da03262e4c
Mutable globals are stored in the instance differently, so they must be exported differently as well. Also fix a counting bug that occurred when a module contained a global and an imported mutable global (CalculateGlobalOffsets is called twice). Bug: v8:7625 Change-Id: I1cd7ef5d6ff7cb7e09239035f89d7b36d0436063 Reviewed-on: https://chromium-review.googlesource.com/1096673 Commit-Queue: Ben Smith <binji@chromium.org> Reviewed-by: Ben Titzer <titzer@chromium.org> Cr-Commit-Position: refs/heads/master@{#53681}
102 lines
3.3 KiB
JavaScript
102 lines
3.3 KiB
JavaScript
// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --experimental-wasm-mut-global
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load("test/mjsunit/wasm/wasm-constants.js");
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load("test/mjsunit/wasm/wasm-module-builder.js");
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(function exportImmutableGlobal() {
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var builder = new WasmModuleBuilder();
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let globals = [
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[kWasmI32, 'i32_noinit'],
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[kWasmI32, 'i32', 4711],
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[kWasmF32, 'f32_noinit'],
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[kWasmF32, 'f32', Math.fround(3.14)],
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[kWasmF64, 'f64_noinit'],
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[kWasmF64, 'f64', 1 / 7]
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];
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for (let [type, name, value] of globals) {
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let global_builder = builder.addGlobal(type, false).exportAs(name);
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if (value) global_builder.init = value;
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}
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var instance = builder.instantiate();
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for (let [type, name, value] of globals) {
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let obj = instance.exports[name];
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assertEquals("object", typeof obj, name);
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assertTrue(obj instanceof WebAssembly.Global, name);
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assertEquals(value || 0, obj.value, name);
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assertThrows(() => obj.value = 0);
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}
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})();
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(function canExportI64Global() {
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var builder = new WasmModuleBuilder();
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builder.addGlobal(kWasmI64, false).exportAs('g');
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builder.instantiate();
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})();
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(function canExportAndImportI64() {
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var builder = new WasmModuleBuilder();
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builder.addGlobal(kWasmI64, false).exportAs('g');
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let g = builder.instantiate().exports.g;
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builder = new WasmModuleBuilder();
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builder.addImportedGlobal("mod", "g", kWasmI64);
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builder.instantiate({mod: {g: g}});
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})();
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(function exportMutableGlobal() {
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var builder = new WasmModuleBuilder();
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let globals = [
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[kWasmI32, 'i32_noinit'], // -
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[kWasmI32, 'i32', 4711], // -
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[kWasmF32, 'f32_noinit'], // -
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[kWasmF32, 'f32', Math.fround(3.14)], // -
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[kWasmF64, 'f64_noinit'], // -
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[kWasmF64, 'f64', 1 / 7] // -
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];
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for (let [index, [type, name, value]] of globals.entries()) {
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let global_builder = builder.addGlobal(type, true).exportAs(name);
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if (value) global_builder.init = value;
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builder.addFunction("get " + name, makeSig([], [type]))
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.addBody([kExprGetGlobal, index])
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.exportFunc();
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builder.addFunction("set " + name, makeSig([type], []))
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.addBody([kExprGetLocal, 0, kExprSetGlobal, index])
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.exportFunc();
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}
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var instance = builder.instantiate();
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for (let [type, name, value] of globals) {
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let obj = instance.exports[name];
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assertEquals(value || 0, obj.value, name);
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// Changing the exported global should change the instance's global.
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obj.value = 1001;
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assertEquals(1001, instance.exports['get ' + name](), name);
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// Changing the instance's global should change the exported global.
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instance.exports['set ' + name](112358);
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assertEquals(112358, obj.value, name);
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}
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})();
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(function exportImportedMutableGlobal() {
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let builder = new WasmModuleBuilder();
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builder.addGlobal(kWasmI32, true).exportAs('g1');
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let g1 = builder.instantiate().exports.g1;
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builder = new WasmModuleBuilder();
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builder.addImportedGlobal("mod", "g1", kWasmI32, true);
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builder.addExportOfKind('g2', kExternalGlobal, 0);
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let g2 = builder.instantiate({mod: {g1: g1}}).exports.g2;
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g1.value = 123;
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assertEquals(g1.value, g2.value);
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})();
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