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v8/test/unittests/wasm/module-decoder-unittest.cc
titzer d48feaccf2 [wasm] Verify boundaries of data segments when decoding modules. 
R=ahaas@chromium.org,bradnelson@chromium.org
LOG=Y
BUG=chromium:575167

Review URL: https://codereview.chromium.org/1608743006

Cr-Commit-Position: refs/heads/master@{#33411}
2016-01-20 15:20:20 +00:00

1014 lines
30 KiB
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// 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/wasm/module-decoder.h"
#include "src/wasm/wasm-opcodes.h"
namespace v8 {
namespace internal {
namespace wasm {
class WasmModuleVerifyTest : public TestWithZone {
public:
ModuleResult DecodeModule(const byte* module_start, const byte* module_end) {
return DecodeWasmModule(nullptr, zone(), module_start, module_end, false,
false);
}
};
#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(data) \
do { \
ModuleResult result = DecodeModule(data, data + arraysize(data)); \
EXPECT_FALSE(result.ok()); \
if (result.val) delete result.val; \
} while (false)
struct LocalTypePair {
uint8_t code;
LocalType type;
} kLocalTypes[] = {{kLocalI32, kAstI32},
{kLocalI64, kAstI64},
{kLocalF32, kAstF32},
{kLocalF64, kAstF64}};
// TODO(titzer): use these macros everywhere below.
#define U32_LE(v) \
static_cast<byte>(v), static_cast<byte>((v) >> 8), \
static_cast<byte>((v) >> 16), static_cast<byte>((v) >> 24)
#define U16_LE(v) static_cast<byte>(v), static_cast<byte>((v) >> 8)
TEST_F(WasmModuleVerifyTest, DecodeEmpty) {
static const byte data[1]{kDeclEnd};
{
ModuleResult result = DecodeModule(data, data);
EXPECT_TRUE(result.ok());
if (result.val) delete result.val;
}
{
ModuleResult result = DecodeModule(data, data + 1);
EXPECT_TRUE(result.ok());
if (result.val) delete result.val;
}
}
TEST_F(WasmModuleVerifyTest, OneGlobal) {
const byte data[] = {
kDeclGlobals,
1,
0,
0,
0,
0, // name offset
kMemI32, // memory type
0, // exported
};
{
// Should decode to exactly one global.
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
EXPECT_EQ(1, result.val->globals->size());
EXPECT_EQ(0, result.val->functions->size());
EXPECT_EQ(0, result.val->data_segments->size());
WasmGlobal* global = &result.val->globals->back();
EXPECT_EQ(0, global->name_offset);
EXPECT_EQ(MachineType::Int32(), global->type);
EXPECT_EQ(0, global->offset);
EXPECT_FALSE(global->exported);
if (result.val) delete result.val;
}
for (size_t size = 1; size < arraysize(data); size++) {
// Should fall off end of module bytes.
