[PATCH 01/14] target/arm: add arm_is_el2_enabled() helper

* [PATCH 01/14] target/arm: add arm_is_el2_enabled() helper
       [not found] <2172054.ElGaqSPkdT@basile.remlab.net>
@ 2020-11-02 10:57 ` remi.denis.courmont
  2020-11-02 11:06   ` Peter Maydell
  2020-11-03 16:42   ` Richard Henderson
  2020-11-02 10:57 ` [PATCH 02/14] target/arm: use arm_is_el2_enabled() where applicable remi.denis.courmont
                   ` (12 subsequent siblings)
  13 siblings, 2 replies; 35+ messages in thread
From: remi.denis.courmont @ 2020-11-02 10:57 UTC (permalink / raw)
  To: qemu-arm; +Cc: qemu-devel

From: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>

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>
---
 target/arm/cpu.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index c18a916766..aaf3671806 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -2040,6 +2040,15 @@ 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 */
+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)
 {
@@ -2050,6 +2059,11 @@ static inline bool arm_is_secure(CPUARMState *env)
 {
     return false;
 }
+
+static inline bool arm_is_el2_enabled(CPUARMState *env)
+{
+    return false;
+}
 #endif
 
 /**
-- 
2.29.1



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