hasavx

#!/usr/bin/env bash


Helpfile="hasavx [-q] file [file [file...]] : Find avx instructions in executables.
  Args:
   -h   print this help message
   -q   don't print error messages for files which aren't executables
"

#Get command line arguments
while getopts  "qh" flag
do
  case "$flag" in
    "q")
      BeQuiet="y"
      ;;
    "h")
      SendHelpAndQuit="y"
      ;;
    *)
      echo "Invalid argument specified." >&2
      exit 5
      ;;
  esac
done

#Send the help message and exit if -h was specified.
if [[ "$SendHelpAndQuit" == "y" ]]; then
  echo -e "$Helpfile"
  exit
fi

shift $(( $OPTIND - 1 ))

if [ -z "$1" ]; then
  echo "No arguments provided -- please provide a filename or use -h for options." >&2
  exit 2
fi


while [ -n "$1" ]; do
  filename="$1"

  if file "$filename" 2>/dev/null | grep -P "(current ar archive|LSB (executable|shared object))" 2>/dev/null >/dev/null ; then
    opcode_search=$(objdump -M intel -d $filename | /shared/ucl/apps/rcops_scripts/opcode -s AVX -m 1)
    if [ -n "$opcode_search" ]; then
      echo "$filename: has AVX instructions"
    fi
  else
    if [ -z "$BeQuiet" ]; then
      echo "$filename: not a recognised binary executable type" >&2
    fi
  fi

  shift
done