Fix addi instruction, think a commit got lost

[soc.git] / src / soc / decoder / selectable_int.py

diff --git a/src/soc/decoder/selectable_int.py b/src/soc/decoder/selectable_int.py
index fb064fcb383bd54a5bf35bc4d445c2e8fc6a0f10..28e48f2e8d08315da3bf52a72aed6ddd94bfbbb6 100644 (file)
--- a/src/soc/decoder/selectable_int.py
+++ b/src/soc/decoder/selectable_int.py
@@ -159,6 +159,10 @@ class SelectableInt:
             return onebit(other == self.value)
         assert False
 
+    def narrow(self, bits):
+        assert bits <= self.bits
+        return SelectableInt(self.value, bits)
+
     def __bool__(self):
         return self.value != 0