#! /usr/bin/env bash

# Copyright (C) 2014 Red Hat, Inc.

# This file is part of elfutils.

#

# This file 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 3 of the License, or

# (at your option) any later version.

#

# elfutils 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, see <http://www.gnu.org/licenses/>.

. $srcdir/backtrace-subr.sh

tempfiles deleted deleted-lib.so

cp -p ${abs_builddir}/deleted ${abs_builddir}/deleted-lib.so .

# We don't want to run the deleted process under valgrind then

# stack will see the valgrind process backtrace.

OLD_VALGRIND_CMD="$VALGRIND_CMD"

unset VALGRIND_CMD

pid=$(testrun ${abs_builddir}/deleted)

sleep 1

rm -f deleted deleted-lib.so

tempfiles bt bt.err

set VALGRIND_CMD="$OLD_VALGRIND_CMD"

# It may have non-zero exit code with:

# .../elfutils/src/stack: dwfl_thread_getframes tid 26376 at 0x4006c8 in .../elfutils/tests/deleted: no matching address range

testrun ${abs_top_builddir}/src/stack -p $pid 1>bt 2>bt.err || true

cat bt bt.err

kill -9 $pid

wait

check_native_unsupported bt.err deleted

if grep -q -E ': dwfl_linux_proc_attach pid ([[:digit:]]+): Function not implemented$' bt.err; then

  echo >&2 deleted: OS not supported

  exit 77

fi

# For PPC64 we need access to the OPD table which we get through the shdrs

# (see backends/ppc64_init.c) but for the deleted-lib we only have phdrs.

# So we don't have the name of the function. But since we should find

# the EH_FRAME through phdrs just fine, we can unwind into main.

if test "`uname -m`" != "ppc64"; then

  grep -qw libfunc bt

fi

grep -qw main bt