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HPSWTONMPLABEL
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)