void kprintstr(char* str);
void khang();
void kdelay(int mills);
/* HACK. kmain has to come first because of flat binary */

void kmain(void)
{
    char* k_msg = "Hello world from 32-bit C kernel!"; /*33 characters*/
    kprintstr(k_msg);
}

void kdelay(int millis)
{
    for(int i = 0; i < millis; i++)
    {
        for(int j = 0; j < millis; j++)
        {

        }
    }
}

void kprintstr(char* str)
{
    /* 80x25 */
    char* ch = (char*)0xb8000 + 2 * 80 * 21;
    char color = 0xF;
    char swap[] = {'|','\\', '/', '\\', '/', '|', '|'};
    while(*str)
    {
        *ch = *str;
        ch++;
        *ch = color; /* white character */
        ch++;
        str++;
    }
    ch = (char*)0xb8000 + 2 * 80 * 22;
    while(1)
    {
        int i = 0;
        while(1)
        {
            /*display 10 characters doing*/
            for(int j = 0; j < 80 * 3; j++)
            {
                *(ch + j * 2) = swap[(i * 1337 + j * 33 ) % 3];
                *(ch + j * 2+ 1) = color;
                color = (color + 1) % 0xF;
            }
            kdelay(5000);
            i++;
        }
    }
}