Caroline Tice | bf3d6f0 | 2016-10-04 13:58:01 -0700 | [diff] [blame] | 1 | #!/usr/bin/env python2 |
| 2 | """Verify that a ChromeOS sub-tree was built with a particular compiler""" |
| 3 | |
| 4 | from __future__ import print_function |
| 5 | |
| 6 | import argparse |
Caroline Tice | 34915f5 | 2016-12-07 11:57:49 -0800 | [diff] [blame] | 7 | import fnmatch |
Caroline Tice | bf3d6f0 | 2016-10-04 13:58:01 -0700 | [diff] [blame] | 8 | import os |
| 9 | import sys |
| 10 | |
| 11 | from cros_utils import command_executer |
| 12 | |
| 13 | COMPILERS = ['gcc', 'clang'] |
| 14 | |
| 15 | COMPILER_STRINGS = {'gcc': 'GNU C', 'clang': 'clang version'} |
| 16 | |
| 17 | ERR_NO_DEBUG_INFO = 1024 |
| 18 | |
| 19 | |
| 20 | def UsageError(parser, message): |
| 21 | """Output error message and help/usage info.""" |
| 22 | |
| 23 | print('ERROR: %s' % message) |
| 24 | parser.print_help() |
| 25 | sys.exit(0) |
| 26 | |
| 27 | |
| 28 | def CreateTmpDwarfFile(filename, dwarf_file, cmd_executer): |
| 29 | """Create temporary dwarfdump file, to be parsed later.""" |
| 30 | |
| 31 | cmd = ('readelf --debug-dump=info %s | grep -A5 DW_AT_producer > %s' % |
| 32 | (filename, dwarf_file)) |
| 33 | retval = cmd_executer.RunCommand(cmd, print_to_console=False) |
| 34 | return retval |
| 35 | |
| 36 | |
Caroline Tice | f6ef439 | 2017-04-06 17:16:05 -0700 | [diff] [blame] | 37 | def FindAllFiles(root_dir): |
Caroline Tice | bf3d6f0 | 2016-10-04 13:58:01 -0700 | [diff] [blame] | 38 | """Create a list of all the *.debug and *.dwp files to be checked.""" |
| 39 | |
| 40 | file_list = [] |
| 41 | tmp_list = [ |
| 42 | os.path.join(dirpath, f) |
Caroline Tice | f6ef439 | 2017-04-06 17:16:05 -0700 | [diff] [blame] | 43 | for dirpath, _, files in os.walk(root_dir) |
Caroline Tice | bf3d6f0 | 2016-10-04 13:58:01 -0700 | [diff] [blame] | 44 | for f in fnmatch.filter(files, '*.debug') |
| 45 | ] |
| 46 | for f in tmp_list: |
| 47 | if 'build-id' not in f: |
| 48 | file_list.append(f) |
| 49 | tmp_list = [ |
| 50 | os.path.join(dirpath, f) |
Caroline Tice | f6ef439 | 2017-04-06 17:16:05 -0700 | [diff] [blame] | 51 | for dirpath, _, files in os.walk(root_dir) |
Caroline Tice | bf3d6f0 | 2016-10-04 13:58:01 -0700 | [diff] [blame] | 52 | for f in fnmatch.filter(files, '*.dwp') |
| 53 | ] |
| 54 | file_list += tmp_list |
| 55 | return file_list |
| 56 | |
| 57 | |
| 58 | def VerifyArgs(compiler, filename, tmp_dir, root_dir, options, parser): |
| 59 | """Verify that the option values and combinations are valid.""" |
| 60 | |
| 61 | if options.filename and options.all_files: |
| 62 | UsageError(parser, 'Cannot use both --file and --all_files.') |
| 63 | if options.filename and options.root_dir: |
| 64 | UsageError(parser, 'Cannot use both --file and --root_dir.') |
| 65 | if options.all_files and not options.root_dir: |
| 66 | UsageError(parser, 'Missing --root_dir option.') |
| 67 | if options.root_dir and not options.all_files: |
| 68 | UsageError(parser, 'Missing --all_files option.') |
| 69 | if not options.filename and not options.all_files: |
| 70 | UsageError(parser, 'Must specify either --file or --all_files.') |
| 71 | |
