From 18c798222a9a28f704a191e5e16b93c873a21ab2 Mon Sep 17 00:00:00 2001
From: Tianhao Wang <shrik3@mailbox.org>
Date: Thu, 18 Apr 2024 04:27:36 +0200
Subject: startup: define multiboot headers in linker script

---
 defs/x86_64-linker.ld | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

(limited to 'defs')

diff --git a/defs/x86_64-linker.ld b/defs/x86_64-linker.ld
index 3d54187..1f53bf8 100644
--- a/defs/x86_64-linker.ld
+++ b/defs/x86_64-linker.ld
@@ -1,8 +1,30 @@
+/* defs for Multiboot headers */
+MB_MAGIC = 0x1badb002;
+MB_FLAGS = 0x3;
+MB_CHKSUM = 0x100000000 - (MB_MAGIC + MB_FLAGS);
+
 SECTIONS
 {
-    PROVIDE (___KERNEL_START__ = .);
     . = 0x100000;     /* system's start address */
 
+	.boot :
+	{
+		header_start = .; LONG(MB_MAGIC)
+		LONG(MB_FLAGS)
+		LONG(MB_CHKSUM)
+		LONG(0)
+		LONG(0)
+		LONG(0)
+		LONG(0)
+		LONG(0)
+		LONG(0)
+		LONG(0)
+		LONG(0)
+		LONG(0)
+		header_end = .;
+  	}
+
+    PROVIDE (___KERNEL_START__ = .);
     .text :
     {
         *(".text")
-- 
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