lunaix-os/scripts/gdb/lunadbg/structs/page.py

   1 from gdb import Type, Value, lookup_type
   2 from . import KernelStruct
   3
   4 class PageStruct(KernelStruct):
   5     def __init__(self, gdb_inferior: Value) -> None:
   6         super().__init__(gdb_inferior, PageStruct)
   7         self.ref = self._kstruct["refs"]
   8         self.type = self._kstruct["type"]
   9         self.flags = self._kstruct["flags"]
  10         self.order = self._kstruct["order"]
  11         self.pool = self._kstruct["pool"]
  12
  13     def uninitialized(self):
  14         return not (self.flags & 0b10)
  15
  16     def reserved(self):
  17         return (not self.uninitialized()
  18                 and self.type == 0b1000
  19                 and self.ref  == 0xf0f0f0f0)
  20
  21     def busy(self):
  22         return (not self.uninitialized()
  23                 and self.ref > 0)
  24
  25     @staticmethod
  26     def get_type() -> Type:
  27         return lookup_type("struct ppage").pointer()
  28