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[Qemu-devel] [PATCH] target-arm: implement arm_debug_target_el()
From: |
Sergey Fedorov |
Subject: |
[Qemu-devel] [PATCH] target-arm: implement arm_debug_target_el() |
Date: |
Mon, 14 Sep 2015 13:53:48 +0300 |
Implement debug exception routing according to ARM ARM D2.3.1 Pseudocode
description of routing debug exceptions.
Signed-off-by: Sergey Fedorov <address@hidden>
---
target-arm/cpu.h | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 31825d3..84d38b1 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -1692,7 +1692,22 @@ static inline int cpu_mmu_index(CPUARMState *env)
*/
static inline int arm_debug_target_el(CPUARMState *env)
{
- return 1;
+ bool secure = arm_is_secure(env);
+ bool route_to_el2 = false;
+
+ if (arm_feature(env, ARM_FEATURE_EL2) && !secure) {
+ route_to_el2 = env->cp15.hcr_el2 & HCR_TGE ||
+ env->cp15.mdcr_el2 & (1 << 8);
+ }
+
+ if (route_to_el2) {
+ return 2;
+ } else if (arm_feature(env, ARM_FEATURE_EL3) &&
+ !arm_el_is_aa64(env, 3) && secure) {
+ return 3;
+ } else {
+ return 1;
+ }
}
static inline bool aa64_generate_debug_exceptions(CPUARMState *env)
--
1.9.1
- [Qemu-devel] [PATCH] target-arm: implement arm_debug_target_el(),
Sergey Fedorov <=