read_register_byte can't work with pseudo-reg model

[Richard Earnshaw]

> I'm guessing. Try:
> 
> 	if (REGISTER_READ_P ())
> 	  {
> 	    do something fairly sane;
> 	  }
> 	else
> 	  {
> 	    all the legacy cruft including the call to
> 	    legacy_read_register_gen() and that test.
> 	  }
> 
> Thing is that there is only one target in the FSF using 
> READ_REGISTER_P() so there is this dividing line - something using 
> read_register_p() can be given far stronger requirements than for the 
> older code.

Which target is that, and where is READ_REGISTER_P ?  I can't find 
anything in the either the source or the mailing lists.  Mind you, the 
web-based mailing list search even fails to find your message when I 
search for READ_REGISTER_P.

R.