%include "MY_IO.h"

extern GET_RANDOM
extern SEED_RANDOM
extern RANDOM_SEED

segment .data
   label1    db  "rdtes "
   size1     equ $ - label1

   label2    db  "getrandom "
   size2     equ $ - label2

   label3    db  "time "
   size3     equ $ - label3

   label4    db  " makes random value "
   size4     equ $ - label4

   label5    db  " % 100 = "
   size5     equ $ - label5

segment .bss
segment .text
   global _start

_start:

    ; generate with method 0
    ;   srand(method = 0)
    mov rdi,0
    call RANDOM_SEED

    mov r15, rax;

    ; cout << "rdtes " << srand(0) << endl;
    mov rdi, label1
    mov rsi, size1
    call PRINT_STRING

    mov rdi, r15
    call PRINT_INT

    call PRINT_NEWLINE

    ; generate with method 1
    mov rdi,1
    call RANDOM_SEED

    mov r15, rax;

    ; cout << "getrandom " << srand(1) << endl;
    mov rdi, label2
    mov rsi, size2
    call PRINT_STRING

    mov rdi, r15
    call PRINT_INT
    call PRINT_NEWLINE

    ; try method 2
    mov rdi,2
    call RANDOM_SEED

    mov r15, rax;

    ; cout << "getrandom " << srand(2) << endl;
    mov rdi, label3
    mov rsi, size3
    call PRINT_STRING

    mov rdi, r15
    call PRINT_INT
    call PRINT_NEWLINE

    ; let's try some random numbers

    ; I would like
    ; for i = 10; i > 0; --i
    ;  cout << i << "makes random value " << rand() << endl;
    ; 
    ; but my print_int adds an endl.
    mov r8, 10
top:
    dec r8

    ; r15 = rand()
    call GET_RANDOM
    mov r15, rax
 
    ;  cout << i << endl;
    mov rdi, r8
    call PRINT_INT

    ; cout << "makes random value " 
    mov rdi, label4
    mov rsi, size4
    call PRINT_STRING

    ; cout << rand() 
    mov rdi, r15
    call PRINT_INT

    mov rdi, label5
    mov rsi, size5
    call PRINT_STRING

    ; % by 100
    mov ecx, 100
    mov rax, r15
    mov edx, 0
    div ecx
    mov rdi, rdx

    ; cout << rand() % 100 << endl;
    call PRINT_INT
    call PRINT_NEWLINE

    test r8,r8
    jnz top
   
    ; exit
    mov eax, SYS_EXIT
    mov edx, SUCCESS
    syscall