- added a new libary libm containing procedural macros for the kernel.

these should be used to include external files and resources in the kernel binary
  at compile time.
  - libm currently supports loading psf-1 formatted fonts
- added two fonts that are included in the binary at compile time
- refactored libk to make the crate structure more organised and maintainable in future.
  new structure:
    - drivers   (hardware interaction)
    - resources (consts and statics included either manually or via macros)
    - std       (standard functions for higher level interaction with the os, for example creating windows)
- added geometry.rs
  - provides the Vec2<T> struct for use with dimensions, coordinates etc.
- added window.rs
  - provides the Window struct for rendering the state of an application to the screen
- added application.rs
  - provides the Application trait for custom programs to implement in order to run

libk/Cargo.toml

@@ -19,3 +19,4 @@ futures-util = { version = "0.3.31", default-features = false, features = [
     "alloc",
 ] }
 linked_list_allocator = "0.10.5"
+libm = { path = "../libm" }

libk/src/drivers/io/ascii/mod.rs

@@ -2,11 +2,9 @@ use core::fmt;
 use spin::{Lazy, Mutex};
 use x86_64::instructions::interrupts;
 
-pub use super::framebuffer::screensize_px;
-use super::framebuffer::{Colour, FRAMEBUFFER_WRITER};
+use super::framebuffer::{colour::Colour, display::FRAMEBUFFER_WRITER};
 
-mod font;
-use font::FONT;
+use crate::resources::font::{FONT_CP850_8X16, Font};
 
 static FONT_WIDTH: u32 = 8;
 static FONT_HEIGHT: u32 = 16;
@@ -19,6 +17,7 @@ pub fn screensize_chars() -> (u32, u32) {
 }
 
 pub struct Writer {
+    font: &'static Font,
     /// Measured in chars not pixels.
     screen_width: u32,
     /// Measured in chars not pixels.
@@ -48,6 +47,7 @@ impl Writer {
                 panic!("Framebuffer writer not initialized.");
             },
             |writer| Self {
+                font: &FONT_CP850_8X16,
                 screen_width: writer.width() / 8,
                 screen_height: writer.height() / 16,
                 text_line: 0,
@@ -60,6 +60,10 @@ impl Writer {
         )
     }
 
+    pub fn set_font(&mut self, font: &'static Font) {
+        self.font = font;
+    }
+
     pub fn write_glyph(&mut self, c: u16) {
         if c as u8 == b'\n' {
             self.newline();
@@ -67,7 +71,7 @@ impl Writer {
         }
 
         // get the character data from the font array. -- each byte is a row of pixels
-        let data: &[u8] = &FONT[c as usize * 16..(c as usize + 1) * 16];
+        let data: &[u8] = &self.font.0[c as usize];
 
         if let Some(writer) = FRAMEBUFFER_WRITER.lock().as_mut() {
             for (row, line) in data.iter().enumerate().take(16) {
@@ -190,7 +194,7 @@ macro_rules! println_log {
 
 #[macro_export]
 macro_rules! print_log {
-	($($arg:tt)*) => ($crate::io::ascii::_print_log(format_args!($($arg)*)));
+	($($arg:tt)*) => ($crate::_print_log(format_args!($($arg)*)));
 }
 
 #[macro_export]
@@ -201,7 +205,7 @@ macro_rules! println {
 
 #[macro_export]
 macro_rules! print {
-	($($arg:tt)*) => ($crate::io::ascii::_print(format_args!($($arg)*)));
+	($($arg:tt)*) => ($crate::_print(format_args!($($arg)*)));
 }
 
 #[macro_export]

libk/src/drivers/io/framebuffer/display.rs

@@ -4,9 +4,7 @@ use limine::request::FramebufferRequest;
 #[unsafe(link_section = ".requests")]
 static FRAMEBUFFER_REQUEST: FramebufferRequest = FramebufferRequest::new();
 
-mod colour;
-
-pub use colour::Colour;
+use super::colour::Colour;
 use core::panic;
 
 use limine::framebuffer::Framebuffer;

libk/src/drivers/io/framebuffer/mod.rs

@@ -0,0 +1,2 @@
+pub mod colour;
+pub mod display;

libk/src/drivers/io/serial.rs

@@ -5,14 +5,14 @@ use core::{
 use spin::{Lazy, Mutex};
 
