rust
gccrs
rust | gccrs | |
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5 | 102 | |
5 | 2,270 | |
- | 0.8% | |
0.0 | 10.0 | |
5 days ago | 1 day ago | |
Rust | ||
GNU General Public License v3.0 or later | GNU General Public License v3.0 only |
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rust
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[Help] How do I port Rust to a new OS where there is no LLVM support?
For what it's worth, this is the script I'm using to build for our platform: build.ps1 / build.sh
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Can i create a rust compiler for my custom made OS?
Note that before I got the target triple upstream, I had to provide my own target json file. That's here: https://github.com/betrusted-io/rust/blob/1.53.0-xous/riscv32imac-unknown-xous-elf.json and you can adapt it as necessary. Simply creating the file in the correct path is enough. This is the code that does that: https://github.com/betrusted-io/rust/blob/e39344c5473d49a0cb4d45de119ad23713a00ed4/rebuild.ps1#L65
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How to fully replace/reimplement std?
Everything you need to know to build for our platform is at https://github.com/betrusted-io/rust/ and maybe the scripts or patches there will be interesting to you.
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Rust: A Critical Retrospective
Rust does use a Rust port of dlmalloc on platforms that don't provide malloc() and free(). We did port this to Xous, but ran into a feature bug that caused locking to be disabled. That was the source of weird and subtle bugs, which is how he discovered that fact about allocators.
This is correct.
When you tell someone to install Rust, they go to rustup.rs and install the latest version. Therefore, we need to have a libstd port for the latest version. Which effectively means we need to release libstd as soon as possible after the compiler is released. Our `sys` directory is at https://github.com/betrusted-io/rust/tree/1.61.0-xous/librar... and isn't too complicated. It's about 50 patches that need to be carried forward every six weeks.
Fortunately libstd doesn't change too much, at leaset not the parts we need. And I can usually pre-port the patches by applying them to `beta`, which means the patches against the release version usually apply cleanly.
It's still better than requiring nightly, which has absolutely no stability guarantees. By targeting stable, we don't run into issues of bitrot where we accidentally rely on features that have been removed. Rather than adjusting every service in the operating system, we just need to port one library: libstd
I've considered trying to upstream these, but I'm not sure how the rust team would feel about it.
gccrs
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FreeBSD evaluating Rust's adoption into base system
There is a Rust front-end for GCC that is under active development [1]. If the chip vendors are not willing to develop and upstream a LLVM back-end then they can feel free to start contributing to it.
[1] https://rust-gcc.github.io/
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Why do lifetimes need to be leaky?
That's why gccrs doesn't even consider lifetime checking a part of the language (they plan to use Polonius, too).
- Rust-GCC: GCC Front-End for Rust
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How hard would it be to port the Rust toolchain to a new non-POSIX OS written in Rust and get it to host its own development? What would that process entail?
There's ongoing work on a Rust front-end for GCC (https://github.com/Rust-GCC/gccrs). Bit barebones right now -- ie, even core doesn't compile -- but there's funding, demand, and regular progress, so it'll only get better from there. Once gccrs can compile core, it should be ready to compile most of Rust, and thus if you've taught the calling conventions for C to GCC, you're golden.
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How hard is it to write a front end for a more complex language like Rust or Kotlin?
I recommend checking out the GCC Rust frontend project.
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Rust contributions for Linux 6.4 are finally merged upstream!
That is what theyre refering to, yes. The GitHub is named https://github.com/Rust-GCC/gccrs
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GCC 13 and the State of Gccrs
- But this misses so much extra context information
3. Macro invocations there are really subtle rules on how you treat macro invocations such as this which is not documented at all https://github.com/Rust-GCC/gccrs/blob/master/gcc/rust/expan...
Some day I personally want to write a blog post about how complicated and under spec'd Rust is, then write one about the stuff i do like it such as iterators being part of libcore so i don't need reactive extensions.
- Break rust Easter Egg Merged Into gccrs
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Any alternate Rust compilers?
(Speaking of which, Rust-GCC (or gcc-rs or gccrs or whichever other of their names they decide is the primary one) isn't even going to be a complete C++ implementation. Their plan is to implement enough to compile Polonius (the NLL 2.0 borrow checker being developed in Rust for rustc) and then share that since borrow-checking isn't necessary for codegen... only to identify and reject invalid programs... making the C++ portion of it not that different in scope from mrustc.)
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Which programming languages, if all legacy code written in them was ported to a more modern language, would become extinct?
That bridge will be crossed with gccrs (compiling Rust with gcc directly, coming next month with GCC 13) and rust_codegen_gcc (rustc frontend, GCC backend, works now but just doesn’t yet have an “easy” setup)
What are some alternatives?
jnode - Code for the JNode operating system
gcc-rust - a (WIP) Rust frontend for gcc / a gcc backend for rustc
FreeRTOS-rust - Rust crate for FreeRTOS
rustc_codegen_gcc - libgccjit AOT codegen for rustc
snapbox - Snapshot testing for CLIs
rustc_codegen_gcc - libgccjit AOT codegen for rustc
xargo - The sysroot manager that lets you build and customize `std`
mold - Mold: A Modern Linker 🦠
wg-cargo-std-aware - Repo for working on "std aware cargo"
rust - Empowering everyone to build reliable and efficient software.
miri - An interpreter for Rust's mid-level intermediate representation
Rust-for-Linux - Adding support for the Rust language to the Linux kernel.