seperate the core kernel into its own directory

.gitignore

@@ -5,4 +5,5 @@ facepalm/target
 shadeable/target
 qprofiler
 userland/*/target
+kernel/target
 

ableos/Cargo.lock

@@ -35,6 +35,7 @@ dependencies = [
  "facepalm",
  "genfs",
  "hashbrown",
+ "kernel",
  "lazy_static",
  "libwasm",
  "linked_list_allocator",
@@ -270,6 +271,13 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1aab8fc367588b89dcee83ab0fd66b72b50b72fa1904d7095045ace2b0c81c35"
 
+[[package]]
+name = "kernel"
+version = "0.1.1"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"

ableos/Cargo.toml

@@ -49,6 +49,10 @@ test-args = [
 ]
 
 [dependencies]
+
+
+
+
 linked_list_allocator = "0.9.0"
 lliw = "0.2.0"
 # qoi_rs = "*"
@@ -81,6 +85,8 @@ version = "0.8.1"
 default-features = false
 
 
+[dependencies.kernel]
+path = "../kernel"
 
 [dependencies.serde]
 version = "*"

ableos/src/arch/x86_64/interrupts.rs

@@ -67,7 +67,7 @@ extern "x86-interrupt" fn double_fault_handler(
     panic!("EXCEPTION: DOUBLE FAULT\n{:#?}", stack_frame);
 }
 extern "x86-interrupt" fn timer_interrupt_handler(_stack_frame: InterruptStackFrame) {
-    crate::kmain::tick();
+    kernel::tick();
     unsafe {
         PICS.lock()
             .notify_end_of_interrupt(InterruptIndex::Timer.as_u8());

ableos/src/kmain.rs

@@ -35,7 +35,6 @@ use {
 
 lazy_static! {
     // TODO: Change this structure to allow for multiple cores loaded
-    pub static ref TICK: AtomicU64 = AtomicU64::new(0);
     pub static ref BOOT_CONF: BootConfig = boot_conf::BootConfig::new();
 }
 
@@ -107,19 +106,6 @@ pub fn kernel_main() -> ! {
     sloop()
 }
 
-/// called by arch specific timers to tick up all kernel related functions
-pub fn tick() {
-    let mut data = TICK.load(Relaxed);
-    data = data.wrapping_add(1);
-
-    crate::kernel_state::KERNEL_STATE.lock().update_state();
-    // let mut scheduler = SCHEDULER.lock();
-    // scheduler.bump_exec();
-    // drop(scheduler);
-
-    TICK.store(data, Relaxed)
-}
-
 pub fn cpu_socket_startup() {
     let mut cpu_info_socket = SimpleSock::new();
     cpu_info_socket.register_protocol("CPU_INFO".to_string());

ableos/src/lib.rs

@@ -51,7 +51,6 @@ pub mod kernel_state;
 pub mod keyboard;
 pub mod kmain;
 pub mod logger;
-pub mod panic;
 pub mod proto_filetable;
 pub mod relib;
 pub mod scheduler;
@@ -74,7 +73,6 @@ pub use graphics::*;
 pub use kernel_state::*;
 pub use keyboard::*;
 pub use logger::*;
-pub use panic::*;
 pub use proto_filetable::*;
 pub use relib::*;
 pub use scheduler::*;
@@ -82,7 +80,6 @@ pub use utils::*;
 pub use vga_e::*;
 pub use wasm::*;
 
-//////////////////
 pub mod virtio;
 pub use virtio::*;
 
@@ -91,11 +88,14 @@ pub use alias_table::*;
 
 pub mod tests;
 pub use tests::*;
-/*pub mod syscalls;
-pub use syscalls::*;
-*/
+
 pub mod scratchpad;
 pub use scratchpad::*;
 pub mod filesystem;
 
-pub mod messaging;
+///////////////
+/// Kernel ///
+/////////////
+pub use kernel;
+pub use kernel::messaging;
+pub use kernel::panic;

ableos/src/logger.rs

@@ -1,7 +1,7 @@
 use core::sync::atomic::Ordering;
 
