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134 lines
4.8 KiB
Python
Executable File
134 lines
4.8 KiB
Python
Executable File
#!/usr/bin/python
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# vim:sw=4:ts=4:et:
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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# This script uses |atos| to post-process the entries produced by
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# NS_FormatCodeAddress(), which on Mac often lack a file name and a line
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# number.
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import subprocess
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import sys
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import re
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import os
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import pty
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import termios
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class unbufferedLineConverter:
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"""
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Wrap a child process that responds to each line of input with one line of
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output. Uses pty to trick the child into providing unbuffered output.
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"""
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def __init__(self, command, args = []):
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pid, fd = pty.fork()
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if pid == 0:
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# We're the child. Transfer control to command.
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os.execvp(command, [command] + args)
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else:
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# Disable echoing.
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attr = termios.tcgetattr(fd)
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attr[3] = attr[3] & ~termios.ECHO
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termios.tcsetattr(fd, termios.TCSANOW, attr)
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# Set up a file()-like interface to the child process
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self.r = os.fdopen(fd, "r", 1)
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self.w = os.fdopen(os.dup(fd), "w", 1)
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def convert(self, line):
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self.w.write(line + "\n")
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return self.r.readline().rstrip("\r\n")
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@staticmethod
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def test():
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assert unbufferedLineConverter("rev").convert("123") == "321"
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assert unbufferedLineConverter("cut", ["-c3"]).convert("abcde") == "c"
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print "Pass"
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def separate_debug_file_for(file):
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return None
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address_adjustments = {}
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def address_adjustment(file):
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if not file in address_adjustments:
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result = None
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otool = subprocess.Popen(["otool", "-l", file], stdout=subprocess.PIPE)
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while True:
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line = otool.stdout.readline()
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if line == "":
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break
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if line == " segname __TEXT\n":
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line = otool.stdout.readline()
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if not line.startswith(" vmaddr "):
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raise StandardError("unexpected otool output")
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result = int(line[10:], 16)
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break
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otool.stdout.close()
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if result is None:
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raise StandardError("unexpected otool output")
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address_adjustments[file] = result
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return address_adjustments[file]
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atoses = {}
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def addressToSymbol(file, address):
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converter = None
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if not file in atoses:
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debug_file = separate_debug_file_for(file) or file
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converter = unbufferedLineConverter('/usr/bin/xcrun', ['atos', '-arch', 'x86_64', '-o', debug_file])
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atoses[file] = converter
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else:
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converter = atoses[file]
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return converter.convert("0x%X" % address)
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cxxfilt_proc = None
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def cxxfilt(sym):
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if cxxfilt_proc is None:
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# --no-strip-underscores because atos already stripped the underscore
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globals()["cxxfilt_proc"] = subprocess.Popen(['c++filt',
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'--no-strip-underscores',
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'--format', 'gnu-v3'],
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE)
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cxxfilt_proc.stdin.write(sym + "\n")
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return cxxfilt_proc.stdout.readline().rstrip("\n")
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# Matches lines produced by NS_FormatCodeAddress().
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line_re = re.compile("^(.*#\d+: )(.+)\[(.+) \+(0x[0-9A-Fa-f]+)\](.*)$")
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atos_name_re = re.compile("^(.+) \(in ([^)]+)\) \((.+)\)$")
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def fixSymbols(line):
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result = line_re.match(line)
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if result is not None:
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(before, fn, file, address, after) = result.groups()
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address = int(address, 16)
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if os.path.exists(file) and os.path.isfile(file):
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address += address_adjustment(file)
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info = addressToSymbol(file, address)
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# atos output seems to have three forms:
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# address
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# address (in foo.dylib)
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# symbol (in foo.dylib) (file:line)
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name_result = atos_name_re.match(info)
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if name_result is not None:
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# Print the first two forms as-is, and transform the third
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(name, library, fileline) = name_result.groups()
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# atos demangles, but occasionally it fails. cxxfilt can mop
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# up the remaining cases(!), which will begin with '_Z'.
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if (name.startswith("_Z")):
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name = cxxfilt(name)
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info = "%s (%s, in %s)" % (name, fileline, library)
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nl = '\n' if line[-1] == '\n' else ''
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return before + info + after + nl
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else:
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sys.stderr.write("Warning: File \"" + file + "\" does not exist.\n")
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return line
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else:
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return line
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if __name__ == "__main__":
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for line in sys.stdin:
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sys.stdout.write(fixSymbols(line))
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