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 Forums >>  IDA Pro  >>  IDAPython: op_t.dtyp Broken?

Topic created on: April 25, 2007 10:33 CDT by stahl .

Hi
I am having problems getting dtyp information of an operand

Please consider this small example:


ea = get_screen_ea()
ua_ana0(ea)
cmd = get_current_instruction()
op = get_instruction_operand(cmd, 0)

op_dtyp = op.dtyp
print op_dytp # doesn't show anything useful
size = 0
if op_dtyp is 0: # will never be true
    size = 1
    print " 8 bit "



I need this information for figuring out register names using get_reg_name()

Is there any other possibility? Is it really broken or am I dumb?:-)

Thanks!!!

ida 5.0 and idapython 0.9.0 and python 2.5/win xp under parallels for mac

  Dyce     April 26, 2007 06:29.35 CDT
Hello,

> stahl: Hi
> I am having problems getting dtyp information of an operand
>
> Please consider this small example:
>
>
> ea = get_screen_ea()
> ua_ana0(ea)
> cmd = get_current_instruction()
> op = get_instruction_operand(cmd, 0)
>
> op_dtyp = op.dtyp
> print op_dytp # doesn\'t show anything useful
> size = 0
> if op_dtyp is 0: # will never be true
>     size = 1
>     print \" 8 bit \"
>
> 

> I need this information for figuring out register names using get_reg_name()
>
> Is there any other possibility? Is it really broken or am I dumb?:-)

It is the former. ;)

The problem is that op.dtyp is a char in the structure so IDAPython
returns it as a string. In order to get a meaningful value out of it you
have to push it through an ord() first:


ua_ana0(here())
print ord(get_instruction_operand(cvar.cmd, 0).dtyp[0])


I will sort this out in the next version. Thanks for the report!


Cheers,

Gergo

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