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1//===-- tsan_platform.h -----------------------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file is a part of ThreadSanitizer (TSan), a race detector.10//11// Platform-specific code.12//===----------------------------------------------------------------------===//13 14#ifndef TSAN_PLATFORM_H15#define TSAN_PLATFORM_H16 17#if !defined(__LP64__) && !defined(_WIN64)18# error "Only 64-bit is supported"19#endif20 21#include "sanitizer_common/sanitizer_common.h"22#include "tsan_defs.h"23 24namespace __tsan {25 26enum {27 // App memory is not mapped onto shadow memory range.28 kBrokenMapping = 1 << 0,29 // Mapping app memory and back does not produce the same address,30 // this can lead to wrong addresses in reports and potentially31 // other bad consequences.32 kBrokenReverseMapping = 1 << 1,33 // Mapping is non-linear for linear user range.34 // This is bad and can lead to unpredictable memory corruptions, etc35 // because range access functions assume linearity.36 kBrokenLinearity = 1 << 2,37 // Meta for an app region overlaps with the meta of another app region.38 // This is determined by recomputing the individual meta regions for39 // each app region.40 //41 // N.B. There is no "kBrokenReverseMetaMapping" constant because there42 // is no MetaToMem function. However, note that (!kBrokenLinearity43 // && !kBrokenAliasedMetas) implies that MemToMeta is invertible.44 kBrokenAliasedMetas = 1 << 3,45};46 47/*48C/C++ on linux/x86_64 and freebsd/x86_64490000 0000 1000 - 0200 0000 0000: main binary and/or MAP_32BIT mappings (2TB)500200 0000 0000 - 1000 0000 0000: -511000 0000 0000 - 3000 0000 0000: shadow (32TB)523000 0000 0000 - 3800 0000 0000: metainfo (memory blocks and sync objects; 8TB)533800 0000 0000 - 5500 0000 0000: -545500 0000 0000 - 5a00 0000 0000: pie binaries without ASLR or on 4.1+ kernels555a00 0000 0000 - 7200 0000 0000: -567200 0000 0000 - 7300 0000 0000: heap (1TB)577300 0000 0000 - 7a00 0000 0000: -587a00 0000 0000 - 8000 0000 0000: modules and main thread stack (6TB)59 60C/C++ on netbsd/amd64 can reuse the same mapping:61 * The address space starts from 0x1000 (option with 0x0) and ends with62 0x7f7ffffff000.63 * LoAppMem-kHeapMemEnd can be reused as it is.64 * No VDSO support.65 * No MidAppMem region.66 * No additional HeapMem region.67 * HiAppMem contains the stack, loader, shared libraries and heap.68 * Stack on NetBSD/amd64 has prereserved 128MB.69 * Heap grows downwards (top-down).70 * ASLR must be disabled per-process or globally.71*/72struct Mapping48AddressSpace {73 static const uptr kMetaShadowBeg = 0x300000000000ull;74 static const uptr kMetaShadowEnd = 0x380000000000ull;75 static const uptr kShadowBeg = 0x100000000000ull;76 static const uptr kShadowEnd = 0x300000000000ull;77 static const uptr kHeapMemBeg = 0x720000000000ull;78 static const uptr kHeapMemEnd = 0x730000000000ull;79 static const uptr kLoAppMemBeg = 0x000000001000ull;80 static const uptr kLoAppMemEnd = 0x020000000000ull;81 static const uptr kMidAppMemBeg = 0x550000000000ull;82 static const uptr kMidAppMemEnd = 0x5a0000000000ull;83 static const uptr kHiAppMemBeg = 0x7a0000000000ull;84 static const uptr kHiAppMemEnd = 0x800000000000ull;85 static const uptr kShadowMsk = 0x700000000000ull;86 static const uptr kShadowXor = 0x000000000000ull;87 static const uptr kShadowAdd = 0x100000000000ull;88 static const uptr kVdsoBeg = 0xf000000000000000ull;89};90 91/*92C/C++ on linux/mips64 (40-bit VMA)930000 0000 00 - 0100 0000 00: - (4 GB)940100 0000 00 - 0200 0000 00: main binary (4 GB)950200 0000 00 - 1200 0000 00: - (64 GB)961200 0000 00 - 2200 0000 00: shadow (64 GB)972200 0000 00 - 4000 0000 00: - (120 GB)984000 0000 00 - 5000 0000 00: metainfo (memory blocks and sync objects) (64 GB)995000 0000 00 - aa00 0000 00: - (360 GB)100aa00 0000 00 - ab00 0000 00: main binary (PIE) (4 GB)101ab00 0000 00 - fe00 0000 00: - (332 GB)102fe00 0000 00 - ff00 0000 00: heap (4 GB)103ff00 0000 00 - ff80 0000 00: - (2 GB)104ff80 0000 00 - ffff ffff ff: modules and main thread stack (<2 GB)105*/106struct MappingMips64_40 {107 static const uptr kMetaShadowBeg = 0x4000000000ull;108 static const uptr kMetaShadowEnd = 0x5000000000ull;109 static const uptr kShadowBeg = 0x1200000000ull;110 static const uptr kShadowEnd = 0x2200000000ull;111 static const uptr kHeapMemBeg = 0xfe00000000ull;112 static const uptr kHeapMemEnd = 0xff00000000ull;113 static const uptr kLoAppMemBeg = 0x0100000000ull;114 static const uptr kLoAppMemEnd = 0x0200000000ull;115 static const uptr kMidAppMemBeg = 0xaa00000000ull;116 static const uptr kMidAppMemEnd = 0xab00000000ull;117 static const uptr kHiAppMemBeg = 0xff80000000ull;118 static const uptr kHiAppMemEnd = 0xffffffffffull;119 static const uptr kShadowMsk = 0xf800000000ull;120 static const uptr kShadowXor = 0x0800000000ull;121 static const uptr kShadowAdd = 0x0000000000ull;122 static const uptr kVdsoBeg = 0xfffff00000ull;123};124 125/*126C/C++ on Darwin/iOS/ARM64 (36-bit VMA, 64 GB VM)1270000 0000 00 - 0100 0000 00: - (4 GB)1280100 0000 00 - 0200 0000 00: main binary, modules, thread stacks (4 GB)1290200 0000 00 - 0300 0000 00: heap (4 GB)1300300 0000 00 - 0400 0000 00: - (4 GB)1310400 0000 00 - 0800 0000 00: shadow memory (16 GB)1320800 0000 00 - 0d00 0000 00: - (20 GB)1330d00 0000 00 - 0e00 0000 00: metainfo (4 GB)1340e00 0000 00 - 1000 0000 00: -135*/136struct MappingAppleAarch64 {137 static const uptr kLoAppMemBeg = 0x0100000000ull;138 static const uptr kLoAppMemEnd = 0x0200000000ull;139 static const uptr kHeapMemBeg = 0x0200000000ull;140 static const uptr kHeapMemEnd = 0x0300000000ull;141 static const uptr kShadowBeg = 0x0400000000ull;142 static const uptr kShadowEnd = 0x0800000000ull;143 static const uptr kMetaShadowBeg = 0x0d00000000ull;144 static const uptr kMetaShadowEnd = 0x0e00000000ull;145 static const uptr kHiAppMemBeg = 0x0fc0000000ull;146 static const uptr kHiAppMemEnd = 0x0fc0000000ull;147 static const uptr kShadowMsk = 0x0ull;148 static const uptr kShadowXor = 0x0ull;149 static const uptr kShadowAdd = 0x0200000000ull;150 static const uptr kVdsoBeg = 0x7000000000000000ull;151 static const uptr kMidAppMemBeg = 0;152 static const uptr kMidAppMemEnd = 0;153};154 155/*156C/C++ on linux/aarch64 (39-bit VMA)1570000 0010 00 - 0500 0000 00: main binary (20 GB)1580100 0000 00 - 2000 0000 00: -1592000 0000 00 - 4000 0000 00: shadow memory (128 GB)1604000 0000 00 - 4800 0000 00: metainfo (32 GB)1614800 0000 00 - 5500 0000 00: -1625500 0000 00 - 5a00 0000 00: main binary (PIE) (20 GB)1635600 0000 00 - 7c00 0000 00: -1647a00 0000 00 - 7d00 0000 00: heap (12 GB)1657d00 0000 00 - 7fff ffff ff: modules and main thread stack (12 GB)166*/167struct MappingAarch64_39 {168 static const uptr kLoAppMemBeg = 0x0000001000ull;169 static const uptr kLoAppMemEnd = 0x0500000000ull;170 static const uptr kShadowBeg = 0x2000000000ull;171 static const uptr kShadowEnd = 0x4000000000ull;172 static const uptr kMetaShadowBeg = 0x4000000000ull;173 static const uptr kMetaShadowEnd = 0x4800000000ull;174 static const uptr kMidAppMemBeg = 0x5500000000ull;175 static const uptr kMidAppMemEnd = 0x5a00000000ull;176 static const uptr kHeapMemBeg = 0x7a00000000ull;177 static const uptr kHeapMemEnd = 0x7d00000000ull;178 static const uptr kHiAppMemBeg = 0x7d00000000ull;179 static const uptr kHiAppMemEnd = 0x7fffffffffull;180 static const uptr kShadowMsk = 0x7000000000ull;181 static const uptr kShadowXor = 0x1000000000ull;182 static const uptr kShadowAdd = 0x0000000000ull;183 static const uptr kVdsoBeg = 0x7f00000000ull;184};185 186/*187C/C++ on linux/aarch64 (42-bit VMA)18800000 0010 00 - 02000 0000 00: main binary (128 GB)18902000 0000 00 - 08000 0000 00: -19010000 0000 00 - 20000 0000 00: shadow memory (1024 GB)19120000 0000 00 - 24000 0000 00: metainfo (256 GB)19224000 0000 00 - 2aa00 0000 00: -1932aa00 0000 00 - 2c000 0000 00: main binary (PIE) (88 GB)1942c000 0000 00 - 3c000 0000 00: -1953c000 0000 00 - 3f000 0000 00: heap (192 GB)1963f000 0000 00 - 3ffff ffff ff: modules and main thread stack (64 GB)197*/198struct MappingAarch64_42 {199 static const uptr kLoAppMemBeg = 0x00000001000ull;200 static const uptr kLoAppMemEnd = 0x02000000000ull;201 static const uptr kShadowBeg = 0x10000000000ull;202 static const uptr kShadowEnd = 0x20000000000ull;203 static const uptr kMetaShadowBeg = 0x20000000000ull;204 static const uptr kMetaShadowEnd = 0x24000000000ull;205 static const uptr kMidAppMemBeg = 0x2aa00000000ull;206 static const uptr kMidAppMemEnd = 0x2c000000000ull;207 static const uptr kHeapMemBeg = 0x3c000000000ull;208 static const uptr kHeapMemEnd = 0x3f000000000ull;209 static const uptr kHiAppMemBeg = 0x3f000000000ull;210 static const uptr kHiAppMemEnd = 0x3ffffffffffull;211 static const uptr kShadowMsk = 0x38000000000ull;212 static const uptr kShadowXor = 0x08000000000ull;213 static const uptr kShadowAdd = 0x00000000000ull;214 static const uptr kVdsoBeg = 0x37f00000000ull;215};216 217/*218C/C++ on linux/aarch64 (48-bit VMA)2190000 0000 1000 - 0a00 0000 0000: main binary (10240 GB)2200a00 0000 1000 - 1554 0000 0000: -2211554 0000 1000 - 5400 0000 0000: shadow memory (64176 GB)2225400 0000 1000 - 8000 0000 0000: -2238000 0000 1000 - 0a00 0000 0000: metainfo (32768 GB)224a000 0000 1000 - aaaa 0000 0000: -225aaaa 0000 1000 - ac00 0000 0000: main binary (PIE) (1368 GB)226ac00 0000 1000 - fc00 0000 0000: -227fc00 0000 1000 - ffff ffff ffff: modules and main thread stack (4096 GB)228 229N.B. the shadow memory region has a strange start address, because it230contains the shadows for the mid, high and low app regions (in this231unusual order).232*/233struct MappingAarch64_48 {234 static const uptr kLoAppMemBeg = 0x0000000001000ull;235 static const uptr kLoAppMemEnd = 0x00a0000000000ull;236 static const uptr kShadowBeg = 0x0155400000000ull;237 static const uptr kShadowEnd = 0x0540000000000ull;238 static const uptr kMetaShadowBeg = 0x0800000000000ull;239 static const uptr kMetaShadowEnd = 0x0a00000000000ull;240 static const uptr kMidAppMemBeg = 0x0aaaa00000000ull;241 static const uptr kMidAppMemEnd = 0x0ac0000000000ull;242 static const uptr kHiAppMemBeg = 0x0fc0000000000ull;243 static const uptr kHiAppMemEnd = 0x1000000000000ull;244 static const uptr kHeapMemBeg = 0x0fc0000000000ull;245 static const uptr kHeapMemEnd = 0x0fc0000000000ull;246 static const uptr kShadowMsk = 0x0c00000000000ull;247 static const uptr kShadowXor = 0x0200000000000ull;248 static const uptr kShadowAdd = 0x0000000000000ull;249 static const uptr kVdsoBeg = 0xffff000000000ull;250};251 252/* C/C++ on linux/loongarch64 (47-bit VMA)2530000 0000 4000 - 0080 0000 0000: main binary2540080 0000 0000 - 0100 0000 0000: -2550100 0000 0000 - 1000 0000 0000: shadow memory2561000 0000 0000 - 3000 0000 0000: -2573000 0000 0000 - 3400 0000 0000: metainfo2583400 0000 0000 - 5555 0000 0000: -2595555 0000 0000 - 5556 0000 0000: main binary (PIE)2605556 0000 0000 - 7ffe 0000 0000: -2617ffe 0000 0000 - 7fff 0000 0000: heap2627fff 0000 0000 - 7fff 8000 0000: -2637fff 8000 0000 - 8000 0000 0000: modules and main thread stack264*/265struct MappingLoongArch64_47 {266 static const uptr kMetaShadowBeg = 0x300000000000ull;267 static const uptr kMetaShadowEnd = 0x340000000000ull;268 static const uptr kShadowBeg = 0x010000000000ull;269 static const uptr kShadowEnd = 0x100000000000ull;270 static const uptr kHeapMemBeg = 0x7ffe00000000ull;271 static const uptr kHeapMemEnd = 0x7fff00000000ull;272 static const uptr kLoAppMemBeg = 0x000000004000ull;273 static const uptr kLoAppMemEnd = 0x008000000000ull;274 static const uptr kMidAppMemBeg = 0x555500000000ull;275 static const uptr kMidAppMemEnd = 0x555600000000ull;276 static const uptr kHiAppMemBeg = 0x7fff80000000ull;277 static const uptr kHiAppMemEnd = 0x800000000000ull;278 static const uptr kShadowMsk = 0x780000000000ull;279 static const uptr kShadowXor = 0x040000000000ull;280 static const uptr kShadowAdd = 0x000000000000ull;281 static const uptr kVdsoBeg = 0x7fffffffc000ull;282};283 284/*285C/C++ on linux/powerpc64 (44-bit VMA)2860000 0000 0100 - 0001 0000 0000: main binary2870001 0000 0000 - 0001 0000 0000: -2880001 0000 0000 - 0b00 0000 0000: shadow2890b00 0000 0000 - 0b00 0000 0000: -2900b00 0000 0000 - 0d00 0000 0000: metainfo (memory blocks and sync objects)2910d00 0000 0000 - 0f00 0000 0000: -2920f00 0000 0000 - 0f50 0000 0000: heap2930f50 0000 0000 - 0f60 0000 0000: -2940f60 0000 0000 - 1000 0000 0000: modules and main thread stack295*/296struct MappingPPC64_44 {297 static const uptr kBroken = kBrokenMapping | kBrokenReverseMapping |298 kBrokenLinearity | kBrokenAliasedMetas;299 static const uptr kMetaShadowBeg = 0x0b0000000000ull;300 static const uptr kMetaShadowEnd = 0x0d0000000000ull;301 static const uptr kShadowBeg = 0x000100000000ull;302 static const uptr kShadowEnd = 0x0b0000000000ull;303 static const uptr kLoAppMemBeg = 0x000000000100ull;304 static const uptr kLoAppMemEnd = 0x000100000000ull;305 static const uptr kHeapMemBeg = 0x0f0000000000ull;306 static const uptr kHeapMemEnd = 0x0f5000000000ull;307 static const uptr kHiAppMemBeg = 0x0f6000000000ull;308 static const uptr kHiAppMemEnd = 0x100000000000ull; // 44 bits309 static const uptr kShadowMsk = 0x0f0000000000ull;310 static const uptr kShadowXor = 0x002100000000ull;311 static const uptr kShadowAdd = 0x000000000000ull;312 static const uptr kVdsoBeg = 0x3c0000000000000ull;313 static const uptr kMidAppMemBeg = 0;314 static const uptr kMidAppMemEnd = 0;315};316 317/*318C/C++ on linux/powerpc64 (46-bit VMA)3190000 0000 1000 - 0100 0000 0000: main binary3200100 0000 0000 - 0200 0000 0000: -3210100 0000 0000 - 0800 0000 0000: shadow3220800 0000 0000 - 1000 0000 0000: -3231000 0000 0000 - 1200 0000 0000: metainfo (memory blocks and sync objects)3241200 0000 0000 - 3d00 0000 0000: -3253d00 0000 0000 - 3e00 0000 0000: heap3263e00 0000 0000 - 3e80 0000 0000: -3273e80 0000 0000 - 4000 0000 0000: modules and main thread stack328*/329struct MappingPPC64_46 {330 static const uptr kMetaShadowBeg = 0x100000000000ull;331 static const uptr kMetaShadowEnd = 0x120000000000ull;332 static const uptr kShadowBeg = 0x010000000000ull;333 static const uptr kShadowEnd = 0x080000000000ull;334 static const uptr kHeapMemBeg = 0x3d0000000000ull;335 static const uptr kHeapMemEnd = 0x3e0000000000ull;336 static const uptr kLoAppMemBeg = 0x000000001000ull;337 static const uptr kLoAppMemEnd = 0x010000000000ull;338 static const uptr kHiAppMemBeg = 0x3e8000000000ull;339 static const uptr kHiAppMemEnd = 0x400000000000ull; // 46 bits340 static const uptr kShadowMsk = 0x3c0000000000ull;341 static const uptr kShadowXor = 0x020000000000ull;342 static const uptr kShadowAdd = 0x000000000000ull;343 static const uptr kVdsoBeg = 0x7800000000000000ull;344 static const uptr kMidAppMemBeg = 0;345 static const uptr kMidAppMemEnd = 0;346};347 348/*349C/C++ on linux/powerpc64 (47-bit VMA)3500000 0000 1000 - 0100 0000 0000: main binary3510100 0000 0000 - 0200 0000 0000: -3520100 0000 0000 - 0800 0000 0000: shadow3530800 0000 0000 - 1000 0000 0000: -3541000 0000 0000 - 1200 0000 0000: metainfo (memory blocks and sync objects)3551200 0000 0000 - 7d00 0000 0000: -3567d00 0000 0000 - 7e00 0000 0000: heap3577e00 0000 0000 - 7e80 0000 0000: -3587e80 0000 0000 - 8000 0000 0000: modules and main thread stack359*/360struct MappingPPC64_47 {361 static const uptr kMetaShadowBeg = 0x100000000000ull;362 static const uptr kMetaShadowEnd = 0x120000000000ull;363 static const uptr kShadowBeg = 0x010000000000ull;364 static const uptr kShadowEnd = 0x080000000000ull;365 static const uptr kHeapMemBeg = 0x7d0000000000ull;366 static const uptr kHeapMemEnd = 0x7e0000000000ull;367 static const uptr kLoAppMemBeg = 0x000000001000ull;368 static const uptr kLoAppMemEnd = 0x010000000000ull;369 static const uptr kHiAppMemBeg = 0x7e8000000000ull;370 static const uptr kHiAppMemEnd = 0x800000000000ull; // 47 bits371 static const uptr kShadowMsk = 0x7c0000000000ull;372 static const uptr kShadowXor = 0x020000000000ull;373 static const uptr kShadowAdd = 0x000000000000ull;374 static const uptr kVdsoBeg = 0x7800000000000000ull;375 static const uptr kMidAppMemBeg = 0;376 static const uptr kMidAppMemEnd = 0;377};378 379/*380C/C++ on linux/riscv64 (39-bit VMA)3810000 0010 00 - 0200 0000 00: main binary ( 8 GB)3820200 0000 00 - 1000 0000 00: -3831000 0000 00 - 4000 0000 00: shadow memory (64 GB)3844000 0000 00 - 4800 0000 00: metainfo (16 GB)3854800 0000 00 - 5500 0000 00: -3865500 0000 00 - 5a00 0000 00: main binary (PIE) (~8 GB)3875600 0000 00 - 7c00 0000 00: -3887d00 0000 00 - 7fff ffff ff: libraries and main thread stack ( 8 GB)389 390mmap by default allocates from top downwards391VDSO sits below loader and above dynamic libraries, within HiApp region.392Heap starts after program region whose position depends on pie or non-pie.393Disable tracking them since their locations are not fixed.394*/395struct MappingRiscv64_39 {396 static const uptr kLoAppMemBeg = 0x0000001000ull;397 static const uptr kLoAppMemEnd = 0x0200000000ull;398 static const uptr kShadowBeg = 0x1000000000ull;399 static const uptr kShadowEnd = 0x2000000000ull;400 static const uptr kMetaShadowBeg = 0x2000000000ull;401 static const uptr kMetaShadowEnd = 0x2400000000ull;402 static const uptr kMidAppMemBeg = 0x2aaaaaa000ull;403 static const uptr kMidAppMemEnd = 0x2c00000000ull;404 static const uptr kHeapMemBeg = 0x2c00000000ull;405 static const uptr kHeapMemEnd = 0x2c00000000ull;406 static const uptr kHiAppMemBeg = 0x3c00000000ull;407 static const uptr kHiAppMemEnd = 0x3fffffffffull;408 static const uptr kShadowMsk = 0x3800000000ull;409 static const uptr kShadowXor = 0x0800000000ull;410 static const uptr kShadowAdd = 0x0000000000ull;411 static const uptr kVdsoBeg = 0x4000000000ull;412};413 414/*415C/C++ on linux/riscv64 (48-bit VMA)4160000 0000 1000 - 0400 0000 0000: main binary ( 4 TB)4170500 0000 0000 - 2000 0000 0000: -4182000 0000 0000 - 4000 0000 0000: shadow memory (32 TB)4194000 0000 0000 - 4800 0000 0000: metainfo ( 8 TB)4204800 0000 0000 - 5555 5555 5000: -4215555 5555 5000 - 5a00 0000 0000: main binary (PIE) (~5 TB)4225a00 0000 0000 - 7a00 0000 0000: -4237a00 0000 0000 - 7fff ffff ffff: libraries and main thread stack ( 6 TB)424*/425struct MappingRiscv64_48 {426 static const uptr kLoAppMemBeg = 0x000000001000ull;427 static const uptr kLoAppMemEnd = 0x040000000000ull;428 static const uptr kShadowBeg = 0x200000000000ull;429 static const uptr kShadowEnd = 0x400000000000ull;430 static const uptr kMetaShadowBeg = 0x400000000000ull;431 static const uptr kMetaShadowEnd = 0x480000000000ull;432 static const uptr kMidAppMemBeg = 0x555555555000ull;433 static const uptr kMidAppMemEnd = 0x5a0000000000ull;434 static const uptr kHeapMemBeg = 0x5a0000000000ull;435 static const uptr kHeapMemEnd = 0x5a0000000000ull;436 static const uptr kHiAppMemBeg = 0x7a0000000000ull;437 static const uptr kHiAppMemEnd = 0x7fffffffffffull;438 static const uptr kShadowMsk = 0x700000000000ull;439 static const uptr kShadowXor = 0x100000000000ull;440 static const uptr kShadowAdd = 0x000000000000ull;441 static const uptr kVdsoBeg = 0x800000000000ull;442};443 444/*445C/C++ on linux/s390x446While the kernel provides a 64-bit address space, we have to restrict ourselves447to 48 bits due to how e.g. SyncVar::GetId() works.4480000 0000 1000 - 0e00 0000 0000: binary, modules, stacks - 14 TiB4490e00 0000 0000 - 2000 0000 0000: -4502000 0000 0000 - 4000 0000 0000: shadow - 32TiB (2 * app)4514000 0000 0000 - 9000 0000 0000: -4529000 0000 0000 - 9800 0000 0000: metainfo - 8TiB (0.5 * app)4539800 0000 0000 - be00 0000 0000: -454be00 0000 0000 - c000 0000 0000: heap - 2TiB (max supported by the allocator)455*/456struct MappingS390x {457 static const uptr kMetaShadowBeg = 0x900000000000ull;458 static const uptr kMetaShadowEnd = 0x980000000000ull;459 static const uptr kShadowBeg = 0x200000000000ull;460 static const uptr kShadowEnd = 0x400000000000ull;461 static const uptr kHeapMemBeg = 0xbe0000000000ull;462 static const uptr kHeapMemEnd = 0xc00000000000ull;463 static const uptr kLoAppMemBeg = 0x000000001000ull;464 static const uptr kLoAppMemEnd = 0x0e0000000000ull;465 static const uptr kHiAppMemBeg = 0xc00000004000ull;466 static const uptr kHiAppMemEnd = 0xc00000004000ull;467 static const uptr kShadowMsk = 0xb00000000000ull;468 static const uptr kShadowXor = 0x100000000000ull;469 static const uptr kShadowAdd = 0x000000000000ull;470 static const uptr kVdsoBeg = 0xfffffffff000ull;471 static const uptr kMidAppMemBeg = 0;472 static const uptr kMidAppMemEnd = 0;473};474 475/* Go on linux, darwin and freebsd on x86_644760000 0000 1000 - 0000 1000 0000: executable4770000 1000 0000 - 00c0 0000 0000: -47800c0 0000 0000 - 00e0 0000 0000: heap47900e0 0000 0000 - 2000 0000 0000: -4802000 0000 0000 - 21c0 0000 0000: shadow48121c0 0000 0000 - 3000 0000 0000: -4823000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects)4834000 0000 0000 - 8000 0000 0000: -484*/485 486struct MappingGo48 {487 static const uptr kMetaShadowBeg = 0x300000000000ull;488 static const uptr kMetaShadowEnd = 0x400000000000ull;489 static const uptr kShadowBeg = 0x200000000000ull;490 static const uptr kShadowEnd = 0x21c000000000ull;491 static const uptr kLoAppMemBeg = 0x000000001000ull;492 static const uptr kLoAppMemEnd = 0x00e000000000ull;493 static const uptr kMidAppMemBeg = 0;494 static const uptr kMidAppMemEnd = 0;495 static const uptr kHiAppMemBeg = 0;496 static const uptr kHiAppMemEnd = 0;497 static const uptr kHeapMemBeg = 0;498 static const uptr kHeapMemEnd = 0;499 static const uptr kVdsoBeg = 0;500 static const uptr kShadowMsk = 0;501 static const uptr kShadowXor = 0;502 static const uptr kShadowAdd = 0x200000000000ull;503};504 505/* Go on windows5060000 0000 1000 - 0000 1000 0000: executable5070000 1000 0000 - 00f8 0000 0000: -50800c0 0000 0000 - 00e0 0000 0000: heap50900e0 0000 0000 - 0100 0000 0000: -5100100 0000 0000 - 0300 0000 0000: shadow5110300 0000 0000 - 0700 0000 0000: -5120700 0000 0000 - 0770 0000 0000: metainfo (memory blocks and sync objects)51307d0 0000 0000 - 8000 0000 0000: -514PIE binaries currently not supported, but it should be theoretically possible.515*/516 517struct MappingGoWindows {518 static const uptr kMetaShadowBeg = 0x070000000000ull;519 static const uptr kMetaShadowEnd = 0x077000000000ull;520 static const uptr kShadowBeg = 0x010000000000ull;521 static const uptr kShadowEnd = 0x030000000000ull;522 static const uptr kLoAppMemBeg = 0x000000001000ull;523 static const uptr kLoAppMemEnd = 0x00e000000000ull;524 static const uptr kMidAppMemBeg = 0;525 static const uptr kMidAppMemEnd = 0;526 static const uptr kHiAppMemBeg = 0;527 static const uptr kHiAppMemEnd = 0;528 static const uptr kHeapMemBeg = 0;529 static const uptr kHeapMemEnd = 0;530 static const uptr kVdsoBeg = 0;531 static const uptr kShadowMsk = 0;532 static const uptr kShadowXor = 0;533 static const uptr kShadowAdd = 0x010000000000ull;534};535 536/* Go on linux/powerpc64 (46-bit VMA)5370000 0000 1000 - 0000 1000 0000: executable5380000 1000 0000 - 00c0 0000 0000: -53900c0 0000 0000 - 00e0 0000 0000: heap54000e0 0000 0000 - 2000 0000 0000: -5412000 0000 0000 - 21c0 0000 0000: shadow54221c0 0000 0000 - 2400 0000 0000: -5432400 0000 0000 - 2470 0000 0000: metainfo (memory blocks and sync objects)5442470 0000 0000 - 4000 0000 0000: -545*/546 547struct MappingGoPPC64_46 {548 static const uptr kMetaShadowBeg = 0x240000000000ull;549 static const uptr kMetaShadowEnd = 0x247000000000ull;550 static const uptr kShadowBeg = 0x200000000000ull;551 static const uptr kShadowEnd = 0x21c000000000ull;552 static const uptr kLoAppMemBeg = 0x000000001000ull;553 static const uptr kLoAppMemEnd = 0x00e000000000ull;554 static const uptr kMidAppMemBeg = 0;555 static const uptr kMidAppMemEnd = 0;556 static const uptr kHiAppMemBeg = 0;557 static const uptr kHiAppMemEnd = 0;558 static const uptr kHeapMemBeg = 0;559 static const uptr kHeapMemEnd = 0;560 static const uptr kVdsoBeg = 0;561 static const uptr kShadowMsk = 0;562 static const uptr kShadowXor = 0;563 static const uptr kShadowAdd = 0x200000000000ull;564};565 566/* Go on linux/powerpc64 (47-bit VMA)5670000 0000 1000 - 0000 1000 0000: executable5680000 1000 0000 - 00c0 0000 0000: -56900c0 0000 0000 - 00e0 0000 0000: heap57000e0 0000 0000 - 2000 0000 0000: -5712000 0000 0000 - 2800 0000 0000: shadow5722800 0000 0000 - 3000 0000 0000: -5733000 0000 0000 - 3200 0000 0000: metainfo (memory blocks and sync objects)5743200 0000 0000 - 8000 0000 0000: -575*/576 577struct MappingGoPPC64_47 {578 static const uptr kMetaShadowBeg = 0x300000000000ull;579 static const uptr kMetaShadowEnd = 0x320000000000ull;580 static const uptr kShadowBeg = 0x200000000000ull;581 static const uptr kShadowEnd = 0x280000000000ull;582 static const uptr kLoAppMemBeg = 0x000000001000ull;583 static const uptr kLoAppMemEnd = 0x00e000000000ull;584 static const uptr kMidAppMemBeg = 0;585 static const uptr kMidAppMemEnd = 0;586 static const uptr kHiAppMemBeg = 0;587 static const uptr kHiAppMemEnd = 0;588 static const uptr kHeapMemBeg = 0;589 static const uptr kHeapMemEnd = 0;590 static const uptr kVdsoBeg = 0;591 static const uptr kShadowMsk = 0;592 static const uptr kShadowXor = 0;593 static const uptr kShadowAdd = 0x200000000000ull;594};595 596/* Go on linux/aarch64 (48-bit VMA) and darwin/aarch64 (47-bit VMA)5970000 0000 1000 - 0000 1000 0000: executable5980000 1000 0000 - 00c0 0000 0000: -59900c0 0000 0000 - 00e0 0000 0000: heap60000e0 0000 0000 - 2000 0000 0000: -6012000 0000 0000 - 2800 0000 0000: shadow6022800 0000 0000 - 3000 0000 0000: -6033000 0000 0000 - 3200 0000 0000: metainfo (memory blocks and sync objects)6043200 0000 0000 - 8000 0000 0000: -605*/606struct MappingGoAarch64 {607 static const uptr kMetaShadowBeg = 0x300000000000ull;608 static const uptr kMetaShadowEnd = 0x320000000000ull;609 static const uptr kShadowBeg = 0x200000000000ull;610 static const uptr kShadowEnd = 0x280000000000ull;611 static const uptr kLoAppMemBeg = 0x000000001000ull;612 static const uptr kLoAppMemEnd = 0x00e000000000ull;613 static const uptr kMidAppMemBeg = 0;614 static const uptr kMidAppMemEnd = 0;615 static const uptr kHiAppMemBeg = 0;616 static const uptr kHiAppMemEnd = 0;617 static const uptr kHeapMemBeg = 0;618 static const uptr kHeapMemEnd = 0;619 static const uptr kVdsoBeg = 0;620 static const uptr kShadowMsk = 0;621 static const uptr kShadowXor = 0;622 static const uptr kShadowAdd = 0x200000000000ull;623};624 625/* Go on linux/loongarch64 (47-bit VMA)6260000 0000 1000 - 0000 1000 0000: executable6270000 1000 0000 - 00c0 0000 0000: -62800c0 0000 0000 - 00e0 0000 0000: heap62900e0 0000 0000 - 2000 0000 0000: -6302000 0000 0000 - 2800 0000 0000: shadow6312800 0000 0000 - 3000 0000 0000: -6323000 0000 0000 - 3200 0000 0000: metainfo (memory blocks and sync objects)6333200 0000 0000 - 8000 0000 0000: -634*/635struct MappingGoLoongArch64_47 {636 static const uptr kMetaShadowBeg = 0x300000000000ull;637 static const uptr kMetaShadowEnd = 0x320000000000ull;638 static const uptr kShadowBeg = 