Avi Drissman | e4622aa | 2022-09-08 20:36:06 | [diff] [blame] | 1 | // Copyright 2019 The Chromium Authors |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 5 | #include "base/profiler/chrome_unwinder_android.h" |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 6 | |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 7 | #include "base/memory/aligned_memory.h" |
Charlie Hu | 027f8a1 | 2021-09-23 23:25:19 | [diff] [blame] | 8 | #include "base/profiler/chrome_unwind_info_android.h" |
Leonard Grey | 412c5486 | 2022-02-04 19:37:36 | [diff] [blame] | 9 | #include "base/profiler/stack_sampling_profiler_test_util.h" |
Peter Kasting | 50039f3 | 2022-10-28 16:49:22 | [diff] [blame] | 10 | #include "base/ranges/algorithm.h" |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 11 | #include "base/test/gtest_util.h" |
| 12 | #include "build/build_config.h" |
| 13 | #include "testing/gtest/include/gtest/gtest.h" |
| 14 | |
| 15 | namespace base { |
| 16 | |
| 17 | TEST(ChromeAndroidUnwindInstructionTest, |
| 18 | TestSmallStackPointerIncrementMinValue) { |
| 19 | RegisterContext thread_context = {}; |
| 20 | const uint8_t instruction = 0b00000000; |
| 21 | const uint8_t* current_instruction = &instruction; |
| 22 | thread_context.arm_sp = 0x10000000; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 23 | bool pc_was_updated = false; |
| 24 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 25 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 26 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 27 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 28 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 29 | EXPECT_EQ(0x10000004ul, thread_context.arm_sp); |
| 30 | } |
| 31 | |
| 32 | TEST(ChromeAndroidUnwindInstructionTest, |
| 33 | TestSmallStackPointerIncrementMidValue) { |
| 34 | // xxxxxx = 4; vsp = vsp + (4 << 2) + 4 = vsp + 16 + 4 = vsp + 0x14. |
| 35 | RegisterContext thread_context = {}; |
| 36 | const uint8_t instruction = 0b00000100; |
| 37 | const uint8_t* current_instruction = &instruction; |
| 38 | thread_context.arm_sp = 0x10000000; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 39 | bool pc_was_updated = false; |
| 40 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 41 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 42 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 43 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 44 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 45 | EXPECT_EQ(0x10000014ul, thread_context.arm_sp); |
| 46 | } |
| 47 | |
| 48 | TEST(ChromeAndroidUnwindInstructionTest, |
| 49 | TestSmallStackPointerIncrementMaxValue) { |
| 50 | RegisterContext thread_context = {}; |
| 51 | const uint8_t instruction = 0b00111111; |
| 52 | const uint8_t* current_instruction = &instruction; |
| 53 | thread_context.arm_sp = 0x10000000; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 54 | bool pc_was_updated = false; |
| 55 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 56 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 57 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 58 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 59 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 60 | EXPECT_EQ(0x10000100ul, thread_context.arm_sp); |
| 61 | } |
| 62 | |
| 63 | TEST(ChromeAndroidUnwindInstructionTest, |
| 64 | TestSmallStackPointerIncrementOverflow) { |
| 65 | RegisterContext thread_context = {}; |
| 66 | const uint8_t instruction = 0b00111111; |
| 67 | const uint8_t* current_instruction = &instruction; |
| 68 | thread_context.arm_sp = 0xffffffff; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 69 | bool pc_was_updated = false; |
| 70 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 71 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 72 | UnwindInstructionResult::kAborted); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 73 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 74 | EXPECT_EQ(0xffffffff, thread_context.arm_sp); |
| 75 | } |
| 76 | |
| 77 | TEST(ChromeAndroidUnwindInstructionTest, |
| 78 | TestSmallStackPointerDecrementMinValue) { |
| 79 | RegisterContext thread_context = {}; |
| 80 | const uint8_t instruction = 0b01000000; |
| 81 | const uint8_t* current_instruction = &instruction; |
| 82 | thread_context.arm_sp = 0x10000000; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 83 | bool pc_was_updated = false; |
| 84 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 85 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 86 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 87 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 88 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 89 | EXPECT_EQ(0x0ffffffcul, thread_context.arm_sp); |
| 90 | } |
| 91 | |
| 92 | TEST(ChromeAndroidUnwindInstructionTest, |
| 93 | TestSmallStackPointerDecrementMidValue) { |
| 94 | // xxxxxx = 4; vsp = vsp - (4 << 2) - 4 = vsp - 16 - 4 = vsp - 0x14. |
| 95 | RegisterContext thread_context = {}; |
| 96 | const uint8_t instruction = 0b01000100; |
| 97 | const uint8_t* current_instruction = &instruction; |
| 98 | thread_context.arm_sp = 0x10000000; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 99 | bool pc_was_updated = false; |
| 100 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 101 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 102 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 103 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 104 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 105 | EXPECT_EQ(0x0fffffecul, thread_context.arm_sp); |
| 106 | } |
| 107 | |
| 108 | TEST(ChromeAndroidUnwindInstructionTest, |
| 109 | TestSmallStackPointerDecrementMaxValue) { |
| 110 | RegisterContext thread_context = {}; |
| 111 | const uint8_t instruction = 0b01111111; |
| 112 | const uint8_t* current_instruction = &instruction; |
| 113 | thread_context.arm_sp = 0x10000000; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 114 | bool pc_was_updated = false; |
| 115 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 116 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 117 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 118 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 119 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 120 | EXPECT_EQ(0x0fffff00ul, thread_context.arm_sp); |
| 121 | } |
| 122 | |
| 123 | TEST(ChromeAndroidUnwindInstructionTest, |
| 124 | TestSmallStackPointerDecrementUnderflow) { |
| 125 | RegisterContext thread_context = {}; |
| 126 | const uint8_t instruction = 0b01111111; |
| 127 | const uint8_t* current_instruction = &instruction; |
| 128 | thread_context.arm_sp = 0x00000000; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 129 | bool pc_was_updated = false; |
| 130 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 131 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 132 | UnwindInstructionResult::kAborted); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 133 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 134 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 135 | EXPECT_EQ(0x0ul, thread_context.arm_sp); |
| 136 | } |
| 137 | |
| 138 | using ChromeAndroidUnwindSetStackPointerFromRegisterValueTest = |
| 139 | ::testing::TestWithParam<uint8_t>; |
| 140 | |
| 141 | INSTANTIATE_TEST_SUITE_P( |
| 142 | All, |
| 143 | ChromeAndroidUnwindSetStackPointerFromRegisterValueTest, |
| 144 | // The function should set all registers except |
| 145 | // - callee saved registers (r0, r1, r2, r3) |
| 146 | // - sp (r13) |
| 147 | // - pc (r15) |
| 148 | ::testing::Values(4, 5, 6, 7, 8, 9, 10, 11, 12, 14)); |
| 149 | |
| 150 | TEST_P(ChromeAndroidUnwindSetStackPointerFromRegisterValueTest, |
| 151 | TestSetStackPointerFromRegisterValue) { |
| 152 | const uint8_t register_index = GetParam(); |
| 153 | |
| 154 | RegisterContext thread_context = {}; |
| 155 | thread_context.arm_r0 = 100; |
| 156 | thread_context.arm_r1 = 101; |
| 157 | thread_context.arm_r2 = 102; |
| 158 | thread_context.arm_r3 = 103; |
| 159 | thread_context.arm_r4 = 104; |
| 160 | thread_context.arm_r5 = 105; |
| 161 | thread_context.arm_r6 = 106; |
| 162 | thread_context.arm_r7 = 107; |
| 163 | thread_context.arm_r8 = 108; |
| 164 | thread_context.arm_r9 = 109; |
| 165 | thread_context.arm_r10 = 110; |
| 166 | thread_context.arm_fp = 111; // r11 |
| 167 | thread_context.arm_ip = 112; // r12 |
| 168 | thread_context.arm_lr = 114; // r14 |
| 169 | |
| 170 | const uint8_t instruction = 0b10010000 + register_index; |
| 171 | const uint8_t* current_instruction = &instruction; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 172 | bool pc_was_updated = false; |
| 173 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 174 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 175 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 176 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 177 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 178 | EXPECT_EQ(100ul + register_index, thread_context.arm_sp); |
| 179 | } |
| 180 | |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 181 | TEST(ChromeAndroidUnwindInstructionTest, TestCompleteWithNoPriorPCUpdate) { |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 182 | RegisterContext thread_context = {}; |
| 183 | thread_context.arm_lr = 114; // r14 |
| 184 | thread_context.arm_pc = 115; // r15 |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 185 | const uint8_t instruction = 0b10110000; |
