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OS_SetCallBack
Programmer's Reference Manuals
» Part 15 – SWI Calls
» OS
» OS_SetCallBack
OS_SetCallBack
(SWI &1B)
| Entry | |
|---|---|
| - | - |
| Exit | |
|---|---|
| - | - |
Use
The purpose of this call is to cause a call to the CallBack handler.
Notes
This sets the CallBack flag and so causes entry to the CallBack handler? when the system next exits to user mode code with interrupts enabled (apart, of course, from the exit from this SWI).
This SWI may be used if the code linked into the system (via vector or as a SWI handler, etc) is required to do things on exit from the system. The callback handler is set with OS_ChangeEnvironment, and is distinct from transient CallBacks set with OS_AddCallBack.
See also
- CallBack Handler?
- OS_AddCallBack
- OS_ChangeEnvironment