zz
usbarmory
zz | usbarmory | |
---|---|---|
10 | 22 | |
1,604 | 1,338 | |
- | 0.4% | |
1.9 | 5.8 | |
almost 2 years ago | 14 days ago | |
Rust | Ruby | |
MIT License | - |
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zz
- A "logical" compiler
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Is it possible to have a superset of the C programming languages standard that is as safe as Rust?
There is this: https://github.com/zetzit/zz
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ISO C became unusable for operating systems development
You're right that you can't define a safe subset of C without making it practical. MISRA C defines a C subset intended to help avoid C's footguns, but it still isn't actually a safe language. There are alternative approaches though:
1. Compile a safe language to C (whether a new language or an existing one)
2. Formal analysis of C, or of some practical subset of C, to prove the absence of undefined behaviour
Work has been done on both approaches.
ZZ compiles to C. [0] Dafny can compile to C++, but it seems that's not its primary target. [1][2]
There are several projects on formal analysis of C. [3][4][5][6]
[0] https://github.com/zetzit/zz
[1] https://github.com/dafny-lang/dafny
[2] https://dafny-lang.github.io/dafny/
[3] https://frama-c.com/
[4] https://www.microsoft.com/en-us/research/project/vcc-a-verif...
[5] https://www.eschertech.com/products/ecv.php
[6] https://trust-in-soft.com/
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Foundations of Dawn: The Untyped Concatenative Calculus
Formal methods have been used successfully for decades; it's not just a pipe dream. Perfect software should ideally be something like ultra-low-defect software, though (that's the term the AdaCore folks use).
There are also other projects that aim to make formal software development much easier [0][1] and of course there's SPARK Ada.
[0] https://github.com/zetzit/zz
[1] https://github.com/dafny-lang/dafny
- ZetZ: A zymbolic verifier and tranzpiler to bare metal C Resources
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Programming in Z3 by learning to think like a compiler
This post reminds me that I've been wanting to try out ZetZ[0]. It incorporates Z3 into a high-level programming language, and seems to do a lot of what the post talks about automatically.
[0] https://github.com/zetzit/zz
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Grids in Rust, part 2: const generics
I still want to try the ZZ language (https://github.com/zetzit/zz) someday. It compiles to C, and uses a SMT solver to prove that you don't index out-of-bounds at compile time. But I don't like how it lacks generics, uses C idioms, and compiles to C.
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Another technique to manage memory
The zz language uses a SMT solver to check for program soundness... I haven't tried it, but that's got to be more flexible and resource-hungry.
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We are building a new systems programming language
Especially the fact that it outputs C code. So interop is seamless.
https://github.com/zetzit/zz
For any systems language, interop with C is the litmus test.
With that in mind, this new language should not require 15,000 lines of standard library. A type-safe wrapper for libc should be enough...
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Does such a language already exist ("Rust--")?
You might find ZetZ interesting!
usbarmory
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Go: What We Got Right, What We Got Wrong
Niklaus Wirth, rest his soul, would disagree.
Like would the the selling USB Armory, with Go written firmware.
https://www.withsecure.com/en/solutions/innovative-security-...
Back in my day, writing compilers and OS services were also systems programming.
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What's Zig got that C, Rust and Go don't have? [video]
Not only you can fit Go into a kernel, there is at least two products that do so.
TamaGo, used to write the firmware used in USB armory.
https://www.withsecure.com/en/solutions/innovative-security-...
TinyGo, which even has official Arduino and ARM support, and is sponsored by Google
https://tinygo.org/
Ah but that isn't proper Go! Well neither is the C code that is allowed to be used in typical kernel code, almost nothing from ISO C standard library is available, and usually plenty of compiler specific language extensions are used instead.
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Bare Metal Rust in Android
> Since 80s everybody designs systems on top of C.
More like since the 1990's, and mostly thanks to the GNU Manifesto and FOSS uptake that took the steam out of C++ adoption being pushed by Apple, IBM and Microsoft.
There is firmware in production written in Go,
https://www.withsecure.com/en/solutions/innovative-security-...
- USB armory β small secure computer from WithSecure (previously F-secure)
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How is Go used in Linux based environments in various companies?
Not exactly but close. No gocoin, but custom (minimal) client based on btcsuite libs. And it is run on USB Armory SoC.
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avbroot: Re-lock bootloader with Magisk installed!
Relocking with your own key is only for experts, it's similar to the USB Armory device for embedded electronics. If you get it wrong you can brick the device, the purpose of doing it is to protect against certain types of boot attacks (like if somebody can get temporary physical access to your phone or even just plant a malicious USB cable which could potentially push malware. If you don't know what you're doing, stay on stock OS.
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Google: C++20, How Hard Could It Be
Plenty of software that is written in C and C++, can be easily done in Go as well, in fact in any AOT compiled managed language.
C++ was born to write distributed systems, nowadays it hardly matters on cloud native infrastructure beyond the OS and hypervisors layer.
This is how Go can be a competitor to C and C++, just like Inferno was basically Plan 9 with Limbo for userspace and very little C beyond the kernel.
And then there are those crazy folks that believe they should ship bare metal AOT compiled languages regardless of others think.
https://www.withsecure.com/en/solutions/innovative-security-...
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Rust 2024 the Year of Everywhere?
Of course it can, there are companies shipping products written in bare metal Go.
https://www.withsecure.com/en/solutions/innovative-security-...
https://github.com/usbarmory/tamago
- Generics can make your Go code slower
- Rust Compiler Ambitions for 2022
What are some alternatives?
TinyGo - Go compiler for small places. Microcontrollers, WebAssembly (WASM/WASI), and command-line tools. Based on LLVM.
checkedc - Checked C is an extension to C that lets programmers write C code that is guaranteed by the compiler to be type-safe. The goal is to let people easily make their existing C code type-safe and eliminate entire classes of errors. Checked C does not address use-after-free errors. This repo has a wiki for Checked C, sample code, the specification, and test code.
SkyFM
angr - A powerful and user-friendly binary analysis platform!
go-is-not-good - A curated list of articles complaining that go (golang) isn't good enough
CrossHair - An analysis tool for Python that blurs the line between testing and type systems.
zerosharp - Demo of the potential of C# for systems programming with the .NET native ahead-of-time compilation technology.
micro-mitten - You might not need your garbage collector
tamago - TamaGo - ARM/RISC-V bare metal Go
alive2 - Automatic verification of LLVM optimizations
biscuit - Biscuit research OS