summaryrefslogtreecommitdiff
path: root/cesar/ecos/packages/redboot/current/src/mcopy.c
blob: d343f12d849f1c3ac1ba6114ac2163a73c6e84ae (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
//==========================================================================
//
//      mcopy.c
//
//      RedBoot memory copy (mcopy) routine
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Red Hat, 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.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 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.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    msalter
// Contributors: msalter
// Date:         2003-07-01
// Purpose:      
// Description:  
//              
// This code is part of RedBoot (tm).
//
//####DESCRIPTIONEND####
//
//==========================================================================

#include <redboot.h>

static void
do_mcopy(int argc, char *argv[])
{
    struct option_info opts[6];
    unsigned long src, dst, len, end;
    bool src_set, dst_set, len_set;
    bool sz32, sz16, sz8;
    int incr = 1;

    init_opts(&opts[0], 's', true, OPTION_ARG_TYPE_NUM, 
              (void *)&src, (bool *)&src_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, (bool *)&dst_set, "base address");
    init_opts(&opts[3], '4', false, OPTION_ARG_TYPE_FLG,
              (void *)&sz32, (bool *)0, "copy 32 bit data");
    init_opts(&opts[4], '2', false, OPTION_ARG_TYPE_FLG,
              (void *)&sz16, (bool *)0, "copy 16 bit data");
    init_opts(&opts[5], '1', false, OPTION_ARG_TYPE_FLG,
              (void *)&sz8, (bool *)0, "copy 8 bit data");
    if (!scan_opts(argc, argv, 1, opts, 6, 0, 0, "")) {
        return;
    }

    // Must have src, dst, len. No more than one size specifier.
    if (!src_set || !dst_set || !len_set || (sz32 + sz16 + sz8) > 1) {
        diag_printf("usage: mcopy -s <addr> -d <addr> -l <length> [-1|-2|-4]\n");
        return;
    }

    // adjust incr and len for data size
    if (sz16) {
	len = (len + 1) & ~1;
	incr = 2;
    } else if (sz32 || !sz8) {
	len = (len + 3) & ~3;
	incr = 4;
    }

    end = src + len;

    // If overlapping areas, must copy backwards.
    if (dst > src && dst < (src + len)) {
	end = src - incr;
	src += (len - incr);
	dst += (len - incr);
	incr = -incr;
    }

    if (sz8) {
	while (src != end) {
	    *(cyg_uint8 *)dst = *(cyg_uint8 *)src;
	    src += incr;
	    dst += incr;
	}
    } else if (sz16) {
	while (src != end) {
	    *(cyg_uint16 *)dst = *(cyg_uint16 *)src;
	    src += incr;
	    dst += incr;
	}
    } else {
        // Default - 32 bits
	while (src != end) {
	    *(cyg_uint32 *)dst = *(cyg_uint32 *)src;
	    src += incr;
	    dst += incr;
	}
    }
}


RedBoot_cmd("mcopy", 
            "Copy memory from one address to another",
            "-s <location> -d <location> -l <length> [-1|-2|-4]",
            do_mcopy
    );