/* * Copyright (c) 2016-2020 Positive Technologies, https://www.ptsecurity.com, * Fast Positive Hash. * * Portions Copyright (c) 2010-2020 Leonid Yuriev , * The 1Hippeus project (t1h). * * This software is provided 'as-is', without any express or implied * warranty. In no event will the authors be held liable for any damages * arising from the use of this software. * * Permission is granted to anyone to use this software for any purpose, * including commercial applications, and to alter it and redistribute it * freely, subject to the following restrictions: * * 1. The origin of this software must not be misrepresented; you must not * claim that you wrote the original software. If you use this software * in a product, an acknowledgement in the product documentation would be * appreciated but is not required. * 2. Altered source versions must be plainly marked as such, and must not be * misrepresented as being the original software. * 3. This notice may not be removed or altered from any source distribution. */ /* * t1ha = { Fast Positive Hash, aka "Позитивный Хэш" } * by [Positive Technologies](https://www.ptsecurity.ru) * * Briefly, it is a 64-bit Hash Function: * 1. Created for 64-bit little-endian platforms, in predominantly for x86_64, * but portable and without penalties it can run on any 64-bit CPU. * 2. In most cases up to 15% faster than City64, xxHash, mum-hash, metro-hash * and all others portable hash-functions (which do not use specific * hardware tricks). * 3. Not suitable for cryptography. * * The Future will (be) Positive. Всё будет хорошо. * * ACKNOWLEDGEMENT: * The t1ha was originally developed by Leonid Yuriev (Леонид Юрьев) * for The 1Hippeus project - zerocopy messaging in the spirit of Sparta! */ #pragma once /***************************************************************************** * * PLEASE PAY ATTENTION TO THE FOLLOWING NOTES * about macros definitions which controls t1ha behaviour and/or performance. * * * 1) T1HA_SYS_UNALIGNED_ACCESS = Defines the system/platform/CPU/architecture * abilities for unaligned data access. * * By default, when the T1HA_SYS_UNALIGNED_ACCESS not defined, * it will defined on the basis hardcoded knowledge about of capabilities * of most common CPU architectures. But you could override this * default behavior when build t1ha library itself: * * // To disable unaligned access at all. * #define T1HA_SYS_UNALIGNED_ACCESS 0 * * // To enable unaligned access, but indicate that it significantly slow. * #define T1HA_SYS_UNALIGNED_ACCESS 1 * * // To enable unaligned access, and indicate that it effecient. * #define T1HA_SYS_UNALIGNED_ACCESS 2 * * * 2) T1HA_USE_FAST_ONESHOT_READ = Controls the data reads at the end of buffer. * * When defined to non-zero, t1ha will use 'one shot' method for reading * up to 8 bytes at the end of data. In this case just the one 64-bit read * will be performed even when the available less than 8 bytes. * * This is little bit faster that switching by length of data tail. * Unfortunately this will triggering a false-positive alarms from Valgrind, * AddressSanitizer and other similar tool. * * By default, t1ha defines it to 1, but you could override this * default behavior when build t1ha library itself: * * // For little bit faster and small code. * #define T1HA_USE_FAST_ONESHOT_READ 1 * * // For calmness if doubt. * #define T1HA_USE_FAST_ONESHOT_READ 0 * * * 3) T1HA0_RUNTIME_SELECT = Controls choice fastest function in runtime. * * t1ha library offers the t1ha0() function as the fastest for current CPU. * But