The BPIALLIS characteristics are:
Invalidate all entries from branch predictors Inner Shareable.
In an implementation where the branch predictors are architecturally invisible, this instruction can execute as a NOP.
BPIALLIS is a 32-bit System instruction.
BPIALLIS ignores the value in the register specified by the instruction encoding. Software does not have to write a value to the register before issuing this 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:
opc1 | opc2 | CRn | coproc | CRm |
---|---|---|---|---|
0b000 | 0b110 | 0b0111 | 0b1111 | 0b0001 |
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); else BPIALL(); elsif PSTATE.EL == EL2 then BPIALL(); elsif PSTATE.EL == EL3 then BPIALL();
13/12/2018 16:42; 6379d01c197f1d40720d32d0f84c419c9187c009
Copyright © 2010-2018 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.