lwdi

Load Word with Decoration Indexed

lwdi RT, RA, RB

Loads a word and sends decoration sideband signals to the bus.

Encoding

Binary Layout

31

0:5

RT

6:10

RA

11:15

RB

16:20

788

21:30

/

31

 

Format X-form

Opcode 0x7C000628

Extension Embedded

Operands

• RT
  Target
• RA
  Base
• RB
  Index

Example

lwdi r3, r4, r5

Related

More in Embedded

Reference

View in PowerISA v3.1C Specification ↗ OPF Power ISA v3.1C

Description

Loads a 32-bit word from memory at an address computed from two general-purpose registers and transmits sideband decoration signals. This is an embedded category instruction used in specialized memory systems with no condition register or status updates.

Operation

EA ← RA + RB
RT ← [EA][32:63]
Send decoration signals on memory bus