| /*===---- rdseedintrin.h - RDSEED intrinsics -------------------------------=== |
| * |
| * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| * See https://llvm.org/LICENSE.txt for license information. |
| * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| * |
| *===-----------------------------------------------------------------------=== |
| */ |
| |
| #ifndef __IMMINTRIN_H |
| #error "Never use <rdseedintrin.h> directly; include <immintrin.h> instead." |
| #endif |
| |
| #ifndef __RDSEEDINTRIN_H |
| #define __RDSEEDINTRIN_H |
| |
| /* Define the default attributes for the functions in this file. */ |
| #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("rdseed"))) |
| |
| /// Stores a hardware-generated 16-bit random value in the memory at \a __p. |
| /// |
| /// The random number generator complies with NIST SP800-90B and SP800-90C. |
| /// |
| /// \code{.operation} |
| /// IF HW_NRND_GEN.ready == 1 |
| /// Store16(__p, HW_NRND_GEN.data) |
| /// result := 1 |
| /// ELSE |
| /// Store16(__p, 0) |
| /// result := 0 |
| /// END |
| /// \endcode |
| /// |
| /// \headerfile <immintrin.h> |
| /// |
| /// This intrinsic corresponds to the \c RDSEED instruction. |
| /// |
| /// \param __p |
| /// Pointer to memory for storing the 16-bit random number. |
| /// \returns 1 if a random number was generated, 0 if not. |
| static __inline__ int __DEFAULT_FN_ATTRS |
| _rdseed16_step(unsigned short *__p) |
| { |
| return (int) __builtin_ia32_rdseed16_step(__p); |
| } |
| |
| /// Stores a hardware-generated 32-bit random value in the memory at \a __p. |
| /// |
| /// The random number generator complies with NIST SP800-90B and SP800-90C. |
| /// |
| /// \code{.operation} |
| /// IF HW_NRND_GEN.ready == 1 |
| /// Store32(__p, HW_NRND_GEN.data) |
| /// result := 1 |
| /// ELSE |
| /// Store32(__p, 0) |
| /// result := 0 |
| /// END |
| /// \endcode |
| /// |
| /// \headerfile <immintrin.h> |
| /// |
| /// This intrinsic corresponds to the \c RDSEED instruction. |
| /// |
| /// \param __p |
| /// Pointer to memory for storing the 32-bit random number. |
| /// \returns 1 if a random number was generated, 0 if not. |
| static __inline__ int __DEFAULT_FN_ATTRS |
| _rdseed32_step(unsigned int *__p) |
| { |
| return (int) __builtin_ia32_rdseed32_step(__p); |
| } |
| |
| #ifdef __x86_64__ |
| /// Stores a hardware-generated 64-bit random value in the memory at \a __p. |
| /// |
| /// The random number generator complies with NIST SP800-90B and SP800-90C. |
| /// |
| /// \code{.operation} |
| /// IF HW_NRND_GEN.ready == 1 |
| /// Store64(__p, HW_NRND_GEN.data) |
| /// result := 1 |
| /// ELSE |
| /// Store64(__p, 0) |
| /// result := 0 |
| /// END |
| /// \endcode |
| /// |
| /// \headerfile <immintrin.h> |
| /// |
| /// This intrinsic corresponds to the \c RDSEED instruction. |
| /// |
| /// \param __p |
| /// Pointer to memory for storing the 64-bit random number. |
| /// \returns 1 if a random number was generated, 0 if not. |
| static __inline__ int __DEFAULT_FN_ATTRS |
| _rdseed64_step(unsigned long long *__p) |
| { |
| return (int) __builtin_ia32_rdseed64_step(__p); |
| } |
| #endif |
| |
| #undef __DEFAULT_FN_ATTRS |
| |
| #endif /* __RDSEEDINTRIN_H */ |