Nop; Sev - ST STM32F0 Series Programming Manual

The STM32 Cortex-M0 instruction set
3.7.8

NOP

No operation.
Syntax
NOP
Operation
NOP does nothing. NOP is not necessarily a time-consuming NOP. The processor might
remove it from the pipeline before it reaches the execution stage.
Use NOP for padding, for example to place the following instruction on a 64-bit boundary.
Restrictions
None
Condition flags
This instruction does not change the flags.
Examples
NOP ; No operation
3.7.9

SEV

Send event.
Syntax
SEV
Operation
SEV is a hint instruction that causes an event to be signaled to all processors within a
multiprocessor system. It also sets the local event register to 1, see
page 28
Restrictions
None
Condition flags
This instruction does not change the flags.
Examples
SEV ; Send Event
66/91
and WFE on page 67.
Doc ID 022979 Rev 1
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