(gdb) set $npc = 0x100
(gdb) p /x $ppc
$4 = 0x700
(gdb) p /x $npc
$5 = 0x100
(gdb) stepi
^C
Program received signal SIGINT, Interrupt.
0x00000700 in __reset ()
(gdb) stepi
^C
Program received signal SIGINT, Interrupt.
0x00000700 in __reset ()
(gdb)