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authorRémi Denis-Courmont <remi.denis.courmont@huawei.com>2021-01-12 12:44:54 +0200
committerPeter Maydell <peter.maydell@linaro.org>2021-01-19 14:38:51 +0000
commitf3ee5160ce3c03795a28e16d1a0b4916a6c959f4 (patch)
tree9fa593cdfe126cd2edbd5cb0bb7e673691c14c11
parentcc974d5cd84ea60a3dad59752aea712f3d47f8ce (diff)
target/arm: add arm_is_el2_enabled() helper
This checks if EL2 is enabled (meaning EL2 registers take effects) in the current security context. Signed-off-by: Rémi Denis-Courmont <remi.denis.courmont@huawei.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210112104511.36576-2-remi.denis.courmont@huawei.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--target/arm/cpu.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index f58aada410..0bdda90914 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -2148,6 +2148,18 @@ static inline bool arm_is_secure(CPUARMState *env)
return arm_is_secure_below_el3(env);
}
+/*
+ * Return true if the current security state has AArch64 EL2 or AArch32 Hyp.
+ * This corresponds to the pseudocode EL2Enabled()
+ */
+static inline bool arm_is_el2_enabled(CPUARMState *env)
+{
+ if (arm_feature(env, ARM_FEATURE_EL2)) {
+ return !arm_is_secure_below_el3(env);
+ }
+ return false;
+}
+
#else
static inline bool arm_is_secure_below_el3(CPUARMState *env)
{
@@ -2158,6 +2170,11 @@ static inline bool arm_is_secure(CPUARMState *env)
{
return false;
}
+
+static inline bool arm_is_el2_enabled(CPUARMState *env)
+{
+ return false;
+}
#endif
/**