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304 lines
12 KiB
304 lines
12 KiB
/*
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* Copyright (C) 2018 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 "dso.h"
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#include <gtest/gtest.h>
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#include <android-base/file.h>
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#include <android-base/stringprintf.h>
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#include <android-base/test_utils.h>
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#include "get_test_data.h"
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#include "read_apk.h"
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#include "thread_tree.h"
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#include "utils.h"
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using namespace simpleperf;
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using namespace simpleperf_dso_impl;
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TEST(DebugElfFileFinder, use_build_id_list) {
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// Create a temp symdir with build_id_list.
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TemporaryDir tmpdir;
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TemporaryFile tmpfile(tmpdir.path);
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std::string data;
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ASSERT_TRUE(android::base::ReadFileToString(GetTestData(ELF_FILE), &data));
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ASSERT_TRUE(android::base::WriteStringToFile(data, tmpfile.path));
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BuildId build_id(ELF_FILE_BUILD_ID);
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std::string build_id_list = android::base::StringPrintf(
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"%s=%s\n", build_id.ToString().c_str(), android::base::Basename(tmpfile.path).c_str());
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std::string build_id_list_file = std::string(tmpdir.path) + "/build_id_list";
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ASSERT_TRUE(android::base::WriteStringToFile(build_id_list, build_id_list_file));
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DebugElfFileFinder finder;
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ASSERT_TRUE(finder.SetSymFsDir(tmpdir.path));
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ASSERT_EQ(finder.FindDebugFile("elf", false, build_id), std::string(tmpfile.path));
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unlink(build_id_list_file.c_str());
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}
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static std::string ConvertPathSeparator(const std::string& path) {
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std::string result = path;
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if (OS_PATH_SEPARATOR != '/') {
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std::replace(result.begin(), result.end(), '/', OS_PATH_SEPARATOR);
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}
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return result;
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}
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TEST(DebugElfFileFinder, concatenating_symfs_dir) {
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DebugElfFileFinder finder;
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ASSERT_TRUE(finder.SetSymFsDir(GetTestDataDir()));
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ASSERT_EQ(finder.GetPathInSymFsDir("/system/libc.so"),
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GetTestDataDir() + "system" + OS_PATH_SEPARATOR + "libc.so");
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ASSERT_EQ(finder.GetPathInSymFsDir("/data/base.apk!/lib/base.so"),
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GetTestDataDir() + "data" + OS_PATH_SEPARATOR + "base.apk!/lib/base.so");
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BuildId build_id(ELF_FILE_BUILD_ID);
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ASSERT_EQ(finder.FindDebugFile(ELF_FILE, false, build_id), GetTestDataDir() + ELF_FILE);
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std::string native_lib_in_apk = APK_FILE + "!/" + NATIVELIB_IN_APK;
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std::string apk_path = ConvertPathSeparator(APK_FILE);
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ASSERT_EQ(finder.FindDebugFile(native_lib_in_apk, false, native_lib_build_id),
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GetTestDataDir() + apk_path + "!/" + NATIVELIB_IN_APK);
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}
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TEST(DebugElfFileFinder, use_vdso) {
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DebugElfFileFinder finder;
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std::string fake_vdso32 = "fake_vdso32";
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std::string fake_vdso64 = "fake_vdso64";
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finder.SetVdsoFile(fake_vdso32, false);
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finder.SetVdsoFile(fake_vdso64, true);
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BuildId build_id;
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ASSERT_EQ(finder.FindDebugFile("[vdso]", false, build_id), fake_vdso32);
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ASSERT_EQ(finder.FindDebugFile("[vdso]", true, build_id), fake_vdso64);
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}
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TEST(DebugElfFileFinder, add_symbol_dir) {
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DebugElfFileFinder finder;
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ASSERT_FALSE(finder.AddSymbolDir(GetTestDataDir() + "dir_not_exist"));
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ASSERT_EQ(finder.FindDebugFile("elf", false, CHECK_ELF_FILE_BUILD_ID), "elf");
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std::string symfs_dir = ConvertPathSeparator(GetTestDataDir() + CORRECT_SYMFS_FOR_BUILD_ID_CHECK);
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ASSERT_TRUE(finder.AddSymbolDir(symfs_dir));
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ASSERT_EQ(finder.FindDebugFile("elf", false, CHECK_ELF_FILE_BUILD_ID),
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symfs_dir + OS_PATH_SEPARATOR + "elf_for_build_id_check");
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}
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TEST(DebugElfFileFinder, build_id_list) {
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DebugElfFileFinder finder;
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// Find file in symfs dir with correct build_id_list.
