sub

Subtract (Extended Register)

SUB <Wd|Wsp>, <Wn|Wsp>, <Wm> {, <extend> {#<amount>}}

Subtracts extended register from register.

Details

The Subtract instruction subtracts extended register from register.

Pseudocode Operation

Wd ← Wn - Wm
// Flags affected: N, Z, C, V

Example

SUB Wd, Wn, w2

Encoding

Binary Layout
01001011
001
Wm
option
imm3
Wn
Wd
 
Format Data Processing
Opcode 0x4B200000
Extension Base

Operands

  • Wd
    Destination 32-bit integer register
  • Wn
    First source / base 32-bit integer register
  • Wm
    Second source / offset 32-bit integer register