swieros
c4
| swieros | c4 | |
|---|---|---|
| 3 | 11 | |
| 1,038 | 9,262 | |
| - | - | |
| 10.0 | 0.0 | |
| over 3 years ago | 5 months ago | |
| C | C | |
| GNU General Public License v3.0 only | GNU General Public License v3.0 only |
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swieros
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A tiny hand crafted CPU emulator, C compiler, and Operating System
There's a very interesting C interpreter/compiler there as well [1]. From the header:
"c is the c compiler. It takes a single source file and creates an executable file or else executes the compiled code immediately. The compiler does not reach full standards compliance, so some programs need minor adjustment.
There is no preprocessor, although the #include keyword is allowed supporting a single level of file inclusion."
[1] https://github.com/rswier/swieros/blob/master/root/bin/c.c
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Best practice to store context for a C compiler
swierosc
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.
- C4: C in Four Functions
- 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!
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Some people of the Linux Community in a nutshell
I use Alpine Linux (no GNU bloat btw), dwm (Sucks less!), and I edit all my C (no bloat language) through busybox ed and compile my programs with (c4)[https://github.com/rswier/c4]
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which programming language was used to make c++ compiler?
Keep in mind you can create a "usable" C compiler by yourself, and is doable in surprisingly low amount of code. Try https://github.com/rswier/c4/blob/master/c4.c
- What is the simplest self-compiling subset of C?
What are some alternatives?
z88dk - The development kit for over a hundred z80 family machines - c compiler, assembler, linker, libraries.
stage0 - A set of minimal dependency bootstrap binaries
wcc - wo4mei3's c compiler written in ocaml
bcompiler - Mirror of http://www.rano.org/bcompiler.tar.gz, with a bootstrap script
sncc - Self hosted C compiler at seccamp2018
qbe-rs - QBE IR in natural Rust data structures
weicc - A small C compiler
libcperciva - BSD-licensed C99/POSIX library code shared between tarsnap, scrypt, kivaloo, spiped, and bsdiff.
riscv32_beluga - c compiler beluga with riscv32 backend
fpga_craft - A voxel game/Minecraft clone for the iCE40 UP5K FPGA
mcc
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.