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#!/usr/bin/perl
## -----------------------------------------------------------------------
##
## Copyright 2001-2008 H. Peter Anvin - All Rights Reserved
##
## This program 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, Inc., 53 Temple Place Ste 330,
## Boston MA 02111-1307, USA; either version 2 of the License, or
## (at your option) any later version; incorporated herein by reference.
##
## -----------------------------------------------------------------------
#
# Postprocess the memdisk binary. Used during the 'make' process.
# We write memdisk16.bin out to the final memdisk kernel, pad it to an
# integral 512-byte sector length, write this number of sectors into the
# kernel header field "setup_sects", then append memdisk32.bin
eval { use bytes; };
($out,$file16,$file32) = @ARGV;
open(OUT, "> $out\0") or die "$0: Cannot create file: $out\n";
eval { binmode OUT; };
open(FILE, "< $file16\0") or die "$0: Cannot open file: $file16\n";
eval { binmode FILE };
@info = stat(FILE);
$size = $info[7];
$sectors = ($size + 511) >> 9;
$xsize = $sectors << 9;
read(FILE, $f16, $size);
print OUT $f16;
if ( $size != $xsize ) {
# Pad to a sector boundary
print OUT "\0" x ($xsize-$size);
}
seek(OUT, 0x1f1, SEEK_SET); # setup_sects
# All sectors are setup except the first
print OUT pack("C", $sectors-1);
seek(OUT, $xsize, SEEK_SET);
close(FILE);
open(FILE, "+< $file32\0") or die "$0: Cannot open file: $file32\n";
while ( ($n = read(FILE, $f32, 65536)) > 0 ) {
print OUT $f32;
}
close(FILE);
close(OUT);
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