site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=RNt4Zuyx2lX4did6H8TmBrUt4rnusVjHcesMZPwN2YM=; b=J8wgi8N6U/+S58k0g2KTxNLD15+T6AB+i9lx+goSzQqPekBIO9Tq4GESlp6o5OQGd8 6ElwUO+49fo6I9r2gko3PCAj0YEP7+ZH0M+YE639q54rAN55jCqCeuv0JNBUnScvxE9i JvEjUobIMQxHTSzf5qc5DsfhxA/E6+5gbLlsw= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=MV9NfDZzeae+J5rjVsVnEkXjYC3Hg8s6p6QsXu+bBDnWdls+Ac4/a72+UxuEhfStTJ JZNj2T/vsswYgMKgR0PjLzR3Ite3Ji54T0mYfAQ7KjkbcrAdcCt3PuYpbvDa8LROZ2lc EyICxmWWMI2sjqcdtWdj2MkwFpo2yU++mk6pc= Thanks for this. However, why then are there 4 binary types : x86, x86_64, ppc32 and ppc64 when the kernel itself is a 32-bit. Will it be able to take advantage of the other 32-bits ? On Wed, Aug 19, 2009 at 3:30 PM, Jean-Daniel Dupas<devlists@shadowlab.org> wrote:

Le 19 août 2009 à 11:53, rohan a a écrit :

...

Hi All,      Does Mac OS X 10.5 provide separate 32-bit and 64-bit kernels ?Or there is only one type of kernel supported.

What I mean is that like Windows has separate version x86, x86_64, IA is there something like this for Mac OS X 10.5 as well ?

If not are there only 2 version: Intel i386 and PowerPC ?

and does the same thing run on 32-bit and 64-bit hardware ?

Most (if not all) of the answers are in the 64 bit Transition Guide and in The Universal Binary programming Guide.

http://developer.apple.com/documentation/Darwin/Conceptual/64bitPorting/intr...

http://developer.apple.com/documentation/MacOSX/Conceptual/universal_binary/...

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