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#!/usr/bin/python
#----------------------------------------------------------------------
# Be sure to add the python path that points to the LLDB shared library.
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#
# To use this in the embedded python interpreter using "lldb":
#
# cd /path/containing/crashlog.py
# lldb
# (lldb) script import crashlog
# "crashlog" command installed, type "crashlog --help" for detailed help
# (lldb) crashlog ~/Library/Logs/DiagnosticReports/a.crash
#
# The benefit of running the crashlog command inside lldb in the
# embedded python interpreter is when the command completes, there
# will be a target with all of the files loaded at the locations
# described in the crash log. Only the files that have stack frames
# in the backtrace will be loaded unless the "--load-all" option
# has been specified. This allows users to explore the program in the
# state it was in right at crash time.
#
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# On MacOSX csh, tcsh:
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# ( setenv PYTHONPATH /path/to/LLDB.framework/Resources/Python ; ./crashlog.py ~/Library/Logs/DiagnosticReports/a.crash )
#
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# On MacOSX sh, bash:
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# PYTHONPATH=/path/to/LLDB.framework/Resources/Python ./crashlog.py ~/Library/Logs/DiagnosticReports/a.crash
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#----------------------------------------------------------------------
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import commands
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import cmd
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import datetime
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import glob
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import optparse
import os
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import platform
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import plistlib
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import pprint # pp = pprint.PrettyPrinter(indent=4); pp.pprint(command_args)
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import re
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import shlex
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import string
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import sys
import time
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import uuid
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try :
# Just try for LLDB in case PYTHONPATH is already correctly setup
import lldb
except ImportError :
lldb_python_dirs = list ( )
# lldb is not in the PYTHONPATH, try some defaults for the current platform
platform_system = platform . system ( )
if platform_system == ' Darwin ' :
# On Darwin, try the currently selected Xcode directory
xcode_dir = commands . getoutput ( " xcode-select --print-path " )
if xcode_dir :
lldb_python_dirs . append ( os . path . realpath ( xcode_dir + ' /../SharedFrameworks/LLDB.framework/Resources/Python ' ) )
lldb_python_dirs . append ( xcode_dir + ' /Library/PrivateFrameworks/LLDB.framework/Resources/Python ' )
lldb_python_dirs . append ( ' /System/Library/PrivateFrameworks/LLDB.framework/Resources/Python ' )
success = False
for lldb_python_dir in lldb_python_dirs :
if os . path . exists ( lldb_python_dir ) :
if not ( sys . path . __contains__ ( lldb_python_dir ) ) :
sys . path . append ( lldb_python_dir )
try :
import lldb
except ImportError :
pass
else :
print ' imported lldb from: " %s " ' % ( lldb_python_dir )
success = True
break
if not success :
print " error: couldn ' t locate the ' lldb ' module, please set PYTHONPATH correctly "
sys . exit ( 1 )
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from lldb . utils import symbolication
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PARSE_MODE_NORMAL = 0
PARSE_MODE_THREAD = 1
PARSE_MODE_IMAGES = 2
PARSE_MODE_THREGS = 3
PARSE_MODE_SYSTEM = 4
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class CrashLog ( symbolication . Symbolicator ) :
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""" Class that does parses darwin crash logs """
thread_state_regex = re . compile ( ' ^Thread ([0-9]+) crashed with ' )
thread_regex = re . compile ( ' ^Thread ([0-9]+)([^:]*):(.*) ' )
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frame_regex = re . compile ( ' ^([0-9]+) +([^ ]+) * \t ?(0x[0-9a-fA-F]+) +(.*) ' )
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image_regex_uuid = re . compile ( ' (0x[0-9a-fA-F]+)[- ]+(0x[0-9a-fA-F]+) +[+]?([^ ]+) +([^<]+)<([-0-9a-fA-F]+)> (.*) ' ) ;
image_regex_no_uuid = re . compile ( ' (0x[0-9a-fA-F]+)[- ]+(0x[0-9a-fA-F]+) +[+]?([^ ]+) +([^/]+)/(.*) ' ) ;
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empty_line_regex = re . compile ( ' ^$ ' )
class Thread :
""" Class that represents a thread in a darwin crash log """
def __init__ ( self , index ) :
self . index = index
self . frames = list ( )
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self . idents = list ( )
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self . registers = dict ( )
self . reason = None
self . queue = None
def dump ( self , prefix ) :
print " %s Thread[ %u ] %s " % ( prefix , self . index , self . reason )
if self . frames :
print " %s Frames: " % ( prefix )
for frame in self . frames :
frame . dump ( prefix + ' ' )
if self . registers :
print " %s Registers: " % ( prefix )
for reg in self . registers . keys ( ) :
print " %s %-5s = %#16.16x " % ( prefix , reg , self . registers [ reg ] )
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def add_ident ( self , ident ) :
if not ident in self . idents :
self . idents . append ( ident )
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def did_crash ( self ) :
return self . reason != None
