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 | |
| 107 | MemoryFake* memory_; |
| 108 | }; |
| 109 | |
| 110 | TEST_F(ElfTest, invalid_memory) { |
| 111 | Elf elf(memory_); |
| 112 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 113 | ASSERT_FALSE(elf.Init()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 114 | ASSERT_FALSE(elf.valid()); |
| 115 | } |
| 116 | |
| 117 | TEST_F(ElfTest, elf_invalid) { |
| 118 | Elf elf(memory_); |
| 119 | |
| 120 | InitElf32(EM_386); |
| 121 | |
| 122 | // Corrupt the ELF signature. |
| 123 | memory_->SetData32(0, 0x7f000000); |
| 124 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 125 | ASSERT_FALSE(elf.Init()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 126 | ASSERT_FALSE(elf.valid()); |
| 127 | ASSERT_TRUE(elf.interface() == nullptr); |
| 128 | |
Christopher Ferris | 02a6c44 | 2019-03-11 14:43:33 -0700 | [diff] [blame] | 129 | ASSERT_EQ("", elf.GetSoname()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 130 | |
Christopher Ferris | 02a6c44 | 2019-03-11 14:43:33 -0700 | [diff] [blame] | 131 | std::string name; |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 132 | uint64_t func_offset; |
| 133 | ASSERT_FALSE(elf.GetFunctionName(0, &name, &func_offset)); |
| 134 | |
Christopher Ferris | d11ed86 | 2019-04-11 19:45:35 -0700 | [diff] [blame] | 135 | ASSERT_FALSE(elf.StepIfSignalHandler(0, nullptr, nullptr)); |
| 136 | EXPECT_EQ(ERROR_INVALID_ELF, elf.GetLastErrorCode()); |
| 137 | |
Christopher Ferris | b9de87f | 2017-09-20 13:37:24 -0700 | [diff] [blame] | 138 | bool finished; |
Christopher Ferris | d11ed86 | 2019-04-11 19:45:35 -0700 | [diff] [blame] | 139 | ASSERT_FALSE(elf.Step(0, nullptr, nullptr, &finished)); |
| 140 | EXPECT_EQ(ERROR_INVALID_ELF, elf.GetLastErrorCode()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 141 | } |
| 142 | |
Christopher Ferris | a019665 | 2017-07-18 16:09:20 -0700 | [diff] [blame] | 143 | TEST_F(ElfTest, elf32_invalid_machine) { |
| 144 | Elf elf(memory_); |
| 145 | |
| 146 | InitElf32(EM_PPC); |
| 147 | |
| 148 | ResetLogs(); |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 149 | ASSERT_FALSE(elf.Init()); |
Christopher Ferris | a019665 | 2017-07-18 16:09:20 -0700 | [diff] [blame] | 150 | |
| 151 | ASSERT_EQ("", GetFakeLogBuf()); |
Douglas Leung | 61b1a1a | 2017-11-08 10:53:53 +0100 | [diff] [blame] | 152 | 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] | 153 | GetFakeLogPrint()); |
| 154 | } |
| 155 | |
| 156 | TEST_F(ElfTest, elf64_invalid_machine) { |
| 157 | Elf elf(memory_); |
| 158 | |
| 159 | InitElf64(EM_PPC64); |
| 160 | |
| 161 | ResetLogs(); |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 162 | ASSERT_FALSE(elf.Init()); |
Christopher Ferris | a019665 | 2017-07-18 16:09:20 -0700 | [diff] [blame] | 163 | |
| 164 | ASSERT_EQ("", GetFakeLogBuf()); |
Douglas Leung | 61b1a1a | 2017-11-08 10:53:53 +0100 | [diff] [blame] | 165 | 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] | 166 | GetFakeLogPrint()); |
| 167 | } |
| 168 | |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 169 | TEST_F(ElfTest, elf_arm) { |
| 170 | Elf elf(memory_); |
| 171 | |
| 172 | InitElf32(EM_ARM); |
| 173 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 174 | ASSERT_TRUE(elf.Init()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 175 | ASSERT_TRUE(elf.valid()); |
| 176 | ASSERT_EQ(static_cast<uint32_t>(EM_ARM), elf.machine_type()); |
| 177 | ASSERT_EQ(ELFCLASS32, elf.class_type()); |
| 178 | ASSERT_TRUE(elf.interface() != nullptr); |
