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Date: Tue, 15 Dec 2015 11:59:00 -0000
From: Pedro Alves <palves@redhat.com>
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To: Tristan Gingold <gingold@adacore.com>,        Christopher Friedt <chrisfriedt@gmail.com>
CC: gdb-patches@sourceware.org
Subject: Re: cortex-m xml register descriptions for m-system
References: <CAF4BF-RuPwFWfDa2Sp7MzYjF8bo1K3xb=jMThSpK4T7gTe+whQ@mail.gmail.com> <566F108D.1000401@redhat.com> <CAF4BF-TUH0V4=YY07u9n3q=dMecbjMr9cOrEm=2BDXeP3HrDQQ@mail.gmail.com> <DA04697A-0269-4CCB-B40D-8C727E696C64@adacore.com>
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On 12/15/2015 11:44 AM, Tristan Gingold wrote:
> 
>> On 15 Dec 2015, at 00:11, Christopher Friedt <chrisfriedt@gmail.com> wrote:

>> Hmm... It's hard for me to say. The MSP and PSP are banked stack
>> pointers, control instructs the core which stack pointer to use, and
>> they are also tightly coupled to exception entry, so I would lean
>> towards yes?
> 
> I do think so too.
> 
> I have just written a patch so that gdb unwinds correctly on cortex-m
> exceptions, and this of course requires that gdb knows about at least
> psp.

Alright, that's indeed a very good reason.

Thanks,
Pedro Alves