0x200000000000ull;639 static const uptr kShadowEnd = 0x280000000000ull;640 static const uptr kLoAppMemBeg = 0x000000001000ull;641 static const uptr kLoAppMemEnd = 0x00e000000000ull;642 static const uptr kMidAppMemBeg = 0;643 static const uptr kMidAppMemEnd = 0;644 static const uptr kHiAppMemBeg = 0;645 static const uptr kHiAppMemEnd = 0;646 static const uptr kHeapMemBeg = 0;647 static const uptr kHeapMemEnd = 0;648 static const uptr kVdsoBeg = 0;649 static const uptr kShadowMsk = 0;650 static const uptr kShadowXor = 0;651 static const uptr kShadowAdd = 0x200000000000ull;652};653 654/*655Go on linux/mips64 (47-bit VMA)6560000 0000 1000 - 0000 1000 0000: executable6570000 1000 0000 - 00c0 0000 0000: -65800c0 0000 0000 - 00e0 0000 0000: heap65900e0 0000 0000 - 2000 0000 0000: -6602000 0000 0000 - 2800 0000 0000: shadow6612800 0000 0000 - 3000 0000 0000: -6623000 0000 0000 - 3200 0000 0000: metainfo (memory blocks and sync objects)6633200 0000 0000 - 8000 0000 0000: -664*/665struct MappingGoMips64_47 {666 static const uptr kMetaShadowBeg = 0x300000000000ull;667 static const uptr kMetaShadowEnd = 0x320000000000ull;668 static const uptr kShadowBeg = 0x200000000000ull;669 static const uptr kShadowEnd = 0x280000000000ull;670 static const uptr kLoAppMemBeg = 0x000000001000ull;671 static const uptr kLoAppMemEnd = 0x00e000000000ull;672 static const uptr kMidAppMemBeg = 0;673 static const uptr kMidAppMemEnd = 0;674 static const uptr kHiAppMemBeg = 0;675 static const uptr kHiAppMemEnd = 0;676 static const uptr kHeapMemBeg = 0;677 static const uptr kHeapMemEnd = 0;678 static const uptr kVdsoBeg = 0;679 static const uptr kShadowMsk = 0;680 static const uptr kShadowXor = 0;681 static const uptr kShadowAdd = 0x200000000000ull;682};683 684/* Go on linux/riscv64 (39-bit VMA)6850000 0001 0000 - 000f 0000 0000: executable and heap (60 GiB)686000f 0000 0000 - 0010 0000 0000: -6870010 0000 0000 - 0030 0000 0000: shadow - 128 GiB ( ~ 2 * app)6880030 0000 0000 - 0038 0000 0000: metainfo - 32 GiB ( ~ 0.5 * app)6890038 0000 0000 - 0040 0000 0000: -690*/691struct MappingGoRiscv64_39 {692 static const uptr kMetaShadowBeg = 0x003000000000ull;693 static const uptr kMetaShadowEnd = 0x003800000000ull;694 static const uptr kShadowBeg = 0x001000000000ull;695 static const uptr kShadowEnd = 0x003000000000ull;696 static const uptr kLoAppMemBeg = 0x000000010000ull;697 static const uptr kLoAppMemEnd = 0x000f00000000ull;698 static const uptr kMidAppMemBeg = 0;699 static const uptr kMidAppMemEnd = 0;700 static const uptr kHiAppMemBeg = 0;701 static const uptr kHiAppMemEnd = 0;702 static const uptr kHeapMemBeg = 0;703 static const uptr kHeapMemEnd = 0;704 static const uptr kVdsoBeg = 0;705 static const uptr kShadowMsk = 0;706 static const uptr kShadowXor = 0;707 static const uptr kShadowAdd = 0x001000000000ull;708};709 710/* Go on linux/riscv64 (48-bit VMA)7110000 0001 0000 - 00e0 0000 0000: executable and heap (896 GiB)71200e0 0000 0000 - 2000 0000 0000: -7132000 0000 0000 - 2400 0000 0000: shadow - 4 TiB ( ~ 4 * app)7142400 0000 0000 - 3000 0000 0000: -7153000 0000 0000 - 3100 0000 0000: metainfo - 1 TiB ( ~ 1 * app)7163100 0000 0000 - 8000 0000 0000: -717*/718struct MappingGoRiscv64_48 {719 static const uptr kMetaShadowBeg = 0x300000000000ull;720 static const uptr kMetaShadowEnd = 0x310000000000ull;721 static const uptr kShadowBeg = 0x200000000000ull;722 static const uptr kShadowEnd = 0x240000000000ull;723 static const uptr kLoAppMemBeg = 0x000000010000ull;724 static const uptr kLoAppMemEnd = 0x00e000000000ull;725 static const uptr kMidAppMemBeg = 0;726 static const uptr kMidAppMemEnd = 0;727 static const uptr kHiAppMemBeg = 0;728 static const uptr kHiAppMemEnd = 0;729 static const uptr kHeapMemBeg = 0;730 static const uptr kHeapMemEnd = 0;731 static const uptr kVdsoBeg = 0;732 static const uptr kShadowMsk = 0;733 static const uptr kShadowXor = 0;734 static const uptr kShadowAdd = 0x200000000000ull;735};736 737/*738Go on linux/s390x7390000 0000 1000 - 1000 0000 0000: executable and heap - 16 TiB7401000 0000 0000 - 4000 0000 0000: -7414000 0000 0000 - 6000 0000 0000: shadow - 64TiB (4 * app)7426000 0000 0000 - 9000 0000 0000: -7439000 0000 0000 - 9800 0000 0000: metainfo - 8TiB (0.5 * app)744*/745struct MappingGoS390x {746 static const uptr kMetaShadowBeg = 0x900000000000ull;747 static const uptr kMetaShadowEnd = 0x980000000000ull;748 static const uptr kShadowBeg = 0x400000000000ull;749 static const uptr kShadowEnd = 0x600000000000ull;750 static const uptr kLoAppMemBeg = 0x000000001000ull;751 static const uptr kLoAppMemEnd = 0x100000000000ull;752 static const uptr kMidAppMemBeg = 0;753 static const uptr kMidAppMemEnd = 0;754 static const uptr kHiAppMemBeg = 0;755 static const uptr kHiAppMemEnd = 0;756 static const uptr kHeapMemBeg = 0;757 static const uptr kHeapMemEnd = 0;758 static const uptr kVdsoBeg = 0;759 static const uptr kShadowMsk = 0;760 static const uptr kShadowXor = 0;761 static const uptr kShadowAdd = 0x400000000000ull;762};763 764extern uptr vmaSize;765 766template <typename Func, typename Arg>767ALWAYS_INLINE auto SelectMapping(Arg arg) {768#if SANITIZER_GO769# if defined(__powerpc64__)770 switch (vmaSize) {771 case 46:772 return Func::template Apply<MappingGoPPC64_46>(arg);773 case 47:774 return Func::template Apply<MappingGoPPC64_47>(arg);775 }776# elif defined(__mips64)777 return Func::template Apply<MappingGoMips64_47>(arg);778# elif