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Date: Mon, 19 Oct 2015 09:06:00 -0000
From: Pedro Alves <palves@redhat.com>
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To: Juha Aaltonen <turbopultti@gmail.com>,        gdb-mailing list <gdb@sourceware.org>
Subject: Re: What's this ? (remote serial protocol)
References: <CAHR0xd7i4vdxb9cfNcvfFmVKHfjRVspbTuoUrauJ-vhFjKpD-Q@mail.gmail.com>
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On 10/18/2015 10:50 PM, Juha Aaltonen wrote:
> I didn't understand...
> 
> Sending packet:
> $qOffsets#4b...[\x00][\x00][\x00][\x00][\x00][\x00][\x00][\x00][\x00][\x00][\x00][\x00][
> r +]Ack
> [$][#][0][0]Packet received:
> [
> w \x00]PC register is not available
> 
> What does PC have to do with qOffsets?

Probably nothing.  "PC register is not available" means GDB couldn't
source the PC register value from anywhere.  E.g., the PC register's
value might be missing from the g/p packet replies.

Debug gdb, and put a breakpoint on throw_it.  Figure out from context
and backtrace what GDB is trying to do when that error is thrown.

Thanks,
Pedro Alves