TMS320F28377D: How to use MCCNDD to call a DCL function

Making a little progress on this I think... I was getting a bunch of

[E0800] Instructions not permitted in structure/union definitions

errors that I didn't understand but worked through it with help from

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1134199/tms320f280025-rpt-mov-instruction-issue-when-migrate-f2802x-to-f280025

Phew... So the following CLA asm line builds for me now:

MCCNDD      _DCL_runDF23_L1, UNCF

Based on the function header for DCL_runDF23_L1 it seems like I need to put *p in to MAR0 and ek in to MR0 before the MCCNDD instruction

; C prototype: float DCL_runDF23_L1(DCL_DF23 *p, float32_t ek);
; argument 1 = *p : 32-bit structure address [MAR0]
; argument 2 = ek : 32-bit floating-point [MR0]
; return = uk : 32-bit floating-point [MR0]

The second part seems easy. Should be something like

MMOV32      MR0,    @_ek

What I'm not sure about is putting the pointer to p in MAR0. I think I'd use MMOV16 but I don't know what should go in the second operand? Seems like I could make a pointer to p but I'm wondering if there's some special notation where I can pass the address of p directly without making a pointer?

MMOV16      MAR0, ???

Appreciate your patience while we assign this to the right expert.

Thanks,

Sira

Thank you!