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; MIT License, Copyright (c) 2021 Marvin Borner
bits 32
%define MULTIBOOT_MAGIC 0x1badb002
%define MULTIBOOT_PAGE_ALIGN 0x1
%define MULTIBOOT_MEMORY_INFO 0x2
%define MULTIBOOT_VIDEO_MODE 0x4
%define MULTIBOOT_FLAGS (MULTIBOOT_PAGE_ALIGN | MULTIBOOT_MEMORY_INFO | MULTIBOOT_VIDEO_MODE)
%define MULTIBOOT_CHECKSUM -(MULTIBOOT_MAGIC + MULTIBOOT_FLAGS)
section .text
align 4
dd MULTIBOOT_MAGIC
dd MULTIBOOT_FLAGS
dd MULTIBOOT_CHECKSUM
; MULTIBOOT_MEMORY_INFO
dd 0x00000000
dd 0x00000000
dd 0x00000000
dd 0x00000000
dd 0x00000000
; MULTIBOOT_VIDEO_MODE
dd 0x00000000
dd 1920
dd 1200
dd 32
global boot_entry
extern kernel_main
boot_entry:
mov esp, stack_top
push esp
push ebx
push eax
cli
call kernel_main
hlt
jmp $
section .bss
align 32
stack_bottom:
resb 0x4000
stack_top:
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