1 //===-- tsan_platform.h -----------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file is a part of ThreadSanitizer (TSan), a race detector. 11 // 12 // Platform-specific code. 13 //===----------------------------------------------------------------------===// 14 15 #ifndef TSAN_PLATFORM_H 16 #define TSAN_PLATFORM_H 17 18 #if !defined(__LP64__) && !defined(_WIN64) 19 # error "Only 64-bit is supported" 20 #endif 21 22 #include "tsan_defs.h" 23 #include "tsan_trace.h" 24 25 namespace __tsan { 26 27 #if !defined(SANITIZER_GO) 28 29 #if defined(__x86_64__) 30 /* 31 C/C++ on linux/x86_64 and freebsd/x86_64 32 0000 0000 1000 - 0100 0000 0000: main binary and/or MAP_32BIT mappings 33 0100 0000 0000 - 0200 0000 0000: - 34 0200 0000 0000 - 1000 0000 0000: shadow 35 1000 0000 0000 - 3000 0000 0000: - 36 3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects) 37 4000 0000 0000 - 6000 0000 0000: - 38 6000 0000 0000 - 6200 0000 0000: traces 39 6200 0000 0000 - 7d00 0000 0000: - 40 7d00 0000 0000 - 7e00 0000 0000: heap 41 7e00 0000 0000 - 7e80 0000 0000: - 42 7e80 0000 0000 - 8000 0000 0000: modules and main thread stack 43 */ 44 struct Mapping { 45 static const uptr kMetaShadowBeg = 0x300000000000ull; 46 static const uptr kMetaShadowEnd = 0x400000000000ull; 47 static const uptr kTraceMemBeg = 0x600000000000ull; 48 static const uptr kTraceMemEnd = 0x620000000000ull; 49 static const uptr kShadowBeg = 0x020000000000ull; 50 static const uptr kShadowEnd = 0x100000000000ull; 51 static const uptr kHeapMemBeg = 0x7d0000000000ull; 52 static const uptr kHeapMemEnd = 0x7e0000000000ull; 53 static const uptr kLoAppMemBeg = 0x000000001000ull; 54 static const uptr kLoAppMemEnd = 0x010000000000ull; 55 static const uptr kHiAppMemBeg = 0x7e8000000000ull; 56 static const uptr kHiAppMemEnd = 0x800000000000ull; 57 static const uptr kAppMemMsk = 0x7c0000000000ull; 58 static const uptr kAppMemXor = 0x020000000000ull; 59 static const uptr kVdsoBeg = 0xf000000000000000ull; 60 }; 61 #elif defined(__mips64) 62 /* 63 C/C++ on linux/mips64 64 0100 0000 00 - 0200 0000 00: main binary 65 0200 0000 00 - 1400 0000 00: - 66 1400 0000 00 - 2400 0000 00: shadow 67 2400 0000 00 - 3000 0000 00: - 68 3000 0000 00 - 4000 0000 00: metainfo (memory blocks and sync objects) 69 4000 0000 00 - 6000 0000 00: - 70 6000 0000 00 - 6200 0000 00: traces 71 6200 0000 00 - fe00 0000 00: - 72 fe00 0000 00 - ff00 0000 00: heap 73 ff00 0000 00 - ff80 0000 00: - 74 ff80 0000 00 - ffff ffff ff: modules and main thread stack 75 */ 76 struct Mapping { 77 static const uptr kMetaShadowBeg = 0x3000000000ull; 78 static const uptr kMetaShadowEnd = 0x4000000000ull; 79 static const uptr kTraceMemBeg = 0x6000000000ull; 80 static const uptr kTraceMemEnd = 0x6200000000ull; 81 static const uptr kShadowBeg = 0x1400000000ull; 82 static const uptr kShadowEnd = 0x2400000000ull; 83 static const uptr kHeapMemBeg = 0xfe00000000ull; 84 static const uptr kHeapMemEnd = 0xff00000000ull; 85 static const uptr kLoAppMemBeg = 0x0100000000ull; 86 static const uptr kLoAppMemEnd = 0x0200000000ull; 87 static const uptr