/** @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; | |
} |