I vaguely remember using a patched ARM kernel (probably one of the
late 2.1 series) that gave complete stack traces in response to faults
in usermode programs rather than just the pc and lr. I can't seem to
find the functionality in the linux-2.2.1-rmk2-np1 derived kernel I'm
currently using even with CONFIG_DEBUG_USER enabled.
I thought it may have been in one of philb's patches but I've looked
at a few and can't find anything that obviously implements this.
The stack trace would be very useful to me at the moment in tracking
down a bug since even if I could figure out a way of cross-compiling
gdb the program is multithreaded so it wouldn't be much help[1] :-(
TIA
--
Mike Crowe
[1] Unless anyone has successfully compiled an SA1100 version of gdb
that contains the necessary magic for debugging multithreading
targets.
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