Rotate instruction checks

[openpower-gitea-migrator]

Originally Gitea issue #16 by jfng (gitea) on 2022-04-12

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Rotate instruction checks

Instructions

M-form:

• rlwinm
• rlwinm.
• rlwnm
• rlwnm.
• rlwimi
• rlwimi.

MD-form:

• rldicl
• rldicl.
• rldicr
• rldicr.
• rldic
• rldic.
• rldimi
• rldimi.

MDS-form:

• rldcl
• rldcl.
• rldcr
• rldcr.

GPR access

RA (read):

• rotate then mask insert:
  • rlwimi/rlwimi.
  • rldimi/rldimi.

RA (write):

• all

RB (read):

• non-immediate shift amount:
  • rlwnm/rlwnm.
  • rldcl/rldcl.
  • rldcr/rldcr.

RS (read):

• all

CR access

Write:

• '.' suffix (Rc=1)