1 //===- FuzzerDefs.h - Internal header for the Fuzzer ------------*- C++ -* ===//
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-exception
7 //===----------------------------------------------------------------------===//
9 //===----------------------------------------------------------------------===//
11 #ifndef LLVM_FUZZER_DEFS_H
12 #define LLVM_FUZZER_DEFS_H
24 // Platform detection.
26 #define LIBFUZZER_APPLE 0
27 #define LIBFUZZER_FUCHSIA 0
28 #define LIBFUZZER_LINUX 1
29 #define LIBFUZZER_NETBSD 0
30 #define LIBFUZZER_FREEBSD 0
31 #define LIBFUZZER_OPENBSD 0
32 #define LIBFUZZER_WINDOWS 0
33 #define LIBFUZZER_EMSCRIPTEN 0
35 #define LIBFUZZER_APPLE 1
36 #define LIBFUZZER_FUCHSIA 0
37 #define LIBFUZZER_LINUX 0
38 #define LIBFUZZER_NETBSD 0
39 #define LIBFUZZER_FREEBSD 0
40 #define LIBFUZZER_OPENBSD 0
41 #define LIBFUZZER_WINDOWS 0
42 #define LIBFUZZER_EMSCRIPTEN 0
44 #define LIBFUZZER_APPLE 0
45 #define LIBFUZZER_FUCHSIA 0
46 #define LIBFUZZER_LINUX 0
47 #define LIBFUZZER_NETBSD 1
48 #define LIBFUZZER_FREEBSD 0
49 #define LIBFUZZER_OPENBSD 0
50 #define LIBFUZZER_WINDOWS 0
51 #define LIBFUZZER_EMSCRIPTEN 0
53 #define LIBFUZZER_APPLE 0
54 #define LIBFUZZER_FUCHSIA 0
55 #define LIBFUZZER_LINUX 0
56 #define LIBFUZZER_NETBSD 0
57 #define LIBFUZZER_FREEBSD 1
58 #define LIBFUZZER_OPENBSD 0
59 #define LIBFUZZER_WINDOWS 0
60 #define LIBFUZZER_EMSCRIPTEN 0
62 #define LIBFUZZER_APPLE 0
63 #define LIBFUZZER_FUCHSIA 0
64 #define LIBFUZZER_LINUX 0
65 #define LIBFUZZER_NETBSD 0
66 #define LIBFUZZER_FREEBSD 0
67 #define LIBFUZZER_OPENBSD 1
68 #define LIBFUZZER_WINDOWS 0
69 #define LIBFUZZER_EMSCRIPTEN 0
71 #define LIBFUZZER_APPLE 0
72 #define LIBFUZZER_FUCHSIA 0
73 #define LIBFUZZER_LINUX 0
74 #define LIBFUZZER_NETBSD 0
75 #define LIBFUZZER_FREEBSD 0
76 #define LIBFUZZER_OPENBSD 0
77 #define LIBFUZZER_WINDOWS 1
78 #define LIBFUZZER_EMSCRIPTEN 0
80 #define LIBFUZZER_APPLE 0
81 #define LIBFUZZER_FUCHSIA 1
82 #define LIBFUZZER_LINUX 0
83 #define LIBFUZZER_NETBSD 0
84 #define LIBFUZZER_FREEBSD 0
85 #define LIBFUZZER_OPENBSD 0
86 #define LIBFUZZER_WINDOWS 0
87 #define LIBFUZZER_EMSCRIPTEN 0
89 #define LIBFUZZER_APPLE 0
90 #define LIBFUZZER_FUCHSIA 0
91 #define LIBFUZZER_LINUX 0
92 #define LIBFUZZER_NETBSD 0
93 #define LIBFUZZER_FREEBSD 0
94 #define LIBFUZZER_OPENBSD 0
95 #define LIBFUZZER_WINDOWS 0
96 #define LIBFUZZER_EMSCRIPTEN 1
98 #error "Support for your platform has not been implemented"
101 #if defined(_MSC_VER) && !defined(__clang__)
102 // MSVC compiler is being used.
