115 lines
4.8 KiB
C++
115 lines
4.8 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "code_item_accessors-inl.h"
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#include <sys/mman.h>
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#include <memory>
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#include <vector>
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#include "dex_file_loader.h"
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#include "gtest/gtest.h"
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namespace art {
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class CodeItemAccessorsTest : public testing::Test {};
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std::unique_ptr<const DexFile> CreateFakeDex(bool compact_dex, std::vector<uint8_t>* data) {
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data->resize(kPageSize);
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if (compact_dex) {
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CompactDexFile::Header* header =
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const_cast<CompactDexFile::Header*>(CompactDexFile::Header::At(data->data()));
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CompactDexFile::WriteMagic(header->magic_);
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CompactDexFile::WriteCurrentVersion(header->magic_);
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header->data_off_ = 0;
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header->data_size_ = data->size();
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} else {
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StandardDexFile::WriteMagic(data->data());
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StandardDexFile::WriteCurrentVersion(data->data());
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}
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const DexFileLoader dex_file_loader;
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std::string error_msg;
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std::unique_ptr<const DexFile> dex(dex_file_loader.Open(data->data(),
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data->size(),
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"location",
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/*location_checksum=*/ 123,
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/*oat_dex_file=*/nullptr,
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/*verify=*/false,
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/*verify_checksum=*/false,
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&error_msg));
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CHECK(dex != nullptr) << error_msg;
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return dex;
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}
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TEST(CodeItemAccessorsTest, TestDexInstructionsAccessor) {
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std::vector<uint8_t> standard_dex_data;
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std::unique_ptr<const DexFile> standard_dex(CreateFakeDex(/*compact_dex=*/false,
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&standard_dex_data));
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ASSERT_TRUE(standard_dex != nullptr);
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std::vector<uint8_t> compact_dex_data;
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std::unique_ptr<const DexFile> compact_dex(CreateFakeDex(/*compact_dex=*/true,
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&compact_dex_data));
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ASSERT_TRUE(compact_dex != nullptr);
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static constexpr uint16_t kRegisterSize = 2;
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static constexpr uint16_t kInsSize = 1;
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static constexpr uint16_t kOutsSize = 3;
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static constexpr uint16_t kTriesSize = 4;
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// debug_info_off_ is not accessible from the helpers yet.
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static constexpr size_t kInsnsSizeInCodeUnits = 5;
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auto verify_code_item = [&](const DexFile* dex,
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const dex::CodeItem* item,
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const uint16_t* insns) {
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CodeItemInstructionAccessor insns_accessor(*dex, item);
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EXPECT_TRUE(insns_accessor.HasCodeItem());
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ASSERT_EQ(insns_accessor.InsnsSizeInCodeUnits(), kInsnsSizeInCodeUnits);
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EXPECT_EQ(insns_accessor.Insns(), insns);
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CodeItemDataAccessor data_accessor(*dex, item);
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EXPECT_TRUE(data_accessor.HasCodeItem());
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EXPECT_EQ(data_accessor.InsnsSizeInCodeUnits(), kInsnsSizeInCodeUnits);
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EXPECT_EQ(data_accessor.Insns(), insns);
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EXPECT_EQ(data_accessor.RegistersSize(), kRegisterSize);
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EXPECT_EQ(data_accessor.InsSize(), kInsSize);
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EXPECT_EQ(data_accessor.OutsSize(), kOutsSize);
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EXPECT_EQ(data_accessor.TriesSize(), kTriesSize);
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};
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StandardDexFile::CodeItem* dex_code_item =
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reinterpret_cast<StandardDexFile::CodeItem*>(const_cast<uint8_t*>(standard_dex->Begin()));
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dex_code_item->registers_size_ = kRegisterSize;
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dex_code_item->ins_size_ = kInsSize;
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dex_code_item->outs_size_ = kOutsSize;
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dex_code_item->tries_size_ = kTriesSize;
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dex_code_item->insns_size_in_code_units_ = kInsnsSizeInCodeUnits;
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verify_code_item(standard_dex.get(), dex_code_item, dex_code_item->insns_);
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CompactDexFile::CodeItem* cdex_code_item =
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reinterpret_cast<CompactDexFile::CodeItem*>(const_cast<uint8_t*>(compact_dex->Begin() +
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CompactDexFile::CodeItem::kMaxPreHeaderSize * sizeof(uint16_t)));
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std::vector<uint16_t> preheader;
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cdex_code_item->Create(kRegisterSize,
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kInsSize,
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kOutsSize,
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kTriesSize,
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kInsnsSizeInCodeUnits,
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cdex_code_item->GetPreHeader());
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verify_code_item(compact_dex.get(), cdex_code_item, cdex_code_item->insns_);
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}
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} // namespace art
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