| 186 | const uint8_t* current_instruction = &instruction; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 187 | bool pc_was_updated = false; |
| 188 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 189 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 190 | UnwindInstructionResult::kCompleted); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 191 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 192 | EXPECT_EQ(114ul, thread_context.arm_pc); |
| 193 | } |
| 194 | |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 195 | TEST(ChromeAndroidUnwindInstructionTest, TestCompleteWithPriorPCUpdate) { |
| 196 | RegisterContext thread_context = {}; |
| 197 | thread_context.arm_lr = 114; // r14 |
| 198 | thread_context.arm_pc = 115; // r15 |
| 199 | const uint8_t instruction = 0b10110000; |
| 200 | const uint8_t* current_instruction = &instruction; |
| 201 | bool pc_was_updated = true; |
| 202 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 203 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 204 | UnwindInstructionResult::kCompleted); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 205 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 206 | EXPECT_EQ(115ul, thread_context.arm_pc); |
| 207 | } |
| 208 | |
| 209 | TEST(ChromeAndroidUnwindInstructionTest, |
| 210 | TestPopDiscontinuousRegistersIncludingPC) { |
| 211 | RegisterContext thread_context = {}; |
| 212 | |
| 213 | thread_context.arm_r0 = 100; |
| 214 | thread_context.arm_r1 = 101; |
| 215 | thread_context.arm_r2 = 102; |
| 216 | thread_context.arm_r3 = 103; |
| 217 | thread_context.arm_r4 = 104; |
| 218 | thread_context.arm_r5 = 105; |
| 219 | thread_context.arm_r6 = 106; |
| 220 | thread_context.arm_r7 = 107; |
| 221 | thread_context.arm_r8 = 108; |
| 222 | thread_context.arm_r9 = 109; |
| 223 | thread_context.arm_r10 = 110; |
| 224 | thread_context.arm_fp = 111; |
| 225 | thread_context.arm_ip = 112; |
| 226 | thread_context.arm_lr = 113; |
| 227 | thread_context.arm_pc = 114; |
| 228 | |
| 229 | // Pop up to 12 integer registers under masks {r15-r12}, {r11-r4}. |
| 230 | const uintptr_t stack[9] = {1, 2, 3, 4, 5, 6, 7, 8, 9}; |
| 231 | |
| 232 | thread_context.arm_sp = reinterpret_cast<uintptr_t>(&stack[0]); |
| 233 | // Pop r15, r12, r8, r4. |
| 234 | const uint8_t instruction[] = {0b10001001, 0b00010001}; |
| 235 | const uint8_t* current_instruction = instruction; |
| 236 | |
| 237 | bool pc_was_updated = false; |
| 238 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 239 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 240 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 241 | EXPECT_TRUE(pc_was_updated); |
| 242 | ASSERT_EQ(current_instruction, instruction + 2); |
| 243 | EXPECT_EQ(reinterpret_cast<uintptr_t>(&stack[0] + 4), thread_context.arm_sp); |
| 244 | |
| 245 | EXPECT_EQ(100ul, thread_context.arm_r0); |
| 246 | EXPECT_EQ(101ul, thread_context.arm_r1); |
| 247 | EXPECT_EQ(102ul, thread_context.arm_r2); |
| 248 | EXPECT_EQ(103ul, thread_context.arm_r3); |
| 249 | EXPECT_EQ(1ul, thread_context.arm_r4); |
| 250 | EXPECT_EQ(105ul, thread_context.arm_r5); |
| 251 | EXPECT_EQ(106ul, thread_context.arm_r6); |
| 252 | EXPECT_EQ(107ul, thread_context.arm_r7); |
| 253 | EXPECT_EQ(2ul, thread_context.arm_r8); |
| 254 | EXPECT_EQ(109ul, thread_context.arm_r9); |
| 255 | EXPECT_EQ(110ul, thread_context.arm_r10); |
| 256 | EXPECT_EQ(111ul, thread_context.arm_fp); |
| 257 | EXPECT_EQ(3ul, thread_context.arm_ip); |
| 258 | EXPECT_EQ(113ul, thread_context.arm_lr); |
| 259 | EXPECT_EQ(4ul, thread_context.arm_pc); |
| 260 | } |
| 261 | |
| 262 | TEST(ChromeAndroidUnwindInstructionTest, TestPopDiscontinuousRegisters) { |
| 263 | RegisterContext thread_context = {}; |
| 264 | |
| 265 | thread_context.arm_r0 = 100; |
| 266 | thread_context.arm_r1 = 101; |
| 267 | thread_context.arm_r2 = 102; |
| 268 | thread_context.arm_r3 = 103; |
| 269 | thread_context.arm_r4 = 104; |
| 270 | thread_context.arm_r5 = 105; |
| 271 | thread_context.arm_r6 = 106; |
| 272 | thread_context.arm_r7 = 107; |
| 273 | thread_context.arm_r8 = 108; |
| 274 | thread_context.arm_r9 = 109; |
| 275 | thread_context.arm_r10 = 110; |
| 276 | thread_context.arm_fp = 111; |
| 277 | thread_context.arm_ip = 112; |
| 278 | thread_context.arm_lr = 113; |
| 279 | thread_context.arm_pc = 114; |
| 280 | |
| 281 | // Pop up to 12 integer registers under masks {r15-r12}, {r11-r4}. |
| 282 | const uintptr_t stack[9] = {1, 2, 3, 4, 5, 6, 7, 8, 9}; |
| 283 | |
| 284 | thread_context.arm_sp = reinterpret_cast<uintptr_t>(&stack[0]); |
| 285 | // Pop r12, r8, r4. |
| 286 | const uint8_t instruction[] = {0b10000001, 0b00010001}; |
| 287 | const uint8_t* current_instruction = instruction; |
| 288 | |
| 289 | bool pc_was_updated = false; |
| 290 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 291 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 292 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 293 | EXPECT_FALSE(pc_was_updated); |
| 294 | ASSERT_EQ(current_instruction, instruction + 2); |
| 295 | EXPECT_EQ(reinterpret_cast<uintptr_t>(&stack[0] + 3), thread_context.arm_sp); |
| 296 | |
| 297 | EXPECT_EQ(100ul, thread_context.arm_r0); |
| 298 | EXPECT_EQ(101ul, thread_context.arm_r1); |
| 299 | EXPECT_EQ(102ul, thread_context.arm_r2); |
| 300 | EXPECT_EQ(103ul, thread_context.arm_r3); |
| 301 | EXPECT_EQ(1ul, thread_context.arm_r4); |
| 302 | EXPECT_EQ(105ul, thread_context.arm_r5); |
| 303 | EXPECT_EQ(106ul, thread_context.arm_r6); |
| 304 | EXPECT_EQ(107ul, thread_context.arm_r7); |
| 305 | EXPECT_EQ(2ul, thread_context.arm_r8); |
| 306 | EXPECT_EQ(109ul, thread_context.arm_r9); |
| 307 | EXPECT_EQ(110ul, thread_context.arm_r10); |
| 308 | EXPECT_EQ(111ul, thread_context.arm_fp); |
| 309 | EXPECT_EQ(3ul, thread_context.arm_ip); |
| 310 | EXPECT_EQ(113ul, thread_context.arm_lr); |
| 311 | EXPECT_EQ(114ul, thread_context.arm_pc); |
| 312 | } |
| 313 | |
| 314 | TEST(ChromeAndroidUnwindInstructionTest, |
| 315 | TestPopDiscontinuousRegistersOverflow) { |
| 316 | RegisterContext thread_context = {}; |
| 317 | |
| 318 | thread_context.arm_r0 = 100; |
| 319 | thread_context.arm_r1 = 101; |
| 320 | thread_context.arm_r2 = 102; |
| 321 | thread_context.arm_r3 = 103; |
| 322 | thread_context.arm_r4 = 104; |
| 323 | thread_context.arm_r5 = 105; |
| 324 | thread_context.arm_r6 = 106; |
| 325 | thread_context.arm_r7 = 107; |
| 326 | thread_context.arm_r8 = 108; |
| 327 | thread_context.arm_r9 = 109; |
| 328 | thread_context.arm_r10 = 110; |
| 329 | thread_context.arm_fp = 111; |
| 330 | thread_context.arm_ip = 112; |
| 331 | thread_context.arm_lr = 113; |
| 332 | thread_context.arm_pc = 114; |
| 333 | |
| 334 | // Pop up to 12 integer registers under masks {r15-r12}, {r11-r4}. |
| 335 | thread_context.arm_sp = 0xffffffff; |
| 336 | // Pop r15, r12, r8, r4. |
| 337 | const uint8_t instruction[] = {0b10001001, 0b00010001}; |
| 338 | const uint8_t* current_instruction = instruction; |
| 339 | |
| 340 | bool pc_was_updated = false; |
| 341 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 342 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 343 | UnwindInstructionResult::kAborted); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 344 | EXPECT_FALSE(pc_was_updated); |
| 345 | ASSERT_EQ(current_instruction, instruction + 2); |
| 346 | EXPECT_EQ(0xffffffff, thread_context.arm_sp); |
| 347 | |
| 348 | EXPECT_EQ(100ul, thread_context.arm_r0); |
| 349 | EXPECT_EQ(101ul, thread_context.arm_r1); |
| 350 | EXPECT_EQ(102ul, thread_context.arm_r2); |
| 351 | EXPECT_EQ(103ul, thread_context.arm_r3); |
| 352 | EXPECT_EQ(104ul, thread_context.arm_r4); |
| 353 | EXPECT_EQ(105ul, thread_context.arm_r5); |
| 354 | EXPECT_EQ(106ul, thread_context.arm_r6); |
| 355 | EXPECT_EQ(107ul, thread_context.arm_r7); |
| 356 | EXPECT_EQ(108ul, thread_context.arm_r8); |
| 357 | EXPECT_EQ(109ul, thread_context.arm_r9); |
| 358 | EXPECT_EQ(110ul, thread_context.arm_r10); |
| 359 | EXPECT_EQ(111ul, thread_context.arm_fp); |
| 360 | EXPECT_EQ(112ul, thread_context.arm_ip); |
| 361 | EXPECT_EQ(113ul, thread_context.arm_lr); |
| 362 | EXPECT_EQ(114ul, thread_context.arm_pc); |
| 363 | } |
| 364 | |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 365 | TEST(ChromeAndroidUnwindInstructionTest, TestRefuseToUnwind) { |
| 366 | RegisterContext thread_context = {}; |
| 367 | |
| 368 | const uint8_t instruction[] = {0b10000000, 0b0}; |
| 369 | const uint8_t* current_instruction = instruction; |
| 370 | |
| 371 | bool pc_was_updated = false; |
| 372 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 373 | &thread_context), |
| 374 | UnwindInstructionResult::kAborted); |
| 375 | EXPECT_FALSE(pc_was_updated); |
| 376 | ASSERT_EQ(current_instruction, instruction + 2); |
| 377 | } |
| 378 | |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 379 | TEST(ChromeAndroidUnwindInstructionTest, |
| 380 | TestPopRegistersIncludingR14MinRegisters) { |
| 381 | RegisterContext thread_context = {}; |
| 382 | |
| 383 | thread_context.arm_r0 = 100; |
| 384 | thread_context.arm_r1 = 101; |
| 385 | thread_context.arm_r2 = 102; |
| 386 | thread_context.arm_r3 = 103; |
| 387 | thread_context.arm_r4 = 104; |
| 388 | thread_context.arm_r5 = 105; |
| 389 | thread_context.arm_r6 = 106; |
| 390 | thread_context.arm_r7 = 107; |
| 391 | thread_context.arm_r8 = 108; |
| 392 | thread_context.arm_r9 = 109; |
| 393 | thread_context.arm_r10 = 110; |
| 394 | thread_context.arm_fp = 111; |
| 395 | thread_context.arm_ip = 112; |
