[microblaze-uclinux] ptrace and gdbserver (with MMU)

[Steven Hein <ssh@xxxxxxx>]

Hi all--

Is gdbserver (and the underlying ptrace functionality) expected to
be working properly in the Petalogix SVN tree?    I've been trying
to get gdbserver working on my platform, the app being debugged
would segv immediately after the first "continue" from GDB.
While trying to debug this, I found some simple ptrace
examples (i.e. to simply trace system calls in a child process),
and found that this didn't appear to work (the PTRACE_SYSCALL
op didn't trace system calls, and the PC register value that I got
didn't seem to be valid either).

I saw these failures on my own custom kernel, which is very
close to the current SVN kernel   (with MMU enabled).    Then
I tried running my test app on the pre-built platform for my
board (S3ADSP1800 w/ MMU), and I saw the same problems.

Can anyone tell me if they have gdbserver working on an
MMU-enabled Microblaze platform?    If it's not working right now
in the SVN, could anyone give me any hints as to where the
problem might be?

Thanks!
Steve Hein
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