1 //===- FuzzerExtFunctions.h - Interface to external functions ---*- C++ -* ===//
2 //
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
6 //
7 //===----------------------------------------------------------------------===//
8 // Defines an interface to (possibly optional) functions.
9 //===----------------------------------------------------------------------===//
10 
11 #ifndef LLVM_FUZZER_EXT_FUNCTIONS_H
12 #define LLVM_FUZZER_EXT_FUNCTIONS_H
13 
14 #include <stddef.h>
15 #include <stdint.h>
16 
17 namespace fuzzer {
18 
19 struct ExternalFunctions {
20   // Initialize function pointers. Functions that are not available will be set
21   // to nullptr.  Do not call this constructor  before ``main()`` has been
22   // entered.
23   ExternalFunctions();
24 
25 #define EXT_FUNC(NAME, RETURN_TYPE, FUNC_SIG, WARN)                            \
26   RETURN_TYPE(*NAME) FUNC_SIG = nullptr
27 
28 #include "FuzzerExtFunctions.def"
29 
30 #undef EXT_FUNC
31 };
32 } // namespace fuzzer
33 
34 #endif
35