oasm: Add encoding for MRO type instructions

This commit introduces encoding logic for 4 additional instructions:

- MROB (Mask Register Over [byte])
- MROW (Mask Register Over [word])
- MROD (Mask Register Over [dword])
- MROQ (Mask Register Over [qword])

This instruction is used to fill a register with a specific length of
zeros or ones. For example, to fill a register (e.g., x2) with 16-bits
of 1s:

--
!!
!! Clear bits x2[7:0]... Mrrp,,
!! mrow!!
!!
mrow x2, #1
--

Similarly, an operand of zero sets it to zero. For example, to clear an
entire 64-bit register with zeros. Something like this can be done:

--
mroq x1, #0
--

Signed-off-by: Ian Moffett <ian@osmora.org>

0 files changed, 0 insertions, 0 deletions