ICIALLUIS, Instruction Cache Invalidate All to PoU, Inner Shareable
The ICIALLUIS characteristics are:
Purpose
Invalidate all instruction caches Inner Shareable to PoU. If branch predictors are architecturally visible, also flush branch predictors.
Configuration
AArch32 System instruction ICIALLUIS performs the same function as AArch64 System instruction IC IALLUIS.
This instruction is present only when AArch32 is supported at any Exception level. Otherwise, direct accesses to ICIALLUIS are UNKNOWN.
Attributes
ICIALLUIS is a 32-bit System instruction.
Field descriptions
This instruction has no applicable fields.
The value in the register specified by <Rt> is ignored.
Executing the ICIALLUIS instruction
The PE ignores the value of <Rt>. Software does not have to write a value to this register before issuing this instruction.
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 | 0b0001 | 0b000 |
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.TICAB == '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.TICAB == '1' then
AArch32.TakeHypTrapException(0x03);
elsif EL2Enabled() && ELUsingAArch32(EL2) && HCR2.TOCU == '1' then
AArch32.TakeHypTrapException(0x03);
else
ICIALLUIS();
elsif PSTATE.EL == EL2 then
ICIALLUIS();
elsif PSTATE.EL == EL3 then
ICIALLUIS();