Enables or disables EL0 access to specfic Performance Monitors.
This register is present only when FEAT_PMUv3p9 is implemented. Otherwise, direct accesses to PMUACR_EL1 are UNDEFINED.
PMUACR_EL1 is a 64-bit register.
| 63 | 62 | 61 | 60 | 59 | 58 | 57 | 56 | 55 | 54 | 53 | 52 | 51 | 50 | 49 | 48 | 47 | 46 | 45 | 44 | 43 | 42 | 41 | 40 | 39 | 38 | 37 | 36 | 35 | 34 | 33 | 32 |
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RES0 | F0 | ||||||||||||||||||||||||||||||
| C | P30 | P29 | P28 | P27 | P26 | P25 | P24 | P23 | P22 | P21 | P20 | P19 | P18 | P17 | P16 | P15 | P14 | P13 | P12 | P11 | P10 | P9 | P8 | P7 | P6 | P5 | P4 | P3 | P2 | P1 | P0 |
Reserved, RES0.
EL0 accesses to fixed-function counter <m> enable.
| F<m> | Meaning |
|---|---|
| 0b0 |
If the Effective value of PMUSERENR_EL0.UEN is 1 then EL0 accesses to fixed-function counter <m> and associated controls are RAZ/WI. |
| 0b1 |
If the Effective value of PMUSERENR_EL0.UEN is 1 then EL0 accesses to fixed-function counter <m> and associated controls are read-only or read/write. |
When the Effective value of PMUSERENR_EL0.UEN is 1 and PMUACR_EL1.F0 is 1:
This field is ignored by the PE when any of the following are true:
The reset behavior of this field is:
Reserved, RES0.
EL0 accesses to PMCCNTR_EL0 enable.
| C | Meaning |
|---|---|
| 0b0 |
If the Effective value of PMUSERENR_EL0.UEN is 1 then EL0 accesses to PMCCNTR_EL0 and associated controls are RAZ/WI. |
| 0b1 |
If the Effective value of PMUSERENR_EL0.UEN is 1 then EL0 accesses to PMCCNTR_EL0 and associated controls are read-only or read/write. |
When the Effective value of PMUSERENR_EL0.UEN is 1 and PMUACR_EL1.C is 1:
This field is ignored by the PE when any of the following are true:
The reset behavior of this field is:
EL0 accesses to PMEVCNTR<m>_EL0 enable.
| P<m> | Meaning |
|---|---|
| 0b0 |
If the Effective value of PMUSERENR_EL0.UEN is 1 then EL0 accesses to PMEVCNTR<m>_EL0 and associated controls are RAZ/WI. |
| 0b1 |
If the Effective value of PMUSERENR_EL0.UEN is 1 then EL0 accesses to PMEVCNTR<m>_EL0 and associated controls are read-only or read/write. |
When the Effective value of PMUSERENR_EL0.UEN is 1 and PMUACR_EL1.P<m> is 1:
This field is ignored by the PE when any of the following are true:
Accessing this field has the following behavior:
The reset behavior of this field is:
Accesses to this register use the following encodings in the System register encoding space:
MRS <Xt>, PMUACR_EL1
| op0 | op1 | CRn | CRm | op2 |
|---|---|---|---|---|
| 0b11 | 0b000 | 0b1001 | 0b1110 | 0b100 |
if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if HaveEL(EL3) && EL3SDDUndefPriority() && MDCR_EL3.EnPM2 == '0' then UNDEFINED; elsif HaveEL(EL3) && EL3SDDUndefPriority() && MDCR_EL3.TPM == '1' then UNDEFINED; elsif EL2Enabled() && IsFeatureImplemented(FEAT_FGT2) && ((HaveEL(EL3) && SCR_EL3.FGTEn2 == '0') || HDFGRTR2_EL2.nPMUACR_EL1 == '0') then AArch64.SystemAccessTrap(EL2, 0x18); elsif EL2Enabled() && MDCR_EL2.TPM == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif HaveEL(EL3) && MDCR_EL3.EnPM2 == '0' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); elsif HaveEL(EL3) && MDCR_EL3.TPM == '1' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else X[t, 64] = PMUACR_EL1; elsif PSTATE.EL == EL2 then if HaveEL(EL3) && EL3SDDUndefPriority() && MDCR_EL3.EnPM2 == '0' then UNDEFINED; elsif HaveEL(EL3) && EL3SDDUndefPriority() && MDCR_EL3.TPM == '1' then UNDEFINED; elsif HaveEL(EL3) && MDCR_EL3.EnPM2 == '0' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); elsif HaveEL(EL3) && MDCR_EL3.TPM == '1' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else X[t, 64] = PMUACR_EL1; elsif PSTATE.EL == EL3 then X[t, 64] = PMUACR_EL1;
MSR PMUACR_EL1, <Xt>
| op0 | op1 | CRn | CRm | op2 |
|---|---|---|---|---|
| 0b11 | 0b000 | 0b1001 | 0b1110 | 0b100 |
if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if HaveEL(EL3) && EL3SDDUndefPriority() && MDCR_EL3.EnPM2 == '0' then UNDEFINED; elsif HaveEL(EL3) && EL3SDDUndefPriority() && MDCR_EL3.TPM == '1' then UNDEFINED; elsif EL2Enabled() && IsFeatureImplemented(FEAT_FGT2) && ((HaveEL(EL3) && SCR_EL3.FGTEn2 == '0') || HDFGWTR2_EL2.nPMUACR_EL1 == '0') then AArch64.SystemAccessTrap(EL2, 0x18); elsif EL2Enabled() && MDCR_EL2.TPM == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif HaveEL(EL3) && MDCR_EL3.EnPM2 == '0' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); elsif HaveEL(EL3) && MDCR_EL3.TPM == '1' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else PMUACR_EL1 = X[t, 64]; elsif PSTATE.EL == EL2 then if HaveEL(EL3) && EL3SDDUndefPriority() && MDCR_EL3.EnPM2 == '0' then UNDEFINED; elsif HaveEL(EL3) && EL3SDDUndefPriority() && MDCR_EL3.TPM == '1' then UNDEFINED; elsif HaveEL(EL3) && MDCR_EL3.EnPM2 == '0' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); elsif HaveEL(EL3) && MDCR_EL3.TPM == '1' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else PMUACR_EL1 = X[t, 64]; elsif PSTATE.EL == EL3 then PMUACR_EL1 = X[t, 64];