compiler-rt/lib/fuzzer/FuzzerExtFunctions.h

   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