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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 ETE is implemented. Otherwise, direct accesses to TRCIDR12 are RES0.

Attributes

TRCIDR12 is a 32-bit register.

Field descriptions

The TRCIDR12 bit assignments are:

313029282726252423222120191817161514131211109876543210
NUMCONDKEY

NUMCONDKEY, bits [31:0]

When TRCIDR0.TRCCOND == 0b1:

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 the TRCIDR12

TRCIDR12 can be accessed through the external debug interface:

ComponentOffset
ETE0x190

This interface is accessible as follows:

  • When OSLockStatus() or !IsTraceCorePowered() access to this register returns an Error.
  • Otherwise access to this register is RO.


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