Question: Is Dwarf CFI support required for new target?

[Simon Marchi]

On 2018-05-29 12:14, Don Breazeal wrote:
> Hi,
> I have a question about the requirements for GDB port to a new target:
> is support for Dwarf Call Frame Information required for acceptance, or
> is prologue analysis sufficient?
> Thanks
> --Don

Hi Don,

Can you provide more context?  I can interpret your question in two 
ways:

- Your producer does not produce CFI, so you would be forced to always 
use prologue analysis for unwinding.  In that case, I guess it's fine, 
GDB should do its best with the information at its disposal.
- Your producer produces CFI but GDB for your architecture won't use it. 
  In that case, I would ask why don't you use it.  It's generally more 
reliable and less hair-pulling than prologue analysis.

Simon