Index

DC

Data Cache operation. For more information, see op0==0b01, cache maintenance, TLB maintenance, and address translation instructions.

This is an alias of SYS. This means:

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 1 0 0 0 0 1 op1 0 1 1 1 CRm op2 Rt
L CRn

DC <dc_op>, <Xt>

is equivalent to

SYS #<op1>, C7, <Cm>, #<op2>, <Xt>

and is the preferred disassembly when SysOp(op1,'0111',CRm,op2) == Sys_DC.

Assembler Symbols

<dc_op>

Is a DC instruction name, as listed for the DC system instruction group, encoded in op1:CRm:op2:

op1 CRm op2 <dc_op> Architectural Feature
000 0110 001 IVAC -
000 0110 010 ISW -
000 0110 011 IGVAC FEAT_MTE2
000 0110 100 IGSW FEAT_MTE2
000 0110 101 IGDVAC FEAT_MTE2
000 0110 110 IGDSW FEAT_MTE2
000 1010 010 CSW -
000 1010 100 CGSW FEAT_MTE2
000 1010 110 CGDSW FEAT_MTE2
000 1110 010 CISW -
000 1110 100 CIGSW FEAT_MTE2
000 1110 110 CIGDSW FEAT_MTE2
011 0100 001 ZVA -
011 0100 011 GVA FEAT_MTE
011 0100 100 GZVA FEAT_MTE
011 1010 001 CVAC -
011 1010 011 CGVAC FEAT_MTE
011 1010 101 CGDVAC FEAT_MTE
011 1011 001 CVAU -
011 1100 001 CVAP FEAT_DPB
011 1100 011 CGVAP FEAT_MTE
011 1100 101 CGDVAP FEAT_MTE
011 1101 001 CVADP FEAT_DPB2
011 1101 011 CGVADP FEAT_MTE
011 1101 101 CGDVADP FEAT_MTE
011 1110 001 CIVAC -
011 1110 011 CIGVAC FEAT_MTE
011 1110 101 CIGDVAC FEAT_MTE
100 1110 000 CIPAE FEAT_MEC
100 1110 111 CIGDPAE FEAT_MEC
110 1110 001 CIPAPA FEAT_RME
110 1110 101 CIGDPAPA FEAT_RME
<op1>

Is a 3-bit unsigned immediate, in the range 0 to 7, encoded in the "op1" field.
<Cm>

Is a name 'Cm', with 'm' in the range 0 to 15, encoded in the "CRm" field.
<op2>

Is a 3-bit unsigned immediate, in the range 0 to 7, encoded in the "op2" field.
<Xt>

Is the 64-bit name of the general-purpose source register, encoded in the "Rt" field.

Operation

The description of SYS gives the operational pseudocode for this instruction.