From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Tue, 25 Oct 2022 19:13:12 +0000 (+0100)
Subject: code-comments on divmod2du and maddedu are wrong
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=612ba08c61df07264ab6b45a90699174abf86ba5;p=openpower-isa.git

code-comments on divmod2du and maddedu are wrong
RS now defaults to RC in *both* scalar (non-SVP64) and SVP64
---

diff --git a/openpower/isa/svfixedarith.mdwn b/openpower/isa/svfixedarith.mdwn
index bb9ffc6e..0888f5fb 100644
--- a/openpower/isa/svfixedarith.mdwn
+++ b/openpower/isa/svfixedarith.mdwn
@@ -7,8 +7,8 @@ VA-Form
 Pseudo-code:
 
     <!-- SVP64: RA,RB,RC,RT have EXTRA2, RS as below
-    <!-- bit 8 of EXTRA is clear: RS.[s|v]=RT.[s|v]+MAXVL
-    <!-- bit 8 of EXTRA is set  : RS.[s|v]=RC.[s|v]
+    <!-- bit 8 of EXTRA is set  : RS.[s|v]=RT.[s|v]+MAXVL
+    <!-- bit 8 of EXTRA is clear: RS.[s|v]=RC.[s|v]
     prod[0:127] <- (RA) * (RB)
     sum[0:127] <- ([0] * 64 || (RC)) + prod
     RT <- sum[64:127]
@@ -27,8 +27,8 @@ VA-Form
 Pseudo-code:
 
     <!-- SVP64: RA,RB,RC,RT have EXTRA2, RS as below
-    <!-- bit 8 of EXTRA is clear: RS.[s|v]=RT.[s|v]+MAXVL
-    <!-- bit 8 of EXTRA is set  : RS.[s|v]=RC.[s|v]
+    <!-- bit 8 of EXTRA is set  : RS.[s|v]=RT.[s|v]+MAXVL
+    <!-- bit 8 of EXTRA is clear: RS.[s|v]=RC.[s|v]
     if ((RC) <u (RB)) & ((RB) != [0]*XLEN) then
         dividend[0:(XLEN*2)-1] <- (RC) || (RA)
         divisor[0:(XLEN*2)-1] <- [0]*XLEN || (RB)