138 lines
4.6 KiB
Python
Executable File
138 lines
4.6 KiB
Python
Executable File
#!/usr/bin/env python
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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 breakpad symbols to post-process the entries produced by
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# NS_FormatCodeAddress(), which on TBPL builds often lack a file name and a
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# line number (and on Linux even the symbol is often bad).
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from __future__ import with_statement
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import sys
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import os
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import re
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import bisect
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def prettyFileName(name):
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if name.startswith("../") or name.startswith("..\\"):
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# dom_quickstubs.cpp and many .h files show up with relative paths that are useless
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# and/or don't correspond to the layout of the source tree.
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return os.path.basename(name) + ":"
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elif name.startswith("hg:"):
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bits = name.split(":")
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if len(bits) == 4:
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(junk, repo, path, rev) = bits
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# We could construct an hgweb URL with /file/ or /annotate/, like this:
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# return "http://%s/annotate/%s/%s#l" % (repo, rev, path)
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return path + ":"
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return name + ":"
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class SymbolFile:
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def __init__(self, fn):
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addrs = [] # list of addresses, which will be sorted once we're done initializing
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funcs = {} # hash: address --> (function name + possible file/line)
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files = {} # hash: filenum (string) --> prettified filename ready to have a line number appended
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with open(fn) as f:
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for line in f:
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line = line.rstrip()
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# http://code.google.com/p/google-breakpad/wiki/SymbolFiles
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if line.startswith("FUNC "):
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# FUNC <address> <size> <stack_param_size> <name>
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(junk, rva, size, ss, name) = line.split(None, 4)
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rva = int(rva,16)
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funcs[rva] = name
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addrs.append(rva)
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lastFuncName = name
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elif line.startswith("PUBLIC "):
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# PUBLIC <address> <stack_param_size> <name>
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(junk, rva, ss, name) = line.split(None, 3)
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rva = int(rva,16)
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funcs[rva] = name
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addrs.append(rva)
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elif line.startswith("FILE "):
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# FILE <number> <name>
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(junk, filenum, name) = line.split(None, 2)
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files[filenum] = prettyFileName(name)
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elif line[0] in "0123456789abcdef":
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# This is one of the "line records" corresponding to the last FUNC record
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# <address> <size> <line> <filenum>
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(rva, size, line, filenum) = line.split(None)
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rva = int(rva,16)
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file = files[filenum]
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name = lastFuncName + " [" + file + line + "]"
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funcs[rva] = name
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addrs.append(rva)
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# skip everything else
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#print "Loaded %d functions from symbol file %s" % (len(funcs), os.path.basename(fn))
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self.addrs = sorted(addrs)
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self.funcs = funcs
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def addrToSymbol(self, address):
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i = bisect.bisect(self.addrs, address) - 1
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if i > 0:
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#offset = address - self.addrs[i]
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return self.funcs[self.addrs[i]]
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else:
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return ""
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def guessSymbolFile(fn, symbolsDir):
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"""Guess a symbol file based on an object file's basename, ignoring the path and UUID."""
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fn = os.path.basename(fn)
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d1 = os.path.join(symbolsDir, fn)
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if not os.path.exists(d1):
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fn = fn + ".pdb"
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d1 = os.path.join(symbolsDir, fn)
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if not os.path.exists(d1):
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return None
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uuids = os.listdir(d1)
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if len(uuids) == 0:
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raise Exception("Missing symbol file for " + fn)
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if len(uuids) > 1:
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raise Exception("Ambiguous symbol file for " + fn)
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if fn.endswith(".pdb"):
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fn = fn[:-4]
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return os.path.join(d1, uuids[0], fn + ".sym")
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parsedSymbolFiles = {}
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def getSymbolFile(file, symbolsDir):
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p = None
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if not file in parsedSymbolFiles:
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symfile = guessSymbolFile(file, symbolsDir)
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if symfile:
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p = SymbolFile(symfile)
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else:
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p = None
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parsedSymbolFiles[file] = p
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else:
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p = parsedSymbolFiles[file]
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return p
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def addressToSymbol(file, address, symbolsDir):
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p = getSymbolFile(file, symbolsDir)
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if p:
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return p.addrToSymbol(address)
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else:
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return ""
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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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def fixSymbols(line, symbolsDir):
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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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symbol = addressToSymbol(file, address, symbolsDir)
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if not symbol:
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symbol = "%s + 0x%x" % (os.path.basename(file), address)
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return before + symbol + after + "\n"
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else:
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return line
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if __name__ == "__main__":
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symbolsDir = sys.argv[1]
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for line in iter(sys.stdin.readline, ''):
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print fixSymbols(line, symbolsDir),
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