ModuleResult result = DecodeModule(data, data + size);
EXPECT_FALSE(result.ok());
if (result.val) delete result.val;
}
}
TEST_F(WasmModuleVerifyTest, ZeroGlobals) {
const byte data[] = {
kDeclGlobals, 0, // declare 0 globals
};
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
if (result.val) delete result.val;
}
static void AppendUint32v(std::vector<byte>& buffer, uint32_t val) {
while (true) {
uint32_t next = val >> 7;
uint32_t out = val & 0x7f;
if (next) {
buffer.push_back(static_cast<byte>(0x80 | out));
val = next;
} else {
buffer.push_back(static_cast<byte>(out));
break;
}
}
}
TEST_F(WasmModuleVerifyTest, NGlobals) {
const byte data[] = {
0, 0, 0, 0, // name offset
kMemI32, // memory type
0, // exported
};
for (uint32_t i = 0; i < 1000000; i = i * 7 + 1) {
std::vector<byte> buffer;
buffer.push_back(kDeclGlobals);
AppendUint32v(buffer, i);
for (uint32_t j = 0; j < i; j++) {
buffer.insert(buffer.end(), data, data + arraysize(data));
}
ModuleResult result = DecodeModule(&buffer[0], &buffer[0] + buffer.size());
EXPECT_TRUE(result.ok());
if (result.val) delete result.val;
}
}
TEST_F(WasmModuleVerifyTest, GlobalWithInvalidNameOffset) {
const byte data[] = {
kDeclGlobals,
1, // declare one global
0,
3,
0,
0, // name offset
kMemI32, // memory type
0, // exported
};
EXPECT_FAILURE(data);
}
TEST_F(WasmModuleVerifyTest, GlobalWithInvalidMemoryType) {
const byte data[] = {
kDeclGlobals,
1, // declare one global
0,
0,
0,
0, // name offset
33, // memory type
0, // exported
};
EXPECT_FAILURE(data);
}
TEST_F(WasmModuleVerifyTest, TwoGlobals) {
const byte data[] = {
kDeclGlobals,
2,
0,
0,
0,
0, // #0: name offset
kMemF32, // memory type
0, // exported
0,
0,
0,
0, // #1: name offset
kMemF64, // memory type
1, // exported
};
{
// Should decode to exactly two globals.
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
EXPECT_EQ(2, result.val->globals->size());
EXPECT_EQ(0, result.val->functions->size());
EXPECT_EQ(0, result.val->data_segments->size());
WasmGlobal* g0 = &result.val->globals->at(0);
WasmGlobal* g1 = &result.val->globals->at(1);
EXPECT_EQ(0, g0->name_offset);
EXPECT_EQ(MachineType::Float32(), g0->type);
EXPECT_EQ(0, g0->offset);
EXPECT_FALSE(g0->exported);
EXPECT_EQ(0, g1->name_offset);
EXPECT_EQ(MachineType::Float64(), g1->type);
EXPECT_EQ(0, g1->offset);
EXPECT_TRUE(g1->exported);
if (result.val) delete result.val;
}
for (size_t size = 1; size < arraysize(data); size++) {
// Should fall off end of module bytes.
ModuleResult result = DecodeModule(data, data + size);
EXPECT_FALSE(result.ok());
if (result.val) delete result.val;
}
}
TEST_F(WasmModuleVerifyTest, OneSignature) {
static const byte data[] = {
kDeclSignatures, 1, 0, kLocalVoid // void -> void
};
EXPECT_VERIFIES(data);
}
TEST_F(WasmModuleVerifyTest, MultipleSignatures) {
static const byte data[] = {
kDeclSignatures,
3,
0,
kLocalVoid, // void -> void
1,
kLocalI32,
kLocalF32, // f32 -> i32
2,
kLocalI32,
kLocalF64,
kLocalF64, // (f64,f64) -> i32
};
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
EXPECT_EQ(3, result.val->signatures->size());
if (result.val->signatures->size() == 3) {
EXPECT_EQ(0, result.val->signatures->at(0)->return_count());
EXPECT_EQ(1, result.val->signatures->at(1)->return_count());
EXPECT_EQ(1, result.val->signatures->at(2)->return_count());
EXPECT_EQ(0, result.val->signatures->at(0)->parameter_count());
EXPECT_EQ(1, result.val->signatures->at(1)->parameter_count());
EXPECT_EQ(2, result.val->signatures->at(2)->parameter_count());
}
if (result.val) delete result.val;
for (size_t size = 1; size < arraysize(data); size++) {
ModuleResult result = DecodeModule(data, data + size);
// Should fall off the end of module bytes.
EXPECT_FALSE(result.ok());
if (result.val) delete result.val;
}
}
TEST_F(WasmModuleVerifyTest, FunctionWithoutSig) {
static const byte data[] = {
kDeclFunctions, 1,
// func#0 ------------------------------------------------------
0, 0, // signature index
0, 0, 0, 0, // name offset
0, 0, 0, 0, // code start offset
0, 0, 0, 0, // code end offset
1, 2, // local int32 count
3, 4, // local int64 count
5, 6, // local float32 count
7, 8, // local float64 count
0, // exported
1 // external
};
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_FALSE(result.ok());
if (result.val) delete result.val;
}
TEST_F(WasmModuleVerifyTest, OneEmptyVoidVoidFunction) {
const int kCodeStartOffset = 23;
const int kCodeEndOffset = kCodeStartOffset + 1;
static const byte data[] = {
kDeclSignatures, 1,
// sig#0 -------------------------------------------------------
0, 0, // void -> void
// func#0 ------------------------------------------------------
kDeclFunctions, 1,
kDeclFunctionLocals | kDeclFunctionExport | kDeclFunctionName, 0,
0, // signature index
9, 0, 0, 0, // name offset
11, 2, // local int32 count
13, 4, // local int64 count
15, 6, // local float32 count
17, 8, // local float64 count
1, 0, // size
kExprNop,
};
{
// Should decode to exactly one function.
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
EXPECT_EQ(0, result.val->globals->size());
EXPECT_EQ(1, result.val->signatures->size());
EXPECT_EQ(1, result.val->functions->size());
EXPECT_EQ(0, result.val->data_segments->size());
EXPECT_EQ(0, result.val->function_table->size());
WasmFunction* function = &result.val->functions->back();
EXPECT_EQ(9, function->name_offset);
EXPECT_EQ(kCodeStartOffset, function->code_start_offset);
EXPECT_EQ(kCodeEndOffset, function->code_end_offset);
EXPECT_EQ(523, function->local_int32_count);
EXPECT_EQ(1037, function->local_int64_count);
EXPECT_EQ(1551, function->local_float32_count);
EXPECT_EQ(2065, function->local_float64_count);
EXPECT_TRUE(function->exported);
EXPECT_FALSE(function->external);
if (result.val) delete result.val;
}
for (size_t size = 5; size < arraysize(data); size++) {
// Should fall off end of module bytes.
ModuleResult result = DecodeModule(data, data + size);
EXPECT_FALSE(result.ok());
if (result.val) delete result.val;
}
}
TEST_F(WasmModuleVerifyTest, OneFunctionImported) {
static const byte data[] = {
kDeclSignatures, 1,
// sig#0 -------------------------------------------------------
0, 0, // void -> void
kDeclFunctions, 1,
// func#0 ------------------------------------------------------
kDeclFunctionImport, // no name, no locals, imported
0, 0, // signature index
};
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
EXPECT_EQ(1, result.val->functions->size());
WasmFunction* function = &result.val->functions->back();
EXPECT_EQ(0, function->name_offset);
EXPECT_EQ(0, function->code_start_offset);
EXPECT_EQ(0, function->code_end_offset);
EXPECT_EQ(0, function->local_int32_count);
EXPECT_EQ(0, function->local_int64_count);
EXPECT_EQ(0, function->local_float32_count);
EXPECT_EQ(0, function->local_float64_count);
EXPECT_FALSE(function->exported);
EXPECT_TRUE(function->external);
if (result.val) delete result.val;
}
TEST_F(WasmModuleVerifyTest, OneFunctionWithNopBody) {
static const byte kCodeStartOffset = 11;
static const byte kCodeEndOffset = kCodeStartOffset + 1;
static const byte data[] = {
kDeclSignatures, 1,
// sig#0 -------------------------------------------------------
0, 0, // void -> void
kDeclFunctions, 1,
// func#0 ------------------------------------------------------
0, // no name, no locals
0, 0, // signature index
1, 0, // body size
kExprNop // body
};
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
EXPECT_EQ(1, result.val->functions->size());
WasmFunction* function = &result.val->functions->back();
EXPECT_EQ(0, function->name_offset);
EXPECT_EQ(kCodeStartOffset, function->code_start_offset);
EXPECT_EQ(kCodeEndOffset, function->code_end_offset);
EXPECT_EQ(0, function->local_int32_count);
EXPECT_EQ(0, function->local_int64_count);
EXPECT_EQ(0, function->local_float32_count);
EXPECT_EQ(0, function->local_float64_count);
EXPECT_FALSE(function->exported);
EXPECT_FALSE(function->external);
if (result.val) delete result.val;
}
TEST_F(WasmModuleVerifyTest, OneFunctionWithNopBody_WithLocals) {
static const byte kCodeStartOffset = 19;
static const byte kCodeEndOffset = kCodeStartOffset + 1;
static const byte data[] = {
kDeclSignatures, 1,
// sig#0 -------------------------------------------------------
0, 0, // void -> void
kDeclFunctions, 1,
// func#0 ------------------------------------------------------
kDeclFunctionLocals, 0, 0, // signature index
1, 2, // local int32 count
3, 4, // local int64 count
5, 6, // local float32 count
7, 8, // local float64 count
1, 0, // body size
kExprNop // body
};
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
EXPECT_EQ(1, result.val->functions->size());
WasmFunction* function = &result.val->functions->back();
EXPECT_EQ(0, function->name_offset);
EXPECT_EQ(kCodeStartOffset, function->code_start_offset);
EXPECT_EQ(kCodeEndOffset, function->code_end_offset);
EXPECT_EQ(513, function->local_int32_count);
EXPECT_EQ(1027, function->local_int64_count);
EXPECT_EQ(1541, function->local_float32_count);
EXPECT_EQ(2055, function->local_float64_count);
EXPECT_FALSE(function->exported);
EXPECT_FALSE(function->external);
if (result.val) delete result.val;
}
TEST_F(WasmModuleVerifyTest, OneGlobalOneFunctionWithNopBodyOneDataSegment) {
static const byte kDeclMemorySize = 4;
static const byte kCodeStartOffset =
2 + kDeclMemorySize + kDeclGlobalSize + 4 + 2 + 17;
static const byte kCodeEndOffset = kCodeStartOffset + 3;
static const byte data[] = {
kDeclMemory, 28, 28, 1,
// global#0 --------------------------------------------------
kDeclGlobals, 1, 0, 0, 0, 0, // name offset
kMemU8, // memory type
0, // exported
// sig#0 -----------------------------------------------------
kDeclSignatures, 1, 0, 0, // void -> void
// func#0 ----------------------------------------------------
kDeclFunctions, 1, kDeclFunctionLocals | kDeclFunctionName, 0,
0, // signature index
9, 0, 0, 0, // name offset
1, 2, // local int32 count
3, 4, // local int64 count
5, 6, // local float32 count
7, 8, // local float64 count
3, 0, // body size
kExprNop, // func#0 body
kExprNop, // func#0 body
kExprNop, // func#0 body
// segment#0 -------------------------------------------------
kDeclDataSegments, 1, 0xae, 0xb3, 0x08, 0, // dest addr
15, 0, 0, 0, // source offset
5, 0, 0, 0, // source size
1, // init
// rest ------------------------------------------------------
kDeclEnd,
};
{
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
EXPECT_EQ(1, result.val->globals->size());
EXPECT_EQ(1, result.val->functions->size());
EXPECT_EQ(1, result.val->data_segments->size());
WasmGlobal* global = &result.val->globals->back();
EXPECT_EQ(0, global->name_offset);
EXPECT_EQ(MachineType::Uint8(), global->type);
EXPECT_EQ(0, global->offset);
EXPECT_FALSE(global->exported);
WasmFunction* function = &result.val->functions->back();
EXPECT_EQ(9, function->name_offset);
EXPECT_EQ(kCodeStartOffset, function->code_start_offset);
EXPECT_EQ(kCodeEndOffset, function->code_end_offset);
EXPECT_FALSE(function->exported);
