title: How to print value pointed by register
body: <p>I am trying to learn asembly and reverse and whene i tryed to debug a simple chall i wanted to see my registers in gdb with info registers
  Rax 0x7fffffdd90 
  Now inwant to know where rax. Is pointîg to ,( inprentrd rax now i want to print [rax] ) 
  Or is it possible to set a pointed value in register 
  Inteed of doing set $eax = $rax 
  I want to do somthing like set $eax = [$rax]</p>
  
  <p>Thanx for help</p>