AMEVCNTVOFF0<n>_EL2, Activity Monitors Event Counter Virtual Offset Registers 0, n = 0 - 15

Accessing AMEVCNTVOFF0<n>_EL2

If <n> is not 0, 2 or 3, reads and writes of AMEVCNTVOFF0<n>_EL2 are UNDEFINED.

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

MRS <Xt>, AMEVCNTVOFF0<m>_EL2 ; Where m = 0-15

op0	op1	CRn	CRm	op2
0b11	0b100	0b1101	0b100:m[3]	m[2:0]

integer m = UInt(CRm<0>:op2<2:0>); if m >= 4 then UNDEFINED; elsif m != 0 && m != 2 && m != 3 then UNDEFINED; elsif PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if EL2Enabled() && HCR_EL2.<NV2,NV> == '11' then X[t, 64] = NVMem[0xA00 + (8 * m)]; elsif EL2Enabled() && HCR_EL2.NV == '1' then AArch64.SystemAccessTrap(EL2, 0x18); else UNDEFINED; elsif PSTATE.EL == EL2 then if Halted() && HaveEL(EL3) && EDSCR.SDD == '1' && boolean IMPLEMENTATION_DEFINED "EL3 trap priority when SDD == '1'" && CPTR_EL3.TAM == '1' then UNDEFINED; elsif Halted() && HaveEL(EL3) && EDSCR.SDD == '1' && boolean IMPLEMENTATION_DEFINED "EL3 trap priority when SDD == '1'" && SCR_EL3.AMVOFFEN == '0' then UNDEFINED; elsif HaveEL(EL3) && SCR_EL3.AMVOFFEN == '0' then if Halted() && EDSCR.SDD == '1' then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); elsif HaveEL(EL3) && CPTR_EL3.TAM == '1' then if Halted() && EDSCR.SDD == '1' then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else X[t, 64] = AMEVCNTVOFF0_EL2[m]; elsif PSTATE.EL == EL3 then X[t, 64] = AMEVCNTVOFF0_EL2[m];

MSR AMEVCNTVOFF0<m>_EL2, <Xt> ; Where m = 0-15

op0	op1	CRn	CRm	op2
0b11	0b100	0b1101	0b100:m[3]	m[2:0]

integer m = UInt(CRm<0>:op2<2:0>); if m >= 4 then UNDEFINED; elsif m != 0 && m != 2 && m != 3 then UNDEFINED; elsif PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if EL2Enabled() && HCR_EL2.<NV2,NV> == '11' then NVMem[0xA00 + (8 * m)] = X[t, 64]; elsif EL2Enabled() && HCR_EL2.NV == '1' then AArch64.SystemAccessTrap(EL2, 0x18); else UNDEFINED; elsif PSTATE.EL == EL2 then if Halted() && HaveEL(EL3) && EDSCR.SDD == '1' && boolean IMPLEMENTATION_DEFINED "EL3 trap priority when SDD == '1'" && CPTR_EL3.TAM == '1' then UNDEFINED; elsif Halted() && HaveEL(EL3) && EDSCR.SDD == '1' && boolean IMPLEMENTATION_DEFINED "EL3 trap priority when SDD == '1'" && SCR_EL3.AMVOFFEN == '0' then UNDEFINED; elsif HaveEL(EL3) && SCR_EL3.AMVOFFEN == '0' then if Halted() && EDSCR.SDD == '1' then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); elsif HaveEL(EL3) && CPTR_EL3.TAM == '1' then if Halted() && EDSCR.SDD == '1' then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else AMEVCNTVOFF0_EL2[m] = X[t, 64]; elsif PSTATE.EL == EL3 then AMEVCNTVOFF0_EL2[m] = X[t, 64];