| 1 | //===-- sanitizer_platform.h ------------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // Common platform macros. |
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| 10 | //===----------------------------------------------------------------------===// |
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| 11 | |
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| 12 | #ifndef SANITIZER_PLATFORM_H |
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| 13 | #define SANITIZER_PLATFORM_H |
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| 14 | |
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| 15 | #if !defined(__linux__) && !defined(__FreeBSD__) && !defined(__NetBSD__) && \ |
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| 16 | !defined(__APPLE__) && !defined(_WIN32) && !defined(__Fuchsia__) && \ |
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| 17 | !(defined(__sun__) && defined(__svr4__)) |
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| 18 | # error "This operating system is not supported" |
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| 19 | #endif |
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| 20 | |
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| 21 | // Get __GLIBC__ on a glibc platform. Exclude Android: features.h includes C |
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| 22 | // function declarations into a .S file which doesn't compile. |
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| 23 | // https://crbug.com/1162741 |
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| 24 | #if __has_include(<features.h>) && !defined(__ANDROID__) |
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| 25 | # include <features.h> |
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| 26 | #endif |
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| 27 | |
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| 28 | #if defined(__linux__) |
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| 29 | # define SANITIZER_LINUX 1 |
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| 30 | #else |
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| 31 | # define SANITIZER_LINUX 0 |
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| 32 | #endif |
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| 33 | |
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| 34 | #if defined(__GLIBC__) |
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| 35 | # define SANITIZER_GLIBC 1 |
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| 36 | #else |
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| 37 | # define SANITIZER_GLIBC 0 |
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| 38 | #endif |
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| 39 | |
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| 40 | #if defined(__FreeBSD__) |
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| 41 | # define SANITIZER_FREEBSD 1 |
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| 42 | #else |
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| 43 | # define SANITIZER_FREEBSD 0 |
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| 44 | #endif |
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| 45 | |
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| 46 | #if defined(__NetBSD__) |
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| 47 | # define SANITIZER_NETBSD 1 |
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| 48 | #else |
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| 49 | # define SANITIZER_NETBSD 0 |
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| 50 | #endif |
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| 51 | |
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| 52 | #if defined(__sun__) && defined(__svr4__) |
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| 53 | # define SANITIZER_SOLARIS 1 |
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| 54 | #else |
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| 55 | # define SANITIZER_SOLARIS 0 |
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| 56 | #endif |
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| 57 | |
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| 58 | // - SANITIZER_APPLE: all Apple code |
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| 59 | // - TARGET_OS_OSX: macOS |
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| 60 | // - SANITIZER_IOS: devices (iOS and iOS-like) |
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| 61 | // - SANITIZER_WATCHOS |
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| 62 | // - SANITIZER_TVOS |
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| 63 | // - SANITIZER_IOSSIM: simulators (iOS and iOS-like) |
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| 64 | // - SANITIZER_DRIVERKIT |
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| 65 | #if defined(__APPLE__) |
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| 66 | # define SANITIZER_APPLE 1 |
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| 67 | # include <TargetConditionals.h> |
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| 68 | # if TARGET_OS_OSX |
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| 69 | # define SANITIZER_OSX 1 |
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| 70 | # else |
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| 71 | # define SANITIZER_OSX 0 |
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| 72 | # endif |
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| 73 | # if TARGET_OS_IPHONE |
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| 74 | # define SANITIZER_IOS 1 |
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| 75 | # else |
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| 76 | # define SANITIZER_IOS 0 |
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| 77 | # endif |
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| 78 | # if TARGET_OS_WATCH |
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| 79 | # define SANITIZER_WATCHOS 1 |
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| 80 | # else |
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| 81 | # define SANITIZER_WATCHOS 0 |
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| 82 | # endif |
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| 83 | # if TARGET_OS_TV |
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| 84 | # define SANITIZER_TVOS 1 |
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| 85 | # else |
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| 86 | # define SANITIZER_TVOS 0 |
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| 87 | # endif |
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| 88 | # if TARGET_OS_SIMULATOR |
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| 89 | # define SANITIZER_IOSSIM 1 |
