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An experimental Operating System written in stable Rust.

License: Apache License 2.0

Rust 97.15% Makefile 1.61% Assembly 1.23%

antei's Introduction

Hi there!

I'm Hiroki Tokunaga, a worker in Japan.

Skills

These are the skills that either I have tried or I'm using daily and not something I can say I've understood a bit.

My projects

Rust Projects

Ramen OS: A hobby OS supporting xHCI, USB storage reading and writing, and UEFI.
Antei OS: An experimental OS not using any Nightly Rust features.
xhci crate: A Rust library for writing xHCI drivers.
cpio_reader crate: A Rust library for reading CPIO files.
accessor crate: A Rust library for accessing MMIO.
qemu_print crate: A Rust library for printing strings to a console using QEMU's serial port support.
os_units crate: A Rust library providing memory size unit types, Bytes and NumOfPages.

Haskell Projects

Gimlight: A roguelike game.
blob-tileset-generator: A tool to generate a blob tileset from a 1x5 tileset.
Playing with syb: An explanation about a Haskell library syb.
HIndent (as a collaborator): Haskell source code formatter

TypeScript Projects

Programmer Dvorak trainer: A typing practice tool for Programmer Dvorak layout
vscode-gettext (as a collaborator): VSCode plugin for PO files

Coq Projects

Coqfmt: Coq code formatter (written in OCaml).

Krita plugins and programs

Git Docker: A docker for viewing previous editions of currently editing file.
Blob tileset viewer: A docker for converting a 1x5 tileset to a blob tileset and viewing it.
Lock all layers: An extension to lock all leaf layers.
Layer finder: An extension to find layers that colorize a part of or the full selection.
Pen pressure adjuster: A program to adjust the pen pressure curve.

Other contributions

Translation into Japanese

Rust book
Gentoo wiki
KDE projects (Mainly Krita)

Other accounts

My environment

OS: Gentoo Linux
Desktop environment: i3wm
Terminal: rxvt-unicode
Shell: Zsh
Editor: VSCode with Vim key-mapping
Tab size: 4 spaces
Keyboard layout: Programmer Dvorak (en), Kana Input (ja)

antei's People

Contributors

Stargazers

Watchers

antei's Issues

chore: map kernel regions with the `GLOBAL` flag

It means that the page exists in all address spaces.

fix(frame_allocator): do not assume that the passed memory map never contains the overlapped descriptors

The description of UEFI's GetMemoryMap does not mention that each descriptor is exclusive. It means the frame allocator may return a frame that was allocated by the previous alloc call. FrameAllocator::init must merge descriptors that have common areas or reject a memory map that has a descriptor that is overlapped with other descriptors.

chore: map with `NO_EXECUTABLE` the flag if appropriate

"hello world" is not printed

On the debug build, the hello world string is not printed. On the release mode, it is.

fix(process): GPF on multiple processes running

In kernel/src/process/mod.rs:

pub(super) fn init() {
     manager::add_idle();
 
     manager::add(Process::from_initrd("init"));
+    manager::add(Process::from_initrd("init"));
 }
 
 #[derive(Debug)]

It causes a GPF.

feat: boot from GRUB2

Using GRUB2 as a bootloader should be useful because we can pass arguments easily.

chore: implement the stack smash protector

fix: disable interrupts on panic

Not to panic twice.

Handle a panic during owning `WithProtocol`

antei/bootloader/bootx64/src/gop.rs

Line 26 in 24c81ec

r.expect("`GraphicsOutput::set_mode` failed.");

For example, the panic handler will not print the panic message of this sentence because the global system table is locked.

Cannot build `bootx64`: `lld-link: error: undefined symbol: rust_he_personality`

fix(interrupt): handle the error code

The current interrupt handler macro does not consider the error code, causing GPF on exceptions such as page fault because CPU tries to execute fxsave with an unaligned address. Define a macro for exceptions that push an error code.

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