blob: c47cdcef54614532b3d32835911935c32b4ed947 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
;------------------------------------------------------------------------------
;
; 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.
;
;------------------------------------------------------------------------------
extern ASM_PFX(mTopOfApCommonStack)
extern ASM_PFX(ApEntryPointInC)
SECTION .data
;
; This lock only allows one AP to use the mTopOfApCommonStack stack at a time
;
ApStackLock:
dd 0
SECTION .text
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; AsmApEntryPoint (
; VOID
; );
;------------------------------------------------------------------------------
global ASM_PFX(AsmApEntryPoint)
ASM_PFX(AsmApEntryPoint):
cli
AsmApEntryPointAcquireLock:
lock bts dword [ApStackLock], 0
pause
jc AsmApEntryPointAcquireLock
mov esp, [ASM_PFX(mTopOfApCommonStack)]
call ASM_PFX(ApEntryPointInC)
cli
lock btc dword [ApStackLock], 0
mov eax, 0x100
AsmApEntryPointShareLock:
pause
dec eax
jnz AsmApEntryPointShareLock
jmp ASM_PFX(AsmApEntryPoint)
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; AsmApDoneWithCommonStack (
; VOID
; );
;------------------------------------------------------------------------------
global ASM_PFX(AsmApDoneWithCommonStack)
ASM_PFX(AsmApDoneWithCommonStack):
lock btc dword [ApStackLock], 0
ret
|
