freebsd-dev/sys/dev/ncr/locate.pl
2014-09-23 05:37:17 +00:00

46 lines
799 B
Perl
Executable File

#!/usr/bin/perl -w
# $FreeBSD$
use strict;
if (!defined($ARGV[0])) {
print(
"
Perl script to convert NCR script address into label+offset.
Useful to find the failed NCR instruction ...
usage: $0 <address>
");
exit(1);
}
my $errpos = hex($ARGV[0])/4;
my $ofs=0;
open (INPUT, "cc -E ncr.c 2>/dev/null |");
while ($_ = <INPUT>)
{
last if /^struct script \{/;
}
while ($_ = <INPUT>)
{
last if /^\}\;/;
my ($label, $size) = /ncrcmd\s+(\S+)\s+\[([^]]+)/;
$size = eval($size);
if (defined($label) && $label) {
if ($errpos) {
if ($ofs + $size > $errpos) {
printf ("%4x: %s\n", $ofs * 4, $label);
printf ("%4x: %s + %d\n", $errpos * 4, $label, $errpos - $ofs);
last;
}
$ofs += $size;
} else {
printf ("%4x: %s\n", $ofs * 4, $label);
}
}
}