_Unwind_FindEnclosingFunction vs darwin

Sun Dec 20 00:30:00 GMT 2009

On Sat, Dec 19, 2009 at 07:54:15PM +0000, Bryce McKinlay wrote:
> On Sat, Dec 19, 2009 at 6:49 PM, Jack Howarth <howarth@bromo.med.uc.edu> wrote:
>> > to libjava/include/posix.h, what is the correct way to access the missing declarations
> > for dwarf_eh_bases, dwarf_fde, fde and _Unwind_Find_FDE? Are we supposed to directly
> > include the *dw2* headers from the gcc subdirectory or duplicate their contents in this
> > header?
>> I think you only really need to copy the dwarf_eh_bases struct and the
> definition for _Unwind_Find_FDE itself. The others can be treated as
> opaque.
>> Please also call it _Jv_Unwind_Find_FDE and use configure.ac to enable
> it for Darwin (only) as I described before - its bad to override
> functions with #defines...
>> Bryce

 I confused about the details of functions called within a static inline function.
Do we have to create additional static inlines for each of those called functions
in the same header? If so, we are going to have to add a lot of code from
unwind-dw2-fde-darwin.c since _Unwind_Find_FDE() calls _Unwind_Find_registered_FDE().
Perhaps it would be easier if we added a duplicated _Unwind_FindEnclosingFunction()
to unwind-dw2-fde-darwin.c as _darwin10_Unwind_FindEnclosingFunction() and emitted
that symbol via the versioned libgcc_ext stubs. I know that works in theory and would
be a much smaller patch.
 Jack