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#!/bin/sh# SPDX-License-Identifier: GPL-2.0## Check if atomic headers are up-to-date ATOMICDIR=$(dirname $0)ATOMICTBL=${ATOMICDIR}/atomics.tblLINUXDIR=${ATOMICDIR}/../.. echo '' | sha1sum - > /dev/null 2>&1if [ $? -ne 0 ]; then	printf "sha1sum not available, skipping atomic header checks.\n"	exit 0fi cat <<EOF |asm-generic/atomic-instrumented.hasm-generic/atomic-long.hlinux/atomic-fallback.hEOFwhile read header; do	OLDSUM="$(tail -n 1 ${LINUXDIR}/include/${header})"	OLDSUM="${OLDSUM#// }" 	NEWSUM="$(sed '$d' ${LINUXDIR}/include/${header} | sha1sum)"	NEWSUM="${NEWSUM%% *}" 	if [ "${OLDSUM}" != "${NEWSUM}" ]; then		printf "warning: generated include/${header} has been modified.\n"	fidone exit 0