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// Copyright 2018 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-module-builder.js");
(function exportImmutableGlobal() {
var builder = new WasmModuleBuilder();
let globals = [
[kWasmI32, 'i32_noinit'],
[kWasmI32, 'i32', 4711],
[kWasmF32, 'f32_noinit'],
[kWasmF32, 'f32', Math.fround(3.14)],
[kWasmF64, 'f64_noinit'],
[kWasmF64, 'f64', 1 / 7]
];
for (let [type, name, value] of globals) {
let global_builder = builder.addGlobal(type, false).exportAs(name);
if (value) global_builder.init = value;
}
var instance = builder.instantiate();
for (let [type, name, value] of globals) {
let obj = instance.exports[name];
assertEquals("object", typeof obj, name);
assertTrue(obj instanceof WebAssembly.Global, name);
assertEquals(value || 0, obj.value, name);
assertThrows(() => obj.value = 0);
}
})();
(function canExportI64Global() {
var builder = new WasmModuleBuilder();
builder.addGlobal(kWasmI64, false).exportAs('g');
builder.instantiate();
})();
(function canExportAndImportI64() {
var builder = new WasmModuleBuilder();
builder.addGlobal(kWasmI64, false).exportAs('g');
let g = builder.instantiate().exports.g;
builder = new WasmModuleBuilder();
builder.addImportedGlobal("mod", "g", kWasmI64);
builder.instantiate({mod: {g: g}});
})();
(function exportMutableGlobal() {
var builder = new WasmModuleBuilder();
let globals = [
[kWasmI32, 'i32_noinit'], // -
[kWasmI32, 'i32', 4711], // -
[kWasmF32, 'f32_noinit'], // -
[kWasmF32, 'f32', Math.fround(3.14)], // -
[kWasmF64, 'f64_noinit'], // -
[kWasmF64, 'f64', 1 / 7] // -
];
for (let [index, [type, name, value]] of globals.entries()) {
let global_builder = builder.addGlobal(type, true).exportAs(name);
if (value) global_builder.init = value;
builder.addFunction("get " + name, makeSig([], [type]))
.addBody([kExprGetGlobal, index])
.exportFunc();
builder.addFunction("set " + name, makeSig([type], []))
.addBody([kExprGetLocal, 0, kExprSetGlobal, index])
.exportFunc();
}
var instance = builder.instantiate();
for (let [type, name, value] of globals) {
let obj = instance.exports[name];
assertEquals(value || 0, obj.value, name);
// Changing the exported global should change the instance's global.
obj.value = 1001;
assertEquals(1001, instance.exports['get ' + name](), name);
// Changing the instance's global should change the exported global.
instance.exports['set ' + name](112358);
assertEquals(112358, obj.value, name);
}
})();
(function exportImportedMutableGlobal() {
let builder = new WasmModuleBuilder();
builder.addGlobal(kWasmI32, true).exportAs('g1');
let g1 = builder.instantiate().exports.g1;
builder = new WasmModuleBuilder();
builder.addImportedGlobal("mod", "g1", kWasmI32, true);
builder.addExportOfKind('g2', kExternalGlobal, 0);
let g2 = builder.instantiate({mod: {g1: g1}}).exports.g2;
g1.value = 123;
assertEquals(g1.value, g2.value);
})();
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