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CM callable only. Allows CM user programs, user libraries, and system code to
invoke NM procedures as follows: Convert CM references in the argument list to virtual NM addresses. Change the execution mode. Invoke the NM procedure specified by the CM caller.
Syntax | |
U32V I16V I16 I16
status:=HPSWTONMPLABEL(proc,nparms,arglist,argdesc,
I16V
functype);
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Functional Return | |
- status
I32 (assigned functional return) Returns a 32-bit integer indicating the status of the call.
Parameters | |
- proc
32-bit unsigned integer by value (required) Passes the NM plabel of the target procedure name. This plabel is
usually obtained by calling the HPLOADNMPROC intrinsic.
- nparms
16-bit signed integer by value (required) Passes the number of parameters to be passed to the target NM
procedure. It specifies the length of argdesc.
Account for any hidden parameters (such as, parameters,
an extensible parameter list, and so forth). For more information
on hidden parameters, refer to the Hewlett-Packard Pascal/XL Reference
Manual (31502-90002).
- arglist
16-bit signed integer array by reference (required) Passes the actual parameters to be passed to the NM procedure.
- argdesc
16-bit signed integer array by reference (required) Passes integer codes describing the parameters held in
the arglist array (that is, byte, word, double, pointer, and
so forth).
- functype
16-bit signed integer by value (required) Passes the data type of the value the target procedure returns if it
is a function. If the target is not a function, the value of this
parameter is zero. Refer to the Switch Programming Guide (32650-90014) for supported function types.
Operation Notes | |
Do not use HPSWTONMPLABEL to invoke a native mode (NM) system
supplied intrinsic. The result of the call may
be unpredictable. NM code can address the entire CM stack, so there is no
copying of reference parameters. The length of each parameter is
not required because lengths are implied in the descriptor list. Related Information | |
- Intrinsics
None - Commands
None - Manuals
Switch Programming Guide (32650-90014)
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