MdePkg/Library/BaseCpuLib/Ia32/CpuSleep.c

   1 /** @file
   2   CpuSleep function.
   3
   4   Copyright (c) 2006 - 2007, Intel Corporation<BR>
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  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   _asm {
  31     hlt
  32   }
  33 }
  34