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 | |
| 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')
4 files changed, 8 insertions, 6 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.S b/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.S index 55415d8703..cf7776a6a3 100644 --- a/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.S +++ b/EdkCompatibilityPkg/Foundation/Library/Thunk16/Ia32/Thunk16.S @@ -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
@@ -116,7 +116,8 @@ L_16Bit: .byte 0xfc
L_Lable1:
- movl %ss,%eax
+ xor %eax,%eax
+ movw %ss,%ax
shl $0x4,%eax
add %esp,%eax
lss 0x3c(%esp),%esp
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
diff --git a/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Thunk16.S b/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Thunk16.S index 7328ab764d..f77388d811 100644 --- a/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Thunk16.S +++ b/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Thunk16.S @@ -148,7 +148,7 @@ Label_16Bit: Label:
xor %rax,%rax
- movl %ss,%eax
+ movw %ss,%ax
shl $0x4,%eax
add %esp,%eax
mov %r15,%rsp
diff --git a/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Thunk16.asm b/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Thunk16.asm index 0638d5faa8..6b74bbe7cb 100644 --- a/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Thunk16.asm +++ b/EdkCompatibilityPkg/Foundation/Library/Thunk16/X64/Thunk16.asm @@ -144,7 +144,7 @@ _Thunk16 PROC USES rbp rbx rsi rdi r12 r13 r14 r15 retf
@@:
xor rax, rax
- mov eax, ss
+ mov ax, ss
shl eax, 4
add eax, esp ; rax <- address of 16-bit stack
mov rsp, r15
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