| 396 | thread_context.arm_lr = 113; |
| 397 | |
| 398 | // Popping r4 - r[4 + nnn], r14, at most 9 registers. |
| 399 | // r14 = lr |
| 400 | const uintptr_t stack[9] = {1, 2, 3, 4, 5, 6, 7, 8, 9}; |
| 401 | |
| 402 | thread_context.arm_sp = reinterpret_cast<uintptr_t>(&stack[0]); |
| 403 | const uint8_t instruction = 0b10101000; |
| 404 | const uint8_t* current_instruction = &instruction; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 405 | bool pc_was_updated = false; |
| 406 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 407 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 408 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 409 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 410 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 411 | EXPECT_EQ(reinterpret_cast<uintptr_t>(&stack[0] + 2), thread_context.arm_sp); |
| 412 | |
| 413 | EXPECT_EQ(100ul, thread_context.arm_r0); |
| 414 | EXPECT_EQ(101ul, thread_context.arm_r1); |
| 415 | EXPECT_EQ(102ul, thread_context.arm_r2); |
| 416 | EXPECT_EQ(103ul, thread_context.arm_r3); |
| 417 | EXPECT_EQ(1ul, thread_context.arm_r4); |
| 418 | EXPECT_EQ(105ul, thread_context.arm_r5); |
| 419 | EXPECT_EQ(106ul, thread_context.arm_r6); |
| 420 | EXPECT_EQ(107ul, thread_context.arm_r7); |
| 421 | EXPECT_EQ(108ul, thread_context.arm_r8); |
| 422 | EXPECT_EQ(109ul, thread_context.arm_r9); |
| 423 | EXPECT_EQ(110ul, thread_context.arm_r10); |
| 424 | EXPECT_EQ(111ul, thread_context.arm_fp); |
| 425 | EXPECT_EQ(112ul, thread_context.arm_ip); |
| 426 | EXPECT_EQ(2ul, thread_context.arm_lr); |
| 427 | } |
| 428 | |
| 429 | TEST(ChromeAndroidUnwindInstructionTest, |
| 430 | TestPopRegistersIncludingR14MidRegisters) { |
| 431 | RegisterContext thread_context = {}; |
| 432 | |
| 433 | thread_context.arm_r0 = 100; |
| 434 | thread_context.arm_r1 = 101; |
| 435 | thread_context.arm_r2 = 102; |
| 436 | thread_context.arm_r3 = 103; |
| 437 | thread_context.arm_r4 = 104; |
| 438 | thread_context.arm_r5 = 105; |
| 439 | thread_context.arm_r6 = 106; |
| 440 | thread_context.arm_r7 = 107; |
| 441 | thread_context.arm_r8 = 108; |
| 442 | thread_context.arm_r9 = 109; |
| 443 | thread_context.arm_r10 = 110; |
| 444 | thread_context.arm_fp = 111; |
| 445 | thread_context.arm_ip = 112; |
| 446 | thread_context.arm_lr = 113; |
| 447 | |
| 448 | // Popping r4 - r[4 + nnn], r14, at most 9 registers. |
| 449 | // r14 = lr |
| 450 | const uintptr_t stack[9] = {1, 2, 3, 4, 5, 6, 7, 8, 9}; |
| 451 | |
| 452 | thread_context.arm_sp = reinterpret_cast<uintptr_t>(&stack[0]); |
| 453 | const uint8_t instruction = 0b10101100; // Pop r4-r8, r14. |
| 454 | const uint8_t* current_instruction = &instruction; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 455 | bool pc_was_updated = false; |
| 456 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 457 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 458 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 459 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 460 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 461 | EXPECT_EQ(reinterpret_cast<uintptr_t>(&stack[0] + 6), thread_context.arm_sp); |
| 462 | |
| 463 | EXPECT_EQ(100ul, thread_context.arm_r0); |
| 464 | EXPECT_EQ(101ul, thread_context.arm_r1); |
| 465 | EXPECT_EQ(102ul, thread_context.arm_r2); |
| 466 | EXPECT_EQ(103ul, thread_context.arm_r3); |
| 467 | EXPECT_EQ(1ul, thread_context.arm_r4); |
| 468 | EXPECT_EQ(2ul, thread_context.arm_r5); |
| 469 | EXPECT_EQ(3ul, thread_context.arm_r6); |
| 470 | EXPECT_EQ(4ul, thread_context.arm_r7); |
| 471 | EXPECT_EQ(5ul, thread_context.arm_r8); |
| 472 | EXPECT_EQ(109ul, thread_context.arm_r9); |
| 473 | EXPECT_EQ(110ul, thread_context.arm_r10); |
| 474 | EXPECT_EQ(111ul, thread_context.arm_fp); |
| 475 | EXPECT_EQ(112ul, thread_context.arm_ip); |
| 476 | EXPECT_EQ(6ul, thread_context.arm_lr); |
| 477 | } |
| 478 | |
| 479 | TEST(ChromeAndroidUnwindInstructionTest, |
| 480 | TestPopRegistersIncludingR14MaxRegisters) { |
| 481 | RegisterContext thread_context = {}; |
| 482 | |
| 483 | thread_context.arm_r0 = 100; |
| 484 | thread_context.arm_r1 = 101; |
| 485 | thread_context.arm_r2 = 102; |
| 486 | thread_context.arm_r3 = 103; |
| 487 | thread_context.arm_r4 = 104; |
| 488 | thread_context.arm_r5 = 105; |
| 489 | thread_context.arm_r6 = 106; |
| 490 | thread_context.arm_r7 = 107; |
| 491 | thread_context.arm_r8 = 108; |
| 492 | thread_context.arm_r9 = 109; |
| 493 | thread_context.arm_r10 = 110; |
| 494 | thread_context.arm_fp = 111; |
| 495 | thread_context.arm_ip = 112; |
| 496 | thread_context.arm_lr = 113; |
| 497 | |
| 498 | // Popping r4 - r[4 + nnn], r14, at most 9 registers. |
| 499 | // r14 = lr |
| 500 | const uintptr_t stack[9] = {1, 2, 3, 4, 5, 6, 7, 8, 9}; |
| 501 | |
| 502 | thread_context.arm_sp = reinterpret_cast<uintptr_t>(&stack[0]); |
| 503 | const uint8_t instruction = 0b10101111; // Pop r4 - r11, r14. |
| 504 | const uint8_t* current_instruction = &instruction; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 505 | bool pc_was_updated = false; |
| 506 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 507 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 508 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 509 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 510 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 511 | EXPECT_EQ(reinterpret_cast<uintptr_t>(&stack[0] + 9), thread_context.arm_sp); |
| 512 | |
| 513 | EXPECT_EQ(100ul, thread_context.arm_r0); |
| 514 | EXPECT_EQ(101ul, thread_context.arm_r1); |
| 515 | EXPECT_EQ(102ul, thread_context.arm_r2); |
| 516 | EXPECT_EQ(103ul, thread_context.arm_r3); |
| 517 | EXPECT_EQ(1ul, thread_context.arm_r4); |
| 518 | EXPECT_EQ(2ul, thread_context.arm_r5); |
| 519 | EXPECT_EQ(3ul, thread_context.arm_r6); |
| 520 | EXPECT_EQ(4ul, thread_context.arm_r7); |
| 521 | EXPECT_EQ(5ul, thread_context.arm_r8); |
| 522 | EXPECT_EQ(6ul, thread_context.arm_r9); |
| 523 | EXPECT_EQ(7ul, thread_context.arm_r10); |
| 524 | EXPECT_EQ(8ul, thread_context.arm_fp); |
| 525 | EXPECT_EQ(112ul, thread_context.arm_ip); |
| 526 | EXPECT_EQ(9ul, thread_context.arm_lr); |
| 527 | } |
| 528 | |
| 529 | TEST(ChromeAndroidUnwindInstructionTest, TestPopRegistersIncludingR14Overflow) { |
| 530 | RegisterContext thread_context = {}; |
| 531 | |
| 532 | thread_context.arm_r0 = 100; |
| 533 | thread_context.arm_r1 = 101; |
| 534 | thread_context.arm_r2 = 102; |
| 535 | thread_context.arm_r3 = 103; |
| 536 | thread_context.arm_r4 = 104; |
| 537 | thread_context.arm_r5 = 105; |
| 538 | thread_context.arm_r6 = 106; |
| 539 | thread_context.arm_r7 = 107; |
| 540 | thread_context.arm_r8 = 108; |
| 541 | thread_context.arm_r9 = 109; |
| 542 | thread_context.arm_r10 = 110; |
| 543 | thread_context.arm_fp = 111; |
| 544 | thread_context.arm_ip = 112; |
| 545 | thread_context.arm_lr = 113; |
| 546 | |
| 547 | // Popping r4 - r[4 + nnn], r14, at most 9 registers. |
| 548 | // r14 = lr |
| 549 | thread_context.arm_sp = 0xffffffff; |
| 550 | const uint8_t instruction = 0b10101111; // Pop r4 - r11, r14. |
| 551 | const uint8_t* current_instruction = &instruction; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 552 | bool pc_was_updated = false; |
| 553 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 554 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 555 | UnwindInstructionResult::kAborted); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 556 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 557 | ASSERT_EQ(current_instruction, &instruction + 1); |
| 558 | EXPECT_EQ(0xffffffff, thread_context.arm_sp); |
| 559 | |
| 560 | EXPECT_EQ(100ul, thread_context.arm_r0); |
| 561 | EXPECT_EQ(101ul, thread_context.arm_r1); |
| 562 | EXPECT_EQ(102ul, thread_context.arm_r2); |
| 563 | EXPECT_EQ(103ul, thread_context.arm_r3); |
| 564 | EXPECT_EQ(104ul, thread_context.arm_r4); |
| 565 | EXPECT_EQ(105ul, thread_context.arm_r5); |
| 566 | EXPECT_EQ(106ul, thread_context.arm_r6); |
| 567 | EXPECT_EQ(107ul, thread_context.arm_r7); |
| 568 | EXPECT_EQ(108ul, thread_context.arm_r8); |
| 569 | EXPECT_EQ(109ul, thread_context.arm_r9); |
| 570 | EXPECT_EQ(110ul, thread_context.arm_r10); |
| 571 | EXPECT_EQ(111ul, thread_context.arm_fp); |
| 572 | EXPECT_EQ(112ul, thread_context.arm_ip); |
| 573 | EXPECT_EQ(113ul, thread_context.arm_lr); |
| 574 | } |
| 575 | |
| 576 | TEST(ChromeAndroidUnwindInstructionTest, TestBigStackPointerIncrementMinValue) { |
| 577 | RegisterContext thread_context = {}; |
| 578 | thread_context.arm_sp = 0x10000000; |
| 579 | |
| 580 | const uint8_t increment_0[] = { |
| 581 | 0b10110010, |
| 582 | 0b00000000, |
| 583 | }; |
| 584 | const uint8_t* current_instruction = &increment_0[0]; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 585 | bool pc_was_updated = false; |
| 586 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 587 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 588 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 589 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 590 | ASSERT_EQ(current_instruction, increment_0 + sizeof(increment_0)); |
| 591 | // vsp + 0x204 + (0 << 2) |
| 592 | // = vsp + 0x204 |
| 593 | EXPECT_EQ(0x10000204ul, thread_context.arm_sp); |
| 594 | } |
| 595 | |
| 596 | TEST(ChromeAndroidUnwindInstructionTest, TestBigStackPointerIncrementMidValue) { |
| 597 | RegisterContext thread_context = {}; |
| 598 | thread_context.arm_sp = 0x10000000; |
| 599 | |
| 600 | const uint8_t increment_4[] = { |
| 601 | 0b10110010, |
| 602 | 0b00000100, |
| 603 | }; |
| 604 | const uint8_t* current_instruction = &increment_4[0]; |
| 605 | |
| 606 | // vsp + 0x204 + (4 << 2) |
| 607 | // = vsp + 0x204 + 0x10 |
| 608 | // = vsp + 0x214 |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 609 | bool pc_was_updated = false; |
| 610 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 611 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 612 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 613 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 614 | ASSERT_EQ(current_instruction, increment_4 + sizeof(increment_4)); |
| 615 | EXPECT_EQ(0x10000214ul, thread_context.arm_sp); |
| 616 | } |
| 617 | |
| 618 | TEST(ChromeAndroidUnwindInstructionTest, |
| 619 | TestBigStackPointerIncrementLargeValue) { |
| 620 | RegisterContext thread_context = {}; |
| 621 | thread_context.arm_sp = 0x10000000; |
| 622 | |
| 623 | const uint8_t increment_128[] = { |
| 624 | 0b10110010, |
| 625 | 0b10000000, |
| 626 | 0b00000001, |
| 627 | }; |
| 628 | const uint8_t* current_instruction = &increment_128[0]; |
| 629 | // vsp + 0x204 + (128 << 2) |
| 630 | // = vsp + 0x204 + 512 |
| 631 | // = vsp + 0x204 + 0x200 |
| 632 | // = vsp + 0x404 |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 633 | bool pc_was_updated = false; |
| 634 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 635 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 636 | UnwindInstructionResult::kInstructionPending); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 637 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 638 | ASSERT_EQ(current_instruction, increment_128 + sizeof(increment_128)); |
| 639 | EXPECT_EQ(0x10000404ul, thread_context.arm_sp); |
| 640 | } |
| 641 | |
| 642 | TEST(ChromeAndroidUnwindInstructionTest, TestBigStackPointerIncrementOverflow) { |
| 643 | RegisterContext thread_context = {}; |
| 644 | thread_context.arm_sp = 0xffffffff; |
| 645 | |
| 646 | const uint8_t increment_overflow[] = { |
| 647 | 0b10110010, |
| 648 | 0b10000000, |
| 649 | 0b00000001, |
| 650 | }; // ULEB128 = 128 |
| 651 | const uint8_t* current_instruction = &increment_overflow[0]; |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 652 | bool pc_was_updated = false; |
| 653 | ASSERT_EQ(ExecuteUnwindInstruction(current_instruction, pc_was_updated, |
| 654 | &thread_context), |
Charlie Hu | 82c2ed35 | 2021-09-14 17:58:55 | [diff] [blame] | 655 | UnwindInstructionResult::kAborted); |
Charlie Hu | 01b7e66 | 2021-09-13 14:51:36 | [diff] [blame] | 656 | EXPECT_FALSE(pc_was_updated); |
Charlie Hu | d5c1403 | 2021-08-26 21:45:59 | [diff] [blame] | 657 | ASSERT_EQ(current_instruction, |
| 658 | increment_overflow + sizeof(increment_overflow)); |
| 659 | EXPECT_EQ(0xfffffffful, thread_context.arm_sp); |
| 660 | } |
| 661 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 662 | TEST(ChromeUnwinderAndroidTest, |
Charlie Hu | f36b2f6 | 2021-09-01 22:31:20 | [diff] [blame] | 663 | TestFunctionOffsetTableLookupExactMatchingOffset) { |
Charlie Hu | f36b2f6 | 2021-09-01 22:31:20 | [diff] [blame] | 664 | const uint8_t function_offset_table[] = { |
| 665 | // Function 1: [(130, 2), (128, 3), (0, 4)] |
| 666 | // offset = 130 |
| 667 | 0b10000010, |
| 668 | 0b00000001, |
| 669 | // unwind index = 2 |
| 670 | 0b00000010, |
| 671 | // offset = 128 |
| 672 | 0b10000000, |
| 673 | 0b00000001, |
| 674 | // unwind index = 3 |
| 675 | 0b00000011, |
| 676 | // offset = 0 |
| 677 | 0b00000000, |
| 678 | // unwind index = 4 |
| 679 | 0b00000100, |
| 680 | }; |
| 681 | |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 682 | EXPECT_EQ(3ul, GetFirstUnwindInstructionIndexFromFunctionOffsetTableEntry( |
| 683 | &function_offset_table[0], |
| 684 | /* instruction_offset_from_function_start */ 128)); |
Charlie Hu | f36b2f6 | 2021-09-01 22:31:20 | [diff] [blame] | 685 | } |
| 686 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 687 | TEST(ChromeUnwinderAndroidTest, |
Charlie Hu | f36b2f6 | 2021-09-01 22:31:20 | [diff] [blame] | 688 | TestFunctionOffsetTableLookupNonExactMatchingOffset) { |
Charlie Hu | f36b2f6 | 2021-09-01 22:31:20 | [diff] [blame] | 689 | const uint8_t function_offset_table[] = { |
| 690 | // Function 1: [(130, 2), (128, 3), (0, 4)] |
| 691 | // offset = 130 |
| 692 | 0b10000010, |
| 693 | 0b00000001, |
| 694 | // unwind index = 2 |
| 695 | 0b00000010, |
| 696 | // offset = 128 |
| 697 | 0b10000000, |
| 698 | 0b00000001, |
| 699 | // unwind index = 3 |
| 700 | 0b00000011, |
| 701 | // offset = 0 |
| 702 | 0b00000000, |
| 703 | // unwind index = 4 |
| 704 | 0b00000100, |
| 705 | }; |
| 706 | |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 707 | EXPECT_EQ(3ul, GetFirstUnwindInstructionIndexFromFunctionOffsetTableEntry( |
| 708 | &function_offset_table[0], |
| 709 | /* instruction_offset_from_function_start */ 129)); |
Charlie Hu | f36b2f6 | 2021-09-01 22:31:20 | [diff] [blame] | 710 | } |
| 711 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 712 | TEST(ChromeUnwinderAndroidTest, TestFunctionOffsetTableLookupZeroOffset) { |
Charlie Hu | f36b2f6 | 2021-09-01 22:31:20 | [diff] [blame] | 713 | const uint8_t function_offset_table[] = { |
| 714 | // Function 1: [(130, 2), (128, 3), (0, 4)] |
| 715 | // offset = 130 |
| 716 | 0b10000010, |
| 717 | 0b00000001, |
| 718 | // unwind index = 2 |
| 719 | 0b00000010, |
| 720 | // offset = 128 |
| 721 | 0b10000000, |
| 722 | 0b00000001, |
| 723 | // unwind index = 3 |
| 724 | 0b00000011, |
| 725 | // offset = 0 |
| 726 | 0b00000000, |
| 727 | // unwind index = 4 |
| 728 | 0b00000100, |
| 729 | }; |
| 730 | |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 731 | EXPECT_EQ(4ul, GetFirstUnwindInstructionIndexFromFunctionOffsetTableEntry( |
| 732 | &function_offset_table[0], |
| 733 | /* instruction_offset_from_function_start */ 0)); |
Charlie Hu | f36b2f6 | 2021-09-01 22:31:20 | [diff] [blame] | 734 | } |
| 735 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 736 | TEST(ChromeUnwinderAndroidTest, TestAddressTableLookupEntryInPage) { |
Charlie Hu | 235c6b7 | 2021-09-13 20:50:01 | [diff] [blame] | 737 | const uint32_t page_start_instructions[] = {0, 2}; |
| 738 | const FunctionTableEntry function_offset_table_indices[] = { |
| 739 | // Page 0 |
| 740 | { |
| 741 | /* function_start_address_page_instruction_offset */ 0, |
| 742 | /* function_offset_table_byte_index */ 20, |
| 743 | }, |
| 744 | { |
| 745 | /* function_start_address_page_instruction_offset */ 4, |
| 746 | /* function_offset_table_byte_index */ 40, |
| 747 | }, |
| 748 | // Page 1 |
| 749 | { |
| 750 | /* function_start_address_page_instruction_offset */ 6, |
| 751 | /* function_offset_table_byte_index */ 70, |
| 752 | }, |
| 753 | }; |
| 754 | |
| 755 | { |
| 756 | const uint32_t page_number = 0; |
| 757 | const uint32_t page_instruction_offset = 4; |
| 758 | const auto entry_found = GetFunctionTableIndexFromInstructionOffset( |
| 759 | page_start_instructions, function_offset_table_indices, |
| 760 | /* instruction_offset */ (page_instruction_offset << 1) + |
| 761 | (page_number << 17)); |
| 762 | ASSERT_NE(absl::nullopt, entry_found); |
| 763 | EXPECT_EQ(0, entry_found->instruction_offset_from_function_start); |
| 764 | EXPECT_EQ(40ul, entry_found->function_offset_table_byte_index); |
| 765 | } |
| 766 | |
| 767 | { |
| 768 | const uint32_t page_number = 0; |
| 769 | const uint32_t page_instruction_offset = 50; |
| 770 | const auto entry_found = GetFunctionTableIndexFromInstructionOffset( |
| 771 | page_start_instructions, function_offset_table_indices, |
| 772 | /* instruction_offset */ (page_instruction_offset << 1) + |
| 773 | (page_number << 17)); |
| 774 | ASSERT_NE(absl::nullopt, entry_found); |
| 775 | EXPECT_EQ(46, entry_found->instruction_offset_from_function_start); |
| 776 | EXPECT_EQ(40ul, entry_found->function_offset_table_byte_index); |
| 777 | } |
| 778 | |
| 779 | // Lookup last instruction in last function. |
| 780 | { |
| 781 | const uint32_t page_number = 1; |
| 782 | const uint32_t page_instruction_offset = 0xffff; |
| 783 | const auto entry_found = GetFunctionTableIndexFromInstructionOffset( |
| 784 | page_start_instructions, function_offset_table_indices, |
| 785 | /* instruction_offset */ (page_instruction_offset << 1) + |
| 786 | (page_number << 17)); |
| 787 | ASSERT_NE(absl::nullopt, entry_found); |
| 788 | // 0xffff - 6 = 0xfff9. |
| 789 | EXPECT_EQ(0xfff9, entry_found->instruction_offset_from_function_start); |
| 790 | EXPECT_EQ(70ul, entry_found->function_offset_table_byte_index); |
| 791 | } |
| 792 | } |
| 793 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 794 | TEST(ChromeUnwinderAndroidTest, TestAddressTableLookupEmptyPage) { |
Charlie Hu | 235c6b7 | 2021-09-13 20:50:01 | [diff] [blame] | 795 | const uint32_t page_start_instructions[] = {0, 1, 1}; |
| 796 | const FunctionTableEntry function_offset_table_indices[] = { |
| 797 | // Page 0 |
| 798 | { |
| 799 | /* function_start_address_page_instruction_offset */ 0, |
| 800 | /* function_offset_table_byte_index */ 20, |
| 801 | }, |
| 802 | // Page 1 is empty |
| 803 | // Page 2 |
| 804 | { |
| 805 | /* function_start_address_page_instruction_offset */ 6, |
| 806 | /* function_offset_table_byte_index */ 70, |
| 807 | }, |
| 808 | }; |
| 809 | |
| 810 | const uint32_t page_number = 1; |
| 811 | const uint32_t page_instruction_offset = 4; |
| 812 | const auto entry_found = GetFunctionTableIndexFromInstructionOffset( |
