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
|
#!/usr/bin/env python
#
# Copyright (C) 2016 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
"""Generates source for stub shared libraries for the NDK."""
import argparse
import json
import logging
import os
import sys
from typing import Iterable, TextIO
import symbolfile
from symbolfile import Arch, Version
class Generator:
"""Output generator that writes stub source files and version scripts."""
def __init__(self, src_file: TextIO, version_script: TextIO, arch: Arch,
api: int, llndk: bool, apex: bool) -> None:
self.src_file = src_file
self.version_script = version_script
self.arch = arch
self.api = api
self.llndk = llndk
self.apex = apex
def write(self, versions: Iterable[Version]) -> None:
"""Writes all symbol data to the output files."""
for version in versions:
self.write_version(version)
def write_version(self, version: Version) -> None:
"""Writes a single version block's data to the output files."""
if symbolfile.should_omit_version(version, self.arch, self.api,
self.llndk, self.apex):
return
section_versioned = symbolfile.symbol_versioned_in_api(
version.tags, self.api)
version_empty = True
pruned_symbols = []
for symbol in version.symbols:
if symbolfile.should_omit_symbol(symbol, self.arch, self.api,
self.llndk, self.apex):
continue
if symbolfile.symbol_versioned_in_api(symbol.tags, self.api):
version_empty = False
pruned_symbols.append(symbol)
if len(pruned_symbols) > 0:
if not version_empty and section_versioned:
self.version_script.write(version.name + ' {\n')
self.version_script.write(' global:\n')
for symbol in pruned_symbols:
emit_version = symbolfile.symbol_versioned_in_api(
symbol.tags, self.api)
if section_versioned and emit_version:
self.version_script.write(' ' + symbol.name + ';\n')
weak = ''
if 'weak' in symbol.tags:
weak = '__attribute__((weak)) '
if 'var' in symbol.tags:
self.src_file.write('{}int {} = 0;\n'.format(
weak, symbol.name))
else:
self.src_file.write('{}void {}() {{}}\n'.format(
weak, symbol.name))
if not version_empty and section_versioned:
base = '' if version.base is None else ' ' + version.base
self.version_script.write('}' + base + ';\n')
def parse_args() -> argparse.Namespace:
"""Parses and returns command line arguments."""
parser = argparse.ArgumentParser()
parser.add_argument('-v', '--verbose', action='count', default=0)
parser.add_argument(
'--api', required=True, help='API level being targeted.')
parser.add_argument(
'--arch', choices=symbolfile.ALL_ARCHITECTURES, required=True,
help='Architecture being targeted.')
parser.add_argument(
'--llndk', action='store_true', help='Use the LLNDK variant.')
parser.add_argument(
'--apex', action='store_true', help='Use the APEX variant.')
# https://github.com/python/mypy/issues/1317
# mypy has issues with using os.path.realpath as an argument here.
parser.add_argument(
'--api-map',
type=os.path.realpath, # type: ignore
required=True,
help='Path to the API level map JSON file.')
parser.add_argument(
'symbol_file',
type=os.path.realpath, # type: ignore
help='Path to symbol file.')
parser.add_argument(
'stub_src',
type=os.path.realpath, # type: ignore
help='Path to output stub source file.')
parser.add_argument(
'version_script',
type=os.path.realpath, # type: ignore
help='Path to output version script.')
return parser.parse_args()
def main() -> None:
"""Program entry point."""
args = parse_args()
with open(args.api_map) as map_file:
api_map = json.load(map_file)
api = symbolfile.decode_api_level(args.api, api_map)
verbose_map = (logging.WARNING, logging.INFO, logging.DEBUG)
verbosity = args.verbose
if verbosity > 2:
verbosity = 2
logging.basicConfig(level=verbose_map[verbosity])
with open(args.symbol_file) as symbol_file:
try:
versions = symbolfile.SymbolFileParser(symbol_file, api_map,
args.arch, api, args.llndk,
args.apex).parse()
except symbolfile.MultiplyDefinedSymbolError as ex:
sys.exit('{}: error: {}'.format(args.symbol_file, ex))
with open(args.stub_src, 'w') as src_file:
with open(args.version_script, 'w') as version_file:
generator = Generator(src_file, version_file, args.arch, api,
args.llndk, args.apex)
generator.write(versions)
if __name__ == '__main__':
main()
|
