tabortwci

Transaction Abort Word Conditional Immediate

tabortwci TO, RA, SI

Aborts transaction if word condition (Immediate) is met.

Encoding

Binary Layout

31

0:5

TO

6:10

RA

11:15

SI

16:20

782

21:30

1

31

 

Format X-form

Opcode 0x7C00061D

Extension Transactional Memory

Operands

• TO
  Options
• RA
  Src
• SI
  Immediate

Example

tabortwci 4, r4, 16

Registers Altered

CR, MSR

Related

More in Transactional Memory

Reference

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

Description

Transaction Abort Word Conditional Immediate. Aborts the current transaction if the condition formed by TO and the comparison of RA with the sign-extended immediate SI is true.

Operation

if Transactional() then
  if TO_condition(TO, RA, EXTS(SI)) then
    Abort_Transaction(cause=Explicit)

Programming Note

Use tabortwci to conditionally abort a transaction based on the comparison of a register with an immediate value. Ensure that the transactional state is active; otherwise, the instruction has no effect. Be cautious with the TO condition and immediate sign extension to avoid unintended aborts.