// Copyright 2016 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. #include "src/wasm/wasm-function-name-table.h" #include "src/wasm/wasm-module.h" #include "test/cctest/cctest.h" using namespace v8::internal; using namespace v8::internal::wasm; namespace { #define CHECK_STREQ(exp, found) \ do { \ Vector exp_ = (exp); \ Vector found_ = (found); \ if (V8_UNLIKELY(exp_.length() != found_.length() || \ memcmp(exp_.start(), found_.start(), exp_.length()))) { \ V8_Fatal(__FILE__, __LINE__, \ "Check failed: (%s) != (%s) ('%.*s' vs '%.*s').", #exp, #found, \ exp_.length(), exp_.start(), found_.length(), found_.start()); \ } \ } while (0) void testFunctionNameTable(Vector> names) { Isolate *isolate = CcTest::InitIsolateOnce(); HandleAndZoneScope scope; WasmModule module; std::vector all_names; // No name should have offset 0, because that encodes unnamed functions. // In real wasm binary, offset 0 is impossible anyway. all_names.push_back('\0'); uint32_t func_index = 0; for (Vector name : names) { size_t name_offset = name.start() ? all_names.size() : 0; all_names.insert(all_names.end(), name.start(), name.start() + name.length()); // Make every second function name null-terminated. if (func_index % 2) all_names.push_back('\0'); module.functions.push_back({nullptr, 0, 0, static_cast(name_offset), static_cast(name.length()), 0, 0}); ++func_index; } module.module_start = reinterpret_cast(all_names.data()); module.module_end = module.module_start + all_names.size(); Handle wasm_function_name_table = BuildFunctionNamesTable(isolate, &module); CHECK(wasm_function_name_table->IsByteArray()); func_index = 0; for (Vector name : names) { MaybeHandle string = GetWasmFunctionNameFromTable( Handle::cast(wasm_function_name_table), func_index); if (name.start()) { CHECK(string.ToHandleChecked()->IsUtf8EqualTo(name)); } else { CHECK(string.is_null()); } ++func_index; } } void testFunctionNameTable(Vector names) { std::vector> names_vec; for (const char *name : names) names_vec.push_back(name ? CStrVector(name) : Vector()); testFunctionNameTable(Vector>( names_vec.data(), static_cast(names_vec.size()))); } } // namespace TEST(NoFunctions) { testFunctionNameTable(Vector>()); } TEST(OneFunctions) { const char *names[] = {"foo"}; testFunctionNameTable(ArrayVector(names)); } TEST(ThreeFunctions) { const char *names[] = {"foo", "bar", "baz"}; testFunctionNameTable(ArrayVector(names)); } TEST(OneUnnamedFunction) { const char *names[] = {""}; testFunctionNameTable(ArrayVector(names)); } TEST(UnnamedFirstFunction) { const char *names[] = {"", "bar", "baz"}; testFunctionNameTable(ArrayVector(names)); } TEST(UnnamedLastFunction) { const char *names[] = {"bar", "baz", ""}; testFunctionNameTable(ArrayVector(names)); } TEST(ThreeUnnamedFunctions) { const char *names[] = {"", "", ""}; testFunctionNameTable(ArrayVector(names)); } TEST(UTF8Names) { const char *names[] = {"↱fun↰", "↺", "alpha:α beta:β"}; testFunctionNameTable(ArrayVector(names)); } TEST(UnnamedVsEmptyNames) { const char *names[] = {"", nullptr, nullptr, ""}; testFunctionNameTable(ArrayVector(names)); }