RE: [PATCH 6/9] gdb: Implement 'bt shadow' to print the shadow stack backtrace.

["Schimpe, Christina" <christina.schimpe@intel.com>]

> -----Original Message-----
> From: Thiago Jung Bauermann <thiago.bauermann@linaro.org>
> Sent: Mittwoch, 26. November 2025 17:30
> To: Schimpe, Christina <christina.schimpe@intel.com>
> Cc: gdb-patches@sourceware.org
> Subject: Re: [PATCH 6/9] gdb: Implement 'bt shadow' to print the shadow
> stack backtrace.
> 
> Thiago Jung Bauermann <thiago.bauermann@linaro.org> writes:
> 
> > "Schimpe, Christina" <christina.schimpe@intel.com> writes:
> >
> >> And if not, do you have an idea how we can fix this?
> >
> > I suggest adding a gdbarch method which given RANGE, returns how many
> > entries there are in the shadow stack.
> 
> Actually I miswrote. The method shouldn't get the RANGE as argument
> because then it wouldn't know where the stack ends. It should get the
> addresses of the first and last elements in the shadow stack.
> 
> --
> Thiago

Hi Thiago, 

Hm, how would we know if we should pass the first or second value of range,
if we don't know which arch we're on?
We could examine in which direction the stack grows, but wouldn't it be safer
if we'd pass SSP and RANGE ? Maybe some arch needs all this information.

Christina
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