/** @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); | |
} |