From: lkcl <lkcl@web>
Date: Sun, 17 Apr 2022 10:25:40 +0000 (+0100)
Subject: (no commit message)
X-Git-Tag: opf_rfc_ls005_v1~2764
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0fa5786e1b8cf841f25a0aba1ebb27d8f509dad6;p=libreriscv.git

---

diff --git a/openpower/isa/svfixedarith.mdwn b/openpower/isa/svfixedarith.mdwn
index 6588d8c8e..a08c54356 100644
--- a/openpower/isa/svfixedarith.mdwn
+++ b/openpower/isa/svfixedarith.mdwn
@@ -8,6 +8,23 @@ Pseudo-code:
 
     prod[0:(XLEN*2)-1] <- MULS((RA), (RB))
     RT <- prod[XLEN:(XLEN*2)-1]
+    RS <- prod[0:XLEN-1]
+
+Special Registers Altered:
+
+    None
+
+# Multiply Twin Doubleword Unsigned
+
+XO-Form
+
+* mulxdu RT,RA,RB
+
+Pseudo-code:
+
+    prod[0:(XLEN*2)-1] <- (RA) * (RB)
+    RT <- prod[XLEN:(XLEN*2)-1]
+    RS <- prod[0:XLEN-1]
 
 Special Registers Altered: