diff options
Diffstat (limited to 'EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.asm')
| -rw-r--r-- | EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.asm | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.asm b/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.asm index d1c7bf972d..d58a04bcfb 100644 --- a/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.asm +++ b/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.asm @@ -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 |