The TRCRSR characteristics are:
Use this to set, or read, the status of the resources.
AArch64 System register TRCRSR bits [31:0] are architecturally mapped to External register TRCRSR[31:0].
This register is present only when FEAT_ETE is implemented. Otherwise, direct accesses to TRCRSR are UNDEFINED.
TRCRSR 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 | |||||||||||||||||||||||||||||||
RES0 | TA | EVENT[3] | EVENT[2] | EVENT[1] | EVENT[0] | RES0 | EXTIN[3] | EXTIN[2] | EXTIN[1] | EXTIN[0] |
Reserved, RES0.
Tracing active.
TA | Meaning |
---|---|
0b0 |
Tracing is not active. |
0b1 |
Tracing is active. |
The reset behaviour of this field is:
Untraced status of ETEEvents.
EVENT[<m>] | Meaning |
---|---|
0b0 |
An ETEEvent <m> has not occurred. |
0b1 |
An ETEEvent <m> has occurred while the resources were in the Paused state. |
This bit is RES0 if TRCIDR4.NUMRSPAIR == 0 || m > TRCIDR0.NUMEVENT.
The reset behaviour of this field is:
Reserved, RES0.
The sticky status of the External Input Selectors.
EXTIN[<m>] | Meaning |
---|---|
0b0 |
An event selected by External Input Selector <m> has not occurred. |
0b1 |
At least one event selected by External Input Selector <m> has occurred while the resources were in the Paused state. |
This bit is RES0 if m >= TRCIDR5.NUMEXTINSEL.
The reset behaviour of this field is:
Must always be programmed.
Writes are CONSTRAINED UNPREDICTABLE if the trace unit is not in the Idle state.
Reads from this register might return an UNKNOWN value if the trace unit is not in either of the Idle or Stable states.
Accesses to this register use the following encodings in the System register encoding space:
op0 | op1 | CRn | CRm | op2 |
---|---|---|---|---|
0b10 | 0b001 | 0b0000 | 0b1010 | 0b000 |
if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if Halted() && HaveEL(EL3) && EDSCR.SDD == '1' && boolean IMPLEMENTATION_DEFINED "EL3 trap priority when SDD == '1'" && 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() && (!HaveEL(EL3) || SCR_EL3.FGTEn == '1') && HDFGRTR_EL2.TRC == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif HaveEL(EL3) && CPTR_EL3.TTA == '1' then if Halted() && EDSCR.SDD == '1' then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else return TRCRSR; elsif PSTATE.EL == EL2 then if Halted() && HaveEL(EL3) && EDSCR.SDD == '1' && boolean IMPLEMENTATION_DEFINED "EL3 trap priority when SDD == '1'" && 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 Halted() && EDSCR.SDD == '1' then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else return TRCRSR; elsif PSTATE.EL == EL3 then if CPTR_EL3.TTA == '1' then AArch64.SystemAccessTrap(EL3, 0x18); else return TRCRSR;
op0 | op1 | CRn | CRm | op2 |
---|---|---|---|---|
0b10 | 0b001 | 0b0000 | 0b1010 | 0b000 |
if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if Halted() && HaveEL(EL3) && EDSCR.SDD == '1' && boolean IMPLEMENTATION_DEFINED "EL3 trap priority when SDD == '1'" && 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() && (!HaveEL(EL3) || SCR_EL3.FGTEn == '1') && HDFGWTR_EL2.TRC == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif HaveEL(EL3) && CPTR_EL3.TTA == '1' then if Halted() && EDSCR.SDD == '1' then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else TRCRSR = X[t]; elsif PSTATE.EL == EL2 then if Halted() && HaveEL(EL3) && EDSCR.SDD == '1' && boolean IMPLEMENTATION_DEFINED "EL3 trap priority when SDD == '1'" && 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 Halted() && EDSCR.SDD == '1' then UNDEFINED; else AArch64.SystemAccessTrap(EL3, 0x18); else TRCRSR = X[t]; elsif PSTATE.EL == EL3 then if CPTR_EL3.TTA == '1' then AArch64.SystemAccessTrap(EL3, 0x18); else TRCRSR = X[t];
30/06/2021 09:39; 4f5dd962f4e34e1ac282f76da4d6e7fc4cab087e
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