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
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+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)
{