The TRCRSR characteristics are:
Use this to set, or read, the status of the resources.
External register TRCRSR bits [31:0] are architecturally mapped to AArch64 System register TRCRSR[31:0].
This register is present only when FEAT_ETE is implemented. Otherwise, direct accesses to TRCRSR are RES0.
TRCRSR is a 32-bit register.
The TRCRSR bit assignments are:
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 | TA | EVENT[3] | EVENT[2] | EVENT[1] | EVENT[0] | RES0 | EXTIN[3] | EXTIN[2] | EXTIN[1] | EXTIN[0] |
Reserved, RES0.
Tracing active.
TA | Meaning |
---|---|
0b0 |
Tracing is not active. |
0b1 |
Tracing is active. |
On a Trace unit reset, this field resets to an architecturally UNKNOWN value.
Untraced status of ETEEvents.
EVENT[<m>] | Meaning |
---|---|
0b0 |
An ETEEvent <m> has not occurred. |
0b1 |
An ETEEvent <m> has occurred while the resources were in the Paused state. |
This bit is RES0 if TRCIDR4.NUMRSPAIR == 0 || m > TRCIDR0.NUMEVENT.
On a Trace unit reset, this field resets to an architecturally UNKNOWN value.
Reserved, RES0.
The sticky status of the External Input Selectors.
EXTIN[<m>] | Meaning |
---|---|
0b0 |
An event selected by External Input Selector <m> has not occurred. |
0b1 |
At least one event selected by External Input Selector <m> has occurred while the resources were in the Paused state. |
This bit is RES0 if m >= TRCIDR5.NUMEXTINSEL.
On a Trace unit reset, this field resets to an architecturally UNKNOWN value.
Must always be programmed.
Writes are CONSTRAINED UNPREDICTABLE if the trace unit is not in the Idle state.
Reads from this register might return an UNKNOWN value if the trace unit is not in either of the Idle or Stable states.
Component | Offset | Instance |
---|---|---|
ETE | 0x028 | TRCRSR |
This interface is accessible as follows:
30/03/2021 20:51; e3551d56dc294a4d55296a6c10544191ada08a8e
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