Subversion Repositories openrisc_2011-10-31

/* dumpverilog.c -- Dumps memory region as Verilog representation

   or as hex code

   Copyright (C) 2000 Damjan Lampret, lampret@opencores.org

   Copyright (C) 2008 Embecosm Limited

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

   This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator.

   This program is free software; you can redistribute it and/or modify it

   under the terms of the GNU 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 General Public License for

   more details.

   You should have received a copy of the GNU General Public License along

   with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* This program is commented throughout in a fashion suitable for processing

   with Doxygen. */

/* Verilog dump can be used for stimulating OpenRISC Verilog RTL models. */

/* Autoconf and/or portability configuration */

#include "config.h"

/* Package includes */

#include "sim-config.h"

#include "arch.h"

#include "abstract.h"

#include "labels.h"

#include "opcode/or32.h"

#define DW 32                   /* Data width of mem model generated by */

                                /* dumpverilog in bits */

#define DWQ (DW/8)              /* Same as DW but units are bytes */

#define DISWIDTH 25             /* Width of disassembled message in bytes */

#define OR1K_MEM_VERILOG_HEADER(MODNAME, FROMADDR, TOADDR, DISWIDTH) "\n"\

"include \"general.h\"\n\n"\

"`timescale 1ns/100ps\n\n"\

"// Simple dw-wide Sync SRAM with initial content generated by or1ksim.\n"\

"// All control, data in and addr signals are sampled at rising clock edge  \n"\

"// Data out is not registered. Address bits specify dw-word (narrowest \n"\

"// addressed data is not byte but dw-word !). \n"\

"// There are still some bugs in generated output (dump word aligned regions)\n\n"\

"module %s(clk, data, addr, ce, we, disout);\n\n"\

"parameter dw = 32;\n"\

"parameter amin = %" PRIdREG ";\n\n"\

"parameter amax = %" PRIdREG ";\n\n"\

"input clk;\n"\

"inout [dw-1:0] data;\n"\

"input [31:0] addr;\n"\

"input ce;\n"\

"input we;\n"\

"output [%d:0] disout;\n\n"\

"reg  [%d:0] disout;\n"\

"reg  [dw-1:0] mem [amax:amin];\n"\

"reg  [%d:0] dis [amax:amin];\n"\

"reg  [dw-1:0] dataout;\n"\

"tri  [dw-1:0] data = (ce && ~we) ? dataout : 'bz;\n\n"\

"initial begin\n", MODNAME, FROMADDR, TOADDR, DISWIDTH-1, DISWIDTH-1, DISWIDTH-1

#define OR1K_MEM_VERILOG_FOOTER "\n\

end\n\n\

always @(posedge clk) begin\n\

        if (ce && ~we) begin\n\

                dataout <= #1 mem[addr];\n\

                disout <= #1 dis[addr];\n\

                $display(\"or1k_mem: reading mem[%%0d]:%%h dis: %%0s\", addr, dataout, dis[addr]);\n\

        end else\n\

        if (ce && we) begin\n\

                mem[addr] <= #1 data;\n\

                dis[addr] <= #1 \"(data)\";\n\

                $display(\"or1k_mem: writing mem[%%0d]:%%h dis: %%0s\", addr, mem[addr], dis[addr]);\n\

        end\n\

end\n\n\

endmodule\n"

#define LABELEND_CHAR   ":"

void

dumpverilog (char *verilog_modname, oraddr_t from, oraddr_t to)

{

  unsigned int i, done = 0;

  struct label_entry *tmp;

  char dis[DISWIDTH + 100];

  uint32_t insn;

  int index;

  PRINTF ("// This file was generated by or1ksim version %s\n",

          PACKAGE_VERSION);

  PRINTF (OR1K_MEM_VERILOG_HEADER

          (verilog_modname, from / DWQ, to / DWQ, (DISWIDTH * 8)));

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

    {

      if (!(i & 3))

        {

          insn = eval_direct32 (i, 0, 0);

          index = or1ksim_insn_decode (insn);

          if (index >= 0)

            {

              if (verify_memoryarea (i) && (tmp = get_label (i)))

                if (tmp)

                  PRINTF ("\n//\t%s%s", tmp->name, LABELEND_CHAR);

              PRINTF ("\n\tmem['h%x] = %d'h%.8" PRIx32 ";", i / DWQ, DW,

                      eval_direct32 (i, 0, 0));

              or1ksim_disassemble_insn (insn);

              strcpy (dis, or1ksim_disassembled);

              if (strlen (dis) < DISWIDTH)

                memset (dis + strlen (dis), ' ', DISWIDTH);

              dis[DISWIDTH] = '\0';

              PRINTF ("\n\tdis['h%x] = {\"%s\"};", i / DWQ, dis);

              dis[0] = '\0';

              i += or1ksim_insn_len (index) - 1;

              done = 1;

              continue;

            }

        }

      if (i % 64 == 0)

        PRINTF ("\n");

      PRINTF ("\n\tmem['h%x] = 'h%.2x;", i / DWQ, eval_direct8 (i, 0, 0));

      done = 1;

    }

  if (done)

    {

      PRINTF (OR1K_MEM_VERILOG_FOOTER);

      return;

    }

  /* this needs to be fixed */

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

    {

      if (i % 8 == 0)

        PRINTF ("\n%.8x:  ", i);

      /* don't print ascii chars below 0x20. */

      if (eval_direct32 (i, 0, 0) < 0x20)

        PRINTF ("0x%.2x     ", (uint8_t) eval_direct32 (i, 0, 0));

      else

        PRINTF ("0x%.2x'%c'  ", (uint8_t) eval_direct32 (i, 0, 0),

                (char) eval_direct32 (i, 0, 0));

    }

  PRINTF (OR1K_MEM_VERILOG_FOOTER);

}

void

dumphex (oraddr_t from, oraddr_t to)

{

  oraddr_t i;

  uint32_t insn;

  int index;

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

    {

      if (!(i & 3))

        {

          insn = eval_direct32 (i, 0, 0);

          index = or1ksim_insn_decode (insn);

          if (index >= 0)

            {

              PRINTF ("%.8" PRIx32 "\n", eval_direct32 (i, 0, 0));

              i += or1ksim_insn_len (index) - 1;

              continue;

            }

        }

      PRINTF ("%.2x\n", eval_direct8 (i, 0, 0));

    }

}