From: Dmitry Selyutin <dmitry.selyutin@3mdeb.com>
Date: Mon, 23 Aug 2021 19:50:22 +0000 (+0000)
Subject: fixedarith: switch moduw to XLEN
X-Git-Tag: xlen-bcd~70
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e2229b93ac1ba9756cf4c7c88a7bb1aa1599b46f;p=openpower-isa.git

fixedarith: switch moduw to XLEN
---

diff --git a/openpower/isa/fixedarith.mdwn b/openpower/isa/fixedarith.mdwn
index 98a32366..663fa176 100644
--- a/openpower/isa/fixedarith.mdwn
+++ b/openpower/isa/fixedarith.mdwn
@@ -528,14 +528,14 @@ X-Form
 
 Pseudo-code:
 
-    dividend[0:31] <- (RA) [32:63]
-    divisor [0:31] <- (RB) [32:63]
-    if divisor = [0]*32 then
-        RT[0:63] <- undefined([0]*64)
+    dividend[0:(XLEN/2)-1] <- (RA)[XLEN/2:63]
+    divisor [0:(XLEN/2)-1] <- (RB)[XLEN/2:63]
+    if divisor = [0]*(XLEN/2) then
+        RT[0:XLEN-1] <- undefined([0]*64)
         overflow <- 1
     else
-        RT[32:63] <- dividend % divisor
-        RT[0:31] <- undefined([0]*32)
+        RT[XLEN/2:XLEN-1] <- dividend % divisor
+        RT[0:(XLEN/2)-1] <- undefined([0]*(XLEN/2))
         overflow <- 0
 
 Special Registers Altered: