//===-- tsan_platform.h -----------------------------------------*- C++ -*-===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // This file is a part of ThreadSanitizer (TSan), a race detector. // // Platform-specific code. //===----------------------------------------------------------------------===// #ifndef TSAN_PLATFORM_H #define TSAN_PLATFORM_H #if !defined(__LP64__) && !defined(_WIN64) # error "Only 64-bit is supported" #endif #include "sanitizer_common/sanitizer_common.h" #include "tsan_defs.h" namespace __tsan { enum { // App memory is not mapped onto shadow memory range. kBrokenMapping = 1 << 0, // Mapping app memory and back does not produce the same address, // this can lead to wrong addresses in reports and potentially // other bad consequences. kBrokenReverseMapping = 1 << 1, // Mapping is non-linear for linear user range. // This is bad and can lead to unpredictable memory corruptions, etc // because range access functions assume linearity. kBrokenLinearity = 1 << 2, // Meta for an app region overlaps with the meta of another app region. // This is determined by recomputing the individual meta regions for // each app region. // // N.B. There is no "kBrokenReverseMetaMapping" constant because there // is no MetaToMem function. However, note that (!kBrokenLinearity // && !kBrokenAliasedMetas) implies that MemToMeta is invertible. kBrokenAliasedMetas = 1 << 3, }; /* C/C++ on linux/x86_64 and freebsd/x86_64 0000 0000 1000 - 0080 0000 0000: main binary and/or MAP_32BIT mappings (512GB) 0040 0000 0000 - 0100 0000 0000: - 0100 0000 0000 - 1000 0000 0000: shadow 1000 0000 0000 - 3000 0000 0000: - 3000 0000 0000 - 3400 0000 0000: metainfo (memory blocks and sync objects) 3400 0000 0000 - 5500 0000 0000: - 5500 0000 0000 - 5680 0000 0000: pie binaries without ASLR or on 4.1+ kernels 5680 0000 0000 - 7d00 0000 0000: - 7b00 0000 0000 - 7c00 0000 0000: heap 7c00 0000 0000 - 7e80 0000 0000: - 7e80 0000 0000 - 8000 0000 0000: modules and main thread stack C/C++ on netbsd/amd64 can reuse the same mapping: * The address space starts from 0x1000 (option with 0x0) and ends with 0x7f7ffffff000. * LoAppMem-kHeapMemEnd can be reused as it is. * No VDSO support. * No MidAppMem region. * No additional HeapMem region. * HiAppMem contains the stack, loader, shared libraries and heap. * Stack on NetBSD/amd64 has prereserved 128MB. * Heap grows downwards (top-down). * ASLR must be disabled per-process or globally. */ struct Mapping48AddressSpace { static const uptr kMetaShadowBeg = 0x300000000000ull; static const uptr kMetaShadowEnd = 0x340000000000ull; static const uptr kShadowBeg = 0x010000000000ull; static const uptr kShadowEnd = 0x100000000000ull; static const uptr kHeapMemBeg = 0x7b0000000000ull; static const uptr kHeapMemEnd = 0x7c0000000000ull; static const uptr kLoAppMemBeg = 0x000000001000ull; static const uptr kLoAppMemEnd = 0x008000000000ull; static const uptr kMidAppMemBeg = 0x550000000000ull; static const uptr kMidAppMemEnd = 0x568000000000ull; static const uptr kHiAppMemBeg = 0x7e8000000000ull; static const uptr kHiAppMemEnd = 0x800000000000ull; static const uptr kShadowMsk = 0x780000000000ull; static const uptr kShadowXor = 0x040000000000ull; static const uptr kShadowAdd = 0x000000000000ull; static const uptr kVdsoBeg = 0xf000000000000000ull; }; /* C/C++ on linux/mips64 (40-bit VMA) 0000 0000 00 - 0100 0000 00: - (4 GB) 0100 0000 00 - 0200 0000 00: main binary (4 GB) 0200 0000 00 - 1200 0000 00: - (64 GB) 1200 0000 00 - 2200 0000 00: shadow (64 GB) 2200 0000 00 - 4000 0000 00: - (120 GB) 4000 0000 00 - 5000 0000 00: metainfo (memory blocks and sync objects) (64 GB) 5000 0000 00 - aa00 0000 00: - (360 GB) aa00 0000 00 - ab00 0000 00: main binary (PIE) (4 GB) ab00 0000 00 - fe00 0000 00: - (332 GB) fe00 0000 00 - ff00 0000 00: heap (4 GB) ff00 0000 00 - ff80 0000 00: - (2 GB) ff80 0000 00 - ffff ffff ff: modules and main thread stack (<2 GB) */ struct MappingMips64_40 { static const uptr kMetaShadowBeg = 0x4000000000ull; static