* printcmd.c (next_gdbarch): New static variable.
(set_next_address, do_examine, x_command): Set it.
(decode_format): Use 'a' size to indicate width of an address.
(do_examine): Add GDBARCH argument. Handle 'a' size.
(x_command): Pass architecture to do_examine.
Error if called without argument the first time.
(do_one_display): Pass architecture to do_examine.
(examine_i_type, examine_b_type, examine_h_type, examine_w_type,
examine_g_type): Remove.
(_initialize_printcmd): Do not initialize them.
(do_examine): Use builin_type_int... instead of examine_..._type.
testsuite/ChangeLog:
* gdb.base/default.exp: Update test case for "x" changes.