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assembler rtn called from C

erik malund

I have the impression that an assembler non-interrupt subroutine called from 'C' need save no registers.

Is that correct?

Erik

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    Yes. That's Correct.

    Saving registers in an assembler function (the way that I think you are thinking) is unnecessary and gains nothing.

    Note that you may want to use REGUSE in the assembler module to help the Global Register Coloring optimization (if you use it). But, this is not required.

    Jon

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    Yes. That's Correct.

    Saving registers in an assembler function (the way that I think you are thinking) is unnecessary and gains nothing.

    Note that you may want to use REGUSE in the assembler module to help the Global Register Coloring optimization (if you use it). But, this is not required.

    Jon

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