const uptr kMetaShadowEnd = 0x5000000000ull; static const uptr kShadowBeg = 0x1200000000ull; static const uptr kShadowEnd = 0x2200000000ull; static const uptr kHeapMemBeg = 0xfe00000000ull; static const uptr kHeapMemEnd = 0xff00000000ull; static const uptr kLoAppMemBeg = 0x0100000000ull; static const uptr kLoAppMemEnd = 0x0200000000ull; static const uptr kMidAppMemBeg = 0xaa00000000ull; static const uptr kMidAppMemEnd = 0xab00000000ull; static const uptr kHiAppMemBeg = 0xff80000000ull; static const uptr kHiAppMemEnd = 0xffffffffffull; static const uptr kShadowMsk = 0xf800000000ull; static const uptr kShadowXor = 0x0800000000ull; static const uptr kShadowAdd = 0x0000000000ull; static const uptr kVdsoBeg = 0xfffff00000ull; }; /* C/C++ on Darwin/iOS/ARM64 (36-bit VMA, 64 GB VM) 0000 0000 00 - 0100 0000 00: - (4 GB) 0100 0000 00 - 0200 0000 00: main binary, modules, thread stacks (4 GB) 0200 0000 00 - 0300 0000 00: heap (4 GB) 0300 0000 00 - 0400 0000 00: - (4 GB) 0400 0000 00 - 0800 0000 00: shadow memory (16 GB) 0800 0000 00 - 0d00 0000 00: - (20 GB) 0d00 0000 00 - 0e00 0000 00: metainfo (4 GB) 0e00 0000 00 - 1000 0000 00: - */ struct MappingAppleAarch64 { static const uptr kLoAppMemBeg = 0x0100000000ull; static const uptr kLoAppMemEnd = 0x0200000000ull; static const uptr kHeapMemBeg = 0x0200000000ull; static const uptr kHeapMemEnd = 0x0300000000ull; static const uptr kShadowBeg = 0x0400000000ull; static const uptr kShadowEnd = 0x0800000000ull; static const uptr kMetaShadowBeg = 0x0d00000000ull; static const uptr kMetaShadowEnd = 0x0e00000000ull; static const uptr kHiAppMemBeg = 0x0fc0000000ull; static const uptr kHiAppMemEnd = 0x0fc0000000ull; static const uptr kShadowMsk = 0x0ull; static const uptr kShadowXor = 0x0ull; static const uptr kShadowAdd = 0x0200000000ull; static const uptr kVdsoBeg = 0x7000000000000000ull; static const uptr kMidAppMemBeg = 0; static const uptr kMidAppMemEnd = 0; }; /* C/C++ on linux/aarch64 (39-bit VMA) 0000 0010 00 - 0500 0000 00: main binary (20 GB) 0100 0000 00 - 2000 0000 00: - 2000 0000 00 - 4000 0000 00: shadow memory (128 GB) 4000 0000 00 - 4800 0000 00: metainfo (32 GB) 4800 0000 00 - 5500 0000 00: - 5500 0000 00 - 5a00 0000 00: main binary (PIE) (20 GB) 5600 0000 00 - 7c00 0000 00: - 7a00 0000 00 - 7d00 0000 00: heap (12 GB) 7d00 0000 00 - 7fff ffff ff: modules and main thread stack (12 GB) */ struct MappingAarch64_39 { static const uptr kLoAppMemBeg = 0x0000001000ull; static const uptr kLoAppMemEnd = 0x0500000000ull; static const uptr kShadowBeg = 0x2000000000ull; static const uptr kShadowEnd = 0x4000000000ull; static const uptr kMetaShadowBeg = 0x4000000000ull; static const uptr kMetaShadowEnd = 0x4800000000ull; static const uptr kMidAppMemBeg = 0x5500000000ull; static const uptr kMidAppMemEnd = 0x5a00000000ull; static const uptr kHeapMemBeg = 0x7a00000000ull; static const uptr kHeapMemEnd = 0x7d00000000ull; static const uptr kHiAppMemBeg = 0x7d00000000ull; static const uptr kHiAppMemEnd = 0x7fffffffffull; static const uptr kShadowMsk = 0x7000000000ull; static const uptr kShadowXor = 0x1000000000ull; static const uptr kShadowAdd = 0x0000000000ull; static const uptr kVdsoBeg = 0x7f00000000ull; }; /* C/C++ on linux/aarch64 (42-bit VMA) 00000 0010 00 - 02000 0000 00: main binary (128 GB) 02000 0000 00 - 08000 0000 00: - 10000 0000 00 - 20000 0000 00: shadow memory (1024 GB) 20000 0000 00 - 24000 0000 00: metainfo (256 GB) 24000 0000 00 - 2aa00 0000 00: - 2aa00 0000 00 - 2c000 0000 00: main binary (PIE) (88 GB) 2c000 0000 00 - 3c000 0000 00: - 3c000 0000 00 - 3f000 0000 00: heap (192 GB) 3f000 0000 00 - 3ffff ffff ff: modules and main thread stack (64 GB) */ struct MappingAarch64_42 { static const uptr kLoAppMemBeg = 0x00000001000ull; static const uptr kLoAppMemEnd = 0x02000000000ull; static const uptr kShadowBeg = 0x10000000000ull; static const uptr kShadowEnd = 0x20000000000ull; static const uptr kMetaShadowBeg = 0x20000000000ull; static const uptr kMetaShadowEnd = 0x24000000000ull; static const