From 1b6fd0bc551969c61f94f13cbcb013269ee3a07c Mon Sep 17 00:00:00 2001
From: ths <ths@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Mon, 29 Oct 2007 00:49:32 +0000
Subject: [PATCH] Restrict CP0_PerfCnt to legal values.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3476 c046a42c-6fe2-441c-8c8c-71466251a162
---
 target-mips/op.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target-mips/op.c b/target-mips/op.c
index f29134567c..569c2f2a9b 100644
--- a/target-mips/op.c
+++ b/target-mips/op.c
@@ -1971,7 +1971,7 @@ void op_mtc0_depc (void)
 
 void op_mtc0_performance0 (void)
 {
-    env->CP0_Performance0 = T0; /* XXX */
+    env->CP0_Performance0 = T0 & 0x000007ff;
     RETURN();
 }