gen_ld_sects.py

#!/usr/bin/env python
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2017, Linaro Limited
#

import sys
import re

def usage():
	print "Usage: {0} <section reg exp match> [<skip section>...]".format( \
		sys.argv[0])
	sys.exit (1)

def main():
	if len(sys.argv) < 2 :
		usage()

	in_shdr = False
	section_headers = re.compile("Section Headers:")
	key_to_flags = re.compile("Key to Flags:")
	match_rule = re.compile(sys.argv[1])
	skip_sections = sys.argv[2:]

	for line in sys.stdin:
		if section_headers.match(line) :
			in_shdr = True;
			continue
		if key_to_flags.match(line) :
			in_shdr = False;
			continue

		if not in_shdr :
			continue

		words = line.split()

		if len(words) < 3 :
			continue

		if words[0] == "[" :
			name_offs = 2
		else :
			name_offs = 1;

		sect_name = words[name_offs]
		sect_type = words[name_offs + 1]

		if sect_type != "PROGBITS" :
			continue

		if not match_rule.match(sect_name) :
			continue

		if sect_name in skip_sections :
			continue

		print '\t*({0})'.format(sect_name)

if __name__ == "__main__":
        main()