uptr kMidAppMemBeg = 0x2aa00000000ull; static const uptr kMidAppMemEnd = 0x2c000000000ull; static const uptr kHeapMemBeg = 0x3c000000000ull; static const uptr kHeapMemEnd = 0x3f000000000ull; static const uptr kHiAppMemBeg = 0x3f000000000ull; static const uptr kHiAppMemEnd = 0x3ffffffffffull; static const uptr kShadowMsk = 0x38000000000ull; static const uptr kShadowXor = 0x08000000000ull; static const uptr kShadowAdd = 0x00000000000ull; static const uptr kVdsoBeg = 0x37f00000000ull; }; /* C/C++ on linux/aarch64 (48-bit VMA) 0000 0000 1000 - 0a00 0000 0000: main binary (10240 GB) 0a00 0000 1000 - 1554 0000 0000: - 1554 0000 1000 - 5400 0000 0000: shadow memory (64176 GB) 5400 0000 1000 - 8000 0000 0000: - 8000 0000 1000 - 0a00 0000 0000: metainfo (32768 GB) a000 0000 1000 - aaaa 0000 0000: - aaaa 0000 1000 - ac00 0000 0000: main binary (PIE) (1368 GB) ac00 0000 1000 - fc00 0000 0000: - fc00 0000 1000 - ffff ffff ffff: modules and main thread stack (4096 GB) N.B. the shadow memory region has a strange start address, because it contains the shadows for the mid, high and low app regions (in this unusual order). */ struct MappingAarch64_48 { static const uptr kLoAppMemBeg = 0x0000000001000ull; static const uptr kLoAppMemEnd = 0x00a0000000000ull; static const uptr kShadowBeg = 0x0155400000000ull; static const uptr kShadowEnd = 0x0540000000000ull; static const uptr kMetaShadowBeg = 0x0800000000000ull; static const uptr kMetaShadowEnd = 0x0a00000000000ull; static const uptr kMidAppMemBeg = 0x0aaaa00000000ull; static const uptr kMidAppMemEnd = 0x0ac0000000000ull; static const uptr kHiAppMemBeg = 0x0fc0000000000ull; static const uptr kHiAppMemEnd = 0x1000000000000ull; static const uptr kHeapMemBeg = 0x0fc0000000000ull; static const uptr kHeapMemEnd = 0x0fc0000000000ull; static const uptr kShadowMsk = 0x0c00000000000ull; static const uptr kShadowXor = 0x0200000000000ull; static const uptr kShadowAdd = 0x0000000000000ull; static const uptr kVdsoBeg = 0xffff000000000ull; }; /* C/C++ on linux/loongarch64 (47-bit VMA) 0000 0000 4000 - 0080 0000 0000: main binary 0080 0000 0000 - 0100 0000 0000: - 0100 0000 0000 - 1000 0000 0000: shadow memory 1000 0000 0000 - 3000 0000 0000: - 3000 0000 0000 - 3400 0000 0000: metainfo 3400 0000 0000 - 5555 0000 0000: - 5555 0000 0000 - 5556 0000 0000: main binary (PIE) 5556 0000 0000 - 7ffe 0000 0000: - 7ffe 0000 0000 - 7fff 0000 0000: heap 7fff 0000 0000 - 7fff 8000 0000: - 7fff 8000 0000 - 8000 0000 0000: modules and main thread stack */ struct MappingLoongArch64_47 { static const uptr kMetaShadowBeg = 0x300000000000ull; static const uptr kMetaShadowEnd = 0x340000000000ull; static const uptr kShadowBeg = 0x010000000000ull; static const uptr kShadowEnd = 0x100000000000ull; static const uptr kHeapMemBeg = 0x7ffe00000000ull; static const uptr kHeapMemEnd = 0x7fff00000000ull; static const uptr kLoAppMemBeg = 0x000000004000ull; static const uptr kLoAppMemEnd = 0x008000000000ull; static const uptr kMidAppMemBeg = 0x555500000000ull; static const uptr kMidAppMemEnd = 0x555600000000ull; static const uptr kHiAppMemBeg = 0x7fff80000000ull; static const uptr kHiAppMemEnd = 0x800000000000ull; static const uptr kShadowMsk = 0x780000000000ull; static const uptr kShadowXor = 0x040000000000ull; static const uptr kShadowAdd = 0x000000000000ull; static const uptr kVdsoBeg = 0x7fffffffc000ull; }; /* C/C++ on linux/powerpc64 (44-bit VMA) 0000 0000 0100 - 0001 0000 0000: main binary 0001 0000 0000 - 0001 0000 0000: - 0001 0000 0000 - 0b00 0000 0000: shadow 0b00 0000 0000 - 0b00 0000 0000: - 0b00 0000 0000 - 0d00 0000 0000: metainfo (memory blocks and sync objects) 0d00 0000 0000 - 0f00 0000 0000: - 0f00 0000 0000 - 0f50 0000 0000: heap 0f50 0000 0000 - 0f60 0000 0000: - 0f60 0000 0000 - 1000 0000 0000: modules and main thread stack */ struct MappingPPC64_44 { static const uptr kBroken = kBrokenMapping | kBrokenReverseMapping | kBrokenLinearity | kBrokenAliasedMetas; static const uptr kMetaShadowBeg = 0x0b0000000000ull; static const