PATCH [1/n]: Initial x32 support

[Joseph S. Myers]

On Thu, 15 Mar 2012, H.J. Lu wrote:

> > It seems to me like these should be able to use the same set of conditions
> > as used for bits/syscall.h to handle an arbitrary number of variants.
> > Maybe rename the variables used for that from syscall-list-* to
> > multiarch-header-* or similar, move them out of sysdeps/unix/sysv/linux/
> > to non-OS-specific directories and use the same set of conditions in the
> 
> Where should they go? sysdeps/generic?

The default definitions (from sysdeps/unix/sysv/linux/Makefile) would I 
suppose go some suitable location based on where they end up being used; 
those in sysdeps/unix/sysv/linux/x86_64/Makefile would I suppose end up in 
sysdeps/x86_64/Makefile (likewise for other architectures).  I don't have 
a detailed design, it simply seems that there is a lot in common between 
the different cases of multiarch headers (even though bits/syscall.h is 
one header working for all subarchitectures while the others involve a 
wrapper header round different variants for each subarchitecture).

-- 
Joseph S. Myers
joseph@codesourcery.com