DCPS3 -- A64

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.

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
1	1	0	1	0	1	0	0	1	0	1	imm16																0	0	0	1	1
																														LL

DCPS3 {#<imm>}

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

Assembler Symbols

<imm>

Is an optional 16-bit unsigned immediate, in the range 0 to 65535, defaulting to 0 and encoded in the "imm16" field.

Operation

DCPSInstruction(target_level);

Internal version only: isa v32.13, AdvSIMD v29.04, pseudocode morello-2022-01_rc2, capabilities morello-2022-01_rc2 ; Build timestamp: 2022-01-11T11:23