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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

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

This register is present only when ETE is implemented and TRCIDR4.NUMACPAIRS > 0b0000. Otherwise, direct accesses to TRCVIIECTLR are UNDEFINED.

Attributes

TRCVIIECTLR is a 64-bit register.

Field descriptions

The TRCVIIECTLR bit assignments are:

63	62	61	60	59	58	57	56	55	54	53	52	51	50	49	48	47	46	45	44	43	42	41	40	39	38	37	36	35	34	33	32
RES0
RES0								EXCLUDE<m>, bit [m+16]								RES0								INCLUDE<m>, bit [m]
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

Bits [63:24]

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.

Accesses to this register use the following encodings:

MRS <Xt>, TRCVIIECTLR

op0	op1	CRn	CRm	op2
0b10	0b001	0b0000	0b0001	0b010

if PSTATE.EL == EL0 then
    UNDEFINED;
elsif PSTATE.EL == EL1 then
    if CPACR_EL1.TTA == '1' then
        AArch64.SystemAccessTrap(EL1, 0x18);
    elsif EL2Enabled() && !ELUsingAArch32(EL2) && CPTR_EL2.TTA == '1' then
        AArch64.SystemAccessTrap(EL2, 0x18);
    elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && CPTR_EL3.TTA == '1' then
        AArch64.SystemAccessTrap(EL3, 0x18);
    else
        return TRCVIIECTLR;
elsif PSTATE.EL == EL2 then
    if CPTR_EL2.TTA == '1' then
        AArch64.SystemAccessTrap(EL2, 0x18);
    elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && CPTR_EL3.TTA == '1' then
        AArch64.SystemAccessTrap(EL3, 0x18);
    else
        return TRCVIIECTLR;
elsif PSTATE.EL == EL3 then
    if CPTR_EL3.TTA == '1' then
        AArch64.SystemAccessTrap(EL3, 0x18);
    else
        return TRCVIIECTLR;

MSR TRCVIIECTLR, <Xt>

op0	op1	CRn	CRm	op2
0b10	0b001	0b0000	0b0001	0b010

if PSTATE.EL == EL0 then
    UNDEFINED;
elsif PSTATE.EL == EL1 then
    if CPACR_EL1.TTA == '1' then
        AArch64.SystemAccessTrap(EL1, 0x18);
    elsif EL2Enabled() && !ELUsingAArch32(EL2) && CPTR_EL2.TTA == '1' then
        AArch64.SystemAccessTrap(EL2, 0x18);
    elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && CPTR_EL3.TTA == '1' then
        AArch64.SystemAccessTrap(EL3, 0x18);
    else
        TRCVIIECTLR = X[t];
elsif PSTATE.EL == EL2 then
    if CPTR_EL2.TTA == '1' then
        AArch64.SystemAccessTrap(EL2, 0x18);
    elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && CPTR_EL3.TTA == '1' then
        AArch64.SystemAccessTrap(EL3, 0x18);
    else
        TRCVIIECTLR = X[t];
elsif PSTATE.EL == EL3 then
    if CPTR_EL3.TTA == '1' then
        AArch64.SystemAccessTrap(EL3, 0x18);
    else
        TRCVIIECTLR = X[t];

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