EXPECT_FALSE(function->external);
WasmDataSegment* segment = &result.val->data_segments->back();
EXPECT_EQ(0x8b3ae, segment->dest_addr);
EXPECT_EQ(15, segment->source_offset);
EXPECT_EQ(5, segment->source_size);
EXPECT_TRUE(segment->init);
if (result.val) delete result.val;
}
}
TEST_F(WasmModuleVerifyTest, OneDataSegment) {
const byte data[] = {
kDeclMemory, 28, 28, 1, kDeclDataSegments, 1, 0xaa, 0xbb, 0x09,
0, // dest addr
11, 0, 0,
0, // source offset
3, 0, 0,
0, // source size
1, // init
};
{
EXPECT_VERIFIES(data);
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
EXPECT_EQ(0, result.val->globals->size());
EXPECT_EQ(0, result.val->functions->size());
EXPECT_EQ(1, result.val->data_segments->size());
WasmDataSegment* segment = &result.val->data_segments->back();
EXPECT_EQ(0x9bbaa, segment->dest_addr);
EXPECT_EQ(11, segment->source_offset);
EXPECT_EQ(3, segment->source_size);
EXPECT_TRUE(segment->init);
if (result.val) delete result.val;
}
for (size_t size = 5; size < arraysize(data); size++) {
// Should fall off end of module bytes.
ModuleResult result = DecodeModule(data, data + size);
EXPECT_FALSE(result.ok());
if (result.val) delete result.val;
}
}
TEST_F(WasmModuleVerifyTest, TwoDataSegments) {
const byte data[] = {
kDeclMemory, 28, 28, 1, kDeclDataSegments, 2, 0xee, 0xff, 0x07,
0, // dest addr
9, 0, 0,
0, // #0: source offset
4, 0, 0,
0, // source size
0, // init
0xcc, 0xdd, 0x06,
0, // #1: dest addr
6, 0, 0,
0, // source offset
10, 0, 0,
0, // source size
1, // init
};
{
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
EXPECT_EQ(0, result.val->globals->size());
EXPECT_EQ(0, result.val->functions->size());
EXPECT_EQ(2, result.val->data_segments->size());
WasmDataSegment* s0 = &result.val->data_segments->at(0);
WasmDataSegment* s1 = &result.val->data_segments->at(1);
EXPECT_EQ(0x7ffee, s0->dest_addr);
EXPECT_EQ(9, s0->source_offset);
EXPECT_EQ(4, s0->source_size);
EXPECT_FALSE(s0->init);
EXPECT_EQ(0x6ddcc, s1->dest_addr);
EXPECT_EQ(6, s1->source_offset);
EXPECT_EQ(10, s1->source_size);
EXPECT_TRUE(s1->init);
if (result.val) delete result.val;
}
for (size_t size = 5; size < arraysize(data); size++) {
// Should fall off end of module bytes.
ModuleResult result = DecodeModule(data, data + size);
EXPECT_FALSE(result.ok());
if (result.val) delete result.val;
}
}
TEST_F(WasmModuleVerifyTest, DataSegmentWithInvalidSource) {
const int dest_addr = 0x100;
const byte mem_size_log2 = 15;
const int kDataSize = 19;
for (int source_offset = 0; source_offset < 5 + kDataSize; source_offset++) {
for (int source_size = -1; source_size < 5 + kDataSize; source_size += 3) {
byte data[] = {
kDeclMemory,
mem_size_log2,
mem_size_log2,
1,
kDeclDataSegments,
1,
U32_LE(dest_addr),
U32_LE(source_offset),
U32_LE(source_size),
1, // init
};
STATIC_ASSERT(kDataSize == arraysize(data));
if (source_offset < kDataSize && source_size >= 0 &&
(source_offset + source_size) <= kDataSize) {
EXPECT_VERIFIES(data);
} else {
EXPECT_FAILURE(data);
}
}
}
}
TEST_F(WasmModuleVerifyTest, DataSegmentWithInvalidDest) {
const int source_size = 3;
const int source_offset = 11;
for (byte mem_size_log2 = 12; mem_size_log2 < 20; mem_size_log2++) {
int mem_size = 1 << mem_size_log2;
for (int dest_addr = mem_size - source_size;
dest_addr < mem_size + source_size; dest_addr++) {
byte data[] = {
kDeclMemory,
mem_size_log2,
mem_size_log2,
1,
kDeclDataSegments,
1,
U32_LE(dest_addr),
U32_LE(source_offset),
U32_LE(source_size),
1, // init
};
if (dest_addr <= (mem_size - source_size)) {
EXPECT_VERIFIES(data);
} else {
EXPECT_FAILURE(data);
}
}
}
}
// To make below tests for indirect calls much shorter.
