| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <stdint.h> |
| |
| #include <gmock/gmock.h> |
| #include <gtest/gtest.h> |
| |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include <unwindstack/Elf.h> |
| #include <unwindstack/Global.h> |
| #include <unwindstack/MapInfo.h> |
| #include <unwindstack/Maps.h> |
| |
| #include "ElfFake.h" |
| |
| using ::testing::_; |
| using ::testing::DoAll; |
| using ::testing::Return; |
| using ::testing::SetArgPointee; |
| |
| namespace unwindstack { |
| |
| class GlobalMock : public Global { |
| public: |
| explicit GlobalMock(std::shared_ptr<Memory>& memory) : Global(memory) {} |
| GlobalMock(std::shared_ptr<Memory>& memory, std::vector<std::string>& search_libs) |
| : Global(memory, search_libs) {} |
| |
| MOCK_METHOD(bool, ReadVariableData, (uint64_t), (override)); |
| |
| MOCK_METHOD(void, ProcessArch, (), (override)); |
| |
| void TestFindAndReadVariable(Maps* maps, const char* var_str) { |
| FindAndReadVariable(maps, var_str); |
| } |
| }; |
| |
| class GlobalTest : public ::testing::Test { |
| protected: |
| void SetUp() override { |
| maps_.reset( |
| new BufferMaps("10000-11000 r--p 0000 00:00 0 first.so\n" |
| "11000-12000 r-xp 1000 00:00 0 first.so\n" |
| "12000-13000 rw-p 2000 00:00 0 first.so\n" |
| |
| "20000-22000 r--p 0000 00:00 0 second.so\n" |
| "22000-23000 rw-p 2000 00:00 0 second.so\n" |
| |
| "30000-31000 r--p 0000 00:00 0 third.so\n" |
| "31000-32000 ---p 0000 00:00 0\n" |
| "32000-33000 r-xp 1000 00:00 0 third.so\n" |
| "33000-34000 rw-p 2000 00:00 0 third.so\n" |
| |
| "40000-42000 r--p 0000 00:00 0 fourth.so\n" |
| "42000-43000 rw-p 0000 00:00 0 fourth.so\n")); |
| ASSERT_TRUE(maps_->Parse()); |
| ASSERT_EQ(11U, maps_->Total()); |
| |
| elf_fakes_.push_back(new ElfInterfaceFake(nullptr)); |
| elf_fakes_.push_back(new ElfInterfaceFake(nullptr)); |
| elf_fakes_.push_back(new ElfInterfaceFake(nullptr)); |
| elf_fakes_.push_back(new ElfInterfaceFake(nullptr)); |
| |
| ElfFake* elf_fake = new ElfFake(nullptr); |
| elf_fake->FakeSetValid(true); |
| elf_fake->FakeSetInterface(elf_fakes_[0]); |
| elf_fakes_[0]->FakeSetDataVaddrStart(0x2000); |
| elf_fakes_[0]->FakeSetDataVaddrEnd(0x3000); |
| elf_fakes_[0]->FakeSetDataOffset(0x2000); |
| auto map_info = maps_->Find(0x10000); |
| map_info->GetElfFields().elf_.reset(elf_fake); |
| |
| elf_fake = new ElfFake(nullptr); |
| elf_fake->FakeSetValid(true); |
| elf_fake->FakeSetInterface(elf_fakes_[1]); |
| elf_fakes_[1]->FakeSetDataVaddrStart(0x2000); |
| elf_fakes_[1]->FakeSetDataVaddrEnd(0x3000); |
| elf_fakes_[1]->FakeSetDataOffset(0x2000); |
| map_info = maps_->Find(0x20000); |
| map_info->GetElfFields().elf_.reset(elf_fake); |
| |
| elf_fake = new ElfFake(nullptr); |
| elf_fake->FakeSetValid(true); |
| elf_fake->FakeSetInterface(elf_fakes_[2]); |
