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// 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-wasm
load("test/mjsunit/wasm/wasm-module-builder.js");
function assertModule(module, memsize) {
// 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.exports.memory;
assertFalse(mem === undefined);
assertFalse(mem === null);
assertFalse(mem === 0);
assertEquals("object", typeof mem);
assertTrue(mem instanceof WebAssembly.Memory);
var buf = mem.buffer;
assertTrue(buf instanceof ArrayBuffer);
assertEquals(memsize, buf.byteLength);
for (var i = 0; i < 4; i++) {
module.exports.memory = 0; // should be ignored
mem.buffer = 0; // should be ignored
assertSame(mem, module.exports.memory);
assertSame(buf, mem.buffer);
}
}
function assertFunction(module, func) {
assertEquals("object", typeof module.exports);
var exp = module.exports[func];
assertFalse(exp === undefined);
assertFalse(exp === null);
assertFalse(exp === 0);
assertEquals("function", typeof exp);
return exp;
}
(function SubTest() {
var builder = new WasmModuleBuilder();
builder.addMemory(1, 1, true);
builder.addFunction("sub", kSig_i_ii)
.addBody([
kExprGetLocal, 0, // --
kExprGetLocal, 1, // --
kExprI32Sub, // --
])
.exportFunc()
var module = builder.instantiate();
assertModule(module, kPageSize);
// Check the properties of the sub function.
var sub = assertFunction(module, "sub");
assertEquals(-55, sub(33, 88));
assertEquals(-55555, sub(33333, 88888));
assertEquals(-5555555, sub(3333333, 8888888));
})();
(function NopTest() {
var builder = new WasmModuleBuilder();
var kPages = 2;
builder.addMemory(kPages, kPages, true);
builder.addFunction("nop", kSig_v_v)
.addBody([kExprNop])
.exportFunc();
var module = builder.instantiate();
assertModule(module, kPageSize * kPages);
var nop = assertFunction(module, "nop");
assertEquals(undefined, nop());
})();
(function testLt() {
var builder = new WasmModuleBuilder();
var kPages = 3;
builder.addMemory(kPages, kPages, true);
builder.addFunction("flt", kSig_i_dd)
.addBody([
kExprGetLocal, 0, // --
kExprGetLocal, 1, // --
kExprF64Lt // --
]) // --
.exportFunc();
var module = builder.instantiate();
assertModule(module, kPageSize * kPages);
var flt = assertFunction(module, "flt");
assertEquals(1, flt(-2, -1));
assertEquals(0, flt(7.3, 7.1));
assertEquals(1, flt(7.1, 7.3));
})();
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