SPMCGCR<n>_EL1, System PMU Counter Group Configuration Register <n>, n = 0 - 1

Accessing SPMCGCR<n>_EL1

To access SPMCGCR<n>_EL1 for System PMU <s>, set SPMSELR_EL0.SYSPMUSEL to s.

SPMCGCR<n>_EL1 reads-as-zero if any of the following are true:

• System PMU <s> implements one counter group (SPMCFGR_EL1.NCG is zero).
• System PMU <s> is not implemented.

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

op0	op1	CRn	CRm	op2
0b10	0b000	0b1001	0b1101	0b00:m[0]

integer m = UInt(op2<0>); 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() && SPMACCESSR_EL3<(UInt(SPMSELR_EL0.SYSPMUSEL) * 2) + 1:UInt(SPMSELR_EL0.SYSPMUSEL) * 2> == '00' then UNDEFINED; elsif EL2Enabled() && IsFeatureImplemented(FEAT_FGT2) && ((HaveEL(EL3) && SCR_EL3.FGTEn2 == '0') || HDFGRTR2_EL2.nSPMID == '0') then AArch64.SystemAccessTrap(EL2, 0x18); elsif EL2Enabled() && MDCR_EL2.EnSPM == '0' then AArch64.SystemAccessTrap(EL2, 0x18); elsif EL2Enabled() && SPMACCESSR_EL2<(UInt(SPMSELR_EL0.SYSPMUSEL) * 2) + 1:UInt(SPMSELR_EL0.SYSPMUSEL) * 2> == '00' 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) && SPMACCESSR_EL3<(UInt(SPMSELR_EL0.SYSPMUSEL) * 2) + 1:UInt(SPMSELR_EL0.SYSPMUSEL) * 2> == '00' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else X[t, 64] = SPMCGCR_EL1[UInt(SPMSELR_EL0.SYSPMUSEL), m]; elsif PSTATE.EL == EL2 then if HaveEL(EL3) && EL3SDDUndefPriority() && MDCR_EL3.EnPM2 == '0' then UNDEFINED; elsif HaveEL(EL3) && EL3SDDUndefPriority() && SPMACCESSR_EL3<(UInt(SPMSELR_EL0.SYSPMUSEL) * 2) + 1:UInt(SPMSELR_EL0.SYSPMUSEL) * 2> == '00' then UNDEFINED; elsif HaveEL(EL3) && MDCR_EL3.EnPM2 == '0' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); elsif HaveEL(EL3) && SPMACCESSR_EL3<(UInt(SPMSELR_EL0.SYSPMUSEL) * 2) + 1:UInt(SPMSELR_EL0.SYSPMUSEL) * 2> == '00' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else X[t, 64] = SPMCGCR_EL1[UInt(SPMSELR_EL0.SYSPMUSEL), m]; elsif PSTATE.EL == EL3 then X[t, 64] = SPMCGCR_EL1[UInt(SPMSELR_EL0.SYSPMUSEL), m];