| 813 | page_start_instructions, function_offset_table_indices, |
| 814 | /* instruction_offset */ (page_instruction_offset << 1) + |
| 815 | (page_number << 17)); |
| 816 | ASSERT_NE(absl::nullopt, entry_found); |
| 817 | EXPECT_EQ(0x10004, entry_found->instruction_offset_from_function_start); |
| 818 | EXPECT_EQ(20ul, entry_found->function_offset_table_byte_index); |
| 819 | } |
| 820 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 821 | TEST(ChromeUnwinderAndroidTest, TestAddressTableLookupInvalidIntructionOffset) { |
Charlie Hu | 235c6b7 | 2021-09-13 20:50:01 | [diff] [blame] | 822 | const uint32_t page_start_instructions[] = {0, 1}; |
| 823 | const FunctionTableEntry function_offset_table_indices[] = { |
| 824 | // Page 0 |
| 825 | // This function spans from page 0 offset 0 to page 1 offset 5. |
| 826 | { |
| 827 | /* function_start_address_page_instruction_offset */ 0, |
| 828 | /* function_offset_table_byte_index */ 20, |
| 829 | }, |
| 830 | // Page 1 |
| 831 | { |
| 832 | /* function_start_address_page_instruction_offset */ 6, |
| 833 | /* function_offset_table_byte_index */ 70, |
| 834 | }, |
| 835 | }; |
| 836 | |
| 837 | // Instruction offset lies after last page on page table. |
| 838 | { |
| 839 | const uint32_t page_number = 50; |
| 840 | const uint32_t page_instruction_offset = 6; |
| 841 | const auto entry_found = GetFunctionTableIndexFromInstructionOffset( |
| 842 | page_start_instructions, function_offset_table_indices, |
| 843 | /* instruction_offset */ (page_instruction_offset << 1) + |
| 844 | (page_number << 17)); |
| 845 | ASSERT_EQ(absl::nullopt, entry_found); |
| 846 | } |
| 847 | { |
| 848 | const uint32_t page_number = 2; |
| 849 | const uint32_t page_instruction_offset = 0; |
| 850 | const auto entry_found = GetFunctionTableIndexFromInstructionOffset( |
| 851 | page_start_instructions, function_offset_table_indices, |
| 852 | /* instruction_offset */ (page_instruction_offset << 1) + |
| 853 | (page_number << 17)); |
| 854 | ASSERT_EQ(absl::nullopt, entry_found); |
| 855 | } |
| 856 | } |
| 857 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 858 | TEST(ChromeUnwinderAndroidTest, |
Charlie Hu | 235c6b7 | 2021-09-13 20:50:01 | [diff] [blame] | 859 | TestAddressTableLookupOnSecondPageOfFunctionSpanningPageBoundary) { |
| 860 | const uint32_t page_start_instructions[] = {0, 1, 2}; |
| 861 | const FunctionTableEntry function_offset_table_indices[] = { |
| 862 | // Page 0 |
| 863 | { |
| 864 | /* function_start_address_page_instruction_offset */ 0, |
| 865 | /* function_offset_table_byte_index */ 20, |
| 866 | }, |
| 867 | // Page 1 |
| 868 | { |
| 869 | /* function_start_address_page_instruction_offset */ 6, |
| 870 | /* function_offset_table_byte_index */ 70, |
| 871 | }, |
| 872 | // Page 2 |
| 873 | { |
| 874 | /* function_start_address_page_instruction_offset */ 10, |
| 875 | /* function_offset_table_byte_index */ 80, |
| 876 | }}; |
| 877 | |
| 878 | const uint32_t page_number = 1; |
| 879 | const uint32_t page_instruction_offset = 4; |
| 880 | const auto entry_found = GetFunctionTableIndexFromInstructionOffset( |
| 881 | page_start_instructions, function_offset_table_indices, |
| 882 | /* instruction_offset */ (page_instruction_offset << 1) + |
| 883 | (page_number << 17)); |
| 884 | ASSERT_NE(absl::nullopt, entry_found); |
| 885 | EXPECT_EQ(0x10004, entry_found->instruction_offset_from_function_start); |
| 886 | EXPECT_EQ(20ul, entry_found->function_offset_table_byte_index); |
| 887 | } |
| 888 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 889 | TEST(ChromeUnwinderAndroidTest, |
Charlie Hu | 235c6b7 | 2021-09-13 20:50:01 | [diff] [blame] | 890 | TestAddressTableLookupWithinFunctionSpanningMultiplePages) { |
| 891 | const uint32_t page_start_instructions[] = {0, 1, 1, 1}; |
| 892 | const FunctionTableEntry function_offset_table_indices[] = { |
| 893 | // Page 0 |
| 894 | // This function spans from page 0 offset 0 to page 3 offset 5. |
| 895 | { |
| 896 | /* function_start_address_page_instruction_offset */ 0, |
| 897 | /* function_offset_table_byte_index */ 20, |
| 898 | }, |
| 899 | // Page 1 is empty |
| 900 | // Page 2 is empty |
| 901 | // Page 3 |
| 902 | { |
| 903 | /* function_start_address_page_instruction_offset */ 6, |
| 904 | /* function_offset_table_byte_index */ 70, |
| 905 | }, |
| 906 | }; |
| 907 | |
| 908 | { |
| 909 | const uint32_t page_number = 0; |
| 910 | const uint32_t page_instruction_offset = 4; |
| 911 | const auto entry_found = GetFunctionTableIndexFromInstructionOffset( |
| 912 | page_start_instructions, function_offset_table_indices, |
| 913 | /* instruction_offset */ (page_instruction_offset << 1) + |
| 914 | (page_number << 17)); |
| 915 | ASSERT_NE(absl::nullopt, entry_found); |
| 916 | EXPECT_EQ(0x4, entry_found->instruction_offset_from_function_start); |
| 917 | EXPECT_EQ(20ul, entry_found->function_offset_table_byte_index); |
| 918 | } |
| 919 | { |
| 920 | const uint32_t page_number = 1; |
| 921 | const uint32_t page_instruction_offset = 4; |
| 922 | const auto entry_found = GetFunctionTableIndexFromInstructionOffset( |
| 923 | page_start_instructions, function_offset_table_indices, |
| 924 | /* instruction_offset */ (page_instruction_offset << 1) + |
| 925 | (page_number << 17)); |
| 926 | ASSERT_NE(absl::nullopt, entry_found); |
| 927 | EXPECT_EQ(0x10004, entry_found->instruction_offset_from_function_start); |
| 928 | EXPECT_EQ(20ul, entry_found->function_offset_table_byte_index); |
| 929 | } |
| 930 | { |
| 931 | const uint32_t page_number = 2; |
| 932 | const uint32_t page_instruction_offset = 4; |
| 933 | const auto entry_found = GetFunctionTableIndexFromInstructionOffset( |
| 934 | page_start_instructions, function_offset_table_indices, |
| 935 | /* instruction_offset */ (page_instruction_offset << 1) + |
| 936 | (page_number << 17)); |
| 937 | ASSERT_NE(absl::nullopt, entry_found); |
| 938 | EXPECT_EQ(0x20004, entry_found->instruction_offset_from_function_start); |
| 939 | EXPECT_EQ(20ul, entry_found->function_offset_table_byte_index); |
| 940 | } |
| 941 | { |
| 942 | const uint32_t page_number = 3; |
| 943 | const uint32_t page_instruction_offset = 4; |
| 944 | const auto entry_found = GetFunctionTableIndexFromInstructionOffset( |
| 945 | page_start_instructions, function_offset_table_indices, |
| 946 | /* instruction_offset */ (page_instruction_offset << 1) + |
| 947 | (page_number << 17)); |
| 948 | ASSERT_NE(absl::nullopt, entry_found); |
| 949 | EXPECT_EQ(0x30004, entry_found->instruction_offset_from_function_start); |
| 950 | EXPECT_EQ(20ul, entry_found->function_offset_table_byte_index); |
| 951 | } |
| 952 | } |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 953 | |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 954 | // Utility function to add a single native module during test setup. Returns |
| 955 | // a pointer to the provided module. |
| 956 | const ModuleCache::Module* AddNativeModule( |
| 957 | ModuleCache* cache, |
| 958 | std::unique_ptr<const ModuleCache::Module> module) { |
| 959 | const ModuleCache::Module* module_ptr = module.get(); |
| 960 | cache->AddCustomNativeModule(std::move(module)); |
| 961 | return module_ptr; |
| 962 | } |
| 963 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 964 | TEST(ChromeUnwinderAndroidTest, CanUnwindFrom) { |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 965 | const uint32_t page_table[] = {0}; |
| 966 | const FunctionTableEntry function_table[] = {{0, 0}}; |
| 967 | const uint8_t function_offset_table[] = {0}; |
| 968 | const uint8_t unwind_instruction_table[] = {0}; |
| 969 | auto dummy_unwind_info = ChromeUnwindInfoAndroid{ |
Tom Sepez | 10f7df1d78 | 2024-01-12 17:22:43 | [diff] [blame] | 970 | unwind_instruction_table, |
| 971 | function_offset_table, |
| 972 | function_table, |
| 973 | page_table, |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 974 | }; |
| 975 | |
Leonard Grey | 412c5486 | 2022-02-04 19:37:36 | [diff] [blame] | 976 | auto chrome_module = std::make_unique<TestModule>(0x1000, 0x500); |
| 977 | auto non_chrome_module = std::make_unique<TestModule>(0x2000, 0x500); |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 978 | |
| 979 | ModuleCache module_cache; |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 980 | ChromeUnwinderAndroid unwinder(dummy_unwind_info, |
| 981 | chrome_module->GetBaseAddress(), |
| 982 | /* text_section_start_address */ |
| 983 | chrome_module->GetBaseAddress() + 4); |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 984 | unwinder.Initialize(&module_cache); |
| 985 | |
| 986 | EXPECT_TRUE(unwinder.CanUnwindFrom({0x1100, chrome_module.get()})); |
| 987 | EXPECT_TRUE(unwinder.CanUnwindFrom({0x1000, chrome_module.get()})); |
| 988 | EXPECT_FALSE(unwinder.CanUnwindFrom({0x2100, non_chrome_module.get()})); |
| 989 | EXPECT_FALSE(unwinder.CanUnwindFrom({0x400, nullptr})); |
| 990 | } |
| 991 | |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 992 | namespace { |
| 993 | void ExpectFramesEq(const std::vector<Frame>& expected, |
| 994 | const std::vector<Frame>& actual) { |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 995 | EXPECT_EQ(actual.size(), expected.size()); |
| 996 | if (actual.size() != expected.size()) |
| 997 | return; |
| 998 | |
| 999 | for (size_t i = 0; i < actual.size(); i++) { |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1000 | EXPECT_EQ(expected[i].module, actual[i].module); |
| 1001 | EXPECT_EQ(expected[i].instruction_pointer, actual[i].instruction_pointer); |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1002 | } |
