TRCIDR8, ID Register 8

The TRCIDR8 characteristics are:

Purpose

Returns the maximum speculation depth of the instruction trace element stream.

Configuration

External register TRCIDR8 bits [31:0] are architecturally mapped to AArch64 System register TRCIDR8[31:0].

This register is present only when FEAT_ETE is implemented. Otherwise, direct accesses to TRCIDR8 are RES0.

Attributes

TRCIDR8 is a 32-bit register.

Field descriptions

313029282726252423222120191817161514131211109876543210
MAXSPEC

MAXSPEC, bits [31:0]

Indicates the maximum speculation depth of the instruction trace element stream. This is the maximum number of P0 elements in the trace element stream that can be speculative at any time.

Accessing TRCIDR8

TRCIDR8 can be accessed through the external debug interface:

ComponentOffsetInstance
ETE0x180TRCIDR8

This interface is accessible as follows:


30/06/2021 15:22; 2a17f7750cfd1ab239f20f6cf29877ba8041794f

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