dccci

Data Cache Congruence Class Invalidate

dccci RA, RB

Invalidates a congruence class in the data cache (Embedded).

Details

Invalidates a congruence class in the data cache at the address formed by RA + RB. This is an embedded cache-management instruction with no guaranteed semantics on all implementations; behavior is implementation-dependent and may require supervisor privilege. The instruction has no effect on data in higher-level caches or main memory.

Pseudocode Operation

addr ← (RA) + (RB)
Invalidate data cache congruence class at addr

Example

dccci r4, r5

Encoding

Binary Layout
31
0
/
6
RA
11
RB
16
454
21
/
31
 
Format X-form
Opcode 0x7C00038E
Extension Embedded

Operands

  • RA
    Base
  • RB
    Index