Arcxm / bfasm

A brainfuck to assembly converter written in Rust.

bfasm

bfasm is a brainfuck to assembly converter written in Rust.

Please note that the project currently only generates Windows x86-64 assembly in Intel syntax!

Quick Start

You can try one of the Brainfuck programs supplied in tests or one of your own.

$ cargo run filename.bf

Which will generate filename.asm.

Assembling

Using nasm and the Visual Studio Developer Command Prompt:

$ nasm -fwin64 filename.asm
$ link filename.obj msvcrt.lib /LARGEADDRESSAWARE:NO
$ ./filename

TODOs

• optimize generated assembly (e.g. multiple incs to one add etc.)
• flag to generate 32 bit Assembly?
• flag to generate Assembly in AT&T Syntax
• flag to generate Assembly for Linux
• fix /LARGEADDRESSAWARE:NO when linking

FAQ

Q: Why does bfasm generate X and not Y?

I've only been getting into assembly for the past days, therefore the generated assembly won't be the most optimized or "sane". But that is just an obstacle that can be tackled in the future.

Q: How does bfasm read and write characters?

The generated assembly calls to _getch and putchar from libc as there are no proper syscalls for Windows like on Linux.

Q: Are there any other Brainfuck-related projects you have been working on?

I've made a Brainfuck Debugger that could be used to debug Brainfuck programs before converting them to assembly.