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/** @file
IA-32/x64 AsmRdRandxx()
Generates random number through CPU RdRand instruction.
Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "BaseLibInternals.h"
/**
Generates a 16-bit random number through RDRAND instruction.
if Rand is NULL, then ASSERT().
@param[out] Rand Buffer pointer to store the random result.
@retval TRUE RDRAND call was successful.
@retval FALSE Failed attempts to call RDRAND.
**/
BOOLEAN
EFIAPI
AsmRdRand16 (
OUT UINT16 *Rand
)
{
ASSERT (Rand != NULL);
return InternalX86RdRand16 (Rand);
}
/**
Generates a 32-bit random number through RDRAND instruction.
if Rand is NULL, then ASSERT().
@param[out] Rand Buffer pointer to store the random result.
@retval TRUE RDRAND call was successful.
@retval FALSE Failed attempts to call RDRAND.
**/
BOOLEAN
EFIAPI
AsmRdRand32 (
OUT UINT32 *Rand
)
{
ASSERT (Rand != NULL);
return InternalX86RdRand32 (Rand);
}
/**
Generates a 64-bit random number through RDRAND instruction.
if Rand is NULL, then ASSERT().
@param[out] Rand Buffer pointer to store the random result.
@retval TRUE RDRAND call was successful.
@retval FALSE Failed attempts to call RDRAND.
**/
BOOLEAN
EFIAPI
AsmRdRand64 (
OUT UINT64 *Rand
)
{
ASSERT (Rand != NULL);
return InternalX86RdRand64 (Rand);
}
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