File: DataFlow.h

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/*===- DataFlow.h - a standalone DataFlow trace                     -------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// Internal header file to connect DataFlow.cpp and DataFlowCallbacks.cpp.
//===----------------------------------------------------------------------===*/

#ifndef __LIBFUZZER_DATAFLOW_H
#define __LIBFUZZER_DATAFLOW_H

#include <cstddef>
#include <cstdint>
#include <sanitizer/dfsan_interface.h>

// This data is shared between DataFlowCallbacks.cpp and DataFlow.cpp.
struct CallbackData {
  size_t NumFuncs, NumGuards;
  const uintptr_t *PCsBeg, *PCsEnd;
  dfsan_label *FuncLabels;  // Array of NumFuncs elements.
  bool *BBExecuted;         // Array of NumGuards elements.
};

extern CallbackData __dft;

enum {
  PCFLAG_FUNC_ENTRY = 1,
};

#endif  // __LIBFUZZER_DATAFLOW_H