/* byte_order.h */ #ifndef BYTE_ORDER_H #define BYTE_ORDER_H #include "ustd.h" #include #if 0 #if defined(__GLIBC__) # include #endif #endif #if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__APPLE__) # include #elif defined (__NetBSD__) || defined(__OpenBSD__) # include #endif #ifdef __cplusplus extern "C" { #endif /* if x86 compatible cpu */ #if defined(i386) || defined(__i386__) || defined(__i486__) || \ defined(__i586__) || defined(__i686__) || defined(__pentium__) || \ defined(__pentiumpro__) || defined(__pentium4__) || \ defined(__nocona__) || defined(prescott) || defined(__core2__) || \ defined(__k6__) || defined(__k8__) || defined(__athlon__) || \ defined(__amd64) || defined(__amd64__) || \ defined(__x86_64) || defined(__x86_64__) || defined(_M_IX86) || \ defined(_M_AMD64) || defined(_M_IA64) || defined(_M_X64) /* detect if x86-64 instruction set is supported */ # if defined(_LP64) || defined(__LP64__) || defined(__x86_64) || \ defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64) # define CPU_X64 # else # define CPU_IA32 # endif #endif #include #if KWIML_ABI_ENDIAN_ID == KWIML_ABI_ENDIAN_ID_LITTLE # define CPU_LITTLE_ENDIAN # define IS_BIG_ENDIAN 0 # define IS_LITTLE_ENDIAN 1 #elif KWIML_ABI_ENDIAN_ID == KWIML_ABI_ENDIAN_ID_BIG # define CPU_BIG_ENDIAN # define IS_BIG_ENDIAN 1 # define IS_LITTLE_ENDIAN 0 #endif #if 0 #define RHASH_BYTE_ORDER_LE 1234 #define RHASH_BYTE_ORDER_BE 4321 #if (defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && __BYTE_ORDER == __LITTLE_ENDIAN) || \ (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) # define RHASH_BYTE_ORDER RHASH_BYTE_ORDER_LE #elif (defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && __BYTE_ORDER == __BIG_ENDIAN) || \ (defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) # define RHASH_BYTE_ORDER RHASH_BYTE_ORDER_BE #elif defined(_BYTE_ORDER) # if defined(_LITTLE_ENDIAN) && (_BYTE_ORDER == _LITTLE_ENDIAN) # define RHASH_BYTE_ORDER RHASH_BYTE_ORDER_LE # elif defined(_BIG_ENDIAN) && (_BYTE_ORDER == _BIG_ENDIAN) # define RHASH_BYTE_ORDER RHASH_BYTE_ORDER_BE # endif #elif defined(__sun) && defined(_LITTLE_ENDIAN) # define RHASH_BYTE_ORDER RHASH_BYTE_ORDER_LE #elif defined(__sun) && defined(_BIG_ENDIAN) # define RHASH_BYTE_ORDER RHASH_BYTE_ORDER_BE #endif /* try detecting endianness by CPU */ #ifdef RHASH_BYTE_ORDER #elif defined(CPU_IA32) || defined(CPU_X64) || defined(__ia64) || defined(__ia64__) || \ defined(__alpha__) || defined(_M_ALPHA) || defined(vax) || defined(MIPSEL) || \ defined(_ARM_) || defined(__arm__) # define RHASH_BYTE_ORDER RHASH_BYTE_ORDER_LE #elif defined(__sparc) || defined(__sparc__) || defined(sparc) || \ defined(_ARCH_PPC) || defined(_ARCH_PPC64) || defined(_POWER) || \ defined(__POWERPC__) || defined(POWERPC) || defined(__powerpc) || \ defined(__powerpc__) || defined(__powerpc64__) || defined(__ppc__) || \ defined(__hpux) || defined(_MIPSEB) || defined(mc68000) || \ defined(__s390__) || defined(__s390x__) || defined(sel) # define RHASH_BYTE_ORDER RHASH_BYTE_ORDER_BE #else # error "Can't detect CPU architechture" #endif #define IS_BIG_ENDIAN (RHASH_BYTE_ORDER == RHASH_BYTE_ORDER_BE) #define IS_LITTLE_ENDIAN (RHASH_BYTE_ORDER == RHASH_BYTE_ORDER_LE) #endif #ifndef __has_builtin # define __has_builtin(x) 0 #endif #define IS_ALIGNED_32(p) (0 == (3 & ((const char*)(p) - (const char*)0))) #define IS_ALIGNED_64(p) (0 == (7 & ((const char*)(p) - (const char*)0))) #if defined(_MSC_VER) #define ALIGN_ATTR(n) __declspec(align(n)) #elif defined(__GNUC__) #define ALIGN_ATTR(n) __attribute__((aligned (n))) #else #define ALIGN_ATTR(n) /* nothing */ #endif #if defined(_MSC_VER) || defined(__BORLANDC__) #define I64(x) x##ui64 #else #define I64(x) x##ULL #endif #if defined(_MSC_VER) #define RHASH_INLINE __inline #elif defined(__GNUC__) && !defined(__STRICT_ANSI__) #define RHASH_INLINE inline #elif