ERRIDR, Error Record ID Register
The ERRIDR characteristics are:
Purpose
Defines the highest numbered index of the error records that can be accessed through the Error Record System registers.
Configuration
AArch32 System register ERRIDR bits [31:0] are architecturally mapped to AArch64 System register ERRIDR_EL1[31:0] .
This register is present only when RAS is implemented. Otherwise, direct accesses to ERRIDR are UNDEFINED.
Attributes
ERRIDR is a 32-bit register.
Field descriptions
The ERRIDR bit assignments are:
Bits [31:16]
Reserved, RES0.
NUM, bits [15:0]
Highest numbered index of the records that can be accessed through the Error Record System registers plus one. Zero indicates that no records can be accessed through the Error Record System registers.
Each implemented record is owned by a node. A node might own multiple records.
Accessing the ERRIDR
Accesses to this register use the following encodings:
MRC{<c>}{<q>} <coproc>, {#}<opc1>, <Rt>, <CRn>, <CRm>{, {#}<opc2>}
| coproc | opc1 | CRn | CRm | opc2 |
|---|---|---|---|---|
| 0b1111 | 0b000 | 0b0101 | 0b0011 | 0b000 |
if PSTATE.EL == EL0 then
UNDEFINED;
elsif PSTATE.EL == EL1 then
if EL2Enabled() && !ELUsingAArch32(EL2) && HSTR_EL2.T5 == '1' then
AArch64.AArch32SystemAccessTrap(EL2, 0x03);
elsif EL2Enabled() && ELUsingAArch32(EL2) && HSTR.T5 == '1' then
AArch32.TakeHypTrapException(0x03);
elsif EL2Enabled() && !ELUsingAArch32(EL2) && HCR_EL2.TERR == '1' then
AArch64.AArch32SystemAccessTrap(EL2, 0x03);
elsif EL2Enabled() && ELUsingAArch32(EL2) && HCR2.TERR == '1' then
AArch32.TakeHypTrapException(0x03);
elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && SCR_EL3.TERR == '1' then
AArch64.AArch32SystemAccessTrap(EL3, 0x03);
elsif HaveEL(EL3) && ELUsingAArch32(EL3) && PSTATE.M != M32_Monitor && SCR.TERR == '1' then
AArch32.TakeMonitorTrapException();
else
return ERRIDR;
elsif PSTATE.EL == EL2 then
if HaveEL(EL3) && !ELUsingAArch32(EL3) && SCR_EL3.TERR == '1' then
AArch64.AArch32SystemAccessTrap(EL3, 0x03);
elsif HaveEL(EL3) && ELUsingAArch32(EL3) && SCR.TERR == '1' then
AArch32.TakeMonitorTrapException();
else
return ERRIDR;
elsif PSTATE.EL == EL3 then
if PSTATE.M != M32_Monitor && SCR.TERR == '1' then
AArch32.TakeMonitorTrapException();
else
return ERRIDR;