svp64.py: decrement SVd operand

diff --git a/src/openpower/sv/trans/svp64.py b/src/openpower/sv/trans/svp64.py
index 80391573cd30df67eaeb927c1da02a51e6b943f3..70f632d029e89b3705bb99e9a854b4be1563cccb 100644 (file)
--- a/src/openpower/sv/trans/svp64.py
+++ b/src/openpower/sv/trans/svp64.py
@@ -163,6 +163,7 @@ def svindex(fields):
     PO = 22
     XO = 0b101001
     (RS, rmm, SVd, ew, yx, mm, sk) = fields
+    SVd -= 1
     return instruction(
         (PO , 0 , 5),
         (RS , 6 , 10),