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TMS320VC5416: TMS320VC5416

RAJKISHORE NAYAK
Prodigy 20 points
Part Number: TMS320VC5416

I have some legacy assembly routines for an application. Now we are doing some changes where there is a requirement to call these assembly routines from c functions. How easily that can be done.

second if some fresh assembly routines has to be written, how that to be integrated with c functions.

  • 0
    TI__Mastermind 46795 points

    Hi Raj,

    I think you will need to define the assembly function _xyz in *.asm file and claim it to be global:

    .global _VECSTART 

    ...

    _xyz:

    /* func body */

    then in C file you will need to claim xyz as the external and use it as a C function:

    extern void xyz(void);

    ...

    xyz();

    Please notice that any registers used in your assembly function have to be saved in the beginning of the function and restored at the end of the function, so that the C execution environment is kept unchanged. 

    Best regards,

    Ming