uptr kMetaShadowEnd = 0x0d0000000000ull; static const uptr kShadowBeg = 0x000100000000ull; static const uptr kShadowEnd = 0x0b0000000000ull; static const uptr kLoAppMemBeg = 0x000000000100ull; static const uptr kLoAppMemEnd = 0x000100000000ull; static const uptr kHeapMemBeg = 0x0f0000000000ull; static const uptr kHeapMemEnd = 0x0f5000000000ull; static const uptr kHiAppMemBeg = 0x0f6000000000ull; static const uptr kHiAppMemEnd = 0x100000000000ull; // 44 bits static const uptr kShadowMsk = 0x0f0000000000ull; static const uptr kShadowXor = 0x002100000000ull; static const uptr kShadowAdd = 0x000000000000ull; static const uptr kVdsoBeg = 0x3c0000000000000ull; static const uptr kMidAppMemBeg = 0; static const uptr kMidAppMemEnd = 0; }; /* C/C++ on linux/powerpc64 (46-bit VMA) 0000 0000 1000 - 0100 0000 0000: main binary 0100 0000 0000 - 0200 0000 0000: - 0100 0000 0000 - 0800 0000 0000: shadow 0800 0000 0000 - 1000 0000 0000: - 1000 0000 0000 - 1200 0000 0000: metainfo (memory blocks and sync objects) 1200 0000 0000 - 3d00 0000 0000: - 3d00 0000 0000 - 3e00 0000 0000: heap 3e00 0000 0000 - 3e80 0000 0000: - 3e80 0000 0000 - 4000 0000 0000: modules and main thread stack */ struct MappingPPC64_46 { static const uptr kMetaShadowBeg = 0x100000000000ull; static const uptr kMetaShadowEnd = 0x120000000000ull; static const uptr kShadowBeg = 0x010000000000ull; static const uptr kShadowEnd = 0x080000000000ull; static const uptr kHeapMemBeg = 0x3d0000000000ull; static const uptr kHeapMemEnd = 0x3e0000000000ull; static const uptr kLoAppMemBeg = 0x000000001000ull; static const uptr kLoAppMemEnd = 0x010000000000ull; static const uptr kHiAppMemBeg = 0x3e8000000000ull; static const uptr kHiAppMemEnd = 0x400000000000ull; // 46 bits static const uptr kShadowMsk = 0x3c0000000000ull; static const uptr kShadowXor = 0x020000000000ull; static const uptr kShadowAdd = 0x000000000000ull; static const uptr kVdsoBeg = 0x7800000000000000ull; static const uptr kMidAppMemBeg = 0; static const uptr kMidAppMemEnd = 0; }; /* C/C++ on linux/powerpc64 (47-bit VMA) 0000 0000 1000 - 0100 0000 0000: main binary 0100 0000 0000 - 0200 0000 0000: - 0100 0000 0000 - 0800 0000 0000: shadow 0800 0000 0000 - 1000 0000 0000: - 1000 0000 0000 - 1200 0000 0000: metainfo (memory blocks and sync objects) 1200 0000 0000 - 7d00 0000 0000: - 7d00 0000 0000 - 7e00 0000 0000: heap 7e00 0000 0000 - 7e80 0000 0000: - 7e80 0000 0000 - 8000 0000 0000: modules and main thread stack */ struct MappingPPC64_47 { static const uptr kMetaShadowBeg = 0x100000000000ull; static const uptr kMetaShadowEnd = 0x120000000000ull; static const uptr kShadowBeg = 0x010000000000ull; static const uptr kShadowEnd = 0x080000000000ull; static const uptr kHeapMemBeg = 0x7d0000000000ull; static const uptr kHeapMemEnd = 0x7e0000000000ull; static const uptr kLoAppMemBeg = 0x000000001000ull; static const uptr kLoAppMemEnd = 0x010000000000ull; static const uptr kHiAppMemBeg = 0x7e8000000000ull; static const uptr kHiAppMemEnd = 0x800000000000ull; // 47 bits static const uptr kShadowMsk = 0x7c0000000000ull; static const uptr kShadowXor = 0x020000000000ull; static const uptr kShadowAdd = 0x000000000000ull; static const uptr kVdsoBeg = 0x7800000000000000ull; static const uptr kMidAppMemBeg = 0; static const uptr kMidAppMemEnd = 0; }; /* C/C++ on linux/s390x While the kernel provides a 64-bit address space, we have to restrict ourselves to 48 bits due to how e.g. SyncVar::GetId() works. 