From bf6a572c8f0bfcbe59fdfd4d22a7f6bb58cbef0f Mon Sep 17 00:00:00 2001
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Fri, 16 Apr 2021 19:03:58 +0100
Subject: [PATCH] sigh, new_shift wrong bitwidth

---
 src/soc/decoder/isa/radixmmu.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/soc/decoder/isa/radixmmu.py b/src/soc/decoder/isa/radixmmu.py
index f4603604..1a37f15c 100644
--- a/src/soc/decoder/isa/radixmmu.py
+++ b/src/soc/decoder/isa/radixmmu.py
@@ -584,7 +584,7 @@ class RADIX:
         limit = shift + (31 - 12)
         if mbits.value < 5 or mbits.value > 16 or mbits.value > limit.value:
             return "badtree"
-        new_shift = limit - mbits
+        new_shift = SelectableInt(limit.value - mbits.value, shift.bits)
         # TODO verify that returned result is correct
         return new_shift
 
-- 
2.30.2