v0.5.0 of Real Time For the Masses (RTFM), the embedded concurrency framework, is coming out soon-ish – some time after Rust 1.36 is released – and will include experimental support for homogeneous and heterogeneous multi-core Cortex-M devices. This blog post covers the upcoming multi-core API and includes a refresher on the single-core API. Heterogeneous support in μAMP But first, one update relevant to multi-core RTFM from the μAMP (microamp) front since the last post: cargo-microamp has gained support for heterogeneous multi-core devices ..read more

An asymmetric multiprocessing (AMP) system is a multiprocessor computer system where not all of the multiple interconnected central processing units (CPUs) are treated equally. – Wikipedia What is μAMP? microamp (styled as μAMP) is a framework (library plus cargo subcommand) for building bare-metal applications that target AMP systems. This blog post is a deep dive into this framework which serves as the core foundation of the multi-core version of Real Time For the Masses (RTFM), which I’ll cover in the next blog post ..read more

In a previous post I described the current implementation of cargo-call-stack, a static stack usage analysis tool. In the second part of that post I described the problems the tool runs into when dealing with indirect function calls (both function pointer calls and dynamic dispatch) and proposed improving the output of the tool by having rustc inject type information in the LLVM IR it produces. While discussing that idea with rustc developers they noted that the compiler could emit information that’s more relevant to call graph analysis than just the signatures of functions and trait methods ..read more