tools/lldbmacros/core/kernelcore.py

   1
   2 """ Please make sure you read the README COMPLETELY BEFORE reading anything below.
   3     It is very critical that you read coding guidelines in Section E in README file.
   4 """
   5
   6 from cvalue import *
   7 from lazytarget import *
   8 from configuration import *
   9 from utils import *
  10 import caching
  11 import lldb
  12
  13 def IterateTAILQ_HEAD(headval, element_name):
  14     """ iterate over a TAILQ_HEAD in kernel. refer to bsd/sys/queue.h
  15         params:
  16             headval     - value : value object representing the head of the list
  17             element_name- str          :  string name of the field which holds the list links.
  18         returns:
  19             A generator does not return. It is used for iterating.
  20             value : an object that is of type as headval->tqh_first. Always a pointer object
  21         example usage:
  22           list_head = kern.GetGlobalVariable('mountlist')
  23           for entryobj in IterateTAILQ_HEAD(list_head, 'mnt_list'):
  24             print GetEntrySummary(entryobj)
  25     """
  26     iter_val = headval.tqh_first
  27     while unsigned(iter_val) != 0 :
  28         yield iter_val
  29         iter_val = iter_val.__getattr__(element_name).tqe_next
  30     #end of yield loop
  31
  32 def IterateLinkedList(element, field_name):
  33     """ iterate over a linked list.
  34         This is equivalent to elt = element; while(elt) { do_work(elt); elt = elt-><field_name>; }
  35         params:
  36             element - value : value object representing element in the list.
  37             field_name - str       : name of field that holds pointer to next element
  38         returns: Nothing. This is used as iterable
  39         example usage:
  40             first_zone = kern.GetGlobalVariable('first_zone')
  41             for zone in IterateLinkedList(first_zone, 'next_zone'):
  42                 print GetZoneSummary(zone)
  43     """
  44     elt = element
  45     while unsigned(elt) != 0:
  46         yield elt
  47         elt = elt.__getattr__(field_name)
  48     #end of while loop
  49
  50 def IterateListEntry(element, element_type, field_name, list_prefix=''):
  51     """ iterate over a list as defined with LIST_HEAD in bsd/sys/queue.h
  52         params:
  53             element      - value : Value object for lh_first
  54             element_type - str   : Type of the next element
  55             field_name   - str   : Name of the field in next element's structure
  56             list_prefix  - str   : use 's' here to iterate SLIST_HEAD instead
  57         returns:
  58             A generator does not return. It is used for iterating
  59             value  : an object thats of type (element_type) head->le_next. Always a pointer object
  60         example usage:
  61             headp = kern.globals.initproc.p_children
  62             for pp in IterateListEntry(headp, 'struct proc *', 'p_sibling'):
  63                 print GetProcInfo(pp)
  64     """
  65     elt = element.__getattr__(list_prefix + 'lh_first')
  66     if type(element_type) == str:
  67         element_type = gettype(element_type)
  68     while unsigned(elt) != 0:
  69         yield elt
  70         next_el = elt.__getattr__(field_name).__getattr__(list_prefix + 'le_next')
  71         elt = cast(next_el, element_type)
  72
  73 def IterateLinkageChain(queue_head, element_type, field_name, field_ofst=0):
  74     """ Iterate over a Linkage Chain queue in kernel of type queue_head_t. (osfmk/kern/queue.h method 1)
  75         This is equivalent to the qe_foreach_element() macro
  76         params:
  77             queue_head   - value       : Value object for queue_head.
  78             element_type - lldb.SBType : pointer type of the element which contains the queue_chain_t. Typically its structs like thread, task etc..