| 179 | } |
| 180 | |
Douglas Leung | 61b1a1a | 2017-11-08 10:53:53 +0100 | [diff] [blame] | 181 | TEST_F(ElfTest, elf_mips) { |
| 182 | Elf elf(memory_); |
| 183 | |
| 184 | InitElf32(EM_MIPS); |
| 185 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 186 | ASSERT_TRUE(elf.Init()); |
Douglas Leung | 61b1a1a | 2017-11-08 10:53:53 +0100 | [diff] [blame] | 187 | ASSERT_TRUE(elf.valid()); |
| 188 | ASSERT_EQ(static_cast<uint32_t>(EM_MIPS), elf.machine_type()); |
| 189 | ASSERT_EQ(ELFCLASS32, elf.class_type()); |
| 190 | ASSERT_TRUE(elf.interface() != nullptr); |
| 191 | } |
| 192 | |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 193 | TEST_F(ElfTest, elf_x86) { |
| 194 | Elf elf(memory_); |
| 195 | |
| 196 | InitElf32(EM_386); |
| 197 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 198 | ASSERT_TRUE(elf.Init()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 199 | ASSERT_TRUE(elf.valid()); |
| 200 | ASSERT_EQ(static_cast<uint32_t>(EM_386), elf.machine_type()); |
| 201 | ASSERT_EQ(ELFCLASS32, elf.class_type()); |
| 202 | ASSERT_TRUE(elf.interface() != nullptr); |
| 203 | } |
| 204 | |
| 205 | TEST_F(ElfTest, elf_arm64) { |
| 206 | Elf elf(memory_); |
| 207 | |
| 208 | InitElf64(EM_AARCH64); |
| 209 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 210 | ASSERT_TRUE(elf.Init()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 211 | ASSERT_TRUE(elf.valid()); |
| 212 | ASSERT_EQ(static_cast<uint32_t>(EM_AARCH64), elf.machine_type()); |
| 213 | ASSERT_EQ(ELFCLASS64, elf.class_type()); |
| 214 | ASSERT_TRUE(elf.interface() != nullptr); |
| 215 | } |
| 216 | |
| 217 | TEST_F(ElfTest, elf_x86_64) { |
| 218 | Elf elf(memory_); |
| 219 | |
| 220 | InitElf64(EM_X86_64); |
| 221 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 222 | ASSERT_TRUE(elf.Init()); |
Christopher Ferris | 3958f80 | 2017-02-01 15:44:40 -0800 | [diff] [blame] | 223 | ASSERT_TRUE(elf.valid()); |
| 224 | ASSERT_EQ(static_cast<uint32_t>(EM_X86_64), elf.machine_type()); |
| 225 | ASSERT_EQ(ELFCLASS64, elf.class_type()); |
| 226 | ASSERT_TRUE(elf.interface() != nullptr); |
| 227 | } |
Christopher Ferris | bae69f1 | 2017-06-28 14:51:54 -0700 | [diff] [blame] | 228 | |
Douglas Leung | 61b1a1a | 2017-11-08 10:53:53 +0100 | [diff] [blame] | 229 | TEST_F(ElfTest, elf_mips64) { |
| 230 | Elf elf(memory_); |
| 231 | |
| 232 | InitElf64(EM_MIPS); |
| 233 | |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 234 | ASSERT_TRUE(elf.Init()); |
Douglas Leung | 61b1a1a | 2017-11-08 10:53:53 +0100 | [diff] [blame] | 235 | ASSERT_TRUE(elf.valid()); |
| 236 | ASSERT_EQ(static_cast<uint32_t>(EM_MIPS), elf.machine_type()); |
| 237 | ASSERT_EQ(ELFCLASS64, elf.class_type()); |
| 238 | ASSERT_TRUE(elf.interface() != nullptr); |
| 239 | } |
| 240 | |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 241 | TEST_F(ElfTest, gnu_debugdata_init32) { |
| 242 | TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(ELFCLASS32, EM_ARM, true, |
| 243 | [&](uint64_t offset, const void* ptr, size_t size) { |
| 244 | memory_->SetMemory(offset, ptr, size); |
| 245 | }); |
| 246 | |
| 247 | Elf elf(memory_); |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 248 | ASSERT_TRUE(elf.Init()); |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 249 | ASSERT_TRUE(elf.interface() != nullptr); |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 250 | ASSERT_TRUE(elf.gnu_debugdata_interface() != nullptr); |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 251 | EXPECT_EQ(0x1acU, elf.interface()->gnu_debugdata_offset()); |
