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
17namespace fuzzer {
18
19struct 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