lwzepx

Load Word and Zero External Process ID Indexed

lwzepx RT, RA, RB

Loads a word using the External PID.

Details

Loads a word (32-bit value) from memory using an address formed by adding RA and RB, performing the load using the External PID for address translation in embedded environments. The loaded word is zero-extended and placed into RT. No condition flags are affected.

Pseudocode Operation

EA ← (RA) + (RB)
RT ← (32 bits are 0) || ([EA + 0:3])

Example

lwzepx r3, r4, r5

Encoding

Binary Layout
31
0
RT
6
RA
11
RB
16
63
21
/
31
 
Format X-form
Opcode 0x7C00007E
Extension Embedded

Operands

  • RT
    Target
  • RA
    Base
  • RB
    Index