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github.com/SamyPesse/How-to-Make-a-Computer-Operating-System @0.1.0

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849 symbols 1,750 edges 372 files 103 documented · 12% ● updated 4y ago0.1.0 · 2014-06-06★ 22,41445 open issues

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README

How to Make a Computer Operating System

Online book about how to write a computer operating system in C/C++ from scratch.

Caution: This repository is a remake of my old course. It was written several years ago as one of my first projects when I was in High School, I'm still refactoring some parts. The original course was in French and I'm not an English native. I'm going to continue and improve this course in my free-time.

Book: An online version is available at https://www.gitbook.io/book/SamyPesse/how-to-create-an-operating-system (PDF and ePub). It was been generated using GitBook.

Source Code: All the system source code will be stored in the src directory. Each step will contain links to the different related files.

Contributions: This course is open to contributions, feel free to signal errors with issues or directly correct the errors with pull-requests.

Questions: Feel free to ask any questions by adding issues. Please don't email me.

You can follow me on Twitter @SamyPesse or support me on Flattr or Gittip.

What kind of OS are we building?

The goal is to build a very simple UNIX-based operating system in C++, not just a "proof-of-concept". The OS should be able to boot, start a userland shell, and be extensible.

Core symbols most depended-on inside this repo

outb

called by 43

src/kernel/arch/x86/io.cc

called by 43

src/kernel/arch/x86/io.cc

kmalloc

called by 38

src/kernel/arch/x86/alloc.cc

memcpy

called by 38

src/kernel/runtime/memory.cc

kfree

called by 37

src/kernel/arch/x86/alloc.cc

bufcon_putc

called by 28

src/sdk/src/libc/src/stdio/support_bufio.c

getArg

called by 28

src/kernel/arch/x86/architecture.cc

strlen

called by 27

src/sdk/src/libc/src/string/strlen.c

Shape

Function 434

Method 266

Class 144

Enum 5

Languages

C++57%

C43%

Modules by API surface

src/kernel/core/file.cc34 symbols

src/kernel/core/process.cc32 symbols

src/kernel/arch/x86/x86.cc20 symbols

src/kernel/modules/ext2.cc19 symbols

src/kernel/arch/x86/vmm.cc18 symbols

src/sdk/src/libc/src/trio/trio.c17 symbols

src/kernel/arch/x86/architecture.cc17 symbols

src/kernel/core/api_posix.cc16 symbols

src/kernel/modules/ide.cc15 symbols

src/kernel/modules/bochsvbe.cc15 symbols

src/kernel/core/user.cc15 symbols

src/kernel/runtime/cxx.cc14 symbols

For agents

$ claude mcp add How-to-Make-a-Computer-Operating-System \
  -- python -m otcore.mcp_server <graph>

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