From: Dmitry Selyutin <dmitry.selyutin@3mdeb.com>
Date: Tue, 31 Aug 2021 20:24:13 +0000 (+0000)
Subject: fixedshift: switch slwX to XLEN
X-Git-Tag: xlen-bcd~39
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=905567f259002a7cf4e8210102dfca83e8fa10c6;p=openpower-isa.git

fixedshift: switch slwX to XLEN
---

diff --git a/openpower/isa/fixedshift.mdwn b/openpower/isa/fixedshift.mdwn
index 3bf0c301..ab94e9a4 100644
--- a/openpower/isa/fixedshift.mdwn
+++ b/openpower/isa/fixedshift.mdwn
@@ -190,11 +190,11 @@ X-Form
 
 Pseudo-code:
 
-    n <- (RB)[59:63]
-    r <- ROTL32((RS)[32:63], n)
-    if (RB)[58] = 0 then
-         m <- MASK32(0, 31-n)
-    else m <- [0]*64
+    n <- (RB)[XLEN-5:XLEN-1]
+    r <- ROTL32((RS)[XLEN/2:XLEN-1], n)
+    if (RB)[XLEN-6] = 0 then
+         m <- MASK32(0, ((XLEN/2)-1-n))
+    else m <- [0]*XLEN
     RA <- r & m
 
 Special Registers Altered: