elfconv v1.0.0

This is the first major release of elfconv! 🚀
Please see release/README.md for the usage of the release package.

Highlights

Enhanced demos

• Added browser demos for running GNU Bash and Python (e.g., #186, #183, #199)
• Expanded supported commands in busybox (e.g., #186, #189, #234)
• Demo Page: https://yomaytk.github.io/elfconv-demo/

Multi-process support

• Implemented fork/execve emulation in the browser (e.g., #171, #173)
• Enables running process-spawning programs such as Bash

Host file system mounting

• Added support for mounting the host file system into MEMFS (e.g., #237)
• Enables applications that depend on external data

Improved Linux syscall coverage

• Added and enhanced syscalls (e.g., ppoll, ioctl, nanosleep)
• Improves overall Linux compatibility (e.g., #150, #185, #200, #233, #171, #234, #173, #189)

Build system overhaul

• Adopted remill’s new superbuild system (e.g., #210)
• Reduced unnecessary external dependencies (e.g., #208)

New Contributors

Fancy2209

elfconv v0.2.0

This is the second release of elfconv!🚀.

Highlights

1. Two major optimizations to generate higher-performance Wasm:
   • On the LLVM IR translated from Linux/ELF, an optimization to minimize memory accesses wherever possible (#53, #60, #90)
   • Accelerated address translation (#95)

Thanks to these optimizations, the generated Wasm achieves over a 20× performance improvement, and we confirmed it delivers 35–70× the performance compared to container2wasm.

2. Published Demo page
   • We’ve launched a demo page that runs elfconv-converted Wasm directly in the browser. You can currently try out busybox and other examples.
   • demo page: https://yomaytk.github.io/elfconv-demo/

Quick Start

You can translate the ELF binary to the WASM binary using outdir directory.

settings

You should prepare Emscripten, WASI-SDK and WASI runtimes (e.g., WasmEdge, wasmtime)

command

After configuring the above settings, you can try translation by the command as follows.

$ tar -zxvf elfconv-v0.2.0-linux-amd64.tar.gz
$ cd outdir
$ TARGET=aarch64-wasm ./elfconv.sh </path/to/ELF> # generates out/exe.wasm

New Contributors

Akihiro Suda
nanana37

v0.1.0

Initial release!

Quick Start

You can translate the ELF binary to the WASM binary using elfconv.sh. TARGET should be wasm-host for WASI runtimes or wasm-browser for the browser. elfconv generates the WASM using emscripten for the browser and wasi-sdk for WASI runtimes, so please configure the following settings.

settings

emscripten

emcc: compile command of emscripten

wasi-sdk

WASI_SDK_PATH: path to the parent directory of bin of wasi-sdk.

command

After configuring the above settings, you can try translation by the command as follows.

$ cd <unzipped directory>
$ TARGET=wasm-host ./elfconv.sh </path/to/ELF> ./bitcode