diff options
Diffstat (limited to 'target/arm/helper.c')
| -rw-r--r-- | target/arm/helper.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index 51330a0c48..cf8e80419d 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -4431,6 +4431,24 @@ static const ARMCPRegInfo uao_reginfo = { .readfn = aa64_uao_read, .writefn = aa64_uao_write }; +static uint64_t aa64_dit_read(CPUARMState *env, const ARMCPRegInfo *ri) +{ + return env->pstate & PSTATE_DIT; +} + +static void aa64_dit_write(CPUARMState *env, const ARMCPRegInfo *ri, + uint64_t value) +{ + env->pstate = (env->pstate & ~PSTATE_DIT) | (value & PSTATE_DIT); +} + +static const ARMCPRegInfo dit_reginfo = { + .name = "DIT", .state = ARM_CP_STATE_AA64, + .opc0 = 3, .opc1 = 3, .crn = 4, .crm = 2, .opc2 = 5, + .type = ARM_CP_NO_RAW, .access = PL0_RW, + .readfn = aa64_dit_read, .writefn = aa64_dit_write +}; + static CPAccessResult aa64_cacheop_poc_access(CPUARMState *env, const ARMCPRegInfo *ri, bool isread) @@ -8224,6 +8242,10 @@ void register_cp_regs_for_features(ARMCPU *cpu) define_one_arm_cp_reg(cpu, &uao_reginfo); } + if (cpu_isar_feature(aa64_dit, cpu)) { + define_one_arm_cp_reg(cpu, &dit_reginfo); + } + if (arm_feature(env, ARM_FEATURE_EL2) && cpu_isar_feature(aa64_vh, cpu)) { define_arm_cp_regs(cpu, vhe_reginfo); } |