target/ppc: mtmsrd is an illegal instruction on BookE

[PATCH] target/ppc: mtmsrd is an illegal instruction on BookE

Nicholas Piggin posted 1 patch 2 years, 10 months ago

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git fetch https://github.com/patchew-project/qemu tags/patchew/20210706051321.609046-1-npiggin@gmail.com

Maintainers: Greg Kurz <groug@kaod.org>, David Gibson <david@gibson.dropbear.id.au>

target/ppc/translate.c | 5 +++++
1 file changed, 5 insertions(+)

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[PATCH] target/ppc: mtmsrd is an illegal instruction on BookE

Posted by Nicholas Piggin 2 years, 10 months ago

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>
---
 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)
-- 
2.23.0