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

// SystemC OpenRISC 1200 Monitor: definition

// Copyright (C) 2008  Embecosm Limited <info@embecosm.com>

// Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>

// 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 "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);

  // Method to check instructions

  void  checkInstruction();

  // 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

  //! The accessor for the Orpsoc instance

  OrpsocAccess *accessor;

};      // Or1200MonitorSC ()

#endif  // OR1200_MONITOR_SC__H