See now why I don't merge this kind of rewrites without careful reviewing and testing (which I didn't have the time for so far for Joey's routines)? (In addition, Joey also asked me not to merge those routines without adding the additional routines he did, which only recently got documentation in the correct format.)

And __ATTR_LIB_C__ has always been banned for assembly routines in TIGCCLIB, that's why it's called __ATTR_LIB_C__! Assembly routines are indeed supposed to use explicit register parameters. This has been the rule ever since we started using register parameters in TIGCCLIB.