Hi.

I can confirm these patches can compile and could be run normally.
But the tests were omitted in this patch, so I could not confirm if the patches work.
Do we need to add `#define ARCH_nanomips` in the front part like the official one? 
If so, definitions of `ARCH_nanomips` should be added in the `opcodes/disassemble.c` file.
 
Comparing with the patch v5, I can see you have deleted the file `include/elf/mips-common.h`
and moved its main contents to `include/elf/nanomips.h`. This should be fine, 
but in my opinion, the two FIXMEs in file `opcodes/nanomips-dis.c` should be kept:
"/* FIXME: These should be shared with gdb somehow. */" and
"/* FIXME: Should probably use a hash table on the major opcode here. */" 
as these behaviors were not fixed.

Thanks.
Tsing

>This series introduces a subset of nanoMIPS functionalities. It's a pre-requirement for nanoMIPS support for GDB/SIM.
>
>Almost complete series is a "green patch" - it adds things, so the probability of making regressions of existing functionalities is minimal.
>
>Compared to the previous series version (v5), there are no functional impacts but changes are split into smaller parts.