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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/>.

// ----------------------------------------------------------------------------

// $Id$

#ifndef OR1200_MONITOR_SC__H

#define OR1200_MONITOR_SC__H

#include <fstream>

#include <ctime>

#include "systemc.h"

#include "OrpsocAccess.h"

#include "MemoryLoad.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,

                   MemoryLoad              *_memoryload,

                   int argc,

                   char *argv[]);

  // Method to check instructions

  void  checkInstruction();

  // Methods to setup and output state of processor to a file

  void displayState();

  void displayStateBinary();

  // Methods to generate the call and return list during execution

  void callLog();

  // Method to calculate performance of the sim

  void perfSummary();

  // Method to print out the command-line switches for this module's options  

  void printSwitches();

  // Method to print out the usage for each option

  void printUsage();

  // Method to dump simulation's RAM contents at finish

  void memdump();

  // Method used for monitoring and logging transactions on the system bus

  void busMonitor();

  // The ports

  sc_in<bool>   clk;

private:

#define DEFAULT_EXEC_LOG_FILE "or1200_exec.log"

#define DEFAULT_PROF_FILE "sim.profile"

#define DEFAULT_MEMDUMP_FILE "vorpsoc_ram.dump"

#define DEFAULT_BUS_LOG_FILE "bus_trans.log"

  // 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

  static const uint32_t NOP_CNT_RESET = 0x15000005; //!< Reset statistics counters

  static const uint32_t NOP_CNT_RESET1 = 0x15000007;        /* Reset statistics counter 1 */

  static const uint32_t NOP_CNT_RESET2 = 0x15000008;        /* Reset statistics counter 2 */

  static const uint32_t NOP_CNT_RESET3 = 0x15000009;        /* Reset statistics counter 3 */

  static const uint32_t NOP_MEM_STATS_RESET  = 0x15000010; //!< Reset memory statistics counters

  static const uint32_t NOP_CNT_RESET_DIFFERENCE = 0x15000006; //!< Reset stats counters, print 

  // Variables for processor status output

  ofstream statusFile;

  ofstream profileFile;

  bool profiling_enabled;

  bool logging_enabled;

  bool logfile_name_provided;

  bool logging_regs;

  bool binary_log_format;

  bool exit_perf_summary_enabled;

  bool monitor_for_crash;

  int lookslikewevecrashed_count, crash_monitor_buffer_head;

#define CRASH_MONITOR_BUFFER_SIZE 32

  uint32_t crash_monitor_buffer[CRASH_MONITOR_BUFFER_SIZE][2]; //PC, Insn

  bool wait_for_stall_cmd_response;

  unsigned long long insn_count, insn_count_rst;

  unsigned long long cycle_count, cycle_count_rst;

  unsigned long long cycles_1, cycles_2, cycles_3; // Cycle counters for l.nop insns

  ofstream memdumpFile;

  string memdumpFileName;

  bool do_memdump;

  int memdump_start_addr, memdump_end_addr;

  bool bus_trans_log_enabled, bus_trans_log_name_provided, bus_trans_log_start_delay_enable;

  sc_time bus_trans_log_start_delay;

  enum busLogStates { BUS_LOG_IDLE, BUS_LOG_WAIT_FOR_ACK };

  ofstream busTransLog;

  //! Time measurement variable - for calculating performance of the sim

  clock_t start;

  //! The accessor for the Orpsoc instance

  OrpsocAccess *accessor;

  //! The memory loading object

  MemoryLoad *memoryload;

};      // Or1200MonitorSC ()

#endif  // OR1200_MONITOR_SC__H