2009-08-19 16:02:07 +02:00
|
|
|
;------------------------------------------------------------------------------
|
|
|
|
|
;
|
|
|
|
|
; CpuPause() for ARM
|
|
|
|
|
;
|
2010-04-23 18:00:47 +02:00
|
|
|
; Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
|
|
|
|
|
; Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
|
|
|
|
|
; This program and the accompanying materials
|
2009-08-19 16:02:07 +02:00
|
|
|
; are licensed and made available under the terms and conditions of the BSD License
|
|
|
|
|
; which accompanies this distribution. The full text of the license may be found at
|
2010-06-11 02:02:51 +02:00
|
|
|
; http://opensource.org/licenses/bsd-license.php.
|
2009-08-19 16:02:07 +02:00
|
|
|
;
|
|
|
|
|
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
|
|
|
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
|
;
|
|
|
|
|
;------------------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
EXPORT CpuPause
|
|
|
|
|
AREA cpu_pause, CODE, READONLY
|
|
|
|
|
|
|
|
|
|
;/**
|
|
|
|
|
; Requests CPU to pause for a short period of time.
|
|
|
|
|
;
|
|
|
|
|
; Requests CPU to pause for a short period of time. Typically used in MP
|
|
|
|
|
; systems to prevent memory starvation while waiting for a spin lock.
|
|
|
|
|
;
|
|
|
|
|
;**/
|
|
|
|
|
;VOID
|
|
|
|
|
;EFIAPI
|
|
|
|
|
;CpuPause (
|
|
|
|
|
; VOID
|
|
|
|
|
; );
|
|
|
|
|
;
|
|
|
|
|
CpuPause
|
|
|
|
|
NOP
|
|
|
|
|
NOP
|
|
|
|
|
NOP
|
|
|
|
|
NOP
|
|
|
|
|
NOP
|
|
|
|
|
BX LR
|
|
|
|
|
|
|
|
|
|
END
|
