A basic C compiler written in Rust that compiles C code into x86 assembly, following GAS/AT&T syntax, with no external Rust dependencies. Inspired by this post by Nora Sandler.
Note this is mostly done for learning, and isn't intended to be used seriously.
Currently, rustcc supports the following features:
- Unary operators (logical negation, bitwise complements, negation)
- Binary operators (basic arithmetic, bitwise operations, comparisons)
- Local variables (assignment, declaration, variable calling, postfix and prefix incrementing)
- If-else branching
- Ternary operator
- While loops, do-while loops, for loops, break, continue
- Function calling and creation
As of now, rustcc only supports variables of type int.
To install, ensure beforehand that you have Rust and Cargo installed. After that, clone the repository. Then, run cargo build --release.
To use the compiler, run the rustcc script as follows:
./rustcc /path/to/source.c
Upon running, the compiled executable file will be in the same directory and name as the input source file. The created assembly source.s file will be deleted upon running the script.
Alternatively, you can directly run ./target/release/rustcc /path/to/source.c (or target/release/rustcc.exe /path/to/source.c on Windows) to retain the assembly file.
rustcc is a project done purely out of personal interest. The compiled x86 code is most likely not optimized and the possibility of something not working or being supported is quite probable. I am not responsible for anything going wrong with the use of this.