# 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);

}