38 lines
684 B
NASM
38 lines
684 B
NASM
%define MULTIBOOT_HEADER_MAGIC 0x1badb002
|
|
|
|
; Flags:
|
|
;
|
|
; bit 2: request framebuffer
|
|
%define MULTIBOOT_HEADER_FLAGS (1 << 2)
|
|
|
|
extern multiboot_main
|
|
|
|
global _start
|
|
|
|
section .multiboot_header
|
|
|
|
align 4
|
|
header_start:
|
|
dd MULTIBOOT_HEADER_MAGIC ; Magic number (multiboot 1)
|
|
dd MULTIBOOT_HEADER_FLAGS ; Flags
|
|
dd -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) ; Checksum
|
|
header_end:
|
|
|
|
section .text
|
|
bits 32
|
|
|
|
_start:
|
|
cli
|
|
|
|
mov esp, stack_top
|
|
|
|
push ebx
|
|
push eax
|
|
|
|
call multiboot_main ; Jump to our multiboot test kernel
|
|
|
|
section .bss
|
|
stack_bottom:
|
|
resb 4096 * 16
|
|
stack_top:
|