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 25namespace __tsan { 26 27#if !defined(SANITIZER_GO) 28 29#if defined(__x86_64__) 30/* 31C/C++ on linux/x86_64 and freebsd/x86_64 320000 0000 1000 - 0100 0000 0000: main binary and/or MAP_32BIT mappings 330100 0000 0000 - 0200 0000 0000: - 340200 0000 0000 - 1000 0000 0000: shadow 351000 0000 0000 - 3000 0000 0000: - 363000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects) 374000 0000 0000 - 6000 0000 0000: - 386000 0000 0000 - 6200 0000 0000: traces 396200 0000 0000 - 7d00 0000 0000: - 407d00 0000 0000 - 7e00 0000 0000: heap 417e00 0000 0000 - 7e80 0000 0000: - 427e80 0000 0000 - 8000 0000 0000: modules and main thread stack 43*/ 44struct 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/* 63C/C++ on linux/mips64 640100 0000 00 - 0200 0000 00: main binary 650200 0000 00 - 1400 0000 00: - 661400 0000 00 - 2400 0000 00: shadow 672400 0000 00 - 3000 0000 00: - 683000 0000 00 - 4000 0000 00: metainfo (memory blocks and sync objects) 694000 0000 00 - 6000 0000 00: - 706000 0000 00 - 6200 0000 00: traces 716200 0000 00 - fe00 0000 00: - 72fe00 0000 00 - ff00 0000 00: heap 73ff00 0000 00 - ff80 0000 00: - 74ff80 0000 00 - ffff ffff ff: modules and main thread stack 75*/ 76struct 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/* 101C/C++ on linux/aarch64 (39-bit VMA) 1020000 0010 00 - 0100 0000 00: main binary 1030100 0000 00 - 0800 0000 00: - 1040800 0000 00 - 2000 0000 00: shadow memory 1052000 0000 00 - 3100 0000 00: - 1063100 0000 00 - 3400 0000 00: metainfo 1073400 0000 00 - 5500 0000 00: - 1085500 0000 00 - 5600 0000 00: main binary (PIE) 1095600 0000 00 - 6000 0000 00: - 1106000 0000 00 - 6200 0000 00: traces 1116200 0000 00 - 7d00 0000 00: - 1127c00 0000 00 - 7d00 0000 00: heap 1137d00 0000 00 - 7fff ffff ff: modules and main thread stack 114*/ 115struct 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/* 137C/C++ on linux/aarch64 (42-bit VMA) 13800000 0010 00 - 01000 0000 00: main binary 13901000 0000 00 - 10000 0000 00: - 14010000 0000 00 - 20000 0000 00: shadow memory 14120000 0000 00 - 26000 0000 00: - 14226000 0000 00 - 28000 0000 00: metainfo 14328000 0000 00 - 2aa00 0000 00: - 1442aa00 0000 00 - 2ab00 0000 00: main binary (PIE) 1452ab00 0000 00 - 36200 0000 00: - 14636200 0000 00 - 36240 0000 00: traces 14736240 0000 00 - 3e000 0000 00: - 1483e000 0000 00 - 3f000 0000 00: heap 1493f000 0000 00 - 3ffff ffff ff: modules and main thread stack 150*/ 151struct 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/* 184C/C++ on linux/powerpc64 (44-bit VMA) 1850000 0000 0100 - 0001 0000 0000: main binary 1860001 0000 0000 - 0001 0000 0000: - 1870001 0000 0000 - 0b00 0000 0000: shadow 1880b00 0000 0000 - 0b00 0000 0000: - 1890b00 0000 0000 - 0d00 0000 0000: metainfo (memory blocks and sync objects) 1900d00 0000 0000 - 0d00 0000 0000: - 1910d00 0000 0000 - 0f00 0000 0000: traces 1920f00 0000 0000 - 0f00 0000 0000: - 1930f00 0000 0000 - 0f50 0000 0000: heap 1940f50 0000 0000 - 0f60 0000 0000: - 1950f60 0000 0000 - 1000 0000 0000: modules and main thread stack 196*/ 197struct 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/* 216C/C++ on linux/powerpc64 (46-bit VMA) 2170000 0000 1000 - 0100 0000 0000: main binary 2180100 0000 0000 - 0200 0000 0000: - 2190100 0000 0000 - 1000 0000 0000: shadow 2201000 0000 0000 - 1000 0000 0000: - 2211000 0000 0000 - 2000 0000 0000: metainfo (memory blocks and sync objects) 2222000 0000 0000 - 2000 0000 0000: - 2232000 0000 0000 - 2200 0000 0000: traces 2242200 0000 0000 - 3d00 0000 0000: - 2253d00 0000 0000 - 3e00 0000 0000: heap 2263e00 0000 0000 - 3e80 0000 0000: - 2273e80 0000 0000 - 4000 0000 0000: modules and main thread stack 228*/ 229struct 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 2540000 0000 1000 - 0000 1000 0000: executable 2550000 1000 0000 - 00c0 0000 0000: - 25600c0 0000 0000 - 00e0 0000 0000: heap 25700e0 0000 0000 - 2000 0000 0000: - 2582000 0000 0000 - 2380 0000 0000: shadow 2592380 0000 0000 - 3000 0000 0000: - 2603000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects) 2614000 0000 0000 - 6000 0000 0000: - 2626000 0000 0000 - 6200 0000 0000: traces 2636200 0000 0000 - 8000 0000 0000: - 264*/ 265 266struct 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 2800000 0000 1000 - 0000 1000 0000: executable 2810000 1000 0000 - 00f8 0000 0000: - 28200c0 0000 0000 - 00e0 0000 0000: heap 28300e0 0000 0000 - 0100 0000 0000: - 2840100 0000 0000 - 0500 0000 0000: shadow 2850500 0000 0000 - 0560 0000 0000: - 2860560 0000 0000 - 0760 0000 0000: traces 2870760 0000 0000 - 07d0 0000 0000: metainfo (memory blocks and sync objects) 28807d0 0000 0000 - 8000 0000 0000: - 289*/ 290 291struct 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 308extern uptr vmaSize; 309#endif 310 311 312enum 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 334template<typename Mapping, int Type> 335uptr 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 362template<int Type> 363uptr 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 382ALWAYS_INLINE 383uptr LoAppMemBeg(void) { 384 return MappingArchImpl<MAPPING_LO_APP_BEG>(); 385} 386ALWAYS_INLINE 387uptr LoAppMemEnd(void) { 388 return MappingArchImpl<MAPPING_LO_APP_END>(); 389} 390 391#ifdef TSAN_MID_APP_RANGE 392ALWAYS_INLINE 393uptr MidAppMemBeg(void) { 394 return MappingArchImpl<MAPPING_MID_APP_BEG>(); 395} 396ALWAYS_INLINE 397uptr MidAppMemEnd(void) { 398 return MappingArchImpl<MAPPING_MID_APP_END>(); 399} 400#endif 401 402ALWAYS_INLINE 403uptr HeapMemBeg(void) { 404 return MappingArchImpl<MAPPING_HEAP_BEG>(); 405} 406ALWAYS_INLINE 407uptr HeapMemEnd(void) { 408 return MappingArchImpl<MAPPING_HEAP_END>(); 409} 410 411ALWAYS_INLINE 412uptr HiAppMemBeg(void) { 413 return MappingArchImpl<MAPPING_HI_APP_BEG>(); 414} 415ALWAYS_INLINE 416uptr HiAppMemEnd(void) { 417 return MappingArchImpl<MAPPING_HI_APP_END>(); 418} 419 420ALWAYS_INLINE 421uptr VdsoBeg(void) { 422 return MappingArchImpl<MAPPING_VDSO_BEG>(); 423} 424 425#else 426 427ALWAYS_INLINE 428uptr AppMemBeg(void) { 429 return MappingArchImpl<MAPPING_APP_BEG>(); 430} 431ALWAYS_INLINE 432uptr AppMemEnd(void) { 433 return MappingArchImpl<MAPPING_APP_END>(); 434} 435 436#endif 437 438static inline 439bool 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 471ALWAYS_INLINE 472uptr ShadowBeg(void) { 473 return MappingArchImpl<MAPPING_SHADOW_BEG>(); 