1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 | //===-- dfsan_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 DataFlowSanitizer. // // Platform specific information for DFSan. //===----------------------------------------------------------------------===// #ifndef DFSAN_PLATFORM_H #define DFSAN_PLATFORM_H namespace __dfsan { #if defined(__x86_64__) struct Mapping { static const uptr kShadowAddr = 0x10000; static const uptr kUnionTableAddr = 0x200000000000; static const uptr kAppAddr = 0x700000008000; static const uptr kShadowMask = ~0x700000000000; }; #elif defined(__mips64) struct Mapping { static const uptr kShadowAddr = 0x10000; static const uptr kUnionTableAddr = 0x2000000000; static const uptr kAppAddr = 0xF000008000; static const uptr kShadowMask = ~0xF000000000; }; #elif defined(__aarch64__) struct Mapping39 { static const uptr kShadowAddr = 0x10000; static const uptr kUnionTableAddr = 0x1000000000; static const uptr kAppAddr = 0x7000008000; static const uptr kShadowMask = ~0x7800000000; }; struct Mapping42 { static const uptr kShadowAddr = 0x10000; static const uptr kUnionTableAddr = 0x8000000000; static const uptr kAppAddr = 0x3ff00008000; static const uptr kShadowMask = ~0x3c000000000; }; struct Mapping48 { static const uptr kShadowAddr = 0x10000; static const uptr kUnionTableAddr = 0x8000000000; static const uptr kAppAddr = 0xffff00008000; static const uptr kShadowMask = ~0xfffff0000000; }; extern int vmaSize; # define DFSAN_RUNTIME_VMA 1 #else # error "DFSan not supported for this platform!" #endif enum MappingType { MAPPING_SHADOW_ADDR, MAPPING_UNION_TABLE_ADDR, MAPPING_APP_ADDR, MAPPING_SHADOW_MASK }; template<typename Mapping, int Type> uptr MappingImpl(void) { switch (Type) { case MAPPING_SHADOW_ADDR: return Mapping::kShadowAddr; case MAPPING_UNION_TABLE_ADDR: return Mapping::kUnionTableAddr; case MAPPING_APP_ADDR: return Mapping::kAppAddr; case MAPPING_SHADOW_MASK: return Mapping::kShadowMask; } } template<int Type> uptr MappingArchImpl(void) { #ifdef __aarch64__ switch (vmaSize) { case 39: return MappingImpl<Mapping39, Type>(); case 42: return MappingImpl<Mapping42, Type>(); case 48: return MappingImpl<Mapping48, Type>(); } DCHECK(0); return 0; #else return MappingImpl<Mapping, Type>(); #endif } ALWAYS_INLINE uptr ShadowAddr() { return MappingArchImpl<MAPPING_SHADOW_ADDR>(); } ALWAYS_INLINE uptr UnionTableAddr() { return MappingArchImpl<MAPPING_UNION_TABLE_ADDR>(); } ALWAYS_INLINE uptr AppAddr() { return MappingArchImpl<MAPPING_APP_ADDR>(); } ALWAYS_INLINE uptr ShadowMask() { return MappingArchImpl<MAPPING_SHADOW_MASK>(); } } // namespace __dfsan #endif |