+@item print_registers_info (@var{gdbarch}, @var{frame}, @var{regnum}, @var{all})
+@findex print_registers_info
+If defined, pretty print the value of the register @var{regnum} for the
+specified @var{frame}. If the value of @var{regnum} is -1, pretty print
+either all registers (@var{all} is non zero) or a select subset of
+registers (@var{all} is zero).
+
+The default method prints one register per line, and if @var{all} is
+zero omits floating-point registers.
+
+@item PRINT_VECTOR_INFO()
+@findex PRINT_VECTOR_INFO
+If defined, then the @samp{info vector} command will call this function
+to print information about the processor's vector unit.
+
+By default, the @samp{info vector} command will print all vector
+registers (the register's type having the vector attribute).
+