New datatype addition to gcc

Hello All,


I want to know if it is feasible (without too much of work) to
add a new custom data-type to gcc 3.2.


We have a processor which originally has 16-bit addressing. So, while
porting gcc3.2 to our processor, modifications were done to the effect
that even character datatypes will access/address 16- bits. Now, our
Processor development team says, they are adding 4 new instructions
(load/store lo/high byte) and they want for the compiler to provide a
provision where 8-bit addressing is possible in parallel with 16-bit,
but NO 8-bit arithmetic is needed. So, I thought, if a new
custom-datatype can be added to the existing port, and only load/store
functions can be attached to the variables of that datatype, it would
be much simpler.


Please advice,
Thanks and Regards,
Sriharsha.


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