OS_Exit (changes)
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OS SWI Calls
» OS_Exit
OS_Exit
(SWI &11)
| Entry | |
|---|---|
| R0 | Pointer to error block |
| R1 | “ABEX ” (&58454241) If Return code and error block provided |
| R2 | Return code |
| Exit | |
|---|---|
| Never returns | |
Use
The purpose of this call is to pass control over to the most recent exit handler.
Notes
If R1 <> “ABEX”, or R0 does not appear to be a valid error pointer, then Sys$ReturnCode is set to 0.
If R1 = “ABEX”, and 0 <= R2 <= Sys$RCLimit, then Sys$ReturnCode is set to R2.
If R1 = “ABEX” and R2 is outside this range, then Sys$ReturnCode is still set to R2, and the error pointer given in R0 is passed to OS_GenerateError. This has the effect of causing the Error Handler to be invoked, rather than the exit handler.
See also
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