From caf590ddc9f514f88cc409319c06550f1f2b4014 Mon Sep 17 00:00:00 2001
From: Nicholas Piggin <npiggin@gmail.com>
Date: Tue, 6 Jul 2021 15:13:21 +1000
Subject: [PATCH] target/ppc: mtmsrd is an illegal instruction on BookE

MSR is a 32-bit register in BookE and there is no mtmsrd instruction.

Cc: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20210706051321.609046-1-npiggin@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 target/ppc/translate.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index f65d1e81ea..d1f482b0f3 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -4940,6 +4940,11 @@ static void gen_mtcrf(DisasContext *ctx)
 #if defined(TARGET_PPC64)
 static void gen_mtmsrd(DisasContext *ctx)
 {
+    if (unlikely(!is_book3s_arch2x(ctx))) {
+        gen_invalid(ctx);
+        return;
+    }
+
     CHK_SV;
 
 #if !defined(CONFIG_USER_ONLY)