mirror of https://github.com/acidanthera/audk.git
76 lines
1.9 KiB
NASM
76 lines
1.9 KiB
NASM
;------------------------------------------------------------------------------
|
|
;
|
|
; Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
|
|
; This program and the accompanying materials
|
|
; are licensed and made available under the terms and conditions of the BSD License
|
|
; which accompanies this distribution. The full text of the license may be found at
|
|
; http://opensource.org/licenses/bsd-license.php.
|
|
;
|
|
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
;
|
|
;------------------------------------------------------------------------------
|
|
|
|
.586p
|
|
.model flat, C
|
|
|
|
extern mTopOfApCommonStack:DWORD
|
|
extern ApEntryPointInC:PROC
|
|
|
|
.code
|
|
|
|
;
|
|
; This lock only allows one AP to use the mTopOfApCommonStack stack at a time
|
|
;
|
|
ApStackLock dd 0
|
|
|
|
;.code
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID
|
|
; EFIAPI
|
|
; AsmApEntryPoint (
|
|
; VOID
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
AsmApEntryPoint PROC
|
|
|
|
cli
|
|
AsmApEntryPointAcquireLock:
|
|
lock bts dword ptr [ApStackLock], 0
|
|
pause
|
|
jc AsmApEntryPointAcquireLock
|
|
|
|
mov esp, [mTopOfApCommonStack]
|
|
call ApEntryPointInC
|
|
|
|
cli
|
|
|
|
lock btc dword ptr [ApStackLock], 0
|
|
|
|
mov eax, 100h
|
|
AsmApEntryPointShareLock:
|
|
pause
|
|
dec eax
|
|
jnz AsmApEntryPointShareLock
|
|
|
|
jmp AsmApEntryPoint
|
|
|
|
AsmApEntryPoint ENDP
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID
|
|
; EFIAPI
|
|
; AsmApDoneWithCommonStack (
|
|
; VOID
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
AsmApDoneWithCommonStack PROC PUBLIC
|
|
|
|
lock btc dword ptr [ApStackLock], 0
|
|
ret
|
|
|
|
AsmApDoneWithCommonStack ENDP
|
|
|
|
END
|