Re: [avr-gcc-list] External interrupt assembler routine - how?

[Anich Gregor]

Hi!

To put interrupts into external assembler files just export the symbol:

#include <avr/signal.h>

    .global SIG_INTERRUPT0
SIG_INTERRUPT0:
    reti

Gregor

On Saturday 12 July 2003 00:50, Thomas Rehm wrote:
> Hi folks,
>
> I want to declare a routine in an external assembler source as an
> interrupt, because I want to get rid off the overhead which avr-gcc
> involves, when an Interrupt is declared via the AVR-GCC Interrupt API.
> Too, I want to reserve some registers for only use by this routine.
>
> Up to now, I found only infos about inline assembler and how to link
> external assembling code - but neither how to get an interrupt pointer to
> my routine nor how to reserve registers without pushed and popped by the
> compiler.
>
> Is there any way?
>
> thanks,
> Tom.
>
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