ICIMVAU, Instruction Cache line Invalidate by VA to PoU
The ICIMVAU characteristics are:
Purpose
Invalidate instruction cache line by virtual address to PoU.
Configuration
AArch32 System instruction ICIMVAU performs the same function as AArch64 System instruction IC IVAU.
This instruction is present only when AArch32 is supported at any Exception level. Otherwise, direct accesses to ICIMVAU are UNDEFINED.
Attributes
ICIMVAU is a 32-bit System instruction.
Field descriptions
The ICIMVAU input value bit assignments are:
| 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 |
| Virtual address to use | |||||||||||||||||||||||||||||||
Bits [31:0]
Virtual address to use. No alignment restrictions apply to this VA.
Executing the ICIMVAU instruction
Execution of this instruction might require an address translation from VA to PA, and that translation might fault. For more information, see 'AArch32 instruction cache maintenance instructions (IC*)'.
Accesses to this instruction use the following encodings:
MCR{<c>}{<q>} <coproc>, {#}<opc1>, <Rt>, <CRn>, <CRm>{, {#}<opc2>}
| coproc | opc1 | CRn | CRm | opc2 |
|---|---|---|---|---|
| 0b1111 | 0b000 | 0b0111 | 0b0101 | 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.TPU == '1' then
AArch64.AArch32SystemAccessTrap(EL2, 0x03);
elsif EL2Enabled() && !ELUsingAArch32(EL2) && HCR_EL2.TOCU == '1' then
AArch64.AArch32SystemAccessTrap(EL2, 0x03);
elsif EL2Enabled() && ELUsingAArch32(EL2) && HCR.TPU == '1' then
AArch32.TakeHypTrapException(0x03);
elsif EL2Enabled() && ELUsingAArch32(EL2) && HCR2.TOCU == '1' then
AArch32.TakeHypTrapException(0x03);
else
ICIMVAU(R[t]);
elsif PSTATE.EL == EL2 then
ICIMVAU(R[t]);
elsif PSTATE.EL == EL3 then
ICIMVAU(R[t]);