From: Shriya Sharma <shriya@redsemiconductor.com>
Date: Thu, 19 Oct 2023 10:49:52 +0000 (+0100)
Subject: added stwsx instruction
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c6b0ca133934fb827be3ce6df3a5a9b4fc14c2bb;p=openpower-isa.git

added stwsx instruction
---

diff --git a/openpower/isa/fixedstoreshift.mdwn b/openpower/isa/fixedstoreshift.mdwn
index 1f377cd1..396b3017 100644
--- a/openpower/isa/fixedstoreshift.mdwn
+++ b/openpower/isa/fixedstoreshift.mdwn
@@ -110,16 +110,16 @@ Special Registers Altered:
 
     None
 
-# Store Word Indexed
+# Store Word Shifted Indexed
 
 X-Form
 
-* stwx RS,RA,RB
+* stwsx RS,RA,RB,SH
 
 Pseudo-code:
 
     b <- (RA|0)
-    EA <- b + (RB)
+    EA <- b + (RB) << (SH+1)
     MEM(EA, 4) <- (RS)[XLEN-32:XLEN-1]
 
 Description: