(gdb) b main
Breakpoint 1 at 0x740: file c.s, line 5.
(gdb) run
Starting program: a.out 

Breakpoint 1, main () at c.s:5
5	main:   mov     x0, -1
(gdb) n
6	        ldr     x1, =ram
(gdb) n
7	        ldrb    w0, [x1]
(gdb) p/x $x0
$1 = 0xffffffffffffffff
(gdb) n
9	        mov     x0, -1
(gdb) p/x $x0
$2 = 0x1
(gdb) n
10	        mov     x1, 1
(gdb) n
11	        mov     w0, w1
(gdb) n
13	        mov     x0, -1
(gdb) p/x $x0
$3 = 0x1
(gdb) n
14	        movk    w0, 1
(gdb) n
17	        mov     x0, xzr
(gdb) p/x $x0
$4 = 0xffff0001