// Copyright 2015 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 "test/unittests/test-utils.h" #include "src/handles.h" #include "src/objects-inl.h" #include "src/wasm/module-decoder.h" #include "src/wasm/wasm-macro-gen.h" #include "src/wasm/wasm-opcodes.h" namespace v8 { namespace internal { namespace wasm { #define EMPTY_FUNCTION(sig_index) 0, SIG_INDEX(sig_index), U16_LE(0) #define SIZEOF_EMPTY_FUNCTION ((size_t)5) #define EMPTY_BODY 0 #define SIZEOF_EMPTY_BODY ((size_t)1) #define NOP_BODY 2, 0, kExprNop #define SIZEOF_NOP_BODY ((size_t)3) #define SIG_ENTRY_i_i SIG_ENTRY_x_x(kLocalI32, kLocalI32) #define UNKNOWN_EMPTY_SECTION_NAME 1, '\0' #define UNKNOWN_SECTION_NAME 4, 'l', 'u', 'l', 'z' #define SECTION(NAME, EXTRA_SIZE) WASM_SECTION_##NAME, U32V_1(EXTRA_SIZE) #define SIGNATURES_SECTION(count, ...) \ SECTION(SIGNATURES, 1 + 3 * (count)), U32V_1(count), __VA_ARGS__ #define FUNCTION_SIGNATURES_SECTION(count, ...) \ SECTION(FUNCTION_SIGNATURES, 1 + (count)), U32V_1(count), __VA_ARGS__ #define FOO_STRING 3, 'f', 'o', 'o' #define NO_LOCAL_NAMES 0 #define EMPTY_SIGNATURES_SECTION SECTION(SIGNATURES, 1), 0 #define EMPTY_FUNCTION_SIGNATURES_SECTION SECTION(FUNCTION_SIGNATURES, 1), 0 #define EMPTY_FUNCTION_BODIES_SECTION SECTION(FUNCTION_BODIES, 1), 0 #define EMPTY_NAMES_SECTION SECTION(NAMES, 1), 0 #define X1(...) __VA_ARGS__ #define X2(...) __VA_ARGS__, __VA_ARGS__ #define X3(...) __VA_ARGS__, __VA_ARGS__, __VA_ARGS__ #define X4(...) __VA_ARGS__, __VA_ARGS__, __VA_ARGS__, __VA_ARGS__ #define ONE_EMPTY_FUNCTION WASM_SECTION_FUNCTION_SIGNATURES, 1 + 1 * 1, 1, X1(0) #define TWO_EMPTY_FUNCTIONS \ WASM_SECTION_FUNCTION_SIGNATURES, 1 + 2 * 1, 2, X2(0) #define THREE_EMPTY_FUNCTIONS \ WASM_SECTION_FUNCTION_SIGNATURES, 1 + 3 * 1, 3, X3(0) #define FOUR_EMPTY_FUNCTIONS \ WASM_SECTION_FUNCTION_SIGNATURES, 1 + 4 * 1, 4, X4(0) #define ONE_EMPTY_BODY \ WASM_SECTION_FUNCTION_BODIES, 1 + 1 * (1 + SIZEOF_EMPTY_BODY), 1, \ X1(SIZEOF_EMPTY_BODY, EMPTY_BODY) #define TWO_EMPTY_BODIES \ WASM_SECTION_FUNCTION_BODIES, 1 + 2 * (1 + SIZEOF_EMPTY_BODY), 2, \ X2(SIZEOF_EMPTY_BODY, EMPTY_BODY) #define THREE_EMPTY_BODIES \ WASM_SECTION_FUNCTION_BODIES, 1 + 3 * (1 + SIZEOF_EMPTY_BODY), 3, \ X3(SIZEOF_EMPTY_BODY, EMPTY_BODY) #define FOUR_EMPTY_BODIES \ WASM_SECTION_FUNCTION_BODIES, 1 + 4 * (1 + SIZEOF_EMPTY_BODY), 4, \ X4(SIZEOF_EMPTY_BODY, EMPTY_BODY) #define SIGNATURES_SECTION_VOID_VOID \ SECTION(SIGNATURES, 1 + SIZEOF_SIG_ENTRY_v_v), 1, SIG_ENTRY_v_v #define EXPECT_VERIFIES(data) \ do { \ ModuleResult result = DecodeModule(data, data + arraysize(data)); \ EXPECT_TRUE(result.ok()); \ if (result.val) delete result.val; \ } while (false) #define EXPECT_FAILURE_LEN(data, length) \ do { \ ModuleResult result = DecodeModule(data, data + length); \ EXPECT_FALSE(result.ok()); \ if (result.val) delete result.val; \ } while (false) #define EXPECT_FAILURE(data) EXPECT_FAILURE_LEN(data, sizeof(data)) #define EXPECT_OFF_END_FAILURE(data, min, max) \ do { \ for (size_t length = min; length < max; length++) { \ EXPECT_FAILURE_LEN(data, length); \ } \ } while (false) #define EXPECT_OK(result) \ do { \ EXPECT_TRUE(result.ok()); \ if (!result.ok()) { \ if (result.val) delete result.val; \ return; \ } \ } while (false) static size_t SizeOfVarInt(size_t value) { size_t size = 0; do { size++; value = value >> 7; } while (value > 0); return size; } struct LocalTypePair { uint8_t code; LocalType type; } kLocalTypes[] = {{kLocalI32, kAstI32}, {kLocalI64, kAstI64}, {kLocalF32, kAstF32}, {kLocalF64, kAstF64}}; class WasmModuleVerifyTest : public TestWithIsolateAndZone { public: ModuleResult DecodeModule(const byte* module_start, const byte* module_end) { // Add the WASM magic and version number automatically. size_t size = static_cast(module_end - module_start); byte header[] = {WASM_MODULE_HEADER}; size_t total = sizeof(header) + size; auto temp = new byte[total]; memcpy(temp, header, sizeof(header)); memcpy(temp + sizeof(header), module_start, size); ModuleResult result = DecodeWasmModule(isolate(), zone(), temp, temp + total, false, kWasmOrigin); delete[] temp; return result; } ModuleResult DecodeModuleNoHeader(const byte* module_start, const byte* module_end) { return DecodeWasmModule(isolate(), zone(), module_start, module_end, false, kWasmOrigin); } }; TEST_F(WasmModuleVerifyTest, WrongMagic) { for (uint32_t x = 1; x; x <<= 1) { const byte data[] = {U32_LE(kWasmMagic ^ x), U32_LE(kWasmVersion), SECTION(END, 0)}; ModuleResult result = DecodeModuleNoHeader(data, data + sizeof(data)); EXPECT_FALSE(result.ok()); if (result.val) delete result.val; } } TEST_F(WasmModuleVerifyTest, WrongVersion) { for (uint32_t x = 1; x; x <<= 1) { const byte data[] = {U32_LE(kWasmMagic), U32_LE(kWasmVersion ^ x), SECTION(END, 0)}; ModuleResult result = DecodeModuleNoHeader(data, data + sizeof(data)); EXPECT_FALSE(result.ok()); if (result.val) delete result.val; } } TEST_F(WasmModuleVerifyTest, DecodeEmpty) { static const byte data[] = {SECTION(END, 0)}; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, OneGlobal) { static const byte data[] = { SECTION(GLOBALS, 5), // -- 1, NAME_LENGTH(1), 'g', // name kLocalI32, // local type 0, // exported }; { // Should decode to exactly one global. ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); EXPECT_EQ(1, result.val->globals.size()); EXPECT_EQ(0, result.val->functions.size()); EXPECT_EQ(0, result.val->data_segments.size()); const WasmGlobal* global = &result.val->globals.back(); EXPECT_EQ(1, global->name_length); EXPECT_EQ(kAstI32, global->type); EXPECT_EQ(0, global->offset); EXPECT_FALSE(global->exported); if (result.val) delete result.val; } EXPECT_OFF_END_FAILURE(data, 1, sizeof(data)); } TEST_F(WasmModuleVerifyTest, Global_invalid_type) { static const byte data[] = { SECTION(GLOBALS, 5), // -- 1, NAME_LENGTH(1), 'g', // name 64, // invalid memory type 0, // exported }; ModuleResult result = DecodeModuleNoHeader(data, data + sizeof(data)); EXPECT_FALSE(result.ok()); if (result.val) delete result.val; } TEST_F(WasmModuleVerifyTest, ZeroGlobals) { static const byte data[] = { SECTION(GLOBALS, 1), // -- 0, // declare 0 globals }; ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); if (result.val) delete result.val; } static void AppendUint32v(std::vector& buffer, uint32_t val) { while (true) { uint32_t next = val >> 7; uint32_t out = val & 0x7f; if (next) { buffer.push_back(static_cast(0x80 | out)); val = next; } else { buffer.push_back(static_cast(out)); break; } } } TEST_F(WasmModuleVerifyTest, NGlobals) { static const byte data[] = { NO_NAME, // name length kLocalF32, // memory type 0, // exported }; for (uint32_t i = 0; i < 1000000; i = i * 13 + 1) { std::vector buffer; size_t size = SizeOfVarInt(i) + i * sizeof(data); const byte globals[] = {WASM_SECTION_GLOBALS, U32V_5(size)}; for (size_t g = 0; g != sizeof(globals); ++g) { buffer.push_back(globals[g]); } AppendUint32v(buffer, i); // Number of globals. for (uint32_t j = 0; j < i; j++) { buffer.insert(buffer.end(), data, data + sizeof(data)); } ModuleResult result = DecodeModule(&buffer[0], &buffer[0] + buffer.size()); EXPECT_OK(result); if (result.val) delete result.val; } } TEST_F(WasmModuleVerifyTest, GlobalWithInvalidNameOffset) { static const byte data[] = { SECTION(GLOBALS, 7), 1, // declare one global NO_NAME, // name offset 33, // memory type 0, // exported }; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, GlobalWithInvalidMemoryType) { static const byte data[] = { SECTION(GLOBALS, 7), 1, // declare one global NO_NAME, // name offset 33, // memory type 0, // exported }; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, TwoGlobals) { static const byte data[] = { SECTION(GLOBALS, 7), 2, NO_NAME, // #0: name length kLocalF32, // type 0, // exported NO_NAME, // #1: name length kLocalF64, // type 1, // exported }; { // Should decode to exactly two globals. ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); EXPECT_EQ(2, result.val->globals.size()); EXPECT_EQ(0, result.val->functions.size()); EXPECT_EQ(0, result.val->data_segments.size()); const WasmGlobal* g0 = &result.val->globals[0]; const WasmGlobal* g1 = &result.val->globals[1]; EXPECT_EQ(0, g0->name_length); EXPECT_EQ(kAstF32, g0->type); EXPECT_EQ(0, g0->offset); EXPECT_FALSE(g0->exported); EXPECT_EQ(0, g1->name_length); EXPECT_EQ(kAstF64, g1->type); EXPECT_EQ(8, g1->offset); EXPECT_TRUE(g1->exported); if (result.val) delete result.val; } EXPECT_OFF_END_FAILURE(data, 1, sizeof(data)); } TEST_F(WasmModuleVerifyTest, OneSignature) { { static const byte data[] = {SIGNATURES_SECTION_VOID_VOID}; EXPECT_VERIFIES(data); } { static const byte data[] = {SECTION(SIGNATURES, 1 + SIZEOF_SIG_ENTRY_x_x), 1, SIG_ENTRY_i_i}; EXPECT_VERIFIES(data); } } TEST_F(WasmModuleVerifyTest, MultipleSignatures) { static const byte data[] = { SECTION(SIGNATURES, 1 + SIZEOF_SIG_ENTRY_v_v + SIZEOF_SIG_ENTRY_x_x + SIZEOF_SIG_ENTRY_x_xx), // -- 3, // -- SIG_ENTRY_v_v, // void -> void SIG_ENTRY_x_x(kLocalI32, kLocalF32), // f32 -> i32 SIG_ENTRY_x_xx(kLocalI32, kLocalF64, kLocalF64), // f64,f64 -> i32 }; ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); EXPECT_EQ(3, result.val->signatures.size()); if (result.val->signatures.size() == 3) { EXPECT_EQ(0, result.val->signatures[0]->return_count()); EXPECT_EQ(1, result.val->signatures[1]->return_count()); EXPECT_EQ(1, result.val->signatures[2]->return_count()); EXPECT_EQ(0, result.val->signatures[0]->parameter_count()); EXPECT_EQ(1, result.val->signatures[1]->parameter_count()); EXPECT_EQ(2, result.val->signatures[2]->parameter_count()); } if (result.val) delete result.val; EXPECT_OFF_END_FAILURE(data, 1, sizeof(data)); } TEST_F(WasmModuleVerifyTest, OneDataSegment) { const byte kDataSegmentSourceOffset = 30; const byte data[] = { SECTION(MEMORY, 3), 28, 28, 1, SECTION(DATA_SEGMENTS, 8), 1, U32V_3(0x9bbaa), // dest addr U32V_1(3), // source size 'a', 'b', 'c' // data bytes }; { EXPECT_VERIFIES(data); ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); EXPECT_EQ(0, result.val->globals.size()); EXPECT_EQ(0, result.val->functions.size()); EXPECT_EQ(1, result.val->data_segments.size()); const WasmDataSegment* segment = &result.val->data_segments.back(); EXPECT_EQ(0x9bbaa, segment->dest_addr); EXPECT_EQ(kDataSegmentSourceOffset, segment->source_offset); EXPECT_EQ(3, segment->source_size); EXPECT_TRUE(segment->init); if (result.val) delete result.val; } EXPECT_OFF_END_FAILURE(data, 13, sizeof(data)); } TEST_F(WasmModuleVerifyTest, TwoDataSegments) { const byte kDataSegment0SourceOffset = 30; const byte kDataSegment1SourceOffset = 30 + 8; const byte data[] = { SECTION(MEMORY, 3), 28, 28, 1, SECTION(DATA_SEGMENTS, 23), 2, // segment count U32V_3(0x7ffee), // #0: dest addr U32V_1(4), // source size 1, 2, 3, 4, // data bytes U32V_3(0x6ddcc), // #1: dest addr U32V_1(10), // source size 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 // data bytes }; { ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); EXPECT_EQ(0, result.val->globals.size()); EXPECT_EQ(0, result.val->functions.size()); EXPECT_EQ(2, result.val->data_segments.size()); const WasmDataSegment* s0 = &result.val->data_segments[0]; const WasmDataSegment* s1 = &result.val->data_segments[1]; EXPECT_EQ(0x7ffee, s0->dest_addr); EXPECT_EQ(kDataSegment0SourceOffset, s0->source_offset); EXPECT_EQ(4, s0->source_size); EXPECT_TRUE(s0->init); EXPECT_EQ(0x6ddcc, s1->dest_addr); EXPECT_EQ(kDataSegment1SourceOffset, s1->source_offset); EXPECT_EQ(10, s1->source_size); EXPECT_TRUE(s1->init); if (result.val) delete result.val; } EXPECT_OFF_END_FAILURE(data, 13, sizeof(data)); } TEST_F(WasmModuleVerifyTest, DataSegmentWithInvalidDest) { const int source_size = 3; for (byte mem_pages = 1; mem_pages < 16; mem_pages++) { int mem_size = mem_pages * 0x10000; // 64k pages. for (int dest_addr = mem_size - source_size; dest_addr < mem_size + source_size; dest_addr++) { byte data[] = {SECTION(MEMORY, 3), mem_pages, mem_pages, 1, SECTION(DATA_SEGMENTS, 8), 1, U32V_3(dest_addr), U32V_1(source_size), 'a', 'b', 'c'}; if (dest_addr <= (mem_size - source_size)) { EXPECT_VERIFIES(data); } else { EXPECT_FAILURE(data); } } } } TEST_F(WasmModuleVerifyTest, OneIndirectFunction) { static const byte data[] = { // sig#0 ------------------------------------------------------- SIGNATURES_SECTION_VOID_VOID, // funcs ------------------------------------------------------ ONE_EMPTY_FUNCTION, // indirect table ---------------------------------------------- SECTION(FUNCTION_TABLE, 2), 1, U32V_1(0)}; ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); if (result.ok()) { EXPECT_EQ(1, result.val->signatures.size()); EXPECT_EQ(1, result.val->functions.size()); EXPECT_EQ(1, result.val->function_tables.size()); EXPECT_EQ(1, result.val->function_tables[0].values.size()); EXPECT_EQ(0, result.val->function_tables[0].values[0]); } if (result.val) delete result.val; } TEST_F(WasmModuleVerifyTest, MultipleIndirectFunctions) { static const byte data[] = { // sig#0 ------------------------------------------------------- SECTION(SIGNATURES, 1 + SIZEOF_SIG_ENTRY_v_v + SIZEOF_SIG_ENTRY_v_x), 2, // -- SIG_ENTRY_v_v, // void -> void SIG_ENTRY_v_x(kLocalI32), // void -> i32 // funcs ------------------------------------------------------ FOUR_EMPTY_FUNCTIONS, // indirect table ---------------------------------------------- SECTION(FUNCTION_TABLE, 9), 8, U32V_1(0), // -- U32V_1(1), // -- U32V_1(2), // -- U32V_1(3), // -- U32V_1(0), // -- U32V_1(1), // -- U32V_1(2), // -- U32V_1(3), // -- FOUR_EMPTY_BODIES}; ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); if (result.ok()) { EXPECT_EQ(2, result.val->signatures.size()); EXPECT_EQ(4, result.val->functions.size()); EXPECT_EQ(1, result.val->function_tables.size()); EXPECT_EQ(8, result.val->function_tables[0].values.size()); for (int i = 0; i < 8; i++) { EXPECT_EQ(i & 3, result.val->function_tables[0].values[i]); } } if (result.val) delete result.val; } TEST_F(WasmModuleVerifyTest, IndirectFunctionNoFunctions) { static const byte data[] = { // sig#0 ------------------------------------------------------- SIGNATURES_SECTION_VOID_VOID, // indirect table ---------------------------------------------- SECTION(FUNCTION_TABLE, 3), 1, 0, 0, }; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, IndirectFunctionInvalidIndex) { static const byte data[] = { // sig#0 ------------------------------------------------------- SIGNATURES_SECTION_VOID_VOID, // functions --------------------------------------------------- ONE_EMPTY_FUNCTION, // indirect table ---------------------------------------------- SECTION(FUNCTION_TABLE, 3), 1, 1, 0, }; EXPECT_FAILURE(data); } class WasmSignatureDecodeTest : public TestWithZone {}; TEST_F(WasmSignatureDecodeTest, Ok_v_v) { static const byte data[] = {SIG_ENTRY_v_v}; base::AccountingAllocator allocator; Zone zone(&allocator); FunctionSig* sig = DecodeWasmSignatureForTesting(&zone, data, data + arraysize(data)); EXPECT_TRUE(sig != nullptr); EXPECT_EQ(0, sig->parameter_count()); EXPECT_EQ(0, sig->return_count()); } TEST_F(WasmSignatureDecodeTest, Ok_t_v) { for (size_t i = 0; i < arraysize(kLocalTypes); i++) { LocalTypePair ret_type = kLocalTypes[i]; const byte data[] = {SIG_ENTRY_x(ret_type.code)}; FunctionSig* sig = DecodeWasmSignatureForTesting(zone(), data, data + arraysize(data)); EXPECT_TRUE(sig != nullptr); EXPECT_EQ(0, sig->parameter_count()); EXPECT_EQ(1, sig->return_count()); EXPECT_EQ(ret_type.type, sig->GetReturn()); } } TEST_F(WasmSignatureDecodeTest, Ok_v_t) { for (size_t i = 0; i < arraysize(kLocalTypes); i++) { LocalTypePair param_type = kLocalTypes[i]; const byte data[] = {SIG_ENTRY_v_x(param_type.code)}; FunctionSig* sig = DecodeWasmSignatureForTesting(zone(), data, data + arraysize(data)); EXPECT_TRUE(sig != nullptr); EXPECT_EQ(1, sig->parameter_count()); EXPECT_EQ(0, sig->return_count()); EXPECT_EQ(param_type.type, sig->GetParam(0)); } } TEST_F(WasmSignatureDecodeTest, Ok_t_t) { for (size_t i = 0; i < arraysize(kLocalTypes); i++) { LocalTypePair ret_type = kLocalTypes[i]; for (size_t j = 0; j < arraysize(kLocalTypes); j++) { LocalTypePair param_type = kLocalTypes[j]; const byte data[] = {SIG_ENTRY_x_x(ret_type.code, param_type.code)}; FunctionSig* sig = DecodeWasmSignatureForTesting(zone(), data, data + arraysize(data)); EXPECT_TRUE(sig != nullptr); EXPECT_EQ(1, sig->parameter_count()); EXPECT_EQ(1, sig->return_count()); EXPECT_EQ(param_type.type, sig->GetParam(0)); EXPECT_EQ(ret_type.type, sig->GetReturn()); } } } TEST_F(WasmSignatureDecodeTest, Ok_i_tt) { for (size_t i = 0; i < arraysize(kLocalTypes); i++) { LocalTypePair p0_type = kLocalTypes[i]; for (size_t j = 0; j < arraysize(kLocalTypes); j++) { LocalTypePair p1_type = kLocalTypes[j]; const byte data[] = { SIG_ENTRY_x_xx(kLocalI32, p0_type.code, p1_type.code)}; FunctionSig* sig = DecodeWasmSignatureForTesting(zone(), data, data + arraysize(data)); EXPECT_TRUE(sig != nullptr); EXPECT_EQ(2, sig->parameter_count()); EXPECT_EQ(1, sig->return_count()); EXPECT_EQ(p0_type.type, sig->GetParam(0)); EXPECT_EQ(p1_type.type, sig->GetParam(1)); } } } TEST_F(WasmSignatureDecodeTest, Fail_off_end) { byte data[256]; for (int p = 0; p <= 255; p = p + 1 + p * 3) { for (int i = 0; i <= p; i++) data[i] = kLocalI32; data[0] = static_cast(p); for (int i = 0; i < p + 1; i++) { // Should fall off the end for all signatures. FunctionSig* sig = DecodeWasmSignatureForTesting(zone(), data, data + i); EXPECT_EQ(nullptr, sig); } } } TEST_F(WasmSignatureDecodeTest, Fail_invalid_type) { byte kInvalidType = 76; for (size_t i = 0; i < SIZEOF_SIG_ENTRY_x_xx; i++) { byte data[] = {SIG_ENTRY_x_xx(kLocalI32, kLocalI32, kLocalI32)}; data[i] = kInvalidType; FunctionSig* sig = DecodeWasmSignatureForTesting(zone(), data, data + arraysize(data)); EXPECT_EQ(nullptr, sig); } } TEST_F(WasmSignatureDecodeTest, Fail_invalid_ret_type1) { static const byte data[] = {SIG_ENTRY_x_x(kLocalVoid, kLocalI32)}; FunctionSig* sig = DecodeWasmSignatureForTesting(zone(), data, data + arraysize(data)); EXPECT_EQ(nullptr, sig); } TEST_F(WasmSignatureDecodeTest, Fail_invalid_param_type1) { static const byte data[] = {SIG_ENTRY_x_x(kLocalI32, kLocalVoid)}; FunctionSig* sig = DecodeWasmSignatureForTesting(zone(), data, data + arraysize(data)); EXPECT_EQ(nullptr, sig); } TEST_F(WasmSignatureDecodeTest, Fail_invalid_param_type2) { static const byte data[] = {SIG_ENTRY_x_xx(kLocalI32, kLocalI32, kLocalVoid)}; FunctionSig* sig = DecodeWasmSignatureForTesting(zone(), data, data + arraysize(data)); EXPECT_EQ(nullptr, sig); } class WasmFunctionVerifyTest : public TestWithIsolateAndZone {}; TEST_F(WasmFunctionVerifyTest, Ok_v_v_empty) { static const byte data[] = { SIG_ENTRY_v_v, // signature entry 4, // locals 3, kLocalI32, // -- 