  79                          - str         : OR a string describing the type. ex. 'task *'
  80             field_name   - str         : Name of the field (in element) which holds a queue_chain_t
  81             field_ofst   - int         : offset from the 'field_name' (in element) which holds a queue_chain_t
  82                                          This is mostly useful if a particular element contains an array of queue_chain_t
  83         returns:
  84             A generator does not return. It is used for iterating.
  85             value  : An object thats of type (element_type). Always a pointer object
  86         example usage:
  87             coalq = kern.GetGlobalVariable('coalitions_q')
  88             for coal in IterateLinkageChain(coalq, 'struct coalition *', 'coalitions'):
  89                 print GetCoalitionInfo(coal)
  90     """
  91     global kern
  92     if type(element_type) == str:
  93         element_type = gettype(element_type)
  94
  95     if unsigned(queue_head) == 0:
  96         return
  97
  98     if element_type.IsPointerType():
  99         elem_ofst = getfieldoffset(element_type.GetPointeeType(), field_name) + field_ofst
 100     else:
 101         elem_ofst = getfieldoffset(element_type, field_name) + field_ofst
 102
 103     link = queue_head.next
 104     while (unsigned(link) != unsigned(queue_head)):
 105         addr = unsigned(link) - elem_ofst;
 106         # I can't use the GetValueFromAddress function of the kernel class
 107         # because I have no instance of that class!
 108         obj = value(link.GetSBValue().CreateValueFromExpression(None,'(void *)'+str(addr)))
 109         obj = cast(obj, element_type)
 110         yield obj
 111         link = link.next
 112
 113
 114 def IterateQueue(queue_head, element_ptr_type, element_field_name, backwards=False, unpack_ptr_fn=None):
 115     """ Iterate over an Element Chain queue in kernel of type queue_head_t. (osfmk/kern/queue.h method 2)
 116         params:
 117             queue_head         - value : Value object for queue_head.
 118             element_ptr_type   - lldb.SBType : a pointer type of the element 'next' points to. Typically its structs like thread, task etc..
 119                                - str         : OR a string describing the type. ex. 'task *'
 120             element_field_name - str : name of the field in target struct.
 121             backwards          - backwards : traverse the queue backwards
 122             unpack_ptr_fn      - function : a function ptr of signature def unpack_ptr(long v) which returns long.
 123         returns:
 124             A generator does not return. It is used for iterating.
 125             value  : an object thats of type (element_type) queue_head->next. Always a pointer object
 126         example usage:
 127             for page_meta in IterateQueue(kern.globals.first_zone.pages.all_free, 'struct zone_page_metadata *', 'pages'):
 128                 print page_meta
 129     """
 130     if type(element_ptr_type) == str :
 131         element_ptr_type = gettype(element_ptr_type)
 132
 133     queue_head = queue_head.GetSBValue()
 134     queue_head_addr = 0x0
 135     if queue_head.TypeIsPointerType():
 136         queue_head_addr = queue_head.GetValueAsUnsigned()
 137     else:
 138         queue_head_addr = queue_head.GetAddress().GetLoadAddress(LazyTarget.GetTarget())
 139
 140     def unpack_ptr_and_recast(v):
 141         if unpack_ptr_fn is None:
 142             return v
 143         v_unpacked = unpack_ptr_fn(v.GetValueAsUnsigned())
 144         obj = v.CreateValueFromExpression(None,'(void *)'+str(v_unpacked))
 145         obj.Cast(element_ptr_type)
 146         return obj
 147
 148     if backwards:
 149         cur_elt = unpack_ptr_and_recast(queue_head.GetChildMemberWithName('prev'))
 150     else:
 151         cur_elt = unpack_ptr_and_recast(queue_head.GetChildMemberWithName('next'))
 152
 153     while True:
 154
 155         if not cur_elt.IsValid() or cur_elt.GetValueAsUnsigned() == 0 or cur_elt.GetValueAsUnsigned() == queue_head_addr:
 156             break
 157         elt = cur_elt.Cast(element_ptr_type)
 158         yield value(elt)
 159         if backwards:
 160             cur_elt = unpack_ptr_and_recast(elt.GetChildMemberWithName(element_field_name).GetChildMemberWithName('prev'))
 161         else:
 162             cur_elt = unpack_ptr_and_recast(elt.GetChildMemberWithName(element_field_name).GetChildMemberWithName('next'))
 163
 164
 165 def IterateRBTreeEntry(element, element_type, field_name):
 166     """ iterate over a rbtree as defined with RB_HEAD in libkern/tree.h
 167             element      - value : Value object for rbh_root
 168             element_type - str   : Type of the link element
