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// Copyright 2020 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/objects/objects-inl.h"
#include "src/wasm/module-decoder.h"
#include "src/wasm/wasm-engine.h"
#include "src/wasm/wasm-features.h"
#include "src/wasm/wasm-limits.h"
#include "test/common/wasm/wasm-macro-gen.h"
#include "test/unittests/test-utils.h"
namespace v8 {
namespace internal {
namespace wasm {
namespace module_decoder_unittest {
#define EXPECT_OK(result) \
do { \
if (!result.ok()) { \
GTEST_NONFATAL_FAILURE_(result.error().message().c_str()); \
return; \
} \
} while (false)
class Memory64DecodingTest : public TestWithIsolateAndZone {
public:
ModuleResult DecodeModule(std::initializer_list<uint8_t> module_body_bytes) {
// Add the wasm magic and version number automatically.
std::vector<uint8_t> module_bytes{WASM_MODULE_HEADER};
module_bytes.insert(module_bytes.end(), module_body_bytes);
static constexpr WasmFeatures kEnabledFeatures{
WasmFeature::kFeature_memory64};
return DecodeWasmModule(
kEnabledFeatures, module_bytes.data(),
module_bytes.data() + module_bytes.size(), false, kWasmOrigin,
isolate()->counters(), isolate()->metrics_recorder(),
v8::metrics::Recorder::ContextId::Empty(), DecodingMethod::kSync,
wasm::GetWasmEngine()->allocator());
}
};
TEST_F(Memory64DecodingTest, MemoryLimitLEB64) {
// 2 bytes LEB (32-bit range), no maximum.
ModuleResult result = DecodeModule(
{SECTION(Memory, ENTRY_COUNT(1), kMemory64NoMaximum, U32V_2(5))});
EXPECT_OK(result);
EXPECT_EQ(5u, result.value()->initial_pages);
EXPECT_EQ(false, result.value()->has_maximum_pages);
// 2 bytes LEB (32-bit range), with maximum.
result = DecodeModule({SECTION(Memory, ENTRY_COUNT(1), kMemory64WithMaximum,
U32V_2(7), U32V_2(47))});
EXPECT_OK(result);
EXPECT_EQ(7u, result.value()->initial_pages);
EXPECT_EQ(true, result.value()->has_maximum_pages);
EXPECT_EQ(47u, result.value()->maximum_pages);
// 10 bytes LEB, 32-bit range, no maximum.
result = DecodeModule(
{SECTION(Memory, ENTRY_COUNT(1), kMemory64NoMaximum, U64V_10(2))});
EXPECT_OK(result);
EXPECT_EQ(2u, result.value()->initial_pages);
EXPECT_EQ(false, result.value()->has_maximum_pages);
// 10 bytes LEB, 32-bit range, with maximum.
result = DecodeModule({SECTION(Memory, ENTRY_COUNT(1), kMemory64WithMaximum,
U64V_10(2), U64V_10(6))});
EXPECT_OK(result);
EXPECT_EQ(2u, result.value()->initial_pages);
EXPECT_EQ(true, result.value()->has_maximum_pages);
EXPECT_EQ(6u, result.value()->maximum_pages);
// TODO(clemensb): Test numbers outside the 32-bit range once that's
// supported.
}
} // namespace module_decoder_unittest
} // namespace wasm
} // namespace internal
} // namespace v8
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