Hello,

The bug below and the attached patch are just scary!

(top-gdb) print $r0
$4 = 209
(top-gdb) print $r2
$5 = 0
(top-gdb) set $r2 = 0
(top-gdb) print $r2
$6 = 0
(top-gdb) print $r0
$7 = 0

``addr'' the offset into the registers buffer wasn't being set which 
would lead to register zero always being set.

The worry is that I didn't pick up any testsuite failures :-(

committed the attached,
Andrew