 169             field_name   - str   : Name of the field in link element's structure
 170         returns:
 171             A generator does not return. It is used for iterating
 172             value  : an object thats of type (element_type) head->sle_next. Always a pointer object
 173     """
 174     elt = element.__getattr__('rbh_root')
 175     if type(element_type) == str:
 176         element_type = gettype(element_type)
 177
 178     # Walk to find min
 179     parent = elt
 180     while unsigned(elt) != 0:
 181         parent = elt
 182         elt = cast(elt.__getattr__(field_name).__getattr__('rbe_left'), element_type)
 183     elt = parent
 184
 185     # Now elt is min
 186     while unsigned(elt) != 0:
 187         yield elt
 188         # implementation cribbed from RB_NEXT in libkern/tree.h
 189         right = cast(elt.__getattr__(field_name).__getattr__('rbe_right'), element_type)
 190         if unsigned(right) != 0:
 191             elt = right
 192             left = cast(elt.__getattr__(field_name).__getattr__('rbe_left'), element_type)
 193             while unsigned(left) != 0:
 194                 elt = left
 195                 left = cast(elt.__getattr__(field_name).__getattr__('rbe_left'), element_type)
 196         else:
 197
 198             # avoid using GetValueFromAddress
 199             addr = elt.__getattr__(field_name).__getattr__('rbe_parent')&~1
 200             parent = value(elt.GetSBValue().CreateValueFromExpression(None,'(void *)'+str(addr)))
 201             parent = cast(parent, element_type)
 202
 203             if unsigned(parent) != 0:
 204                 left = cast(parent.__getattr__(field_name).__getattr__('rbe_left'), element_type)
 205             if (unsigned(parent) != 0) and (unsigned(elt) == unsigned(left)):
 206                 elt = parent
 207             else:
 208                 if unsigned(parent) != 0:
 209                     right = cast(parent.__getattr__(field_name).__getattr__('rbe_right'), element_type)
 210                 while unsigned(parent) != 0 and (unsigned(elt) == unsigned(right)):
 211                     elt = parent
 212
 213                     # avoid using GetValueFromAddress
 214                     addr = elt.__getattr__(field_name).__getattr__('rbe_parent')&~1
 215                     parent = value(elt.GetSBValue().CreateValueFromExpression(None,'(void *)'+str(addr)))
 216                     parent = cast(parent, element_type)
 217
 218                     right = cast(parent.__getattr__(field_name).__getattr__('rbe_right'), element_type)
 219
 220                 # avoid using GetValueFromAddress
 221                 addr = elt.__getattr__(field_name).__getattr__('rbe_parent')&~1
 222                 elt = value(elt.GetSBValue().CreateValueFromExpression(None,'(void *)'+str(addr)))
 223                 elt = cast(elt, element_type)
 224
 225
 226 def IteratePriorityQueue(root, element_type, field_name):
 227     """ iterate over a priority queue as defined with struct priority_queue from osfmk/kern/priority_queue.h
 228             root         - value : Value object for the priority queue
 229             element_type - str   : Type of the link element
 230             field_name   - str   : Name of the field in link element's structure
 231         returns:
 232             A generator does not return. It is used for iterating
 233             value  : an object thats of type (element_type). Always a pointer object
 234     """
 235     def _make_pqe(addr):
 236         return value(root.GetSBValue().CreateValueFromExpression(None,'(struct priority_queue_entry *)'+str(addr)))
 237
 238     queue = [unsigned(root.pq_root_packed) & ~3]
 239
 240     while len(queue):
 241         elt = _make_pqe(queue.pop())
 242
 243         while elt:
 244             yield containerof(elt, element_type, field_name)
 245             addr = unsigned(elt.child)
 246             if addr: queue.append(addr)
 247             elt = elt.next
 248
 249 def IterateMPSCQueue(root, element_type, field_name):
 250     """ iterate over an MPSC queue as defined with struct mpsc_queue_head from osfmk/kern/mpsc_queue.h
 251             root         - value : Value object for the mpsc queue
 252             element_type - str   : Type of the link element
 253             field_name   - str   : Name of the field in link element's structure
 254         returns:
 255             A generator does not return. It is used for iterating
 256             value  : an object thats of type (element_type). Always a pointer object
 257     """
 258     elt = root.mpqh_head.mpqc_next
 259     while unsigned(elt):
 260         yield containerof(elt, element_type, field_name)
 261         elt = elt.mpqc_next
 262
 263 class KernelTarget(object):
 264     """ A common kernel object that provides access to kernel objects and information.
