decoder/helpers: support XLCASTU

diff --git a/src/openpower/decoder/helpers.py b/src/openpower/decoder/helpers.py
index d51305b96ad396cbad760e8d69d14ac6393206a2..3b142e1a9a5e96b47259802a7afc4d04e7a95d48 100644 (file)
--- a/src/openpower/decoder/helpers.py
+++ b/src/openpower/decoder/helpers.py
@@ -450,6 +450,10 @@ class ISACallerHelper:
     def XLEN(self):
         return self.__XLEN
 
+    def XLCASTU(self, value):
+        bits = min(value.bits, self.XLEN)
+        return SelectableInt(value.value & ((1 << bits) - 1), self.XLEN)
+
     def __getattr__(self, attr):
         return getattr(sys.modules[ISACallerHelper.__module__], attr)