%include "MY_IO.h"

global main 

; c libary functions
extern printf
extern exit

; My functions
extern PrintHello
extern Newline
extern PrintNumber
extern AddEm
extern PrintAndIncrement

extern FillArray
extern PrintArray

; from C
extern CHello

section .data

    format0 db `%s\n\n`,0
    format1 db `%s %d\n`,0
    message db "Hello World!",0
    number1 dd 1234
    callCount dd 0
    count dd 0

section .bss
    array resd 10

section .text
main:

     ; using printf to print hello world.
     mov rdi, format0
     mov rsi, message
     mov eax, 0
     call printf

     ; for i = 0; i < 3; ++i
top:
     ; three paramters
     mov rdi, format1
     mov rsi, message
     mov rdx, [count]
     mov eax, 0
     call printf

     ;  ++i
     mov rdi, [count]
     inc rdi
     mov [count], rdi
     cmp rdi,3 
     jle top

     ; some no paramter calls in c++
     call Newline
     call PrintHello

     ; and in C
     call CHello

     ; a pass by value
     mov rdi, 100
     call PrintNumber
     call Newline

     ; two paramters with a return value.
     mov rdi, 100
     mov rsi, 200
     call AddEm
     mov r14, rax
     call Newline

     ; and prove it worked
     mov rdi, r14 
     call PrintNumber
     call Newline

     ; pass by reference (well by pointer)
     mov rdi, callCount
     call PrintAndIncrement
     mov rdi, callCount
     call PrintAndIncrement
     mov rdi, callCount
     call PrintAndIncrement
     call Newline

     ; fill an array, pass the address and the size
     mov rdi, array
     mov rsi, 10
     call FillArray
     call Newline

     ; print an array, pass the address and the size
     mov rdi, array
     mov rsi, 10
     call PrintArray
     call Newline

     ; exit
     push 0
     call exit