DCPS3

Debug Change PE State to EL3, when executed in Debug state:

• If executed at EL3 selects SP_EL3.
• Otherwise, changes the current Exception level and SP to EL3 using SP_EL3.

The target exception level of a DCPS3 instruction is EL3.

On executing a DCPS3 instruction:

• ELR_EL3 becomes unknown.
• SPSR_EL3 becomes unknown.
• ESR_EL3 becomes unknown.
• DLR_EL0 and DSPSR_EL0 become unknown.
• The endianness is set according to SCTLR_EL3.EE.

This instruction is undefined at all exception levels if either:

• EDSCR.SDD == 1.
• EL3 is not implemented.

This instruction is always undefined in Non-debug state.

For more information on the operation of the DCPSn instructions, see DCPS.

bits(2) target_level = LL; if LL == '00' then UNDEFINED; if !Halted() then UNDEFINED;