The following lists the service calls provided by the RI78V4 as the system state management functions.

Table 12-16 System State Management Functions

Service Call	Function	Origin of Service Call
rot_rdq	Rotate task precedence.	Task, Non-task
irot_rdq	Rotate task precedence.	Task, Non-task
get_tid	Reference task ID in the RUNNING state.	Task, Non-task
iget_tid	Reference task ID in the RUNNING state.	Task, Non-task
loc_cpu	Lock the CPU.	Task, Non-task
iloc_cpu	Lock the CPU.	Task, Non-task
unl_cpu	Unlock the CPU.	Task, Non-task
iunl_cpu	Unlock the CPU.	Task, Non-task
dis_dsp	Disable dispatching.	Task
ena_dsp	Enable dispatching.	Task
sns_ctx	Reference contexts.	Task, Non-task
sns_loc	Reference CPU state.	Task, Non-task
sns_dsp	Reference dispatching state.	Task, Non-task
sns_dpn	Reference dispatch pending state.	Task, Non-task