defined(__s390x__)779 return Func::template Apply<MappingGoS390x>(arg);780# elif defined(__aarch64__)781 return Func::template Apply<MappingGoAarch64>(arg);782# elif defined(__loongarch_lp64)783 return Func::template Apply<MappingGoLoongArch64_47>(arg);784# elif SANITIZER_RISCV64785 switch (vmaSize) {786 case 39:787 return Func::template Apply<MappingGoRiscv64_39>(arg);788 case 48:789 return Func::template Apply<MappingGoRiscv64_48>(arg);790 }791# elif SANITIZER_WINDOWS792 return Func::template Apply<MappingGoWindows>(arg);793# else794 return Func::template Apply<MappingGo48>(arg);795# endif796#else // SANITIZER_GO797# if SANITIZER_IOS && !SANITIZER_IOSSIM798 return Func::template Apply<MappingAppleAarch64>(arg);799# elif defined(__x86_64__) || SANITIZER_APPLE800 return Func::template Apply<Mapping48AddressSpace>(arg);801# elif defined(__aarch64__)802 switch (vmaSize) {803 case 39:804 return Func::template Apply<MappingAarch64_39>(arg);805 case 42:806 return Func::template Apply<MappingAarch64_42>(arg);807 case 48:808 return Func::template Apply<MappingAarch64_48>(arg);809 }810# elif SANITIZER_LOONGARCH64811 return Func::template Apply<MappingLoongArch64_47>(arg);812# elif defined(__powerpc64__)813 switch (vmaSize) {814 case 44:815 return Func::template Apply<MappingPPC64_44>(arg);816 case 46:817 return Func::template Apply<MappingPPC64_46>(arg);818 case 47:819 return Func::template Apply<MappingPPC64_47>(arg);820 }821# elif defined(__mips64)822 return Func::template Apply<MappingMips64_40>(arg);823# elif SANITIZER_RISCV64824 switch (vmaSize) {825 case 39:826 return Func::template Apply<MappingRiscv64_39>(arg);827 case 48:828 return Func::template Apply<MappingRiscv64_48>(arg);829 }830# elif defined(__s390x__)831 return Func::template Apply<MappingS390x>(arg);832# else833# error "unsupported platform"834# endif835#endif836 Die();837}838 839template <typename Func>840void ForEachMapping() {841 Func::template Apply<Mapping48AddressSpace>();842 Func::template Apply<MappingMips64_40>();843 Func::template Apply<MappingAppleAarch64>();844 Func::template Apply<MappingAarch64_39>();845 Func::template Apply<MappingAarch64_42>();846 Func::template Apply<MappingAarch64_48>();847 Func::template Apply<MappingLoongArch64_47>();848 Func::template Apply<MappingPPC64_44>();849 Func::template Apply<MappingPPC64_46>();850 Func::template Apply<MappingPPC64_47>();851 Func::template Apply<MappingRiscv64_39>();852 Func::template Apply<MappingRiscv64_48>();853 Func::template Apply<MappingS390x>();854 Func::template Apply<MappingGo48>();855 Func::template Apply<MappingGoWindows>();856 Func::template Apply<MappingGoPPC64_46>();857 Func::template Apply<MappingGoPPC64_47>();858 Func::template Apply<MappingGoAarch64>();859 Func::template Apply<MappingGoLoongArch64_47>();860 Func::template Apply<MappingGoMips64_47>();861 Func::template Apply<MappingGoRiscv64_39>();862 Func::template Apply<MappingGoRiscv64_48>();863 Func::template Apply<MappingGoS390x>();864}865 866enum MappingType {867 kLoAppMemBeg,868 kLoAppMemEnd,869 kHiAppMemBeg,870 kHiAppMemEnd,871 kMidAppMemBeg,872 kMidAppMemEnd,873 kHeapMemBeg,874 kHeapMemEnd,875 kShadowBeg,876 kShadowEnd,877 kMetaShadowBeg,878 kMetaShadowEnd,879 kVdsoBeg,880};881 882struct MappingField {883 template <typename Mapping>884 static uptr Apply(MappingType type) {885 switch (type) {886 case kLoAppMemBeg:887 return Mapping::kLoAppMemBeg;888 case kLoAppMemEnd:889 return Mapping::kLoAppMemEnd;890 case kMidAppMemBeg:891 return Mapping::kMidAppMemBeg;892 case kMidAppMemEnd:893 return Mapping::kMidAppMemEnd;894 case kHiAppMemBeg:895 return Mapping::kHiAppMemBeg;896 case kHiAppMemEnd:897 return Mapping::kHiAppMemEnd;898 case kHeapMemBeg:899 return Mapping::kHeapMemBeg;900 case kHeapMemEnd:901 return Mapping::kHeapMemEnd;902 case kVdsoBeg:903 return Mapping::kVdsoBeg;904 case kShadowBeg:905 return Mapping::kShadowBeg;906 case kShadowEnd:907 return Mapping::kShadowEnd;908 case kMetaShadowBeg:909 return Mapping::kMetaShadowBeg;910 case kMetaShadowEnd:911 return Mapping::kMetaShadowEnd;912 }913 Die();914 }915};916 917ALWAYS_INLINE918uptr LoAppMemBeg(void) { return SelectMapping<MappingField>(kLoAppMemBeg); }919ALWAYS_INLINE920uptr LoAppMemEnd(void) { return SelectMapping<MappingField>(kLoAppMemEnd); }921 922ALWAYS_INLINE923uptr MidAppMemBeg(void) { return SelectMapping<MappingField>(kMidAppMemBeg); }924ALWAYS_INLINE925uptr MidAppMemEnd(void) { return SelectMapping<MappingField>(kMidAppMemEnd); }926 927ALWAYS_INLINE928uptr HeapMemBeg(void) { return SelectMapping<MappingField>(kHeapMemBeg); }929ALWAYS_INLINE930uptr HeapMemEnd(void) { return SelectMapping<MappingField>(kHeapMemEnd); }931 932ALWAYS_INLINE933uptr HiAppMemBeg(void) { return SelectMapping<MappingField>(kHiAppMemBeg); }934ALWAYS_INLINE935uptr HiAppMemEnd(void) { return SelectMapping<MappingField>(kHiAppMemEnd); }936 937ALWAYS_INLINE938uptr VdsoBeg(void) { return SelectMapping<MappingField>(kVdsoBeg); }939 940ALWAYS_INLINE941uptr ShadowBeg(void) { return SelectMapping<MappingField>(kShadowBeg); }942ALWAYS_INLINE943uptr ShadowEnd(void) { return SelectMapping<MappingField>(kShadowEnd); }944 945ALWAYS_INLINE946uptr MetaShadowBeg(void) { return SelectMapping<MappingField>(kMetaShadowBeg); }947ALWAYS_INLINE948uptr MetaShadowEnd(void) { return SelectMapping<MappingField>(kMetaShadowEnd); }949 950struct IsAppMemImpl {951 template <typename Mapping>952 static