1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include "elf_file.h" 18 19#include "base/stringprintf.h" 20#include "common_compiler_test.h" 21#include "oat.h" 22#include "utils.h" 23 24namespace art { 25 26class ElfWriterTest : public CommonCompilerTest { 27 protected: 28 virtual void SetUp() { 29 ReserveImageSpace(); 30 CommonCompilerTest::SetUp(); 31 } 32}; 33 34#define EXPECT_ELF_FILE_ADDRESS(ef, expected_value, symbol_name, build_map) \ 35 do { \ 36 void* addr = reinterpret_cast<void*>(ef->FindSymbolAddress(SHT_DYNSYM, \ 37 symbol_name, \ 38 build_map)); \ 39 EXPECT_NE(nullptr, addr); \ 40 EXPECT_LT(static_cast<uintptr_t>(ART_BASE_ADDRESS), reinterpret_cast<uintptr_t>(addr)); \ 41 if (expected_value == nullptr) { \ 42 expected_value = addr; \ 43 } \ 44 EXPECT_EQ(expected_value, addr); \ 45 EXPECT_EQ(expected_value, ef->FindDynamicSymbolAddress(symbol_name)); \ 46 } while (false) 47 48TEST_F(ElfWriterTest, dlsym) { 49 std::string elf_location; 50 if (IsHost()) { 51 const char* host_dir = getenv("ANDROID_HOST_OUT"); 52 CHECK(host_dir != NULL); 53 elf_location = StringPrintf("%s/framework/core.oat", host_dir); 54 } else { 55 elf_location = "/data/art-test/core.oat"; 56 } 57 std::string elf_filename = GetSystemImageFilename(elf_location.c_str(), kRuntimeISA); 58 LOG(INFO) << "elf_filename=" << elf_filename; 59 60 UnreserveImageSpace(); 61 void* dl_oatdata = NULL; 62 void* dl_oatexec = NULL; 63 void* dl_oatlastword = NULL; 64 65#if defined(ART_USE_PORTABLE_COMPILER) 66 { 67 // We only use dlopen for loading with portable. See OatFile::Open. 68 void* dl_oat_so = dlopen(elf_filename.c_str(), RTLD_NOW); 69 ASSERT_TRUE(dl_oat_so != NULL) << dlerror(); 70 dl_oatdata = dlsym(dl_oat_so, "oatdata"); 71 ASSERT_TRUE(dl_oatdata != NULL); 72 73 OatHeader* dl_oat_header = reinterpret_cast<OatHeader*>(dl_oatdata); 74 ASSERT_TRUE(dl_oat_header->IsValid()); 75 dl_oatexec = dlsym(dl_oat_so, "oatexec"); 76 ASSERT_TRUE(dl_oatexec != NULL); 77 ASSERT_LT(dl_oatdata, dl_oatexec); 78 79 dl_oatlastword = dlsym(dl_oat_so, "oatlastword"); 80 ASSERT_TRUE(dl_oatlastword != NULL); 81 ASSERT_LT(dl_oatexec, dl_oatlastword); 82 83 ASSERT_EQ(0, dlclose(dl_oat_so)); 84 } 85#endif 86 87 std::unique_ptr<File> file(OS::OpenFileForReading(elf_filename.c_str())); 88 ASSERT_TRUE(file.get() != NULL); 89 { 90 std::string error_msg; 91 std::unique_ptr<ElfFile> ef(ElfFile::Open(file.get(), false, false, &error_msg)); 92 CHECK(ef.get() != nullptr) << error_msg; 93 EXPECT_ELF_FILE_ADDRESS(ef, dl_oatdata, "oatdata", false); 94 EXPECT_ELF_FILE_ADDRESS(ef, dl_oatexec, "oatexec", false); 95 EXPECT_ELF_FILE_ADDRESS(ef, dl_oatlastword, "oatlastword", false); 96 } 97 { 98 std::string error_msg; 99 std::unique_ptr<ElfFile> ef(ElfFile::Open(file.get(), false, false, &error_msg)); 100 CHECK(ef.get() != nullptr) << error_msg; 101 EXPECT_ELF_FILE_ADDRESS(ef, dl_oatdata, "oatdata", true); 102 EXPECT_ELF_FILE_ADDRESS(ef, dl_oatexec, "oatexec", true); 103 EXPECT_ELF_FILE_ADDRESS(ef, dl_oatlastword, "oatlastword", true); 104 } 105 { 106 std::string error_msg; 107 std::unique_ptr<ElfFile> ef(ElfFile::Open(file.get(), false, true, &error_msg)); 108 CHECK(ef.get() != nullptr) << error_msg; 109 CHECK(ef->Load(false, &error_msg)) << error_msg; 110 EXPECT_EQ(dl_oatdata, ef->FindDynamicSymbolAddress("oatdata")); 111 EXPECT_EQ(dl_oatexec, ef->FindDynamicSymbolAddress("oatexec")); 112 EXPECT_EQ(dl_oatlastword, ef->FindDynamicSymbolAddress("oatlastword")); 113 } 114} 115 116} // namespace art 117