text: /*
   * Copyright 2021 Google Inc.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met: redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer;
   * redistributions in binary form must reproduce the above copyright
   * notice, this list of conditions and the following disclaimer in the
   * documentation and/or other materials provided with the distribution;
   * neither the name of the copyright holders nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "sim/workload.hh"
  
  #include "base/remote_gdb.hh"
  #include "config/the_isa.hh"
  #include "cpu/thread_context.hh"
  #include "sim/debug.hh"
  
  namespace gem5
  {
  
  void
  Workload::registerThreadContext(ThreadContext *tc)
  {
      std::set<ThreadContext *>::iterator it;
      bool success;
      std::tie(it, success) = threads.insert(tc);
      panic_if(!success, "Failed to add thread context %d.",
              tc->contextId());
  
  #   if THE_ISA != NULL_ISA
      if (gdb)
          gdb->addThreadContext(tc);
  #   endif
  }
  
  void
  Workload::replaceThreadContext(ThreadContext *tc)
  {
      ContextID id = tc->contextId();
  
      for (auto *old: threads) {
          if (old->contextId() != id)
              continue;
          threads.erase(old);
  
          std::set<ThreadContext *>::iterator it;
          bool success;
          std::tie(it, success) = threads.insert(tc);
          panic_if(!success,
                  "Failed to insert replacement thread context %d.", id);
  
  #       if THE_ISA != NULL_ISA
          if (gdb)
              gdb->replaceThreadContext(tc);
  #       endif
  
          return;
      }
      panic("Replacement thread context %d doesn't match any known id.", id);
  }
  
  bool
  Workload::trapToGdb(int signal, ContextID ctx_id)
  {
  #   if THE_ISA != NULL_ISA
      if (gdb) {
          gdb->trap(ctx_id, signal);
          return true;
      }
  #   endif
      return false;
  };
  
  void
  Workload::startup()
  {
      SimObject::startup();
  
  #   if THE_ISA != NULL_ISA
      // Now that we're about to start simulation, wait for GDB connections if
      // requested.
      if (gdb && waitForRemoteGDB) {
          inform("%s: Waiting for a remote GDB connection on port %d.", name(),
                  gdb->port());
          gdb->connect();
      }
  #   endif
  }
  
  } // namespace gem5
  