 265         The class holds global lists for  task, terminated_tasks, procs, zones, zombroc etc.
 266         It also provides a way to symbolicate an address or create a value from an address.
 267     """
 268     def __init__(self, debugger):
 269         """ Initialize the kernel debugging environment.
 270             Target properties like architecture and connectedness are lazy-evaluted.
 271         """
 272         self._debugger = debugger # This holds an lldb.SBDebugger object for debugger state
 273         self._threads_list = []
 274         self._tasks_list = []
 275         self._coalitions_list = []
 276         self._thread_groups = []
 277         self._allproc = []
 278         self._terminated_tasks_list = []
 279         self._zones_list = []
 280         self._zombproc_list = []
 281         self._kernel_types_cache = {} #this will cache the Type objects as and when requested.
 282         self._version = None
 283         self._arch = None
 284         self._ptrsize = None # pointer size of kernel, not userspace
 285         self.symbolicator = None
 286         class _GlobalVariableFind(object):
 287             def __init__(self, kern):
 288                 self._xnu_kernobj_12obscure12 = kern
 289             def __getattr__(self, name):
 290                 v = self._xnu_kernobj_12obscure12.GetGlobalVariable(name)
 291                 if not v.GetSBValue().IsValid():
 292                     raise ValueError('No such global variable by name: %s '%str(name))
 293                 return v
 294         self.globals = _GlobalVariableFind(self)
 295         LazyTarget.Initialize(debugger)
 296
 297     def _GetSymbolicator(self):
 298         """ Internal function: To initialize the symbolication from lldb.utils
 299         """
 300         if not self.symbolicator is None:
 301             return self.symbolicator
 302
 303         from lldb.utils import symbolication
 304         symbolicator = symbolication.Symbolicator()
 305         symbolicator.target = LazyTarget.GetTarget()
 306         self.symbolicator = symbolicator
 307         return self.symbolicator
 308
 309     def Symbolicate(self, addr):
 310         """ simple method to get name of function/variable from an address. this is equivalent of gdb 'output /a 0xaddress'
 311             params:
 312                 addr - int : typically hex value like 0xffffff80002c0df0
 313             returns:
 314                 str - '' if no symbol found else the symbol name.
 315             Note: this function only finds the first symbol. If you expect multiple symbol conflict please use SymbolicateFromAddress()
 316         """
 317         ret_str = ''
 318         syms = self.SymbolicateFromAddress(addr)
 319         if len(syms) > 0:
 320             ret_str +=syms[0].GetName()
 321         return ret_str
 322
 323     def SymbolicateFromAddress(self, addr):
 324         """ symbolicates any given address based on modules loaded in the target.
 325             params:
 326                 addr - int : typically hex value like 0xffffff80002c0df0
 327             returns:
 328                 [] of SBSymbol: In case we don't find anything than empty array is returned.
 329                       Note: a type of symbol can be figured out by gettype() function of SBSymbol.
 330             example usage:
 331                 syms = kern.Symbolicate(0xffffff80002c0df0)
 332                 for s in syms:
 333                   if s.GetType() == lldb.eSymbolTypeCode:
 334                     print "Function", s.GetName()
 335                   if s.GetType() == lldb.eSymbolTypeData:
 336                     print "Variable", s.GetName()
 337         """
 338         if type(int(1)) != type(addr):
 339             if str(addr).strip().find("0x") == 0 :
 340                 addr = int(addr, 16)
 341             else:
 342                 addr = int(addr)
 343         addr = self.StripKernelPAC(addr)
 344         ret_array = []
 345         symbolicator = self._GetSymbolicator()
 346         syms = symbolicator.symbolicate(addr)
 347         if not syms:
 348             return ret_array
 349         for s in syms:
 350             ret_array.append(s.get_symbol_context().symbol)
 351         return ret_array
 352
 353     def IsDebuggerConnected(self):
 354         proc_state = LazyTarget.GetProcess().state
 355         if proc_state == lldb.eStateInvalid : return False
 356         if proc_state in [lldb.eStateStopped, lldb.eStateSuspended] : return True
 357
 358     def GetGlobalVariable(self, name):
 359         """ Get the value object representation for a kernel global variable
 360             params:
 361               name : str - name of the variable. ex. version
 362             returns: value - python object representing global variable.
 363             raises : Exception in case the variable is not found.
 364         """
 365         self._globals_cache_dict = caching.GetDynamicCacheData("kern._globals_cache_dict", {})
 366         if name not in self._globals_cache_dict:
 367             self._globals_cache_dict[name] = value(LazyTarget.GetTarget().FindGlobalVariables(name, 1).GetValueAtIndex(0))
 368         return self._globals_cache_dict[name]
 369
 370     def GetLoadAddressForSymbol(self, name):
 371         """ Get the load address of a symbol in the kernel.
 372             params:
 373               name : str - name of the symbol to lookup
 374             returns: int - the load address as an integer. Use GetValueFromAddress to cast to a value.
 375             raises : LookupError - if the symbol is not found.
 376         """
 377         name = str(name)
 378         target = LazyTarget.GetTarget()
 379         syms_arr = target.FindSymbols(name)
 380         if syms_arr.IsValid() and len(syms_arr) > 0:
 381             symbol = syms_arr[0].GetSymbol()
 382             if symbol.IsValid():
 383                 return int(symbol.GetStartAddress().GetLoadAddress(target))
 384
 385         raise LookupError("Symbol not found: " + name)
 386
 387     def GetValueFromAddress(self, addr, type_str = 'void *'):
 388         """ convert a address to value
 389             params:
 390                 addr - int : typically hex value like 0xffffff80008dc390
 391                 type_str - str: type to cast to. Default type will be void *
 392             returns:
 393                 value : a value object which has address as addr and type is type_str
 394         """
 395         obj = value(self.globals.version.GetSBValue().CreateValueFromExpression(None,'(void *)'+str(addr)))
 396         obj = cast(obj, type_str)
 397         return obj
 398
 399     def GetValueAsType(self, v, t):
 400         """ Retrieves a global variable 'v' of type 't' wrapped in a vue object.
 401             If 'v' is an address, creates a vue object of the appropriate type.
 402             If 'v' is a name, looks for the global variable and asserts its type.
 403             Throws:
 404                 NameError - If 'v' cannot be found
 405                 TypeError - If 'v' is of the wrong type
 406         """
 407         if islong(v):
 408             return self.GetValueFromAddress(v, t)
 409         else:
 410             var = LazyTarget.GetTarget().FindGlobalVariables(v, 1)[0]
 411             if not var:
 412                 raise NameError("Failed to find global variable '{0}'".format(v))
 413             if var.GetTypeName() != t:
 414                 raise TypeError("{0} must be of type '{1}', not '{2}'".format(v, t, var.GetTypeName()))
 415             return value(var)
 416
 417     def _GetIterator(self, iter_head_name, next_element_name='next', iter_head_type=None):
 418         """ returns an iterator for a collection in kernel memory.
 419             params:
 420                 iter_head_name - str : name of queue_head or list head variable.
 421                 next_element_name - str : name of the element that leads to next element.
 422                                           for ex. in struct zone list 'next_zone' is the linking element.