bool Apply(uptr mem) {953 return (mem >= Mapping::kHeapMemBeg && mem < Mapping::kHeapMemEnd) ||954 (mem >= Mapping::kMidAppMemBeg && mem < Mapping::kMidAppMemEnd) ||955 (mem >= Mapping::kLoAppMemBeg && mem < Mapping::kLoAppMemEnd) ||956 (mem >= Mapping::kHiAppMemBeg && mem < Mapping::kHiAppMemEnd);957 }958};959 960ALWAYS_INLINE961bool IsAppMem(uptr mem) {962 return SelectMapping<IsAppMemImpl>(STRIP_MTE_TAG(mem));963}964 965struct IsShadowMemImpl {966 template <typename Mapping>967 static bool Apply(uptr mem) {968 return mem >= Mapping::kShadowBeg && mem < Mapping::kShadowEnd;969 }970};971 972ALWAYS_INLINE973bool IsShadowMem(RawShadow *p) {974 return SelectMapping<IsShadowMemImpl>(reinterpret_cast<uptr>(p));975}976 977struct IsMetaMemImpl {978 template <typename Mapping>979 static bool Apply(uptr mem) {980 return mem >= Mapping::kMetaShadowBeg && mem < Mapping::kMetaShadowEnd;981 }982};983 984ALWAYS_INLINE985bool IsMetaMem(const u32 *p) {986 return SelectMapping<IsMetaMemImpl>(reinterpret_cast<uptr>(p));987}988 989struct MemToShadowImpl {990 template <typename Mapping>991 static uptr Apply(uptr x) {992 DCHECK(IsAppMemImpl::Apply<Mapping>(x));993 return (((x) & ~(Mapping::kShadowMsk | (kShadowCell - 1))) ^994 Mapping::kShadowXor) *995 kShadowMultiplier +996 Mapping::kShadowAdd;997 }998};999 1000ALWAYS_INLINE1001RawShadow *MemToShadow(uptr x) {1002 return reinterpret_cast<RawShadow*>(1003 SelectMapping<MemToShadowImpl>(STRIP_MTE_TAG(x)));1004}1005 1006struct MemToMetaImpl {1007 template <typename Mapping>1008 static u32 *Apply(uptr x) {1009 DCHECK(IsAppMemImpl::Apply<Mapping>(x));1010 return (u32 *)(((((x) & ~(Mapping::kShadowMsk | (kMetaShadowCell - 1)))) /1011 kMetaShadowCell * kMetaShadowSize) |1012 Mapping::kMetaShadowBeg);1013 }1014};1015 1016ALWAYS_INLINE1017u32* MemToMeta(uptr x) {1018 return SelectMapping<MemToMetaImpl>(STRIP_MTE_TAG(x));1019}1020 1021struct ShadowToMemImpl {1022 template <typename Mapping>1023 static uptr Apply(uptr sp) {1024 if (!IsShadowMemImpl::Apply<Mapping>(sp))1025 return 0;1026 // The shadow mapping is non-linear and we've lost some bits, so we don't1027 // have an easy way to restore the original app address. But the mapping is1028 // a bijection, so we try to restore the address as belonging to1029 // low/mid/high range consecutively and see if shadow->app->shadow mapping1030 // gives us the same address.1031 uptr p =1032 ((sp - Mapping::kShadowAdd) / kShadowMultiplier) ^ Mapping::kShadowXor;1033 if (p >= Mapping::kLoAppMemBeg && p < Mapping::kLoAppMemEnd &&1034 MemToShadowImpl::Apply<Mapping>(p) == sp)1035 return p;1036 if (Mapping::kMidAppMemBeg) {1037 uptr p_mid = p + (Mapping::kMidAppMemBeg & Mapping::kShadowMsk);1038 if (p_mid >= Mapping::kMidAppMemBeg && p_mid < Mapping::kMidAppMemEnd &&1039 MemToShadowImpl::Apply<Mapping>(p_mid) == sp)1040 return p_mid;1041 }1042 return p | Mapping::kShadowMsk;1043 }1044};1045 1046ALWAYS_INLINE1047uptr ShadowToMem(RawShadow *s) {1048 return SelectMapping<ShadowToMemImpl>(reinterpret_cast<uptr>(s));1049}1050 1051// Compresses addr to kCompressedAddrBits stored in least significant bits.1052ALWAYS_INLINE uptr CompressAddr(uptr addr) {1053 return addr & ((1ull << kCompressedAddrBits) - 1);1054}1055 1056struct RestoreAddrImpl {1057 typedef uptr Result;1058 template <typename Mapping>1059 static Result Apply(uptr addr) {1060 // To restore the address we go over all app memory ranges and check if top1061 // 3 bits of the compressed addr match that of the app range. If yes, we1062 // assume that the compressed address come from that range and restore the1063 // missing top bits to match the app range address.1064 const uptr ranges[] = {1065 Mapping::kLoAppMemBeg, Mapping::kLoAppMemEnd, Mapping::kMidAppMemBeg,1066 Mapping::kMidAppMemEnd, Mapping::kHiAppMemBeg, Mapping::kHiAppMemEnd,1067 Mapping::kHeapMemBeg, Mapping::kHeapMemEnd,1068 };1069 const uptr indicator = 0x0e0000000000ull;1070 const uptr ind_lsb = 1ull << LeastSignificantSetBitIndex(indicator);1071 for (uptr i = 0; i < ARRAY_SIZE(ranges); i += 2) {1072 uptr beg = ranges[i];1073 uptr end = ranges[i + 1];1074 if (beg == end)1075 continue;1076 for (uptr p = beg; p < end; p = RoundDown(p + ind_lsb, ind_lsb)) {1077 if ((addr & indicator) == (p & indicator))1078 return addr | (p & ~(ind_lsb - 1));1079 }1080 }1081 Printf("ThreadSanitizer: failed to restore address 0x%zx\n", addr);1082 Die();1083 }1084};1085 1086// Restores compressed addr from kCompressedAddrBits to full representation.1087// This is called only during reporting and is not performance-critical.1088inline uptr RestoreAddr(uptr addr) {1089 return SelectMapping<RestoreAddrImpl>(addr);1090}1091 1092void InitializePlatform();1093void InitializePlatformEarly();1094bool CheckAndProtect(bool protect, bool ignore_heap, bool print_warnings);1095void InitializeShadowMemoryPlatform();1096void WriteMemoryProfile(char *buf, uptr buf_size, u64 uptime_ns);1097int ExtractResolvFDs(void *state, int *fds, int nfd);1098int ExtractRecvmsgFDs(void *msg, int *fds, int nfd);1099uptr ExtractLongJmpSp(uptr *env);1100void ImitateTlsWrite(ThreadState *thr, uptr tls_addr, uptr tls_size);1101 1102int call_pthread_cancel_with_cleanup(int (*fn)(void *arg),1103 void (*cleanup)(void *arg), void *arg);1104 1105void DestroyThreadState();1106void PlatformCleanUpThreadState(ThreadState *thr);1107 1108} // namespace __tsan1109 1110#endif // TSAN_PLATFORM_H1111