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234 lines
6.8 KiB
234 lines
6.8 KiB
#!/usr/bin/env python2 |
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"""Verify that a ChromeOS sub-tree was built with a particular compiler""" |
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from __future__ import print_function |
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import argparse |
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import fnmatch |
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import os |
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import sys |
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from cros_utils import command_executer |
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COMPILERS = ['gcc', 'clang'] |
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COMPILER_STRINGS = {'gcc': 'GNU C', 'clang': 'clang version'} |
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ERR_NO_DEBUG_INFO = 1024 |
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def UsageError(parser, message): |
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"""Output error message and help/usage info.""" |
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print('ERROR: %s' % message) |
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parser.print_help() |
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sys.exit(0) |
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def CreateTmpDwarfFile(filename, dwarf_file, cmd_executer): |
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"""Create temporary dwarfdump file, to be parsed later.""" |
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cmd = ('readelf --debug-dump=info %s | grep -A5 DW_AT_producer > %s' % |
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(filename, dwarf_file)) |
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retval = cmd_executer.RunCommand(cmd, print_to_console=False) |
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return retval |
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def FindAllFiles(root_dir, cmd_executer): |
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"""Create a list of all the *.debug and *.dwp files to be checked.""" |
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file_list = [] |
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tmp_list = [ |
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os.path.join(dirpath, f) |
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for dirpath, dirnames, files in os.walk(root_dir) |
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for f in fnmatch.filter(files, '*.debug') |
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] |
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for f in tmp_list: |
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if 'build-id' not in f: |
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file_list.append(f) |
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tmp_list = [ |
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os.path.join(dirpath, f) |
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for dirpath, dirnames, files in os.walk(root_dir) |
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for f in fnmatch.filter(files, '*.dwp') |
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] |
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file_list += tmp_list |
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return file_list |
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def VerifyArgs(compiler, filename, tmp_dir, root_dir, options, parser): |
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"""Verify that the option values and combinations are valid.""" |
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if options.filename and options.all_files: |
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UsageError(parser, 'Cannot use both --file and --all_files.') |
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if options.filename and options.root_dir: |
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UsageError(parser, 'Cannot use both --file and --root_dir.') |
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if options.all_files and not options.root_dir: |
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UsageError(parser, 'Missing --root_dir option.') |
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if options.root_dir and not options.all_files: |
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UsageError(parser, 'Missing --all_files option.') |
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if not options.filename and not options.all_files: |
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UsageError(parser, 'Must specify either --file or --all_files.') |
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# Verify that the values specified are valid. |
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if filename: |
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if not os.path.exists(filename): |
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UsageError(parser, 'Cannot find %s' % filename) |
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compiler = options.compiler.lower() |
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if compiler not in COMPILERS: |
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UsageError(parser, '%s is not a valid compiler (gcc or clang).' % compiler) |
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if root_dir and not os.path.exists(root_dir): |
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UsageError(parser, '%s does not exist.' % root_dir) |
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if not os.path.exists(tmp_dir): |
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os.makedirs(tmp_dir) |
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def CheckFile(filename, compiler, tmp_dir, options, cmd_executer): |
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"""Verify the information in a single file.""" |
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print('Checking %s' % filename) |
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# Verify that file contains debug information. |
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cmd = 'readelf -SW %s | grep debug_info' % filename |
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retval = cmd_executer.RunCommand(cmd, print_to_console=False) |
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if retval != 0: |
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print('No debug info in this file. Unable to verify compiler.') |
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# There's no debug info in this file, so skip it. |
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return ERR_NO_DEBUG_INFO |
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tmp_name = os.path.basename(filename) + '.dwarf' |
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dwarf_file = os.path.join(tmp_dir, tmp_name) |
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status = CreateTmpDwarfFile(filename, dwarf_file, cmd_executer) |
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if status != 0: |
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print('Unable to create dwarf file for %s (status: %d).' % |
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(filename, status)) |
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return status |
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comp_str = COMPILER_STRINGS[compiler] |
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retval = 0 |
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with open(dwarf_file, 'r') as in_file: |
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lines = in_file.readlines() |
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looking_for_name = False |
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for line in lines: |
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if 'DW_AT_producer' in line: |
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looking_for_name = False |
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if 'GNU AS' in line: |
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continue |
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if comp_str not in line: |
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looking_for_name = True |