#define FUNCTION(sig_index, external) \
kDeclFunctionImport, static_cast<byte>(sig_index), \
static_cast<byte>(sig_index >> 8)
TEST_F(WasmModuleVerifyTest, OneIndirectFunction) {
static const byte data[] = {
// sig#0 -------------------------------------------------------
kDeclSignatures, 1, 0, 0, // void -> void
// func#0 ------------------------------------------------------
kDeclFunctions, 1, FUNCTION(0, 0),
// indirect table ----------------------------------------------
kDeclFunctionTable, 1, 0, 0};
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
if (result.ok()) {
EXPECT_EQ(1, result.val->signatures->size());
EXPECT_EQ(1, result.val->functions->size());
EXPECT_EQ(1, result.val->function_table->size());
EXPECT_EQ(0, result.val->function_table->at(0));
}
if (result.val) delete result.val;
}
TEST_F(WasmModuleVerifyTest, MultipleIndirectFunctions) {
static const byte data[] = {
// sig#0 -------------------------------------------------------
kDeclSignatures, 2, 0, 0, // void -> void
0, kLocalI32, // void -> i32
// func#0 ------------------------------------------------------
kDeclFunctions, 4, FUNCTION(0, 1), FUNCTION(1, 1), FUNCTION(0, 1),
FUNCTION(1, 1),
// indirect table ----------------------------------------------
kDeclFunctionTable, 8, 0, 0, 1, 0, 2, 0, 3, 0, 0, 0, 1, 0, 2, 0, 3, 0,
};
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
if (result.ok()) {
EXPECT_EQ(2, result.val->signatures->size());
EXPECT_EQ(4, result.val->functions->size());
EXPECT_EQ(8, result.val->function_table->size());
for (int i = 0; i < 8; i++) {
EXPECT_EQ(i & 3, result.val->function_table->at(i));
}
}
if (result.val) delete result.val;
}
TEST_F(WasmModuleVerifyTest, IndirectFunctionNoFunctions) {
static const byte data[] = {
// sig#0 -------------------------------------------------------
kDeclSignatures, 1, 0, 0, // void -> void
// indirect table ----------------------------------------------
kDeclFunctionTable, 1, 0, 0,
};
EXPECT_FAILURE(data);
}
TEST_F(WasmModuleVerifyTest, IndirectFunctionInvalidIndex) {
static const byte data[] = {
// sig#0 -------------------------------------------------------
kDeclSignatures, 1, 0, 0, // void -> void
// functions ---------------------------------------------------
kDeclFunctions, 1, FUNCTION(0, 1),
// indirect table ----------------------------------------------
kDeclFunctionTable, 1, 1, 0,
};
EXPECT_FAILURE(data);
}
class WasmSignatureDecodeTest : public TestWithZone {};
TEST_F(WasmSignatureDecodeTest, Ok_v_v) {
static const byte data[] = {0, 0};
Zone zone;
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[] = {0, 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[] = {1, 0, 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[] = {1, // param count
ret_type.code, // ret
param_type.code}; // param
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[] = {2, // param count
kLocalI32, // ret
p0_type.code, // p0
p1_type.code}; // p1
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<byte>(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 (int i = 1; i < 3; i++) {
