| ;------------------------------------------------------------------------------ | |
| ; | |
| ; 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 |