def __setattr__(self, name, newvalue):
if name not in self._regs:
raise AttributeError
msb, lsb = self._regs[name]
val = self.value & (~bitops.bm(msb, lsb))
val |= newvalue << lsb
# can't access self.value directly since that would cause
# infinite recursion to __setattr__
object.__setattr__(self, "value", val)
def __setattr__(self, name, newvalue):
if name not in self._regs:
raise AttributeError
msb, lsb = self._regs[name]
val = self.value & (~bitops.bm(msb, lsb))
val |= newvalue << lsb
# can't access self.value directly since that would cause
# infinite recursion to __setattr__
object.__setattr__(self, "value", val)
def page_table_walk(self, virt):
global_offset = bvalsel(31, 20, virt)
l1_pte = self.global_page_table[global_offset]
bit18 = (l1_pte & 0x40000) >> 18
if (bvalsel(1, 0, l1_pte) == 1):
l2_offset = bvalsel(19, 12, virt)
l2_pte = self.secondary_page_tables[global_offset][l2_offset]
if l2_pte is None:
return None
if (bvalsel(1, 0, l2_pte) == 2) or (bvalsel(1, 0, l2_pte) == 3):
entry4kb = (l2_pte & bm(31, 12)) + bvalsel(11, 0, virt)
return entry4kb
elif (bvalsel(1, 0, l2_pte) == 1):
entry64kb = (l2_pte & bm(31, 16)) + bvalsel(15, 0, virt)
return entry64kb
if (bvalsel(1, 0, l1_pte) == 2):
onemb_entry = bm(31, 20) & l1_pte
onemb_entry += bvalsel(19, 0, virt)
return onemb_entry
return 0
def page_table_walk(self, virt):
global_offset = bvalsel(31, 20, virt)
l1_pte = self.global_page_table[global_offset]
bit18 = (l1_pte & 0x40000) >> 18
if (bvalsel(1, 0, l1_pte) == 1) :
l2_offset = bvalsel(19, 12, virt)
l2_pte = self.secondary_page_tables[global_offset][l2_offset]
if l2_pte is None :
return None
if (bvalsel(1, 0, l2_pte) == 2) or (bvalsel(1, 0, l2_pte) == 3) :
entry4kb = (l2_pte & bm(31, 12)) + bvalsel(11, 0, virt)
return entry4kb
elif (bvalsel(1, 0, l2_pte) == 1) :
entry64kb = (l2_pte & bm(31, 16)) + bvalsel(15, 0, virt)
return entry64kb
if (bvalsel(1, 0, l1_pte) == 2) :
onemb_entry = bm(31, 20) & l1_pte
onemb_entry += bvalsel(19, 0, virt)
return onemb_entry
return 0