Hi Everybody,
Thanks for the answers to my previous question. 
My question now is about what instruction/command should be used to return to asm from a C
function.  The program in asm works with SPORT0 and SPORT2 interrupts, and the C function is
call using the CALL instruction.

Thanks

You really need to read the manual.

The manual that contains all of the answers to your questions is the
"C/C++ Compiler and Library Manual

--- In a...@yahoogroups.com, aova2@... wrote:
>
> Hi Everybody,
> Thanks for the answers to my previous question. 
> My question now is about what instruction/command should be used to
return to asm from a C function.  The program in asm works with SPORT0
and SPORT2 interrupts, and the C function is call using the CALL
instruction.
> 
> Thanks
>

Hi again

a...@hotmail.com schrieb:
> Hi Everybody,
> Thanks for the answers to my previous question. 
> My question now is about what instruction/command should be used to return to asm from a C
function.  The program in asm works with SPORT0 and SPORT2 interrupts, and the C function is
call using the CALL instruction.
First, you should call the C function correctly.
IIRC there's a macro ccall, which sets up the stack frame and uses the
special processor command cjump (on 21161, but that should be the same
on 2126x).
You cannot change the way, C returns from a function. That's done by the
C compiler.

BTW when writing ASM functions to be called from C, use the macros
leaf_entry and leaf_exit. You should find them in VisualDSP's help
(along with above ccall, and some more asm macros like puts and gets for
using the C stack).

Regards
Norbert

-- 
Dr. Norbert Langermann - Softwareentwickler
RADIODATA Kommunikationstechnik GmbH
n...@radiodata.biz
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