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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>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#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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