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Re: [avr-gcc-list] Allocation sequence of eeprom variables

From: Juergen Harms
Subject: Re: [avr-gcc-list] Allocation sequence of eeprom variables
Date: Mon, 20 Aug 2012 20:32:45 +0200
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On 08/20/2012 07:36 PM, Georg-Johann Lay wrote:
Don't rely on unspecified behavior.  It's a bad design pattern...

Yes, that has been my original problem (which initially I had not realised).

As a quick fix, I will put individual data structures in separate sections / modules and determine their allocation in my Makefile. That allows me to rapidly update my infrastructure.

But I intend to modify that to a concept of indirections, using pointers in low eeprom memory (defined in an inline assembly block arranged according to an externally specified layout) which in turn point to the data - wherever it is placed. This will make my eeprom more independant of version fancies (my own or gcc's). That is some kind of hard-coding, but independantly finding eeprom data - as I need it - practically requires some kind of hard-coding.


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