def __str__ ( self ) :
s = " Thread[ %u ] " % self . index
if self . reason :
s + = ' %s ' % self . reason
return s
class Frame :
""" Class that represents a stack frame in a thread in a darwin crash log """
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def __init__ ( self , index , pc , description ) :
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self . pc = pc
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self . description = description
self . index = index
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def __str__ ( self ) :
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if self . description :
return " [ %3u ] 0x %16.16x %s " % ( self . index , self . pc , self . description )
else :
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return " [ %3u ] 0x %16.16x " % ( self . index , self . pc )
def dump ( self , prefix ) :
print " %s %s " % ( prefix , str ( self ) )
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class DarwinImage ( symbolication . Image ) :
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""" Class that represents a binary images in a darwin crash log """
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dsymForUUIDBinary = os . path . expanduser ( ' ~rc/bin/dsymForUUID ' )
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if not os . path . exists ( dsymForUUIDBinary ) :
dsymForUUIDBinary = commands . getoutput ( ' which dsymForUUID ' )
dwarfdump_uuid_regex = re . compile ( ' UUID: ([-0-9a-fA-F]+) \ (([^ \ (]+) \ ) .* ' )
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def __init__ ( self , text_addr_lo , text_addr_hi , identifier , version , uuid , path ) :
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symbolication . Image . __init__ ( self , path , uuid ) ;
self . add_section ( symbolication . Section ( text_addr_lo , text_addr_hi , " __TEXT " ) )
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self . identifier = identifier
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self . version = version
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def locate_module_and_debug_symbols ( self ) :
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# Don't load a module twice...
if self . resolved :
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return True
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# Mark this as resolved so we don't keep trying
self . resolved = True
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uuid_str = self . get_normalized_uuid_string ( )
print ' Getting symbols for %s %s ... ' % ( uuid_str , self . path ) ,
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if os . path . exists ( self . dsymForUUIDBinary ) :
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dsym_for_uuid_command = ' %s %s ' % ( self . dsymForUUIDBinary , uuid_str )
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s = commands . getoutput ( dsym_for_uuid_command )
if s :
plist_root = plistlib . readPlistFromString ( s )
if plist_root :
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plist = plist_root [ uuid_str ]
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if plist :
if ' DBGArchitecture ' in plist :
self . arch = plist [ ' DBGArchitecture ' ]
if ' DBGDSYMPath ' in plist :
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self . symfile = os . path . realpath ( plist [ ' DBGDSYMPath ' ] )
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if ' DBGSymbolRichExecutable ' in plist :
self . resolved_path = os . path . expanduser ( plist [ ' DBGSymbolRichExecutable ' ] )
if not self . resolved_path and os . path . exists ( self . path ) :
dwarfdump_cmd_output = commands . getoutput ( ' dwarfdump --uuid " %s " ' % self . path )
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self_uuid = self . get_uuid ( )
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for line in dwarfdump_cmd_output . splitlines ( ) :
match = self . dwarfdump_uuid_regex . search ( line )
if match :
dwarf_uuid_str = match . group ( 1 )
dwarf_uuid = uuid . UUID ( dwarf_uuid_str )
if self_uuid == dwarf_uuid :
self . resolved_path = self . path
self . arch = match . group ( 2 )
break ;
if not self . resolved_path :
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self . unavailable = True
print " error \n error: unable to locate ' %s ' with UUID %s " % ( self . path , uuid_str )
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return False
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if ( self . resolved_path and os . path . exists ( self . resolved_path ) ) or ( self . path and os . path . exists ( self . path ) ) :
print ' ok '
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# if self.resolved_path:
# print ' exe = "%s"' % self.resolved_path
# if self.symfile:
# print ' dsym = "%s"' % self.symfile
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return True
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else :
self . unavailable = True
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return False
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def __init__ ( self , path ) :
""" CrashLog constructor that take a path to a darwin crash log file """
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symbolication . Symbolicator . __init__ ( self ) ;
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self . path = os . path . expanduser ( path ) ;
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self . info_lines = list ( )
self . system_profile = list ( )
self . threads = list ( )
self . idents = list ( ) # A list of the required identifiers for doing all stack backtraces
self . crashed_thread_idx = - 1
self . version = - 1
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self . error = None
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# With possible initial component of ~ or ~user replaced by that user's home directory.
