SEV
Send Event
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.
For more information about the CONSTRAINED UNPREDICTABLE behavior of this instruction, see Architectural Constraints on UNPREDICTABLE behaviors.
It has encodings from the following instruction sets:
A32 (
A1
)
and
T32 (
T1
and
T2
)
.
!= 1111
0
0
1
1
0
0
1
0
0
0
0
0
(1)
(1)
(1)
(1)
(0)
(0)
(0)
(0)
0
0
0
0
0
1
0
0
SEV{<c>}{<q>}
// No additional decoding required
1
0
1
1
1
1
1
1
0
1
0
0
0
0
0
0
SEV{<c>}{<q>}
// No additional decoding required
1
1
1
1
0
0
1
1
1
0
1
0
(1)
(1)
(1)
(1)
1
0
(0)
0
(0)
0
0
0
0
0
0
0
0
1
0
0
SEV{<c>}.W
// No additional decoding required
<c>
See Standard assembler syntax fields.
<q>
See Standard assembler syntax fields.
if ConditionPassed() then
EncodingSpecificOperations();
SendEvent();
end;
2026-03-12 12:23:09
2025-09_rel_asl1