Re: __sync_lock_test_and_set on ARM

[Andrew Haley <aph-gcc at littlepinkcloud dot COM>]

Phil Endecott writes:
 > Andrew Haley wrote:
 > > David Daney writes:
 > >  > There is nothing that says that __sync_compar_and_swap() cannot expand 
 > >  > to a libcall.
 > >
 > > Err, if a port doen't have an implementation, that's what gcc does
 > > anyway.  :-)
 > 
 > That's what the docs say, but actually if you try to use __sync_* on 
 > ARM you'll get a linker error.  A library implementation would need to 
 > be OS-specific.

Well, yes.  What else would you expect?  I don't understand your
point.

Andrew.