391 lines
12 KiB
Python
Executable File
391 lines
12 KiB
Python
Executable File
#!/usr/bin/env python
|
|
#===- lib/asan/scripts/asan_symbolize.py -----------------------------------===#
|
|
#
|
|
# The LLVM Compiler Infrastructure
|
|
#
|
|
# This file is distributed under the University of Illinois Open Source
|
|
# License. See LICENSE.TXT for details.
|
|
#
|
|
#===------------------------------------------------------------------------===#
|
|
import bisect
|
|
import getopt
|
|
import os
|
|
import pty
|
|
import re
|
|
import subprocess
|
|
import sys
|
|
import termios
|
|
|
|
llvm_symbolizer = None
|
|
symbolizers = {}
|
|
DEBUG = False
|
|
demangle = False;
|
|
|
|
|
|
# FIXME: merge the code that calls fix_filename().
|
|
def fix_filename(file_name):
|
|
for path_to_cut in sys.argv[1:]:
|
|
file_name = re.sub('.*' + path_to_cut, '', file_name)
|
|
file_name = re.sub('.*asan_[a-z_]*.cc:[0-9]*', '_asan_rtl_', file_name)
|
|
file_name = re.sub('.*crtstuff.c:0', '???:0', file_name)
|
|
return file_name
|
|
|
|
|
|
class Symbolizer(object):
|
|
def __init__(self):
|
|
pass
|
|
|
|
def symbolize(self, addr, binary, offset):
|
|
"""Symbolize the given address (pair of binary and offset).
|
|
|
|
Overriden in subclasses.
|
|
Args:
|
|
addr: virtual address of an instruction.
|
|
binary: path to executable/shared object containing this instruction.
|
|
offset: instruction offset in the @binary.
|
|
Returns:
|
|
list of strings (one string for each inlined frame) describing
|
|
the code locations for this instruction (that is, function name, file
|
|
name, line and column numbers).
|
|
"""
|
|
return None
|
|
|
|
|
|
class LLVMSymbolizer(Symbolizer):
|
|
def __init__(self, symbolizer_path):
|
|
super(LLVMSymbolizer, self).__init__()
|
|
self.symbolizer_path = symbolizer_path
|
|
self.pipe = self.open_llvm_symbolizer()
|
|
|
|
def open_llvm_symbolizer(self):
|
|
if not os.path.exists(self.symbolizer_path):
|
|
return None
|
|
cmd = [self.symbolizer_path,
|
|
'--use-symbol-table=true',
|
|
'--demangle=%s' % demangle,
|
|
'--functions=true',
|
|
'--inlining=true']
|
|
if DEBUG:
|
|
print ' '.join(cmd)
|
|
return subprocess.Popen(cmd, stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE)
|
|
|
|
def symbolize(self, addr, binary, offset):
|
|
"""Overrides Symbolizer.symbolize."""
|
|
if not self.pipe:
|
|
return None
|
|
result = []
|
|
try:
|
|
symbolizer_input = '%s %s' % (binary, offset)
|
|
if DEBUG:
|
|
print symbolizer_input
|
|
print >> self.pipe.stdin, symbolizer_input
|
|
while True:
|
|
function_name = self.pipe.stdout.readline().rstrip()
|
|
if not function_name:
|
|
break
|
|
file_name = self.pipe.stdout.readline().rstrip()
|
|
file_name = fix_filename(file_name)
|
|
if (not function_name.startswith('??') and
|
|
not file_name.startswith('??')):
|
|
# Append only valid frames.
|
|
result.append('%s in %s %s' % (addr, function_name,
|
|
file_name))
|
|
except Exception:
|
|
result = []
|
|
if not result:
|
|
result = None
|
|
return result
|
|
|
|
|
|
def LLVMSymbolizerFactory(system):
|
|
symbolizer_path = os.getenv('LLVM_SYMBOLIZER_PATH')
|
|
if not symbolizer_path:
