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#!/bin/sh
# Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
set -e
output=jmptbl.s
build=.
for i
do
case $i in
-o)
output=$2
shift 2
;;
-b)
build=$2
shift 2
;;
--bti=*)
enable_bti=$(echo $1 | sed 's/--bti=\(.*\)/\1/')
shift 1
;;
--)
shift
break
;;
-*)
echo usage: gentbl.sh [-o output] [-b dir] file ... >&2
exit 1
;;
esac
done
tmp=`mktemp`
trap "rm -f $$.tmp" EXIT INT QUIT
rm -f $output
# Pre-process include files
awk '!/^$/ && !/[:blank:]*#.*/{
if (NF == 2 && $1 == "include") {
while ((getline line < $2) > 0)
if (line !~ /^$/ && line !~ /[:blank:]*#.*/)
print line
close($2)
} else
print
}' "$@" |
awk -v OFS="\t" '
BEGIN{print "#index\tlib\tfunction\t[patch]"}
{print NR-1, $0}' | tee $build/jmptbl.i |
awk -v OFS="\n" -v BTI=$enable_bti '
BEGIN {print "\t.text",
"\t.globl\tjmptbl",
"jmptbl:"}
{sub(/[:blank:]*#.*/,"")}
!/^$/ {
if (BTI == 1)
print "\tbti\tj"
if ($3 == "reserved")
print "\t.word\t0x0"
else
print "\tb\t" $3}' > $$.tmp &&
mv $$.tmp $output
|
