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Re: [parisc-linux] Re: [RFC] Emit OPD reloc for all global symbols


On Tue, Jun 21, 2005 at 04:26:46PM -0400, John David Anglin wrote:
> > "John David Anglin" <dave@hiauly1.hia.nrc.ca> writes:
> > 
> > > Having the PLABEL32 relocation resolve to an OPD appears to require
> > > that the symbol be exported.  As a result, we have a different behaviors
> > > for dlsym on hppa and ia32.  What's ia64 do?
> > 
> > hppa needs to be fixed to implement correct variants of the macros in
> > dl-lookupcfg.h.  It probably just has to copy the definitions of
> > DL_FIXUP_* from sysdeps/ia64/dl-lookupcfg.h, and
> > _dl_runtime_{resolve,profile} has to be adapted accordingly.
> 
> There could be problems here but it seems that hppa is exporting
> all global symbols in .dynsym.

Why does hppa do that? A global symbol in executable should be exported
only if it is referenced by a DSO or --export-dynamic is used.

> 
> Regarding the patch, I'm not sure why but it seems to result in
> more R_PARISC_NONE dynamic relocation records (one for each real
> dynamic relocation?).
> 

IA64 also uses function descriptors. Everything works fine.


H.J.


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