audk/ArmPlatformPkg/PrePeiCore/AArch64/SwitchStack.S

33 lines
875 B
ArmAsm

#------------------------------------------------------------------------------
#
# 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