4.2.25. Miscellaneous operations

Table 4.23 shows the miscellaneous operations.

Table 4.23. Miscellaneous system control operations

NameCRnOp1CRmOp2ResetDescription
NOPc70c04UNK

System control No Operation (NOP), see the ARM Architecture Reference Manual

CP15ISB  c54UNK

Instruction Synchronization Barrier operation, see the ARM Architecture Reference Manual

CP15DSB  c104UNK

Data Synchronization Barrier operation, see the ARM Architecture Reference Manual

CP15DMB   5UNK

Data Memory Barrier operation, see the ARM Architecture Reference Manual

NOP  c131UNK

System control No Operation (NOP), see the ARM Architecture Reference Manual

TPIDRURWc130c02UNK

User Read/Write Thread ID Register, see the ARM Architecture Reference Manual

TPIDRURO   3UNK

User Read-Only Thread ID Register, see the ARM Architecture Reference Manual

TPIDRPRW   4UNK

PL1 only Thread ID Register, see the ARM Architecture Reference Manual

HTPIDR 4c02UNK

Hyp Software Thread ID Register, see the ARM Architecture Reference Manual


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