DCIMVAC

AArch32 System instruction DCIMVAC performs the same function as AArch64 System instruction DC IVAC.

This instruction is present only when EL1 is capable of using AArch32. Otherwise, direct accesses to DCIMVAC are UNDEFINED.

Attributes

Field descriptions

VA, bits [31:0]

Executing DCIMVAC

It is IMPLEMENTATION DEFINED whether, when this instruction is executed, it can generate a watchpoint. If this instruction can generate a watchpoint this is prioritized in the same way as other watchpoints.

Execution of this instruction might require an address translation from VA to PA, and that translation might fault. For more information, see 'AArch32 data cache maintenance instructions (DC*)'.

Accesses to this instruction use the following encodings in the System instruction encoding space:

MCR{<c>}{<q>} <coproc>, {#}<opc1>, <Rt>, <CRn>, <CRm>{, {#}<opc2>}

coproc	opc1	CRn	CRm	opc2
0b1111	0b000	0b0111	0b0110	0b001

if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if EL2Enabled() && !ELUsingAArch32(EL2) && HSTR_EL2.T7 == '1' then AArch64.AArch32SystemAccessTrap(EL2, 0x03); elsif EL2Enabled() && ELUsingAArch32(EL2) && HSTR.T7 == '1' then AArch32.TakeHypTrapException(0x03); elsif EL2Enabled() && !ELUsingAArch32(EL2) && HCR_EL2.TPCP == '1' then AArch64.AArch32SystemAccessTrap(EL2, 0x03); elsif EL2Enabled() && ELUsingAArch32(EL2) && HCR.TPC == '1' then AArch32.TakeHypTrapException(0x03); else AArch32.DC(R[t], CacheOp_Invalidate, CacheOpScope_PoC); elsif PSTATE.EL == EL2 then AArch32.DC(R[t], CacheOp_Invalidate, CacheOpScope_PoC); elsif PSTATE.EL == EL3 then AArch32.DC(R[t], CacheOp_Invalidate, CacheOpScope_PoC);

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
VA

DCIMVAC, Data Cache line Invalidate by VA to PoC

Purpose

Configuration

Attributes

Field descriptions

VA, bits [31:0]

Executing DCIMVAC

MCR{<c>}{<q>} <coproc>, {#}<opc1>, <Rt>, <CRn>, <CRm>{, {#}<opc2>}