|
|
# Assume llvm-symbolizer is in PATH.
|
|
symbolizer_path = 'llvm-symbolizer'
|
|
return LLVMSymbolizer(symbolizer_path)
|
|
|
|
|
|
class Addr2LineSymbolizer(Symbolizer):
|
|
def __init__(self, binary):
|
|
super(Addr2LineSymbolizer, self).__init__()
|
|
self.binary = binary
|
|
self.pipe = self.open_addr2line()
|
|
|
|
def open_addr2line(self):
|
|
cmd = ['addr2line', '-f']
|
|
if demangle:
|
|
cmd += ['--demangle']
|
|
cmd += ['-e', self.binary]
|
|
if DEBUG:
|
|
print ' '.join(cmd)
|
|
return subprocess.Popen(cmd,
|
|
stdin=subprocess.PIPE, stdout=subprocess.PIPE)
|
|
|
|
def symbolize(self, addr, binary, offset):
|
|
"""Overrides Symbolizer.symbolize."""
|
|
if self.binary != binary:
|
|
return None
|
|
try:
|
|
print >> self.pipe.stdin, offset
|
|
function_name = self.pipe.stdout.readline().rstrip()
|
|
file_name = self.pipe.stdout.readline().rstrip()
|
|
except Exception:
|
|
function_name = ''
|
|
file_name = ''
|
|
file_name = fix_filename(file_name)
|
|
return ['%s in %s %s' % (addr, function_name, file_name)]
|
|
|
|
|
|
class UnbufferedLineConverter(object):
|
|
"""
|
|
Wrap a child process that responds to each line of input with one line of
|
|
output. Uses pty to trick the child into providing unbuffered output.
|
|
"""
|
|
def __init__(self, args, close_stderr=False):
|
|
pid, fd = pty.fork()
|
|
if pid == 0:
|
|
# We're the child. Transfer control to command.
|
|
if close_stderr:
|
|
dev_null = os.open('/dev/null', 0)
|
|
os.dup2(dev_null, 2)
|
|
os.execvp(args[0], args)
|
|
else:
|
|
# Disable echoing.
|
|
attr = termios.tcgetattr(fd)
|
|
attr[3] = attr[3] & ~termios.ECHO
|
|
termios.tcsetattr(fd, termios.TCSANOW, attr)
|
|
# Set up a file()-like interface to the child process
|
|
self.r = os.fdopen(fd, "r", 1)
|
|
self.w = os.fdopen(os.dup(fd), "w", 1)
|
|
|
|
def convert(self, line):
|
|
self.w.write(line + "\n")
|
|
return self.readline()
|
|
|
|
def readline(self):
|
|
return self.r.readline().rstrip()
|
|
|
|
|
|
class DarwinSymbolizer(Symbolizer):
|
|
def __init__(self, addr, binary):
|
|
super(DarwinSymbolizer, self).__init__()
|
|
self.binary = binary
|
|
# Guess which arch we're running. 10 = len('0x') + 8 hex digits.
|
|
if len(addr) > 10:
|
|
self.arch = 'x86_64'
|
|
else:
|
|
self.arch = 'i386'
|
|
self.open_atos()
|
|
|
|
def open_atos(self):
|
|
if DEBUG:
|
|
print 'atos -o %s -arch %s' % (self.binary, self.arch)
|
|
cmdline = ['atos', '-o', self.binary, '-arch', self.arch]
|
|
self.atos = UnbufferedLineConverter(cmdline, close_stderr=True)
|
|
|
|
def symbolize(self, addr, binary, offset):
|
|
"""Overrides Symbolizer.symbolize."""
