From 43e62dbd9e3959dd6198c59f5c5c8ccebb12cf72 Mon Sep 17 00:00:00 2001
From: Michael Neuling <mikey@neuling.org>
Date: Thu, 14 Jul 2022 10:32:37 +1000
Subject: [PATCH] Metavalue cleanup for rotator.vhdl

Signed-off-by: Michael Neuling <mikey@neuling.org>
---
 rotator.vhdl | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/rotator.vhdl b/rotator.vhdl
index 45913c9..1049e20 100644
--- a/rotator.vhdl
+++ b/rotator.vhdl
@@ -34,6 +34,10 @@ architecture behaviour of rotator is
         variable ret: std_ulogic_vector(63 downto 0);
     begin
         ret := (others => '0');
+	if is_X(mask_begin) then
+	    ret := (others => 'X');
+	    return ret;
+	end if;
         for i in 0 to 63 loop
             if i >= to_integer(unsigned(mask_begin)) then
                 ret(63 - i) := '1';