ERRSELR_EL1, Error Record Select Register

The ERRSELR_EL1 characteristics are:

Purpose

Selects an error record to be accessed through the Error Record System registers.

Configuration

AArch64 System register ERRSELR_EL1 bits [31:0] are architecturally mapped to AArch32 System register ERRSELR[31:0] .

This register is present only when RAS is implemented. Otherwise, direct accesses to ERRSELR_EL1 are UNDEFINED.

If ERRIDR_EL1 indicates that zero records are implemented, then it is IMPLEMENTATION DEFINED whether ERRSELR_EL1 is UNDEFINED or RES0.

RW fields in this register reset to architecturally UNKNOWN values.

Attributes

ERRSELR_EL1 is a 64-bit register.

Field descriptions

The ERRSELR_EL1 bit assignments are:

6362616059585756555453525150494847464544434241403938373635343332
RES0
RES0SEL
313029282726252423222120191817161514131211109876543210

Bits [63:16]

Reserved, RES0.

SEL, bits [15:0]

Selects the record accessed through the ERX registers.

For example, if ERRSELR_EL1.SEL is set to 0x4, then direct reads and writes of ERXSTATUS_EL1 access ERR4STATUS.

If ERRSELR_EL1.SEL is set to a value greater than or equal to ERRIDR_EL1.NUM, then all of the following apply:

This field resets to an architecturally UNKNOWN value.

Accessing the ERRSELR_EL1

Accesses to this register use the following encodings:

MRS <Xt>, ERRSELR_EL1

op0op1CRnCRmop2
0b110b0000b01010b00110b001

if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if EL2Enabled() && !ELUsingAArch32(EL2) && HCR_EL2.TERR == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && SCR_EL3.TERR == '1' then AArch64.SystemAccessTrap(EL3, 0x18); else return ERRSELR_EL1; elsif PSTATE.EL == EL2 then if HaveEL(EL3) && !ELUsingAArch32(EL3) && SCR_EL3.TERR == '1' then AArch64.SystemAccessTrap(EL3, 0x18); else return ERRSELR_EL1; elsif PSTATE.EL == EL3 then return ERRSELR_EL1;

MSR ERRSELR_EL1, <Xt>

op0op1CRnCRmop2
0b110b0000b01010b00110b001

if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then if EL2Enabled() && !ELUsingAArch32(EL2) && HCR_EL2.TERR == '1' then AArch64.SystemAccessTrap(EL2, 0x18); elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && SCR_EL3.TERR == '1' then AArch64.SystemAccessTrap(EL3, 0x18); else ERRSELR_EL1 = X[t]; elsif PSTATE.EL == EL2 then if HaveEL(EL3) && !ELUsingAArch32(EL3) && SCR_EL3.TERR == '1' then AArch64.SystemAccessTrap(EL3, 0x18); else ERRSELR_EL1 = X[t]; elsif PSTATE.EL == EL3 then ERRSELR_EL1 = X[t];




27/03/2019 21:59; e5e4db499bf9867a4b93324c4dbac985d3da9376

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