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//==========================================================================

//

//      mcmp.c

//

//      RedBoot memory compare (mcmp) routine

//

//==========================================================================

// ####ECOSGPLCOPYRIGHTBEGIN####                                            

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

// This file is part of eCos, the Embedded Configurable Operating System.   

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.

//

// eCos 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 2 or (at your option) any later      

// version.                                                                 

//

// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,    

// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            

//

// As a special exception, if other files instantiate templates or use      

// macros or inline functions from this file, or you compile this file      

// and link it with other works to produce a work based on this file,       

// this file does not by itself cause the resulting work to be covered by   

// the GNU General Public License. However the source code for this file    

// must still be made available in accordance with section (3) of the GNU   

// General Public License v2.                                               

//

// This exception does not invalidate any other reasons why a work based    

// on this file might be covered by the GNU General Public License.         

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

// ####ECOSGPLCOPYRIGHTEND####                                              

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    gthomas

// Contributors: gthomas

// Date:         2002-08-06

// Purpose:      

// Description:  

//              

// This code is part of RedBoot (tm).

//

//####DESCRIPTIONEND####

//

//==========================================================================

#include <redboot.h>

RedBoot_cmd("mcmp",

            "Compare two blocks of memory",

            "-s <location> -d <location> -l <length> [-1|-2|-4]",

            do_mcmp

    );

void

do_mcmp(int argc, char *argv[])

{

    // Fill a region of memory with a pattern

    struct option_info opts[6];

    unsigned long src_base, dst_base;

    long len;

    bool src_base_set, dst_base_set, len_set;

    bool set_32bit, set_16bit, set_8bit;

    init_opts(&opts[0], 's', true, OPTION_ARG_TYPE_NUM,

              (void *)&src_base, (bool *)&src_base_set, "base address");

    init_opts(&opts[1], 'l', true, OPTION_ARG_TYPE_NUM,

              (void *)&len, (bool *)&len_set, "length");

    init_opts(&opts[2], 'd', true, OPTION_ARG_TYPE_NUM,

              (void *)&dst_base, (bool *)&dst_base_set, "base address");

    init_opts(&opts[3], '4', false, OPTION_ARG_TYPE_FLG,

              (void *)&set_32bit, (bool *)0, "fill 32 bit units");

    init_opts(&opts[4], '2', false, OPTION_ARG_TYPE_FLG,

              (void *)&set_16bit, (bool *)0, "fill 16 bit units");

    init_opts(&opts[5], '1', false, OPTION_ARG_TYPE_FLG,

              (void *)&set_8bit, (bool *)0, "fill 8 bit units");

    if (!scan_opts(argc, argv, 1, opts, 6, 0, 0, "")) {

        return;

    }

    if (!src_base_set || !dst_base_set || !len_set) {

        diag_printf("usage: mcmp -s <addr> -d <addr> -l <length> [-1|-2|-4]\n");

        return;

    }

    if (set_8bit) {

        cyg_uint8 *s = (cyg_uint8 *)src_base;

        cyg_uint8 *d = (cyg_uint8 *)dst_base;

        while ((len -= sizeof(cyg_uint8)) >= 0) {

            if (*s++ != *d++) {

                s--;

                d--;

                diag_printf("Buffers don't match - %p=0x%02x, %p=0x%02x\n",

                            s, *s, d, *d);

                return;

            }

        }

    } else if (set_16bit) {

        cyg_uint16 *s = (cyg_uint16 *)src_base;

        cyg_uint16 *d = (cyg_uint16 *)dst_base;

        while ((len -= sizeof(cyg_uint16)) >= 0) {

            if (*s++ != *d++) {

                s--;

                d--;

                diag_printf("Buffers don't match - %p=0x%04x, %p=0x%04x\n",

                            s, *s, d, *d);

                return;

            }

        }

    } else {

      cyg_uint32 *s = (cyg_uint32 *)src_base;

      cyg_uint32 *d = (cyg_uint32 *)dst_base;

      while ((len -= sizeof(cyg_uint32)) >= 0) {

        if (*s++ != *d++) {

          s--;

          d--;

          diag_printf("Buffers don't match - %p=0x%08x, %p=0x%08x\n",

                      s, *s, d, *d);

          return;

        }

      }

    }

}