sev

Send Event (A32)

SEV

Sends an event to all processors.

Pseudocode Operation

Send event signal to all processors

Encoding

Binary Layout

cond

31:28

00110

27:23

0

22

10

21:20

00

19:18

00

17:16

1

15

1

14

1

13

1

12

000000000100

11:0

 

Format System Hint

Opcode 0x0320F004

Extension A32 (Base)

Operands

Related

Other forms of sev

• sev Send Event
• sev Send Event (Thumb)

More in A32 (Base)

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();