rsp_init (). Called at start up to initialize the RSP server. It initializes global data structures (discussed in Section 4.3.2) and then sets up a TCP/IP listener on the configured RSP port.

handle_rsp (). Called repeatedly when the processor is stalled to read packets from any GDB client and process them.

rsp_exception (). Called from the simulator to record any exceptions that occur, for subsequent use by handle_rsp (). It takes a single argument, the OpenRISC 1000 exception handler entry address, which is mapped by the RSP server to the equivalent GDB target signal.