On Wed, 2009-10-21 at 10:07 -0700, David Daney wrote:
> I have not used -pg, so I don't know for sure, I think all it does is
> add the calls to _mcount. Someone could investigate
> -fno-omit-frame-pointer, with that you may be able to use:
Note, -pg assumes -fno-omit-frame-pointer, since -fomit-frame-pointer
and -pg are incompatible.
>
> move s8,sp
>
> To identify function prologs, but it would still be ad hoc, as modern
> versions of GCC will reorder instructions in the prolog for better
> scheduling.
I'll have to search the ABI documentation about calling _mcount in MIPS.
There are assumptions with _mcount that are made. It may very well be
safe to assume that the move s8,sp will always be there before an mcount
call.
-- Steve
|