global loader 				; entry symbol for ELF
extern kmain

MAGIC_NUMBER 	equ 0x1BADB002		; magic number constant
FLAGS		equ 0x3
CHECKSUM	equ -(MAGIC_NUMBER + FLAGS)	; calculate the checksum
KERNEL_STACK_SIZE equ 4096

section .multiboot
align 4 				; code must be 4 byte aligned
	dd MAGIC_NUMBER
	dd FLAGS
	dd CHECKSUM

section .bss
align 4
kernel_stack:
	resb KERNEL_STACK_SIZE

section .text
loader:
	mov esp, kernel_stack + KERNEL_STACK_SIZE

	call kmain

	;cli
loop:	hlt
	jmp loop