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1#!/usr/bin/env python
2
3"""
4Run lldb disassembler on all the binaries specified by a combination of root dir
5and path pattern.
6"""
7
8import os, sys, subprocess
9import re
10from optparse import OptionParser
11
12# The directory of this Python script as well as the lldb-disasm.py workhorse.
13scriptPath = None
14
15# The root directory for the SDK symbols.
16root_dir = None
17
18# The regular expression pattern to match the desired pathname to the binaries.
19path_pattern = None
20
21# And the re-compiled regular expression object.
22path_regexp = None
23
24# If specified, number of symbols to disassemble for each qualified binary.
25num_symbols = -1
26
27# Command template of the invocation of lldb disassembler.
28template = '%s/lldb-disasm.py -C "platform select remote-ios" -o "-n" -q -e %s -n %s'
29
30# Regular expression for detecting file output for Mach-o binary.
31mach_o = re.compile('\sMach-O.+binary')
32def isbinary(path):
33    file_output = subprocess.Popen(["file", path],
34                                   stdout=subprocess.PIPE).stdout.read()
35    return (mach_o.search(file_output) is not None)
36
37def walk_and_invoke(sdk_root, path_regexp, suffix, num_symbols):
38    """Look for matched file and invoke lldb disassembly on it."""
39    global scriptPath
40
41    for root, dirs, files in os.walk(sdk_root, topdown=False):
42        for name in files:
43            path = os.path.join(root, name)
44
45            # We're not interested in .h file.
46            if name.endswith(".h"):
47                continue
48            # Neither a symbolically linked file.
49            if os.path.islink(path):
50                continue
51
52            # We'll be pattern matching based on the path relative to the SDK root.
53            replaced_path = path.replace(root_dir, "", 1)
54            # Check regular expression match for the replaced path.
55            if not path_regexp.search(replaced_path):
56                continue
57            # If a suffix is specified, check it, too.
58            if suffix and not name.endswith(suffix):
59                continue
60            if not isbinary(path):
61                continue
62
63            command = template % (scriptPath, path, num_symbols if num_symbols > 0 else 1000)
64            print "Running %s" % (command)
65            os.system(command)
66
67def main():
68    """Read the root dir and the path spec, invoke lldb-disasm.py on the file."""
69    global scriptPath
70    global root_dir
71    global path_pattern
72    global path_regexp
73    global num_symbols
74
75    scriptPath = sys.path[0]
76
77    parser = OptionParser(usage="""\
78Run lldb disassembler on all the binaries specified by a combination of root dir
79and path pattern.
80""")
81    parser.add_option('-r', '--root-dir',
82                      type='string', action='store',
83                      dest='root_dir',
84                      help='Mandatory: the root directory for the SDK symbols.')
85    parser.add_option('-p', '--path-pattern',
86                      type='string', action='store',
87                      dest='path_pattern',
88                      help='Mandatory: regular expression pattern for the desired binaries.')
89    parser.add_option('-s', '--suffix',
90                      type='string', action='store', default=None,
91                      dest='suffix',
92                      help='Specify the suffix of the binaries to look for.')
93    parser.add_option('-n', '--num-symbols',
94                      type='int', action='store', default=-1,
95                      dest='num_symbols',
96                      help="""The number of symbols to disassemble, if specified.""")
97
98
99    opts, args = parser.parse_args()
100    if not opts.root_dir or not opts.path_pattern:
101        parser.print_help()
102        sys.exit(1)
103
104    # Sanity check the root directory.
105    root_dir = opts.root_dir
106    root_dir = os.path.abspath(root_dir)
107    if not os.path.isdir(root_dir):
108        parser.print_help()
109        sys.exit(1)
110
111    path_pattern = opts.path_pattern
112    path_regexp = re.compile(path_pattern)
113    suffix = opts.suffix
114    num_symbols = opts.num_symbols
115
116    print "Root directory for SDK symbols:", root_dir
117    print "Regular expression for the binaries:", path_pattern
118    print "Suffix of the binaries to look for:", suffix
119    print "num of symbols to disassemble:", num_symbols
120
121    walk_and_invoke(root_dir, path_regexp, suffix, num_symbols)
122
123
124if __name__ == '__main__':
125    main()
126