This is the mail archive of the
gdb@sources.redhat.com
mailing list for the GDB project.
Re: [testsuite & dwarf2] How to handle store.exp failure on AMD64?
> >Moreover, the algorithm I suggested that you use -- assume saved --
> >is also completely independant of the ABI, so its' not like GDB
> >needs to hard code ABI specific information either.
>
> It doesn't work in general.
> On a register window machine, it could use a fairly complex starting
> state vis:
> globals: same
> locals: where saved on stack
> input: undefined
> output: in input
> (register windows give me a headache so don't assume this one is correct :-)
This has to be handled with the same magic that handles register windows
in the first place. I.e. DW_CFA_GNU_window_save. Dwarf2 doesn't handle
windows itself at all.
You could also do it with explicit dw2 operations, but that's no different
than a non-windowed system than starts with all DW_CFA_same_value and
adds DW_CFA_undefined, DW_CFA_register and DW_CFA_offset notes as needed.
> [perhaphs I should have cross posted this with dwarf2 :-)]
Probably.
r~