4, kLocalI64, // -- 5, kLocalF32, // -- 6, kLocalF64, // -- kExprNop // body }; FunctionResult result = DecodeWasmFunction(isolate(), zone(), nullptr, data, data + arraysize(data)); EXPECT_OK(result); if (result.val && result.ok()) { WasmFunction* function = result.val; EXPECT_EQ(0, function->sig->parameter_count()); EXPECT_EQ(0, function->sig->return_count()); EXPECT_EQ(0, function->name_offset); EXPECT_EQ(SIZEOF_SIG_ENTRY_v_v, function->code_start_offset); EXPECT_EQ(arraysize(data), function->code_end_offset); // TODO(titzer): verify encoding of local declarations } if (result.val) delete result.val; } TEST_F(WasmModuleVerifyTest, SectionWithoutNameLength) { const byte data[] = {1}; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, TheLoneliestOfValidModulesTheTrulyEmptyOne) { const byte data[] = { 0, // Empty section name. // No section name, no content, nothing but sadness. 0, // No section content. }; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, OnlyUnknownSectionEmpty) { const byte data[] = { UNKNOWN_SECTION_NAME, 0, }; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, OnlyUnknownSectionNonEmpty) { const byte data[] = { UNKNOWN_SECTION_NAME, 5, // section size 0xff, 0xff, 0xff, 0xff, 0xff, // section data }; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, SignatureFollowedByEmptyUnknownSection) { const byte data[] = { // signatures SIGNATURES_SECTION_VOID_VOID, // ----------------------------------------------------------- UNKNOWN_SECTION_NAME, 0 // empty section }; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, SignatureFollowedByUnknownSection) { const byte data[] = { // signatures SIGNATURES_SECTION_VOID_VOID, // ----------------------------------------------------------- UNKNOWN_SECTION_NAME, 5, // section size 0xff, 0xff, 0xff, 0xff, 0xff, }; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, SignatureFollowedByUnknownSectionWithLongLEB) { const byte data[] = { // signatures SIGNATURES_SECTION_VOID_VOID, // ----------------------------------------------------------- UNKNOWN_SECTION_NAME, 0x81, 0x80, 0x80, 0x80, 0x00, // section size: 1 but in a 5-byte LEB 0, }; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, UnknownSectionOverflow) { static const byte data[] = { UNKNOWN_EMPTY_SECTION_NAME, 9, // section size 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, // 10 byte section }; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, UnknownSectionUnderflow) { static const byte data[] = { UNKNOWN_EMPTY_SECTION_NAME, 0xff, 0xff, 0xff, 0xff, 0x0f, // Section size LEB128 0xffffffff 1, 2, 3, 4, // 4 byte section }; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, UnknownSectionLoop) { // Would infinite loop decoding if wrapping and allowed. static const byte data[] = { UNKNOWN_EMPTY_SECTION_NAME, 1, 2, 3, 4, // 4 byte section 0xfa, 0xff, 0xff, 0xff, 0x0f, // Section size LEB128 0xfffffffa }; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, UnknownSectionSkipped) { static const byte data[] = { UNKNOWN_EMPTY_SECTION_NAME, 1, // section size 0, // one byte section SECTION(GLOBALS, 4), 1, 0, // name length kLocalI32, // memory type 0, // exported }; ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); EXPECT_EQ(1, result.val->globals.size()); EXPECT_EQ(0, result.val->functions.size()); EXPECT_EQ(0, result.val->data_segments.size()); const WasmGlobal* global = &result.val->globals.back(); EXPECT_EQ(0, global->name_length); EXPECT_EQ(kAstI32, global->type); EXPECT_EQ(0, global->offset); EXPECT_FALSE(global->exported); if (result.val) delete result.val; } TEST_F(WasmModuleVerifyTest, ImportTable_empty) { static const byte data[] = {SECTION(SIGNATURES, 1), 0, SECTION(IMPORT_TABLE, 1), 