Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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.h> |
Christopher Ferris | bae69f1 | 2017-06-28 14:51:54 -0700 | [diff] [blame] | 18 | #include <fcntl.h> |
| 19 | #include <sys/stat.h> |
| 20 | #include <sys/types.h> |
| 21 | #include <unistd.h> |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 22 | |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 23 | #include <gmock/gmock.h> |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 24 | #include <gtest/gtest.h> |
| 25 | |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 26 | #include <unwindstack/Elf.h> |
| 27 | #include <unwindstack/MapInfo.h> |
Christopher Ferris | d06001d | 2017-11-30 18:56:01 -0800 | [diff] [blame] | 28 | #include <unwindstack/RegsArm.h> |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 29 | |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 30 | #include "ElfFake.h" |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 31 | #include "ElfTestUtils.h" |
Christopher Ferris | a019665 | 2017-07-18 16:09:20 -0700 | [diff] [blame] | 32 | #include "LogFake.h" |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 33 | #include "MemoryFake.h" |
| 34 | |
| 35 | #if !defined(PT_ARM_EXIDX) |
| 36 | #define PT_ARM_EXIDX 0x70000001 |
| 37 | #endif |
| 38 | |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 39 | namespace unwindstack { |
| 40 | |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 41 | class ElfTest : public ::testing::Test { |
| 42 | protected: |
| 43 | void SetUp() override { |
| 44 | memory_ = new MemoryFake; |
| 45 | } |
| 46 | |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 47 | void InitElf32(uint32_t machine_type) { |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 48 | Elf32_Ehdr ehdr; |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 49 | TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, machine_type); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 50 | |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 51 | ehdr.e_phoff = 0x100; |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 52 | ehdr.e_ehsize = sizeof(ehdr); |
| 53 | ehdr.e_phentsize = sizeof(Elf32_Phdr); |
| 54 | ehdr.e_phnum = 1; |
| 55 | ehdr.e_shentsize = sizeof(Elf32_Shdr); |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 56 | if (machine_type == EM_ARM) { |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 57 | ehdr.e_flags = 0x5000200; |
| 58 | ehdr.e_phnum = 2; |
| 59 | } |
| 60 | memory_->SetMemory(0, &ehdr, sizeof(ehdr)); |
| 61 | |
| 62 | Elf32_Phdr phdr; |
| 63 | memset(&phdr, 0, sizeof(phdr)); |
| 64 | phdr.p_type = PT_LOAD; |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 65 | phdr.p_filesz = 0x10000; |
| 66 | phdr.p_memsz = 0x10000; |
| 67 | phdr.p_flags = PF_R | PF_X; |
| 68 | phdr.p_align = 0x1000; |
| 69 | memory_->SetMemory(0x100, &phdr, sizeof(phdr)); |
| 70 | |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 71 | if (machine_type == EM_ARM) { |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 72 | memset(&phdr, 0, sizeof(phdr)); |
| 73 | phdr.p_type = PT_ARM_EXIDX; |
| 74 | phdr.p_offset = 0x30000; |
| 75 | phdr.p_vaddr = 0x30000; |
| 76 | phdr.p_paddr = 0x30000; |
| 77 | phdr.p_filesz = 16; |
| 78 | phdr.p_memsz = 16; |
| 79 | phdr.p_flags = PF_R; |
| 80 | phdr.p_align = 0x4; |
| 81 | memory_->SetMemory(0x100 + sizeof(phdr), &phdr, sizeof(phdr)); |
| 82 | } |
| 83 | } |
