From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Fri, 19 Jun 2020 21:16:55 +0000 (+0100)
Subject: move trunc_div and trunc_rem to nmutil
X-Git-Tag: div_pipeline~306
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a56985dfb4fb3197700417f480fd214aa7d1e84e;p=soc.git

move trunc_div and trunc_rem to nmutil
---

diff --git a/src/soc/decoder/helpers.py b/src/soc/decoder/helpers.py
index 6b61ffca..d920b920 100644
--- a/src/soc/decoder/helpers.py
+++ b/src/soc/decoder/helpers.py
@@ -1,5 +1,6 @@
 import unittest
 from soc.decoder.selectable_int import SelectableInt
+from nmutil.divmod import trunc_div, trunc_rem
 
 """
 Links:
@@ -11,33 +12,6 @@ def exts(value, bits):
     return (value & (sign - 1)) - (value & sign)
 
 
-# this is a POWER ISA 3.0B compatible div function
-def trunc_div(n, d):
-    f = getattr(n, "trunc_div", None)
-    if f is not None:
-        return f(d)
-    fr = getattr(d, "rtrunc_div", None)
-    if fr is not None:
-        return fr(n)
-    abs_n = abs(n)
-    abs_d = abs(d)
-    abs_q = n // d
-    if (n < 0) == (d < 0):
-        return abs_q
-    return -abs_q
-
-
-# this is a POWER ISA 3.0B compatible mod / remainder function
-def trunc_rem(n, d):
-    f = getattr(n, "trunc_rem", None)
-    if f is not None:
-        return f(d)
-    fr = getattr(d, "rtrunc_rem", None)
-    if fr is not None:
-        return fr(n)
-    return n - d * trunc_div(n, d)
-
-
 def EXTS(value):
     """ extends sign bit out from current MSB to all 256 bits
     """