text: /*
   * Copyright 2021 Code Intelligence GmbH
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #pragma once
  
  #include <cstdint>
  
  // This file declares variants of the libFuzzer compare, division, switch and
  // gep hooks that accept an additional caller_pc argument that can be used to
  // pass a custom value that is recorded as the caller's instruction pointer
  // ("program counter"). This allows synthetic program counters obtained from
  // Java coverage information to be used with libFuzzer's value profile, with
  // which it records detailed information about the result of compares and
  // associates it with particular coverage locations.
  //
  // Note: Only the lower 12 bits of the caller_pc argument are used by
  // libFuzzer.
  extern "C" {
  void __sanitizer_cov_trace_cmp4_with_pc(void *caller_pc, uint32_t arg1,
                                          uint32_t arg2);
  void __sanitizer_cov_trace_cmp8_with_pc(void *caller_pc, uint64_t arg1,
                                          uint64_t arg2);
  
  void __sanitizer_cov_trace_switch_with_pc(void *caller_pc, uint64_t val,
                                            uint64_t *cases);
  
  void __sanitizer_cov_trace_div4_with_pc(void *caller_pc, uint32_t val);
  void __sanitizer_cov_trace_div8_with_pc(void *caller_pc, uint64_t val);
  
  void __sanitizer_cov_trace_gep_with_pc(void *caller_pc, uintptr_t idx);
  
  void __sanitizer_cov_trace_pc_indir_with_pc(void *caller_pc, uintptr_t callee);
  }
  
  void CalibrateTrampoline();
  