byte data[] = {2, kLocalI32, kLocalI32, kLocalI32};
data[i] = kInvalidType;
FunctionSig* sig =
DecodeWasmSignatureForTesting(zone(), data, data + arraysize(data));
EXPECT_EQ(nullptr, sig);
}
}
TEST_F(WasmSignatureDecodeTest, Fail_invalid_param_type) {
static const int kParamCount = 3;
for (int i = 0; i < kParamCount; i++) {
byte data[] = {kParamCount, kLocalI32, kLocalI32, kLocalI32, kLocalI32};
data[i + 2] = kLocalVoid;
FunctionSig* sig =
DecodeWasmSignatureForTesting(zone(), data, data + arraysize(data));
EXPECT_EQ(nullptr, sig);
}
}
class WasmFunctionVerifyTest : public TestWithZone {};
TEST_F(WasmFunctionVerifyTest, Ok_v_v_empty) {
byte data[] = {
0, kLocalVoid, // signature
3, 0, // local int32 count
4, 0, // local int64 count
5, 0, // local float32 count
6, 0, // local float64 count
kExprNop // body
};
FunctionResult result = DecodeWasmFunction(nullptr, zone(), nullptr, data,
data + arraysize(data));
EXPECT_TRUE(result.ok());
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(arraysize(data) - 1, function->code_start_offset);
EXPECT_EQ(arraysize(data), function->code_end_offset);
EXPECT_EQ(3, function->local_int32_count);
EXPECT_EQ(4, function->local_int64_count);
EXPECT_EQ(5, function->local_float32_count);
EXPECT_EQ(6, function->local_float64_count);
EXPECT_FALSE(function->external);
EXPECT_FALSE(function->exported);
}
if (result.val) delete result.val;
}
TEST_F(WasmModuleVerifyTest, WLLSectionNoLen) {
const byte data[] = {
kDeclWLL, // section without length.
};
EXPECT_FAILURE(data);
}
TEST_F(WasmModuleVerifyTest, WLLSectionEmpty) {
const byte data[] = {
kDeclWLL, 0, // empty section
};
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
if (result.val) delete result.val;
}
TEST_F(WasmModuleVerifyTest, WLLSectionOne) {
const byte data[] = {
kDeclWLL,
1, // LEB128 1
0, // one byte section
};
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
if (result.val) delete result.val;
}
TEST_F(WasmModuleVerifyTest, WLLSectionTen) {
const byte data[] = {
kDeclWLL,
10, // LEB128 10
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, // 10 byte section
};
ModuleResult result = DecodeModule(data, data + arraysize(data));
EXPECT_TRUE(result.ok());
if (result.val) delete result.val;
}
TEST_F(WasmModuleVerifyTest, WLLSectionOverflow) {
const byte data[] = {
kDeclWLL,
11, // LEB128 11
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, // 10 byte section
};
EXPECT_FAILURE(data);
}
TEST_F(WasmModuleVerifyTest, WLLSectionUnderflow) {
const byte data[] = {
kDeclWLL,
0xff, 0xff, 0xff, 0xff, 0x0f, // LEB128 0xffffffff
1, 2, 3, 4, // 4 byte section
};
EXPECT_FAILURE(data);
}
TEST_F(WasmModuleVerifyTest, WLLSectionLoop) {
// Would infinite loop decoding if wrapping and allowed.
const byte data[] = {
kDeclWLL,
0xfa, 0xff, 0xff, 0xff, 0x0f, // LEB128 0xfffffffa
1, 2, 3, 4, // 4 byte section
};
EXPECT_FAILURE(data);
}
} // namespace wasm
} // namespace internal
} // namespace v8
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