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try :
f = open ( self . path )
except IOError :
self . error = ' error: cannot open " %s " ' % self . path
return
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self . file_lines = f . read ( ) . splitlines ( )
parse_mode = PARSE_MODE_NORMAL
thread = None
for line in self . file_lines :
# print line
line_len = len ( line )
if line_len == 0 :
if thread :
if parse_mode == PARSE_MODE_THREAD :
if thread . index == self . crashed_thread_idx :
thread . reason = ' '
if self . thread_exception :
thread . reason + = self . thread_exception
if self . thread_exception_data :
thread . reason + = " ( %s ) " % self . thread_exception_data
self . threads . append ( thread )
thread = None
else :
# only append an extra empty line if the previous line
# in the info_lines wasn't empty
if len ( self . info_lines ) > 0 and len ( self . info_lines [ - 1 ] ) :
self . info_lines . append ( line )
parse_mode = PARSE_MODE_NORMAL
# print 'PARSE_MODE_NORMAL'
elif parse_mode == PARSE_MODE_NORMAL :
if line . startswith ( ' Process: ' ) :
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( self . process_name , pid_with_brackets ) = line [ 8 : ] . strip ( ) . split ( ' [ ' )
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self . process_id = pid_with_brackets . strip ( ' [] ' )
elif line . startswith ( ' Path: ' ) :
self . process_path = line [ 5 : ] . strip ( )
elif line . startswith ( ' Identifier: ' ) :
self . process_identifier = line [ 11 : ] . strip ( )
elif line . startswith ( ' Version: ' ) :
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version_string = line [ 8 : ] . strip ( )
matched_pair = re . search ( " (.+) \ ((.+) \ ) " , version_string )
if matched_pair :
self . process_version = matched_pair . group ( 1 )
self . process_compatability_version = matched_pair . group ( 2 )
else :
self . process = version_string
self . process_compatability_version = version_string
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elif line . startswith ( ' Parent Process: ' ) :
( self . parent_process_name , pid_with_brackets ) = line [ 15 : ] . strip ( ) . split ( )
self . parent_process_id = pid_with_brackets . strip ( ' [] ' )
elif line . startswith ( ' Exception Type: ' ) :
self . thread_exception = line [ 15 : ] . strip ( )
continue
elif line . startswith ( ' Exception Codes: ' ) :
self . thread_exception_data = line [ 16 : ] . strip ( )
continue
elif line . startswith ( ' Crashed Thread: ' ) :
self . crashed_thread_idx = int ( line [ 15 : ] . strip ( ) . split ( ) [ 0 ] )
continue
elif line . startswith ( ' Report Version: ' ) :
self . version = int ( line [ 15 : ] . strip ( ) )
continue
elif line . startswith ( ' System Profile: ' ) :
parse_mode = PARSE_MODE_SYSTEM
continue
elif ( line . startswith ( ' Interval Since Last Report: ' ) or
line . startswith ( ' Crashes Since Last Report: ' ) or
line . startswith ( ' Per-App Interval Since Last Report: ' ) or
line . startswith ( ' Per-App Crashes Since Last Report: ' ) or
line . startswith ( ' Sleep/Wake UUID: ' ) or
line . startswith ( ' Anonymous UUID: ' ) ) :
# ignore these
continue
elif line . startswith ( ' Thread ' ) :
thread_state_match = self . thread_state_regex . search ( line )
if thread_state_match :
thread_state_match = self . thread_regex . search ( line )
thread_idx = int ( thread_state_match . group ( 1 ) )
parse_mode = PARSE_MODE_THREGS
thread = self . threads [ thread_idx ]
else :
thread_match = self . thread_regex . search ( line )
if thread_match :
# print 'PARSE_MODE_THREAD'
parse_mode = PARSE_MODE_THREAD
thread_idx = int ( thread_match . group ( 1 ) )
thread = CrashLog . Thread ( thread_idx )
continue
elif line . startswith ( ' Binary Images: ' ) :
parse_mode = PARSE_MODE_IMAGES
continue
self . info_lines . append ( line . strip ( ) )
elif parse_mode == PARSE_MODE_THREAD :
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if line . startswith ( ' Thread ' ) :
continue
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frame_match = self . frame_regex . search ( line )
if frame_match :
ident = frame_match . group ( 2 )
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thread . add_ident ( ident )
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if not ident in self . idents :
self . idents . append ( ident )
thread . frames . append ( CrashLog . Frame ( int ( frame_match . group ( 1 ) ) , int ( frame_match . group ( 3 ) , 0 ) , frame_match . group ( 4 ) ) )
else :
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print ' error: frame regex failed for line: " %s " ' % line
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elif parse_mode == PARSE_MODE_IMAGES :
image_match = self . image_regex_uuid . search ( line )
if image_match :
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image = CrashLog . DarwinImage ( int ( image_match . group ( 1 ) , 0 ) ,
int ( image_match . group ( 2 ) , 0 ) ,
image_match . group ( 3 ) . strip ( ) ,
image_match . group ( 4 ) . strip ( ) ,
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uuid . UUID ( image_match . group ( 5 ) ) ,
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image_match . group ( 6 ) )
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self . images . append ( image )
else :
image_match = self . image_regex_no_uuid . search ( line )
if image_match :
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image = CrashLog . DarwinImage ( int ( image_match . group ( 1 ) , 0 ) ,
