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;------------------------------------------------------------------------------
;
; ArmRndr() for AArch64
;
; Copyright (c) 2021, NUVIA Inc. All rights reserved.<BR>
;
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
;------------------------------------------------------------------------------
#include "BaseRngLibInternals.h"
EXPORT ArmRndr
AREA BaseLib_LowLevel, CODE, READONLY
;/**
; Generates a random number using RNDR.
; Returns TRUE on success; FALSE on failure.
;
; @param[out] Rand Buffer pointer to store the 64-bit random value.
;
; @retval TRUE Random number generated successfully.
; @retval FALSE Failed to generate the random number.
;
;**/
;BOOLEAN
;EFIAPI
;ArmRndr (
; OUT UINT64 *Rand
; );
;
ArmRndr
mrs x1, RNDR
str x1, [x0]
cset x0, ne // RNDR sets NZCV to 0b0100 on failure
ret
END
|
