Merge tag 'zonefs-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal...
[linux-block.git] / arch / ia64 / scripts / unwcheck.py
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d8d2d382 1#!/usr/bin/env python3
b2441318 2# SPDX-License-Identifier: GPL-2.0
1da177e4
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3#
4# Usage: unwcheck.py FILE
5#
6# This script checks the unwind info of each function in file FILE
7# and verifies that the sum of the region-lengths matches the total
8# length of the function.
9#
10# Based on a shell/awk script originally written by Harish Patil,
11# which was converted to Perl by Matthew Chapman, which was converted
12# to Python by David Mosberger.
13#
14import os
15import re
16import sys
17
18if len(sys.argv) != 2:
bd5edbe6 19 print("Usage: %s FILE" % sys.argv[0])
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20 sys.exit(2)
21
22readelf = os.getenv("READELF", "readelf")
23
24start_pattern = re.compile("<([^>]*)>: \[0x([0-9a-f]+)-0x([0-9a-f]+)\]")
25rlen_pattern = re.compile(".*rlen=([0-9]+)")
26
27def check_func (func, slots, rlen_sum):
28 if slots != rlen_sum:
29 global num_errors
30 num_errors += 1
31 if not func: func = "[%#x-%#x]" % (start, end)
bd5edbe6 32 print("ERROR: %s: %lu slots, total region length = %lu" % (func, slots, rlen_sum))
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33 return
34
35num_funcs = 0
36num_errors = 0
37func = False
38slots = 0
39rlen_sum = 0
40for line in os.popen("%s -u %s" % (readelf, sys.argv[1])):
41 m = start_pattern.match(line)
42 if m:
43 check_func(func, slots, rlen_sum)
44
45 func = m.group(1)
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46 start = int(m.group(2), 16)
47 end = int(m.group(3), 16)
1da177e4 48 slots = 3 * (end - start) / 16
bd5edbe6 49 rlen_sum = 0
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50 num_funcs += 1
51 else:
52 m = rlen_pattern.match(line)
53 if m:
bd5edbe6 54 rlen_sum += int(m.group(1))
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55check_func(func, slots, rlen_sum)
56
57if num_errors == 0:
bd5edbe6 58 print("No errors detected in %u functions." % num_funcs)
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59else:
60 if num_errors > 1:
61 err="errors"
62 else:
63 err="error"
bd5edbe6 64 print("%u %s detected in %u functions." % (num_errors, err, num_funcs))
1da177e4 65 sys.exit(1)