0000 0000 1000 - 0e00 0000 0000: binary, modules, stacks - 14 TiB 0e00 0000 0000 - 2000 0000 0000: - 2000 0000 0000 - 4000 0000 0000: shadow - 32TiB (2 * app) 4000 0000 0000 - 9000 0000 0000: - 9000 0000 0000 - 9800 0000 0000: metainfo - 8TiB (0.5 * app) 9800 0000 0000 - be00 0000 0000: - be00 0000 0000 - c000 0000 0000: heap - 2TiB (max supported by the allocator) */ struct MappingS390x { static const uptr kMetaShadowBeg = 0x900000000000ull; static const uptr kMetaShadowEnd = 0x980000000000ull; static const uptr kShadowBeg = 0x200000000000ull; static const uptr kShadowEnd = 0x400000000000ull; static const uptr kHeapMemBeg = 0xbe0000000000ull; static const uptr kHeapMemEnd = 0xc00000000000ull; static const uptr kLoAppMemBeg = 0x000000001000ull; static const uptr kLoAppMemEnd = 0x0e0000000000ull; static const uptr kHiAppMemBeg = 0xc00000004000ull; static const uptr kHiAppMemEnd = 0xc00000004000ull; static const uptr kShadowMsk = 0xb00000000000ull; static const uptr kShadowXor = 0x100000000000ull; static const uptr kShadowAdd = 0x000000000000ull; static const uptr kVdsoBeg = 0xfffffffff000ull; static const uptr kMidAppMemBeg = 0; static const uptr kMidAppMemEnd = 0; }; /* Go on linux, darwin and freebsd on x86_64 0000 0000 1000 - 0000 1000 0000: executable 0000 1000 0000 - 00c0 0000 0000: - 00c0 0000 0000 - 00e0 0000 0000: heap 00e0 0000 0000 - 2000 0000 0000: - 2000 0000 0000 - 21c0 0000 0000: shadow 21c0 0000 0000 - 3000 0000 0000: - 3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects) 4000 0000 0000 - 8000 0000 0000: - */ struct MappingGo48 { static const uptr kMetaShadowBeg = 0x300000000000ull; static const uptr kMetaShadowEnd = 0x400000000000ull; static const uptr kShadowBeg = 0x200000000000ull; static const uptr kShadowEnd = 0x21c000000000ull; static const uptr kLoAppMemBeg = 0x000000001000ull; static const uptr kLoAppMemEnd = 0x00e000000000ull; static const uptr kMidAppMemBeg = 0; static const uptr kMidAppMemEnd = 0; static const uptr kHiAppMemBeg = 0; static const uptr kHiAppMemEnd = 0; static const uptr kHeapMemBeg = 0; static const uptr kHeapMemEnd = 0; static const uptr kVdsoBeg = 0; static const uptr kShadowMsk = 0; static const uptr kShadowXor = 0; static const uptr kShadowAdd = 0x200000000000ull; }; /* Go on windows 0000 0000 1000 - 0000 1000 0000: executable 0000 1000 0000 - 00f8 0000 0000: - 00c0 0000 0000 - 00e0 0000 0000: heap 00e0 0000 0000 - 0100 0000 0000: - 0100 0000 0000 - 0300 0000 0000: shadow 0300 0000 0000 - 0700 0000 0000: - 0700 0000 0000 - 0770 0000 0000: metainfo (memory blocks and sync objects) 07d0 0000 0000 - 8000 0000 0000: - PIE binaries currently not supported, but it should be theoretically possible. */ struct MappingGoWindows { static const uptr kMetaShadowBeg = 0x070000000000ull; static const uptr kMetaShadowEnd = 0x077000000000ull; static const uptr kShadowBeg = 0x010000000000ull; static const uptr kShadowEnd = 0x030000000000ull; static const uptr kLoAppMemBeg = 0x000000001000ull; static const uptr kLoAppMemEnd = 0x00e000000000ull; static const uptr kMidAppMemBeg = 0; static const uptr kMidAppMemEnd = 0; static const uptr kHiAppMemBeg = 0; static const uptr kHiAppMemEnd = 0; static const uptr kHeapMemBeg = 0; static const uptr kHeapMemEnd = 0; static const uptr kVdsoBeg = 0; static const uptr kShadowMsk = 0; static const uptr kShadowXor = 0; static const uptr kShadowAdd = 0x010000000000ull; }; /* Go on linux/powerpc64 (46-bit VMA) 0000 0000 1000 - 0000 1000 0000: executable 0000 1000 0000 - 00c0 0000 0000: - 00c0 0000 0000 - 00e0 0000 0000: heap 00e0 0000 0000 - 2000 0000 0000: - 2000 0000 0000 - 21c0 0000 0000: shadow 21c0 0000 0000 - 2400 0000 0000: - 2400 0000 0000 - 2470 0000 0000: metainfo (memory blocks and sync objects) 2470 0000 0000 - 4000 0000 0000: - */ struct MappingGoPPC64_46 { static const uptr kMetaShadowBeg = 0x240000000000ull; static const uptr kMetaShadowEnd = 0x247000000000ull; static const uptr kShadowBeg = 0x200000000000ull; static const uptr kShadowEnd = 0x21c000000000ull; static const uptr kLoAppMemBeg = 0x000000001000ull; static const uptr kLoAppMemEnd = 0x00e000000000ull; static const uptr kMidAppMemBeg = 0; static const uptr kMidAppMemEnd = 0; static const uptr kHiAppMemBeg = 0; static const uptr kHiAppMemEnd = 0; static const uptr kHeapMemBeg = 0; static const uptr kHeapMemEnd = 0; static const uptr kVdsoBeg = 0; static const uptr kShadowMsk = 0; static const uptr kShadowXor = 0; static const uptr kShadowAdd = 0x200000000000ull; }; /* Go on linux/powerpc64 (47-bit VMA) 0000 0000 1000 - 0000 1000 0000: executable 0000 1000 0000 - 00c0 0000 0000: - 00c0 0000 0000 - 00e0 0000 0000: heap 00e0 0000 0000 - 2000 0000 0000: - 2000 0000 0000 - 2800 0000 0000: shadow 2800 0000 0000 - 3000 0000 0000: - 3000 0000 0000 - 3200 0000 0000: metainfo (memory blocks and sync objects) 3200 0000 0000 - 8000 0000 0000: - */ struct MappingGoPPC64_47 { static const uptr kMetaShadowBeg = 0x300000000000ull; static const uptr kMetaShadowEnd = 0x320000000000ull; static const uptr kShadowBeg = 0x200000000000ull; static const uptr kShadowEnd = 0x280000000000ull; static const uptr kLoAppMemBeg = 0x000000001000ull; static const uptr kLoAppMemEnd = 0x00e000000000ull; static const uptr kMidAppMemBeg = 0; static const uptr kMidAppMemEnd = 0; static const uptr kHiAppMemBeg = 0; static const uptr kHiAppMemEnd = 0; static const uptr kHeapMemBeg = 0; static const uptr kHeapMemEnd = 0; static const uptr kVdsoBeg = 0; static const uptr kShadowMsk = 0; static const uptr kShadowXor = 0; static const uptr kShadowAdd = 0x200000000000ull; }; /* Go on linux/aarch64 (48-bit VMA) and darwin/aarch64 (47-bit VMA) 0000 0000 1000 - 0000 1000 0000: executable 0000 1000 0000 - 00c0 0000 0000: - 00c0 0000 0000 - 00e0 0000 0000: heap 00e0 0000 0000 - 2000 0000 0000: - 2000 0000 0000 - 2800 0000 0000: shadow 2800 0000 0000 - 3000 0000 0000: - 3000 0000 0000 - 3200 0000 0000: metainfo (memory blocks and sync objects) 3200 0000 0000 - 8000 0000 0000: - */ struct MappingGoAarch64 { static const uptr kMetaShadowBeg = 0x300000000000ull; static const uptr kMetaShadowEnd = 0x320000000000ull; static const uptr kShadowBeg = 0x200000000000ull; static const uptr kShadowEnd = 0x280000000000ull; static const uptr kLoAppMemBeg = 0x000000001000ull; static const uptr kLoAppMemEnd = 0x00e000000000ull; static const uptr kMidAppMemBeg = 0; static const uptr kMidAppMemEnd = 0; static const uptr kHiAppMemBeg = 0; static const uptr kHiAppMemEnd = 0; static const uptr kHeapMemBeg = 0; static const uptr kHeapMemEnd = 0; static const uptr kVdsoBeg = 0; static const uptr kShadowMsk = 0; static const uptr kShadowXor = 0; static const uptr kShadowAdd = 0x200000000000ull; }; /* Go on linux/mips64 (47-bit VMA) 0000 0000 1000 - 0000 1000 0000: executable 0000 1000 0000 - 00c0 0000 0000: - 00c0 0000 0000 - 00e0 0000 0000: heap 00e0 0000 0000 - 2000 0000 0000: - 2000 0000 0000 - 2800 0000 0000: shadow 2800 0000 0000 - 3000 0000 0000: - 3000 0000 0000 - 3200 0000 0000: metainfo (memory blocks and sync objects) 3200 0000 0000 - 8000 0000 0000: - */ struct MappingGoMips64_47 { static const uptr kMetaShadowBeg = 0x300000000000ull; static const uptr kMetaShadowEnd = 0x320000000000ull; static const uptr kShadowBeg = 0x200000000000ull; static const uptr kShadowEnd = 0x280000000000ull; static const uptr kLoAppMemBeg = 0x000000001000ull; static const uptr kLoAppMemEnd = 0x00e000000000ull; static const uptr kMidAppMemBeg = 0; static const uptr kMidAppMemEnd = 0; static const uptr kHiAppMemBeg = 0; static const uptr kHiAppMemEnd = 0; static const uptr kHeapMemBeg = 0; static const uptr kHeapMemEnd = 0; static const uptr kVdsoBeg = 0; static const uptr kShadowMsk = 0; static const uptr kShadowXor = 0; static const uptr kShadowAdd = 0x200000000000ull; }; /* Go on linux/s390x 0000 0000 1000 - 1000 0000 0000: executable and heap - 16 TiB 1000 0000 0000 - 4000 0000 0000: - 4000 0000 0000 - 6000 0000 0000: shadow - 64TiB (4 * app) 6000 0000 0000 - 9000 0000 0000: - 9000 0000 0000 - 9800 0000 0000: metainfo - 8TiB (0.5 * app) */ struct MappingGoS390x { static const uptr kMetaShadowBeg = 0x900000000000ull; static const uptr kMetaShadowEnd = 0x980000000000ull; static const uptr kShadowBeg = 0x400000000000ull; static const uptr kShadowEnd = 0x600000000000ull; static const uptr kLoAppMemBeg = 0x000000001000ull; static const uptr kLoAppMemEnd = 0x100000000000ull; static const uptr kMidAppMemBeg = 0; static const uptr kMidAppMemEnd = 0; static const uptr kHiAppMemBeg = 0; static const uptr kHiAppMemEnd = 0; static const uptr kHeapMemBeg = 