def read_ptr(self, addr):
# TODO: maybe use read_memory stuff ?
try:
val = gxf.parse_and_eval("*(void **)%#x" % addr)
val.fetch_lazy()
except gdb.MemoryError as e:
raise gxf.MemoryError(e)
return val
def read_ptr(self, addr):
# TODO: maybe use read_memory stuff ?
try:
val = gxf.parse_and_eval("*(void **)%#x" % addr)
val.fetch_lazy()
except gdb.MemoryError as e:
raise gxf.MemoryError(e)
return val
def get_heading(self, stack="$sp"):
# We need three primitives:
# compute_jmp_addr (flags + expression)
# compute_ret_addr (from stack)
# compute_call_addr (expression)
if self.itype is RET:
return gxf.parse_and_eval("*(void **) (%s)" % stack)
if self.itype is CALL:
exp = self.get_expression()
val = exp.eval()
return val
if self.itype is JMP and check_flags(self.inst):
exp = self.get_expression()
val = exp.eval()
return val
def get_heading(self, stack="$sp"):
# We need three primitives:
# compute_jmp_addr (flags + expression)
# compute_ret_addr (from stack)
# compute_call_addr (expression)
if self.itype is RET:
return gxf.parse_and_eval("*(void **) (%s)" % stack)
if self.itype is CALL:
exp = self.get_expression()
val = exp.eval()
return val
if self.itype is JMP and check_flags(self.inst):
exp = self.get_expression()
val = exp.eval()
return val
def get_addrsz():
return int(gxf.parse_and_eval("sizeof (void *)"))
def read_str(self, addr, *args, **kwargs):
ptr = gxf.parse_and_eval("(char *)%#x" % addr)
return ptr.string(*args, **kwargs)
def read_str(self, addr, *args, maxlen=4096, **kwargs):
if maxlen is not None:
ptr = gxf.parse_and_eval("*(char (*)[%d])%#x" % (maxlen, addr))
else:
ptr = gxf.parse_and_eval("(char *)%#x" % addr)
return ptr.string(*args, **kwargs)
def get_addrsz():
return int(gxf.parse_and_eval("sizeof (void *)"))
