feat(userspace): terminal server + shell desktop; US keymap w/ shift; libkos allocator multi-page fix; panics print

crates/types/src/display.rs

@@ -74,7 +74,14 @@ pub mod text {
             let len = s.len().min(TEXT_BYTES);
             let mut bytes = [0u8; TEXT_BYTES];
             bytes[..len].copy_from_slice(&s[..len]);
-            Self { x, y, fg, bg, bytes, len }
+            Self {
+                x,
+                y,
+                fg,
+                bg,
+                bytes,
+                len,
+            }
         }
 
         pub fn chars(&self) -> &[u8] {
@@ -85,7 +92,9 @@ pub mod text {
             let (lo, hi) = self.bytes.as_chunks::<8>().0.split_at(1);
             [
                 TEXT | self.len << 8 | (self.fg.raw() as usize) << 16,
-                self.x.raw() as usize | (self.y.raw() as usize) << 16 | (self.bg.raw() as usize) << 32,
+                self.x.raw() as usize
+                    | (self.y.raw() as usize) << 16
+                    | (self.bg.raw() as usize) << 32,
                 u64::from_le_bytes(lo[0]) as usize,
                 u64::from_le_bytes(hi[0]) as usize,
             ]
@@ -117,7 +126,13 @@ pub mod text {
 
         #[test]
         fn text_round_trips() {
-            let t = Text::new(ScreenCoord::new(1272), ScreenCoord::new(784), Color::rgb(1, 2, 3), Color::rgb(4, 5, 6), b"$ ls -la /home/x");
+            let t = Text::new(
+                ScreenCoord::new(1272),
+                ScreenCoord::new(784),
+                Color::rgb(1, 2, 3),
+                Color::rgb(4, 5, 6),
+                b"$ ls -la /home/x",
+            );
             assert_eq!(Text::from_words(t.words()), Some(t));
             assert_eq!(Text::new(t.x, t.y, t.fg, t.bg, &[b'a'; 40]).len, TEXT_BYTES);
         }

crates/types/src/lib.rs

@@ -19,4 +19,5 @@ pub mod spawn;
 pub mod start_arg;
 pub mod storage;
 pub mod syscall_abi;
+pub mod terminal;
 pub mod time;

crates/types/src/terminal.rs

@@ -0,0 +1,7 @@
+//! The terminal's requests beyond text output, which is the log protocol
+//! (`types::log`): a program given the terminal as its log prints there.
+
+/// Reply: the next chunk of a typed line as a text message (`types::log`);
+/// the line's last chunk ends with `\n`. Blocks until a line is entered.
+pub const READ: usize = 10;
+pub const CLEAR: usize = 11;