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UefiCpuPkg: Update SmmCpuFeatureLib pass XCODE5 tool chain

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https://bugzilla.tianocore.org/show_bug.cgi?id=849

In V2, use "mov rax, strict qword 0" to replace the hard code db.

1. Use lea instruction to get the address instead of mov instruction.
2. Use the dummy address as jmp destination, and add the logic to fix up
the address to the absolute address at boot time.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>
Cc: Andrew Fish <afish@apple.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Liming Gao
2018-01-11 17:05:14 +08:00
parent 2db0ccc2d7
commit 1c7a65eba7
5 changed files with 52 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
UefiCpuPkg/Library/SmmCpuFeaturesLib/X64/SmiException.nasm
View File

@@ -1,5 +1,5 @@
;------------------------------------------------------------------------------ ;
; Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved.<BR>
; Copyright (c) 2016 - 2018, 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
@@ -95,7 +95,7 @@ ASM_PFX(OnStmSetup):
; Check XD disable bit
;
xor r8, r8
mov rax, ASM_PFX(gStmXdSupported)
lea rax, [ASM_PFX(gStmXdSupported)]
mov al, [rax]
cmp al, 0
jz @StmXdDone1
@@ -118,7 +118,7 @@ ASM_PFX(OnStmSetup):
call ASM_PFX(SmmStmSetup)
add rsp, 0x20
mov rax, ASM_PFX(gStmXdSupported)
lea rax, [ASM_PFX(gStmXdSupported)]
mov al, [rax]
cmp al, 0
jz .11
@@ -139,7 +139,7 @@ ASM_PFX(OnStmTeardown):
; Check XD disable bit
;
xor r8, r8
mov rax, ASM_PFX(gStmXdSupported)
lea rax, [ASM_PFX(gStmXdSupported)]
mov al, [rax]
cmp al, 0
jz @StmXdDone2
@@ -162,7 +162,7 @@ ASM_PFX(OnStmTeardown):
call ASM_PFX(SmmStmTeardown)
add rsp, 0x20
mov rax, ASM_PFX(gStmXdSupported)
lea rax, [ASM_PFX(gStmXdSupported)]
mov al, [rax]
cmp al, 0
jz .12