sev

Send Event (Thumb)

SEV

Send event (Thumb).

Pseudocode Operation

EventRegister ← 1
WakeupInnerShareableDomain()

Encoding

Binary Layout

10111111

15:8

0100

7:4

0000

3:0

Format Thumb System

Opcode 0xBF40

Extension T32 (Base)

Operands

Other forms of sev

sev Send Event
sev Send Event (A32)

Reference

View in Arm A64 ISA Reference ↗ Arm AArch32 ISA

Instruction Forms

Encoding	Instruction	ISA	Bit pattern
0x0320F004	SEV{<c>}{<q>}	A32	cond \| 00110 \| 0 \| 10 \| 00 \| 00 \| 1 \| 1 \| 1 \| 1 \| 000000000100
0xBF40	SEV{<c>}{<q>}	T32	10111111 \| 0100 \| 0000
0xF3AF8004	SEV{<c>}.W	T32	111100111010 \| 1 \| 1 \| 1 \| 1 \| 10 \| 0 \| 0 \| 0 \| 000 \| 0000 \| 0100

Description

Send Event is a hint instruction. It causes an event to be signaled to all PEs in the multiprocessor system. For more information, see Wait For Event and Send Event.

Operation

if ConditionPassed() then
    EncodingSpecificOperations();
    SendEvent();

sev