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added stwbrsx instruction
authorShriya Sharma <shriya@redsemiconductor.com>
Thu, 19 Oct 2023 10:55:00 +0000 (11:55 +0100)
committerLuke Kenneth Casson Leighton <lkcl@lkcl.net>
Sun, 29 Oct 2023 08:54:37 +0000 (08:54 +0000)
openpower/isa/fixedstoreshift.mdwn patch | blob | history

diff --git a/openpower/isa/fixedstoreshift.mdwn b/openpower/isa/fixedstoreshift.mdwn
index 37e74887f0a4a97560fea4b5c52e285cfe9e5f26..7e0c46360e19b61e5a65a62219c369c0a66d0e33 100644 (file)
--- a/openpower/isa/fixedstoreshift.mdwn
+++ b/openpower/isa/fixedstoreshift.mdwn
@@ -237,16 +237,16 @@ Special Registers Altered:
 
     None
 
-# Store Word Byte-Reverse Indexed
+# Store Word Byte-Reverse Shifted Indexed
 
 X-Form
 
-* stwbrx RS,RA,RB
+* stwbrsx RS,RA,RB,SH
 
 Pseudo-code:
 
     b <- (RA|0)
-    EA <- b + (RB)
+    EA <- b + (RB) << (SH+1)
     MEM(EA, 4) <- ((RS)[56:63] || (RS)[48:55] || (RS)[40:47]
                    ||(RS)[32:39])