1#!/bin/sh
 2# SPDX-License-Identifier: GPL-2.0
 3#
 4# Check if atomic headers are up-to-date
 5
 6ATOMICDIR=$(dirname $0)
 7ATOMICTBL=${ATOMICDIR}/atomics.tbl
 8LINUXDIR=${ATOMICDIR}/../..
 9
10echo '' | sha1sum - > /dev/null 2>&1
11if [ $? -ne 0 ]; then
12	printf "sha1sum not available, skipping atomic header checks.\n"
13	exit 0
14fi
15
16cat <<EOF |
17asm-generic/atomic-instrumented.h
18asm-generic/atomic-long.h
19linux/atomic-fallback.h
20EOF
21while read header; do
22	OLDSUM="$(tail -n 1 ${LINUXDIR}/include/${header})"
23	OLDSUM="${OLDSUM#// }"
24
25	NEWSUM="$(sed '$d' ${LINUXDIR}/include/${header} | sha1sum)"
26	NEWSUM="${NEWSUM%% *}"
27
28	if [ "${OLDSUM}" != "${NEWSUM}" ]; then
29		printf "warning: generated include/${header} has been modified.\n"
30	fi
31done
32
33exit 0