ATS12NSOUW, Address Translate Stages 1 and 2 Non-secure Only Unprivileged Write

The ATS12NSOUW characteristics are:

Purpose

Performs stage 1 and 2 address translations as defined for PL0 and the Non-secure state, with permissions as if writing to the given virtual address.

Configuration

Attributes

ATS12NSOUW is a 32-bit System instruction.

Field descriptions

The ATS12NSOUW input value bit assignments are:

313029282726252423222120191817161514131211109876543210
Input address for translation

Bits [31:0]

Input address for translation. The resulting address can be read from the PAR.

This instruction takes a VA as input. The resulting address is the PA that is the output address of the stage 2 translation.

Executing the ATS12NSOUW instruction

Accesses to this instruction use the following encodings:

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

opc1opc2CRncoprocCRm
0b0000b1110b01110b11110b1000

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 !ELUsingAArch32(EL2) && SCR_EL3.<NS,EEL2> == '01' then AArch64.AArch32SystemAccessTrap(EL2, 0x03); elsif !ELUsingAArch32(EL3) && SCR_EL3.NS == '0' then AArch64.AArch32SystemAccessTrap(EL3, 0x03); else UNDEFINED; elsif PSTATE.EL == EL2 then ATS12NSOUW(R[t]); elsif PSTATE.EL == EL3 then ATS12NSOUW(R[t]);




13/12/2018 16:42; 6379d01c197f1d40720d32d0f84c419c9187c009

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