CurrentEL Current Exception Level when FEAT_AA64 is implemented Holds the current Exception level. PSTATE CurrentEL is a 64-bit register. 63 4 63:4 Reserved, RES0. EL 3 2 3:2 Current Exception level. When the Effective value of HCR_EL2.NV is 1, EL1 read accesses to the CurrentEL register return the value of 0b10 in this field. 0b00 EL0. 0b01 EL1. 0b10 EL2. 0b11 EL3. '01' '10' '11' 1 0 1:0 Reserved, RES0. MRS <Xt>, CurrentEL if !IsFeatureImplemented(FEAT_AA64) then Undefined(); elsif PSTATE.EL == EL0 then Undefined(); elsif PSTATE.EL == EL1 then if EffectiveHCR_EL2_NVx() IN {'xx1'} then X{64}(t) = Zeros{60} :: '10' :: Zeros{2}; else X{64}(t) = Zeros{60} :: PSTATE.EL :: Zeros{2}; end; elsif PSTATE.EL == EL2 then X{64}(t) = Zeros{60} :: PSTATE.EL :: Zeros{2}; elsif PSTATE.EL == EL3 then X{64}(t) = Zeros{60} :: PSTATE.EL :: Zeros{2}; end; 2026-03-26 20:27:25 2026-03_rel