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std::string symfs_dir = ConvertPathSeparator(GetTestDataDir() + "data/symfs_with_build_id_list");
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ASSERT_TRUE(finder.SetSymFsDir(symfs_dir));
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ASSERT_EQ(finder.FindDebugFile("elf", false, CHECK_ELF_FILE_BUILD_ID),
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symfs_dir + OS_PATH_SEPARATOR + "elf_for_build_id_check");
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// Find file in symfs_dir with wrong build_id_list.
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symfs_dir = ConvertPathSeparator(GetTestDataDir() + "data/symfs_with_wrong_build_id_list");
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finder.Reset();
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ASSERT_TRUE(finder.SetSymFsDir(symfs_dir));
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ASSERT_EQ(finder.FindDebugFile("elf", false, CHECK_ELF_FILE_BUILD_ID), "elf");
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}
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TEST(DebugElfFileFinder, no_build_id) {
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DebugElfFileFinder finder;
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// If not given a build id, we should match an elf in symfs without build id.
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std::string symfs_dir = ConvertPathSeparator(GetTestDataDir() + "data/symfs_without_build_id");
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ASSERT_TRUE(finder.SetSymFsDir(symfs_dir));
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BuildId build_id;
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ASSERT_EQ(finder.FindDebugFile("elf", false, build_id), symfs_dir + OS_PATH_SEPARATOR + "elf");
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}
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TEST(DebugElfFileFinder, find_basename_in_symfs_dir) {
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DebugElfFileFinder finder;
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// Find normal elf file.
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finder.SetSymFsDir(GetTestDataDir());
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BuildId build_id(ELF_FILE_BUILD_ID);
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ASSERT_EQ(finder.FindDebugFile("random_dir/elf", false, build_id), GetTestData("elf"));
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// Find embedded native library.
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ASSERT_EQ(finder.FindDebugFile("base.apk!/lib/x86_64/elf", false, build_id), GetTestData("elf"));
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// Find elf file without build id.
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std::string symfs_dir = ConvertPathSeparator(GetTestDataDir() + "data/symfs_without_build_id");
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finder.SetSymFsDir(symfs_dir);
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build_id = BuildId();
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ASSERT_EQ(finder.FindDebugFile("random_dir/elf", false, build_id),
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symfs_dir + OS_PATH_SEPARATOR + "elf");
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}
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TEST(DebugElfFileFinder, build_id_mismatch) {
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DebugElfFileFinder finder;
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finder.SetSymFsDir(GetTestDataDir());
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CapturedStderr capture;
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capture.Start();
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BuildId mismatch_build_id("0c12a384a9f4a3f3659b7171ca615dbec3a81f71");
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std::string debug_file = finder.FindDebugFile(ELF_FILE, false, mismatch_build_id);
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capture.Stop();
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std::string stderr_output = capture.str();
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ASSERT_EQ(debug_file, ELF_FILE);
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ASSERT_NE(stderr_output.find("build id mismatch"), std::string::npos);
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}
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TEST(dso, dex_file_dso) {
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#if defined(__linux__)
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for (DsoType dso_type : {DSO_DEX_FILE, DSO_ELF_FILE}) {
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std::unique_ptr<Dso> dso = Dso::CreateDso(dso_type, GetTestData("base.vdex"));
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ASSERT_TRUE(dso);
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dso->AddDexFileOffset(0x28);
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ASSERT_EQ(DSO_DEX_FILE, dso->type());
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const Symbol* symbol = dso->FindSymbol(0x6c77e);
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ASSERT_NE(symbol, nullptr);
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ASSERT_EQ(symbol->addr, static_cast<uint64_t>(0x6c77e));
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ASSERT_EQ(symbol->len, static_cast<uint64_t>(0x16));
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ASSERT_STREQ(symbol->DemangledName(),
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"com.example.simpleperf.simpleperfexamplewithnative.MixActivity$1.run");
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uint64_t min_vaddr;
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uint64_t file_offset_of_min_vaddr;
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dso->GetMinExecutableVaddr(&min_vaddr, &file_offset_of_min_vaddr);
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ASSERT_EQ(min_vaddr, 0);
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ASSERT_EQ(file_offset_of_min_vaddr, 0);
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// Don't crash on not exist zip entry.
