From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Thu, 8 Jul 2021 22:07:39 +0000 (+0100)
Subject: reset MSR.SVF mode on rollover (end of loop)
X-Git-Tag: DRAFT_SVP64_0_1~642
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c5655fbf15de3141a1802b61a02ba0f2364c8da6;p=libreriscv.git

reset MSR.SVF mode on rollover (end of loop)
---

diff --git a/openpower/sv/remapmatrix.py b/openpower/sv/remapmatrix.py
index f256cc54b..c9c81f214 100644
--- a/openpower/sv/remapmatrix.py
+++ b/openpower/sv/remapmatrix.py
@@ -46,8 +46,8 @@ def matrix_demo():
         [4,5,9,1,2]]
 
     # pick one of the above (crude, non-automated, but it works, hey)
-    X = X2
-    Y = Y2
+    X = X1
+    Y = Y1
 
     # get the dimensions of the 2 matrices
     xdim1 = len(X[0])
diff --git a/openpower/sv/setvl.mdwn b/openpower/sv/setvl.mdwn
index 31b23f823..5e55c8341 100644
--- a/openpower/sv/setvl.mdwn
+++ b/openpower/sv/setvl.mdwn
@@ -122,8 +122,10 @@ the same instruction.  That would require two instructions.
         dststep++
         rollover = (srcstep == VL or dststep == VL)
         if rollover:
+            // Reset srcstep, dststep, and also exit "Vertical First" mode
             srcstep = 0
             dststep = 0
+            MSR[6] = 0
         SPR[SV].srcstep = srcstep
         SPR[SV].dststep = dststep