a9d7090fc2
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Olivier Martin <olivier.martin@arm.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14182 6f19259b-4bc3-4df7-8a09-765794883524
39 lines
1.2 KiB
NASM
39 lines
1.2 KiB
NASM
;------------------------------------------------------------------------------
|
|
;
|
|
; 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
|
|
; 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
|
|
; http://opensource.org/licenses/bsd-license.php.
|
|
;
|
|
; 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 SecSwitchStack
|
|
|
|
AREA Switch_Stack, CODE, READONLY
|
|
|
|
;/**
|
|
; This allows the caller to switch the stack and return
|
|
;
|
|
; @param StackDelta Signed amount by which to modify the stack pointer
|
|
;
|
|
; @return Nothing. Goes to the Entry Point passing in the new parameters
|
|
;
|
|
;**/
|
|
;VOID
|
|
;EFIAPI
|
|
;SecSwitchStack (
|
|
; VOID *StackDelta
|
|
; );
|
|
;
|
|
SecSwitchStack
|
|
MOV R1, SP
|
|
ADD R1, R0, R1
|
|
MOV SP, R1
|
|
BX LR
|
|
END
|