RFC: Disassembly with call frame information

[Indu Bhagat]

On 10/20/23 3:25 PM, Hans-Peter Nilsson wrote:
> Just MHO since you asked for it:
> 
> On Thu, 19 Oct 2023, Nick Clifton wrote:
>> Hi Guys,
>>
>>    I am currently working on a patch (attached) to add an option to the
>>    disassembler to display call frame information alongside the
>>    disassembly.  This is a work in progress, but I wanted to see if
>>    anyone was interested in the current state or had suggestions for
>>    improvements.
> 
> That looks useful.
> 
>>    I am not sure how much information to display.  Currently I am just
>>    showing the CFA assignments, but maybe I need to include the rbp and
>>    ra updates as well ?
> 
> Sounds like the information would otherwise be incomplete, with
> references to those registers but not displaying their values;
> initial and as they change.  Also, there'd be nice symmetry if
> --disassemble-with-cfi has the same information as
> --dwarf=frames-interp.  Maybe tie the option names better?
> Though --disassemble-with-dwarf-frames-interp seems chewy.
> 

I agree that this will be a useful functionality.

I also agree that displaying the same information as 
--dwarf=frames-interp is ideal; but if that is not feasible, at the 
minimum, we should include CFA, FP and RA.