| // 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<const char> exp_ = (exp); \ |
| Vector<const char> 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<Vector<const char>> names) { |
| Isolate *isolate = CcTest::InitIsolateOnce(); |
| HandleAndZoneScope scope; |
| |
| WasmModule module; |
| std::vector<char> 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<const char> 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<uint32_t>(name_offset), |
| static_cast<uint32_t>(name.length()), 0, 0}); |
| ++func_index; |
| } |
| |
| module.module_start = reinterpret_cast<byte *>(all_names.data()); |
| module.module_end = module.module_start + all_names.size(); |
| |
| Handle<Object> wasm_function_name_table = |
| BuildFunctionNamesTable(isolate, &module); |
| CHECK(wasm_function_name_table->IsByteArray()); |
| |
| func_index = 0; |
| for (Vector<const char> name : names) { |
| MaybeHandle<String> string = GetWasmFunctionNameFromTable( |
| Handle<ByteArray>::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<const char *> names) { |
| std::vector<Vector<const char>> names_vec; |
| for (const char *name : names) |
| names_vec.push_back(name ? CStrVector(name) : Vector<const char>()); |
| testFunctionNameTable(Vector<Vector<const char>>( |
| names_vec.data(), static_cast<int>(names_vec.size()))); |
| } |
| |
| } // namespace |
| |
| TEST(NoFunctions) { testFunctionNameTable(Vector<Vector<const char>>()); } |
| |
| 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)); |
| } |