474} 475ALWAYS_INLINE 476uptr ShadowEnd(void) { 477 return MappingArchImpl<MAPPING_SHADOW_END>(); 478} 479 480ALWAYS_INLINE 481uptr MetaShadowBeg(void) { 482 return MappingArchImpl<MAPPING_META_SHADOW_BEG>(); 483} 484ALWAYS_INLINE 485uptr MetaShadowEnd(void) { 486 return MappingArchImpl<MAPPING_META_SHADOW_END>(); 487} 488 489ALWAYS_INLINE 490uptr TraceMemBeg(void) { 491 return MappingArchImpl<MAPPING_TRACE_BEG>(); 492} 493ALWAYS_INLINE 494uptr TraceMemEnd(void) { 495 return MappingArchImpl<MAPPING_TRACE_END>(); 496} 497 498 499template<typename Mapping> 500bool 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 513ALWAYS_INLINE 514bool 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 533template<typename Mapping> 534bool IsShadowMemImpl(uptr mem) { 535 return mem >= Mapping::kShadowBeg && mem <= Mapping::kShadowEnd; 536} 537 538ALWAYS_INLINE 539bool 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 558template<typename Mapping> 559bool IsMetaMemImpl(uptr mem) { 560 return mem >= Mapping::kMetaShadowBeg && mem <= Mapping::kMetaShadowEnd; 561} 562 563ALWAYS_INLINE 564bool 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 583template<typename Mapping> 584uptr 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 return ((x & ~(kShadowCell - 1)) * kShadowCnt) | Mapping::kShadowBeg; 591#endif 592} 593 594ALWAYS_INLINE 595uptr MemToShadow(uptr x) { 596#ifdef __aarch64__ 597 if (vmaSize == 39) 598 return MemToShadowImpl<Mapping39>(x); 599 else 600 return MemToShadowImpl<Mapping42>(x); 601 DCHECK(0); 602#elif defined(__powerpc64__) 603 if (vmaSize == 44) 604 return MemToShadowImpl<Mapping44>(x); 605 else 606 return MemToShadowImpl<Mapping46>(x); 607 DCHECK(0); 608#else 609 return MemToShadowImpl<Mapping>(x); 610#endif 611} 612 613 614template<typename Mapping> 615u32 *MemToMetaImpl(uptr x) { 616 DCHECK(IsAppMem(x)); 617#ifndef SANITIZER_GO 618 return (u32*)(((((x) & ~(Mapping::kAppMemMsk | (kMetaShadowCell - 1))) 619 ^ Mapping::kAppMemXor) / kMetaShadowCell * kMetaShadowSize) 620 | Mapping::kMetaShadowBeg); 621#else 622 return (u32*)(((x & ~(kMetaShadowCell - 1)) / \ 623 kMetaShadowCell * kMetaShadowSize) | Mapping::kMetaShadowBeg); 624#endif 625} 626 627ALWAYS_INLINE 628u32 *MemToMeta(uptr x) { 629#ifdef __aarch64__ 630 if (vmaSize == 39) 631 return MemToMetaImpl<Mapping39>(x); 632 else 633 return MemToMetaImpl<Mapping42>(x); 634 DCHECK(0); 635#elif defined(__powerpc64__) 636 if (vmaSize == 44) 637 return MemToMetaImpl<Mapping44>(x); 638 else 639 return MemToMetaImpl<Mapping46>(x); 640 DCHECK(0); 641#else 642 return MemToMetaImpl<Mapping>(x); 643#endif 644} 645 646 647template<typename Mapping> 648uptr ShadowToMemImpl(uptr s) { 649 DCHECK(IsShadowMem(s)); 650#ifndef SANITIZER_GO 651 if (s >= MemToShadow(Mapping::kLoAppMemBeg) 652 && s <= MemToShadow(Mapping::kLoAppMemEnd - 1)) 653 return (s / kShadowCnt) ^ Mapping::kAppMemXor; 654# ifdef TSAN_MID_APP_RANGE 655 if (s >= MemToShadow(Mapping::kMidAppMemBeg) 656 && s <= MemToShadow(Mapping::kMidAppMemEnd - 1)) 657 return ((s / kShadowCnt) ^ Mapping::kAppMemXor) + Mapping::kMidShadowOff; 658# endif 659 else 660 return ((s / kShadowCnt) ^ Mapping::kAppMemXor) | Mapping::kAppMemMsk; 661#else 662# ifndef SANITIZER_WINDOWS 663 return (s & ~Mapping::kShadowBeg) / kShadowCnt; 664# else 665 // FIXME(dvyukov): this is most likely wrong as the mapping is not bijection. 