Hi Wolfgang,
I used FC4 ppc binaries for some testing. xlibs, xterm and python where
the first packages I did some tests with. It was just a try to see what
happens.
FPU emulation was the first I needed (of course). Then I switched to the ELDK
ppc_4xxFP root filesystem. This makes it even possible to use perl with math:
bash-3.00# perl -e 'print ("sin(pi/2)=",sin(3.14/2),"\n")'
sin(pi/2)=0.999999682931835
bash-3.00# perl -e 'print ("sqrt(3)=",sqrt(3),"\n")'
sqrt(3)=1.73205080756888
bash-3.00# cat /proc/cpuinfo
processor : 0
cpu : 405GPr
clock : 399MHz
revision : 9.81 (pvr 5091 0951)
bogomips : 495.61
machine : esd CPCI-405
plb bus clock : 133MHz
pci bus clock : 33MHz
bash-3.00#
I would not recommend to use this for production. But its a good starting
point before turning on the compiler :-)
Matthias
On Friday 24 November 2006 00:00, Wolfgang Denk wrote:In message [off-list ref] you
wrote:
quoted
there's a quick'n'dirty way to get a perl running on your CPU.
Take the Fedora Core 4 ppc binary rpm (perl-5.8.6-15.ppc.rpm) and install
it
quoted
from an ELDK 4 root filesystem:
This will only work if you are running on a system where your CPU has
a full-blown CPU, 32 bytes cache line size, and your run-time
environment (all system libraries) are configured to use the FPU.
It will fail on FPU-less or FPU-restricted systems like MPC8xx,
PPC4xx, or MPC85xx.
quoted
Note: This test has been done on a PPC405. But do not forget to use a
kernel
quoted
with math emulation for this to work.
I guess you didn't do much testing. You should try some mathematics,
and you might be surprised what happens when your Perl binary uses
the (emulated) FPU, while the system libraries use soft-float.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
It's all Klatchian to me.
- Terry Pratchett & Stephen Briggs, _The Discworld Companion_
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