| 84 | |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 85 | void InitElf64(uint32_t machine_type) { |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 86 | Elf64_Ehdr ehdr; |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 87 | TestInitEhdr<Elf64_Ehdr>(&ehdr, ELFCLASS64, machine_type); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 88 | |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 89 | ehdr.e_phoff = 0x100; |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 90 | ehdr.e_flags = 0x5000200; |
| 91 | ehdr.e_ehsize = sizeof(ehdr); |
| 92 | ehdr.e_phentsize = sizeof(Elf64_Phdr); |
| 93 | ehdr.e_phnum = 1; |
| 94 | ehdr.e_shentsize = sizeof(Elf64_Shdr); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 95 | memory_->SetMemory(0, &ehdr, sizeof(ehdr)); |
| 96 | |
| 97 | Elf64_Phdr phdr; |
| 98 | memset(&phdr, 0, sizeof(phdr)); |
| 99 | phdr.p_type = PT_LOAD; |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 100 | phdr.p_filesz = 0x10000; |
| 101 | phdr.p_memsz = 0x10000; |
| 102 | phdr.p_flags = PF_R | PF_X; |
| 103 | phdr.p_align = 0x1000; |
| 104 | memory_->SetMemory(0x100, &phdr, sizeof(phdr)); |
| 105 | } |
| 106 | |
Christopher Ferris | f0c82e7 | 2019-12-04 13:37:11 -0800 | [diff] [blame] | 107 | void VerifyStepIfSignalHandler(uint64_t load_bias); |
| 108 | |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 109 | MemoryFake* memory_; |
| 110 | }; |
| 111 | |
| 112 | TEST_F(ElfTest, invalid_memory) { |
| 113 | Elf elf(memory_); |
| 114 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 115 | ASSERT_FALSE(elf.Init()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 116 | ASSERT_FALSE(elf.valid()); |
| 117 | } |
| 118 | |
| 119 | TEST_F(ElfTest, elf_invalid) { |
| 120 | Elf elf(memory_); |
| 121 | |
| 122 | InitElf32(EM_386); |
| 123 | |
| 124 | // Corrupt the ELF signature. |
| 125 | memory_->SetData32(0, 0x7f000000); |
| 126 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 127 | ASSERT_FALSE(elf.Init()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 128 | ASSERT_FALSE(elf.valid()); |
| 129 | ASSERT_TRUE(elf.interface() == nullptr); |
| 130 | |
Christopher Ferris | 02a6c44 | 2019-03-11 14:43:33 -0700 | [diff] [blame] | 131 | ASSERT_EQ("", elf.GetSoname()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 132 | |
Christopher Ferris | 02a6c44 | 2019-03-11 14:43:33 -0700 | [diff] [blame] | 133 | std::string name; |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 134 | uint64_t func_offset; |
| 135 | ASSERT_FALSE(elf.GetFunctionName(0, &name, &func_offset)); |
| 136 | |
Christopher Ferris | d11ed86 | 2019-04-11 19:45:35 -0700 | [diff] [blame] | 137 | ASSERT_FALSE(elf.StepIfSignalHandler(0, nullptr, nullptr)); |
| 138 | EXPECT_EQ(ERROR_INVALID_ELF, elf.GetLastErrorCode()); |
| 139 | |
Christopher Ferris | b9de87f | 2017-09-20 13:37:24 -0700 | [diff] [blame] | 140 | bool finished; |
Ryan Prichard | 9b8f545 | 2020-09-30 18:31:05 -0700 | [diff] [blame] | 141 | bool is_signal_frame; |
| 142 | ASSERT_FALSE(elf.Step(0, nullptr, nullptr, &finished, &is_signal_frame)); |
Christopher Ferris | d11ed86 | 2019-04-11 19:45:35 -0700 | [diff] [blame] | 143 | EXPECT_EQ(ERROR_INVALID_ELF, elf.GetLastErrorCode()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 144 | } |
| 145 | |
Christopher Ferris | a019665 | 2017-07-18 16:09:20 -0700 | [diff] [blame] | 146 | TEST_F(ElfTest, elf32_invalid_machine) { |
| 147 | Elf elf(memory_); |
| 148 | |
| 149 | InitElf32(EM_PPC); |
| 150 | |
| 151 | ResetLogs(); |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 152 | ASSERT_FALSE(elf.Init()); |
Christopher Ferris | a019665 | 2017-07-18 16:09:20 -0700 | [diff] [blame] | 153 | |
| 154 | ASSERT_EQ("", GetFakeLogBuf()); |