| 1003 | } |
| 1004 | |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1005 | class AlignedStackMemory { |
| 1006 | public: |
| 1007 | AlignedStackMemory(std::initializer_list<uintptr_t> values) |
| 1008 | : size_(values.size()), |
| 1009 | stack_memory_(static_cast<uintptr_t*>( |
| 1010 | AlignedAlloc(size_ * sizeof(uintptr_t), 2 * sizeof(uintptr_t)))) { |
| 1011 | DCHECK_EQ(size_ % 2, 0u); |
Peter Kasting | 50039f3 | 2022-10-28 16:49:22 | [diff] [blame] | 1012 | ranges::copy(values, stack_memory_.get()); |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1013 | } |
| 1014 | |
| 1015 | uintptr_t stack_start_address() const { |
| 1016 | return reinterpret_cast<uintptr_t>(stack_memory_.get()); |
| 1017 | } |
| 1018 | |
| 1019 | uintptr_t stack_end_address() const { |
| 1020 | return reinterpret_cast<uintptr_t>(stack_memory_.get() + size_); |
| 1021 | } |
| 1022 | |
| 1023 | private: |
| 1024 | const uintptr_t size_; |
| 1025 | const std::unique_ptr<uintptr_t, AlignedFreeDeleter> stack_memory_; |
| 1026 | }; |
| 1027 | |
| 1028 | } // namespace |
| 1029 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1030 | TEST(ChromeUnwinderAndroidTest, TryUnwind) { |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1031 | const uint32_t page_table[] = {0, 2}; |
Daniel Cheng | f45f4760 | 2022-02-28 22:38:32 | [diff] [blame] | 1032 | const size_t number_of_pages = std::size(page_table); |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1033 | const size_t page_size = 1 << 17; |
| 1034 | |
| 1035 | const FunctionTableEntry function_table[] = { |
| 1036 | // Page 0. |
| 1037 | {0, 0}, // Function 0. |
| 1038 | {0x10, 4}, // Function 1. The function to unwind 2 times. |
| 1039 | // Page 1. |
| 1040 | {0x5, 8}, // Function 2. |
| 1041 | {0x20, 12}, // Function 3. |
| 1042 | }; |
| 1043 | const uint8_t function_offset_table[] = { |
| 1044 | // Function 0. |
| 1045 | 0x2, |
| 1046 | 0, |
| 1047 | 0x0, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1048 | 1, |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1049 | // Function 1. |
| 1050 | 0x7f, |
| 1051 | 0, |
| 1052 | 0x0, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1053 | 1, |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1054 | // Function 2. |
| 1055 | 0x78, |
| 1056 | 0, |
| 1057 | 0x0, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1058 | 1, |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1059 | // Function 3. |
| 1060 | 0x2, |
| 1061 | 0, |
| 1062 | 0x0, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1063 | 1, |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1064 | }; |
| 1065 | const uint8_t unwind_instruction_table[] = { |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1066 | // Offset 0: Pop r4, r14 from stack top. |
| 1067 | // Need to pop 2 registers to keep SP aligned. |
| 1068 | 0b10101000, |
| 1069 | // Offset 1: COMPLETE. |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1070 | 0b10110000, |
| 1071 | }; |
| 1072 | |
| 1073 | auto unwind_info = ChromeUnwindInfoAndroid{ |
Tom Sepez | 10f7df1d78 | 2024-01-12 17:22:43 | [diff] [blame] | 1074 | unwind_instruction_table, |
| 1075 | function_offset_table, |
| 1076 | function_table, |
| 1077 | page_table, |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1078 | }; |
| 1079 | |
| 1080 | ModuleCache module_cache; |
| 1081 | const ModuleCache::Module* chrome_module = AddNativeModule( |
| 1082 | &module_cache, std::make_unique<TestModule>( |
| 1083 | 0x1000, number_of_pages * page_size, "ChromeModule")); |
| 1084 | |
| 1085 | uintptr_t text_section_start_address = 0x1100; |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1086 | ChromeUnwinderAndroid unwinder(unwind_info, chrome_module->GetBaseAddress(), |
| 1087 | text_section_start_address); |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1088 | |
| 1089 | unwinder.Initialize(&module_cache); |
| 1090 | |
| 1091 | // Both first_pc and second_pc lie in Function 1's address range. |
| 1092 | uintptr_t first_pc = text_section_start_address + 0x20; |
| 1093 | uintptr_t second_pc = text_section_start_address + page_size + 0x4; |
| 1094 | // third_pc lies outside chrome_module's address range. |
| 1095 | uintptr_t third_pc = text_section_start_address + 3 * page_size; |
| 1096 | |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1097 | AlignedStackMemory stack_memory = { |
| 1098 | 0x0, |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1099 | third_pc, |
| 1100 | 0xFFFF, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1101 | 0xFFFF, |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1102 | }; |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1103 | |
| 1104 | std::vector<Frame> unwound_frames = {{first_pc, chrome_module}}; |
| 1105 | RegisterContext context; |
| 1106 | RegisterContextInstructionPointer(&context) = first_pc; |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1107 | RegisterContextStackPointer(&context) = stack_memory.stack_start_address(); |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1108 | context.arm_lr = second_pc; |
| 1109 | |
Charlie Hu | a1d07b92 | 2021-11-02 16:55:13 | [diff] [blame] | 1110 | EXPECT_EQ(UnwindResult::kUnrecognizedFrame, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1111 | unwinder.TryUnwind(&context, stack_memory.stack_end_address(), |
| 1112 | &unwound_frames)); |
Charlie Hu | 78e0040 | 2021-10-13 06:10:43 | [diff] [blame] | 1113 | ExpectFramesEq(std::vector<Frame>({{first_pc, chrome_module}, |
| 1114 | {second_pc, chrome_module}, |
| 1115 | {third_pc, nullptr}}), |
| 1116 | unwound_frames); |
| 1117 | } |
| 1118 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1119 | TEST(ChromeUnwinderAndroidTest, TryUnwindInfiniteLoopSingleFrame) { |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1120 | const uint32_t page_table[] = {0, 2}; |
| 1121 | const size_t number_of_pages = std::size(page_table); |
| 1122 | const size_t page_size = 1 << 17; |
| 1123 | |
| 1124 | const FunctionTableEntry function_table[] = { |
| 1125 | // Page 0. |
| 1126 | {0x0, 0}, // Refuse to unwind filler function. |
| 1127 | {0x10, 2}, // Function 0. The function to unwind. |
| 1128 | // Page 1. |
| 1129 | {0x5, 0}, // Refuse to unwind filler function. |
| 1130 | }; |
| 1131 | const uint8_t function_offset_table[] = { |
| 1132 | // Refuse to unwind filler function. |
| 1133 | 0x0, |
| 1134 | 0, |
| 1135 | // Function 0. |
| 1136 | 0x0, |
| 1137 | 2, |
| 1138 | }; |
| 1139 | const uint8_t unwind_instruction_table[] = { |
| 1140 | // Offset 0: REFUSE_TO_UNWIND. |
| 1141 | 0b10000000, |
| 1142 | 0b00000000, |
| 1143 | // Offset 2: COMPLETE. |
| 1144 | 0b10110000, |
| 1145 | }; |
| 1146 | |
| 1147 | auto unwind_info = ChromeUnwindInfoAndroid{ |
Tom Sepez | 10f7df1d78 | 2024-01-12 17:22:43 | [diff] [blame] | 1148 | unwind_instruction_table, |
| 1149 | function_offset_table, |
| 1150 | function_table, |
| 1151 | page_table, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1152 | }; |
| 1153 | |
| 1154 | ModuleCache module_cache; |
| 1155 | const ModuleCache::Module* chrome_module = AddNativeModule( |
| 1156 | &module_cache, std::make_unique<TestModule>( |
| 1157 | 0x1000, number_of_pages * page_size, "ChromeModule")); |
| 1158 | |
| 1159 | uintptr_t text_section_start_address = 0x1100; |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1160 | ChromeUnwinderAndroid unwinder(unwind_info, chrome_module->GetBaseAddress(), |
| 1161 | text_section_start_address); |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1162 | |
| 1163 | unwinder.Initialize(&module_cache); |
| 1164 | uintptr_t pc = text_section_start_address + 0x20; |
| 1165 | |
| 1166 | AlignedStackMemory stack_memory = { |
| 1167 | 0xFFFF, |
| 1168 | 0xFFFF, |
| 1169 | }; |
| 1170 | |
| 1171 | std::vector<Frame> unwound_frames = {{pc, chrome_module}}; |
| 1172 | RegisterContext context; |
| 1173 | RegisterContextInstructionPointer(&context) = pc; |
| 1174 | RegisterContextStackPointer(&context) = stack_memory.stack_start_address(); |
| 1175 | |
| 1176 | // Set lr = pc so that both sp and pc stays the same after first round of |
| 1177 | // unwind. |
| 1178 | context.arm_lr = pc; |
| 1179 | |
| 1180 | EXPECT_EQ(UnwindResult::kAborted, |
| 1181 | unwinder.TryUnwind(&context, stack_memory.stack_end_address(), |
| 1182 | &unwound_frames)); |
| 1183 | ExpectFramesEq(std::vector<Frame>({{pc, chrome_module}}), unwound_frames); |
| 1184 | } |
| 1185 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1186 | TEST(ChromeUnwinderAndroidTest, TryUnwindInfiniteLoopMultipleFrames) { |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1187 | // This test aims to produce a scenario, where after the unwind of a number |
| 1188 | // of frames, the sp and pc get to their original state before the unwind. |
| 1189 | |
| 1190 | // Function 1 (pc1, sp1): |
| 1191 | // - set pc = lr(pc2) |
| 1192 | // Function 2 (pc2, sp1): |
| 1193 | // - pop r14(pc2), r15(pc1) off stack |
| 1194 | // - vsp = r4 (reset vsp to frame initial vsp) |
| 1195 | |
| 1196 | const uint32_t page_table[] = {0, 3}; |
| 1197 | const size_t number_of_pages = std::size(page_table); |
| 1198 | const size_t page_size = 1 << 17; |
| 1199 | |
| 1200 | const FunctionTableEntry function_table[] = { |
| 1201 | // Page 0. |
| 1202 | {0x0, 0}, // Refuse to unwind filler function. |
| 1203 | {0x10, 2}, // Function 1. The function to unwind. |
| 1204 | {0x100, 2}, // Function 2. The function to unwind. |
