PMICNTSVR_EL1, Performance Monitors Instruction Count Saved Value Register

The PMICNTSVR_EL1 characteristics are:

Purpose

Captures the PMU Instruction counter, PMICNTR_EL0.

Configuration

External register PMICNTSVR_EL1 bits [63:0] are architecturally mapped to AArch64 System register PMICNTSVR_EL1[63:0].

This register is present only when FEAT_PMUv3_ICNTR is implemented and FEAT_PMUv3_SS is implemented. Otherwise, direct accesses to PMICNTSVR_EL1 are RES0.

Attributes

PMICNTSVR_EL1 is a 64-bit register.

This register is part of the PMU block.

Field descriptions

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
ICNT
ICNT

ICNT, bits [63:0]

Sampled Instruction Count. The value of PMICNTR_EL0 at the last successful Capture event.

The reset behavior of this field is:

On a Warm reset, this field resets to an architecturally UNKNOWN value.

Accessing PMICNTSVR_EL1

Accesses to this register use the following encodings:

Accessible at offset 0x700 from PMU

Accesses on this interface are RO.

26/03/2024 09:49; 67c0ae5282a7629ba0ea0ba7267b43cd4f7939f6