kHiAppMemBeg = 0xff80000000ull; 88 static const uptr kHiAppMemEnd = 0xffffffffffull; 89 static const uptr kAppMemMsk = 0xfc00000000ull; 90 static const uptr kAppMemXor = 0x0400000000ull; 91 static const uptr kVdsoBeg = 0xfffff00000ull; 92 }; 93 #elif defined(__aarch64__) 94 // AArch64 supports multiple VMA which leads to multiple address transformation 95 // functions. To support these multiple VMAS transformations and mappings TSAN 96 // runtime for AArch64 uses an external memory read (vmaSize) to select which 97 // mapping to use. Although slower, it make a same instrumented binary run on 98 // multiple kernels. 99 100 /* 101 C/C++ on linux/aarch64 (39-bit VMA) 102 0000 0010 00 - 0100 0000 00: main binary 103 0100 0000 00 - 0800 0000 00: - 104 0800 0000 00 - 2000 0000 00: shadow memory 105 2000 0000 00 - 3100 0000 00: - 106 3100 0000 00 - 3400 0000 00: metainfo 107 3400 0000 00 - 5500 0000 00: - 108 5500 0000 00 - 5600 0000 00: main binary (PIE) 109 5600 0000 00 - 6000 0000 00: - 110 6000 0000 00 - 6200 0000 00: traces 111 6200 0000 00 - 7d00 0000 00: - 112 7c00 0000 00 - 7d00 0000 00: heap 113 7d00 0000 00 - 7fff ffff ff: modules and main thread stack 114 */ 115 struct Mapping39 { 116 static const uptr kLoAppMemBeg = 0x0000001000ull; 117 static const uptr kLoAppMemEnd = 0x0100000000ull; 118 static const uptr kShadowBeg = 0x0800000000ull; 119 static const uptr kShadowEnd = 0x2000000000ull; 120 static const uptr kMetaShadowBeg = 0x3100000000ull; 121 static const uptr kMetaShadowEnd = 0x3400000000ull; 122 static const uptr kMidAppMemBeg = 0x5500000000ull; 123 static const uptr kMidAppMemEnd = 0x5600000000ull; 124 static const uptr kMidShadowOff = 0x5000000000ull; 125 static const uptr kTraceMemBeg = 0x6000000000ull; 126 static const uptr kTraceMemEnd = 0x6200000000ull; 127 static const uptr kHeapMemBeg = 0x7c00000000ull; 128 static const uptr kHeapMemEnd = 0x7d00000000ull; 129 static const uptr kHiAppMemBeg = 0x7e00000000ull; 130 static const uptr kHiAppMemEnd = 0x7fffffffffull; 131 static const uptr kAppMemMsk = 0x7800000000ull; 132 static const uptr kAppMemXor = 0x0200000000ull; 133 static const uptr kVdsoBeg = 0x7f00000000ull; 134 }; 135 136 /* 137 C/C++ on linux/aarch64 (42-bit VMA) 138 00000 0010 00 - 01000 0000 00: main binary 139 01000 0000 00 - 10000 0000 00: - 140 10000 0000 00 - 20000 0000 00: shadow memory 141 20000 0000 00 - 26000 0000 00: - 142 26000 0000 00 - 28000 0000 00: metainfo 143 28000 0000 00 - 2aa00 0000 00: - 144 2aa00 0000 00 - 2ab00 0000 00: main binary (PIE) 145 2ab00 0000 00 - 36200 0000 00: - 146 36200 0000 00 - 36240 0000 00: traces 147 36240 0000 00 - 3e000 0000 00: - 148 3e000 0000 00 - 3f000 0000 00: heap 149 3f000 0000 00 - 3ffff ffff ff: modules and main thread stack 150 */ 151 struct Mapping42 { 152 static const uptr kLoAppMemBeg = 0x00000001000ull; 153 static const uptr kLoAppMemEnd = 0x01000000000ull; 154 static const uptr kShadowBeg = 0x10000000000ull; 155 static const uptr kShadowEnd = 0x20000000000ull; 156 static const uptr kMetaShadowBeg = 0x26000000000ull; 157 static const uptr kMetaShadowEnd = 0x28000000000ull; 158 static const uptr kMidAppMemBeg = 0x2aa00000000ull; 159 static const uptr kMidAppMemEnd = 0x2ab00000000ull; 160 static const uptr kMidShadowOff = 0x28000000000ull; 161 static const uptr kTraceMemBeg = 0x36200000000ull; 162 static const uptr kTraceMemEnd = 0x36400000000ull; 163 static const uptr kHeapMemBeg = 0x3e000000000ull; 164 static const uptr kHeapMemEnd = 0x3f000000000ull; 165 static const uptr kHiAppMemBeg = 0x3f000000000ull; 166 static const uptr kHiAppMemEnd = 0x3ffffffffffull; 167 static const uptr kAppMemMsk = 0x3c000000000ull; 168 static const uptr kAppMemXor = 0x04000000000ull; 169 static const uptr kVdsoBeg = 0x37f00000000ull; 170 }; 171 172 // Indicates the runtime will define the memory regions at runtime. 173 #define TSAN_RUNTIME_VMA 1 174 // Indicates that mapping defines a mid range memory segment. 175 #define TSAN_MID_APP_RANGE 1 176 #elif defined(__powerpc64__) 177 // PPC64 supports multiple VMA which leads to multiple address transformation 178 // functions. To support these multiple VMAS transformations and mappings TSAN 179 // runtime for PPC64 uses an external memory read (vmaSize) to select which 180 // mapping to use. Although slower, it make a same instrumented binary run on 181 // multiple kernels. 182 183 /* 184 C/C++ on linux/powerpc64 (44-bit VMA) 185 0000 0000 0100 - 0001 0000 0000: main binary 186 0001 0000 0000 - 0001 0000 0000: - 187 0001 0000 0000 - 0b00 0000 0000: shadow 188 0b00 0000 0000 - 0b00 0000 0000: - 189 0b00 0000 0000 - 0d00 0000 0000: metainfo (memory blocks and sync objects) 190 0d00 0000 0000 - 0d00 0000 0000: - 191 0d00 0000 0000 - 0f00 0000 0000: traces 192 0f00 0000 0000 - 0f00 0000 0000: - 193 0f00 0000 0000 - 0f50 0000 0000: heap 194 0f50 0000 0000 - 0f60 0000 0000: - 195 0f60 0000 0000 - 1000 0000 0000: modules and main thread stack 196 */ 197 struct Mapping44 { 198 static const uptr kMetaShadowBeg = 0x0b0000000000ull; 199 static const uptr kMetaShadowEnd = 0x0d0000000000ull; 200 static const uptr kTraceMemBeg = 0x0d0000000000ull; 201 static const uptr kTraceMemEnd = 0x0f0000000000ull; 202 static const uptr kShadowBeg = 0x000100000000ull; 203 static const uptr kShadowEnd = 0x0b0000000000ull; 204 static const uptr kLoAppMemBeg = 0x000000000100ull; 205 static const uptr kLoAppMemEnd = 0x000100000000ull; 206 static const uptr kHeapMemBeg = 0x0f0000000000ull; 207 static const uptr kHeapMemEnd = 0x0f5000000000ull; 208 static const uptr kHiAppMemBeg = 0x0f6000000000ull; 209 static const uptr kHiAppMemEnd = 0x100000000000ull; // 44 bits 210 static const uptr kAppMemMsk = 0x0f0000000000ull; 211 static const uptr kAppMemXor = 0x002100000000ull; 212 static const uptr kVdsoBeg = 0x3c0000000000000ull; 213 }; 214 215 /* 216 C/C++ on linux/powerpc64 (46-bit VMA) 217 0000 0000 1000 - 0100 0000 0000: main binary 218 0100 0000 0000 - 0200 0000 0000: - 219 0100 0000 0000 - 1000 0000 0000: shadow 220 1000 0000 0000 - 1000 0000 0000: - 221 1000 0000 0000 - 2000 0000 0000: metainfo (memory blocks and sync objects) 222 2000 0000 0000 - 2000 0000 0000: - 223 2000 0000 0000 - 2200 0000 0000: traces 224 2200 0000 0000 - 3d00 0000 0000: - 225 3d00 0000 0000 - 3e00 0000 0000: heap 226 3e00 0000 0000 - 3e80 0000 0000: - 227 3e80 0000 0000 - 4000 0000 0000: modules and main thread stack 228 */ 229 struct Mapping46 { 230 static const uptr kMetaShadowBeg = 0x100000000000ull; 231 static const uptr kMetaShadowEnd = 0x200000000000ull; 232 static const uptr kTraceMemBeg = 0x200000000000ull; 233 static const uptr kTraceMemEnd = 0x220000000000ull; 234 static const uptr kShadowBeg = 0x010000000000ull; 235 static const uptr kShadowEnd = 0x100000000000ull; 236 static const uptr kHeapMemBeg = 0x3d0000000000ull; 237 static const uptr kHeapMemEnd = 0x3e0000000000ull; 238 static const uptr kLoAppMemBeg = 0x000000001000ull; 239 static const uptr kLoAppMemEnd = 0x010000000000ull; 240 static const uptr kHiAppMemBeg = 0x3e8000000000ull; 241 static const uptr kHiAppMemEnd = 0x400000000000ull; // 46 bits 242 static const uptr kAppMemMsk = 0x3c0000000000ull; 243 static const uptr kAppMemXor = 0x020000000000ull; 244 static const uptr kVdsoBeg = 0x7800000000000000ull; 245 }; 246 247 // Indicates the runtime will define the memory regions at runtime. 248 #define TSAN_RUNTIME_VMA 1 249 #endif 250 251 #elif defined(SANITIZER_GO) && !SANITIZER_WINDOWS 252 253 /* Go on linux, darwin and freebsd 254 0000 0000 1000 - 0000 1000 0000: executable 255 0000 1000 0000 - 00c0 0000 0000: - 256 00c0 0000 0000 - 00e0 0000 0000: heap 257 00e0 0000 0000 - 2000 0000 0000: - 258 2000 0000 0000 - 2380 0000 0000: shadow 259 2380 0000 0000 - 3000 0000 0000: - 260 3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects) 261 4000 0000 0000 - 6000 0000 0000: - 262 6000 0000 0000 - 6200 0000 0000: traces 263 6200 0000 0000 - 8000 0000 0000: - 264 */ 265 266 struct Mapping { 267 static const uptr kMetaShadowBeg = 0x300000000000ull; 268 static const uptr kMetaShadowEnd = 0x400000000000ull; 269 static const uptr kTraceMemBeg = 0x600000000000ull; 270 static const uptr kTraceMemEnd = 0x620000000000ull; 271 static const uptr kShadowBeg = 0x200000000000ull; 272 static const uptr kShadowEnd = 0x238000000000ull; 273 static const uptr kAppMemBeg = 0x000000001000ull; 274 static const uptr kAppMemEnd = 0x00e000000000ull; 275 }; 276 277 #elif defined(SANITIZER_GO) && SANITIZER_WINDOWS 278 279 /* Go on windows 280 0000 0000 1000 - 0000 1000 0000: executable 281 0000 1000 0000 - 00f8 0000 0000: - 282 00c0 0000 0000 - 00e0 0000 0000: heap 283 00e0 0000 0000 - 0100 0000 0000: - 284 0100 0000 0000 - 0500 0000 0000: shadow 285 0500 0000 0000 - 0560 0000 0000: - 286 0560 0000 0000 - 0760 0000 0000: traces 287 0760 0000 0000 - 07d0 0000 0000: metainfo (memory blocks and sync objects) 288 07d0 0000 0000 - 8000 0000 0000: - 289 */ 290 291 struct Mapping { 292 static const uptr kMetaShadowBeg = 0x076000000000ull; 293 static const uptr kMetaShadowEnd = 0x07d000000000ull; 294 static const uptr kTraceMemBeg = 0x056000000000ull; 295 static const uptr kTraceMemEnd = 0x076000000000ull; 296 static const uptr kShadowBeg = 0x010000000000ull; 297 static const uptr kShadowEnd = 0x050000000000ull; 298 static const uptr kAppMemBeg = 0x000000001000ull; 299 static const uptr kAppMemEnd = 0x00e000000000ull; 300 }; 301 302 #else 303 # error "Unknown platform" 304 #endif 305 306 307 #ifdef TSAN_RUNTIME_VMA 308 extern uptr vmaSize; 309 #endif 310 311 312 enum MappingType { 313 MAPPING_LO_APP_BEG, 314 MAPPING_LO_APP_END, 315 MAPPING_HI_APP_BEG, 316 MAPPING_HI_APP_END, 317 #ifdef TSAN_MID_APP_RANGE 318 MAPPING_MID_APP_BEG, 319 MAPPING_MID_APP_END, 320 #endif 321 MAPPING_HEAP_BEG, 322 MAPPING_HEAP_END, 323 MAPPING_APP_BEG, 324 MAPPING_APP_END, 325 MAPPING_SHADOW_BEG, 326 MAPPING_SHADOW_END, 327 MAPPING_META_SHADOW_BEG, 328 MAPPING_META_SHADOW_END, 329 MAPPING_TRACE_BEG, 330 MAPPING_TRACE_END, 331 MAPPING_VDSO_BEG, 332 }; 333 334 template<typename Mapping, int Type> 335 uptr MappingImpl(void) { 336 switch (Type) { 337 #ifndef SANITIZER_GO 338 case MAPPING_LO_APP_BEG: return Mapping::kLoAppMemBeg; 339 case MAPPING_LO_APP_END: return Mapping::kLoAppMemEnd; 340 # ifdef TSAN_MID_APP_RANGE 341 case MAPPING_MID_APP_BEG: return Mapping::kMidAppMemBeg; 342 case MAPPING_MID_APP_END: return Mapping::kMidAppMemEnd; 343 # endif 344 case MAPPING_HI_APP_BEG: return Mapping::kHiAppMemBeg; 345 case MAPPING_HI_APP_END: return Mapping::kHiAppMemEnd; 346 case MAPPING_HEAP_BEG: return Mapping::kHeapMemBeg; 347 case MAPPING_HEAP_END: return Mapping::kHeapMemEnd; 348 case MAPPING_VDSO_BEG: return Mapping::kVdsoBeg; 349 #else 350 case MAPPING_APP_BEG: return Mapping::kAppMemBeg; 351 case MAPPING_APP_END: return Mapping::kAppMemEnd; 352 #endif 353 case MAPPING_SHADOW_BEG: return Mapping::kShadowBeg; 354 case MAPPING_SHADOW_END: return Mapping::kShadowEnd; 355 case MAPPING_META_SHADOW_BEG: return Mapping::kMetaShadowBeg; 356 case MAPPING_META_SHADOW_END: return Mapping::kMetaShadowEnd; 357 case MAPPING_TRACE_BEG: return Mapping::kTraceMemBeg; 358 case MAPPING_TRACE_END: return Mapping::kTraceMemEnd; 359 } 360 } 361 362 template<int Type> 363 uptr MappingArchImpl(void) { 364 #ifdef __aarch64__ 365 if (vmaSize == 39) 366 return MappingImpl<Mapping39, Type>(); 367 else 368 return MappingImpl<Mapping42, Type>(); 369 DCHECK(0); 370 #elif defined(__powerpc64__) 371 if (vmaSize == 44) 372 return MappingImpl<Mapping44, Type>(); 373 else 374 return MappingImpl<Mapping46, Type>(); 375 DCHECK(0); 376 #else 377 return MappingImpl<Mapping, Type>(); 378 #endif 379 } 380 381 #ifndef SANITIZER_GO 382 ALWAYS_INLINE 383 uptr LoAppMemBeg(void) { 384 return MappingArchImpl<MAPPING_LO_APP_BEG>(); 385 } 386 ALWAYS_INLINE 387 uptr LoAppMemEnd(void) { 388 return MappingArchImpl<MAPPING_LO_APP_END>(); 389 } 390 391 #ifdef TSAN_MID_APP_RANGE 392 ALWAYS_INLINE 393 uptr MidAppMemBeg(void) { 394 return MappingArchImpl<MAPPING_MID_APP_BEG>(); 395 } 396 ALWAYS_INLINE 397 uptr MidAppMemEnd(void) { 398 return MappingArchImpl<MAPPING_MID_APP_END>(); 399 } 400 #endif 401 402 ALWAYS_INLINE 403 uptr HeapMemBeg(void) { 404 return MappingArchImpl<MAPPING_HEAP_BEG>(); 405 } 406 ALWAYS_INLINE 407 uptr HeapMemEnd(void) { 408 return MappingArchImpl<MAPPING_HEAP_END>(); 409 } 410 411 ALWAYS_INLINE 412 uptr HiAppMemBeg(void) { 413 return MappingArchImpl<MAPPING_HI_APP_BEG>(); 414 } 415 ALWAYS_INLINE 416 uptr HiAppMemEnd(void) { 417 return MappingArchImpl<MAPPING_HI_APP_END>(); 418 } 419 420 ALWAYS_INLINE 421 uptr VdsoBeg(void) { 422 return MappingArchImpl<MAPPING_VDSO_BEG>(); 423 } 424 425 #else 426 427 ALWAYS_INLINE 428 uptr AppMemBeg(void) { 429 return MappingArchImpl<MAPPING_APP_BEG>(); 430 } 431 ALWAYS_INLINE 432 uptr AppMemEnd(void) { 433 return MappingArchImpl<MAPPING_APP_END>(); 434 } 435 436 #endif 437 438 static inline 439 bool GetUserRegion(int i, uptr *start, uptr *end) { 440 switch (i) { 441 default: 442 return false; 443 #ifndef SANITIZER_GO 444 case 0: 445 *start = LoAppMemBeg(); 446 *end = LoAppMemEnd(); 447 return true; 448 case 1: 449 *start = HiAppMemBeg(); 450 *end = HiAppMemEnd(); 451 return true; 452 case 2: 453 *start = HeapMemBeg(); 454 *end = HeapMemEnd(); 455 return true; 456 # ifdef TSAN_MID_APP_RANGE 457 case 3: 458 *start = MidAppMemBeg(); 459 *end = MidAppMemEnd(); 460 return true; 461 # endif 462 #else 463 case 0: 464 *start = AppMemBeg(); 465 *end = AppMemEnd(); 466 return true; 467 #endif 468 } 469 } 470 471 ALWAYS_INLINE 472 uptr ShadowBeg(void) { 473 return MappingArchImpl<MAPPING_SHADOW_BEG>(); 474 } 475 ALWAYS_INLINE 476 uptr ShadowEnd(void) { 477 return MappingArchImpl<MAPPING_SHADOW_END>(); 478 } 479 480 ALWAYS_INLINE 481 uptr MetaShadowBeg(void) { 482 return MappingArchImpl<MAPPING_META_SHADOW_BEG>(); 483 } 484 ALWAYS_INLINE 485 uptr MetaShadowEnd(void) { 486 return MappingArchImpl<MAPPING_META_SHADOW_END>(); 487 } 488 489 ALWAYS_INLINE 490 uptr TraceMemBeg(void) { 491 return MappingArchImpl<MAPPING_TRACE_BEG>(); 492 } 493 ALWAYS_INLINE 494 uptr TraceMemEnd(void) { 495 return MappingArchImpl<MAPPING_TRACE_END>(); 496 } 497 498 499 template<typename Mapping> 500 bool IsAppMemImpl(uptr mem) { 501 #ifndef SANITIZER_GO 502 return (mem >= Mapping::kHeapMemBeg && mem < Mapping::kHeapMemEnd) || 503 # ifdef TSAN_MID_APP_RANGE 504 (mem >= Mapping::kMidAppMemBeg && mem < Mapping::kMidAppMemEnd) || 505 # endif 506 (mem >= Mapping::kLoAppMemBeg && mem < Mapping::kLoAppMemEnd) || 507 (mem >= Mapping::kHiAppMemBeg && mem < Mapping::kHiAppMemEnd); 508 #else 509 return mem >= Mapping::kAppMemBeg && mem < Mapping::kAppMemEnd; 510 #endif 511 } 512 513 ALWAYS_INLINE 514 bool IsAppMem(uptr mem) { 515 #ifdef __aarch64__ 516 if (vmaSize == 39) 517 return IsAppMemImpl<Mapping39>(mem); 518 else 519 return IsAppMemImpl<Mapping42>(mem); 520 DCHECK(0); 521 #elif defined(__powerpc64__) 522 if (vmaSize == 44) 523 return IsAppMemImpl<Mapping44>(mem); 524 else 525 return IsAppMemImpl<Mapping46>(mem); 526 DCHECK(0); 527 #else 528 return IsAppMemImpl<Mapping>(mem); 529 #endif 530 } 531 532 533 template<typename Mapping> 534 bool IsShadowMemImpl(uptr mem) { 535 return mem >= Mapping::kShadowBeg && mem <= Mapping::kShadowEnd; 536 } 537 538 ALWAYS_INLINE 539 bool IsShadowMem(uptr mem) { 540 #ifdef __aarch64__ 541 if (vmaSize == 39) 542 return IsShadowMemImpl<Mapping39>(mem); 543 else 544 return IsShadowMemImpl<Mapping42>(mem); 