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
|
import argparse
import sys, os
import base64
import hashlib
import tempfile
import shutil
import subprocess
from collections import namedtuple
def call(cmd, cwd=None, env=None):
return subprocess.check_output(cmd, stdin=None, stderr=subprocess.STDOUT, cwd=cwd, env=env)
class LLVMResourceInserter:
def __init__(self, args, obj_output):
self.cxx = args.compiler
self.objcopy = args.objcopy
self.rescompiler = args.rescompiler
self.compressor = args.compressor
self.obj_out = obj_output
has_target = args.target or args.target != '__unknown_target__'
self.target_flags = [f"--target={args.target}"] if has_target else []
seed = os.path.basename(obj_output)
self.mangler = lambda key: 'R' + hashlib.sha256((seed + key).encode()).hexdigest()
self.tmpdir = tempfile.mkdtemp()
def __enter__(self):
return self
def __exit__(self, *_):
shutil.rmtree(self.tmpdir)
PackedArgs = namedtuple("PackedArgs", ["infile_path", "comressed_file_path", "symbol_name"])
def _insert_files(self, infos: list[PackedArgs], output_obj: str) -> None:
if len(infos) == 0:
return
# Compress resources
cmd = [self.compressor, "--compress-only"]
for inserted_file, compressed_file, _ in infos:
cmd.extend([inserted_file, compressed_file])
call(cmd)
# Put resources into .o file
infos = [(zipped_file, os.path.getsize(zipped_file), symbol_name) for (_, zipped_file, symbol_name) in infos]
cmd = [self.objcopy]
# NOTE: objcopy does not distinguish the order of arguments.
for fname, fsize, sym in infos:
section_name = f'.rodata.{sym}'
cmd.extend(
[
f'--add-section={section_name}={fname}',
f'--set-section-flags={section_name}=readonly',
f'--add-symbol={sym}={section_name}:0,global',
f'--add-symbol={sym}_end={section_name}:{fsize},global',
]
)
cmd.extend([output_obj])
call(cmd)
@staticmethod
def flat_merge_cpp(outs, output):
if len(outs) == 1:
shutil.move(outs[0], output)
return
with open(output, 'w') as fout:
for fname in outs:
with open(fname, 'r') as fin:
shutil.copyfileobj(fin, fout)
return
def insert_resources(self, kv_files, kv_strings):
kv_files = list(kv_files)
# Generate resource registration cpp code & compile it
with tempfile.NamedTemporaryFile(suffix='.cc') as dummy_src:
cmd = [self.rescompiler, dummy_src.name, '--use-sections']
for path, key in kv_files + list(('-', k) for k in kv_strings):
if path != '-':
path = self.mangler(key)
cmd.extend([path, key])
call(cmd)
# Compile
call([self.cxx, dummy_src.name, *self.target_flags, '-c', '-o', self.obj_out])
# Put files
infos = [[]]
estimated_cmd_len = 0
LIMIT = 6000
for idx, (path, key) in enumerate(kv_files):
packed_args = (path, os.path.join(self.tmpdir, f'{idx}.zstd'), self.mangler(key))
infos[-1].append(packed_args)
estimated_cmd_len += len(path)
if estimated_cmd_len > LIMIT:
infos.append([])
estimated_cmd_len = 0
for packed_args in infos:
self._insert_files(packed_args, self.obj_out)
return self.obj_out
def parse_args():
parser = argparse.ArgumentParser()
parser.add_argument('--compiler', required=True)
parser.add_argument('--objcopy', required=True)
parser.add_argument('--compressor', required=True)
parser.add_argument('--rescompiler', required=True)
parser.add_argument('--output_obj', required=True)
parser.add_argument('--inputs', nargs='+', required=False, default=[])
parser.add_argument('--keys', nargs='+', required=False, default=[])
parser.add_argument('--kvs', nargs='+', required=False, default=[])
parser.add_argument('--target', required=True)
args = parser.parse_args()
# Decode hex to original string
args.keys = list(base64.b64decode(it).decode("utf-8") for it in args.keys)
return args, args.inputs, args.keys
def main():
args, inputs, keys = parse_args()
with LLVMResourceInserter(args, args.output_obj) as inserter:
inserter.insert_resources(zip(inputs, keys), args.kvs)
return
if __name__ == '__main__':
main()
|
