Calling simAPI function from a UCB based on sa_user.c template

I am importing external C code using the ucb block to be used both under sysbld autocode. Therefore, I am using "sa_user.c" template for the UCB.
The basic functionality works fine under both sysbld and autocode simulation.
I would like to use SIM API functions from the ucb code while running under sysbld. I can protect the sim API function from being called when running with autocode using "#ifdef SBUSER".
However, the problem is that simAPI function to gather information on the current UCB requires, as input, a pointer to the iinfo structure:
    SIMAPI_GetUCBBlockInfo(int *iinfo, SB **SBptr, BLK **BLKptr)
The function prototype for main ucb function for this template:
void USR01(INFO,T,U,NU,X,XDOT,NX,Y,NY,RP,IP)
     struct STATUS_RECORD       *INFO   ;
     RT_DURATION    T       ;
does not provide access to the iinfo strcutre (which is usaualy passed as an input argument to the ucb functions based on sybld usr01.c template).
Is there a way to get around that?
I would try to create an integer array and set the content. However, I do not have any information about what should be the size and values of this array.
Thanks
Farshid

Thanks Chris,
I can understand your point about the purpose of the "sa_user" style ucb in providing minimum features that are common and supported by both Autocode and sysbld. This makes sense about features that affect the result of simulation such as linearization. However, I do not see any "harm" in being able to do special things (such as calling simapi function that does not affect the simulation result) while running under sysbld (using #ifdef SBUSER to protect autocode from calling unsupported features).
I can use the USR01.c, however, I will not be able to generate and run the code for the model (which is essential for us).
Considering the above, The question or problem is why the SIMAPI_GetUCBBlockInfo() function requires a pointer to the iinfo structure to bring back pointers to the current block and superblock?
The other soultion could have been to allow the user to create a local ucbhook.c file. Currently this does not work since simexe generates a ucbhook (ucbhook.c) on the fly which is compiled and linked into a shared object (which is then being removed at the end of make process).
Farshid

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