Virtual Context Identifier Comparator mask values for the TRCVMIDCVR<n> registers, where n=0-3.
AArch64 System register TRCVMIDCCTLR0 bits [31:0] are architecturally mapped to External register TRCVMIDCCTLR0[31:0].
This register is present only when FEAT_ETE is implemented, System register access to the trace unit registers is implemented, UInt(TRCIDR4.NUMVMIDC) > 0x0 and UInt(TRCIDR2.VMIDSIZE) > 0. Otherwise, direct accesses to TRCVMIDCCTLR0 are UNDEFINED.
TRCVMIDCCTLR0 is a 64-bit register.
| 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 |
| 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 | |||||||||||||||||||||||||||||||
| COMP3[7] | COMP3[6] | COMP3[5] | COMP3[4] | COMP3[3] | COMP3[2] | COMP3[1] | COMP3[0] | COMP2[7] | COMP2[6] | COMP2[5] | COMP2[4] | COMP2[3] | COMP2[2] | COMP2[1] | COMP2[0] | COMP1[7] | COMP1[6] | COMP1[5] | COMP1[4] | COMP1[3] | COMP1[2] | COMP1[1] | COMP1[0] | COMP0[7] | COMP0[6] | COMP0[5] | COMP0[4] | COMP0[3] | COMP0[2] | COMP0[1] | COMP0[0] |
Reserved, RES0.
TRCVMIDCVR3 mask control. Specifies the mask value that the trace unit applies to TRCVMIDCVR3. Each bit in this field corresponds to a byte in TRCVMIDCVR3.
| COMP3[<m>] | Meaning |
|---|---|
| 0b0 |
The trace unit includes TRCVMIDCVR3[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison. |
| 0b1 |
The trace unit ignores TRCVMIDCVR3[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison. |
The reset behavior of this field is:
Accessing this field has the following behavior:
Reserved, RES0.
TRCVMIDCVR2 mask control. Specifies the mask value that the trace unit applies to TRCVMIDCVR2. Each bit in this field corresponds to a byte in TRCVMIDCVR2.
| COMP2[<m>] | Meaning |
|---|---|
| 0b0 |
The trace unit includes TRCVMIDCVR2[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison. |
| 0b1 |
The trace unit ignores TRCVMIDCVR2[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison. |
The reset behavior of this field is:
Accessing this field has the following behavior:
Reserved, RES0.
TRCVMIDCVR1 mask control. Specifies the mask value that the trace unit applies to TRCVMIDCVR1. Each bit in this field corresponds to a byte in TRCVMIDCVR1.
| COMP1[<m>] | Meaning |
|---|---|
| 0b0 |
The trace unit includes TRCVMIDCVR1[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison. |
| 0b1 |
The trace unit ignores TRCVMIDCVR1[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison. |
The reset behavior of this field is:
Accessing this field has the following behavior:
Reserved, RES0.
TRCVMIDCVR0 mask control. Specifies the mask value that the trace unit applies to TRCVMIDCVR0. Each bit in this field corresponds to a byte in TRCVMIDCVR0.
| COMP0[<m>] | Meaning |
|---|---|
| 0b0 |
The trace unit includes TRCVMIDCVR0[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison. |
| 0b1 |
The trace unit ignores TRCVMIDCVR0[(m×8+7):(m×8)] when it performs the Virtual context identifier comparison. |
The reset behavior of this field is:
Accessing this field has the following behavior:
Reserved, RES0.
If software uses the TRCVMIDCVR<n> registers, where n=0-3, 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.
