MdePkg/Library/BaseLib/AArch64/DisableInterrupts.asm

   1 ;------------------------------------------------------------------------------
   2 ;
   3 ; DisableInterrupts() for AArch64
   4 ;
   5 ; Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
   6 ; Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   7 ; Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
   8 ; SPDX-License-Identifier: BSD-2-Clause-Patent
   9 ;
  10 ;------------------------------------------------------------------------------
  11
  12   EXPORT DisableInterrupts
  13   AREA BaseLib_LowLevel, CODE, READONLY
  14
  15 DAIF_WR_IRQ_BIT     EQU     (1 << 1)
  16
  17 ;/**
  18 ;  Disables CPU interrupts.
  19 ;
  20 ;**/
  21 ;VOID
  22 ;EFIAPI
  23 ;DisableInterrupts (
  24 ;  VOID
  25 ;  );
  26 ;
  27 DisableInterrupts
  28     msr  daifset, #DAIF_WR_IRQ_BIT
  29     ret
  30
  31   END