MdePkg/Library/BaseCpuLib/Ia32/CpuSleepGcc.c


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/** @file
  CpuSleep function for Ia32/X64 GCC.

  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
  Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

/**
  Places the CPU in a sleep state until an interrupt is received.

  Places the CPU in a sleep state until an interrupt is received. If interrupts
  are disabled prior to calling this function, then the CPU will be placed in a
  sleep state indefinitely.

**/
VOID
EFIAPI
CpuSleep (
  VOID
  )
{
  __asm__ __volatile__ ("hlt"::: "memory");
}