stage0
sc
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stage0 | sc | |
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22 | 17 | |
888 | 2,165 | |
- | - | |
3.9 | 6.3 | |
3 months ago | 22 days ago | |
Assembly | C | |
GNU General Public License v3.0 only | BSD 3-clause "New" or "Revised" License |
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stage0
- Running the "Reflections on Trusting Trust" Compiler
- Stage0: A minimal bootstrapping path to a C compiler capable of compiling GCC
- Goodbye to the C++ Implementation of Zig
- Stage0 – A set of minimal dependency bootstrap binaries
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Nixpacks takes a source directory and produces an OCI compliant image
Somewhat tangential, but I'm curious how big the bootstrap seed for Nix is. That is, if you wanted to build the entire world, what's a minimum set of binaries you'd need?
Guix has put quite a bit of work into this, AFAIU, and it's getting close to being bootstrappable all the way from stage0 [0]. Curious if some group is also working on similar things for Nix.
[0]:https://github.com/oriansj/stage0
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"Do you believe that every upstream project... is examined by an expert who can accurately identify whether said project contains malware...?"
https://www.bootstrappable.org/ has some good info. Reading the source of https://github.com/oriansj/stage0 is also very enlightening. It's set its goal to be understandable by 70% of programmers.
- Stage0 - A set of minimal dependency bootstrap binaries
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Common libraries and data structures for C
Even if they aren't, people absolutely should be able to bootstrap new platforms from scratch. It's important to have confidence in our tools, in our ability to rebuild from scratch, and to be safe against the "trusting trust" attack among other things.
Lately I've been catching up on the state of the art in bootstrapping. Check out the live-bootstrap project. stage0 starts with a seed "compiler" of a couple hundred bytes that basically turns hex codes into bytes while stripping comments. A series of such text files per architecture work their way up to a full macro assembler, which is then used to write a mostly architecture-independent minimal C compiler, which then builds a larger compiler written in this subset of C. This then bootstraps a Scheme in which a full C compiler (mescc) is written, which then builds TinyCC, which then builds GCC 4, which works its way up to modern GCC for C++... It's a fascinating read:
https://github.com/oriansj/stage0
https://github.com/fosslinux/live-bootstrap/blob/master/part...
Even if no one is "using" this it should still be a primary motivator for keeping C simple.
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How To Build an Evil Compiler
One countermeasure not mentioned here is bootstrapping a compiler with a program small enough to be manually verified. The stage0 project is under 1KB (small enough that the binary can be, and has been, manually checked against the hand written assembly), and GNU Guix (a system for reproducible, isolated builds) is currently working on moving it's bootstrap speed to stage0. That means that, fairly soon, there will be a large set of software that doesn't have a connection to an original C compiler.
- A minimal C compiler in x86 assembly
sc
- A simple hash table in C
- Advice for bigger c projects?
- sc - Common libraries and data structures for C
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Hacker News top posts: May 17, 2022
Common libraries and data structures for C\ (107 comments)
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Common libraries and data structures for C
Can someone tell me what is this line from sc_signal.c:247 in sc/signal/
If the way it is used requires the user to break the abstraction/encapsulation and manually buffer some fields in order not to break the data structure and leak memory, I would call that a bug.
There is one use of sc_array_clear() in the test code [1] which really makes it look as if it is being used in a way that I think (again, I haven't single-stepped this code, only read it) leaks memory.
I agree on the pain of everything being macros, it's more pain than it's worth I think and will likely lead to code duplication (and more pain in debugging, probably).
I would even go so far as to think that this kind of single-file design, where each file is independent of the others, makes it harder and more annoying to implement more complicated data structures.
[1]: https://github.com/tezc/sc/blob/master/array/array_test.c#L3...
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Uthash – C macros for hash tables and more
https://github.com/tezc/sc/tree/master/map
For those who are interested in faster hashmaps, I tried bunch of hashmaps and this one performs better than others. This is for C. Maybe C++ has better hashmaps.
What are some alternatives?
rizin - UNIX-like reverse engineering framework and command-line toolset.
frr - The FRRouting Protocol Suite
arocc - A C compiler written in Zig.
wazero - wazero: the zero dependency WebAssembly runtime for Go developers
chibicc - A small C compiler
libcperciva - BSD-licensed C99/POSIX library code shared between tarsnap, scrypt, kivaloo, spiped, and bsdiff.
pottery - Pottery - A container and algorithm template library in C
bug - Scala 2 bug reports only. Please, no questions — proper bug reports only.
gcc
c4 - C in four functions
libderp - C collections. Easy to build, boring algorithms. Dumb is good.