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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 trace to stdout

        void printTrace();

        // 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();

        // Method to do simulator assisted printf'ing

        void simPrintf(uint32_t stackaddr, uint32_t regparam);

        // 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 = 0;       //!< Normal nop instruction

        static const uint32_t NOP_EXIT = 1;     //!< End of simulation

        static const uint32_t NOP_REPORT = 2;   //!< Simple report

        static const uint32_t NOP_PRINTF = 3;   //!< Simprintf instruction

        static const uint32_t NOP_PUTC = 4;     //!< Putc instruction

        static const uint32_t NOP_CNT_RESET = 5;        //!< Reset statistics counters

        static const uint32_t NOP_GET_TICKS = 6;        //!< Get # ticks running

        static const uint32_t NOP_GET_PS = 7;   //!< Get picosecs/cycle

        static const uint32_t NOP_CNT_RESET1 = 16;      /* Reset statistics counter 1 */

        static const uint32_t NOP_CNT_RESET2 = 17;      /* Reset statistics counter 2 */

        static const uint32_t NOP_CNT_RESET3 = 18;      /* Reset statistics counter 3 */

        static const uint32_t NOP_MEM_STATS_RESET = 32; //!< Reset memory statistics counters

        static const uint32_t NOP_CNT_RESET_DIFFERENCE = 48;    //!< Reset stats counters, print 

        // Variables for processor status output

        ofstream statusFile;

        ofstream profileFile;

        bool profiling_enabled;

        bool trace_enabled;

        bool logging_enabled;

        bool logfile_name_provided;

        bool logging_regs;

        bool binary_log_format;

        bool perf_summary;

        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