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/*===---- 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 */