666 return (s - Mapping::kShadowBeg) / kShadowCnt; 667# endif // SANITIZER_WINDOWS 668#endif 669} 670 671ALWAYS_INLINE 672uptr ShadowToMem(uptr s) { 673#ifdef __aarch64__ 674 if (vmaSize == 39) 675 return ShadowToMemImpl<Mapping39>(s); 676 else 677 return ShadowToMemImpl<Mapping42>(s); 678 DCHECK(0); 679#elif defined(__powerpc64__) 680 if (vmaSize == 44) 681 return ShadowToMemImpl<Mapping44>(s); 682 else 683 return ShadowToMemImpl<Mapping46>(s); 684 DCHECK(0); 685#else 686 return ShadowToMemImpl<Mapping>(s); 687#endif 688} 689 690 691 692// The additional page is to catch shadow stack overflow as paging fault. 693// Windows wants 64K alignment for mmaps. 694const uptr kTotalTraceSize = (kTraceSize * sizeof(Event) + sizeof(Trace) 695 + (64 << 10) + (64 << 10) - 1) & ~((64 << 10) - 1); 696 697template<typename Mapping> 698uptr GetThreadTraceImpl(int tid) { 699 uptr p = Mapping::kTraceMemBeg + (uptr)tid * kTotalTraceSize; 700 DCHECK_LT(p, Mapping::kTraceMemEnd); 701 return p; 702} 703 704ALWAYS_INLINE 705uptr GetThreadTrace(int tid) { 706#ifdef __aarch64__ 707 if (vmaSize == 39) 708 return GetThreadTraceImpl<Mapping39>(tid); 709 else 710 return GetThreadTraceImpl<Mapping42>(tid); 711 DCHECK(0); 712#elif defined(__powerpc64__) 713 if (vmaSize == 44) 714 return GetThreadTraceImpl<Mapping44>(tid); 715 else 716 return GetThreadTraceImpl<Mapping46>(tid); 717 DCHECK(0); 718#else 719 return GetThreadTraceImpl<Mapping>(tid); 720#endif 721} 722 723 724template<typename Mapping> 725uptr GetThreadTraceHeaderImpl(int tid) { 726 uptr p = Mapping::kTraceMemBeg + (uptr)tid * kTotalTraceSize 727 + kTraceSize * sizeof(Event); 728 DCHECK_LT(p, Mapping::kTraceMemEnd); 729 return p; 730} 731 732ALWAYS_INLINE 733uptr GetThreadTraceHeader(int tid) { 734#ifdef __aarch64__ 735 if (vmaSize == 39) 736 return GetThreadTraceHeaderImpl<Mapping39>(tid); 737 else 738 return GetThreadTraceHeaderImpl<Mapping42>(tid); 739 DCHECK(0); 740#elif defined(__powerpc64__) 741 if (vmaSize == 44) 742 return GetThreadTraceHeaderImpl<Mapping44>(tid); 743 else 744 return GetThreadTraceHeaderImpl<Mapping46>(tid); 745 DCHECK(0); 746#else 747 return GetThreadTraceHeaderImpl<Mapping>(tid); 748#endif 749} 750 751void InitializePlatform(); 752void InitializePlatformEarly(); 753void CheckAndProtect(); 754void InitializeShadowMemoryPlatform(); 755void FlushShadowMemory(); 756void WriteMemoryProfile(char *buf, uptr buf_size, uptr nthread, uptr nlive); 757 758// Says whether the addr relates to a global var. 759// Guesses with high probability, may yield both false positives and negatives. 760bool IsGlobalVar(uptr addr); 761int ExtractResolvFDs(void *state, int *fds, int nfd); 762int ExtractRecvmsgFDs(void *msg, int *fds, int nfd); 763 764int call_pthread_cancel_with_cleanup(int(*fn)(void *c, void *m, 765 void *abstime), void *c, void *m, void *abstime, 766 void(*cleanup)(void *arg), void *arg); 767 768void DestroyThreadState(); 769 770} // namespace __tsan 771 772#endif // TSAN_PLATFORM_H 773