TRCIDR12, ID Register 12

The TRCIDR12 characteristics are:

Purpose

Returns the tracing capabilities of the trace unit.

Configuration

External register TRCIDR12 bits [31:0] are architecturally mapped to AArch64 System register TRCIDR12[31:0].

This register is present only when FEAT_ETE is implemented. Otherwise, direct accesses to TRCIDR12 are RES0.

Attributes

TRCIDR12 is a 32-bit register.

Field descriptions

313029282726252423222120191817161514131211109876543210
NUMCONDKEY

NUMCONDKEY, bits [31:0]
When TRCIDR0.TRCCOND == 1:

Indicates the number of conditional instruction right-hand keys. Conditional instruction tracing is not implemented in ETE and this field is reserved for other trace architectures. Allocated in other trace architectures.


Otherwise:

Reserved, RES0.

Accessing TRCIDR12

TRCIDR12 can be accessed through the external debug interface:

ComponentOffsetInstance
ETE0x190TRCIDR12

This interface is accessible as follows:


20/09/2021 12:37; d4a233ffbdfb36e47856c443a7ce9a85f5e501ca

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