refactor: unsafe only in adapter + libkos; forbid(unsafe_code) everywhere else; libkos Window (volatile, bounds-checked MMIO/DMA/shared mem), entry!, thread::spawn; MapRegion returns pages; kernel const-built (with_cores/install_platform); newtype addrs

crates/apps/snake/src/lib.rs

@@ -1,4 +1,5 @@
 #![no_std]
+#![forbid(unsafe_code)]
 
 pub mod game;
 pub mod renderer;

crates/apps/snake/src/main.rs

@@ -1,4 +1,5 @@
 #![no_std]
+#![forbid(unsafe_code)]
 #![no_main]
 
 extern crate libkos;
@@ -39,8 +40,9 @@ fn flush() {
     display_send(&DisplayRequest::Flush);
 }
 
-#[unsafe(no_mangle)]
-extern "C" fn main() {
+libkos::entry!(main);
+
+fn main() {
     if libkos::start::display().is_none() {
         libkos::println!("snake: needs the display (see /bin/snake.manifest)");
         return;