Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet

193

SAM4S Series [DATASHEET]

Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14

Send Event.
Syntax

SEV{cond}

where:
condis an optional condition code, see 

.

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 

.

Condition Flags
This instruction does not change the flags.
Examples

SEV ; Send Event 

Supervisor Call.
Syntax

SVC{cond} #imm

where:
condis an optional condition code, see 

.

immis an expression evaluating to an integer in the range 0-255 (8-bit value).
Operation
The SVC instruction causes the SVC exception.
imm

 is ignored by the processor. If required, it can be retrieved by the exception handler to determine what service 

is being requested.
Condition Flags
This instruction does not change the flags.
Examples

SVC

0x32

; Supervisor Call (SVC handler can extract the immediate value

; by locating it via the stacked PC)