80 lines
2.7 KiB
Plaintext
80 lines
2.7 KiB
Plaintext
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#! /usr/bin/perl
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#
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# Copyright (c) 2004-2006 Motoyuki Kasahara
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the project nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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#
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# Parse command line arguments.
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#
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die "usage: $0 file page[:offset]\n" if (@ARGV != 2);
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$file = $ARGV[0];
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if ($ARGV[1] =~ /^([0-9a-fA-F]+)$/) {
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$offset = (hex($1) - 1) * 2048;
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} elsif ($ARGV[1] =~ /^([0-9a-fA-F]+):([0-9a-fA-F]+)$/) {
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$offset = (hex($1) - 1) * 2048 + hex($2);
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} else {
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die "$0: invalid offset\n";
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}
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die "$0: invalid offset\n" if ($offset < 0);
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#
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# Open a file.
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#
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open(FILE, $file) || die "$0: failed to open the file, $!: $file.\n";
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seek(FILE, $offset, 0) || die "$0: failed to seek the file, $!: $file.\n";
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#
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# Read the file.
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#
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$count = 0;
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while ($count < 2048) {
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last if (read(FILE, $buf, 16) != 16);
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@data = unpack("C16", $buf);
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printf '%04x:%03x ', $offset / 2048 + 1, $offset % 2048;
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for ($i = $0; $i < 16; $i += 2) {
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printf('%02x%02x', $data[$i], $data[$i + 1]);
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}
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print ' ';
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for ($i = $0; $i < 16; $i += 2) {
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if (0x21 <= $data[$i] && $data[$i] <= 0x7e
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&& 0x21 <= $data[$i + 1] && $data[$i + 1] <= 0x7e) {
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printf('[%c%c]', $data[$i] | 0x80, $data[$i + 1] | 0x80);
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} else {
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printf('%02x%02x', $data[$i], $data[$i + 1]);
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}
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}
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print "\n";
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$offset += 16;
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$count += 16;
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}
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#
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# Close the file.
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#
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close(FILE);
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