MdePkg/Library/BaseLib/AArch64/EnableInterrupts.S

   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 # SPDX-License-Identifier: BSD-2-Clause-Patent
   9 #
  10 #------------------------------------------------------------------------------
  11
  12 .text
  13 .p2align 2
  14 GCC_ASM_EXPORT(EnableInterrupts)
  15
  16 .set DAIF_WR_IRQ_BIT,   (1 << 1)
  17
  18 #/**
  19 #  Enables CPU interrupts.
  20 #
  21 #**/
  22 #VOID
  23 #EFIAPI
  24 #EnableInterrupts (
  25 #  VOID
  26 #  );
  27 #
  28 ASM_PFX(EnableInterrupts):
  29     msr  daifclr, #DAIF_WR_IRQ_BIT
  30     ret