From: Cesar Strauss <cestrauss@gmail.com>
Date: Sun, 21 Feb 2021 17:21:54 +0000 (-0300)
Subject: The field selection function was moved to nmutil.util
X-Git-Tag: convert-csv-opcode-to-binary~174
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=8e30713ebb4d4cd17350401d85692b8fed1dbbab;p=soc.git

The field selection function was moved to nmutil.util

All previous users were updated.
---

diff --git a/src/soc/consts.py b/src/soc/consts.py
index c89fed93..ce13b3e1 100644
--- a/src/soc/consts.py
+++ b/src/soc/consts.py
@@ -80,32 +80,6 @@ def field(r, msb0_start, msb0_end=None, field_width=64):
         return r[field_slice(msb0_start, msb0_end, field_width)]
 
 
-def sel(r, sel_bits, field_width=None):
-    """Forms a subfield from a selection of bits of the signal `r`
-    ("register").
-
-    :param r: signal containing the field from which to select the subfield
-    :param sel_bits: bit indices of the subfield, in "MSB 0" convention,
-                     from most significant to least significant. Note that
-                     the indices are allowed to be non-contiguous and
-                     out-of-order.
-    :param field_width: field width. If absent, use the signal `r` own width.
-    """
-    # find the MSB index in LSB0 numbering
-    if field_width is None:
-        msb = len(r) - 1
-    else:
-        msb = field_width - 1
-    # extract the selected bits
-    sig_list = []
-    for idx in sel_bits:
-        sig_list.append(r[msb - idx])
-    # place the LSB at the front of the list,
-    # since, in nMigen, Cat starts from the LSB
-    sig_list.reverse()
-    return Cat(*sig_list)
-
-
 # Listed in V3.0B Book III Chap 4.2.1
 # MSR bit numbers, *bigendian* order (PowerISA format)
 # use this in the simulator