tinyos
An UNIX-like toy operating system runs on x86 CPU
Modified gcc and newlib for cross-compile of userland applications are here.
Build
TODO
Features
- Preemptive multitasking
- Paging
- Buddy memory allocation
- Interrupts(PIC)
- Timer(PIT)
- Application runs in usermode
- ELF loader
- Delayed execution(like a work queue in Linux)
- IDE disk driver
- Serial port driver
- RTL8139 NIC driver
- Virtual file system layer
- MINIX3 file system
- FAT32 file system(readonly)
- TCP/IP protocol stack(ported from my tinyip project)
- Socket
- Ported Newlib C library
- (implemented exit, close, execve, fork, fstat, getpid, isatty, link, lseek, open, read, sbrk, stat, unlink, wait and write)
- mruby in the kernel space
Logging in via TCP/IP and running mruby, lua, ls and objdump.
References(random order)
- OSDev.org(https://wiki.osdev.org/Main_Page)
- はじめて読む486(ASCII)
- 0から作るOS開発(http://softwaretechnique.jp/OS_Development/scratchbuild.html)
- はじめてのOSコードリーディング(技術評論社)
- Linuxカーネル2.6解読室(ソフトバンククリエイティブ)
- FreeBSD Architecture Handbook(https://www.freebsd.org/doc/en/books/arch-handbook/index.html)
- オペレーティングシステム II(2010年)筑波大学 情報科学類 講義資料(http://www.coins.tsukuba.ac.jp/~yas/coins/os2-2010/)
- The Newlib Homepage(https://sourceware.org/newlib/)
- Realtek RTL8139DL DataSheet1.2(http://realtek.info/pdf/rtl8139d.pdf)
- RTL8139(A/B) Programming guide(https://www.cs.usfca.edu/~cruse/cs326f04/RTL8139_ProgrammersGuide.pdf)
- minixのファイルシステムからデータを読む。φ(・・*)ゞ ｳｰﾝ カーネルとか弄ったりのメモ(https://kernhack.hatenablog.com/entry/20100501/1272677537)
- FATファイルシステムのしくみと操作法(http://elm-chan.org/docs/fat.html)
- malloc動画（https://www.youtube.com/watch?v=0-vWT-t0UHg)
- Interrupt and Exception Handling on the x86(https://pdos.csail.mit.edu/6.828/2004/lec/lec8-slides.pdf)
- Linux Kernel Documents(https://ja.osdn.net/projects/linux-kernel-docs/)
- Understanding TCP/IP Network Stack & Writing Network Apps(https://www.cubrid.org/blog/understanding-tcp-ip-network-stack)
- ...
License
- Unlicense(Public Domain)