int ( image_match . group ( 2 ) , 0 ) ,
image_match . group ( 3 ) . strip ( ) ,
image_match . group ( 4 ) . strip ( ) ,
None ,
image_match . group ( 5 ) )
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self . images . append ( image )
else :
print " error: image regex failed for: %s " % line
elif parse_mode == PARSE_MODE_THREGS :
stripped_line = line . strip ( )
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# "r12: 0x00007fff6b5939c8 r13: 0x0000000007000006 r14: 0x0000000000002a03 r15: 0x0000000000000c00"
reg_values = re . findall ( ' ([a-zA-Z0-9]+: 0[Xx][0-9a-fA-F]+) * ' , stripped_line ) ;
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for reg_value in reg_values :
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#print 'reg_value = "%s"' % reg_value
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( reg , value ) = reg_value . split ( ' : ' )
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#print 'reg = "%s"' % reg
#print 'value = "%s"' % value
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thread . registers [ reg . strip ( ) ] = int ( value , 0 )
elif parse_mode == PARSE_MODE_SYSTEM :
self . system_profile . append ( line )
f . close ( )
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def dump ( self ) :
print " Crash Log File: %s " % ( self . path )
print " \n Threads: "
for thread in self . threads :
thread . dump ( ' ' )
print " \n Images: "
for image in self . images :
image . dump ( ' ' )
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def find_image_with_identifier ( self , identifier ) :
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for image in self . images :
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if image . identifier == identifier :
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return image
return None
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def create_target ( self ) :
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#print 'crashlog.create_target()...'
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target = symbolication . Symbolicator . create_target ( self )
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if target :
return target
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# We weren't able to open the main executable as, but we can still symbolicate
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print ' crashlog.create_target()...2 '
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if self . idents :
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for ident in self . idents :
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image = self . find_image_with_identifier ( ident )
if image :
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target = image . create_target ( )
if target :
return target # success
print ' crashlog.create_target()...3 '
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for image in self . images :
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target = image . create_target ( )
if target :
return target # success
print ' crashlog.create_target()...4 '
print ' error: unable to locate any executables from the crash log '
return None
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def usage ( ) :
print " Usage: lldb-symbolicate.py [-n name] executable-image "
sys . exit ( 0 )
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class Interactive ( cmd . Cmd ) :
''' Interactive prompt for analyzing one or more Darwin crash logs, type " help " to see a list of supported commands. '''
image_option_parser = None
def __init__ ( self , crash_logs ) :
cmd . Cmd . __init__ ( self )
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self . use_rawinput = False
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self . intro = ' Interactive crashlogs prompt, type " help " to see a list of supported commands. '
self . crash_logs = crash_logs
self . prompt = ' % '
def default ( self , line ) :
''' Catch all for unknown command, which will exit the interpreter. '''
print " uknown command: %s " % line
return True
def do_q ( self , line ) :
''' Quit command '''
return True
def do_quit ( self , line ) :
''' Quit command '''
return True
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def do_symbolicate ( self , line ) :
description = ''' Symbolicate one or more darwin crash log files by index to provide source file and line information,
inlined stack frames back to the concrete functions , and disassemble the location of the crash
for the first frame of the crashed thread . '''
option_parser = CreateSymbolicateCrashLogOptions ( ' symbolicate ' , description , False )
command_args = shlex . split ( line )
try :
( options , args ) = option_parser . parse_args ( command_args )
except :
return
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if args :
# We have arguments, they must valid be crash log file indexes
for idx_str in args :
idx = int ( idx_str )
if idx < len ( self . crash_logs ) :
SymbolicateCrashLog ( self . crash_logs [ idx ] , options )
else :
print ' error: crash log index %u is out of range ' % ( idx )
else :
# No arguments, symbolicate all crash logs using the options provided
for idx in range ( len ( self . crash_logs ) ) :
SymbolicateCrashLog ( self . crash_logs [ idx ] , options )
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def do_list ( self , line = None ) :
''' Dump a list of all crash logs that are currently loaded.
