1 //===- FuzzerDefs.h - Internal header for the Fuzzer ------------*- C++ -* ===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // Basic definitions. 10 //===----------------------------------------------------------------------===// 11 12 #ifndef LLVM_FUZZER_DEFS_H 13 #define LLVM_FUZZER_DEFS_H 14 15 #include <cassert> 16 #include <cstddef> 17 #include <cstdint> 18 #include <cstring> 19 #include <string> 20 #include <vector> 21 22 // Platform detection. 23 #ifdef __linux__ 24 #define LIBFUZZER_APPLE 0 25 #define LIBFUZZER_LINUX 1 26 #define LIBFUZZER_WINDOWS 0 27 #elif __APPLE__ 28 #define LIBFUZZER_APPLE 1 29 #define LIBFUZZER_LINUX 0 30 #define LIBFUZZER_WINDOWS 0 31 #elif _WIN32 32 #define LIBFUZZER_APPLE 0 33 #define LIBFUZZER_LINUX 0 34 #define LIBFUZZER_WINDOWS 1 35 #else 36 #error "Support for your platform has not been implemented" 37 #endif 38 39 #define LIBFUZZER_POSIX LIBFUZZER_APPLE || LIBFUZZER_LINUX 40 41 #ifdef __x86_64 42 #define ATTRIBUTE_TARGET_POPCNT __attribute__((target("popcnt"))) 43 #else 44 #define ATTRIBUTE_TARGET_POPCNT 45 #endif 46 47 48 #ifdef __clang__ // avoid gcc warning. 49 # define ATTRIBUTE_NO_SANITIZE_MEMORY __attribute__((no_sanitize("memory"))) 50 # define ALWAYS_INLINE __attribute__((always_inline)) 51 #else 52 # define ATTRIBUTE_NO_SANITIZE_MEMORY 53 # define ALWAYS_INLINE 54 #endif // __clang__ 55 56 #define ATTRIBUTE_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address)) 57 58 #if defined(__has_feature) 59 # if __has_feature(address_sanitizer) 60 # define ATTRIBUTE_NO_SANITIZE_ALL ATTRIBUTE_NO_SANITIZE_ADDRESS 61 # elif __has_feature(memory_sanitizer) 62 # define ATTRIBUTE_NO_SANITIZE_ALL ATTRIBUTE_NO_SANITIZE_MEMORY 63 # else 64 # define ATTRIBUTE_NO_SANITIZE_ALL 65 # endif 66 #else 67 # define ATTRIBUTE_NO_SANITIZE_ALL 68 #endif 69 70 #if LIBFUZZER_WINDOWS 71 #define ATTRIBUTE_INTERFACE __declspec(dllexport) 72 #else 73 #define ATTRIBUTE_INTERFACE __attribute__((visibility("default"))) 74 #endif 75 76 namespace fuzzer { 77 78 template <class T> T Min(T a, T b) { return a < b ? a : b; } 79 template <class T> T Max(T a, T b) { return a > b ? a : b; } 80 81 class Random; 82 class Dictionary; 83 class DictionaryEntry; 84 class MutationDispatcher; 85 struct FuzzingOptions; 86 class InputCorpus; 87 struct InputInfo; 88 struct ExternalFunctions; 89 90 // Global interface to functions that may or may not be available. 91 extern ExternalFunctions *EF; 92 93 typedef std::vector<uint8_t> Unit; 94 typedef std::vector<Unit> UnitVector; 95 typedef int (*UserCallback)(const uint8_t *Data, size_t Size); 96 97 int FuzzerDriver(int *argc, char ***argv, UserCallback Callback); 98 99 struct ScopedDoingMyOwnMemOrStr { 100 ScopedDoingMyOwnMemOrStr() { DoingMyOwnMemOrStr++; } 101 ~ScopedDoingMyOwnMemOrStr() { DoingMyOwnMemOrStr--; } 102 static int DoingMyOwnMemOrStr; 103 }; 104 105 inline uint8_t Bswap(uint8_t x) { return x; } 106 inline uint16_t Bswap(uint16_t x) { return __builtin_bswap16(x); } 107 inline uint32_t Bswap(uint32_t x) { return __builtin_bswap32(x); } 108 inline uint64_t Bswap(uint64_t x) { return __builtin_bswap64(x); } 109 110 uint8_t *ExtraCountersBegin(); 111 uint8_t *ExtraCountersEnd(); 112 void ClearExtraCounters(); 113 114 } // namespace fuzzer 115 116 #endif // LLVM_FUZZER_DEFS_H 117
