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lldbmacros.py
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lldbmacros.py
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import lldb
import re
import getopt
# Note: This module will eventually contain loads of macros. So please bear with the Macro/EndMacro comments
# Global functions
def findGlobal(variable):
return lldb.target.FindGlobalVariables(variable, 0).GetValueAtIndex(0)
def findGlobalValue(variable):
return findGlobal(variable).GetValue()
def readMemberUnsigned(variable,member):
return variable.GetChildMemberWithName(member).GetValueAsUnsigned(0)
def readMemberSigned(variable,member):
return variable.GetChildMemberWithName(member).GetValueAsSigned()
def readMemberString(variable,member):
return str(variable.GetChildMemberWithName(member).GetSummary()).strip('"')
class Output :
"""
An output handler for all command. Use Output.print to direct all output of macro via the handler.
Currently this provide capabilities
-o path/to/filename
The output of this command execution will be saved to file. Parser information or errors will
not be sent to file though. eg /tmp/output.txt
-s filter_string
the "filter_string" param is parsed to python regex expression and each line of output
will be printed/saved only if it matches the expression.
The command header will not be filtered in any case.
"""
STDOUT =1
FILEOUT =2
FILTER =False
def __init__(self):
self.out = Output.STDOUT
self.fname=None
self.fhandle=None
self.FILTER=False
def printString(self, s):
""" Handler for all commands output. By default just print to stdout """
if self.FILTER and not self.reg.search(s): return
if self.out == Output.STDOUT: print s
elif self.out == Output.FILEOUT : self.fhandle.write(s+"\n")
def printHeader(self,s):
if self.out == Output.STDOUT: print s
elif self.out == Output.FILEOUT: self.fhandle.write(s+"\n")
def done(self):
""" closes any open files. report on any errors """
if self.fhandle != None :
self.fhandle.close()
def setOptions(self,args):
""" parse the arguments passed to the command
param : args => [] of <str> (typically args.split())
"""
opts=()
try:
opts,args = getopt.getopt(args,'o:s:',[])
except getopt.GetoptError,err:
print str(err)
#continue with processing
for o,a in opts :
if o == "-o" and len(a) > 0:
self.fname=a.strip()
self.fhandle=open(self.fname,"w")
self.out = Output.FILEOUT
print "saving results in file ",str(a)
elif o == "-s" and len(a) > 0:
self.reg = re.compile(a.strip(),re.MULTILINE|re.DOTALL)
self.FILTER=True
print "showing results for regex:",a.strip()
else :
print "Error: unknown option ",o,a
# Inteface function for showallkexts command
def showallkexts_command(debugger, args, result, lldb_dict):
kext_summary_header = findGlobal("gLoadedKextSummaries")
result.Printf(_summarizeallkexts(kext_summary_header))
return None
# Interface function for loaded kext summary formatter
def showallkexts_summary(kext_summary_header, lldb_dict):
return "\n" + _summarizeallkexts(kext_summary_header)
# Internal function for walking kext summaries
def _summarizeallkexts(kext_summary_header):
summary = "ID Address Size Version Name\n"
summaries = kext_summary_header.GetChildMemberWithName("summaries")
count = int(kext_summary_header.GetChildMemberWithName("numSummaries").GetValue())
for i in range(0, count):
summary += summaries.GetChildAtIndex(i, lldb.eNoDynamicValues, True).GetSummary() + "\n"
return summary
# Macro: memstats
def memstats_command(debugger,args,result,lldb_dict):
stream = Output()
stream.setOptions(args.split())
memstats(stream)
stream.done()
def memstats(ostream):
ostream.printString ( "kern_memorystatus_level: {0}".format(findGlobalValue("kern_memorystatus_level")) )