|
|
if self.binary != binary:
|
|
return None
|
|
atos_line = self.atos.convert('0x%x' % int(offset, 16))
|
|
while "got symbolicator for" in atos_line:
|
|
atos_line = self.atos.readline()
|
|
# A well-formed atos response looks like this:
|
|
# foo(type1, type2) (in object.name) (filename.cc:80)
|
|
match = re.match('^(.*) \(in (.*)\) \((.*:\d*)\)$', atos_line)
|
|
if DEBUG:
|
|
print 'atos_line: ', atos_line
|
|
if match:
|
|
function_name = match.group(1)
|
|
function_name = re.sub('\(.*?\)', '', function_name)
|
|
file_name = fix_filename(match.group(3))
|
|
return ['%s in %s %s' % (addr, function_name, file_name)]
|
|
else:
|
|
return ['%s in %s' % (addr, atos_line)]
|
|
|
|
|
|
# Chain several symbolizers so that if one symbolizer fails, we fall back
|
|
# to the next symbolizer in chain.
|
|
class ChainSymbolizer(Symbolizer):
|
|
def __init__(self, symbolizer_list):
|
|
super(ChainSymbolizer, self).__init__()
|
|
self.symbolizer_list = symbolizer_list
|
|
|
|
def symbolize(self, addr, binary, offset):
|
|
"""Overrides Symbolizer.symbolize."""
|
|
for symbolizer in self.symbolizer_list:
|
|
if symbolizer:
|
|
result = symbolizer.symbolize(addr, binary, offset)
|
|
if result:
|
|
return result
|
|
return None
|
|
|
|
def append_symbolizer(self, symbolizer):
|
|
self.symbolizer_list.append(symbolizer)
|
|
|
|
|
|
def BreakpadSymbolizerFactory(binary):
|
|
suffix = os.getenv('BREAKPAD_SUFFIX')
|
|
if suffix:
|
|
filename = binary + suffix
|
|
if os.access(filename, os.F_OK):
|
|
return BreakpadSymbolizer(filename)
|
|
return None
|
|
|
|
|
|
def SystemSymbolizerFactory(system, addr, binary):
|
|
if system == 'Darwin':
|
|
return DarwinSymbolizer(addr, binary)
|
|
elif system == 'Linux':
|
|
return Addr2LineSymbolizer(binary)
|
|
|
|
|
|
class BreakpadSymbolizer(Symbolizer):
|
|
def __init__(self, filename):
|
|
super(BreakpadSymbolizer, self).__init__()
|
|
self.filename = filename
|
|
lines = file(filename).readlines()
|
|
self.files = []
|
|
self.symbols = {}
|
|
self.address_list = []
|
|
self.addresses = {}
|
|
# MODULE mac x86_64 A7001116478B33F18FF9BEDE9F615F190 t
|
|
fragments = lines[0].rstrip().split()
|
|
self.arch = fragments[2]
|
|
self.debug_id = fragments[3]
|
|
self.binary = ' '.join(fragments[4:])
|
|
self.parse_lines(lines[1:])
|
|
|
|
def parse_lines(self, lines):
|
|
cur_function_addr = ''
|
|
for line in lines:
|
|
fragments = line.split()
|
|
if fragments[0] == 'FILE':
|
|
assert int(fragments[1]) == len(self.files)
|
|
self.files.append(' '.join(fragments[2:]))
|
|
elif fragments[0] == 'PUBLIC':
|
|
self.symbols[int(fragments[1], 16)] = ' '.join(fragments[3:])
|
|
elif fragments[0] in ['CFI', 'STACK']:
|
|
pass
|
|
elif fragments[0] == 'FUNC':
|
|
cur_function_addr = int(fragments[1], 16)
|
|
if not cur_function_addr in self.symbols.keys():
|
|
self.symbols[cur_function_addr] = ' '.join(fragments[4:])
|
|
else:
|
|
# Line starting with an address.
|
|
addr = int(fragments[0], 16)
|
|
self.address_list.append(addr)
