42_KFS/src/kernel.c

#include "terminal.h"
#include "kprintf.h"

#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

/* Check if the compiler thinks you are targeting the wrong operating system. */
#if defined(__linux__)
#error                                                                         \
    "You are not using a cross-compiler, you will most certainly run into trouble"
#endif

/* This tutorial will only work for the 32-bit ix86 targets. */
#if !defined(__i386__)
#error "This tutorial needs to be compiled with a ix86-elf compiler"
#endif

void kernel_main(void) {
  /* Initialize terminal interface */
  terminal_initialize();

  /* Newline support is left as an exercise. */
  kprintf(0, "Hello world!");
}