[Qemu-devel] [PATCH v2 06/23] target-arm: add arm_is_secure() function

[Fabian Aggeler]

arm_is_secure() function allows to determine CPU security state
if the CPU implements Security Extensions.

Signed-off-by: Sergey Fedorov <address@hidden>
Signed-off-by: Fabian Aggeler <address@hidden>
---
 target-arm/cpu.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index a56d3d6..6ea0432 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -640,6 +640,21 @@ static inline int arm_feature(CPUARMState *env, int 
feature)
     return (env->features & (1ULL << feature)) != 0;
 }
 
+/* Return true if the processor is in secure state */
+static inline bool arm_is_secure(CPUARMState *env)
+{
+#if !defined(CONFIG_USER_ONLY)
+    if (arm_feature(env, ARM_FEATURE_SECURITY_EXTENSIONS)) {
+        return ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_MON) ||
+                !(env->cp15.c1_scr & 1);
+    } else {
+        return false;
+    }
+#else
+    return false;
+#endif
+}
+
 /* Return true if the specified exception level is running in AArch64 state. */
 static inline bool arm_el_is_aa64(CPUARMState *env, int el)
 {
-- 
1.8.3.2