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| 90 | # else |
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| 91 | # define SANITIZER_IOSSIM 0 |
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| 92 | # endif |
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| 93 | # if defined(TARGET_OS_DRIVERKIT) && TARGET_OS_DRIVERKIT |
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| 94 | # define SANITIZER_DRIVERKIT 1 |
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| 95 | # else |
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| 96 | # define SANITIZER_DRIVERKIT 0 |
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| 97 | # endif |
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| 98 | #else |
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| 99 | # define SANITIZER_APPLE 0 |
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| 100 | # define SANITIZER_OSX 0 |
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| 101 | # define SANITIZER_IOS 0 |
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| 102 | # define SANITIZER_WATCHOS 0 |
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| 103 | # define SANITIZER_TVOS 0 |
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| 104 | # define SANITIZER_IOSSIM 0 |
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| 105 | # define SANITIZER_DRIVERKIT 0 |
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| 106 | #endif |
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| 107 | |
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| 108 | #if defined(_WIN32) |
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| 109 | # define SANITIZER_WINDOWS 1 |
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| 110 | #else |
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| 111 | # define SANITIZER_WINDOWS 0 |
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| 112 | #endif |
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| 113 | |
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| 114 | #if defined(_WIN64) |
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| 115 | # define SANITIZER_WINDOWS64 1 |
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| 116 | #else |
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| 117 | # define SANITIZER_WINDOWS64 0 |
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| 118 | #endif |
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| 119 | |
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| 120 | #if defined(__ANDROID__) |
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| 121 | # define SANITIZER_ANDROID 1 |
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| 122 | #else |
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| 123 | # define SANITIZER_ANDROID 0 |
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| 124 | #endif |
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| 125 | |
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| 126 | #if defined(__Fuchsia__) |
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| 127 | # define SANITIZER_FUCHSIA 1 |
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| 128 | #else |
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| 129 | # define SANITIZER_FUCHSIA 0 |
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| 130 | #endif |
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| 131 | |
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| 132 | // Assume linux that is not glibc or android is musl libc. |
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| 133 | #if SANITIZER_LINUX && !SANITIZER_GLIBC && !SANITIZER_ANDROID |
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| 134 | # define SANITIZER_MUSL 1 |
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| 135 | #else |
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| 136 | # define SANITIZER_MUSL 0 |
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| 137 | #endif |
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| 138 | |
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| 139 | #define SANITIZER_POSIX \ |
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| 140 | (SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_APPLE || \ |
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| 141 | SANITIZER_NETBSD || SANITIZER_SOLARIS) |
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| 142 | |
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| 143 | #if __LP64__ || defined(_WIN64) |
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| 144 | # define SANITIZER_WORDSIZE 64 |
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| 145 | #else |
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| 146 | # define SANITIZER_WORDSIZE 32 |
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| 147 | #endif |
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| 148 | |
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| 149 | #if SANITIZER_WORDSIZE == 64 |
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| 150 | # define FIRST_32_SECOND_64(a, b) (b) |
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| 151 | #else |
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| 152 | # define FIRST_32_SECOND_64(a, b) (a) |
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| 153 | #endif |
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| 154 | |
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| 155 | #if defined(__x86_64__) && !defined(_LP64) |
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| 156 | # define SANITIZER_X32 1 |
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| 157 | #else |
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| 158 | # define SANITIZER_X32 0 |
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| 159 | #endif |
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| 160 | |
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| 161 | #if defined(__x86_64__) || defined(_M_X64) |
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| 162 | # define SANITIZER_X64 1 |
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| 163 | #else |
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| 164 | # define SANITIZER_X64 0 |
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| 165 | #endif |
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| 166 | |
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| 167 | #if defined(__i386__) || defined(_M_IX86) |
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| 168 | # define SANITIZER_I386 1 |
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| 169 | #else |
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| 170 | # define SANITIZER_I386 0 |
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| 171 | #endif |
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| 172 | |
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| 173 | #if defined(__mips__) |
