From 12302df8b3f59de46f9f20ecae57ccf874d0c867 Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Sat, 20 Mar 2021 16:24:14 +0200
Subject: Add allocator

---
 src/kernel/multiboot.cc | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 src/kernel/multiboot.cc

(limited to 'src/kernel/multiboot.cc')

diff --git a/src/kernel/multiboot.cc b/src/kernel/multiboot.cc
new file mode 100644
index 0000000..024916e
--- /dev/null
+++ b/src/kernel/multiboot.cc
@@ -0,0 +1,10 @@
+#include <multiboot2.h>
+#include <types.h>
+
+uint32_t check_multiboot(uint32_t mb_magic, uint32_t mb_addr) {
+  if (mb_magic != MULTIBOOT2_BOOTLOADER_MAGIC) return 0;
+  if (mb_addr & 7) return 0;
+
+  const uint32_t size = *reinterpret_cast<uint32_t*>(mb_addr);
+  return size;
+}
-- 
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