| 1205 | // Page 1. |
| 1206 | {0x5, 0}, // Refuse to unwind filler function. |
| 1207 | }; |
| 1208 | const uint8_t function_offset_table[] = { |
| 1209 | // Refuse to unwind filler function. |
| 1210 | 0x0, |
| 1211 | 0, |
| 1212 | // Function 0. |
| 1213 | 0x0, |
| 1214 | 2, |
| 1215 | // Function 1. |
| 1216 | 0x2, |
| 1217 | 3, |
| 1218 | 0x1, |
| 1219 | 5, |
| 1220 | 0x0, |
| 1221 | 6, |
| 1222 | }; |
| 1223 | const uint8_t unwind_instruction_table[] = { |
| 1224 | // Offset 0: REFUSE_TO_UNWIND. |
| 1225 | 0b10000000, |
| 1226 | 0b00000000, |
| 1227 | // Offset 2: COMPLETE. |
| 1228 | 0b10110000, |
| 1229 | // Offset 3: POP r14, r15 off the stack. |
| 1230 | 0b10001100, |
| 1231 | 0b00000000, |
| 1232 | // Offset 5: vsp = r4. |
| 1233 | 0b10010100, |
| 1234 | // Offset 6: COMPLETE. |
| 1235 | 0b10110000, |
| 1236 | }; |
| 1237 | |
| 1238 | auto unwind_info = ChromeUnwindInfoAndroid{ |
Tom Sepez | 10f7df1d78 | 2024-01-12 17:22:43 | [diff] [blame] | 1239 | unwind_instruction_table, |
| 1240 | function_offset_table, |
| 1241 | function_table, |
| 1242 | page_table, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1243 | }; |
| 1244 | |
| 1245 | ModuleCache module_cache; |
| 1246 | const ModuleCache::Module* chrome_module = AddNativeModule( |
| 1247 | &module_cache, std::make_unique<TestModule>( |
| 1248 | 0x1000, number_of_pages * page_size, "ChromeModule")); |
| 1249 | |
| 1250 | uintptr_t text_section_start_address = 0x1100; |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1251 | ChromeUnwinderAndroid unwinder(unwind_info, chrome_module->GetBaseAddress(), |
| 1252 | text_section_start_address); |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1253 | |
| 1254 | unwinder.Initialize(&module_cache); |
| 1255 | uintptr_t first_pc = text_section_start_address + 0x20; // Function 1. |
| 1256 | uintptr_t second_pc = text_section_start_address + 0x110; // Function 2. |
| 1257 | |
| 1258 | AlignedStackMemory stack_memory = { |
| 1259 | second_pc, |
| 1260 | first_pc, |
| 1261 | 0xFFFF, |
| 1262 | 0xFFFF, |
| 1263 | }; |
| 1264 | |
| 1265 | std::vector<Frame> unwound_frames = {{first_pc, chrome_module}}; |
| 1266 | RegisterContext context; |
| 1267 | RegisterContextInstructionPointer(&context) = first_pc; |
| 1268 | RegisterContextStackPointer(&context) = stack_memory.stack_start_address(); |
| 1269 | |
| 1270 | context.arm_lr = second_pc; |
| 1271 | context.arm_r4 = stack_memory.stack_start_address(); |
| 1272 | |
| 1273 | EXPECT_EQ(UnwindResult::kAborted, |
| 1274 | unwinder.TryUnwind(&context, stack_memory.stack_end_address(), |
| 1275 | &unwound_frames)); |
| 1276 | ExpectFramesEq(std::vector<Frame>( |
| 1277 | {{first_pc, chrome_module}, {second_pc, chrome_module}}), |
| 1278 | unwound_frames); |
| 1279 | } |
| 1280 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1281 | TEST(ChromeUnwinderAndroidTest, TryUnwindUnalignedSPFrameUnwind) { |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1282 | // SP should be 2-uintptr_t aligned before/after each frame unwind. |
| 1283 | const uint32_t page_table[] = {0, 2}; |
| 1284 | const size_t number_of_pages = std::size(page_table); |
| 1285 | const size_t page_size = 1 << 17; |
| 1286 | |
| 1287 | const FunctionTableEntry function_table[] = { |
| 1288 | // Page 0. |
| 1289 | {0x0, 0}, // Refuse to unwind filler function. |
| 1290 | {0x10, 2}, // Function 0. The function to unwind. |
| 1291 | // Page 1. |
| 1292 | {0x5, 0}, // Refuse to unwind filler function. |
| 1293 | }; |
| 1294 | const uint8_t function_offset_table[] = { |
| 1295 | // Refuse to unwind filler function. |
| 1296 | 0x0, |
| 1297 | 0, |
| 1298 | // Function 0. |
| 1299 | 0x0, |
| 1300 | 2, |
| 1301 | }; |
| 1302 | const uint8_t unwind_instruction_table[] = { |
| 1303 | // Offset 0: REFUSE_TO_UNWIND. |
| 1304 | 0b10000000, |
| 1305 | 0b00000000, |
| 1306 | // Offset 2: COMPLETE. |
| 1307 | 0b10110000, |
| 1308 | }; |
| 1309 | |
| 1310 | auto unwind_info = ChromeUnwindInfoAndroid{ |
Tom Sepez | 10f7df1d78 | 2024-01-12 17:22:43 | [diff] [blame] | 1311 | unwind_instruction_table, |
| 1312 | function_offset_table, |
| 1313 | function_table, |
| 1314 | page_table, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1315 | }; |
| 1316 | |
| 1317 | ModuleCache module_cache; |
| 1318 | const ModuleCache::Module* chrome_module = AddNativeModule( |
| 1319 | &module_cache, std::make_unique<TestModule>( |
| 1320 | 0x1000, number_of_pages * page_size, "ChromeModule")); |
| 1321 | |
| 1322 | uintptr_t text_section_start_address = 0x1100; |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1323 | ChromeUnwinderAndroid unwinder(unwind_info, chrome_module->GetBaseAddress(), |
| 1324 | text_section_start_address); |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1325 | |
| 1326 | unwinder.Initialize(&module_cache); |
| 1327 | uintptr_t pc = text_section_start_address + 0x20; |
| 1328 | |
| 1329 | AlignedStackMemory stack_memory = { |
| 1330 | 0xFFFF, |
| 1331 | 0xFFFF, |
| 1332 | }; |
| 1333 | |
| 1334 | std::vector<Frame> unwound_frames = {{pc, chrome_module}}; |
| 1335 | RegisterContext context; |
| 1336 | RegisterContextInstructionPointer(&context) = pc; |
| 1337 | // Make stack memory not aligned to 2 * sizeof(uintptr_t); |
| 1338 | RegisterContextStackPointer(&context) = |
| 1339 | stack_memory.stack_start_address() + sizeof(uintptr_t); |
| 1340 | |
| 1341 | // The address is outside chrome module, which will result the unwind to |
| 1342 | // stop with result kUnrecognizedFrame if SP alignment issue was not detected. |
| 1343 | context.arm_lr = |
| 1344 | text_section_start_address + (number_of_pages + 1) * page_size; |
| 1345 | |
| 1346 | EXPECT_EQ(UnwindResult::kAborted, |
| 1347 | unwinder.TryUnwind(&context, stack_memory.stack_end_address(), |
| 1348 | &unwound_frames)); |
| 1349 | ExpectFramesEq(std::vector<Frame>({{pc, chrome_module}}), unwound_frames); |
| 1350 | } |
| 1351 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1352 | TEST(ChromeUnwinderAndroidTest, TryUnwindUnalignedSPInstructionUnwind) { |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1353 | // SP should be uintptr_t aligned before/after each unwind instruction |
| 1354 | // execution. |
| 1355 | |
| 1356 | const uint32_t page_table[] = {0, 2}; |
| 1357 | const size_t number_of_pages = std::size(page_table); |
| 1358 | const size_t page_size = 1 << 17; |
| 1359 | |
| 1360 | const FunctionTableEntry function_table[] = { |
| 1361 | // Page 0. |
| 1362 | {0x0, 0}, // Refuse to unwind filler function. |
| 1363 | {0x10, 2}, // Function 0. The function to unwind. |
| 1364 | // Page 1. |
| 1365 | {0x5, 0}, // Refuse to unwind filler function. |
| 1366 | }; |
| 1367 | const uint8_t function_offset_table[] = { |
| 1368 | // Refuse to unwind filler function. |
| 1369 | 0x0, |
| 1370 | 0, |
| 1371 | // Function 0. |
| 1372 | 0x0, |
| 1373 | 2, |
| 1374 | }; |
| 1375 | const uint8_t unwind_instruction_table[] = { |
| 1376 | // Offset 0: REFUSE_TO_UNWIND. |
| 1377 | 0b10000000, 0b00000000, |
| 1378 | // Offset 2: |
| 1379 | 0b10010100, // vsp = r4, where r4 = stack + (sizeof(uintptr_t) / 2) |
| 1380 | 0b10110000, // COMPLETE. |
| 1381 | }; |
| 1382 | |
| 1383 | auto unwind_info = ChromeUnwindInfoAndroid{ |
Tom Sepez | 10f7df1d78 | 2024-01-12 17:22:43 | [diff] [blame] | 1384 | unwind_instruction_table, |
| 1385 | function_offset_table, |
| 1386 | function_table, |
| 1387 | page_table, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1388 | }; |
| 1389 | |
| 1390 | ModuleCache module_cache; |
| 1391 | const ModuleCache::Module* chrome_module = AddNativeModule( |
| 1392 | &module_cache, std::make_unique<TestModule>( |
| 1393 | 0x1000, number_of_pages * page_size, "ChromeModule")); |
| 1394 | |
| 1395 | uintptr_t text_section_start_address = 0x1100; |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1396 | ChromeUnwinderAndroid unwinder(unwind_info, chrome_module->GetBaseAddress(), |
| 1397 | text_section_start_address); |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1398 | |
| 1399 | unwinder.Initialize(&module_cache); |
| 1400 | uintptr_t pc = text_section_start_address + 0x20; |
| 1401 | |
| 1402 | AlignedStackMemory stack_memory = { |
| 1403 | 0xFFFF, |
| 1404 | 0xFFFF, |
| 1405 | }; |
| 1406 | |
| 1407 | std::vector<Frame> unwound_frames = {{pc, chrome_module}}; |
| 1408 | RegisterContext context; |
| 1409 | RegisterContextInstructionPointer(&context) = pc; |
| 1410 | RegisterContextStackPointer(&context) = stack_memory.stack_start_address(); |
| 1411 | |
| 1412 | // The address is outside chrome module, which will result the unwind to |
| 1413 | // stop with result kUnrecognizedFrame if SP alignment issue was not detected. |
| 1414 | context.arm_lr = |
| 1415 | text_section_start_address + (number_of_pages + 1) * page_size; |
| 1416 | |
| 1417 | context.arm_r4 = stack_memory.stack_start_address() + sizeof(uintptr_t) / 2; |
| 1418 | |
| 1419 | EXPECT_EQ(UnwindResult::kAborted, |
| 1420 | unwinder.TryUnwind(&context, stack_memory.stack_end_address(), |
| 1421 | &unwound_frames)); |
| 1422 | ExpectFramesEq(std::vector<Frame>({{pc, chrome_module}}), unwound_frames); |
| 1423 | } |
| 1424 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1425 | TEST(ChromeUnwinderAndroidTest, TryUnwindSPOverflow) { |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1426 | const uint32_t page_table[] = {0, 2}; |
| 1427 | const size_t number_of_pages = std::size(page_table); |
| 1428 | const size_t page_size = 1 << 17; |
