From: Cesar Strauss <cestrauss@gmail.com>
Date: Sun, 14 Feb 2021 21:47:02 +0000 (-0300)
Subject: Fix conversion to MSB0
X-Git-Tag: convert-csv-opcode-to-binary~231^2~2
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=01cfe8481f722dd761b155fce7c19148c8209d67;p=soc.git

Fix conversion to MSB0

Correct formula is 31 - x.
---

diff --git a/src/soc/decoder/power_decoder2.py b/src/soc/decoder/power_decoder2.py
index 640acef8..a1a69c99 100644
--- a/src/soc/decoder/power_decoder2.py
+++ b/src/soc/decoder/power_decoder2.py
@@ -1326,7 +1326,7 @@ class SVP64PrefixDecoder(Elaboratable):
         rmfields = [6, 8] + list(range(10,32)) # SVP64 24-bit RM
         l = []
         for idx in rmfields:
-            l.append(self.opcode_in[32-idx])
+            l.append(self.opcode_in[31-idx])
         with m.If(self.is_svp64_mode):
             comb += self.svp64_rm.eq(Cat(*l))