/* Sm3 - program test asamblare+linkeditare
instructiuni inmultire  - 64 biti(AArch64) 
Comenzi:
>as -o sm3.o sm3.s  <cr>   //asamblare
>ld -o sm3 sm3.o  <cr>     //linkeditare
>./sm3     <cr>           //lansare in executie
> echo $? <cr>           //vizualizare registru rezultat x0

*/

.data
op1: .word 2
op2: .word 3
rez: .word 0

.text
.global _start
_start:
    ldr x0, =op1      // operand 1
    ldr x1, [x0]
    ldr x2, =op2      // operand 2
    ldr x3, [x2]
    mul x4, x1, x3    // multiplicare
   // str x4, =rez    // stocare in rez.
   // ldr x5, =rez
   // ldr x6, [x5]    // rez. in x6
    mov x0, x4        // rez. in x0 vizibil cu echo $?
    mov x8, #93       // revenire in sistem
    svc #0