From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Mon, 24 May 2021 09:59:16 +0000 (+0100)
Subject: add nop support to ISACaller
X-Git-Tag: xlen-bcd~567
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d814ea11859f993c2f93ae33af7f132ece5ca52f;p=openpower-isa.git

add nop support to ISACaller
---

diff --git a/src/openpower/decoder/isa/caller.py b/src/openpower/decoder/isa/caller.py
index 5eef119c..0ab052ce 100644
--- a/src/openpower/decoder/isa/caller.py
+++ b/src/openpower/decoder/isa/caller.py
@@ -1023,6 +1023,12 @@ class ISACaller:
                   (name, asmop, self.pc.CIA.value))
             return
 
+        # nop has to be supported, we could let the actual op calculate
+        # but PowerDecoder has a pattern for nop
+        if name is 'nop':
+            self.update_pc_next()
+            return
+
         info = self.instrs[name]
         yield from self.prep_namespace(info.form, info.op_fields)