 #[macro_export]
-macro_rules! serial_println {
-    () => ($crate::serial_print!("\n"));
-    ($($arg:tt)*) => ($crate::io::serial_print!("{}\n", format_args!($($arg)*)));
+macro_rules! serial_print {
+    ($($arg:tt)*) => ($crate::_serial_write(format_args!($($arg)*)));
 }
 
 #[macro_export]
-macro_rules! serial_print {
-    ($($arg:tt)*) => ($crate::io::serial::_serial_write(format_args!($($arg)*)));
+macro_rules! serial_println {
+    () => ($crate::serial_print!("\n"));
+    ($($arg:tt)*) => (serial_print!("{}\n", format_args!($($arg)*)));
 }
 
 use super::port::{inb, outb};

libk/src/drivers/kalloc/mod.rs

@@ -0,0 +1 @@
+pub mod allocator;

libk/src/drivers/mod.rs

@@ -0,0 +1,3 @@
+pub mod io;
+pub mod kalloc;
+pub mod scheduling;

libk/src/drivers/scheduling/task.rs

@@ -1,10 +1,8 @@
-use alloc::boxed::Box;
-use alloc::collections::{BTreeMap, VecDeque};
-use alloc::sync::Arc;
-use alloc::task::Wake;
+use alloc::{boxed::Box, collections::BTreeMap, sync::Arc, task::Wake};
+
 use core::sync::atomic::AtomicU64;
+use core::task::Waker;
 use core::task::{Context, Poll};
-use core::task::{RawWaker, Waker};
 use core::{future::Future, pin::Pin};
 use crossbeam::queue::ArrayQueue;
 use x86_64::instructions::interrupts::{self, enable_and_hlt};

libk/src/kalloc.rs

@@ -1,3 +0,0 @@
-pub mod allocator;
-
-pub use self::allocator::init_heap;

libk/src/lib.rs

@@ -1,4 +1,5 @@
 #![no_std]
+#![allow(async_fn_in_trait)]
 #![warn(tail_expr_drop_order)]
 #![warn(clippy::correctness, clippy::perf, clippy::nursery)]
 // alloc
@@ -8,11 +9,22 @@
 
 extern crate alloc;
 
-pub mod io;
-pub mod kalloc;
-pub mod scheduling;
+pub mod drivers;
+pub mod resources;
+pub mod std;
 
-/// Re-exports most of the IO macros.
+/// Re-exports most of the IO macros as well as standard allocation stuff
 pub mod prelude {
+    pub use crate::drivers::io::ascii::{_print, _print_log};
     pub use crate::{print, print_log, println, println_log, serial_print, serial_println};
+    pub use alloc::{
+        boxed::Box,
+        string::{String, ToString},
+        vec::Vec,
+    };
 }
+
+pub use crate::drivers::io::{
+    ascii::{_print, _print_log},
+    serial::_serial_write,
+};

libk/src/resources/font/mod.rs

@@ -0,0 +1,12 @@
+use libm::include_font;
+
+pub mod ibm_vga_8x16;
+
+pub static FONT_SPLEEN_8X16: Font = Font(include_font!(
+    "/home/zxq5/Projects/OSDev/FoundryOS/libk/resources/font/spleen-8x16.psf"
+));
+pub static FONT_CP850_8X16: Font = Font(include_font!(
+    "/home/zxq5/Projects/OSDev/FoundryOS/libk/resources/font/cp850-8x16.psf"
+));
+
+pub struct Font(pub [[u8; 16]; 512]);

libk/src/resources/mod.rs

@@ -0,0 +1 @@
+pub mod font;

libk/src/std/application/application.rs

@@ -0,0 +1,14 @@
+use crate::prelude::*;
+
+pub trait Application {
+    type Output;
+
+    async fn run(&mut self, args: Vec<String>) -> Result<Self::Output, Error>;
+}
+
+#[derive(Debug)]
+pub enum Error {
+    UnknownCommand(String),
+    ApplicationFailed(String),
+    KernelError(String),
+}

libk/src/std/application/mod.rs

@@ -0,0 +1,2 @@
+pub mod application;
+pub mod window;