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| 174 | # define SANITIZER_MIPS 1 |
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| 175 | # if defined(__mips64) && _MIPS_SIM == _ABI64 |
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| 176 | # define SANITIZER_MIPS32 0 |
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| 177 | # define SANITIZER_MIPS64 1 |
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| 178 | # else |
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| 179 | # define SANITIZER_MIPS32 1 |
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| 180 | # define SANITIZER_MIPS64 0 |
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| 181 | # endif |
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| 182 | #else |
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| 183 | # define SANITIZER_MIPS 0 |
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| 184 | # define SANITIZER_MIPS32 0 |
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| 185 | # define SANITIZER_MIPS64 0 |
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| 186 | #endif |
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| 187 | |
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| 188 | #if defined(__s390__) |
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| 189 | # define SANITIZER_S390 1 |
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| 190 | # if defined(__s390x__) |
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| 191 | # define SANITIZER_S390_31 0 |
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| 192 | # define SANITIZER_S390_64 1 |
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| 193 | # else |
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| 194 | # define SANITIZER_S390_31 1 |
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| 195 | # define SANITIZER_S390_64 0 |
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| 196 | # endif |
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| 197 | #else |
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| 198 | # define SANITIZER_S390 0 |
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| 199 | # define SANITIZER_S390_31 0 |
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| 200 | # define SANITIZER_S390_64 0 |
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| 201 | #endif |
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| 202 | |
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| 203 | #if defined(__sparc__) |
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| 204 | # define SANITIZER_SPARC 1 |
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| 205 | # if defined(__arch64__) |
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| 206 | # define SANITIZER_SPARC32 0 |
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| 207 | # define SANITIZER_SPARC64 1 |
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| 208 | # else |
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| 209 | # define SANITIZER_SPARC32 1 |
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| 210 | # define SANITIZER_SPARC64 0 |
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| 211 | # endif |
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| 212 | #else |
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| 213 | # define SANITIZER_SPARC 0 |
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| 214 | # define SANITIZER_SPARC32 0 |
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| 215 | # define SANITIZER_SPARC64 0 |
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| 216 | #endif |
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| 217 | |
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| 218 | #if defined(__powerpc__) |
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| 219 | # define SANITIZER_PPC 1 |
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| 220 | # if defined(__powerpc64__) |
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| 221 | # define SANITIZER_PPC32 0 |
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| 222 | # define SANITIZER_PPC64 1 |
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| 223 | // 64-bit PPC has two ABIs (v1 and v2). The old powerpc64 target is |
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| 224 | // big-endian, and uses v1 ABI (known for its function descriptors), |
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| 225 | // while the new powerpc64le target is little-endian and uses v2. |
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| 226 | // In theory, you could convince gcc to compile for their evil twins |
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| 227 | // (eg. big-endian v2), but you won't find such combinations in the wild |
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| 228 | // (it'd require bootstrapping a whole system, which would be quite painful |
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| 229 | // - there's no target triple for that). LLVM doesn't support them either. |
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| 230 | # if _CALL_ELF == 2 |
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| 231 | # define SANITIZER_PPC64V1 0 |
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| 232 | # define SANITIZER_PPC64V2 1 |
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| 233 | # else |
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| 234 | # define SANITIZER_PPC64V1 1 |
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| 235 | # define SANITIZER_PPC64V2 0 |
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| 236 | # endif |
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| 237 | # else |
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| 238 | # define SANITIZER_PPC32 1 |
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| 239 | # define SANITIZER_PPC64 0 |
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| 240 | # define SANITIZER_PPC64V1 0 |
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| 241 | # define SANITIZER_PPC64V2 0 |
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| 242 | # endif |
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| 243 | #else |
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| 244 | # define SANITIZER_PPC 0 |
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| 245 | # define SANITIZER_PPC32 0 |
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| 246 | # define SANITIZER_PPC64 0 |
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| 247 | # define SANITIZER_PPC64V1 0 |
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| 248 | # define SANITIZER_PPC64V2 0 |
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| 249 | #endif |
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| 250 | |
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| 251 | #if defined(__arm__) || defined(_M_ARM) |
