mirror of https://github.com/acidanthera/audk.git
31 lines
639 B
NASM
31 lines
639 B
NASM
|
;------------------------------------------------------------------------------
|
||
|
|
;
|
||
|
|
; ArmReadIdIsar0() for AArch64
|
||
|
|
;
|
||
|
|
; Copyright (c) 2021, NUVIA Inc. All rights reserved.<BR>
|
||
|
|
;
|
||
|
|
; SPDX-License-Identifier: BSD-2-Clause-Patent
|
||
|
|
;
|
||
|
|
;------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
EXPORT ArmReadIdIsar0
|
||
|
|
AREA BaseLib_LowLevel, CODE, READONLY
|
||
|
|
|
||
|
|
;/**
|
||
|
|
; Reads the ID_AA64ISAR0 Register.
|
||
|
|
;
|
||
|
|
; @return The contents of the ID_AA64ISAR0 register.
|
||
|
|
;
|
||
|
|
;**/
|
||
|
|
;UINT64
|
||
|
|
;EFIAPI
|
||
|
|
;ArmReadIdIsar0 (
|
||
|
|
; VOID
|
||
|
|
; );
|
||
|
|
;
|
||
|
|
ArmReadIdIsar0
|
||
|
|
mrs x0, id_aa64isar0_el1 // Read ID_AA64ISAR0 Register
|
||
|
|
ret
|
||
|
|
|
||
|
|
END
|