libk/src/std/application/window.rs

@@ -0,0 +1,74 @@
+use crate::{prelude::*, std::maths::geometry::Vec2};
+
+pub struct Window {
+    dimensions: Vec2<usize>,
+    position: Vec2<usize>,
+    bordered: bool,
+    opened: bool,
+    title: String,
+}
+
+impl Window {
+    pub const fn new() -> Window {
+        Window {
+            dimensions: Vec2::new(0, 0),
+            position: Vec2::new(0, 0),
+            bordered: true,
+            opened: false,
+            title: String::new(),
+        }
+    }
+
+    pub fn is_bordered(&self) -> bool {
+        self.bordered
+    }
+
+    pub fn is_open(&self) -> bool {
+        self.opened
+    }
+
+    pub fn open(&mut self) {
+        self.opened = true;
+    }
+
+    pub fn close(&mut self) {
+        self.opened = false;
+    }
+
+    // some basic getters and setters for utility.
+    pub fn title(&self) -> &str {
+        &self.title
+    }
+
+    pub fn dimensions(&self) -> Vec2<usize> {
+        self.dimensions
+    }
+
+    pub fn position(&self) -> Vec2<usize> {
+        self.position
+    }
+
+    pub fn set_title(&mut self, title: String) {
+        self.title = title;
+    }
+
+    pub fn move_window(&mut self, offset: Vec2<usize>) {
+        self.position += offset;
+    }
+
+    pub fn set_position(&mut self, position: Vec2<usize>) {
+        self.position = position;
+    }
+
+    pub fn set_dimensions(&mut self, dimensions: Vec2<usize>) {
+        self.dimensions = dimensions;
+    }
+}
+
+impl Drop for Window {
+    fn drop(&mut self) {
+        if self.opened {
+            self.close();
+        }
+    }
+}

libk/src/std/maths/geometry.rs

@@ -0,0 +1,73 @@
+use core::ops::{AddAssign, DivAssign, MulAssign, SubAssign};
+
+pub trait Coordinate:
+    Copy + Clone + PartialEq + AddAssign + MulAssign + SubAssign + DivAssign
+{
+}
+
+impl Coordinate for usize {}
+impl Coordinate for isize {}
+impl Coordinate for u8 {}
+impl Coordinate for i8 {}
+impl Coordinate for u16 {}
+impl Coordinate for i16 {}
+impl Coordinate for u32 {}
+impl Coordinate for i32 {}
+impl Coordinate for u64 {}
+impl Coordinate for i64 {}
+impl Coordinate for u128 {}
+impl Coordinate for i128 {}
+impl Coordinate for f32 {}
+impl Coordinate for f64 {}
+
+#[derive(Copy, Clone, PartialEq, PartialOrd, Debug)]
+pub struct Vec2<T: Coordinate> {
+    x: T,
+    y: T,
+}
+
+impl<T: Coordinate> Vec2<T> {
+    pub const fn new(x: T, y: T) -> Self {
+        Self { x, y }
+    }
+
+    pub fn into<S: Coordinate + From<T>>(&self) -> Vec2<S> {
+        Vec2::new(self.x.clone().into(), self.y.clone().into())
+    }
+
+    pub fn x(&self) -> T {
+        self.x
+    }
+
+    pub fn y(&self) -> T {
+        self.y
+    }
+}
+
+impl<T: Coordinate> AddAssign for Vec2<T> {
+    fn add_assign(&mut self, rhs: Self) {
+        self.x += rhs.x;
+        self.y += rhs.y;
+    }
+}
+
+impl<T: Coordinate> SubAssign for Vec2<T> {
+    fn sub_assign(&mut self, rhs: Self) {
+        self.x -= rhs.x;
+        self.y -= rhs.y;
+    }
+}
+
+impl<T: Coordinate> MulAssign<T> for Vec2<T> {
+    fn mul_assign(&mut self, rhs: T) {
+        self.x *= rhs;
+        self.y *= rhs;
+    }
+}
+
+impl<T: Coordinate> DivAssign<T> for Vec2<T> {
+    fn div_assign(&mut self, rhs: T) {
+        self.x /= rhs;
+        self.y /= rhs;
+    }
+}

libk/src/std/maths/mod.rs

@@ -0,0 +1 @@
+pub mod geometry;

libk/src/std/mod.rs

@@ -0,0 +1,2 @@
+pub mod application;
+pub mod maths;