TRCVMIDCCTLR1 | Jon's Arm Reference

Virtual Context Identifier Comparator mask values for the TRCVMIDCVR<n> registers, where n=4-7.

Configuration

External register TRCVMIDCCTLR1 bits [31:0] are architecturally mapped to AArch64 System register TRCVMIDCCTLR1[31:0].

This register is present only when FEAT_ETE is implemented, FEAT_TRC_EXT is implemented, UInt(TRCIDR4.NUMVMIDC) > 0x4 and UInt(TRCIDR2.VMIDSIZE) > 0. Otherwise, direct accesses to TRCVMIDCCTLR1 are RES0.

Attributes

Field descriptions

COMP7[<m>], bit [m+24], for m = 7 to 0

When UInt(TRCIDR4.NUMVMIDC) > 7:

TRCVMIDCVR7 mask control. Specifies the mask value that the trace unit applies to TRCVMIDCVR7. Each bit in this field corresponds to a byte in TRCVMIDCVR7.

COMP7[<m>]	Meaning
0b0	The trace unit includes TRCVMIDCVR7[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison.
0b1	The trace unit ignores TRCVMIDCVR7[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison.

The reset behavior of this field is:

On a Trace unit reset, this field resets to an architecturally UNKNOWN value.

Accessing this field has the following behavior:

When m >= UInt(TRCIDR2.VMIDSIZE), access to this field is RES0.
Otherwise, access to this field is RW.

Otherwise:

COMP6[<m>], bit [m+16], for m = 7 to 0

When UInt(TRCIDR4.NUMVMIDC) > 6:

TRCVMIDCVR6 mask control. Specifies the mask value that the trace unit applies to TRCVMIDCVR6. Each bit in this field corresponds to a byte in TRCVMIDCVR6.

COMP6[<m>]	Meaning
0b0	The trace unit includes TRCVMIDCVR6[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison.
0b1	The trace unit ignores TRCVMIDCVR6[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison.

The reset behavior of this field is:

On a Trace unit reset, this field resets to an architecturally UNKNOWN value.

Accessing this field has the following behavior:

When m >= UInt(TRCIDR2.VMIDSIZE), access to this field is RES0.
Otherwise, access to this field is RW.

Otherwise:

COMP5[<m>], bit [m+8], for m = 7 to 0

When UInt(TRCIDR4.NUMVMIDC) > 5:

TRCVMIDCVR5 mask control. Specifies the mask value that the trace unit applies to TRCVMIDCVR5. Each bit in this field corresponds to a byte in TRCVMIDCVR5.

COMP5[<m>]	Meaning
0b0	The trace unit includes TRCVMIDCVR5[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison.
0b1	The trace unit ignores TRCVMIDCVR5[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison.

The reset behavior of this field is:

On a Trace unit reset, this field resets to an architecturally UNKNOWN value.

Accessing this field has the following behavior:

When m >= UInt(TRCIDR2.VMIDSIZE), access to this field is RES0.
Otherwise, access to this field is RW.

Otherwise:

COMP4[<m>], bit [m], for m = 7 to 0

When UInt(TRCIDR4.NUMVMIDC) > 4:

TRCVMIDCVR4 mask control. Specifies the mask value that the trace unit applies to TRCVMIDCVR4. Each bit in this field corresponds to a byte in TRCVMIDCVR4.

COMP4[<m>]	Meaning
0b0	The trace unit includes TRCVMIDCVR4[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison.
0b1	The trace unit ignores TRCVMIDCVR4[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison.

The reset behavior of this field is:

On a Trace unit reset, this field resets to an architecturally UNKNOWN value.

Accessing this field has the following behavior:

When m >= UInt(TRCIDR2.VMIDSIZE), access to this field is RES0.
Otherwise, access to this field is RW.

Otherwise:

Accessing TRCVMIDCCTLR1

If software uses the TRCVMIDCVR<n> registers, where n=4-7, then it must program this register.

If software sets a mask bit to 1 then it must program the relevant byte in TRCVMIDCVR<n> to 0x00.

If any bit is 1 and the relevant byte in TRCVMIDCVR<n> is not 0x00, the behavior of the Virtual Context Identifier Comparator is CONSTRAINED UNPREDICTABLE. In this scenario the comparator might match unexpectedly or might not match.

Writes are CONSTRAINED UNPREDICTABLE if the trace unit is not in the Idle state.

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
COMP7[7]	COMP7[6]	COMP7[5]	COMP7[4]	COMP7[3]	COMP7[2]	COMP7[1]	COMP7[0]	COMP6[7]	COMP6[6]	COMP6[5]	COMP6[4]	COMP6[3]	COMP6[2]	COMP6[1]	COMP6[0]	COMP5[7]	COMP5[6]	COMP5[5]	COMP5[4]	COMP5[3]	COMP5[2]	COMP5[1]	COMP5[0]	COMP4[7]	COMP4[6]	COMP4[5]	COMP4[4]	COMP4[3]	COMP4[2]	COMP4[1]	COMP4[0]

TRCVMIDCCTLR1: Trace Virtual Context Identifier Comparator Control Register 1

Purpose

Configuration

Attributes

Field descriptions

COMP7[<m>], bit [m+24], for m = 7 to 0

When UInt(TRCIDR4.NUMVMIDC) > 7:

Otherwise:

COMP6[<m>], bit [m+16], for m = 7 to 0

When UInt(TRCIDR4.NUMVMIDC) > 6:

Otherwise:

COMP5[<m>], bit [m+8], for m = 7 to 0

When UInt(TRCIDR4.NUMVMIDC) > 5:

Otherwise:

COMP4[<m>], bit [m], for m = 7 to 0

When UInt(TRCIDR4.NUMVMIDC) > 4:

Otherwise:

Accessing TRCVMIDCCTLR1

TRCVMIDCCTLR1 can be accessed through the external debug interface:

TRCVMIDCCTLR1: Trace Virtual Context Identifier Comparator Control Register 1

Purpose

Configuration

Attributes

Field descriptions

COMP7[<m>], bit [m+24], for m = 7 to 0When UInt(TRCIDR4.NUMVMIDC) > 7:

Otherwise:

COMP6[<m>], bit [m+16], for m = 7 to 0When UInt(TRCIDR4.NUMVMIDC) > 6:

Otherwise:

COMP5[<m>], bit [m+8], for m = 7 to 0When UInt(TRCIDR4.NUMVMIDC) > 5:

Otherwise:

COMP4[<m>], bit [m], for m = 7 to 0When UInt(TRCIDR4.NUMVMIDC) > 4:

Otherwise:

Accessing TRCVMIDCCTLR1

TRCVMIDCCTLR1 can be accessed through the external debug interface:

COMP7[<m>], bit [m+24], for m = 7 to 0

When UInt(TRCIDR4.NUMVMIDC) > 7:

COMP6[<m>], bit [m+16], for m = 7 to 0

When UInt(TRCIDR4.NUMVMIDC) > 6:

COMP5[<m>], bit [m+8], for m = 7 to 0

When UInt(TRCIDR4.NUMVMIDC) > 5:

COMP4[<m>], bit [m], for m = 7 to 0

When UInt(TRCIDR4.NUMVMIDC) > 4: