Initial import of v8-native WASM.

test/mjsunit/wasm/calls.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 module = (function () {
+  var kBodySize = 5;
+  var kNameOffset = 21 + kBodySize + 1;
+
+  return WASM.instantiateModule(bytes(
+    // -- memory
+    kDeclMemory,
+    12, 12, 1,
+    // -- signatures
+    kDeclSignatures, 1,
+    2, kAstI32, kAstI32, kAstI32, // int, int -> int
+    // -- functions
+    kDeclFunctions, 1,
+    kDeclFunctionName | kDeclFunctionExport,
+    0, 0,
+    kNameOffset, 0, 0, 0,         // name offset
+    kBodySize, 0,
+    // -- body
+    kExprI32Sub,                  // --
+    kExprGetLocal, 0,             // --
+    kExprGetLocal, 1,             // --
+    kDeclEnd,
+    's', 'u', 'b', 0              // name
+  ));
+})();
+
+// 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(4096, module.memory.byteLength);
+
+// Check the properties of the sub function.
+assertEquals("function", typeof module.sub);
+
+assertEquals(-55, module.sub(33, 88));
+assertEquals(-55555, module.sub(33333, 88888));
+assertEquals(-5555555, module.sub(3333333, 8888888));
+
+
+var module = (function() {
+  var kBodySize = 1;
+  var kNameOffset2 = 19 + kBodySize + 1;
+
+  return WASM.instantiateModule(bytes(
+    // -- memory
+    kDeclMemory,
+    12, 12, 1,
+    // -- signatures
+    kDeclSignatures, 1,
+    0, kAstStmt,                // signature: void -> void
+    // -- functions
+    kDeclFunctions, 1,
+    kDeclFunctionName | kDeclFunctionExport,
+    0, 0,                       // signature index
+    kNameOffset2, 0, 0, 0,      // name offset
+    kBodySize, 0,
+    kExprNop,                   // body
+    kDeclEnd,
+    'n', 'o', 'p', 0            // name
+  ));
+})();
+
+// 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(4096, module.memory.byteLength);
+
+// Check the properties of the sub function.
+assertFalse(module.nop === undefined);
+assertFalse(module.nop === null);
+assertFalse(module.nop === 0);
+assertEquals("function", typeof module.nop);
+
+assertEquals(undefined, module.nop());
+
+(function testLt() {
+  var kBodySize = 5;
+  var kNameOffset = 21 + kBodySize + 1;
+
+  var data = bytes(
+    // -- memory
+    kDeclMemory,
+    12, 12, 1,
+    // -- signatures
+    kDeclSignatures, 1,
+    2, kAstI32, kAstF64, kAstF64, // (f64,f64)->int
+    // -- functions
+    kDeclFunctions, 1,
+    kDeclFunctionName | kDeclFunctionExport,
+    0, 0,                         // signature index
+    kNameOffset, 0, 0, 0,         // name offset
+    kBodySize, 0,
+    // -- body
+    kExprF64Lt,                   // --
+    kExprGetLocal, 0,             // --
+    kExprGetLocal, 1,             // --
+    kDeclEnd,
+    'f', 'l', 't', 0              // name
+  );
+
+  var module = WASM.instantiateModule(data);
+
+  assertEquals("function", typeof module.flt);
+  assertEquals(1, module.flt(-2, -1));
+  assertEquals(0, module.flt(7.3, 7.1));
+  assertEquals(1, module.flt(7.1, 7.3));
+})();