diff options
| author | lgao4 <lgao4@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-12-15 08:27:53 +0000 |
|---|---|---|
| committer | lgao4 <lgao4@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-12-15 08:27:53 +0000 |
| commit | 0249feb8b5656a67330ab76db00429a2edecf6b0 (patch) | |
| tree | 87c702107d168f4733d8bbdc66fb3f80ed3c9672 /EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.asm | |
| parent | c577049aafd5d00f96fe6d136e442da8b7520242 (diff) | |
| download | edk2-platforms-0249feb8b5656a67330ab76db00429a2edecf6b0.tar.xz | |
Fix the issue to clear the high 16-bit of EAX before use it Thunk code.
This patch updates MdePkg BaseLib, EcpPkg EdkIIGlueLib BaseLib and ThunkLib.
Signed-off-by: lgao4
Reviewed-by: rsun3
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12877 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.asm')
| -rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.asm | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.asm b/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.asm index 76c1317469..0a796ed236 100644 --- a/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.asm +++ b/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.asm @@ -1,6 +1,6 @@ ;*****************************************************************************
;*
-;* Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+;* Copyright (c) 2006 - 2011, 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
@@ -141,7 +141,8 @@ __Thunk16 PROC USES ebp ebx esi edi ds es fs gs mov cr4, eax ; disable PAE & PSE
db 67h, 0FFh, 06Ch, 024h, 0FCh ; jmp dword ptr [esp-4]
@@:
- mov eax, ss
+ xor eax, eax
+ mov ax, ss
shl eax, 4
add eax, esp ; eax <- address of 16-bit stack
lss esp, fword ptr (_STK16 ptr [esp + sizeof (IA32_REGS)]).SavedEsp
|