gecko-dev/tools/rb/fix_stack_using_bpsyms.py

161 lines
5.9 KiB
Python
Executable File

#!/usr/bin/env python
# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
#
# The Original Code is fix_stack_using_bpsyms.py.
#
# The Initial Developer of the Original Code is the Mozilla Foundation.
# Portions created by the Initial Developer are Copyright (C) 2010
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Jesse Ruderman <jruderman@gmail.com>
# L. David Baron <dbaron@dbaron.org>
# Ted Mielczarek <ted.mielczarek@gmail.com>
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
# of those above. If you wish to allow use of your version of this file only
# under the terms of either the GPL or the LGPL, and not to allow others to
# use your version of this file under the terms of the MPL, indicate your
# decision by deleting the provisions above and replace them with the notice
# and other provisions required by the GPL or the LGPL. If you do not delete
# the provisions above, a recipient may use your version of this file under
# the terms of any one of the MPL, the GPL or the LGPL.
#
# ***** END LICENSE BLOCK *****
from __future__ import with_statement
import sys
import os
import re
import bisect
def prettyFileName(name):
if name.startswith("../") or name.startswith("..\\"):
# dom_quickstubs.cpp and many .h files show up with relative paths that are useless
# and/or don't correspond to the layout of the source tree.
return os.path.basename(name) + ":"
elif name.startswith("hg:"):
(junk, repo, path, rev) = name.split(":")
# We could construct an hgweb URL with /file/ or /annotate/, like this:
# return "http://%s/annotate/%s/%s#l" % (repo, rev, path)
return path + ":"
return name + ":"
class readSymbolFile:
def __init__(self, fn):
addrs = [] # list of addresses, which will be sorted once we're done initializing
funcs = {} # hash: address --> (function name + possible file/line)
files = {} # hash: filenum (string) --> prettified filename ready to have a line number appended
with open(fn) as f:
for line in f:
line = line.rstrip()
# http://code.google.com/p/google-breakpad/wiki/SymbolFiles
if line.startswith("FUNC "):
# FUNC <address> <size> <stack_param_size> <name>
(junk, rva, size, ss, name) = line.split(None, 4)
rva = int(rva,16)
funcs[rva] = name
addrs.append(rva)
lastFuncName = name
elif line.startswith("PUBLIC "):
# PUBLIC <address> <stack_param_size> <name>
(junk, rva, ss, name) = line.split(None, 3)
rva = int(rva,16)
funcs[rva] = name
addrs.append(rva)
elif line.startswith("FILE "):
# FILE <number> <name>
(junk, filenum, name) = line.split(None, 2)
files[filenum] = prettyFileName(name)
elif line[0] in "0123456789abcdef":
# This is one of the "line records" corresponding to the last FUNC record
# <address> <size> <line> <filenum>
(rva, size, line, filenum) = line.split(None)
rva = int(rva,16)
file = files[filenum]
name = lastFuncName + " [" + file + line + "]"
funcs[rva] = name
addrs.append(rva)
# skip everything else
#print "Loaded %d functions from symbol file %s" % (len(funcs), os.path.basename(fn))
self.addrs = sorted(addrs)
self.funcs = funcs
def addrToSymbol(self, address):
i = bisect.bisect(self.addrs, address) - 1
if i > 0:
#offset = address - self.addrs[i]
return self.funcs[self.addrs[i]]
else:
return ""
def guessSymbolFile(fn, symbolsDir):
"""Guess a symbol file based on an object file's basename, ignoring the path and UUID."""
fn = os.path.basename(fn)
d1 = os.path.join(symbolsDir, fn)
if not os.path.exists(d1):
return None
uuids = os.listdir(d1)
if len(uuids) == 0:
raise Exception("Missing symbol file for " + fn)
if len(uuids) > 1:
raise Exception("Ambiguous symbol file for " + fn)
return os.path.join(d1, uuids[0], fn + ".sym")
parsedSymbolFiles = {}
def addressToSymbol(file, address, symbolsDir):
p = None
if not file in parsedSymbolFiles:
symfile = guessSymbolFile(file, symbolsDir)
if symfile:
p = readSymbolFile(symfile)
else:
p = None
parsedSymbolFiles[file] = p
else:
p = parsedSymbolFiles[file]
if p:
return p.addrToSymbol(address)
else:
return ""
line_re = re.compile("^(.*) ?\[([^ ]*) \+(0x[0-9A-F]{1,8})\](.*)$")
balance_tree_re = re.compile("^([ \|0-9-]*)")
def fixSymbols(line, symbolsDir):
result = line_re.match(line)
if result is not None:
# before allows preservation of balance trees
# after allows preservation of counts
(before, file, address, after) = result.groups()
address = int(address, 16)
# throw away the bad symbol, but keep balance tree structure
before = balance_tree_re.match(before).groups()[0]
symbol = addressToSymbol(file, address, symbolsDir)
if not symbol:
symbol = "%s + 0x%x" % (os.path.basename(file), address)
return before + symbol + after + "\n"
else:
return line
if __name__ == "__main__":
symbolsDir = sys.argv[1]
for line in iter(sys.stdin.readline, ''):
print fixSymbols(line, symbolsDir),