USAGE : list '''
print ' %u crash logs are loaded: ' % len ( self . crash_logs )
for ( crash_log_idx , crash_log ) in enumerate ( self . crash_logs ) :
print ' [ %u ] = %s ' % ( crash_log_idx , crash_log . path )
def do_image ( self , line ) :
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''' Dump information about one or more binary images in the crash log given an image basename, or all images if no arguments are provided. '''
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usage = " usage: % prog [options] <PATH> [PATH ...] "
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description = ''' Dump information about one or more images in all crash logs. The <PATH> can be a full path, image basename, or partial path. Searches are done in this order. '''
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command_args = shlex . split ( line )
if not self . image_option_parser :
self . image_option_parser = optparse . OptionParser ( description = description , prog = ' image ' , usage = usage )
self . image_option_parser . add_option ( ' -a ' , ' --all ' , action = ' store_true ' , help = ' show all images ' , default = False )
try :
( options , args ) = self . image_option_parser . parse_args ( command_args )
except :
return
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if args :
for image_path in args :
fullpath_search = image_path [ 0 ] == ' / '
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for ( crash_log_idx , crash_log ) in enumerate ( self . crash_logs ) :
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matches_found = 0
for ( image_idx , image ) in enumerate ( crash_log . images ) :
if fullpath_search :
if image . get_resolved_path ( ) == image_path :
matches_found + = 1
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print ' [ %u ] ' % ( crash_log_idx ) , image
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else :
image_basename = image . get_resolved_path_basename ( )
if image_basename == image_path :
matches_found + = 1
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print ' [ %u ] ' % ( crash_log_idx ) , image
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if matches_found == 0 :
for ( image_idx , image ) in enumerate ( crash_log . images ) :
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resolved_image_path = image . get_resolved_path ( )
if resolved_image_path and string . find ( image . get_resolved_path ( ) , image_path ) > = 0 :
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print ' [ %u ] ' % ( crash_log_idx ) , image
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else :
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for crash_log in self . crash_logs :
for ( image_idx , image ) in enumerate ( crash_log . images ) :
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print ' [ %u ] %s ' % ( image_idx , image )
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return False
def interactive_crashlogs ( options , args ) :
crash_log_files = list ( )
for arg in args :
for resolved_path in glob . glob ( arg ) :
crash_log_files . append ( resolved_path )
crash_logs = list ( ) ;
for crash_log_file in crash_log_files :
#print 'crash_log_file = "%s"' % crash_log_file
crash_log = CrashLog ( crash_log_file )
if crash_log . error :
print crash_log . error
continue
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if options . debug :
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crash_log . dump ( )
if not crash_log . images :
print ' error: no images in crash log " %s " ' % ( crash_log )
continue
else :
crash_logs . append ( crash_log )
interpreter = Interactive ( crash_logs )
# List all crash logs that were imported
interpreter . do_list ( )
interpreter . cmdloop ( )
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def save_crashlog ( debugger , command , result , dict ) :
usage = " usage: % prog [options] <output-path> "
description = ''' Export the state of current target into a crashlog file '''
parser = optparse . OptionParser ( description = description , prog = ' save_crashlog ' , usage = usage )
parser . add_option ( ' -v ' , ' --verbose ' , action = ' store_true ' , dest = ' verbose ' , help = ' display verbose debug info ' , default = False )
try :
( options , args ) = parser . parse_args ( shlex . split ( command ) )
except :
result . PutCString ( " error: invalid options " ) ;
return
if len ( args ) != 1 :
result . PutCString ( " error: invalid arguments, a single output file is the only valid argument " )
return
out_file = open ( args [ 0 ] , ' w ' )
if not out_file :
result . PutCString ( " error: failed to open file ' %s ' for writing... " , args [ 0 ] ) ;
return
if lldb . target :
identifier = lldb . target . executable . basename
if lldb . process :
pid = lldb . process . id
if pid != lldb . LLDB_INVALID_PROCESS_ID :
out_file . write ( ' Process: %s [ %u ] \n ' % ( identifier , pid ) )
