mirror of
https://github.com/ziglang/zig.git
synced 2024-11-14 16:13:24 +00:00
106 lines
2.9 KiB
C
Vendored
106 lines
2.9 KiB
C
Vendored
/*===---- 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 */
|