mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
d8d2d38275
Python retired in 2020, and some distributions do not provide the
'python' command any more.
As in commit 51839e29cb
("scripts: switch explicitly to Python 3"),
we need to use more specific 'python3' to invoke scripts even if they
are written in a way compatible with both Python 2 and 3.
This commit removes the variable 'PYTHON', and switches the existing
users to 'PYTHON3'.
BTW, PEP 394 (https://www.python.org/dev/peps/pep-0394/) is a helpful
material.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
65 lines
1.7 KiB
Python
65 lines
1.7 KiB
Python
#!/usr/bin/env python3
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Usage: unwcheck.py FILE
|
|
#
|
|
# This script checks the unwind info of each function in file FILE
|
|
# and verifies that the sum of the region-lengths matches the total
|
|
# length of the function.
|
|
#
|
|
# Based on a shell/awk script originally written by Harish Patil,
|
|
# which was converted to Perl by Matthew Chapman, which was converted
|
|
# to Python by David Mosberger.
|
|
#
|
|
import os
|
|
import re
|
|
import sys
|
|
|
|
if len(sys.argv) != 2:
|
|
print("Usage: %s FILE" % sys.argv[0])
|
|
sys.exit(2)
|
|
|
|
readelf = os.getenv("READELF", "readelf")
|
|
|
|
start_pattern = re.compile("<([^>]*)>: \[0x([0-9a-f]+)-0x([0-9a-f]+)\]")
|
|
rlen_pattern = re.compile(".*rlen=([0-9]+)")
|
|
|
|
def check_func (func, slots, rlen_sum):
|
|
if slots != rlen_sum:
|
|
global num_errors
|
|
num_errors += 1
|
|
if not func: func = "[%#x-%#x]" % (start, end)
|
|
print("ERROR: %s: %lu slots, total region length = %lu" % (func, slots, rlen_sum))
|
|
return
|
|
|
|
num_funcs = 0
|
|
num_errors = 0
|
|
func = False
|
|
slots = 0
|
|
rlen_sum = 0
|
|
for line in os.popen("%s -u %s" % (readelf, sys.argv[1])):
|
|
m = start_pattern.match(line)
|
|
if m:
|
|
check_func(func, slots, rlen_sum)
|
|
|
|
func = m.group(1)
|
|
start = int(m.group(2), 16)
|
|
end = int(m.group(3), 16)
|
|
slots = 3 * (end - start) / 16
|
|
rlen_sum = 0
|
|
num_funcs += 1
|
|
else:
|
|
m = rlen_pattern.match(line)
|
|
if m:
|
|
rlen_sum += int(m.group(1))
|
|
check_func(func, slots, rlen_sum)
|
|
|
|
if num_errors == 0:
|
|
print("No errors detected in %u functions." % num_funcs)
|
|
else:
|
|
if num_errors > 1:
|
|
err="errors"
|
|
else:
|
|
err="error"
|
|
print("%u %s detected in %u functions." % (num_errors, err, num_funcs))
|
|
sys.exit(1)
|