a:
   push #4

   ld [fp+12] -> %r0     / i = p[0]
   ld [r0] -> %r0
   st %r0 -> [fp]

   ld [fp+12] -> %r0     / i = p[3]
   mov #12 -> %r1
   add %r0, %r1 -> %r0
   ld [r0] -> %r0
   st %r0 -> [fp]

   ld [fp] -> %r0        / i = p[i]
   mov #4 -> %r1
   mul %r0, %r1 -> %r0
   ld [fp+12] -> %r1
   add %r0, %r1 -> %r0
   ld [r0] -> %r0
   st %r0 -> [fp]
   
   ret
   
main:
   push #20

   mov #10 -> %r0        / Store the values of array
   st %r0 -> [fp-16]
   mov #11 -> %r0
   st %r0 -> [fp-12]
   mov #12 -> %r0
   st %r0 -> [fp-8]
   mov #2 -> %r0
   st %r0 -> [fp-4]
   mov #15 -> %r0
   st %r0 -> [fp]

   mov #-16 -> %r0        / Push array onto the stack
   add %fp, %r0 -> %r0
   st %r0 -> [sp]--       / call a
   jsr a
   pop #4
   ret