Function integrateWasmJS

src/ld.js:17–334

(Module)

 */

function integrateWasmJS(Module) {
  // wasm.js has several methods for creating the compiled code module here:
  //  * 'native-wasm' : use native WebAssembly support in the browser
  //  * 'interpret-s-expr': load s-expression code from a .wast and interpret
  //  * 'interpret-binary': load binary wasm and interpret
  //  * 'interpret-asm2wasm': load asm.js code, translate to wasm, and interpret
  //  * 'asmjs': no wasm, just load the asm.js code and use that (good for testing)
  // The method can be set at compile time (BINARYEN_METHOD), or runtime by setting Module['wasmJSMethod'].
  // The method can be a comma-separated list, in which case, we will try the
  // options one by one. Some of them can fail gracefully, and then we can try
  // the next.

  // inputs

  var method = Module['wasmJSMethod'] || (Module['wasmJSMethod'] || "native-wasm") || 'native-wasm,interpret-s-expr'; // by default, try native and then .wast
  Module['wasmJSMethod'] = method;

  var wasmTextFile = Module['wasmTextFile'] || undefined;
  var wasmBinaryFile = Module['wasmBinaryFile'] || undefined;
  var asmjsCodeFile = Module['asmjsCodeFile'] || undefined;

  // utilities

  var wasmPageSize = 64*1024;

  var asm2wasmImports = { // special asm2wasm imports
    "f64-rem": function(x, y) {
      return x % y;
    },
    "f64-to-int": function(x) {
      return x | 0;
    },
    "i32s-div": function(x, y) {
      return ((x | 0) / (y | 0)) | 0;
    },
    "i32u-div": function(x, y) {
      return ((x >>> 0) / (y >>> 0)) >>> 0;
    },
    "i32s-rem": function(x, y) {
      return ((x | 0) % (y | 0)) | 0;
    },
    "i32u-rem": function(x, y) {
      return ((x >>> 0) % (y >>> 0)) >>> 0;
    },
    "debugger": function() {
      debugger;
    },
  };

  var info = {
    'global': null,
    'env': null,
    'asm2wasm': asm2wasmImports,
    'parent': Module // Module inside wasm-js.cpp refers to wasm-js.cpp; this allows access to the outside program.
  };

  var exports = null;