Re: [PATCH 00/12] Add CET shadow stack support

[Thiago Jung Bauermann <thiago.bauermann@linaro.org>]

"Schimpe, Christina" <christina.schimpe@intel.com> writes:

>> -----Original Message-----
>> From: Thiago Jung Bauermann <thiago.bauermann@linaro.org>
>> Sent: Tuesday, February 4, 2025 4:58 AM
>> To: Schimpe, Christina <christina.schimpe@intel.com>
>> Cc: Guinevere Larsen <guinevere@redhat.com>; gdb-patches@sourceware.org
>> Subject: Re: [PATCH 00/12] Add CET shadow stack support
>>
>> In the meantime, one question: do you still plan to add a "bt -shadow"
>> command, or any other shadow stack related command as discussed in the
>> thread below?
>>
>> https://inbox.sourceware.org/gdb/SN7PR11MB7638DE1337F8F0F0282EBD56F99
>> 6A@SN7PR11MB7638.namprd11.prod.outlook.com/
>>
>> I ask because for AArch64 Guarded Control Stack (which is equivalent to Intel
>> Shadow Stack) I'll need to add commands to enable/disable shadow stacks, and
>> also to see which GCS-specific features are enabled and locked in the inferior.
>
> Hi Thiago,
>
> Thanks a lot for looking at this.
>
> Yes, I implemented "bt shadow" as subcommand of the ordinary backtrace command.
> I planned to submit it as follow up series once this one is merged.
>
> If you already want to have a look, the most important commits are:
> https://github.com/intel/gdb/commit/7fbb0757af87d490225f91d3950eee7180acf6ad
> https://github.com/intel/gdb/commit/e10103076ef3e4c75df91e2246637c2af3ba870a
> https://github.com/intel/gdb/commit/c3386a341940e34263e7c396143d784d7fe924be
> https://github.com/intel/gdb/commit/16c22643967e1b9d41a317b0bd02d3530f5d9f70

Thank you for the references. I'll look into those commits.

> But it also required a number of commits to refactor the backtrace command in general,
> which is the reason why I split it up in 2 series.

Good idea.

--
Thiago