How to call an assembly procedure from c++ code - c++

Question

I'd like to call from my c++ code some 3-rd party text outputting procedure which i have an memory offset. Here is the assembly code of the function:
op_float_msg_ proc near ; initIntExtra_+628o
a3 = dword ptr -3Ch
_object = dword ptr -34h
a2 = byte ptr -30h
font = dword ptr -28h
outline_clr= dword ptr -24h
clr = dword ptr -20h
text = dword ptr -1Ch
push ebx
push ecx
push edx
push esi
push edi
push ebp
sub esp, 34h
mov ecx, eax
mov ebx, 65h
xor eax, eax
xor edx, edx
xor edi, edi
xor esi, esi
mov al, ds:_YellowColor
xor ebp, ebp
mov [esp+4Ch+clr], eax
xor eax, eax
mov [esp+4Ch+text], edx
mov al, ds:_colorTable ; Ś˝ÓşŰę
mov [esp+4Ch+font], ebx
mov [esp+4Ch+outline_clr], eax
loc_4592B6: ; op_float_msg_+BEj
mov eax, ecx ; a1
call interpretPopShort_ ; Get value type
mov word ptr [esp+esi+4Ch+a2], ax
mov eax, ecx ; a1
call interpretPopLong_ ; Get value
mov dx, word ptr [esp+esi+4Ch+a2]
mov [esp+ebp+4Ch+a3], eax
cmp dx, 9801h
jnz short loc_4592E9
mov ebx, eax ; a3
xor edx, edx
mov eax, ecx ; result
mov dx, word ptr [esp+esi+4Ch+a2] ; a2
call interpretDecStringRef_
loc_4592E9: ; op_float_msg_+57j
cmp edi, 1
jz short loc_459312
xor eax, eax
mov ax, word ptr [esp+esi+4Ch+a2]
and ah, 0F7h
cmp eax, 0C001h
jz short loc_459334
push edi
mov eax, [ecx]
push eax
push offset asc_50683C ; "script error: %s: invalid arg %d to flo"...
call interpretError_
add esp, 0Ch
jmp short loc_459334
; ---------------------------------------------------------------------------
loc_459312: ; op_float_msg_+6Cj
xor edx, edx
mov dx, word ptr [esp+esi+4Ch+a2] ; a2
mov eax, edx
and ah, 0F7h
cmp eax, 9001h
jnz short loc_459334
mov eax, ecx ; a1
mov ebx, [esp+ebp+4Ch+a3] ; a3
call interpretGetString_
mov [esp+4Ch+text], eax
loc_459334: ; op_float_msg_+7Dj ...
add ebp, 4
inc edi
add esi, 2
cmp edi, 3
jl loc_4592B6
mov edx, [esp+4Ch+_object]
test edx, edx
jnz short loc_459362
mov ebx, 1 ; type
mov edx, offset aFloat_msg ; "float_msg"
mov eax, ecx ; arg
call dbg_error_
jmp loc_459496
; ---------------------------------------------------------------------------
loc_459362: ; op_float_msg_+CAj
mov ebx, [esp+4Ch+text]
mov esi, edx
test ebx, ebx
jz short loc_459371
cmp byte ptr [ebx], 0
jnz short loc_459387
loc_459371: ; op_float_msg_+EAj
mov eax, esi ; result
call text_object_remove_
call tile_refresh_display_
add esp, 34h
pop ebp
pop edi
pop esi
pop edx
pop ecx
pop ebx
retn
Based on the code above how can I call pass the parameters to the function, especially the string to display? I know, that it's maybe a little guessing but can someone please help me try to deduce it?