1*3cab2bb3Spatrick //===- FuzzerExtFunctions.h - Interface to external functions ---*- C++ -* ===// 2*3cab2bb3Spatrick // 3*3cab2bb3Spatrick // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*3cab2bb3Spatrick // See https://llvm.org/LICENSE.txt for license information. 5*3cab2bb3Spatrick // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*3cab2bb3Spatrick // 7*3cab2bb3Spatrick //===----------------------------------------------------------------------===// 8*3cab2bb3Spatrick // Defines an interface to (possibly optional) functions. 9*3cab2bb3Spatrick //===----------------------------------------------------------------------===// 10*3cab2bb3Spatrick 11*3cab2bb3Spatrick #ifndef LLVM_FUZZER_EXT_FUNCTIONS_H 12*3cab2bb3Spatrick #define LLVM_FUZZER_EXT_FUNCTIONS_H 13*3cab2bb3Spatrick 14*3cab2bb3Spatrick #include <stddef.h> 15*3cab2bb3Spatrick #include <stdint.h> 16*3cab2bb3Spatrick 17*3cab2bb3Spatrick namespace fuzzer { 18*3cab2bb3Spatrick 19*3cab2bb3Spatrick struct ExternalFunctions { 20*3cab2bb3Spatrick // Initialize function pointers. Functions that are not available will be set 21*3cab2bb3Spatrick // to nullptr. Do not call this constructor before ``main()`` has been 22*3cab2bb3Spatrick // entered. 23*3cab2bb3Spatrick ExternalFunctions(); 24*3cab2bb3Spatrick 25*3cab2bb3Spatrick #define EXT_FUNC(NAME, RETURN_TYPE, FUNC_SIG, WARN) \ 26*3cab2bb3Spatrick RETURN_TYPE(*NAME) FUNC_SIG = nullptr 27*3cab2bb3Spatrick 28*3cab2bb3Spatrick #include "FuzzerExtFunctions.def" 29*3cab2bb3Spatrick 30*3cab2bb3Spatrick #undef EXT_FUNC 31*3cab2bb3Spatrick }; 32*3cab2bb3Spatrick } // namespace fuzzer 33*3cab2bb3Spatrick 34*3cab2bb3Spatrick #endif 35