init version

members/oxide/src/multiboot2.rs

@@ -0,0 +1,42 @@
+pub const HEADER_MAGIC: u32 = 0xe85250d6;
+
+#[repr(C, packed)]
+#[derive(Clone, Copy, PartialEq, Eq)]
+pub struct Header {
+    magic: u32,
+    arch: HeaderArchitecture,
+    length: u32,
+    checksum: i32,
+    // optional flags
+    typ: u16,
+    flags: u16,
+    size: u32,
+}
+
+impl Header {
+    pub const fn new() -> Self {
+        let length = size_of::<Self>() as _;
+        let arch = HeaderArchitecture::ProtectedI386;
+        Header {
+            magic: HEADER_MAGIC,
+            arch,
+            length,
+            checksum: -(HEADER_MAGIC as i32 + length as i32 + arch as u32 as i32),
+            typ: 0,
+            flags: 0,
+            size: 0,
+        }
+    }
+}
+
+impl Default for Header {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+#[repr(u32)]
+#[derive(Clone, Copy, PartialEq, Eq)]
+pub enum HeaderArchitecture {
+    ProtectedI386 = 0,
+}