tend.

Transaction End

tend. A

Commits the current hardware transaction. If successful, memory changes become visible atomically.

Encoding

Binary Layout

31

0:5

/

6:10

A

11:15

/

16:20

686

21:30

1

31

 

Format X-form

Opcode 0x7C00055D

Extension Transactional Memory

Operands

• A
  Abort Control

Example

tend. 0

// Commit transaction.

Registers Altered

CR0

Related

More in Transactional Memory

Reference

View in PowerISA v3.1C Specification ↗ OPF Power ISA v3.1C

Description

Transaction End. Ends the current transaction. If A=1 (All), ends all nested transactions. On success the memory updates made in the transaction become visible. On failure a non-transactional abort occurs.

Operation

CommitTransaction()

Programming Note

Use `tend` to end a transaction, making its changes permanent if successful. If an error occurs, it triggers a non-transactional abort. Ensure all nested transactions are properly managed when using the A=1 option.