TABLE OF CONTENTS Most of the 16-bit Thumb instructions are available in architecture v4T (ARM7TDMI). However, a number of them are added in architecture v5, v6, and v7. Table B.1 lists these instructions.
| Instruction | v4T | v5 | v6 | Cortex-M3 (v7-M) |
|---|---|---|---|---|
| BKPT | N | Y | Y | Y |
| BLX | N | Y | Y | BLX |
| CBZ, CBNZ | N | N | N | Y |
| CPS | N | N | Y | CPSIE , CPSID |
| CPY | N | N | Y | Y |
| NOP | N | N | N | Y |
| IT | N | N | N | Y |
| REV (various forms) | N | N | Y | REV, REV16, REVSH |
| SEV | N | N | N | Y |
| SETEND | N | N | Y | N |
| SWI | Y | Y | Y | Changed to SVC |
| SXTB, SXTH | N | N | Y | Y |
| UXTB, UXTH | N | N | Y | Y |
| WFE, WFI | N | N | N | Y |
