35 lines
974 B
C
35 lines
974 B
C
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#include "terminal.c"
|
|
|
|
/* 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();
|
|
|
|
terminal_putchar('H');
|
|
terminal_putchar('e');
|
|
terminal_putchar('l');
|
|
terminal_putchar('l');
|
|
terminal_putchar('o');
|
|
|
|
/* Newline support is left as an exercise. */
|
|
terminal_setcolor(vga_entry_color(VGA_COLOR_GREEN, VGA_COLOR_BLACK));
|
|
terminal_writestring(" kernel");
|
|
terminal_setcolor(vga_entry_color(VGA_COLOR_LIGHT_GREY, VGA_COLOR_BLACK));
|
|
terminal_writestring(" World!\n");
|
|
terminal_writestring("Newlines!");
|
|
} |