-use crate::kmain::TICK;
 use crate::serial_println;
+use kernel::TICK;
 use lliw::{Fg, Reset};
 pub use log::{debug, info, trace, warn};
 use log::{Level, Metadata, Record};

ableos/src/messaging/mod.rs

@@ -1,100 +0,0 @@
-use {
-    crate::{kmain::TICK, proc::PID},
-    alloc::string::String,
-    core::{
-        fmt::{Display, Formatter, Result as FmtResult},
-        result::Result,
-        sync::atomic::Ordering::Relaxed,
-    },
-    libwasm::syscalls::time_calls::SecondsTime,
-    x86_64::instructions::interrupts::{disable, enable},
-};
-#[derive(Debug)]
-pub enum MessagingError {
-    MessageTooLarge,
-}
-
-impl Display for MessagingError {
-    fn fmt(&self, f: &mut Formatter) -> FmtResult {
-        match self {
-            MessagingError::MessageTooLarge => write!(f, "Message too large"),
-        }
-    }
-}
-
-/// Not properly implemented
-pub fn fetch_time() -> SecondsTime {
-    disable();
-    let time = TICK.load(Relaxed);
-    enable();
-
-    SecondsTime {
-        seconds: time,
-        milliseconds: 0,
-    }
-}
-
-pub type MessageSmall = [u8; 2048];
-pub type MessageLarge = [u8; 16384];
-
-pub enum Message {
-    Small(MessageSmall),
-    Large(MessageLarge),
-}
-
-pub struct ProcessMessage {
-    pub to_pid: PID,
-    pub from_pid: PID,
-    pub message: Message,
-    pub sender_time: SecondsTime,
-}
-
-impl ProcessMessage {
-    pub fn new(to_pid: PID, from_pid: PID, message: Message) -> Self {
-        Self {
-            to_pid,
-            from_pid,
-            message,
-            sender_time: fetch_time(),
-        }
-    }
-
-    pub fn new_from_string(
-        to_pid: PID,
-        from_pid: PID,
-        string: String,
-    ) -> Result<Self, MessagingError> {
-        let mut mssg = Message::Small([0u8; 2048]);
-        match string.len() {
-            0..=2047 => {
-                let mut message = [0u8; 2048];
-                for (i, c) in string.chars().enumerate() {
-                    message[i] = c as u8;
-                }
-                mssg = Message::Small(message);
-            }
-
-            2048..=16383 => {
-                let mut message = [0u8; 16384];
-                for (i, c) in string.chars().enumerate() {
-                    message[i] = c as u8;
-                }
-                mssg = Message::Large(message);
-            }
-            _ => return Err(MessagingError::MessageTooLarge),
-        }
-
-        Ok(Self {
-            to_pid,
-            from_pid,
-            message: mssg,
-            sender_time: fetch_time(),
-        })
-    }
-}
-
-pub fn send_sync_message(message: ProcessMessage) {}
-pub fn send_async_message(message: ProcessMessage) {}
-
-pub fn recv_sync_message() {}
-pub fn recv_async_message() {}

ableos/src/panic.rs

@@ -1,22 +0,0 @@
-use {crate::arch::sloop, core::panic::PanicInfo};
-
-/// A function to handle a panic in the kernel.
-/// # Example
-/// ```
-/// use ableos::panic::panic;
-/// panic!("This is a panic!");
-/// ```
-///
-/// # Safety
-/// This function is unsafe because it does not guarantee that the panic is handled.
-#[panic_handler]
-fn panic(info: &PanicInfo) -> ! {
-    error!("{}", info);
-    // help me use facepalm::start_facepalm;
-
-    sloop()
-}
-
-pub fn test_panic() {
-    panic!("test panic!");
-}

ableos/src/rhai_shell/mod.rs

@@ -39,10 +39,10 @@ use x86_64::instructions::interrupts::{disable, enable};
 use crate::wasm_jumploader::interp;
 use crate::{
     arch::{shutdown, sloop},
-    kmain::{tick, TICK},
     systeminfo::{KERNEL_VERSION, RELEASE_TYPE},
     KERNEL_STATE,
 };
+use kernel::TICK;
 
 pub fn afetch() {
     let kstate = KERNEL_STATE.lock();

ableos/src/tests.rs

@@ -10,10 +10,11 @@ use vga::colors::Color16;
 use y_compositor_protocol::Version;
 
 use crate::{
-    kmain::{BOOT_CONF, TICK},
+    kmain::BOOT_CONF,
     network::socket::{SimpleSock, Socket, SocketReturns},
     num_to_vga16, vga_e, VgaBuffer, SCREEN_BUFFER,
 };
+use kernel::TICK;
 
