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S1_<op1>_<Cn>_<Cm>_<op2>, IMPLEMENTATION DEFINED maintenance instructions
The S1_<op1>_<Cn>_<Cm>_<op2> characteristics are:
Purpose
This area of the System instruction encoding space is reserved for IMPLEMENTATION DEFINED System instructions.
Configuration
There are no configuration notes.
Attributes
S1_<op1>_<Cn>_<Cm>_<op2> is a 64-bit System instruction.
Field descriptions
The S1_<op1>_<Cn>_<Cm>_<op2> input value bit assignments are:
| 63 | 62 | 61 | 60 | 59 | 58 | 57 | 56 | 55 | 54 | 53 | 52 | 51 | 50 | 49 | 48 | 47 | 46 | 45 | 44 | 43 | 42 | 41 | 40 | 39 | 38 | 37 | 36 | 35 | 34 | 33 | 32 |
| IMPLEMENTATION DEFINED | |||||||||||||||||||||||||||||||
| IMPLEMENTATION DEFINED | |||||||||||||||||||||||||||||||
| 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 |
IMPLEMENTATION DEFINED, bits [63:0]
IMPLEMENTATION DEFINED.
Executing the S1_<op1>_<Cn>_<Cm>_<op2> instruction
Accesses to this instruction use the following encodings:
SYS #<op1>, <Cn>, <Cm>, #<op2>{, <Xt>}
| op0 | op1 | CRn | CRm | op2 |
|---|---|---|---|---|
| 0b01 | op1[2:0] | 0b1x11 | Cm[3:0] | op2[2:0] |
if PSTATE.EL == EL1 then
if EL2Enabled() && HCR_EL2.TIDCP == '1' then
AArch64.SystemAccessTrap(EL2, 0x18);
else
IMPLEMENTATION_DEFINED "";
else
IMPLEMENTATION_DEFINED "";
SYSL <Xt>, #<op1>, <Cn>, <Cm>, #<op2>
| op0 | op1 | CRn | CRm | op2 |
|---|---|---|---|---|
| 0b01 | op1[2:0] | 0b1x11 | Cm[3:0] | op2[2:0] |
if PSTATE.EL == EL1 then
if EL2Enabled() && HCR_EL2.TIDCP == '1' then
AArch64.SystemAccessTrap(EL2, 0x18);
else
IMPLEMENTATION_DEFINED "";
else
IMPLEMENTATION_DEFINED "";