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SubjectRe: [PATCH] add checkstack Makefile target
Date
Jörn Engel wrote:

> Yet another version:
> - Arch dependent code is reduced to one regular expression.
> - Much shorter.
> - A tiny bit faster.
>
> Still, Keith' code beats the crap out of mine, speed-wise.

Ok, here is another regex for s390, including a changed $line
calculation. I didn't have ksymoops around, but this change
removes the need for it and should also speed things up.

Arnd <><

--- checkstack.pl 2003-03-06 02:28:13.000000000 +0100
+++ scripts/checkstack.pl 2003-03-06 02:25:23.000000000 +0100
@@ -31,6 +31,9 @@
} elsif ($arch =~ /^ppc$/) {
#c00029f4: 94 21 ff 30 stwu r1,-208(r1)
$re = qr/.*(stwu.*r1,-($x{3,5})\(r1\))/o;
+ } elsif ($arch =~ /^s390x?$/) {
+ # 11160: a7 fb ff 60 aghi %r15,-160
+ $re = qr/.*(ag?hi.*\%r15,-(([0-9]{2}|[3-9])[0-9]{2}))/o;
} else {
print "wrong or unknown architecture\n";
exit
@@ -46,16 +49,17 @@
#
# main()
#
+$funcre = qr/^$x* \<(.*)\>:$/;
while (defined($line = <STDIN>)) {
+ if ($line =~ m/$funcre/) {
+ ($func = $line) =~ s/$funcre/\1/;
+ chomp($func);
+ }
+
if ($line =~ m/$re/) {
- (my $addr = $line) =~ s/^($x{8}).*/0x\1/o;
+ (my $addr = $line) =~ s/^([ 0-9a-z]{8}):.*/0x\1/o;
chomp($addr);

- my $ksymoops = `ksymoops -v vmlinux -m System.map -K -L -O -A $addr | \
- tail -2 | head -1`;
- (my $func = $ksymoops) =~ s/^Adhoc [0-9a-f]{8} (<.*>)/\1/;
- chomp($func);
-
my $intro = "$addr $func:";
my $padlen = 56 - length($intro);
while ($padlen > 0) {
-
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