diff options
Diffstat (limited to 'EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.S')
-rw-r--r-- | EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.S | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.S b/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.S index d14b9114d8..f1b5ad7adb 100644 --- a/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.S +++ b/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/X64/PageFaultHandler.S @@ -1,6 +1,6 @@ #------------------------------------------------------------------------------
#
-# Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2006 - 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
@@ -28,10 +28,28 @@ ASM_PFX(PageFaultHandlerHook): pushq %r9
pushq %r10
pushq %r11
+
+ addq $-0x68, %rsp # reserve memory to store XMM registers and make address 16-byte alignment
+ movdqa %xmm0, 0(%rsp)
+ movdqa %xmm1, 0x10(%rsp)
+ movdqa %xmm2, 0x20(%rsp)
+ movdqa %xmm3, 0x30(%rsp)
+ movdqa %xmm4, 0x40(%rsp)
+ movdqa %xmm5, 0x50(%rsp)
+
addq $-0x20, %rsp
call ASM_PFX(PageFaultHandler)
addq $0x20, %rsp
- testb %al, %al
+
+ movdqa 0(%rsp), %xmm0
+ movdqa 0x10(%rsp), %xmm1
+ movdqa 0x20(%rsp), %xmm2
+ movdqa 0x30(%rsp), %xmm3
+ movdqa 0x40(%rsp), %xmm4
+ movdqa 0x50(%rsp), %xmm5
+ addq $0x68, %rsp
+
+ testb %al, %al # set ZF flag
popq %r11
popq %r10
popq %r9
@@ -39,7 +57,7 @@ ASM_PFX(PageFaultHandlerHook): popq %rdx
popq %rcx
popq %rax # restore all volatile registers
- jnz L1
+ jnz L1 # check ZF flag
#ifdef __APPLE__
int $3
#else
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