%include "rw32-2018.inc"
;%include "io.inc"

;esp - stack 7c-end

; db   dw   dd
;byte word dword
; 8    16   32

; [var] - value  var - adress

section .bss ; uninicialized values
; name resb size
ar_num_3 resd 10

section .data ; inicialized values
; name size value
ar_num_2 dd 1, 10, 100
ar_num_1 dd 3, 30, 300

section .text

array_operations:
    xor ebx, ebx
    _for:
        cmp al, 0
        je .add
        cmp al, 1
        je .sub
        cmp al, 2
        je .div
        cmp al, 3
        je .mul
        .add:
            mov edx, [ar_num_1 + ebx]
            add edx, [ar_num_2 + ebx]
            mov dword [ar_num_3 + ebx], edx
            jmp .end
        .sub:
            mov edx, [ar_num_1 + ebx]
            sub edx, [ar_num_2 + ebx]
            mov dword [ar_num_3 + ebx], edx
            jmp .end
        .div:
            push eax
            mov eax, [ar_num_1 + ebx]
            mov edx, [ar_num_2 + ebx]
            div edx
            mov dword [ar_num_3 + ebx], eax
            pop eax
            jmp .end
        .mul:
            push eax
            mov eax, [ar_num_1 + ebx]
            mov edx, [ar_num_2 + ebx]
            mul edx
            mov dword [ar_num_3 + ebx], eax
            pop eax
            jmp .end
        .end:
            add ebx, 4
            sub ecx, 1
            cmp ecx, 0
            jne _for
            ret
CMAIN:
    mov ebp, esp; for correct debugging
    xor eax, eax
;Implementujte podprogram, který sečte dvě pole a výsledek uloží do pole třetího.
;Bonus: Implementujte funkci, která na základě obsahu registru AL nad poli jednu z operací: +,-,*
    xor eax, eax
    mov al, 3; operation type 0-add 1-sub 2-div 3-mul
    mov ecx, 3; array size
    call array_operations

    mov eax, [ar_num_3]
    mov ebx, [ar_num_3+4]
    mov ecx, [ar_num_3+8]


    xor eax, eax
    ret