rust-osdev / rust-osdev/x86_64
const fn gdt creation
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- Dominant language
- Rust
- Stars
- 940
- Forks
- 157
- Avg merge
- 1d 10h
- Merged PRs (30d)
- 3
Description
I would like the ability to create a GlobalDescriptorTable with a const fn. I am writing a kernel and need to ensure that no 64-bit code runs before I jump to long mode because the kernel is started in 32-bit mode. I want to define the gdt structure with rust.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the GlobalDescriptorTable construction API and its related Rust types. Check how the GDT structure is currently created and what prevents that path from being const-evaluable. Done means callers can define the GDT structure with const fn while supporting the kernel's 32-bit-to-long-mode transition; no test or file is named in the issue.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- operating-systems
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100