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/** @file
Copyright (c) 2014 - 2020, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _FSP_SWITCH_STACK_LIB_H_
#define _FSP_SWITCH_STACK_LIB_H_
/**
This function will switch the current stack to the previous saved stack.
Before calling the previous stack has to be set in FSP_GLOBAL_DATA.CoreStack.
EIP
FLAGS 16 bit FLAGS 16 bit
EDI
ESI
EBP
ESP
EBX
EDX
ECX
EAX
DWORD IDT base1
StackPointer: DWORD IDT base2
@return ReturnKey After switching to the saved stack,
this value will be saved in eax before returning.
**/
EFI_STATUS
EFIAPI
Pei2LoaderSwitchStack (
VOID
);
/**
This function is equivalent to Pei2LoaderSwitchStack () but just indicates
the stack after switched is FSP stack.
@return ReturnKey After switching to the saved stack,
this value will be saved in eax before returning.
**/
EFI_STATUS
EFIAPI
Loader2PeiSwitchStack (
VOID
);
#endif
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