B1.16 c13 registers

The processor can access different 32-bit wide system registers. Registers where CRn has the value thirteen are called c13 registers.

The following table shows the 32-bit wide system registers you can access when the processor is in AArch32 state and the value of CRn is c13.

For information on all registers but FCSE Process ID, see the ARM® Architecture Reference Manual ARMv8, for ARMv8-A architecture profile.

Table B1-15 c13 register summary

Op1 CRm Op2 Name Reset Description
0 c0 0 FCSEIDR 0x00000000

B1.53 FCSE Process ID Register

1 CONTEXTIDR UNK

Context ID Register

2 TPIDRURW UNK

User Read/Write Thread ID Register

3 TPIDRURO UNK

User Read-Only Thread ID Register

4 TPIDRPRW UNK

EL1 only Thread ID Register

4 c0 2 HTPIDR UNK

Hyp Software Thread ID Register

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