| 252 | EXPECT_EQ(0x8cU, elf.interface()->gnu_debugdata_size()); |
Christopher Ferris | bae69f1 | 2017-06-28 14:51:54 -0700 | [diff] [blame] | 253 | } |
| 254 | |
Christopher Ferris | bae69f1 | 2017-06-28 14:51:54 -0700 | [diff] [blame] | 255 | TEST_F(ElfTest, gnu_debugdata_init64) { |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 256 | TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(ELFCLASS64, EM_AARCH64, true, |
| 257 | [&](uint64_t offset, const void* ptr, size_t size) { |
| 258 | memory_->SetMemory(offset, ptr, size); |
| 259 | }); |
Christopher Ferris | bae69f1 | 2017-06-28 14:51:54 -0700 | [diff] [blame] | 260 | |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 261 | Elf elf(memory_); |
Christopher Ferris | e8c4ecf | 2018-10-23 12:04:26 -0700 | [diff] [blame] | 262 | ASSERT_TRUE(elf.Init()); |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 263 | ASSERT_TRUE(elf.interface() != nullptr); |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 264 | ASSERT_TRUE(elf.gnu_debugdata_interface() != nullptr); |
Christopher Ferris | 570b76f | 2017-06-30 17:18:16 -0700 | [diff] [blame] | 265 | EXPECT_EQ(0x200U, elf.interface()->gnu_debugdata_offset()); |
| 266 | EXPECT_EQ(0x90U, elf.interface()->gnu_debugdata_size()); |
Christopher Ferris | bae69f1 | 2017-06-28 14:51:54 -0700 | [diff] [blame] | 267 | } |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 268 | |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 269 | TEST_F(ElfTest, rel_pc) { |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 270 | ElfFake elf(memory_); |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 271 | |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 272 | ElfInterfaceFake* interface = new ElfInterfaceFake(memory_); |
| 273 | elf.FakeSetInterface(interface); |
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 | elf.FakeSetValid(true); |
Christopher Ferris | a09c4a6 | 2018-12-13 16:08:50 -0800 | [diff] [blame] | 276 | MapInfo map_info(nullptr, 0x1000, 0x2000, 0, 0, ""); |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 277 | |
| 278 | ASSERT_EQ(0x101U, elf.GetRelPc(0x1101, &map_info)); |
| 279 | |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 280 | elf.FakeSetValid(false); |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 281 | ASSERT_EQ(0x101U, elf.GetRelPc(0x1101, &map_info)); |
| 282 | } |
| 283 | |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 284 | TEST_F(ElfTest, step_in_signal_map) { |
| 285 | ElfFake elf(memory_); |
| 286 | |
| 287 | RegsArm regs; |
| 288 | regs[13] = 0x50000; |
| 289 | regs[15] = 0x8000; |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 290 | |
| 291 | ElfInterfaceFake* interface = new ElfInterfaceFake(memory_); |
| 292 | elf.FakeSetInterface(interface); |
| 293 | |
| 294 | memory_->SetData32(0x3000, 0xdf0027ad); |
| 295 | MemoryFake process_memory; |
| 296 | process_memory.SetData32(0x50000, 0); |
| 297 | for (size_t i = 0; i < 16; i++) { |
| 298 | process_memory.SetData32(0x500a0 + i * sizeof(uint32_t), i); |
| 299 | } |
| 300 | |
| 301 | elf.FakeSetValid(true); |
Christopher Ferris | d11ed86 | 2019-04-11 19:45:35 -0700 | [diff] [blame] | 302 | ASSERT_TRUE(elf.StepIfSignalHandler(0x3000, ®s, &process_memory)); |
| 303 | EXPECT_EQ(ERROR_NONE, elf.GetLastErrorCode()); |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 304 | EXPECT_EQ(15U, regs.pc()); |
| 305 | EXPECT_EQ(13U, regs.sp()); |
| 306 | } |
| 307 | |