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dso = Dso::CreateDso(dso_type, GetTestData("base.zip!/not_exist_entry"));
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ASSERT_TRUE(dso);
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ASSERT_EQ(nullptr, dso->FindSymbol(0));
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}
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#else
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GTEST_LOG_(INFO) << "This test only runs on linux because of libdexfile";
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#endif // defined(__linux__)
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}
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TEST(dso, dex_file_offsets) {
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std::unique_ptr<Dso> dso = Dso::CreateDso(DSO_DEX_FILE, "");
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ASSERT_TRUE(dso);
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for (uint64_t offset : {0x3, 0x1, 0x5, 0x4, 0x2, 0x4, 0x3}) {
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dso->AddDexFileOffset(offset);
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}
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ASSERT_EQ(*dso->DexFileOffsets(), std::vector<uint64_t>({0x1, 0x2, 0x3, 0x4, 0x5}));
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}
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TEST(dso, embedded_elf) {
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const std::string file_path = GetUrlInApk(GetTestData(APK_FILE), NATIVELIB_IN_APK);
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std::unique_ptr<Dso> dso = Dso::CreateDso(DSO_ELF_FILE, file_path);
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ASSERT_TRUE(dso);
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ASSERT_EQ(dso->Path(), file_path);
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ASSERT_EQ(dso->GetDebugFilePath(), file_path);
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uint64_t min_vaddr;
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uint64_t file_offset_of_min_vaddr;
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dso->GetMinExecutableVaddr(&min_vaddr, &file_offset_of_min_vaddr);
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ASSERT_EQ(min_vaddr, 0);
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ASSERT_EQ(file_offset_of_min_vaddr, 0);
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const Symbol* symbol = dso->FindSymbol(0x9a4);
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ASSERT_TRUE(symbol != nullptr);
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ASSERT_STREQ(symbol->Name(), "Java_com_example_hellojni_HelloJni_callFunc1");
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BuildId build_id;
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ASSERT_TRUE(GetBuildIdFromDsoPath(file_path, &build_id));
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ASSERT_EQ(build_id, native_lib_build_id);
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}
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TEST(dso, IpToVaddrInFile) {
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std::unique_ptr<Dso> dso = Dso::CreateDso(DSO_ELF_FILE, GetTestData("libc.so"));
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ASSERT_TRUE(dso);
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ASSERT_EQ(0xa5140, dso->IpToVaddrInFile(0xe9201140, 0xe9201000, 0xa5000));
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}
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TEST(dso, kernel_address_randomization) {
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// Use ELF_FILE as a fake kernel vmlinux.
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const std::string vmlinux_path = GetTestData(ELF_FILE);
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Dso::SetVmlinux(vmlinux_path);
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std::unique_ptr<Dso> dso = Dso::CreateDso(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME);
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ASSERT_TRUE(dso);
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ASSERT_EQ(dso->GetDebugFilePath(), vmlinux_path);
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// When map_start = 0, can't fix kernel address randomization. So vmlinux isn't used.
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ASSERT_EQ(dso->IpToVaddrInFile(0x800500, 0, 0), 0x800500);
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ASSERT_FALSE(dso->IpToFileOffset(0x800500, 0, 0));
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ASSERT_TRUE(dso->FindSymbol(0x400510) == nullptr);
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dso = Dso::CreateDso(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME);
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ASSERT_TRUE(dso);
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ASSERT_EQ(dso->GetDebugFilePath(), vmlinux_path);
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// When map_start != 0, can fix kernel address randomization. So vmlinux is used.