|
|
# Tuple of symbol address, size, line, file number.
|
|
self.addresses[addr] = (cur_function_addr,
|
|
int(fragments[1], 16),
|
|
int(fragments[2]),
|
|
int(fragments[3]))
|
|
self.address_list.sort()
|
|
|
|
def get_sym_file_line(self, addr):
|
|
key = None
|
|
if addr in self.addresses.keys():
|
|
key = addr
|
|
else:
|
|
index = bisect.bisect_left(self.address_list, addr)
|
|
if index == 0:
|
|
return None
|
|
else:
|
|
key = self.address_list[index - 1]
|
|
sym_id, size, line_no, file_no = self.addresses[key]
|
|
symbol = self.symbols[sym_id]
|
|
filename = self.files[file_no]
|
|
if addr < key + size:
|
|
return symbol, filename, line_no
|
|
else:
|
|
return None
|
|
|
|
def symbolize(self, addr, binary, offset):
|
|
if self.binary != binary:
|
|
return None
|
|
res = self.get_sym_file_line(int(offset, 16))
|
|
if res:
|
|
function_name, file_name, line_no = res
|
|
result = ['%s in %s %s:%d' % (
|
|
addr, function_name, file_name, line_no)]
|
|
print result
|
|
return result
|
|
else:
|
|
return None
|
|
|
|
|
|
class SymbolizationLoop(object):
|
|
def __init__(self, binary_name_filter=None):
|
|
# Used by clients who may want to supply a different binary name.
|
|
# E.g. in Chrome several binaries may share a single .dSYM.
|
|
self.binary_name_filter = binary_name_filter
|
|
self.system = os.uname()[0]
|
|
if self.system in ['Linux', 'Darwin']:
|
|
self.llvm_symbolizer = LLVMSymbolizerFactory(self.system)
|
|
else:
|
|
raise Exception('Unknown system')
|
|
|
|
def symbolize_address(self, addr, binary, offset):
|
|
# Use the chain of symbolizers:
|
|
# Breakpad symbolizer -> LLVM symbolizer -> addr2line/atos
|
|
# (fall back to next symbolizer if the previous one fails).
|
|
if not binary in symbolizers:
|
|
symbolizers[binary] = ChainSymbolizer(
|
|
[BreakpadSymbolizerFactory(binary), self.llvm_symbolizer])
|
|
result = symbolizers[binary].symbolize(addr, binary, offset)
|
|
if result is None:
|
|
# Initialize system symbolizer only if other symbolizers failed.
|
|
symbolizers[binary].append_symbolizer(
|
|
SystemSymbolizerFactory(self.system, addr, binary))
|
|
result = symbolizers[binary].symbolize(addr, binary, offset)
|
|
# The system symbolizer must produce some result.
|
|
assert result
|
|
return result
|
|
|
|
def print_symbolized_lines(self, symbolized_lines):
|
|
if not symbolized_lines:
|
|
print self.current_line
|
|
else:
|
|
for symbolized_frame in symbolized_lines:
|
|
print ' #' + str(self.frame_no) + ' ' + symbolized_frame.rstrip()
|
|
self.frame_no += 1
|
|
|
|
def process_stdin(self):
|
|
self.frame_no = 0
|
|
while True:
|
|
line = sys.stdin.readline()
|
|
if not line:
|
|
break
|
|
self.current_line = line.rstrip()
|
|
#0 0x7f6e35cf2e45 (/blah/foo.so+0x11fe45)
|
|
stack_trace_line_format = (
|
|
'^( *#([0-9]+) *)(0x[0-9a-f]+) *\((.*)\+(0x[0-9a-f]+)\)')
|
|
match = re.match(stack_trace_line_format, line)
|
|
if not match:
|
|
print self.current_line
|
|
continue
|
|
if DEBUG:
|
|
print line
|
|
_, frameno_str, addr, binary, offset = match.groups()
|
|
if frameno_str == '0':
|
|
# Assume that frame #0 is the first frame of new stack trace.
|
|
self.frame_no = 0
|
|
original_binary = binary
|
|
if self.binary_name_filter:
|
|
binary = self.binary_name_filter(binary)
|
|
symbolized_line = self.symbolize_address(addr, binary, offset)
|
|
if not symbolized_line:
|
|
if original_binary != binary:
|
|
symbolized_line = self.symbolize_address(addr, binary, offset)
|
|
self.print_symbolized_lines(symbolized_line)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
opts, args = getopt.getopt(sys.argv[1:], "d", ["demangle"])
|
|
for o, a in opts:
|
|
if o in ("-d", "--demangle"):
|
|
demangle = True;
|
|
loop = SymbolizationLoop()
|
|
loop.process_stdin()
|