michael@0: #!/bin/bash
michael@0: # Copyright (c) 2012 The Chromium Authors. All rights reserved.
michael@0: # Use of this source code is governed by a BSD-style license that can be
michael@0: # found in the LICENSE file.
michael@0: #
michael@0: # Saves the gdb index for a given binary and its shared library dependencies.
michael@0: 
michael@0: set -e
michael@0: 
michael@0: if [[ ! $# == 1 ]]; then
michael@0:   echo "Usage: $0 path-to-binary"
michael@0:   exit 1
michael@0: fi
michael@0: 
michael@0: FILENAME="$1"
michael@0: if [[ ! -f "$FILENAME" ]]; then
michael@0:   echo "Path $FILENAME does not exist."
michael@0:   exit 1
michael@0: fi
michael@0: 
michael@0: # We're good to go! Create temp directory for index files.
michael@0: DIRECTORY=$(mktemp -d)
michael@0: echo "Made temp directory $DIRECTORY."
michael@0: 
michael@0: # Always remove directory on exit.
michael@0: trap "{ echo -n Removing temp directory $DIRECTORY...;
michael@0:   rm -rf $DIRECTORY; echo done; }" EXIT
michael@0: 
michael@0: # Grab all the chromium shared library files.
michael@0: so_files=$(ldd "$FILENAME" 2>/dev/null \
michael@0:   | grep $(dirname "$FILENAME") \
michael@0:   | sed "s/.*[ \t]\(.*\) (.*/\1/")
michael@0: 
michael@0: # Add index to binary and the shared library dependencies.
michael@0: for file in "$FILENAME" $so_files; do
michael@0:   basename=$(basename "$file")
michael@0:   echo -n "Adding index to $basename..."
michael@0:   readelf_out=$(readelf -S "$file")
michael@0:   if [[ $readelf_out =~ "gdb_index" ]]; then
michael@0:     echo "already contains index. Skipped."
michael@0:   else
michael@0:     gdb -batch "$file" -ex "save gdb-index $DIRECTORY" -ex "quit"
michael@0:     objcopy --add-section .gdb_index="$DIRECTORY"/$basename.gdb-index \
michael@0:       --set-section-flags .gdb_index=readonly "$file" "$file"
michael@0:     echo "done."
michael@0:   fi
michael@0: done