51 lines
2.4 KiB
Markdown
51 lines
2.4 KiB
Markdown
# dmzOS
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## About
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**dmzOS** is an operating system written by a group of computer enthusiasts gathered around [Decentrala](https://decentrala.org/). You are free to explore, learn, and contribute!
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### Description
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* Written from scratch in C and asm.
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* POSIX-compliant (as we are aspiring to [Stan Dard](https://wiki.osdev.org/Stan_Dard)).
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* For the amd64 architecture.
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* Extensively documented.
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### Goals
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* Sharpen low-level programming skills.
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* Familiarize with amd64 architecture details.
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* Have fun along the way!
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### Success criteria
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* Run vim on the OS.
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### Rules
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* Please provide an adequate entry in the Wiki for each non-trivial code contribution.
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To learn more about the project, please refer to the [Wiki](https://gitea.dmz.rs/sborovic/dmzOS/wiki).
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## DevOps
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### Development environment
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Essential software (plus dependencies) that are needed for the development are available through a custom Ubuntu-based Docker image (located in `Dockerfiles/dockerfile.c_toolchain` as well as on Docker Hub). This includes:
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- `gcc`: *The GNU Compiler Collection.*
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- `indent` GNU C code formatter.
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- `clang`: a compiler front end for the C, C++, Objective-C, and Objective-C++ programming languages
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- `clang-format`: a tool to automatically format C/C++/Objective-C code
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- `gdb`: *The GNU Debugger.*
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- `make`: a tool which controls the generation of executables and other non-source files of a program from the program's source files.
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- `objdump`: a command-line program for displaying various information about object files.
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- `nasm`: *The Netwide Assembler* is an assembler and disassembler for the Intel x86 architecture.
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- `xxd`: a command-line program that may be used to manage, convert, and display binary files.
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- `ld`: *The GNU Linker*.
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- `lld`: a linker from the LLVM project that is a drop-in replacement for system linkers and runs much faster than them.
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- `vim`: a highly configurable text editor.
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> *Note*
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> A `.vimrc` file with a rule to format code on buffer save in line with *Kernighan and Ritchie style* (with 4-space indentation) comes pre-installed inside the image.
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Booting the latest `.iso` image of *dmzOS* is done using a [Dockerized QEMU](https://github.com/qemus/qemu-docker).
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#### Command cheatsheet
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* To get into a `bash` shell that is bound to the `dmzOS` directory:
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```docker
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docker-compose run --rm c_toolchain
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```
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> *Note*
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> Any changes in the container's `dmzOS` directory will be reflected in the local `dmzOS` directory.
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