc /* .. */ 53*0a6a1f1dSLionel Sambuc 54*0a6a1f1dSLionel Sambuc #if defined(__OpenBSD__) || defined(__Bitrig__) 55*0a6a1f1dSLionel Sambuc #include <machine/endian.h> 56*0a6a1f1dSLionel Sambuc 57*0a6a1f1dSLionel Sambuc #if _BYTE_ORDER == _BIG_ENDIAN 58*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 0 59*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 1 60*0a6a1f1dSLionel Sambuc #elif _BYTE_ORDER == _LITTLE_ENDIAN 61*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 1 62*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 0 63*0a6a1f1dSLionel Sambuc #endif /* _BYTE_ORDER */ 64*0a6a1f1dSLionel Sambuc 65*0a6a1f1dSLionel Sambuc #endif /* OpenBSD and Bitrig. */ 66*0a6a1f1dSLionel Sambuc 67*0a6a1f1dSLionel Sambuc /* .. */ 68*0a6a1f1dSLionel Sambuc 69*0a6a1f1dSLionel Sambuc /* Mac OSX has __BIG_ENDIAN__ or __LITTLE_ENDIAN__ automatically set by the compiler (at least with GCC) */ 70*0a6a1f1dSLionel Sambuc #if defined(__APPLE__) && defined(__MACH__) || defined(__ellcc__ ) 71*0a6a1f1dSLionel Sambuc 72*0a6a1f1dSLionel Sambuc #ifdef __BIG_ENDIAN__ 73*0a6a1f1dSLionel Sambuc #if __BIG_ENDIAN__ 74*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 0 75*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 1 76*0a6a1f1dSLionel Sambuc #endif 77*0a6a1f1dSLionel Sambuc #endif /* __BIG_ENDIAN__ */ 78*0a6a1f1dSLionel Sambuc 79*0a6a1f1dSLionel Sambuc #ifdef __LITTLE_ENDIAN__ 80*0a6a1f1dSLionel Sambuc #if __LITTLE_ENDIAN__ 81*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 1 82*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 0 83*0a6a1f1dSLionel Sambuc #endif 84*0a6a1f1dSLionel Sambuc #endif /* __LITTLE_ENDIAN__ */ 85*0a6a1f1dSLionel Sambuc 86*0a6a1f1dSLionel Sambuc #endif /* Mac OSX */ 87*0a6a1f1dSLionel Sambuc 88*0a6a1f1dSLionel Sambuc /* .. */ 89*0a6a1f1dSLionel Sambuc 90*0a6a1f1dSLionel Sambuc #if defined(__linux__) 91*0a6a1f1dSLionel Sambuc #include <endian.h> 92*0a6a1f1dSLionel Sambuc 93*0a6a1f1dSLionel Sambuc #if __BYTE_ORDER == __BIG_ENDIAN 94*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 0 95*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 1 96*0a6a1f1dSLionel Sambuc #elif __BYTE_ORDER == __LITTLE_ENDIAN 97*0a6a1f1dSLionel Sambuc #define _YUGA_LITTLE_ENDIAN 1 98*0a6a1f1dSLionel Sambuc #define _YUGA_BIG_ENDIAN 0 99*0a6a1f1dSLionel Sambuc #endif /* __BYTE_ORDER */ 100*0a6a1f1dSLionel Sambuc 101*0a6a1f1dSLionel Sambuc #endif /* GNU/Linux */ 102*0a6a1f1dSLionel Sambuc 103*0a6a1f1dSLionel Sambuc /* . */ 104*0a6a1f1dSLionel Sambuc 105*0a6a1f1dSLionel Sambuc #if !defined(_YUGA_LITTLE_ENDIAN) || !defined(_YUGA_BIG_ENDIAN) 106*0a6a1f1dSLionel Sambuc #error Unable to determine endian 107*0a6a1f1dSLionel Sambuc #endif /* Check we found an endianness correctly. */ 108*0a6a1f1dSLionel Sambuc 109*0a6a1f1dSLionel Sambuc #endif /* ENDIANNESS_H */ 110