DCPS2

Debug Change PE State to EL2 allows the debugger to move the PE into EL2 from a lower Exception level.

DCPS2 is undefined if any of:

When the PE executes DCPS2:

For more information on the operation of the DCPS<n> instructions, see DCPS.

T1

15141312111098765432101514131211109876543210
11110111100011111000000000000010

T1

DCPS2

if !HaveEL(EL2) then UNDEFINED;

Operation

if !Halted() || !EL2Enabled() then UNDEFINED; if ELUsingAArch32(EL2) then AArch32.WriteMode(M32_Hyp); PSTATE.E = HSCTLR.EE; ELR_hyp = bits(32) UNKNOWN; HSR = bits(32) UNKNOWN; SPSR_hyp = bits(32) UNKNOWN; DLR = bits(32) UNKNOWN; DSPSR = bits(32) UNKNOWN; else // Targeting EL2 using AArch64 AArch64.MaybeZeroRegisterUppers(); MaybeZeroSVEUppers(EL2); PSTATE.nRW = '0'; PSTATE.SP = '1'; PSTATE.EL = EL2; if HavePANExt() && SCTLR_EL2.SPAN == '0' && HCR_EL2.E2H == '1' && HCR_EL2.TGE == '1' then PSTATE.PAN = '1'; if HaveUAOExt() then PSTATE.UAO = '0'; ELR_EL2 = bits(64) UNKNOWN; ESR_EL2 = bits(64) UNKNOWN; SPSR_EL2 = bits(64) UNKNOWN; DLR_EL0 = bits(64) UNKNOWN; DSPSR_EL0 = bits(64) UNKNOWN; // SCTLR_EL2.IESB might be ignored in Debug state. if (HaveIESB() && SCTLR_EL2.IESB == '1' && !ConstrainUnpredictableBool(Unpredictable_IESBinDebug)) then SynchronizeErrors(); UpdateEDSCRFields(); // Update EDSCR PE state flags


Internal version only: isa v01_31, pseudocode v2023-06_rel, sve v2023-06_rel ; Build timestamp: 2023-07-04T18:06

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