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// ----------------------------------------------------------------------------
 
// SystemC OpenRISC 1200 Monitor: definition
 
// Copyright (C) 2008  Embecosm Limited <info@embecosm.com>
 
// Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
// Contributor Julius Baxter <jb@orsoc.se>
 
// This file is part of the cycle accurate model of the OpenRISC 1000 based
// system-on-chip, ORPSoC, built using Verilator.
 
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or (at your
// option) any later version.
 
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
// License for more details.
 
// You should have received a copy of the GNU Lesser General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
// ----------------------------------------------------------------------------
 
// $Id: Or1200MonitorSC.h 288 2009-02-03 15:08:00Z jeremy $
 
#ifndef OR1200_MONITOR_SC__H
#define OR1200_MONITOR_SC__H
 
#include <fstream>
#include <ctime>
 
#include "systemc.h"
 
#include "OrpsocAccess.h"
 
 
//! Monitor for special l.nop instructions
 
//! This class is based on the or1200_monitor.v of the Verilog test bench. It
//! wakes up on each posedge clock to check for "special" l.nop instructions,
//! which need processing.
 
class Or1200MonitorSC
  : public sc_core::sc_module
{
public:
 
  // Constructor
  Or1200MonitorSC (sc_core::sc_module_name  name,
		   OrpsocAccess            *_accessor,
		   int argc, 
		   char *argv[]);
 
  // Method to check instructions
  void  checkInstruction();
 
  // Methods to setup and output state of processor to a file
  void displayState();
 
  // Function to calculate performance of the sim
  void perfSummary();
 
  // Print out the command-line switches for this module's options  
  void printSwitches();
 
  // Print out the usage for each option
  void printUsage();
 
  // The ports
  sc_in<bool>   clk;
 
private:
 
  // Special NOP instructions
  static const uint32_t NOP_NOP    = 0x15000000;  //!< Normal nop instruction
  static const uint32_t NOP_EXIT   = 0x15000001;  //!< End of simulation
  static const uint32_t NOP_REPORT = 0x15000002;  //!< Simple report
  static const uint32_t NOP_PRINTF = 0x15000003;  //!< Simprintf instruction
  static const uint32_t NOP_PUTC   = 0x15000004;  //!< Putc instruction
 
  // Variables for processor status output
  ofstream statusFile;
  int logging_enabled;
  int exit_perf_summary_enabled;
  int insn_count;
 
  // Time measurement variables - for calculating performance of the sim
  clock_t start;
 
  //! The accessor for the Orpsoc instance
  OrpsocAccess *accessor;
 
};	// Or1200MonitorSC ()
 
#endif	// OR1200_MONITOR_SC__H