Does binutils support 48-bit instructions and half-word based little-endian?

[bjgnu@sunnorth.com.cn]

Hi all,

I'm now concentrate on a problem about the 48-bit instruction on 
half-word based little-endian.

A 32-bit chip which supports both big-endian and little-endian,
and has both 16-bit, 32-bit, and 48-bit instructions.

1, In the .text section, all the instructions are arranged by this
kind of little-endian (half-word per unit):

16-bit-inst big-endian:    1122
32-bit-inst big-endian:    aabbccdd
48-bit-inst big-endian:    112233445566

16-bit-inst little-endian: 2211
32-bit-inst little-endian: bbaaddcc
48-bit-inst little-endian: 221144336655

2, But in .data section,  using the normal style of little-endian:

16-bit-data big-endian:    1122
32-bit-data big-endian:    aabbccdd

16-bit-data little-endian: 2211
32-bit-data little-endian: ddccbbaa

I find it's hard to decide where is writing data, and where is 
writing code even if i wrote my_bfd_putl32, my_bfd_putl48 functionss
for the harf-word based little-endian.

And the behavior of writing bfds is not just in the porting
files (tc-target.c or elfxx-target.c), but in a lot of general files.
And all the general files use it's own bfd_putl16, bfd_putl32, 
and bfd_putl64 functions defined in libbfd.c.

Does binutils provide some method or other hooks to resolve this issue?


Thanks!