From e88de0162cff8bbad80972c1b92355b9d2db0213 Mon Sep 17 00:00:00 2001
From: James Barnett <noreply@jamesbarnett.xyz>
Date: Tue, 28 Aug 2018 14:58:53 +0100
Subject: Add bootable kernel with basic print function

---
 kernel-bootstrap.asm | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 kernel-bootstrap.asm

(limited to 'kernel-bootstrap.asm')

diff --git a/kernel-bootstrap.asm b/kernel-bootstrap.asm
new file mode 100644
index 0000000..9e3b10e
--- /dev/null
+++ b/kernel-bootstrap.asm
@@ -0,0 +1,22 @@
+bits 32                   ; nasm 32-bit mode
+section .text
+
+                          ; multiboot header
+align 4
+dd 0x1BADB002
+dd 0x00
+dd - (0x1BADB002 + 0x00)  ; checksum
+
+global start
+extern kernel_entrypoint
+
+                          ; call kernel and halt
+start:
+  cli                     ; disable interrups
+  mov esp, stack_space
+  call kernel_entrypoint
+  hlt
+
+section .bss
+resb 8192
+stack_space:
\ No newline at end of file
-- 
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