def is_func_prolog(ea, reg_check=True):
if ea % 2 != 0:
return NONE
# function prolog requires at least four bytes
if any(not ida_bytes.is_mapped(ea + i) for i in range(4)):
return NONE
word = ida_bytes.get_word(ea)
next_word = ida_bytes.get_word(ea + 2)
# check thumb PUSH.W
if word == 0xE92D:
# PUSH LR
if not reg_check or is_valid_reglist(next_word, False):
return THUMB
# check thumb PUSH
elif (word >> 8) == 0xB5:
if not reg_check or is_valid_reglist(word, True):
return THUMB
# check arm PUSH
elif next_word == 0xE92D:
if ea % 4 == 0:
# PUSH LR
if not reg_check or is_valid_reglist(word, False):
return ARM
return NONE
def is_mapped(ea=None):
"""
Static method which allow to know if an address is mapped or not.
:param ea: The address to test for being mapped or not. If
``None`` the screen address will be used.
:return: True if the address is mapped, False otherwise.
"""
if ea is None:
ea = ida_kernwin.get_screen_ea()
return ida_bytes.is_mapped(ea)
def isEnabled(ea):
return ida_bytes.is_mapped(ea)
def is_mapped(self, address):
return ida_bytes.is_mapped(address)