Re: target remote-attach?

Paul Koning
2008-02-29T20:23:30Z

>>>>> "Michael" == Michael Snyder <msnyder@specifix.com> writes:

Michael> Just thinking aloud... we ought to have a sort of
Michael> "remote-attach" command, that would allow us to connect to a
Michael> remote target when it is already in a "run" state. Right
Michael> now the initial handshake protocol prevents doing that.

Michael> The target might be waiting to tell gdb "I stopped because
Michael> of a SIGTRAP", or similar, or it might actually be running,
Michael> and need to be stopped via a serial BRK or the like. After
Michael> that, we would be in a sane state from which we could do the
Michael> usual remote_open handshake.

Michael> Or is there something like that already?

I haven't seen the problem you mention. gdbserver allows attaching to
a running process (by PID) and that has always worked for me. For
that matter, it works also with a native gdb (local debug).

Similarly, I've used the remote target protocol for kernel debug,
connecting after the kernel panic handler has invoked the stub via a
breakpoint instruction. That too works fine.

paul