| // 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. |
| |
| // Flags: --expose-wasm |
| |
| load('test/mjsunit/wasm/wasm-module-builder.js'); |
| |
| let k1GiB = 1 * 1024 * 1024 * 1024; |
| let k4GiB = 4 * k1GiB; |
| // TODO(4153): Raise this to 4GiB, but only on 64-bit platforms. |
| let kMaxMemory = 2 * k1GiB - kPageSize; |
| |
| (function Test() { |
| var memory; |
| |
| function BuildAccessors(type, load_opcode, store_opcode) { |
| builder = new WasmModuleBuilder(); |
| builder.addImportedMemory("i", "mem"); |
| builder.addFunction("load", makeSig([kWasmI32], [type])) |
| .addBody([ // -- |
| kExprLocalGet, 0, // -- |
| load_opcode, 0, 0, // -- |
| ]) // -- |
| .exportFunc(); |
| builder.addFunction("store", makeSig([kWasmI32, type], [])) |
| .addBody([ // -- |
| kExprLocalGet, 0, // -- |
| kExprLocalGet, 1, // -- |
| store_opcode, 0, 0, // -- |
| ]) // -- |
| .exportFunc(); |
| let i = builder.instantiate({i: {mem: memory}}); |
| return {load: i.exports.load, store: i.exports.store}; |
| } |
| |
| function probe(a, f) { |
| print("------------------------"); |
| let stride = kPageSize * 32; // Don't check every page to save time. |
| let max = kMaxMemory; |
| for (let i = 0; i < max; i += stride) { |
| a.store(i, f(i)); |
| } |
| for (let i = 0; i < max; i += stride) { |
| assertEquals(f(i), a.load(i)); |
| } |
| } |
| |
| try { |
| let kPages = kMaxMemory / kPageSize; |
| memory = new WebAssembly.Memory({ initial: kPages, maximum: kPages }); |
| } catch (e) { |
| print("OOM: sorry, best effort max memory size test."); |
| return; |
| } |
| |
| assertEquals(kMaxMemory, memory.buffer.byteLength); |
| |
| { |
| let a = BuildAccessors(kWasmI32, kExprI32LoadMem, kExprI32StoreMem); |
| probe(a, i => (0xaabbccee ^ ((i >> 11) * 0x110005)) | 0); |
| } |
| |
| { |
| let a = BuildAccessors(kWasmI32, kExprI32LoadMem16U, kExprI32StoreMem16); |
| probe(a, i => (0xccee ^ ((i >> 11) * 0x110005)) & 0xFFFF); |
| } |
| |
| { |
| let a = BuildAccessors(kWasmI32, kExprI32LoadMem8U, kExprI32StoreMem8); |
| probe(a, i => (0xee ^ ((i >> 11) * 0x05)) & 0xFF); |
| } |
| |
| { |
| let a = BuildAccessors(kWasmF64, kExprF64LoadMem, kExprF64StoreMem); |
| probe(a, i => 0xaabbccee ^ ((i >> 11) * 0x110005)); |
| } |
| |
| { |
| let a = BuildAccessors(kWasmF32, kExprF32LoadMem, kExprF32StoreMem); |
| probe(a, i => Math.fround(0xaabbccee ^ ((i >> 11) * 0x110005))); |
| } |
| })(); |