 423             returns:
 424                 iterable : typically used in conjunction with "for varname in iterable:"
 425         """
 426         head_element = self.GetGlobalVariable(iter_head_name)
 427         return head_element.GetSBValue().linked_list_iter(next_element_name)
 428
 429     def TruncPage(self, addr):
 430         return (addr & ~(unsigned(self.GetGlobalVariable("page_size")) - 1))
 431
 432     def RoundPage(self, addr):
 433         return trunc_page(addr + unsigned(self.GetGlobalVariable("page_size")) - 1)
 434
 435     def StraddlesPage(self, addr, size):
 436         if size > unsigned(self.GetGlobalVariable("page_size")):
 437             return True
 438         val = ((addr + size) & (unsigned(self.GetGlobalVariable("page_size"))-1))
 439         return (val < size and val > 0)
 440
 441     def StripUserPAC(self, addr):
 442         if self.arch != 'arm64e':
 443             return addr
 444         T0Sz = self.GetGlobalVariable('gT0Sz')
 445         return StripPAC(addr, T0Sz)
 446
 447     def StripKernelPAC(self, addr):
 448         if self.arch != 'arm64e':
 449             return addr
 450         T1Sz = self.GetGlobalVariable('gT1Sz')
 451         return StripPAC(addr, T1Sz)
 452
 453     def PhysToKVARM64(self, addr):
 454         ptov_table = self.GetGlobalVariable('ptov_table')
 455         for i in range(0, self.GetGlobalVariable('ptov_index')):
 456             if (addr >= long(unsigned(ptov_table[i].pa))) and (addr < (long(unsigned(ptov_table[i].pa)) + long(unsigned(ptov_table[i].len)))):
 457                 return (addr - long(unsigned(ptov_table[i].pa)) + long(unsigned(ptov_table[i].va)))
 458         return (addr - unsigned(self.GetGlobalVariable("gPhysBase")) + unsigned(self.GetGlobalVariable("gVirtBase")))
 459
 460     def PhysToKernelVirt(self, addr):
 461         if self.arch == 'x86_64':
 462             return (addr + unsigned(self.GetGlobalVariable('physmap_base')))
 463         elif self.arch.startswith('arm64'):
 464             return self.PhysToKVARM64(addr)
 465         elif self.arch.startswith('arm'):
 466             return (addr - unsigned(self.GetGlobalVariable("gPhysBase")) + unsigned(self.GetGlobalVariable("gVirtBase")))
 467         else:
 468             raise ValueError("PhysToVirt does not support {0}".format(self.arch))
 469
 470     def GetNanotimeFromAbstime(self, abstime):
 471         """ convert absolute time (which is in MATUs) to nano seconds.
 472             Since based on architecture the conversion may differ.
 473             params:
 474                 abstime - int absolute time as shown by mach_absolute_time
 475             returns:
 476                 int - nanosecs of time
 477         """
 478         usec_divisor = caching.GetStaticCacheData("kern.rtc_usec_divisor", None)
 479         if not usec_divisor:
 480             if self.arch == 'x86_64':
 481                 usec_divisor = 1000
 482             else:
 483                 rtclockdata_addr = self.GetLoadAddressForSymbol('RTClockData')
 484                 rtc = self.GetValueFromAddress(rtclockdata_addr, 'struct _rtclock_data_ *')
 485                 usec_divisor = unsigned(rtc.rtc_usec_divisor)
 486             usec_divisor = int(usec_divisor)
 487             caching.SaveStaticCacheData('kern.rtc_usec_divisor', usec_divisor)
 488         nsecs = (abstime * 1000)/usec_divisor
 489         return nsecs
 490
 491     def __getattribute__(self, name):
 492         if name == 'zones' :
 493             self._zones_list = caching.GetDynamicCacheData("kern._zones_list", [])
 494             if len(self._zones_list) > 0: return self._zones_list
 495             zone_array = self.GetGlobalVariable('zone_array')
 496             for i in range(0, self.GetGlobalVariable('num_zones')):
 497                 self._zones_list.append(addressof(zone_array[i]))
 498             caching.SaveDynamicCacheData("kern._zones_list", self._zones_list)
