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-rwxr-xr-xscripts/checkstack.pl87
1 files changed, 59 insertions, 28 deletions
diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
index 371bd17a4983..d2c38584ece6 100755
--- a/scripts/checkstack.pl
+++ b/scripts/checkstack.pl
@@ -34,8 +34,10 @@ use strict;
# $& (whole re) matches the complete objdump line with the stack growth
# $1 (first bracket) matches the dynamic amount of the stack growth
#
+# $sub: subroutine for special handling to check stack usage.
+#
# use anything else and feel the pain ;)
-my (@stack, $re, $dre, $x, $xs, $funcre);
+my (@stack, $re, $dre, $sub, $x, $xs, $funcre, $min_stack);
{
my $arch = shift;
if ($arch eq "") {
@@ -43,6 +45,11 @@ my (@stack, $re, $dre, $x, $xs, $funcre);
chomp($arch);
}
+ $min_stack = shift;
+ if ($min_stack eq "" || $min_stack !~ /^\d+$/) {
+ $min_stack = 100;
+ }
+
$x = "[0-9a-f]"; # hex character
$xs = "[0-9a-f ]"; # hex character or space
$funcre = qr/^$x* <(.*)>:$/;
@@ -53,7 +60,8 @@ my (@stack, $re, $dre, $x, $xs, $funcre);
$dre = qr/^.*sub.*sp, sp, #(0x$x{1,8})/o;
} elsif ($arch eq 'arm') {
#c0008ffc: e24dd064 sub sp, sp, #100 ; 0x64
- $re = qr/.*sub.*sp, sp, #(([0-9]{2}|[3-9])[0-9]{2})/o;
+ $re = qr/.*sub.*sp, sp, #([0-9]{1,4})/o;
+ $sub = \&arm_push_handling;
} elsif ($arch =~ /^x86(_64)?$/ || $arch =~ /^i[3456]86$/) {
#c0105234: 81 ec ac 05 00 00 sub $0x5ac,%esp
# or
@@ -107,13 +115,50 @@ my (@stack, $re, $dre, $x, $xs, $funcre);
}
#
+# To count stack usage of push {*, fp, ip, lr, pc} instruction in ARM,
+# if FRAME POINTER is enabled.
+# e.g. c01f0d48: e92ddff0 push {r4, r5, r6, r7, r8, r9, sl, fp, ip, lr, pc}
+#
+sub arm_push_handling {
+ my $regex = qr/.*push.*fp, ip, lr, pc}/o;
+ my $size = 0;
+ my $line_arg = shift;
+
+ if ($line_arg =~ m/$regex/) {
+ $size = $line_arg =~ tr/,//;
+ $size = ($size + 1) * 4;
+ }
+
+ return $size;
+}
+
+#
# main()
#
-my ($func, $file, $lastslash);
+my ($func, $file, $lastslash, $total_size, $addr, $intro);
+
+$total_size = 0;
while (my $line = <STDIN>) {
if ($line =~ m/$funcre/) {
$func = $1;
+ next if $line !~ m/^($xs*)/;
+ if ($total_size > $min_stack) {
+ push @stack, "$intro$total_size\n";
+ }
+
+ $addr = $1;
+ $addr =~ s/ /0/g;
+ $addr = "0x$addr";
+
+ $intro = "$addr $func [$file]:";
+ my $padlen = 56 - length($intro);
+ while ($padlen > 0) {
+ $intro .= ' ';
+ $padlen -= 8;
+ }
+
+ $total_size = 0;
}
elsif ($line =~ m/(.*):\s*file format/) {
$file = $1;
@@ -134,37 +179,23 @@ while (my $line = <STDIN>) {
}
next if ($size > 0x10000000);
- next if $line !~ m/^($xs*)/;
- my $addr = $1;
- $addr =~ s/ /0/g;
- $addr = "0x$addr";
-
- my $intro = "$addr $func [$file]:";
- my $padlen = 56 - length($intro);
- while ($padlen > 0) {
- $intro .= ' ';
- $padlen -= 8;
- }
- next if ($size < 100);
- push @stack, "$intro$size\n";
+ $total_size += $size;
}
elsif (defined $dre && $line =~ m/$dre/) {
- my $size = "Dynamic ($1)";
+ my $size = $1;
- next if $line !~ m/^($xs*)/;
- my $addr = $1;
- $addr =~ s/ /0/g;
- $addr = "0x$addr";
+ $size = hex($size) if ($size =~ /^0x/);
+ $total_size += $size;
+ }
+ elsif (defined $sub) {
+ my $size = &$sub($line);
- my $intro = "$addr $func [$file]:";
- my $padlen = 56 - length($intro);
- while ($padlen > 0) {
- $intro .= ' ';
- $padlen -= 8;
- }
- push @stack, "$intro$size\n";
+ $total_size += $size;
}
}
+if ($total_size > $min_stack) {
+ push @stack, "$intro$total_size\n";
+}
# Sort output by size (last field)
print sort { ($b =~ /:\t*(\d+)$/)[0] <=> ($a =~ /:\t*(\d+)$/)[0] } @stack;