545 DCHECK(0); 546 #elif defined(__powerpc64__) 547 if (vmaSize == 44) 548 return IsShadowMemImpl<Mapping44>(mem); 549 else 550 return IsShadowMemImpl<Mapping46>(mem); 551 DCHECK(0); 552 #else 553 return IsShadowMemImpl<Mapping>(mem); 554 #endif 555 } 556 557 558 template<typename Mapping> 559 bool IsMetaMemImpl(uptr mem) { 560 return mem >= Mapping::kMetaShadowBeg && mem <= Mapping::kMetaShadowEnd; 561 } 562 563 ALWAYS_INLINE 564 bool IsMetaMem(uptr mem) { 565 #ifdef __aarch64__ 566 if (vmaSize == 39) 567 return IsMetaMemImpl<Mapping39>(mem); 568 else 569 return IsMetaMemImpl<Mapping42>(mem); 570 DCHECK(0); 571 #elif defined(__powerpc64__) 572 if (vmaSize == 44) 573 return IsMetaMemImpl<Mapping44>(mem); 574 else 575 return IsMetaMemImpl<Mapping46>(mem); 576 DCHECK(0); 577 #else 578 return IsMetaMemImpl<Mapping>(mem); 579 #endif 580 } 581 582 583 template<typename Mapping> 584 uptr MemToShadowImpl(uptr x) { 585 DCHECK(IsAppMem(x)); 586 #ifndef SANITIZER_GO 587 return (((x) & ~(Mapping::kAppMemMsk | (kShadowCell - 1))) 588 ^ Mapping::kAppMemXor) * kShadowCnt; 589 #else 590 # ifndef SANITIZER_WINDOWS 591 return ((x & ~(kShadowCell - 1)) * kShadowCnt) | Mapping::kShadowBeg; 592 # else 593 return ((x & ~(kShadowCell - 1)) * kShadowCnt) + Mapping::kShadowBeg; 594 # endif 595 #endif 596 } 597 598 ALWAYS_INLINE 599 uptr MemToShadow(uptr x) { 600 #ifdef __aarch64__ 601 if (vmaSize == 39) 602 return MemToShadowImpl<Mapping39>(x); 603 else 604 return MemToShadowImpl<Mapping42>(x); 605 DCHECK(0); 606 #elif defined(__powerpc64__) 607 if (vmaSize == 44) 608 return MemToShadowImpl<Mapping44>(x); 609 else 610 return MemToShadowImpl<Mapping46>(x); 611 DCHECK(0); 612 #else 613 return MemToShadowImpl<Mapping>(x); 614 #endif 615 } 616 617 618 template<typename Mapping> 619 u32 *MemToMetaImpl(uptr x) { 620 DCHECK(IsAppMem(x)); 621 #ifndef SANITIZER_GO 622 return (u32*)(((((x) & ~(Mapping::kAppMemMsk | (kMetaShadowCell - 1))) 623 ^ Mapping::kAppMemXor) / kMetaShadowCell * kMetaShadowSize) 624 | Mapping::kMetaShadowBeg); 625 #else 626 return (u32*)(((x & ~(kMetaShadowCell - 1)) / \ 627 kMetaShadowCell * kMetaShadowSize) | Mapping::kMetaShadowBeg); 628 #endif 629 } 630 631 ALWAYS_INLINE 632 u32 *MemToMeta(uptr x) { 633 #ifdef __aarch64__ 634 if (vmaSize == 39) 635 return MemToMetaImpl<Mapping39>(x); 636 else 637 return MemToMetaImpl<Mapping42>(x); 638 DCHECK(0); 639 #elif defined(__powerpc64__) 640 if (vmaSize == 44) 641 return MemToMetaImpl<Mapping44>(x); 642 else 643 return MemToMetaImpl<Mapping46>(x); 644 DCHECK(0); 645 #else 646 return MemToMetaImpl<Mapping>(x); 647 #endif 648 } 649 650 651 template<typename Mapping> 652 uptr ShadowToMemImpl(uptr s) { 653 DCHECK(IsShadowMem(s)); 654 #ifndef SANITIZER_GO 655 if (s >= MemToShadow(Mapping::kLoAppMemBeg) 656 && s <= MemToShadow(Mapping::kLoAppMemEnd - 1)) 657 return (s / kShadowCnt) ^ Mapping::kAppMemXor; 658 # ifdef TSAN_MID_APP_RANGE 659 if (s >= MemToShadow(Mapping::kMidAppMemBeg) 660 && s <= MemToShadow(Mapping::kMidAppMemEnd - 1)) 661 return ((s / kShadowCnt) ^ Mapping::kAppMemXor) + Mapping::kMidShadowOff; 662 # endif 663 else 664 return ((s / kShadowCnt) ^ Mapping::kAppMemXor) | Mapping::kAppMemMsk; 665 #else 666 # ifndef SANITIZER_WINDOWS 667 return (s & ~Mapping::kShadowBeg) / kShadowCnt; 668 # else 669 return (s - Mapping::kShadowBeg) / kShadowCnt; 670 # endif // SANITIZER_WINDOWS 671 #endif 672 } 673 674 ALWAYS_INLINE 675 uptr ShadowToMem(uptr s) { 676 #ifdef __aarch64__ 677 if (vmaSize == 39) 678 return ShadowToMemImpl<Mapping39>(s); 679 else 680 return ShadowToMemImpl<Mapping42>(s); 681 DCHECK(0); 682 #elif defined(__powerpc64__) 683 if (vmaSize == 44) 684 return ShadowToMemImpl<Mapping44>(s); 685 else 686 return ShadowToMemImpl<Mapping46>(s); 687 DCHECK(0); 688 #else 689 return ShadowToMemImpl<Mapping>(s); 690 #endif 691 } 692 693 694 695 // The additional page is to catch shadow stack overflow as paging fault. 696 // Windows wants 64K alignment for mmaps. 697 const uptr kTotalTraceSize = (kTraceSize * sizeof(Event) + sizeof(Trace) 698 + (64 << 10) + (64 << 10) - 1) & ~((64 << 10) - 1); 699 700 template<typename Mapping> 701 uptr GetThreadTraceImpl(int tid) { 702 uptr p = Mapping::kTraceMemBeg + (uptr)tid * kTotalTraceSize; 703 DCHECK_LT(p, Mapping::kTraceMemEnd); 704 return p; 705 } 706 707 ALWAYS_INLINE 708 uptr GetThreadTrace(int tid) { 709 #ifdef __aarch64__ 710 if (vmaSize == 39) 711 return GetThreadTraceImpl<Mapping39>(tid); 712 else 713 return GetThreadTraceImpl<Mapping42>(tid); 714 DCHECK(0); 715 #elif defined(__powerpc64__) 716 if (vmaSize == 44) 717 return GetThreadTraceImpl<Mapping44>(tid); 718 else 719 return GetThreadTraceImpl<Mapping46>(tid); 720 DCHECK(0); 721 #else 722 return GetThreadTraceImpl<Mapping>(tid); 723 #endif 724 } 725 726 727 template<typename Mapping> 728 uptr GetThreadTraceHeaderImpl(int tid) { 729 uptr p = Mapping::kTraceMemBeg + (uptr)tid * kTotalTraceSize 730 + kTraceSize * sizeof(Event); 731 DCHECK_LT(p, Mapping::kTraceMemEnd); 732 return p; 733 } 734 735 ALWAYS_INLINE 736 uptr GetThreadTraceHeader(int tid) { 737 #ifdef __aarch64__ 738 if (vmaSize == 39) 739 return GetThreadTraceHeaderImpl<Mapping39>(tid); 740 else 741 return GetThreadTraceHeaderImpl<Mapping42>(tid); 742 DCHECK(0); 743 #elif defined(__powerpc64__) 744 if (vmaSize == 44) 745 return GetThreadTraceHeaderImpl<Mapping44>(tid); 746 else 747 return GetThreadTraceHeaderImpl<Mapping46>(tid); 748 DCHECK(0); 749 #else 750 return GetThreadTraceHeaderImpl<Mapping>(tid); 751 #endif 752 } 753 754 void InitializePlatform(); 755 void InitializePlatformEarly(); 756 void CheckAndProtect(); 757 void InitializeShadowMemoryPlatform(); 758 void FlushShadowMemory(); 759 void WriteMemoryProfile(char *buf, uptr buf_size, uptr nthread, uptr nlive); 760 int ExtractResolvFDs(void *state, int *fds, int nfd); 761 int ExtractRecvmsgFDs(void *msg, int *fds, int nfd); 762 763 int call_pthread_cancel_with_cleanup(int(*fn)(void *c, void *m, 764 void *abstime), void *c, void *m, void *abstime, 765 void(*cleanup)(void *arg), void *arg); 766 767 void DestroyThreadState(); 768 769 } // namespace __tsan 770 771 #endif // TSAN_PLATFORM_H 772
