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#!/bin/sh
#
# Helper script - check if a binary is tagged as NX-compatible or not.
set -e
for FILE in "$@"; do
if [ ! -f "${FILE}" ]; then
echo "${FILE} does not exist. ABORT."
exit 1
fi
# On older toolchains pre-bookworm, objdump on arm64 does not
# include appropriate support.
case "$FILE" in
*aa64*)
echo "$0: Ignoring arm64 binary - objdump too old"
continue
;;
esac
echo "Checking NX bit on ${FILE}:"
DLL_CHARACTERISTICS=$(objdump -x "${FILE}" | awk '/DllCharacteristics/ {print $2}')
echo " DllCharacteristics $DLL_CHARACTERISTICS"
case $DLL_CHARACTERISTICS in
00000000)
echo " NOT tagged as NX-compatible"
;;
00000100)
echo " tagged as NX-compatible"
;;
*)
echo " UNRECOGNISED value, ABORT";
exit 1
;;
esac
done
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