 499             return self._zones_list
 500
 501         if name == 'threads' :
 502             self._threads_list = caching.GetDynamicCacheData("kern._threads_list", [])
 503             if len(self._threads_list) > 0 : return self._threads_list
 504             thread_queue_head = self.GetGlobalVariable('threads')
 505             thread_type = LazyTarget.GetTarget().FindFirstType('thread')
 506             thread_ptr_type = thread_type.GetPointerType()
 507             for th in IterateQueue(thread_queue_head, thread_ptr_type, 'threads'):
 508                 self._threads_list.append(th)
 509             caching.SaveDynamicCacheData("kern._threads_list", self._threads_list)
 510             return self._threads_list
 511
 512         if name == 'tasks' :
 513             self._tasks_list = caching.GetDynamicCacheData("kern._tasks_list", [])
 514             if len(self._tasks_list) > 0 : return self._tasks_list
 515             task_queue_head = self.GetGlobalVariable('tasks')
 516             task_type = LazyTarget.GetTarget().FindFirstType('task')
 517             task_ptr_type = task_type.GetPointerType()
 518             for tsk in IterateQueue(task_queue_head, task_ptr_type, 'tasks'):
 519                 self._tasks_list.append(tsk)
 520             caching.SaveDynamicCacheData("kern._tasks_list", self._tasks_list)
 521             return self._tasks_list
 522
 523         if name == 'coalitions' :
 524             self._coalitions_list = caching.GetDynamicCacheData("kern._coalitions_list", [])
 525             if len(self._coalitions_list) > 0 : return self._coalitions_list
 526             coalition_queue_head = self.GetGlobalVariable('coalitions_q')
 527             coalition_type = LazyTarget.GetTarget().FindFirstType('coalition')
 528             coalition_ptr_type = coalition_type.GetPointerType()
 529             for coal in IterateLinkageChain(addressof(coalition_queue_head), coalition_ptr_type, 'coalitions'):
 530                 self._coalitions_list.append(coal)
 531             caching.SaveDynamicCacheData("kern._coalitions_list", self._coalitions_list)
 532             return self._coalitions_list
 533
 534         if name == 'thread_groups' :
 535             self._thread_groups_list = caching.GetDynamicCacheData("kern._thread_groups_list", [])
 536             if len(self._thread_groups_list) > 0 : return self._thread_groups_list
 537             thread_groups_queue_head = self.GetGlobalVariable('tg_queue')
 538             thread_group_type = LazyTarget.GetTarget().FindFirstType('thread_group')
 539             thread_groups_ptr_type = thread_group_type.GetPointerType()
 540             for coal in IterateLinkageChain(addressof(thread_groups_queue_head), thread_groups_ptr_type, 'tg_queue_chain'):
 541                 self._thread_groups_list.append(coal)
 542             caching.SaveDynamicCacheData("kern._thread_groups_list", self._thread_groups_list)
 543             return self._thread_groups_list
 544
 545         if name == 'terminated_tasks' :
 546             self._terminated_tasks_list = caching.GetDynamicCacheData("kern._terminated_tasks_list", [])
 547             if len(self._terminated_tasks_list) > 0 : return self._terminated_tasks_list
 548             task_queue_head = self.GetGlobalVariable('terminated_tasks')
 549             task_type = LazyTarget.GetTarget().FindFirstType('task')
 550             task_ptr_type = task_type.GetPointerType()
 551             for tsk in IterateQueue(task_queue_head, task_ptr_type, 'tasks'):
 552                 self._terminated_tasks_list.append(tsk)
 553             caching.SaveDynamicCacheData("kern._terminated_tasks_list", self._terminated_tasks_list)
 554             return self._terminated_tasks_list
 555
 556         if name == 'procs' :
 557             self._allproc = caching.GetDynamicCacheData("kern._allproc", [])
 558             if len(self._allproc) > 0 : return self._allproc
 559             all_proc_head = self.GetGlobalVariable('allproc')
