TRCVIIECTLR, ViewInst Include/Exclude Control Register
The TRCVIIECTLR characteristics are:
Purpose
Use this to select, or read, the Address Range Comparators for the ViewInst include/exclude function.
Configuration
External register TRCVIIECTLR bits [31:0] are architecturally mapped to AArch64 System register TRCVIIECTLR[31:0] .
This register is present only when FEAT_ETE is implemented and TRCIDR4.NUMACPAIRS > 0b0000. Otherwise, direct accesses to TRCVIIECTLR are RES0.
Attributes
TRCVIIECTLR is a 32-bit register.
Field descriptions
The TRCVIIECTLR 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 | EXCLUDE<m>, bit [m+16] | RES0 | INCLUDE<m>, bit [m] | ||||||||||||||||||||||||||||
Bits [31:24]
Reserved, RES0.
EXCLUDE<m>, bit [m+16], for m = 0 to 7
Selects which Address Range Comparators are in use with the ViewInst exclude function.
Each bit represents an Address Range Comparator, so bit[m] controls the selection of Address Range Comparator m.
| EXCLUDE<m> | Meaning |
|---|---|
| 0b0 |
The address range that Address Range Comparator m defines, is not selected for the ViewInst exclude function. |
| 0b1 |
The address range that Address Range Comparator m defines, is selected for the ViewInst exclude function. |
This bit is RES0 if m >= TRCIDR4.NUMACPAIRS.
On a Trace unit reset, this field resets to an architecturally UNKNOWN value.
Bits [15:8]
Reserved, RES0.
INCLUDE<m>, bit [m], for m = 0 to 7
Selects which Address Range Comparators are in use with the ViewInst include function.
Each bit represents an Address Range Comparator, so bit[m] controls the selection of Address Range Comparator m.
Selecting no comparators for the ViewInst include function indicates that all instructions are included by default.
The ViewInst exclude function then indicates which ranges are excluded.
| INCLUDE<m> | Meaning |
|---|---|
| 0b0 |
The address range that Address Range Comparator m defines, is not selected for the ViewInst include function. |
| 0b1 |
The address range that Address Range Comparator m defines, is selected for the ViewInst include function. |
This bit is RES0 if m >= TRCIDR4.NUMACPAIRS.
On a Trace unit reset, this field resets to an architecturally UNKNOWN value.
Accessing the TRCVIIECTLR
Must be programmed if TRCIDR4.NUMACPAIRS > 0b0000.
Writes are CONSTRAINED UNPREDICTABLE if the trace unit is not in the Idle state.
TRCVIIECTLR can be accessed through the external debug interface:
| Component | Offset |
|---|---|
| ETE | 0x084 |
This interface is accessible as follows:
- When OSLockStatus(), or !AllowExternalTraceAccess() or !IsTraceCorePowered() accesses to this register generate an error response.
- Otherwise accesses to this register are RW.