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JOSCR: Jazelle OS Control Register

Purpose

A Jazelle register, which provides operating system control of the Jazelle Extension.

Configuration

This register is present only when FEAT_AA32 is implemented. Otherwise, direct accesses to JOSCR are UNDEFINED.

Attributes

JOSCR is a 32-bit register.

Field descriptions

313029282726252423222120191817161514131211109876543210
RAZ/WI

Bits [31:0]

Reserved, RAZ/WI.

Accessing JOSCR

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

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

coprocopc1CRnCRmopc2
0b11100b1110b00010b00000b000

if !IsFeatureImplemented(FEAT_AA32) then UNDEFINED; elsif PSTATE.EL == EL0 then if boolean IMPLEMENTATION_DEFINED "JOSCR UNDEFINED at EL0" then UNDEFINED; else R[t] = JOSCR; elsif PSTATE.EL == EL1 then R[t] = JOSCR; elsif PSTATE.EL == EL2 then R[t] = JOSCR; elsif PSTATE.EL == EL3 then R[t] = JOSCR;

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

coprocopc1CRnCRmopc2
0b11100b1110b00010b00000b000

if !IsFeatureImplemented(FEAT_AA32) then UNDEFINED; elsif PSTATE.EL == EL0 then if boolean IMPLEMENTATION_DEFINED "JOSCR UNDEFINED at EL0" then UNDEFINED; else return; elsif PSTATE.EL == EL1 then return; elsif PSTATE.EL == EL2 then return; elsif PSTATE.EL == EL3 then return;