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Date: Sat, 29 Dec 2007 18:03:15 +0800
From: Erich Dollansky <oceanare@pacific.net.sg>
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To: Kip Macy <kip.macy@gmail.com>
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Cc: freebsd-hackers@freebsd.org, Ivan Voras <ivoras@freebsd.org>
Subject: Re: Architectures with strict alignment?
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Hi,

Kip Macy wrote:
> Isn't it everything except x86?

not really.

All RISC based designs need the alignment so that the CPU can fetch a 
CPU word in one go. CISC based designs do not have this limitiation.

I also do not know of any other CISC based design which made it to 
mainstream.

Erich
> 
> -Kip
> 
> On Dec 29, 2007 12:11 AM, Erich Dollansky <oceanare@pacific.net.sg> wrote:
>> Hi,
>>
>>
>> Ivan Voras wrote:
>>> Hi,
>>>
>>> Which of the architectures FreeBSD supports (if any) have strict memory
>>> alignment requirements? (in the sense that accessing a 32-bit integer
>>> not aligned on a 32-bit address results in a hardware trap/exception).
>>>
>> isn't this the case with SPARC and Itanium?
>>
>> I know, they are 64 bits.
>>
>> Erich
>>
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>