VServer 1.9.2 (patch-2.6.8.1-vs1.9.2.diff)

[linux-2.6.git] / scripts / checkstack.pl

diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
index df85c66..7d33f0a 100644 (file)
--- a/scripts/checkstack.pl
+++ b/scripts/checkstack.pl
@@ -10,9 +10,10 @@
 #      IA64 port via Andreas Dilger
 #      Arm port by Holger Schurig
 #      Random bits by Matt Mackall <mpm@selenic.com>
+#      M68k port by Geert Uytterhoeven and Andreas Schwab
 #
 #      Usage:
-#      objdump -d vmlinux | stackcheck_ppc.pl [arch]
+#      objdump -d vmlinux | stackcheck.pl [arch]
 #
 #      TODO :  Port to all architectures (one regex per arch)
 
@@ -23,6 +24,7 @@
 # $1 (first bracket) matches the size of the stack growth
 #
 # use anything else and feel the pain ;)
+my (@stack, $re, $x, $xs);
 {
        my $arch = shift;
        if ($arch eq "") {
@@ -31,25 +33,29 @@
 
        $x      = "[0-9a-f]";   # hex character
        $xs     = "[0-9a-f ]";  # hex character or space
-       if ($arch =~ /^arm$/) {
+       if ($arch eq 'arm') {
                #c0008ffc:      e24dd064        sub     sp, sp, #100    ; 0x64
                $re = qr/.*sub.*sp, sp, #(([0-9]{2}|[3-9])[0-9]{2})/o;
        } elsif ($arch =~ /^i[3456]86$/) {
                #c0105234:       81 ec ac 05 00 00       sub    $0x5ac,%esp
                $re = qr/^.*[as][du][db]    \$(0x$x{1,8}),\%esp$/o;
-       } elsif ($arch =~ /^ia64$/) {
+       } elsif ($arch eq 'ia64') {
                #e0000000044011fc:       01 0f fc 8c     adds r12=-384,r12
                $re = qr/.*adds.*r12=-(([0-9]{2}|[3-9])[0-9]{2}),r12/o;
-       } elsif ($arch =~ /^mips64$/) {
+       } elsif ($arch eq 'm68k') {
+               #    2b6c:       4e56 fb70       linkw %fp,#-1168
+               #  1df770:       defc ffe4       addaw #-28,%sp
+               $re = qr/.*(?:linkw %fp,|addaw )#-([0-9]{1,4})(?:,%sp)?$/o;
+       } elsif ($arch eq 'mips64') {
                #8800402c:       67bdfff0        daddiu  sp,sp,-16
                $re = qr/.*daddiu.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o;
-       } elsif ($arch =~ /^mips$/) {
+       } elsif ($arch eq 'mips') {
                #88003254:       27bdffe0        addiu   sp,sp,-32
                $re = qr/.*addiu.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o;
-       } elsif ($arch =~ /^ppc$/) {
+       } elsif ($arch eq 'ppc') {
                #c00029f4:       94 21 ff 30     stwu    r1,-208(r1)
                $re = qr/.*stwu.*r1,-($x{1,8})\(r1\)/o;
-       } elsif ($arch =~ /^ppc64$/) {
+       } elsif ($arch eq 'ppc64') {
                #XXX
                $re = qr/.*stdu.*r1,-($x{1,8})\(r1\)/o;
        } elsif ($arch =~ /^s390x?$/) {
@@ -62,6 +68,7 @@
 }
 
 sub bysize($) {
+       my ($asize, $bsize);
        ($asize = $a) =~ s/.*   +(.*)$/$1/;
        ($bsize = $b) =~ s/.*   +(.*)$/$1/;
        $bsize <=> $asize
@@ -70,8 +77,9 @@ sub bysize($) {
 #
 # main()
 #
-$funcre = qr/^$x* \<(.*)\>:$/;
-while ($line = <STDIN>) {
+my $funcre = qr/^$x* <(.*)>:$/;
+my $func;
+while (my $line = <STDIN>) {
        if ($line =~ m/$funcre/) {
                $func = $1;
        }
@@ -85,7 +93,7 @@ while ($line = <STDIN>) {
                        $size += 0x80000000;
                }
 
-               $line =~ m/^($xs*).*/;
+               next if $line !~ m/^($xs*)/;
                my $addr = $1;
                $addr =~ s/ /0/g;
                $addr = "0x$addr";
@@ -97,12 +105,8 @@ while ($line = <STDIN>) {
                        $padlen -= 8;
                }
                next if ($size < 100);
-               $stack[@stack] = "$intro$size\n";
+               push @stack, "$intro$size\n";
        }
 }
 
-@sortedstack = sort bysize @stack;
-
-foreach $i (@sortedstack) {
-       print("$i");
-}
+print sort bysize @stack;