c4
bcompiler
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c4 | bcompiler | |
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11 | 4 | |
9,076 | 81 | |
- | - | |
0.0 | 0.0 | |
3 months ago | about 3 years ago | |
C | Shell | |
GNU General Public License v3.0 only | - |
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c4
- A tiny hand crafted CPU emulator, C compiler, and Operating System
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Running the "Reflections on Trusting Trust" Compiler
The C4 compiler [https://github.com/rswier/c4] is a self-hosting compiler for a subset of the C programming language that produces executable x86 code. You can understand and audit this code in a couple of hours (its 528 lines).
It could be an interesting exercise to bootstrap up from something like this to a working linux environment based solely on source code compilation : no binary inputs. Of course a full linux environment has way too much source code for one person or team to audit, but at least it rules out RoTT style binary compiler contamination.
- AoikC4x86Study: Line-by-line comments to c4.c and c4x86.c files
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Flattening ASTs (and Other Compiler Data Structures)
I was surprised to see nodes still have two pointers ("references") given that you now know that that the first pointer will always point exactly to the next node. I've see https://github.com/rswier/c4 use that. Granted it doesn't make for the most readable code, but it's even smaller and faster.
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vermin_vm: Virtual Machine(~400 lines) + Assembler(~800 lines) written in C
VMs with simple instruction sets is a fun topic. Some years ago I got inspired by the amazing rswier/c4 compiler by Robert Swierczek and explored the smallest instruction set I could get away with to create VMs that could run non-trivial workloads.
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Hand-optimizing the TCC code generator
C4 comes to mind (C in 4 functions), https://github.com/rswier/c4.
have you considered adding a backend for LLVM? perhaps a bit heavyweight, but it could be a good way to get C/C++, fortran, rust, etc. if that's something you'd like!
- What is the simplest self-compiling subset of C?
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Compilers Are Hard
...or in other words, "they're hard only because you make them hard".
That said, I think C4 makes a better example of how simple it can be:
https://github.com/rswier/c4/blob/master/c4.c
(Previously on HN at https://news.ycombinator.com/item?id=8558822 and https://news.ycombinator.com/item?id=22353532)
bcompiler
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Bootstrapping a compiler from nothing.
Git mirror of this: https://github.com/certik/bcompiler
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What is the simplest self-compiling subset of C?
See https://github.com/certik/bcompiler/issues/1#issuecomment-793896926
What are some alternatives?
stage0 - A set of minimal dependency bootstrap binaries
qbe-rs - QBE IR in natural Rust data structures
libcperciva - BSD-licensed C99/POSIX library code shared between tarsnap, scrypt, kivaloo, spiped, and bsdiff.
fpga_craft - A voxel game/Minecraft clone for the iCE40 UP5K FPGA
packedjson - packedjson is an alternative Nim implementation for JSON. The JSON is essentially kept as a single string in order to save memory over a more traditional tree representation.
cproc - C11 compiler (mirror)
neat - The Neat Language compiler. Early beta?
packedjson2 - Efficient JSON implementation. The tree is essentially a seq of nodes. Based on planetis-m/jsonecs#8
Befunge - lang befunge 93 fast
bug - Scala 2 bug reports only. Please, no questions — proper bug reports only.
bootstrap - Bootstrapping VM for bare metal to trusted C compilation
bamboomigrate - bamboomigrate is a typelevel transformation and migration library