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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-constants.js");
load("test/mjsunit/wasm/wasm-module-builder.js");
let kReturnValue = 117;
let buffer = (() => {
let builder = new WasmModuleBuilder();
builder.addMemory(1, 1, true);
builder.addFunction("main", kSig_i)
.addBody([kExprI8Const, kReturnValue])
.exportFunc();
return builder.toBuffer();
})()
function CheckInstance(instance) {
assertFalse(instance === undefined);
assertFalse(instance === null);
assertFalse(instance === 0);
assertEquals("object", typeof instance);
// Check the memory is an ArrayBuffer.
var mem = instance.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(65536, buf.byteLength);
for (var i = 0; i < 4; i++) {
instance.exports.memory = 0; // should be ignored
mem.buffer = 0; // should be ignored
assertSame(mem, instance.exports.memory);
assertSame(buf, mem.buffer);
}
// Check the properties of the main function.
let main = instance.exports.main;
assertFalse(main === undefined);
assertFalse(main === null);
assertFalse(main === 0);
assertEquals("function", typeof main);
assertEquals(kReturnValue, main());
}
// Deprecated experimental API.
CheckInstance(Wasm.instantiateModule(buffer));
// Official API
let module = new WebAssembly.Module(buffer);
CheckInstance(new WebAssembly.Instance(module));
let promise = WebAssembly.compile(buffer);
promise.then(module => CheckInstance(new WebAssembly.Instance(module)));
// Check that validate works correctly for a module.
assertTrue(WebAssembly.validate(buffer));
assertFalse(WebAssembly.validate(bytes(88, 88, 88, 88, 88, 88, 88, 88)));
// Negative tests.
(function InvalidModules() {
print("InvalidModules...");
let invalid_cases = [undefined, 1, "", "a", {some:1, obj: "b"}];
let len = invalid_cases.length;
for (var i = 0; i < len; ++i) {
try {
let instance = new WebAssembly.Instance(invalid_cases[i]);
assertUnreachable("should not be able to instantiate invalid modules.");
} catch (e) {
assertContains("Argument 0", e.toString());
}
}
})();
// Compile async an invalid blob.
(function InvalidBinaryAsyncCompilation() {
print("InvalidBinaryAsyncCompilation...");
let builder = new WasmModuleBuilder();
builder.addFunction("f", kSig_i_i)
.addBody([kExprCallFunction, 0]);
let promise = WebAssembly.compile(builder.toBuffer());
promise
.then(compiled =>
assertUnreachable("should not be able to compile invalid blob."))
.catch(e => assertContains("invalid signature index", e.toString()));
})();
// Multiple instances tests.
(function ManyInstances() {
print("ManyInstances...");
let compiled_module = new WebAssembly.Module(buffer);
let instance_1 = new WebAssembly.Instance(compiled_module);
let instance_2 = new WebAssembly.Instance(compiled_module);
assertTrue(instance_1 != instance_2);
})();
(function ManyInstancesAsync() {
print("ManyInstancesAsync...");
let promise = WebAssembly.compile(buffer);
promise.then(compiled_module => {
let instance_1 = new WebAssembly.Instance(compiled_module);
let instance_2 = new WebAssembly.Instance(compiled_module);
assertTrue(instance_1 != instance_2);
});
})();
(function InstancesAreIsolatedFromEachother() {
print("InstancesAreIsolatedFromEachother...");
var builder = new WasmModuleBuilder();
builder.addMemory(1,1, true);
var kSig_v_i = makeSig([kAstI32], []);
var signature = builder.addType(kSig_v_i);
builder.addImport("some_value", kSig_i);
builder.addImport("writer", signature);
builder.addFunction("main", kSig_i_i)
.addBody([
kExprGetLocal, 0,
kExprI32LoadMem, 0, 0,
kExprI32Const, 1,
kExprCallIndirect, signature,
kExprGetLocal,0,
kExprI32LoadMem,0, 0,
kExprCallFunction, 0,
kExprI32Add
]).exportFunc();
// writer(mem[i]);
// return mem[i] + some_value();
builder.addFunction("_wrap_writer", signature)
.addBody([
kExprGetLocal, 0,
kExprCallFunction, 1]);
builder.appendToTable([2, 3]);
var module = new WebAssembly.Module(builder.toBuffer());
var mem_1 = new ArrayBuffer(4);
var mem_2 = new ArrayBuffer(4);
var view_1 = new Int32Array(mem_1);
var view_2 = new Int32Array(mem_2);
view_1[0] = 42;
view_2[0] = 1000;
var outval_1;
var outval_2;
var i1 = new WebAssembly.Instance(module, {some_value: () => 1,
writer: (x)=>outval_1 = x }, mem_1);
var i2 = new WebAssembly.Instance(module, {some_value: () => 2,
writer: (x)=>outval_2 = x }, mem_2);
assertEquals(43, i1.exports.main(0));
assertEquals(1002, i2.exports.main(0));
assertEquals(42, outval_1);
assertEquals(1000, outval_2);
})();
(function GlobalsArePrivateToTheInstance() {
print("GlobalsArePrivateToTheInstance...");
var builder = new WasmModuleBuilder();
builder.addGlobal(kAstI32);
builder.addFunction("read", kSig_i_v)
.addBody([
kExprGetGlobal, 0])
.exportFunc();
builder.addFunction("write", kSig_v_i)
.addBody([
kExprGetLocal, 0,
kExprSetGlobal, 0])
.exportFunc();
var module = new WebAssembly.Module(builder.toBuffer());
var i1 = new WebAssembly.Instance(module);
var i2 = new WebAssembly.Instance(module);
i1.exports.write(1);
i2.exports.write(2);
assertEquals(1, i1.exports.read());
assertEquals(2, i2.exports.read());
})();
(function InstanceMemoryIsIsolated() {
print("InstanceMemoryIsIsolated...");
var builder = new WasmModuleBuilder();
builder.addMemory(1,1, true);
builder.addFunction("f", kSig_i)
.addBody([
kExprI32Const, 0,
kExprI32LoadMem, 0, 0
]).exportFunc();
var mem_1 = new ArrayBuffer(65536);
var mem_2 = new ArrayBuffer(65536);
var view_1 = new Int32Array(mem_1);
var view_2 = new Int32Array(mem_2);
view_1[0] = 1;
view_2[0] = 1000;
var module = new WebAssembly.Module(builder.toBuffer());
var i1 = new WebAssembly.Instance(module, null, mem_1);
var i2 = new WebAssembly.Instance(module, null, mem_2);
assertEquals(1, i1.exports.f());
assertEquals(1000, i2.exports.f());
})();
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