(gdb) x/i $eip
0xbffffe84:     nop
(gdb) nexti
0xbffffe85 in ?? ()
(gdb) x/i $eip
0xbffffe85:     xor    %eax,%eax
(gdb) nexti
0xbffffe87 in ?? ()
(gdb) x/i $eip
0xbffffe87:     inc    %eax
(gdb) nexti
0xbffffe88 in ?? ()
(gdb) x/i $eip
0xbffffe88:     mov    %eax,%ebx
(gdb) nexti
0xbffffe8a in ?? ()
(gdb) x/i $eip
0xbffffe8a:     int    $0x80
(gdb) nexti

Program exited with code 01.