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
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
|
#===----------------------------------------------------------------------===##
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#
#===----------------------------------------------------------------------===##
import ast
import distutils.spawn
import sys
import re
import libcxx.util
from pprint import pformat
def read_syms_from_list(slist):
"""
Read a list of symbols from a list of strings.
Each string is one symbol.
"""
return [ast.literal_eval(l) for l in slist]
def read_syms_from_file(filename):
"""
Read a list of symbols in from a file.
"""
with open(filename, 'r') as f:
data = f.read()
return read_syms_from_list(data.splitlines())
def read_blacklist(filename):
with open(filename, 'r') as f:
data = f.read()
lines = [l.strip() for l in data.splitlines() if l.strip()]
lines = [l for l in lines if not l.startswith('#')]
return lines
def write_syms(sym_list, out=None, names_only=False, filter=None):
"""
Write a list of symbols to the file named by out.
"""
out_str = ''
out_list = sym_list
out_list.sort(key=lambda x: x['name'])
if filter is not None:
out_list = filter(out_list)
if names_only:
out_list = [sym['name'] for sym in out_list]
for sym in out_list:
# Use pformat for consistent ordering of keys.
out_str += pformat(sym, width=100000) + '\n'
if out is None:
sys.stdout.write(out_str)
else:
with open(out, 'w') as f:
f.write(out_str)
_cppfilt_exe = distutils.spawn.find_executable('c++filt')
def demangle_symbol(symbol):
if _cppfilt_exe is None:
return symbol
out, _, exit_code = libcxx.util.executeCommandVerbose(
[_cppfilt_exe], input=symbol)
if exit_code != 0:
return symbol
return out
def is_elf(filename):
with open(filename, 'rb') as f:
magic_bytes = f.read(4)
return magic_bytes == b'\x7fELF'
def is_mach_o(filename):
with open(filename, 'rb') as f:
magic_bytes = f.read(4)
return magic_bytes in [
'\xfe\xed\xfa\xce', # MH_MAGIC
'\xce\xfa\xed\xfe', # MH_CIGAM
'\xfe\xed\xfa\xcf', # MH_MAGIC_64
'\xcf\xfa\xed\xfe', # MH_CIGAM_64
'\xca\xfe\xba\xbe', # FAT_MAGIC
'\xbe\xba\xfe\xca' # FAT_CIGAM
]
def is_library_file(filename):
if sys.platform == 'darwin':
return is_mach_o(filename)
else:
return is_elf(filename)
def extract_or_load(filename):
import libcxx.sym_check.extract
if is_library_file(filename):
return libcxx.sym_check.extract.extract_symbols(filename)
return read_syms_from_file(filename)
def adjust_mangled_name(name):
if not name.startswith('__Z'):
return name
return name[1:]
new_delete_std_symbols = [
'_Znam',
'_Znwm',
'_ZdaPv',
'_ZdaPvm',
'_ZdlPv',
'_ZdlPvm'
]
cxxabi_symbols = [
'___dynamic_cast',
'___gxx_personality_v0',
'_ZTIDi',
'_ZTIDn',
'_ZTIDs',
'_ZTIPDi',
'_ZTIPDn',
'_ZTIPDs',
'_ZTIPKDi',
'_ZTIPKDn',
'_ZTIPKDs',
'_ZTIPKa',
'_ZTIPKb',
'_ZTIPKc',
'_ZTIPKd',
'_ZTIPKe',
'_ZTIPKf',
'_ZTIPKh',
'_ZTIPKi',
'_ZTIPKj',
'_ZTIPKl',
'_ZTIPKm',
'_ZTIPKs',
'_ZTIPKt',
'_ZTIPKv',
'_ZTIPKw',
'_ZTIPKx',
'_ZTIPKy',
'_ZTIPa',
'_ZTIPb',
'_ZTIPc',
'_ZTIPd',
'_ZTIPe',
'_ZTIPf',
'_ZTIPh',
'_ZTIPi',
'_ZTIPj',
'_ZTIPl',
'_ZTIPm',
'_ZTIPs',
'_ZTIPt',
'_ZTIPv',
'_ZTIPw',
'_ZTIPx',
'_ZTIPy',
'_ZTIa',
'_ZTIb',
'_ZTIc',
'_ZTId',
'_ZTIe',
'_ZTIf',
'_ZTIh',
'_ZTIi',
'_ZTIj',
'_ZTIl',
'_ZTIm',
'_ZTIs',
'_ZTIt',
'_ZTIv',
'_ZTIw',
'_ZTIx',
'_ZTIy',
'_ZTSDi',
'_ZTSDn',
'_ZTSDs',
'_ZTSPDi',
'_ZTSPDn',
'_ZTSPDs',
'_ZTSPKDi',
'_ZTSPKDn',
'_ZTSPKDs',
'_ZTSPKa',
'_ZTSPKb',
'_ZTSPKc',
'_ZTSPKd',
'_ZTSPKe',
'_ZTSPKf',
'_ZTSPKh',
'_ZTSPKi',
'_ZTSPKj',
'_ZTSPKl',
'_ZTSPKm',
'_ZTSPKs',
'_ZTSPKt',
'_ZTSPKv',
'_ZTSPKw',
'_ZTSPKx',
'_ZTSPKy',
'_ZTSPa',
'_ZTSPb',
'_ZTSPc',
'_ZTSPd',
'_ZTSPe',
'_ZTSPf',
'_ZTSPh',
'_ZTSPi',
'_ZTSPj',
'_ZTSPl',
'_ZTSPm',
'_ZTSPs',
'_ZTSPt',
'_ZTSPv',
'_ZTSPw',
'_ZTSPx',
'_ZTSPy',
'_ZTSa',
'_ZTSb',
'_ZTSc',
'_ZTSd',
'_ZTSe',
'_ZTSf',
'_ZTSh',
'_ZTSi',
'_ZTSj',
'_ZTSl',
'_ZTSm',
'_ZTSs',
'_ZTSt',
'_ZTSv',
'_ZTSw',
'_ZTSx',
'_ZTSy'
]
def is_stdlib_symbol_name(name, sym):
name = adjust_mangled_name(name)
if re.search("@GLIBC|@GCC", name):
# Only when symbol is defined do we consider it ours
return sym['is_defined']
if re.search('(St[0-9])|(__cxa)|(__cxxabi)', name):
return True
if name in new_delete_std_symbols:
return True
if name in cxxabi_symbols:
return True
if name.startswith('_Z'):
return True
return False
def filter_stdlib_symbols(syms):
stdlib_symbols = []
other_symbols = []
for s in syms:
canon_name = adjust_mangled_name(s['name'])
if not is_stdlib_symbol_name(canon_name, s):
other_symbols += [s]
else:
stdlib_symbols += [s]
return stdlib_symbols, other_symbols
|