| 72 | # Verify that the values specified are valid. |
| 73 | if filename: |
| 74 | if not os.path.exists(filename): |
| 75 | UsageError(parser, 'Cannot find %s' % filename) |
| 76 | compiler = options.compiler.lower() |
| 77 | if compiler not in COMPILERS: |
| 78 | UsageError(parser, '%s is not a valid compiler (gcc or clang).' % compiler) |
| 79 | if root_dir and not os.path.exists(root_dir): |
| 80 | UsageError(parser, '%s does not exist.' % root_dir) |
| 81 | if not os.path.exists(tmp_dir): |
| 82 | os.makedirs(tmp_dir) |
| 83 | |
| 84 | |
| 85 | def CheckFile(filename, compiler, tmp_dir, options, cmd_executer): |
| 86 | """Verify the information in a single file.""" |
| 87 | |
| 88 | print('Checking %s' % filename) |
| 89 | # Verify that file contains debug information. |
| 90 | cmd = 'readelf -SW %s | grep debug_info' % filename |
| 91 | retval = cmd_executer.RunCommand(cmd, print_to_console=False) |
| 92 | if retval != 0: |
| 93 | print('No debug info in this file. Unable to verify compiler.') |
| 94 | # There's no debug info in this file, so skip it. |
| 95 | return ERR_NO_DEBUG_INFO |
| 96 | |
| 97 | tmp_name = os.path.basename(filename) + '.dwarf' |
| 98 | dwarf_file = os.path.join(tmp_dir, tmp_name) |
| 99 | status = CreateTmpDwarfFile(filename, dwarf_file, cmd_executer) |
| 100 | |
| 101 | if status != 0: |
Caroline Tice | f6ef439 | 2017-04-06 17:16:05 -0700 | [diff] [blame] | 102 | print('Unable to create dwarf file for %s (status: %d).' % (filename, |
| 103 | status)) |
Caroline Tice | bf3d6f0 | 2016-10-04 13:58:01 -0700 | [diff] [blame] | 104 | return status |
| 105 | |
| 106 | comp_str = COMPILER_STRINGS[compiler] |
| 107 | |
| 108 | retval = 0 |
| 109 | with open(dwarf_file, 'r') as in_file: |
| 110 | lines = in_file.readlines() |
| 111 | looking_for_name = False |
| 112 | for line in lines: |
| 113 | if 'DW_AT_producer' in line: |
| 114 | looking_for_name = False |
| 115 | if 'GNU AS' in line: |
| 116 | continue |
| 117 | if comp_str not in line: |
| 118 | looking_for_name = True |
| 119 | retval = 1 |
| 120 | elif looking_for_name: |
| 121 | if 'DW_AT_name' in line: |
| 122 | words = line.split(':') |
| 123 | bad_file = words[-1] |
Caroline Tice | f6ef439 | 2017-04-06 17:16:05 -0700 | [diff] [blame] | 124 | print('FAIL: %s was not compiled with %s.' % (bad_file.rstrip(), |
| 125 | compiler)) |
Caroline Tice | bf3d6f0 | 2016-10-04 13:58:01 -0700 | [diff] [blame] | 126 | looking_for_name = False |
| 127 | elif 'DW_TAG_' in line: |
| 128 | looking_for_name = False |
| 129 | |
| 130 | if not options.keep_file: |
| 131 | os.remove(dwarf_file) |
| 132 | |
| 133 | return retval |
| 134 | |
| 135 | |
| 136 | def Main(argv): |
| 137 | |
| 138 | cmd_executer = command_executer.GetCommandExecuter() |
| 139 | parser = argparse.ArgumentParser() |
| 140 | parser.add_argument( |
| 141 | '--file', dest='filename', help='Name of file to be verified.') |
| 142 | parser.add_argument( |
| 143 | '--compiler', |
| 144 | dest='compiler', |
| 145 | required=True, |
| 146 | help='Desired compiler (gcc or clang)') |
| 147 | parser.add_argument( |
| 148 | '--tmp_dir', |
| 149 | dest='tmp_dir', |
