check_ops.sh

   1 #! /bin/sh
   2 # Script to check for duplicate function prologues in op.o
   3 # Typically this indicates missing FORCE_RET();
   4 # This script does not detect other errors that may be present.
   5
   6 # Usage: check_ops.sh [-m machine] [op.o]
   7 #   machine and op.o are guessed if not specified.
   8
   9 if [ "x$1" = "x-m" ]; then
  10   machine=$2
  11   shift 2
  12 else
  13   machine=`uname -m`
  14 fi
  15 if [ -z "$1" ]; then
  16   for f in `find . -name op.o`; do
  17     /bin/sh "$0" -m $machine $f
  18   done
  19   exit 0
  20 fi
  21
  22 case $machine in
  23   i?86)
  24     ret='\tret'
  25     ;;
  26   x86_64)
  27     ret='\tretq'
  28     ;;
  29   arm)
  30     ret='\tldm.*pc'
  31     ;;
  32   ppc* | powerpc*)
  33     ret='\tblr'
  34     ;;
  35   mips*)
  36     ret='\tjr.*ra'
  37     ;;
  38   *)
  39     echo "Unknown machine `uname -m`"
  40     ;;
  41 esac
  42 echo $1
  43 # op_exit_tb causes false positives on some hosts.
  44 ${CROSS}objdump -dr $1  | \
  45   sed -e '/>:$\|'"$ret"'/!d' -e 's/.*<\(.*\)>:/~\1:/' -e 's/.*'"$ret"'.*/!/' | \
  46   sed -e ':1;N;s/\n//;t1' | sed -e 's/~/\n/g' | grep -v '^op_exit_tb' | \
  47   grep '^op_.*!!'