TRCSTATR, Trace Status Register

The TRCSTATR characteristics are:

Purpose

Returns the trace unit status.

External register TRCSTATR bits [31:0] are architecturally mapped to AArch64 System register TRCSTATR[31:0].

This register is present only when FEAT_ETE is implemented and FEAT_TRC_EXT is implemented. Otherwise, direct accesses to TRCSTATR are RES0.

TRCSTATR is a 32-bit register.

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																														PMSTABLE	IDLE

Reserved, RES0.

Programmers' model stable.

PMSTABLE	Meaning
0b0	The programmers' model is not stable.
0b1	The programmers' model is stable.

Accessing this field has the following behavior:

Idle status.

IDLE	Meaning
0b0	The trace unit is not idle.
0b1	The trace unit is idle.

Component	Offset	Instance
ETE	0x00C	TRCSTATR

Accessible as follows:

When OSLockStatus(), or !AllowExternalTraceAccess(), or !IsTraceCorePowered(), accesses to this register generate an error response.
Otherwise, accesses to this register are RO.

21/03/2025 17:53; 154105dd5041532b480d9ef0c018b8420cbe5c19