Douglas Leung | 61b1a1a | 2017-11-08 10:53:53 +0100 | [diff] [blame] | 155 | ASSERT_EQ("4 unwind 32 bit elf that is neither arm nor x86 nor mips: e_machine = 20\n\n", |
Christopher Ferris | a019665 | 2017-07-18 16:09:20 -0700 | [diff] [blame] | 156 | GetFakeLogPrint()); |
| 157 | } |
| 158 | |
| 159 | TEST_F(ElfTest, elf64_invalid_machine) { |
| 160 | Elf elf(memory_); |
| 161 | |
| 162 | InitElf64(EM_PPC64); |
| 163 | |
| 164 | ResetLogs(); |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 165 | ASSERT_FALSE(elf.Init()); |
Christopher Ferris | a019665 | 2017-07-18 16:09:20 -0700 | [diff] [blame] | 166 | |
| 167 | ASSERT_EQ("", GetFakeLogBuf()); |
Douglas Leung | 61b1a1a | 2017-11-08 10:53:53 +0100 | [diff] [blame] | 168 | ASSERT_EQ("4 unwind 64 bit elf that is neither aarch64 nor x86_64 nor mips64: e_machine = 21\n\n", |
Christopher Ferris | a019665 | 2017-07-18 16:09:20 -0700 | [diff] [blame] | 169 | GetFakeLogPrint()); |
| 170 | } |
| 171 | |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 172 | TEST_F(ElfTest, elf_arm) { |
| 173 | Elf elf(memory_); |
| 174 | |
| 175 | InitElf32(EM_ARM); |
| 176 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 177 | ASSERT_TRUE(elf.Init()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 178 | ASSERT_TRUE(elf.valid()); |
| 179 | ASSERT_EQ(static_cast<uint32_t>(EM_ARM), elf.machine_type()); |
| 180 | ASSERT_EQ(ELFCLASS32, elf.class_type()); |
| 181 | ASSERT_TRUE(elf.interface() != nullptr); |
| 182 | } |
| 183 | |
Douglas Leung | 61b1a1a | 2017-11-08 10:53:53 +0100 | [diff] [blame] | 184 | TEST_F(ElfTest, elf_mips) { |
| 185 | Elf elf(memory_); |
| 186 | |
| 187 | InitElf32(EM_MIPS); |
| 188 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 189 | ASSERT_TRUE(elf.Init()); |
Douglas Leung | 61b1a1a | 2017-11-08 10:53:53 +0100 | [diff] [blame] | 190 | ASSERT_TRUE(elf.valid()); |
| 191 | ASSERT_EQ(static_cast<uint32_t>(EM_MIPS), elf.machine_type()); |
| 192 | ASSERT_EQ(ELFCLASS32, elf.class_type()); |
| 193 | ASSERT_TRUE(elf.interface() != nullptr); |
| 194 | } |
| 195 | |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 196 | TEST_F(ElfTest, elf_x86) { |
| 197 | Elf elf(memory_); |
| 198 | |
| 199 | InitElf32(EM_386); |
| 200 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 201 | ASSERT_TRUE(elf.Init()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 202 | ASSERT_TRUE(elf.valid()); |
| 203 | ASSERT_EQ(static_cast<uint32_t>(EM_386), elf.machine_type()); |
| 204 | ASSERT_EQ(ELFCLASS32, elf.class_type()); |
| 205 | ASSERT_TRUE(elf.interface() != nullptr); |
| 206 | } |
| 207 | |
| 208 | TEST_F(ElfTest, elf_arm64) { |
| 209 | Elf elf(memory_); |
| 210 | |
| 211 | InitElf64(EM_AARCH64); |
| 212 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 213 | ASSERT_TRUE(elf.Init()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 214 | ASSERT_TRUE(elf.valid()); |
| 215 | ASSERT_EQ(static_cast<uint32_t>(EM_AARCH64), elf.machine_type()); |
| 216 | ASSERT_EQ(ELFCLASS64, elf.class_type()); |
| 217 | ASSERT_TRUE(elf.interface() != nullptr); |
| 218 | } |
| 219 | |
| 220 | TEST_F(ElfTest, elf_x86_64) { |
| 221 | Elf elf(memory_); |
| 222 | |
| 223 | InitElf64(EM_X86_64); |
| 224 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 225 | ASSERT_TRUE(elf.Init()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 226 | ASSERT_TRUE(elf.valid()); |
| 227 | ASSERT_EQ(static_cast<uint32_t>(EM_X86_64), elf.machine_type()); |
| 228 | ASSERT_EQ(ELFCLASS64, elf.class_type()); |
| 229 | ASSERT_TRUE(elf.interface() != nullptr); |
| 230 | } |
Christopher Ferris | bae69f1 | 2017-06-28 14:51:54 -0700 | [diff] [blame] | 231 | |