out_file . write ( ' Path: %s \n ' % ( lldb . target . executable . fullpath ) )
out_file . write ( ' Identifier: %s \n ' % ( identifier ) )
out_file . write ( ' \n Date/Time: %s \n ' % ( datetime . datetime . now ( ) . strftime ( " % Y- % m- %d % H: % M: % S " ) ) )
out_file . write ( ' OS Version: Mac OS X %s ( %s ) \n ' % ( platform . mac_ver ( ) [ 0 ] , commands . getoutput ( ' sysctl -n kern.osversion ' ) ) ) ;
out_file . write ( ' Report Version: 9 \n ' )
for thread_idx in range ( lldb . process . num_threads ) :
thread = lldb . process . thread [ thread_idx ]
out_file . write ( ' \n Thread %u : \n ' % ( thread_idx ) )
for ( frame_idx , frame ) in enumerate ( thread . frames ) :
frame_pc = frame . pc
frame_offset = 0
if frame . function :
block = frame . GetFrameBlock ( )
block_range = block . range [ frame . addr ]
if block_range :
block_start_addr = block_range [ 0 ]
frame_offset = frame_pc - block_start_addr . load_addr
else :
frame_offset = frame_pc - frame . function . addr . load_addr
elif frame . symbol :
frame_offset = frame_pc - frame . symbol . addr . load_addr
out_file . write ( ' %-3u %-32s 0x %16.16x %s ' % ( frame_idx , frame . module . file . basename , frame_pc , frame . name ) )
if frame_offset > 0 :
out_file . write ( ' + %u ' % ( frame_offset ) )
line_entry = frame . line_entry
if line_entry :
if options . verbose :
# This will output the fullpath + line + column
out_file . write ( ' %s ' % ( line_entry ) )
else :
out_file . write ( ' %s : %u ' % ( line_entry . file . basename , line_entry . line ) )
column = line_entry . column
if column :
out_file . write ( ' : %u ' % ( column ) )
out_file . write ( ' \n ' )
out_file . write ( ' \n Binary Images: \n ' )
for module in lldb . target . modules :
text_segment = module . section [ ' __TEXT ' ]
if text_segment :
text_segment_load_addr = text_segment . GetLoadAddress ( lldb . target )
if text_segment_load_addr != lldb . LLDB_INVALID_ADDRESS :
text_segment_end_load_addr = text_segment_load_addr + text_segment . size
identifier = module . file . basename
module_version = ' ??? '
module_version_array = module . GetVersion ( )
if module_version_array :
module_version = ' . ' . join ( map ( str , module_version_array ) )
out_file . write ( ' 0x %16.16x - 0x %16.16x %s ( %s - ???) < %s > %s \n ' % ( text_segment_load_addr , text_segment_end_load_addr , identifier , module_version , module . GetUUIDString ( ) , module . file . fullpath ) )
out_file . close ( )
else :
result . PutCString ( " error: invalid target " ) ;
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def Symbolicate ( debugger , command , result , dict ) :
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try :
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SymbolicateCrashLogs ( shlex . split ( command ) )
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except :
result . PutCString ( " error: python exception %s " % sys . exc_info ( ) [ 0 ] )
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def SymbolicateCrashLog ( crash_log , options ) :
if crash_log . error :
print crash_log . error
return
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if options . debug :
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crash_log . dump ( )
if not crash_log . images :
print ' error: no images in crash log '
return
<rdar://problem/11757916>
Make breakpoint setting by file and line much more efficient by only looking for inlined breakpoint locations if we are setting a breakpoint in anything but a source implementation file. Implementing this complex for a many reasons. Turns out that parsing compile units lazily had some issues with respect to how we need to do things with DWARF in .o files. So the fixes in the checkin for this makes these changes:
- Add a new setting called "target.inline-breakpoint-strategy" which can be set to "never", "always", or "headers". "never" will never try and set any inlined breakpoints (fastest). "always" always looks for inlined breakpoint locations (slowest, but most accurate). "headers", which is the default setting, will only look for inlined breakpoint locations if the breakpoint is set in what are consudered to be header files, which is realy defined as "not in an implementation source file".
- modify the breakpoint setting by file and line to check the current "target.inline-breakpoint-strategy" setting and act accordingly
- Modify compile units to be able to get their language and other info lazily. This allows us to create compile units from the debug map and not have to fill all of the details in, and then lazily discover this information as we go on debuggging. This is needed to avoid parsing all .o files when setting breakpoints in implementation only files (no inlines). Otherwise we would need to parse the .o file, the object file (mach-o in our case) and the symbol file (DWARF in the object file) just to see what the compile unit was.
