MdePkg/Library/BaseLib/AArch64/EnableInterrupts.asm

   1 ;------------------------------------------------------------------------------
   2 ;
   3 ; EnableInterrupts() 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   EXPORT EnableInterrupts
  19   AREA BaseLib_LowLevel, CODE, READONLY
  20
  21 DAIF_WR_IRQ_BIT     EQU     (1 << 1)
  22
  23 ;/**
  24 ;  Enables CPU interrupts.
  25 ;
  26 ;**/
  27 ;VOID
  28 ;EFIAPI
  29 ;EnableInterrupts (
  30 ;  VOID
  31 ;  );
  32 ;
  33 EnableInterrupts
  34     msr  daifclr, #DAIF_WR_IRQ_BIT
  35     ret
  36
  37   END