Sharjeel Khan | cc17363 | 2023-08-08 21:04:41 +0000 | [diff] [blame] | 1 | #!/usr/bin/env python3 |
| 2 | # |
| 3 | # Copyright (C) 2023 The Android Open Source Project |
| 4 | # |
| 5 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | # you may not use this file except in compliance with the License. |
| 7 | # You may obtain a copy of the License at |
| 8 | # |
| 9 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | # |
| 11 | # Unless required by applicable law or agreed to in writing, software |
| 12 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | # See the License for the specific language governing permissions and |
| 15 | # limitations under the License. |
| 16 | # |
| 17 | # Sample Usage: |
| 18 | # $ python3 create_orderfile.py --profile-file ../orderfiles/test/example.prof --mapping-file ../orderfiles/test/example-mapping.txt |
| 19 | # |
| 20 | # Try '-h' for a full list of command line arguments. |
| 21 | |
| 22 | import argparse |
| 23 | import orderfile_utils |
| 24 | |
| 25 | def parse_args(): |
| 26 | """Parses and returns command line arguments.""" |
| 27 | parser = argparse.ArgumentParser(prog="create_orderfile", |
| 28 | description="Create orderfile from profile file and mapping file") |
| 29 | |
| 30 | parser.add_argument( |
| 31 | "--profile-file", |
| 32 | required=True, |
| 33 | help="Parsed profile file that represents the order of the symbol execution") |
| 34 | |
| 35 | parser.add_argument( |
| 36 | "--mapping-file", |
| 37 | required=True, |
| 38 | help="Mapped file that provides the mapping between MD5 hash and symbol name") |
| 39 | |
| 40 | parser.add_argument( |
| 41 | "--output", |
| 42 | default="default.orderfile", |
| 43 | help="Provide the output file name for the order file. Default Name: default.orderfile") |
| 44 | |
| 45 | parser.add_argument( |
| 46 | "--denylist", |
| 47 | default="", |
| 48 | help=f"Exclude symbols based on a symbol-per-line file with @ or comma separarted values within a quotation." |
| 49 | f"For example, you can say @file.txt or 'main,bar,foo'") |
| 50 | |
| 51 | parser.add_argument( |
| 52 | "--last-symbol", |
| 53 | help=f"Create an order file until the passed last symbol and ignore the symbols after it." |
| 54 | f"Useful if you want an order file only for startup so you should pass the last startup symbol." |
| 55 | f"Last-symbol has priority over leftover so we will output until the last symbol and ignore the leftover flag.") |
| 56 | |
| 57 | parser.add_argument( |
| 58 | "--leftover", |
| 59 | action='store_true', |
| 60 | default=False, |
| 61 | help="Add the symbols seen in mapping file but not in profile file at the end") |
| 62 | |
| 63 | return parser.parse_args() |
| 64 | |
| 65 | def main(): |
| 66 | args = parse_args() |
| 67 | |
| 68 | symbols = [] |
| 69 | mapping = {} |
| 70 | seen = set() |
| 71 | denylist = orderfile_utils.parse_set(args.denylist) |
| 72 | |
| 73 | # Load the MD5 hash mappings of the symbols. |
| 74 | with open(args.mapping_file, "r") as f: |
| 75 | for line in f: |
| 76 | line = line.strip().split() |
| 77 | mapping[line[1]] = line[2] |
| 78 | |
| 79 | # Parse the profile file |
| 80 | with open(args.profile_file, "r") as f: |
| 81 | for line in f: |
| 82 | line = line.strip().split() |
| 83 | |
| 84 | # Every line should have 2 MD5 hashes in reverse order (little Endian) |
| 85 | # so we need to reverse them to get the actual md5 hashes |
| 86 | if len(line) >= 8: |
| 87 | md5_1_b_list = line[1:9] |
| 88 | md5_2_b_list = line[9:17] |
| 89 | |
| 90 | md5_1_b_list.reverse() |
| 91 | md5_2_b_list.reverse() |
| 92 | |
| 93 | md5_1 = "".join(md5_1_b_list) |
| 94 | md5_2 = "".join(md5_2_b_list) |
| 95 | |
| 96 | if(md5_1 in mapping): |
| 97 | symbol_1 = mapping[md5_1] |
| 98 | seen.add(symbol_1) |
| 99 | |
| 100 | if symbol_1 not in denylist: |
| 101 | symbols.append(symbol_1) |
| 102 | |
| 103 | if(md5_2 in mapping): |
| 104 | symbol_2 = mapping[md5_2] |
| 105 | seen.add(symbol_2) |
| 106 | |
| 107 | if symbol_2 not in denylist: |
| 108 | symbols.append(symbol_2) |
| 109 | |
| 110 | # Functions in the mapping but not seen in the partial order. |
| 111 | # If you want to add them, you can use the leftover flag. |
| 112 | # Note: You can only use the leftover flag if the last-symbol flag was not passed |
| 113 | if args.leftover and args.last_symbol != None: |
| 114 | for md5 in mapping: |
| 115 | if mapping[md5] not in seen: |
| 116 | symbols.append(mapping[md5]) |
| 117 | |
| 118 | # Write it to output file |
| 119 | with open(args.output, "w") as f: |
| 120 | for symbol in symbols: |
| 121 | f.write(symbol+"\n") |
| 122 | |
| 123 | # If we are at the last-symbol, we do not write the rest of the symbols |
| 124 | if symbol == args.last_symbol: |
| 125 | break |
| 126 | |
| 127 | if __name__ == '__main__': |
| 128 | main() |