Subject: Re: Emulation
To: None <firstname.lastname@example.org>
From: Joerg Sonnenberger <email@example.com>
Date: 09/13/2007 14:49:25
On Thu, Sep 13, 2007 at 11:42:28AM +0100, David Brownlee wrote:
> If you want to make sure you code is architecture portable
> as well, then the best additional architecure to pick is
> sparc64 - compared to the 'common' x86, its 64bit vs 32bit,
> big endian bs little endian (while x86_64 and alpha are
> 64bit they are also little endian like x86, allowing stupid
> code which treats a pointer to a 64bit value as a pointer
> to a 32bit value to 'accidently' get the right 32 bits.
> sparc64 is big endian so such code will get the wrong 32
You forgot that it requires strict alignment of all multi-byte reads,
has weaker cache coherency and a number of other goodies.