Rust Sega Genesis Demo

Usage:

This demo requires Nightly Rust (because m68k support is very unstable in both LLVM and Rust).

This command will enable Nightly.

$ rustup toolchain install nightly

Next, you need to install cargo-binutils.

$ cargo install cargo-binutils

$ rustup component add llvm-tools

Now, use cargo objcopy to first compile the program normally, then turn that output file into a raw binary.

This command will do exactly that:

$ cargo objcopy --release -- -O binary target/m68k-none-eabi/release/mdrs.bin

If you want debug symbols (which drastically increases binary size), omit the --release parameter:

$ cargo objcopy -- -O binary target/m68k-none-eabi/release/mdrs.bin

What's going to be in the demo?

Whatever I want.

If you want to try something different, feel free to clone this repository.

Wait, so m68k is supported on Rust now?

It compiles, but so far both LLVM and Rust's m68k backend are very unfinished and unstable.

The LLVM backend doesn't even support every instruction the m68k has to offer, even in inline assembly!

LLVM sometimes even straight up generates the wrong opcode for an instruction! (here's a particularly infuriating example of this)

So yeah, technically it works, but it doesn't work very well.