| 308 | class ElfInterfaceMock : public ElfInterface { |
| 309 | public: |
| 310 | ElfInterfaceMock(Memory* memory) : ElfInterface(memory) {} |
| 311 | virtual ~ElfInterfaceMock() = default; |
| 312 | |
| 313 | bool Init(uint64_t*) override { return false; } |
Christopher Ferris | 4cc36d2 | 2018-06-06 14:47:31 -0700 | [diff] [blame] | 314 | void InitHeaders(uint64_t) override {} |
Christopher Ferris | 02a6c44 | 2019-03-11 14:43:33 -0700 | [diff] [blame] | 315 | std::string GetSoname() override { return ""; } |
Christopher Ferris | 4cc36d2 | 2018-06-06 14:47:31 -0700 | [diff] [blame] | 316 | bool GetFunctionName(uint64_t, std::string*, uint64_t*) override { return false; } |
Christopher Ferris | bf373ed | 2019-01-16 17:23:39 -0800 | [diff] [blame] | 317 | std::string GetBuildID() override { return ""; } |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 318 | |
Christopher Ferris | 4cc36d2 | 2018-06-06 14:47:31 -0700 | [diff] [blame] | 319 | MOCK_METHOD4(Step, bool(uint64_t, Regs*, Memory*, bool*)); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 320 | MOCK_METHOD2(GetGlobalVariable, bool(const std::string&, uint64_t*)); |
| 321 | MOCK_METHOD1(IsValidPc, bool(uint64_t)); |
| 322 | |
| 323 | void MockSetDynamicOffset(uint64_t offset) { dynamic_offset_ = offset; } |
| 324 | void MockSetDynamicVaddr(uint64_t vaddr) { dynamic_vaddr_ = vaddr; } |
| 325 | void MockSetDynamicSize(uint64_t size) { dynamic_size_ = size; } |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 326 | }; |
| 327 | |
| 328 | TEST_F(ElfTest, step_in_interface) { |
| 329 | ElfFake elf(memory_); |
| 330 | elf.FakeSetValid(true); |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 331 | |
| 332 | RegsArm regs; |
| 333 | |
| 334 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 335 | elf.FakeSetInterface(interface); |
| 336 | MemoryFake process_memory; |
| 337 | |
| 338 | bool finished; |
Christopher Ferris | 4cc36d2 | 2018-06-06 14:47:31 -0700 | [diff] [blame] | 339 | EXPECT_CALL(*interface, Step(0x1000, ®s, &process_memory, &finished)) |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 340 | .WillOnce(::testing::Return(true)); |
| 341 | |
Christopher Ferris | d11ed86 | 2019-04-11 19:45:35 -0700 | [diff] [blame] | 342 | ASSERT_TRUE(elf.Step(0x1000, ®s, &process_memory, &finished)); |
Christopher Ferris | e69f470 | 2017-10-19 16:08:58 -0700 | [diff] [blame] | 343 | } |
| 344 | |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 345 | TEST_F(ElfTest, get_global_invalid_elf) { |
| 346 | ElfFake elf(memory_); |
| 347 | elf.FakeSetValid(false); |
| 348 | |
| 349 | std::string global("something"); |
| 350 | uint64_t offset; |
| 351 | ASSERT_FALSE(elf.GetGlobalVariable(global, &offset)); |
| 352 | } |
| 353 | |
| 354 | TEST_F(ElfTest, get_global_valid_not_in_interface) { |
| 355 | ElfFake elf(memory_); |
| 356 | elf.FakeSetValid(true); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 357 | |
| 358 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 359 | elf.FakeSetInterface(interface); |
| 360 | |
| 361 | uint64_t offset; |
| 362 | std::string global("something"); |
| 363 | EXPECT_CALL(*interface, GetGlobalVariable(global, &offset)).WillOnce(::testing::Return(false)); |
| 364 | |
| 365 | ASSERT_FALSE(elf.GetGlobalVariable(global, &offset)); |
| 366 | } |
| 367 | |
| 368 | TEST_F(ElfTest, get_global_valid_below_load_bias) { |
| 369 | ElfFake elf(memory_); |
| 370 | elf.FakeSetValid(true); |
| 371 | elf.FakeSetLoadBias(0x1000); |
| 372 | |
| 373 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 374 | elf.FakeSetInterface(interface); |
