subs

Subtract and Set Flags (Extended)

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

Subtracts extended register and updates flags.

Details

The Subtract and Set Flags instruction subtracts extended register and updates flags.

Pseudocode Operation

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

Example

SUBS w0, Wn, w2

Encoding

Binary Layout
01101011
001
Wm
option
imm3
Wn
Wd
 
Format Data Processing
Opcode 0x6B200000
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