| 1429 | |
| 1430 | const FunctionTableEntry function_table[] = { |
| 1431 | // Page 0. |
| 1432 | {0x0, 0}, // Refuse to unwind filler function. |
| 1433 | {0x10, 2}, // Function 0. The function to unwind. |
| 1434 | // Page 1. |
| 1435 | {0x5, 0}, // Refuse to unwind filler function. |
| 1436 | }; |
| 1437 | const uint8_t function_offset_table[] = { |
| 1438 | // Refuse to unwind filler function. |
| 1439 | 0x0, |
| 1440 | 0, |
| 1441 | // Function 0. |
| 1442 | 0x0, |
| 1443 | 2, |
| 1444 | }; |
| 1445 | const uint8_t unwind_instruction_table[] = { |
| 1446 | // Offset 0: REFUSE_TO_UNWIND. |
| 1447 | 0b10000000, 0b00000000, |
| 1448 | // Offset 2. |
| 1449 | 0b10010100, // vsp = r4. |
| 1450 | 0b10101000, // Pop r4, r14. |
| 1451 | 0b10110000, // COMPLETE. |
| 1452 | }; |
| 1453 | |
| 1454 | auto unwind_info = ChromeUnwindInfoAndroid{ |
Tom Sepez | 10f7df1d78 | 2024-01-12 17:22:43 | [diff] [blame] | 1455 | unwind_instruction_table, |
| 1456 | function_offset_table, |
| 1457 | function_table, |
| 1458 | page_table, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1459 | }; |
| 1460 | |
| 1461 | ModuleCache module_cache; |
| 1462 | const ModuleCache::Module* chrome_module = AddNativeModule( |
| 1463 | &module_cache, std::make_unique<TestModule>( |
| 1464 | 0x1000, number_of_pages * page_size, "ChromeModule")); |
| 1465 | |
| 1466 | uintptr_t text_section_start_address = 0x1100; |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1467 | ChromeUnwinderAndroid unwinder(unwind_info, chrome_module->GetBaseAddress(), |
| 1468 | text_section_start_address); |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1469 | |
| 1470 | unwinder.Initialize(&module_cache); |
| 1471 | uintptr_t pc = text_section_start_address + 0x20; |
| 1472 | |
| 1473 | AlignedStackMemory stack_memory = { |
| 1474 | 0xFFFF, |
| 1475 | 0xFFFF, |
| 1476 | }; |
| 1477 | std::vector<Frame> unwound_frames = {{pc, chrome_module}}; |
| 1478 | RegisterContext context; |
| 1479 | RegisterContextInstructionPointer(&context) = pc; |
| 1480 | RegisterContextStackPointer(&context) = stack_memory.stack_start_address(); |
| 1481 | |
| 1482 | // Setting vsp = 0xffffffff should cause SP overflow. |
| 1483 | context.arm_r4 = 0xffffffff; |
| 1484 | |
| 1485 | // The address is outside chrome module, which will result the unwind to |
| 1486 | // stop with result kUnrecognizedFrame if the unwinder did not abort for other |
| 1487 | // reasons. |
| 1488 | context.arm_lr = |
| 1489 | text_section_start_address + (number_of_pages + 1) * page_size; |
| 1490 | |
| 1491 | EXPECT_EQ(UnwindResult::kAborted, |
| 1492 | unwinder.TryUnwind(&context, stack_memory.stack_end_address(), |
| 1493 | &unwound_frames)); |
| 1494 | ExpectFramesEq(std::vector<Frame>({{pc, chrome_module}}), unwound_frames); |
| 1495 | } |
| 1496 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1497 | TEST(ChromeUnwinderAndroidTest, TryUnwindNullSP) { |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1498 | const uint32_t page_table[] = {0, 2}; |
| 1499 | const size_t number_of_pages = std::size(page_table); |
| 1500 | const size_t page_size = 1 << 17; |
| 1501 | |
| 1502 | const FunctionTableEntry function_table[] = { |
| 1503 | // Page 0. |
| 1504 | {0x0, 0}, // Refuse to unwind filler function. |
| 1505 | {0x10, 2}, // Function 0. The function to unwind. |
| 1506 | // Page 1. |
| 1507 | {0x5, 0}, // Refuse to unwind filler function. |
| 1508 | }; |
| 1509 | const uint8_t function_offset_table[] = { |
| 1510 | // Refuse to unwind filler function. |
| 1511 | 0x0, |
| 1512 | 0, |
| 1513 | // Function 0. |
| 1514 | 0x0, |
| 1515 | 2, |
| 1516 | }; |
| 1517 | const uint8_t unwind_instruction_table[] = { |
| 1518 | // Offset 0: REFUSE_TO_UNWIND. |
| 1519 | 0b10000000, 0b00000000, |
| 1520 | // Offset 2. |
| 1521 | 0b10010100, // vsp = r4. |
| 1522 | 0b10101000, // Pop r4, r14. |
| 1523 | 0b10110000, // COMPLETE. |
| 1524 | }; |
| 1525 | |
| 1526 | auto unwind_info = ChromeUnwindInfoAndroid{ |
Tom Sepez | 10f7df1d78 | 2024-01-12 17:22:43 | [diff] [blame] | 1527 | unwind_instruction_table, |
| 1528 | function_offset_table, |
| 1529 | function_table, |
| 1530 | page_table, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1531 | }; |
| 1532 | |
| 1533 | ModuleCache module_cache; |
| 1534 | const ModuleCache::Module* chrome_module = AddNativeModule( |
| 1535 | &module_cache, std::make_unique<TestModule>( |
| 1536 | 0x1000, number_of_pages * page_size, "ChromeModule")); |
| 1537 | |
| 1538 | uintptr_t text_section_start_address = 0x1100; |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1539 | ChromeUnwinderAndroid unwinder(unwind_info, chrome_module->GetBaseAddress(), |
| 1540 | text_section_start_address); |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1541 | |
| 1542 | unwinder.Initialize(&module_cache); |
| 1543 | uintptr_t pc = text_section_start_address + 0x20; |
| 1544 | |
| 1545 | AlignedStackMemory stack_memory = { |
| 1546 | 0xFFFF, |
| 1547 | 0xFFFF, |
| 1548 | }; |
| 1549 | std::vector<Frame> unwound_frames = {{pc, chrome_module}}; |
| 1550 | RegisterContext context; |
| 1551 | RegisterContextInstructionPointer(&context) = pc; |
| 1552 | RegisterContextStackPointer(&context) = stack_memory.stack_start_address(); |
| 1553 | |
| 1554 | // Setting vsp = 0x0 should cause the unwinder to abort. |
| 1555 | context.arm_r4 = 0x0; |
| 1556 | |
| 1557 | // The address is outside chrome module, which will result the unwind to |
| 1558 | // stop with result kUnrecognizedFrame if the unwinder did not abort for other |
| 1559 | // reasons. |
| 1560 | context.arm_lr = |
| 1561 | text_section_start_address + (number_of_pages + 1) * page_size; |
| 1562 | |
| 1563 | EXPECT_EQ(UnwindResult::kAborted, |
| 1564 | unwinder.TryUnwind(&context, stack_memory.stack_end_address(), |
| 1565 | &unwound_frames)); |
| 1566 | ExpectFramesEq(std::vector<Frame>({{pc, chrome_module}}), unwound_frames); |
| 1567 | } |
| 1568 | |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1569 | TEST(ChromeUnwinderAndroidTest, TryUnwindInvalidSPOperation) { |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1570 | // This test aims to verify that for each unwind instruction executed, it is |
| 1571 | // always true that sp > frame initial sp. |
| 1572 | |
| 1573 | const uint32_t page_table[] = {0, 2}; |
| 1574 | const size_t number_of_pages = std::size(page_table); |
| 1575 | const size_t page_size = 1 << 17; |
| 1576 | |
| 1577 | const FunctionTableEntry function_table[] = { |
| 1578 | // Page 0. |
| 1579 | {0x0, 0}, // Refuse to unwind filler function. |
| 1580 | {0x10, 2}, // Function 0. The function to unwind. |
| 1581 | // Page 1. |
| 1582 | {0x5, 0}, // Refuse to unwind filler function. |
| 1583 | }; |
| 1584 | const uint8_t function_offset_table[] = { |
| 1585 | // Refuse to unwind filler function. |
| 1586 | 0x0, |
| 1587 | 0, |
| 1588 | // Function 0. |
| 1589 | 0x0, |
| 1590 | 2, |
| 1591 | }; |
| 1592 | const uint8_t unwind_instruction_table[] = { |
| 1593 | // Offset 0: REFUSE_TO_UNWIND. |
| 1594 | 0b10000000, 0b00000000, |
| 1595 | // Offset 2. |
| 1596 | 0b10010100, // vsp = r4 (r4 < frame initial sp). |
| 1597 | 0b10010101, // vsp = r5 (r5 > frame initial sp). |
| 1598 | 0b10110000, // COMPLETE. |
| 1599 | }; |
| 1600 | |
| 1601 | auto unwind_info = ChromeUnwindInfoAndroid{ |
Tom Sepez | 10f7df1d78 | 2024-01-12 17:22:43 | [diff] [blame] | 1602 | unwind_instruction_table, |
| 1603 | function_offset_table, |
| 1604 | function_table, |
| 1605 | page_table, |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1606 | }; |
| 1607 | |
| 1608 | ModuleCache module_cache; |
| 1609 | const ModuleCache::Module* chrome_module = AddNativeModule( |
| 1610 | &module_cache, std::make_unique<TestModule>( |
| 1611 | 0x1000, number_of_pages * page_size, "ChromeModule")); |
| 1612 | |
| 1613 | uintptr_t text_section_start_address = 0x1100; |
Tushar Agarwal | dcafb62 | 2022-11-30 17:32:27 | [diff] [blame] | 1614 | ChromeUnwinderAndroid unwinder(unwind_info, chrome_module->GetBaseAddress(), |
| 1615 | text_section_start_address); |
Charlie Hu | daf45ec | 2022-04-05 17:40:27 | [diff] [blame] | 1616 | |
| 1617 | unwinder.Initialize(&module_cache); |
| 1618 | uintptr_t pc = text_section_start_address + 0x20; |
| 1619 | |
| 1620 | AlignedStackMemory stack_memory = { |
| 1621 | 0xFFFF, |
| 1622 | 0xFFFF, |
| 1623 | }; |
| 1624 | std::vector<Frame> unwound_frames = {{pc, chrome_module}}; |
| 1625 | RegisterContext context; |
| 1626 | RegisterContextInstructionPointer(&context) = pc; |
| 1627 | RegisterContextStackPointer(&context) = stack_memory.stack_start_address(); |
| 1628 | |
| 1629 | context.arm_r4 = stack_memory.stack_start_address() - 2 * sizeof(uintptr_t); |
| 1630 | context.arm_r5 = stack_memory.stack_start_address() + 2 * sizeof(uintptr_t); |
| 1631 | |
| 1632 | // The address is outside chrome module, which will result the unwind to |
| 1633 | // stop with result kUnrecognizedFrame if the unwinder did not abort for other |
| 1634 | // reasons. |
| 1635 | context.arm_lr = |
| 1636 | text_section_start_address + (number_of_pages + 1) * page_size; |
| 1637 | |
| 1638 | EXPECT_EQ(UnwindResult::kAborted, |
| 1639 | unwinder.TryUnwind(&context, stack_memory.stack_end_address(), |
| 1640 | &unwound_frames)); |
| 1641 | ExpectFramesEq(std::vector<Frame>({{pc, chrome_module}}), unwound_frames); |
| 1642 | } |
| 1643 | |
Tom Sepez | 10f7df1d78 | 2024-01-12 17:22:43 | [diff] [blame] | 1644 | } // namespace base |