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Oeiuwq Faith Blog OpenSource Porfolio

nelhage/gojit

JIT code-generation in Go!
Source code at GitHub https://github.com/nelhage/gojit
nelhage/gojit.json
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  "createdAt": "2014-04-26T17:44:18Z",
  "defaultBranch": "master",
  "description": "JIT code-generation in Go!",
  "fullName": "nelhage/gojit",
  "homepage": "",
  "language": "Go",
  "name": "gojit",
  "pushedAt": "2015-11-06T16:45:57Z",
  "stargazersCount": 348,
  "topics": [],
  "updatedAt": "2025-08-11T10:55:45Z",
  "url": "https://github.com/nelhage/gojit"
}

gojit — pure-golang runtime code-generation

Section titled “gojit — pure-golang runtime code-generation”

This is the result of my spending the hack day at Gophercon 2014 playing with doing JIT from golang code. This repository contains several packages:

  • gojit

    Contains the basic JIT support — allocate executable chunks of memory, and convert them into callable golang functions.

  • amd64

    Contains a simplistic amd64 assembler designed for use with gojit

  • bf

    Contains a just-in-time compiler for Brainfuck that demos the above packages

  • gobf

    Contains a binary that provides a command-line interface to bf

Using

Section titled “Using”

gobf can be fetched using

go get github.com/nelhage/gojit/gobf

And then run as gobf file.bf. For some built-in examples:

$ gobf $GOPATH/src/github.com/nelhage/gojit/bf/test/hello.bf
Hello World!
$ gobf $GOPATH/src/github.com/nelhage/gojit/bf/test/hello.bf | gobf $GOPATH/src/github.com/nelhage/gojit/bf/test/rot13.bf
Uryyb Jbeyq!

Portability

Section titled “Portability”

This code has been tested on darwin/amd64 and linux/amd64. It is extremely unlikely to work anywhere else.