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Clear the direction flag in interrupt/exception handlers' assembly entry code before calling C functions to follow the UEFI calling convention.

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Signed-off-by: rsun3
Reviewed-by:  jyao1


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11664 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
rsun3 2011-05-16 06:10:42 +00:00
parent e332b442b9
commit ad8cbf7197
4 changed files with 16 additions and 4 deletions
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5
MdeModulePkg/Universal/DebugSupportDxe/Ia32/AsmFuncs.asm
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@ -1,7 +1,7 @@
;/** @file ;/** @file
; Low leve IA32 specific debug support functions. ; Low leve IA32 specific debug support functions.
; ;
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> ; Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
; This program and the accompanying materials ; This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License ; 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 ; which accompanies this distribution. The full text of the license may be found at
@ -363,6 +363,9 @@ CommonIdtEntry::
; They MUST be. If they are not, a GP fault will occur. ; They MUST be. If they are not, a GP fault will occur.
FXSTOR_EDI FXSTOR_EDI
;; UEFI calling convention for IA32 requires that Direction flag in EFLAGs is clear
cld
;; UINT32 ExceptionData; ;; UINT32 ExceptionData;
mov eax, ExceptData mov eax, ExceptData
push eax push eax

5
MdeModulePkg/Universal/DebugSupportDxe/X64/AsmFuncs.asm
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@ -1,7 +1,7 @@
;/** @file ;/** @file
; Low level x64 routines used by the debug support driver. ; Low level x64 routines used by the debug support driver.
; ;
; Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR> ; Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.<BR>
; This program and the accompanying materials ; This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License ; 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 ; which accompanies this distribution. The full text of the license may be found at
@ -393,6 +393,9 @@ ExtraPushDone:
; They MUST be. If they are not, a GP fault will occur. ; They MUST be. If they are not, a GP fault will occur.
FXSTOR_RDI FXSTOR_RDI
;; UEFI calling convention for x64 requires that Direction flag in EFLAGs is clear
cld
;; UINT64 ExceptionData; ;; UINT64 ExceptionData;
mov rax, ExceptData mov rax, ExceptData
push rax push rax

5
UefiCpuPkg/CpuDxe/Ia32/CpuAsm.asm
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@ -1,7 +1,7 @@
TITLE CpuAsm.asm: TITLE CpuAsm.asm:
;------------------------------------------------------------------------------ ;------------------------------------------------------------------------------
;* ;*
;* 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 ;* This program and the accompanying materials
;* are licensed and made available under the terms and conditions of the BSD License ;* 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 ;* which accompanies this distribution. The full text of the license may be found at
@ -272,6 +272,9 @@ ErrorCodeAndVectorOnStack:
mov edi, esp mov edi, esp
db 0fh, 0aeh, 07h ;fxsave [edi] db 0fh, 0aeh, 07h ;fxsave [edi]
;; UEFI calling convention for IA32 requires that Direction flag in EFLAGs is clear
cld
;; UINT32 ExceptionData; ;; UINT32 ExceptionData;
push dword ptr [ebp + 2 * 4] push dword ptr [ebp + 2 * 4]

5
UefiCpuPkg/CpuDxe/X64/CpuAsm.asm
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@ -1,7 +1,7 @@
TITLE CpuAsm.asm: TITLE CpuAsm.asm:
;------------------------------------------------------------------------------ ;------------------------------------------------------------------------------
;* ;*
;* Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.<BR> ;* Copyright (c) 2008 - 2011, Intel Corporation. All rights reserved.<BR>
;* This program and the accompanying materials ;* This program and the accompanying materials
;* are licensed and made available under the terms and conditions of the BSD License ;* 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 ;* which accompanies this distribution. The full text of the license may be found at
@ -223,6 +223,9 @@ NoErrorCode:
mov rdi, rsp mov rdi, rsp
db 0fh, 0aeh, 07h ;fxsave [rdi] db 0fh, 0aeh, 07h ;fxsave [rdi]
;; UEFI calling convention for x64 requires that Direction flag in EFLAGs is clear
cld
;; UINT32 ExceptionData; ;; UINT32 ExceptionData;
push qword ptr [rbp + 16] push qword ptr [rbp + 16]