| 375 | |
| 376 | uint64_t offset; |
| 377 | std::string global("something"); |
| 378 | EXPECT_CALL(*interface, GetGlobalVariable(global, &offset)) |
| 379 | .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x300), ::testing::Return(true))); |
| 380 | |
| 381 | ASSERT_FALSE(elf.GetGlobalVariable(global, &offset)); |
| 382 | } |
| 383 | |
Christopher Ferris | 4cc36d2 | 2018-06-06 14:47:31 -0700 | [diff] [blame] | 384 | TEST_F(ElfTest, get_global_valid_dynamic_zero_non_zero_load_bias) { |
| 385 | ElfFake elf(memory_); |
| 386 | elf.FakeSetValid(true); |
| 387 | elf.FakeSetLoadBias(0x100); |
| 388 | |
| 389 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 390 | elf.FakeSetInterface(interface); |
| 391 | |
| 392 | uint64_t offset; |
| 393 | std::string global("something"); |
| 394 | EXPECT_CALL(*interface, GetGlobalVariable(global, &offset)) |
| 395 | .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x300), ::testing::Return(true))); |
| 396 | |
| 397 | ASSERT_TRUE(elf.GetGlobalVariable(global, &offset)); |
| 398 | EXPECT_EQ(0x200U, offset); |
| 399 | } |
| 400 | |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 401 | TEST_F(ElfTest, get_global_valid_dynamic_zero) { |
| 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); |
| 407 | |
| 408 | ElfInterfaceMock* gnu_interface = new ElfInterfaceMock(memory_); |
| 409 | elf.FakeSetGnuDebugdataInterface(gnu_interface); |
| 410 | |
| 411 | uint64_t offset; |
| 412 | std::string global("something"); |
| 413 | EXPECT_CALL(*interface, GetGlobalVariable(global, &offset)).WillOnce(::testing::Return(false)); |
| 414 | |
| 415 | EXPECT_CALL(*gnu_interface, GetGlobalVariable(global, &offset)) |
| 416 | .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x500), ::testing::Return(true))); |
| 417 | |
| 418 | ASSERT_TRUE(elf.GetGlobalVariable(global, &offset)); |
| 419 | EXPECT_EQ(0x500U, offset); |
| 420 | } |
| 421 | |
| 422 | TEST_F(ElfTest, get_global_valid_in_gnu_debugdata_dynamic_zero) { |
| 423 | ElfFake elf(memory_); |
| 424 | elf.FakeSetValid(true); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 425 | |
| 426 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 427 | elf.FakeSetInterface(interface); |
| 428 | |
| 429 | uint64_t offset; |
| 430 | std::string global("something"); |
| 431 | EXPECT_CALL(*interface, GetGlobalVariable(global, &offset)) |
| 432 | .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x300), ::testing::Return(true))); |
| 433 | |
| 434 | ASSERT_TRUE(elf.GetGlobalVariable(global, &offset)); |
| 435 | EXPECT_EQ(0x300U, offset); |
| 436 | } |
| 437 | |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 438 | TEST_F(ElfTest, get_global_valid_dynamic_adjust_negative) { |
| 439 | ElfFake elf(memory_); |
| 440 | elf.FakeSetValid(true); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 441 | |
| 442 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 443 | interface->MockSetDynamicOffset(0x400); |
| 444 | interface->MockSetDynamicVaddr(0x800); |
| 445 | interface->MockSetDynamicSize(0x100); |
| 446 | elf.FakeSetInterface(interface); |
| 447 | |
| 448 | uint64_t offset; |
| 449 | std::string global("something"); |
| 450 | EXPECT_CALL(*interface, GetGlobalVariable(global, &offset)) |
| 451 | .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x850), ::testing::Return(true))); |
| 452 | |
| 453 | ASSERT_TRUE(elf.GetGlobalVariable(global, &offset)); |
| 454 | EXPECT_EQ(0x450U, offset); |
| 455 | } |
| 456 | |
