MdePkg/Library/CpuLib/Ia32/CpuPause.c

   1 /** @file
   2   CpuPause 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 pause state until an interrupt is
  18   received.
  19
  20   Places the CPU in a pause state until an interrupt is
  21   received. If interrupts are disabled prior to calling this
  22   function, then the CPU will be placed in a pause state
  23   indefinitely.
  24
  25 **/
  26 VOID
  27 EFIAPI
  28 CpuPause (
  29   VOID
  30   )
  31 {
  32   _asm {
  33     pause
  34   }
  35 }
  36