Douglas Leung | 61b1a1a | 2017-11-08 10:53:53 +0100 | [diff] [blame] | 232 | TEST_F(ElfTest, elf_mips64) { |
| 233 | Elf elf(memory_); |
| 234 | |
| 235 | InitElf64(EM_MIPS); |
| 236 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 237 | ASSERT_TRUE(elf.Init()); |
Douglas Leung | 61b1a1a | 2017-11-08 10:53:53 +0100 | [diff] [blame] | 238 | ASSERT_TRUE(elf.valid()); |
| 239 | ASSERT_EQ(static_cast<uint32_t>(EM_MIPS), elf.machine_type()); |
| 240 | ASSERT_EQ(ELFCLASS64, elf.class_type()); |
| 241 | ASSERT_TRUE(elf.interface() != nullptr); |
| 242 | } |
| 243 | |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 244 | TEST_F(ElfTest, gnu_debugdata_init32) { |
| 245 | TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(ELFCLASS32, EM_ARM, true, |
| 246 | [&](uint64_t offset, const void* ptr, size_t size) { |
| 247 | memory_->SetMemory(offset, ptr, size); |
| 248 | }); |
| 249 | |
| 250 | Elf elf(memory_); |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 251 | ASSERT_TRUE(elf.Init()); |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 252 | ASSERT_TRUE(elf.interface() != nullptr); |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 253 | ASSERT_TRUE(elf.gnu_debugdata_interface() != nullptr); |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 254 | EXPECT_EQ(0x1acU, elf.interface()->gnu_debugdata_offset()); |
| 255 | EXPECT_EQ(0x8cU, elf.interface()->gnu_debugdata_size()); |
Christopher Ferris | bae69f1 | 2017-06-28 14:51:54 -0700 | [diff] [blame] | 256 | } |
| 257 | |
Christopher Ferris | bae69f1 | 2017-06-28 14:51:54 -0700 | [diff] [blame] | 258 | TEST_F(ElfTest, gnu_debugdata_init64) { |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 259 | TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(ELFCLASS64, EM_AARCH64, true, |
| 260 | [&](uint64_t offset, const void* ptr, size_t size) { |
| 261 | memory_->SetMemory(offset, ptr, size); |
| 262 | }); |
Christopher Ferris | bae69f1 | 2017-06-28 14:51:54 -0700 | [diff] [blame] | 263 | |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 264 | Elf elf(memory_); |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 265 | ASSERT_TRUE(elf.Init()); |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 266 | ASSERT_TRUE(elf.interface() != nullptr); |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 267 | ASSERT_TRUE(elf.gnu_debugdata_interface() != nullptr); |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 268 | EXPECT_EQ(0x200U, elf.interface()->gnu_debugdata_offset()); |
| 269 | EXPECT_EQ(0x90U, elf.interface()->gnu_debugdata_size()); |
Christopher Ferris | bae69f1 | 2017-06-28 14:51:54 -0700 | [diff] [blame] | 270 | } |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 271 | |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 272 | TEST_F(ElfTest, rel_pc) { |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 273 | ElfFake elf(memory_); |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 274 | |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 275 | ElfInterfaceFake* interface = new ElfInterfaceFake(memory_); |
| 276 | elf.FakeSetInterface(interface); |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 277 | |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 278 | elf.FakeSetValid(true); |
Christopher Ferris | 0f40a05 | 2020-01-22 12:17:06 -0800 | [diff] [blame] | 279 | MapInfo map_info(nullptr, nullptr, 0x1000, 0x2000, 0, 0, ""); |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 280 | |
| 281 | ASSERT_EQ(0x101U, elf.GetRelPc(0x1101, &map_info)); |
