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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
import json
import os
import re
import subprocess
import sys
from collections import defaultdict, namedtuple
from sixgill import Body
scriptdir = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
HazardSummary = namedtuple(
"HazardSummary", ["function", "variable", "type", "GCFunction", "location"]
)
Callgraph = namedtuple(
"Callgraph",
[
"functionNames",
"nameToId",
"mangledToUnmangled",
"unmangledToMangled",
"calleesOf",
"callersOf",
"tags",
"calleeGraph",
"callerGraph",
],
)
def equal(got, expected):
if got != expected:
print("Got '%s', expected '%s'" % (got, expected))
def extract_unmangled(func):
return func.split("$")[-1]
class Test(object):
def __init__(self, indir, outdir, cfg, verbose=0):
self.indir = indir
self.outdir = outdir
self.cfg = cfg
self.verbose = verbose
def infile(self, path):
return os.path.join(self.indir, path)
def binpath(self, prog):
return os.path.join(self.cfg.sixgill_bin, prog)
def compile(self, source, options=""):
env = os.environ
env["CCACHE_DISABLE"] = "1"
if "-fexceptions" not in options and "-fno-exceptions" not in options:
options += " -fno-exceptions"
cmd = "{CXX} -c {source} -O3 -std=c++17 -fplugin={sixgill} -fplugin-arg-xgill-mangle=1 {options}".format( # NOQA: E501
source=self.infile(source),
CXX=self.cfg.cxx,
sixgill=self.cfg.sixgill_plugin,
options=options,
)
if self.cfg.verbose > 0:
print("Running %s" % cmd)
subprocess.check_call(["sh", "-c", cmd])
def load_db_entry(self, dbname, pattern):
"""Look up an entry from an XDB database file, 'pattern' may be an exact
matching string, or an re pattern object matching a single entry."""
if hasattr(pattern, "match"):
output = subprocess.check_output(
[self.binpath("xdbkeys"), dbname + ".xdb"], universal_newlines=True
)
matches = list(filter(lambda _: re.search(pattern, _), output.splitlines()))
if len(matches) == 0:
raise Exception("entry not found")
if len(matches) > 1:
raise Exception("multiple entries found")
pattern = matches[0]
output = subprocess.check_output(
[self.binpath("xdbfind"), "-json", dbname + ".xdb", pattern],
universal_newlines=True,
)
return json.loads(output)
def run_analysis_script(self, startPhase="gcTypes", upto=None):
open("defaults.py", "w").write(
"""\
analysis_scriptdir = '{scriptdir}'
sixgill_bin = '{bindir}'
""".format(
scriptdir=scriptdir, bindir=self.cfg.sixgill_bin
)
)
cmd = [
sys.executable,
os.path.join(scriptdir, "analyze.py"),
["-q", "", "-v"][min(self.verbose, 2)],
]
cmd += ["--first", startPhase]
if upto:
cmd += ["--last", upto]
cmd.append("--source=%s" % self.indir)
cmd.append("--js=%s" % self.cfg.js)
if self.cfg.verbose:
print("Running " + " ".join(cmd))
subprocess.check_call(cmd)
def computeGCTypes(self):
self.run_analysis_script("gcTypes", upto="gcTypes")
def computeHazards(self):
self.run_analysis_script("gcTypes")
def load_text_file(self, filename, extract=lambda l: l):
fullpath = os.path.join(self.outdir, filename)
values = (extract(line.strip()) for line in open(fullpath, "r"))
return list(filter(lambda _: _ is not None, values))
def load_json_file(self, filename, reviver=None):
fullpath = os.path.join(self.outdir, filename)
with open(fullpath) as fh:
return json.load(fh, object_hook=reviver)
def load_gcTypes(self):
def grab_type(line):
m = re.match(r"^(GC\w+): (.*)", line)
if m:
return (m.group(1) + "s", m.group(2))
return None
gctypes = defaultdict(list)
for collection, typename in self.load_text_file(
"gcTypes.txt", extract=grab_type
):
gctypes[collection].append(typename)
return gctypes
def load_typeInfo(self, filename="typeInfo.txt"):
return self.load_json_file(filename)
def load_funcInfo(self, filename="limitedFunctions.lst"):
return self.load_json_file(filename)
def load_gcFunctions(self):
return self.load_text_file("gcFunctions.lst", extract=extract_unmangled)
def load_callgraph(self):
data = Callgraph(
functionNames=["dummy"],
nameToId={},
mangledToUnmangled={},
unmangledToMangled={},
calleesOf=defaultdict(list),
callersOf=defaultdict(list),
tags=defaultdict(set),
calleeGraph=defaultdict(dict),
callerGraph=defaultdict(dict),
)
def lookup(id):
mangled = data.functionNames[int(id)]
return data.mangledToUnmangled.get(mangled, mangled)
def add_call(caller, callee, limit):
data.calleesOf[caller].append(callee)
data.callersOf[callee].append(caller)
data.calleeGraph[caller][callee] = True
data.callerGraph[callee][caller] = True
def process(line):
if line.startswith("#"):
name = line.split(" ", 1)[1]
data.nameToId[name] = len(data.functionNames)
data.functionNames.append(name)
return
if line.startswith("="):
m = re.match(r"^= (\d+) (.*)", line)
mangled = data.functionNames[int(m.group(1))]
unmangled = m.group(2)
data.nameToId[unmangled] = id
data.mangledToUnmangled[mangled] = unmangled
data.unmangledToMangled[unmangled] = mangled
return
limit = 0
m = re.match(r"^\w (?:/(\d+))? ", line)
if m:
limit = int(m[1])
tokens = line.split(" ")
if tokens[0] in ("D", "R"):
_, caller, callee = tokens
add_call(lookup(caller), lookup(callee), limit)
elif tokens[0] == "T":
data.tags[tokens[1]].add(line.split(" ", 2)[2])
elif tokens[0] in ("F", "V"):
pass
elif tokens[0] == "I":
m = re.match(r"^I (\d+) VARIABLE ([^\,]*)", line)
pass
self.load_text_file("callgraph.txt", extract=process)
return data
def load_hazards(self):
def grab_hazard(line):
m = re.match(
r"Function '(.*?)' has unrooted '(.*?)' of type '(.*?)' live across GC call '(.*?)' at (.*)", # NOQA: E501
line,
)
if m:
info = list(m.groups())
info[0] = info[0].split("$")[-1]
info[3] = info[3].split("$")[-1]
return HazardSummary(*info)
return None
return self.load_text_file("hazards.txt", extract=grab_hazard)
def process_body(self, body):
return Body(body)
def process_bodies(self, bodies):
return [self.process_body(b) for b in bodies]
|
