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Re: [avr-gcc-list] Avr-gcc Produces Incorrect Code with -Os

From: Anatoly Sokolov
Subject: Re: [avr-gcc-list] Avr-gcc Produces Incorrect Code with -Os
Date: Thu, 22 May 2008 21:08:30 +0400


> An alternative way to handle this sort of thing would be to implement a 
> "critical" function attribute like in the msp430 port of gcc - a 
> function with this attribute has interrupts disabled at the start, and 
> restored at the end.  

  It will work for for tiny and mega devices, but xmega devices have 
Non-Maskable Interrupts, and clearing of the I-bit does not guarantee 
full continuity execution of a code.

 I shall make a patch for "critical" attribute.


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