RE: problem with standard libc on 8xx

Hello Wolfgang,

so what is your proposal, to solve the problem?
I would like to use Debian binaries, but I cannot
use the floating point emulation of the kernel!?

Regards,
Torsten

-----Original Message-----
From: Wolfgang Denk [mailto:wd@denx.de]
Sent: Freitag, 27. Februar 2004 10:43
To: Demke, Torsten
Cc: Linuxppc-Embedded (E-mail)
Subject: Re: problem with standard libc on 8xx


In message
<9CFB9DA5261CD611A29B00508B78904807F880ED@ex-deu-munich02.forc
e.de> you wrote:

quoted

I created my own root-fs for a MPC8xx platform
using standard Debian packages (including libc).
When I start the system, the init scripts hangs

...

quoted

I guess that the Debian libc uses floating point - which

Thi sis definitely one cause of the problem.  Another  one  might  be
optimization  for  a  incorrect  cache  line  size  (32 instead of 16
bytes).

quoted

is not available on MPC8xx - but I thougt the kernel would
emulate this calls (CONFIG_MATH_EMULATION=y).

This has never been working reliably for any real-life code. And it's
awfully slow.

Also note that you CANNOT mix standard binaries (from Debian) and 8xx
specific libraries (from ELDK) -  this  will  crash  as  soon  as  an
application attempts to use floating point.


Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
Above all else -- sky.

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/