| elf_fakes_[2]->FakeSetDataVaddrStart(0x2000); |
| elf_fakes_[2]->FakeSetDataVaddrEnd(0x3000); |
| elf_fakes_[2]->FakeSetDataOffset(0x2000); |
| map_info = maps_->Find(0x30000); |
| map_info->GetElfFields().elf_.reset(elf_fake); |
| |
| elf_fake = new ElfFake(nullptr); |
| elf_fake->FakeSetValid(true); |
| elf_fake->FakeSetInterface(elf_fakes_[3]); |
| elf_fakes_[3]->FakeSetDataVaddrStart(00); |
| elf_fakes_[3]->FakeSetDataVaddrEnd(0x1000); |
| elf_fakes_[3]->FakeSetDataOffset(0); |
| map_info = maps_->Find(0x40000); |
| map_info->GetElfFields().elf_.reset(elf_fake); |
| |
| global_.reset(new GlobalMock(empty_)); |
| } |
| |
| std::shared_ptr<Memory> empty_; |
| std::unique_ptr<BufferMaps> maps_; |
| std::unique_ptr<GlobalMock> global_; |
| std::vector<ElfInterfaceFake*> elf_fakes_; |
| }; |
| |
| TEST_F(GlobalTest, ro_rx_rw) { |
| std::string global_var("fake_global"); |
| elf_fakes_[0]->FakeSetGlobalVariable(global_var, 0x2010); |
| EXPECT_CALL(*global_, ReadVariableData(0x12010)).WillOnce(Return(true)); |
| |
| global_->TestFindAndReadVariable(maps_.get(), global_var.c_str()); |
| } |
| |
| TEST_F(GlobalTest, ro_rx_rw_searchable) { |
| std::vector<std::string> search_libs = {"first.so"}; |
| global_.reset(new GlobalMock(empty_, search_libs)); |
| |
| std::string global_var("fake_global"); |
| elf_fakes_[0]->FakeSetGlobalVariable(global_var, 0x2010); |
| EXPECT_CALL(*global_, ReadVariableData(0x12010)).WillOnce(Return(true)); |
| |
| global_->TestFindAndReadVariable(maps_.get(), global_var.c_str()); |
| } |
| |
| TEST_F(GlobalTest, ro_rx_rw_not_searchable) { |
| std::vector<std::string> search_libs = {"second.so"}; |
| global_.reset(new GlobalMock(empty_, search_libs)); |
| |
| std::string global_var("fake_global"); |
| elf_fakes_[0]->FakeSetGlobalVariable(global_var, 0x2010); |
| |
| global_->TestFindAndReadVariable(maps_.get(), global_var.c_str()); |
| } |
| |
| TEST_F(GlobalTest, ro_rw) { |
| std::string global_var("fake_global"); |
| elf_fakes_[1]->FakeSetGlobalVariable(global_var, 0x2010); |
| EXPECT_CALL(*global_, ReadVariableData(0x22010)).WillOnce(Return(true)); |
| |
| global_->TestFindAndReadVariable(maps_.get(), global_var.c_str()); |
| } |
| |
| TEST_F(GlobalTest, ro_blank_rx_rw) { |
| std::string global_var("fake_global"); |
| elf_fakes_[2]->FakeSetGlobalVariable(global_var, 0x2010); |
| EXPECT_CALL(*global_, ReadVariableData(0x33010)).WillOnce(Return(true)); |
| |
| global_->TestFindAndReadVariable(maps_.get(), global_var.c_str()); |
| } |
| |
| TEST_F(GlobalTest, ro_rw_with_zero_offset) { |
| std::string global_var("fake_global"); |
| elf_fakes_[3]->FakeSetGlobalVariable(global_var, 0x10); |
| EXPECT_CALL(*global_, ReadVariableData(0x42010)).WillOnce(Return(true)); |
| |
| global_->TestFindAndReadVariable(maps_.get(), global_var.c_str()); |
| } |
| |
| } // namespace unwindstack |