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| 252 | # define SANITIZER_ARM 1 |
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| 253 | #else |
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| 254 | # define SANITIZER_ARM 0 |
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| 255 | #endif |
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| 256 | |
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| 257 | #if defined(__aarch64__) || defined(_M_ARM64) |
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| 258 | # define SANITIZER_ARM64 1 |
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| 259 | #else |
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| 260 | # define SANITIZER_ARM64 0 |
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| 261 | #endif |
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| 262 | |
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| 263 | #if SANITIZER_WINDOWS64 && SANITIZER_ARM64 |
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| 264 | # define SANITIZER_WINDOWS_ARM64 1 |
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| 265 | # define SANITIZER_WINDOWS_x64 0 |
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| 266 | #elif SANITIZER_WINDOWS64 && !SANITIZER_ARM64 |
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| 267 | # define SANITIZER_WINDOWS_ARM64 0 |
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| 268 | # define SANITIZER_WINDOWS_x64 1 |
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| 269 | #else |
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| 270 | # define SANITIZER_WINDOWS_ARM64 0 |
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| 271 | # define SANITIZER_WINDOWS_x64 0 |
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| 272 | #endif |
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| 273 | |
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| 274 | #if SANITIZER_SOLARIS && SANITIZER_WORDSIZE == 32 |
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| 275 | # define SANITIZER_SOLARIS32 1 |
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| 276 | #else |
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| 277 | # define SANITIZER_SOLARIS32 0 |
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| 278 | #endif |
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| 279 | |
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| 280 | #if defined(__riscv) && (__riscv_xlen == 64) |
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| 281 | # define SANITIZER_RISCV64 1 |
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| 282 | #else |
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| 283 | # define SANITIZER_RISCV64 0 |
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| 284 | #endif |
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| 285 | |
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| 286 | #if defined(__loongarch_lp64) |
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| 287 | # define SANITIZER_LOONGARCH64 1 |
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| 288 | #else |
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| 289 | # define SANITIZER_LOONGARCH64 0 |
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| 290 | #endif |
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| 291 | |
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| 292 | // By default we allow to use SizeClassAllocator64 on 64-bit platform. |
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| 293 | // But in some cases SizeClassAllocator64 does not work well and we need to |
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| 294 | // fallback to SizeClassAllocator32. |
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| 295 | // For such platforms build this code with -DSANITIZER_CAN_USE_ALLOCATOR64=0 or |
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| 296 | // change the definition of SANITIZER_CAN_USE_ALLOCATOR64 here. |
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| 297 | #ifndef SANITIZER_CAN_USE_ALLOCATOR64 |
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| 298 | # if (SANITIZER_RISCV64 && !SANITIZER_FUCHSIA) || SANITIZER_IOS || \ |
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| 299 | SANITIZER_DRIVERKIT |
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| 300 | # define SANITIZER_CAN_USE_ALLOCATOR64 0 |
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| 301 | # elif defined(__mips64) || defined(__hexagon__) |
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| 302 | # define SANITIZER_CAN_USE_ALLOCATOR64 0 |
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| 303 | # else |
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| 304 | # define SANITIZER_CAN_USE_ALLOCATOR64 (SANITIZER_WORDSIZE == 64) |
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| 305 | # endif |
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| 306 | #endif |
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| 307 | |
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| 308 | // The range of addresses which can be returned my mmap. |
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| 309 | // FIXME: this value should be different on different platforms. Larger values |
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| 310 | // will still work but will consume more memory for TwoLevelByteMap. |
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| 311 | #if defined(__mips__) |
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| 312 | # if SANITIZER_GO && defined(__mips64) |
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| 313 | # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47) |
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| 314 | # else |
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| 315 | # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 40) |
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| 316 | # endif |
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| 317 | #elif SANITIZER_RISCV64 |
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| 318 | // FIXME: Rather than hardcoding the VMA here, we should rely on |
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| 319 | // GetMaxUserVirtualAddress(). This will require some refactoring though since |
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| 320 | // many places either hardcode some value or SANITIZER_MMAP_RANGE_SIZE is |
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| 321 | // assumed to be some constant integer. |
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| 322 | # if SANITIZER_FUCHSIA |
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| 323 | # define SANITIZER_MMAP_RANGE_SIZE (1ULL << 38) |
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| 324 | # else |
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| 325 | # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47) |