| 282 | |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 283 | elf.FakeSetValid(false); |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 284 | ASSERT_EQ(0x101U, elf.GetRelPc(0x1101, &map_info)); |
| 285 | } |
| 286 | |
Christopher Ferris | f0c82e7 | 2019-12-04 13:37:11 -0800 | [diff] [blame] | 287 | void ElfTest::VerifyStepIfSignalHandler(uint64_t load_bias) { |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 288 | ElfFake elf(memory_); |
| 289 | |
| 290 | RegsArm regs; |
| 291 | regs[13] = 0x50000; |
| 292 | regs[15] = 0x8000; |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 293 | |
| 294 | ElfInterfaceFake* interface = new ElfInterfaceFake(memory_); |
| 295 | elf.FakeSetInterface(interface); |
Christopher Ferris | f0c82e7 | 2019-12-04 13:37:11 -0800 | [diff] [blame] | 296 | elf.FakeSetLoadBias(load_bias); |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 297 | |
| 298 | memory_->SetData32(0x3000, 0xdf0027ad); |
| 299 | MemoryFake process_memory; |
| 300 | process_memory.SetData32(0x50000, 0); |
| 301 | for (size_t i = 0; i < 16; i++) { |
| 302 | process_memory.SetData32(0x500a0 + i * sizeof(uint32_t), i); |
| 303 | } |
| 304 | |
| 305 | elf.FakeSetValid(true); |
Christopher Ferris | f0c82e7 | 2019-12-04 13:37:11 -0800 | [diff] [blame] | 306 | ASSERT_TRUE(elf.StepIfSignalHandler(0x3000 + load_bias, ®s, &process_memory)); |
Christopher Ferris | d11ed86 | 2019-04-11 19:45:35 -0700 | [diff] [blame] | 307 | EXPECT_EQ(ERROR_NONE, elf.GetLastErrorCode()); |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 308 | EXPECT_EQ(15U, regs.pc()); |
| 309 | EXPECT_EQ(13U, regs.sp()); |
| 310 | } |
| 311 | |
Christopher Ferris | f0c82e7 | 2019-12-04 13:37:11 -0800 | [diff] [blame] | 312 | TEST_F(ElfTest, step_in_signal_map) { |
| 313 | VerifyStepIfSignalHandler(0); |
| 314 | } |
| 315 | |
| 316 | TEST_F(ElfTest, step_in_signal_map_non_zero_load_bias) { |
| 317 | VerifyStepIfSignalHandler(0x1000); |
| 318 | } |
| 319 | |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 320 | class ElfInterfaceMock : public ElfInterface { |
| 321 | public: |
| 322 | ElfInterfaceMock(Memory* memory) : ElfInterface(memory) {} |
| 323 | virtual ~ElfInterfaceMock() = default; |
| 324 | |
Christopher Ferris | 819f131 | 2019-10-03 13:35:48 -0700 | [diff] [blame] | 325 | bool Init(int64_t*) override { return false; } |
| 326 | void InitHeaders() override {} |
Christopher Ferris | 02a6c44 | 2019-03-11 14:43:33 -0700 | [diff] [blame] | 327 | std::string GetSoname() override { return ""; } |
Christopher Ferris | 4cc36d2 | 2018-06-06 14:47:31 -0700 | [diff] [blame] | 328 | bool GetFunctionName(uint64_t, std::string*, uint64_t*) override { return false; } |
Christopher Ferris | bf373ed | 2019-01-16 17:23:39 -0800 | [diff] [blame] | 329 | std::string GetBuildID() override { return ""; } |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 330 | |
Ryan Prichard | 9b8f545 | 2020-09-30 18:31:05 -0700 | [diff] [blame] | 331 | MOCK_METHOD(bool, Step, (uint64_t, Regs*, Memory*, bool*, bool*), (override)); |
Christopher Ferris | baf058b | 2019-10-11 14:26:55 -0700 | [diff] [blame] | 332 | MOCK_METHOD(bool, GetGlobalVariable, (const std::string&, uint64_t*), (override)); |
| 333 | MOCK_METHOD(bool, IsValidPc, (uint64_t), (override)); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 334 | |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 335 | void MockSetDataOffset(uint64_t offset) { data_offset_ = offset; } |
| 336 | void MockSetDataVaddrStart(uint64_t vaddr) { data_vaddr_start_ = vaddr; } |
| 337 | void MockSetDataVaddrEnd(uint64_t vaddr) { data_vaddr_end_ = vaddr; } |
