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| author | Sergey Fedorov <serge.fdrv@gmail.com> | 2015-09-14 13:53:48 +0300 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2015-10-16 13:34:02 +0100 |
| commit | 81669b8b81eb450d7b89ee5fdd57bdb73d87022d (patch) | |
| tree | d0aa921bf93d96355116024b43696c9d13d75d7e /target-arm | |
| parent | 74de8c356844080fcabc3a44b08b9d22feda691f (diff) | |
target-arm: implement arm_debug_target_el()
Implement debug exception routing according to ARM ARM D2.3.1 Pseudocode
description of routing debug exceptions.
Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/cpu.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/target-arm/cpu.h b/target-arm/cpu.h index e555122d17..3daa7f58f9 100644 --- a/target-arm/cpu.h +++ b/target-arm/cpu.h @@ -1702,7 +1702,22 @@ static inline int cpu_mmu_index(CPUARMState *env, bool ifetch) */ 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) |