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| 326 | # endif |
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| 327 | #elif defined(__aarch64__) |
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| 328 | # if SANITIZER_APPLE |
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| 329 | # if SANITIZER_OSX || SANITIZER_IOSSIM |
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| 330 | # define SANITIZER_MMAP_RANGE_SIZE \ |
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| 331 | FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47) |
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| 332 | # else |
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| 333 | // Darwin iOS/ARM64 has a 36-bit VMA, 64GiB VM |
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| 334 | # define SANITIZER_MMAP_RANGE_SIZE \ |
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| 335 | FIRST_32_SECOND_64(1ULL << 32, 1ULL << 36) |
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| 336 | # endif |
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| 337 | # else |
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| 338 | # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 48) |
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| 339 | # endif |
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| 340 | #elif defined(__sparc__) |
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| 341 | # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 52) |
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| 342 | #else |
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| 343 | # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47) |
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| 344 | #endif |
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| 345 | |
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| 346 | // Whether the addresses are sign-extended from the VMA range to the word. |
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| 347 | // The SPARC64 Linux port implements this to split the VMA space into two |
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| 348 | // non-contiguous halves with a huge hole in the middle. |
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| 349 | #if defined(__sparc__) && SANITIZER_WORDSIZE == 64 |
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| 350 | # define SANITIZER_SIGN_EXTENDED_ADDRESSES 1 |
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| 351 | #else |
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| 352 | # define SANITIZER_SIGN_EXTENDED_ADDRESSES 0 |
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| 353 | #endif |
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| 354 | |
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| 355 | // udi16 syscalls can only be used when the following conditions are |
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| 356 | // met: |
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| 357 | // * target is one of arm32, x86-32, sparc32, sh or m68k |
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| 358 | // * libc version is libc5, glibc-2.0, glibc-2.1 or glibc-2.2 to 2.15 |
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| 359 | // built against > linux-2.2 kernel headers |
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| 360 | // Since we don't want to include libc headers here, we check the |
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| 361 | // target only. |
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| 362 | #if defined(__arm__) || SANITIZER_X32 || defined(__sparc__) |
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| 363 | # define SANITIZER_USES_UID16_SYSCALLS 1 |
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| 364 | #else |
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| 365 | # define SANITIZER_USES_UID16_SYSCALLS 0 |
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| 366 | #endif |
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| 367 | |
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| 368 | #if defined(__mips__) |
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| 369 | # define SANITIZER_POINTER_FORMAT_LENGTH FIRST_32_SECOND_64(8, 10) |
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| 370 | #else |
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| 371 | # define SANITIZER_POINTER_FORMAT_LENGTH FIRST_32_SECOND_64(8, 12) |
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| 372 | #endif |
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| 373 | |
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| 374 | /// \macro MSC_PREREQ |
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| 375 | /// \brief Is the compiler MSVC of at least the specified version? |
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| 376 | /// The common \param version values to check for are: |
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| 377 | /// * 1800: Microsoft Visual Studio 2013 / 12.0 |
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| 378 | /// * 1900: Microsoft Visual Studio 2015 / 14.0 |
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| 379 | #ifdef _MSC_VER |
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| 380 | # define MSC_PREREQ(version) (_MSC_VER >= (version)) |
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| 381 | #else |
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| 382 | # define MSC_PREREQ(version) 0 |
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| 383 | #endif |
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| 384 | |
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| 385 | #if SANITIZER_APPLE && defined(__x86_64__) |
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| 386 | # define SANITIZER_NON_UNIQUE_TYPEINFO 0 |
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| 387 | #else |
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| 388 | # define SANITIZER_NON_UNIQUE_TYPEINFO 1 |
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| 389 | #endif |
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| 390 | |
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| 391 | // On linux, some architectures had an ABI transition from 64-bit long double |
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| 392 | // (ie. same as double) to 128-bit long double. On those, glibc symbols |
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| 393 | // involving long doubles come in two versions, and we need to pass the |
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| 394 | // correct one to dlvsym when intercepting them. |
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| 395 | #if SANITIZER_LINUX && (SANITIZER_S390 || SANITIZER_PPC32 || SANITIZER_PPC64V1) |
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| 396 | # define SANITIZER_NLDBL_VERSION "GLIBC_2.4" |