Accesses to this register use the following encodings in the System register encoding space:
MRS <Xt>, TRCVMIDCCTLR0
| op0 | op1 | CRn | CRm | op2 |
|---|---|---|---|---|
| 0b10 | 0b001 | 0b0011 | 0b0010 | 0b010 |
if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if HaveEL(EL3) && EL3SDDUndefPriority() && CPTR_EL3.TTA == '1' then UNDEFINED; elsif CPACR_EL1.TTA == '1' then AArch64.SystemAccessTrap(EL1, 0x18); elsif EL2Enabled() && CPTR_EL2.TTA == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif EL2Enabled() && IsFeatureImplemented(FEAT_FGT) && (!HaveEL(EL3) || SCR_EL3.FGTEn == '1') && HDFGRTR_EL2.TRC == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif HaveEL(EL3) && CPTR_EL3.TTA == '1' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); elsif IsFeatureImplemented(FEAT_TRBE_EXT) && OSLSR_EL1.OSLK == '0' && HaltingAllowed() && EDSCR2.TTA == '1' then Halt(DebugHalt_SoftwareAccess); else X[t, 64] = TRCVMIDCCTLR0; elsif PSTATE.EL == EL2 then if HaveEL(EL3) && EL3SDDUndefPriority() && CPTR_EL3.TTA == '1' then UNDEFINED; elsif CPTR_EL2.TTA == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif HaveEL(EL3) && CPTR_EL3.TTA == '1' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); elsif !ELUsingAArch32(EL1) && IsFeatureImplemented(FEAT_TRBE_EXT) && OSLSR_EL1.OSLK == '0' && HaltingAllowed() && EDSCR2.TTA == '1' then Halt(DebugHalt_SoftwareAccess); else X[t, 64] = TRCVMIDCCTLR0; elsif PSTATE.EL == EL3 then if CPTR_EL3.TTA == '1' then AArch64.SystemAccessTrap(EL3, 0x18); elsif !ELUsingAArch32(EL1) && IsFeatureImplemented(FEAT_TRBE_EXT) && OSLSR_EL1.OSLK == '0' && HaltingAllowed() && EDSCR2.TTA == '1' then Halt(DebugHalt_SoftwareAccess); else X[t, 64] = TRCVMIDCCTLR0;
MSR TRCVMIDCCTLR0, <Xt>
| op0 | op1 | CRn | CRm | op2 |
|---|---|---|---|---|
| 0b10 | 0b001 | 0b0011 | 0b0010 | 0b010 |
if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if HaveEL(EL3) && EL3SDDUndefPriority() && CPTR_EL3.TTA == '1' then UNDEFINED; elsif CPACR_EL1.TTA == '1' then AArch64.SystemAccessTrap(EL1, 0x18); elsif EL2Enabled() && CPTR_EL2.TTA == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif EL2Enabled() && IsFeatureImplemented(FEAT_FGT) && (!HaveEL(EL3) || SCR_EL3.FGTEn == '1') && HDFGWTR_EL2.TRC == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif HaveEL(EL3) && CPTR_EL3.TTA == '1' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); elsif IsFeatureImplemented(FEAT_TRBE_EXT) && OSLSR_EL1.OSLK == '0' && HaltingAllowed() && EDSCR2.TTA == '1' then Halt(DebugHalt_SoftwareAccess); else TRCVMIDCCTLR0 = X[t, 64]; elsif PSTATE.EL == EL2 then if HaveEL(EL3) && EL3SDDUndefPriority() && CPTR_EL3.TTA == '1' then UNDEFINED; elsif CPTR_EL2.TTA == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif HaveEL(EL3) && CPTR_EL3.TTA == '1' then if EL3SDDUndef() then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); elsif !ELUsingAArch32(EL1) && IsFeatureImplemented(FEAT_TRBE_EXT) && OSLSR_EL1.OSLK == '0' && HaltingAllowed() && EDSCR2.TTA == '1' then Halt(DebugHalt_SoftwareAccess); else TRCVMIDCCTLR0 = X[t, 64]; elsif PSTATE.EL == EL3 then if CPTR_EL3.TTA == '1' then AArch64.SystemAccessTrap(EL3, 0x18); elsif !ELUsingAArch32(EL1) && IsFeatureImplemented(FEAT_TRBE_EXT) && OSLSR_EL1.OSLK == '0' && HaltingAllowed() && EDSCR2.TTA == '1' then Halt(DebugHalt_SoftwareAccess); else TRCVMIDCCTLR0 = X[t, 64];