src/binaryen/scripts/spidermonkify.py

   1 #! /usr/bin/env python
   2
   3 #   Copyright 2016 WebAssembly Community Group participants
   4 #
   5 #   Licensed under the Apache License, Version 2.0 (the "License");
   6 #   you may not use this file except in compliance with the License.
   7 #   You may obtain a copy of the License at
   8 #
   9 #       http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 #   Unless required by applicable law or agreed to in writing, software
  12 #   distributed under the License is distributed on an "AS IS" BASIS,
  13 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 #   See the License for the specific language governing permissions and
  15 #   limitations under the License.
  16
  17 '''
  18 A bunch of hackish fixups for testing of SpiderMonkey support. We should
  19 get rid of these ASAP.
  20
  21 This is meant to be run using BINARYEN_SCRIPTS in emcc, and not standalone.
  22 '''
  23
  24 import os
  25 import subprocess
  26 import sys
  27
  28 import emscripten
  29
  30 binaryen_root = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
  31
  32 js_target = sys.argv[1]
  33 wast_target = sys.argv[2]
  34
  35 wasm_target = wast_target[:-5] + '.wasm'
  36
  37 # convert to binary using spidermonkey
  38 '''
  39 using something like
  40 mozjs -e 'os.file.writeTypedArrayToFile("moz.wasm",
  41 new Uint8Array(wasmTextToBinary(os.file.readFile("a.out.wast"))))'
  42 investigate with
  43 >>> map(chr, map(ord, open('moz.wasm').read()))
  44 or
  45 python -c "print str(map(chr,map(ord,
  46  open('a.out.wasm').read()))).replace(',', '\n')"
  47 '''
  48 subprocess.check_call(
  49     emscripten.shared.SPIDERMONKEY_ENGINE +
  50     ['-e', 'os.file.writeTypedArrayToFile("' + wasm_target +
  51      '", new Uint8Array(wasmTextToBinary(os.file.readFile("' +
  52      wast_target + '"))))'])