main.c

#include "screen.h"
#include "scheduler.h"
#include "heap.h"
#include "paging.h"
#include "fs.h"

void processA();
void processB();
void processC();
void processD();

void print_fs()
{
    char** files = list_files();

    for (int curr_idx = 0; curr_idx < get_files_number(); curr_idx++) {
        print("File: ");
        print(files[curr_idx]);
        println();
    }

    print("==");
    println();
}

void kernel_main()
{
    heap_init();
    paging_init();
    screen_init();
    process_init();
    scheduler_init();
    filesystem_init();

    print("Welcome to 539kernel!");
    println();
    print("We are now in Protected-mode");
    println();
    printi(539);
    println();
    
    process_create(&processA);
    process_create(&processB);
    process_create(&processC);
    process_create(&processD);

    char* data = kalloc(512);
    strcpy(data, "The contents of the first file on 539filesystem");
    create_file("first_file", data);

    char* data2 = kalloc(512);
    strcpy(data2, "SECOND FILE in 539filesystem");
    create_file("second_file", data2);

    char* data3 = kalloc(512);
    strcpy(data3, "THIRD FILE in 539filesystem");
    create_file("third_file", data3);

    print(read_file("first_file")); println();
    print(read_file("second_file")); println();
    print(read_file("third_file")); println();

    print_fs();
    delete_file("first_file");
    print_fs();

    while (1);
}

void interrupt_handler(int interrupt_number) 
{
    println();
    print("Interrupt Received ");
    printi(interrupt_number);
}

void processA()
{
    print("Process A,");

    while(1)
        asm("mov $5390, %eax");
}

void processB()
{
    print("Process B,");

    while(1)
        asm("mov $5391, %eax");
}

void processC()
{
    print("Process C,");

    while(1)
        asm("mov $5392, %eax");
}

void processD()
{
    print("Process D,");

    while(1)
        asm("mov $5393, %eax");
}