smlabt

Signed Multiply Accumulate (Bottom x Top)

SMLABT<c> <Rd>, <Rn>, <Rm>, <Ra>

Accumulates (Rn.B * Rm.T) into Ra.

Details

The Signed Multiply Accumulate instruction accumulates (Rn.B * Rm.T) into Ra.

Pseudocode Operation

// Accumulates (Rn.B * Rm.T) into Ra

Example

SMLABT r0, r1, r2, r5

Encoding

Binary Layout
cond
00010000
Rd
Ra
Rm
1100
Rn
 
Format Multiply
Opcode 0x010000C0
Extension A32 (DSP)

Operands

  • Rd
    Destination general-purpose register
  • Rn
    First source / base general-purpose register
  • Rm
    Second source / offset general-purpose register
  • Ra
    Acc