| 150 | help='Directory in which to put dwarf dump file.' |
| 151 | ' Defaults to /tmp') |
| 152 | parser.add_argument( |
| 153 | '--keep_file', |
| 154 | dest='keep_file', |
| 155 | default=False, |
| 156 | action='store_true', |
| 157 | help='Do not delete dwarf file when done.') |
| 158 | parser.add_argument( |
| 159 | '--all_files', |
| 160 | dest='all_files', |
| 161 | default=False, |
| 162 | action='store_true', |
| 163 | help='Find and check ALL .debug/.dwp files ' |
| 164 | 'in subtree. Must be used with --root_dir ' |
| 165 | '(and NOT with --file).') |
| 166 | parser.add_argument( |
| 167 | '--root_dir', |
| 168 | dest='root_dir', |
| 169 | help='Root of subtree in which to look for ' |
| 170 | 'files. Must be used with --all_files, and' |
| 171 | ' not with --file.') |
| 172 | |
| 173 | options = parser.parse_args(argv) |
| 174 | |
| 175 | compiler = options.compiler |
| 176 | filename = None |
| 177 | if options.filename: |
| 178 | filename = os.path.realpath(os.path.expanduser(options.filename)) |
| 179 | tmp_dir = '/tmp' |
| 180 | if options.tmp_dir: |
| 181 | tmp_dir = os.path.realpath(os.path.expanduser(options.tmp_dir)) |
| 182 | root_dir = None |
| 183 | if options.root_dir: |
| 184 | root_dir = os.path.realpath(os.path.expanduser(options.root_dir)) |
| 185 | |
| 186 | VerifyArgs(compiler, filename, tmp_dir, root_dir, options, parser) |
| 187 | |
| 188 | file_list = [] |
| 189 | if filename: |
| 190 | file_list.append(filename) |
| 191 | else: |
Caroline Tice | f6ef439 | 2017-04-06 17:16:05 -0700 | [diff] [blame] | 192 | file_list = FindAllFiles(root_dir) |
Caroline Tice | bf3d6f0 | 2016-10-04 13:58:01 -0700 | [diff] [blame] | 193 | |
| 194 | bad_files = [] |
| 195 | unknown_files = [] |
| 196 | all_pass = True |
| 197 | for f in file_list: |
| 198 | result = CheckFile(f, compiler, tmp_dir, options, cmd_executer) |
| 199 | if result == ERR_NO_DEBUG_INFO: |
| 200 | unknown_files.append(f) |
| 201 | all_pass = False |
| 202 | elif result != 0: |
| 203 | bad_files.append(f) |
| 204 | all_pass = False |
| 205 | |
| 206 | if all_pass: |
| 207 | print('\n\nSUCCESS: All compilation units were compiled with %s.\n' % |
| 208 | compiler) |
| 209 | return 0 |
| 210 | else: |
| 211 | if len(bad_files) == 0: |
| 212 | print( |
| 213 | '\n\n*Mostly* SUCCESS: All files that could be checked were compiled ' |
| 214 | 'with %s.' % compiler) |
| 215 | print( |
| 216 | '\n\nUnable to verify the following files (no debug info in them):\n') |
| 217 | for f in unknown_files: |
| 218 | print(f) |
| 219 | else: |
| 220 | print('\n\nFAILED: The following files were not compiled with %s:\n' % |
| 221 | compiler) |
| 222 | for f in bad_files: |
| 223 | print(f) |
| 224 | if len(unknown_files) > 0: |
Caroline Tice | f6ef439 | 2017-04-06 17:16:05 -0700 | [diff] [blame] | 225 | print('\n\nUnable to verify the following files (no debug info in ' |
| 226 | 'them):\n') |
Caroline Tice | bf3d6f0 | 2016-10-04 13:58:01 -0700 | [diff] [blame] | 227 | for f in unknown_files: |
| 228 | print(f) |
| 229 | return 1 |
| 230 | |
| 231 | |
| 232 | if __name__ == '__main__': |
| 233 | sys.exit(Main(sys.argv[1:])) |