Sum of positives in array

sum_pos.asm

SECTION .text
global positive_sum

; eax = return value (positive sum)
; rdi = pointer to array of ints (4 bytes)
; esi = length of array in rdi
positive_sum:
  xor eax, eax
loop:  
  cmp WORD [rdi], 0 ; check if [rdi] greater than 0
  jle skip
  add eax, [rdi]
skip:
  cmp esi, 0 ; check if any nums left
  je return ; if not, jump to return
  
  add rdi, 4 ; add 4 to rdi, to go to next int in array
  
  sub esi, 1 ; subtract one from our count, stored in esi
  
return:
  ret

Hey Khety! Great to see how you're coming along as a badass asm coder (especially at 13!). Here is what I believe to be a working version:

positive_sum:
  xor eax, eax
loop:
  cmp WORD [rdi], 0 ; check if [rdi] greater than 0
  jle skip
  add eax, [rdi]
skip:
  cmp esi, 1 ; check if any nums left
  je return ; if not, jump to return
  
  add rdi, 4 ; add 4 to rdi, to go to next int in array
  
  sub esi, 1 ; subtract one from our count, stored in esi
  jmp loop

return:
  ret