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brainfuck.md

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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:

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

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