#include "../cpu/cpu_init.h"
#include "../drivers/vga.h"
#include <grub/text_fb_info.h>
#include <stdlib.h>
#include "multiboot.h"

void kmain(multiboot_info_t* header) {
  cpu_init();
  text_fb_info info;
  if (header->flags&MULTIBOOT_INFO_FRAMEBUFFER_INFO&&header->framebuffer_type==2) {
    info.address=(char*)((header->framebuffer_addr&0xFFFFFFFF)+0xC0000000);
    info.width=header->framebuffer_width;
    info.height=header->framebuffer_height;
  } else {
    info.address=(char*)0xC00B8000;
    info.width=80;
    info.height=25;
  }
  vga_init(info);
  vga_write_string("Hello\n");
  asm volatile("  \
    cli; \
    mov $0x23, %ax; \
    mov %ax, %ds; \
    mov %ax, %es; \
    mov %ax, %fs; \
    mov %ax, %gs; \
                  \
    mov %esp, %eax; \
    pushl $0x23; \
    pushl %eax; \
    pushf; \
    pushl $0x1B; \
    push $1f; \
    iret; \
  1: \
    ");
  vga_write_string("UMODE!");
}