From: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Date: Sat, 14 Apr 2018 16:06:34 +0000 (+0200)
Subject: target-microblaze: Respect MSR.PVR as read-only
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=59b1a90b0b5dc6b368364e9e1d40184eb4506c39;p=people%2Fpauldu%2Fqemu.git

target-microblaze: Respect MSR.PVR as read-only

Respect MSR.PVR as read-only. We were wrongly overwriting the PVR bit.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
---

diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c
index 7628b0e25b..f739751930 100644
--- a/target/microblaze/translate.c
+++ b/target/microblaze/translate.c
@@ -424,7 +424,7 @@ static inline void msr_write(DisasContext *dc, TCGv v)
     /* PVR bit is not writable.  */
     tcg_gen_andi_tl(t, v, ~MSR_PVR);
     tcg_gen_andi_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], MSR_PVR);
-    tcg_gen_or_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], v);
+    tcg_gen_or_tl(cpu_SR[SR_MSR], cpu_SR[SR_MSR], t);
     tcg_temp_free(t);
 }