It could be so. I tried to call _FPU_SETCW(0), since that's what the old
_FPU_DEFAULT was. That fails with i386, maybe I should have used the macro
definition like _FPU_IEEE instead.
-Juha
On 12/01/11 11:42, Moiseichuk Leonid (Nokia-MS/Helsinki) wrote:
I have impression that fpu_control.h has the same interface for all HW
platforms, so conditional compilation is not required.
With best wishes, Leonid
-----Original Message----- From: Kallioinen Juha (Nokia-MS/Helsinki)
Sent: 12 January, 2011 11:35 To: Moiseichuk Leonid (Nokia-MS/Helsinki)
Cc: ext Carsten Munk; meego-dev; Kant Jarmo (Nokia-MS/Helsinki) Subject:
Re: [MeeGo-dev] ARM RunFast by default in glibc
Here's a patch to arm build of eglibc 2.10 that does it. I had to modify
some packages to pass their testsuites. One of the packages was mpfr, the
float tests will fail with RunFast mode.
In arm case the _FPU_IEEE mode is different from the default mode, which
does not have the FPU exceptions set on.
Any code that calls this _FPU_SETCW should also be #ifdef __arm__.
-Juha
On 12/01/11 11:21, Moiseichuk Leonid (Nokia-MS/Helsinki) wrote:
Yes, we have. Juha could provide it. The best outcome: using standard
glibc interface we could turn it to FAST/IEEE mode
_FPU_SETCW(_FPU_IEEE);
Turning back to run fast could be done by _FPU_SETCW(_FPU_DEFAULT);
No problems discovered during testing.
With best wishes, Leonid
-----Original Message----- From: meego-dev-boun...@meego.com
[mailto:meego-dev-boun...@meego.com] On Behalf Of ext Carsten Munk
Sent: 12 January, 2011 11:07 To: meego-dev; Kant Jarmo
(Nokia-MS/Helsinki) Subject: [MeeGo-dev] ARM RunFast by default in
glibc
Hi (ARM toolchain group mostly)
Do we have a patch for glibc-2.11-12-g24c0bf7 and/or glibc-2.12.1 that
enables ARM RunFast[1] mode by default anywhere? Would be good to push
it along with hardfp while we're at it and getting things tested
through.
Best regards, Carsten Munk
[1]
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0274h/C
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