0}; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, ImportTable_nosigs1) { static const byte data[] = {SECTION(IMPORT_TABLE, 1), 0}; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, ImportTable_nosigs2) { static const byte data[] = { SECTION(IMPORT_TABLE, 6), 1, // sig table IMPORT_SIG_INDEX(0), // sig index NAME_LENGTH(1), 'm', // module name NAME_LENGTH(1), 'f', // function name }; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, ImportTable_invalid_sig) { static const byte data[] = { SECTION(SIGNATURES, 1), 0, // -- SECTION(IMPORT_TABLE, 6), 1, // -- IMPORT_SIG_INDEX(0), // sig index NAME_LENGTH(1), 'm', // module name NAME_LENGTH(1), 'f', // function name }; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, ImportTable_one_sig) { static const byte data[] = { // signatures SIGNATURES_SECTION_VOID_VOID, SECTION(IMPORT_TABLE, 6), 1, // -- IMPORT_SIG_INDEX(0), // sig index NAME_LENGTH(1), 'm', // module name NAME_LENGTH(1), 'f', // function name }; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, ImportTable_invalid_module) { static const byte data[] = { // signatures SIGNATURES_SECTION_VOID_VOID, SECTION(IMPORT_TABLE, 6), 1, // -- IMPORT_SIG_INDEX(0), // sig index NO_NAME, // module name NAME_LENGTH(1), 'f' // function name }; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, ImportTable_off_end) { static const byte data[] = { // signatures SIGNATURES_SECTION_VOID_VOID, SECTION(IMPORT_TABLE, 6), 1, IMPORT_SIG_INDEX(0), // sig index NAME_LENGTH(1), 'm', // module name NAME_LENGTH(1), 'f', // function name }; EXPECT_OFF_END_FAILURE(data, 16, sizeof(data)); } TEST_F(WasmModuleVerifyTest, ExportTable_empty1) { static const byte data[] = {// signatures SIGNATURES_SECTION_VOID_VOID, ONE_EMPTY_FUNCTION, SECTION(EXPORT_TABLE, 1), 0, // -- ONE_EMPTY_BODY}; ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); EXPECT_EQ(1, result.val->functions.size()); EXPECT_EQ(0, result.val->export_table.size()); if (result.val) delete result.val; } TEST_F(WasmModuleVerifyTest, ExportTable_empty2) { static const byte data[] = { SECTION(SIGNATURES, 1), 0, SECTION(EXPORT_TABLE, 1), 0 // -- }; // TODO(titzer): current behavior treats empty functions section as missing. EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, ExportTable_NoFunctions1) { static const byte data[] = { SECTION(SIGNATURES, 1), 0, SECTION(EXPORT_TABLE, 1), 0 // -- }; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, ExportTable_NoFunctions2) { static const byte data[] = {SECTION(EXPORT_TABLE, 1), 0}; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, ExportTableOne) { static const byte data[] = {// signatures SIGNATURES_SECTION_VOID_VOID, ONE_EMPTY_FUNCTION, SECTION(EXPORT_TABLE, 3), 1, // exports FUNC_INDEX(0), // -- NO_NAME, // -- ONE_EMPTY_BODY}; ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); EXPECT_EQ(1, result.val->functions.size()); EXPECT_EQ(1, result.val->export_table.size()); if (result.val) delete result.val; } TEST_F(WasmModuleVerifyTest, ExportTableTwo) { static const byte data[] = {// signatures SIGNATURES_SECTION_VOID_VOID, ONE_EMPTY_FUNCTION, SECTION(EXPORT_TABLE, 12), 2, // exports FUNC_INDEX(0), // -- NAME_LENGTH(4), 'n', 'a', 'm', 'e', // -- FUNC_INDEX(0), // -- NAME_LENGTH(3), 'n', 'o', 'm', // -- ONE_EMPTY_BODY}; ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); EXPECT_EQ(1, result.val->functions.size()); EXPECT_EQ(2, result.val->export_table.size()); if (result.val) delete result.val; } TEST_F(WasmModuleVerifyTest, ExportTableThree) { static const byte data[] = {// signatures SIGNATURES_SECTION_VOID_VOID, THREE_EMPTY_FUNCTIONS, SECTION(EXPORT_TABLE, 10), 3, // exports FUNC_INDEX(0), // -- NAME_LENGTH(1), 'a', // -- FUNC_INDEX(1), // -- NAME_LENGTH(1), 