imgtools/romtools/rofsbuild/dumpdirs.pl
author Ross Qin <ross.qin@nokia.com>
Tue, 02 Nov 2010 09:31:04 +0800 (2010-11-02)
changeset 671 ff8ff850b0cf
parent 0 044383f39525
permissions -rw-r--r--
fix the Serious problem with ROFS on-disk format
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
0
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#
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# Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
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# All rights reserved.
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# This component and the accompanying materials are made available
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# under the terms of the License "Eclipse Public License v1.0"
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# which accompanies this distribution, and is available
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# at the URL "http://www.eclipse.org/legal/epl-v10.html".
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#
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# Initial Contributors:
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# Nokia Corporation - initial contribution.
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#
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# Contributors:
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#
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# Description: 
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# Perl script to dump the ROM root directory
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#
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my $imagefile="ba_001.engbuild.img";
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my $imageoffset=0;
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my $readsortedarrays = 1;
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my $imagetype="none";
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sub usage_and_die
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{
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die "Usage: $0 [-no-sorted-arrays] [imagefile]\n";
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}
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usage_and_die() if (@ARGV>2);
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foreach(@ARGV)
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	{
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	if (uc($_) eq '-NO-SORTED-ARRAYS')
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		{
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		$readsortedarrays = 0;
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		}
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	else
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		{
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		$imagefile = $_;
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		}
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	}
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#
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#
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#
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open IMAGE, "<$imagefile" or die "Cannot open $imagefile";
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binmode IMAGE;
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my $imagedata;
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my $errors=0;
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my $romrootdirectory;
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read IMAGE, $imagedata, 20;
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if ($imagedata =~ /^EPOC....ROM/)
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	{
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	$imageoffset -= 256;	# compensate for REPRO header
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	}
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else
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	{
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	# No REPRO header, rewind back to the start
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	seek(IMAGE,0, 0)
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	}
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#
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# identify the image type
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#
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my $coresize=0;
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my $id=readword(0);
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if ($id == 0x53464f52)	# ROFS
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	{
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	$coresize=readword(0x2c);	
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	printf "Core ROFS ROM image: %s\n", $imagefile;
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	$imagetype="ROFS";
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	$romrootdirectory = readword(8);
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	}
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elsif ($id == 0x78464f52) # ROFx
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	{
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	printf "Extension ROFS ROM image: %s\n", $imagefile;
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	$imagetype="ROFx";
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	exit (1);
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	}
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else
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    {
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    printf "Unknown ROM image type: %s\n", $imagefile;
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	exit (1);
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    }
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#
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#
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#
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my @directories;
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push @directories, $romrootdirectory;
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if (seek(IMAGE, $coresize+8, 0))
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	{
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	my $extdir=0;
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	$extdir=readword($coresize+8);
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	if ($extdir) {
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		push @directories, $extdir;
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		printf "Extended ROFS @ %08x\n", $coresize;
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		}
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	}
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my $root;
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foreach $root (@directories)
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    {
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    printf "\n\nDirectory @ 0x%08x:\n", $root;
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    print_directory($root, "");
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    }
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my %seen_before;
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sub print_sortedarrays
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{
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	return if (!$readsortedarrays);
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	my $entry = shift ;
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	my $prefix = shift;
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	my $sortedarrayptr=$entry+4;
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	my $dircount=readshort($entry);
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	my $filecount=readshort($entry+2);
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	printf "%s dirs[%d]=[",$prefix, $dircount;
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	while ($dircount--)
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		{
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		printf "%04x",readshort($sortedarrayptr);
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		printf "," if $dircount;
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		$sortedarrayptr+=2;
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		}
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	print "]\n";
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	printf "%s files[%d]=[",$prefix,$filecount;
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	while ($filecount--)
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		{
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		printf "%04x",readshort($sortedarrayptr);
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		printf ","  if $filecount;
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		$sortedarrayptr+=2;
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		}
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	print "]\n";
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}
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sub print_entry
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	{
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 	my ($entry, $prefix) = @_;
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	my $size = readshort($entry);
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	my $nameoffset = readbyte(-1);
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	my $attributes = readbyte(-1);
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	my $filesize = readword(-1);
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	my $fileoffset = readword(-1); # fileaddr
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	my $attributesextra = readbyte(-1);
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	my $namelen = readbyte(-1);
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	my $name = readimage($namelen*2, -1);
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	$name =~ s/(.)./$1/g;	# drop high byte of Unicode characters
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	printf "%s %s\t%08x %02x %3d %08x\n", $prefix,$name, $entry, 
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				$attributes, $filesize, $fileoffset;
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	}
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sub print_directory
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    {
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    my ($dir, $prefix) = @_;
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    if ($seen_before{$dir} == 1)
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		{
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		printf "%s ...\n", $prefix;
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		return;
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		}
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    $seen_before{$dir} = 1;
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	my $dirstructsize=readshort($dir);
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	my $firstentryoffset=readbyte($dir+3);
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	my $entry = $dir+$firstentryoffset;
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	my $end = $dir+$dirstructsize;
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	# print the files in this dir
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	#
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	my $fileblockoffset = readword($dir+4);
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	my $fileblocksize	= readword($dir+8);
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	while ($fileblocksize>0)
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		{
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		my $fileentrysize=readshort($fileblockoffset);
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		print_entry($fileblockoffset, "$prefix");
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		$fileblocksize-=$fileentrysize;
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		$fileblockoffset+=$fileentrysize;
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		}
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	# print the sub dirs
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	my $firstentry = $entry;
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    while ($entry < $end)
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		{
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		my $size = readshort($entry);
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		my $nameoffset = readbyte(-1);
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		my $attributes = readbyte(-1);
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		my $filesize = readword(-1);
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		my $fileoffset = readword(-1); # fileaddr
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		my $attributesextra = readbyte(-1);
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		my $namelen = readbyte(-1);
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		my $name = readimage($namelen*2, -1);
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		$name =~ s/(.)./$1/g;	# drop high byte of Unicode characters
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		printf "%s %s\\\t%08x \n", $prefix, $name, $entry;
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		print_directory($fileoffset, "$prefix |");
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		$entry += $size;
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		$entry = ($entry+3)&~3;
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		}
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    }
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#
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# read image subroutines
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#
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sub readimage
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    {
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    my ($length, $linaddr) = @_;
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    my $imagedata;
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	if ($linaddr>=0)
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		{
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		if (!seek(IMAGE, $linaddr-$imageoffset, 0))
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	    	{
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		   	 printf "Can't seek to address 0x%x\n", $linaddr;
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	    	$errors++;
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	    	return "";
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	    	}
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		}
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    read IMAGE, $imagedata, $length;
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    return $imagedata;
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    }
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sub readbyte
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	{
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	my ($linaddr) = @_;
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    return unpack "C", readimage(1, $linaddr);
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    }
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sub readword
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    {
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    my ($linaddr) = @_;
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    return unpack "V", readimage(4, $linaddr);
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    }
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sub readshort
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	{
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	my ($linaddr) = @_;
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	return unpack "v", readimage(2, $linaddr); # unsigned short in little-endian
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	}