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#!/bin/sh
# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Copyright (C) 2010 Free Software Foundation, Inc.
# 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 3 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, see <http://www.gnu.org/licenses/>.
# This is a modification of gdb-add-index that recursively adds an index
# to the shared libraries dependencies from the same build.
target="$1"
target_dir="${target%/*}"
OLDIFS=$IFS
IFS=$'\n'
shared_libraries=$(
ldd -d "$target" | grep "$target_dir" | cut -d '>' -f2 | cut -d ' ' -f2
)
# This function is basically the RedHat's gdb-add-index script and is why
# we have the FSF copyright above.
function index_one_file {
local file="$1"
local dir="${file%/*}"
# We don't care if gdb gives an error.
gdb -nx --batch-silent -ex "file $file" -ex "save gdb-index $dir"
if test -f "${file}.gdb-index"; then
objcopy --add-section .gdb_index="${file}.gdb-index" --set-section-flags \
.gdb_index=readonly "$file" "$file"
rm -f "${file}.gdb-index"
fi
}
function maybe_index {
readelf -e "$1" | grep '.gdb_index' > /dev/null 2>&1
if [[ "$?" != 0 ]]; then
echo "Adding .gdb_index to $1"
index_one_file "$1"
else
echo "Skipping $1 (already has .gdb_index)"
fi
}
maybe_index "$target"
for lib in $shared_libraries; do
maybe_index "$lib"
done
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