audk/ArmPlatformPkg/PrePeiCore/AArch64/SwitchStack.S

#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
# Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
#------------------------------------------------------------------------------

#include <AsmMacroIoLibV8.h>

#/**
#  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
#  )#
#
ASM_FUNC(SecSwitchStack)
    mov   x1, sp
    add   x1, x0, x1
    mov   sp, x1
    ret