From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Mon, 27 Sep 2021 18:29:26 +0000 (+0100)
Subject: derive PartitionedSignal from UserValue (temporarily) and add lower()
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7dd0e09ea0ddf16d31e77c38d182af3dd27eae6a;p=ieee754fpu.git

derive PartitionedSignal from UserValue (temporarily) and add lower()
---

diff --git a/src/ieee754/part/partsig.py b/src/ieee754/part/partsig.py
index f09b972a..8a7cd57c 100644
--- a/src/ieee754/part/partsig.py
+++ b/src/ieee754/part/partsig.py
@@ -25,6 +25,7 @@ from ieee754.part_mul_add.partpoints import make_partition, PartitionPoints
 from operator import or_, xor, and_, not_
 
 from nmigen import (Signal, Const)
+from nmigen.hdl.ast import UserValue
 
 
 def getsig(op1):
@@ -42,8 +43,9 @@ def applyop(op1, op2, op):
     return result
 
 
-class PartitionedSignal:
-    def __init__(self, mask, *args, **kwargs):
+class PartitionedSignal(UserValue):
+    def __init__(self, mask, *args, src_loc_at=0, **kwargs):
+        super().__init__(src_loc_at=src_loc_at)
         self.sig = Signal(*args, **kwargs)
         width = len(self.sig)  # get signal width
         # create partition points
@@ -55,6 +57,9 @@ class PartitionedSignal:
         for name in ['add', 'eq', 'gt', 'ge', 'ls', 'xor']:
             self.modnames[name] = 0
 
+    def lower(self):
+        return self.sig
+
     def set_module(self, m):
         self.m = m