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/cat/src/main.rs

@@ -1,6 +1,7 @@
 //! Prints files: `cat <file>...`.
 
 #![no_std]
+#![forbid(unsafe_code)]
 #![no_main]
 
 extern crate libkos;
@@ -9,7 +10,7 @@ use libkos::fs::{FsError, Storage};
 use libkos::println;
 
 /// Where storage's buffer is mapped.
-const STORAGE_BUF_VA: usize = 0x0180_0000;
+const STORAGE_BUF_VA: types::address::VirtualAddress = types::address::VirtualAddress::from_raw(0x0180_0000);
 
 fn cat(fs: &mut Storage, path: &str) -> Result<(), FsError> {
     let h = fs.open(path.as_bytes())?;
@@ -24,8 +25,9 @@ fn cat(fs: &mut Storage, path: &str) -> Result<(), FsError> {
     fs.close(h)
 }
 
-#[unsafe(no_mangle)]
-extern "C" fn main() {
+libkos::entry!(main);
+
+fn main() {
     let Some(mut fs) = libkos::start::storage().and_then(|ep| Storage::attach(ep, STORAGE_BUF_VA).ok()) else {
         println!("cat: no storage");
         return;