0; static const uptr kHeapMemEnd = 0; static const uptr kVdsoBeg = 0; static const uptr kShadowMsk = 0; static const uptr kShadowXor = 0; static const uptr kShadowAdd = 0x400000000000ull; }; extern uptr vmaSize; template ALWAYS_INLINE auto SelectMapping(Arg arg) { #if SANITIZER_GO # if defined(__powerpc64__) switch (vmaSize) { case 46: return Func::template Apply(arg); case 47: return Func::template Apply(arg); } # elif defined(__mips64) return Func::template Apply(arg); # elif defined(__s390x__) return Func::template Apply(arg); # elif defined(__aarch64__) return Func::template Apply(arg); # elif SANITIZER_WINDOWS return Func::template Apply(arg); # else return Func::template Apply(arg); # endif #else // SANITIZER_GO # if SANITIZER_IOS && !SANITIZER_IOSSIM return Func::template Apply(arg); # elif defined(__x86_64__) || SANITIZER_APPLE return Func::template Apply(arg); # elif defined(__aarch64__) switch (vmaSize) { case 39: return Func::template Apply(arg); case 42: return Func::template Apply(arg); case 48: return Func::template Apply(arg); } # elif SANITIZER_LOONGARCH64 return Func::template Apply(arg); # elif defined(__powerpc64__) switch (vmaSize) { case 44: return Func::template Apply(arg); case 46: return Func::template Apply(arg); case 47: return Func::template Apply(arg); } # elif defined(__mips64) return Func::template Apply(arg); # elif defined(__s390x__) return Func::template Apply(arg); # else # error "unsupported platform" # endif #endif Die(); } template void ForEachMapping() { Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); Func::template Apply(); } enum MappingType { kLoAppMemBeg, kLoAppMemEnd, kHiAppMemBeg, kHiAppMemEnd, kMidAppMemBeg, kMidAppMemEnd, kHeapMemBeg, kHeapMemEnd, kShadowBeg, kShadowEnd, kMetaShadowBeg, kMetaShadowEnd, kVdsoBeg, }; struct MappingField { template static uptr Apply(MappingType type) { switch (type) { case kLoAppMemBeg: return Mapping::kLoAppMemBeg; case kLoAppMemEnd: return Mapping::kLoAppMemEnd; case kMidAppMemBeg: return Mapping::kMidAppMemBeg; case kMidAppMemEnd: return Mapping::kMidAppMemEnd; case kHiAppMemBeg: return Mapping::kHiAppMemBeg; case kHiAppMemEnd: return Mapping::kHiAppMemEnd; case kHeapMemBeg: return Mapping::kHeapMemBeg; case kHeapMemEnd: return Mapping::kHeapMemEnd; case kVdsoBeg: return Mapping::kVdsoBeg; case kShadowBeg: return Mapping::kShadowBeg; case kShadowEnd: return Mapping::kShadowEnd; case kMetaShadowBeg: return Mapping::kMetaShadowBeg; case kMetaShadowEnd: return Mapping::kMetaShadowEnd; } Die(); } }; ALWAYS_INLINE uptr LoAppMemBeg(void) { return SelectMapping(kLoAppMemBeg); } ALWAYS_INLINE uptr LoAppMemEnd(void) { return SelectMapping(kLoAppMemEnd); } ALWAYS_INLINE uptr MidAppMemBeg(void) { return SelectMapping(kMidAppMemBeg); } ALWAYS_INLINE uptr MidAppMemEnd(void) { return SelectMapping(kMidAppMemEnd); } ALWAYS_INLINE uptr HeapMemBeg(void) { return SelectMapping(kHeapMemBeg); } ALWAYS_INLINE uptr HeapMemEnd(void) { return SelectMapping(kHeapMemEnd); } ALWAYS_INLINE uptr HiAppMemBeg(void) { return SelectMapping(kHiAppMemBeg); } ALWAYS_INLINE uptr HiAppMemEnd(void) { return SelectMapping(kHiAppMemEnd); } ALWAYS_INLINE uptr VdsoBeg(void) { return SelectMapping(kVdsoBeg); } ALWAYS_INLINE uptr ShadowBeg(void) { return SelectMapping(kShadowBeg); } ALWAYS_INLINE uptr ShadowEnd(void) { return SelectMapping(kShadowEnd); } ALWAYS_INLINE uptr MetaShadowBeg(void) { return SelectMapping(kMetaShadowBeg); } ALWAYS_INLINE uptr MetaShadowEnd(void) { return SelectMapping(kMetaShadowEnd); } struct IsAppMemImpl { template static bool Apply(uptr mem) { return (mem >= Mapping::kHeapMemBeg && mem < Mapping::kHeapMemEnd) || (mem >= Mapping::kMidAppMemBeg && mem < Mapping::kMidAppMemEnd) || (mem >= Mapping::kLoAppMemBeg && mem < Mapping::kLoAppMemEnd) || (mem >= Mapping::kHiAppMemBeg && mem < Mapping::kHiAppMemEnd); } }; ALWAYS_INLINE bool IsAppMem(uptr mem) { return SelectMapping(mem); } struct IsShadowMemImpl { template static bool Apply(uptr mem) { return mem >= Mapping::kShadowBeg && mem <= Mapping::kShadowEnd; } }; ALWAYS_INLINE bool IsShadowMem(RawShadow *p) { return SelectMapping(reinterpret_cast(p)); } struct IsMetaMemImpl { template static bool Apply(uptr mem) { return mem >= Mapping::kMetaShadowBeg && mem <= Mapping::kMetaShadowEnd; } }; ALWAYS_INLINE bool IsMetaMem(const u32 *p) { return SelectMapping(reinterpret_cast(p)); } struct MemToShadowImpl { template static uptr Apply(uptr x) { DCHECK(IsAppMemImpl::Apply(x)); return (((x) & ~(Mapping::kShadowMsk | (kShadowCell - 1))) ^ Mapping::kShadowXor) * kShadowMultiplier + Mapping::kShadowAdd; } }; ALWAYS_INLINE RawShadow *MemToShadow(uptr x) { return reinterpret_cast(SelectMapping(x)); } struct MemToMetaImpl { template static u32 *Apply(uptr x) { DCHECK(IsAppMemImpl::Apply(x)); return (u32 *)(((((x) & ~(Mapping::kShadowMsk | (kMetaShadowCell - 1)))) / kMetaShadowCell * kMetaShadowSize) | Mapping::kMetaShadowBeg); } }; ALWAYS_INLINE u32 *MemToMeta(uptr x) { return SelectMapping(x); } struct ShadowToMemImpl { template static uptr Apply(uptr sp) { if (!IsShadowMemImpl::Apply(sp)) return 0; // The shadow mapping is non-linear and we've lost some bits, so we don't // have an easy way to restore the original app address. But the mapping is // a bijection, so we try to restore the address as belonging to // low/mid/high range consecutively and see if shadow->app->shadow mapping // gives us the same address. uptr p = ((sp - Mapping::kShadowAdd) / kShadowMultiplier) ^ Mapping::kShadowXor; if (p >= Mapping::kLoAppMemBeg && p < Mapping::kLoAppMemEnd && MemToShadowImpl::Apply(p) == sp) return p; if (Mapping::kMidAppMemBeg) { uptr p_mid = p + (Mapping::kMidAppMemBeg & Mapping::kShadowMsk); if (p_mid >= Mapping::kMidAppMemBeg && p_mid < Mapping::kMidAppMemEnd && MemToShadowImpl::Apply(p_mid) == sp) return p_mid; } return p | Mapping::kShadowMsk; } }; ALWAYS_INLINE uptr ShadowToMem(RawShadow *s) { return SelectMapping(reinterpret_cast(s)); } // Compresses addr to kCompressedAddrBits stored in least significant bits. ALWAYS_INLINE uptr CompressAddr(uptr addr) { return addr & ((1ull << kCompressedAddrBits) - 1); } struct RestoreAddrImpl { typedef uptr Result; template static Result Apply(uptr addr) { // To restore the address we go over all app memory ranges and check if top // 3 bits of the compressed addr match that of the app range. If yes, we // assume that the compressed address come from that range and restore the // missing top bits to match the app range address. const uptr ranges[] = { Mapping::kLoAppMemBeg, Mapping::kLoAppMemEnd, Mapping::kMidAppMemBeg, Mapping::kMidAppMemEnd, Mapping::kHiAppMemBeg, Mapping::kHiAppMemEnd, Mapping::kHeapMemBeg, Mapping::kHeapMemEnd, }; const uptr indicator = 0x0e0000000000ull; const uptr ind_lsb = 1ull << LeastSignificantSetBitIndex(indicator); for (uptr i = 0; i < ARRAY_SIZE(ranges); i += 2) { uptr beg = ranges[i]; uptr end = ranges[i + 1]; if (beg == end) continue; for (uptr p = beg; p < end; p = RoundDown(p + ind_lsb, ind_lsb)) { if ((addr & indicator) == (p & indicator)) return addr | (p & ~(ind_lsb - 1)); } } Printf("ThreadSanitizer: failed to restore address 0x%zx\n", addr); Die(); } }; // Restores compressed addr from kCompressedAddrBits to full representation. // This is called only during reporting and is not performance-critical. inline uptr RestoreAddr(uptr addr) { return SelectMapping(addr); } void InitializePlatform(); void InitializePlatformEarly(); void CheckAndProtect(); void InitializeShadowMemoryPlatform(); void WriteMemoryProfile(char *buf, uptr buf_size, u64 uptime_ns); int ExtractResolvFDs(void *state, int *fds, int nfd); int ExtractRecvmsgFDs(void *msg, int *fds, int nfd); uptr ExtractLongJmpSp(uptr *env); void ImitateTlsWrite(ThreadState *thr, uptr tls_addr, uptr tls_size); int call_pthread_cancel_with_cleanup(int (*fn)(void *arg), void (*cleanup)(void *arg), void *arg); void DestroyThreadState(); void PlatformCleanUpThreadState(ThreadState *thr); } // namespace __tsan #endif // TSAN_PLATFORM_H