RFC: Patch to fix MIPS -mno-shared with multi-got...

Thiemo Seufer ica2_ts@csv.ica.uni-stuttgart.de
Thu Mar 3 22:49:00 GMT 2005


David Daney wrote:
[snip]
> >WRT possible breakge to things expecting the real "_gp": I agree that
> >might be a problem.  One possibility would be to define a new symbol,
> >something like __gnu_local_gp, and make -mno-shared use that instead
> >of plain _gp.  -mno-shared is a new option, so there's no backwards
> >compatiblity problem.
> 
> OK, I kind of like this idea.  But I am not an ABI authority.  I am 
> assuming the the meaning of "_gp_disp" is defined somewhere in the ABI 
> specs.  I know _gp is specified.  Does anybody have objections to adding 
> the new magic __gnu_local_gp symbol?

I have the general (and still vague) idea to have multigot-capable object
files, with _gp _gp.1 .. _gp.n and _gp_disp _gp_disp.1 .. _gp_disp.n
depending on the GOT in use, and with the single got case staying binary
compatible. I think this would cover your case as well, but it's of
course much more work.


Thiemo



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