alcedo/kernel/arch/i386/boot.s

33 lines
692 B
ArmAsm

; http://wiki.osdev.org/Bare_Bones_with_NASM
MBALIGN equ 1<<0 ; align loaded modules on page boundaries
MEMINFO equ 1<<1 ; provide memory map
FLAGS equ MBALIGN | MEMINFO ; this is the Multiboot 'flag' field
MAGIC equ 0x1BADB002 ; 'magic number' lets bootloader find the header
CHECKSUM equ -(MAGIC + FLAGS) ; checksum of above, to prove we are multiboot
section .multiboot
align 4
dd MAGIC
dd FLAGS
dd CHECKSUM
section .bss
align 16
stack_bottom:
resb 16384 ; 16 KiB
stack_top:
section .text
global _start:function (_start.end - _start)
_start:
mov esp, stack_top
extern kernel_main
call kernel_main
cli
.hang: hlt
jmp .hang
.end: