ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/scripts/kconfig.pl b/scripts/kconfig.pl
new file mode 100755
index 0000000..392f1d5
--- /dev/null
+++ b/scripts/kconfig.pl
@@ -0,0 +1,189 @@
+#!/usr/bin/env perl
+#
+# Copyright (C) 2006 Felix Fietkau <nbd@nbd.name>
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+use warnings;
+use strict;
+
+my @arg;
+my $PREFIX = "CONFIG_";
+
+sub set_config($$$$) {
+ my $config = shift;
+ my $idx = shift;
+ my $newval = shift;
+ my $mod_plus = shift;
+
+ if (!defined($config->{$idx}) or !$mod_plus or
+ $config->{$idx} eq '#undef' or $newval eq 'y') {
+ $config->{$idx} = $newval;
+ }
+}
+
+sub load_config($$) {
+ my $file = shift;
+ my $mod_plus = shift;
+ my %config;
+
+ open FILE, "$file" or die "can't open file '$file'";
+ while (<FILE>) {
+ chomp;
+ /^$PREFIX(.+?)=(.+)/ and do {
+ set_config(\%config, $1, $2, $mod_plus);
+ next;
+ };
+ /^# $PREFIX(.+?) is not set/ and do {
+ set_config(\%config, $1, "#undef", $mod_plus);
+ next;
+ };
+ /^#/ and next;
+ /^(.+)$/ and warn "WARNING: can't parse line: $1\n";
+ }
+ return \%config;
+}
+
+
+sub config_and($$) {
+ my $cfg1 = shift;
+ my $cfg2 = shift;
+ my %config;
+
+ foreach my $config (keys %$cfg1) {
+ my $val1 = $cfg1->{$config};
+ my $val2 = $cfg2->{$config};
+ $val2 and ($val1 eq $val2) and do {
+ $config{$config} = $val1;
+ };
+ }
+ return \%config;
+}
+
+
+sub config_add($$$) {
+ my $cfg1 = shift;
+ my $cfg2 = shift;
+ my $mod_plus = shift;
+ my %config;
+
+ for ($cfg1, $cfg2) {
+ my %cfg = %$_;
+
+ foreach my $config (keys %cfg) {
+ if ($mod_plus and $config{$config}) {
+ next if $config{$config} eq "y";
+ next if $cfg{$config} eq '#undef';
+ }
+ $config{$config} = $cfg{$config};
+ }
+ }
+ return \%config;
+}
+
+sub config_diff($$$) {
+ my $cfg1 = shift;
+ my $cfg2 = shift;
+ my $new_only = shift;
+ my %config;
+
+ foreach my $config (keys %$cfg2) {
+ if (!defined($cfg1->{$config}) or $cfg1->{$config} ne $cfg2->{$config}) {
+ next if $new_only and !defined($cfg1->{$config}) and $cfg2->{$config} eq '#undef';
+ $config{$config} = $cfg2->{$config};
+ }
+ }
+ return \%config
+}
+
+sub config_sub($$) {
+ my $cfg1 = shift;
+ my $cfg2 = shift;
+ my %config = %{$cfg1};
+ my @keys = map {
+ my $expr = $_;
+ $expr =~ /[?.*]/ ?
+ map {
+ /^$expr$/ ? $_ : ()
+ } keys %config : $expr;
+ } keys %$cfg2;
+
+ foreach my $config (@keys) {
+ delete $config{$config};
+ }
+ return \%config;
+}
+
+sub print_cfgline($$) {
+ my $name = shift;
+ my $val = shift;
+ if ($val eq '#undef' or $val eq 'n') {
+ print "# $PREFIX$name is not set\n";
+ } else {
+ print "$PREFIX$name=$val\n";
+ }
+}
+
+
+sub dump_config($) {
+ my $cfg = shift;
+ die "argument error in dump_config" unless ($cfg);
+ my %config = %$cfg;
+ foreach my $config (sort keys %config) {
+ print_cfgline($config, $config{$config});
+ }
+}
+
+sub parse_expr {
+ my $pos = shift;
+ my $mod_plus = shift;
+ my $arg = $arg[$$pos++];
+
+ die "Parse error" if (!$arg);
+
+ if ($arg eq '&') {
+ my $arg1 = parse_expr($pos);
+ my $arg2 = parse_expr($pos);
+ return config_and($arg1, $arg2);
+ } elsif ($arg =~ /^\+/) {
+ my $arg1 = parse_expr($pos);
+ my $arg2 = parse_expr($pos);
+ return config_add($arg1, $arg2, 0);
+ } elsif ($arg =~ /^m\+/) {
+ my $arg1 = parse_expr($pos);
+ my $arg2 = parse_expr($pos, 1);
+ return config_add($arg1, $arg2, 1);
+ } elsif ($arg eq '>') {
+ my $arg1 = parse_expr($pos);
+ my $arg2 = parse_expr($pos);
+ return config_diff($arg1, $arg2, 0);
+ } elsif ($arg eq '>+') {
+ my $arg1 = parse_expr($pos);
+ my $arg2 = parse_expr($pos);
+ return config_diff($arg1, $arg2, 1);
+ } elsif ($arg eq '-') {
+ my $arg1 = parse_expr($pos);
+ my $arg2 = parse_expr($pos);
+ return config_sub($arg1, $arg2);
+ } else {
+ return load_config($arg, $mod_plus);
+ }
+}
+
+while (@ARGV > 0 and $ARGV[0] =~ /^-\w+$/) {
+ my $cmd = shift @ARGV;
+ if ($cmd =~ /^-n$/) {
+ $PREFIX = "";
+ } elsif ($cmd =~ /^-p$/) {
+ $PREFIX = shift @ARGV;
+ } else {
+ die "Invalid option: $cmd\n";
+ }
+}
+@arg = @ARGV;
+
+my $pos = 0;
+dump_config(parse_expr(\$pos));
+die "Parse error" if ($arg[$pos]);