From: Dmitry Selyutin <ghostmansd@gmail.com>
Date: Tue, 20 Sep 2022 10:23:44 +0000 (+0300)
Subject: power_insn: custom sz handling for branches
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=161cdc781f31462edd9f0c42ac5e6c4b1b5d04be;p=openpower-isa.git

power_insn: custom sz handling for branches
---

diff --git a/src/openpower/decoder/power_insn.py b/src/openpower/decoder/power_insn.py
index 98fd44c9..600d8fd4 100644
--- a/src/openpower/decoder/power_insn.py
+++ b/src/openpower/decoder/power_insn.py
@@ -1723,7 +1723,7 @@ class CROpRM(CROpBaseRM):
 # ********************
 # Branches mode
 # https://libre-soc.org/openpower/sv/branches/
-class BranchBaseRM(SZBaseRM, BaseRM):
+class BranchBaseRM(BaseRM):
     ALL: BaseRM[4]
     SNZ: BaseRM[5]
     SL: BaseRM[17]
@@ -1736,8 +1736,20 @@ class BranchBaseRM(SZBaseRM, BaseRM):
     def specifiers(self, record):
         if self.ALL:
             yield "all"
+
+        # /sz
+        #   branch.sz=1
+        #   branch.snz=0
+        # /snz
+        #   branch.sz=1
+        #   branch.snz=1
         if self.SNZ:
+            if not self.sz:
+                raise ValueError(self.sz)
             yield "snz"
+        elif self.sz:
+            yield "sz"
+
         if self.SL:
             yield "sl"
         if self.SLu: