sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

MdePkg/BaseLib: Support IA32 processors without CMOVx

Browse Source 
Remove use of CMOVx instruction from IA32 assembly files in BaseLib.  
This matches compiler flags for all supported C compilers.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17213 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Michael Kinney
2015-04-27 19:38:39 +00:00
committed by mdkinney
parent 881813d7a9
commit 88a75d260c
16 changed files with 83 additions and 53 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
MdePkg/Library/BaseLib/Ia32/RRotU64.S
View File

@@ -1,6 +1,6 @@
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2006 - 2015, 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
@@ -39,8 +39,10 @@ ASM_PFX(InternalMathRRotU64):
roll %cl, %ebx
shrdl %cl, %ebx, %edx
testb $32, %cl # Count >= 32?
cmovnz %eax, %ecx # switch eax & edx if Count >= 32
cmovnz %edx, %eax
cmovnz %ecx, %edx
jz L0
movl %eax, %ecx # switch eax & edx if Count >= 32
movl %edx, %eax
movl %ecx, %edx
L0:
pop %ebx
ret