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http://www.openoffice.org/issues/show_bug.cgi?id=117017
Issue #|117017
Summary|Linux ARM improvement / EducOOo donation
Component|porting
Version|DEV300m93
Platform|Other
URL|
OS/Version|Linux
Status|NEW
Status whiteboard|
Keywords|
Resolution|
Issue type|PATCH
Priority|P3
Subcomponent|code
Assigned to|mh
Reported by|ericb
------- Additional comments from er...@openoffice.org Fri Feb 18 21:22:18 +0000
2011 -------
I recently improved OOo4Kids and OooLight Linux ARM port, improving the arm
case. More precisely, I added --with-arm-target=$value at configure time,
allowing to choose between armv5, armv6, or armv7+ instruction set.
Default (or no option) will define ARMV7, for ARMV7+ (or more recent) compatible
processors.
Possible cases :
* --with-arm-target=5 (or inferior value) : ARMV5 will be defined, no
additional gcc flag used
* --with-arm-target=6 : ARMV6 will be defined, and we'll use:
ARCH_FLAGS+=-march=armv6 -mfloat-abi=softfp -D__SOFTFP__ additional gccflags
* no flag or --with-arm-target=7 (or superior) ARMV7 will be defined, and
we'll use ARCH_FLAGS+=-march=armv7-a -mtune=cortex-a8 -mfpu=neon
-mfloat-abi=softfp gcc flags
Other improvement:
when ARMV7 is defined, the interlock count (in sal) uses ARMv7 assembler
instruction set (ldrex / strex in particular) + atomic operations, else we'll
use __sync_add_and_fetch() or __sync_sub_and_fetch.
This code works very well on OMAP3 ( armv7-a compatible). It has been created
using DEV300_m93 mercurial tree, and it is donated under the LGL v3 License by
EducOOo.
I'm the author of everything in the patch, and I'd be proud to see it (or a part
of it) integrated into OpenOffice.org.
Thanks
@sb : I randomly put you on cc, but please forward to the right people, if I was
wrong with you.
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