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;------------------------------------------------------------------------------
;
; 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.
;
;------------------------------------------------------------------------------
.686
.xmm
.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
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