defined(__GNUC__) #define RHASH_INLINE __inline__ #else #define RHASH_INLINE #endif /* define rhash_ctz - count traling zero bits */ #if (defined(__GNUC__) && __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)) || \ (defined(__clang__) && __has_builtin(__builtin_ctz)) /* GCC >= 3.4 or clang */ # define rhash_ctz(x) __builtin_ctz(x) #else unsigned rhash_ctz(unsigned); /* define as function */ #endif void rhash_swap_copy_str_to_u32(void* to, int index, const void* from, size_t length); void rhash_swap_copy_str_to_u64(void* to, int index, const void* from, size_t length); void rhash_swap_copy_u64_to_str(void* to, const void* from, size_t length); void rhash_u32_mem_swap(unsigned* p, int length_in_u32); /* bswap definitions */ #if (defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC__ > 4 || __GNUC_MINOR__ >= 3)) || \ (defined(__clang__) && __has_builtin(__builtin_bswap32) && __has_builtin(__builtin_bswap64)) /* GCC >= 4.3 or clang */ # define bswap_32(x) __builtin_bswap32(x) # define bswap_64(x) __builtin_bswap64(x) #elif (_MSC_VER > 1300) && (defined(CPU_IA32) || defined(CPU_X64)) /* MS VC */ # define bswap_32(x) _byteswap_ulong((unsigned long)x) # define bswap_64(x) _byteswap_uint64((__int64)x) #else /* fallback to generic bswap definition */ static RHASH_INLINE uint32_t bswap_32(uint32_t x) { # if defined(__GNUC__) && defined(CPU_IA32) && !defined(__i386__) && !defined(RHASH_NO_ASM) __asm("bswap\t%0" : "=r" (x) : "0" (x)); /* gcc x86 version */ return x; # else x = ((x << 8) & 0xFF00FF00u) | ((x >> 8) & 0x00FF00FFu); return (x >> 16) | (x << 16); # endif } static RHASH_INLINE uint64_t bswap_64(uint64_t x) { union { uint64_t ll; uint32_t l[2]; } w, r; w.ll = x; r.l[0] = bswap_32(w.l[1]); r.l[1] = bswap_32(w.l[0]); return r.ll; } #endif /* bswap definitions */ #if IS_BIG_ENDIAN # define be2me_32(x) (x) # define be2me_64(x) (x) # define le2me_32(x) bswap_32(x) # define le2me_64(x) bswap_64(x) # define be32_copy(to, index, from, length) memcpy((to) + (index), (from), (length)) # define le32_copy(to, index, from, length) rhash_swap_copy_str_to_u32((to), (index), (from), (length)) # define be64_copy(to, index, from, length) memcpy((to) + (index), (from), (length)) # define le64_copy(to, index, from, length) rhash_swap_copy_str_to_u64((to), (index), (from), (length)) # define me64_to_be_str(to, from, length) memcpy((to), (from), (length)) # define me64_to_le_str(to, from, length) rhash_swap_copy_u64_to_str((to), (from), (length)) #else /* IS_BIG_ENDIAN */ # define be2me_32(x) bswap_32(x) # define be2me_64(x) bswap_64(x) # define le2me_32(x) (x) # define le2me_64(x) (x) # define be32_copy(to, index, from, length) rhash_swap_copy_str_to_u32((to), (index), (from), (length)) # define le32_copy(to, index, from, length) memcpy((to) + (index), (from), (length)) # define be64_copy(to, index, from, length) rhash_swap_copy_str_to_u64((to), (index), (from), (length)) # define le64_copy(to, index, from, length) memcpy((to) + (index), (from), (length)) # define me64_to_be_str(to, from, length) rhash_swap_copy_u64_to_str((to), (from), (length)) # define me64_to_le_str(to, from, length) memcpy((to), (from), (length)) #endif /* IS_BIG_ENDIAN */ /* ROTL/ROTR macros rotate a 32/64-bit word left/right by n bits */ #define ROTL32(dword, n) ((dword) << (n) ^ ((dword) >> (32 - (n)))) #define ROTR32(dword, n) ((dword) >> (n) ^ ((dword) << (32 - (n)))) #define ROTL64(qword, n) ((qword) << (n) ^ ((qword) >> (64 - (n)))) #define ROTR64(qword, n) ((qword) >> (n) ^ ((qword) << (64 - (n)))) #define CPU_FEATURE_SSE4_2 (52) #if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) \ && (defined(CPU_X64) || defined(CPU_IA32)) # define HAS_INTEL_CPUID int has_cpu_feature(unsigned feature_bit); #else # define has_cpu_feature(x) (0) #endif #ifdef __cplusplus } /* extern "C" */ #endif /* __cplusplus */ #endif /* BYTE_ORDER_H */