source: SVN/cambria/redboot/packages/redboot/current/src/mcmp.c @ 1

Last change on this file since 1 was 1, checked in by Tim Harvey, 2 years ago

restored latest version of files from server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 5.2 KB
Line 
1//==========================================================================
2//
3//      mcmp.c
4//
5//      RedBoot memory compare (mcmp) routine
6//
7//==========================================================================
8//####ECOSGPLCOPYRIGHTBEGIN####
9// -------------------------------------------
10// This file is part of eCos, the Embedded Configurable Operating System.
11// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
12// Copyright (C) 2002 Gary Thomas
13//
14// eCos is free software; you can redistribute it and/or modify it under
15// the terms of the GNU General Public License as published by the Free
16// Software Foundation; either version 2 or (at your option) any later version.
17//
18// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
19// WARRANTY; without even the implied warranty of MERCHANTABILITY or
20// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
21// for more details.
22//
23// You should have received a copy of the GNU General Public License along
24// with eCos; if not, write to the Free Software Foundation, Inc.,
25// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26//
27// As a special exception, if other files instantiate templates or use macros
28// or inline functions from this file, or you compile this file and link it
29// with other works to produce a work based on this file, this file does not
30// by itself cause the resulting work to be covered by the GNU General Public
31// License. However the source code for this file must still be made available
32// in accordance with section (3) of the GNU General Public License.
33//
34// This exception does not invalidate any other reasons why a work based on
35// this file might be covered by the GNU General Public License.
36//
37// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
38// at http://sources.redhat.com/ecos/ecos-license/
39// -------------------------------------------
40//####ECOSGPLCOPYRIGHTEND####
41//==========================================================================
42//#####DESCRIPTIONBEGIN####
43//
44// Author(s):    gthomas
45// Contributors: gthomas
46// Date:         2002-08-06
47// Purpose:     
48// Description: 
49//             
50// This code is part of RedBoot (tm).
51//
52//####DESCRIPTIONEND####
53//
54//==========================================================================
55
56#include <redboot.h>
57
58RedBoot_cmd("mcmp", 
59            "Compare two blocks of memory",
60            "-s <location> -d <location> -l <length> [-1|-2|-4]",
61            do_mcmp
62    );
63
64void
65do_mcmp(int argc, char *argv[])
66{
67    // Fill a region of memory with a pattern
68    struct option_info opts[6];
69    unsigned long src_base, dst_base;
70    long len;
71    bool src_base_set, dst_base_set, len_set;
72    bool set_32bit, set_16bit, set_8bit;
73
74    init_opts(&opts[0], 's', true, OPTION_ARG_TYPE_NUM, 
75              (void *)&src_base, (bool *)&src_base_set, "base address");
76    init_opts(&opts[1], 'l', true, OPTION_ARG_TYPE_NUM, 
77              (void *)&len, (bool *)&len_set, "length");
78    init_opts(&opts[2], 'd', true, OPTION_ARG_TYPE_NUM, 
79              (void *)&dst_base, (bool *)&dst_base_set, "base address");
80    init_opts(&opts[3], '4', false, OPTION_ARG_TYPE_FLG,
81              (void *)&set_32bit, (bool *)0, "fill 32 bit units");
82    init_opts(&opts[4], '2', false, OPTION_ARG_TYPE_FLG,
83              (void *)&set_16bit, (bool *)0, "fill 16 bit units");
84    init_opts(&opts[5], '1', false, OPTION_ARG_TYPE_FLG,
85              (void *)&set_8bit, (bool *)0, "fill 8 bit units");
86    if (!scan_opts(argc, argv, 1, opts, 6, 0, 0, "")) {
87        return;
88    }
89    if (!src_base_set || !dst_base_set || !len_set) {
90        diag_printf("usage: mcmp -s <addr> -d <addr> -l <length> [-1|-2|-4]\n");
91        return;
92    }
93    // No checks here   
94    if (set_8bit) {
95        // Compare 8 bits at a time
96        while ((len -= sizeof(cyg_uint8)) >= 0) {
97            if (*((cyg_uint8 *)src_base)++ != *((cyg_uint8 *)dst_base)++) {
98                ((cyg_uint8 *)src_base)--;
99                ((cyg_uint8 *)dst_base)--;
100                diag_printf("Buffers don't match - %p=0x%02x, %p=0x%02x\n",
101                            src_base, *((cyg_uint8 *)src_base),
102                            dst_base, *((cyg_uint8 *)dst_base));
103                return;
104            }
105        }
106    } else if (set_16bit) {
107        // Compare 16 bits at a time
108        while ((len -= sizeof(cyg_uint16)) >= 0) {
109            if (*((cyg_uint16 *)src_base)++ != *((cyg_uint16 *)dst_base)++) {
110                ((cyg_uint16 *)src_base)--;
111                ((cyg_uint16 *)dst_base)--;
112                diag_printf("Buffers don't match - %p=0x%04x, %p=0x%04x\n",
113                            src_base, *((cyg_uint16 *)src_base),
114                            dst_base, *((cyg_uint16 *)dst_base));
115                return;
116            }
117        }
118    } else {
119        // Default - 32 bits
120        while ((len -= sizeof(cyg_uint32)) >= 0) {
121            if (*((cyg_uint32 *)src_base)++ != *((cyg_uint32 *)dst_base)++) {
122                ((cyg_uint32 *)src_base)--;
123                ((cyg_uint32 *)dst_base)--;
124                diag_printf("Buffers don't match - %p=0x%08x, %p=0x%08x\n",
125                            src_base, *((cyg_uint32 *)src_base),
126                            dst_base, *((cyg_uint32 *)dst_base));
127                return;
128            }
129        }
130    }
131}
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