Have core uc property reference arch uc instance

Author: elicn

qiling/core.py

@@ -62,7 +62,6 @@ def __init__(
         self._multithread = multithread
         self._log_filter = None
         self._internal_exception = None
-        self._uc = None
         self._stop_options = stop
 
         ##################################
@@ -151,8 +150,6 @@ def __init__(
 
         self._arch = select_arch(archtype, endian, thumb)(self)
 
-        self.uc = self.arch.uc
-
         # Once we finish setting up arch, we can init QlCoreStructs and QlCoreHooks
         if not self.interpreter:
             QlCoreStructs.__init__(self, self.arch.endian, self.arch.bits)
@@ -472,11 +469,7 @@ def uc(self) -> 'Uc':
 
             Type: Uc
         """
-        return self._uc
-
-    @uc.setter
-    def uc(self, u: 'Uc'):
-        self._uc = u
+        return self.arch.uc
 
     @property
     def stop_options(self) -> QL_STOP:

qiling/os/posix/syscall/unistd.py

@@ -461,7 +461,6 @@ def __read_str_array(addr: int) -> Iterator[str]:
     if hasattr(ql.arch, 'msr'):
         ql.arch.msr.uc = uc
 
-    ql.uc = uc
     QlCoreHooks.__init__(ql, uc)
 
     ql.os.load()