chrome/tools/build/mac/verify_order

   1 #!/bin/bash
   2
   3 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style license that can be
   5 # found in the LICENSE file.
   6
   7 # Verifies that no global text symbols are present in a Mach-O file
   8 # (MACH_O_FILE) at an address higher than the address of a specific symbol
   9 # (LAST_SYMBOL).  If LAST_SYMBOL is not found in MACH_O_FILE or if symbols
  10 # are present with addresses higher than LAST_SYMBOL's address, an error
  11 # message is printed to stderr, and the script will exit nonzero.
  12 #
  13 # This script can be used to verify that all of the global text symbols in
  14 # a Mach-O file are accounted for in an order file.
  15
  16 if [ ${#} -ne 2 ] ; then
  17   echo "usage: ${0} LAST_SYMBOL MACH_O_FILE" >& 2
  18   exit 1
  19 fi
  20
  21 LAST_SYMBOL=${1}
  22 MACH_O_FILE=${2}
  23
  24 SYMBOLS=$(nm -fgjn -s __TEXT __text "${MACH_O_FILE}")
  25 if [ ${?} -ne 0 ] || [ -z "${SYMBOLS}" ] ; then
  26   echo "${0}: no symbols in ${MACH_O_FILE}" >& 2
  27   exit 1
  28 fi
  29
  30 LAST_SYMBOLS=$(grep -A 100 -Fx "${LAST_SYMBOL}" <<< "${SYMBOLS}")
  31 if [ ${?} -ne 0 ] || [ -z "${LAST_SYMBOLS}" ] ; then
  32   echo "${0}: symbol ${LAST_SYMBOL} not found in ${MACH_O_FILE}" >& 2
  33   exit 1
  34 fi
  35
  36 UNORDERED_SYMBOLS=$(grep -Fvx "${LAST_SYMBOL}" <<< "${LAST_SYMBOLS}")
  37 if [ ${?} -eq 0 ] || [ -n "${UNORDERED_SYMBOLS}" ] ; then
  38   echo "${0}: unordered symbols in ${MACH_O_FILE}:" >& 2
  39   echo "${UNORDERED_SYMBOLS}" >& 2
  40   exit 1
  41 fi
  42
  43 exit 0