NM and CM callable (differences noted below).
Enables or disables a user-written system trap handling
procedure.
Parameters |
 |
- plabel
(NM) 32-bit signed integer by value (required)
(CM) 16-bit signed integer by value (required)
Passes the external-type label of the trap handling procedure.
If the value is 0, the trap handler is disabled.
- oldplabel
(NM) 32-bit signed integer by reference (required)
(CM) 16-bit signed integer by reference (required)
Returns the plabel of the process's previous software library
trap handler. If no plabel was previously configured,
0 is returned.
Operation Notes |
|
When a program begins execution, the user-written system trap
handler is disabled automatically.
When enabled by the XSYSTRAP intrinsic, and
subsequently activated by an error,
the user-written system trap handler assumes control.
The trap handler can be enabled or disabled by calling
the XSYSTRAP intrinsic.
Condition Codes |
|
- CCE (2)
Request granted. Trap enabled.
- CCG (0)
Request granted. Trap disabled.
- CCL (1)
Request denied. An illegal plabel was specified.
Related Information |
|
- Intrinsics
None
- Commands
None
- Manuals
Trap Handling Programmer's Guide (32650-90026)
Printable version
