Hi Kaushik,
We are planning to support the same in binutils, gcc and newlib. Please let us know if you have any suggestions to implement this support for easier FSF approval.
Please make sure that you have an FSF Binutils Copyright assignment in place.
Please follow the GNU Coding Standards: http://savannah.gnu.org/projects/gnustandardsPlease try to include one or more assembler test cases to check the assembly and disassembly of the new instructions.
Cheers Nick