NetBSD/sys/conf/mkldscript.sh

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#!/bin/sh
# $NetBSD: mkldscript.sh,v 1.3 2014/11/12 13:23:41 christos Exp $
#
# This script is used by cats, luna68k and shark to produce
# a kernel linker script that merges link sets for a.out kernels
# (without -t). It is also used for the same reason by kernel modules
# (with -t).
PROG="$(basename "$0")"
TEMPLATE=
mksets() {
"${OBJDUMP:-objdump}" -x "$@" | fgrep "RELOCATION RECORDS FOR [link_set" | \
sort -u | sed 's/^.*\[\(.*\)\]:$/\1/'
}
while getopts "t:" f; do
case "$f" in
t)
TEMPLATE=${OPTARG};;
*)
echo "Usage: $PROG [-t <template>] objs" 1>^&2
exit 1;;
esac
done
shift $((OPTIND - 1))
SETS=$(mksets "$@")
if [ -n "${TEMPLATE}" ]; then
grep -v '^}$' "${TEMPLATE}"
fi
for s in $SETS; do
printf ' . = ALIGN(4);\n'
printf ' PROVIDE (__start_%s = .);\n' $s
if [ -n "${TEMPLATE}" ]; then
printf ' %s : { *(%s) }\n' $s $s
else
printf ' *(%s)\n' $s
fi
printf ' PROVIDE (__stop_%s = .);\n' $s
done
if [ -n "${TEMPLATE}" ]; then
printf '}\n'
fi