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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.
;
;------------------------------------------------------------------------------
#include <Base.h>
extern ASM_PFX(mTopOfApCommonStack):QWORD
extern ASM_PFX(ApEntryPointInC):PROC
.data
;
; This lock only allows one AP to use the mTopOfApCommonStack stack at a time
;
ApStackLock:
dd 0
.code
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; AsmApEntryPoint (
; VOID
; );
;------------------------------------------------------------------------------
ASM_PFX(AsmApEntryPoint) PROC PUBLIC
cli
AsmApEntryPointAcquireLock:
lock bts dword ptr [ApStackLock], 0
pause
jc AsmApEntryPointAcquireLock
mov rsp, [ASM_PFX(mTopOfApCommonStack)]
call ASM_PFX(ApEntryPointInC)
cli
lock btc dword ptr [ApStackLock], 0
mov eax, 100h
AsmApEntryPointShareLock:
pause
dec eax
jnz AsmApEntryPointShareLock
jmp ASM_PFX(AsmApEntryPoint)
ASM_PFX(AsmApEntryPoint) ENDP
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; AsmApDoneWithCommonStack (
; VOID
; );
;------------------------------------------------------------------------------
ASM_PFX(AsmApDoneWithCommonStack) PROC PUBLIC
lock btc dword ptr [ApStackLock], 0
ret
ASM_PFX(AsmApDoneWithCommonStack) ENDP
END
|
