radare2/doc/brainfuck.md

# Brainfuck support for r2

Plugins for brainfuck:

* `debug.bf` - debugger using bfvm
* `arch.bf` - code analysis for brainfuck
* `bp.bf` - breakpoints support (experimental)

To debug a brainfuck program:

```sh
r2 -D bf bfdbg:///tmp/bf

> dc    # continue
> x@scr # show screen buffer contents
```

The debugger creates virtual sections for code, data, screen and input.

## TODO

* add support for comments, ignore invalid instructions as nops
* enhance io and debugger plugins to generate sections and set arch opts

## Hello World

```brainfuck
>+++++++++[<++++++++>-]<.>+++++++[<++++>-]<+.+++++++..+++.[-]
>++++++++[<++++>-] <.>+++++++++++[<++++++++>-]<-.--------.+++
.------.--------.[-]>++++++++[<++++>- ]<+.[-]++++++++++.
```

```sh
$ cat << EOF
>+++++++++[<++++++++>-]<.>+++++++[<++++>-]<+.+++++++..+++.[-]>++++++++[<++++>-] <.>+++++++++++[<++++++++>-]<-.--------.+++.------.--------.[-]>++++++++[<++++>- ]<+.[-]++++++++++.
EOF
```