 pub fn run_tests() {
     if BOOT_CONF.run_tests {

ableos/src/wasm_jumploader/host_functions.rs

@@ -37,7 +37,7 @@ impl Externals for HostExternals {
                 use core::sync::atomic::Ordering::*;
 
                 x86_64::instructions::interrupts::disable();
-                let tick_time = crate::kmain::TICK.load(Relaxed);
+                let tick_time = kernel::TICK.load(Relaxed);
                 x86_64::instructions::interrupts::enable();
 
                 let ret = RuntimeValue::I64(tick_time.try_into().unwrap());

kernel/Cargo.lock

@@ -0,0 +1,16 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "kernel"
+version = "0.1.1"
+dependencies = [
+ "lazy_static",
+]
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"

kernel/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+edition = "2021"
+name = "kernel"
+version = "0.1.1"
+
+
+[dependencies]
+lazy_static = "*"

kernel/src/kernel_time.rs

@@ -0,0 +1,10 @@
+//! Time
+
+/// An internal structure that is used to keep track of the time
+pub struct Time {
+    /// The number of seconds since the kernel was started
+    pub seconds: u64,
+
+    /// The number of nanoseconds since the kernel was started
+    pub nanoseconds: u32,
+}

kernel/src/lib.rs

@@ -0,0 +1,25 @@
+#![deny(missing_docs)]
+#![no_std]
+//! The ableOS kernel.
+
+pub mod kernel_time;
+pub mod messaging;
+pub mod proccess;
+
+// #[cfg(no_std)]
+pub mod panic;
+
+use core::sync::atomic::{AtomicU64, Ordering::Relaxed};
+
+/// called by arch specific timers to tick up all kernel related functions
+pub fn tick() {
+    let mut data = TICK.load(Relaxed);
+    data = data.wrapping_add(1);
+
+    TICK.store(data, Relaxed)
+}
+
+lazy_static::lazy_static! {
+    /// The number of ticks since the first CPU was started
+    pub static ref TICK: AtomicU64 = AtomicU64::new(0);
+}

kernel/src/messaging.rs

@@ -0,0 +1,65 @@
+//! Interprocess communication.
+
+use crate::{kernel_time::Time, proccess::PID};
+
+/// 128 Bytes
+pub type Tiny = [u8; 128];
+
+/// 1 KibiByte
+pub type Small = [u8; 1024];
+
+/// 65.536 KibiBytes
+pub type Medium = [u8; 65536];
+
+/// 1MiB
+pub type Large = [u8; 1048576];
+
+/// 16MiB
+pub type Huge = [u8; 16777216];
+
+/// An internal message to be held in a process message
+pub enum Message {
+    /// A Tiny message
+    ///
+    /// The message is 128 bytes long
+    Tiny(Tiny),
+    /// A Small message
+    ///
+    /// The message is 1 KiB long
+    Small(Small),
+    /// A Medium message
+    ///
+    /// The message is 65.536 KiB long
+    Medium(Medium),
+    /// A Large message
+    ///
+    /// The message is 1 MiB long
+    Large(Large),
+    /// A Huge message
+    ///
+    /// The message is 16 MiB long
+    Huge(Huge),
+}
+
+/// A message that can be sent between processes
+pub struct ProcessMessage {
+    /// The sender of the message
+    pub to_pid: PID,
+    /// The receiver of the message
+    pub from_pid: PID,
+    /// The message
+    pub message: Message,
+    /// The time the message was sent
+    pub sender_time: Time,
+    /// The time the message was received
+    pub receiver_time: Time,
+}
+
+#[derive(Debug)]
+/// An enum of all possible errors that can occur when sending a message
+pub enum MessagingError {
+    /// The message is too large to be sent
+    MessageTooLarge,
+    /// The reciever of the message is not valid
+    ProcessNonExistant,
+}

kernel/src/panic.rs

@@ -0,0 +1,8 @@
+//!
+
+use core::panic::PanicInfo;
+
+#[panic_handler]
+fn panic(_info: &PanicInfo) -> ! {
+    loop {}
+}

kernel/src/proccess.rs

@@ -0,0 +1,4 @@
+//! Platform agnostic process
+
+/// A process ID
+pub type PID = u64;