Archipelago » qemu

#! /bin/sh

# Script to check for duplicate function prologues in op.o

# Typically this indicates missing FORCE_RET();

# This script does not detect other errors that may be present.

# Usage: check_ops.sh [-m machine] [op.o]

#   machine and op.o are guessed if not specified.

if [ "x$1" = "x-m" ]; then

  machine=$2

  shift 2

else

  machine=`uname -m`

fi

if [ -z "$1" ]; then

  for f in `find . -name op.o`; do

    /bin/sh "$0" -m $machine $f

  done

  exit 0

fi

case $machine in

  i?86)

    ret='\tret'

    ;;

  x86_64)

    ret='\tretq'

    ;;

  arm)

    ret='\tldm.*pc'

    ;;

  ppc* | powerpc*)

    ret='\tblr'

    ;;

  mips*)

    ret='\tjr.*ra'

    ;;

  s390*)

    ret='\tbr.*'

    ;;

  *)

    echo "Unknown machine `uname -m`"

    ;;

esac

echo $1

# op_exit_tb causes false positives on some hosts.

${CROSS}objdump -dr $1  | \

  sed -e '/>:$\|'"$ret"'/!d' -e 's/.*<\(.*\)>:/~\1:/' -e 's/.*'"$ret"'.*/!/' | \

  sed -e ':1;N;s/\n//;t1' | sed -e 's/~/\n/g' | grep -v '^op_exit_tb' | \

  grep '^op_.*!!'