sevl

Send Event Local (Thumb)

SEVL

Send local event (Thumb).

Pseudocode Operation

EventRegister[PE].LocalEvent ← 1

Encoding

Binary Layout

10111111

15:8

0101

7:4

0000

3:0

 

Format Thumb System

Opcode 0xBF50

Extension T32 (Base)

Operands

Related

Other forms of sevl

• sevl Send Event Local
• sevl Send Event Local (A32)

More in T32 (Base)

Reference

View in Arm A64 ISA Reference ↗ Arm AArch32 ISA

Instruction Forms

Encoding	Instruction		ISA		Bit pattern
0x0320F005	SEVL{<c>}{<q>}		A32		cond | 00110 | 0 | 10 | 00 | 00 | 1 | 1 | 1 | 1 | 000000000101
0xBF50	SEVL{<c>}{<q>}		T32		10111111 | 0101 | 0000
0xF3AF8005	SEVL{<c>}.W		T32		111100111010 | 1 | 1 | 1 | 1 | 10 | 0 | 0 | 0 | 000 | 0000 | 0101

Description

Send Event Local is a hint instruction that causes an event to be signaled locally without requiring the event to be signaled to other PEs in the multiprocessor system. It can prime a wait-loop which starts with a WFE instruction.

Operation

if ConditionPassed() then
    EncodingSpecificOperations();
    SendEventLocal();