From 9a2d5cbdc7972d1d5bfb1ea93f82f66d113faa17 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Wed, 7 Jul 2021 19:13:11 +0200
Subject: Strange implementations

---
 example/mb2/entry.asm | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 example/mb2/entry.asm

(limited to 'example/mb2/entry.asm')

diff --git a/example/mb2/entry.asm b/example/mb2/entry.asm
new file mode 100644
index 0000000..063ac74
--- /dev/null
+++ b/example/mb2/entry.asm
@@ -0,0 +1,51 @@
+; MIT License, Copyright (c) 2021 Marvin Borner
+
+bits 32
+
+MAGIC equ 0xe85250d6
+ARCHITECHTURE equ 0
+HEADER_LENGTH equ multiboot_header_end - multiboot_header_start
+CHECKSUM equ 0x100000000 - (MAGIC + ARCHITECHTURE + HEADER_LENGTH)
+
+multiboot_header_start:
+	dd MAGIC
+	dd ARCHITECHTURE
+	dd HEADER_LENGTH
+	dd CHECKSUM
+entry_address_tag_start:
+	dw 3
+	dw 0
+	dd entry_address_tag_end - entry_address_tag_start
+	dd 0 ; low
+	dd boot_entry ; high
+entry_address_tag_end:
+framebuffer_tag_start:
+        dw 5
+        dw 0
+        dd framebuffer_tag_end - framebuffer_tag_start
+        dd 1920
+        dd 1200
+        dd 32
+framebuffer_tag_end:
+	dw 0
+	dw 0
+	dd 8
+multiboot_header_end:
+
+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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