mirror of https://github.com/acidanthera/audk.git
37 lines
792 B
C
37 lines
792 B
C
/** @file
|
|
|
|
Copyright (c) 2014 - 2022, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include <Base.h>
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/FspCommonLib.h>
|
|
|
|
/**
|
|
|
|
Switch the current stack to the previous saved stack.
|
|
|
|
@param[in] NewStack The new stack to be switched.
|
|
|
|
@return OldStack After switching to the saved stack,
|
|
this value will be saved in eax before returning.
|
|
|
|
|
|
**/
|
|
UINTN
|
|
EFIAPI
|
|
SwapStack (
|
|
IN UINTN NewStack
|
|
)
|
|
{
|
|
FSP_GLOBAL_DATA *FspData;
|
|
UINTN OldStack;
|
|
|
|
FspData = GetFspGlobalDataPointer ();
|
|
OldStack = FspData->CoreStack;
|
|
FspData->CoreStack = (UINTN)NewStack;
|
|
return OldStack;
|
|
}
|