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retval = 1 |
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elif looking_for_name: |
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if 'DW_AT_name' in line: |
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words = line.split(':') |
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bad_file = words[-1] |
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print('FAIL: %s was not compiled with %s.' % |
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(bad_file.rstrip(), compiler)) |
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looking_for_name = False |
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elif 'DW_TAG_' in line: |
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looking_for_name = False |
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if not options.keep_file: |
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os.remove(dwarf_file) |
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return retval |
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def Main(argv): |
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cmd_executer = command_executer.GetCommandExecuter() |
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parser = argparse.ArgumentParser() |
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parser.add_argument( |
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'--file', dest='filename', help='Name of file to be verified.') |
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parser.add_argument( |
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'--compiler', |
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dest='compiler', |
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required=True, |
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help='Desired compiler (gcc or clang)') |
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parser.add_argument( |
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'--tmp_dir', |
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dest='tmp_dir', |
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help='Directory in which to put dwarf dump file.' |
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' Defaults to /tmp') |
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parser.add_argument( |
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'--keep_file', |
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dest='keep_file', |
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default=False, |
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action='store_true', |
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help='Do not delete dwarf file when done.') |
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parser.add_argument( |
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'--all_files', |
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dest='all_files', |
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default=False, |
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action='store_true', |
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help='Find and check ALL .debug/.dwp files ' |
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'in subtree. Must be used with --root_dir ' |
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'(and NOT with --file).') |
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parser.add_argument( |
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'--root_dir', |
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dest='root_dir', |
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help='Root of subtree in which to look for ' |
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'files. Must be used with --all_files, and' |
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' not with --file.') |
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options = parser.parse_args(argv) |
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compiler = options.compiler |
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filename = None |
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if options.filename: |
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filename = os.path.realpath(os.path.expanduser(options.filename)) |
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tmp_dir = '/tmp' |
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if options.tmp_dir: |
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tmp_dir = os.path.realpath(os.path.expanduser(options.tmp_dir)) |
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root_dir = None |
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if options.root_dir: |
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root_dir = os.path.realpath(os.path.expanduser(options.root_dir)) |
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VerifyArgs(compiler, filename, tmp_dir, root_dir, options, parser) |
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file_list = [] |
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if filename: |
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file_list.append(filename) |
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else: |
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file_list = FindAllFiles(root_dir, cmd_executer) |
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bad_files = [] |
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unknown_files = [] |
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all_pass = True |
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for f in file_list: |
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result = CheckFile(f, compiler, tmp_dir, options, cmd_executer) |
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if result == ERR_NO_DEBUG_INFO: |
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unknown_files.append(f) |
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all_pass = False |
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elif result != 0: |
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bad_files.append(f) |
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all_pass = False |
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if all_pass: |
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print('\n\nSUCCESS: All compilation units were compiled with %s.\n' % |
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compiler) |
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return 0 |
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else: |
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if len(bad_files) == 0: |
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print( |
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'\n\n*Mostly* SUCCESS: All files that could be checked were compiled ' |
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'with %s.' % compiler) |
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print( |
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'\n\nUnable to verify the following files (no debug info in them):\n') |
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for f in unknown_files: |
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print(f) |
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else: |
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print('\n\nFAILED: The following files were not compiled with %s:\n' % |
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compiler) |
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for f in bad_files: |
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print(f) |
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if len(unknown_files) > 0: |
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print( |
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'\n\nUnable to verify the following files (no debug info in them):\n' |
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) |
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for f in unknown_files: |
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print(f) |
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return 1 |
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if __name__ == '__main__': |
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sys.exit(Main(sys.argv[1:]))
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