103 #define LIBFUZZER_MSVC 1
105 #define LIBFUZZER_MSVC 0
108 #ifndef __has_attribute
109 # define __has_attribute(x) 0
112 #define LIBFUZZER_POSIX \
113 (LIBFUZZER_APPLE || LIBFUZZER_LINUX || LIBFUZZER_NETBSD || \
114 LIBFUZZER_FREEBSD || LIBFUZZER_OPENBSD || LIBFUZZER_EMSCRIPTEN)
117 # if __has_attribute(target)
118 # define ATTRIBUTE_TARGET_POPCNT __attribute__((target("popcnt")))
120 # define ATTRIBUTE_TARGET_POPCNT
123 # define ATTRIBUTE_TARGET_POPCNT
127 #ifdef __clang__ // avoid gcc warning.
128 # if __has_attribute(no_sanitize)
129 # define ATTRIBUTE_NO_SANITIZE_MEMORY __attribute__((no_sanitize("memory")))
131 # define ATTRIBUTE_NO_SANITIZE_MEMORY
133 # define ALWAYS_INLINE __attribute__((always_inline))
135 # define ATTRIBUTE_NO_SANITIZE_MEMORY
136 # define ALWAYS_INLINE
139 #if LIBFUZZER_WINDOWS
140 #define ATTRIBUTE_NO_SANITIZE_ADDRESS
142 #define ATTRIBUTE_NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address))
145 #if LIBFUZZER_WINDOWS
146 #define ATTRIBUTE_ALIGNED(X) __declspec(align(X))
147 #define ATTRIBUTE_INTERFACE __declspec(dllexport)
148 // This is used for __sancov_lowest_stack which is needed for
149 // -fsanitize-coverage=stack-depth. That feature is not yet available on
150 // Windows, so make the symbol static to avoid linking errors.
151 #define ATTRIBUTES_INTERFACE_TLS_INITIAL_EXEC static
152 #define ATTRIBUTE_NOINLINE __declspec(noinline)
154 #define ATTRIBUTE_ALIGNED(X) __attribute__((aligned(X)))
155 #define ATTRIBUTE_INTERFACE __attribute__((visibility("default")))
156 #define ATTRIBUTES_INTERFACE_TLS_INITIAL_EXEC \
157 ATTRIBUTE_INTERFACE __attribute__((tls_model("initial-exec"))) thread_local
159 #define ATTRIBUTE_NOINLINE __attribute__((noinline))
162 #if defined(__has_feature)
163 # if __has_feature(address_sanitizer)
164 # define ATTRIBUTE_NO_SANITIZE_ALL ATTRIBUTE_NO_SANITIZE_ADDRESS
165 # elif __has_feature(memory_sanitizer)
166 # define ATTRIBUTE_NO_SANITIZE_ALL ATTRIBUTE_NO_SANITIZE_MEMORY
168 # define ATTRIBUTE_NO_SANITIZE_ALL
171 # define ATTRIBUTE_NO_SANITIZE_ALL
176 template <class T> T Min(T a, T b) { return a < b ? a : b; }
177 template <class T> T Max(T a, T b) { return a > b ? a : b; }
181 class DictionaryEntry;
182 class MutationDispatcher;
183 struct FuzzingOptions;
186 struct ExternalFunctions;
188 // Global interface to functions that may or may not be available.
189 extern ExternalFunctions *EF;
191 // We are using a custom allocator to give a different symbol name to STL
192 // containers in order to avoid ODR violations.
194 class fuzzer_allocator: public std::allocator<T> {
196 fuzzer_allocator() = default;
199 fuzzer_allocator(const fuzzer_allocator<U>&) {}
201 template<class Other>
202 struct rebind { typedef fuzzer_allocator<Other> other; };
206 using Vector = std::vector<T, fuzzer_allocator<T>>;
209 using Set = std::set<T, std::less<T>, fuzzer_allocator<T>>;
211 typedef Vector<uint8_t> Unit;
212 typedef Vector<Unit> UnitVector;
213 typedef int (*UserCallback)(const uint8_t *Data, size_t Size);
215 int FuzzerDriver(int *argc, char ***argv, UserCallback Callback);
217 uint8_t *ExtraCountersBegin();
218 uint8_t *ExtraCountersEnd();
219 void ClearExtraCounters();
221 extern bool RunningUserCallback;
223 } // namespace fuzzer
225 #endif // LLVM_FUZZER_DEFS_H