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Re: [avr-gcc-list] Reenabling interrupts in epilogue of interrupt functi

From: Larry Barello
Subject: Re: [avr-gcc-list] Reenabling interrupts in epilogue of interrupt function
Date: Fri, 23 Aug 2002 07:18:54 -0700

Use the "signal" attribute.

Best to use the #defines in the file "sig-avr.h"


----- Original Message ----- 
From: "Christian Troedhandl" <address@hidden>
> If the following code is compiled with
> 'avr-gcc -O0 -mmcu=atmega103 -S test.c' (I use version 3.2.0 (20020708)
> ----------------------------------------
> #include <io.h>
> The problem with this is, that the interrupt is not reenabled after
> updating the stack pointer, and so interrupts are blocked for 41
> clock ticks, which is not acceptable for our purposes.
> Is there a possibility to tell the compiler to insert a 'sei'
> instruction after the 'out __SP_H__,r29' instruction, like it is done in
> the prologue of the function?

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