Yosi Saggi <yosis@...> writes:
> I have a payload that its size is 42 bits. I am getting it from the TVB in
little Endian.
> I have no problem displaying the whole payload as big endian with a guint
64bit variable:
>
> guint32 f2_val1, f2_val2;
> guint64 f2_val;
>
> f2_val1 = tvb_get_letohl(tvb, *plen)
> f2_val2 = tvb_get_letohl(tvb, (*plen+4));
> f2_val = f2_val1;
> f2_val= (f2_val<<32);
> f2_val = f2_val|f2_val2;
Why not just grab your 64-bit value like this?
f2_val = tvb_get_letoh64(tvb, *plen);
... and if this thing is really only 42 bits, then you probably need to mask off
some of the irrelevant bits and/or shift as necessary.
> Are threr any suggestions what can I use to display it correctly. As I have
seen that “proto_tree_add_bits_ret_val”, although having a “big endian/little
endian” operand, that “little endian” is not implemented yet.
Correct. tvb_get_bits[16|32|64] are not yet implemented for little-endian.
> Any help/insight would be much appreciated
Until little-endian support for those functions is added, you likely need to
shift/mask the f2_val to obtain the individual pieces you need, then add them
each separately to the tree using other appropriate proto_tree_add_xyz()
functions, such as proto_tree_add_uint(), etc.
