maclhwu

Multiply Accumulate Low Halfword Unsigned

maclhwu RT, RA, RB

Unsigned Multiply Accumulate Low Halfword.

Details

Multiplies the low halfword (bits 16–31) of RA by the low halfword of RB as unsigned integers, then adds the 32-bit product to RT and stores the result in RT. This is part of the Embedded (SPE) category and does not affect any condition or status registers.

Pseudocode Operation

product ← EXTZ(RA[16:31]) × EXTZ(RB[16:31])
RT ← RT + product

Example

maclhwu r3, r4, r5

Encoding

Binary Layout
4
0
RT
6
RA
11
RB
16
396
21
0
31
 
Format XO-form
Opcode 0x10000318
Extension Embedded

Operands

  • RT
    Acc/Dest
  • RA
    Src A
  • RB
    Src B