58 lines
2.4 KiB
Markdown
58 lines
2.4 KiB
Markdown
# Pluto
|
|
|
|
[](https://dev.azure.com/samueltebbs/samueltebbs/_build/latest?definitionId=1&branchName=develop)
|
|
|
|
Pluto is a kernel written almost entirely in [Zig](https://github.com/ziglang/zig) and supports x86, with aarch64 and x64 backends being planned.
|
|
|
|
|
|
|
|
## Goals
|
|
* **Should be written in Zig as much as possible**. Assembly should only be used where required for functionality or performance reasons.
|
|
* **Light and performant**. The kernel should be usable both on embedded and desktop class CPUs, made possible by it being lightweight and modular.
|
|
* **Basic utilities will be written in Zig**. This includes a basic text editor and shell, and will be part of the filsystem external to the kernel itself.
|
|
* **Easy to port**. The kernel is oblivous to the underlying architecture, meaning that ports only need to implement the defined interface and they should work without a hitch.
|
|
|
|
All of these goals will benefit from the features of Zig.
|
|
|
|
## Build
|
|
Requires a master build of Zig ([downloaded](https://ziglang.org/download) or [built from source](https://github.com/ziglang/zig#building-from-source)) *xorriso* and the grub tools (such as *grub-mkrescue*). A gdb binary compatible with your chosen target is required to run the kernel (e.g. *qemu-system-i386*).
|
|
```
|
|
zig build
|
|
```
|
|
|
|
## Run
|
|
```
|
|
zig build run
|
|
```
|
|
|
|
## Debug
|
|
Launch a gdb instance and connect to qemu.
|
|
```
|
|
zig build debug
|
|
```
|
|
|
|
## Test
|
|
Run the unitests or runtime tests.
|
|
```
|
|
zig build test
|
|
```
|
|
|
|
## Options
|
|
* `-Ddebug=`: Boolean (default `false`).
|
|
* **build**: Build with debug info included or stripped (see #70 for planned changes).
|
|
* **run**: Wait for a gdb connection before executing.
|
|
* `-Drt-test=`: Boolean (default `false`).
|
|
* **build**: Build with runtime testing enabled. Makes the kernel bigger and slower but tests important functionality.
|
|
* **test**: Run the runtime testing script instead of the unittests. Checks for the expected log statements and fails if any are missing.
|
|
|
|
## Contribution
|
|
We welcome all contributions, be it bug reports, feature suggestions or pull requests. We follow the style mandated by zig fmt so make sure you've run `zig fmt` on your code before submitting it.
|
|
|
|
We also like to order a file's members (public after non-public):
|
|
1. imports
|
|
2. type definitions
|
|
3. constants
|
|
4. variables
|
|
5. inline functions
|
|
6. functions
|
|
7. entry point/init function
|