Commit 81669b8b authored by Sergey Fedorov's avatar Sergey Fedorov Committed by Peter Maydell
Browse files

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: default avatarSergey Fedorov <serge.fdrv@gmail.com>
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent 74de8c35

target-arm/cpu.h

+16 −1
Original line number Diff line number Diff line
@@ -1702,8 +1702,23 @@ static inline int cpu_mmu_index(CPUARMState *env, bool ifetch) 
 */

static inline int arm_debug_target_el(CPUARMState *env)

{

    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)

{