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//////////////////////////////////////////////////////////////////////

////                                                              ////

////  OR1200's simulation monitor                                 ////

////                                                              ////

////  This file is part of the OpenRISC 1200 project              ////

////  http://www.opencores.org/cores/or1k/                        ////

////                                                              ////

////  Description                                                 ////

////  Simulation monitor                                          ////

////                                                              ////

////  To Do:                                                      ////

////   - move it to bench                                         ////

////                                                              ////

////  Author(s):                                                  ////

////      - Damjan Lampret, lampret@opencores.org                 ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

////                                                              ////

//// Copyright (C) 2000 Authors and OPENCORES.ORG                 ////

////                                                              ////

//// This source file may be used and distributed without         ////

//// restriction provided that this copyright statement is not    ////

//// removed from the file and that any derivative work contains  ////

//// the original copyright notice and the associated disclaimer. ////

////                                                              ////

//// This source file 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 2.1 of the License, or (at your option) any   ////

//// later version.                                               ////

////                                                              ////

//// This source 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 source; if not, download it   ////

//// from http://www.opencores.org/lgpl.shtml                     ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

//

// CVS Revision History

//

// $Log: not supported by cvs2svn $

// Revision 1.1  2001/08/20 18:17:52  damjan

// Initial revision

//

// Revision 1.1  2001/08/13 03:37:07  lampret

// Added monitor.v and timescale.v

//

// Revision 1.1  2001/07/20 00:46:03  lampret

// Development version of RTL. Libraries are missing.

//

//

`include "defines.v"

// Enable debug_mem task. Only affects simulation.

`define enable_debug_mem

// Enable display_arch_state task. Only affects simulation.

`define enable_display_arch_state

module or1200_monitor;

task monitortask;

begin

end

endtask

integer fexe;

reg [23:0]  ref;

initial begin

        ref = 0;

        fexe = $fopen("executed.log");

        $timeformat (-9, 2, " ns", 12);

end

task finish_simulation;

begin

        $fclose(fexe);

        display_arch_state;

        display_memory(0, 8191);

        $shm_save;

        $shm_close;

        $dumpflush;

        $finish;

end

endtask

task caught_sys203;

begin

        $display("simulation terminated due to l.sys 203");

        finish_simulation;

end

endtask

task display_arch_state;

reg [5:0] i;

reg [31:0] r;

integer j;

begin

`ifdef enable_display_arch_state

        ref = ref + 1;

//      if (ref == 17890) begin

//              $dumpfile("dump.vcd");

//              $dumpvars(20,tb_or1200);

//      end

        $fwrite(fexe, "\nEXECUTED(): %h:  %h", xess_top.i_xess_fpga.risc.cpu.except.wb_pc, xess_top.i_xess_fpga.risc.cpu.id.wb_insn);

        for(i = 0; i < 32; i = i + 1) begin

                if (i % 4 == 0)

                        $fdisplay(fexe);

`ifdef XILINX_RAMB4

                r = 32'h0000_0000;

                for(j = 0; j < 16; j = j + 1) begin

                        r[j] = xess_top.i_xess_fpga.risc.cpu.rf.rf_a.ramb4_s16_0.mem[i*16+j];

                end

                for(j = 0; j < 16; j = j + 1) begin

                        r[j+16] = xess_top.i_xess_fpga.risc.cpu.rf.rf_a.ramb4_s16_1.mem[i*16+j];

                end

                $fwrite(fexe, "GPR%d: %h  ", i, r);

`else

`ifdef XILINX_RAM32X1D

`else

`ifdef ARTISAN_SDP

`else

                $fwrite(fexe, "GPR%d: %h  ", i, xess_top.i_xess_fpga.risc.cpu.rf.rf_a.mem[i]);

`endif

`endif

`endif

        end

        $fdisplay(fexe);

        r = xess_top.i_xess_fpga.risc.cpu.sprs.sr;

        $fwrite(fexe, "SR   : %h  ", r);

        r = xess_top.i_xess_fpga.risc.cpu.sprs.epcr;

        $fwrite(fexe, "EPCR0: %h  ", r);

        r = xess_top.i_xess_fpga.risc.cpu.sprs.eear;

        $fwrite(fexe, "EEAR0: %h  ", r);

        r = xess_top.i_xess_fpga.risc.cpu.sprs.esr;

        $fdisplay(fexe, "ESR0 : %h", r);

//      $fdisplay(fexe);

`endif

end

endtask

task display_memory;

input [31:0] from;

input [31:0] to;

integer i;

begin

//      for(i = from; i < to; i = i + 4)

//              $display("mem[%h] = %h   mem[%h] = %h   mem[%h] = %h   mem[%h] = %h ",

//              i, sram2.ramCore[i], i+4, sram2.ramCore[i+1], i+8, sram2.ramCore[i+2], i+12, sram2.ramCore[i+3]); //zSramX32

//              i<<2, sram2.mem[i], (i<<2)+4, sram2.mem[i+1], (i<<2)+8, sram2.mem[i+2], (i<<2)+12, sram2.mem[i+3]); //sram32kx32

end

endtask

task debug_mem;

input [79:0] device;

input write;

input [31:0] addr;

input [31:0] data;

input [3:0] bs;

begin

`ifdef enable_debug_mem

        if (write)

                $display( "%t: WRITE to %s addr 0x%h with a value of 0x%h using byte enables of 'b%b", $time, device, addr, data, bs);

        else

                $display( "%t: READ from %s addr 0x%h which contains a value of 0x%h using byte enables of 'b%b", $time, device, addr, data, bs);

`endif

end

endtask

always @(posedge xess_top.i_xess_fpga.risc.cpu.id.clk)

        if (!xess_top.i_xess_fpga.risc.cpu.id.wb_freeze) begin

                #2;

                if ((xess_top.i_xess_fpga.risc.cpu.id.wb_insn != 32'h1500ffff) && (xess_top.i_xess_fpga.risc.cpu.id.wb_insn != 32'h14000000)

                        && (xess_top.i_xess_fpga.risc.cpu.id.wb_insn != 32'h14004444))

                        display_arch_state;

                if (xess_top.i_xess_fpga.risc.cpu.id.ex_insn == 32'h200000cb)  // small hack to stop simulation (l.sys 203)

                        caught_sys203;

        end

endmodule