Rough outline of commands used for gdb demo on mov.s:

> gcc -o mov mov.s
> gdb mov
> b main
> r
> si 3
> disas main
> p /x $rax
> p /x $rbx
> p /x $rcx
> si
> p /x $rbx
> si
> p /x $rbx
> disas main
> si
> p /x $rax
> x/g $rax
> x/w $rax+4
> si
> p /x $rbx
> k
> y
> q