def GetKextSymbolInfo(load_addr):
""" Get a string descriptiong load_addr <kextname> + offset
params:
load_addr - int address value of pc in backtrace.
returns: str - kext name + offset string. If no cached data available, warning message is returned.
"""
symbol_name = "None"
symbol_offset = load_addr
kmod_val = kern.globals.kmod
if not kern.arch.startswith('arm64'):
for kval in IterateLinkedList(kmod_val, 'next'):
if load_addr >= unsigned(kval.address) and \
load_addr <= (unsigned(kval.address) + unsigned(kval.size)):
symbol_name = kval.name
symbol_offset = load_addr - unsigned(kval.address)
break
return "{:#018x} {:s} + {:#x} \n".format(load_addr, symbol_name, symbol_offset)
# only for arm64 we do lookup for split kexts.
cached_kext_info = caching.GetDynamicCacheData("kern.kexts.loadinformation", [])
if not cached_kext_info and str(GetConnectionProtocol()) == "core":
cached_kext_info = GetKextLoadInformation()
if not cached_kext_info:
return "{:#018x} ~ kext info not available. please run 'showallkexts' once ~ \n".format(load_addr)
for kval in cached_kext_info:
text_seg = kval[5]
if load_addr >= text_seg.vmaddr and \
load_addr <= (text_seg.vmaddr + text_seg.vmsize):
symbol_name = kval[2]
symbol_offset = load_addr - text_seg.vmaddr
break
return "{:#018x} {:s} + {:#x} \n".format(load_addr, symbol_name, symbol_offset)
def readMemory(self, address, size):
cache_key = "{}-{}-{}".format(hex(self.task), hex(address), size)
cache_data = caching.GetDynamicCacheData(cache_key)
if cache_data:
return self.encodeByteString(cache_data)
data = GetUserDataAsString(self.task, address, size)
if not data:
logging.error(
"Failed to read memory task:{: <#018x} {: <#018x} {:d}".format(
self.task, address, size))
else:
caching.SaveDynamicCacheData(cache_key, data)
return self.encodeByteString(data)
