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-rw-r--r--target-arm/cpu.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 54384446b4..737c00c220 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -456,7 +456,7 @@ static inline bool cptype_valid(int cptype)
 {
     return ((cptype & ~ARM_CP_FLAG_MASK) == 0)
         || ((cptype & ARM_CP_SPECIAL) &&
-            (cptype <= ARM_LAST_SPECIAL));
+            ((cptype & ~ARM_CP_FLAG_MASK) <= ARM_LAST_SPECIAL));
 }
 
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