MdePkg/Library/BaseCpuLib/AArch64/CpuSleep.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # CpuSleep() 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 .align 3
  14 GCC_ASM_EXPORT(CpuSleep)
  15
  16 #/**
  17 #  Places the CPU in a sleep state until an interrupt is received.
  18 #
  19 #  Places the CPU in a sleep state until an interrupt is received. If interrupts
  20 #  are disabled prior to calling this function, then the CPU will be placed in a
  21 #  sleep state indefinitely.
  22 #
  23 #**/
  24 #VOID
  25 #EFIAPI
  26 #CpuSleep (
  27 #  VOID
  28 #  );
  29 #
  30
  31 ASM_PFX(CpuSleep):
  32     wfi
  33     ret