 560             proc_val = cast(all_proc_head.lh_first, 'proc *')
 561             while proc_val != 0:
 562                 self._allproc.append(proc_val)
 563                 proc_val = cast(proc_val.p_list.le_next, 'proc *')
 564             caching.SaveDynamicCacheData("kern._allproc", self._allproc)
 565             return self._allproc
 566
 567         if name == 'interrupt_stats' :
 568             self._interrupt_stats_list = caching.GetDynamicCacheData("kern._interrupt_stats_list", [])
 569             if len(self._interrupt_stats_list) > 0 : return self._interrupt_stats_list
 570             interrupt_stats_head = self.GetGlobalVariable('gInterruptAccountingDataList')
 571             interrupt_stats_type = LazyTarget.GetTarget().FindFirstType('IOInterruptAccountingData')
 572             interrupt_stats_ptr_type = interrupt_stats_type.GetPointerType()
 573             for interrupt_stats_obj in IterateQueue(interrupt_stats_head, interrupt_stats_ptr_type, 'chain'):
 574                 self._interrupt_stats_list.append(interrupt_stats_obj)
 575             caching.SaveDynamicCacheData("kern._interrupt_stats", self._interrupt_stats_list)
 576             return self._interrupt_stats_list
 577
 578         if name == 'zombprocs' :
 579             self._zombproc_list = caching.GetDynamicCacheData("kern._zombproc_list", [])
 580             if len(self._zombproc_list) > 0 : return self._zombproc_list
 581             zproc_head = self.GetGlobalVariable('zombproc')
 582             proc_val = cast(zproc_head.lh_first, 'proc *')
 583             while proc_val != 0:
 584                 self._zombproc_list.append(proc_val)
 585                 proc_val = cast(proc_val.p_list.le_next, 'proc *')
 586             caching.SaveDynamicCacheData("kern._zombproc_list", self._zombproc_list)
 587             return self._zombproc_list
 588
 589         if name == 'version' :
 590             self._version = caching.GetStaticCacheData("kern.version", None)
 591             if self._version != None : return self._version
 592             self._version = str(self.GetGlobalVariable('version'))
 593             caching.SaveStaticCacheData("kern.version", self._version)
 594             return self._version
 595
 596         if name == 'arch' :
 597             self._arch = caching.GetStaticCacheData("kern.arch", None)
 598             if self._arch != None : return self._arch
 599             arch = LazyTarget.GetTarget().triple.split('-')[0]
 600             if arch in ('armv7', 'armv7s', 'armv7k'):
 601                 self._arch = 'arm'
 602             else:
 603                 self._arch = arch
 604             caching.SaveStaticCacheData("kern.arch", self._arch)
 605             return self._arch
 606
 607         if name == 'ptrsize' :
 608             self._ptrsize = caching.GetStaticCacheData("kern.ptrsize", None)
 609             if self._ptrsize != None : return self._ptrsize
 610             arch = LazyTarget.GetTarget().triple.split('-')[0]
 611             if arch == 'x86_64' or arch.startswith('arm64'):
 612                 self._ptrsize = 8
 613             else:
 614                 self._ptrsize = 4
 615             caching.SaveStaticCacheData("kern.ptrsize", self._ptrsize)
 616             return self._ptrsize
 617
 618         if name == 'VM_MIN_KERNEL_ADDRESS':
 619             if self.arch == 'x86_64':
 620                 return unsigned(0xFFFFFF8000000000)
 621             elif self.arch.startswith('arm64'):
 622                 return unsigned(0xffffffe000000000)
 623             else:
 624                 return unsigned(0x80000000)
 625
 626         if name == 'VM_MIN_KERNEL_AND_KEXT_ADDRESS':
 627             if self.arch == 'x86_64':
 628                 return self.VM_MIN_KERNEL_ADDRESS - 0x80000000
 629             else:
 630                 return self.VM_MIN_KERNEL_ADDRESS
 631
 632         return object.__getattribute__(self, name)