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|
;------------------------------------------------------------------------------
;
; 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
;
;------------------------------------------------------------------------------
EXPORT InternalSwitchStackAsm
EXPORT CpuPause
AREA BaseLib_LowLevel, CODE, READONLY
;/**
;
; 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
; );
;
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
; )
;
CpuPause
nop
nop
nop
nop
nop
ret
END
|
