Counting from 0 to 10, Assembly

Counting from 0 to 10

section .data
numPrint db '0'       ; for transform number to string and back

section .bss
num db 1              ; number for printint
count db 1            ; counter for cycle

section .text
global _start

_start:
    mov al, 0         
    mov [count], al   ; set counter to 0
    mov [num], al     ; set number to 0
loop:
    call toString     ; number to string/print/back to number
    mov al, [count]
    inc al            ; increment value
    mov [count], al   ; counter + 1
    mov [num], al     ; number + 1 
    mov al, 10        ; till 10
    cmp [count], al   ; check exit condition
    jnz loop
    jz exit
    
exit:
    ; exit program
    mov eax, 1
    mov ebx, 0
    int 80h
    
toString:
    ; prepare number
    mov bl, [numPrint]
    add [num], bl
    call print
    ret

print:
    ; output printing to screen
    mov eax, 4
    mov ebx, 1
    mov ecx, num
    mov edx, 1
    int 80h
    call toNumber  ; string -> number
    ret
    
toNumber:
    mov bl, [numPrint]
    sub [num], bl
    ret


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