DBGAUTHSTATUS Debug Authentication Status register when FEAT_AA32EL1 is implemented DBGAUTHSTATUS_EL1 Architectural AArch64 31 0 31 0 31 0 31 0 DBGAUTHSTATUS_EL1 Architectural External 31 0 31 0 31 0 31 0 Provides information about the state of the IMPLEMENTATION DEFINED authentication interface for debug. Debug This register is required in all implementations. DBGAUTHSTATUS is a 32-bit register. 31 8 31:8 Reserved, RES0. SNID 7 6 1:0 Secure Non-Invasive Debug. This field has the same value as DBGAUTHSTATUS.SID. When FEAT_Debugv8p4 is implemented SNID 7 6 1:0 Secure Non-Invasive Debug. All other values are reserved. 0b00 Secure state is not implemented. 0b10 Implemented and disabled. ExternalSecureNoninvasiveDebugEnabled() == FALSE. 0b11 Implemented and enabled. ExternalSecureNoninvasiveDebugEnabled() == TRUE. Otherwise SID 5 4 5:4 Secure Invasive Debug. All other values are reserved. 0b00 Secure state is not implemented. 0b10 Implemented and disabled. ExternalSecureInvasiveDebugEnabled() == FALSE. 0b11 Implemented and enabled. ExternalSecureInvasiveDebugEnabled() == TRUE. NSNID 3 2 1:0 Non-secure Non-invasive debug. All other values are reserved. 0b00 Non-secure state is not implemented. 0b11 Implemented and enabled. EL3 is implemented or the Effective value of SCR.NS is 1. When FEAT_Debugv8p4 is implemented NSNID 3 2 1:0 Non-secure Non-Invasive Debug. All other values are reserved. 0b00 Non-secure state is not implemented. 0b10 Implemented and disabled. ExternalNoninvasiveDebugEnabled() == FALSE. 0b11 Implemented and enabled. ExternalNoninvasiveDebugEnabled() == TRUE. Otherwise NSID 1 0 1:0 Non-secure Invasive Debug. All other values are reserved. 0b00 Non-secure state is not implemented. 0b10 Implemented and disabled. ExternalInvasiveDebugEnabled() == FALSE. 0b11 Implemented and enabled. ExternalInvasiveDebugEnabled() == TRUE. MRC{<c>}{<q>} <coproc>, {#}<opc1>, <Rt>, <CRn>, <CRm>{, {#}<opc2>} if !IsFeatureImplemented(FEAT_AA32EL1) then Undefined(); elsif PSTATE.EL == EL0 then Undefined(); elsif PSTATE.EL == EL1 then if HaveEL(EL3) && EL3SDDUndefPriority() && IsFeatureImplemented(FEAT_AA64EL3) && !ELUsingAArch32(EL3) && MDCR_EL3().TDA == '1' then Undefined(); elsif EL2Enabled() && IsFeatureImplemented(FEAT_AA64EL2) && !ELUsingAArch32(EL2) && MDCR_EL2().[TDE,TDA] != '00' then AArch64_AArch32SystemAccessTrap(EL2, 0x05); elsif EL2Enabled() && IsFeatureImplemented(FEAT_AA32EL2) && ELUsingAArch32(EL2) && HDCR().[TDE,TDA] != '00' then AArch32_TakeHypTrapException(0x05); elsif HaveEL(EL3) && IsFeatureImplemented(FEAT_AA64EL3) && !ELUsingAArch32(EL3) && MDCR_EL3().TDA == '1' then if EL3SDDUndef() then Undefined(); else AArch64_AArch32SystemAccessTrap(EL3, 0x05); end; else R(t) = DBGAUTHSTATUS(); end; elsif PSTATE.EL == EL2 then if HaveEL(EL3) && EL3SDDUndefPriority() && IsFeatureImplemented(FEAT_AA64EL3) && !ELUsingAArch32(EL3) && MDCR_EL3().TDA == '1' then Undefined(); elsif HaveEL(EL3) && IsFeatureImplemented(FEAT_AA64EL3) && !ELUsingAArch32(EL3) && MDCR_EL3().TDA == '1' then if EL3SDDUndef() then Undefined(); else AArch64_AArch32SystemAccessTrap(EL3, 0x05); end; else R(t) = DBGAUTHSTATUS(); end; elsif PSTATE.EL == EL3 then R(t) = DBGAUTHSTATUS(); end; 2026-03-26 20:27:25 2026-03_rel