| 338 | |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 339 | void MockSetDynamicOffset(uint64_t offset) { dynamic_offset_ = offset; } |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 340 | void MockSetDynamicVaddrStart(uint64_t vaddr) { dynamic_vaddr_start_ = vaddr; } |
| 341 | void MockSetDynamicVaddrEnd(uint64_t vaddr) { dynamic_vaddr_end_ = vaddr; } |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 342 | }; |
| 343 | |
| 344 | TEST_F(ElfTest, step_in_interface) { |
| 345 | ElfFake elf(memory_); |
| 346 | elf.FakeSetValid(true); |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 347 | |
| 348 | RegsArm regs; |
| 349 | |
| 350 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 351 | elf.FakeSetInterface(interface); |
| 352 | MemoryFake process_memory; |
| 353 | |
| 354 | bool finished; |
Ryan Prichard | 9b8f545 | 2020-09-30 18:31:05 -0700 | [diff] [blame] | 355 | bool is_signal_frame; |
| 356 | EXPECT_CALL(*interface, Step(0x1000, ®s, &process_memory, &finished, &is_signal_frame)) |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 357 | .WillOnce(::testing::Return(true)); |
| 358 | |
Ryan Prichard | 9b8f545 | 2020-09-30 18:31:05 -0700 | [diff] [blame] | 359 | ASSERT_TRUE(elf.Step(0x1000, ®s, &process_memory, &finished, &is_signal_frame)); |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 360 | } |
| 361 | |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 362 | TEST_F(ElfTest, get_global_invalid_elf) { |
| 363 | ElfFake elf(memory_); |
| 364 | elf.FakeSetValid(false); |
| 365 | |
| 366 | std::string global("something"); |
| 367 | uint64_t offset; |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 368 | ASSERT_FALSE(elf.GetGlobalVariableOffset(global, &offset)); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 369 | } |
| 370 | |
| 371 | TEST_F(ElfTest, get_global_valid_not_in_interface) { |
| 372 | ElfFake elf(memory_); |
| 373 | elf.FakeSetValid(true); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 374 | |
| 375 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 376 | elf.FakeSetInterface(interface); |
| 377 | |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 378 | std::string global("something"); |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 379 | EXPECT_CALL(*interface, GetGlobalVariable(global, ::testing::_)) |
| 380 | .WillOnce(::testing::Return(false)); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 381 | |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 382 | uint64_t offset; |
| 383 | ASSERT_FALSE(elf.GetGlobalVariableOffset(global, &offset)); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 384 | } |
| 385 | |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 386 | TEST_F(ElfTest, get_global_vaddr_in_no_sections) { |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 387 | ElfFake elf(memory_); |
| 388 | elf.FakeSetValid(true); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 389 | |
| 390 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 391 | elf.FakeSetInterface(interface); |
| 392 | |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 393 | std::string global("something"); |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 394 | EXPECT_CALL(*interface, GetGlobalVariable(global, ::testing::_)) |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 395 | .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x300), ::testing::Return(true))); |
| 396 | |
Christopher Ferris | 4cc36d2 | 2018-06-06 14:47:31 -0700 | [diff] [blame] | 397 | uint64_t offset; |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 398 | ASSERT_FALSE(elf.GetGlobalVariableOffset(global, &offset)); |