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| 397 | #endif |
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| 398 | |
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| 399 | #if SANITIZER_GO == 0 |
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| 400 | # define SANITIZER_GO 0 |
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| 401 | #endif |
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| 402 | |
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| 403 | // On PowerPC and ARM Thumb, calling pthread_exit() causes LSan to detect leaks. |
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| 404 | // pthread_exit() performs unwinding that leads to dlopen'ing libgcc_s.so. |
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| 405 | // dlopen mallocs "libgcc_s.so" string which confuses LSan, it fails to realize |
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| 406 | // that this allocation happens in dynamic linker and should be ignored. |
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| 407 | #if SANITIZER_PPC || defined(__thumb__) |
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| 408 | # define SANITIZER_SUPPRESS_LEAK_ON_PTHREAD_EXIT 1 |
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| 409 | #else |
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| 410 | # define SANITIZER_SUPPRESS_LEAK_ON_PTHREAD_EXIT 0 |
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| 411 | #endif |
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| 412 | |
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| 413 | #if SANITIZER_FREEBSD || SANITIZER_APPLE || SANITIZER_NETBSD || SANITIZER_SOLARIS |
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| 414 | # define SANITIZER_MADVISE_DONTNEED MADV_FREE |
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| 415 | #else |
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| 416 | # define SANITIZER_MADVISE_DONTNEED MADV_DONTNEED |
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| 417 | #endif |
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| 418 | |
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| 419 | // Older gcc have issues aligning to a constexpr, and require an integer. |
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| 420 | // See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56859 among others. |
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| 421 | #if defined(__powerpc__) || defined(__powerpc64__) |
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| 422 | # define SANITIZER_CACHE_LINE_SIZE 128 |
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| 423 | #else |
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| 424 | # define SANITIZER_CACHE_LINE_SIZE 64 |
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| 425 | #endif |
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| 426 | |
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| 427 | // Enable offline markup symbolizer for Fuchsia. |
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| 428 | #if SANITIZER_FUCHSIA |
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| 429 | # define SANITIZER_SYMBOLIZER_MARKUP 1 |
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| 430 | #else |
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| 431 | # define SANITIZER_SYMBOLIZER_MARKUP 0 |
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| 432 | #endif |
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| 433 | |
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| 434 | // Enable ability to support sanitizer initialization that is |
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| 435 | // compatible with the sanitizer library being loaded via |
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| 436 | // `dlopen()`. |
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| 437 | #if SANITIZER_APPLE |
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| 438 | # define SANITIZER_SUPPORTS_INIT_FOR_DLOPEN 1 |
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| 439 | #else |
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| 440 | # define SANITIZER_SUPPORTS_INIT_FOR_DLOPEN 0 |
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| 441 | #endif |
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| 442 | |
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| 443 | // SANITIZER_SUPPORTS_THREADLOCAL |
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| 444 | // 1 - THREADLOCAL macro is supported by target |
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| 445 | // 0 - THREADLOCAL macro is not supported by target |
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| 446 | #ifndef __has_feature |
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| 447 | // TODO: Support other compilers here |
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| 448 | # define SANITIZER_SUPPORTS_THREADLOCAL 1 |
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| 449 | #else |
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| 450 | # if __has_feature(tls) |
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| 451 | # define SANITIZER_SUPPORTS_THREADLOCAL 1 |
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| 452 | # else |
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| 453 | # define SANITIZER_SUPPORTS_THREADLOCAL 0 |
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| 454 | # endif |
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| 455 | #endif |
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| 456 | |
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| 457 | #if defined(__thumb__) && defined(__linux__) |
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| 458 | // Workaround for |
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| 459 | // https://lab.llvm.org/buildbot/#/builders/clang-thumbv7-full-2stage |
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| 460 | // or |
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| 461 | // https://lab.llvm.org/staging/#/builders/clang-thumbv7-full-2stage |
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| 462 | // It fails *rss_limit_mb_test* without meaningful errors. |
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| 463 | # define SANITIZER_START_BACKGROUND_THREAD_IN_ASAN_INTERNAL 1 |
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| 464 | #else |
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| 465 | # define SANITIZER_START_BACKGROUND_THREAD_IN_ASAN_INTERNAL 0 |
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| 466 | #endif |
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| 467 | |
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| 468 | #endif // SANITIZER_PLATFORM_H |
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| 469 | |
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