Memory alignment on i386

[CamiloAlejo at netscape.net]

"Joel Sherrill <joel at OARcorp.com>" <joel.sherrill at OARcorp.com> wrote:

I think my question was wrong, I want every single varible defined in my app to be 32-bit aligned, but more important is having structure members 32-bit aligned by default. I want my application optimized for speed, and having non 32-bit aligned memory access can be processor consuming.

I tried to find out if '--pack-struct' was enabled, but I found nothing.

>CamiloAlejo at netscape.net wrote:
>> Hello,
>> 
>> I'm using rtems 4.6 with pc486 BSP. As far as I can see, the memory is byte-aligned, but I would like to change it to dword-aligned.
>> 
>> Is there any way to set it?
>
>What memory do you think is memory-aligned?  Heap? Stack? something 
>setup in the linker script?  Different ways to do the different
>memory areas.
>
>--joel
>
>> Thanks, 
>> 
>> Camilo Alejandro Arboleda
>> 
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>-- 
>Joel Sherrill, Ph.D.             Director of Research & Development
>joel at OARcorp.com                 On-Line Applications Research
>Ask me about RTEMS: a free RTOS  Huntsville AL 35805
>    Support Available             (256) 722-9985
>
>

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