Re: __emutls_v.__gcov_indirect_call_counters and ___emutls_v.__gcov_indirect_call_callee

[Paolo Bonzini <bonzini at gnu dot org>]

On 03/31/2010 06:00 PM, Jack Howarth wrote:
> On Wed, Mar 31, 2010 at 05:50:14PM +0200, Paolo Bonzini wrote:
> > > > > [MacPro:darwin_objdir/x86_64-apple-darwin10.3.0/libgcc] howarth% nm
> > > > > libgcc_ext.10.5.dylib | grep emutls
> > > > > 00013e70 T ___emutls_get_address
> > > > > 00014070 T ___emutls_register_common
> > > >
> > > > I suppose they are not exported.
> > > >
> > > > Richard.
> > >
> > > Richard,
> > >       Shouldn't these still show up in the output from...
> > >
> > > nm libgcc_s.1.dylib | grep emutls
> > >
> > > with a lower case symbol type?
> >
> > Not if they end up as private_extern symbols (i.e. hidden in GCC/ELF
> > parlance).
> >
> > Paolo
>
>     Okay, but it is still very puzzling that no other target seems impacted.
> Which other targets should be using emulated tls like darwin? Shouldn't
> they have the same issues with undefined symbols?

In general, only ELF targets support visibilities, plus Darwin.

Paolo