'b', // -- FUNC_INDEX(2), // -- NAME_LENGTH(1), 'c', // -- THREE_EMPTY_BODIES}; ModuleResult result = DecodeModule(data, data + arraysize(data)); EXPECT_OK(result); EXPECT_EQ(3, result.val->functions.size()); EXPECT_EQ(3, result.val->export_table.size()); if (result.val) delete result.val; } TEST_F(WasmModuleVerifyTest, ExportTableThreeOne) { for (int i = 0; i < 6; i++) { const byte data[] = {// signatures SIGNATURES_SECTION_VOID_VOID, THREE_EMPTY_FUNCTIONS, SECTION(EXPORT_TABLE, 5), 1, // exports FUNC_INDEX(i), // -- NAME_LENGTH(2), 'e', 'x', // -- THREE_EMPTY_BODIES}; if (i < 3) { EXPECT_VERIFIES(data); } else { EXPECT_FAILURE(data); } } } TEST_F(WasmModuleVerifyTest, ExportTableOne_off_end) { static const byte data[] = { // signatures SIGNATURES_SECTION_VOID_VOID, ONE_EMPTY_FUNCTION, SECTION(EXPORT_TABLE, 1 + 6), 1, // exports FUNC_INDEX(0), // -- NO_NAME // -- }; for (int length = 33; length < sizeof(data); length++) { ModuleResult result = DecodeModule(data, data + length); EXPECT_FALSE(result.ok()); if (result.val) delete result.val; } } TEST_F(WasmModuleVerifyTest, FunctionSignatures_empty) { static const byte data[] = { SECTION(SIGNATURES, 1), 0, // -- SECTION(FUNCTION_SIGNATURES, 1), 0 // -- }; // -- EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, FunctionSignatures_one) { static const byte data[] = { SIGNATURES_SECTION(1, SIG_ENTRY_v_v), // -- FUNCTION_SIGNATURES_SECTION(1, 0) // -- }; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, FunctionBodies_empty) { static const byte data[] = { EMPTY_SIGNATURES_SECTION, // -- EMPTY_FUNCTION_SIGNATURES_SECTION, // -- EMPTY_FUNCTION_BODIES_SECTION // -- }; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, FunctionBodies_one_empty) { static const byte data[] = { SIGNATURES_SECTION(1, SIG_ENTRY_v_v), // -- FUNCTION_SIGNATURES_SECTION(1, 0), // -- SECTION(FUNCTION_BODIES, 1 + SIZEOF_EMPTY_BODY), 1, EMPTY_BODY // -- }; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, FunctionBodies_one_nop) { static const byte data[] = { SIGNATURES_SECTION(1, SIG_ENTRY_v_v), // -- FUNCTION_SIGNATURES_SECTION(1, 0), // -- SECTION(FUNCTION_BODIES, 1 + SIZEOF_NOP_BODY), 1, NOP_BODY // -- }; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, FunctionBodies_count_mismatch1) { static const byte data[] = { SIGNATURES_SECTION(1, SIG_ENTRY_v_v), // -- FUNCTION_SIGNATURES_SECTION(2, 0, 0), // -- SECTION(FUNCTION_BODIES, 1 + SIZEOF_EMPTY_BODY), 1, // -- EMPTY_BODY // -- }; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, FunctionBodies_count_mismatch2) { static const byte data[] = { SIGNATURES_SECTION(1, SIG_ENTRY_v_v), // -- FUNCTION_SIGNATURES_SECTION(1, 0), // -- SECTION(FUNCTION_BODIES, 1 + 2 * SIZEOF_NOP_BODY), // -- 2, // -- NOP_BODY, // -- NOP_BODY // -- }; EXPECT_FAILURE(data); } TEST_F(WasmModuleVerifyTest, Names_empty) { static const byte data[] = { EMPTY_SIGNATURES_SECTION, EMPTY_FUNCTION_SIGNATURES_SECTION, EMPTY_FUNCTION_BODIES_SECTION, EMPTY_NAMES_SECTION}; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, Names_one_empty) { static const byte data[] = { SIGNATURES_SECTION(1, SIG_ENTRY_v_v), // -- FUNCTION_SIGNATURES_SECTION(1, 0), // -- SECTION(FUNCTION_BODIES, 1 + SIZEOF_EMPTY_BODY), 1, EMPTY_BODY, // -- SECTION(NAMES, 1 + 5), 1, FOO_STRING, NO_LOCAL_NAMES // -- }; EXPECT_VERIFIES(data); } TEST_F(WasmModuleVerifyTest, Names_two_empty) { static const byte data[] = { SIGNATURES_SECTION(1, SIG_ENTRY_v_v), // -- FUNCTION_SIGNATURES_SECTION(2, 0, 0), // -- SECTION(FUNCTION_BODIES, 1 + 2 * SIZEOF_EMPTY_BODY), // -- 2, EMPTY_BODY, EMPTY_BODY, // -- SECTION(NAMES, 1 + 10), 2, // -- FOO_STRING, NO_LOCAL_NAMES, // -- FOO_STRING, NO_LOCAL_NAMES, // -- }; EXPECT_VERIFIES(data); } } // namespace wasm } // namespace internal } // namespace v8