Re: [CRIS] dwarf2 frame sniffer problem?

[Orjan Friberg <orjan.friberg@axis.com>]

Daniel Jacobowitz wrote:
> 
> I see that your GCC port uses textual prologues.  As it happens, I just
> implemented dwarf generation for that mechanism (for Thumb), so I know
> how it's supposed to work.  Here's your problem.  First you have:
> 
>       /* FIXME: Slightly redundant calculation, as we do the same in
>          pieces below.  This offset must be the total adjustment of the
>          stack-pointer.  We can then def_cfa call at the end of this
>          function with the current implementation of execute_cfa_insn, but
>          that wouldn't really be clean.  */
> 
>       cfa_label = dwarf2out_cfi_label ();
>       dwarf2out_def_cfa (cfa_label, cfa_reg, cfa_offset);
> 
> but that label is at the beginning of the function, so this is
> incorrect.  That's not what the CFA is at the beginning of the
> function.

Would emitting that label *after* the prologue be an option (i.e. 
leaving us without dwarf2 information while still in the prologue)?

-- 
Orjan Friberg
Axis Communications