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      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 # This program and the accompanying materials
      9 # are licensed and made available under the terms and conditions of the BSD License
     10 # which accompanies this distribution.  The full text of the license may be found at
     11 # http://opensource.org/licenses/bsd-license.php.
     12 #
     13 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
     14 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
     15 #
     16 #------------------------------------------------------------------------------
     17 
     18 .text
     19 .p2align 2
     20 GCC_ASM_EXPORT(DisableInterrupts)
     21 
     22 .set DAIF_WR_IRQ_BIT,   (1 << 1)
     23 
     24 #/**
     25 #  Disables CPU interrupts.
     26 #
     27 #**/
     28 #VOID
     29 #EFIAPI
     30 #DisableInterrupts (
     31 #  VOID
     32 #  );
     33 #
     34 ASM_PFX(DisableInterrupts):
     35    msr  daifset, #DAIF_WR_IRQ_BIT
     36    ret
     37