#!/usr/bin/env python # # Copyright 2008 the V8 project authors. All rights reserved. # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are # met: # # * Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # * Redistributions in binary form must reproduce the above # copyright notice, this list of conditions and the following # disclaimer in the documentation and/or other materials provided # with the distribution. # * Neither the name of Google Inc. nor the names of its # contributors may be used to endorse or promote products derived # from this software without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # Usage: process-ticks.py <binary> <logfile> # # Where <binary> is the binary program name (eg, v8_shell.exe) and # <logfile> is the log file name (eg, v8.log). # # This tick processor expects to find a map file for the binary named # binary.map if the binary is named binary.exe. The tick processor # only works for statically linked executables - no information about # shared libraries is logged from v8 on Windows. import os, re, sys, tickprocessor class WindowsTickProcessor(tickprocessor.TickProcessor): def Unmangle(self, name): """Performs very simple unmangling of C++ names. Does not handle arguments and template arguments. The mangled names have the form: ?LookupInDescriptor@JSObject@internal@v8@@...arguments info... """ # Name is mangled if it starts with a question mark. is_mangled = re.match("^\?(.*)", name) if is_mangled: substrings = is_mangled.group(1).split('@') try: # The function name is terminated by two @s in a row. Find the # substrings that are part of the function name. index = substrings.index('') substrings = substrings[0:index] except ValueError: # If we did not find two @s in a row, the mangled name is not in # the format we expect and we give up. return name substrings.reverse() function_name = "::".join(substrings) return function_name return name def ParseMapFile(self, filename): """Parse map file and add symbol information to the cpp entries.""" # Locate map file. has_dot = re.match('^([a-zA-F0-9_-]*)[\.]?.*$', filename) if has_dot: map_file_name = has_dot.group(1) + '.map' try: map_file = open(map_file_name, 'rb') except IOError: sys.exit("Could not open map file: " + map_file_name) else: sys.exit("Could not find map file for executable: " + filename) try: max_addr = 0 min_addr = 2**30 # Process map file and search for function entries. row_regexp = re.compile(' 0001:[0-9a-fA-F]{8}\s*([_\?@$0-9a-zA-Z]*)\s*([0-9a-fA-F]{8}).*') for line in map_file: row = re.match(row_regexp, line) if row: addr = int(row.group(2), 16) if addr > max_addr: max_addr = addr if addr < min_addr: min_addr = addr mangled_name = row.group(1) name = self.Unmangle(mangled_name) self.cpp_entries.Insert(addr, tickprocessor.CodeEntry(addr, name)); i = min_addr # Mark the pages for which there are functions in the map file. while i < max_addr: page = i >> 12 self.vm_extent[page] = 1 i += 4096 finally: map_file.close() class WindowsCmdLineProcessor(tickprocessor.CmdLineProcessor): def __init__(self): super(WindowsCmdLineProcessor, self).__init__() self.binary_file = None def GetRequiredArgsNames(self): return 'binary log_file' def ProcessRequiredArgs(self, args): if len(args) != 2: self.PrintUsageAndExit() else: self.binary_file = args[0] self.log_file = args[1] def Main(): cmdline_processor = WindowsCmdLineProcessor() cmdline_processor.ProcessArguments() tickprocessor = WindowsTickProcessor() tickprocessor.ParseMapFile(cmdline_processor.binary_file) cmdline_processor.RunLogfileProcessing(tickprocessor) tickprocessor.PrintResults() if __name__ == '__main__': Main()