Christopher Ferris | 4cc36d2 | 2018-06-06 14:47:31 -0700 | [diff] [blame] | 399 | } |
| 400 | |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 401 | TEST_F(ElfTest, get_global_vaddr_in_data_section) { |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 402 | ElfFake elf(memory_); |
| 403 | elf.FakeSetValid(true); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 404 | |
| 405 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 406 | elf.FakeSetInterface(interface); |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 407 | interface->MockSetDataVaddrStart(0x500); |
| 408 | interface->MockSetDataVaddrEnd(0x600); |
| 409 | interface->MockSetDataOffset(0xa000); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 410 | |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 411 | std::string global("something"); |
| 412 | EXPECT_CALL(*interface, GetGlobalVariable(global, ::testing::_)) |
| 413 | .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x580), ::testing::Return(true))); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 414 | |
| 415 | uint64_t offset; |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 416 | ASSERT_TRUE(elf.GetGlobalVariableOffset(global, &offset)); |
| 417 | EXPECT_EQ(0xa080U, offset); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 418 | } |
| 419 | |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 420 | TEST_F(ElfTest, get_global_vaddr_in_dynamic_section) { |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 421 | ElfFake elf(memory_); |
| 422 | elf.FakeSetValid(true); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 423 | |
| 424 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 425 | elf.FakeSetInterface(interface); |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 426 | interface->MockSetDataVaddrStart(0x500); |
| 427 | interface->MockSetDataVaddrEnd(0x600); |
| 428 | interface->MockSetDataOffset(0xa000); |
| 429 | |
| 430 | interface->MockSetDynamicVaddrStart(0x800); |
| 431 | interface->MockSetDynamicVaddrEnd(0x900); |
| 432 | interface->MockSetDynamicOffset(0xc000); |
| 433 | |
| 434 | std::string global("something"); |
| 435 | EXPECT_CALL(*interface, GetGlobalVariable(global, ::testing::_)) |
| 436 | .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x880), ::testing::Return(true))); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 437 | |
| 438 | uint64_t offset; |
Christopher Ferris | df683b7 | 2019-12-03 17:13:49 -0800 | [diff] [blame] | 439 | ASSERT_TRUE(elf.GetGlobalVariableOffset(global, &offset)); |
| 440 | EXPECT_EQ(0xc080U, offset); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 441 | } |
| 442 | |
Yong Li | fbca300 | 2020-04-23 20:40:29 +0000 | [diff] [blame] | 443 | TEST_F(ElfTest, get_global_vaddr_with_tagged_pointer) { |
| 444 | ElfFake elf(memory_); |
| 445 | elf.FakeSetValid(true); |
| 446 | elf.FakeSetArch(ARCH_ARM64); |
| 447 | |
| 448 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 449 | elf.FakeSetInterface(interface); |
| 450 | interface->MockSetDataVaddrStart(0x500); |
| 451 | interface->MockSetDataVaddrEnd(0x600); |
| 452 | interface->MockSetDataOffset(0xa000); |
| 453 | |
| 454 | std::string global("something"); |
| 455 | EXPECT_CALL(*interface, GetGlobalVariable(global, ::testing::_)) |
| 456 | .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x8800000000000580), |
| 457 | ::testing::Return(true))); |
| 458 | |
| 459 | uint64_t offset; |
| 460 | ASSERT_TRUE(elf.GetGlobalVariableOffset(global, &offset)); |
| 461 | EXPECT_EQ(0xa080U, offset); |
| 462 | } |
| 463 | |