ostream.printString ( "vm_page_throttled_count: {0}".format(findGlobalValue("vm_page_throttled_count")) )
ostream.printString ( "vm_page_active_count: {0}".format(findGlobalValue("vm_page_active_count")) )
ostream.printString ( "vm_page_inactive_count: {0}".format(findGlobalValue("vm_page_inactive_count")) )
ostream.printString ( "vm_page_wire_count: {0}".format(findGlobalValue("vm_page_wire_count")) )
ostream.printString ( "vm_page_free_count: {0}".format(findGlobalValue("vm_page_free_count")) )
ostream.printString ( "vm_page_purgeable_count: {0}".format(findGlobalValue("vm_page_purgeable_count")) )
ostream.printString ( "vm_page_inactive_target: {0}".format(findGlobalValue("vm_page_inactive_target")) )
ostream.printString ( "vm_page_free_target: {0}".format(findGlobalValue("vm_page_free_target")) )
ostream.printString ( "insue_ptepages_count: {0}".format(findGlobalValue("inuse_ptepages_count")) )
ostream.printString ( "vm_page_free_reserved: {0}".format(findGlobalValue("vm_page_free_reserved")) )
# EndMacro: memstats
# Macro: zprint
def zprint_command(debugger,args,result,lldb_dict):
stream = Output()
stream.setOptions(args.split())
_zprint(stream)
stream.done()
def _zprint(ostream):
"""Display info about memory zones"""
ostream.printHeader ( "{0: ^20s} {1: >5s} {2: >12s} {3: >12s} {4: >7s} {5: >8s} {6: >9s} {7: >8s} {8: <20s} {9} ".format('ZONE', 'COUNT', 'TOT_SZ', 'MAX_SZ', 'ELT_SZ', 'ALLOC_SZ', 'TOT_ALLOC', 'TOT_FREE', 'NAME','') )
format_string = '{0: >#020x} {1: >5d} {2: >12d} {3: >12d} {4: >7d} {5: >8d} {6: >9d} {7: >8d} {8: <20s} {9}'
zone_ptr = findGlobal("first_zone");
while zone_ptr.GetValueAsUnsigned() != 0 :
addr = zone_ptr.GetValueAsUnsigned()
count = readMemberUnsigned(zone_ptr, "count")
cur_size = readMemberUnsigned(zone_ptr, "cur_size")
max_size = readMemberUnsigned(zone_ptr, "max_size")
elem_size = readMemberUnsigned(zone_ptr, "elem_size")
alloc_size = readMemberUnsigned(zone_ptr, "alloc_size")
num_allocs = readMemberUnsigned(zone_ptr, "num_allocs")
num_frees = readMemberUnsigned(zone_ptr, "num_frees")
name = str(readMemberString(zone_ptr, "zone_name"))
markings=""
if str(zone_ptr.GetChildMemberWithName("exhaustible").GetValue()) == '1' : markings+="H"
if str(zone_ptr.GetChildMemberWithName("collectable").GetValue()) == '1' : markings+="C"
if str(zone_ptr.GetChildMemberWithName("expandable").GetValue()) == '1' : markings+="X"
if str(zone_ptr.GetChildMemberWithName("noencrypt").GetValue()) == '1' : markings+="$"
ostream.printString(format_string.format(addr, count, cur_size, max_size, elem_size, alloc_size, num_allocs, num_frees, name, markings))
zone_ptr = zone_ptr.GetChildMemberWithName("next_zone")
return None
# EndMacro: zprint
# Macro: showioalloc
def showioalloc_command(debugger,args,result,lldb_dict):
stream = Output()
stream.setOptions(args.split())
_showioalloc(stream)
stream.done()
def _showioalloc(ostream):
ivars_size = findGlobal("debug_ivars_size").GetValueAsUnsigned()
container_malloc_size = findGlobal("debug_container_malloc_size").GetValueAsUnsigned()
iomalloc_size = findGlobal("debug_iomalloc_size").GetValueAsUnsigned()
iomallocpageable_size = findGlobal("debug_iomallocpageable_size").GetValueAsUnsigned()
ostream.printString("Instance allocation = {0:#0x} = {1:d} K".format(ivars_size, (int)(ivars_size/1024)))
ostream.printString("Container allocation = {0:#0x} = {1:d} K".format(container_malloc_size,(int)(container_malloc_size/1024)))
ostream.printString("IOMalloc allocation = {0:#0x} = {1:d} K".format(iomalloc_size,(int)(iomalloc_size/1024)))
ostream.printString("Pageable allocation = {0:#0x} = {1:d} K".format(iomallocpageable_size,(int)(iomallocpageable_size/1024)))
return None
# EndMacro: showioalloc