Initial import of v8-native WASM.

test/mjsunit/wasm/stackwalk.js

+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --expose-gc --allow-natives-syntax
+
+load("test/mjsunit/wasm/wasm-constants.js");
+
+function makeFFI(func) {
+  var kBodySize = 6;
+  var kNameFunOffset = 24 + kBodySize + 1;
+  var kNameMainOffset = kNameFunOffset + 4;
+
+  var ffi = new Object();
+  ffi.fun = func;
+
+  var data = bytes(
+    // signatures
+    kDeclSignatures, 1,
+    2, kAstI32, kAstF64, kAstF64, // (f64,f64) -> int
+    // -- foreign function
+    kDeclFunctions, 2,
+    kDeclFunctionName | kDeclFunctionImport,
+    0, 0,
+    kNameFunOffset, 0, 0, 0,    // name offset
+    // -- main function
+    kDeclFunctionName | kDeclFunctionExport,
+    0, 0,
+    kNameMainOffset, 0, 0, 0,   // name offset
+    kBodySize, 0,
+    // main body
+    kExprCallFunction, 0,       // --
+    kExprGetLocal, 0,           // --
+    kExprGetLocal, 1,           // --
+    // names
+    kDeclEnd,
+    'f', 'u', 'n', 0,           //  --
+    'm', 'a', 'i', 'n', 0       //  --
+  );
+
+  var module = WASM.instantiateModule(data, ffi);
+
+  assertEquals("function", typeof module.main);
+
+  return module.main;
+}
+
+
+function makeReentrantFFI(func) {
+  var main = makeFFI(reenter);
+
+  function reenter(a, b) {
+    print(" reenter " + a);
+    if (a > 0) main(a - 1, b);
+    else func();
+  }
+  return main;
+}
+
+
+function runTest(builder) {
+  // ---- THROWING TEST -----------------------------------------------
+
+  function throwadd(a, b) {
+    print("-- trying throw --");
+    throw a + b;
+  }
+
+  function throwa(a) {
+    print("-- trying throw --");
+    throw a;
+  }
+
+  function throwstr() {
+    print("-- trying throw --");
+    throw "string";
+  }
+
+  assertThrows(builder(throwadd));
+  assertThrows(builder(throwa));
+  assertThrows(builder(throwstr));
+
+  try {
+    builder(throwadd)(7.8, 9.9);
+  } catch(e) {
+    print(e);
+  }
+
+  try {
+    builder(throwa)(11.8, 9.3);
+  } catch(e) {
+    print(e);
+  }
+
+
+  try {
+    builder(throwstr)(3, 5);
+  } catch(e) {
+    print(e);
+  }
+
+
+  // ---- DEOPT TEST -----------------------------------------------
+
+  function deopt() {
+    print("-- trying deopt --");
+    %DeoptimizeFunction(deopter);
+  }
+
+  var deopter = builder(deopt);
+
+  deopter(5, 5);
+  for (var i = 0; i < 9; i++) {
+    deopter(6, 6);
+  }
+
+
+  // ---- GC TEST -----------------------------------------------
+  function dogc(a, b) {
+    print("-- trying gc --");
+    gc();
+    gc();
+  }
+
+
+  var gcer = builder(dogc);
+  gcer(7, 7);
+
+  for (var i = 0; i < 9; i++) {
+    gcer(8, 8);
+  }
+}
+
+runTest(makeReentrantFFI);
+runTest(makeFFI);