build/gdb-add-index

   1 #!/bin/bash
   2 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5 #
   6 # Saves the gdb index for a given binary and its shared library dependencies.
   7
   8 set -e
   9
  10 if [[ ! $# == 1 ]]; then
  11   echo "Usage: $0 path-to-binary"
  12   exit 1
  13 fi
  14
  15 FILENAME="$1"
  16 if [[ ! -f "$FILENAME" ]]; then
  17   echo "Path $FILENAME does not exist."
  18   exit 1
  19 fi
  20
  21 # We're good to go! Create temp directory for index files.
  22 DIRECTORY=$(mktemp -d)
  23 echo "Made temp directory $DIRECTORY."
  24
  25 # Always remove directory on exit.
  26 trap "{ echo -n Removing temp directory $DIRECTORY...;
  27   rm -rf $DIRECTORY; echo done; }" EXIT
  28
  29 # Grab all the chromium shared library files.
  30 so_files=$(ldd "$FILENAME" 2>/dev/null \
  31   | grep $(pwd) \
  32   | sed "s/.*[ \t]\(.*\) (.*/\1/")
  33
  34 # Add index to binary and the shared library dependencies.
  35 for file in "$FILENAME" $so_files; do
  36   basename=$(basename "$file")
  37   echo -n "Adding index to $basename..."
  38   readelf_out=$(readelf -S "$file")
  39   if [[ $readelf_out =~ "gdb_index" ]]; then
  40     echo "already contains index. Skipped."
  41   else
  42     gdb -batch "$file" -ex "save gdb-index $DIRECTORY" -ex "quit"
  43     objcopy --add-section .gdb_index="$DIRECTORY"/$basename.gdb-index \
  44       --set-section-flags .gdb_index=readonly "$file" "$file"
  45     echo "done."
  46   fi
  47 done