rellic
mrustc
rellic | mrustc | |
---|---|---|
5 | 75 | |
510 | 2,087 | |
0.8% | - | |
5.5 | 8.8 | |
4 months ago | 4 days ago | |
C++ | C++ | |
Apache License 2.0 | MIT License |
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rellic
- Understanding Objective-C by transpiling it to C++
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An Algorithm for Structuring Flowgraphs (1977) [pdf]
Rellic[0] is a decompiler that uses a similar, more modern approach to turn LLVM IR into goto-free C code
[0]: https://github.com/lifting-bits/rellic
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Decompiler Explorer
Rellic [1] implements an algorithm that generates goto-free control flows (citation in README), which would be a significant improvement against what Ghidra/IDA generates currently.
Unfortunately it looks like the maintenance state of the pieces around Rellic isn't very good, and it's quite rocket science to get it building. It doesn't have as much UI/GUI as Ghidra either so it's a bit far from accessible right now.
[1]: https://github.com/lifting-bits/rellic
- Snowman native code to C/C++ decompiler for x86/x86_64/ARM
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Q: Irreducible Control Flow Graph in current compilers?
Worthlooking into "No more gotos" paper, you can find a copy here: https://github.com/lifting-bits/rellic/blob/master/docs/NoMoreGotos.pdf
mrustc
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Why do lifetimes need to be leaky?
No, you don't. Existential proof: mrustc ignores lifetimes. Just flat out simply ignores. It changes some corner-cases related to HRBT, yet rustc compiled by mrustc works (that's BTW mrustc exist: to bootsrap the rustc compiler).
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I think C++ is still a desirable coding platform compared to Rust
Incidentally C++ is the only way to bootstrap rust without rust today.
https://github.com/thepowersgang/mrustc
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Rust – Faster compilation with the parallel front-end in nightly
Well, there is mrustc[0], a Rust compiler that doesn't include a borrow-checker, so it's possible to compile (at least some versions of) Rust without a borrow checker, though it might not result in the most optimized code.
AFAIK there are some optimization like the infamous `noalias` optimization (which took several tries to get turned on[1]) that uses information established during borrow checking.
I'm also not sure what the relation with NLL (non-lexical lifetimes) is, where I would assume you would need at least a primitive borrow-checker to establish some information that the backend might be interested in. Then again, mrustc compiles Rust versions that have NLL features without a borrow-checker, so it's again probably more on the optimization side than being essential.
[0]: https://github.com/thepowersgang/mrustc
[1]: https://stackoverflow.com/a/57259339
- Running the "Reflections on Trusting Trust" Compiler
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Forty years of GNU and the free software movement
> Maybe another memory safe language, but Rust has severe bootstrapping issues which is a hard sell for distros that care about source to binary transparency.
It is possible to bootstrap rustc from just GCC relatively easily, although it's a little bit time consuming.
You can use mrustc to bootstrap Rust 1.54: https://github.com/thepowersgang/mrustc
And from then you can go through each version all the way to the current 1.72. (Each new Rust version officially needs the previous one to compile.)
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Building rustc on sparcv9 Solaris
Have you tried this route : https://github.com/thepowersgang/mrustc ?
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GCC 13 and the state of gccrs
Mrustc supports Rust 1.54.0 today
- Any alternate Rust compilers?
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Stop Comparing Rust to Old C++
There are three. The official one, mrustc (no borrow checker, but can essentially compile the official rustc) and GCC (can't really compile anything substantial yet). Only rustc is production-ready though.
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Can I make it so that only the newest version of Rust gets installed?
That probably depends on what you mean by problematic. Having an ever increasing chain of dependencies isn’t the most desirable situation so there has been some work to trim the bootstrap chain. In 2018, when the blogpost I linked above was written, mrustc was used to bootstrap rust 1.19.0; now mrustc can bootstrap rust 1.54.0 so the chain to recent versions is much shorter than if all those intervening versions back through 1.19.0 needed to be built. https://github.com/thepowersgang/mrustc
What are some alternatives?
rz-ghidra - Deep ghidra decompiler and sleigh disassembler integration for rizin
gccrs - GCC Front-End for Rust
faust - Functional programming language for signal processing and sound synthesis
gccrs - GCC Front-End for Rust
lumen - A private Lumina server for IDA Pro
llvm-cbe - resurrected LLVM "C Backend", with improvements
ghidra - Ghidra is a software reverse engineering (SRE) framework
rust-ttapi
mull - Practical mutation testing and fault injection for C and C++
miri - An interpreter for Rust's mid-level intermediate representation
cling - The cling C++ interpreter
gcc-rust - a (WIP) Rust frontend for gcc / a gcc backend for rustc