Returns the tracing capabilities of the trace unit.
External register TRCIDR9 bits [31:0] are architecturally mapped to AArch64 System register TRCIDR9[31:0].
This register is present only when FEAT_ETE is implemented and FEAT_TRC_EXT is implemented. Otherwise, direct accesses to TRCIDR9 are RES0.
TRCIDR9 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 |
NUMP0KEY |
Indicates the number of P0 right-hand keys. Data tracing is not implemented in ETE and this field is reserved for other trace architectures. Allocated in other trace architectures.
This field has an IMPLEMENTATION DEFINED value.
Access to this field is RO.
Reserved, RES0.
Component | Offset | Instance |
---|---|---|
ETE | 0x184 | TRCIDR9 |
This interface is accessible as follows: