[linux-sh:03176] uclibc on sh3: Illegal instruction errors -- threading issue?

Hi,

I have been trying to get a working shared uclibc environment on sh3 (exact 
cpu:  SH7709(A), HP 690/680/620LX/660LX) for a while now, but so far I have 
been unsuccessful.
The CVS version of the uclibc toolchain can not produce any working 
executables at all, every program segfaults. I have also built a toolchain 
with the stable version (0.9.26), it can produce working executables, but if 
I try to run a shell (busybox ash or bash) I get an illegal instruction error 
(static or dynamic doesn't make a difference). 
The strange thing is, I also built strace, file and some other apps, and they 
seem to run fine. I can also run pretty much all busybox executables, except 
the shells, which terminate with the error. I tried to debug busybox by 
inserting printf lines, I've had ambiguous results, making me expect it has 
something to do with threading. I've run the uclibc test apps, it fails on 
ex7 of the pthread tests, the setjpm test also fails, somewhat confirming my 
suspicion. 
I tried building without pthread support, but this didn't help (I recompiled 
busybox between the different versions).
I've asked in #uclibc on irc.freenode.net, they told me to ask someone more 
familiar with sh3. 

So here it is, my cry for help: if anyone knows what's going on, or even if 
anyone managed to get uclibc running on sh3, please let me know. 

I've provided strace output for busybox and the tests, and the source for both 
the test files, if they're of any use.

Sincerely,

Henk Brunsting