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-rw-r--r--Utilities/cmlibrhash/librhash/byte_order.h171
1 files changed, 171 insertions, 0 deletions
diff --git a/Utilities/cmlibrhash/librhash/byte_order.h b/Utilities/cmlibrhash/librhash/byte_order.h
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+++ b/Utilities/cmlibrhash/librhash/byte_order.h
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+/* byte_order.h */
+#ifndef BYTE_ORDER_H
+#define BYTE_ORDER_H
+#include "ustd.h"
+#include <stdlib.h>
+
+#ifdef IN_RHASH
+#include "config.h"
+#endif
+
+#ifdef __GLIBC__
+# include <endian.h>
+#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
+
+
+/* detect CPU endianness */
+#if (defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && \
+ __BYTE_ORDER == __LITTLE_ENDIAN) || \
+ defined(CPU_IA32) || defined(CPU_X64) || \
+ defined(__ia64) || defined(__ia64__) || defined(__alpha__) || defined(_M_ALPHA) || \
+ defined(vax) || defined(MIPSEL) || defined(_ARM_) || defined(__arm__)
+# define CPU_LITTLE_ENDIAN
+# define IS_BIG_ENDIAN 0
+# define IS_LITTLE_ENDIAN 1
+#elif (defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && \
+ __BYTE_ORDER == __BIG_ENDIAN) || \
+ 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 CPU_BIG_ENDIAN
+# define IS_BIG_ENDIAN 1
+# define IS_LITTLE_ENDIAN 0
+#else
+# error "Can't detect CPU architechture"
+#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##LL
+#endif
+
+/* convert a hash flag to index */
+#if __GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) /* GCC < 3.4 */
+# 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);
+
+/* define bswap_32 */
+#if defined(__GNUC__) && defined(CPU_IA32) && !defined(__i386__)
+/* for intel x86 CPU */
+static inline uint32_t bswap_32(uint32_t x) {
+ __asm("bswap\t%0" : "=r" (x) : "0" (x));
+ return x;
+}
+#elif defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC__ > 4 || __GNUC_MINOR__ >= 3)
+/* for GCC >= 4.3 */
+# define bswap_32(x) __builtin_bswap32(x)
+#elif (_MSC_VER > 1300) && (defined(CPU_IA32) || defined(CPU_X64)) /* MS VC */
+# define bswap_32(x) _byteswap_ulong((unsigned long)x)
+#elif !defined(__STRICT_ANSI__)
+/* general bswap_32 definition */
+static inline uint32_t bswap_32(uint32_t x) {
+ x = ((x << 8) & 0xFF00FF00) | ((x >> 8) & 0x00FF00FF);
+ return (x >> 16) | (x << 16);
+}
+#else
+#define bswap_32(x) ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
+ (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
+#endif /* bswap_32 */
+
+#if defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC__ > 4 || __GNUC_MINOR__ >= 3)
+# define bswap_64(x) __builtin_bswap64(x)
+#elif (_MSC_VER > 1300) && (defined(CPU_IA32) || defined(CPU_X64)) /* MS VC */
+# define bswap_64(x) _byteswap_uint64((__int64)x)
+#elif !defined(__STRICT_ANSI__)
+static 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;
+}
+#else
+#error "bswap_64 unsupported"
+#endif
+
+#ifdef CPU_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 /* CPU_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 /* CPU_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))))
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif /* __cplusplus */
+
+#endif /* BYTE_ORDER_H */