move trunc_div and trunc_rem to nmutil

diff --git a/src/soc/decoder/helpers.py b/src/soc/decoder/helpers.py
index 6b61ffcaec651fa5fe0db3ab575e7920a75de9c4..d920b920f89614c07809aca3194e326f15811f98 100644 (file)
--- 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
     """