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-#!/usr/bin/perl -w
-# vi: set ts=4:
-# Copyright (c) 2001 David Schleef <ds@schleef.org>
-# Copyright (c) 2001 Erik Andersen <andersen@codepoet.org>
-# Copyright (c) 2001 Stuart Hughes <stuarth@lineo.com>
-# Copyright (c) 2002 Steven J. Hill <shill@broadcom.com>
-# This program is free software; you can redistribute it and/or modify it
-# under the same terms as Perl itself.
-
-# TODO -- use strict mode...
-#use strict;
-
-use Getopt::Long;
-use File::Find;
-
-
-# Set up some default values
-
-my $basedir="";
-my $kernel;
-my $kernelsyms;
-my $stdout=0;
-my $verbose=0;
-
-
-# get command-line options
-
-my %opt;
-
-GetOptions(
- \%opt,
- "help|h",
- "basedir|b=s" => \$basedir,
- "kernel|k=s" => \$kernel,
- "kernelsyms|F=s" => \$kernelsyms,
- "stdout|n" => \$stdout,
- "verbose|v" => \$verbose,
-);
-
-if (defined $opt{help}) {
- print
- " $0 [OPTION]... [basedir]\n",
- " -h --help\t\tShow this help screen\n",
- " -b --basedir\tModules base directory (defaults to /lib/modules)\n",
- " -k --kernel\tKernel binary for the target\n",
- " -F --kernelsyms\tKernel symbol file\n",
- " -n --stdout\tWrite to stdout instead of <basedir>/modules.dep\n",
- " -v --verbose\tPrint out lots of debugging stuff\n",
- ;
- exit 1;
-}
-
-if($basedir !~ m-/lib/modules-) {
- warn "WARNING: base directory does not match ..../lib/modules\n";
-}
-
-# Find the list of .o files living under $basedir
-#if ($verbose) { printf "Locating all modules\n"; }
-my($ofile) = "";
-my($file) = "";
-my(@liblist) = ();
-find sub {
- if ( -f $_ && ! -d $_ ) {
- $file = $File::Find::name;
- if ( $file =~ /.o$/ ) {
- push(@liblist, $file);
- if ($verbose) { printf "$file\n"; }
- }
- }
-}, $basedir;
-if ($verbose) { printf "Finished locating modules\n"; }
-
-foreach $obj ( @liblist, $kernel ){
- # turn the input file name into a target tag name
- # vmlinux is a special that is only used to resolve symbols
- if($obj =~ /vmlinux/) {
- $tgtname = "vmlinux";
- } else {
- ($tgtname) = $obj =~ m-(/lib/modules/.*)$-;
- }
-
- warn "MODULE = $tgtname\n" if $verbose;
-
- # get a list of symbols
- @output=`nm $obj`;
- $ksymtab=grep m/ __ksymtab/, @output;
-
- # gather the exported symbols
- if($ksymtab){
- # explicitly exported
- foreach ( @output ) {
- / __ksymtab_(.*)$/ and do {
- warn "sym = $1\n" if $verbose;
- $exp->{$1} = $tgtname;
- };
- }
- } else {
- # exporting all symbols
- foreach ( @output) {
- / [ABCDGRST] (.*)$/ and do {
- warn "syma = $1\n" if $verbose;
- $exp->{$1} = $tgtname;
- };
- }
- }
- # gather the unresolved symbols
- foreach ( @output ) {
- !/ __this_module/ && / U (.*)$/ and do {
- warn "und = $1\n" if $verbose;
- push @{$dep->{$tgtname}}, $1;
- };
- }
-}
-
-
-# reduce dependancies: remove unresolvable and resolved from vmlinux
-# remove duplicates
-foreach $module (keys %$dep) {
- $mod->{$module} = {};
- foreach (@{$dep->{$module}}) {
- if( $exp->{$_} ) {
- warn "resolved symbol $_ in file $exp->{$_}\n" if $verbose;
- next if $exp->{$_} =~ /vmlinux/;
- $mod->{$module}{$exp->{$_}} = 1;
- } else {
- warn "unresolved symbol $_ in file $module\n";
- }
- }
-}
-
-# resolve the dependancies for each module
-if ($stdout == 1) {
- foreach $module ( keys %$mod ) {
- print "$module:\t";
- @sorted = sort bydep keys %{$mod->{$module}};
- print join(" \\\n\t",@sorted);
- print "\n\n";
- }
-} else {
- open(OFILE, ">$basedir/modules.dep");
- foreach $module ( keys %$mod ) {
- print OFILE "$module:\t";
- @sorted = sort bydep keys %{$mod->{$module}};
- print OFILE join(" \\\n\t",@sorted);
- print OFILE "\n\n";
- }
-}
-
-
-sub bydep
-{
- foreach my $f ( keys %{$mod->{$b}} ) {
- if($f eq $a) {
- return 1;
- }
- }
- return -1;
-}
-
-
-
-__END__
-
-=head1 NAME
-
-depmod.pl - a cross platform script to generate kernel module dependency
- lists which can then be used by modprobe.
-
-=head1 SYNOPSIS
-
-depmod.pl [OPTION]... [basedir]...
-
-Example:
-
- depmod.pl -F linux/System.map target/lib/modules
-
-=head1 DESCRIPTION
-
-The purpose of this script is to automagically generate a list of of kernel
-module dependancies. This script produces dependancy lists that should be
-identical to the depmod program from the modutils package. Unlike the depmod
-binary, however, depmod.pl is designed to be run on your host system, not
-on your target system.
-
-This script was written by David Schleef <ds@schleef.org> to be used in
-conjunction with the BusyBox modprobe applet.
-
-=head1 OPTIONS
-
-=over 4
-
-=item B<-h --help>
-
-This displays the help message.
-
-=item B<-b --basedir>
-
-The base directory uner which the target's modules will be found. This
-defaults to the /lib/modules directory.
-
-=item B<-k --kernel>
-
-Kernel binary for the target. You must either supply a kernel binary
-or a kernel symbol file (using the -F option).
-
-=item B<-F --kernelsyms>
-
-Kernel symbol file for the target. You must supply either a kernel symbol file
-kernel binary for the target (using the -k option).
-
-=item B<-n --stdout>
-
-Write to stdout instead of modules.dep. This is currently hard coded...
-kernel binary for the target (using the -k option).
-
-=item B<--verbose>
-
-Be verbose (not implemented)
-
-=back
-
-=head1 COPYRIGHT
-
-Copyright (c) 2001 David Schleef <ds@schleef.org>
-Copyright (c) 2001 Erik Andersen <andersen@codepoet.org>
-Copyright (c) 2001 Stuart Hughes <stuarth@lineo.com>
-This program is free software; you can redistribute it and/or modify it
-under the same terms as Perl itself.
-
-=head1 AUTHOR
-
-David Schleef <ds@schleef.org>
-
-=cut
-
-# $Id: depmod.pl,v 1.1 2004/12/08 01:34:41 andersen Exp $
-