1 files changed, 73 insertions, 0 deletions
diff --git a/lib/Lintian/Check/Binaries/Profiling.pm b/lib/Lintian/Check/Binaries/Profiling.pm
new file mode 100644
index 0000000..4b52937
--- /dev/null
+++ b/lib/Lintian/Check/Binaries/Profiling.pm
@@ -0,0 +1,73 @@
+# binaries/profiling -- lintian check script -*- perl -*-
+
+# Copyright (C) 1998 Christian Schwarz and Richard Braakman
+# Copyright (C) 2012 Kees Cook
+# Copyright (C) 2017-2020 Chris Lamb <lamby@debian.org>
+# Copyright (C) 2021 Felix Lechner
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, you can find it on the World Wide
+# Web at https://www.gnu.org/copyleft/gpl.html, or write to the Free
+# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+# MA 02110-1301, USA.
+
+package Lintian::Check::Binaries::Profiling;
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Moo;
+use namespace::clean;
+
+with 'Lintian::Check';
+
+sub visit_installed_files {
+    my ($self, $item) = @_;
+
+    my $architecture = $self->processable->fields->value('Architecture');
+
+    my $is_profiled = 0;
+
+    for my $symbol (@{$item->elf->{SYMBOLS} // [] }) {
+
+        # According to the binutils documentation[1], the profiling symbol
+        # can be named "mcount", "_mcount" or even "__mcount".
+        # [1] http://sourceware.org/binutils/docs/gprof/Implementation.html
+        $is_profiled = 1
+          if $symbol->version =~ /^GLIBC_.*/
+          && $symbol->name =~ m{\A _?+ _?+ (gnu_)?+mcount(_nc)?+ \Z}xsm
+          && ($symbol->section eq 'UND' || $symbol->section eq '.text');
+
+        # This code was used to detect profiled code in Wheezy and earlier
+        $is_profiled = 1
+          if $symbol->section eq '.text'
+          && $symbol->version eq 'Base'
+          && $symbol->name eq '__gmon_start__'
+          && $architecture ne 'hppa';
+    }
+
+    $self->pointed_hint('binary-compiled-with-profiling-enabled',
+        $item->pointer)
+      if $is_profiled;
+
+    return;
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et