[PATCH roland/nptl-mips] MIPS: Consolidate NPTL/non versions of vfork

[Joseph S. Myers]

On Wed, 25 Jun 2014, Roland McGrath wrote:

> > This appears to be a copy of the clone patch, not a vfork patch....
> 
> Oops.  The branch had the right thing.
> 
> > The generic pt-vfork.c gives a #error for the non-IFUNC case.  The AArch64 
> > version (which I now notice is returning void not pid_t, which looks 
> > suspicious to me) won't work for MIPS n32/n64 - for the 64-bit ABIs, gp 
> > ($28) is callee-saved, and so the attempt at a tail call involves saving 
> > the caller's value and computing a new value, then restoring the old value 
> > of gp after the non-tail call before returning.  It might work for o32, 
> > but it seems simpler just to #include the alpha version for all three 
> > ABIs.
> 
> OK.  I've updated the branch to do that.  The new patch is below.

This patch is OK.

-- 
Joseph S. Myers
joseph@codesourcery.com