mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-26 12:05:36 +01:00
66 lines
1.5 KiB
ArmAsm
66 lines
1.5 KiB
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 Limited. All rights reserved.<BR>
|
|
# SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
#
|
|
#------------------------------------------------------------------------------
|
|
|
|
.text
|
|
.align 5
|
|
|
|
GCC_ASM_EXPORT(InternalSwitchStackAsm)
|
|
GCC_ASM_EXPORT(CpuPause)
|
|
|
|
#/**
|
|
#
|
|
# This allows the caller to switch the stack and goes to the new entry point
|
|
#
|
|
# @param EntryPoint The pointer to the location to enter
|
|
# @param Context Parameter to pass in
|
|
# @param Context2 Parameter2 to pass in
|
|
# @param NewStack New Location of the stack
|
|
#
|
|
# @return Nothing. Goes to the Entry Point passing in the new parameters
|
|
#
|
|
#**/
|
|
#VOID
|
|
#EFIAPI
|
|
#InternalSwitchStackAsm (
|
|
# SWITCH_STACK_ENTRY_POINT EntryPoint,
|
|
# VOID *Context,
|
|
# VOID *Context2,
|
|
# VOID *NewStack
|
|
# );
|
|
#
|
|
ASM_PFX(InternalSwitchStackAsm):
|
|
mov x29, #0
|
|
mov x30, x0
|
|
mov sp, x3
|
|
mov x0, x1
|
|
mov x1, x2
|
|
ret
|
|
|
|
#/**
|
|
#
|
|
# Requests CPU to pause for a short period of time.
|
|
#
|
|
# Requests CPU to pause for a short period of time. Typically used in MP
|
|
# systems to prevent memory starvation while waiting for a spin lock.
|
|
#
|
|
#**/
|
|
#VOID
|
|
#EFIAPI
|
|
#CpuPause (
|
|
# VOID
|
|
# )
|
|
#
|
|
ASM_PFX(CpuPause):
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
ret
|