Initial import of v8-native WASM.

test/mjsunit/wasm/instantiate-module-basic.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.
+
+load("test/mjsunit/wasm/wasm-constants.js");
+
+var kReturnValue = 117;
+
+var kBodySize = 2;
+var kNameOffset = 19 + kBodySize + 1;
+
+var data = bytes(
+  // -- memory
+  kDeclMemory,
+  10, 10, 1,
+  // -- signatures
+  kDeclSignatures, 1,
+  0, kAstI32,                 // signature: void -> int
+  // -- main function
+  kDeclFunctions, 1,
+  kDeclFunctionName | kDeclFunctionExport,
+  0, 0,                       // signature index
+  kNameOffset, 0, 0, 0,       // name offset
+  kBodySize, 0,               // body size
+  // -- body
+  kExprI8Const,               // --
+  kReturnValue,               // --
+  kDeclEnd,
+  'm', 'a', 'i', 'n', 0       // name
+);
+
+var module = WASM.instantiateModule(data);
+
+// Check the module exists.
+assertFalse(module === undefined);
+assertFalse(module === null);
+assertFalse(module === 0);
+assertEquals("object", typeof module);
+
+// Check the memory is an ArrayBuffer.
+var mem = module.memory;
+assertFalse(mem === undefined);
+assertFalse(mem === null);
+assertFalse(mem === 0);
+assertEquals("object", typeof mem);
+assertTrue(mem instanceof ArrayBuffer);
+for (var i = 0; i < 4; i++) {
+  module.memory = 0;  // should be ignored
+  assertEquals(mem, module.memory);
+}
+
+assertEquals(1024, module.memory.byteLength);
+
+// Check the properties of the main function.
+assertFalse(module.main === undefined);
+assertFalse(module.main === null);
+assertFalse(module.main === 0);
+assertEquals("function", typeof module.main);
+
+assertEquals(kReturnValue, module.main());