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ASSERT_EQ(dso->IpToVaddrInFile(0x800500, 0x800400, 0), 0x400500);
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ASSERT_EQ(dso->IpToFileOffset(0x800500, 0x800400, 0).value(), 0x500);
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const Symbol* symbol = dso->FindSymbol(0x400510);
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ASSERT_TRUE(symbol != nullptr);
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ASSERT_STREQ(symbol->Name(), "GlobalFunc");
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}
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TEST(dso, find_vmlinux_in_symdirs) {
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// Create a symdir.
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TemporaryDir tmpdir;
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std::string vmlinux_path = std::string(tmpdir.path) + OS_PATH_SEPARATOR + "elf";
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std::string data;
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ASSERT_TRUE(android::base::ReadFileToString(GetTestData(ELF_FILE), &data));
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ASSERT_TRUE(android::base::WriteStringToFile(data, vmlinux_path));
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// Find vmlinux in symbol dirs.
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Dso::SetVmlinux("");
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Dso::AddSymbolDir(tmpdir.path);
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Dso::SetBuildIds({std::make_pair(DEFAULT_KERNEL_MMAP_NAME, BuildId(ELF_FILE_BUILD_ID))});
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std::unique_ptr<Dso> dso = Dso::CreateDso(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME);
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ASSERT_TRUE(dso);
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ASSERT_EQ(dso->GetDebugFilePath(), vmlinux_path);
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}
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TEST(dso, kernel_module) {
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// Test finding debug files for kernel modules.
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Dso::SetSymFsDir(GetTestDataDir());
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std::vector<std::pair<std::string, BuildId>> build_ids;
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build_ids.emplace_back(ELF_FILE, BuildId(ELF_FILE_BUILD_ID));
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Dso::SetBuildIds(build_ids);
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std::unique_ptr<Dso> kernel_dso = Dso::CreateDso(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME);
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ASSERT_TRUE(kernel_dso);
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std::unique_ptr<Dso> dso = Dso::CreateKernelModuleDso(ELF_FILE, 0, 0, kernel_dso.get());
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ASSERT_EQ(dso->GetDebugFilePath(), GetTestData(ELF_FILE));
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}
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TEST(dso, kernel_module_CalculateMinVaddr) {
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// Create fake Dso objects.
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auto kernel_dso = Dso::CreateDso(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME);
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ASSERT_TRUE(kernel_dso);
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const uint64_t module_memory_start = 0xffffffa9bc790000ULL;
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const uint64_t module_memory_size = 0x8d7000ULL;
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auto module_dso =
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Dso::CreateKernelModuleDso("fake_module.ko", module_memory_start,
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module_memory_start + module_memory_size, kernel_dso.get());
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ASSERT_TRUE(module_dso);
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// Provide symbol info for calculating min vaddr.
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std::vector<Symbol> kernel_symbols;
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kernel_symbols.emplace_back("fake_module_function [fake_module]", 0xffffffa9bc7a64e8ULL, 0x60c);
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kernel_dso->SetSymbols(&kernel_symbols);
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std::vector<Symbol> module_symbols;
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module_symbols.emplace_back("fake_module_function", 0x144e8, 0x60c);
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module_dso->SetSymbols(&module_symbols);
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// Calculate min vaddr.
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uint64_t min_vaddr;
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uint64_t memory_offset;
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module_dso->GetMinExecutableVaddr(&min_vaddr, &memory_offset);
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ASSERT_EQ(min_vaddr, 0x144e8);
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ASSERT_EQ(memory_offset, 0x164e8);
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// Use min vaddr in IpToVaddrInFile().
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ASSERT_EQ(module_dso->IpToVaddrInFile(0xffffffa9bc7a64e8ULL, module_memory_start, 0), 0x144e8);
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}
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TEST(dso, symbol_map_file) {
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auto dso = Dso::CreateDso(DSO_SYMBOL_MAP_FILE, "perf-123.map");
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ASSERT_TRUE(dso);
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ASSERT_EQ(DSO_SYMBOL_MAP_FILE, dso->type());
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ASSERT_EQ(0x12345678, dso->IpToVaddrInFile(0x12345678, 0x0, 0x0));
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ASSERT_EQ(0x12345678, dso->IpToVaddrInFile(0x12345678, 0xe9201000, 0xa5000));
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}
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