From 30469cc3cf7b7eb790e7d99fbef69e970992d7b9 Mon Sep 17 00:00:00 2001
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Wed, 22 Jun 2022 15:58:26 +0100
Subject: [PATCH] undefined

---
 openpower/sv/bmask.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/openpower/sv/bmask.py b/openpower/sv/bmask.py
index 9930d0a37..c59fc5efa 100644
--- a/openpower/sv/bmask.py
+++ b/openpower/sv/bmask.py
@@ -20,6 +20,8 @@ def bmask(mode, RA, RB=None, zero=False):
          RT = a1 & a2
     if mode3 == 2:
          RT = a1 ^ a2
+    if mode3 == 3:
+         RT = 0 # UNDEFINED
     RT &= mask
     if not zero:
         RT |= RA & ~mask
-- 
2.30.2