- modify the "SymbolFileDWARFDebugMap" to subclass lldb_private::Module so that the virtual "GetObjectFile()" and "GetSymbolVendor()" functions can be intercepted when the .o file contenst are later lazilly needed. Prior to this fix, when we first instantiated the "SymbolFileDWARFDebugMap" class, we would also make modules, object files and symbol files for every .o file in the debug map because we needed to fix up the sections in the .o files with information that is in the executable debug map. Now we lazily do this in the DebugMapModule::GetObjectFile()
Cleaned up header includes a bit as well.
llvm-svn: 162860
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if options . dump_image_list :
print " Binary Images: "
for image in crash_log . images :
if options . verbose :
print image . debug_dump ( )
else :
print image
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target = crash_log . create_target ( )
if not target :
return
exe_module = target . GetModuleAtIndex ( 0 )
images_to_load = list ( )
loaded_images = list ( )
if options . load_all_images :
# --load-all option was specified, load everything up
for image in crash_log . images :
images_to_load . append ( image )
else :
# Only load the images found in stack frames for the crashed threads
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if options . crashed_only :
for thread in crash_log . threads :
if thread . did_crash ( ) :
for ident in thread . idents :
images = crash_log . find_images_with_identifier ( ident )
if images :
for image in images :
images_to_load . append ( image )
else :
print ' error: can \' t find image for identifier " %s " ' % ident
else :
for ident in crash_log . idents :
images = crash_log . find_images_with_identifier ( ident )
if images :
for image in images :
images_to_load . append ( image )
else :
print ' error: can \' t find image for identifier " %s " ' % ident
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for image in images_to_load :
if image in loaded_images :
print " warning: skipping %s loaded at %#16.16x duplicate entry (probably commpage) " % ( image . path , image . text_addr_lo )
else :
err = image . add_module ( target )
if err :
print err
else :
#print 'loaded %s' % image
loaded_images . append ( image )
for thread in crash_log . threads :
this_thread_crashed = thread . did_crash ( )
if options . crashed_only and this_thread_crashed == False :
continue
print " %s " % thread
#prev_frame_index = -1
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display_frame_idx = - 1
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for frame_idx , frame in enumerate ( thread . frames ) :
disassemble = ( this_thread_crashed or options . disassemble_all_threads ) and frame_idx < options . disassemble_depth ;
if frame_idx == 0 :
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symbolicated_frame_addresses = crash_log . symbolicate ( frame . pc , options . verbose )
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else :
# Any frame above frame zero and we have to subtract one to get the previous line entry
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symbolicated_frame_addresses = crash_log . symbolicate ( frame . pc - 1 , options . verbose )
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if symbolicated_frame_addresses :
symbolicated_frame_address_idx = 0
for symbolicated_frame_address in symbolicated_frame_addresses :
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display_frame_idx + = 1
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print ' [ %3u ] %s ' % ( frame_idx , symbolicated_frame_address )
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if ( options . source_all or thread . did_crash ( ) ) and display_frame_idx < options . source_frames and options . source_context :
source_context = options . source_context
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line_entry = symbolicated_frame_address . get_symbol_context ( ) . line_entry
if line_entry . IsValid ( ) :
strm = lldb . SBStream ( )
if line_entry :
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lldb . debugger . GetSourceManager ( ) . DisplaySourceLinesWithLineNumbers ( line_entry . file , line_entry . line , source_context , source_context , " -> " , strm )
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source_text = strm . GetData ( )
if source_text :
# Indent the source a bit
indent_str = ' '
join_str = ' \n ' + indent_str
print ' %s %s ' % ( indent_str , join_str . join ( source_text . split ( ' \n ' ) ) )
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if symbolicated_frame_address_idx == 0 :
if disassemble :
instructions = symbolicated_frame_address . get_instructions ( )
if instructions :
print
symbolication . disassemble_instructions ( target ,
instructions ,
frame . pc ,
options . disassemble_before ,
options . disassemble_after , frame . index > 0 )
print
symbolicated_frame_address_idx + = 1
else :
print frame
print
def CreateSymbolicateCrashLogOptions ( command_name , description , add_interactive_options ) :
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usage = " usage: % prog [options] <FILE> [FILE ...] "
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option_parser = optparse . OptionParser ( description = description , prog = ' crashlog ' , usage = usage )
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option_parser . add_option ( ' --verbose ' , ' -v ' , action = ' store_true ' , dest = ' verbose ' , help = ' display verbose debug info ' , default = False )
option_parser . add_option ( ' --debug ' , ' -g ' , action = ' store_true ' , dest = ' debug ' , help = ' display verbose debug logging ' , default = False )
