From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Fri, 24 Jun 2022 14:17:27 +0000 (+0100)
Subject: sigh, bm not mode argument to bmask
X-Git-Tag: sv_maxu_works-initial~348
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=65b571997dd6d8235c5c2186650726fbefe65f49;p=openpower-isa.git

sigh, bm not mode argument to bmask
plus the offsets (sub-fields) of bm were completely wrong
---

diff --git a/openpower/isa/av.mdwn b/openpower/isa/av.mdwn
index 6d13b90c..862c26ec 100644
--- a/openpower/isa/av.mdwn
+++ b/openpower/isa/av.mdwn
@@ -174,15 +174,15 @@ Special Registers Altered:
  
 BM2-Form
  
-* bmask  RT,RA,RB,mode
+* bmask  RT,RA,RB,bm
 
 Pseudo-code:
 
     if _RB = 0 then mask <- [1] * XLEN
-    else mask = (RB)
+    else mask <- (RB)
     a1 <- (RA) & mask
-    if mode[1] then a1 <- ¬ra
-    mode2 <- mode[2:3]
+    if bm[0] then a1 <- ¬ra
+    mode2 <- bm[1:2]
     if mode2 = 0 then a2 <- (¬ra)+1
     if mode2 = 1 then a2 <- ra-1
     if mode2 = 2 then a2 <- ra+1
@@ -190,7 +190,7 @@ Pseudo-code:
     a1 <- a1 & mask
     a2 <- a2 & mask
     # select operator
-    mode3 <- mode[3:4]
+    mode3 <- bm[3:4]
     if mode3 = 0 then result <- a1 | a2
     if mode3 = 1 then result <- a1 & a2
     if mode3 = 2 then result <- a1 ^ a2