actual CPU's features/capabilities and may be significantly different, * especially on x86 platform. Therefore, internally, t1ha0() may require * dynamic dispatching for choice best implementation. * * By default, t1ha enables such runtime choice and (may be) corresponding * indirect calls if it reasonable, but you could override this default * behavior when build t1ha library itself: * * // To enable runtime choice of fastest implementation. * #define T1HA0_RUNTIME_SELECT 1 * * // To disable runtime choice of fastest implementation. * #define T1HA0_RUNTIME_SELECT 0 * * When T1HA0_RUNTIME_SELECT is nonzero the t1ha0_resolve() function could * be used to get actual t1ha0() implementation address at runtime. This is * useful for two cases: * - calling by local pointer-to-function usually is little * bit faster (less overhead) than via a PLT thru the DSO boundary. * - GNU Indirect functions (see below) don't supported by environment * and calling by t1ha0_funcptr is not available and/or expensive. * * 4) T1HA_USE_INDIRECT_FUNCTIONS = Controls usage of GNU Indirect functions. * * In continue of T1HA0_RUNTIME_SELECT the T1HA_USE_INDIRECT_FUNCTIONS * controls usage of ELF indirect functions feature. In general, when * available, this reduces overhead of indirect function's calls though * a DSO-bundary (https://sourceware.org/glibc/wiki/GNU_IFUNC). * * By default, t1ha engage GNU Indirect functions when it available * and useful, but you could override this default behavior when build * t1ha library itself: * * // To enable use of GNU ELF Indirect functions. * #define T1HA_USE_INDIRECT_FUNCTIONS 1 * * // To disable use of GNU ELF Indirect functions. This may be useful * // if the actual toolchain or the system's loader don't support ones. * #define T1HA_USE_INDIRECT_FUNCTIONS 0 * * 5) T1HA0_AESNI_AVAILABLE = Controls AES-NI detection and dispatching on x86. * * In continue of T1HA0_RUNTIME_SELECT the T1HA0_AESNI_AVAILABLE controls * detection and usage of AES-NI CPU's feature. On the other hand, this * requires compiling parts of t1ha library with certain properly options, * and could be difficult or inconvenient in some cases. * * By default, t1ha engade AES-NI for t1ha0() on the x86 platform, but * you could override this default behavior when build t1ha library itself: * * // To disable detection and usage of AES-NI instructions for t1ha0(). * // This may be useful when you unable to build t1ha library properly * // or known that AES-NI will be unavailable at the deploy. * #define T1HA0_AESNI_AVAILABLE 0 * * // To force detection and usage of AES-NI instructions for t1ha0(), * // but I don't known reasons to anybody would need this. * #define T1HA0_AESNI_AVAILABLE 1 * * 6) T1HA0_DISABLED, T1HA1_DISABLED, T1HA2_DISABLED = Controls availability of * t1ha functions. * * In some cases could be useful to import/use only few of t1ha functions * or just the one. So, this definitions allows disable corresponding parts * of t1ha library. * * // To disable t1ha0(), t1ha0_32le(), t1ha0_32be() and all AES-NI. * #define T1HA0_DISABLED * * // To disable t1ha1_le() and t1ha1_be(). * #define T1HA1_DISABLED * * // To disable t1ha2_atonce(), t1ha2_atonce128() and so on. * #define T1HA2_DISABLED * *****************************************************************************/ #define T1HA_VERSION_MAJOR 2 #define T1HA_VERSION_MINOR 1 #define T1HA_VERSION_RELEASE 1 #ifndef __has_attribute #define __has_attribute(x) (0) #endif #ifndef __has_include #define __has_include(x) (0) #endif #ifndef __GNUC_PREREQ #if defined(__GNUC__) && defined(__GNUC_MINOR__) #define __GNUC_PREREQ(maj, min) \ ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) #else #define __GNUC_PREREQ(maj, min) 0 #endif #endif /* __GNUC_PREREQ */ #ifndef __CLANG_PREREQ #ifdef __clang__ #define __CLANG_PREREQ(maj, min) \ ((__clang_major__ << 16) + __clang_minor__ >= ((maj) << 16) + (min)) #else #define __CLANG_PREREQ(maj, min) (0) #endif #endif /* __CLANG_PREREQ */ #ifndef __LCC_PREREQ #ifdef __LCC__ #define __LCC_PREREQ(maj, min) \ ((__LCC__ << 16) + __LCC_MINOR__ >= ((maj) << 16) + (min)) #else #define __LCC_PREREQ(maj, min) (0) #endif #endif /* __LCC_PREREQ */ /*****************************************************************************/ #ifdef _MSC_VER /* Avoid '16' bytes padding added after data member 't1ha_context::total' * and other warnings from std-headers if warning-level > 3. */ #pragma warning(push, 3) #endif #if defined(__cplusplus) && __cplusplus >= 201103L #include #include #include #else #include #include #include #endif /*****************************************************************************/ #if defined(i386) || defined(__386) || defined(__i386) || defined(__i386__) || \ defined(i486) || defined(__i486) || defined(__i486__) || \ defined(i586) | defined(__i586) || defined(__i586__) || defined(i686) || \ defined(__i686) || defined(__i686__) || defined(_M_IX86) || \ defined(_X86_) || defined(__THW_INTEL__) || defined(__I86__) || \ defined(__INTEL__) || defined(__x86_64) || defined(__x86_64__) || \ defined(__amd64__) || defined(__amd64) || defined(_M_X64) || \ defined(_M_AMD64) || defined(__IA32__) || defined(__INTEL__) #ifndef __ia32__ /* LY: define neutral __ia32__ for x86 and x86-64 archs */ #define __ia32__ 1 #endif /* __ia32__ */ #if !defined(__amd64__) && (defined(__x86_64) || defined(__x86_64__) || \ defined(__amd64) || defined(_M_X64)) /* LY: define trusty __amd64__ for all AMD64/x86-64 arch */ #define __amd64__ 1 #endif /* __amd64__ */ #endif /* all x86 */ #if !defined(__BYTE_ORDER__) || !defined(__ORDER_LITTLE_ENDIAN__) || \ !defined(__ORDER_BIG_ENDIAN__) /* *INDENT-OFF* */ /* clang-format off */ #if defined(__GLIBC__) || defined(__GNU_LIBRARY__) || defined(__ANDROID__) || \ defined(HAVE_ENDIAN_H) || __has_include() #include #elif defined(__APPLE__) || defined(__MACH__) || defined(__OpenBSD__) || \ defined(HAVE_MACHINE_ENDIAN_H) || __has_include() #include #elif defined(HAVE_SYS_ISA_DEFS_H) || __has_include() #include #elif (defined(HAVE_SYS_TYPES_H) && defined(HAVE_SYS_ENDIAN_H)) || \ (__has_include() && __has_include()) #include #include #elif defined(__bsdi__) || defined(__DragonFly__) || defined(__FreeBSD__) || \ defined(__NETBSD__) || defined(__NetBSD__) || \ defined(HAVE_SYS_PARAM_H) || __has_include() #include #endif /* OS */ /* *INDENT-ON* */ /* clang-format on */ #if defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && defined(__BIG_ENDIAN) #define __ORDER_LITTLE_ENDIAN__ __LITTLE_ENDIAN #define __ORDER_BIG_ENDIAN__ __BIG_ENDIAN #define __BYTE_ORDER__ __BYTE_ORDER #elif defined(_BYTE_ORDER) && defined(_LITTLE_ENDIAN) && defined(_BIG_ENDIAN) #define __ORDER_LITTLE_ENDIAN__ _LITTLE_ENDIAN #define __ORDER_BIG_ENDIAN__ _BIG_ENDIAN #define __BYTE_ORDER__ _BYTE_ORDER #else #define __ORDER_LITTLE_ENDIAN__ 1234 #define __ORDER_BIG_ENDIAN__ 4321 #if defined(__LITTLE_ENDIAN__) || \ (defined(_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN)) || \ defined(__ARMEL__) || defined(__THUMBEL__) || \ defined(__AARCH64EL__) || defined(__MIPSEL__) || defined(_MIPSEL) || \ defined(__MIPSEL) || defined(_M_ARM) || defined(_M_ARM64) || \ defined(__e2k__) || defined(__elbrus_4c__) || \ defined(__elbrus_8c__) || defined(__bfin__) || defined(__BFIN__) || \ defined(__ia64__) || defined(_IA64) || defined(__IA64__) || \ defined(__ia64) || defined(_M_IA64) || defined(__itanium__) || \ defined(__ia32__) || defined(__CYGWIN__) || defined(_WIN64) || \ defined(_WIN32) || defined(__TOS_WIN__) || defined(__WINDOWS__) #define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__ #elif defined(__BIG_ENDIAN__) || \ (defined(_BIG_ENDIAN) && !defined(_LITTLE_ENDIAN)) || \ defined(__ARMEB__) || defined(__THUMBEB__) || \ defined(__AARCH64EB__) || defined(__MIPSEB__) || defined(_MIPSEB) || \ defined(__MIPSEB) || defined(__m68k__) || defined(M68000) || \ defined(__hppa__) || defined(__hppa) || defined(__HPPA__) || \ defined(__sparc__) || defined(__sparc) || defined(__370__) || \ defined(__THW_370__) || defined(__s390__) || defined(__s390x__) || \ defined(__SYSC_ZARCH__) #define __BYTE_ORDER__ __ORDER_BIG_ENDIAN__ #else #error __BYTE_ORDER__ should be defined. #endif /* Arch */ #endif #endif /* __BYTE_ORDER__ || __ORDER_LITTLE_ENDIAN__ || __ORDER_BIG_ENDIAN__ */ /*****************************************************************************/ #ifndef __dll_export #if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__) #if defined(__GNUC__) || __has_attribute(dllexport) #define __dll_export __attribute__((dllexport)) #else #define __dll_export __declspec(dllexport) #endif #elif defined(__GNUC__) || __has_attribute(__visibility__) #define __dll_export __attribute__((__visibility__("default"))) #else #define __dll_export #endif #endif /* __dll_export */ #ifndef __dll_import #if defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__) #if defined(__GNUC__) || __has_attribute(dllimport) #define __dll_import __attribute__((dllimport)) #else #define __dll_import __declspec(dllimport) #endif #elif defined(__GNUC__) || __has_attribute(__visibility__) #define __dll_import __attribute__((__visibility__("default"))) #else #define __dll_import #endif #endif /* __dll_import */ #ifndef __force_inline #ifdef _MSC_VER #define __force_inline __forceinline #elif __GNUC_PREREQ(3, 2) || __has_attribute(__always_inline__) #define __force_inline __inline __attribute__((__always_inline__)) #else #define __force_inline __inline #endif #endif /* __force_inline */ #ifndef T1HA_API #if defined(t1ha_EXPORTS) #define T1HA_API __dll_export #elif defined(t1ha_IMPORTS) #define T1HA_API __dll_import #else #define T1HA_API #endif #endif /* T1HA_API */ #if defined(_MSC_VER) && defined(__ia32__) #define T1HA_ALIGN_PREFIX __declspec(align(32)) /* required only for SIMD */ #else #define T1HA_ALIGN_PREFIX #endif /* _MSC_VER */ #if defined(__GNUC__) && defined(__ia32__) #define T1HA_ALIGN_SUFFIX \ __attribute__((__aligned__(32))) /* required only for SIMD */ #else #define T1HA_ALIGN_SUFFIX #endif /* GCC x86 */ #ifndef T1HA_USE_INDIRECT_FUNCTIONS /* GNU ELF indirect functions usage control. For more info please see * https://en.wikipedia.org/wiki/Executable_and_Linkable_Format * and https://sourceware.org/glibc/wiki/GNU_IFUNC */ #if defined(__ELF__) && defined(__amd64__) && \ (__has_attribute(__ifunc__) || \ (!defined(__clang__) && defined(__GNUC__) && __GNUC__ >= 4 && \ !defined(__SANITIZE_ADDRESS__) && !defined(__SSP_ALL__))) /* Enable gnu_indirect_function by default if : * - ELF AND x86_64 * - attribute(__ifunc__) is available OR * GCC >= 4 WITHOUT -fsanitize=address NOR -fstack-protector-all */ #define T1HA_USE_INDIRECT_FUNCTIONS 1 #else #define T1HA_USE_INDIRECT_FUNCTIONS 0 #endif #endif /* T1HA_USE_INDIRECT_FUNCTIONS */ #if __GNUC_PREREQ(4, 0) #pragma GCC visibility push(hidden) #endif /* __GNUC_PREREQ(4,0) */ #ifdef __cplusplus extern "C" { #endif typedef union T1HA_ALIGN_PREFIX t1ha_state256 { uint8_t bytes[32]; uint32_t u32[8]; uint64_t u64[4]; struct { uint64_t a, b, c, d; } n; } t1ha_state256_t T1HA_ALIGN_SUFFIX; typedef struct t1ha_context { t1ha_state256_t state; t1ha_state256_t buffer; size_t partial; uint64_t total; } t1ha_context_t; #ifdef _MSC_VER #pragma warning(pop) #endif /****************************************************************************** * * Self-testing API. * * Unfortunately, some compilers (exactly only Microsoft Visual C/C++) has * a bugs which leads t1ha-functions to produce wrong results. This API allows * check the correctness of the actual code in runtime. * * All check-functions returns 0 on success, or -1 in case the corresponding * hash-function failed verification. PLEASE, always perform such checking at * initialization of your code, if you using MSVC or other troubleful compilers. */ T1HA_API int t1ha_selfcheck__all_enabled(void); #ifndef T1HA2_DISABLED T1HA_API int t1ha_selfcheck__t1ha2_atonce(void); T1HA_API int t1ha_selfcheck__t1ha2_atonce128(void); T1HA_API int t1ha_selfcheck__t1ha2_stream(void); T1HA_API int t1ha_selfcheck__t1ha2(void); #endif /* T1HA2_DISABLED */ #ifndef T1HA1_DISABLED T1HA_API int t1ha_selfcheck__t1ha1_le(void); T1HA_API int t1ha_selfcheck__t1ha1_be(void); T1HA_API int t1ha_selfcheck__t1ha1(void); #endif /* T1HA1_DISABLED */ #ifndef T1HA0_DISABLED T1HA_API int t1ha_selfcheck__t1ha0_32le(void); T1HA_API int t1ha_selfcheck__t1ha0_32be(void); T1HA_API int t1ha_selfcheck__t1ha0(void); /* Define T1HA0_AESNI_AVAILABLE to 0 for disable AES-NI support. */ #ifndef T1HA0_AESNI_AVAILABLE #if defined(__e2k__) || \ (defined(__ia32__) && (!defined(_M_IX86) || _MSC_VER > 1800)) #define T1HA0_AESNI_AVAILABLE 1 #else #define T1HA0_AESNI_AVAILABLE 0 #endif #endif /* ifndef T1HA0_AESNI_AVAILABLE */ #if T1HA0_AESNI_AVAILABLE T1HA_API int t1ha_selfcheck__t1ha0_ia32aes_noavx(void); T1HA_API int t1ha_selfcheck__t1ha0_ia32aes_avx(void); #ifndef __e2k__ T1HA_API int t1ha_selfcheck__t1ha0_ia32aes_avx2(void); #endif #endif /* if T1HA0_AESNI_AVAILABLE */ #endif /* T1HA0_DISABLED */ /****************************************************************************** * * t1ha2 = 64 and 128-bit, SLIGHTLY MORE ATTENTION FOR QUALITY AND STRENGTH. * * - The recommended version of "Fast Positive Hash" with good quality * for checksum, hash tables and fingerprinting. * - Portable and extremely efficiency on modern 64-bit CPUs. * Designed for 64-bit little-endian platforms, * in other cases will runs slowly. * - Great quality of hashing and still faster than other non-t1ha hashes. * Provides streaming mode and 128-bit result. * * Note: Due performance reason 64- and 128-bit results are completely * different each other, i.e. 64-bit result is NOT any part of 128-bit. */ #ifndef T1HA2_DISABLED /* The at-once variant with 64-bit result */ T1HA_API uint64_t t1ha2_atonce(const void *data, size_t length, uint64_t seed); /* The at-once variant with 128-bit result. * Argument `extra_result` is NOT optional and MUST be valid. * The high 64-bit part of 128-bit hash will be always unconditionally * stored to the address given by `extra_result` argument. */ T1HA_API uint64_t t1ha2_atonce128(uint64_t *__restrict extra_result, const void *__restrict data, size_t length, uint64_t seed); /* The init/update/final trinity for streaming. * Return 64 or 128-bit result depentently from `extra_result` argument. */ T1HA_API void t1ha2_init(t1ha_context_t *ctx, uint64_t seed_x, uint64_t seed_y); T1HA_API void t1ha2_update(t1ha_context_t *__restrict ctx, const void *__restrict data, size_t length); /* Argument `extra_result` is optional and MAY be NULL. * - If `extra_result` is NOT NULL then the 128-bit hash will be calculated, * and high 64-bit part of it will be stored to the address given * by `extra_result` argument. * - Otherwise the 64-bit hash will be calculated * and returned from function directly. * * Note: Due performance reason 64- and 128-bit results are completely * different each other, i.e. 64-bit result is NOT any part of 128-bit. */ T1HA_API uint64_t t1ha2_final(t1ha_context_t *__restrict ctx, uint64_t *__restrict extra_result /* optional */); #endif /* T1HA2_DISABLED */ /****************************************************************************** * * t1ha1 = 64-bit, BASELINE FAST PORTABLE HASH: * * - Runs faster on 64-bit platforms in other cases may runs slowly. * - Portable and stable, returns same 64-bit result * on all architectures and CPUs. * - Unfortunately it fails the "strict avalanche criteria", * see test results at https://github.com/demerphq/smhasher. * * This flaw is insignificant for the t1ha1() purposes and imperceptible * from a practical point of view. * However, nowadays this issue has resolved in the next t1ha2(), * that was initially planned to providing a bit more quality. */ #ifndef T1HA1_DISABLED /* The little-endian variant. */ T1HA_API uint64_t t1ha1_le(const void *data, size_t length, uint64_t seed); /* The big-endian variant. */ T1HA_API uint64_t t1ha1_be(const void *data, size_t length, uint64_t seed); #endif /* T1HA1_DISABLED */ /****************************************************************************** * * t1ha0 = 64-bit, JUST ONLY FASTER: * * - Provides fast-as-possible hashing for current CPU, including * 32-bit systems and engaging the available hardware acceleration. * - It is a facade that selects most quick-and-dirty hash * for the current processor. For instance, on IA32 (x86) actual function * will be selected in runtime, depending on current CPU capabilities * * BE CAREFUL!!! THIS IS MEANS: * * 1. The quality of hash is a subject for tradeoffs with performance. * So, the quality and strength of t1ha0() may be lower than t1ha1(), * especially on 32-bit targets, but then much faster. * However, guaranteed that it passes all SMHasher tests. * * 2. No warranty that the hash result will be same for particular * key on another machine or another version of libt1ha. * * Briefly, such hash-results and their derivatives, should be * used only in runtime, but should not be persist or transferred * over a network. * * * When T1HA0_RUNTIME_SELECT is nonzero the t1ha0_resolve() function could * be used to get actual t1ha0() implementation address at runtime. This is * useful for two cases: * - calling by local pointer-to-function usually is little * bit faster (less overhead) than via a PLT thru the DSO boundary. * - GNU Indirect functions (see below) don't supported by environment * and calling by t1ha0_funcptr is not available and/or expensive. */ #ifndef T1HA0_DISABLED /* The little-endian variant for 32-bit CPU. */ uint64_t t1ha0_32le(const void *data, size_t length, uint64_t seed); /* The big-endian variant for 32-bit CPU. */ uint64_t t1ha0_32be(const void *data, size_t length, uint64_t seed); /* Define T1HA0_AESNI_AVAILABLE to 0 for disable AES-NI support. */ #ifndef T1HA0_AESNI_AVAILABLE #if defined(__e2k__) || \ (defined(__ia32__) && (!defined(_M_IX86) || _MSC_VER > 1800)) #define T1HA0_AESNI_AVAILABLE 1 #else #define T1HA0_AESNI_AVAILABLE 0 #endif #endif /* T1HA0_AESNI_AVAILABLE */ /* Define T1HA0_RUNTIME_SELECT to 0 for disable dispatching t1ha0 at runtime. */ #ifndef T1HA0_RUNTIME_SELECT #if T1HA0_AESNI_AVAILABLE && !defined(__e2k__) #define T1HA0_RUNTIME_SELECT 1 #else #define T1HA0_RUNTIME_SELECT 0 #endif #endif /* T1HA0_RUNTIME_SELECT */ #if !T1HA0_RUNTIME_SELECT && !defined(T1HA0_USE_DEFINE) #if defined(__LCC__) #define T1HA0_USE_DEFINE 1 #else #define T1HA0_USE_DEFINE 0 #endif #endif /* T1HA0_USE_DEFINE */ #if T1HA0_AESNI_AVAILABLE uint64_t t1ha0_ia32aes_noavx(const void *data, size_t length, uint64_t seed); uint64_t t1ha0_ia32aes_avx(const void *data, size_t length, uint64_t seed); #ifndef __e2k__ uint64_t t1ha0_ia32aes_avx2(const void *data, size_t length, uint64_t seed); #endif #endif /* T1HA0_AESNI_AVAILABLE */ #if T1HA0_RUNTIME_SELECT typedef uint64_t (*t1ha0_function_t)(const void *, size_t, uint64_t); T1HA_API t1ha0_function_t t1ha0_resolve(void); #if T1HA_USE_INDIRECT_FUNCTIONS T1HA_API uint64_t t1ha0(const void *data, size_t length, uint64_t seed); #else /* Otherwise function pointer will be used. * Unfortunately this may cause some overhead calling. */ T1HA_API extern uint64_t (*t1ha0_funcptr)(const void *data, size_t length, uint64_t seed); static __force_inline uint64_t t1ha0(const void *data, size_t length, uint64_t seed) { return t1ha0_funcptr(data, length, seed); } #endif /* T1HA_USE_INDIRECT_FUNCTIONS */ #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ #if T1HA0_USE_DEFINE #if (UINTPTR_MAX > 0xffffFFFFul || ULONG_MAX > 0xffffFFFFul) && \ (!defined(T1HA1_DISABLED) || !defined(T1HA2_DISABLED)) #if defined(T1HA1_DISABLED) #define t1ha0 t1ha2_atonce #else #define t1ha0 t1ha1_be #endif /* T1HA1_DISABLED */ #else /* 32/64 */ #define t1ha0 t1ha0_32be #endif /* 32/64 */ #else /* T1HA0_USE_DEFINE */ static __force_inline uint64_t t1ha0(const void *data, size_t length, uint64_t seed) { #if (UINTPTR_MAX > 0xffffFFFFul || ULONG_MAX > 0xffffFFFFul) && \ (!defined(T1HA1_DISABLED) || !defined(T1HA2_DISABLED)) #if defined(T1HA1_DISABLED) return t1ha2_atonce(data, length, seed); #else return t1ha1_be(data, length, seed); #endif /* T1HA1_DISABLED */ #else /* 32/64 */ return t1ha0_32be(data, length, seed); #endif /* 32/64 */ } #endif /* !T1HA0_USE_DEFINE */ #else /* !T1HA0_RUNTIME_SELECT && __BYTE_ORDER__ != __ORDER_BIG_ENDIAN__ */ #if T1HA0_USE_DEFINE #if (UINTPTR_MAX > 0xffffFFFFul || ULONG_MAX > 0xffffFFFFul) && \ (!defined(T1HA1_DISABLED) || !defined(T1HA2_DISABLED)) #if defined(T1HA1_DISABLED) #define t1ha0 t1ha2_atonce #else #define t1ha0 t1ha1_le #endif /* T1HA1_DISABLED */ #else /* 32/64 */ #define t1ha0 t1ha0_32le #endif /* 32/64 */ #else static __force_inline uint64_t t1ha0(const void *data, size_t length, uint64_t seed) { #if (UINTPTR_MAX > 0xffffFFFFul || ULONG_MAX > 0xffffFFFFul) && \ (!defined(T1HA1_DISABLED) || !defined(T1HA2_DISABLED)) #if defined(T1HA1_DISABLED) return t1ha2_atonce(data, length, seed); #else return t1ha1_le(data, length, seed); #endif /* T1HA1_DISABLED */ #else /* 32/64 */ return t1ha0_32le(data, length, seed); #endif /* 32/64 */ } #endif /* !T1HA0_USE_DEFINE */ #endif /* !T1HA0_RUNTIME_SELECT */ #endif /* T1HA0_DISABLED */ #ifdef __cplusplus } #endif #if __GNUC_PREREQ(4, 0) #pragma GCC visibility pop #endif /* __GNUC_PREREQ(4,0) */