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Save/Restore missing volatile registers (XMM0-5) save/restore in Page Fault handler.

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Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13974 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff
2012-11-28 04:49:48 +00:00
parent 72ccedbd76
commit 53c76a6478
2 changed files with 42 additions and 6 deletions
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24
EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.asm
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@@ -1,6 +1,6 @@
;------------------------------------------------------------------------------
;
; Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
; Copyright (c) 2010 - 2012, 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
@@ -32,10 +32,28 @@ PageFaultHandlerHook PROC
push r9
push r10
push r11
add rsp, -10h * 6 - 8 ; reserve memory to store XMM registers and make address 16-byte alignment
movdqa [rsp], xmm0
movdqa [rsp + 10h], xmm1
movdqa [rsp + 20h], xmm2
movdqa [rsp + 30h], xmm3
movdqa [rsp + 40h], xmm4
movdqa [rsp + 50h], xmm5
add rsp, -20h
call PageFaultHandler
add rsp, 20h
test al, al
movdqa xmm0, [rsp]
movdqa xmm1, [rsp + 10h]
movdqa xmm2, [rsp + 20h]
movdqa xmm3, [rsp + 30h]
movdqa xmm4, [rsp + 40h]
movdqa xmm5, [rsp + 50h]
add rsp, 10h * 6 + 8
test al, al ; set ZF flag
pop r11
pop r10
pop r9
@@ -43,7 +61,7 @@ PageFaultHandlerHook PROC
pop rdx
pop rcx
pop rax ; restore all volatile registers
jnz @F
jnz @F ; check ZF flag
jmp mOriginalHandler
@@:
add rsp, 08h ; skip error code for PF