1 files changed, 63 insertions, 0 deletions
diff --git a/scripts/check-initfini.awk b/scripts/check-initfini.awk
new file mode 100644
index 0000000..19514a9
--- /dev/null
+++ b/scripts/check-initfini.awk
@@ -0,0 +1,63 @@
+# Copyright (C) 2018 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C Library 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
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
+
+# This awk script expects to get command-line files that are each
+# the output of 'readelf -W --dyn-syms' on a single shared object.
+# It exits successfully (0) if none contained _init nor _fini in dynamic
+# symbol table.
+# It fails (1) if any did contain _init or _fini in dynamic symbol table.
+# It fails (2) if the input did not take the expected form.
+
+BEGIN { result = _init = _fini = sanity = 0 }
+
+function check_one(name) {
+  if (!sanity) {
+    print name ": *** input did not look like readelf -d output";
+    result = 2;
+  } else {
+    ok = 1;
+    if (_init) {
+      print name ": *** _init is in dynamic symbol table";
+      result = result ? result : 1;
+      ok = 0;
+    }
+    if (_fini) {
+      print name ": *** _fini is in dynamic symbol table";
+      result = result ? result : 1;
+      ok = 0;
+    }
+    if (ok)
+      print name ": OK";
+  }
+
+  _init = _fini = sanity = 0
+}
+
+FILENAME != lastfile {
+  if (lastfile)
+    check_one(lastfile);
+  lastfile = FILENAME;
+}
+
+$1 == "Symbol" && $2 == "table" && $3 == "'.dynsym'" { sanity = 1 }
+$8 == "_init" { _init = 1 }
+$8 == "_fini" { _fini = 1 }
+
+END {
+  check_one(lastfile);
+  exit(result);
+}