text: /// @copyright
  /// Copyright (C) 2020 Assured Information Security, Inc.
  ///
  /// @copyright
  /// Permission is hereby granted, free of charge, to any person obtaining a copy
  /// of this software and associated documentation files (the "Software"), to deal
  /// in the Software without restriction, including without limitation the rights
  /// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  /// copies of the Software, and to permit persons to whom the Software is
  /// furnished to do so, subject to the following conditions:
  ///
  /// @copyright
  /// The above copyright notice and this permission notice shall be included in
  /// all copies or substantial portions of the Software.
  ///
  /// @copyright
  /// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  /// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  /// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  /// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  /// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  /// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  /// SOFTWARE.
  
  #include "integration_utils.hpp"
  
  #include <mk_interface.hpp>
  
  #include <bsl/debug.hpp>
  #include <bsl/exit_code.hpp>
  #include <bsl/safe_integral.hpp>
  #include <bsl/unlikely.hpp>
  
  namespace integration
  {
      /// <!-- description -->
      ///   @brief Implements the main entry function for this integration
      ///     test
      ///
      /// <!-- inputs/outputs -->
      ///   @param version the version of the spec implemented by the
      ///     microkernel. This can be used to ensure the extension and the
      ///     microkernel speak the same ABI.
      ///
      extern "C" void
      ext_main_entry(bsl::uint32 const version) noexcept
      {
          if (bsl::unlikely(!syscall::bf_is_spec1_supported(version))) {
              bsl::error() << "integration test not supported\n" << bsl::here();
              return syscall::bf_control_op_exit();
          }
  
          bsl::error() << "extension purposely exiting early\n";
          syscall::bf_control_op_exit();
      }
  }
  