| 457 | TEST_F(ElfTest, get_global_valid_dynamic_adjust_positive) { |
| 458 | ElfFake elf(memory_); |
| 459 | elf.FakeSetValid(true); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 460 | |
| 461 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 462 | interface->MockSetDynamicOffset(0x1000); |
| 463 | interface->MockSetDynamicVaddr(0x800); |
| 464 | interface->MockSetDynamicSize(0x100); |
| 465 | elf.FakeSetInterface(interface); |
| 466 | |
| 467 | uint64_t offset; |
| 468 | std::string global("something"); |
| 469 | EXPECT_CALL(*interface, GetGlobalVariable(global, &offset)) |
| 470 | .WillOnce(::testing::DoAll(::testing::SetArgPointee<1>(0x850), ::testing::Return(true))); |
| 471 | |
| 472 | ASSERT_TRUE(elf.GetGlobalVariable(global, &offset)); |
| 473 | EXPECT_EQ(0x1050U, offset); |
| 474 | } |
| 475 | |
| 476 | TEST_F(ElfTest, is_valid_pc_elf_invalid) { |
| 477 | ElfFake elf(memory_); |
| 478 | elf.FakeSetValid(false); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 479 | |
| 480 | EXPECT_FALSE(elf.IsValidPc(0x100)); |
| 481 | EXPECT_FALSE(elf.IsValidPc(0x200)); |
| 482 | } |
| 483 | |
| 484 | TEST_F(ElfTest, is_valid_pc_interface) { |
| 485 | ElfFake elf(memory_); |
| 486 | elf.FakeSetValid(true); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 487 | |
| 488 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 489 | elf.FakeSetInterface(interface); |
| 490 | |
| 491 | EXPECT_CALL(*interface, IsValidPc(0x1500)).WillOnce(::testing::Return(true)); |
| 492 | |
| 493 | EXPECT_TRUE(elf.IsValidPc(0x1500)); |
| 494 | } |
| 495 | |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 496 | TEST_F(ElfTest, is_valid_pc_from_gnu_debugdata) { |
| 497 | ElfFake elf(memory_); |
| 498 | elf.FakeSetValid(true); |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 499 | |
| 500 | ElfInterfaceMock* interface = new ElfInterfaceMock(memory_); |
| 501 | elf.FakeSetInterface(interface); |
| 502 | ElfInterfaceMock* gnu_interface = new ElfInterfaceMock(memory_); |
| 503 | elf.FakeSetGnuDebugdataInterface(gnu_interface); |
| 504 | |
| 505 | EXPECT_CALL(*interface, IsValidPc(0x1500)).WillOnce(::testing::Return(false)); |
| 506 | EXPECT_CALL(*gnu_interface, IsValidPc(0x1500)).WillOnce(::testing::Return(true)); |
| 507 | |
| 508 | EXPECT_TRUE(elf.IsValidPc(0x1500)); |
| 509 | } |
| 510 | |
Christopher Ferris | 2fcf4cf | 2018-01-23 17:52:23 -0800 | [diff] [blame] | 511 | TEST_F(ElfTest, error_code_not_valid) { |
| 512 | ElfFake elf(memory_); |
| 513 | elf.FakeSetValid(false); |
| 514 | |
| 515 | ErrorData error{ERROR_MEMORY_INVALID, 0x100}; |
| 516 | elf.GetLastError(&error); |
| 517 | EXPECT_EQ(ERROR_MEMORY_INVALID, error.code); |
| 518 | EXPECT_EQ(0x100U, error.address); |
| 519 | } |
| 520 | |
| 521 | TEST_F(ElfTest, error_code_valid) { |
| 522 | ElfFake elf(memory_); |
| 523 | elf.FakeSetValid(true); |
| 524 | ElfInterfaceFake* interface = new ElfInterfaceFake(memory_); |
| 525 | elf.FakeSetInterface(interface); |
| 526 | interface->FakeSetErrorCode(ERROR_MEMORY_INVALID); |
| 527 | interface->FakeSetErrorAddress(0x1000); |
| 528 | |
| 529 | ErrorData error{ERROR_NONE, 0}; |
| 530 | elf.GetLastError(&error); |
| 531 | EXPECT_EQ(ERROR_MEMORY_INVALID, error.code); |
| 532 | EXPECT_EQ(0x1000U, error.address); |
| 533 | EXPECT_EQ(ERROR_MEMORY_INVALID, elf.GetLastErrorCode()); |
| 534 | EXPECT_EQ(0x1000U, elf.GetLastErrorAddress()); |
| 535 | } |
| 536 | |
Christopher Ferris | d226a51 | 2017-07-14 10:37:19 -0700 | [diff] [blame] | 537 | } // namespace unwindstack |