| 464 | TEST_F(ElfTest, get_global_vaddr_without_tagged_pointer) { |
| 465 | ElfFake elf(memory_); |
| 466 | elf.FakeSetValid(true); |
| 467 | elf.FakeSetArch(ARCH_X86_64); |
| 468 | |
| 469 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 470 | elf.FakeSetInterface(interface); |
| 471 | interface->MockSetDataVaddrStart(0x8800000000000500); |
| 472 | interface->MockSetDataVaddrEnd(0x8800000000000600); |
| 473 | interface->MockSetDataOffset(0x880000000000a000); |
| 474 | |
| 475 | std::string global("something"); |
| 476 | EXPECT_CALL(*interface, GetGlobalVariable(global, ::testing::_)) |
| 477 | .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x8800000000000580), |
| 478 | ::testing::Return(true))); |
| 479 | |
| 480 | uint64_t offset; |
| 481 | ASSERT_TRUE(elf.GetGlobalVariableOffset(global, &offset)); |
| 482 | EXPECT_EQ(0x880000000000a080U, offset); |
| 483 | } |
| 484 | |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 485 | TEST_F(ElfTest, is_valid_pc_elf_invalid) { |
| 486 | ElfFake elf(memory_); |
| 487 | elf.FakeSetValid(false); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 488 | |
| 489 | EXPECT_FALSE(elf.IsValidPc(0x100)); |
| 490 | EXPECT_FALSE(elf.IsValidPc(0x200)); |
| 491 | } |
| 492 | |
| 493 | TEST_F(ElfTest, is_valid_pc_interface) { |
| 494 | ElfFake elf(memory_); |
| 495 | elf.FakeSetValid(true); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 496 | |
| 497 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 498 | elf.FakeSetInterface(interface); |
| 499 | |
| 500 | EXPECT_CALL(*interface, IsValidPc(0x1500)).WillOnce(::testing::Return(true)); |
| 501 | |
| 502 | EXPECT_TRUE(elf.IsValidPc(0x1500)); |
| 503 | } |
| 504 | |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 505 | TEST_F(ElfTest, is_valid_pc_from_gnu_debugdata) { |
| 506 | ElfFake elf(memory_); |
| 507 | elf.FakeSetValid(true); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 508 | |
| 509 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 510 | elf.FakeSetInterface(interface); |
| 511 | ElfInterfaceMock* gnu_interface = new ElfInterfaceMock(memory_); |
| 512 | elf.FakeSetGnuDebugdataInterface(gnu_interface); |
| 513 | |
| 514 | EXPECT_CALL(*interface, IsValidPc(0x1500)).WillOnce(::testing::Return(false)); |
| 515 | EXPECT_CALL(*gnu_interface, IsValidPc(0x1500)).WillOnce(::testing::Return(true)); |
| 516 | |
| 517 | EXPECT_TRUE(elf.IsValidPc(0x1500)); |
| 518 | } |
| 519 | |
Christopher Ferris | 2fcf4cf | 2018-01-23 17:52:23 -0800 | [diff] [blame] | 520 | TEST_F(ElfTest, error_code_not_valid) { |
| 521 | ElfFake elf(memory_); |
| 522 | elf.FakeSetValid(false); |
| 523 | |
| 524 | ErrorData error{ERROR_MEMORY_INVALID, 0x100}; |
| 525 | elf.GetLastError(&error); |
| 526 | EXPECT_EQ(ERROR_MEMORY_INVALID, error.code); |
| 527 | EXPECT_EQ(0x100U, error.address); |
| 528 | } |
| 529 | |
| 530 | TEST_F(ElfTest, error_code_valid) { |
| 531 | ElfFake elf(memory_); |
| 532 | elf.FakeSetValid(true); |
| 533 | ElfInterfaceFake* interface = new ElfInterfaceFake(memory_); |
| 534 | elf.FakeSetInterface(interface); |
| 535 | interface->FakeSetErrorCode(ERROR_MEMORY_INVALID); |
| 536 | interface->FakeSetErrorAddress(0x1000); |
| 537 | |
| 538 | ErrorData error{ERROR_NONE, 0}; |
| 539 | elf.GetLastError(&error); |
| 540 | EXPECT_EQ(ERROR_MEMORY_INVALID, error.code); |
| 541 | EXPECT_EQ(0x1000U, error.address); |
| 542 | EXPECT_EQ(ERROR_MEMORY_INVALID, elf.GetLastErrorCode()); |
| 543 | EXPECT_EQ(0x1000U, elf.GetLastErrorAddress()); |
| 544 | } |
| 545 | |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 546 | } // namespace unwindstack |