option_parser . add_option ( ' --load-all ' , ' -a ' , action = ' store_true ' , dest = ' load_all_images ' , help = ' load all executable images, not just the images found in the crashed stack frames ' , default = False )
option_parser . add_option ( ' --images ' , action = ' store_true ' , dest = ' dump_image_list ' , help = ' show image list ' , default = False )
option_parser . add_option ( ' --debug-delay ' , type = ' int ' , dest = ' debug_delay ' , metavar = ' NSEC ' , help = ' pause for NSEC seconds for debugger ' , default = 0 )
option_parser . add_option ( ' --crashed-only ' , ' -c ' , action = ' store_true ' , dest = ' crashed_only ' , help = ' only symbolicate the crashed thread ' , default = False )
option_parser . add_option ( ' --disasm-depth ' , ' -d ' , type = ' int ' , dest = ' disassemble_depth ' , help = ' set the depth in stack frames that should be disassembled (default is 1) ' , default = 1 )
option_parser . add_option ( ' --disasm-all ' , ' -D ' , action = ' store_true ' , dest = ' disassemble_all_threads ' , help = ' enabled disassembly of frames on all threads (not just the crashed thread) ' , default = False )
option_parser . add_option ( ' --disasm-before ' , ' -B ' , type = ' int ' , dest = ' disassemble_before ' , help = ' the number of instructions to disassemble before the frame PC ' , default = 4 )
option_parser . add_option ( ' --disasm-after ' , ' -A ' , type = ' int ' , dest = ' disassemble_after ' , help = ' the number of instructions to disassemble after the frame PC ' , default = 4 )
option_parser . add_option ( ' --source-context ' , ' -C ' , type = ' int ' , metavar = ' NLINES ' , dest = ' source_context ' , help = ' show NLINES source lines of source context (default = 4) ' , default = 4 )
option_parser . add_option ( ' --source-frames ' , type = ' int ' , metavar = ' NFRAMES ' , dest = ' source_frames ' , help = ' show source for NFRAMES (default = 4) ' , default = 4 )
option_parser . add_option ( ' --source-all ' , action = ' store_true ' , dest = ' source_all ' , help = ' show source for all threads, not just the crashed thread ' , default = False )
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if add_interactive_options :
option_parser . add_option ( ' -i ' , ' --interactive ' , action = ' store_true ' , help = ' parse all crash logs and enter interactive mode ' , default = False )
return option_parser
def SymbolicateCrashLogs ( command_args ) :
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description = ''' Symbolicate one or more darwin crash log files to provide source file and line information,
inlined stack frames back to the concrete functions , and disassemble the location of the crash
for the first frame of the crashed thread .
If this script is imported into the LLDB command interpreter , a " crashlog " command will be added to the interpreter
for use at the LLDB command line . After a crash log has been parsed and symbolicated , a target will have been
created that has all of the shared libraries loaded at the load addresses found in the crash log file . This allows
you to explore the program as if it were stopped at the locations described in the crash log and functions can
be disassembled and lookups can be performed using the addresses found in the crash log . '''
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option_parser = CreateSymbolicateCrashLogOptions ( ' crashlog ' , description , True )
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try :
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( options , args ) = option_parser . parse_args ( command_args )
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except :
return
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if options . debug :
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print ' command_args = %s ' % command_args
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print ' options ' , options
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print ' args ' , args
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if options . debug_delay > 0 :
print " Waiting %u seconds for debugger to attach... " % options . debug_delay
time . sleep ( options . debug_delay )
error = lldb . SBError ( )
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if args :
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if options . interactive :
interactive_crashlogs ( options , args )
else :
for crash_log_file in args :
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crash_log = CrashLog ( crash_log_file )
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SymbolicateCrashLog ( crash_log , options )
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if __name__ == ' __main__ ' :
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# Create a new debugger instance
lldb . debugger = lldb . SBDebugger . Create ( )
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SymbolicateCrashLogs ( sys . argv [ 1 : ] )
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elif getattr ( lldb , ' debugger ' , None ) :
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lldb . debugger . HandleCommand ( ' command script add -f lldb.macosx.crashlog.Symbolicate crashlog ' )
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lldb . debugger . HandleCommand ( ' command script add -f lldb.macosx.crashlog.save_crashlog save_crashlog ' )
print ' " crashlog " and " save_crashlog " command installed, use the " --help " option for detailed help '
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