Google Git
Sign in
chromium / external / github.com / WebAssembly / wasm-e2e / refs/heads/raytrace_shadows
commitba224d0316c00d54c01cef4cb6b80cd9f9e79871[log] [tgz]
authorNick Bray <ncbray@chromium.org>Mon Dec 14 22:06:03 2015
committerNick Bray <ncbray@chromium.org>Tue Dec 15 00:13:50 2015
tree8f96d6b703f9269e74a55b133207730223b900e2
parentd3b73309ca59b464358729aafe005ac14fec54df [diff]
Raytracer: shadows and multi-sample anti-aliasing.
4 files changed
tree: 8f96d6b703f9269e74a55b133207730223b900e2
  1. bin/
  2. scripts/
  3. test/
  4. third_party/
  5. .gitignore
  6. .gitmodules
  7. AUTHORS
  8. Contributing.md
  9. CONTRIBUTORS
  10. LICENSE
  11. README.md
README.md

Build Status

wasm-e2e

This repository contains tools and scripts to compile C/C++ to a WebAssembly binary format, and run it.

Currently this includes:

  • LLVM: for compiling C source to the “.s” format, which is the current output of WebAssembly by the LLVM backend.
  • wasmate: for converting “.s” to the S-expression format as defined in the spec repo.
  • sexpr-wasm: for converting the S-expression format to the v8-native binary format.
  • v8-native: for running the binary.

At this time, the contents of this repository are under development and known to be incomplet and inkorrect.

Participation is welcome, though many of the changes will need to be landed in other repositories.

Cloning/Updating

Clone the repo, update the submodules, and update LLVM:

$ git clone https://github.com/WebAssembly/wasm-e2e
$ cd wasm-e2e
$ git submodule update --init
$ ./scripts/update-llvm.sh

LLVM is not included as a submodule because it is quite large and requires a repo to be installed inside another repo. The update-llvm.sh script clones with --depth 5000 to reduce the download size.

Updating the repo is almost the same:

$ git pull origin master
$ git submodule update
$ ./scripts/update-llvm.sh

Building

To build all the tools:

$ ./scripts/build-all.sh

You can also build each component separately:

  • LLVM/Clang: ./scripts/build-llvm.sh
  • v8-native/d8: ./scripts/build-d8.sh
  • sexpr-wasm: ./scripts/build-sexpr-wasm.sh

Running

Use the ./script/run.py Python script to compile and run a C source file:

$ ./scripts/run.py test/hello.c test/wasm.js
Hello, world!

$ scripts/run.py test/fizzbuzz.c test/wasm.js 
1
2
fizz
4
buzz
fizz
7
8
fizz
buzz
11
fizz
13
14
fizzbuzz
16
17
fizz
19

The script compiles the C source to v8-native binary format. The wasm.js file is used as a wrapper for loading WebAssembly binary modules in d8.