From: lkcl <lkcl@web>
Date: Fri, 20 May 2022 21:45:27 +0000 (+0100)
Subject: (no commit message)
X-Git-Tag: opf_rfc_ls005_v1~2153
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=80b28a13fc51ce11f059f5ec36d33ae8171956d4;p=libreriscv.git

---

diff --git a/openpower/sv/cr_int_predication.mdwn b/openpower/sv/cr_int_predication.mdwn
index 2329167f4..6d3708f68 100644
--- a/openpower/sv/cr_int_predication.mdwn
+++ b/openpower/sv/cr_int_predication.mdwn
@@ -191,6 +191,14 @@ capability (BF is 3 bits)
 
 **mcrfm** - Move CR Field, masked.
 
+This instruction copies, sets, or inverts parts of a CR Field
+into another CR Field.  `mcrf` copies only one bit of the CR
+from any arbitrary bit to any other arbitrary bit, whereas
+`mcrfm` copies an entire 4-bit CR Field (or masked parts thereof).
+Unlike `mcrf` the bits of the CR Field may not change position:
+the EQ bit from the source may only go into the EQ bit of the
+destination (optionally inverted, set, or cleared).
+
     mcrfm: BF, BFA, M, mask.mode
 
     result = mask & CR{BFA}