arm_is_secure() function allows to determine CPU security state
if the CPU implements Security Extensions.
Signed-off-by: Sergey Fedorov <s.fedo...@samsung.com>
Signed-off-by: Fabian Aggeler <aggel...@ethz.ch>
---
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
