arch-power: Fix disassembly for arithmetic instructions

This fixes disassembly generated for integer add and subtract
arithmetic instructions based on the type of operands and the
special use cases for which the Power ISA provides extended
mnemonics.

Change-Id: I89b8271994e4d4b7b16efad170af5eeb5ee1aa10
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/40900
Reviewed-by: Boris Shingarov <shingarov@labware.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2 files changed