147 lines
4.8 KiB
C++
147 lines
4.8 KiB
C++
/*
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* Copyright (C) 2016 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 <elf.h>
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#include <errno.h>
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#include <signal.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/ptrace.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <memory>
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#include <vector>
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#include <android-base/file.h>
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#include <android-base/test_utils.h>
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#include <gtest/gtest.h>
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#include <unwindstack/Elf.h>
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#include <unwindstack/MapInfo.h>
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#include <unwindstack/Memory.h>
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#include "ElfTestUtils.h"
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namespace unwindstack {
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class MapInfoGetElfTest : public ::testing::Test {
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protected:
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void SetUp() override {
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map_ = mmap(nullptr, kMapSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
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ASSERT_NE(MAP_FAILED, map_);
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uint64_t start = reinterpret_cast<uint64_t>(map_);
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info_.reset(new MapInfo{.start = start, .end = start + 1024, .offset = 0, .name = ""});
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}
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void TearDown() override { munmap(map_, kMapSize); }
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const size_t kMapSize = 4096;
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void* map_ = nullptr;
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std::unique_ptr<MapInfo> info_;
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};
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TEST_F(MapInfoGetElfTest, invalid) {
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// The map is empty, but this should still create an invalid elf object.
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std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
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ASSERT_TRUE(elf.get() != nullptr);
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ASSERT_FALSE(elf->valid());
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}
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TEST_F(MapInfoGetElfTest, valid32) {
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Elf32_Ehdr ehdr;
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TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, EM_ARM);
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memcpy(map_, &ehdr, sizeof(ehdr));
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std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
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ASSERT_TRUE(elf.get() != nullptr);
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ASSERT_TRUE(elf->valid());
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EXPECT_EQ(static_cast<uint32_t>(EM_ARM), elf->machine_type());
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EXPECT_EQ(ELFCLASS32, elf->class_type());
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}
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TEST_F(MapInfoGetElfTest, valid64) {
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Elf64_Ehdr ehdr;
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TestInitEhdr<Elf64_Ehdr>(&ehdr, ELFCLASS64, EM_AARCH64);
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memcpy(map_, &ehdr, sizeof(ehdr));
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std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
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ASSERT_TRUE(elf.get() != nullptr);
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ASSERT_TRUE(elf->valid());
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EXPECT_EQ(static_cast<uint32_t>(EM_AARCH64), elf->machine_type());
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EXPECT_EQ(ELFCLASS64, elf->class_type());
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}
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TEST_F(MapInfoGetElfTest, gnu_debugdata_do_not_init32) {
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TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(
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ELFCLASS32, EM_ARM, false, [&](uint64_t offset, const void* ptr, size_t size) {
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memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
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});
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std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
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ASSERT_TRUE(elf.get() != nullptr);
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ASSERT_TRUE(elf->valid());
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EXPECT_EQ(static_cast<uint32_t>(EM_ARM), elf->machine_type());
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EXPECT_EQ(ELFCLASS32, elf->class_type());
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EXPECT_TRUE(elf->gnu_debugdata_interface() == nullptr);
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}
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TEST_F(MapInfoGetElfTest, gnu_debugdata_do_not_init64) {
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TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(
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ELFCLASS64, EM_AARCH64, false, [&](uint64_t offset, const void* ptr, size_t size) {
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memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
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});
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std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
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ASSERT_TRUE(elf.get() != nullptr);
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ASSERT_TRUE(elf->valid());
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EXPECT_EQ(static_cast<uint32_t>(EM_AARCH64), elf->machine_type());
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EXPECT_EQ(ELFCLASS64, elf->class_type());
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EXPECT_TRUE(elf->gnu_debugdata_interface() == nullptr);
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}
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TEST_F(MapInfoGetElfTest, gnu_debugdata_init32) {
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TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(
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ELFCLASS32, EM_ARM, true, [&](uint64_t offset, const void* ptr, size_t size) {
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memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
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});
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std::unique_ptr<Elf> elf(info_->GetElf(getpid(), true));
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ASSERT_TRUE(elf.get() != nullptr);
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ASSERT_TRUE(elf->valid());
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EXPECT_EQ(static_cast<uint32_t>(EM_ARM), elf->machine_type());
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EXPECT_EQ(ELFCLASS32, elf->class_type());
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EXPECT_TRUE(elf->gnu_debugdata_interface() != nullptr);
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}
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TEST_F(MapInfoGetElfTest, gnu_debugdata_init64) {
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TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(
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ELFCLASS64, EM_AARCH64, true, [&](uint64_t offset, const void* ptr, size_t size) {
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memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
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});
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std::unique_ptr<Elf> elf(info_->GetElf(getpid(), true));
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ASSERT_TRUE(elf.get() != nullptr);
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ASSERT_TRUE(elf->valid());
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EXPECT_EQ(static_cast<uint32_t>(EM_AARCH64), elf->machine_type());
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EXPECT_EQ(ELFCLASS64, elf->class_type());
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EXPECT_TRUE(elf->gnu_debugdata_interface() != nullptr);
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}
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} // namespace unwindstack
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