Re: [avr-gcc-list] Two interrupts with same handlers

[Larry Barello]

Easy: write one interrupt handler in assembly and just have it
jump to the real handler. Say your overflow handler is the real
one, then make a new file with the following:.

    .func myfunc
    .global _comparator_

_comparator_:
    rjmp    _overflow0_

    .endfunc

Assemble it (no headers needed) and include it in the list of
stuff to be linked.  NB the *real* handler symbolic names can be
found in "sig-avr.h"

Cheers!

----- Original Message -----
From: "Carsten Beth" <address@hidden>


> Hi there,
>
> I have  written an application with avr-gcc which uses two
interrupt
> sources (analog compare match and timer0 overflow). Both
interrupts have
> the same handler. So I wrote something like this:
...
>
> All is working very fine, but the compiler wastes a lot of
programm
> memory. He generates two interrupt vectors which point to
different
> functions and both functions make a lot of push and pop with a
rcall
> interrupt_handler in between. Actualy both function do the same
thing,
> so the interrupt vectors could point to the same function.
>
> Is there any way to manipulate the code, so no or less memory
is wasted?