1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
# -*- coding: utf-8 -*-
# Copyright 2018 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""check compile units."""
import os
import subprocess
import check_ngcc
cu_checks = [check_ngcc.not_by_gcc]
def check_compile_unit(dso_path, producer, comp_path):
"""check all compiler flags used to build the compile unit.
Args:
dso_path: path to the elf/dso.
producer: DW_AT_producer contains the compiler command line.
comp_path: DW_AT_comp_dir + DW_AT_name.
Returns:
A set of failed tests.
"""
failed = set()
for c in cu_checks:
if not c(dso_path, producer, comp_path):
failed.add(c.__module__)
return failed
def check_compile_units(dso_path):
"""check all compile units in the given dso.
Args:
dso_path: path to the dso.
Returns:
True if everything looks fine otherwise False.
"""
failed = set()
producer = ""
comp_path = ""
readelf = subprocess.Popen(
["llvm-dwarfdump", "--recurse-depth=0", dso_path],
stdout=subprocess.PIPE,
stderr=open(os.devnull, "w"),
encoding="utf-8",
)
for l in readelf.stdout:
if "DW_TAG_compile_unit" in l:
if producer:
failed = failed.union(
check_compile_unit(dso_path, producer, comp_path)
)
producer = ""
comp_path = ""
elif "DW_AT_producer" in l:
producer = l
elif "DW_AT_name" in l:
comp_path = os.path.join(comp_path, l.split(":")[-1].strip())
elif "DW_AT_comp_dir" in l:
comp_path = os.path.join(l.split(":")[-1].strip(), comp_path)
if producer:
failed = failed.union(check_compile_unit(dso_path, producer, comp_path))
if failed:
print("%s failed check: %s" % (dso_path, " ".join(failed)))
return False
return True
|
