X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=EdkCompatibilityPkg%2FCompatibility%2FSmmBaseHelper%2FX64%2FPageFaultHandler.asm;h=d58a04bcfbcb4b6bb53a94312c7bdc083a11e57f;hb=53c76a6478d106c89c4ba48599a8f19b74480d13;hp=2c695e3b88584e73cef0263457adc54c161b2161;hpb=584d5652274f7eaf407b69ca25ddace15043c5b6;p=mirror_edk2.git
diff --git a/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.asm b/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.asm
index 2c695e3b88..d58a04bcfb 100644
--- a/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.asm
+++ b/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.asm
@@ -1,6 +1,6 @@
;------------------------------------------------------------------------------
;
-; Copyright (c) 2010, Intel Corporation. All rights reserved.
+; Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.
; 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
@@ -19,8 +19,8 @@
;
;------------------------------------------------------------------------------
-mOriginalHandler PROTO
-PageFaultHandler PROTO
+EXTERN mOriginalHandler:QWORD
+EXTERN PageFaultHandler:PROC
.code
@@ -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 rax, rax
+
+ 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
@@ -43,10 +61,10 @@ 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
iretq
PageFaultHandlerHook ENDP
- END
\ No newline at end of file
+ END