two gdb porting questions

[Jan Hoogerbrugge]

>From: Daniel Jacobowitz <drow@mvista.com>

> > * I want to use stabs to pass frame information from my compiler to
> >  gdb. Which stab number(s) should I use for this? How do I get this
> >  information in my xxx-tdep.c given the start address of the
> >  function? (I use ELF in the case that matters)
>
>Is it absolutely necessary that you use stabs?  There are clean ways to
>express this information in DWARF-2, and if you're using ELF, there's
>really no excuse.

My compiler (which is not gcc) happens to generate stabs. So I have to do it 
with stabs. Currently the compiler misuses a N_ROSYM to pass frame info to 
its debugger. However, gdb does not like this.

Are there other targets where a stab is used for frame information?

The instruction format of the debug target is so complex that decoding the 
prologue is not a real option.

Cheers,
Jan

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