feat: misc

Nicer kernel, now can fetch multiboot2 boot info

members/oxide/src/start_stub.rs

@@ -0,0 +1,16 @@
+//! <https://www.gnu.org/software/grub/manual/multiboot2/multiboot.html>
+
+use core::arch::naked_asm;
+
+#[cfg(target_arch = "x86")]
+#[unsafe(no_mangle)]
+#[unsafe(naked)]
+unsafe extern "C" fn start_stub() -> ! {
+    // In cdecl, protected i386, the first argument is passed in the stack
+
+    // Sadly need to call bcs stack expectations, I wanna make a extern natural compiled thing for
+    // this.
+
+    const _: extern "C" fn(&crate::multiboot2::bif::FixedPart) -> ! = crate::start;
+    naked_asm!("push ebx", "call {}", sym crate::start);
+}