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In this post, we explore cooperative multitasking and the async/await feature of Rust. We take a detailed look at how async/await works in Rust, including the design of the Future trait, the state machine transformation, and pinning. We the...
Philipp Oppermann's blog Updates in February 2020 Mar 02, 2020 This post gives an overview of the recent updates to the Writing an OS in Rust blog and the corresponding libraries and tools. blog_os The repository of the Writing an OS in Rus...
Updates in January 2020 Feb 01, 2020 This post gives an overview of the recent updates to the Writing an OS in Rust blog and the corresponding libraries and tools. blog_os The repository of the Writing an OS in Rust blog received the follow...
This post explains how to implement heap allocators from scratch. It presents and discusses different allocator designs, including bump allocation, linked list allocation, and fixed-size block allocation. For each of the three designs, we w...
Philipp Oppermann's blog Updates in December 2019 Jan 07, 2020 Happy New Year! This post gives an overview of the recent updates to the Writing an OS in Rust blog and the corresponding libraries and tools. blog_os The repository of the Writ...
Philipp Oppermann's blog Updates in September 2019 Oct 06, 2019 This post gives an overview of the recent updates to the Writing an OS in Rust blog and the used libraries and tools. I finished my master thesis and got my degree this month,...
Philipp Oppermann's blog Updates in August 2019 Sep 09, 2019 This post gives an overview of the recent updates to the Writing an OS in Rust blog and the used libraries and tools. I was very busy with finishing my master’s thesis, so I didn’...
Philipp Oppermann's blog Updates in July 2019 Aug 02, 2019 This post gives an overview of the recent updates to the Writing an OS in Rust blog and the used libraries and tools. Since I’m still very busy with my master thesis, I haven’t had...
Philipp Oppermann's blog Updates in June 2019 Jul 06, 2019 This post gives an overview of the recent updates to the Writing an OS in Rust blog and the used libraries and tools. My focus this month was to finish the Heap Allocation post, on...
This post adds support for heap allocation to our kernel. First, it gives an introduction to dynamic memory and shows how the borrow checker prevents common allocation errors. It then implements the basic allocation interface of Rust, creat...
Philipp Oppermann's blog Updates in May 2019 Jun 03, 2019 This post gives an overview of the recent updates to the Writing an OS in Rust blog and to the used tools. I was quite busy with my master thesis this month, so I didn’t have the tim...
Philipp Oppermann's blog Updates in April 2019 May 01, 2019 Lot’s of things changed in the Writing an OS in Rust series in the past month, both on the blog itself and in the tools behind the scenes. This post gives an overview of the most i...
This post explores unit and integration testing in no_std executables. We will use Rust’s support for custom test frameworks to execute test functions inside our kernel. To report the results out of QEMU, we will use different features of Q...
This post shows how to implement paging support in our kernel. It first explores different techniques to make the physical page table frames accessible to the kernel and discusses their respective advantages and drawbacks. It then implement...
Deprecated: This post is deprecated in favor of the Paging Implementation post and will no longer receive updates. See issue #545 for reasons for this deprecation. This post explains techniques to make the physical page table frames accessi...
This post introduces paging, a very common memory management scheme that we will also use for our operating system. It explains why memory isolation is needed, how segmentation works, what virtual memory is, and how paging solves memory fra...
In this post, we set up the programmable interrupt controller to correctly forward hardware interrupts to the CPU. To handle these interrupts, we add new entries to our interrupt descriptor table, just like we did for our exception handlers...
Deprecated: This post is deprecated in favor of the Testing post and will no longer receive updates. To complete the testing picture we implement a basic integration test framework, which allows us to run tests on the target system. The ide...
This blog series creates a small operating system in the Rust programming language. Each post is a small tutorial and includes all needed code, so you can follow along if you like. The source code is also available in the corresponding Gith...
Deprecated: This post is deprecated in favor of the Testing post and will no longer receive updates. This post explores unit testing in no_std executables using Rust’s built-in test framework. We will adjust our code so that cargo test work...
"You won’t appreciate Rust unless you spend few weeks building something in it. The initial steep learning curve could be frustrating or challenging ..."