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
|
from __future__ import print_function
import sys
import subprocess
import tempfile
import os
import shutil
import argparse
class Opts(object):
def __init__(self, args):
kvs = args.index('--')
kve = args.index('--', kvs + 1)
kv = args[kvs + 1:kve]
args = args[:kvs] + args[kve + 1:]
parser = argparse.ArgumentParser()
parser.add_argument('--plugin')
kvargs = parser.parse_args(kv)
self.ar_plugin = kvargs.plugin
self.archiver = args[0]
self.arch_type = args[1]
self.llvm_ar_format = args[2]
self.build_root = args[3]
self.plugin = args[4]
self.enable_openssl3 = args[5]
self.output = args[6]
auto_input = args[7:]
self.need_modify = False
self.extra_args = []
if self.arch_type.endswith('_AR'):
if self.arch_type == 'GNU_AR':
self.create_flags = ['rcs']
self.modify_flags = ['-M']
elif self.arch_type == 'LLVM_AR':
self.create_flags = ['rcs', '--format=%s' % self.llvm_ar_format]
self.modify_flags = ['-M']
self.need_modify = any(item.endswith('.a') for item in auto_input)
if self.need_modify:
self.objs = list(filter(lambda x: x.endswith('.o'), auto_input))
self.libs = list(filter(lambda x: x.endswith('.a'), auto_input))
else:
self.objs = auto_input
self.libs = []
self.output_opts = [self.output]
elif self.arch_type == 'LIBTOOL':
self.create_flags = ['-static']
self.objs = auto_input
self.libs = []
self.output_opts = ['-o', self.output]
elif self.arch_type == 'LIB':
self.create_flags = []
self.extra_args = list(filter(lambda x: x.startswith('/'), auto_input))
self.objs = list(filter(lambda x: not x.startswith('/'), auto_input))
self.libs = []
self.output_opts = ['/OUT:' + self.output]
self.plugin_flags = ['--plugin', self.plugin] if self.plugin != 'None' else []
def get_opts(args):
return Opts(args)
def run(*args):
return subprocess.check_output(list(args), shell=False).strip()
def gen_renames_1(d):
for l in d.split('\n'):
l = l.strip()
if ' ' in l:
yield l.split(' ')[-1]
def have_prefix(l, p):
for x in l:
if not x.startswith(p):
return False
return True
def gen_renames_2(p, d):
l = list(gen_renames_1(d))
a = have_prefix(l, '_')
for s in l:
if 'asan_globals' in s:
continue
if s in ['HMAC', 'SHA1', 'SHA256', 'SHA256', 'SHA512', 'RC4', 'MD5', 'SHA384']:
continue
if a and s[1:] in ['HMAC', 'SHA1', 'SHA256', 'SHA256', 'SHA512', 'RC4', 'MD5', 'SHA384']:
continue
if a:
yield s + ' _' + p + s[1:]
else:
yield s + ' ' + p + s
def gen_renames(p, d):
return '\n'.join(gen_renames_2(p, d)).strip() + '\n'
def rename_syms(where, ret):
p = 'v1_'
# find symbols to rename
syms = run(where + 'llvm-nm', '--extern-only', '--defined-only', '-A', ret)
# prepare rename plan
renames = gen_renames(p, syms)
tmp = ret + '.syms'
with open(tmp, 'w') as f:
f.write(renames)
# rename symbols
run(where + 'llvm-objcopy', '--redefine-syms=' + tmp, ret)
os.unlink(tmp)
if __name__ == "__main__":
opts = get_opts(sys.argv[1:])
# There is a bug in llvm-ar. Some files with size slightly greater 2^32
# still have GNU format instead of GNU64 and cause link problems.
# Workaround just lowers llvm-ar's GNU64 threshold to 2^31.
if opts.arch_type == 'LLVM_AR':
os.environ['SYM64_THRESHOLD'] = '31'
def call():
try:
p = subprocess.Popen(cmd, stdin=stdin, cwd=opts.build_root)
rc = p.wait()
return rc
except OSError as e:
raise Exception('while running %s: %s' % (' '.join(cmd), e))
try:
os.unlink(opts.output)
except OSError:
pass
if not opts.need_modify:
cmd = [opts.archiver] + opts.create_flags + opts.plugin_flags + opts.extra_args + opts.output_opts + opts.objs
stdin = None
exit_code = call()
elif len(opts.objs) == 0 and len(opts.libs) == 1:
shutil.copy(opts.libs[0], opts.output)
exit_code = 0
else:
temp = tempfile.NamedTemporaryFile(dir=os.path.dirname(opts.output), delete=False)
with open(temp.name, 'w') as tmp:
tmp.write('CREATE {0}\n'.format(opts.output))
for lib in opts.libs:
tmp.write('ADDLIB {0}\n'.format(lib))
for obj in opts.objs:
tmp.write('ADDMOD {0}\n'.format(obj))
tmp.write('SAVE\n')
tmp.write('END\n')
cmd = [opts.archiver] + opts.modify_flags + opts.plugin_flags
stdin = open(temp.name)
exit_code = call()
os.remove(temp.name)
if exit_code != 0:
raise Exception('{0} returned non-zero exit code {1}. Stop.'.format(' '.join(cmd), exit_code))
if opts.enable_openssl3 != 'no-openssl3' and os.path.basename(opts.output) in ['libcontrib-libs-openssl.a', 'liblibs-openssl-crypto.a']:
rename_syms(os.path.dirname(opts.archiver) + '/', opts.output)
if opts.ar_plugin:
subprocess.check_call([sys.executable, opts.ar_plugin, opts.output, '--'] + sys.argv[1:])
|