Application Program Status Register
| M | Thumb execution state bit 16 (User): User mode 17 (FIQ): FIQ mode 18 (IRQ): IRQ mode 19 (Supervisor): Supervisor mode 23 (Abort): Abort mode 27 (Undefined): Undefined mode 31 (System): System mode |
| F | FIQ mask bit |
| I | IRQ mask bit |
| A | Asynchronous abort mask bit |
| E | Endianness bit |
| GE | Greater than or equal flags |
| PAN | Privileged access never |
| Q | Sticky overflow condition flag |
| V | Overflow condition flag |
| C | Carry condition flag |
| Z | Zero condition flag |
| N | Negative condition flag |